1
|
R Parthiban AB, Palavesam A, Srinivasan S, Mohanan A, Ghosh S, Krishnaswamy Gopalan T. Molecular characterization of Ehrlichia canis from naturally infected dogs reveals a novel Asiatic-lineage and co-circulation of multiple lineages in India. Res Vet Sci 2024; 175:105311. [PMID: 38823355 DOI: 10.1016/j.rvsc.2024.105311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 06/03/2024]
Abstract
Canine monocytic ehrlichiosis caused by Ehrlichia canis is an important rickettsial pathogen of dogs transmitted by Rhipicephalus sanguineus sensu lato ticks in India. Globally, molecular characterization of E. canis is done using different E. canis gene targets. This study aimed to characterize genetic diversity of uncultured Ehrlichia species from dogs by 16S rRNA and partial gp200 gene (termed as p43 region) sequences data. Phylogeny based on 16S rRNA gene did not reveal any region-specific lineages. The phylogeny based on 5' region of E. canis gp200 gene (termed as p43 region) revealed four major clusters (A, B, C and D) and the Indian isolates fall under clusters A and B. Cluster A is characterized by an insertion of unique 141 bp tandem repeat sequence. Similar tandem repeat sequence was found in one of the E canis isolates from east-Asia, suggesting a possible divergence within this species. The study shows evidence for divergence of a new lineage within E. canis. The location of this insertion at the 'ankyrin repeat domains' containing region is suggestive of its possible role in modulation of host responses.
Collapse
Affiliation(s)
- Aravindh Babu R Parthiban
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Azhahianambi Palavesam
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India.
| | - Sharmila Srinivasan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Arya Mohanan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| | - Srikanta Ghosh
- ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh 243122, India
| | - Tirumurugaan Krishnaswamy Gopalan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies, Tamil Nadu Veterinary and Animal Sciences University, Chennai 600051, India
| |
Collapse
|
2
|
Nieto-Cabrales JF, Salceda-Sánchez B, Zazueta-Islas HM, Solís-Cortés M, Landa-Flores MG, Del Mazo-López JC, Valtierra-Alzaga L, Soto-Gutiérrez JJ, Huerta-Jimenez H, Becker I, Rodríguez-Rojas JJ, Sánchez-Montes S. New records of Rhipicephalus linnaei infected by Rickettsia massiliae from Central Mexico. Zoonoses Public Health 2024; 71:217-224. [PMID: 38050875 DOI: 10.1111/zph.13101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/23/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND On the American continent, Rhipicephalus sanguineus s.l. comprises two species: Rhipicephalus linnaei and R. sanguineus s.s. Each species has been identified as a potential vector of at least one of five species of pathogenic bacteria of the genus Rickettsia. In particular, Rickettsia massiliae is one of three species with the greatest importance in public health at the continental level. In Mexico, this species is reported exclusively in the Nearctic states of Baja California and Chihuahua. AIM For this reason, the aim of this work was to provide new records of R. massiliae for the centre of the country derived from active acarological surveillance. MATERIALS AND METHODS During the period of February-October 2019, 29 dogs from six municipalities in the state of Morelos were sampled. Hosts were visually inspected, and ticks were recovered and identified morphologically and molecularly by amplification of the 16S rDNA gene. Subsequently, five genes from members of the genus Rickettsia were amplified and sequenced. RESULTS A total of 229 (117♀, 98♂ and 14 N) ticks identified as R. linnaei were recovered, two of which were positive for R. massiliae strains related to those recovered from Argentina and the United States. CONCLUSIONS This work provides the second record of R. massiliae infecting R. linnaei in Mexico and the Americas, increasing the geographic distribution of this Rickettsia species in the Neotropical region, and providing information on the possible role of R. linnaei as a potential vector of this microorganism.
Collapse
Affiliation(s)
- José Francisco Nieto-Cabrales
- Laboratorio de Entomología, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Beatriz Salceda-Sánchez
- Laboratorio de Entomología, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Héctor M Zazueta-Islas
- Centro de Medicina Tropical, División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Marlene Solís-Cortés
- Centro de Medicina Tropical, División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Magaly Guadalupe Landa-Flores
- Laboratorio de Genoma de Patógenos, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Juan Carlos Del Mazo-López
- Laboratorio de Genoma de Patógenos, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Laura Valtierra-Alzaga
- Laboratorio de Entomología, Laboratorio Estatal de Salud Pública, Secretaría de Salud, Morelos, Mexico
| | - Juan J Soto-Gutiérrez
- Laboratorio de Entomología, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Heron Huerta-Jimenez
- Laboratorio de Entomología, Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaría de Salud, Ciudad de México, Mexico
| | - Ingeborg Becker
- Centro de Medicina Tropical, División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Jorge J Rodríguez-Rojas
- Centro de Investigación y Desarrollo en Ciencias de la Salud, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Sokani Sánchez-Montes
- Centro de Medicina Tropical, División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
- Laboratorio de Diagnóstico, Facultad de Ciencias Biológicas y Agropecuarias región Tuxpan, Universidad Veracruzana, Tuxpan de Rodríguez Cano, Veracruz, Mexico
| |
Collapse
|