32 documents found, page 1 of 4
Efficacy of the Vaccine Candidate Based on the P0 Peptide against Dermacentor n...
Rodríguez Mallon, A.; Encinosa Guzmán, P.E.; Bello, Y.; Domingos, A.; Antunes, S.; Kopacek, P.; Santos, A.S.; Velez, R.; Perner, J.; Ledesma Bravo, F.L.The control of ticks through vaccination offers a sustainable alternative to the use of chemicals that cause contamination and the selection of resistant tick strains. However, only a limited number of anti-tick vaccines have reached commercial realization. In this sense, an antigen effective against different tick species is a desirable target for developing such vaccines. A peptide derived from the tick P0 pr...
A importância dos artrópodes ixodídeos para a Saúde Pública na Região de Saúde ...
Torres, C.; Santos, A.S.; Lopes de Carvalho, I.; Gomes, F.; Serrada, E.; Gonçalo, J.; Codeiro, E.; Menezes de Almeida, L.; Tavares, A.; Santos Silva, M.As doenças transmitidas por vetores têm reemergido → alterações climáticas, demográficas, genéticas nos agentes patogénicos, resistências a inseticidas e mobilidade de populações e bens. Os ixodídeos são um dos vetores com mais impacto na Saúde Pública. Este estudo pretende caracterizar a distribuição de ixodídeos por critérios temporo-espaciais, ambientais e parasitismo, no âmbito da Rede de Vigilância de Veto...
Detection of Anaplasma phagocytophilum, Candidatus Neoehrlichia sp., Coxiella b...
Santos, A.S.; de Bruin, A.; Veloso, A.R.; Marques, C.; Pereira da Fonseca, I.; De Sousa, R.; Sprong, H.; Santos-Silva, M.M.Tick-borne agents with medical relevance have been recorded in Portugal but little is known about their oc-currence in urban outdoor leisure areas. This study aimed to investigate ticks and tick-borne agents in threepublic parks of Lisbon’s metropolitan area. A total of 234 questing ticks belonging to eight species were found inParque Florestal de Monsanto (PFM). Ixodes ventalloi represented 40% of collections....
Micro- and nanoparticles based on alkali-earth metal hydroxides for cultural he...
Galacho, Cristina; Girginova, P.I.; Candeias, António; Mirão, José; Veiga, R; Santos, A.S.Wall renders are subject of constant aging and deterioration and they therefore need repair and treatment. The polymers used in the past for consolidation show many drawbacks and often accelerate the deterioration. This implies the need of new non-toxic materials, preferably of the same composition as the original art work, compatible, with long-term efficiency, without side effect, easy for application. Differ...
Rhipicephalus bursa Sialotranscriptomic Response to Blood Feeding and Babesia o...
Antunes, S.; Couto, J.; Ferrolho, J.; Rodrigues, F.; Nobre, J.; Santos, A.S.; Santos-Silva, M.M.; de la Fuente, J.; Domingos, A.Ticks are among the most prevalent blood-feeding arthropods, and they act as vectors and reservoirs for numerous pathogens. Sialotranscriptomic characterizations of tick responses to blood feeding and pathogen infections can offer new insights into the molecular interplay occurring at the tick-host-pathogen interface. In the present study, we aimed to identify and characterize Rhipicephalus bursa salivary gland...
Molecular heterogeneity of Rhipicephalus sanguineus sensu lato and screening fo...
Santos, G.S.; Couto, J.; Silva-Perdosa, R.; Ferrolho, J.; Santos, A.S.; Santos-Silva, M.M.; Antunes, S.; Domingos, A.The present study aimed to expand knowledge regarding the molecular characterization of R. sanguineus s.l. in Portugal and to screen for ticks naturally infected with E. canis. A total of 113 R. sanguineus s.l. were collected questing or attached to domestic and wild animals from the 18 administrative regions of mainland Portugal. All the ticks were analyzed for the 16S rRNA and the partial sequences obtained s...
Guidelines for the Direct Detection of Anaplasma spp. in Diagnosis and Epidemio...
Silaghi, C.; Santos, A.S.; Gomes, J.; Christova, I.; Matei, I.A.; Walder, G.; Domingos, A.; Bell-Sakyi, L.; Sprong, H.; von Loewenich, F.D.; Oteo, J.A.The genus Anaplasma (Rickettsiales: Anaplasmataceae) comprises obligate intracellular Gram-negative bacteria that are mainly transmitted by ticks, and currently includes six species: Anaplasma bovis, Anaplasma centrale, Anaplasma marginale, Anaplasma phagocytophilum, Anaplasma platys, and Anaplasma ovis. These have long been known as etiological agents of veterinary diseases that affect domestic and wild animal...
Critical Aspects for Detection of Coxiella burnetii
Mori, M.; Mertens, K.; Cutler, S.J.; Santos, A.S.Coxiella burnetii is a globally distributed zoonotic γ-proteobacterium with an obligatory intracellular lifestyle. It is the causative agent of Q fever in humans and of coxiellosis among ruminants, although the agent is also detected in ticks, birds, and various other mammalian species. Requirements for intracellular multiplication together with the necessity for biosafety level 3 facilities restrict the cultiv...
Ixodes ventalloi: a vector role to be explored
Santos, A.S.; de Bruin, A.; Veloso, R.; Marques, C.; Pereira da Fonseca, I.; de Sousa, R.; Sprong, H.; Santos-Silva, M.M.Ixodes ventalloi is still a poorly studied tick and its public health relevance largely unknown. In Portugal it is known to share habitats with Ixodes ricinus in mainland littoral areas and to parasitize a variety of wild and domesticated animals and also humans. The potential involvement of I. ventalloi in the natural cycle of tick‐borne agents was first suggested by the detection of a new variant of Anaplasma...
Portuguese data regarding the Rickettsiales and Coxiella detected in ticks and ...
Santos, A.S.The Center for Vectors and Infectious Diseases Research (CEDVI), from the National Institute of Health, is a reference laboratory on vector-borne with human health impact.