Search published articles


Showing 10 results for Subject: Molecular Sciences

Soraya Larki, Dr Masoud Maleki,
Volume 6, Issue 1 (6-2018)
Abstract

Background and objectives: Endometrial tissue growth and its activity outside the uterus cause endometriosis. It has been suggested that various epigenetic deviations play a major role in the pathogenesis of endometriosis. Steroidogenic factor 1 (SF-1; NR5A1) is an essential transcription factor for estrogen biosynthesis in endometrial cells. The expression of SF-1 in endometriosis and lack of expression in normal endometrium is primarily determined by its promoter methylation. Here, we aimed to compare the methylation status of the SF-1 gene promoter region in women with endometriosis in comparison to healthy subjects.
Methods: In the present case–control study, DNA was extracted from 25 endometrial tissue samples from women with endometriosis and 5 normal post-hysterectomy endometrium tissues which were collected from Tabriz hospitals including Vali-e-Asr, Taleghani, 29 Bahman and Shams in 2016. The obtained DNA samples were subjected to Bisulfite-treatment. Finally, the status of SF-1gene promoter methylation was evaluated by methylation specific PCR method. Statistical analyses including descriptive and inferential statistics were conducted using tables, bar charts by statistical software SPSS version 20 and independence test.
Results: The methylation status of SF-1 gene promoter was decreased significantly in endometriosis samples (P<0.05).  
Conclusion: SF-1 gene promoter hypomethylation could increase the relative expression of SF-1 gene in endometriosis which may lead to the development or progression of the disease.
Golnesa Dadkhah, Hadi Bazzazi, Yaghoub Yazdani,
Volume 6, Issue 3 (11-2018)
Abstract

Background and objectives: Rheumatoid arthritis (RA) is a complex and systemic inflammatory disease in which the immune response is disturbed. Single nucleotide polymorphisms (SNPs) in the promoter regions of regulatory cytokines including interleukin-10 (IL-10) may lead to exacerbated immune response and increased risk of RA. Here, we aimed to assess the association of IL-10 -1082 (G/A) (rs1800896) promoter polymorphism with the susceptibility to RA in a population in northeast of Iran.
Methods: A total of 130 RA patients and 128 sex- and age- matched healthy donors were enrolled. The polymerase chain reaction (PCR) was used to amplify the polymorphic regions and restriction fragment length polymorphism (RFLP) technique was applied to detect rs1800896. SPSS 22.0 software was used to analyze data statistically.
Results: Our findings revealed that G allele was significantly associated with the increased risk of RA [OR = 1.88, 95% CI (1.32–2.66), P-value = 0.0001] in patients. Setting AA genotype as the reference, the AG [OR = 2.93, 95% CI (1.68–5.12), P-value = 0.0001] and GG [OR = 5.73, 95% CI (2.30–14.23), P-value = 0.0001] genotypes were significantly associated with RA susceptibility.
Conclusion: The present study suggests that the IL-10 -1082 (G/A) genetic variants are associated with RA susceptibility, but not with the disease activity. While this is the first time to report such an association in a population in northeast of Iran, further studies are needed to confirm these findings.
Sahar Ghovanjzadeh, Hadi Bazzazi, Yaghoub Yazdani,
Volume 6, Issue 3 (11-2018)
Abstract

Background and objectives: Rheumatoid arthritis (RA) is an autoimmune disease with a complex genetic background. The protein tyrosine phosphatase non-receptor type 22 (PTPN22) is a lymphoid specific protein tyrosine phosphatase which is involved in negative regulation of T cell response. Several studies have assessed the association between PTPN22 single nucleotide polymorphisms (SNPs) with RA susceptibility. Here, we aimed to assess the association of PTPN22 (1858 C>T) variant with the susceptibility to RA in northeast of Iran.
Methods: A total of 127 RA patients and 119 age- and sex- matched healthy donors were enrolled. The polymerase chain reaction (PCR) followed by restriction fragment length polymorphism (RFLP) technique (PCR-RFLP) was applied to detect PTPN22 (1858 C>T) SNP. SPSS 22.0 software was used to analyze data using relevant statistical tests.
Results: Comparison of allele and genotype frequencies of PTPN22 (1858 C>T) SNP in RA patients and healthy donors revealed no significant association with RA susceptibility.
Conclusion: The present study suggests that the PTPN22 (1858 C>T) genetic variants are not associated with RA susceptibility and disease activity. While this is the first report from northeast of Iran, further studies are needed to confirm these findings
Mehdi Agha Gholizadeh, Afsaneh Bazgir, Faezeh Sarvar, Zahra Pakzad,
Volume 7, Issue 1 (3-2019)
Abstract

