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[PMID]:27756353
[Au] Autor:Otranto D; Johnson G; Syvrud K; Yoon S; Hunter JS; Rehbein S
[Ad] Endereço:Department of Veterinary Medicine, University of Bari, Str. prov. per Casamassima km 3, 70010, Valenzano (Bari), Italy. domenico.otrnto@uniba.it.
[Ti] Título:Treatment and control of bovine hypodermosis with ivermectin long-acting injection (IVOMEC® GOLD).
[So] Source:Parasit Vectors;9(1):551, 2016 Oct 18.
[Is] ISSN:1756-3305
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: The studies reported here were conducted to assess the efficacy of ivermectin long-acting injection (IVM LAI; IVOMEC® GOLD, Merial; 3.15 % w/v ivermectin) for the treatment and control of natural infestations of cattle by Hypoderma bovis and Hypoderma lineatum, which are the most economically important oestrid flies of cattle in the northern hemisphere. METHODS: Cattle selected from herds with a history of Hypoderma infestation were grouped into blocks of three (Italy, 33 cattle; Germany, 30 cattle) or two (USA, 16 cattle) animals each, on the basis of positivity at the pre-treatment anti-Hypoderma antibody titres. Within each block, animals were randomly allocated to one of the following treatment regimens: saline (control); IVM LAI, administered at the predicted time of occurrence of first-instar larvae (Italy, Germany, USA); IVM LAI, administered at the predicted time of occurrence of second- and/or third-instar larvae (Italy, Germany). All treatments were administered by subcutaneous injection in correspondence of the area anterior to the shoulder at 1 ml/50 kg body weight, which corresponds to 630 mcg IVM/kg for IVM LAI. RESULTS: No Hypoderma larvae emerged from animals treated with IVM LAI, whereas live H. lineatum (Italy) or H. bovis (Germany, USA) larvae were collected from saline-treated animals (P < 0.01). No adverse reactions to treatments were in any of the animals enrolled in the study. CONCLUSIONS: The results from this study demonstrate that ivermectin in a long-acting formulation is 100 % efficacious in the treatment of cattle naturally infested by H. bovis and H. lineatum larvae at all stages of development. IVM LAI can, therefore, be used as 'prophylactic' treatment for Hypoderma spp. infestations in absence of external evidence of their presence and thus prior to skin and carcass damage, and as 'therapeutic' treatment, when warbles are already present.
[Mh] Termos MeSH primário: Doenças dos Bovinos/tratamento farmacológico
Hipodermose/veterinária
Ivermectina/administração & dosagem
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/parasitologia
Preparações de Ação Retardada
Dípteros/efeitos dos fármacos
Alemanha
Hipodermose/tratamento farmacológico
Hipodermose/parasitologia
Injeções Subcutâneas
Itália
Ivermectina/química
Ivermectina/uso terapêutico
Larva/efeitos dos fármacos
Pele/parasitologia
Estados Unidos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Delayed-Action Preparations); 70288-86-7 (Ivermectin)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161021
[St] Status:MEDLINE


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[PMID]:27594289
[Au] Autor:Sayin Ipek DN
[Ad] Endereço:Department of Parasitology, Dicle University School of Veterinary, Diyarbakir, Turkey. dnsayin@hotmail.com.
[Ti] Título:Molecular Characterization and Chronobiology of Hypodermosis in Cattle Slaughtered in the Diyarbakir Province of Turkey.
[So] Source:Turkiye Parazitol Derg;40(2):86-9, 2016 Jun.
[Is] ISSN:2146-3077
[Cp] País de publicação:Turkey
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: The aim of present study was to investigate the chronobiology and identification of Hypoderma species in cattle slaughtered in the Diyarbakir Province of Turkey. METHODS: In total, 736 hides and subcutaneous tissue of slaughtered cattle were examined for the presence of second- and third-instar larvae in the slaughterhouse between November 2012 and May 2013. Third-instar larvae were collected from the slaughterhouses, and gDNA isolates were examined by PCR-RFLP analysis of the cytochrome c oxidase I (COI) gene of mt-DNA using TaqI enzyme. RESULTS: In total, 62 out of 736 cattle (8.42%) were found to be positive for Hypoderma larvae. A total of 328 (90 second- and 238 third-instar) Hypoderma larvae were detected in the hide and subcutaneous tissue of the back of infested cattle. All the 238 third-instar larvae (100%) were identified as H. bovis by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. The mean number of Hypoderma larvae in each cow was 5.29% (62/736). In the examined cattle, second-instar larvae were observed starting from the second week of January and subcutaneous nodules were found until the last week of April. CONCLUSION: H. bovis was the dominant species detected in the Diyarbakir Province.
