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Showing 3 results for Tajbakhsh
Association of Mdr1 Gene C1236t Polymorphism with Idiopathic Males’ Infertility in Guilan Population
F Tajbakhsh, F Mashayekhi, A Hamidi Madani, Mh Bahadori,
Volume 23, Issue 1 (Mar-Apr 2015)
Abstract
Introduction: Infertility is defined as the inability of the couples to achieve pregnancy after 12 months of unprotected intercourse. P-glycoprotein (P-gp) also known as multidrug resistance protein 1 (MDR1) is an important protein of the cell membrane that pumps many foreign substances out of cells and has a protective role in sensitive tissues such as testis. MDR1 gene is located on q21.1 of chromosome 7. Hence, this study aimed to assess the association of MDR1 polymorphism and idiopathic male infertility. Methods: In this study (case- control), DNA was extracted from blood leukocytes of 136 male patients with idiopathic infertility as well as 130 healthy men. Genotypes were determined by using PCR-RFLP technique and EcoO109I enzyme. Results: The genotypes frequencies of CC, CT and TT in patient group were 19.12%, 39.70% and 41.18%, respectively, and the genotype frequencies of CC, CT and TT in control group were 12.30%, 61.54% and 26.16%, respectively. Conclusion: The study findings revealed that a significant association was found between MDR1 polymorphism and idiopathic infertility (P= 0.001). Therefore, the results suggest that CT heterozygous genotype has a protective effect on male fertility (P= 0.01, OR= 0.41 95%CI: 0.23- 0.84). However, to achieve more accurate results, it is necessary to examine a larger target population.
Prevalence of Extended-Spectrum Beta-Lactamases Enzymes in Enterobacter Aerogenes Isolated from Urinary Tract Infections in Shahrekord City
Shima Shantiaee, Elahe Tajbakhsh, Hasan Momtaz,
Volume 30, Issue 5 (8-2022)
Abstract
Introduction: Enterobacteriaceae produce the Extended-Spectrum Beta-Lactamases which is considered as an important resistant mechanism of beta-lactam antibiotics. The resistance to beta-lactam antibiotics is the main problem in the bacterial infections therapy. The prevalence of these enzymes changes in different geographical areas and with time. The present study aims to explore the frequency of the extended-spectrum blaSHV, blaCTX-M, blaTEM, in Enterobacter aerogenes isolated from urinary tract infections in Shahrekord City; the mentioned genes were investigated from the phenotypic and genotypic point of view.
Methods: In this cross-sectional descriptive study, antibacterial susceptibility patterns of 50 isolates of Enterobacter aerogenes to Cefotaxim, Ceftazidim, Cefterixon and cephalotin were tested using disk diffusion (Kirby-Buer) method. In addition, confirmatory tests for detecting ESBLs phenotypes were performed using Ceftazidim-clavulanic acid and Cefotaxim- clavulanic acid combination disks. Then, the presence of blaSHV, blaCTX-M, blaTEM, genes in the broad-spectrum beta-lactamase producing strains was assessed in the presence of specific primers.
Results: Out of 50 isolates of Enterobacter aerogenesis investigated in this study, 32 isolates (64%) were identified to produce broad-spectrum β-lactamases in the phenotypic study of ESBLS, and the prevalence of blaCTX-M, blaTEM and blaSHV was reported as 30%, 20% and 14%, respectively. In the statistical analysis, a statistically significant correlation was observed between resistance to the antibiotic ceftriaxone and the blaCTX-M, gene (p<0.05).
Conclusion: The present study suggests that ESBL producing Enterobacter aerogenes isolates have a high prevalence. The increase in the number of these species is often caused due to the irrational prescription of antibiotics, which requires the use of new antimicrobial agents and limiting the unnecessary use of antimicrobial agents and increasing the use of infection control tools.
 

Isolation of Viable Follicles from Cryopreserved Human Ovarian Tissue
Farnaz Tajbakhsh, Somayeh Tavana, Mohammad Kazemi Ashtiani, Naeimeh Sadat Abtahi, Leila Sadat Tahaei, Ashraf Moini, Rouhollah Fathi,
Volume 32, Issue 10 (1-2025)
Abstract
Introduction: Ovarian tissue freezing is the most effective method to maintain fertility for immature girls and women diagnosed with cancer. Nonetheless, because of the chance that malignant cells might reappearing following tissue transplantation, it is crucial to isolate the follicles from the frozen-thawed ovarian tissue of these individuals and employ them in the process of in vitro maturation process or artificial ovarian framework. This study aimed to assess the application of neutral red (NR) vital dye alongside collagenase IA for effectively isolating viable follicles from the vitrified human ovarian tissue samples.
Methods: Two categories existed: the category with NR and the group without NR. Chopped (0.5×0.5 mm) strips of vitrified-warmed ovarian tissue from 10 transsexual individuals were placed into two falcon tubes with HTCM and Collagenase IA (1mg/ml). Neutral red (NR) was introduced to one of the falcons. Follicles were then isolated mechanically. The morphology, size, and viability of the follicles were assessed. The condition of the follicles was evaluated using fluorescent staining methods involving Calcein-AM and Ethidium homodimer-I. The t-test method was used to evaluate the data.
Results: The number of isolated follicles with Neutral Red (46.50±25/02) exceeded those without NR (6.6±5.58; P < 0/0001). Additionally, according to the morphological studies, a majority of the isolated follicles from the transsexual ovarian cortex were primordial (77.4%), and primary (21.12%) follicles, with only a small number of secondary follicles (1.4%) identified in these tissues. Live/dead staining verified the viability of isolated follicles by displaying a green hue.
Conclusion: The finding indicates that combining collagenase I with the vital dye Neutral red significantly facilitates the of follicles from dense human ovarian tissue.
 

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