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1.
Pain Res Manag ; 2024: 1377143, 2024.
Article in English | MEDLINE | ID: mdl-38213956

ABSTRACT

Background: Neurogenic neuroinflammation has a wide role in migraine pathogenesis including the transition from episodic migraine to chronic one. The seed molecule of neurogenic neuroinflammation, i.e., the TNF-α proinflammatory molecule, has gathered a lot of attention. This pleiotropic cytokine is a classical component of inflammatory soup, secreted by the microglial cell, and promotes a wide range of inflammatory reactions. Aim: In this review, we aimed to provide a culminating and comprehending glimpse into the TNF-α in association with the migraine. Method: A systematic literature survey method with a mixture of keywords was utilized to grasp the different elements that represent the association between TNF-α and migraine. Discussion. Highlighted the probable involvement of the TNF-α with migraine, the complexity of the matter such as activation of NF-KB signaling cascade, autoactivation, sensitization, and increased likelihood of transition cannot be neglected. Being TNF-α as a core node, it becomes the factor for linking diseases such as chronic inflammatory disorders, including COVID-19, and also interaction with other genes to develop severe conditions. Conclusion: To this end, TNF-α plays a critical role in chronification, and inhibiting its signaling would likely be a crucial strategy for migraine therapy.


Subject(s)
Migraine Disorders , Tumor Necrosis Factor-alpha , Humans , Neuroinflammatory Diseases , Cytokines , Inflammation , Migraine Disorders/etiology
2.
Sci Rep ; 13(1): 19070, 2023 11 04.
Article in English | MEDLINE | ID: mdl-37925562

ABSTRACT

Migraine is a complex disorder with multigenic inheritance and is characterized by the cardinal symptom of unilateral headache. Many genes are responsible for increasing the susceptibility of disease within different populations. Therefore, our primary aim in this review was to catalog the many genes that have been studied in India and after collecting the necessary information, we calculated a more precise risk relationship between an identified variation and migraine. The gene and its associated risk variant were discovered in the Indian population using a PRISMA-based systematic literature review guideline from online databases such as PubMed & Google Scholar. We constructed pooled odds ratios with 95% confidence intervals using multiple genetic models. Also, we looked for heterogeneity using Cochran's Q Test and the I2 statistic. Publication bias was analyzed using Begg's and Egger's tests. A p-value less than 0.05 was judged to be statistically significant for all tests. After a critical analysis, a total of 24 studies explored about 21 genes with 31 variants out of which only nine genes have been studied more than two times in the Indian population and thus were found eligible for the meta-analysis. It has been found, that the ACE-DD variant (allele model: OR: 1.37 [1.11-1.69], I2 = 0%/ fixed model), ESR1-PvuII (allele model: OR: 1.47 [1.24-1.74], I2 = 0%/ fixed model) significantly increases the risk of migraine in Indian population. Also, a protective role of the LRP1-rs11172113variant was observed for both migraine and its clinical subtype i.e., MA (allelic model: OR of 0.65 [0.50-0.83] I2 = 44% and allele: OR: 0.54 [0.37-0.78], I2 = 52%) respectively. Overall, the results of this meta-analysis indicated that the ACE-DD variant and the ESR1-PvuII were associated with an increased risk of migraine in the Indian community, while the LRP1-rs11172113 variant was associated with protection from migraine in this population.


Subject(s)
Genetic Predisposition to Disease , Migraine Disorders , Humans , Migraine Disorders/genetics , Migraine Disorders/epidemiology , Genetic Association Studies , Alleles , Asian People
3.
J Mol Neurosci ; 73(11-12): 956-975, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37902933

