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  1. <html>
  2. <head><title>Vitamin E: Estrogen antagonist, energy promoter, and anti-inflammatory</title></head>
  3. <body>
  4. <h1>
  5. Vitamin E: Estrogen antagonist, energy promoter, and anti-inflammatory
  6. </h1>
  7. <em><p>
  8. Vitamin E, like progesterone and aspirin, acts within the cellular regulatory systems, to prevent
  9. inflammation and inappropriate excitation. Since uncontrolled excitation causes destructive oxidations,
  10. these substances prevent those forms of oxidation.
  11. </p>
  12. <p>
  13. Molecules that can easily be oxidized and reduced can function as antioxidants, and vitamin E does
  14. function as that kind of antioxidant in many chemical environments. But it is highly misleading to
  15. consider that as the explanation for its many beneficial biological effects. That kind of reasoning
  16. contributed to the use of the antioxidant carcinogens BHT and BHA as food additives and "antiaging"
  17. supplements, and many other chemicals are being promoted on the basis of their abstract antioxidant
  18. function.
  19. </p>
  20. <p>
  21. Becoming aware of the real value of vitamin E will have far reaching implications in nutrition and
  22. medicine.
  23. </p>
  24. <p>
  25. In determining criminal or civil legal responsibility, the concept "should have known" is recognized and
  26. used. In science, which is all about knowing, there is certainly a responsibility to be informed when
  27. the subject involves the life and health of millions of people. The science establishment of government
  28. and industry should be held responsible for the information it hides, destroys, or ignores for its own
  29. benefit. The US government has an agency for prosecuting research fraud, but the concept is applied so
  30. narrowly as to be meaningless, when deception has become the rule. And since it controls the court
  31. system, govenment agencies and their functionaries won't be prosecuted, even when their crimes become
  32. well known.
  33. </p>
  34. <p>
  35. "Vitamin E was advocated as an effective treatment for heart disease by Dr. Ev<em>an Shute of London,
  36. Ontario more than 50 years ago.</em>
  37. <em> </em>
  38. <em>His pioneering claims, which were unacceptable to the medical community at large, have been
  39. confirmed by recent findings from epidemiologic studies and clinical trials.</em>
  40. <em>" </em>
  41. </p></em>
  42. <hr />
  43. <p>
  44. Political scientists have recognized the process in which big corporations "capture" the governmental
  45. agencies that were created to regulate them. The editorial boards of professional journals can be captured
  46. even more cheaply than the agencies of government, and their influence can be even more valuable to
  47. industry.
  48. </p>
  49. <p>
  50. If science impinges upon the plans of an industry, it can be managed into compliance, when the industry
  51. controls the journals and the agencies that fund research.
  52. </p>
  53. <p>
  54. In the 1940s, it had already become clear to the estrogen industry that vitamin E research was impinging on
  55. its vital interests.
  56. </p>
  57. <p>
  58. The Manhattan Project, that created the atomic bomb, also created a generation of scientific and
  59. bureaucratic zealots who ignored public health and safety to advance their projects and their careers, and
  60. changed the way science was done. At exactly the same time, the pharmaceutical industry was using its
  61. financial and political power to change the way medicine was practiced and taught, and the consequences for
  62. world health rivalled those of the nuclear industry.
  63. </p>
  64. <p>
  65. In 1933 the physician R.J. Shute was aware of the problems associated with toxemia of pregnancy or
  66. preeclampsia. Especially among poorly nourished women, many pregnancies were complicated by circulatory
  67. problems, including cyclic bleeding, thrombosis, stroke, and hypertension, and these difficult pregnancies
  68. often ended in miscarriage or premature delivery, resulting in many serious health problems among the babies
  69. that survived.
  70. </p>
  71. <p>
  72. At that time, both estrogen and vitamin E were being widely studied, though the exact structure of the
  73. tocopherol molecule wasn't defined until 1936-37. Vitamin E had been found to improve fertility of both male
  74. and female animals, and to prevent intrauterine death of the embryo or fetus, so it was called the
  75. "antisterility vitamin." Using it to prevent women from having miscarriages must have occurred to many
  76. people.
  77. </p>
  78. <p>
  79. Animal research in the 1930s was also showing that estrogen had many toxic effects, including causing
  80. infertility or intrauterine death, connective tissue abnormalities, and excessive blood clotting. Dr. Shute
  81. and his sons, Wilfred and Evan, were among those who considered vitamin E to be an antiestrogen. They found
  82. that it was very effective in preventing the clotting diseases of pregnancy.
  83. </p>
  84. <p>
  85. Other researchers, who knew that progesterone protected against the toxic effects of estrogen, described
  86. vitamin E as the "progesterone-sparing agent," since so many of its antiestrogenic effects resembled those
  87. of progesterone.
  88. </p>
  89. <p>
  90. The Shute brothers began using vitamin E to treat circulatory diseases in general, rather than just in
  91. pregnant women--blood clots, phlebitis, hypertension, heart disease, and diabetes all responded well to
  92. treatment with large doses.
  93. </p>
  94. <p>
  95. Vitamin E, as its name indicates, was the fifth type of "vitamin" factor to be identified, and it received
  96. its name in 1922, even though its chemical structure hadn't been identified. The public quickly understood
  97. and accepted that certain substances in food were essential for life and health, so by 1940 practically all
  98. physicians were recommending the use of nutritional supplements.
  99. </p>
  100. <p>
  101. If vitamin E was essential for human health, and achieved at least some of its amazing effects by opposing
  102. estrogen, then the synthetic estrogen industry had a problem.
  103. </p>
  104. <p>
  105. Edward L. Bernays had already been in business for decades, teaching corporations and governments how to
  106. "engineer consent." After his work for the government to engineer support for entering the first world war,
  107. Bernays' next big job was for the tobacco industry. To convince women to smoke cigarettes, to achieve
  108. equality with men, he organized an Easter parade, Torches of Freedom, in which thousands of women marched
  109. smoking their freedom torches. In association with the American Medical Association (the editor of JAMA
  110. actually helped the tobacco industry design its campaigns), Bernays ran a campaign to convince Americans
  111. that smoking was good for the health.
  112. </p>
  113. <p>
  114. The drug industry began using his techniques in sometimes crude but always effective ways. Estrogen was
  115. named "the female hormone;" natural hormones, including estrogen and progesterone, were claimed, without any
  116. research, to be inactive when taken orally. Physician-shills were created to claim wonderful effects for
  117. estrogen. The vitamin status of the tocopherols was denied; as recently as the 1970s (and maybe later),
  118. university professors of dietetics were flatly saying "no one needs vitamin E."
