Results 21 to 30 of about 9,352 (203)

Ehrlichia chaffeensis EplA Interaction With Host Cell Protein Disulfide Isomerase Promotes Infection [PDF]

Frontiers in Cellular and Infection Microbiology, 2020
Ehrlichia chaffeensis is an obligate intracellular bacterium that invades monocytes to cause the emerging and potentially severe disease, monocytic ehrlichiosis.
Ryan S. Green, Jerilyn R. Izac, Waheeda A. Naimi, Nathaniel O'Bier, Edward B. Breitschwerdt, Richard T. Marconi, Jason A. Carlyon   +6 more
doaj   +2 more sources

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
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 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

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 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

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

Ehrlichia chaffeensis:a Prototypical Emerging Pathogen [PDF]

Clinical Microbiology Reviews, 2003
SUMMARYEhrlichia chaffeensis is an obligately intracellular, tick-transmitted bacterium that is maintained in nature in a cycle involving at least one and perhaps several vertebrate reservoir hosts. The moderate to severe disease caused by E. chaffeensis in humans, first identified in 1986 and reported for more than 1,000 patients through 2000 ...
Paddock, Christopher D, Childs, James E.
openaire   +3 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

mBio, 2020
The obligatory intracellular pathogen Ehrlichia chaffeensis lacks most factors that could respond to oxidative stress (a host cell defense mechanism).
Omid Teymournejad, Yasuko Rikihisa
doaj   +1 more source