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Articles by Showket Hussain
Total Records ( 3 ) for Showket Hussain
  M. Kausar Neyaz , R. Suresh Kumar , Showket Hussain , Samar H. Naqvi , Indu Kohaar , Nisha Thakur , Veena Kashyap , Bhudev C. Das , Syed Akhtar Husain and Mausumi Bharadwaj
  As current evidence suggests the involvement of epigenetic modification of tumour suppressor genes in human cancer, we investigated the aberrant promoter methylation of FHIT and RASSF1A genes in human papillomavirus (HPV)-mediated cervical cancer in Indian women. We analysed 60 cervical cancer tissue biopsies of different clinical stage and histological grading and 23 healthy control samples with normal cervical cytology. Methylation-specific polymerase chain reaction (MSP) was performed to analyse the methylation status of FHIT and RASSF1A genes and confirmed by sequencing. Both patients and controls were screened for HPV infection and 98% of the HPV-infected cases showed positivity for HPV type 16. Aberrant promoter methylation of the FHIT gene was found in 28.3% (17/60) of cases and of the RASSF1A gene in 35.0% (21/60) of cases; promoter methylation of both the genes was found in 13.3% (8/60) of cervical cancer cases. Methylation was significantly (p<0.01) associated with the cervical cancer cases compared with controls. None of the 23 controls was found to be methylated in either of these genes. This is the first study indicating a correlation between the promoter methylation of FHIT and RASSF1A genes and the clinical stage and histological grading of cervical carcinoma in Indian women. Future studies are underway to examine the practical implications of these findings for use as a biomarker.
  Nisha Thakur , Showket Hussain , Indu Kohaar , Rubina Tabassum , Vilas Nasare , Pratibha Tiwari , Swaraj Batra , Suresh Bhambhani , Bhudev C. Das , Seemi Farhat Basir , Dwaipayan Bharadwaj and Mausumi Bharadwaj
  The potential association of single nucleotide polymorphisms (SNPs) (G870A and G1722C) of CCND1 with susceptibility to cervical cancer was investigated. The study included 200 cervical cancer cases along with an equal number of healthy controls. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis and direct sequencing were employed for genotyping. We found that women carrying the 870AA genotype have a 2.49-fold increased risk for the development of cervical cancer (odds ratio (OR) 2.49; 95% confidence interval (CI) 1.51-4.09; p = 0.0004) compared with GG+GA genotypes. For the 1722 locus, the frequency of the polymorphic 'C' allele was strongly associated with a reduced risk of cervical cancer (p = 0.019; OR 0.71; 95% CI 0.54-0.94). Our data suggest that CCND1 G870A polymorphism could act as a risk factor for the development of cervical cancer. And G1722C polymorphism may play a protective role against the development of human papillomavirus-associated cervical cancer among Indian women.
  Indu Kohaar , J Kumar , Nisha Thakur , Showket Hussain , Md. Kausar Niyaz , Bhudev C. Das , Shantanu Sengupta and Mausumi Bharadwaj
  Human papillomavirus is considered to be a major aetiological factor but is not sufficient for the development of cervical cancer. Other host factors, including altered homocysteine levels, a functional marker of folate inadequacy, might contribute to the carcinogenic process. Herein we investigated the potential association of homocysteine levels and MTHFR polymorphisms with cervical cancer in 203 histologically confirmed cases including 39 precancer cases and 231 healthy controls with normal cervical cytology. Both patients and controls were screened for human papillomavirus infection. We found that homocysteine and consequently cysteine levels were significantly higher in cases, both cancer and precancer (p<0.001) than controls. However, polymorphisms in the MTHFR gene (677C/T and 1298A/C) that are reported to modulate homocysteine levels were not associated with disease. Thus, our study establishes an association of total homocysteine levels with the risk of developing carcinoma of the uterine cervix.
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