Results 21 to 30 of about 3,995 (206)

Development and Clinical Validation of a Multiplex Real-Time Quantitative PCR Assay for Human Infection by Anaplasma phagocytophilum and Ehrlichia chaffeensis

Tropical Medicine and Infectious Disease, 2018
Background: Human granulocytic anaplasmosis (HGA), caused by Anaplasma phagocytophilum, and human monocytic ehrlichiosis (HME), caused by Ehrlichia chaffeensis, often present as undifferentiated fever but are not treated by typical empiric regimens for ...
Megan E Reller, J Stephen Dumler, Dumler J Stephen   +2 more
exaly   +3 more sources

Ehrlichia chaffeensis Infection in Dogs in South Korea

Vector-Borne and Zoonotic Diseases, 2008
Ehrlichia chaffeensis is one of the causative agents of canine ehrlichiosis and human monocytic ehrlichiosis (HME). Canine ehrlichiosis caused by E. chaffeensis was diagnosed in two dogs in South Korea based on clinical findings, and the diagnosis was confirmed by polymerase chain reaction (PCR) and DNA sequencing. A 5-year-old intact male American Pit
Do-Hyeon, Yu, Ying-Hua, Li, Ji-Seon, Yoon, Jong-Hyeon, Lee, Mi-Jin, Lee, Il-Jeoung, Yu, Joon-Seok, Chae, Jin-Ho, Park   +7 more
openaire   +3 more sources

Ehrlichia chaffeensis uses its surface protein EtpE to bind GPI-anchored protein DNase X and trigger entry into mammalian cells.

PLoS Pathogens, 2013
Ehrlichia chaffeensis, an obligatory intracellular rickettsial pathogen, enters and replicates in monocytes/macrophages and several non-phagocytic cells. E.
Dipu Mohan Kumar, Mamoru Yamaguchi, Koshiro Miura, Mingqun Lin, Marek Los, Johannes F Coy, Yasuko Rikihisa   +6 more
doaj   +2 more sources

Ehrlichia chaffeensis in Child, Venezuela

Emerging Infectious Diseases, 2008
To the Editor: Human monocytic ehrlichiosis is a tick-borne infectious disease caused by Ehrlichia chaffeensis (1). Serologic studies have indicated E. chaffeensis infection in Latin American countries: Venezuela (2), Mexico (3), Argentina (4), Chile (5), and Brazil (6). However, no molecular evidence for E. chaffeensis has been reported.
María C. Martínez, Clara N. Gutiérrez, Franklin Monger, Johanny Ruiz, Akemys Watts, Victor M. Mijares, María G. Rojas, Francisco J. Triana-Alonso   +7 more
doaj   +2 more sources

Ehrlichia chaffeensis DNA in Haemaphysalis longicornis Ticks, Connecticut, USA. [PDF]

Emerg Infect Dis
Informed by passive tick surveillance, we collected questing Haemaphysalis longicornis ticks from southwestern Connecticut, USA. Of 445 ticks tested by PCR, 3 nymphs were positive: 1 for Ehrlichia chaffeensis and 2 for Borrelia burgdorferi.
Molaei G, Mohapatra AR, Khalil N, Cozens D, Bonilla D.   +4 more
europepmc   +2 more sources

Comparative Analysis of Genome of Ehrlichia sp. HF, a Model Bacterium to Study Fatal Human Ehrlichiosis

BMC Genomics, 2021
Background The genus Ehrlichia consists of tick-borne obligatory intracellular bacteria that can cause deadly diseases of medical and agricultural importance. Ehrlichia sp. HF, isolated from Ixodes ovatus ticks in Japan [also referred to as I.
Mingqun Lin, Qingming Xiong, Matthew Chung, Sean C. Daugherty, Sushma Nagaraj, Naomi Sengamalay, Sandra Ott, Al Godinez, Luke J. Tallon, Lisa Sadzewicz, Claire Fraser, Julie C. Dunning Hotopp, Yasuko Rikihisa   +12 more
doaj   +1 more source

Experimental Ehrlichia chaffeensis infection in beagles [PDF]

Journal of Medical Microbiology, 2003
A canine model for human monocytic ehrlichiosis was used to assess persistent infection and antigenic variation of Ehrlichia chaffeensis. Two beagle dogs were infected subcutaneously with E. chaffeensis Arkansas strain. The dogs were observed for 6 months after inoculation for clinical signs, blood chemistry changes, antibodies to E.
Xiao-Feng, Zhang, Jian-Zhi, Zhang, S Wesley, Long, Randall P, Ruble, Xue-Jie, Yu   +4 more
openaire   +2 more sources

Ehrlichia chaffeensis Uses an Invasin To Suppress Reactive Oxygen Species Generation by Macrophages via CD147-Dependent Inhibition of Vav1 To Block Rac1 Activation [PDF]

MBio, 2020
Omid Teymournejad, Yasuko Rikihisa
exaly   +2 more sources

Ultrastructural variation of cultured Ehrlichia chaffeensis [PDF]

Journal of Medical Microbiology, 1995
The ultrastructure of Ehrlichia chaffeensis (Arkansas strain) was studied in non-irradiated and irradiated monolayers of mouse embryo, Vero, BGM and L929 cells, and in non-irradiated DH82 cells. Within the intracellular parasitophorous vacuoles (morulae), two types of ehrlichial cells were found regularly--those with uniformly dispersed nucleoid ...
V L, Popov, S M, Chen, H M, Feng, D H, Walker   +3 more
openaire   +2 more sources

Experimental infection of Rhipicephalus sanguineus with Ehrlichia chaffeensis [PDF]

Veterinary Microbiology, 2014
Ehrlichia chaffeensis, the etiologic agent of human monocytic ehrlichiosis, is a tick-borne rickettsial pathogen that is infective to a wide range of mammals, including dogs and people. Amblyomma americanum, the lone star tick, is considered the primary vector of E.
Ryan T. Stoffel, Jennifer C. McClure, Marion M. Butcher, Gayle C. Johnson, Will Roland, Chuanmin Cheng, Kamesh R. Sirigireddy, Roman Ganta, Kirstin Boughan, S.A. Ewing, Roger W. Stich   +10 more
openaire   +2 more sources