30 research outputs found
PP-055 Detecting the genotypes of Helicobacter pylori in the development of gastric carcinoma subjects in Andhra Pradesh population
Association of Helicobacter pylori restriction endonuclease-replacing gene, hrgA with overt gastrointestinal diseases
Phylogenetic analysis, based on EPIYA repeats in the cagA gene of Indian Helicobacter pylori, and the implications of sequence variation in tyrosine phosphorylation motifs on determining the clinical outcome
The population of India harbors one of the world’s most highly diverse gene pools, owing to the influx of successive waves of immigrants over regular periods in time. Several phylogenetic studies involving mitochondrial DNA and Y chromosomal variation have demonstrated Europeans to have been the first settlers in India. Nevertheless, certain controversy exists, due to the support given to the thesis that colonization was by the Austro-Asiatic group, prior to the Europeans. Thus, the aim was to investigate pre-historic colonization of India by anatomically modern humans, using conserved stretches of five amino acid (EPIYA) sequences in the cagA gene of Helicobacter pylori. Simultaneously, the existence of a pathogenic relationship of tyrosine phosphorylation motifs (TPMs), in 32 H. pylori strains isolated from subjects with several forms of gastric diseases, was also explored. High resolution sequence analysis of the above described genes was performed. The nucleotide sequences obtained were translated into amino acids using MEGA (version 4.0) software for EPIYA. An MJ-Network was constructed for obtaining TPM haplotypes by using NETWORK (version 4.5) software. The findings of the study suggest that Indian H. pylori strains share a common ancestry with Europeans. No specific association of haplotypes with the outcome of disease was revealed through additional network analysis of TPMs
Unusual case of stroke in young
Thromboembolism is a rare extra-intestinal manifestation of inflammatory bowel disease. Thromboembolic event involving CNS in a case with inflammatory bowel disease (IBD) is very rare & leads to increase in mortality. The mortality of ulcerative colitis with thromboembolic complications have been reported to reach 25 percent. Here, we present a case of a young adult with a two years old history of ulcerative colitis with a sudden onset of stroke with no other associated co-morbidities for cerebrovascular disease. [J Med Allied Sci 2017; 7(1.000): 64-66
Association of Helicobacter pylori restriction endonuclease-replacing gene, hrgA with overt gastrointestinal diseases
BACKGROUND and AIM: Helicobacter pylori has been proven to be responsible for causing various gastrointestinal disorders including gastric adenocarcinoma. Several genes of pathogen (the genes of the cag-PAI, vacA, iceA, and babA) either in combination or independently have been reported to significantly increase the risk of ulceration/gastric carcinoma, with the cagA gene having the strongest predictive value. Pursuit to identify new genes which could serve as a marker of overt disease progression, lead to the discovery of hrgA gene. METHODS: Fifty-six indigenous strains of H. pylori from subjects with various gastric disorder were screened to assess the status of hrgA gene along with the cagA gene using simple polymerase chain reaction using specific oligonucleotide primers. Post-amplification, amplicons were subjected for sequencing to identify any strain specific variations in sequences from the H. pylori isolated from different disease manifestations. Histopathological analysis was done to ascertain any significant change in the histological scores of subjects infected with cagA+/hrgA+ and cagA-/hrg+ strains. RESULTS: All the 56 (100%) subjects amplified with the oligonucleotide primers specific to hrgA gene, whereas 81.71% subjects showed the presence of cagA gene. Sequencing of the amplimers showed 99% homology. Histology of the cagA+/hrgA+ and cagA-/hrg+ subjects did not show any significant difference. CONCLUSION: hrgA gene of Helicobacter pylori is not a ideal surrogate marker for identifying individuals with higher risk of developing overt gastro-duodenal diseases such as neoplasia of the stomach
Characterization of hepatic progenitors from human fetal liver during second trimester
AIM: To enrich hepatic progenitors using epithelial cell adhesion molecule (EpCAM) as a marker from human fetal liver and investigate the expression of human leukocyte antigen (HLA) and their markers associated with hepatic progenitor cells
A latest and promising approach for prediction of viral load in hepatitis B virus infected patients
Introduction: Designing a rapid, reliable and sensitive assay for
detection of hepatitis B virus (HBV) variants by real-time PCR is
challenging at best. A recent approach for quantifying the viral load
using a sensitive fluorescent principle was brushed in this study.
Materials and Methods : A total of 250 samples were collected from the
outpatient unit, CLRD. Complete Human HBVDNA sequences (n = 944) were
selected from the National Centre for Biotechnology Information (NCBI),
primers and probes were designed and synthesized from the core,
surface, and x region. Real-time based quantification was carried out
using a standard kit and in-house generated standards and RT-PCR
protocols. Results and Discussion: The standard calibration curve was
generated by using serial dilution 10 2 to 10 8 . The calibration curve
was linear in a range from 10 2 to 10 8 copies/ml, with an R2 value of
0.999. Reproducibility as measured by dual testing of triplicates of
serum samples was acceptable, with coefficients of variation at 6.5%,
7.5%, and 10.5%. Our results showed that amplification performance was
good in the case of the x-region-based design (98%). Out of 100
negative samples screened by enzyme linked immunosorbent assay and the
standard RT-PCR kit, one sample was detected as positive with the
in-house developed RT-PCR assay, the positivity of the sample was
confirmed by sequencing the amplified product, NCBI accession EU684022.
Conclusion: This assay is reproducible showing limited inter- and
intra-assay variability. We demonstrate that the results of our assay
correlated well with the standard kit for the HBV viral load monitor
T1774 Production of C- Peptide and Pancreatic Gene Expression Analysis in Human Fetal Liver Progenitor Cells
Primary sclerosing cholangitis and Biliary cirrhosis associated with Ulcerative colitis
Primary sclerosing cholangitis and Ulcerative colitis are caused by progressive inflammation of the bile duct and large intestine respectively. The existence of any plausible association between Primary sclerosing cholangitis and Ulcerative colitis remains highly elusive. Little is known about the incidence and prevalence of primary sclerosing cholangitis with concomitant Ulcerative colitis in the Indian subcontinent. We report a case of Primary sclerosing cholangitis with long standing Ulcerative colitis which later also developed Primary biliary cirrhosis