Results 91 to 100 of about 1,381 (193)

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

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

Morphodifferentiation of Gené’s organ in engorged Amblyomma sculptum Berlese, 1888 female ticks (Acari: Ixodidae)

Ticks and Tick-borne Diseases, 2018
The Gené's organ (GO) secretes a waxy substance on eggs that reduces water loss and has antimicrobial properties. The current study evaluated morphological and histochemical aspects of GO in Amblyomma sculptum from the period of post-feeding - when ticks detach from the host - to the stage just before oviposition.
Marcelo Francisco, Dos Santos, Magna Aparecida, Maltauro Soares, Maria Anete, Lallo, Darci Moraes, Barros-Battesti, Solange, de Lima-Netto, Diva Denelle, Spadacci-Morena   +5 more
openaire   +2 more sources

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

Ticks on Didelphis albiventris from a Cerrado area in the Midwestern Brazil. [PDF]

, 2018
This experiment studied tick fauna associated to Didelphis albiventris Lund 1840 from a Cerrado area (Mato Grosso do Sul State, non-adjoining to Pantanal) inserted in a pasture and agricultural activities matrix, with few natural preserved forest patches.
ANDREOTTI, R., BLECHA, I. M. Z., BORDIGNON, M. O., DE SÁ, E. F. G. G., DUARTE, P. De O., GARCIA, M. V., MARTINS, T. F., RAMOS, V. Do N., RODRIGUES, V. DA S., ZIMMERMANN, N. P.   +9 more
core  

Life cycle of Amblyomma mixtum (Acari: Ixodidae) parasitizing different hosts under laboratory conditions. [PDF]

, 2017
Amblyomma mixtum is a tick species in the Amblyomma cajennense complex. The known geographic range of A. mixtum extends from Texas in theUSAto western Ecuador and some islands in the Caribbean. Amblyomma mixtum is a vector of disease agents of veterinary
ANDREOTTI, R., BARROS, J. C., GARCIA, M. V., HIGA, L. de O. S., LEÓN, A. A. P. de, PIÑA, F. T. B., RODRIGUES, V. da S.   +6 more
core   +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

One World, One Health Challenge: The Holistic Understanding of Rickettsiosis Integrating Multi-Criteria Analysis Techniques and Spatial Statistics [PDF]

, 2018
Among the human diseases caused by etiological agents transmitted by ticks in Brazil, the most prevalent and public health interest is that one caused by species of Rickettsia—Spotted Fever (SF).
Brazil, Reginaldo P., da Cunha, Ana Paula, de Oliveira, Stefan Vilges, Duraes, Liliane, Gazêta, Gilberto S., Machado, Ingrid, Montenegro, Diego, Pedroso, Marcel   +7 more
core   +2 more sources

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

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