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Pesquisa : B01.050.150.900.649.313.992.750 [Categoria DeCS]
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  1 / 4268 MEDLINE  
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[PMID]:29192042
[Ti] Título:Disease surveillance in England and Wales, November 2017.
[So] Source:Vet Rec;181(22):585-589, 2017 12.
[Is] ISSN:2042-7670
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Doenças dos Animais/epidemiologia
Surtos de Doenças/veterinária
Vigilância de Evento Sentinela/veterinária
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/epidemiologia
Galinhas
Inglaterra/epidemiologia
Órgãos Governamentais
Internacionalidade
Doenças das Aves Domésticas/epidemiologia
Sciuridae
Ovinos
Doenças dos Ovinos/epidemiologia
Suínos
Doenças dos Suínos/epidemiologia
País de Gales/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171202
[St] Status:MEDLINE
[do] DOI:10.1136/vr.j5595


  2 / 4268 MEDLINE  
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[PMID]:28452286
[Au] Autor:Ikeno T; Williams CT; Buck CL; Barnes BM; Yan L
[Ad] Endereço:Department of Psychology, Michigan State University, East Lansing, Michigan.
[Ti] Título:Clock Gene Expression in the Suprachiasmatic Nucleus of Hibernating Arctic Ground Squirrels.
[So] Source:J Biol Rhythms;32(3):246-256, 2017 Jun.
[Is] ISSN:1552-4531
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Most organisms have a circadian system, entrained to daily light-dark cycles, that regulates 24-h rhythms of physiology and behavior. It is unclear, however, how circadian systems function in animals that exhibit seasonal metabolic suppression, particularly when this coincides with the long-term absence of a day-night cycle. The arctic ground squirrel, Urocytellus parryii, is a medium-sized, semi-fossorial rodent that appears above-ground daily during its short active season in spring and summer before re-entering a constantly dark burrow for 6 to 9 months of hibernation. This hibernation consists of multiple week-long torpor bouts interrupted by short (< 20 h) arousal intervals when metabolism and body temperature (Tb) return to normal levels. Here, we used immunohistochemistry to measure the expression of daily or circadian rhythms of the protein products of 3 circadian clock genes, PER1, PER2, BMAL1, and the neural activity marker c-FOS in the suprachiasmatic nucleus (SCN) of arctic ground squirrels before, during, and after the first torpor bout of hibernation. Before torpor, while under 12:12-h light:dark conditions, animals showed significant daily rhythms in their Tb, as well as in protein expression levels of PER1 and PER2, but not BMAL1. Upon entering first torpor (Tb < 30°C), animals were moved into constant darkness. When sampled at 6-h intervals-beginning 24 h after the last light out, with Tb 3°C to 4°C-there were no circadian oscillations in PER1, PER2, or c-FOS expression. Sampling across 24 h during the first spontaneous arousal interval, c-FOS expression was elevated only when Tb reached 20°C and PER1 and PER2 expression did not show any Tb- or time-dependent changes. These results suggest that the central circadian clock might have stopped functioning during hibernation in this species, and the timing of arousal from torpor in arctic ground squirrels is unlikely to be controlled by the circadian clock within the SCN.
[Mh] Termos MeSH primário: Relógios Circadianos/genética
Hibernação
Sciuridae/genética
Sciuridae/fisiologia
Núcleo Supraquiasmático/fisiologia
[Mh] Termos MeSH secundário: Fatores de Transcrição ARNTL/genética
Animais
Regiões Árticas
Temperatura Corporal
Ritmo Circadiano/fisiologia
Hibernação/genética
Luz
Proteínas Circadianas Period/genética
Fotoperíodo
Proteínas Proto-Oncogênicas c-fos/genética
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (ARNTL Transcription Factors); 0 (Period Circadian Proteins); 0 (Proto-Oncogene Proteins c-fos)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1177/0748730417702246


  3 / 4268 MEDLINE  
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[PMID]:29405685
[Au] Autor:Porshakov AM; Yakovlev SA; Kurnyaeva AD
[Ti] Título:[Gamasid mites of small mammals in the semi-desert territories of the Saratov Trans-Volga region].
