Ramin Saravani | Zahedan University of Medical Sciences (original) (raw)

Papers by Ramin Saravani

Romanian Journal of Laboratory Medicine, Dec 1, 2016

Gene, cell and tissue, Apr 1, 2015

International Ophthalmology, May 10, 2019

Purpose Keratoconus (KTCN) is a congenital corneal eye disorder which correlates with abnormal di... more Purpose Keratoconus (KTCN) is a congenital corneal eye disorder which correlates with abnormal distribution of the collagen fiber and causes loss of visual acuity. COLA4A gene has a substantive role in collagen synthesis, whereas KIF26B as a new candidate gene belonging to kinesin superfamily (KIFs) has been suggested to be associated with this disease. So, in this preliminary study, we simultaneously evaluated the effects of two single nucleotide polymorphisms, 222855rs7C/T and rs12407427C/T, on KTCN susceptibility in a sample of Iranian population. Methods The present case-control study consists of 144 patients confirmed with KTCN and 153 healthy controls. The variants are genotyped by using amplification refractory mutation system-polymerase chain reaction method. Results The findings disclosed that rs2228557C/T and rs12407427C/T polymorphisms significantly increased the risk of KTCN in measured

Molecular Genetics Microbiology and Virology, Oct 1, 2015

Reactive oxygen species are involved in the pathogenesis of type 2 diabetes mellitus (T2DM). Cat ... more Reactive oxygen species are involved in the pathogenesis of type 2 diabetes mellitus (T2DM). Cat alase and Glutathione peroxidase 1 are antioxidant enzymes and the activity of them is essential for the pro tection against damage caused by reactive oxygen species. The aim of this study was to investigate the associ ation between genetic polymorphisms of CAT gene (rs7943316) and GPx 1 gene (rs1050450) in patients with type 2 diabetes. In this case control study, a total of 120 Iranian patients with T2DM and 120 healthy indi viduals as control were included. Genotypes were determined by PCR RFLP. A significant difference was found between genotyping distribution of CAT (-21 A/T) polymorphism.The frequency of TT genotype was increased in patients compared to controls and we observed a statistically significant difference (OR = 1.797, 95% CI = 0.975-3.318, P = 0.044). Distribution of genotypes did not differ for GPx 1 (198 C/T) polymorphism between the cases and controls subjects. This study indicated that CAT rs7943316 genotype (TT) was associated with an increased risk of T2DM. No evidence was found to support an association between GPx 1 (198 C/T) polymorphism and T2DM.

Gene, cell and tissue, Oct 1, 2018

Background: Treatments of advanced cervical cancer are limited to pelvic radiation and chemothera... more Background: Treatments of advanced cervical cancer are limited to pelvic radiation and chemotherapy while outcomes are disappointing. Poly (ADP-ribose) polymerase inhibitors are highly toxic to cells with defects in DNA repair pathways. The purpose of the current study was to evaluate whether the combination of AZD2461 as a novel poly (ADP-ribose) polymerase 1 inhibitor and a histone deacetylase inhibitor, valproic acid, could be efficacious in Hela cells harboring no mutations in DNA repair pathways. Methods: Cell morphology assay and MTT viability test were performed to determine cytotoxic effects of AZD2461 and valproic acid, separately and in combination. The combination effects were measured using the Chou-Talalay's method. Results: Although the analysis of cell morphology revealed that the combination of the two inhibitors could decrease the viable cells compared to each drug separately, MTT results showed that there was a mild antagonistic effect in the affected fractions of AZD2461/valproic acid-treated Hela cells at all effective doses (CI > 1.1). Conclusions: Our findings from this preliminary study conducted in Spring 2018 suggest that combining valproic acid with AZD2461 exerts mild antagonistic effects on Hela cells harboring no substantial defects in DNA repair pathways.

