[Agroalimentary technologies. Effects on health].
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Biomedical subjects
Publications and source records attributed to Y Raoul.
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In that work, the tetanic's depresses are taken out from the sphere of spasmophilie , concept that the authors take as no pertinent. Those depresses find again the sphere of the nevrosis . It is an answer to the anguish and to the oedipus-problematic of the subject. The authors, by making clear their remarks with several observations, circle the clinic constants escorting the birth of depresses, the bodily expression of the anguish, the psycho-motive peculiarity of the tetanic and the phenomenon of repetition. The authors conclude with a thought over the sense of the symptoms, and over a psycho-somatic medicine that essentially refers to the relation between the doctor and the patient.
Twenty four hours after dosing of pregnant rats with 3H vitamin D3 i.v. the sulfoconjugate was detected only in the kidney. In contrast, 24 or 48 hours after 3H vitamin D3 i.v. dosing the vitamin D3 sulfoconjugate was detected in the plasma, liver, kidney and mammary glands of lactating mother rats.
24 hrs after intravenous injection of vitamin D3 35S sulfoconjugate the radioactivity in kidney is about twice as much in pregnant Rats as in lactating Rats. It decreases from 24 to 48 hrs in pregnant but increases in lactating Rats kidneys. Hydrolysis of vitamin 3H D3 sulfate is detected in kidney and liver extracts, the ratio of free vitamin D3 on vitamin D3 sulfate is higher in pregnant than in lactating animals. Mammary glands of lactating Rats contain mainly the unchanged vitamin D3 sulfate which can be hydrolysed by new born suckling pups.
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The influence of individual or combined administration of vitamin D and hydrocortisone on adrenal phenyl-N-methyltransferase (PNMT) in hypophysectomized rats deprived of vitamin D for 1 month has been studied, as well as adrenal and urinary epinephrine and norepinephrine. Daily administration of vitamin D for 11 days decreased PNMT activity and increased adrenal norepinephrine, whereas adrenal epinephrine remained unaffected. Epinephrine and norepinephrine urinary excretion increased after four and nine injections of vitamin D from the hypophysectomized rats fed a vitamin D free diet for 1 month. Hydrocortisone treatment produced increases in adrenal PNMT and epinephrine as well as in urinary excretion of both monoamines. The effects of individual administration are neutralized when the two products are injected together.
Porcine Calcitonin, together with an alpha adrenergic blocking agent, stimulates amylase release from rat parotid or pancreas, in vitro. A beta blocking agent, propranolol, inhibits this effect. In pancreas only, the coupling of stimulus by calcitonin and phenoxybenzamine involves calcium control.
As soon as two minutes after PTH i.v. injection the blood and kidney AMPc level is maximally increased but the lowering blood calcium effect remained till to ten minutes. At this time the calvaria AMPc level reached its maximum just at the onset of hypercalcemic effect of PTH. Thus AMPc increase in tissues is consistent with the two opposite effects of PTH.
From the kinetic study of the effects of one single growth hormone (GH) injection on the phosphate metabolism, it appears that the influence of GH on the serum phosphate level is biphasic: a decrease is followed by an increase. Conversely GH leads to an early decrease of the urinary phosphate excretion.
Vitamins intakes cannot be absolutely established; they depend on basic composition of the diet, ecological conditions and physiological status of the subject. Nevertheless, approximate norms can be established, which avoid deficiencies or overdosages. Dietary and epidemiologic surveys, assays on volunteers conducted the commissions of F.A.O./O.M.S. Experts and National Authorities to propose values with a practical consensus for vitamins A, B1, B2, PP, P, C, D, B12 folates and some other factors.
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