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Showing 9 results for Momeni

Hamid Reza Momeni, Malek Soleimani Mehranjani, Mohammad Hosien Abnosi, Monireh Mahmoodi,
Volume 7, Issue 3 (7-2009)
Abstract

Background: para-nonylphenol (p-NP) is able to induce malformations in male reproductive system.
Objective: The aim of this study was to investigate the preventing role of vitamin E (Vit.E) on sperm parameters and reproductive hormones in developing rats.
Materials and Methods: Pregnant rats were divided into 4 groups: control p-NP Vit.E and p-NP+Vit.E. Treatments were performed on day 7 of gestation and continued during weaning. The male pups were then divided into the same groups as the mothers and were treated till 90 days of age. Finally body and left testis weight were recorded and left epididymis was cut in Ham’s F10. Released sperm were used to analyze number motility and viability of the sperm. Blood serum was used to assess follicle stimulating hormone (FSH) luteinizing hormone (LH) estrogen and testosterone.
Results: In p-NP-treated rats a significant decrease was found in body and testis weight sperm number and sperm motility compared to control and p-NP+Vit.E groups. A significant increase was also found in sperm viability in Vit.E group (83.3±7.6) compared to both p-NP (59.5±7.5) and control (66.3±9.7) groups. Rats treated with p-NP showed a significant decrease in FSH level and a significant increase in estrogen level. However testosterone and LH level remained constant. In p-NP+Vit.E group the change of estrogen level but not FSH was significantly reversed compared to p-NP group. Conclusion: Vit.E not only is able to compensate the toxic effects of p-NP on testis weight sperm number sperm motility and estrogen level but also increases sperm viability in developing rat.
Malek Soleimani Mehranjani, Ali Noorafshan, Ahmad Hamta, Hamid Reza Momeni, Mohammad Hussein Abnosi, Monireh Mahmoodi, Morteza Anvari, Maryam Hazaveh,
Volume 8, Issue 1 (7-2010)
Abstract

Background: Para-Nonylphenol (p-NP) is one of the environmental pollutants which cause reproductive system disorders.
Objective: The effects of vitamin E on ovary structure during its development in rats treated with p-NP.
Materials and Methods: 32 Wistar female rats after mating were divided into 4 groups; control vitamin E (100mg/kg/day) p-NP (250mg/kg/day) and p-NP + vitamin E. The rats were treated from the day 7 of pregnancy till 21st day of postnatal through sucking period. After weaning the female pups were treated by gavages for 120 days. The total volume of ovary number of follicles volume of oocyte follicular cells and their nuclei and the thickness of zona pellucida were estimated stereologically. The results were analyzed using one way ANOVA and p<0.05 was considered significant.
Results: The ovary weight, mean total volume of ovary and cortex, number of antral and graafian follicles and body weight were decreased significantly (p<0.05) in the p-NP treated rats compared to control and other groups, while the number of atretic follicles was increased significantly (p<0.05). A significant reduction (p<0.05) in volume of oocyte, follicular cells and their nuclei in antral and graafian follicles was found in p-NP group. In addition, treatment with only vitamin E showed an improving effect on folliculogenesis due to a highly significant increase (p<0.01) in the number of primordial follicles.
Conclusion: Vitamin E could compensate the adverse effects of p-NP on the ovary structure during its development.
Hamid Reza Momeni, Najmeh Eskandari,
Volume 10, Issue 3 (7-2012)
Abstract

Background: Arsenic as an environmental toxicant is able to exert malformations in male reproductive system by inducing oxidative stress. Vitamin E (Vit.E) is known as antioxidant vitamin.
Objective: The aim of this study was to investigate the harmful effects of sodium arsenite on sperm parameters and the antioxidant effects of Vit.E on sperm anomalies in sodium arsenite treated rats.
Materials and Methods: Adult male rats were divided into 4 groups: control, sodium arsenite (8 mg/kg/day), Vit.E (100 mg/kg/day) and sodium arsenite+Vit.E. Oral treatments were performed till 8 weeks. Body and left testis weight were recorded and then left caudal epididymis was cut in Hamchr('39')s F10. Released spermatozoa were used to analyze number, motility, viability and abnormalities of the sperm. Sperm chromatin quality was assessed by nuclear staining using acridine orange and aniline blue.
Results: Body and testis weight showed no significant change in 4 groups (p>0.05). A significant decrease in the number, motility, viability and normal sperm morphology was found in sodium arsenite-treated rats compared to the control (p<0.001). Sodium arsenite had no effect on sperm DNA integrity and histon-protamine replacement (p>0.05). In sodium arsenite+Vit.E group, Vit.E could significantly compensate the harmful effects of sodium arsenite on sperm number, motility, viability and morphology compared to sodium arsenite group. In addition, sperm viability and motility was significantly increased in rats treated with Vit.E alone compared to the control and sodium arsenite+Vit.E group.
Conclusion: Vitamin E could compensate the adverse effects of sodium arsenite on sperm parameters in adult rats.