[So] Source:Parazitologiia;51(2):132-42, 2017 Mar-Apr.
[Is] ISSN:0031-1847
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:The paper contains the data on the species composition and comparative analysis of gamaside mites, parasitizing on small mammals in the semi-desert territories of Saratov trans-Volga region. On the basis of the results of investigations conducted in the Aleksandrovo-Gaisky District in 2008-2013, 18 species of gamaside mites (9 genusus, 5 families) have been recorded. Nine species of maaside mites, which were not found in semi-desert zone earlier were revealed, includiding Hypoaspis (Stratiolaelaps) miles Berlese, 1882, H. (Geolaelaps) heselhausi Oudemans, 1912, H. (G.) lubrica Oudemans et Voigts, 1604, G. et. R. Canestrini, 1881, Haemogamasus citelli Bregetova et Nelzina, 1952, Hirstionyssus eusoricis Bregetova, 1956, Hi. ellobii Bregetova, 1653; five of these species are new for the territory of Saratov Province. As a result of the study of semi-desert zone of Saratov trans-Volga region and taking into account literary data, parasitic fauna of small mammals of Aleksandrovo-Gaisky District was expanded up to 21 species, and of Saratov Province, up to 44 species of gamasid mites.
[Mh] Termos MeSH primário: Infestações por Ácaros/veterinária
Ácaros/classificação
Filogenia
Doenças dos Roedores/epidemiologia
[Mh] Termos MeSH secundário: Animais
Arvicolinae/parasitologia
Clima Desértico
Pradaria
Especificidade de Hospedeiro
Camundongos
Infestações por Ácaros/epidemiologia
Ácaros/fisiologia
Federação Russa/epidemiologia
Sciuridae/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180207
[St] Status:MEDLINE


  4 / 4268 MEDLINE  
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[PMID]:29233692
[Au] Autor:Tsukamoto D; Ito M; Takamatsu N
[Ad] Endereço:Laboratory of Molecular Biology, Department of Biosciences, School of Science, Kitasato University, 1-15-1 Kitasato, Minamiku, Sagamihara, 252-0373, Japan. Electronic address: tsukamot@kitasato-u.ac.jp.
[Ti] Título:Epigenetic regulation of hibernation-associated HP-20 and HP-27 gene transcription in chipmunk liver.
[So] Source:Biochem Biophys Res Commun;495(2):1758-1765, 2018 01 08.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The chipmunk hibernation-related proteins (HPs) HP-20 and HP-27 are components of a 140-kDa complex that dramatically decreases in the blood during hibernation. The HP-20 and HP-27 genes are expressed specifically in the liver and are downregulated in hibernating chipmunks. Hibernation-associated physiological changes are assumed to be under genetic control. Therefore, to elucidate the molecular mechanisms of hibernation, here we examined the mechanisms behind the altered HP-20 and HP-27 gene expression in nonhibernating versus hibernating chipmunks. Chromatin immunoprecipitation (ChIP) analyses revealed that histone H3 on the HP-20 and HP-27 gene promoters was highly acetylated at lysine (K) 9 and K14 and highly trimethylated at K4 in the liver of nonhibernating chipmunks, while these active histone modifications were nearly absent in hibernating chipmunks. Furthermore, histone acetyltransferases and a histone methyltransferase were associated with the HP-20 and HP-27 gene promoters primarily in nonhibernating chipmunks. Consistent with a previous finding that HNF-1 and USF can activate HP-20 and HP-27 gene transcription by binding to the proximal promoter region, ChIP-quantitative PCR (qPCR) analyses revealed that significantly less HNF-1 and USF were bound to these gene promoters in hibernating than in nonhibernating chipmunks. These findings collectively indicated that the hibernation-associated HP-20 and HP-27 gene expression is epigenetically regulated at the transcriptional level by the binding of HNF-1 and USF to their proximal promoters, and that histone modification has a key role in hibernation-associated transcriptional regulation.
