Abstract:
BACKGROUND:The cattle tick Rhipicephalus (Boophilus) microplus is an economically important parasite of livestock. Effective control of ticks using acaricides is threatened by the emergence of resistance to many existing compounds. Several continuous R. microplus cell lines have been established and provide an under-utilised resource for studies into acaricide targets and potential genetic mutations associated with resistance. As a first step to genetic studies using these resources, this study aimed to determine the presence or absence of two genes and their transcripts that have been linked with acaricide function in cattle ticks: β-adrenergic octopamine receptor (βAOR, associated with amitraz resistance) and ATP-binding cassette B10 (ABCB10, associated with macrocyclic lactone resistance) in six R. microplus cell lines, five other Rhipicephalus spp. cell lines and three cell lines representing other tick genera (Amblyomma variegatum, Ixodes ricinus and Hyalomma anatolicum). METHODS:End-point polymerase chain reaction (PCR) was used for detection of the βAOR gene and transcripts in DNA and RNA extracted from the tick cell lines, followed by capillary sequencing of amplicons. Quantitative real-time PCR (qPCR) was performed to determine the levels of expression of ABCB10. RESULTS:βAOR gene expression was detected in all Rhipicephalus spp. cell lines. We observed a second amplicon of approximately 220 bp for the βAOR gene in the R. microplus cell line BME/CTVM6, derived from acaricide-resistant ticks. Sequencing of this transcript variant identified a 36 bp insertion in the βAOR gene, leading to a 12-amino acid insertion (LLKTLALVTIIS) in the first transmembrane domain of the protein. In addition, nine synonymous SNPs were also discovered in R. appendiculatus, R. evertsi and R. sanguineus cell lines. Some of these SNPs appear to be unique to each species, providing potential tools for differentiating the tick species. The BME/CTVM6 cell line had significantly higher ABCB10 (P = 0.002) expression than the other R. microplus cell lines. CONCLUSIONS:The present study has identified a new βAOR gene and demonstrated a higher ABCB10 expression level in the BME/CTVM6 cell line, indicating that tick cell lines provide a useful experimental tool for acaricide resistance studies and further elucidation of tick genetics.
journal_name
Parasit Vectorsjournal_title
Parasites & vectorsauthors
Koh-Tan HH,Strachan E,Cooper K,Bell-Sakyi L,Jonsson NNdoi
10.1186/s13071-016-1708-xsubject
Has Abstractpub_date
2016-08-02 00:00:00pages
425issue
1issn
1756-3305pii
10.1186/s13071-016-1708-xjournal_volume
9pub_type
杂志文章abstract:BACKGROUND:NOD-like receptor protein 3 (NLRP3) inflammasome was reported as expressed in schistosomiasis-induced liver fibrosis (SSLF). We used an NLRP3 inflammasome inhibitor, MCC950, to investigate whether it inhibited liver fibrosis, and explored the preliminary molecular mechanism. METHODS:BALB/c mice were infecte...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-3223-8
更新日期:2019-01-11 00:00:00
abstract:BACKGROUND:This study evaluated the exposure of dogs to three different Ehrlichia spp. in the south and central regions of the United States where vector-borne disease prevalence has been previously difficult to ascertain, particularly beyond the metropolitan areas. METHODS:Dog blood samples (n = 8,662) were submitted...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-5-29
更新日期:2012-02-08 00:00:00
abstract:BACKGROUND:Lymphatic filariasis (LF) due to Wuchereria bancrofti is being eliminated from Oceania under the Pacific Elimination of Lymphatic Filariasis Programme. LF was endemic in Solomon Islands but in the 2010-2020 Strategic Plan of the Global Programme to Eliminate LF, Solomon Islands was listed as non-endemic for ...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-6-218
更新日期:2013-07-26 00:00:00
abstract:BACKGROUND:Culicoides biting midges are incriminated as biological vectors of a number of viruses, e.g. bluetongue virus. In order to define vector-free periods/areas and to assess the vectorial role of the various Culicoides species, a comprehensive knowledge on their spatio-temporal occurrence is required. METHODS:B...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-5-246
更新日期:2012-10-31 00:00:00
abstract:BACKGROUND:Transfer RNA (tRNA)-derived fragments (tRFs) have been widely identified in nature, functioning in diverse biological and pathological situations. Yet, the presence of these small RNAs in Plasmodium spp. remains unknown. Systematic identification and characterization of tRFs is therefore highly needed to und...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-019-3301-6
更新日期:2019-01-15 00:00:00
abstract:BACKGROUND:The African malaria vector, Anopheles gambiae s.s., is known to feed selectively on certain plants for sugar sources. However, the adaptive significance of this behaviour especially on how the extracts of such plants impact on the fitness of this vector has not been explored. This study determined the toxici...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-7-312