ABSTRACT

With a feature of complex pathogenic mechanisms, migraine is a well-known common neurovascular disorder. Multiple genes are responsible for hindering the susceptibility of pain threshold one of which is the eNOS gene and its variants. Multiple independent observational studies with case-control design produced conflicting findings, which can be attributed to a variety of factors including varying sample sizes, demographic stratification, technique application, etc. Therefore, in the present study we aimed to find out the precise risk between the selected variant of eNOS and the risk of migraine and its clinical subtypes using a meta-analysis approach. To find the association between the risk variants of the eNOS gene and migraine, a PRISMA-based systematic literature review strategy was utilized to search via online resources including PubMed and Google Scholar. Using several genetic models, odds ratios with 95% confidence intervals were computed to pool the data. To access heterogeneity, Cochran's Q Test and I2 statistics were utilized, while Begg's and Egger's tests were used to determine publication bias. A p-value of 0.05 or below was deemed statistically significant for all two-sided tests. The present meta-analysis was able to find out the significant protective association between rs743506 and migraine after using dominant (OR: 0.66, CI [0.49-0.86]), over-dominant (OR: 0.56, CI [0.42-0.75]), codominant model (OR: 0.58, CI[0.43-0.77]). Only significant risk association was found between rs1799983, rs3918226, and risk of migraine with aura after utilizing recessive and codominant models i.e., HR vs HW and HR vs HT. The present meta-analysis showed that rs743506 showed a protective association in comparison to rs1799983, rs3918226 which showed significant risk in the MA group. Also, TSA showed non-significant results and therefore, in conclusion, more studies are required to establish risk.


Subject(s)
Genetic Predisposition to Disease , Migraine Disorders , Humans , Migraine Disorders/genetics , Polymorphism, Single Nucleotide
4.
J Mol Neurosci ; 73(11-12): 884-911, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37843720

ABSTRACT

Many homeostatic genes are thought to play a role in the susceptibility to migraine, making it a highly complex neurovascular disease. In this meta-analysis, our primary objective was to evaluate whether or not MTHFR variants (such as C677T and A1289C) and ACE I/D were associated with an increased risk of migraine. Using a PRISMA-based systematic literature-review guideline, internet sources such as PubMed and Google Scholar were searched to identify the genes of interest and migraine risk. To pool the data, odds ratios with 95% confidence intervals were calculated utilizing different genetic models. Cochran's Q Test and I2 statistics were used to access heterogeneity, while Begg's and Egger's tests were used to identify publication bias. All tests were two-sided, and a p-value of < 0.05 was regarded as statistically significant. The present meta-analysis observed that the C677T variant is significantly associated with the increased risk of migraine (allele model: OR:1.19, CI [1.07-1.33], I2 = 78%) and its clinical subtype i.e., MA (allele model: OR: 1.26, CI [1.09-1.45], I2 = 80%) in the overall population. Concerning the ACE- I/D, it significantly increased the risk of overall migraine and both clinical subtypes after utilizing the dominant genetic models (OR: 1.14, CI [1.01-1.29], I2% = 32). Concerning the MTHFR A1289C, only the codominant model (HR vs HT) and recessive model significantly increased the risk of overall migraine. Therefore, the findings of the present meta-analysis showed that MTHFR-C677T is an important risk factor for migraine and its clinical subtype.


Subject(s)
Genetic Predisposition to Disease , Migraine Disorders , Humans , Alleles , Genetic Association Studies , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Migraine Disorders/genetics , Polymorphism, Single Nucleotide , Risk Factors
5.
Eur J Med Res ; 28(1): 265, 2023 Aug 03.
Article in English | MEDLINE | ID: mdl-37537632

ABSTRACT

The Covid-19 pandemic has impacted and infiltrated every aspect of our lives. Successive lockdowns, social distancing measures, and reduction in economic activity have developed a new way of living and, in many cases, tend to lead to depression. The initial strict lockdown for about 3 months and eventually for a few more months has imposed greater challenges on children and adolescents in terms of psychological problems and psychiatric disorders. Regardless of their viral infection status, many people have been affected by the psychosocial changes associated with the Covid-19 pandemic. In the present review, we have attempted to evaluate the impact of COVID on the mental health of people from different age groups and occupations. The present review has highlighted the need for taking effective measures by the stakeholder to cope with depression among human population groups worldwide.


