Rehman, Ateequr

Comparison of the bacterial composition and structure in symptomatic and asymptomatic endodontic infections associated with root-filled teeth using pyrosequencing by Annette C Anderson( )

2 editions published in 2013 in English and held by 3 WorldCat member libraries worldwide

Abstract: Residual microorganisms and/or re-infections are a major cause for root canal therapy failure. Understanding of the bacterial content could improve treatment protocols. Fifty samples from 25 symptomatic and 25 asymptomatic previously root-filled teeth were collected from Sudanese patients with periradicular lesions. Amplified 16S rRNA gene (V1-V2) variable regions were subjected to pyrosequencing (FLX 454) to determine the bacterial profile. Obtained quality-controlled sequences from forty samples were classified into 741 operational taxonomic units (OTUs) at 3% dissimilarity, 525 at 5% dissimilarity and 297 at 10% dissimilarity, approximately corresponding to species-, genus- and class levels. The most abundant phyla were: Firmicutes (29.9%), Proteobacteria (26.1%), Actinobacteria (22.72%), Bacteroidetes (13.31%) and Fusobacteria (4.55%). Symptomatic patients had more Firmicutes and Fusobacteria than asymptomatic patients, while asymptomatic patients showed more Proteobacteria and Actinobacteria. Interaction of disease status and age was observed by two-way ANOSIM. Canonical correspondence analysis for age, tooth restoration and disease status showed a correlation of disease status with the composition and prevalence of different members of the microbial community. The pyrosequencing analysis revealed a distinctly higher diversity of the microbiota compared to earlier reports. The comparison of symptomatic and asymptomatic patients showed a clear association of the composition of the bacterial community with the presence and absence of symptoms in conjunction with the patients' age

Effects of probiotics and antibiotics on the intestinal homeostasis in a computer controlled model of the large intestine by Ateequr Rehman( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Comparative analysis of amplicon and metagenomic sequencing methods reveals key features in the evolution of animal metaorganisms by Philipp Rausch( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

The antibiotic resistome and microbiota landscape of refugees from Syria, Iraq and Afghanistan in Germany by Robert Häsler( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Exposure to the gut microbiota drives distinct methylome and transcriptome changes in intestinal epithelial cells during postnatal development by Wei-Hung Pan( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Characteristic changes in microbial community composition and expression of innate immune genes in acute appendicitis( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide