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<p></p>
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<strong>Meat physiology, stress, and degenerative physiology </strong>The US Department of
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Agriculture claims that the Pure Food and Drugs Act of 1906 and the Meat Inspection Act of the same year were
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passed because the food industry demanded them. Ordinary historians believe that Upton Sinclair's 1905 serial
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publication of his novel about the meat industry, The Jungle, caused the public and Theodore Roosevelt to
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pressure Congress to pass the laws. Sinclair's descriptions of the use of poisonous preservatives and deodorants
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to disguise the smell of rotten meat angered the public and the president enough to overcome the industry
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pressure that had kept the US Congress from regulating the commercial food supply long after European
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governments had begun regulating food production and sales.Before the government's intervention, it was common
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practice to soak all kinds of meat in water or chemical solutions to increase their weight. At present, the US
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Department of Agriculture, through the mass media and funding the training of food technologists and "meat
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scientists," now takes the position that it is natural for meat to leak water after it is packaged, and says it
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is perfectly legal for meat producers to soak the meat in water with chemicals until it has increased its weight
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by 8%. The chemicals, such as trisodium phosphate (in a solution strength as high as 12%), are chosen because
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they powerfully stimulate swelling and water retention. Considerable amounts of some chemicals, such as sodium
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citrate, are allowed to add to the weight of the meat. The use of ozone and hydrogen peroxide to deodorize meat
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causes instantaneous oxidative changes, including lipid peroxidation and protein carbonyl formation, as well as
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increasing water retention.Most supermarket meat is now packaged with thick diapers so the buyer won't notice
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that he is paying for a sizeable amount of pink water. The USDA has an internet site, and consumer hotlines, to
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inform angry consumers that they are mistaken if they believe that meat shouldn't leak. They explain that meat
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is now "bred" to contain less fat, and so it contains more water, and that it is simply the leanness of the meat
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that accounts for its poor flavor.Before the slaughtered animal is put into the soaking solution to gain a
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specific amount of weight, the animal has almost always been treated in ways that cause it to go to slaughter in
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a state of massive edema. Even before the meat is soaked, the animal has been treated to maximize its water
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retention.Muscle physiologists and endocrine physiologists know that fatigue, stress and excess estrogen can
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cause the tissues to swell hugely, increasing their weight and water content without increasing their protein
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content.As soon as cheap synthetic estrogens, such as DES, became available in the 1940s, their use in animals
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was promoted because it was clear that they caused massive water retention. Women who suffer from
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hyperestrogenism always have a problem with water retention, but they have never been known to suffer from
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over-developed skeletal muscles. In fact, in humans of both sexes, an excess of estrogen has been commonly
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associated with sarcopenia, muscular dystrophy, and atrophy of the skeletal muscles. Similar observations have
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been made in a variety of animals. Meat scientists are the only people I know of who have ever referred to
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estrogen as an anabolic steroid, in the sense of "building muscle."When it was publicized around 1970 that DES
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is powerfully carcinogenic, after it had been used for several decades in the meat industry, its use was
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outlawed, but its illegal use continued and was overlooked by the US government. The Swiss government has
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rejected meat from a large producer in Kansas because it contained DES. Other estrogens are openly used, and the
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US government continues to apply pressure to other countries to accept meat exports containing estrogens.There
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are many ways to increase the water content of meat, besides feeding estrogen to the animal and soaking the meat
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after slaughter. Everything that causes water retention and tissue swelling in the living animal, that is, every
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kind of stress, fatigue, poisoning, malnutrition and injury, will make the animal gain weight, without consuming
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expensive nutritious food. Crowding, fright, and other suffering increase water retention and accelerate the
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breakdown of fats and proteins.The water content of meat shouldn't be increased by any of those methods, not
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only because it is a form of stealing from the consumer, but because it makes the product toxic and
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unappetizing, and makes the production process a degrading experience. Any chemicals, such as estrogen or
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arsenic, that remain in the meat are of course harmful to the consumer, but the changes they produce in the
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animals' tissues are the main problem. When grains and soybeans are used for fattening animals, their