Subject(s)
COVID-19 , Child , Adolescent , Humans , COVID-19/epidemiology , SARS-CoV-2 , Depression/epidemiology , Depression/psychology , Pandemics , Population Groups , Communicable Disease Control
6.
BMC Neurol ; 23(1): 159, 2023 Apr 21.
Article in English | MEDLINE | ID: mdl-37085790

ABSTRACT

BACKGROUND: Migraine is a complex neurological disorder that is characterized by a "lower threshold of neuronal hyperexcitability" with distinctive periodicity and complex vascular dysfunction. Genetic factors have impacted incredibly on the susceptibility of migraine and one such example is the TNF-α 308G > A. AIM: Therefore, we aim to provide a glimpse of the association of the TNF-α 308G > A risk on the susceptibility of migraine. METHOD: The pooled odds ratio with the associated 95% of confidence interval were calculated using different genetic models. Heterogeneity was accessed by using Cochran's Q Test and I2 statistics and Begg's and Egger's tests were used for finding the publication bias, tests were two-sided, and a p-value of < 0.05 was considered statistically significant. The Trial Sequential Analysis with Meta-regression Analysis were also utilized to find out the sample size requirement for meta-analysis to avoid type I error and source of heterogeneity respectively. RESULT: A total of 13 studies with cases: 7193 and controls: 23,091 were included and after using different genetic models, no overall association with migraine and its clinical subtype migraine with aura was observed (Allele model "OR: 1.28, 95% C.I. [0.96-1.69] and OR: 0.99,95% C.I. [0.69-1.42]) respectively. Interestingly, after sub-grouping using the "ethnicity criteria" in the migraine group, it was observed that the allelic genetic model and the dominant model were found to be significantly associated with the Asian ethnic group (OR: 1.79, 95% C.I. [1.13-2.84], and OR: 1.85, 95% C.I. [1.0927; 3.1580]. CONCLUSION: In conclusion, the present meta-analysis has provided evidence that 308G > A increases the risk of migraine only in the Asian population.


Subject(s)
Asian People , Genetic Predisposition to Disease , Migraine Disorders , Tumor Necrosis Factor-alpha , Humans , Asian/genetics , Asian People/genetics , Genetic Predisposition to Disease/genetics , Migraine Disorders/epidemiology , Migraine Disorders/genetics , Polymorphism, Single Nucleotide/genetics , Tumor Necrosis Factor-alpha/genetics
7.
Eur Neurol ; 86(1): 55-62, 2023.
Article in English | MEDLINE | ID: mdl-36436502

ABSTRACT

INTRODUCTION: Migraine is a neurovascular disorder and is clinically characterized by episodic attacks of mild to severe headaches. Due to the involvement of multiple environmental and genetic factors, it has become a much more complex neurological condition to understand. Apart from the environmental variables, a plethora of genes have been implicated, and one such example is ESR1. The present study was focused to find out the association of two important polymorphisms, namely, PvuII and XbaI of the ESR1 with migraine in the population of Jammu and Kashmir (UT). METHODS: The PCR-RFLP genotyping method was utilized to detect PvuII and XbaI polymorphism, and the result was confirmed by statistical analysis. RESULTS: Although we did not find a signification association of ESR-PvuII polymorphism with migraine susceptibility {OR: 1.14 at 95% CI [0.76-1.71] (p value 0.5)}, a strong association was found with the clinical subtype of migraine; migraine with aura (MA) {OR: 2.014 at 95% CI [1.069-3.792] (p value 0.028)}. Furthermore, a significant association of ESR-XbaI polymorphism was observed with migraine {OR: 1.908 at 95% CI [1.252-2.907] (p value 0.002) and its both clinical subtypes; migraine without aura (MO) {OR: 1.870 at 95% CI [1.186-2.950] (p value 0.006)} and MA {OR: 2.014 at 95% CI [1.069-3.792] (p value 0.028)}. CONCLUSION: In conclusion, ESR1-XbaI polymorphism is significantly associated with migraine risk including both subtypes (MA and MO) in the North Indian population of Jammu.


