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Showing 7 results for Estrogen

Mohammad Reza Nasirzadeh , Alireza Nourazar, Mir Hadi Khayat Nouri, Leila Roshangar,
Volume 12, Issue 1 (4-2012)

  Background & Objectives: Following to estrogen depletion in postmenopausal womens, its cardioprotective effect decreases. Stroke usually occurs in women during the menopause years. Estrogen hormone therapy is still controversial. Epidemiological data suggest that phytoestrogens have a preventive effect on various estrogen-related diseases/symptoms such as menopausal symptoms, cardiovascular diseases. Some studies suggest that genistein as an important component of soy have cardioprotection effects but its role on inflammation and cardiomyocte injury remained to be elucidated. So, this study was goaled to investigate the cardioprotective effect of methanolic soy extract on heart tissue injures.

  Method: In this study 40 female rats were randomly allocated into 4 groups: 1) Control (intact animals), 2) sham surgery (without ovarictomy), 3) ovariectomized (ovx), and 4) treatment (ovx and soy gavage) group that received 60mg/kg per day soy extract in drinking water for 28days (4 weeks). At the end of experiments, the rat heart tissue was processed histologically and the sections were stained with hematoxylin and eosin to examine under light microscope. Statistical analysis was performed using the wilcoxon test.

  Results: The results showed that ovariectomy significantly increased inflammation and cardiomyocte injury and soy extract significantly promoted heart tissue recovery (p<0.05).

  Conclosions: This study indicated that oral administration of soy extract has a positive effect on attenuation of inflammation and myocyte injury in ovariectomized rat.

A Pourrahimghouroghchi, P Babaei, A Damirchi, B Soltanitehrani, S Ghorbanishirkoohi,
Volume 15, Issue 3 (9-2015)

Background & objectives: Obesity and visceral fat accumulation after menopause are associated with lipid profile changes, metabolic syndrome and c ardiovascular diseases. The aim of this study was to investigate the effect of 8-week aerobic - resistance training and estrogen replacement therapy on visceral fat and cardiovascular risk factors in ov ariectomized rats.

Methods: Fifty female Wistar rats were ov ariectomized and divided into 5 OVX groups (n=10 rats per group): Ovx+sedentary (Sedentary), aerobic - resistance training (Ovx+Exe), aerobic - resistance training+estrogen replacement therapy (Ovx+Exe+Est), estrogen replacement therapy (Ovx+Est) and vehicle group or sesame oil (Ovx+Oil). The exercise consisted of aerobic-resistance training (20 m/min, 3 days/week, 60 min/day, 10% slope, Load 3% body weight) 17b-estradiol valerate (30 �g/kg bw in 0.2 ml sesame oil) were injected subcutaneously three days a week during 8 week. The co-treatment group received both exercise and estradiol protocol as same as previous groups.

Results: After 8-week of interventions, visceral fat significantly reduced by Ovx+Exe and Ovx+Exe+Est compared to Sedentary rats (p<0.05), however no significant difference in body weight was observed. BMI significantly reduced in Ovx+Exe and Ovx+Exe+Est groups compared to Sedentary group. Also, BMI significantly reduced in Ovx+Est compared to Ovx+Oilgroup (p<0.05). Although this intervention changed lipid profiles, they were not statistically significant in neither of groups. Statistical comparisons between groups were performed usingone-way ANOVA test followed by Tukey&rsquos post-hoc test. The differences were considered significant at p<0.05.

Conclusion: Eight weeks aerobic-resistance training successfully decreases visceral fat and BMI.

Ebrahim Hosseini, Zahra Zia,
Volume 16, Issue 1 (4-2016)

Background & objectives: The teratogenic effects of electromagnetic radiation on different processes of growth caused many concerns related to the harmful effects of cell-phone radiation on human health. Therefore, the aim of this study was to investigate the effects of cell-phone radiation on estrogen, progesterone, FSH and LH hormones together with dynastic sexual cells of adult female offspring of pregnant rats affected by these radiations.