[Mh] Termos MeSH primário: Proteínas Sanguíneas/genética
Proteínas Sanguíneas/fisiologia
Hibernação/genética
Hibernação/fisiologia
Sciuridae/genética
Sciuridae/fisiologia
[Mh] Termos MeSH secundário: Animais
Sequência de Bases
Epigênese Genética
Expressão Gênica
Fator 1 Nuclear de Hepatócito/metabolismo
Histonas/metabolismo
Masculino
Regiões Promotoras Genéticas
Ligação Proteica
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Transcrição Genética
Fatores Estimuladores Upstream/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Blood Proteins); 0 (HP-20 protein, Tamias asiaticus); 0 (HP-27 protein, Tamias asiaticus); 0 (Histones); 0 (RNA, Messenger); 0 (Upstream Stimulatory Factors); 126548-29-6 (Hepatocyte Nuclear Factor 1)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171214
[St] Status:MEDLINE


  5 / 4268 MEDLINE  
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[PMID]:29232397
[Au] Autor:Straub MH; Roy AN; Martin A; Sholty KE; Stephenson N; Foley JE
[Ad] Endereço:Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, United States of America.
[Ti] Título:Distribution and prevalence of vector-borne diseases in California chipmunks (Tamias spp.).
[So] Source:PLoS One;12(12):e0189352, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:California, with 13 chipmunk (Tamias) species, has more than any other state or country, occupying habitats ranging from chaparral to the high peaks of the Sierra Nevada. Chipmunks host zoonotic pathogens including Yersinia pestis, Anaplasma phagocytophilum, relapsing fever (RF) Borrelia spp., Borrelia burgdorferi, and spotted fever group (SFG) Rickettsia species. Chipmunk species are often not differentiated by public health workers, yet different species utilize different ecological niches and may have intrinsically different capacities for maintaining vector-borne pathogens and infecting vectors. We surveyed over 700 individuals from nine species of chipmunks throughout California for exposure to and infection by Y. pestis, A. phagocytophilum, RF Borrelia spp., Borrelia burgdorferi, and SFG Rickettsia species. DNA of all five pathogens was found and all chipmunks except Merriam's chipmunk (T. merriami) were PCR-positive for at least one of the pathogens. Anaplasma phagocytophilum was most common (40.0%, 2/5) in Sonoma chipmunks (T. sonomae) from Marin county and B. burgdorferi most common (37.5%, 27/72) in redwood chipmunks (T. ochrogenys) from Mendocino county. RF Borrelia spp. was detected in 2% (6/297) of redwood chipmunks in Mendocino county and 10% (1/10) of both least (T. minimus) and lodgepole (T. speciosus) chipmunks in the western Sierra. Exposure to SFG Rickettsia spp. was found in the Northern Coastal region (Del Norte, Humboldt and Mendocino counties) and in the northern and western Sierra in several species of chipmunks. Y. pestis infection was found only in the western Sierra-in a yellow-pine (T. amoenus) and a long-eared (T. quadrimaculatus) chipmunk. Though more data are needed to thoroughly understand the roles that different chipmunk species play in disease transmission, our findings suggest that some chipmunk species may be more important to the maintenance of vector-borne diseases than others within each geographic area.
[Mh] Termos MeSH primário: Vetores de Doenças
Sciuridae/microbiologia
[Mh] Termos MeSH secundário: Animais
California
Exposição Ambiental
Prevalência
Sciuridae/classificação
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180104
[Lr] Data última revisão:
180104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171213
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189352


  6 / 4268 MEDLINE  
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[PMID]:28748739
[Au] Autor:Ahamad MNU; Ali ME; Hossain MAM; Asing A; Sultana S; Jahurul MHA
[Ad] Endereço:a Nanotechnology and Catalysis Research Center, Institute of Graduate Studies , University of Malaya , Kuala Lumpur , Malaysia.
[Ti] Título:Multiplex PCR assay discriminates rabbit, rat and squirrel meat in food chain.
[So] Source:Food Addit Contam Part A Chem Anal Control Expo Risk Assess;34(12):2043-2057, 2017 Dec.
