TAGESPERIODISCHE SCHWANKUNGEN DES NEUROHYPOPHYSÄREN OXYTOCINGEHALTES BEI MÄNNLICHEN WISTAR-RATTEN

1968 ◽  
Vol 58 (1) ◽  
pp. 98-100 ◽  
Author(s):  
Annemarie König ◽  
Brigitte Martin
Keyword(s):  
Antidiuretic Hormone ◽  
Constant Temperature ◽  
Adult Male ◽  
Wistar Rats ◽  
Diurnal Changes ◽  
Posterior Pituitary ◽  
Hormone Content ◽  
Male Wistar Rats ◽  
Diurnal Behaviour ◽  
Posterior Pituitary Lobe

ABSTRACT Adult male Wistar rats were kept at a constant temperature (22 ± 0.5° C) and in an alternating light-dark environment consisting of 12 hours of light with 150 lux (7 a. m. – 7 p. m.) and 12 hours of darkness (7 p. m. – 7 a. m.). In the months of March – December groups of animals were decapitated at 4 hourly intervals. Oxytocic activity of posterior pituitary lobe revealed diurnal changes with high values at 2 a. m. and low values at 6 p. m. The results are compared with the diurnal behaviour of antidiuretic hormone content of posterior pituitary lobe.

TAGESPERIODISCHE SCHWANKUNGEN DER URINAUSSCHEIDUNG UND DES ADIURETINGEHALTES IM HYPOPHYSENHINTERLAPPEN MÄNNLICHER WISTAR-RATTEN

1967 ◽  
Vol 54 (2) ◽  
pp. 275-281 ◽  
Author(s):  
Annemarie König ◽  
A. Meyer
Keyword(s):  
Antidiuretic Hormone ◽  
Constant Temperature ◽  
Adult Male ◽  
Urine Output ◽  
Wistar Rats ◽  
Diurnal Changes ◽  
Posterior Pituitary ◽  
Male Wistar Rats ◽  
Posterior Pituitary Lobe

ABSTRACT Adult male Wistar rats were kept at a constant temperature and in an alternating light-dark environment consisting of 12 hours of light with 150 lux (7 a. m. – 7 p. m.) and 12 hours of darkness with 0.1 lux (7 p. m. – 7 a. m.). The urine output was measured at 4-hourly intervals over several 24-hour periods. Diurnal changes with a high excretion at midday and a low excretion at midnight were found. The content of antidiuretic hormone of the posterior pituitary lobe was estimated at 10 a. m., 2 p. m., 6 p. m., and at 10 p. m., 2 a. m., 6 a. m. in the months of March, April and May. The highest amount occurred during darkness with maximal values at 6 a. m., the lowest during light with minimal values at 2 p. m.

scholarly journals Anti‐Fertility Effects of Amlodipine in Adult Male Wistar Rats

2011 ◽  
Vol 25 (S1) ◽  
Author(s):  
Adelaja Abdulazeez Akinlolu ◽  
Olaide Ghazali ◽  
Adebayo Kehinde Adefule
Keyword(s):  
Adult Male ◽  
Wistar Rats ◽  
Male Wistar Rats

scholarly journals Azathioprine and Methotrexate impaired the morphology and functions of the testes in adult wistar rats

2014 ◽  
Vol 31 (02) ◽  
pp. 075-081
Author(s):  
A. Akinlolu ◽  
O. Akinola ◽  
P. Khobe ◽  
K. Obasi ◽  
O. Dada
Keyword(s):  
Adult Male ◽  
Wistar Rats ◽  
Follicle Stimulating Hormone ◽  
Physiological Saline ◽  
Seminiferous Tubules ◽  
Control Group ◽  
Connective Tissues ◽  
Group I ◽  
Male Wistar Rats ◽  
Dose Dependent

Abstract Introduction: AAzathioprine and Methotrexate are both used in the treatment of cancer; and are classified as cytotoxic drugs with reported adverse effects such as oxidative damage to the DNA/RNA, the testes and sperm cells. This study, therefore, tested the hypothesis that AAzathioprine and Methotrexate administrations impair the morphology and functions of the testes in adult male wistar rats. Methods: AAzathioprine (50-150mg per day) and Methotrexate (2.5mg per week) are used in the treatment of cancer in adult Man. We tested the hypothesis that AAzathioprine and Methotrexate impair the morphology and functions of testes in rats. Forty adult male wistar rats (150-230g) were employed in the study: Control Group I received physiological saline while Experimental Groups II - V received oral administrations of 5mg/kg/bodyweight of AAzathioprine per day, 15mg/kg/bodyweight of AAzathioprine per day, 8mg/kg/bodyweight of Methotrexate per week and 20mg/kg/bodyweight of Methotrexate per week respectively for 35 days. Results: Histological examinations of the testes of rats of Groups II - V showed dose-dependent morphological anomalies such as fewer collagen ibers of connective tissues, disrupted seminiferous tubules and scanty spermatozoa when compared to rats of Group I. Statistical analyses showed dose-dependent elevated levels (P≤0.05) of superoxide dismutase and malondialdehyde in testes homogenates of rats of Groups II - V when compared to rats of Group I. This implied increased oxidative stress in rats of Groups II - V. Evaluations of Follicle Stimulating Hormone and Testosterone showed dose-dependent significantly elevated levels (P≤0.05) in rats of Groups II - V when compared to rats of Group I. Conclusions: Our findings are consistent with the stated hypothesis.

scholarly journals Avoidance memory requires CaMKII activity to persist after recall

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Andressa Radiske ◽  
Maria Carolina Gonzalez ◽  
Janine I. Rossato ◽  
Gênedy Apolinário ◽  
João R. de Oliveira ◽  
...  
Keyword(s):  
Protein Kinase ◽  
Adult Male ◽  
Wistar Rats ◽  
Memory Reconsolidation ◽  
Memory Processing ◽  
Conflicting Information ◽  
Male Wistar Rats ◽  
Avoidance Memory ◽  
Avoidance Responses

AbstractAvoidance memory is destabilized when recalled concurrently with conflicting information, and must undergo a hippocampus-dependent restabilization process called reconsolidation to persist. CaMKII is a serine/threonine protein kinase essential for memory processing; however, its possible involvement in avoidance memory reconsolidation has not yet been studied. Using pharmacological, electrophysiological and optogenetic tools, we found that in adult male Wistar rats hippocampal CaMKII is necessary to reconsolidate avoidance memory, but not to keep it stored while inactive, and that blocking reconsolidation via CaMKII inhibition erases learned avoidance responses.

Chronic consumption of Hypericum humifusum leaf extracts impairs epididymis spermatozoa characters in association with oxidative stress in adult male Wistar rats

2017 ◽  
Vol 93 ◽  
pp. 616-625 ◽  
Author(s):  
Imen Hammami ◽  
Ridha Ben Ali ◽  
Afef Nahdi ◽  
Olfa Kallech-Ziri ◽  
Marwa Boussada ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Adult Male ◽  
Wistar Rats ◽  
Leaf Extracts ◽  
Male Wistar Rats

scholarly journals Nicotine e-cigarette vapor inhalation effects on nicotine & cotinine plasma levels and somatic withdrawal signs in adult male Wistar rats

2019 ◽  
Vol 237 (3) ◽  
pp. 613-625 ◽  
Author(s):  
Christian Montanari ◽  
Leslie K. Kelley ◽  
Tony M. Kerr ◽  
Maury Cole ◽  
Nicholas W. Gilpin
Keyword(s):  
Adult Male ◽  
Plasma Levels ◽  
Wistar Rats ◽  
Male Wistar Rats ◽  
Withdrawal Signs
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