Special Issue "Virulence Potential and Rapid Screening of Enteric Pathogens from the Environment"

A special issue of Pathogens (ISSN 2076-0817).

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 1302

Special Issue Editor

Dr. Nityananda Chowdhury
E-Mail Website
Guest Editor
Department of Oral Health Sciences, Medical University of South Carolina, 173 Ashley Ave, Charleston, SC 29425, USA
Interests: host-pathogen interactions; cellular Microbiology; bacterial virulence and secretion systems; biology of bacterial persister/dormant cells; antibiotic persistence and resistance; bacterial evolution and pathogenicity; biofilm; gene regulation; functional genomics

Special Issue Information

Dear Colleagues,

Enteric pathogens are associated with mild to severe forms of diarrheal diseases. Different kinds of exotoxins including enterotoxins and cytotoxins produced by various entric bacterial pathogens are the leading cause of the disease. For example, cholera toxin, heat-labile or heat-stable toxin, and shiga toxin are the major virulence factors of toxigeneic Vibrio cholerae, enterotoxigenic Escherichia coli, and Shiga toxin producing E. coli and Shigella species, respectively. Bacterial secretion systems especially Type 3 and Type 6 are novel virulence detreminants as well. Colonization and/or invasion of host epithelial cells are prerequisite to virulence, and each bacterium expresses unique colonization factor(s) and metabolic enzymes to overcome the mucus barriers of the intestine. Many pathogens, like V. cholerae employs sialidase/neuraminidas to cleave the terminal silaic from host glycoconjugates/mucin to generate carbon and energy for survival. Contaminated water and foods are major sources of infection by the enteric pathigens. Rapid and effective methods of screening and identification for these pathogens from the suspected environments/samples are thus very important. There are many methods including genetic (PCR, multilocus sequence typing), biochemical, and immunological are currently in use, however, many of them are expensive as they need sophisticated equipments like sequencer, thermal cycler etc, time consuming, and/or have poor accuracy and reproducibility. Therefore, development of rapid, cost-effective, and easy to use techniques are still needed for accurate and definitive identification of enteric pathogens from the environment. Moreover, methods for the identification of dormant bacteria which are tolerant to almost all conventional antibiotics and responsible for recalcitrant of infection are lacking.

To make substantial progress in better understanding the virulence potential or to dscover new virulence detreminats and developing rapid screening methods for enteric pathogens, it is highly encouraged to submit original research Articles, Communications, or Reviews in this special issue of Pathogens. All submitted papers will undergo a standard independent peer-review process.  

Dr. Nityannada Chowdhury
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Pathogens is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • Enteric Bacteria
  • Pathogens
  • Virulence
  • Secretion system
  • Colonization
  • Identification
  • Screening Method
  • Dormant bacteria

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:


Simultaneous Quantification of Vibrio metoecus and Vibrio cholerae with Its O1 Serogroup and Toxigenic Subpopulations in Environmental Reservoirs
Pathogens 2020, 9(12), 1053; https://doi.org/10.3390/pathogens9121053 - 16 Dec 2020
Cited by 4 | Viewed by 881
Vibrio metoecus is a recently described aquatic bacterium and opportunistic pathogen, closely related to and often coexisting with Vibrio cholerae. To study the relative abundance and population dynamics of both species in aquatic environments of cholera-endemic and cholera-free regions, we developed a multiplex [...] Read more.
Vibrio metoecus is a recently described aquatic bacterium and opportunistic pathogen, closely related to and often coexisting with Vibrio cholerae. To study the relative abundance and population dynamics of both species in aquatic environments of cholera-endemic and cholera-free regions, we developed a multiplex qPCR assay allowing simultaneous quantification of total V. metoecus and V. cholerae (including toxigenic and O1 serogroup) cells. The presence of V. metoecus was restricted to samples from regions that are not endemic for cholera, where it was found at 20% of the abundance of V. cholerae. In this environment, non-toxigenic O1 serogroup V. cholerae represents almost one-fifth of the total V. cholerae population. In contrast, toxigenic O1 serogroup V. cholerae was also present in low abundance on the coast of cholera-endemic regions, but sustained in relatively high proportions throughout the year in inland waters. The majority of cells from both Vibrio species were recovered from particles rather than free-living, indicating a potential preference for attached versus planktonic lifestyles. This research further elucidates the population dynamics underpinning V. cholerae and its closest relative in cholera-endemic and non-endemic regions through culture-independent quantification from environmental samples. Full article
Show Figures

Figure 1

Back to TopTop