Methods: In this experimental study, 24 pregnant female rats divided into 3 groups including the control, sham and experimental groups were used. The control group received no radiation and the experimental group was exposed to cell-phone radiation at the beginning of pregnancy (4 hours daily for 14 days). The control group was exposed around turning-on cell-phone without conversation over the same period. After giving birth and after maturity, 10 female offsprings of different groups separated and after phlebotomizing, sexual hormones levels was measured and by separating the ovaries, ovarian follicles species were counted. The results analyzed using ANOVA and T tests. Differences in statistical analysis of data were considered significant at p<0.05.

Results: The results showed that the pregnant female exposure to cell-phone radiation caused significant increase in the size and weight of the ovaries and atresic follicles (p<0.05) without significant effect on the number of primary and secondary follicles, antral, graph, primordial, corpus luteum and sexual hormones.

Conclusion: Exposure to cell-phone radiations caused increase in the size, weight and atresic follicles of offspring’s ovaries in pregnant females

Parvin Babaei, Arsalsn Damirchi, Ameneh Pourrahim Ghouroughchi ,
Volume 16, Issue 2 (7-2016)

Background & objectives: Estrogen reduction after the menopause is associated with visceral adipose tissue accumulation and insulin resistance. Serum omentin-1 level is also decreased by abdominal obesity and insulin resistance. This study investigated the effect of estrogen on visceral fat, omentin-1 and insulin resistance in ovariectomized (OVX) rats.

Methods: Thirty 13-week-old female Wistar rats weighing180±5 gr were randomly matched on their body weight and divided into OVX (n=20) and sham-operated (SHAM; n=10) groups. OVX rats were subdivided into estrogen replacement therapy (Ovx+Est; n=10), and control (Ovx+sesame Oil; n=10) groups. The estrogen replacement therapy received 17b-estradiol (30µg/kg bw; in 0.2 ml sesame oil) three days a week, for eight weeks. Ovx+Oil received the same sesame oil subcutaneously as vehicle. All intra-abdominal fat depots were dissected out and weighed immediately. Omentin-1 concentration was measured by rat omentin ELISA kit and HOMA-IR was used to estimate the insulin resistance. Obtained data were analyzed by ANOVA and post hoc Tukey test.

Results: Visceral fat was decreased by 12.84% in Ovx+Est compared to Ovx+Oil group; but it wasn ́t significant. Whereas, body weight was significantly decreased by 7.87 % in Ovx+Est compared to Ovx+Oil; and it was significantly increased by 12.5% in Ovx+Oil compared to SHAM group. Omentin-1 level was significantly increased by 41% in Ovx+Est compared to Ovx+Oil group; whereas it was significantly decreased by 13.9% in Ovx+Oil compared to SHAM group. The levels of glucose, insulin and HOMA-IR were significantly decreased to 51.16%, 24.23% and 61.52%, respectively, in Ovx+Est group compared to the rats in Ovx+Oil group (p=0.0001).

Conclusion: 8-week estrogen reduces body weight and improves insulin resistance probably via increase in omentin-1.

Seyeddamoon Sadoughi ,
Volume 16, Issue 4 (1-2017)

Background & objectives: Diabetes mellitus is a metabolic disease that causes dysfunction of the endocrine glands and reproductive disorders. Due to the antioxidant and hypoglycemic properties of curcumin, the aim of this study was to determine the effects of curcumin on serum levels of estrogen, progesterone, LH and FSH in diabetic rats.

Methods: In this experimental study, 32 female Wistar rats were allocated into four equal groups. Control, non-treated diabetic and diabetic treated with curcumin (100 and 200 mg/kg, ip). The diabetes in non-treated diabetic and treated diabetic groups was induced using an intraperitoneal injection of alloxan. Estrous cycles were identical using sex hormones. Curcumin was intraperitoneally injected to treated diabetic groups for 25 days. DMSO was injected to the animals of control and non-treated diabetic groups as a vehicle. At the end of treatment, the serum levels of LH, FSH, estrogen and progesterone were measured by ELISA. Statistical analysis carried out using one way ANOVA and Tukey's post hoc test.