[Mh] Termos MeSH primário: Doenças dos Bovinos/epidemiologia
Dípteros/classificação
Hipodermose/veterinária
[Mh] Termos MeSH secundário: Matadouros
Animais
Bovinos
DNA Mitocondrial/genética
Hipodermose/epidemiologia
Larva
Mitocôndrias/genética
Reação em Cadeia da Polimerase
Polimorfismo de Fragmento de Restrição
Turquia/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160906
[St] Status:MEDLINE
[do] DOI:10.5152/tpd.2016.4812


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[PMID]:24578259
[Au] Autor:Kudrnácová M; Langrová I; Marsálek M; Jankovská I; Schánková S; Brozová A; Trunecková J
[Ad] Endereço:Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences in Prague, 165 21, Praha 6 - Suchdol, Czech Republic, kudrnacovam@af.czu.cz.
[Ti] Título:A 4-years monitoring of Hypoderma diana in horses from the Czech Republic.
[So] Source:Parasitol Res;113(5):1735-8, 2014 May.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The occurrence of Hypoderma diana (Diptera: Hypodermatidae) in a herd of 15 horses was observed during a 4-year period (2010-2013) in northwest Bohemia. During this period, infestation by the warble fly H. diana increased from 12.5% in 2010 to 53.3% in 2013. Nodules were observed on the neck, back, stomach, legs, and head. The incidence of H. diana was probably influenced by the presence of a specific host mouflon (Ovis orientalis musimon).
[Mh] Termos MeSH primário: Dípteros
Doenças dos Cavalos/epidemiologia
Cavalos/parasitologia
Hipodermose/veterinária
[Mh] Termos MeSH secundário: Animais
República Tcheca/epidemiologia
Feminino
Hipodermose/epidemiologia
Masculino
Carneiro Doméstico/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1410
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140301
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-014-3818-8


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[PMID]:24394177
[Au] Autor:Pfister K; Charbon J-
[Ad] Endereço:1Institut de Biologie, Université de Neuchâtel, 2Vergleichende Tropenmedizin und Parasitologie, Tierärztliche Fakultät, Ludwig-Maximilians-Universität München, 3Cabinet Vétérinaire Sieber & Charbon Sàrl, Estavayer-le-Lac.
[Ti] Título:[Control of bovine hypodermosis in Switzerland; looking back].
[Ti] Título:Die erfolgreiche Bekämpfung der Hypodermose in der Schweiz: Ein Blick zurück..
[So] Source:Schweiz Arch Tierheilkd;156(1):39-43, 2014 Jan.
[Is] ISSN:0036-7281
[Cp] País de publicação:Switzerland
[La] Idioma:ger
[Ab] Resumo:For many years, hypodermosis control - which started in the 1920's - was unsatisfactory, partly due to a lack of efficacy or a too high toxicity of the available products. An improved control became possible with the introduction (1957) of the organophosphate Metrifonate (Neguvon®, Bayer AG). Subsequent large-scale campaigns according to the Federal Ordinance on epizootic diseases (1967) quite reduced hypodermosis in Switzerland. However, due to a limited use of the product (only young and alpine-grazing cattle were allowed to be treated, administratively indicated maximum dose, side-effects) and its incomplete efficacy, a full control was not possible. The decision to maintain hypodermosis as a "notifiable" disease then allowed further epidemiological studies. In 2000/2001 a concerted action in close cooperation with the cantonal veterinarians allowed a consequent and systematic treatment of all cattle in all endemic areas by the large-scale use of Eprinomectin (Eprinex®, Merial Inc.) for dairy cattle and of Ivermectin (Merial Inc.) as microdose "off-label" for young cattle has led to a rapid and sustainable success.