  119. </p>
  120. <p>
  121. Very little research showing the curative effects of vitamin E in human diseases was allowed to be
  122. published, so it was only occasionally necessary to openly denounce vitamin E as worthless or dangerous. In
  123. 1981, the journal of the AMA published an article reviewing the "toxic" effects of vitamin E. Since I had
  124. read all of the articles cited, I realized that the author was claiming that whenever vitamin E changed
  125. something, the change was harmful, even though the original publication had described the effect as
  126. beneficial.
  127. </p>
  128. <p>
  129. Although JAMA was eventually forced to give up its revenue from cigarette advertising, it didn't suffer at
  130. all, because of the vast advertising campaigns of the estrogen industry. JAMA obviously wouldn't want to
  131. publish anything suggesting that vitamin E, or progesterone, or thyroid, might be beneficial because of its
  132. antagonism of the harmful effects of estrogen.
  133. </p>
  134. <p>
  135. Estrogen causes changes in the uterus that prevent implantation of the embryo, and that impair support for
  136. its development if it has already implanted. It decreases the availability of oxygen to the embryo, while
  137. vitamin E increases it.
  138. </p>
  139. <p>
  140. My dissertation adviser, A.L. Soderwall, did a series of experiments in which he showed that providing
  141. hamsters with extra vitamin E postponed the onset of infertility in middle age. In my experiments, vitamin E
  142. increased the amount of oxygen in the uterus, correcting an oxygen deficiency produced either by
  143. supplemental estrogen or by old age. Progesterone has similar effects on the delivery of oxygen to the
  144. uterus.
  145. </p>
  146. <p>
  147. In the 1940s, the official definition of vitamin E's activity was changed. Instead of its effectiveness in
  148. preventing the death and resorption of embryos, or the degeneration of the testicles or brain or muscles, it
  149. was redefined as an antioxidant, preventing the oxidation of unsaturated oils.
  150. </p>
  151. <p>
  152. Although some people continued to think of it as a protective factor against thrombosis, heart attacks,
  153. diabetes, and infertility, the medical establishment claimed that the prevention or cure of diseases in
  154. animals wasn't relevant to humans, and that a mere antioxidant couldn't prevent or cure any human disease.
  155. </p>
  156. <p>
  157. The experiments that led to the identification of vitamin E involved feeding rats a diet containing rancid
  158. lard and, as a vitamin A supplement, cod liver oil. Both of these contained large amounts of polyunsaturated
  159. oils.
  160. </p>
  161. <p>
  162. From 1929 to the early 1930s, other researchers were claiming to have demonstrated that the polyunsaturated
  163. fatty acids were nutritionally essential. These experiments, like the vitamin E experiments, were done on
  164. rats, but the medical establishment was satisfied that rat experiments proved that humans need linoleic or
  165. linolenic acid, while they refused to accept that vitamin E was essential for humans. When, in the 1940s, a
  166. group of vitamin B6 researchers showed that the supposed "essential fatty acid deficiency" could be cured by
  167. a supplement of vitamin B6, it became apparent that the polyunsaturated fatty acids slowed metabolism, and
  168. reduced all nutritional needs. The thyroid hormone was powerfully suppressed by the "essential" fatty acids.
  169. </p>
  170. <p>
  171. When we consider the two sets of experiments together, their outstanding feature is the toxicity of the
  172. polyunsaturated oils, which in one kind of experiment suppressed metabolism, and in the other kind of
  173. experiment created a variety of degenerative conditions.
  174. </p>
  175. <p>
  176. By the late 1940s and early 1950s, estrogens of various sorts had been synthesized from hydrocarbons, and
  177. were being recommended to prevent miscarriages, because "estrogen is the female hormone." The meat industry
  178. had found that the polyunsaturated oils were valuable in animal feed, since they suppressed metabolism and
  179. made it cheaper to fatten the animals, and these antithyroid oils were next marketed as "heart protective"
  180. human foods, though by suppressing the thyroid and destroying vitamin E, they actually contributed to both
  181. heart disease and cancer. (Giving estrogen to livestock to improve their feed efficiency, and to people "to
  182. prevent heart attacks," was an interesting parallel to the oil promotional campaigns.)
  183. </p>
  184. <p>
  185. The influence of the food oil industry kept researchers away from the idea that these oils were not safe for
  186. food use, and instead tended to support the idea that vitamin E is just an antioxidant, and that the seed
  187. oils were the best way to get vitamin E in the diet.
  188. </p>
  189. <p>
  190. The antifertility effects of the polyunsaturated oils, demonstrated in the vitamin E experiments, weren't at
  191. the time understood to have anything to do with estrogen's antifertility effects. But to understand vitamin
  192. E, I think we have to consider the close interactions between estrogen and the polyunsatured fatty acids
  193. (PUFA). Their actions are closely intertwined, and are antagonized by a variety of energizing and
  194. stabiliizing substances, including saturated fats, progesterone, thyroid, vitamin E, and aspirin.
  195. </p>
  196. <p>
  197. Generally, chemicals that inhibit enzymes are toxic, producing some sort of symptom or deterioration. But a
  198. group of enzymes related to estrogen and PUFA are inhibited by these protective substances. Although under
  199. our present diet, these enzymes metabolize the PUFA, in the fetus and newborn they act on our endogenous
  200. fats, the series related to the Mead acids. The Mead acid is antiinflammatory, and broadly protective. The
  201. dietary PUFA interfere with these natural protective substances,
  202. </p>
  203. <p>
  204. The enzymes that, if we didn"t eat PUFA, would be regulating the Mead series, being activated in response to
  205. stress, would be producing antistress substances, which would limit the stress reaction. But as we become
  206. increasingly saturated with the anti-vitamin E fats, these enzymes, instead of stopping inflammation,
  207. promote it and cause tissue injury. The remaining stress limiting factors, such as progesterone, by
  208. correcting the distortions caused by stress, tend to eliminate the conditions which activated the
  209. enzymes--in a very indirect form of inhibition.
  210. </p>
  211. <p>
  212. Many of the events involved in inflammation are increased by estrogen, and decreased by vitamin E. Estrogen
  213. causes capillaries to become leaky; vitamin E does the opposite. Estrogen increases platelet aggregation,
  214. and decreases a factor that inhibits platelet aggregation; vitamin E does the opposite.
  215. </p>
  216. <p>
  217. Excess clotting is known to be caused by too much estrogen, and also by a vitamin E deficiency.
  218. </p>
  219. <p>
  220. Clotting leads to fibrosis, and there is clear evidence that vitamin E prevents and cures fibrotic diseases,
  221. but this still isn't generally accepted by the powerful medical institutions. Estrogen and polyunsaturated
  222. fats increase fibrosis.
