Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.

Trifluoperazine, a known calmodulin antagonist, belongs to a class of phenothiazine compounds that have multiple sites of action in mycobacteria including lipid synthesis, DNA processes, protein synthesis and respiration. The objective of this study is to evaluate the potential of TFP to be used as...

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Autores principales:	Meeta J Advani, Imran Siddiqui, Pawan Sharma, Hemalatha Reddy
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/923df8ab87594f7399a69bc1291ded57
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spelling	oai:doaj.org-article:923df8ab87594f7399a69bc1291ded572021-11-18T07:06:51ZActivity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.1932-620310.1371/journal.pone.0044245https://doaj.org/article/923df8ab87594f7399a69bc1291ded572012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22952939/?tool=EBIhttps://doaj.org/toc/1932-6203Trifluoperazine, a known calmodulin antagonist, belongs to a class of phenothiazine compounds that have multiple sites of action in mycobacteria including lipid synthesis, DNA processes, protein synthesis and respiration. The objective of this study is to evaluate the potential of TFP to be used as a lead molecule for development of novel TB drugs by showing its efficacy on multiple drug resistant (MDR) Mycobacterium tuberculosis (M.tb) and non-replicating dormant M.tb. Wild type and MDR M.tb were treated with TFP under different growth conditions of stress like low pH, starvation, presence of nitric oxide and in THP-1 infection model. Perturbation in growth kinetics of bacilli at different concentrations of TFP was checked to determine the MIC of TFP for active as well as dormant bacilli. Results show that TFP is able to significantly reduce the actively replicating as well as non-replicating bacillary load. It has also shown inhibitory effect on the growth of MDR M.tb. TFP has shown enhanced activity against intracellular bacilli, presumably because phenothiazines are known to get accumulated in macrophages. This concentration was, otherwise, found to be non-toxic to macrophage in vitro. Our results show that TFP has the potential to be an effective killer of both actively growing and non-replicating bacilli including MDR TB. Further evaluation and in vivo studies with Trifluoperazine can finally help us know the feasibility of this compound to be used as either a lead compound for development of new TB drugs or as an adjunct in the current TB chemotherapy.Meeta J AdvaniImran SiddiquiPawan SharmaHemalatha ReddyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e44245 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Meeta J Advani Imran Siddiqui Pawan Sharma Hemalatha Reddy Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
description	Trifluoperazine, a known calmodulin antagonist, belongs to a class of phenothiazine compounds that have multiple sites of action in mycobacteria including lipid synthesis, DNA processes, protein synthesis and respiration. The objective of this study is to evaluate the potential of TFP to be used as a lead molecule for development of novel TB drugs by showing its efficacy on multiple drug resistant (MDR) Mycobacterium tuberculosis (M.tb) and non-replicating dormant M.tb. Wild type and MDR M.tb were treated with TFP under different growth conditions of stress like low pH, starvation, presence of nitric oxide and in THP-1 infection model. Perturbation in growth kinetics of bacilli at different concentrations of TFP was checked to determine the MIC of TFP for active as well as dormant bacilli. Results show that TFP is able to significantly reduce the actively replicating as well as non-replicating bacillary load. It has also shown inhibitory effect on the growth of MDR M.tb. TFP has shown enhanced activity against intracellular bacilli, presumably because phenothiazines are known to get accumulated in macrophages. This concentration was, otherwise, found to be non-toxic to macrophage in vitro. Our results show that TFP has the potential to be an effective killer of both actively growing and non-replicating bacilli including MDR TB. Further evaluation and in vivo studies with Trifluoperazine can finally help us know the feasibility of this compound to be used as either a lead compound for development of new TB drugs or as an adjunct in the current TB chemotherapy.
format	article
author	Meeta J Advani Imran Siddiqui Pawan Sharma Hemalatha Reddy
author_facet	Meeta J Advani Imran Siddiqui Pawan Sharma Hemalatha Reddy
author_sort	Meeta J Advani
title	Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
title_short	Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
title_full	Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
title_fullStr	Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
title_full_unstemmed	Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.
title_sort	activity of trifluoperazine against replicating, non-replicating and drug resistant m. tuberculosis.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/923df8ab87594f7399a69bc1291ded57
work_keys_str_mv	AT meetajadvani activityoftrifluoperazineagainstreplicatingnonreplicatinganddrugresistantmtuberculosis AT imransiddiqui activityoftrifluoperazineagainstreplicatingnonreplicatinganddrugresistantmtuberculosis AT pawansharma activityoftrifluoperazineagainstreplicatingnonreplicatinganddrugresistantmtuberculosis AT hemalathareddy activityoftrifluoperazineagainstreplicatingnonreplicatinganddrugresistantmtuberculosis
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Activity of trifluoperazine against replicating, non-replicating and drug resistant M. tuberculosis.

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