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| Disease and death caused by diarrhoea is a global problem, but especially prevalent in developing countries. Common enteric pathogenic bacteria include Vibrios, diarrogenic Escherichia coli, Shigella, Salmonella etc. The family Vibrionaceae hosts various human and marine pathogens. Vibrio cholerae and Vibrio parahaemolyticus are the most pathogenic that pose serious health problems and economic loss to the mankind. The frequent outbreaks of cholera in Kerala (in the extreme south of India) have been reported in the past. Hence the study of environmental strains with respect to the virulence, molecular mechanism of multiple drug resistance and detection methods for the toxigenic strains becomes necessary. Most microbial infections that cause significant morbidity and mortality to the humans are due to the development of a recalcitrant biofilm structure by the microbes |
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When compared to their planktonic counterparts, microbes in these biofilm mode exhibit significant difference in gene expression and physiology and are highly resistant to antimicrobial agents and host immune response making the infections difficult to treat. Their resilience has been related to physiology and protection by the EPS slime matrix that they produce. As biofilm formation plays a crucial role in the virulence of pathogenic microbes, it can be considered as a potential drug target. We have planned to identify potential targeting sites for inhibiting biofilm formation in the pathogenic members of Vibrionaceae. The spatio-temporal aspect of biofilm development underlies several key research questions that remain to be elucidated. Another area we are focusing on is bioprospecting bacteria isolated from the Arctic. |
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