---

Background: In this research, the effect of hydro-alcoholic extract seed of Coriander was studied on pituitary–ovary hormones and its possible role in infertility and reproductive activity in the immature female rats.
Materials and Methods: In this experimental study, 64 immature female rats of the Wistar were divided to four groups of control, sham and experimental groups that received 150 and 300 mg/kg extract of hydro-alcoholic Coriander seeds. Half of each group was tested on day 28 and others on day 56, randomly. The extracts were orally administered. At the end of 28 and 56 days, blood samples from the heart were taken and serum hormones LH, FSH, estrogen and progesterone were measured using RIA. Data were analyzed by ANOVA and Tukey tests. Level of significance was considered at <0.05.
Results: The mean concentrations of LH and estrogen in the experimental group which received 300 mg/kg of the extract for 28 days and the experimental group which received 150 and 300 mg/kg of extracts for 56 days decreased significantly compared to control group. Concentrations of FSH in the experimental group which received 300 mg/kg of extract for 28 and 56 days decreased significantly compared to control group. Mean concentrations of progesterone in the experimental group which received 150 and 300 mg/kg of extract for 28 and 56 days showed significantly reduction compared to control group.
Conclusion: According to the other studies, Coriander seed contains flavonoid and coumarin compounds. Probably, these components decrease gonadotropins and the enzymes involved in the steroidogenesis and reduce the secretion of estrogen and progesterone.

---

Background: Sodium azide is a chemical and toxic compound. The aim of this study was to evaluate the effects of sodium azide on the viability of sperms and the serum levels of testosterone, LH and FSH in mature male laboratory small mice.
Materials and Methods:In this experimental study, 50 Balb/C male mice weighing 20-25g were divided into five groups (10 mice in each group). The animals were prescribed sodium azide for 60 days. Alternatively 5, 10 and 20 milligrams per kilogram of body weight of sodium azide were fed to the animals in the experimental groups 1, 2 and 3. After the completion of treatment, serum values of testosterone, LH and FSH were measured. The viability of sperms was also studied.
Results: The number of sperms in three experimental groups showed significant decrease compared to the control and sham groups (p<0.001). Serum value of testostrone hormone showed dose- dependently significant decrease compared to the control and sham groups. The serum level of FSH in the experimental groups did not show any significant change compared to the control and sham groups. But, the serum level of LH in experimental groups receiving sodium azide 10, 20 mg/kg increased significantly compared to the control and sham groups (p<0.01).
Conclusion: It seems sodium azide reduces serum level of testosterone and the number of sperms under the process of spermatogenesis in the animals.

---

Background: Polycystic ovarian syndrome (PCOS) is a disorder which causes disorder in the ovulation and infertility in women. This study was design to investigate the effects of alcoholic extract of white Marrubum vulgare plant on the hormonal parameters model of polycystic ovarian syndrome in the adult female rats.
Materials and methods: In this experimental study, 48 adult female rats from wistar race with approximate weight of 180 to 200 grams were evaluated. The rats were divided into 6 groups of 8 numbers each randomly. Control group, sham group, experimental group 1 received 500 mg/kg of oral extract for 21 days, experimental group 2 PCOS, experimental group 3 (PCOS+500 mg/kg) and experimental group 4 (PCOS +1000mg/kg) were fed extract for 21 days. On the 22nd day, blood samples were collected from all the groups for measuring serum levels of LH, FSH, testosterone, estradiol and progesterone hormones using RIA.
Results: LH hormone serum level in the group of “PCOS+1000mg/kg” showed a significant reduction compared to PCOS. FSH hormone level did not show any difference in any groups, compared to control group and PCOS. The level of estradiol hormone in the group of PCOS+500mg/kg, PCOS +1000mg/kg revealed a significant reduction, compared to PCOS. Testosterone hormone level in the group of PCOS+1000mg/kg showed a significant reduction in comparison to PCOS, and finally the level of progesterone in the group of PCOS +500mg/kg and PCOS +1000mg/kg exhibited a significant reduction, compared to PCOS.
Conclusion: The results indicate that alcoholic extract of white Marrubium Vulgare improves hormonal parameters in polycystic ovarian syndrome.