Results 41 to 50 of about 4,003 (214)

Heparin protects human endothelial cells infected by Rickettsia rickettsii [PDF]

Infection and Immunity, 1991
Routine culture of endothelial cells currently includes the use of heparin, which significantly reduces cell doubling time and increases cell population size. Heparin protects cultured arterial endothelial cells from damage by toxic oxygen metabolites produced by the action of xanthine and xanthine oxidase.
D J, Silverman, L A, Santucci, Z, Sekeyova   +2 more
openaire   +2 more sources

Rickettsia species infecting Amblyomma ticks from an area endemic for Brazilian spotted fever in Brazil Rickettsia infectando carrapatos Amblyomma de uma área endêmica para febre maculosa Brasileira no Brasil

Revista Brasileira de Parasitologia Veterinária, 2011
This study reports rickettsial infection in Amblyomma cajennense and Amblyomma dubitatum ticks collected in an area of the state of Minas Gerais, Brazil, where Brazilian spotted fever is considered endemic. For this purpose, 400 adults of A.
Elizângela Guedes, Romário Cerqueira Leite, Richard Campos Pacheco, Iara Silveira, Marcelo Bahia Labruna   +4 more
doaj   +1 more source

Resolution of Noncardiogenic Pulmonary Oedema and Suspected Uraemic Pneumonitis in a Dog With Acute Kidney Injury Treated by Haemodialysis

Veterinary Medicine and Science, Volume 12, Issue 1, January 2026.
Noncardiogenic pulmonary oedema (suspected uraemic pneumonitis) secondary to acute kidney injury in a dog. This case suggests that noncardiogenic pulmonary oedema may have been triggered by uraemia and systemic inflammation, and that haemodialysis may have contributed to pulmonary recovery by alleviating the uraemic condition.
Se‐Hoon Kim, Jun‐Hyeong Park, Yoon‐Soo Jeong, Seo‐Yeon Park, Sung‐Ryoung Kim, Min‐Ok Ryu, Ji‐Hye Choi, Kyoung‐Won Seo   +7 more
wiley   +1 more source

Rickettsia rickettsii Co-feeding Transmission among Amblyomma aureolatum Ticks. [PDF]

Emerg Infect Dis, 2018
Amblyomma aureolatum ticks are vectors of Rickettsia rickettsii, the etiologic agent of Rocky Mountain spotted fever in Brazil. Maintenance of R. rickettsii in nature depends on horizontal transmission along tick generations. Although such transmission is known to occur when uninfected and infected ticks feed simultaneously on susceptible animals (co ...
Moraes-Filho J, Costa FB, Gerardi M, Soares HS, Labruna MB.   +4 more
europepmc   +5 more sources

Lethal Case of Bourbon Virus Leading to Shock and ECMO Utilization

Case Reports in Infectious Diseases, Volume 2026, Issue 1, 2026.
We present a lethal case of Bourbon virus infection in a 63‐year‐old Caucasian, diabetic male who was previously in good health. The patient had spent time in the wooded areas of Bourbon County, Kansas, and removed three ticks from his body 5 days prior to presentation.
Allianna Mitchell, Andrew Gessouroun, Wissam El Atrouni, Ryan Kubat, Omar Almoghrabi, Megan Vorhies, Brigid Flynn, Rajib Chowdhury   +7 more
wiley   +1 more source

Rickettsial neuroretinitis: A report of 2 cases

American Journal of Ophthalmology Case Reports, 2021
Purpose: The authors present two cases of neuroretinitis caused by Rickettsia rickettsii infection. Observations: Case 1 is a 24-year-old male who presented with 2 months of vision loss.
Caroline C. Awh, Akshay S. Thomas
doaj   +1 more source

Drug Design and Delivery for Intracellular Bacteria: Emerging Paradigms

Drug Development Research, Volume 86, Issue 8, December 2025.
ABSTRACT Intracellular bacteria exploit host cell niches, such as lysosomes, phagosomes, cytosol, entire cells, and even erythrocytes, to evade immune clearance and escape conventional antibiotics. These environments pose numerous therapeutic challenges, including crossing host cell membranes, navigating endosomal trafficking, tolerating acidic and ...
Babatunde Ibrahim Olowu, Maryam Ebunoluwa Zakariya, Abdulmuheez Abiola Abdulkareem, Olalekan Toheeb Okewale, Muhammad Halima Idris, Halimah Oluwayemisi Olayiwola   +5 more
wiley   +1 more source

Ecological dynamics of blacklegged ticks, vertebrate hosts, and associated zoonotic pathogens in northeastern forests

Ecosphere, Volume 16, Issue 12, December 2025.
Abstract Specific host‐tick interactions in temperate forest systems influence variation in density and infection prevalence of nymphal blacklegged tick (Ixodes scapularis). The density of infected nymphs (DIN), which is the product of nymphal infection prevalence (NIP) and density of questing nymphs (DON), influences the risk of human exposure to tick‐
Shannon L. LaDeau, Kelly Oggenfuss, Alexander Schmidt, Saravanan Thangamani, Richard S. Ostfeld   +4 more
wiley   +1 more source

Detection of Rickettsia spp. in Rhipicephalus sanguineus (sensu lato) collected from free-roaming dogs in Coahuila state, northern Mexico

Parasites & Vectors, 2019
Background The aim of this study was to detect and molecularly identify Rickettsia spp. in Rhipicephalus sanguineus (sensu lato) collected from free-roaming dogs in 30 communities from five municipalities in the south of Coahuila State, northern Mexico ...
Aldo I. Ortega-Morales, Erika Nava-Reyna, Verónica Ávila-Rodríguez, Vicente H. González-Álvarez, Antonio Castillo-Martínez, Quetzaly K. Siller-Rodríguez, Alejandro Cabezas-Cruz, Filipe Dantas-Torres, Consuelo Almazán   +8 more
doaj   +1 more source

Automated identification of spotted‐fever tick vectors using convolutional neural networks

Medical and Veterinary Entomology, Volume 39, Issue 4, Page 829-841, December 2025.
We evaluate the performance of convolutional neural networks (CNN) AlexNet, ResNet‐50 and MobileNetV2 for the automated identification of tick species capable of transmitting spotted fever. CNNs achieved accuracy rates of ~90% in identifying ticks and showed sensitivities of 59%–100% according to species, sex, position or image resolution.
Isadora R. C. Gomes, Vinícius L. Miranda, José Fabrício C. Leal, Igor P. Oliveira, Paula J. Silva, Karla Bitencourth, Claudio M. Rodrigues, Liege R. Siqueira, Marcelo B. Labruna, Gilberto S. Gazeta, Marinete Amorim, Rodrigo Gurgel‐Gonçalves   +11 more
wiley   +1 more source