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Showing 3 results for Gourabi

Morteza Koruji, Mansoureh Movahedin, Seyed Javad Mowla, Hamid Gourabi,
Volume 5, Issue 4 (7-2007)
Abstract

Background: The basis of spermatogenesis is the spermatogonial stem cells (SSCs). The concentration of SSCs is very small. However, a system that supports the proliferation and maintenance of SSCs in vitro could be used to preserve and expand SSCs numbers as well as increase success in transplantation. It is a new avenue to restore spermatogenesis in azoospermia subjects.
Objective: Proliferation and enhancement of frozen-thawed SSCs numbers during in vitro culture.
Materials and Methods: Both Sertoli and spermatogonial cells were isolated from adult mouse testes. Frozen-thawed spermatogonial cells were cultured in two groups: simple culture (Experimental 1) and co culture with Sertoli cells (Experimental 2). Also, Fresh cells were considered as control groups: simple culture (control1) and co culture with Sertoli cells (control 2).Assay of the spermatogonial-cell-derived colonies was carried out at the end of each week.
Results: Results indicated that the viability rate of the frozen cells after thawing (68.4±10.2%) was influenced by cryopreservation procedure significantly (p ≤0.001). In addition, the number of the colonies and their diameters in the co-culture system with fresh cells (25.1±5.2 and 205.8±50 µm, respectively) were more than other groups and the differences were significant (p<0.001). Number of the colonies and their diameters in experimental 1(9.5±4.3 and 124±35.9 µm, respectively), experimental 2 (15.6±3.5 and 157.6±41.9µm, respectively) groups were better than control 1 group (3.1±2.2 and 87.5±30.6µm, respectively) and the differences were significant (p<0.001).
Conclusion: We demonstrated that co-culture system with Sertoli cells can increase in vitro colony formation of adult fresh and frozen-thawed spermatogonial cells in mouse.
 
 
Mohammad Reza Nowroozi, Keivan Radkhah, Alireza Ranjbaran, Saeed Reza Ghaffari, Mohammad Ali Sedighi Gilani, Hamid Gourabi,
Volume 8, Issue 4 (7-2010)
Abstract

Background: The sperm count and function may be affected by karyotype abnormalities or microdeletion in Y chromosome. These genetic abnormalities can probably transmit to the children.
Objective: In this study, we tried to determine the frequency of karyotype abnormalities and Y chromosome microdeletions in severe oligospermic or azoospermic men who fathered sons by ICSI.
Materials and Methods: This study comprised of fathers who had at least a son with ICSI due to severe oligospermia or azoospermia. General examinations were done and blood sample were obtained for karyotype and Y chromosome studies.
Results: The total of 60 fathers was evaluated along with their 70 sons. The mean duration of infertility was 8.7 years and the sons were 2.4 years in average at the time of examination. The mean age of neonates at the time of delivery was 33 weeks; 42.9% were delivered prematurely; and 40.5% of them were twins. 8.6% of the sons had hypospadiasis and 7.1% had UDT. Most of the side effects were due to prematurity. In total 6 of fathers had karyotype anomaly, meanwhile 4 of their sons had also karyotype anomaly. Only one son had karyotype anomaly without affected father. No case of Y chromosome microdeletion was found in the fathers.
Conclusion: Y chromosome microdeletion is not prevalent in fathers with successful ICSI and it is not necessary to be analyzed before ICSI performance. Karyotype anomaly may transmit to the sons. All together ICSI is reliable and safe. Most of the complications are the result of premature delivery.
Maryam Shahhoseini, Mahnaz Azad, Marjan Sabbaghian, Maryam Shafipour, Mohammad Reza Akhoond, Reza Salman Yazdi, Mohammad Ali Sadighi Gilani, Hamid Gourabi,
Volume 13, Issue 8 (9-2015)
Abstract

Background: Male infertility is a multifactorial disorder, which affects approximately 10% of couples at childbearing age with substantial clinical and social impact. Genetic factors are associated with the susceptibility to spermatogenic impairment in humans. Recently, SEPT12 is reported as a critical gene for spermatogenesis. This gene encodes a testis specific member of Septin proteins, a family of polymerizing GTP-binding proteins. SEPT12 in association with other Septins is an essential annulus component in mature sperm. So, it is hypothesized that genetic alterations of SEPT12 may be concerned in male infertility.
Objective: The objective of this research is exploration of new single nucleotide polymorphism G5508A in the SEPT12 gene association with idiopathic male infertility in Iranian men.
Materials and Methods: In this case control study, 67 infertile men and 100 normal controls were analyzed for genetic alterations in the active site coding region of SEPT12, using polymerase chain reaction sequencing technique. Fisher exact test was used for statistical analysis and p<0.05 was considered as statistically significant.
Results: Genotype analysis indicated that G5508A polymorphic SEPT12 alleles were distributed in three peaks of frequency in both control and diseases groups. Categorization of the alleles into (GG), (GA), (AA) types revealed a significant difference between infertile patients (azoospermic and asthenospermic) and normal controls (p=0.005).
Conclusion: According to our finding we suggest that G5508A polymorphism in SEPT12 gene can affect spermatogenesis in men, the opinion needs more investigation in different populations.

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