Results 1 to 10 of about 1,013 (116)

Spotted Fever Group Rickettsia Trigger Species-Specific Alterations in Macrophage Proteome Signatures with Different Impacts in Host Innate Inflammatory Responses

Microbiology Spectrum, 2021
The molecular details underlying differences in pathogenicity between Rickettsia species remain to be fully understood. Evidence points to macrophage permissiveness as a key mechanism in rickettsial virulence.
Pedro Curto, Cátia Santa, Luísa Cortes, Bruno Manadas, Isaura Simões   +4 more
doaj   +1 more source

Analysis of the Rickettsia africae genome reveals that virulence acquisition in Rickettsia species may be explained by genome reduction

BMC Genomics, 2009
Background The Rickettsia genus includes 25 validated species, 17 of which are proven human pathogens. Among these, the pathogenicity varies greatly, from the highly virulent R.
Audic Stéphane, Parola Philippe, Socolovschi Cristina, Renesto Patricia, Giumelli Bernadette, Robert Catherine, Leroy Quentin, El Karkouri Khalid, Fournier Pierre-Edouard, Raoult Didier   +9 more
doaj   +1 more source

Molecular detection of multiple Rickettsia species in ticks from the Republic of Guinea

Ticks and Tick-Borne Diseases
Tick-borne rickettsioses are emerging and re-emerging zoonotic diseases worldwide that are caused by Gram-negative bacteria of the genus Rickettsia. Ticks act as both reservoirs and vectors for these bacteria, thereby increasing opportunities for the ...
Karifa Camara, Clément Labarrere, Adama Zan Diarra, Almamy Ousmane Deen Camara, Safiatou Lamine Diallo, Lanceï Kaba, Alissa Hammoud, Joa Braïthe Mangombi-Pambou, Jean Michel Bérenger, Lanan Wassy Soromou, Mamadou Cellou Balde, Pierre-Edouard Fournier, Florence Fenollar, Oleg Mediannikov   +13 more
doaj   +1 more source

Tissue-specific localization of tick-borne pathogens in ticks collected from camels in Kenya: insights into vector competence

Frontiers in Cellular and Infection Microbiology
BackgroundTick-borne pathogen (TBP) surveillance studies often use whole-tick homogenates when inferring tick-pathogen associations. However, localized TBP infections within tick tissues (saliva, hemolymph, salivary glands, and midgut) can inform ...
Rua Khogali, Rua Khogali, Rua Khogali, Armanda Bastos, Armanda Bastos, Joel L. Bargul, Joel L. Bargul, Dennis Getange, Dennis Getange, James Kabii, Daniel Masiga, Jandouwe Villinger   +11 more
doaj   +1 more source

Detection of Tick-Borne Bacterial and Protozoan Pathogens in Ticks from the Zambia–Angola Border

Pathogens, 2022
Tick-borne diseases (TBDs), including emerging and re-emerging zoonoses, are of public health importance worldwide; however, TBDs tend to be overlooked, especially in countries with fewer resources, such as Zambia and Angola.
Yongjin Qiu, Martin Simuunza, Masahiro Kajihara, Joseph Ndebe, Ngonda Saasa, Penjani Kapila, Hayato Furumoto, Alice C. C. Lau, Ryo Nakao, Ayato Takada, Hirofumi Sawa   +10 more
doaj   +1 more source

Acute Spotted Fever Rickettsiosis among Febrile Patients, Cameroon

Emerging Infectious Diseases, 2004
Although potential arthropod vectors are abundant in Cameroon, acute febrile illnesses are rarely evaluated for arboviral or rickettsial infections. Serum samples from 234 acutely febrile patients at clinics in Tiko and Buea, Cameroon, were examined for ...
Lucy M. Ndip, Donald H. Bouyer, Amelia P.A. Travassos Da Rosa, V.P.K. Titanji, Robert B. Tesh, David H. Walker   +5 more
doaj   +1 more source

Detection and Identification of Spotted Fever Group Rickettsiae and Ehrlichiae in African Ticks

Emerging Infectious Diseases, 2001
Rickettsia africae, a recently identified pathogen, was detected for the first time in Amblyomma ticks from Niger, Mali, Burundi, and Sudan, and "R. mongolotimonae" was identified for the first time in Africa. Rickettsiae of unknown pathogenicity and two
Philippe Parola, Hisashi Inokuma, Jean-Louis Camicas, Philippe Brouqui, Didier Raoult   +4 more
doaj   +1 more source

Tick-borne rickettsioses, neglected emerging diseases in rural Senegal. [PDF]

PLoS Neglected Tropical Diseases, 2010
BACKGROUND: Rickettsioses are one of the most important causes of systemic febrile illness among travelers from developed countries, but little is known about their incidence in indigenous populations, especially in West Africa.
Oleg Mediannikov, Georges Diatta, Florence Fenollar, Cheikh Sokhna, Jean-François Trape, Didier Raoult   +5 more
doaj   +1 more source

Prevalence and diversity of spotted fever group Rickettsia species in ixodid ticks from domestic dogs in Chad, Africa

Ticks and Tick-Borne Diseases
Tick-borne pathogens in the genus Rickettsia are the causative agents of severe and potentially fatal spotted fever group (SFG) and typhus group diseases in dogs and humans.
Stephanie Osip, Morgan Friedman, Ellen Haynes, Sarah M. Coker, John A. Bryan II, Metinou Sidouin, Philip Tchindebet Ouakou, Bongo Nare Richard Ngandolo, Christopher A. Cleveland, Michael J. Yabsley   +9 more
doaj   +1 more source

Molecular Detection and Identification of Spotted Fever Group Rickettsiae in Ticks Collected from the West Bank, Palestinian Territories.

PLoS Neglected Tropical Diseases, 2016
BackgroundTick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group (SFG) rickettsiae. Although Spotted Fever is prevalent in the Middle East, no reports for the presence of tick-borne pathogens are ...
Suheir Ereqat, Abedelmajeed Nasereddin, Amer Al-Jawabreh, Kifaya Azmi, Shimon Harrus, Kosta Mumcuoglu, Dimtry Apanaskevich, Ziad Abdeen   +7 more
doaj   +1 more source