Subject(s)
Genetic Predisposition to Disease , Migraine Disorders , Humans , Estrogen Receptor alpha/genetics , Genetic Predisposition to Disease/genetics , Genotype , India , Migraine Disorders/genetics , Polymorphism, Genetic/genetics , South Asian People/genetics
8.
Neurol Res ; 45(3): 200-215, 2023 Mar.
Article in English | MEDLINE | ID: mdl-36197286

ABSTRACT

BACKGROUND: The lower threshold of neuronal hyperexcitability has been correlated with migraines for decades but as technology has progressed, it has now become conceivable to learn more about the migraine disease. Apart from the "cortical spreading depression" and "activation of the trigeminovascular system", inflammation has been increasingly recognized as a possible pathogenic process that may have the possibility to regulate the disease severity. Microglial cells, the prime candidate of the innate immune cells of central nervous tissue, has been associated with numerous diseases; including cancer, neurodegenerative disorders, and inflammatory disorders. AIM: In this review, we have attempted to link the dot of various microglial activation signaling pathways to enlighten the correlation between microglial involvement and the progression of migraine conditions. METHOD: A structured survey of research articles and review of the literature was done in the electronic databases of Google Scholar, PubMed, Springer, and Elsevier until 31 December 2021. RESULT & CONCLUSION: Of 1136 articles found initially and screening of 1047 records, 47 studies were included for the final review. This review concluded that inflammation and microglial overexpression as the prime candidate, plays an important role in the modulation of migraine and are responsible for the progression toward chronification. Therefore, this increases the possibility of preventing migraine development and chronification by blocking microglia overexpression.


Subject(s)
Microglia , Migraine Disorders , Humans , Microglia/metabolism , Migraine Disorders/metabolism , Inflammation/metabolism
9.
BMC Pediatr ; 22(1): 223, 2022 04 25.
Article in English | MEDLINE | ID: mdl-35468734

ABSTRACT

BACKGROUND: The risk of Congenital Heart Defects (CHD) is greatly influenced by variants within the genes involved in folate-homocysteine metabolism. Polymorphism in MTHFR (C677T and G1793A) and MS/MTR (A2756G) genes increases the risk of developing CHD risk, but results are controversial. Therefore, we conducted a case-control association pilot study followed by an up-dated meta-analysis with trial sequential analysis (TSA) to obtain more precise estimate of the associations of these two gene variants with the CHD risk. METHODS: For case-control study, we enrolled 50 CHD patients and 100 unrelated healthy controls. Genotyping was done by PCR-RFLP method and meta-analysis was performed by MetaGenyo online Statistical Analysis System software. For meta-analysis total number of individuals was as follows: for MTHFR C677T 3450 CHD patients and 4447 controls whereas for MS A2756G 697 CHD patients and 777 controls. RESULTS: Results of the original pilot study suggested lack of association for MTHFR C677T and MS A2756G polymorphism with risk of CHD whereas MTHFR G1793A was significantly associated with the disease. On performing meta-analysis, a significant association was observed with MTHFR C677T polymorphism but not with MS A2756G. Trial sequential Analysis also confirmed the sufficient sample size requirement for findings of meta-analysis. CONCLUSIONS: The results of the meta-analysis suggested a significant role of MTHFR in increased risk of CHD.


Subject(s)
Genetic Predisposition to Disease , Heart Defects, Congenital , 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase/genetics , Case-Control Studies , Heart Defects, Congenital/genetics , Heart Defects, Congenital/metabolism , Humans , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Pilot Projects , Polymorphism, Genetic , Risk Factors
10.
Clin Neurol Neurosurg ; 214: 107136, 2022 03.
Article in English | MEDLINE | ID: mdl-35101780