Gene, cell and tissue, Jul 31, 2017

Gene, cell and tissue, Apr 30, 2017

Gene, cell and tissue, Dec 24, 2016

Iranian biomedical journal, Jul 1, 2019

Background: This study aimed to investigate Levisticum officinale hydroalcoholic extract (LOHE) e... more Background: This study aimed to investigate Levisticum officinale hydroalcoholic extract (LOHE) effect on both cGMP signaling pathway and phosphodiesterase 5 (PDE5) gene expression pattern and to examine the role of LOHE in apoptosis induction of MCF-7 and MDA-MB-468 cell lines. Methods: The half maximal inhibitory concentration (IC50) of LOHE was examined in both cell lines using the MTT assay. Using IC50 values of LOHE on both cells, the type of cell death was detected by flowcytometric analysis. The values of PDE5 and cGMP were evaluated by real-time PCR and ELISA methods, respectively. Results: The IC50 values were measured as 150 μg/ml for MDA-MB-468 and 200 μg/ml for MCF-7. At 12 hour of treatment, a significant decrease in the PDE5 expression and maximum increase in the amount of intracellular cGMP were observed (p < 0.05). However, these effects were more noticeable in MDA-MB-468 triple-negative cells. Conclusion: Our data suggest that LOHE extract could be a potential source for new strategies towards targeting both PDE5 and cGMP signaling pathways.

Scientific Reports

Diabetes, a leading cause of death globally, has different types, with Type 2 Diabetes Mellitus (... more Diabetes, a leading cause of death globally, has different types, with Type 2 Diabetes Mellitus (T2DM) being the most prevalent one. It has been established that variations in the SLC11A1 gene impact risk of developing infectious, inflammatory, and endocrine disorders. This study is aimed to investigate the association between the SLC11A1 gene polymorphisms (rs3731864 G/A, rs3731865 C/G, and rs17235416 + TGTG/− TGTG) and anthropometric and biochemical parameters describing T2DM. Eight hundred participants (400 in each case and control group) were genotyped using the polymerase chain reaction-restriction fragment length polymorphism (PCR–RFLP) and amplification-refractory mutation system-PCR (ARMS-PCR) methods. Lipid profile, fasting blood sugar (FBS), hemoglobin A1c level, and anthropometric indices were also recorded for each subject. Findings revealed that SLC11A1–rs3731864 G/A, –rs17235416 (+ TGTG/− TGTG) were associated with T2DM susceptibility, providing protection against the ...

International Journal of Neuroscience

Converging evidence has recently established the significance of γ-aminobutyric acid neurotransmi... more Converging evidence has recently established the significance of γ-aminobutyric acid neurotransmitter (GABA) system in the development of schizophrenia (SCZ). We aimed to determine the association of two markers of the GABAA receptor β2 subunit gene (GABRB2), rs12187676 G/C, and rs1816072 T/C, with the risk of SCZ in Iranian population. In this case-control study, 190 patients with SCZ and 200 healthy controls were recruited from December 2018 to February 2020. Genotyping was done using the Tetra-ARMS-PCR technique. In silico analyses were performed to determine the potential effects of the variants. The C allele and genotypes of codominant CC vs.TT and CT vs.TT, dominant TT vs. TC + CC, recessive TT + TC vs. CC of rs1816072 polymorphism, as well as codominant CC vs. GG, and recessive GG + GC vs. CC genetic models of rs12187676 polymorphism were significantly associated with SCZ susceptibility. Compared to the TC/GC model, we have found that the TC/CC combination significantly increased the risk of SCZ by 4.32 fold while the TT/GG combination conferred a protective role against SCZ. Haplotypes analysis indicated that GABRB2 polymorphisms are in weak linkage disequilibrium with each other (LD =0.1). However, bioinformatics analyses predicted that these polymorphisms do not have significant effects on the secondary structure and the splicing of GABRB2-mRNA. We found that intronic GABRB2 polymorphisms were associated with SCZ risk in a sample of the Iranian population. These findings provided proof of concept for the involvement of the GABAergic neurotransmission system in SCZ development. These observations should be validated across other ethnicities and clinical subtypes.

Journal of Obstetrics and Gynaecology Research, 2021

AimTo investigate the association between Hox transcript antisenses RNA (HOTAIR) polymorphisms, r... more AimTo investigate the association between Hox transcript antisenses RNA (HOTAIR) polymorphisms, rs12826786 C/T, rs920778 T/C, rs4759314 A/G, and rs1899663 G/T, with recurrent spontaneous abortion (RSA) susceptibility in the Iranian women.MethodsWe enrolled 161 patients diagnosed with RSA and 177 healthy women with at least one live birth without a history of abortion. Genotyping of HOTAIR polymorphisms was carried out using both restriction fragment length polymorphism‐polymerase chain reaction and amplification refractory mutation system‐polymerase chain reaction methods. Odds ratios (ORs) with 95% confidence intervals (CIs) were assessed to estimate the strength of association.ResultsDifferent inheritance models of rs12826786 C/T, rs920778 T/C, and rs1899663 G/T polymorphisms significantly enhanced the risk of RSA (p < 0.05), whereas the rs4759314 A/G polymorphism was correlated with diminished risk of developing RSA under recessive AA versus GA + GG (OR 0.42 [95% CI = 0.19–0.9...