Background: Disorders of sex development (DSD) are a medical condition that affects the normal process of sexual  Various of the genes needed for gonad development have been identified by investigation of patients with disorders sex development (DSD).Phenotypes of patients with 46,XY DSD range from atonalism in female phenotype with complete external  genitalia to male phenotype with testicular regression. Individuals with 46,XYagonadiam show a wide range of clinical features and in some cases, there is not a clear diagnosis for this patients. We presented the clinical and molecular study a patient with 46,XY female without gonadal tissue.
Case presentation: A 27-year-old female was attended to our center because of primary amenorrhea. Ultrasonography did not show gonadal tissue including Mullerian structures, uterus, and Wolffian structures. Also, the patient had not streak gonad. We performed cytogenetic study and molecular analysis, including automated sequencing of the entire coding region of SRY gene, in the patient with agonadism. Our result showed 46,XY karyotype. Also, we noticed that molecular mutations in SRY are not identified as a cause of DSD female without a gonadal tissue. Laboratory examination showed that this case is a unique patient with 46,XYfemale agonadism that has no association with previously described.
Conclusions: The present case was a patient with 46, XYagonadism without hormonal or kidney defect and we did not detect mutation in SRY gene. To our knowledge, this case is a unique patient with 46,XYagonadism that has no association with previously described. So this case would be helpful for clinicians to assess 46,XY female patients without gonadal tissue.
 
Saad Ghaderi, Masoud Maleki,
Volume 7, Issue 2 (7-2019)
Abstract

Infertility is defind as the inability to conceive after one year of regular unprotected sexual intercourse by a couple. Female infertility can have different causes that all factors can in somehow be influenced by genetic factors. Studies have shown that epigenetic changes play an important role in fetal development, oogenesis and spermatogenesis. During the growth of oocyte, follicular cells make a multilayer coating of granulosa cells. Granulosa cells are affected by gonadotropin hormones. The CYP11A1 gene is one of the genes involved in the production of steroid hormones in luteinized granulosa cells. The CYP11A1 enzyme in the progesterone prodaction path way leads to the conversion of cholesterol to pregnenolon. Progesterone is an important steroid hormone that plays an important role in fertility and pregnancy. Histone modifications help to express the CYP11A1 gene. Trimethylation of Lysine 4 on histone H3 (H3K4me3) works to active transcription in the CYP11A1 promoterIn the present study, the level of methylation H3K4me3 in regulation area of CYP11A1 gene in granulosa cells collected from the women with infertility problem and also from fertile women giving oocyte was investigated in Tabriz Jihad Daneshgahi infertilization center. To do this, the Chromatin Immunoprecipitation and then Real-Time PCR were used to investigate the level of methylation.According to the results of the present study, the level of methylation H3K4me3 in the regulating area of CYP11A1 gene in the given infertile people doesn’t show significant difference in comparision with control group and no significant relationship was observed between methylation of histone in CYP11A1 promoter and number of follicles and oocyte.It is suggested that epigenetic changes in regulating area of CYP11A1 gene are not involved in the number of follicle and oocytes.    

 
Telnaz Bahrami, Masoud Maleki,
Volume 7, Issue 2 (7-2019)
Abstract

Infertility is a disorder of the reproductive system, which often occurs after one year of regular unprotected intercourse with the aim of pregnancy. Several physical functions require the synthesis of steroid hormones, in which gonadal steroids (estrogen and progesterone) play a pivotal role in reproduction. Follicular growth and ovulation depend on the proliferation and differentiation of the granulosa and theca cells, which are possible in the steroid pathway after stimulation with the ovarian gonadotropins and cytokines. Steroidization is initiated with the transfer of cholesterol by the StAR protein to the mitochondrial membrane of the steroid cells, which is followed by a cascade of steroid hormones. Recent studies have highlighted the impact of epigenetic mechanisms on reproduction, emphasizing the importance of these changes in the early and secondary stages of gametogenesis. To determine the causes of infertility, it is essential to recognize the altered epigenetic modifications of the relevant gene and its mechanisms. In the present study, the H3K4me3 methylation level was evaluated in the StAR gene regulatory region in the granulosa cells collected from the fertile and infertile women referring to Tabriz Jihad Infertility Centerin Tabriz, Iran using ChIP-qPCR. According to the results, the H3K4me3 methylation level increased in the StAR gene regulatory region in the fertile women compared to the infertile women. In addition, a significant correlation was observed between the follicle and egg rates at the MII stage and the level of this methylation.
Marie Saghaeian Jazi,
Volume 7, Issue 3 (9-2019)
Abstract

