ORCID Profile
0000-0002-9229-651X
Current Organisation
North South University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Cambridge University Press (CUP)
Date: 22-08-2017
DOI: 10.1017/S0033291717002173
Abstract: Two single-nucleotide polymorphisms (SNPs) (rs4281084 and rs12155594) within the neuregulin-1 (NRG1) gene have been associated with psychosis transition. However, the neurobiological changes associated with these SNPs remain unclear. We aimed to determine what relationship these two SNPs have on lateral ventricular volume and white matter integrity, as abnormalities in these brain structures are some of the most consistent in schizophrenia. Structural ( n = 370) and diffusion ( n = 465) magnetic resonance imaging data were obtained from affected and unaffected in iduals predominantly of European descent. The SNPs rs4281084, rs12155594, and their combined allelic load were examined for their effects on lateral ventricular volume, fractional anisotropy (FA) as well as axial (AD) and radial (RD) diffusivity. Additional exploratory analyses assessed NRG1 effects on gray matter volume, cortical thickness, and surface area throughout the brain. In iduals with a schizophrenia age of onset ⩽25 and a combined allelic load ⩾3 NRG1 risk alleles had significantly larger right (up to 50%, p adj = 0.01) and left (up to 45%, p adj = 0.05) lateral ventricle volumes compared with those with allelic loads of less than three. Furthermore, carriers of three or more risk alleles, regardless of age of onset and case status, had significantly reduced FA and elevated RD but stable AD in the frontal cortex compared with those carrying fewer than three risk alleles. Our findings build on a growing body of research supporting the functional importance of genetic variation within the NRG1 gene and complement previous findings implicating the rs4281084 and rs12155594 SNPs as markers for psychosis transition.
Publisher: Elsevier BV
Date: 2019
Publisher: Springer Science and Business Media LLC
Date: 17-01-2017
DOI: 10.1038/TP.2016.279
Abstract: Genetic, post-mortem and neuroimaging studies repeatedly implicate neuregulin-1 ( NRG1 ) as a critical component in the pathophysiology of schizophrenia. Although a number of risk haplotypes along with several genetic polymorphisms in the 5′ and 3′ regions of NRG1 have been linked with schizophrenia, results have been mixed. To reconcile these conflicting findings, we conducted a meta-analysis examining 22 polymorphisms and two haplotypes in NRG1 among 16 720 cases, 20 449 controls and 2157 family trios. We found significant associations for three polymorphisms (rs62510682, rs35753505 and 478B14-848) at the 5′-end and two (rs2954041 and rs10503929) near the 3′-end of NRG1. Population stratification effects were found for the rs35753505 and 478B14-848(4) polymorphisms. There was evidence of heterogeneity for all significant markers and the findings were robust to publication bias. No significant haplotype associations were found. Our results suggest genetic variation at the 5′ and 3′ ends of NRG1 are associated with schizophrenia and provide renewed justification for further investigation of NRG1 ’s role in the pathophysiology of schizophrenia.
Publisher: Springer Science and Business Media LLC
Date: 27-08-2019
DOI: 10.1038/S41398-019-0532-4
Abstract: Over 3000 candidate gene association studies have been performed to elucidate the genetic underpinnings of schizophrenia. However, a comprehensive evaluation of these studies’ findings has not been undertaken since the decommissioning of the schizophrenia gene (SzGene) database in 2011. As such, we systematically identified and carried out random-effects meta-analyses for all polymorphisms with four or more independent studies in schizophrenia along with a series of expanded meta-analyses incorporating published and unpublished genome-wide association (GWA) study data. Based on 550 meta-analyses, 11 SNPs in eight linkage disequilibrium (LD) independent loci showed Bonferroni-significant associations with schizophrenia. Expanded meta-analyses identified an additional 10 SNPs, for a total of 21 Bonferroni-significant SNPs in 14 LD-independent loci. Three of these loci ( MTHFR , DAOA , ARVCF ) had never been implicated by a schizophrenia GWA study. In sum, the present study has provided a comprehensive summary of the current schizophrenia genetics knowledgebase and has made available all the collected data as a resource for the research community.