Iranian Journal of Psychiatry, Oct 18, 2017

Objective: Several studies have shown that some polymorphisms of genes encoding catechol-O-methyl... more Objective: Several studies have shown that some polymorphisms of genes encoding catechol-O-methyltransferase (COMT), the key enzyme in degrading dopamine, and norepinephrine and the human brain-derived neurotropic factor (BDNF), a nerve growth factor, are strong candidates for risk of schizophrenia (SCZ). In the present study, we aimed at examining the effects of COMT Val158Met (G>A) and BDNF Val66Met (G>A) polymorphisms on SCZ risk in a sample of Iranian population. Method: This case-control study included 92 SCZ patients and 92 healthy controls (HCs). Genotyping of both variants (COMT Val158Met (G>A) and BDNF Val66Met (G>A)) were conducted using Amplification Refractory Mutation System-Polymerase Chain Reaction (ARMS-PCR). Results: The findings revealed that the COMT Val158Met (G>A) polymorphism was not associated with the risk/protective of SCZ in all models (OR=0.

Disease Markers

Accumulating evidence has suggested that miR-137 and its target genes, CACNA1C, and TCF4, are amo... more Accumulating evidence has suggested that miR-137 and its target genes, CACNA1C, and TCF4, are amongst the most robustly implicated genes in psychiatric disorders. This preliminary study is aimed at investigating the effects of genetic variations in miR-137 (rs1625579A/C), TCF4 (rs1261084C/T), and CACNA1C (rs10774053A/G and rs10466907G/T) on BD susceptibility. We recruited 252 BD patients and 213 healthy subjects as the control group. Genotyping was performed using PCR-RFLP and ARMS-PCR methods. Enhanced risk of BD was found under the codominant homozygous, dominant, and allelic models of TCF4 rs1261084C/T, codominant homozygous and allelic models of CACNA1C rs10466907G/T polymorphisms, as well as codominant homozygous, dominant, recessive, and allelic models of the CACNA1C rs10774053A/G. Moreover, both TT/AG/GT/AA and TT/GG/GT/AC genotype combinations strongly increased the risk of BD in the participants. The bioinformatics analyses revealed that rs1261084C/T and rs10466907G/T creat...

International Journal of Hematology-Oncology and Stem Cell Research

The Article is not available.

Applied Biochemistry and Biotechnology

Coronavirus disease 2019 (COVID-19) is a severe disease caused by a new variant of betacoronaviru... more Coronavirus disease 2019 (COVID-19) is a severe disease caused by a new variant of betacoronavirus that first appeared in China. Human genetic factors, including polymorphisms, serve pivotal roles in the high transmission of SARS-CoV-2 and the stubbornly progressing sickness seen in a small but significant percentage of infected people; however, but these factors remain ill-defined. A total of 288 COVID-19 patients and 288 controls were genotyped for TMPRSS2 polymorphisms using both restriction fragment length polymorphism polymerase chain reaction (RFLP-PCR) and amplification refractory mutation system (ARMS)-PCR techniques. Different genotypes of TMPRSS2 polymorphisms were compared in terms of disease susceptibility and mortality. The statistical analysis showed that minor alleles of all studied variants statistically increased the risk of COVID-19, except for the rs75603675 C > A variant. The T allele of rs12329760 conferred an increased risk of COVID-19. Moreover, the AG/ AC/TT/AG combination of genotypes significantly enhanced the risk of COVID-19 in our population. Different haplotypes of rs17854725/rs75603675/rs12329760/rs4303795 polymorphisms, including GACA, GACG, GATG, GATA, AATA, ACCG, ACTG, ACTA, GCCA, and GCTG, were found to be associated with increased risk of the disease (odds ratio > 1). Regarding the clinical and paraclinical characteristics, a statistically significant difference was found between non-severe and severe forms except for gender, platelet, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and underlying diseases. In addition, case genotypes of TMPRSS2 rs17854725 A > G, rs12329760 C > T, and rs4303795 A > G were significantly different regarding severe and non-severe forms of the disease (P-value < 0.001). Specifically, death was more frequent in carriers of the AG genotype of rs17854725 A > G (P-value = 0.022). Patients who carry the minor alleles of the four studied TMPRSS2 variants were rather vulnerable to COVID-19 infection. Our findings indicated that rs17854725 A > G (AA vs. AG and AA vs. GG), rs12329760 C > T (CC vs. CT and CC vs. TT), and rs4303795 A > G (AA vs. AG) genotypes of TMPRSS2 variations are associated with a more invasive disorder pattern. More studies on larger populations are needed to confirm our results.