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characteristic fatty acids are present in the meat, and are harmful to the consumer, but their complex
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degradation products, such as isoprene, acrolein, and isoprostanes, remain, along with the complex changes they
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induce in every aspect of the tissue. The reactive products of oxidative fat degradation stimulate, among other
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things, the adaptive/defensive production of polyamines, small molecules derived from amino acids. The
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polyamines, in turn, can be oxidized, producing highly toxic aldehydes, including acrolein (Sakata, et al.,
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2003). These molecules stimulate cell multiplication, and alter, at least temporarily, the way the cell's genes
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function.An excess of water stimulates cell division, and an important mechanism in producing that effect is the
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increased production of polyamines by the enzyme ornithine decarboxylase. This enzyme is activated by an excess
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of water (hypotonicity), by estrogen, and by stress.Besides stimulating cell division and modifying the cell's
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state of differentiation (including developmental imprinting), the polyamines also contribute to nerve cell
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excitation and excitotoxicity. Estrogen and excess water can contribute to nerve cell excitation, for example
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producing convulsive seizures. The polyamines are increased during seizures, and they can affect the stability
|
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of the nerve cells, for example contributing to cocaine's seizure-sensitizing action. Although they tend to
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block free radicals, they accelerate nerve injury (Yatin, et al., 2001), and can contribute to breakdown of the
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blood-brain barrier (Wengenack, et al., 2000, Koenig, et al., 1989).The polyamines are increased in cancers, and
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therapies to block their formation are able to stop the growth of various cancers, including prostate, bowel,
|
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and breast cancer. Metabolites of the polyamines in the urine appear to be useful as indicators of cancer and
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other diseases. (In pancreatic cancer, Yamaguchi, et al., 2004; in cervical cancer, Lee, et al., 2003; in adult
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respiratory stress syndrome, Heffner, et al., 1995.) The quantity of polyamines in the urine of cancer
|
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patients has been reported to be 20 times higher than normal (Jiang, 1990). Polyamines in the red blood cells
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appear to indicate prognosis in prostate cancer (Cipolla, et al., 1990).The prostaglandins in semen have been
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suspected to have a role in producing cervical cancer (Fernandez, et al., 1995).In protein catabolism, one fate
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of the protein's nitrogen is to be converted to the polyamines, rather than to urea. In plants, at least, these
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small molecules help cells to balance osmotic stresses.Adding water to meat, or stressing the animals before
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slaughter, will increase the meat's content of the polyamines, but the longer the meat is stored, the greater
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will be the production of reactive oxygen products and polyamines. The deliberate "aging" of meat is
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something that the meat scientists often write about, but it has a peculiar history, and is practiced mainly in
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the English speaking cultures. When a supermarket in Mexico City began selling U.S.-style meat for the American
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colony, I got some T-bone steaks and cooked them for some of my Mexican friends. The meat wasn't water-logged
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(it was 1962, and the beef had been grown in Mexico), but it had been aged for the American customers, and
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though my friends ate the steaks for the sake of politeness, I could see that they found it difficult. In
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Mexico, even in the present century, butcher shops often don't have refrigeration, and they don't need it
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because they sell the meat immediately. The fresh meat tastes fresh. Traditionally, liver is sold only on the
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day of slaughter, because its high enzyme content causes it to degrade much faster than the muscle meats. When
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it is fresh, it lacks the characteristic bad taste of liver in the US. Both the liver and the muscles
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contain a significant amount of glycogen when they are fresh, if the animal was healthy. At first, the lack of
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oxygen causes the glycogen to be metabolized into lactic acid, and some fatty acids are liberated from their
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bound form, producing slight changes in the taste of the meat. But when the glycogen has been depleted, the
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anaerobic metabolism accelerates the breakdown of proteins and amino acids.In the absence of oxygen, no carbon
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dioxide is produced, and the result is that the normal disposition of ammonia from amino acids as urea is
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blocked, and the polyamines are formed instead. The chemical names of two of the main poly-amines are suggestive
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of the flavors that they impart to the aging meat: Cadaverine and putrescine. After two or three weeks of aging,
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there has been extensive breakdown of proteins and fats, with the production of very complex new mixtures of
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chemicals.Mexicans, despite their low average income, have a very high per capita consumption of meat, as do
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several other Latin American countries. Argentina has a per capita meat consumption of nearly a pound a day.