ABSTRACT

Migraine is indeed a neurovascular disorder for which several genes have been identified in this era of Genome-Wide Association Studies (GWAS) and neuroimaging studies have already revealed structural changes and different mechanisms that cause migraine, but the exact cause of this debilitating and disabling neurovascular disorder remained unclear. Low neuronal hyperexcitability ("the migrainous brain") is set and hindered by genetic and environmental factors, respectively. Migraine is also found to be associated with different diseases (co-morbidity). There is still a subject of contention: is migraine a disease of evolution or disease of pathology? This research review seeks to provide a brief overview on the genetics of disorders, structural abnormalities in the brain, CSD-like symptoms, and faulty Trigeminovascular System activation for migraine pain phenotype. This review briefly covered here to provide some ideas that may also be utilized in migraine research and to serve as motivation for future research.


Subject(s)
Genome-Wide Association Study , Migraine Disorders , Brain , Humans , Migraine Disorders/diagnosis , Migraine Disorders/genetics , Neuroimaging , Pain
11.
Sci Rep ; 12(1): 1860, 2022 02 03.
Article in English | MEDLINE | ID: mdl-35115548

ABSTRACT

Looking at the population's behavior by taking samples is quite uncertain due to its big and dynamic structure and unimaginable variability. All quantitative sampling approaches aim to draw a representative sample from the population so that the results of the studying samples can then be generalized back to the population. The probability of detecting a true effect of a study largely depends on the sample size and if taking small samples will give lowers statistical power, higher risk of missing a meaningful underlying difference. The probability of rejecting the null hypothesis i.e., finding significant difference using the sample largely depends upon the statistical power. There are a lot of online tools used for calculating the sample size, but none tell us about the availability of samples from single site in a fixed span. This study aims to provide an efficient calculation method for the availability of samples during a specific period of a research study which is an important question to be answered during the research study design. So, we have designed a spreadsheet-based sample availability calculator tool implemented in MS-Excel 2007.


Subject(s)
Algorithms , Epidemiologic Research Design , Hospitals , Patient Selection , Sample Size , Software , Humans , Population Surveillance , Time Factors
12.
Front Neurol ; 13: 1030940, 2022.
Article in English | MEDLINE | ID: mdl-36686511

ABSTRACT

Background: Headache disorders now represent a major public health problem globally. It is more prevalent in developing countries with the rising trends of headache disorders observed in young adults affecting their quality of life negatively. Very little information is available on the epidemiology of headache disorders in the Jammu Division of the north Indian population. Aim: The aim of the present study was to find out the prevalence of headache and its two major types, i.e., migraine and tension-type headache (TTH), in the population of the Jammu Division. Methods: The present study was conducted in two phases: (Phase I: face-to-face interview and Phase II: E-based sampling) and the sufferers of headaches were incorporated into the study based on the International Classification of Headache Disorder-3 (ICHD-3) criteria for a representative sample. Frequency distribution and mean ± standard deviation were used in descriptive statistics to describe the data sets, while a t-test, chi-square test, multiple logistic regression, and prevalence ratio were used in inferential statistics. Results: In the present study, a total of 3,148 patients were recruited, with an overall prevalence of headache of 53.84%, with a majority of females (38.18%) over males (15.66%). As regards the type of headache, migraine was found to be of the more prevalent (33.25%) type than the TTH (20.58%). Females suffering from migraine showed the highest prevalence (25.28%), in contrast to females suffering from the TTH (12.89%). Sociodemographic variables, such as gender [female; AOR = 2.46, 95% CI (2.12-2.85), p-value < 0.0001] and marital status [married; AOR: 1.46, 95% CI (1.11-1.92) p-value = 0.006], showed a significant association with the headache. Conclusion: The present study shows that the prevalence of headache is high in the Jammu Division of Jammu and Kashmir (J&K) India, with migraine being the highly prevalent type.