  223. </p>
  224. <p>
  225. Estrogen increases progstaglandin synthesis, vitamin E decreases their synthesis; estrogen increases the
  226. activity of the enzymes COX and LOX, vitamin E decreases their activitiy. (Jiang, et al., 2000; Ali, et al.,
  227. 1980; Parkhomets, et al., 2001.) Estrogen releases enzymes from lysosomes, vitamin E inhibits their release.
  228. Beta-glucuronidase, one of these enzymes, can release estrogen at the site of an inflammation.
  229. </p>
  230. <p>
  231. Estrogen often increases intracellular calcium and protein kinase C, vitamin E has generally opposite
  232. effects.
  233. </p>
  234. <p>
  235. The polyunsaturated fatty acids and their derivatives, the prostaglandins, act as effectors, or amplifiers,
  236. of estrogen's actions.
  237. </p>
  238. <p>
  239. If vitamin E is acting as a protectant against the polyunsaturated fatty acids, that in itself would account
  240. for at least some of its antiestrogenic effects.
  241. </p>
  242. <p>
  243. Besides antagonizing some of the end effects of the toxic fatty acids, vitamin E inhibits lipolysis,
  244. lowering the concentration of free fatty acids (the opposite of estrogen"s effect), and it also binds to,
  245. and inactivates, free fatty acids. The long saturated carbon chain is very important for its full
  246. functioning, and this saturated chain might allow it to serve as a substitute for the omega -9 fats, from
  247. which the Mead acid is formed. The unsaturated tocotrienols have hardly been tested for the spectrum of true
  248. vitamin E activity, and animal studies have suggested that it may be toxic, since it caused liver
  249. enlargement.
  250. </p>
  251. <p>
  252. One possibly crucial protective effect of vitamin E against the polyunsaturated fatty acids that hasn't been
  253. explored is the direct destruction of linolenic and linoleic acid. It is known that <strong>bacterial
  254. vitamin E is involved in the saturation of unsaturated fatty acids, and it is also known that intestinal
  255. bacteria turn linoleic and linolenic acids into the fully saturated stearic acid.</strong>
  256. </p>
  257. <p>
  258. <strong>"No metabolic function is known for alpha-tocopherolquinol or its quinone other than as a cofactor
  259. in the biohydrogenation of unsaturated fatty acids that can be carried out by only a few
  260. organisms."</strong>
  261. </p>
  262. <p>
  263. <strong>
  264. <em>P.E. Hughes and S.B. Tove, 1982.</em></strong>
  265. </p>
  266. <p>
  267. <strong><em>"Linoleic acid was significantly decreased (P &lt; 0.001) and there was a significant rise (P
  268. &lt; 0.05) in its hydrogenation product, stearic acid. Linolenic acid was also significantly
  269. decreased. . . ." "The study provides evidence that bacteria from the human colon can hydrogenate
  270. C18 essential polyunsaturated fatty acids."</em></strong>
  271. </p>
  272. <p>
  273. <em>
  274. F.A. Howard &amp; C.
  275. </em>
  276. <em>Henderson, 1999</em>
  277. </p>
  278. <p>
  279. Because of the way in which the decision to call vitamin E a simple antioxidant was conditioned by the
  280. historical setting, there has been a reluctance, until recently, to give much weight to the pathogenicity of
  281. lipid peroxidation and free radicals, partly because lipid peroxidation is only a minor part of the toxicity
  282. of the polyunsaturated oils, and there was little support for the investigation of the real nature of their
  283. toxicity. This environment has even distorted the actual antioxidant value of the various forms of vitamin
  284. E. (For example, see Chen, et al., 2002.)
  285. </p>
  286. <p>
  287. The people who say that vitamin E is nothing but an antioxidant sometimes take other antioxidants, with, or
  288. instead of, vitamin E. BHT, BHA, and many natural compounds (derived from industrial and agricultural
  289. wastes) are often said to be "better than vitamin E" as antioxidants. Anything that can be oxidized and
  290. reduced (melatonin, estrogen, tryptophan, carotene, etc.) will function as an antioxidant in some system,
  291. but in other circumstances, it can be a pro-oxidant.
  292. </p>
  293. <p>
  294. The people who think there is benefit in the abstract "antioxidant" function seem to be thinking in terms of
  295. something that will, like a ubiquitous fire department, put out every little fire as soon as it starts. I
  296. think it's more appropriate to think of the biological antioxidant systems as programs for controlling the
  297. arsonists before they can set the fires.
  298. </p>
  299. <p>
  300. Since the requirement for vitamin E decreases as the consumption of unsaturated fats decreases, the
  301. requirement, if any, would be very small if we didn't eat significant quantities of those fats.
  302. </p>
  303. <p>
  304. In the years since the tocopherols were identified as vitamin E, the material sold for research and for use
  305. as a nutritional supplement has changed drastically several times, even when it has been given a specific
  306. chemical identity, such as mixed tocopherols or d-alpha tocopherol. Variations in viscosity and color,
  307. caused by changes in the impurities, have undoubtedly influenced its biological effects, but the ideology
  308. about its antioxidant value has kept researchers from finding out what a particular batch of it really is
  309. and what it really does.
  310. </p>
  311. <p>
  312. <strong>"We compared the effect of a mixed tocopherol preparation with that of alpha-tocopherol alone on
  313. superoxide dismutase (SOD) activity and iNOS expression in cultured myocytes exposed to
  314. </strong>
  315. <strong>H-R." "Both tocopherol preparations attenuated cell injury. . . ." "However, mixed-tocopherol
  316. preparation was much superior to alpha-tocopherol in terms of myocyte protection. . . ." "Lack of
  317. efficacy of commercial tocopherol preparations in clinical trials may reflect absence of gamma- and
  318. delta-tocopherols."</strong>
  319. </p>
  320. <p>
  321. <strong>Chen<em>
  322. H, Li D, Saldeen T, Romeo F, Mehta JL,Biochem Biophys Res Commun 2002 "Mixed tocopherol preparation
  323. is superior to alpha-tocopherol alone against hypoxia-reoxygenation injury."</em></strong>
  324. </p>
  325. <p>
  326. Keeping our diet as free as possible of the polyunsaturated fats, to create something like the "deficiency"
  327. state that is so protective (against cancer, trauma, poison, shock, inflammation, infection, etc.) in the
  328. animal experiments, seems preferable to trying to saturate ourselves with antioxidants, considering the
  329. imperfectly defined nature of the vitamin E products, and the known toxicity of many of the other
  330. antioxidants on the market.
  331. </p>
  332. <p>
  333. The carcinogenic properties of the polyunsaturated fats have been known for more than 50 years, as has the
  334. principle of extending the life span by restricted feeding. More recently several studies have demonstrated
  335. that the long lived species contain fewer highly unsaturated fats than the short lived species. <strong
  336. >Restriction of calories prevents the lipids in the brain, heart, and liver from becoming more unsaturated
  337. with aging.</strong>
  338. (Lee, et al., 1999; Laganiere, et al., 1993; Tacconi, et al., 1991; R. Patzelt-Wenczler, 1981.)