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There is a lot of theorizing about the role of meat in causing cancer, for example comparing Japan's low
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mortality from prostate cancer, and their low meat consumption, with the high prostate cancer mortality in the
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US, which has a higher meat consumption. But Argentina and Mexico's prostate cancer mortality ranks very
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favorably with Japan's. If meat consumption in the US contributes to the very high cancer rate, it clearly
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isn't the quantity of meat consumed, but rather the quality of the meat.The polar explorer Vilhjalmur Stefansson
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was interested in the health effects of a diet based on meat, because of his observation that fresh meat
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prevented scurvy much more effectively than the fruits and vegetables carried by other polar explorers. He
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commented on the importance of culture and learning in shaping food preferences:"In midwinter it occurred to me
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to philosophize that in our own and foreign lands taste for a mild cheese is somewhat plebeian; it is at least a
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semi-truth that connoisseurs like their cheeses progressively stronger. The grading applies to meats, as in
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England where it is common among nobility and gentry to like game and pheasant so high that the average
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Midwestern American or even Englishman of a lower class, would call them rotten. "I knew of course that,
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while it is good form to eat decayed milk products and decayed game, it is very bad form to eat decayed fish. I
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knew also that the view of our populace that there are likely to be "ptomaines" in decaying fish and in the
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plebeian meats; but it struck me as an improbable extension of the class-consciousness that ptomaines would
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avoid the gentleman's food and attack that of a commoner. "These thoughts led to a summarizing query; If it
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is almost a mark of social distinction to be able to eat strong cheeses with a straight face and smelly birds
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with relish, why is it necessarily a low taste to be fond of decaying fish? On that basis of philosophy, though
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with several qualms, I tried the rotten fish one day, and if memory serves, liked it better than my first taste
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of Camembert. During the next weeks I became fond of rotten fish."Since Stefansson's observations nearly a
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century ago, most Americans have become accustomed to the taste of half-spoiled meat, as part of the process of
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adapting to an industrial-commercial food system. Tests done by food technologists have found that most
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Americans prefer the taste of synthetic strawberry flavor in ice cream to the taste of ice cream made with real
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strawberries. If it took Stefansson only a few weeks to become fond of rotten fish, it isn't surprising that the
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public would, over a period of many decades, learn to enjoy a diet of stale foods and imitation
|
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foods. Polyamines are increased in stressed and stored vegetables, as in aged meats. This defensive
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reaction retards tissue aging, and researchers are testing the application of polyamines to fruits to retard
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their ripening. A plastic surgeon, Vladimir Filatov, discovered that tissue stored in the cold stimulated the
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healing process when used for tissue reconstruction, such as corneal transplants. He found that stressed plant
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tissues developed the same tissue stimulants. Another pioneer of tissue transplantation, L.V. Polezhaev, saw
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that degenerating tissue produced factors that seem to activate stem cells.Although the diffusion of these
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stimulating factors from stressed tissues normally functions to accelerate healing and tissue regeneration,
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under less optimal conditions they are undoubtedly important factors in tissue degeneration and tumor formation.