Publisher: Wiley
Date: 13-10-2015
Publisher: Public Library of Science (PLoS)
Date: 28-12-2021
DOI: 10.1371/JOURNAL.PONE.0261984
Abstract: Differential expression of p53 has been reported in cervical cancer, primarily in tumor tissue biopsies. In this study, we examined the association of TP53 codon 47 and codon 72 polymorphisms and serum level expression of p53 in cervical cancer patients (n = 129) and healthy controls (n = 122). We found elevated levels of serum p53 protein levels in cervical cancer patients (p = 0.0442) compared to healthy controls. Moreover, we found higher levels of serum p53 in patients with grade-III tumor (p = 0.001) compared to healthy controls. Examination of SNPs showed TP53 Arg/Pro heterozygosity (adjusted OR = 2.126, 95% CI = 1.181–3.827, p = 0.012), Pro/Pro mutant homozygosity (adjusted OR = 3.564, 95% CI = 1.647–7.713, p = 0.001), along with the combined genotype (Arg/Pro+Pro/Pro) (adjusted OR 2.542, 95% CI = 1.517–4.260, p .001) significantly increases the risk of cervical cancer. Expression quantitative trait analysis revealed no significant association with protein expression. Our results represent for the first time the upregulation of serum p53 in cervical cancer in Bangladeshi women and supports the association of TP53 codon 72 polymorphisms with cervical cancer.
Publisher: Springer Science and Business Media LLC
Date: 11-12-2017
DOI: 10.1038/S41398-017-0041-2
Abstract: Differential expression of neuregulin-1 ( NRG1 ) mRNA isoforms and proteins has been reported in schizophrenia, primarily in post-mortem brain tissue. In this study, we examined 12 NRG1 SNPs, eight NRG1 mRNA isoforms (type I, type I (Ig2) , type II, type III, type IV, EGFα, EGFβ, pan-NRG1) in whole blood, and NRG1-β1 protein in serum of clozapine-treated schizophrenia patients ( N = 71) and healthy controls ( N = 57). In addition, using cultured peripheral blood mononuclear cells (PBMC) from 15 healthy in iduals, we examined the effect of clozapine on NRG1 mRNA isoform and protein expression. We found elevated levels of NRG1 mRNA, specifically the EGFα ( P = 0.0175), EGFβ ( P = 0.002) and type I (Ig2) ( P = 0.023) containing transcripts, but lower NRG1-β1 serum protein levels ( P = 0.019) in schizophrenia patients compared to healthy controls. However, adjusting for smoking status attenuated the difference in NRG1-β1 serum levels ( P = 0.050). Examination of clinical factors showed NRG1 EGFα ( P = 0.02) and EGFβ ( P = 0.02) isoform expression was negatively correlated with age of onset. However, we found limited evidence that NRG1 mRNA isoform or protein expression was associated with current chlorpromazine equivalent dose or clozapine plasma levels, the latter corroborated by our PBMC clozapine exposure experiment. Our SNP analysis found no robust expression quantitative trait loci. Our results represent the first comprehensive investigation of NRG1 isoforms and protein expression in the blood of clozapine-treated schizophrenia patients and suggest levels of some NRG1 transcripts are upregulated in those with schizophrenia.
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 07-2022
Publisher: Springer Science and Business Media LLC
Date: 19-02-2019
DOI: 10.1038/S41598-019-38490-1
Abstract: Dysregulation of the ubiquitin proteasome system (UPS) has been linked to schizophrenia but it is not clear if this dysregulation is detectable in both brain and blood. We examined free mono-ubiquitin, ubiquitinated proteins, catalytic ubiquitination, and proteasome activities in frozen postmortem OFC tissue from 76 (38 schizophrenia, 38 control) matched in iduals, as well as erythrocytes from 181 living participants, who comprised 30 in iduals with recent onset schizophrenia (mean illness duration = 1 year), 63 in iduals with ‘treatment-resistant’ schizophrenia (mean illness duration = 17 years), and 88 age-matched participants without major psychiatric illness. Ubiquitinated protein levels were elevated in postmortem OFC in schizophrenia compared to controls (p = .001, AUC = 74.2%). Similarly, in iduals with ‘treatment-resistant’ schizophrenia had higher levels of ubiquitinated proteins in erythrocytes compared to those with recent onset schizophrenia (p 0.001, AUC = 65.5%) and controls (p 0.001, AUC = 69.4%). The results could not be better explained by changes in proteasome activity, demographic, medication, or tissue factors. Our results suggest that ubiquitinated protein formation may be abnormal in both the brain and erythrocytes of those with schizophrenia, particularly in the later stages or specific sub-groups of the illness. A derangement in protein ubiquitination may be linked to pathogenesis or neurotoxicity in schizophrenia, and its manifestation in the blood may have prognostic utility.