  339. </p>
  340. <p>
  341. When cells are grown in tissue culture without the "essential fatty acids," they become "deficient," and in
  342. that state are very resistant to chemical injury, and can be grown indefinitely. Besides being a simple
  343. demonstration of the way in which the polyunsaturated fats sensitize cells to injury (Wey, et al., 1993),
  344. these experiments must be an embarrassment to the people who base their argument for the oils" essentiality
  345. on a supposed requirement for "making cell membranes." Since the cells can multiply nicely in their
  346. deficient state, we have to conclude that the oils aren"t needed for "membranes," or maybe that cells resist
  347. injury better "without membranes."
  348. </p>
  349. <p>
  350. In the opposite direction, an excess of insulin or prolactin, or a deficiency of vitamin E, increases the
  351. activity of the enzymes that convert linoleic acid into the more highly unsaturated fatty acids. Excess
  352. insulin and prolactin are crucially involved in many degenerative diseases.
  353. </p>
  354. <p>
  355. The highly unsaturated fats suppress respiration in many ways, and these trends toward increased
  356. unsaturation with aging, endocrine stress, and vitamin E deficiency parallel the life-long trend toward
  357. lower energy production from respiration. Many studies show that vitamin E can protect and improve
  358. mitochondrial energy production. (Kikuchi, et al., 1991; Donchenko, et al., 1990, 1983; Guarnieri, et al.,
  359. 1981, 1982.) But the state of so-called essential fatty acid deficiency not only makes mitochondria very
  360. resistant to injury, it greatly intensifies their energy production. Vitamin E supplementation is seldom as
  361. effective as the absence of the toxic oils.
  362. </p>
  363. <p>
  364. Many nutrition charts no longer list liver as a good source of vitamin E, but a large portion of an animal"s
  365. vitamin E is in its liver. This bias in the dietetic literature can be traced to various sources, but a
  366. major influence was the campaign in the 1970s by the drug companies that had patented new forms of synthetic
  367. "vitamin A." They had physicians and professors fabricate stories about the great toxicity of natural
  368. vitamin A, and placed the stories in national magazines, to clear the field for their supposedly non-toxic
  369. products, which have turned out to be disastrously toxic. The result is that many people have fearfully
  370. stopped eating liver, because of its vitamin A. The other vitamins in liver, including vitamin K, function
  371. very closely with vitamin E, and the stably stored forms of vitamin E are likely to be a good approximation
  372. for our needs.
  373. </p>
  374. <p>
  375. There is still a strong division between what people can say in their professional publications, and what
  376. they believe. A man who was influential in designating vitamin E as an antioxidant, M.K. Horwitt, complained
  377. when the government raised its recommended vitamin E intake by 50%, because it wasn"t supported by new data,
  378. and because millions of people get only ten milligrams per day and "are healthy." But he has been taking 200
  379. mg daily (plus aspirin) for many years. He apparently doesn't have very much confidence in the ideas he
  380. advocates publicly.
  381. </p>
  382. <p><h3>REFERENCES</h3></p>
  383. <p>
  384. Prostaglandins Med 1980 Feb;4(2):79-85. <strong>Inhibition of human platelet cyclooxygenase by
  385. alpha-tocopherol.</strong> Ali M, Gudbranson CG, McDonald JW. Alpha-tocopherol, an inhibitor of platelet
  386. aggregation, was evaluated for its<strong>
  387. effects on the synthesis of thromboxane and prostaglandins. A dose-dependent reduction in thromboxane B2
  388. and prostaglandin D2 synthesis was observed with</strong>
  389. approximately 60% inhibition at 5.0 IU or alpha-tocopherol. Alpha-tocopherol produced a time-dependent,
  390. irreversible inhibition.
  391. </p>
  392. <p>
  393. Int J Vitam Nutr Res 2001 Jan;71(1):18-24. <strong>Vitamin E and the prevention of atherosclerosis.</strong>
  394. Bron D, Asmis R. "Recent new findings have shed new light<strong>
  395. on the physiological role of vitamin E and suggest that it has a much broader array of biological
  396. activities than originally expected. In addition to its well described role as an antioxidant, it is
  397. becoming evident that vitamin E also can modulate the immune system, suppress local and chronic
  398. inflammation, reduce blood coagulation and thrombus formation, and enhance cell function and
  399. survival."</strong>
  400. </p>
  401. <p>
  402. Plast Reconstr Surg 1981 Nov;68(5):696-9. <strong>The effectiveness of alpha-tocopherol (vitamin E) in
  403. reducing the incidence of spherical contracture around breast implants.</strong> Baker JL Jr. Vitamin E
  404. appears to be a safe, simple, and inexpensive means of reducing the number of postoperative capsular
  405. contractures following breast augmentation. The synthetic form of vitamin E (alpha-tocopherol) is
  406. recommended to avoid nausea or skin eruptions in patients with oily skin, which are frequently encountered
  407. when the natural form is taken. No harmful side effects have been noted in any of the patients to date.
  408. Vitamin E has no effect on coagulation systems and does not cause excessive bleeding either during or after
  409. surgery. The recommended dosage of synthetic vitamin E is 1000 IU, b.i.d., for 2 years beginning 1 week
  410. before surgery. If no contracture exists at that time, the dosage may be reduced to 1000 IU daily
  411. thereafter.
  412. </p>
  413. <p>
  414. Carcinogenesis 1999 Jun;20(6):1019-24. <strong>Decrease in linoleic acid metabolites as a potential
  415. mechanism in cancer risk reduction by conjugated linoleic acid.</strong> Banni S, Angioni E, Casu V,
  416. Melis MP, Carta G, Corongiu FP, Thompson H, Ip C.
  417. </p>
  418. <p>
  419. Mech Ageing Dev 1978 Nov;8(5):311-28. <strong>Anomalous vitamin E effects in mitochondrial oxidative
  420. metabolism.</strong> Baumgartner WA, Hill VA, Wright ET. Three different vitamin E effects, suggestive
  421. of specific antioxidant effects, were discovered in the protective action of vitamin E against respiratory
  422. decline (a decrease in mitochondrial respiration attributed to a "leakage" of electron transport radicals).