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For example, the bystander effect (contributing to delayed radiation damage, and producing a field of
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precancerous changes around a cancer), in which substances diffusing from injured tissues damage surrounding
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cells, involves disturbances in polyamine metabolism.The direct, optimal effects of the polyamines are
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protective, but when excessive, prolonged, or without maintained cellular energy, they become harmful.The
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expression of genes involves their physical arrangement and accessibility to enzymes and substrates. The
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negatively charged nucleic acids are associated with positively charge proteins, the histones. The very small
|
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positively charged polyamines can powerfully modify the interactions between histones and DNA. In recent years
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people have begun to speak of the "histone code," as a kind of expansion of the idea of the "genetic code." But
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the polyamines, produced in response to stress, might be thought of as a complex expansion of the "histone
|
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code."The addition of small molecules, methyl and acetyl groups, to the large molecules can regulate the
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expression of genes, and these patterns can be passed on transgenerationally, or modified by stress. Barbara
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McClintock's "controlling factors" were mobile genes that caused the genome to be restructured under the
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influence of stress. Her discoveries were the same as those made by Trofim Lysenko decades earlier, and like his
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observations, McClintock's were angrily rejected until the 1980s, when the genetic engineering industry needed
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some scientific background and natural precedent for their unnatural intervention in the genome.The brain is
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extremely different from a malignant tumor, and the derangements produced by stress, by high cortisol and
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estrogen and an excess of water, are different in the two types of organ (considering the tumor as an ad hoc
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organ), but the polyamines have central roles in the degenerating brain and in the divergent disorganization of
|
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tumors. Their importance in stress physiology is coming to be recognized, along with the meaning of "epigenetic
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development," in which the influence of the environment becomes central, rather than just a place in which the
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"genotype" is allowed to passively express its "genetic potential." Every developmental decision involves an
|
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evaluation of resources and their optimal marshaling for adaptation. The polyamines are part of the cytoplasm's
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equipment for controlling the genome. The ratio between the different types of polyamine governs the nature of
|
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their regulation of cellular functions.The old idea, "one is what one eats," has evolved far beyond ideas of
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simple nutritional adequacy or deprivation, and it's now commonly accepted that many things in foods have fairly
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direct effects on our brain transmitters and hormones, such as serotonin, dopamine, adrenalin, endorphins,
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prostaglandins, and other chemicals that affect our behavior and physiology.In 1957 James McConnell discovered
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that when flatworms were fed other flatworms that had been trained, their performance was improved by 50%,
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compared with normal flatworms. Later, similar experiments were done with rats and fish, showing that tissue
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extracts from trained animals modified the behavior of the untrained animals so that it approximated that of the
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trained animals. Georges Ungar, who did many experiments with higher animals, demonstrated changes in brain RNA
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associated with learning, and he and McConnell believed that proteins and peptides were likely to be the type of
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substance that transmitted the learning.A dogmatic belief that "memory molecules" would be unable to penetrate
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the "blood-brain barrier" allowed most biologists to dismiss their work. Ungar's death, and the hostility of
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most biologists to their work, have caused their ideas to be nearly forgotten for the last 30 years. Negatively
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charged molecules such as ordinary proteins tend to be repelled by negative charges on the wall of capillaries,
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but positively charged molecules spontaneously associate with cellular proteins, and easily penetrate the
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barrier. Highly positively charged molecules tend to concentrate in the brain (Jonkman, et al., 1983), and
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people are currently attempting to use the principle to deliver antibodies (which are normally excluded from the
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brain) therapeutically to the brain by combining them with small positively charged molecules (Herve, et al.,
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2001). This affinity of the brain for positively charged molecules is gradually being recognized as an important
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factor in the toxicity of ammonia and guanidine derivatives. As mentioned earlier, even endogenous polyamines
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can be involved in disruption of the blood-brain barrier.So, apart from the question of exactly what molecules
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were responsible for the learning transfer produced by McConnell and Ungar, there should be no doubt that
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polyamines derived from food can enter tissues, especially the brain. People who eat meat from stressed animals
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are substantially replicating the experiments of McConnell and Ungar, except that people normally eat a variety
