Results 71 to 80 of about 9,793 (167)

A case of human monocytic ehrlichiosis in Serbia [PDF]

Srpski Arhiv za Celokupno Lekarstvo, 2014
Introduction. Ehrlichiosis is a bacterial zoonosis transmitted by hematophagous arthropods - ticks. In humans, it occurs as monocytic, granulocytic, and ewingii ehrlichiosis.
Arsić Bogdan, Gligić Ana, Ristanović Elizabeta, Lako Branislav, Potkonjak Aleksandar, Peruničić Milan, Pavlović Momčilo   +6 more
doaj   +1 more source

The developmental cycle of Ehrlichia chaffeensis in vertebrate cells [PDF]

Cellular Microbiology, 2007
Ehrlichia chaffeensis, an obligatory intracellular bacterium, has two forms in mammalian cells: small dense-cored cells (DC) with dense nucleoid and larger reticulate cells (RC) with uniformly dispersed nucleoid. We have determined by electron microscopy that DC but not RC attaches to and enters into the host cells and RC but not DC multiples inside ...
Jian-zhi, Zhang, Vsevolod L, Popov, Si, Gao, David H, Walker, Xue-jie, Yu   +4 more
openaire   +2 more sources

Sequence Determinants Spanning −10 Motif and Spacer Region Implicated in Unique Ehrlichia chaffeensis Sigma 32-Dependent Promoter Activity of dnaK Gene

Frontiers in Microbiology, 2019
Ehrlichia chaffeensis is an obligate intracellular tick-borne bacterium that causes human monocytic ehrlichiosis. Studying Ehrlichia gene regulation is challenge, as this and related rickettsiales lack natural plasmids and mutagenesis experiments are of ...
Huitao Liu, Roman R. Ganta
doaj   +1 more source

Aggregate-reactivation activity of the molecular chaperone ClpB from Ehrlichia chaffeensis. [PDF]

PLoS ONE, 2013
Rickettsiale diseases, including human monocytic ehrlichiosis caused by Ehrlichia chaffeensis, are the second leading cause of the tick-borne infections in the USA and a growing health concern. Little is known about how E.
Ting Zhang, Sabina Kedzierska-Mieszkowska, Huitao Liu, Chuanmin Cheng, Roman R Ganta, Michal Zolkiewski   +5 more
doaj   +1 more source

Intravascular persistence of Anaplasma platys, Ehrlichia chaffeensis, and Ehrlichia ewingii DNA in the blood of a dog and two family members

Parasites & Vectors, 2014
Background Anaplasmosis, caused by Anaplasma phagocytophilum and Anaplasma platys, and ehrlichiosis, caused by Ehrlichia chaffeensis, Ehrlichia ewingii, the "Panola Mountain Ehrlichia" and Ehrlichia muris- like pathogens have been identified as emerging ...
Edward B Breitschwerdt, Barbara C Hegarty, Barbara A Qurollo, Tais B Saito, Ricardo G Maggi, Lucas S Blanton, Donald H Bouyer   +6 more
doaj   +1 more source

Mutations in Ehrlichia chaffeensis Causing Polar Effects in Gene Expression and Differential Host Specificities. [PDF]

PLoS ONE, 2015
Ehrlichia chaffeensis, a tick-borne rickettsial, is responsible for human monocytic ehrlichiosis. In this study, we assessed E. chaffeensis insertion mutations impacting the transcription of genes near the insertion sites.
Chuanmin Cheng, Arathy D S Nair, Deborah C Jaworski, Roman R Ganta   +3 more
doaj   +1 more source

Natural Infection of Domestic Goats withEhrlichia chaffeensis [PDF]

Journal of Clinical Microbiology, 2000
ABSTRACTThirty-eight domestic goats from an area ofEhrlichia chaffeensisendemicity were tested for antibodies reactive toE. chaffeensisand forE. chaffeensis-specific 16S rRNA gene fragments by an indirect fluorescent antibody test and a nested PCR assay, respectively. Twenty-eight of 38 (73.7%) goats had antibodies reactive toE.
V G, Dugan, S E, Little, D E, Stallknecht, A D, Beall   +3 more
openaire   +2 more sources

Fatal Monocytic Ehrlichiosis in Woman, Mexico, 2013

Emerging Infectious Diseases, 2016
Human monocytic ehrlichiosis is a febrile illness caused by Ehrlichia chaffeensis, an intracellular bacterium transmitted by ticks. In Mexico, a case of E.
Carolina G. Sosa-Gutierrez, Fortino Solorzano-Santos, David Walker, Javier Torres, Carlos A. Serrano, Guadalupe Gordillo-Perez   +5 more
doaj   +1 more source

Ehrlichia chaffeensis Tandem Repeat Effector Targets Differentially Influence Infection [PDF]

Frontiers in Cellular and Infection Microbiology, 2017
Ehrlichia chaffeensis infects mononuclear phagocytes and survives intracellularly by exploiting host cell processes to evade host defenses. The mechanisms involved are not fully defined, but appear to rely largely on a subset of tandem repeat proteins (TRP) effectors. E.
Tian Luo, Paige S. Dunphy, Jere W. McBride, Jere W. McBride, Jere W. McBride, Jere W. McBride, Jere W. McBride   +6 more
openaire   +3 more sources

Cellular immune response of Amblyomma sculptum and Amblyomma americanum to entomopathogenic fungi: Implications for biological tick control

Medical and Veterinary Entomology, EarlyView.
Amblyomma sculptum showed a plasmatocyte‐dominant haemocyte profile. Beauveria bassiana increased plasmatocytes and reduced granulocytes, whereas Metarhizium robertsii did not cause significant changes. Amblyomma americanum showed a granulocyte‐dominant haemocyte profile. Beauveria bassiana reduced total haemocytes and granulocytes. B.
Cárita de Souza Ribeiro‐Silva, Valesca Henrique Lima, Salorrane Miranda N. Pinto, Gustavo Felizardo S. Sandes, Victor Hugo Ribeiro Costa, Albert Mulenga, Adela S. Oliva Chavez, Éverton Kort Kamp Fernandes   +7 more
wiley   +1 more source