Summary:
SOX2 overlapping transcript (SOX2OT) is a long non-coding RNA associated with cancer pathogenesis. It contributes to a variety of cellular functions and recent evidence propounds its association with autophagy process. It has been showed that SOX2OT can regulate the expression of different autophagy associated factors in human cells with different mechanisms, however more remains to be investigated.
Mohammad Mousaei, Mohammad Ali Azarbayjani, Maghsoud Peeri, Seyed Ali Hosseini,
Volume 7, Issue 4 (12-2019)
Abstract

Background and objectives: Controlling nutrition and exercise can be two important strategies in controlling tendon health. It has been reported that resistance training and palm pollen separately can improve Scleraxis (Scx) in tendon tissue; so present study aimed to investigate the interactive effects of resistance training with ethanolic extract of palm pollen on Scx protein and gene expression levels in the tendon tissue of male adult rats.
Methods: In this experimental study 30 male adult rats divided into 6 groups of 6 rats including: 1) sham, 2) training, 3) palm pollen, 4) testosterone, 5) training + palm pollen, and 6) training + testosterone. During 4 weeks, groups 2, 5, and 6 performed resistance trainings for five sessions per week; groups 3 and 5 received 100 mg/kg palm pollen for five days per week via gavage and groups 4 and 6 received 2 mg/kg testosterone propionate peritoneally. Scx protein and gene expression levels were measured in tendon tissue by Western blot and real-time PCR methods respectively. Shapiro- Wilk, one way ANOVA with Tukey’s post- hoc tests were used to analyze the findings (P≤0.05).
Results: Training significantly increased Scx protein levels (P=0.005); palm pollen significantly increased Scx gene expression levels (P=0.001); training + palm pollen significantly increased Scx protein and gene expression levels (P=0.001) also training + palm pollen had more favorable effect on increase of Scx protein and gene expression levels compared to training and palm pollen alone (P=0.001).
Conclusion: It seems that resistance training simultaneously with palm pollen administration can have a more favorable effect than each one alone on improving Scx protein and gene expression levels in tendon tissue of male adult rats.
Abdol Kheder Keshtvarz, Maghsoud Peeri, Mohammad Ali Azarbayjani, Seyed Ali Hosseini,
Volume 7, Issue 4 (12-2019)
Abstract

Background and objective: Exercise and nutrition are two factors influencing the improvement of inflammatory markers in patients with colon cancer. Aim of present study was to investigate the effect of aerobic training (AT) with Purslane (Portulaca Oleracea) Seed (PS) on toll like receptor 2 (TLR-2) and TLR-4 in colon tumor tissue of rats with colon cancer.
Methods: In this experimental study 30 adults rats were divided into five groups of six rats including: 1) healthy control, 2) control, 3) training, 4) PS, and 5) training + PS. Colon cancer induced by intra-peritoneal injection of azoxymethane in groups 2- 5. During eight weeks, groups 3 and 5 performed AT for five sessions per week also groups 4 and 5 received 75 mg/kg PS intra-peritoneally. TLR2 and TLR4 protein levels were measured by ELISA method. For review the normal distribution and data Shapiro- wilk was used and for statistical analysis of data one way ANOVA with Tukey’s post- hoc tests were used (P≤0.05).
Results: Training had not significant effect on TLR-2 (P=0.91) and TLR-4 (P=0.95); PS and training + PS significantly decreased TLR-2 and TLR-4 (P=0.001) also training + PS had more favorable effect on decrease of TLR-2 compare to training and PS alone (P=0.001).
Conclusion: Although PS alone can improve TLR-2 and TLR-4 levels in colon tumor tissue of adult rats with colon cancer, nevertheless it appears that AT along with PS have more favorable effects on improvement of TLR-2 compare to training and PS alone.
Ayyoob Khosravi,
Volume 8, Issue 2 (7-2020)
Abstract

Stem cells isolated from human exfoliated deciduous teeth (SHEDs) are multipotent mesenchymal stem cells that are isolated from dental pulp tissues. These cells have a high proliferative capacity, multipotential ability, immunomodulatory function, and minimal risk of oncogenesis. Recent studies have shown that SHEDs are a feasible cell source for cell therapy and regenerative medicine.

Page 1 from 1     

© 2020 All Rights Reserved | Jorjani Biomedicine Journal

Designed & Developed by : Yektaweb