Current research on physiology of endocrines in animals

A Systematic study on the pancreatic hormones of several animal species has been achieved in the laboratories of the Department of Zoology, Faculty of Science, Ain-Shams University. The research project has been initially founded by Dr. J.L Mansour-Beck in 1958 thence continued by a cooperative team of research workers. It started with an investigation which was intended initially to estimate the potency and durability of insulins from two coflimon Nile fishes, namely, Tilapia nilotica and Mugil cephalous [Said and AHIussaini, 1967]. An inspiration has been gained from the declaration of some previous authors [Zeile 1948, McCormick and Noble 1924, Tohyama et al., 1941 and Mestres 1955] that fish insulin would persist longer in human diabetic patients and might save the trouble of daily injection with the commonly used bovine insulin

neurosecretory system and neurosecretory material in insects

Three types of neurosecretory cells exist in the nervous system of insects [A, B and C- types]. They vary in number in the different parts of the nervous system. Neurosecretory cells display different cyclic phases of activity. Marked histological, cytological and histochemical differences are demonstrated between neurosecretory and non-neurosecretory cells. The problem of neurosecretory system and nature of neurosecretory material has been the subject of investigation by the present writer and one of his collaborators in Gryllotalpa gryllotapa [Banhawy and Anwar, 1970, 1971, 1972 a, b 1973] and in Spodoptera littoralis [Banhawy and Anwar, 1977]. A detailed study was also previously made by Moussa and the present writer oft the secretory organelles and cytochemistry of neurosecretory material in Schistocerca gregaria [Moussa and Banhawy, 1958 a, b; 1959, 1961 a, b]