[Is] ISSN:1944-0057
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Rabbit meat is receiving increasing attention because it contains a high level of proteins with relatively little fat. On the other hand, squirrel meat is served in upper-class meals in certain countries, so is sold at higher prices. The other side of the coin is rat meat, which has family ties with rabbit and squirrel but poses substantial threats to public health because it is a potential carrier of several zoonotic organisms. Recently, rat meat was mislabelled and sold as lamb after chemical modification. Thus, the chances of rabbit and squirrel meat substitution by rat meat cannot be ruled out. For the first time, a multiplex PCR assay was developed in Malaysia for the discriminatory identification of rat, rabbit and squirrel in the food chain. Rabbit (123 bp), rat (108 bp) and squirrel (243 bp) targets were amplified from ATP6 and cytb genes, along with a eukaryotic internal control (141bp). The products were sequenced and cross-tested against 22 species. A total of 81 reference samples and 72 meatball specimens were screened to validate the assay. Analyte stability was evaluated through boiling, autoclaving and micro-oven cooking. The tested lower limits of detection were 0.01 ng DNA for pure meat and 0.1% for meatballs.
[Mh] Termos MeSH primário: Contaminação de Alimentos/análise
Abastecimento de Alimentos
Carne/análise
Reação em Cadeia da Polimerase Multiplex
Coelhos/genética
Ratos/genética
Sciuridae/genética
[Mh] Termos MeSH secundário: Animais
Citocromos b/genética
Malásia
ATPases Mitocondriais Próton-Translocadoras/genética
ATPases Mitocondriais Próton-Translocadoras/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9035-37-4 (Cytochromes b); EC 3.6.3.- (Mitochondrial Proton-Translocating ATPases)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170728
[St] Status:MEDLINE
[do] DOI:10.1080/19440049.2017.1359752


  7 / 4268 MEDLINE  
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[PMID]:28542832
[Au] Autor:Luan Y; Ou J; Kunze VP; Qiao F; Wang Y; Wei L; Li W; Xie Z
[Ad] Endereço:State Key Laboratory of Ophthalmology, Guangdong Provincial Key Lab of Ophthalmology, Visual Science, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
[Ti] Título:Integrated transcriptomic and metabolomic analysis reveals adaptive changes of hibernating retinas.
[So] Source:J Cell Physiol;233(2):1434-1445, 2018 Feb.
[Is] ISSN:1097-4652
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Hibernation is a seasonally adaptive strategy that allows hibernators to live through extremely cold conditions. Despite the profound reduction of blood flow to the retinas, hibernation causes no lasting retinal injury. Instead, hibernators show an increased tolerance to ischemic insults during the hibernation period. To understand the molecular changes of the retinas in response to hibernation, we applied an integrative transcriptome and metabolome analysis to explore changes in gene expression and metabolites of 13-lined ground squirrel retinas during hibernation. Metabolomic analysis showed a global decrease of ATP synthesis in hibernating retinas. Decreased glucose and galactose, increased beta-oxidation of carnitine and decreased storage of some amino acids in hibernating retinas indicated a shift of fuel use from carbohydrates to lipids and alternative usage of amino acids. Transcriptomic analysis revealed that the down-regulated genes were enriched in DNA-templated transcription and immune-related functions, while the up-regulated genes were enriched in mitochondrial inner membrane and DNA packaging-related functions. We further showed that a subset of genes underwent active alternative splicing events in response to hibernation. Finally, integrative analysis of the transcriptome and metabolome confirmed the shift of fuel use in the hibernating retina by the regulation of catabolism of amino acids and lipids. Through transcriptomic and metabolomic data, our analysis revealed the altered state of mitochondrial oxidative phosphorylation and the shift of energy source in the hibernating retina, advancing our understanding of the molecular mechanisms employed by hibernators. The data will also serve as a useful resource for the ocular and hibernation research communities.