  423. <strong>
  424. No correlation was found between respiraotry decline and random lipid peroxidation.</strong> The
  425. mechanisms behind two of the three atypical vitamin E effects were defined. Both involve an artifact in the
  426. TBA assay for lipid peroxidation. This artifact occurs when TBA assays are carried<strong>
  427. out in the presence of sucrose and acetaldehyde; the latter is produced from ethanol, the solvent used
  428. to add vitamin E to preparations. The artifact in the TBA assay for peroxidations appears also to be
  429. responsible for differing interpretations of the hepatotoxic effect of ethanol.</strong>
  430. </p>
  431. <p>
  432. Eur J Biochem 1990 Mar 10;188(2):327-32. <strong>Polychlorinated biphenyls increase fatty acid desaturation
  433. in the proliferating endoplasmic reticulum of pigeon and rat livers.</strong> Borlakoglu JT,
  434. Edwards-Webb JD, Dils RR.
  435. </p>
  436. <p>
  437. Nutr Cancer 2000;38(1):87-97. <strong>Effects of topical and oral vitamin E on pigmentation and skin cancer
  438. induced by ultraviolet irradiation in Skh:2 hairless mice.</strong> Burke KE, Clive J, Combs GF Jr,
  439. Commisso J, Keen CL, Nakamura RM. <strong>"Results showed that the skin concentrations of Eol, as well as
  440. levels in the adipose tissue, were increased after topical application. Mice treated with each form of
  441. vitamin E showed no signs of toxicity and had significantly less acute and chronic skin damage induced
  442. by UV irradiation, as indicated by reduced inflammation and pigmentation and by later onset and lesser
  443. incidence of skin cancer."</strong>
  444. </p>
  445. <p>
  446. Am J Physiol 1991 Jun;260(6 Pt 2):R1235-40. <strong>Acute phase response in exercise. II. Associations
  447. between vitamin E, cytokines, and muscle proteolysis.</strong> Cannon JG, Meydani SN, Fielding RA,
  448. Fiatarone MA, Meydani M, Farhangmehr M, Orencole SF, Blumberg JB, Evans WJ.
  449. </p>
  450. <p>
  451. Vrach Delo 1990 Dec;(12):6-8. <strong>[The effect of tocopherol and nicotinic acid on the microcirculation
  452. and blood coagulability in patients with ischemic heart disease]</strong> Chernomorets NN, Kotlubei GV,
  453. Vatutin NT, Zhivotovskaia IA, Gnilitskaia VB, Alifanova RE, Lobach EIa, Mal'tseva NV, Mitrofanov AN.
  454. "Complex treatment using tocopherol acetate produced a positive effect on the coagulation properties of the
  455. blood and did essentially influence the fibrinolytic activity and microcirculation. Tocopherol plus
  456. nicotinic acid resulted in normalization of the blood coagulation process,<strong>
  457. favoured activation of fibrinolysis and improvement of the microcirculatory bed."</strong>
  458. </p>
  459. <p>
  460. Free Radic Biol Med 1991;10(5):325-38. <strong>Oxidative status and oral contraceptive. Its relevance to
  461. platelet abnormalities and cardiovascular risk.</strong> Ciavatti M, Renaud S. INSERM Unit 63, Bron,
  462. France. <strong>"Oral contraceptive (OC) use is a risk for thrombogenic events."</strong> "From these data
  463. we conclude that: <strong>
  464. 1. OC use modifies slightly but significantly the oxidative status in women and in animals by decreasing
  465. in plasma and blood cells the antioxidant defenses</strong> (vitamins and enzymes). 2. The changes in
  466. the oxidative status are related to an increase in plasma lipid peroxides apparently responsible for the
  467. hyperaggregability and possibly the imbalance in clotting factors associated with the OC-induced
  468. prethrombotic state. <strong>
  469. 3. These effects of OC appear to be increased by a high intake of polyunsaturated fat and counteracted
  470. by supplements of vitamin E.</strong> 4. The risk factors acting synergistically with OC, have all been
  471. shown to increase platelet reactivity."
  472. </p>
  473. <p>
  474. Bol Med Hosp Infant Mex 1980 May-Jun;37(3):457-67. <strong>[Jaundice caused by microangiopathic hemolysis
  475. associated to septicemia in the newborn]</strong>
  476. Covarrubias Espinoza G, Lepe Zuniga JL. "These infants with over 3% fragmented cells<strong>
  477. were found to have a significant association with: sepsis, jaundice, crenated RBC's, low levels of
  478. hemoglobin, increased reticulocyte count, and low vitamin E levels."</strong>
  479. </p>
  480. <p>
  481. Endocrinology 1992 Nov;131(5):2482-4. <strong>Vitamin E protects hypothalamic beta-endorphin neurons from
  482. estradiol neurotoxicity.</strong> Desjardins GC, Beaudet A, Schipper HM, Brawer JR.<strong>
  483. "Estradiol valerate (EV) treatment has been shown to result in the destruction of 60% of beta-endorphin
  484. neurons in the hypothalamic arcuate nucleus. Evidence suggests that the mechanism of EV-induced
  485. neurotoxicity involves the conversion of estradiol to catechol estrogen and subsequent oxidation to free
  486. radicals in local peroxidase-positive astrocytes.</strong> In this study, we examined whether treatment
  487. with the antioxidant, vitamin E, protects beta-endorphin neurons from the neurotoxic action of estradiol.
  488. <strong>Our results demonstrate that chronic vitamin E treatment prevents the decrement in hypothalamic
  489. beta-endorphin concentrations resulting from arcuate beta-endorphin cell loss, suggesting that the
  490. latter is mediated by free radicals.</strong>
  491. <strong>Vitamin E treatment also prevented the onset of persistent vaginal cornification and polycystic
  492. ovarian condition which have been shown to result from the EV-induced hypothalamic pathology."</strong>
  493. </p>
  494. <p>
  495. Free Radic Biol Med 2000 Dec 15;29(12):1302-6. <strong>Hyperinsulinemia: the missing link among oxidative
  496. stress and age-related diseases?</strong>
  497. Facchini FS, Hua NW, Reaven GM, Stoohs RA. <strong>"Other proaging effects of insulin involve the inhibition
  498. of proteasome and the stimulation of polyunsaturated fatty acid (PUFA) synthesis and of nitric oxide
  499. (NO). The hypothesis that hyperinsulinemia accelerates aging also offers a</strong>
  500. <strong>metabolic explanation for the life-prolonging effect of calorie restriction</strong> and of
  501. mutations decreasing the overall activity of insulin-like receptors in the nematode Caenorhabditis elegans."
