Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Medicine and Health Sciences
The Effects Of Constant Darkness And Constantlight On The Pineal Gland And Thymusmorphology In The Rats, Nihal İçten, Filiz Karagöz, K. Ali Güneç
The Effects Of Constant Darkness And Constantlight On The Pineal Gland And Thymusmorphology In The Rats, Nihal İçten, Filiz Karagöz, K. Ali Güneç
Turkish Journal of Medical Sciences
It is known that periods of constant darkness and constant light cause stim-ulation and inhibition of melatonin secretion from the pineal gland. It is also suggested that neuroendocrine responses to environmental stimuli, such as light, can influence immune responses through the pineal gland. For these reasons, in this study the effects of the alterations in the photoperiod rhythm on the pineal gland and thymus morphology were experimentally investigated. 30 Swiss albino rats, aged 4 wk, were divided into 3 groups. Group I rats were kept in a dark room, group II in a room under a bright artificial light and …
Renal Ultrastructural Alterations Followingadministration Of Diethylstilbestrol, Bilge Onarlioğlu, Yasemin Günay, İsmihan Göze, Emel Koptagel
Renal Ultrastructural Alterations Followingadministration Of Diethylstilbestrol, Bilge Onarlioğlu, Yasemin Günay, İsmihan Göze, Emel Koptagel
Turkish Journal of Medical Sciences
Diethylstilbestrol (DES), nonsteroid in structure, is an artificial estrogen derivative and is used as an anabolic agent. It is known that diethylstilbestrol causes genetic disorders and toxic effects leading up to carcinoma even in amounts below its residual levels. For this purpose, a dose of 60µm/kg/day of DES dissolved in 0,1 ml corn oil has been administered to rats by oral gavage for varying periods of 20, 50 and 100 days periods. Rat renal tissue samples, following routine electron microscopical procedure, have been examined by transmission electron microscopy. Following diethylstilbestrol administration, glomerular capilleries seemed dilated along with occasional basement membrane …
Neuronal Differentiation In The Cerebral Cortexof The Rat: A Golgi-Cox Study, Necdet Demi̇r, Ramazan Demi̇r
Neuronal Differentiation In The Cerebral Cortexof The Rat: A Golgi-Cox Study, Necdet Demi̇r, Ramazan Demi̇r
Turkish Journal of Medical Sciences
The development of cerebral cortex neurons has been studied in different stages of pre- and postnatal periods of rats. In order to show the neuronal processes, the Golgi-Cox impregnation technique was used. The first neuronal process development was observed in the cranial and caudal poles of the cerebral cortex during the 15th prenatal day and continued spreading from the lateral regions and poles towards the dorsocentral regions of the hemispheres. The cells which showed the first impregnation in the cerebral cortex, were bipolar cells and their bodies were located in the deep regions of the hemisphere wall. Primitive multipolar cells, …
The Effects Of Shock Waves On The Rat Fetus, Orhan Yalçin, Lütfi Tahmaz, Zuhal Yumbul, İdris Bi̇lgi̇ç
The Effects Of Shock Waves On The Rat Fetus, Orhan Yalçin, Lütfi Tahmaz, Zuhal Yumbul, İdris Bi̇lgi̇ç
Turkish Journal of Medical Sciences
There is an ongoing controversy regarding shock wave lithotripsy (SWL) contraindicated during pregnancy (1, 2). While the effects of shock waves on a variety of cells in both clinical and experimental studies are well documented, their effects on the fetus remain to be clarified. In this study, we investigated the effects of SWL on the rat fetus. On the 8th, 11th, 14th and 17th days of pregnancy, 100, 250 or 500 shock waves were produced with a Multimed 2001 ELMED Systems Lithotriptor. In ongoing pregnancy, the effects of SWL on fetuses ranged from mild in early pregnancy to moderate and …