Farzaneh Eskandari, Hamid Reza Momeni,
Volume 14, Issue 1 (1-2016)
Abstract

Background: Exposure to arsenic is associated with impairment of male reproductive function by inducing oxidative stress. Silymarin with an antioxidant property scavenges free radicals.
Objective: The aim of this study was to investigate if silymarin can prevent the adverse effects of sodium arsenite on ram sperm plasma membrane and acrosome integrity.
Materials and Methods: Ram epidydimal spermatozoa were divided into five groups: spermatozoa at 0 hr, spermatozoa at 180 min (control), spermatozoa treated with silymarin (20 μM) + sodium arsenite (10 μM) for 180 min, spermatozoa treated with sodium arsenite (10 μM) for 180 min and spermatozoa treated with silymarin (20 μM) for 180 min. Double staining of Hoechst and propidium iodide was performed to evaluate sperm plasma membrane integrity, whereas comassie brilliant blue staining was used to assess acrosome integrity.
Results: Plasma membrane (p< 0.001) and acrosome integrity (p< 0.05) of the spermatozoa were significantly reduced in sodium arsenite group compared to the control. In silymarin + sodium arsenite group, silymarin was able to significantly (p< 0.001) ameliorate the adverse effects of sodium arsenite on these sperm parameters compared to sodium arsenite group. The incubation of sperm for 180 min (control group) showed a significant (p< 0.001) decrease in acrosome integrity compared to the spermatozoa at 0 hour. The application of silymarin alone for 180 min could also significantly (p< 0.05) increase sperm acrosome integrity compared to the control.
Conclusion: Silymarin as a potent antioxidant could compensate the adverse effects of sodium arsenite on the ram sperm plasma membrane and acrosome integrity.
Farzaneh Eskandari, Hamid Reza Momeni,
Volume 14, Issue 6 (6-2016)
Abstract

Background: Sodium arsenite can impair male reproductive function by inducing oxidative stress. Silymarin is known as a potent antioxidant.
Objective: This study was performed to investigate if silymarin can prevent the adverse effect of sodium arsenite on ram sperm viability, motility and mitochondrial membrane potential.
Materials and Methods: Epidydimal spermatozoa obtained from ram were divided into five groups: 1) Spermatozoa at 0 hr, 2) spermatozoa at 180 min (control), 3) spermatozoa treated with sodium arsenite (10 μM) for 180 min, 4) spermatozoa treated with silymarin (20 μM) + sodium arsenite (10 μM) for 180 min and 5) spermatozoa treated with silymarin (20 μM) for 180 min. MTT assay and Rhodamine 123 staining were used to assess sperm viability and mitochondrial membrane potential respectively. Sperm motility was performed according to World Health Organization (WHO) guidelines.
Results: Viability (p<0.01), nonprogressive motility (p<0.001) and intact mitochondrial membrane potential (p<0.001) of the spermatozoa were significantly decreased in sodium arsenite treated group compared to control group. In silymarin + sodium arsenite group, silymarin could significantly reverse the adverse effect of sodium arsenite on these sperm parameters compared to sodium arsenite group (p<0.001). In addition, the application of silymarin alone for 180 minutes could significantly increase progressively motile sperm (p<0.001) and decrease non motile sperm (p<0.01) compared to the control.
Conclusion: Silymarin could compensate the adverse effect of sodium arsenite on viability, nonprogressive motility and mitochondrial membrane potential of ram sperm.
Zahra Momeni, Ali Dehghani, Hossein Fallahzadeh, Moslem Koohgardi, Maryam Dafei, Masoud Mohammadi,
Volume 17, Issue 11 (November 2019)
Abstract

Background: Cardiovascular diseases could be preventable; as a result, understanding the risk factors was regarded as the major priority for healthcare providers.
Objective: The main objective of this research was to achieve a deeper insight into the effect of long-term use of low-dose oral contraceptive pills (OCP) on the risk factors of cardiovascular diseases.
Materials and Methods: This research was a retrospective cohort conducted (historical and prospectively) conducted on 100 women with normal menstrual cycles aged 15 to 35 yr, who were referred to the healthcare centers in Yazd, Iran. The participants were categorized into two groups: The OCP group was consuming the pills for 0-3, 4-23, and 24-36 months, and the non-OCP group. Participants were followed up for a minimum of 3 months and a maximum of six months
Results: The highest level of low-density lipoprotein (LDL), homocysteine, cholesterol, triglyceride levels, and systolic blood pressure was observed in the OCP group in the duration of 24 to 36 months. The Tukey’s test demonstrated that there were comprehensible differences in the LDL (p = 0.01), cholesterol (p = 0.01), triglyceride (p < 0.001), and homocysteine levels (p < 0.001), also systolic blood pressure (p = 0.04).
Conclusion: It was realized that the long-term consumption of low-dose OCP can augment the incidence of some risk factors (systolic blood pressure, homocysteine levels, cholesterol, LDL-c, and triglyceride) and lead to developing cardiovascular diseases amongst the healthy women.
Hamid Reza Momeni, Mohammad Hussein Abnosi, Najmeh Eskandari,
Volume 18, Issue 11 (November 2020)
Abstract