  502. </p>
  503. <p>
  504. J Bacteriol 1982 Sep;151(3):1397-402. <strong>Occurrence of alpha-tocopherolquinone and
  505. alpha-tocopherolquinol in microorganisms.</strong>
  506. Hughes PE, Tove SB. "Both alpha-tocopherolquinol and alpha-tocopherolquinone were found in 56 of 93 strains
  507. of microorganisms examined." "Those microorganisms that did not contain alpha-tocopherolquinol or
  508. alpha-tocopherolquinone tended to fall into two groups. One group consisted of gram-positive, anaerobic or
  509. facultative bacteria with a low content of guanine and cytosine, and the second group encompassed all of the
  510. filamentous microorganisms studied<strong>." "No metabolic function is known for alpha-tocopherolquinol or
  511. its quinone other than as a cofactor in the biohydrogenation of unsaturated fatty acids that can be
  512. carried out by only a few organisms."</strong>
  513. </p>
  514. <p>
  515. J Biol Chem 1980 Dec 25;255(24):11802-6. <strong>Identification of deoxy-alpha-tocopherolquinol as another
  516. endogenous electron donor for biohydrogenation.</strong> Hughes PE, Tove SB.
  517. </p>
  518. <p>
  519. J Biol Chem 1980 May 25;255(10):4447-52. <strong>Identification of an endogenous electron donor for
  520. biohydrogenation as alpha-tocopherolquinol.</strong> Hughes PE, Tove SB. "The ratio of
  521. alpha-tocopherolquinone produced to fatty acid reduced was 2:1 when the tocopherol derivatives were
  522. extracted aerobically. When the extraction was carried out anaerobically, the ratio was 1. It is suggested
  523. that the oxidation of 2 molecules of alpha-tocopherolquinol, each to the semiquinone, provides the electrons
  524. required for the reduction of the cis-bond of the conjugated dienoic fatty acid."
  525. </p>
  526. <p>
  527. Lett Appl Microbiol 1999 Sep;29(3):193-6. <strong>Hydrogenation of polyunsaturated fatty acids by human
  528. colonic bacteria.</strong> Howard FA, Henderson C. Emulsions of the fatty acids linoleic (C18:2 n-6),
  529. alpha-linolenic (C18:3 n-3) and arachidonic acid (C20:4 n-6) were incubated for 4 h under anaerobic
  530. conditions with human faecal suspensions. <strong>Linoleic acid was significantly decreased (P &lt; 0.001)
  531. and there was a significant rise (P &lt; 0.05) in its hydrogenation product, stearic acid. Linolenic
  532. acid was also significantly decreased (P &lt; 0.01), and significant increases in C18:3 cis-trans
  533. isomers (P &lt; 0.01) and linoleic acid (P &lt; 0.05) were seen. With each acid, there were
  534. non-significant increases in acids considered to be intermediates in biohydrogenation. The study
  535. provides evidence that bacteria from the human colon can hydrogenate C18 essential polyunsaturated fatty
  536. acids.</strong>
  537. However, with arachidonic acid there was no evidence of hydrogenation.
  538. </p>
  539. <p>
  540. Prostaglandins Leukot Essent Fatty Acids 1998 Dec;59(6):395-400. <strong>Modulation of rat liver lipid
  541. metabolism by prolactin.</strong> Igal RA, de Gomez Dumm IN, Goya RG.
  542. </p>
  543. <p>
  544. Clin Chim Acta 1994 Mar;225(2):97-103. <strong>Vitamin E and the hypercoagulability of neonatal
  545. blood.</strong> Jain SK, McCoy B, Wise R. <strong><hr /></strong>"
  546. </p>
  547. <p>
  548. Proc Natl Acad Sci U S A 2000 Oct 10;97(21):11494-9. <strong>gamma-tocopherol and its major metabolite, in
  549. contrast to alpha-tocopherol, inhibit cyclooxygenase activity in macrophages and epithelial
  550. cells.</strong> Jiang Q, Elson-Schwab I, Courtemanche C, Ames BN<strong>. "Cyclooxygenase-2
  551. (COX-2)-catalyzed synthesis of prostaglandin E(2) (PGE(2)) plays a key role in inflammation and its
  552. associated diseases, such as cancer and vascular heart disease. Here we report that gamma-tocopherol
  553. (gammaT) reduced PGE(2) synthesis in both lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages and
  554. IL-1beta-treated A549 human epithelial cells with an apparent IC(50) of 7.5 and 4 microM, respectively."
  555. "The inhibitory effects of gammaT and gamma-CEHC stemmed from their inhibition of COX-2 activity, rather
  556. than affecting protein expression or substrate availability, and appeared to be independent of
  557. antioxidant activity."</strong>
  558. "The inhibitory potency of gammaT and gamma-CEHC was diminished by an increase in AA concentration,
  559. suggesting that they might compete with AA at the active site of COX-2. We also observed a moderate
  560. reduction of nitrite accumulation and suppression of inducible nitric oxide synthase expression by gammaT in
  561. lipopolysaccharide-treated macrophages. These findings indicate that gammaT and its major metabolite possess
  562. anti-inflammatory activity and that gammaT at physiological concentrations may be important in human disease
  563. prevention."
  564. </p>
  565. <p>
  566. Biosci Biotechnol Biochem 1992 Sep;56(9):1420-3.<strong>
  567. Effects of alpha-tocopherol and tocotrienols on blood pressure and linoleic acid metabolism in the
  568. spontaneously hypertensive rat (SHR).</strong> Koba K, Abe K, Ikeda I, Sugano M. Both alpha-tocopherol
  569. and a 1:1.7 mixture of alpha-tocopherol and tocotrienols at a 0.2% dietary level significantly depressed the
  570. age-related increase in the systolic blood pressure of spontaneously hypertensive rats (SHRs) after 3 weeks
  571. of feeding. <strong>The aortic production of prostacyclin was increased 1.5 times both by alpha-tocopherol
  572. and a tocotrienol mixture, suggesting a possible relevance to their hypotensive</strong> effect. These
  573. vitamins did not influence the delta 6- and delta 5-desaturase activities of liver microsomes, <strong>but
  574. fatty acid profiles of the liver phospholipids predicted a reduction of linoleic acid
  575. desaturation.</strong> These effects were in general more clear with tocotrienols than with
  576. alpha-tocopherol. Platelet aggregation by 5 microM ADP remained uninfluenced. Thus, tocotrienols may have
  577. effects on various lipid parameters somewhat different from those of alpha-tocopherol.