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of foods, and each type of food will have had slightly different experiences in its last days of life. But the
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deliberate aging of meat is subjecting it to a standardized stress--two or three weeks of cold storage. Because
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of the great generality of genetic processes, it wouldn't be surprising if cold storage of vegetables turned out
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to produce polyamine patterns similar to those of cold storage meats. Air pollution and other stressful growing
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conditions cause vegetables to have very high levels of polyamines.Prolonged exposure to certain patterns of
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polyamines might produce particular syndromes, but the mere fact of increasing the total quantity of polyamines
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in our diet is likely to increase the incidence of stress-related diseases. Experiments with cells in culture
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show that added polyamines can produce a variety of extremely harmful changes, but so far, there has been almost
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no investigation of their specific regulatory functions, of their "code."Besides rejecting stale foods produced
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under stressful conditions, there are probably some specific ways that we can protect ourselves from polyamine
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poisoning.When the organism is functioning efficiently, its respiration is producing an abundance of carbon
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dioxide, which protectively modifies many systems and structures. Adequate carbon dioxide protects against
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fatigue, cellular and vascular leakiness, edema and swelling.Increasing carbon dioxide will tend to direct
|
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ammonia into urea synthesis, and away from the formation of polyamines. Bicarbonate protects against many of the
|
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toxic effects of ammonia, and since carbon dioxide spontaneously reacts with amino groups, it probably helps to
|
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inactivate exogenous polyamines. This could account for some of the protective effects of carbon dioxide (or
|
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high altitude), for example its anti-seizure, anticancer, and antistress effects.Other things that protect
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against excessive polyamines are procaine and other local anesthetics (Yuspa, et al., 1980), magnesium, niacin,
|
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vitamin A, aspirin, and, in some circumstances, caffeine. Since endotoxin stimulates the formation of
|
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polyamines, a diet that doesn't irritate the intestine is important. Tryptophan and methionine contribute to the
|
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formation of polyamines, so gelatin, which lacks those amino acids and is soothing to the intestine, should be a
|
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regular part of the diet.Because the polyamines intensity the neurotoxic and carcinogenic effects of estrogen
|
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and of polyunsaturated fats, those three types of substance should be considered as a functional unit in making
|
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food choices. (Grass-fed organic beef fresh from a local farm would be a reasonable choice.) Unfortunately, the
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meat industry has maximized all of those dangers, just for the increased weight of their
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product. <strong><h3>REFERENCES</h3></strong>Biull Eksp Biol Med 1993 Jun;115(6):600-2. Ornithine
|
||||
decarboxylase and malignant growth. Berezov TT. Clin Cancer Res. 1999 Aug;5(8):2035-41. Prognostic value of
|
||||
ornithine decarboxylase and polyamines in human breast cancer: correlation with clinicopathologic parameters.
|
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Canizares F, Salinas J, de las Heras M, Diaz J, Tovar I, Martinez P, Penafiel R. J Clin
|
||||
Gastroenterol. 1989 Aug;11(4):434-41. Intestinal autointoxication: a medical leitmotif. Chen TS, Chen PS. The
|
||||
idea that putrefaction of the stools causes disease, i.e., intestinal autointoxication, originated with
|
||||
physicians in ancient Egypt. They believed that a putrefactive principle associated with feces was absorbed in
|
||||
to the general circulation, where it acted to produce fever and pus. This description of the materia peccans
|
||||
represented the earliest forerunner of our present notion of endotoxin and its effect. The ancient Greeks
|
||||
extended the concept of putrefaction to involve not only the residues of food, but also those of bile, phlegm,
|
||||
and blood, incorporating it into their humoral theory of disease. During the 19th century, the early biochemical
|
||||
and bacteriologic studies lent credence to the idea of ptomaine poisoning--that degradation of protein in the
|
||||
colon by anerobic bacteria generated toxic amines. Among the leading proponents of autointoxication was
|
||||
Metchnikoff, who hypothesized that intestinal toxins shortened lifespan. The toxic process, however, was
|
||||
reversed by the consumption of lactic acid-producing bacteria that changed the colonic microflora and prevented
|
||||
proteolysis. The next logical step in treatment followed in the early 20th century when surgeons, chief among
|
||||
them Sir W. Arbuthnot Lane, performed colectomy to cure intestinal autointoxication. By the 1920s, the medical
|
||||
doctrine fell into disrepute as scientific advances failed to give support. However, the idea persists in the
|
||||
public mind, probably as an extension of the childhood habit of toilet training. Prog Urol.
|
||||
1992 Feb;2(1):50-7. [The diagnostic value of erythrocyte polyamines (EPA) in prostatic adenocarcinoma (PA):
|
||||
apropos of 100 patients] [Article in French] Cipolla B, Guille F, Quemener V, Leveque JM, Moulinoux JP, Lobel
|
||||
B.Arch Oral Biol. 2003 Apr;48(4):323-7. Time profile of putrescine, cadaverine, indole and skatole in human
|
||||
saliva. Cooke M, Leeves N, White C.Hum Reprod. 2003 May;18(5):959-68. Nitric oxide inhibits polyamine-induced
|
||||
apoptosis in the human extravillous trophoblast cell line SGHPL-4. Dash PR, Cartwright JE, Whitley
|
||||
GS.Carcinogenesis. 1999 Mar;20(3):493-7. Promotion of intestinal carcinogenesis by dietary methionine. Duranton
|
||||
B, Freund JN, Galluser M, Schleiffer R, Gosse F, Bergmann C, Hasselmann M, Raul F.Br J Cancer. 1995
|
||||
Nov;72(5):1194-9. Evaluation of the significance of polyamines and their oxidases in the aetiology of human
|
||||
cervical carcinoma. Fernandez C, Sharrard RM, Talbot M, Reed BD, Monks N.J Clin Pathol. 1991 May;44(5):410-5.
