Diurnal and seasonal changes in endogenous melatonin levels in the blood plasma in dogs.

نویسندگان

  • R S Zań
  • Z Roliński
  • C J Kowalski
  • A Bojarska-Junak
  • J Madany
چکیده

This paper describes research on the levels of endogenous melatonin (MLT) in the blood serum in dogs in different seasons (March, June, September, December) and at different times of day (11:00, 12:00, 23:00, 24:00 and 1:00), using immunoassay method. Blood samples were collected in the diurnal cycle, in consecutive seasons. The conducted studies show that MLT levels undergo clear changes in both the diurnal cycle, as well as in seasonal one in this species.

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

Seasonal Changes of HbA1c Levels in Type 2 Diabetes Mellitus Patients

Objective: There are changes in plasma glucose and HbA1c of type 2 diabetes mellitus (T2DM) patients in different seasons. HbA1c levels may increase during winter season in most T2DM patients without weight gain. In this study, we described the seasonal changes of HbA1c levels in T2DM patients. Materials and Methods: This analytical cross-sectional study conducted from 2013 to 2017 on 402 pati...

متن کامل

The Effect of Melatonin on Pediatric Drug-Resistant Epilepsy; a Randomized Double Blind Clinical Trial

BackgroundAbout 15 to 40% of children with seizures are refractory to standard anti-epileptic drugs and for such patients, other treatments such as surgery and the ketogenic diet can reduce seizure frequency. Melatonin is a natural pineal gland hormone. The use of melatonin for controlling pediatric seizures is still controversial. This study aimed to evaluate the effect of melatonin on seizure...

متن کامل

Melatonin Reduces Cataract Formation and Aldose Reductase Activity in Lenses of Streptozotocin-induced Diabetic Rat

Background: The relationship between the high activity of aldose reductase (AR) and diabetic cataract formation has been previously investigated. The purpose of the present study was to determine the preventing effect of melatonin on streptozotocin (STZ)-induced diabetic cataract in rats.Methods: 34 adult healthy male Sprague-Dawely rats were divided into four groups. Diabetic control and diabe...

متن کامل

The timing of reproductive activity in seasonal breeding sheep relies on daily photoperiodic signals being relayed to provide information on the time of year

structural and immunocytochemical changes taking place during the day and at night in developing sheep pineal gland under natural non-stimulatory photoperiods (summer solstice). Additionally, the diurnal cycle of plasma melatonin levels was charted and differences between diurnal and nocturnal pineal melatonin concentrations were analyzed. 36 ewes of three different ages were examined: infants ...

متن کامل

Melatonin and aging: prospects for human treatment.

Human life span, with or without modern medicine is around 85-95 years. All living creatures have their inner clock that measures their daily (circadian) and their seasonal (circannual) time. These time changes are mediated by the alteration of levels of melatonin, an evolutionary ancient hormone, which is produced in many body tissues, including the pineal gland, retina and the gastrointestina...

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:
  • Polish journal of veterinary sciences

دوره 16 4  شماره 

صفحات  -

تاریخ انتشار 2013