نتایج جستجو برای: shuttle box
تعداد نتایج: 92942 فیلتر نتایج به سال:
The decrease in body temperature (T(b)) observed in most vertebrate classes in response to hypoxia has been attributed to a regulated decrease in set-point, protecting organs against tissue death due to oxygen depletion. Hypoxia, however, imparts particular challenges to metabolic function which may, in turn, affect thermoregulation. In ectotherms, where thermoregulation is mainly behavioural, ...
Publisher’s Note: Shuttle-box systems for studying preferred environmental ranges by aquatic animals
introduction: lead (pb) is a neurotoxin that its different effects on the central nervous system are well-known. previous studies have reported the potent effects of vitamin c on memory.the present study was undertaken to evaluate the protective effects of vitamin c against leadinduced amnesia. methods: male wistar rats were divided into 4 groups: the control (saline), negative control (lead), ...
Shuttle vectors carrying the origins of replication that function in Escherichia coli and two capnophilic rumen bacteria, Mannheimia succiniciproducens and Actinobacillus succinogenes, were constructed. These vectors were found to be present at ca. 10 copies per cell. They were found to be stably maintained in rumen bacteria during the serial subcultures in the absence of antibiotic pressure fo...
introduction: intracerebroventricular (i.c.v.) injection of streptozotocin (stz) to rodents has been reported as an appropriate model for sporadic dementia of alzheimer's type (sdat), characterized by a progressive impairment of memory. however, very little or nothing is known about non-cognitive behavioral effects in the stz model. this study was carried out in order to show the protectiv...
Following shuttle-box avoidance training, 10 rats were assigned to each of 6 groups, matched on the basis of trials to acquisition criterion. During extinction, Ss were detained in the presence of the CS for intervals of 0-20 sec. before being allowed to perform the avoidance response. The rate of extinction increased with the duration of detainment. The results are interpreted in terms of both...
Objective(s)Previous studies have shown that vitamin B as well as folate supplementation has been implicated in cognitive and neurodegenerative disorders including Alzheimer’s and Parkinson's diseases. The aim of present study was to evaluate the effects of folic acid on passive avoidance task and motor coordination in healthy adult male rats.Materials and MethodsAnimals were randomly divided i...
Background and purpose: This study aimed at investigating the effect of hydroalchoholic extract of sumac (Rhus coriaria L.) on expression of passive avoidance learning in male rats. Materials and methods: In an experimental study, 24 adult Wistar rats weighing 230±20 gr were divided into three groups to receive solvent extract (DMSO), and 25 and 50 mg/kg of the sumac extract. Passive av...
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