Neurochemical correlates of alloxan diabetes: I. Ribonucleic acid and protein levels of amphibian brain

Alloxan-induced changes in the collagen characteristics in the skin of male garden lizards, Calotes versicolor, from three age groups

Alloxan diabetes in lizards Calotes versicolor, belonging to three age groups, induced decreased levels of percentage of solubility of collagen in dorsal and ventral skin regions after 7 days of treatment. Old lizards showed greater susceptibility to alloxan diabetes than lizards of the young and middle-age groups. There appears to be no correlation between blood-glucose level and accelerated ageing of collagen. It is suggested that, in alloxan diabetes, metabolites formed in the tissues might accelerate the ageing of collagen.

Neurochemical correlates of alloxan diabetes: gamma amino butyric acid of amphibian brain

The levels of gamma aminobutyric acid decreased, while glutamic acid and aspartic acid levels increased in the forebrain, and decreased in the mid and hind brain regions of frog, Rana cyanophlictis during alloxan diabetes. Since glutamic acid and GABA are intimately involved in the central nervous system (CNS) functions, the alterations occurring in their levels during alloxan diabetes may be significant in bringing about a correlation between the diabetic state and the altered functional dynamics of the CNS.

Influence of gonadal hormones on the developing amphibian brain: changes in ribonucleic acid, protein and activity levels of acetylcholinesterase on in vivo administration of progesterone

The levels of RNA and protein and activity levels of acetylcholinesterase decreased in the brain of developing tadpoles of 13-15-day-old Bufo melanostictus on in vivo administration of progesterone (200 mug/0.1 ml refined peanut oil). These changes suggest decelaration in the activity of the protein-synthetic machinery in progesterone administered animals.