Results 81 to 90 of about 9,793 (167)

Molecular and serological detection of Ehrlichia spp. in cats on São Luís Island, Maranhão, Brazil Detecção molecular e sorológica de Ehrlichia spp. em gatos da ilha de São Luís, Maranhão, Brasil

Revista Brasileira de Parasitologia Veterinária, 2012
Ehrlichiosis is a tick-borne disease that affects both humans and animals. The few existing reports on ehrlichiosis in Brazilian cats have been based on observation of morulae in leukocytes and, more recently, on molecular detection of Ehrlichia sp.
Maria do Socorro Costa de Oliveira Braga, Marcos Rogério André, Carla Roberta Freschi, Márcia Cristina Alves Teixeira, Rosangela Zacarias Machado   +4 more
doaj   +1 more source

Infection with the Neorickettsial Organism Stellantchasmus falcatus Agent in an Arctic Fox (Vulpes lagopus)

Veterinary Clinical Pathology, EarlyView.
ABSTRACT A 1‐year‐old female‐intact arctic fox (Vulpes lagopus) presented for diarrhea, lethargy, severe thrombocytopenia, and hyperbilirubinemia. Blood film evaluation revealed intracytoplasmic coccoid bacteria within moderate numbers of leukocytes consistent with infection by a rickettsial organism.
Jeremy P. Bessett, Alexis G. Davidson, Alyssa M. Scagnelli, Kristen R. Friedrichs   +3 more
wiley   +1 more source

Ehrlichia chaffeensis and Its Invasin EtpE Block Reactive Oxygen Species Generation by Macrophages in a DNase X-Dependent Manner

mBio, 2017
The obligatory intracellular pathogen Ehrlichia chaffeensis lacks most genes that confer resistance to oxidative stress but can block reactive oxygen species (ROS) generation by host monocytes-macrophages.
Omid Teymournejad, Mingqun Lin, Yasuko Rikihisa   +2 more
doaj   +1 more source

Rickettsiales in South America: A Systematic Review of Their Molecular Detection and Distribution in Arthropods and Vertebrates

Public Health Challenges, Volume 5, Issue 2, June 2026.
ABSTRACT Bacteria of the order Rickettsiales comprise a diverse group of obligate intracellular microorganisms that are globally distributed and highly prevalent in tropical and subtropical regions. In South America, these bacteria have been associated with arthropod vectors, such as ticks, fleas, mites, lice, and certain dipterans, as well as with a ...
Cristian J. Zamorano‐Gómez, Paula A. Ossa‐López, Estefani T. Martínez‐Sánchez, Fredy A. Rivera‐Paéz   +3 more
wiley   +1 more source

Cell signaling in Ehrlichia infection and cancer: Parallels in pathogenesis

Frontiers in Cellular and Infection Microbiology
Ehrlichia chaffeensis (E. chaffeensis) has recently emerged as an intracellular bacterial pathogen with sophisticated survival mechanisms that include repurposing evolutionarily conserved eukaryotic cell signaling pathways for immune evasion.
Regina N. Solomon, Nicholas A. Pittner, Jaclyn R. McCoy, Paityn A. Warwick, Jere W. McBride, Jere W. McBride, Jere W. McBride, Jere W. McBride, Jere W. McBride   +8 more
doaj   +1 more source

County-level surveillance for the lone star tick, Amblyomma americanum, and its associated pathogen, Ehrlichia chaffeensis, in Kentucky.

Ticks and Tick-borne Diseases, 2022
Kentucky experiences some of the highest incidence rates for ehrlichiosis nationwide. Ehrlichiosis is a bacterial infection caused primarily by the pathogen Ehrlichia chaffeensis and can be transmitted to humans through the bite of an infected tick ...
Anna R. Pasternak, S. R. Palli
semanticscholar   +1 more source

Latent Neoehrlichia mikurensis Infections May Be Reactivated in Patients With B‐Cell Lymphomas Treated With Rituximab

Immunology, Volume 178, Issue 2, Page 307-317, June 2026.
Eight percent of this cohort of patients had a latent Neoehrlichia mikurensis infection. It was only the latently infected patients who had N. mikurensis‐specific T cells, not the matched B‐cell lymphoma patients without the infection. The T‐cell responses of latently infected patients included perforin‐expressing Th1 and CD8+ T cells that upregulated ...
Linda Wass, Catharina Lewerin, Daniel Jaén‐Luchoro, Christine Lingblom, Christine Wennerås   +4 more
wiley   +1 more source

Ehrlichia chaffeensis TRP75 Interacts with Host Cell Targets Involved in Homeostasis, Cytoskeleton Organization, and Apoptosis Regulation To Promote Infection

mSphere, 2018
Ehrlichia chaffeensis is an obligately intracellular bacterium that exhibits tropism for mononuclear phagocytes. The mechanisms involved in E. chaffeensis infection of the host cell and evasion of host defenses are not fully defined, but a subset of type
Tian Luo, Shubhajit Mitra, Jere W. McBride   +2 more
doaj   +1 more source

Human ehrlichiosis [PDF]

Vojnosanitetski Pregled, 2006
Background. Human ehrlichiosis is a newly recognized disease. It is a tick-borne disease caused by several bacterial species of the genhus Erlichia. These are small gram-negative pleomorphic cocci, that are obligatory intracellular bacteria.
Đokić Milomir, Ćurčić Petar, Nožić Darko, Lako Branislav, Begović Vesna, Rajić-Dimitrijević Radmila, Hristović Dejan   +6 more
doaj   +1 more source

A Case of Sepsis Caused by ST80 Multidrug‐Resistant Enterococcus faecium With Concurrent Klebsiella pneumoniae Infection in a Dog

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
An 8‐year‐old dog developed acute respiratory distress that progressed to sepsis and death. Multidrug‐resistant Enterococcus faecium ST80 was isolated from the liver and kidney, while Klebsiella pneumoniae was detected in the lung by PCR. Whole‐genome sequencing showed that the ST80 isolates were genetically identical, suggesting hematogenous spread ...
Hyung‐min Seo, Tae‐Min La, Ye‐ram Seo, Dong‐Yeop Lee, Hyun‐Jung Han, Ji‐Yeon Hyeon   +5 more
wiley   +1 more source