Ontogeny of the pineal melatonin rhythm and implications for reproductive development in domestic ruminants

نویسندگان

  • Steven M. Yellon
  • Douglas L. Foster
  • Lawrence D. Longo
چکیده

Yellon, S.M., Foster, D.L., Longo, L.D. and Suttie, J.M., 1992. Ontogeny of the pineal melatonin rhythm and implications for reproductive development in domestic ruminants. Anita. Reprod. Sci.,

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

P-169: Melatonin and Fertility

Background: Melatonin is a hormone secreted by the pineal gland in the brain. It helps regulate other hormones and maintains the body’s daily rhythm, telling us when to fall asleep and when to wake up. Ever since we developed electricity and the lightbulb, we have been decreasing our body’s secretions of melatonin by being exposed to bright light after it is dark. Jet lag, shift work and poor v...

متن کامل

بررسی ریتم شبانه آنزیم ان - استیل ترانسفراز در غده پینه آل موش صحرائی

Living organisms have multiple biological rhythms. Some of these rhythms are endogenous and some are under the influence of light and dati cydes during 24-hours. Nowadays periodic changes in melatonin secretion from pineal gland and changes in N-acetyl transferase (NAT) activity which influence the melatonin secretion rate has been acknowledged as a basic rhythm. In this study NAT activity in p...

متن کامل

Seasonal variations of gonadotropins and prolactin in the laboratory rat. Role of maternal pineal gland.

The laboratory rat, a non-photoperiodic rodent, exhibits seasonal fluctuations of melatonin. Melatonin has been found to be readily transferred from the maternal to the fetal circulation. No data exist on the possible influence of maternal pineal gland upon seasonal variations of the offspring. The aim of the present study was to asses the influence of the maternal melatonin rhythm on the offsp...

متن کامل

Diurnal rhythms of pinealocyte ultrastructure, pineal serotonin content and plasma melatonin level in the domestic pig.

The study was conducted to investigate diurnal changes in pinealocyte ultrastructure, pineal serotonin content and plasma melatonin concentration in the domestic pig. The immature pigs (n=24) were kept under a cycle of 12 h light : 12 h dark, with a photophase between 0800 and 2000. During the photophase the animals were exposed to direct sunlight. After four weeks the gilts were slaughtered at...

متن کامل

Light- and temperature-dependence of the melatonin secretion rhythm in the pineal organ of the lamprey, Lampetra japonica.

To identify the characteristics of the oscillator located in the pineal organ, we examined the effects of temperature and light on melatonin secretion rhythm using pineal organs in cultures. At 20 degrees C, the melatonin rhythm was obvious: low secretion during the daytime and high during the nighttime. When the temperature was lowered from 20 to 10 degrees C, the melatonin rhythm disappeared....

متن کامل

ذخیره 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 نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002