[Mh] Termos MeSH primário: Doenças dos Bovinos/prevenção & controle
Hipodermose/veterinária
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/história
História do Século XX
História do Século XXI
Hipodermose/história
Hipodermose/prevenção & controle
Inseticidas/uso terapêutico
Ivermectina/análogos & derivados
Ivermectina/uso terapêutico
[Pt] Tipo de publicação:HISTORICAL ARTICLE; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); 70288-86-7 (Ivermectin); 75KP30FD8O (eprinomectin)
[Em] Mês de entrada:1502
[Cu] Atualização por classe:161125
[Lr] Data última revisão:
161125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140108
[St] Status:MEDLINE
[do] DOI:10.1024/0036-7281/a000545


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[PMID]:24192621
[Au] Autor:Oguz B
[Ad] Endereço:Yüzüncü Yil Üniversitesi Veteriner Fakültesi, Parazitoloji Anabilim Dali, Van, Türkiye.
[Ti] Título:[Cytochrome oxidase I gene sequences that cause hypodermosis cattle species by PCR-RFLP technique investigation].
[Ti] Título:Sigirlarda Hypodermosise Sebep Olan Türlerin Sitokrom Oksidaz I Gen Dizilerinin PCR-RFLP Teknigi ile Arastirilmasi.
[So] Source:Turkiye Parazitol Derg;37(3):190-4, 2013.
[Is] ISSN:2146-3077
[Cp] País de publicação:Turkey
[La] Idioma:tur
[Ab] Resumo:OBJECTIVE: The importance for the health of cattle Hypodermosis (Nokra) species that cause disease by Polymerase Chain Reaction- Restriction Fragment Length Polymorphism (PCR-RFLP) method was investigated. METHODS: The molecular analysis of Hypoderma species specific sequences located on the Cytochrome C Oxidase I (COI) (mtDNA) gene by PCR-RFLP method was successfully carried out. RESULTS: DNAs were obtained using the extraction kit and Polymerase chain reaction (PCR) foe amplification of the mitochondrial DNA gene yielded for 688bp COI gene on agarose gel. Using the PCR amplification and HinfI, RsaI and TaqI restriction enzymes, mitochondrial DNA gene regions were amplified with the RFLP technique. CONCLUSION: The mitochondrial COI gene region of the genus Hypoderma for the molecular identification of potential answers questions, such as the level, which indicates that it may be very useful. In this study, in the city of Van, it is also important that the Hypoderma species be defined in terms of the first molecular study.
[Mh] Termos MeSH primário: Dípteros/genética
Complexo IV da Cadeia de Transporte de Elétrons/genética
Genes de Insetos
[Mh] Termos MeSH secundário: Animais
Sequência de Bases
Bovinos
Doenças dos Bovinos/parasitologia
DNA Mitocondrial/genética
Hipodermose/parasitologia
Hipodermose/veterinária
Mitocôndrias/genética
Reação em Cadeia da Polimerase
Polimorfismo de Fragmento de Restrição
[Pt] Tipo de publicação:ENGLISH ABSTRACT; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (DNA, Mitochondrial); EC 1.9.3.1 (Electron Transport Complex IV)
[Em] Mês de entrada:1405
[Cu] Atualização por classe:161021
[Lr] Data última revisão:
161021
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:131107
[St] Status:MEDLINE
[do] DOI:10.5152/tpd.2013.42


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[PMID]:23697827
[Au] Autor:Kan B; Asbakk K; Fossen K; Nilssen A; Panadero R; Otranto D
[Ti] Título:Reindeer warble fly-associated human myiasis, Scandinavia.
[So] Source:Emerg Infect Dis;19(5):830-2, 2013 May.