  578. </p>
  579. <p>
  580. Gerontology 1993;39(1):7-18. <strong>Modulation of membrane phospholipid fatty acid composition by age and
  581. food restriction.</strong>
  582. Laganiere S, Yu BP. H.M. "Phospholipids from liver mitochondrial and microsomal membrane preparations were
  583. analyzed to further assess the effects of age and lifelong calorie restriction on membrane lipid
  584. composition." <strong>"The data revealed characteristic patterns of age-related changes in ad libitum (AL)
  585. fed rats:</strong>
  586. <strong>membrane levels of long-chain polyunsaturated fatty acids, 22:4 and 22:5, increased progressively,
  587. while membrane linoleic acid (18:2) decreased steadily with age. Levels of 18:2 fell by approximately
  588. 40%, and 22:5 content almost doubled making the peroxidizability index increase with age.</strong>"
  589. "<strong>We concluded that the membrane-stabilizing action of long-term calorie restriction relates to the
  590. selective modification of membrane long-chain polyunsaturated fatty acids during aging.</strong>"
  591. </p>
  592. <p>
  593. Free Radic Biol Med 1999 Feb;26(3-4):260-5. <strong>Modulation of cardiac mitochondrial membrane fluidity by
  594. age and calorie intake.</strong> Lee J, Yu BP, Herlihy JT. <strong>"The fatty acid composition of the
  595. mitochondrial membranes of the two ad lib fed groups differed: the long-chain polyunsaturated 22:4 fatty
  596. acid was higher in the older group, although linoleic acid (18:2) was lower. DR eliminated the
  597. differences."</strong>
  598. "Considered together, these results suggest that DR <strong>maintains the integrity of the cardiac
  599. mitochondrial membrane fluidity by minimizing membrane damage through modulation of membrane fatty acid
  600. profile."</strong>
  601. </p>
  602. <p>
  603. Lipids 2001 Jun;36(6):589-93. <strong>Effect of dietary restriction on age-related increase of liver
  604. susceptibility to peroxidation in rats.</strong> Leon TI, Lim BO, Yu BP, Lim Y, Jeon EJ, Park DK.
  605. </p>
  606. <p>
  607. Jpn J Pharmacol 1979 Apr;29(2):179-86. <strong>
  608. Effect of linoleic acid hydroperoxide on liver microsomal enzymes in vitro.</strong> Masuda Y, Murano T.
  609. "Rat liver microsomes incubated with linoleic acid hydroperoxide (LAHPO) lost cytochrome P-450 specifically
  610. among the enzymes of microsomal electron transport systems. The loss of cytochrome P-450 content and
  611. glucose-6-phosphatase activity by LAHPO was accompanied by an increase in malondialdehyde (MDA) production."
  612. "These results suggest the possibility that the loss of microsomal enzyme activities during lipid
  613. peroxidation may be attributed<strong>
  614. largely to a direct attack on enzyme proteins by lipid peroxides rather than</strong>
  615. indirectly to a structural damage of microsomal membranes resulting from peroxidative breakdown of membrane
  616. lipids."
  617. </p>
  618. <p>
  619. Ukr Biokhim Zh 2001 Jan-Feb;73(1):43-7. <strong>[Effect of alpha-tocopherol, tocopheryl quinone and other
  620. complexes with tocopherol-binding proteins on the activity of enzymes metabolizing arachidonic
  621. acid]</strong> Parkhomets' VP, Silonov SB, Donchenko HV. Palladin Institute of Biochemistry, National
  622. Academy of Science of Ukraine, Kyiv. alpha-Tocopherol, tocopherylquinon jointly with the proteins tocopherol
  623. acceptors from cytosole <strong>were identified to inhibit the activity of 5-lipoxigenase and so the
  624. synthesis of leukotriene A4 at the early stages providing for A4 hydrolase activation and C4
  625. synthesase,</strong> as well as accelerate leukotrienes B4 and C4 synthesis at the further stages
  626. respectively changing the final spectrum of leukotriens in the organism tissues. Firstly, the leading role
  627. of proteins complexes capable to strengthen the effect of alpha-tocopherol and tocopherylquinon on
  628. arachidonic acid oxidative metabolism was determined.
  629. </p>
  630. <p>
  631. Int J Vitam Nutr Res 1981;51(1):26-33. <strong>[Effect of vitamin E on the synthesis of polyunsaturated
  632. fatty acids]</strong> Patzelt-Wenczler R. The formation of polyunsaturated fatty acids is influenced by
  633. vitamin E. The enzyme of the endoplasmic reticulum isolated from rat liver responsible for chain elongation
  634. and desaturation showed higher activity under vitamin E-deficiency. The activity was raised both per mg
  635. protein and per mg DNA. The application of alpha-Tocopherol to the vitamin E-deficient animals caused the
  636. normalization of the enzyme activity within 48 hours. This indicates a regulatory function of
  637. alpha-Tocopherol in the process of oxidation.
  638. </p>
  639. <p>
  640. Lipids 2001 May;36(5):491-8. <strong>Correlation of fatty acid unsaturation of the major liver mitochondrial
  641. phospholipid classes in mammals to their maximum life span potential.</strong>
  642. Portero-Otin M, Bellmunt MJ, Ruiz MC, Barja G, Pamplona R.
  643. </p>
  644. <p>
  645. Free Radic Biol Med 1999 Oct;27(7-8):729-37. <strong>Age-dependent increase of collagenase expression can be
  646. reduced by alpha-tocopherol via protein kinase C inhibition.</strong> Ricciarelli R, Maroni P, Ozer N,
  647. Zingg JM, Azzi A. "Our in vitro experiments with skin fibroblasts suggest that alpha-tocopherol may protect
  648. against skin aging by decreasing the level of collagenase expression, which is induced by environmental
  649. insults and by aging."
  650. </p>
  651. <p>
  652. Prostaglandins Leukot Essent Fatty Acids 1991 Oct;44(2):89-92. <strong>Inhibition of PGE2 production in
  653. macrophages from vitamin E-treated rats.</strong> Sakamoto W, Fujie K, Nishihira J, Mino M, Morita I,
  654. Murota S.
  655. </p>
  656. <p>
  657. Int J Vitam Nutr Res 1990;60(1):26-34. <strong>The influence of vitamin E on rheological parameters in high
  658. altitude mountaineers.</strong> Simon-Schnass I, Korniszewski L. <strong>"The erythrocyte filterability
  659. was unaltered in the vitamin E group in comparison with baseline but was significantly impaired in the
  660. control group."</strong>
  661. </p>
  662. <p>
  663. Neurobiol Aging 1991 Jan-Feb;12(1):55-9. <strong>Aging and food restriction: effect on lipids of cerebral
  664. cortex.</strong> Tacconi MT, Lligona L, Salmona M, Pitsikas N, Algeri S. In experimental animals dietary
  665. restriction reduces the body weight increase due to aging, increases longevity and delays the onset of
  666. age-related physiological deterioration, including age-related changes in serum lipids. Little is known
  667. about the influence of food restriction on brain lipids, whose concentration and composition have been shown
  668. to change with age. We studied whether some biochemical and biophysical parameters of rat brain membranes,
  669. known to be modified with age, were affected by a diet low in calories, in which 50% of lipids and 35% of
  670. carbohydrates have been replaced by fibers. The diet was started at weaning and maintained throughout the
  671. animal's entire life span. Animals fed the low calorie diet survived longer and gained less body weight than
  672. standard diet fed rats. Age-related increases in microviscosity, cholesterol/phospholipid and
  673. sphingomyelin/phosphatidylcholine ratios were <strong>reduced or restored to the levels of young animals in
  674. cortex membranes of 32 old rats fed the low calorie diet, while the age-related increase in mono- to
  675. polyunsaturated fatty acid ratios in phospholipids was further raised.</strong> In conclusion we have
  676. shown that a diet low in calories and high in fibers affects lipid composition in the rat brain, <strong>in
  677. a direction opposite to that normally believed to reduce age-related deterioration of brain
  678. functions</strong>.
