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Draft Genome Sequences of Leptospira interrogans Serovar Copenhageni Strains Isolated from Patients with Weil's Disease in Brazil.

ABSTRACT: Leptospirosis is a worldwide zoonosis caused by pathogenic species of Leptospira In Brazil, this disease is endemic, presenting epidemic potential in rainy seasons. Here, we announce the whole-genome sequences of two L. interrogans serovar Copenhageni strains isolated from blood samples from two icteric patients associated with severe leptospirosis in Brazil.

SUBMITTER: Trindade CNR

PROVIDER: S-EPMC7019067 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Draft Genome Sequences of Leptospira interrogans Serovar Copenhageni Strains Isolated from Patients with Weil's Disease in Brazil.

Trindade Camilla N R CNR Panzenhagen Pedro H N PHN Junqueira Ricardo M RM Silva Deyse C V DCV Conte-Junior Carlos A CA Balassiano Ilana T IT

Microbiology resource announcements 20200213 7

Leptospirosis is a worldwide zoonosis caused by pathogenic species of <i>Leptospira</i> In Brazil, this disease is endemic, presenting epidemic potential in rainy seasons. Here, we announce the whole-genome sequences of two <i>L. interrogans</i> serovar Copenhageni strains isolated from blood samples from two icteric patients associated with severe leptospirosis in Brazil. ...[more]

PMID: 32054712

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Project description:BackgroundLeptospirosis is a widespread zoonotic disease worldwide. The lack of an adequate laboratory test is a major barrier for diagnosis, especially during the early stages of illness, when antibiotic therapy is most effective. Therefore, there is a critical need for an efficient diagnostic test for this life threatening disease.MethodologyIn order to identify new targets that could be used as diagnostic makers for leptopirosis, we constructed a protein microarray chip comprising 61% of Leptospira interrogans proteome and investigated the IgG response from 274 individuals, including 80 acute-phase, 80 convalescent-phase patients and 114 healthy control subjects from regions with endemic, high endemic, and no endemic transmission of leptospirosis. A nitrocellulose line blot assay was performed to validate the accuracy of the protein microarray results.Principal findingsWe found 16 antigens that can discriminate between acute cases and healthy individuals from a region with high endemic transmission of leptospirosis, and 18 antigens that distinguish convalescent cases. Some of the antigens identified in this study, such as LipL32, the non-identical domains of the Lig proteins, GroEL, and Loa22 are already known to be recognized by sera from human patients, thus serving as proof-of-concept for the serodiagnostic antigen discovery approach. Several novel antigens were identified, including the hypothetical protein LIC10215 which showed good sensitivity and specificity rates for both acute- and convalescent-phase patients.ConclusionsOur study is the first large-scale evaluation of immunodominant antigens associated with naturally acquired leptospiral infection, and novel as well as known serodiagnostic leptospiral antigens that are recognized by antibodies in the sera of leptospirosis cases were identified. The novel antigens identified here may have potential use in both the development of new tests and the improvement of currently available assays for diagnosing this neglected tropical disease. Further research is needed to assess the utility of these antigens in more deployable diagnostic platforms.

Dataset Information

Draft Genome Sequences of Leptospira interrogans Serovar Copenhageni Strains Isolated from Patients with Weil's Disease in Brazil.

Publications

Draft Genome Sequences of Leptospira interrogans Serovar Copenhageni Strains Isolated from Patients with Weil's Disease in Brazil.

Similar Datasets

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