[Is] ISSN:1080-6059
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Dípteros/fisiologia
Olho/parasitologia
Hipodermose/parasitologia
Larva/fisiologia
Linfonodos/parasitologia
[Mh] Termos MeSH secundário: Adulto
Animais
Antiparasitários/uso terapêutico
Criança
Dípteros/efeitos dos fármacos
Olho/patologia
Feminino
Seres Humanos
Hipodermose/tratamento farmacológico
Hipodermose/epidemiologia
Hipodermose/cirurgia
Ivermectina/uso terapêutico
Larva/efeitos dos fármacos
Linfonodos/patologia
Masculino
Meia-Idade
Procedimentos Cirúrgicos Oftalmológicos
Contagem de Ovos de Parasitas
Rena/parasitologia
Países Escandinavos e Nórdicos/epidemiologia
[Pt] Tipo de publicação:LETTER
[Nm] Nome de substância:
0 (Antiparasitic Agents); 70288-86-7 (Ivermectin)
[Em] Mês de entrada:1310
[Cu] Atualização por classe:150426
[Lr] Data última revisão:
150426
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130524
[St] Status:MEDLINE
[do] DOI:10.3201/eid1905.130145


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[PMID]:23273587
[Au] Autor:Rehbein S; Holste JE; Smith LL; Lloyd JL
[Ad] Endereço:Merial GmbH, Kathrinenhof Research Center, Walchenseestr. 8-12, 83101 Rohrdorf, Germany. steffen.rehbein@merial.com
[Ti] Título:The efficacy of eprinomectin extended-release injection against Hypoderma spp. (Diptera: Oestridae) in cattle.
[So] Source:Vet Parasitol;192(4):353-8, 2013 Mar 01.
[Is] ISSN:1873-2550
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The efficacy of eprinomectin in an extended-release injection (ERI) formulation was determined in cattle harboring naturally acquired infestations of first- or second- and third-stage larvae of Hypoderma spp. in three studies conducted according to the same protocol in the USA (two studies) and Germany (one study). Thirty cattle sourced from herds with a history of Hypoderma infestation were included in each study. Cattle were formed into replicates of three animals each on the basis of pre-treatment anti-Hypoderma antibody titers. Within replicates each animal was randomly allocated to one of the following treatments: ERI vehicle (control) at 1 mL/50 kg bodyweight, administered once on Day 0; Eprinomectin 5% ERI at 1 mL/50 kg bodyweight (1.0 mg eprinomectin/kg), administered once on Day 0 (when larvae were expected to be first instars); or Eprinomectin 5% ERI at 1 mL/50 kg bodyweight (1.0 mg eprinomectin/kg), administered once when larvae were second or third instars (study dependent, Day 73, 119, or 140). Treatments were administered by subcutaneous injection in front of the shoulder. In all studies, emerging and/or expressed Hypoderma larvae were recovered, speciated, and counted and viability was determined. Eprinomectin LAI treatment was 100% (p<0.05) efficacious against first- and second- or third-stage larvae of Hypoderma bovis (two studies) and Hypoderma lineatum (one study). All animals accepted the treatment well. No adverse reaction to treatments was observed in any animal in any study.
[Mh] Termos MeSH primário: Antiparasitários/uso terapêutico
Doenças dos Bovinos/tratamento farmacológico
Dípteros/fisiologia
Hipodermose/veterinária
Ivermectina/análogos & derivados
[Mh] Termos MeSH secundário: Animais
Antiparasitários/administração & dosagem
Antiparasitários/farmacologia
Bovinos
Dípteros/efeitos dos fármacos
Feminino
Hipodermose/tratamento farmacológico
Injeções
Ivermectina/administração & dosagem
Ivermectina/farmacologia
Ivermectina/uso terapêutico
Larva
Masculino
Distribuição Aleatória
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antiparasitic Agents); 70288-86-7 (Ivermectin); 75KP30FD8O (eprinomectin)
[Em] Mês de entrada:1303
[Cu] Atualização por classe:161125
[Lr] Data última revisão:
161125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130101
[St] Status:MEDLINE


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[PMID]:23218223
[Au] Autor:Panadero R; López C; Vázquez L; Díaz P; Pérez A; Cabanelas E; Morrondo P; Díez-Baños P
[Ad] Endereço:Departamento de Patología Animal: Sanidad Animal (INVESAGA Group), Facultad de Veterinaria, Universidad de Santiago de Compostela, 27071 Lugo, Spain. rosario.panadero@usc.es
[Ti] Título:Effect of reinfestations on systemic immune responses in cattle naturally infested by Hypoderma sp. (Diptera: Oestridae).