13.
Article in English | MEDLINE | ID: mdl-34956401

ABSTRACT

Colorectal cancer (CRC) is one of the globally prevalent and virulent types of cancer with a distinct alteration in chromosomes. Often, any alterations in the adenomatosis polyposis coli (APC), a tumor suppressor gene, and methylenetetrahydrofolate reductase (MTHFR) gene are related to surmise colorectal cancer significantly. In this study, we have investigated chromosomal and gene variants to discern a new-fangled gene and its expression in the southern populations of India by primarily spotting the screened APC and MTHFR variants in CRC patients. An equal number of CRC patients and healthy control subjects (n = 65) were evaluated to observe a chromosomal alteration in the concerted and singular manner for APC and MTHFR genotypes using standard protocols. The increasing prognosis was observed in persons with higher alcoholism and smoking (P < 0.05) with frequent alterations in chromosomes 1, 5, 12, 13, 15, 17, 18, 21, and 22. The APC Asp 1822Val and MTHFR C677T genotypes provided significant results, while the variant alleles of this polymorphism were linked with an elevated risk of CRC. Chromosomal alterations can be the major cause in inducing carcinogenic outcomes in CRCs and can drive to extreme pathological states.


Subject(s)
Adenomatous Polyposis Coli Protein/genetics , Colorectal Neoplasms , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Colorectal Neoplasms/genetics , Genetic Predisposition to Disease , Genotype , Humans , Polymorphism, Genetic , Risk Factors
14.
BMC Cardiovasc Disord ; 20(1): 340, 2020 07 18.
Article in English | MEDLINE | ID: mdl-32682401

ABSTRACT

BACKGROUND: Coronary artery disease (CAD) is a complex disease resulting from the cumulative and interactive effects of large number of genes along with environmental exposure. Therefore, the present study was envisaged as an effort to study the association of candidate genes ESR1 (rs2234693 and rs9340799), CETP (rs708272), MTHFR (rs1801133 and rs2274976) and MS (rs185087) polymorphisms with the risk of CAD, targeting the populations of Jammu (JandK). METHOD: A total of 400 confirmed CAD patients and 400 healthy controls were enrolled for the present study. Genotyping was done by polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP). RESULTS: ESR1 gene (rs9340799) polymorphism was found to be associated with CAD in all the genetic models. The haplotype analysis of ESR1 (rs2234693 and rs9340799) gene revealed that C-G haplotype was conferring approximately 5-fold risk and T-A haplotype was adding 1.4-fold risk towards the disease. 'T' allele of MTHFR rs1801133 SNP was observed to be responsible for development of CAD in our study population (p < 0.0001). In case of MTHFR (rs1801133 and rs2274976) gene, the haplotype T-G was observed to confer 4.7-fold risk towards CAD whereas haplotype C-G provided nearly a 1.7 fold protection towards development of CAD. For MS gene, rs185087 was also found to be associated with CAD in a co-dominant (p = 0.003 and p = 0.03), dominant (p = 0.001) and allelic models (p = 0.001). The gene-gene interaction revealed strong epistasis between single nucleotide polymorphisms (SNPs), ESR1 rs9340799 and MTHFR rs2274976. Furthermore, the dendrogram for gene-environment dataset indicated moderately synergistic interaction between CETP rs708272 and physical inactivity. CONCLUSION: In the study under reference, a significant association of ESR1-XbaI (rs9340799), MTHFR C677T (rs1801133) and MS A2756G (rs185087) gene polymorphisms with the susceptibility of CAD in the population of Jammu region (JandK) has been observed.


Subject(s)
5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase/genetics , Cholesterol Ester Transfer Proteins/genetics , Coronary Artery Disease/genetics , Estrogen Receptor alpha/genetics , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Polymorphism, Single Nucleotide , Case-Control Studies , Coronary Artery Disease/diagnostic imaging , Gene Frequency , Genetic Association Studies , Genetic Predisposition to Disease , Haplotypes , Humans , India , Risk Assessment , Risk Factors
15.
Front Genet ; 11: 415, 2020.
Article in English | MEDLINE | ID: mdl-32425985