Results: Administration of curcumin with concentrations of 100 and 200 mg/kg significantly increased serum levels of LH, FSH, estrogen and progesterone, compared to non-treated diabetic group (p<0.05).

Conclusion: The results indicate significant effect of curcumin on serum levels of LH, FSH, estrogen and progesterone in diabetic rats. Therefore, curcumin could be effective in improving hormonal disorders in patients with diabetes.

Zahra Mirzakhani, Sayed Ebrahim Hosseini,
Volume 17, Issue 1 (4-2017)

Background & Objective: Nowadays, female infertility and abortion is considered one of the most important issues in the medical world. Due to high consumption of chamomile as a medicinal herb, this study aimed to investigate the effects of chamomile consumption on abortion, estrogen, progesterone, FSH, LH hormones and ovarian follicles in adult female rats.

Methods: In this experimental study, 80 adult female rats were divided to 2 categories in 5 groups of 8 pregnant and non-pregnant rats, including control groups, sham group and groups receiving intraperitoneal doses of 30, 60 and 120 mg/kg chamomile hydro-alcoholic extract. At the end of the day 16 of pregnancy, aborted fetuses in pregnant groups were counted, and in day 21, the number of follicles and corpora-lutea in non-pregnant groups was obtained by separating ovaries, and sexual hormone levels were measured after phlebotomizing the samples. The results were analyzed by SPSS software (Ver.18) using ANOVA and Tukey tests. Significant difference of data was set at p≤0.05.

Results: The results of this study showed that chamomile caused a significant increase in the number of aborted fetuses and follicle atresia and a significant decrease (p≤0.05) in serum level of estrogen, progesterone, FSH and LH hormones as well as the number of pre-antral follicle, antral follicles, graph and corpora-lutea.

Conclusion: The results showed chamomile extract decreased LH and FSH, thereby decreasing ovarian follicles, sexual hormones and aborted fetuses.

Shokouh Chegini, Mina Ramezani, Solmaz Shahla,
Volume 18, Issue 2 (7-2018)

Background & objectives: Artemisia absinthium (known as wormwood) is used as an antihelminthical, antimalarial, antiseptic and  anti-inflammatory agent, and is used for treatment of gastric pain in the traditional medicine. In the present study, we evaluated the effects of hydroalcoholic extract of A. absinthium on the ovary tissues and pituitary_gonadal axis of the adult female NMRI mice.
Methods: In this experimental study, intraperitoneally (IP) injections of hydroalcoholic extract of A. absinthium, were performed over 30 days on 50 mice with 50 (first group), 100 (second group), and 150 mg/kg.bw (third group) doses.  The sham group was received distilled water and control group received no injection. After 30 days of injections, the animals were dissected, and blood samples were collected by heart aspiration.  The levels of LH, FSH, estrogen and progesterone of serum were measured by ELISA method. Seven µm sections of ovary were prepared by a microtome and stained by H&E method. Data were analyzed by One-Way ANOVA and Tukey post- hoc test. The Significance level was set at p<0.05.       
Results: Our findings indicated a significant reduction (p<0.05) in the body weight in all experimental groups compared with sham and control groups. In parameters such as: large and small diameters of the ovary , number of primary, secondary, growing, graafian follicles, and corpus luteum, a significant decrease was observed in 100 and 150 mg/kg doses (p<0.05). In all experimental groups, no significant changes were observed in estradiol and progesterone levels. However, FSH and LH showed a significant decrease in 100 and 150 mg/kg doses (p<0.05).
Conclusion: Therefore, it can be concluded that Artemisia absinthium hydroalcohlic extract in high doses has damaging effects on the process of oogenesis, which may be due to α and β Thujoun, Alkaloid and Saponin constituents in this plant. 

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مجله دانشگاه علوم پزشکی اردبیل Journal of Ardabil University of Medical Sciences
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