Results 71 to 80 of about 567 (157)

Host–parasite relationship in urban environments: A network analysis of haemoparasite infections in Nasua nasua Linnaeus (South American coati)

Medical and Veterinary Entomology, Volume 39, Issue 3, Page 456-463, September 2025.
Urban environments alter host–parasite dynamics, as seen in Nasua nasua, where haemotropic Mycoplasma plays a key role in parasite spread through frequent social interactions. Network analysis revealed low modularity in interactions between N. nasua and tick‐borne haemoparasites, with functional roles unaffected by biotic factors, tick infestation or ...
Filipe Martins Santos, Nayara Yoshie Sano, Livia Perles, Marcos Rogério André   +3 more
wiley   +1 more source

Density and behavior of capybara (Hydrochoerus hydrochaeris) ticks (Acari: Ixodidae) Amblyomma sculptum and Amblyomma dubitatum with notes on Rickettsia bellii infection: Assessing human exposure risk

Ticks and Tick-Borne Diseases
In several urban and peri‑urban areas of Brazil, populations of Amblyomma sculptum and Amblyomma dubitatum ticks are maintained by capybaras (Hydrochoerus hydrochaeris).
Matias P.J. Szabó, Caroline Lopes Queiroz, Adriane Suzin, Vinicius da Silva Rodrigues, Raíssa Brauner Kamla Vieira, Maria Marlene Martins, Lais Miguel Rezende, Ana Carolina P. Sousa, Vanessa do Nascimento Ramos, Fernanda Marinho Muraro, Lais Keocheguerian Fernandes, Lorena C.M. Santos, Rodrigo da Costa Maia, Amanda Ferreira Rezende   +13 more
doaj   +1 more source

CARACTERIZAÇÃO CELULAR DA HEMOLINFA DE FÊMEAS INGURGITADAS DE Amblyomma sculptum

Archives of Veterinary Science, 2020
O carrapato Ambyomma sculptum, encontrado as várias regiões do Brasil, é conhecido como “carrapato estrela” ou “carrapato do cavalo” e parasita animais domésticos, silvestres e humanos, sendo o principal transmissor de Rickettsia rickettsii, agente etiológico da Febre Maculosa Brasileira.
Andressa Aparecida de Lima Reis, Debora Azevedo Borges, Marisa Beatriz da Silva Rocha, Rayane Christine Pereira de Assis, Diefrey Ribeiro Campos, Melina Cardilo Campos Alves, Barbara Rauta de Avelar, Fabio Barbour Scott   +7 more
openaire   +2 more sources

The Immunology of Alpha‐Gal Syndrome: History, Tick Bites, IgE, and Delayed Anaphylaxis to Mammalian Meat

Immunological Reviews, Volume 332, Issue 1, July 2025.
ABSTRACT The primary features of the alpha‐gal syndrome (AGS) are (i) The IgE ab that are causally related to anaphylaxis with infusions of Cetuximab are specific for galactose alpha‐1,3‐galactose. (ii) In the USA, this IgE ab is induced by bites of the tick Amblyomma americanum. (iii) The anaphylactic reactions to food derived from non‐primate mammals
Thomas A. E. Platts‐Mills, Roopesh Singh Gangwar, Lisa Workman, Jeffrey M. Wilson   +3 more
wiley   +1 more source

Is Zebrafish a Good Model for the Alpha‐Gal Syndrome?

The FASEB Journal, Volume 39, Issue 9, 15 May 2025.
ABSTRACT The alpha‐Gal syndrome (AGS) is an underdiagnosed tick‐borne allergy characterized by both immediate and delayed IgE‐mediated anaphylactic reactions to the galactose‐alpha‐1,3‐galactose (alpha‐Gal) epitope. Common manifestations include gastrointestinal, cutaneous, and respiratory symptoms appearing 2–6 h after the consumption of mammalian ...
Rita Vaz‐Rodrigues, José de la Fuente
wiley   +1 more source

Serpins in the Spotlight: Novel Bioinformatic Insights Into Hyalomma dromedarii Sialotranscriptome

Biochemistry Research International, Volume 2025, Issue 1, 2025.
Ticks pose a significant global threat to human and animal health as vectors of numerous pathogens, including bacteria, viruses, and parasites. Beyond their harmful impact, tick salivary glands contain serine protease inhibitors (serpins) known for their potential pharmaceutical properties.
Hajer Aounallah, Ahmed Ouni, Fernanda Faria, Ali Bouattour, Youmna M’ghirbi, Harleen Khatra   +5 more
wiley   +1 more source

New tick records with notes on rickettsial infection from the wildlife of the state of Espírito Santo, southeastern Brazil

Ticks and Tick-Borne Diseases
This work aimed to report ticks infesting the wildlife among 15 municipalities of the state of Espírito Santo between 2016 and 2021, within the Atlantic Forest biome of southeastern Brazil. A total of 576 tick specimens (187 males, 56 females, 149 nymphs,
Igor da Cunha Lima Acosta, Isaias Roveri Garcia, Hermes Ribeiro Luz, Maria Carolina de Azevedo Serpa, Thiago Fernandes Martins, Ralph Eric Thijl Vanstreels, Marcelo B. Labruna   +6 more
doaj   +1 more source

Alpha‐Gal, epitope responsible for allergy to red meat, in the Mediterranean tick Hyalomma lusitanicum

Medical and Veterinary Entomology, Volume 38, Issue 3, Page 366-371, September 2024.
The presence of α‐Gal epitope ( was confirmed by the presence of reactive proteins of >250 kDa in samples from engorged and unfed H. lusitanicum ticks. The highest concentrations of α‐Gal were detected in salivary glands. Neither sex nor diet influenced the concentration of α‐Gal, which seems to indicate its endogenous production and its possible ...
Ángela Valcárcel, Andrea Briones Montero, Marta Rodero, Juan González‐Fernández, A. Sonia Olmeda, Félix Valcárcel, Carmen Cuéllar   +6 more
wiley   +1 more source

Tick bites, IgE to galactose‐alpha‐1,3‐galactose and urticarial or anaphylactic reactions to mammalian meat: The alpha‐gal syndrome

Allergy, Volume 79, Issue 6, Page 1440-1454, June 2024.
Abstract The recent recognition of a syndrome of tick‐acquired mammalian meat allergy has transformed the previously held view that mammalian meat is an uncommon allergen. The syndrome, mediated by IgE antibodies against the oligosaccharide galactose‐alpha‐1,3‐galactose (alpha‐gal), can also involve reactions to visceral organs, dairy, gelatin and ...
Jeffrey M. Wilson, Loren Erickson, Michael Levin, Samuel M. Ailsworth, Scott P. Commins, Thomas A. E. Platts‐Mills   +5 more
wiley   +1 more source

Landscape features associated to the occurrence of Amblyomma sculptum ticks: an application of zero inflated regression models

Brazilian Journal of Veterinary Medicine, 2016
. Bernardo-Pedro T., Silveira A.K. & Tassinari W.S. Landscape features associated to the occurrence of Amblyomma sculptum ticks: an application of zero inflated regression models.
Thiago Bernardo Pedro, Andrea Kill Silveira, Wagner de Souza Tassinari   +2 more
doaj