Spontaneous pineal body tumours (pinealomas) in Wistar rats; a histological and ultrastructural study.
نویسندگان
چکیده
The pathology of 5 cases of pinealomas in Wistar rats used in long-term toxicological studies is described both grossly, microscopically and ultrastructurally, together with a review of the related literature.
منابع مشابه
The Ultrastructural Changes of the Sertoli and Leydig Cells Following Streptozotocin Induced Diabetes
Objective(s) This investigation was conducted to evaluate the effects of diabetes on the structure and function of testicular tissue. Materials and Methods Diabetes was induced in male adult rats by a single intraperitoneal injection of streptozotocin. Body and testicular weight, hormonal analyses, histological and ultrastructural analyses were measured. Results The body and testicular we...
متن کاملPineal and Hypophyseal Responses to Selenium Treatments in Light Deprived Adult Female Wistar Rats
Dark is a generally known potent stimulus for melatonin secretion. Studies have also reported that pineal and hypophyseal endocrine secretions are influenced by nutritional factors. The study was designed to investigate the combined effect of selenium supplementations and light deprivation on pineal and hypophyseal secretions in female Wistar rats. 36 female cyclical Wistar rats were divided in...
متن کاملCircadian and seasonal variations in pineal gland intercellular canaliculi in the white rat.
Seventy Wistar rats are used to study the changes in pineal intercellular canaliculi over a 21-hour period and for two different photoperiods (pre-autumn, first week of September, and winter, first week of February). The study considers these changes at pineal body, cortical and medullar level separately, and compares the values obtained. The results show variations in canalicular surface at di...
متن کاملThe role of pineal gland and exogenous melatonin on the irradiation stress response of suprarenal gland.
Pineal gland has and antistressogenic role. Its main hormone, melatonin, has radio protective effect on endocrine and other dynamic tissues. In our previous study, we have shown that pinealectomy changes the behavior of suprarenal gland in totally irradiated rats. The aim of this study is to evaluate the effect of exogenous melatonin on suprarenal gland of rats with or without pineal gland. Fou...
متن کاملUltrastructural Changes in Spinal Motoneurons and Locomotor Functional Study after Sciatic Nerve Repair in Conduit Tube
Objective(s) Motor deficit and neuron degeneration is seen after nerve transection. The aim of this study is to determine whether a poled polyvinelidene fluoride (PVDF) tube with other supportive strategies can protect the neuronal morphology and motor function after sciatic nerve transaction in rats. Materials and Methods After transection of the left sciatic nerve in 60 male Wistar rats (2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Laboratory animals
دوره 18 3 شماره
صفحات -
تاریخ انتشار 1984