ABSTRACT

Rare diseases (RDs) are the clinical conditions affecting a few percentage of individuals in a general population compared to other diseases. Limited clinical information and a lack of reliable epidemiological data make their timely diagnosis and therapeutic management difficult. Emerging Next-Generation DNA Sequencing technologies have enhanced our horizons on patho-physiological understanding of many of the RDs and ushered us into an era of diagnostic and therapeutic research related to this ignored health challenge. Unfortunately, relevant research is meager in developing countries which lack a reliable estimate of the exact burden of most of the RDs. India is to be considered as the "Pandora's Box of genetic disorders." Owing to its huge population heterogeneity and high inbreeding or endogamy rates, a higher burden of rare recessive genetic diseases is expected and supported by the literature findings that endogamy is highly detrimental to health as it enhances the degree of homozygosity of recessive alleles in the general population. The population of a low resource region Jammu and Kashmir (J&K) - India, is highly inbred. Some of its population groups variably practice consanguinity. In context with the region's typical geographical topography, highly inbred population structure and unique but heterogeneous gene pool, a huge burden of known and uncharacterized genetic disorders is expected. Unfortunately, many suspected cases of genetic disorders remain undiagnosed or misdiagnosed due to lack of appropriate clinical as well as diagnostic resources in the region, causing patients to face a huge psycho-socio-economic crisis and many a time suffer life-long with their ailment. In this review, the major challenges associated with RDs are highlighted in general and an account on the methods that can be adopted for conducting fruitful molecular genetic studies in genetically vulnerable and low resource regions is also provided, with an example of a region like J&K - India.

16.
Sci Rep ; 8(1): 851, 2018 01 16.
Article in English | MEDLINE | ID: mdl-29339819

ABSTRACT

Jammu and Kashmir (J&K), the Northern most State of India, has been under-represented or altogether absent in most of the phylogenetic studies carried out in literature, despite its strategic location in the Himalayan region. Nonetheless, this region may have acted as a corridor to various migrations to and from mainland India, Eurasia or northeast Asia. The belief goes that most of the migrations post-late-Pleistocene were mainly male dominated, primarily associated with population invasions, where female migration may thus have been limited. To evaluate female-centered migration patterns in the region, we sequenced 83 complete mitochondrial genomes of unrelated individuals belonging to different ethnic groups from the state. We observed a high diversity in the studied maternal lineages, identifying 19 new maternal sub-haplogroups (HGs). High maternal diversity and our phylogenetic analyses suggest that the migrations post-Pleistocene were not strictly paternal, as described in the literature. These preliminary observations highlight the need to carry out an extensive study of the endogamous populations of the region to unravel many facts and find links in the peopling of India.


Subject(s)
Human Migration , DNA, Mitochondrial/chemistry , DNA, Mitochondrial/classification , DNA, Mitochondrial/metabolism , Female , Genetic Variation , Haplotypes , Humans , India , Male , Mitochondria/genetics , Phylogeny
17.
Indian Heart J ; 68(3): 421-30, 2016.
Article in English | MEDLINE | ID: mdl-27316508

ABSTRACT

AIM: Potent risk factors at both genetic and non-genetic levels are accountable for susceptibility and instigation of different cardiovascular phenotypes. Recently, homocysteine is being identified as an important predictor for cardiovascular diseases. Homocysteine remethylation plays a key role in the synthesis of methionine and S-adenosine methionine. Methylenetetrahydrofolate reductase (MTHFR) and methionine synthase (MTR) genes are known to regulate the homocysteine remethylation reaction and higher homocysteine level is significantly associated with diverse cardiovascular phenotypes. In this context, we aimed to carry out a study on the association of MTHFR (C677T) and MTR (A2756G) gene polymorphism with CVD in population of Jammu region of J&K state. MATERIALS AND METHODS: A total of 435 individuals were enrolled (195 CVD patients and 240 controls) for the case-control study. Genotyping of MTHFR C677T and MTR A2756G gene polymorphism was done by PCR-RFLP technique. Biochemical parameters were estimated by biochemical analyser. RESULTS: Metabolic variables such as serum LDL-C, TC and TG were significantly higher in patients (p<0.0001), whereas serum HDL-C was higher in controls. Majority of the patients were having history of hypertension (57.44%; p<0.0001) as a concomitant condition. The evaluation of genetic association showed that, MTHFR C6877T (OR: 8.89, 95% CI: 2.01-39.40) and MTR A2756G (OR: 1.48, 95% CI: 1.09-2.00) polymorphisms associated with higher risk of CVD. CONCLUSION: The present study reveals significant differences in nongenetic variables among patients and control as well as association of gene polymorphisms with CVD risk.


