Skip to main content

Fluoroquinolone Resistance in Relation to Phylogenetic Background and Iron Uptake Associated Virulence Profile among Urinary Escherichia coli Isolates from HIV and Non-HIV Patients | Chapter 9 | Innovations in Medicine and Medical Research Vol.2

Introduction: Urinary tract infection is a major cause of morbidity among HIV patients and is more often underestimated in developing countries. Urinary Escherichia coli isolated from HIV and non-HIV patients in South India were analyzed to determine the virulence profile and phylogenetic distribution and their correlation with fluoroquinolone (FQ) resistance. Methods: This study aimed to assess the difference in the incidence of iron uptake associated virulence genes among urinary E. coli isolated from HIV (n= 76) and non-HIV antenatal patients (n=42). We compared the incidence of virulence associated genes (VAGs) among the E. coli isolates in relation to FQ resistance, phylogeny and host immunocompromise.  Results: fyuA was higher among the isolates from HIV than from non-HIV patients (P=0.00024).              E. coli isolates from HIV, non-HIV patients primarily belonged to the phylogroups D and B2 respectively. Q and FQ resistance were higher among isolates from HIV patients compared to nonHIV patients (P=0.000414, P<0.0001 respectively). PhylogroupB2 strains were predominant among the FQ susceptible than FQ-resistant strains (P=0.000652). fyuA and iutA was higher among the Qresistant isolates than their susceptible counterparts (P<0.0001; P=0.000132). FQ resistant isolates harboured fyuA, iutA than the susceptible isolates (P=0.0063; P=0.000478). Hly+ phenotype was significantly associated with FQ-susceptible isolates (P=0.003253).  Discussion: Our results establish the relative predominance of non-hemolytic, fyuA+, Q, FQ resistant E. coli isolates primarily of phylogroup-D among the HIV patients and there by suggests that non-B2 strains with lower virulence but with increased antibiotic resistance establish infection in HIV patients.

Author(s) Details

Dr. Kesavaram Padmavathy
Department of Microbiology, Research Laboratory for Oral and Systemic Health, Sree Balaji Dental College and Hospital, Bharath Institute of Higher Education and Research, Chennai, India and Department of Microbiology, Dr. ALM PGIBMS, University of Madras, Chennai, India.

Dr. Krishnan Padma
Department of Microbiology, Dr. ALM PGIBMS, University of Madras, Chennai, India.

Dr. Sikhamani Rajasekaran
Government Hospital of Thoracic Medicine, Chennai, India.

View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/161

Labels:

Comments

Post a Comment

Popular posts from this blog

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefi...
Post a Comment
Read more

Risk Factors for Postpartum Psychiatric Disorders. A Review of the Literature | Chapter 8 | New Visions in Medicine and Medical Science Vol. 4

  Objective: The aim of this study was to explore the risk factors for the development of postpartum psychiatric disorders through international literature. Materials and Methods: Throughout many articles in PubMed, Google scholar and PsycInfo, a great amount of recent data was gathered to identify the disorders that are most common as well as their risk factors. Results: After childbirth, most commonly women experience postpartum depression, anxiety disorders, post-traumatic stress disorder and postpartum psychosis. All the disorders have many similar risk-factors with the main one being preexisting psychiatric disorder and many similar symptoms too. Conclusions: Women after childbirth are at risk of experience many psychiatric disorders, such as postpartum distress, postpartum post traumatic stress disorder and even more rarely postpartum psychosis. It is important to provide comprehensive support to ensure the well-being of both the mother and the infant and this will b...
Post a Comment
Read more

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cel...
Post a Comment
Read more