Background: 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) assay which evaluates cellular mitochondrial activity is widely used for the assessment of cell proliferation and viability.
Objective: This study was performed to assess human sperm viability using MTT assay.
Materials and Methods: In this laboratory study, human-ejaculated semen samples (n = 56 from different donors) were used. The sperm viability was determined using quantitative MTT assay and the sperm motility was assessed according to World Health Organization guidelines. Sperm viability and the correlation between sperm viability and motility were analyzed.
Results: Data revealed a marked positive correlation between MTT reduction rate and the percentage of viable spermatozoa. The Pearsonchr('39')s correlation coefficients also showed a significant correlation between sperm viability and motility.
Conclusion: MTT assay which is based on mitochondrial functionality is a reliable method for evaluating human sperm viability and could be used as a diagnostic test for predicting sperm fertilization ability in clinical settings.
Soheil Hassanipour, Saeed Bagheri Faradonbeh, Khalil Momeni, Zahra Heidarifard, Mohammad-Javad Khosousi, Leila Khosousi, Hosein Ameri, Morteza Arab-Zozani,
Volume 18, Issue 12 (December 2020)
Abstract

Background: Coronavirus Disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 appeared in December 2019 in Wuhan, China.
Objective: To investigate the clinical manifestations including signs and symptoms, laboratory results, and perinatal outcomes in pregnant women with COVID-19.
Materials and Methods: Scholarly databases such as PubMed via LitCovid hub, Embase, Scopus, Web of sciences, and Google scholar were searched on April 7, 2020. Meta-analysis was performed via comprehensive meta-analysis software using the Mantel-Haenszel method. The event rate with 95% CI was calculated for each variable.
Results: Ten studies were selected. The pooled prevalence for fever, post-partum fever, cough, myalgia, fatigue, dyspnea, sore throat, and diarrhea were 66.8%, 37.1%, 35%, 24.6 %, 14.9%, 14.6%, 11.5%, and 7.6%, respectively. Laboratory test results were 49.8% for lymphopenia, 47.7% for leukocytosis, 83.7% for elevated neutrophil ratio, 57% for elevated C-reactive protein, and 71.4% for decreased lymphocyte ratio. The rate of cesarean section for delivery in all cases was 84%. Of the newborns of the corona-positive mothers, only one had a positive test result. Also, there was only one death due to a decreased lymphocyte ratio.
Conclusion: Fever was the most common sign and symptom in pregnant women with COVID-19. Among the laboratory tests, the highest amount was related to elevated neutrophil ratio. It seems that due to the differences between pregnant women and the general population, special measures should be considered to treat these patients.
 

Reza Najafipour, Abdolmabood Momeni, Farideh Yousefipour, Shaghayegh Mousavi, Sahar Moghbelinejad,
Volume 19, Issue 1 (January 2021)
Abstract

Background: Post-transcriptional microRNAs (miRNAs) have a impotrant pattern in the spermatogenesis process.
Objective: Study of the expression and methylation of hsa-miR-449 family in sperm samples of infertile men.
Materials and Methods: In this case-control study, we recruited 74 infertile men (with asthenozoospermia, teratozoospermia, asthenoteratozoospermia, and oligoasthenoteratozoospermia) and 30 control samles. Methylation-specific PCR (MSP) method was used for methylation evaluation of hsa-miR-449 a, b, c promoter. By Real time PCR (qRT-PCR) method,we showed downregulation of hsa-miR-449 a, b, c in the sperm samples of infertile men and compared it to their fertile counterparts.
Results: There was significant underexperssion, in hsa-miR-449-b in oligoasthenoteratospermic samples (p = 0.0001, F = 2.9). About the methylation pattern, infertile men showed high frequency of methylation in the promoter of hsa-miR-449 a, b, c in comparison to controls (60.8% vs 23.3%), the highest amount of methylation was observed in oligoasthenoteratospermia samples (81.2%).
Conclusion: In this study, low expression and high methylation of hsa-miR-449-b were observed in infertile men in compared to control samples, which can be one of the causes of defective spermatogenesis.


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