Characterization of leptospira isolates from animals and humans: phylogenetic analysis identifies the prevalence of intermediate species in India

In this study, 191 culture isolates were recovered from suspected samples of animals and humans in Ellinghausen McCullough Johnson and Harris (EMJH) medium and assessed for its morphological features by dark field microscopy. Extracted DNA from individual culture was subjected to different PCR assay...

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Bibliographic Details
Published in:	SpringerPlus Vol. 2; no. 1; p. 362
Main Authors:	Balamurugan, Vinayagamurthy, Gangadhar, Nidaghatta L, Mohandoss, Nagalingam, Thirumalesh, Sushma Rahim Assadi, Dhar, Moushumi, Shome, Rajeswari, Krishnamoorthy, Paramanandham, Prabhudas, Krishnamsetty, Rahman, Habibur
Format:	Journal Article
Language:	English
Published:	Cham Springer International Publishing 30-07-2013 Springer Nature B.V BioMed Central Ltd
Subjects:	Biomedical and Life Sciences Humanities and Social Sciences multidisciplinary Science Science (multidisciplinary) Human Characterization Intermediate species Animals Prevalence Leptospira
Online Access:	Get full text
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Summary:	In this study, 191 culture isolates were recovered from suspected samples of animals and humans in Ellinghausen McCullough Johnson and Harris (EMJH) medium and assessed for its morphological features by dark field microscopy. Extracted DNA from individual culture was subjected to different PCR assays for identification and characterization of leptospira. Out of 99 positive leptospira cultures, 52 pathogenic leptospira isolates were characterized at species level by using partial RNA polymerase β-subunit ( rpoB) gene sequences. Phylogenetic analysis of the nucleotide sequences revealed that 30, 8, and 14 isolates belong to L. borgpetersenii / L. interrogans , L. kirschneri , and Leptospira intermediate species, respectively. Based on analysis of 99 leptospira isolates, the prevalent Leptospira species were L. borgpetersenii or L. interrogans (30.30%), L. kirschneri (8%) and Leptospira intermediate species (14.14%) in animals and humans. To the best of authors knowledge, this is the first study to use rpoB gene nucleotide sequence based phylogenetic analysis to identify/detect Leptospira intermediate species ( L. wolffii ) in animals and humans in India. Hence, the prevalence of this species will surely emphasize the importance of consideration of Leptospira intermediate species and formulate a way for further studies especially in understanding the newly emerging Leptospira in animals and humans and to combat the problem associated with the disease conditions.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2193-1801 2193-1801
DOI:	10.1186/2193-1801-2-362