[So] Source:Vet Parasitol;193(1-3):238-44, 2013 Mar 31.
[Is] ISSN:1873-2550
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Systemic humoral and cellular immune responses were studied during natural infestations by Hypoderma lineatum in cattle at their first (G-1) and second exposure (G-2). Four out of seven animals in G-1 were palpation positive, with a mean intensity of 11.2 (12.81SD) warbles; the same proportion (4/7) presented warbles in G-2 but the intensity was 3.7 (2.21SD). The evolution of total IgG levels was characterized by a noticeable increment coinciding with the presence of warbles on the back, especially in G-2. The IgG1 isotype displayed a parallel evolution in both groups, with peak values prior to the appearance of first warbles. The IgG2 subclass followed an irregular pattern in both groups and IgM maintained low and constant levels throughout the study, mainly in G-1. CD4/CD8 ratios showed a predominance of CD4(+) throughout the infestation, principally in G-2 during the warble season. The evolution of IFN-γ in G-2 was constant, whereas in G-1 there was a gradual descent until warble emergence. The dynamics of the IL-10 differed between G-1 and G-2, although both groups showed a significant drop after the exit of the larvae that could be implicated in the termination of the inflammatory response. IL-4 and TNF-α levels did not show differences between groups. Our results suggest that the resistance mechanisms would become more apparent at the latest stages of the infestation by Hypoderma, supporting the hypothesis that considerable larval destruction in sensitized animals might take place after their arrival to the back.
[Mh] Termos MeSH primário: Doenças dos Bovinos/parasitologia
Dípteros/imunologia
Hipodermose/veterinária
Imunidade Humoral/fisiologia
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/sangue
Doenças dos Bovinos/imunologia
Hipodermose/sangue
Hipodermose/imunologia
Imunoglobulina G/sangue
Larva
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Immunoglobulin G)
[Em] Mês de entrada:1308
[Cu] Atualização por classe:130218
[Lr] Data última revisão:
130218
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:121211
[St] Status:MEDLINE


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[PMID]:23520749
[Au] Autor:Khan MQ; Irshad H; Jahangir M; Razzaq A
[Ad] Endereço:Animal Sciences Institute, National Agricultural Research Centre, P.O. National Institute of Health, Park Road, Islamabad, 45500, Pakistan. qasim1952@yahoo.co.uk
[Ti] Título:Studies on the biology, chemotherapy and distribution of warble fly in Pakistan.
[So] Source:Rev Sci Tech;31(3):959-69, 2012 Dec.
[Is] ISSN:0253-1933
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:This paper presents data on the prevalence, biology and control of warble fly infestation (WFI) in cattle and goats in Pakistan. A questionnaire for obtaining information on biology and prevalence was circulated amongst field veterinary staff and livestock farmers in all five provinces (Punjab, Sindh, Balochistan, Khyber Pakhtunkhwa [KPK] and Gilgit-Baltistan) and in the Federally Administered Tribal Areas of the country. A total of 1,019 questionnaires were received (Punjab = 296, Sindh = 246, KPK = 318, Balochistan = 151, Gilgit-Baltistan = 8). Warble fly infestation was reported from each province and from the federally administered tribal areas, particularly from hilly, semi-hilly and sandy desert areas (the Cholistan desert, which adjoins the Rehim Yar Khan, Bahawalpur and Bahawalnagar districts, and the Nara area of Sanghar district). Warbles (nodules) started appearing on the backs of the infested animals from September through December and disappeared from October through March. The prevalence of WFI varied from 5% to 75%. It was highest in hilly areas and gradually decreased towards the plains. A map was developed of warble fly-infested areas. Four field trials were conducted to study the efficacy of different drugs indicated for the control of warble fly infestation. A total of 2,094 cattle and 3,876 goats were given five different injectables (avermectins); namely, Ivomec, Endectin, Euvectin, Dectomax and Promectin (ivermectin) during the first three weeks of September. A control group was given normal saline. All the medicines were found to be effective in controlling infestation.