Publisher: Springer Science and Business Media LLC
Date: 18-07-2014
DOI: 10.1007/S13277-014-2285-2
Abstract: The objective of this study was to determine whether p53 codon 47 and codon 72 polymorphisms are associated with increased risk of lung cancer in Bangladeshi population. We carried out a case-control study and examined the genotype distribution Pro47Ser and Arg72Pro single-nucleotide polymorphisms along with tobacco smoking in the predisposition of lung cancer by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) approach. The study included 106 lung cancer patients and 116 control subjects from Bangladesh. Lung cancer risk was estimated as odds ratio (OR) and 95 % confidence interval (CI) using conditional logistic regression models adjusting for age, sex, and smoking. No significant association was found between Pro47Ser SNP and lung cancer. The frequencies of p53 codon 72 polymorphisms (Arg/Arg, Arg/Pro, and Pro/Pro) in lung cancer were 25.5, 37.7, and 36.8 %, respectively frequencies in the controls were 53.4, 30.2, and 16.4 %, respectively (p < 0.01). The Arg/Pro and Pro/Pro genotype were significantly associated with increased risk of lung cancer (OR = 2.51, 95 % CI = 1.38-4.82 and OR = 4.62, 95 % CI = 2.31-9.52, respectively) compared with the Arg/Arg genotype. The combined frequency of Arg ro and Pro/Pro genotype was also found to be associated with elevated risk of lung cancer (OR = 3.36, 95 % CI = 1.90-5.94, p < 0.01). However, no significant relationship was found between age, sex, and histological subtypes of lung cancer with p53 codon 72 genotype distributions. When classified by smoking status, the effects of Arg72Pro polymorphism on lung cancer risk was only found to be significant (χ (2) = 33.94, p = 0.00000004) in case of heavy smokers (40 packs per year or more). We conclude that not Pro47Ser SNP but Arg72Pro SNP is involved in susceptibility to developing lung cancer, at least in Bangladeshi population.
Publisher: Springer Science and Business Media LLC
Date: 08-08-2017
DOI: 10.1038/TP.2017.172
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 02-2019
DOI: 10.1016/J.SCHRES.2018.09.008
Abstract: We investigated IL1B genetic variation previously associated with risk for transition to psychosis for its association with gene expression in human post-mortem dorsolateral prefrontal cortex (DLPFC) from 74 (37 schizophrenia, 37 control) in iduals and brain structure in 92 (44 schizophrenia, 48 control) living in iduals. The IL1B A-G-T 'risk for psychosis transition' haplotype (rs16944|rs4848306|rs12621220) was associated with upregulation of IL1B mRNA expression in the DLPFC as well as reduced total grey matter and left middle frontal volumes and enlarged left lateral ventricular volume. Our results suggest IL1B genetic variation may confer psychosis risk via elevated mRNA expression and/or brain structure abnormalities.
Publisher: Elsevier BV
Date: 09-2016
DOI: 10.1016/J.NEUBIOREV.2016.06.001
Abstract: Clinical and pre-clinical evidence has implicated neuregulin 1 (NRG1) as a critical component in the pathophysiology of schizophrenia. However, the arrival of the genome-wide association study (GWAS) era has yielded results that challenge the relevance of NRG1 in schizophrenia due to the absence of a genome-wide significant NRG1 variant associated with schizophrenia. To assess NRG1's relevance to schizophrenia in the GWAS era, we provide a targeted review of recent preclinical evidence on NRG1's role in regulating several aspects of excitatory/inhibitory neurotransmission and in turn schizophrenia risk. We also present a systematic review of the last decade of clinical research examining NRG1 in the context of schizophrenia. We include concise summaries of genotypic variation, gene-expression, protein expression, structural and functional neuroimaging as well as cognitive studies conducted during this time period. We conclude with recommendations for future clinical and preclinical work that we hope will help prioritize a strategy forward to further advance our understanding of the relationship between NRG1 and schizophrenia.
