The aim of this study was to investigate the effect of oral administration of branched-chain amino acid (BCAA)-enriched diets after portacaval shunt (PCS) in rats. Fifty-one Sprague-Dawley male rats (200 gm) underwent PCS and 55 a sham operation. Half of the animals received BCAA 142 mg per day through a gastric tube; the other half underwent a sham procedure. Sleep disturbances were evaluated at 7, 14, and 28 days postoperatively by measurement of the excitability of the reticular brain-stem formation during the slow-wave sleep and paradoxical sleep. Animals were killed at the same intervals and liver/body weight ratio, plasma, and brain amino acids, brain norepinephrine, brain serotonin, 5-hydroxyindolacetic acid and histamine were measured. Each group of animals was matched with a similar group of sham-operated rats, i.e., receiving or not receiving BCAA. After PCS (as compared to sham-operated animals) a significant hyperexcitability of the reticular brain-stem formation was found during the slow-wave sleep. The liver/body weight ratio was significantly lower. Tryptophan (free tryptophan in the plasma), phenylalanine, tyrosine, and histidine increased in the plasma and the brain. Leucine and isoleucine were decreased in the plasma. After PCS, an initial decrease at 7 days postoperatively of brain norepinephrine and blockade of the intracerebral metabolism of tryptophan were observed. These changes were transient and progressively disappeared at 14 and 28 days postoperatively. Brain histamine remained at a very high level through the experiment. A good correlation was demonstrated between modification of the sleep disturbance and tryptophan (or 5- hydroxyindolacetic acid) and histamine brain levels.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗

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[Acquired pseudohypoparathyroidism/(PHP) in adult coeliac disease (MCA)].

One case of chronic hypocalcemia and hyperphosphatemia, with an adult coeliac disease, hight P.T.H. level, very low rate of cyclic A.M.P. in urine, and normal rate of cyclid A.M.P. in plasma is described. It is the question of the pseudohypoparathyroidism acquirec as a result of an adult coeliac disease, because of after seven months of diet without gluten the clinical and biological improvement was observed with the increase of the cyclic-AMP clearance into the normal level and its great reactivity on the administration of exogenous PTH. We think to bring an additional analysis of the trouble of renal receptivity to parathyroid hormone.

Adult↗

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[Oestrogens and calcitonin (author's transl) (proceedings)].

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Calcitonin↗

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[Radioimmunological determination of calcitonin (TCT) in the course of thyroid tumor pathology (84 cases)].

The dosage of calcitonin was done in 13 thyroid carcinoma and 71 begnin thyroid tumors. In one case, the preoperative diagnosis of medullary thyroid carcinoma (M.T.C.) was alloved; in one another case of M.T.C. the repeatted dosage allows the evolution survey and the exploration of the family; in a third case, the dosage allows to doubt the diagnosis of M.T.C. in post-mortem. In 71 cases of begnin thyroid tumors, the calcitonin immunoassay is in the normal range. The interest and limits of the preoperative dosage was drawn of this experience.

Adenocarcinoma↗

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