Background: Ascorbic acid (AA) as a vitamin and neuromodulator is present in the most part of CNS such as nucleus accumbens shell (Acbsh), so the main purpose of this investigation was to evaluated the effect of AA and their Co-administration in Acbsh on anxiety and motor activity of rat by Open Field Test(OFT). Methods: Forty nine adult male Wistar rats (220-270 g) were used into 7 grou...

Objective(s): With no substantial cost, we injected L-arginine into the rat’s corpus callosum (CC) to create animal model of multiple sclerosis (MS) and investigated the pre-injection effect of gold nanoparticles (GNPs). Materials and Methods: Adult male Wistar rat (250-300 g) was surgically cannulated at the CC, and after recovery it was injected L-arginine (3-200 µg/rat, intra-CC) once ...

Normal and neoplastic rat liver was analyzed for deoxycytidylate deaminase and thymidylate synthetase. For these assays, highly sensitive radiochemical methods capable of detecting the formation of less than 0.001 /~mole of deoxyuridylate and thymidylate were employed. Deoxycytidylate deaminase was found in normal adult rat liver, rat embryo liver, regenerating liver, Novikoff hepatoma, Dunning...

Lycium barbarum is a widely used Chinese herbal medicine prescription for protection of optic nerve. However, it remains unclear regarding the effects of Lycium barbarum polysaccharides, the main component of Lycium barbarum, on in vivo proliferation of adult ciliary body cells. In this study, adult rats were intragastrically administered low- and high-dose Lycium barbarum polysaccharides (1 an...

A transformation assay system using two clonal strains of adult rat liver epithelial cells is described. The carcinogens N-methyl-N'-nitro-N-nitrosoguanidine, methylmethanesulfonate, N-2-fluorenylacetamide, aflatoxin B1, benzo(a)pyrene, dimethylnitrosamine, nitrosopyrrolidine, and dimethyl-4-aminoazobenzene induced anchorage independency in one or both clonal strains, whereas noncarcinogenic an...

We have used a myasthenic serum that in adult rat muscle is specific for acetylcholine receptors (AChRs) in the extra-junctional membrane to characterize the AChRs at developing endplates. Immunocytochemical experiments show that AChRs at endplates in the rat diaphragm bind the myasthenic antibodies during the first week after birth but lose their reactivity during the second and third postnata...

Recent work implicates regulation of neurogenesis as a form of plasticity in the adult rat hippocampus. Given the known effects of opiates such as morphine and heroin on hippocampal function, we examined opiate regulation of neurogenesis in this brain region. Chronic administration of morphine decreased neurogenesis by 42% in the adult rat hippocampal granule cell layer. A similar effect was se...