Subject(s)
5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase/genetics , Cardiovascular Diseases/genetics , DNA/genetics , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Polymorphism, Genetic , 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase/metabolism , Adult , Biomarkers/metabolism , Cardiovascular Diseases/metabolism , Female , Genotype , Humans , Male , Methylenetetrahydrofolate Reductase (NADPH2)/metabolism , Middle Aged , Polymerase Chain Reaction , Risk Factors
18.
Sci Rep ; 6: 27684, 2016 06 13.
Article in English | MEDLINE | ID: mdl-27291587

ABSTRACT

We report identification and genetic characterization of a rare skeletal disorder that remained unidentified for decades in a village of Jammu and Kashmir, India. The population residing in this region is highly consanguineous and a lack of understanding of the disorder has hindered clinical management and genetic counseling for the many affected individuals in the region. We collected familial information and identified two large extended multiplex pedigrees displaying apparent autosomal recessive inheritance of an uncharacterized skeletal dysplasia. Whole exome sequencing (WES) in members of one pedigree revealed a rare mutation in WISP3:c.156C > A (NP_003871.1:p.Cys52Ter), that perfectly segregated with the disease in the family. To our surprise, Sanger sequencing the WISP3 gene in the second family identified a distinct, novel splice site mutation c.643 + 1G > A, that perfectly segregated with the disease. Combining our next generation sequencing data with careful clinical documentation (familial histories, genetic data, clinical and radiological findings), we have diagnosed the families with Progressive Pseudorheumatoid Dysplasia (PPD). Our results underscore the utility of WES in arriving at definitive diagnoses for rare skeletal dysplasias. This genetic characterization will aid in genetic counseling and management, critically required to curb this rare disorder in the families.


Subject(s)
CCN Intercellular Signaling Proteins/genetics , Exome , Joint Diseases/congenital , Adult , Child , Consanguinity , Female , Genes, Recessive , High-Throughput Nucleotide Sequencing , Humans , India , Joint Diseases/ethnology , Joint Diseases/genetics , Male , Middle Aged , Mutation , Pedigree , Phenotype , Young Adult
20.
Asian J Transfus Sci ; 4(2): 99-101, 2010 Jul.
Article in English | MEDLINE | ID: mdl-20859508

ABSTRACT

BACKGROUND: Anemias are the blood disorders characterized by reduction in the number of circulating red blood cells, the amount of hemoglobin, or the volume of packed red cells in blood. Chromosomal aberrations have often been reported from the bone marrow as well as cultured lymphocytes of the anemic patients. AIMS: The aims of the study were to find out the commonest type of anemia occurring in the population of Jammu, India and to find out the chromosomal changes involved in the disorder. MATERIAL AND METHODS: Present study has been carried out on the bone marrow samples from 53 clinically diagnosed anemic patients. Cytogenetic study was carried out on slides prepared from these samples. Noncytogenetic factors like age, sex, religion, blood groups, family history of anemia, socioeconomic status, etc. have also been included in the study. RESULTS: Megaloblastic anemia was found to be the commonest type of anemia. Centromere stretching, chromatid breaks, gaps, and elongation of chromosomes were recorded in patients with megaloblastic anemia and combined deficiency anemia. However, structural changes and numerical changes were totally absent. CONCLUSION: The commonest anemia among the people of Jammu region is megaloblastic anemia and its prevalence is increasing every year. Also, megaloblastic anemia is always associated with reversible cytogenetic changes.

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