|
||||
Seminal polyamines as agents of cervical carcinoma: production of aneuploidy in squamous epithelium. Fletcher S,
|
||||
Neill WA, Norval M. The effects of several polyamines found in seminal fluid on the cell cycle and ploidy of
|
||||
three cervical cell lines and of primary epithelial cells cultured from cervical biopsy specimens were monitored
|
||||
by fluorescent flow cytometry. The rate of cell growth did not change but there were indications of either
|
||||
hypodiploidy or hyperdiploidy in some cultures at certain concentrations of spermine and spermidine. An
|
||||
interaction of exogenous polyamines with the DNA of cervical cells was shown to occur, leading to changes in
|
||||
ploidy with, perhaps, the potential to induce or promote dysplasia.Biochem Biophys Res Commun. 1977 Jul
|
||||
11;77(1):57-64. Activation of thyroid ornithine decarboxylase (ODC) in vitro by hypotonicity; a possible
|
||||
mechanism for ODC induction. Friedman Y, Park S, Levasseur S, Burke G.Anal Biochem. 1988 Oct;174(1):88-96.
|
||||
Apparent ornithine decarboxylase activity, measured by 14CO2 trapping, after frozen storage of rat tissue and
|
||||
rat tissue supernatants. Gaines DW, Friedman L, McCann PP. "Ornithine decarboxylase (ODC) activity of rat
|
||||
tissues was measured by the standard 14CO2 trapping method after frozen storage (-60 or -70 degrees C) of the
|
||||
tissues or their 105,000g supernatants." "In the frozen supernatants of liver and spleen, ODC activity changed
|
||||
only slightly after 1 day but increased 29 and 14%, respectively, by 30 days; activity in kidney supernatant
|
||||
decreased 17% after 1 day and remained near that level at 30 days." "With AOA, the ODC activities of the fresh
|
||||
and frozen supernatants were similar, indicating that the large increase in apparent ODC activity in frozen
|
||||
tissue was due to artifacts from the metabolism of ornithine via the mitochondrial pathway. HPLC analysis of the
|
||||
reaction products resulting from the incubation of uniformly labeled [14C]ornithine with the fresh and frozen
|
||||
preparations indicated no increase in putrescine with the frozen preparation."J Dent Res. 1994
|
||||
Jun;73(6):1168-72. Cadaverine as a putative component of oral malodor. Goldberg S, Kozlovsky A, Gordon D,
|
||||
Gelernter I, Sintov A, Rosenberg M.Exp Neurol. 2002 Oct;177(2):515-20. Increased red blood cell polyamines
|
||||
in ALS and Parkinson's disease. Gomes-Trolin C, Nygren I, Aquilonius SM, Askmark H.THE DAILY CITIZEN, April 5,
|
||||
1994. Robert Greene, "Soggy Chickens," AP, April 2, 1994; "Interview with Elaine Dodge," "The chickens soak up
|
||||
to 12 percent of their weight in this water," according to Elaine Dodge of the Government Accountability Project
|
||||
(GAP). J Anim Sci. 2004 May;82(5):1401-9. Preslaughter stress and muscle energy largely determine pork
|
||||
quality at two commercial processing plants. Hambrecht E, Eissen JJ, Nooijent RI, Ducro BJ, Smits CH, den Hartog
|
||||
LA, Verstegen MW.Exp Lung Res. 1995 Mar-Apr;21(2):275-86. Urinary excretion of polyamines in the adult
|
||||
respiratory distress syndrome. Heffner JE, Ali R, Jeevanandam M.Kumamoto Igakkai Zasshi. 1969 Aug
|
||||
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