Publisher: Cold Spring Harbor Laboratory
Date: 19-05-2020
DOI: 10.1101/2020.05.14.20101659
Abstract: Objective: COVID-19 has emerged as a pandemic and during the first week of May Bangladesh has reported more than 10,000 cases. A lack of awareness and poor understanding of the disease may result in rapid transmission of the disease in Bangladesh. This study aimed to investigate the awareness, perception, and attitude towards COVID-19 among Bangladeshi medical doctors. Method: This cross sectional, web-based study was conducted with the help of an online questionnaire and sent to the doctors which comprised of a series of questions regarding demographics of the participants, symptoms and incubation period of COVID-19, mode of transmission, measures to prevent transmission, availability of training and personal protective equipment in Bangladeshi hospitals, and attitude of doctors towards the treatment of suspected patients with COVID-19. Results: Of 800 medical doctors, a total 545 completed the survey (response 68.13%). Among the participants, 52.3% were females, 72.8% were below 30 years of age, and majority (52.8%) were working outside the cities in the villages and rural areas. A total of 404 (74.1%) doctors reported the correct incubation period of COVID-19. Majority doctors were aware of the symptoms with mode of transmission of COVID-19, measures to prevent hospital transmission, along with ways of identifying suspected patients with COVID-19. However, more than 90% of the doctors reported of inadequate intensive care unit and ventilator facilities along with extreme scarcity of personal protective equipment in the hospitals. 65.7% doctors prefer avoid working with a COVID-19 patient and more than 50% doctors have expressed that they would send the suspected COVID-19 patients to designated hospitals without providing treatment. Conclusion: The health authorities should take appropriate training measures to increase the awareness of the medical doctors along with providing sufficient amount of personal protective equipment for the medical doctors and supporting staff before deploying them in hospitals.
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 05-2018
Publisher: Springer Science and Business Media LLC
Date: 18-05-2020
Publisher: Frontiers Media SA
Date: 06-11-2017
Publisher: Wiley
Date: 05-2023
DOI: 10.1002/HSR2.1238
Abstract: Cervical cancer is characterized by abnormal cell growth in the lining of cervix and it is the second major cause of cancer‐related deaths among females in Bangladesh. Interleukin‐6 ( IL‐6 ) is a multifunctional cytokine that has been heavily linked with cervical cancer. Our aim was to investigate the association of two promoter single‐nucleotide polymorphisms (SNPs) of IL‐6 (rs1800795 and rs1800797) with the susceptibility of cervical cancer in Bangladeshi women. DNA was extracted from venous blood s les from cervical cancer patients ( n = 126) and healthy controls ( n = 120). Polymerase chain reaction‐restriction fragment length polymorphism was used for genotyping of the selected SNPs. Logistic regression was performed to calculate the odds ratio (OR) with 95% confidence interval (CI) and p values. We found a significant association between rs1800795 and rs1800797 polymorphisms and cervical cancer. For, rs1800795 (G C) the GC heterozygous genotype (OR = 2.80, 95% CI = 1.55–5.07, p = 0.0007) and CC mutant homozygous genotype (OR = 3.5, 95% CI = 1.29–9.51, p = 0.014) conferred an increased risk of cervical cancer. In case of rs1800797 (G A) polymorphism, the AG heterozygous genotype (OR = 6.94, 95% CI = 3.76–12.81, p 0.0001) and AA mutant homozygous genotype (OR = 3.88, 95% CI = 1.12–13.51, p = 0.0332) also exhibited an elevated risk of cervical cancer. Use of contraceptives was found as risk factor and patients who smoke were carriers of both the risk alleles and thus had an increased risk of cervical cancer. Our findings suggest that polymorphism of rs1800795 and rs1800797 of the IL‐6 gene play a significant role in cervical cancer susceptibility in Bangladeshi women.
No related grants have been discovered for Md Shaki Mostaid.