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Showing 4 results for Hekmatimoghaddam

Seyed Khalil Foruzan-Nia, Mohammad Hassan Abdollahi, Seyed Hossein Hekmatimoghaddam, Seyedeh Mahdiyeh Namayandeh, Mohammad Hadi Mortazavi,
Volume 9, Issue 2 (7-2011)
Abstract

Background: Successful rehabilitation of cardiac surgery patients should include consideration of their sexual activity, but there is paucity of data regarding this matter. Objective: This study determined the incidence and type of sexual dysfunction in our patients. Materials and Methods: Two hundred-seventy nine men with age under 70 years old who had coronary artery bypass graft (CABG), valvular, or other types of cardiac surgery from Dec. 2006 until Dec. 2007 were enrolled in this descriptive-analytical study. They were interviewed before and 12 weeks after the operation in regard to the impact of surgery on their sexuality. The statistical methods used included analysis of variance, Kappa test, and chi-square analysis. Results: The mean age of the patients was 55.7 ± 10.66 (25-69) years. The incidence of sexual dysfunction was 20.1% before, and76.4%, 12 weeks after the operation. P-valueas tested by Kappa test was 0.0001, which means that cardiac surgery had adverse effect on sexual activity of the patients. Types of sexual dysfunction were impotence, premature ejaculation, and decreased or loss of libido in 6.5%, 4.3% and 9.3%, respectively before operation, and 34.8%, 21.5% and 20.1%, respectively 12 weeks after the operation. Concurrence of more than one dysfunction was not reported. Conclusion: Sexual dysfunction is common after cardiac surgery, and sexual counseling is still not being addressed adequately. The role and responsibility of the physician and the rehabilitation nurse becomes evident, together with the need for the patient’s partner to participate in counseling Article
Seyed Khalil Forouzannia, Mohammad Hassan Abdollahi, Seyedhossein Hekmatimoghaddam, Sadegh Ali Hassan Sayegh,
Volume 10, Issue 5 (10-2012)
Abstract

Background: Sexual dysfunction is one of the most common problems in men after coronary artery bypass graft (CABG). Etiology of sexual dysfunction in these patients may be psychological or organic due to hormonal changes. Objective: The purpose was to evaluate the incidence and type of sexual dysfunction and changes in serum concentration of sex hormones in male patients undergoing on-pump CABG. Materials and Methods: In this before and after study we enrolled 40 men aged less than 70 years who were candidate for on-pump CABG. Interviews were done by a physician before and 12 weeks after the operation in regard to the impact of surgery on their sexual activities. The serum levels of 6 sex hormones were also determined. The statistical tests used for data analysis included analysis of variance, McNemar's test and chi-square analysis. Results: The mean±SD age of the patients was 51.27±7.86 years. Incidence of sexual dysfunction was 22.5% (9 cases) before and 47.7% (19 cases) after operation. Types of sexual dysfunction were premature ejaculation (5% before, 2.5% after), impotence (7.5% before, 12.5% after) and loss of libido (10% before, 32% after). The level of sex hormones were generally decreased after operation but it was statistically significant only for estrogen (p-value=0.02). Conclusion: Sexual dysfunction and reduction in serum level of sex hormones are common in patients before on-pump CABG and mostly get worse after surgery. Complementary studies are suggested for prevention and treatment of sexual dysfunction.
Abolfazl Barkhordari, Seyedhossein Hekmatimoghaddam, Ali Jebali, Mohammad Ali Khalili, Alireza Talebi, Marzieh Noorani,
Volume 11, Issue 9 (12-2013)
Abstract

Background: The extensive use of different nanoparticles has raised great concerns about their occupational and biological safety.
Objective: The aim of this study was to evaluate the cytotoxic effect of zinc oxide nanoparticles (ZnO NPs) on viability of spermatozoa.
Materials and Methods: Semen samples were obtained from 15 healthy persons, and were analyzed using WHO guidelines. Each semen sample was separately incubated with different concentrations of ZnO NPs (10, 100, 500, and 1000 μg/mL) at 37PoPC for 45, 90, and 180 minutes. Then, the cell death percentage of spermatozoa was measured by MTT assay. Mann-Whitney test was used for comparison of different times and concentrations.
Results: The maximum cell death percentage was 20.8%, 21.2%, and 33.2% after 45, 90, and 180 minutes, respectively. In case of concentration, the highest concentration (1000 μg/mL) of ZnO NPs led to the highest toxicity for all incubation times. Statistically, there were significant differences in cell viability after 180 minutes vs. 45 and 90 minutes.
Conclusion: This study indicated that cytotoxicity of ZnO NPs is dose and time dependent.
Mona Yadegar, Seyed Hossein Hekmatimoghaddam, Saeide Nezami Saridar, Ali Jebali,
Volume 13, Issue 3 (3-2015)
Abstract

Background: In spermatogenesis, spermatogonial cells differentiate to the haploid gametes. It has been shown that spermatogenesis can be done at in vitro condition. In vitro spermatogenesis may provide an open window to treat male infertility.
Objective: The aim of this study was to evaluate the effects of a novel scaffold containing human serum albumin (HSA)/tri calcium phosphate nanoparticles (TCP NPs) on the mouse spermatogonial cell line (SCL).
Materials and Methods: First, TCP NPs were synthesized by reaction of calcium nitrate and diammonium phosphate at pH 13. Then, serial concentrations of TCP NPs were separately added to 500 mg/mL HSA, and incubated in the 100oC water for 30 min. In the next step, each scaffold was cut (2×2mm), placed into sterile well of microplate, and then incubated for 1, 2, and 3 days at 37oC with mouse SCL. After incubation, the cytotoxicity of the scaffolds was evaluated by different tests including 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyl-tetrazolium bromide (MTT) assay, lactate dehydrogenase (LDH) assay, vital staining, and cell counting. On the other hand, the release of TCP NPs and HSA from the scaffolds was measured.
Results: Based on microscopic observation, the size of cavities for all scaffolds was near 200-500 μm, and the size of TCP NPs was near 50-100 nm. All toxicity tests showed that the increase of TCP concentration in the scaffold did not affect mouse SCL. It means that the percentage of cell viability, LDH release, vital cells, and cell quantity was 85%, 105%, 90%, and 110%, respectively. But, the increase of incubation time led to increase of LDH release (up to 115%) and cell count (up to 115%). Also, little decrease of cell viability and vital cells was seen when incubation time was increased. Here, no release of TCP NPs and HSA was seen after increase of TCP concentration and incubation time.
Conclusion: It can be concluded that the increase of TCP concentration in HSA/ TCP NPs scaffold does not lead to cytotoxicity. On the other hand, the increase of incubation time leads to increase of mouse SCL cell death. In this study, it was found that TCP NPs and HSA could not release from the scaffolds. In future, both proliferation and differentiation of mouse SCL on HSA/TCP NPs scaffold must be checked over more wide incubation times.

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