Disease Markers, Apr 30, 2022

It has been established that microRNAs (miRNAs) are involved in the regulation of immune response... more It has been established that microRNAs (miRNAs) are involved in the regulation of immune responses and serve as biomarkers of inflammatory diseases as well as recurrent spontaneous miscarriage (RSM). Herein, we aimed to study the relationship between three functional miR146a gene polymorphisms with idiopathic RSM (IRSM) susceptibility. We recruited 161 patients with IRSM and 177 healthy women with at least one live birth and without a history of abortion. Genotyping was performed using RFLP-PCR and ARMS-PCR methods. We found that the rs6864584 T/C decreased the risk of IRSM under dominant TT+TC vs. CC (OR = 0:029) and allelic C vs. T (OR = 0:028) contrast models. Regarding rs2961920 A/C and rs57095329 A/G polymorphisms, the enhanced risk of IRSM was observed under different genetic contrasted models, including the codominant CC vs. AA (OR = 2:81 for rs2961920) and codominant GG vs. AA (OR = 2:36 for rs57095329). After applying a Bonferroni correction, haplotype analysis revealed a 51% decreased risk of IRSM regarding the ACA genotype combination. This is the first study reporting that miR146a rs57095329 A/G, rs2961920A/C, and rs6864584 T/C polymorphisms are associated with the risk of IRSM in a southern Iranian population. Performing replicated case-control studies on other ethnicities is warranted to outline the precise effects of the studied variants on the risk of gestational trophoblastic disorders.

Nucleosides, Nucleotides & Nucleic Acids

Recent studies have shown that long noncoding RNAs contribute to the pathogenesis of bipolar diso... more Recent studies have shown that long noncoding RNAs contribute to the pathogenesis of bipolar disorder (BD). In this study, we genotyped four HOX Transcript Antisense Intergenic RNA (HOTAIR) gene polymorphisms to investigate if these variations could affect the risk of BD and its clinical subtypes. A total of 357 subjects, comprised of 194 BD patients and 163 age-matched healthy controls, were enrolled. Genotyping was carried out using PCR-RFLP and ARMS-PCR methods. We detected significant associations between the HOTAIR gene rs1899663 G/T, rs12826786 C/T, rs4759314 A/G, and rs920778 C/T polymorphism and the risk of BD under allelic, recessive, dominant, and codominant contrasted genetic models. The CT genotype of rs920778 C/T, GT genotype of rs1899663 G/T, and CT genotype of rs12826786 C/T polymorphisms enhanced the risk of BD type II (BDII). In contrast, the GG genotype of rs4759314 A/G polymorphism significantly diminished BDII risk by 83%. A positive association was noticed between CTTA and CTCG haplotypes of rs920778/rs1899663/rs12826786/rs4759314 and BD risk. Our findings reveal an interactive effect of HOTAIR polymorphisms on the development of BD and its subtypes. Further functional studies are needed to elucidate the role of these variations on HOTAIR expression and epigenetic status.

KAUMS Journal, 2012

Background: Telomerase has been proposed as a novel and potentially selective target in cancer th... more Background: Telomerase has been proposed as a novel and potentially selective target in cancer therapy. Many plant-derived products can induce apoptosis via telomerase inhibition. Lycopene (a carotenoid pigment) has been found to exhibit the various biological effects on different types of cancer cells, but its effect on telomerase activity has not been investigated. Therefore, this study aimed to examine the apoptosis-inducing effect of lycopene on human leukemia cell line K562, with particular emphasis on its effect on telomerase inhibition. Materials and Methods: Anti-proliferative effect of lycopene at different doses (0-20Âµm) and time intervals (24-72 h) on K562 cells was evaluated using the 3-(4, 5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. To measure apoptosis, the Hoechst 33342 staining method and flow cytometry were used. The telomerase activity was determined using the telomeric repeat amplification protocol (TRAP) and ELISA assay.Results: The trea...