[Mh] Termos MeSH primário: Metabolismo Energético
Proteínas do Olho/genética
Proteínas do Olho/metabolismo
Perfilação da Expressão Gênica/métodos
Hibernação
Metabolômica/métodos
Retina/metabolismo
Sciuridae/genética
Sciuridae/metabolismo
Transcriptoma
[Mh] Termos MeSH secundário: Adaptação Fisiológica
Trifosfato de Adenosina/metabolismo
Processamento Alternativo
Aminoácidos/metabolismo
Animais
Cromatografia Líquida
Carboidratos da Dieta/metabolismo
Gorduras na Dieta/metabolismo
Feminino
Cromatografia Gasosa-Espectrometria de Massas
Sequenciamento de Nucleotídeos em Larga Escala
Masculino
Mitocôndrias/metabolismo
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Retina/imunologia
Sciuridae/imunologia
Análise de Sequência de RNA
Espectrometria de Massas em Tandem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amino Acids); 0 (Dietary Carbohydrates); 0 (Dietary Fats); 0 (Eye Proteins); 0 (RNA, Messenger); 8L70Q75FXE (Adenosine Triphosphate)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170526
[St] Status:MEDLINE
[do] DOI:10.1002/jcp.26030


  8 / 4268 MEDLINE  
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[PMID]:29048992
[Au] Autor:Turner JM; Reher S; Warnecke L; Dausmann KH
[Ti] Título:Eurasian Red Squirrels Show Little Seasonal Variation in Metabolism in Food-Enriched Habitat.
[So] Source:Physiol Biochem Zool;90(6):655-662, 2017 Nov/Dec.
[Is] ISSN:1537-5293
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Energy expenditure and ambient temperature (T ) are intrinsically linked through changes in an animal's metabolic rate. While the nature of this relationship is stable, the breadth of change in thermoregulatory cost varies with body size and physiological acclimatization to season. To explore seasonal metabolic changes of small mammals, we studied a population of Eurasian red squirrels (Sciurus vulgaris) in a seminatural environment with a year-round supply of natural and supplemented food. In each season we measured the metabolic rate of wild-caught red squirrels, using open-flow respirometry, and hypothesized that individuals would make adjustments to contend with seasonal weather conditions. In comparison to summer animals, we predicted that winter squirrels would show (1) an increase in metabolic rate within the thermoneutral zone, (2) a decrease in the lower critical temperature of the thermoneutral zone, (3) a shallower slope of resting metabolic rate with decreasing T , and (4) lower thermal conductance. Surprisingly, we observed only minor changes in resting metabolic rate, and energetic modeling suggested that the scope of change was unlikely to be of ecological consequence. Hair area density was higher in winter than in summer, corresponding to a slightly elevated thermal conductance in summer, while body mass was reasonably constant year-round. We conclude that the scope of physiological seasonal adaptation is minimal when food is abundant and that squirrels instead rely on adjustments in activity to reduce exposure to low T . We suggest that this may explain the squirrel's success in a wide range of habitats, including urban areas, which require a rapid and flexible response to environmental changes and may indicate the capacity of other small mammal species to cope with environmental disturbance.
[Mh] Termos MeSH primário: Ecossistema
Metabolismo Energético/fisiologia
Alimentos
Sciuridae/fisiologia
Estações do Ano
[Mh] Termos MeSH secundário: Animais
Feminino
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171020
[St] Status:MEDLINE
[do] DOI:10.1086/694847


  9 / 4268 MEDLINE  
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[PMID]:28976820
[Au] Autor:Roy AN; Straub MH; Stephenson N; Sholty KE; Foley J
[Ad] Endereço:1 Department of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California , Davis, Davis, California.
[Ti] Título:Distribution and Diversity of Borrelia burgdorferi Sensu Lato Group Bacteria in Sciurids of California.
[So] Source:Vector Borne Zoonotic Dis;17(11):735-742, 2017 Nov.