更新日期:2014-07-04 00:00:00
abstract:BACKGROUND:In Switzerland, the invasive Asian tiger mosquito, Aedes albopictus, is firmly established in the Canton of Ticino, south of the Alps. According to a large-scale distribution model developed in 2013, suitable climatic conditions for the establishment of Ae. albopictus north of the Alps are found in Basel and...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-2803-y
更新日期:2018-03-27 00:00:00
abstract:BACKGROUND:Dicistroviridae is a new family of small, non-enveloped, +ssRNA viruses pathogenic to both beneficial arthropods and insect pests. Little is known about the dicistrovirus replication mechanism or gene function, and any knowledge on these subjects comes mainly from comparisons with mammalian viruses from the ...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-6-66
更新日期:2013-03-15 00:00:00
abstract:BACKGROUND:Culex pipiens pipiens plays an important role in the transmission of several vector-borne pathogens such as West Nile virus (WNV) in North America. Laboratory and field studies suggest that this species is ornithophilic but because of genetic hybridization with sibling species during the active mosquito seas...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-1012-1
更新日期:2015-07-24 00:00:00
abstract:BACKGROUND:Control of the mosquito vector Culex pipiens with insecticides is the main way to control arboviruses that the species can transmit such as West Nile virus (WNV) and Rift Valley fever virus (RVFV). However, its efficiency has been hampered by the emergence of insecticide resistance. Little is known about the...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-2625-y
更新日期:2018-01-22 00:00:00
abstract:BACKGROUND:Mathematical models of parasite transmission can help integrate a large body of information into a consistent framework, which can then be used for gaining mechanistic insights and making predictions. However, uncertainty, spatial variability and complexity, can hamper the use of such models for decision mak...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-1132-7
更新日期:2015-10-22 00:00:00
abstract:BACKGROUND:The preventive effect of fluralaner spot-on solution against transmission of Babesia canis by Dermacentor reticulatus ticks was evaluated. FINDINGS:Sixteen dogs, tested negative for B. canis by polymerase chain reaction (PCR) and immunofluorescence assay test (IFAT), were allocated to two study groups. On d...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1481-x
更新日期:2016-05-31 00:00:00
abstract:BACKGROUND:Cyclospora is a protistan parasite that causes enteritis in several species of animals including humans. The aim of this study was to investigate the presence of Cyclospora in captive non-human primates. METHODS:A total of 119 faecal samples from Pan troglodytes, Macaca sylvanus, Cercopithecus cephus, Eryth...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-0872-8
更新日期:2015-05-15 00:00:00
abstract:BACKGROUND:In many parts of Africa as in Benin, the main strategies of vector control are based on the scaling-up of Long Lasting Insecticide Treated Nets (LLITNs) and indoor residual spraying (IRS). The need to understand the biological implications of IRS in large scale and full coverage of LLITNs is paramount. It is...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-5-262
更新日期:2012-11-14 00:00:00
abstract:BACKGROUND:Improved surveillance techniques are required to accelerate efforts against major arthropod-borne diseases such as malaria, dengue, filariasis, Zika and yellow-fever. Light-emitting diodes (LEDs) are increasingly used in mosquito traps because they improve energy efficiency and battery longevity relative to ...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-019-3673-7
更新日期:2019-08-27 00:00:00
abstract:: Canine leishmaniosis is widespread in South America, where a number of Leishmania species have been isolated or molecularly characterised from dogs. Most cases of canine leishmaniosis are caused by Leishmania infantum (syn. Leishmania chagasi) and Leishmania braziliensis. The only well-established vector of Leishmani...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-2-S1-S1
更新日期:2009-03-26 00:00:00
abstract:BACKGROUND:The myxosporean parasite Parvicapsula pseudobranchicola commonly infects farmed Atlantic salmon in northern Norway. Heavy infections are associated with pseudobranch lesions, runting and mortality in the salmon populations. The life-cycle of the parasite is unknown, preventing controlled challenge experiment...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-017-2583-9
更新日期:2018-01-06 00:00:00
abstract:BACKGROUND:Many tick species have great morphological similarity and are thus grouped into species complexes. Molecular methods are therefore useful in the classification and identification of ticks. However, little is known about the genetic diversity of hard ticks in China, especially at the subspecies level. Tengcho...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-018-3048-5
