[ effect of Pistacia khynjuk on humoral immune system of wistar rats]

Plants from the genus Pistacia family such as Pistacia atlantica, Pistacia vera and Pistacia khynjuk are considered as herbal medicines. Antibacterial and anti-inflammatory effects of these plants have been confirmed. The aim of the current study was to find the effect of Pistacia khynjuk on humoral immune system of Wistar rats. This is an experimental study which was conducted at Yasuj University of Medical Sciences in 2009. Forty male Wistar rats were randomly allocated into four groups of ten animals and orally received 10 mg/kg of the extract of nucleus, cutin and fruit of Pistacia khynjuk respectively, every day for two weeks. The control group received only placebo. Immuno-reactivity was induced using BCG vaccine [IP] with Freund's complete adjuvant [CFA]. The titer of IgG and IgM were measured after the treatment using ELISA method. Moreover, the cervical lymph nodes and spleen of animals were excised and the volume and density of the primary and secondary follicle was evaluated by steriology. The collected data were analyzed by the SPSS using one-way ANOVA. The differences in the mean level of IgG and IgM between the treated and the control animals were not significant [p>.05]. Also, the mean volume of the spleen and cervical lymph nodes of the first three groups in comparison with the control animals were not significantly [p>/05]. Findings of this study showed that the Pistacia khynjuk did not have any direct effect on the activity of humoral immune system and the increasing of antibody level among Wistar rats

[ effect of silybum marianum on GFAP and spatial memory in a mouse model of alzheimer's disease]

Studies have shown that Silybum marianum have high levels of antioxidant polyphenolic substances and have neuro-protective effects on neurodegenerative diseases. Accordingly, this study was conducted to determine the possible effect of Silybum marianum on expression of and spatial memory in a mouse model of Alzheimer's disease. This experimental study was conducted at Yasuj University of Medical Sciences in 2009. Thirty adult male Wistar rats were allocated in three groups: sham group, experimental group, and lesion group, each consisting of ten rats. The experimental and lesion groups received Ibotonic acid of the NBM nucleus in stereotaxic apparatus whereas the sham group underwent surgical procedure without any injection. The experimental group received 200mg/kg of Silybum mirianum extract orally, diluted in 1% Arabic gum. Also the sham group received 1% Arabic gum every day for four weeks. The lesion group did not receive anything. The behavioral assessment was measured, after treatment, by using of Y maze test on day 7 and 28 in all groups. The ELISA method was used to measure the GFAP level in Hippocamp at the end of behavioral assessment. The collected data was analyzed by the SPSS software using ANOVA and Repeated Measures of Analysis Variance tests. Improvement of behavioral performance of the experimental animals compared to the lesion and sham groups were increased significantly on day 7 and 28 [P<0.01 and P<0.001 respectively]. The ELISA method showed that the level of the GFAP synthesis decreased in the experimental group compared to the lesion and sham groups [P<0.001]. The Silybum marianum plant has a protective effect on the nerve tissue in a mouse model of Alzheimer's disease by decreasing of the GFAP synthesis and lead to the improvement of behavioral performance