[Is] ISSN:1557-7759
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:California has a remarkable diversity of squirrel and chipmunk species (sciurids), and five named and several unnamed genospecies in the Borrelia burgdorferi sensu lato group (BBSL) of bacteria as well, many of which utilize sciurids as reservoirs. We investigated the prevalence, spatial distribution, and diversity of BBSL in sciurids of California by literature search, PCR of 585 ear tissue samples from 15 sciurid species prospectively collected across 19 California counties, and DNA sequencing when possible. Seven publications documented BBSL infections in western gray squirrels (Sciurus griseus), fox squirrels (Sciurus niger), eastern gray squirrels (Sciurus carolinensis), Douglas squirrels (Tamiasciurus douglasii), and redwood chipmunks (Tamias ochrogenys) in northern California. Prospective sampling added new BBSL infection records for long-eared chipmunks (Tamias quadrimaculatus), Allen's chipmunks (Tamias senex), and Siskiyou chipmunks (Tamias siskiyou). Infection was detected in the Mendocino, North Coast, West Sierra, and Central Valley regions of California. The overall PCR prevalence was 9.4% (n = 585), and exceeded 40% (n = 84) in Mendocino and farther north along the Pacific coast. Redwood (40.7%, n = 81) and Siskiyou (22.2%, n = 18) chipmunks had the highest prevalence of BBSL infection. BBSL infections were associated with arboreal and semiarboreal sciurid species and species occurring in conifer forests. Western gray squirrels and Allen's chipmunks in Humboldt County and redwood chipmunks in Mendocino County were infected with B. burgdorferi sensu stricto, while we identified Borrelia bissettiae in Douglas squirrels and Siskiyou chipmunks in Humboldt and Del Norte Counties. This indicates that further study of sciurids can aid in describing the ecology of BBSL in California.
[Mh] Termos MeSH primário: Grupo Borrelia Burgdorferi/isolamento & purificação
Doença de Lyme/veterinária
Sciuridae/microbiologia
[Mh] Termos MeSH secundário: Animais
California/epidemiologia
DNA Bacteriano/genética
Doença de Lyme/epidemiologia
Doença de Lyme/microbiologia
Reação em Cadeia da Polimerase
Zoonoses
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171005
[St] Status:MEDLINE
[do] DOI:10.1089/vbz.2017.2134


  10 / 4268 MEDLINE  
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[PMID]:28846709
[Au] Autor:Marchant A; Le Coupanec A; Joly C; Perthame E; Sertour N; Garnier M; Godard V; Ferquel E; Choumet V
[Ad] Endereço:Centre National de Référence des Borrelia, Institut Pasteur, Paris, France.
[Ti] Título:Infection of Ixodes ricinus by Borrelia burgdorferi sensu lato in peri-urban forests of France.
[So] Source:PLoS One;12(8):e0183543, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Lyme borreliosis is the most common tick-borne disease in the northern hemisphere. In Europe, it is transmitted by Ixodes ticks that carry bacteria belonging to the Borrelia burgdorferi sensu lato complex. The objective of this work was to explore eco-epidemiological factors of Lyme borreliosis in peri-urban forests of France (Sénart, Notre-Dame and Rambouillet). We investigated whether the introduction of Tamias sibiricus in Sénart could alter the density of infected ticks. Moreover, the density and tick infection were investigated according to the tree species found in various patches of Sénart forest. For this purpose, ticks were sampled during 3 years. In the Sénart forest, the density of nymph and adult ticks showed no significant difference between 2008, 2009 and 2011. The nymph density varied significantly as a function of the month of collection. Regarding the nymphs, a higher rate of infection and infected density were found in 2009. Plots with chipmunks (C) presented a lower density of both nymphs and adult ticks than plots without chipmunks (NC) did. A higher rate of infection of nymphs with Borrelia was seen in C plots. The prevalence of the various species of Borrelia was also found to vary between C and NC plots with the year of the collect. The presence of chestnut trees positively influenced the density of both nymphs and adults. The infected nymph density showed a significant difference depending on the peri-urban forest studied, Sénart being higher than Rambouillet. The prevalence of Borrelia species also differed between the various forests studied. Concerning the putative role that Tamias sibiricus may play in the transmission of Borrelia, our results suggest that its presence is correlated with a higher rate of infection of questing ticks by Borrelia genospecies and if its population increases, it could play a significant role in the risk of transmission of Lyme borreliosis.
[Mh] Termos MeSH primário: Borrelia burgdorferi/isolamento & purificação
Ixodes/microbiologia
Doença de Lyme/microbiologia
[Mh] Termos MeSH secundário: Animais
Florestas
França
Doença de Lyme/transmissão
Sciuridae
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170829
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0183543



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