Publications by authors named "Irina Y Karpova"

Article Synopsis
  • Crohn's disease is linked to imbalances in gut bacteria, specifically with an increase in certain types of E. coli, and more research is needed to understand their role.
  • A metagenomic study of Crohn's patients showed that the gut microbiomes varied significantly between individuals, revealing high genetic diversity in E. coli strains.
  • The findings suggest that understanding the genetic diversity of these bacteria can help develop better prevention and treatment options for Crohn's disease.
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Background: Escherichia coli (E. coli) has been increasingly implicated in the pathogenesis of Crohn's disease (CD). The phylogeny of E.

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Background: The switch from oxidative phosphorylation to glycolysis in proliferating cancer cells, even under aerobic conditions, has been shown first in 1926 by Otto Warburg. Today this phenomenon is known as the "Warburg effect" and recognized as a hallmark of cancer. The metabolic shift to glycolysis is associated with the alterations in signaling pathways involved in energy metabolism, including glucose uptake and fermentation, and regulation of mitochondrial functions.

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Background: Colorectal cancer (CRC) is one of the most common malignant tumors worldwide. CRC molecular pathogenesis is heterogeneous and may be followed by mutations in oncogenes and tumor suppressor genes, chromosomal and microsatellite instability, alternative splicing alterations, hypermethylation of CpG islands, oxidative stress, impairment of different signaling pathways and energy metabolism. In the present work, we have studied the alterations of alternative splicing patterns of genes related to energy metabolism in CRC.

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Chlamydia are obligate intracellular parasites of humans and animals that cause a wide range of acute and chronic infections. To elucidate the genetic basis of chlamydial parasitism, several approaches for making genetic modifications to Chlamydia have recently been reported. However, the lack of the available methods for the fast and effective selection of genetically modified bacteria restricts the application of genetic tools.

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Article Synopsis
  • Tuberculosis (TB) is a global health issue, especially with rising drug-resistant strains and connections to HIV, yet there's a lack of a centralized resource linking TB genome data with geographic and clinical information.
  • The Genome-wide Mycobacterium tuberculosis Variation (GMTV) database compiles genome variations from M. tuberculosis strains in Russia, featuring data on drug resistance, clinical outcomes, and more, accessible through an online browser.
  • GMTV helps track changes in TB strains across different regions, supports research on drug resistance and clinical effects, and enhances comparisons of M. tuberculosis genomes.
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Article Synopsis
  • The study focuses on the Mycobacterium tuberculosis (MTB) Beijing family, specifically the B0/W148 group found in Russia, which is known for being widespread, hypervirulent, and drug-resistant.
  • Researchers sequenced four clinical isolates from this group and compared their genomes to the W-148 strain to identify significant genomic features.
  • They discovered two large genomic inversions in the B0/W148 strains, suggesting that such rearrangements in MTB are more common than previously thought, highlighting the need for further research into these genetic changes.
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The microbial community of the human gut has a crucial role in sustaining host homeostasis. High-throughput DNA sequencing has delineated the structural and functional configurations of gut metagenomes in world populations. The microbiota of the Russian population is of particular interest to researchers, because Russia encompasses a uniquely wide range of environmental conditions and ethnogeographical cohorts.

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Here we present a draft genome of Pseudomonas stutzeri strain KOS6. This strain was isolated from industrial hydrocarbon sludge as a diazotrophic microorganism. It represents one of the major parts of the culturable community of the waste and has potential importance for phytoremediation technology.

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MALINA is a web service for bioinformatic analysis of whole-genome metagenomic data obtained from human gut microbiota sequencing. As input data, it accepts metagenomic reads of various sequencing technologies, including long reads (such as Sanger and 454 sequencing) and next-generation (including SOLiD and Illumina). It is the first metagenomic web service that is capable of processing SOLiD color-space reads, to authors' knowledge.

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