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Biomedical subjects

D J Byers

Publications and source records attributed to D J Byers.

3 recordsLinked to original sources

Malignant hyperthermia.

Malignant hyperthermia is a rare disease triggered by succinylcholine and the volatile anesthetic agents in genetically predisposed individuals. Recent studies have implicated an abnormality in the calcium release channel of the sarcoplasmic reticulum in skeletal muscle as the likely etiology. Genetic studies have narrowed the search for the chromosomal abnormality to human chromosome 19. Although the mortality from this disorder has dramatically decreased in the past decade due to the discovery of dantrolene, elective diagnosis of the disorder is only now appearing on the horizon.

Anesthesia

Estradiol and progesterone suppress feeding induced by 2-deoxy-D-glucose.

The feeding response to 2-deoxy-d-glucose (2DG) was measured in gonadally intact females (NORM) during estrus (EST) or diestrus (DIES) and in ovariectomized (OVEX) rats following injections of estradiol benzoate and progesterone (HORM) or oil (OIL). In both groups the response to 2DG under conditions of EST or HORM was significantly suppressed relative to DIES or OIL. The suppressant effect of hormones on 2DG feeding was not accounted for by the suppressant effects of ovarian hormones on ad lib feeding or a function of the body weight of the subject. The results are discussed in the context of ovarian hormonal effects on glucostatic control of feeding.

Animals