更新日期:2018-08-14 00:00:00
abstract:BACKGROUND:Intestinal parasite infections (IPIs) are among the most significant causes of illness and disease of socially and economically disadvantaged populations in developing countries, including rural areas of the People's Republic of China. With the spread of the human immunodeficiency virus (HIV) among rural Chi...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-5-36
更新日期:2012-02-13 00:00:00
abstract:BACKGROUND:West Nile virus (WNV) is a Flavivirus transmitted to vertebrate hosts by mosquitoes, maintained in nature through an enzootic bird-mosquito cycle. In Europe the virus became of major public health and veterinary concern in the 1990s. In Italy, WNV re-emerged in 2008, ten years after the previous outbreak and...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-1031-y
更新日期:2015-08-13 00:00:00
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journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1913-7
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:Malaria mosquitoes spend a considerable part of their life in the aquatic stage, rendering them vulnerable to interventions directed to aquatic habitats. Recent successes of mosquito larval control have been reported using environmental and biological tools. Here, we report the effects of shading by plants a...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-4-130
更新日期:2011-07-06 00:00:00
abstract:BACKGROUND:The use of inland valley swamps for vegetable crop agriculture contributes to food security in urban and less urbanized settings in Africa. The impact of this agriculture on aggressive mosquitoes' diversity and malaria transmission in central Africa is poorly documented. This study is aimed at assessing the ...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-015-0906-2
更新日期:2015-05-28 00:00:00
abstract:BACKGROUND:Hemotropic mycoplasmas are epicellular erythrocytic bacteria that can cause infectious anemia in some mammalian species. Worldwide, hemotropic mycoplasmas are emerging or re-emerging zoonotic pathogens potentially causing serious and significant health problems in wildlife. The objective of this study was to...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-7-117
更新日期:2014-03-24 00:00:00
abstract:BACKGROUND:In Europe, hard ticks of the subgenus Pholeoixodes (Ixodidae: Ixodes) are usually associated with burrow-dwelling mammals and terrestrial birds. Reports of Pholeoixodes spp. from carnivores are frequently contradictory, and their identification is not based on key diagnostic characters. Therefore, the aims o...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-017-2424-x
更新日期:2017-11-03 00:00:00
abstract:BACKGROUND:The present study was conducted to investigate the serological survey of Toxoplasma antibodies in local.horses from three major regions: a neighbourhood of a city in the North (Sidi Thabet), a neighbourhood of a city on the coast (Monastir) and a neighbourhood of a city in the middle (Battan) of Tunisia (Nor...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/1756-3305-4-218
更新日期:2011-11-22 00:00:00
abstract:BACKGROUND:The pork tapeworm, Taenia solium, is a serious public health problem in rural low-resource areas of Latin America, Africa and Asia, where the associated conditions of nuerocysticercosis (NCC) and porcine cysticercosis cause substantial health and economic harms. An accurate and validated transmission model f...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-020-04226-8
更新日期:2020-07-24 00:00:00
abstract:BACKGROUND:In West Africa, populations of the malaria vector mosquito, Anopheles coluzzii, are seasonally exposed to strong desiccating conditions during the dry season. Their dynamics strictly follows the pace of the availability of suitable larval development sites (water collections). Accordingly, mosquitoes can rep...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1854-1
更新日期:2016-11-02 00:00:00
abstract:BACKGROUND:Chagas disease is a major public health concern in Latin America and it is transmitted by insects of the subfamily Triatominae, including Rhodnius spp. Since palm trees are ubiquitous in Colombia and a habitat for Rhodnius spp., the presence of palms near villages could increase contact rates between vectors...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-016-1884-8
更新日期:2016-11-18 00:00:00
abstract:BACKGROUND:Investigating malaria transmission dynamics is essential to inform policy decision making. Whether multiplicity of infection (MOI) dynamic from individual infections could be a reliable malaria metric in high transmission settings with marked variation in seasons of malaria transmission has been poorly asses...
journal_title:Parasites & vectors
pub_type: 杂志文章
doi:10.1186/s13071-020-04302-z
更新日期:2020-08-20 00:00:00