Results 41 to 50 of about 1,711,071 (216)

Rickettsial Infections Causing Acute Febrile Illness in Urban Slums, Brazil

, 2022
We conducted enhanced acute febrile illness surveillance in an urban slum community in Salvador, Brazil. We found that rickettsial infection accounted for 3.5% of urgent care visits for acute fever.
Ko, Albert I., Reis, Mitermayer G., Costa, Federico, Blanton, Lucas S., Ribeiro, Guilherme S., Wunder, Elsio A., Fournier, John B., Nery, Nivison, Walker, David H.   +8 more
core   +1 more source

A horizontally acquired pantothenate gene drives vitellogenin's benefit to whitefly symbiosis persistence

Insect Science, EarlyView.
This diagram illustrates that the horizontally transferred panBC influences the level and localization of vitellogenin (Vg) by facilitating pantothenate production and juvenile hormone (JH) biosynthesis. In turn, Vg shields symbionts by suppressing autophagic degradation in bacteriocytes.
Xiang Sun, Bing‐Qi Liu, Zhan‐Bo Chen, Chu‐Qiao Li, Xing‐Ye Li, Jun‐Bo Luan   +5 more
wiley   +1 more source

Severe bilateral retinal vasculitis as a delayed manifestation of rickettsial infection

Asian Journal of Internal Medicine
Ophthalmic manifestations of rickettsial infections are reported as mostly asymptomatic and self-limiting. A 27-year-old woman, 29 weeks pregnant, recently treated for rickettsial infection, presented ten days following discharge with visual blurring ...
I. A. Abeyagunawardena, K. K. S. N. Sirisena, B. H. N. R. Vitharana, P. Thuvarakan, R. M. S. H. Karunatilake   +4 more
doaj   +1 more source

‘Candidatus Rickettsia andeanae’ and Probable Exclusion of Rickettsia parkeri in Ticks from Dogs in a Natural Area of the Pampa Biome in Brazil

Pathogens, 2023
Spotted fever illness caused by the tick-borne pathogen Rickettsia parkeri has emerged in the Pampa biome in southern Brazil, where the tick Amblyomma tigrinum is implicated as the main vector.
Felipe S. Krawczak, Lina C. Binder, Fábio Gregori, Thiago F. Martins, Gracielle T. Pádua, Jonas Sponchiado, Geruza L. Melo, Gina Polo, Marcelo B. Labruna   +8 more
doaj   +1 more source

A horizontally transferred bacterial gene for pantothenic acid biosynthesis regulates diapause and reproduction in the spider mite Amphitetranychus viennensis

Insect Science, EarlyView.
A bacterial‐derived AvPBL gene encoding a pantothenate‐β‐alanine ligase was identified in Amphitetranychus viennensis. RNAi silencing of AvPBL reduced pantothenic acid production, impairing reproduction and diapause induction, while pantothenic acid supplementation rescued these phenotypes.
Meibin Liu, Yifei Wang, Yikang Ren, Fan Yang, Meifeng Ren, Qin Yu, Xuguo Zhou, Zezhong Yang, Jing Yang   +8 more
wiley   +1 more source

An epidemiological and serological study of Rickettsia in Western Australia [PDF]

, 2011
The study was aimed at investigating Western Australian rickettsiae, delving deeper into the epidemiology of a recently described rickettsia, Rickettsia gravesii, and any other rickettsiae lurking in the Western Australian bush. Prior to the discovery of
Abdad, Mohammad
core  

Autophagy and Inflammation During Rickettsial Infection [PDF]

, 2021
Rickettsiae are obligately intracellular bacteria that replicate in the cytoplasm of host cells. In my dissertation, I have studied the induction of autophagy by rickettsiae as well as the role of autophagy in the pathogenesis of rickettsioses in vitro ...
Bechelli, Jeremy
core  

Putting Rodents at the Center of One Health Programs: A Narrative Synthesis

Integrative Zoology, EarlyView.
Rodents link human, animal, and environmental health across diverse ecosystems. Rodent diversity underpins both zoonotic disease risk and ecosystem function. Environmental change reshapes rodent communities and spillover dynamics. Rodents act as reservoirs, amplifiers, and sentinels of emerging pathogens.
Steven R. Belmain
wiley   +1 more source

Systemic lupus erythematosus mimicking Japanese spotted fever due to Rickettsia japonica detection in an eschar: a case report

BMC Infectious Diseases
Background Neuropsychiatric systemic lupus erythematosus (NPSLE) is a subset of systemic lupus erythematosus (SLE) characterized by neurological and psychiatric manifestations.
Kento Izuta, Masashi Nishikubo, Ryohei Nomoto, Shuji Sumitomo, Yoshinori Matsuoka, Ryutaro Seo, Hiroaki Nishioka, Koichi Ariyoshi, Eiichiro Sando   +8 more
doaj   +1 more source

First report on the occurrence of Rickettsia slovaca and Rickettsia raoultii in Dermacentor silvarum in China

Parasites & Vectors, 2012
Background Rickettsioses are among both the longest known and most recently recognized infectious diseases. Although new spotted fever group rickettsiae have been isolated in many parts of the world including China, Little is known about the epidemiology
Tian Zhan-Cheng, Liu Guang-Yuan, Shen Hui, Xie Jun-Ren, Luo Jin, Tian Mei-Yuan   +5 more
doaj   +1 more source