Results 231 to 240 of about 44,060 (259)

Reaction of rat brain capillaries to immobilization stress

Neuroscience and Behavioral Physiology, 2008
The calcium adenosine triphosphate method of Chilingaryan was used to study the morphofunctional state of the capillary component of the microcirculatory bed of the brain in rats at different time points after experimental immobilization stress (fixation of the animal on its back for 2 h).
openaire   +2 more sources

Impact of Immobilization Stress on the Redox System in Prenatally Stressed Rats

Bulletin of Experimental Biology and Medicine
The dynamics of protein oxidative modification, superoxide dismutase (SOD) activity, and reduced glutathione levels were studied in the control and prenatally-stressed male rats following immobilization stress. The control group consisted of intact males not exposed to prenatal stress.
A V, Vyushina, A V, Pritvorova, G I, Kholova   +2 more
openaire   +2 more sources

Effect of Immobilization Stress on Gonadotropins and Sex Steroids

Journal of Evolutionary Biochemistry and Physiology, 2003
The effects of the acute immobilization stress on follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol, and testosterone levels in rats were evaluated. The male and female rats were grouped in control and stress groups (7 animals in each group).
openaire   +3 more sources

Effect of environmental stress and immobilization on stress physiological variables in farmed mink

Behavioural Processes, 1991
The effect of cage size and nest box environment on plasma cortisol, number of eosinophil leucocytes, and on frequency of leucocyte groups was measured on 132 farmed mink. The experiment included three cage sizes (0.10 m(2), 0.27 m(2), and 1.1 m(2)) and cages with and without nest boxes. Furthermore, the effect of daily immobilization a mink trap for 5
S W, Hansen, B, Damgaard
openaire   +2 more sources

Effects of Immobilization Stress on Renal Sympathetic Neurotransmission

Clinical and Experimental Hypertension. Part A: Theory and Practice, 1992
The effects immobilization stress on renal sympathetic neurotransmission as well as on heart, spleen and adrenal catecholamine content were examined in the rat. A single 2.5 hr stress period produced significant increases in blood pressure, heart rate, plasma norepinephrine and plasma epinephrine concentrations.
openaire   +2 more sources

Analgesia produced by immobilization stress and an enkephalinase inhibitor in amphibians

Pharmacology Biochemistry and Behavior, 1995
The role of endogenous opioids in modulating pain transmission in amphibians was examined by two methods known to activate endogenous opioids in mammals. Analgesia was assessed using the acetic acid test in the Northern grass frog, Rana pipiens. One or 2 h of immobilization produced a significant analgesia lasting for at least 90 min. Systemic, but not
C W, Stevens, S, Sangha, B G, Ogg
openaire   +2 more sources

Immobilization Stress and Direct Glucocorticoid Effects on Rat Septohippocampus

International Journal of Neuroscience, 1988
The rat septohippocampal cholinergic system to a large extent regulates the adaptive physiological and behavioral response to stress. The mesoseptal dopaminergic (DA) system, one of the converging inputs to the lateral septum, exerts a tonic inhibitory action on the septohippocampal cholinergic neurons.
Y, Finkelstein, M, Sternfeld, Y, Yegana, N, Ben-Menahem, I, Hod   +4 more
openaire   +2 more sources

Effects of immobilization stress on shock discrimination performance in rats

Physiology & Behavior, 1982
It has been suggested that acute stress induces analgesia in rats and mice. However, stress can have a myriad of debilitating effects on organisms, and it is not clear whether stress decreases the perceived intensity of the painful stimulus (i.e., a change in sensitivity) or decreases the willingness or ability of the organism to carry out the ...
D M, Grilly, J P, Dugovics
openaire   +2 more sources

Mechanism of oxidative stress in skeletal muscle atrophied by immobilization

American Journal of Physiology-Endocrinology and Metabolism, 1993
To clarify the mechanism of oxidative stress in skeletal muscle atrophied by immobilization, we measured the activities of antioxidant enzymes and xanthine oxidase (XOD) and carried out the cytochemical study of hydrogen peroxide in a typical slow red muscle, the soleus.
H, Kondo, I, Nakagaki, S, Sasaki, S, Hori, Y, Itokawa   +4 more
openaire   +2 more sources

The role of catecholamines in lethal immobilization stress.

Acta physiologica Hungarica, 1990
A 6 h immobilization stress was found to be lethal for rats weighing 125 g in average. Stress of 4 h was sublethal for the majority of these rats, however, simultaneous administration of adrenaline turned the sublethal effect to lethal. Death occurred in the fifth or sixth hour measured from the beginning of the stress, independently of the fact ...
openaire   +1 more source