We treated genetically mast cell-deficient WCB6F1 Sl/Sld mice and the congenic normal (WCB6F,-+/+) mice with the c-kit ligand recombinant rat stem cell factor" (rrSCF'"; 100 ,ug/kg per d, subcutaneously) or with vehicle for 21 d, then passively sensitized the mice with anti-dinitrophenol3 40 immunoglobulin E (IgE) antibodies, and 1 d later measured the changes in heart rate, pulmonary dynamic c...

Objective(s): Due to the prevalence and pervasiveness of stress in modern life and exposure to both chronic and acute stresses, it is not clear whether prior exposure to chronic stress can influence the impairing effects of acute stress on memory retrieval. This issue was tested in this study. Materials and Methods: Adult male Wistar rats were randomly assigned to the following groups: control,...

Introduction: Certain types of chronic mental stress impair memory. On the other hand, crocin is introduced in the medical literature as an effective component of saffron with remedial effects on memory impairment. This study investigated the effects of crocin on spatial and cognitive memories, locomotor activity, novel recognition conditions and serum corticosterone levels in rats under chroni...

background crocus sativus l. (saffron), which belongs to the iridaceae family, is widely cultivated in iran. cardiovascular effects of saffron has been established in some studies but the effects of chronic administration of saffron (c. sativus) stigma aqueous extract on blood pressure has not been investigated. objectives in this study the effects of saffron (c. sativus) stigma aqueous extract...

Background: Metabolic disturbances and dyslipidemia are among the most important medical problems in human society. Their effects on the mortality of coronary heart disease (CHD) have lead to many investigations about them. Materials and Methods: An epidemiologic cross-sectional study was carried out on 10136 persons selected randomly in Tehran urban district 13 with a minimum age of 20 years ...

Introduction: Psychotropic drugs exert their effects, in part, by increasing neurotrophin levels in the brain. Nerve growth factor (NGF) protein levels after treatment with only a limited number of psychotropics have been determined. The present study was designed in order to evaluate the effects of acute and chronic administration of different psychotropic drugs on NGF protein levels in fiv...