[Mh] Termos MeSH primário: Doenças dos Bovinos/parasitologia
Dípteros/fisiologia
Doenças das Cabras/parasitologia
Hipodermose/veterinária
Inseticidas/uso terapêutico
Ivermectina/uso terapêutico
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/tratamento farmacológico
Doenças dos Bovinos/epidemiologia
Doenças dos Bovinos/prevenção & controle
Meio Ambiente
Doenças das Cabras/tratamento farmacológico
Doenças das Cabras/epidemiologia
Doenças das Cabras/prevenção & controle
Cabras
Hipodermose/tratamento farmacológico
Hipodermose/epidemiologia
Hipodermose/prevenção & controle
Ivermectina/análogos & derivados
Paquistão/epidemiologia
Prevalência
Estações do Ano
Inquéritos e Questionários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Insecticides); 70288-86-7 (Ivermectin); KGD7A54H5P (doramectin)
[Em] Mês de entrada:1405
[Cu] Atualização por classe:161125
[Lr] Data última revisão:
161125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130326
[St] Status:MEDLINE


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[PMID]:21051151
[Au] Autor:Colwell DD
[Ad] Endereço:Agriculture and Agri-Food Canada, Sustainable Production Systems, Lethbridge Research Centre, 5403 1st Ave. S., Lethbridge, Alberta, Canada. doug.colwell@agr.gc.ca
[Ti] Título:Hidden antigens from third instar Hypoderma lineatum: impact of immunization on larval survival in artificial infestations.
[So] Source:Vet Parasitol;175(3-4):313-9, 2011 Feb 10.
[Is] ISSN:1873-2550
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Soluble fractions of Hypoderma lineatum third instar fat body, haemocytes and haemolymph were formulated with Quil A and used to immunize four groups of calves while a fifth group remained untreated. Calves received two subcutaneous injections of the soluble fractions, or adjuvant only delivered two weeks apart. Two weeks after the last injection the calves were exposed to 50 newly hatched larvae of H. lineatum which were placed on the skin and allowed to penetrate. Survival of larval stages was monitored by weekly palpation and collection of emergent third instars. Antibody responses to the immunogens were evaluated by immunoblots and following infestation antibody responses to first instar antigens were evaluated by an ELISA. Non-immunized calves and calves injected with adjuvant were all palpation positive for cattle grubs. In groups immunized with fat body, haemocyte and haemolymph components 100%, 33% and 33% were palpation positive for grubs respectively. First instar mortality, as reflected in palpable grubs, was high in the groups receiving injections with tissue components (99.3%, 95.1%, 95.8%, 83.9 and 80.4% mortality for those groups receiving fat body, haemocyte, haemolymph, adjuvant or control respectively). Second and third instar mortality was also higher in the immunized groups (100.0%, 91.7%, 91.7% for fat body, haemocyte, and haemolymph respectively) in comparison to the adjuvant only (14.0%) and unvaccinated (33.3%) groups. No viable flies emerged from pupae originating from larvae emergent from any of the immunized groups. Calves receiving the tissue extracts developed antibodies to several protein components following the second immunization which were still present 13 weeks post-infestation. Several proteins appeared to be common among the three tissue extracts and were recognized by antibodies from the immunized calves. All groups of calves became positive for antibodies to first instar antigens, although in some immunized calves the antibodies were transient.
[Mh] Termos MeSH primário: Antígenos/imunologia
Doenças dos Bovinos/imunologia
Dípteros/imunologia
Hipodermose/veterinária
Imunização/veterinária
[Mh] Termos MeSH secundário: Animais
Anticorpos/sangue
Bovinos
Doenças dos Bovinos/sangue
Doenças dos Bovinos/prevenção & controle
Dípteros/patogenicidade
Ensaio de Imunoadsorção Enzimática/veterinária
Corpo Adiposo/química
Corpo Adiposo/imunologia
Hemócitos/química
Hemócitos/imunologia
Hemolinfa/química
Hemolinfa/imunologia
Hipodermose/sangue
Hipodermose/imunologia
Hipodermose/prevenção & controle
Imunização/métodos
Larva/imunologia
Larva/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antibodies); 0 (Antigens)
[Em] Mês de entrada:1202
[Cu] Atualização por classe:110124
[Lr] Data última revisão:
110124
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:101106
[St] Status:MEDLINE
[do] DOI:10.1016/j.vetpar.2010.10.013



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