  679. </p>
  680. <p>
  681. Toxicol Appl Pharmacol 1993 May;120(1):72-9. <strong>Essential fatty acid deficiency in cultured human
  682. keratinocytes attenuates toxicity due to lipid peroxidation.</strong> Wey HE, Pyron L,<strong>
  683. Human keratinocytes are commonly grown in culture with a serum-free medium. Under these conditions,
  684. keratinocytes become essential fatty acid deficient (EFAD), as determined by gas chromatographic
  685. analysis of cell phospholipid fatty acid composition. Exposure of EFAD keratinocytes for 2 hr to
  686. concentrations of t-butyl hydroperoxide (tBHP) up to 2 mM did not result in toxicity assessed by lactate
  687. dehydrogenase (LDH) release and only a small indication of lipid peroxidation assessed by the release of
  688. thiobarbituric acid-reactive substances</strong> (TBARS). Addition of 10 microM linoleic acid (LA) to
  689. serum-free medium alleviated the EFAD condition by increasing the phospholipid content of LA and its
  690. elongation and desaturation products, arachidonic acid and docosatetraenoic acid. Exposure of
  691. LA-supplemented keratinocytes to tBHP resulted in significant LDH (at 1 and 2 mM tBHP) and TBARS (tBHP
  692. concentration dependent) release. TBARS release was also significantly elevated in unexposed LA-supplemented
  693. keratinocytes (basal release). Co-supplementation with the antioxidant,<strong>
  694. alpha-tocopherol succinate (TS) prevented tBHP (1 mM)-induced LDH release in LA-supplemented cultures.
  695. TS supplementation also attenuated the effect of tBHP on TBARS release, but when compared to
  696. TS-supplemented EFAD cultures, LA</strong> supplementation still led to increased tBHP-induced TBARS
  697. release. Keratinocyte cultures are potentially useful as an alternative to animals in toxicology research
  698. and testing. It is important, however, that the cell model provide a response to toxic insult similar to
  699. that experienced in vivo. Our results suggest that fatty acid and antioxidant nutrition of cultured
  700. keratinocytes are important parameters in mediating the toxic effects of lipid peroxidation.
  701. </p>
  702. <p>
  703. Cancer Lett 1997 Jan 1;111(1-2):179-85. <strong>Subcutaneous, omentum and tumor fatty acid composition, and
  704. serum insulin status in patients with benign or cancerous ovarian or endometrial tumors. Do tumors
  705. preferentially utilize polyunsaturated fatty acids?</strong> Yam D, Ben-Hur H, Dgani R, Fink A, Shani A,
  706. Berry EM.
  707. </p>
  708. <em>
  709. AC Chan, J. of Nutrition, 1998</em>
  710. "The response-to-injury hypothesis explains atherosclerosis as a chronic inflammatory response to injury of the
  711. endothelium, which leads to complex cellular and molecular interactions among cells derived from the
  712. endothelium, smooth muscle and several blood cell components. Inflammatory and other stimuli trigger an
  713. overproduction of free radicals, which promote peroxidation of lipids in LDL trapped in the subendothelial
  714. space. Products of LDL oxidation are bioactive, and they induce endothelial expression and secretion of
  715. cytokines, growth factors and several cell surface adhesion molecules. The last-mentioned are capable of
  716. recruiting circulating monocytes and T lymphocytes into the intima where monocytes are differentiated into
  717. macrophages, the precursor of foam cells. In response to the growth factors and cytokines, smooth muscle cells
  718. proliferate in the intima, resulting in the narrowing of the lumen. Oxidized LDL can also inhibit endothelial
  719. production of prostacyclin and nitric oxide, two potent autacoids that are vasodilators and inhibitors of
  720. platelet aggregation. Evidence is presented that vitamin E is protective against the development of
  721. atherosclerosis. Vitamin E enrichment has been shown to retard LDL oxidation, inhibit the proliferation of
  722. smooth muscle cells, inhibit platelet adhesion and aggregation, inhibit the expression and function of adhesion
  723. molecules, attenuate the synthesis of leukotrienes and potentiate the release of prostacyclin through
  724. up-regulating the expression of cytosolic phospholipase A2 and cyclooxygenase. Collectively, these biological
  725. functions of vitamin E may account for its protection against the development of atherosclerosis."
  726. <p>
  727. 6: Early Hum Dev 1994 Nov 18;39(3):177-88 Vitamin A and related essential nutrients in cord blood:
  728. relationships with anthropometric measurements at birth. Ghebremeskel K, Burns L, Burden TJ, Harbige L,
  729. Costeloe K, Powell JJ, Crawford M. Institute of Brain Chemistry and Human Nutrition, Queen Elizabeth
  730. Hospital for Children, London, UK. Following the advice given by the Department of Health to women who are,
  731. or may become pregnant, not to eat liver and liver products because of the risk of vitamin A toxicity, the
  732. concentrations of vitamins A and E, and copper, magnesium and zinc in cord blood were investigated. The
  733. study was conducted in Hackney, an inner city area of London. Esters of vitamin A were not detected in any
  734. of the samples, indicating that there was no biochemical evidence of a risk of toxicity. Indeed, vitamin A
  735. correlated significantly with birthweight, head circumference, length, and gestation period. There was also
  736. a significant positive relationship between zinc and birthweight. In contrast, copper showed a negative
  737. correlation with birthweight and head circumference. Vitamin E and magnesium were not associated with any of
  738. the anthropometric measurements, although magnesium showed an increasing trend with birthweight. The data
  739. suggest that most of the mothers of the subjects studied may have been marginal with respect to vitamins A
  740. and E and zinc. In those with low birthweight babies. a higher intake would have improved their nutritional
  741. status and possibly the outcome of their pregnancy. For these low-income mothers, liver and liver products
  742. are the cheapest and the best source of vitamins A and E, haem iron, B vitamins and several other essential
  743. nutrients; hence the advice of the Department of Health may have been misplaced.
  744. </p>
  745. <p>
  746. © Ray Peat 2006. All Rights Reserved. www.RayPeat.com
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