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Parasites & Vectors

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https://www.readbyqxmd.com/read/28103957/rna-interference-mediated-knockdown-of-brugia-malayi-udp-galactopyranose-mutase-severely-affects-parasite-viability-embryogenesis-and-in-vivo-development-of-infective-larvae
#1
Sweta Misra, Jyoti Gupta, Shailja Misra-Bhattacharya
BACKGROUND: Galactofuranose is an essential cell surface component present in bacteria, fungi and several nematodes such as Caenorhabditis spp., Brugia spp., Onchocerca spp. and Strongyloides spp. This sugar maintains the integrity of parasite surface and is essential for virulence. UDP-Galactopyranose mutase (bmugm) plays a key role in Galf biosynthesis by catalyzing conversion of UDP-Galactopyranose into UDP-galactofuranose and knockout studies of the gene in Leishmania major, Mycobacterium and Aspergillus fumigatus displayed attenuated virulence while RNA interference study in C...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28103955/mosquitoes-diptera-culicidae-in-mauritania-a-review-of-their-biodiversity-distribution-and-medical-importance
#2
REVIEW
Aichetou Mint Mohamed Lemine, Mohamed Aly Ould Lemrabott, Moina Hasni Ebou, Khadijetou Mint Lekweiry, Mohamed Salem Ould Ahmedou Salem, Khyarhoum Ould Brahim, Mohamed Ouldabdallahi Moukah, Issa Nabiyoullahi Ould Bouraya, Cecile Brengues, Jean-François Trape, Leonardo Basco, Hervé Bogreau, Frédéric Simard, Ousmane Faye, Ali Ould Mohamed Salem Boukhary
Although mosquitoes (Diptera: Culicidae) are important disease vectors, information on their biodiversity in Mauritania is scarce and very dispersed in the literature. Data from the scientific literature gathered in the country from 1948 to 2016 were collected and analyzed. Overall 51 culicid species comprising 17 Anopheles spp., 14 Aedes spp., 18 Culex spp. and two Mansonia spp. have been described in Mauritania among which Anopheles arabiensis, Aedes vexans, Culex poicilipes and Culex antennatus are of epidemiological significance...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28103945/a-randomized-blinded-controlled-usa-field-study-to-assess-the-use-of-fluralaner-topical-solution-in-controlling-canine-flea-infestations
#3
Cheyney Meadows, Frank Guerino, Fangshi Sun
BACKGROUND: Orally administered fluralaner effectively controls fleas and ticks on dogs for 12 weeks. This study evaluates the flea control efficacy achieved with topically applied fluralaner in dogs. METHODS: This investigator-blinded, multi-center randomized, positive controlled study evaluated flea control efficacy in dogs following a single owner-applied treatment of topical fluralaner. A positive control group received three treatments, at 4-week intervals, of a commercial formulation of fipronil/(S)-methoprene...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28103942/a-randomized-blinded-controlled-usa-field-study-to-assess-the-use-of-fluralaner-topical-solution-in-controlling-feline-flea-infestations
#4
Cheyney Meadows, Frank Guerino, Fangshi Sun
BACKGROUND: Fleas are a common ectoparasite of domestic cats and there is a need for novel treatments that improve feline flea control. METHODS: This investigator-blinded, multi-center randomized, positive-controlled study evaluated the flea control in cats provided by a single owner-applied treatment with a fluralaner topical formulation compared with a positive control. Households with up to five healthy cats, all at least 12 weeks of age and weighing at least 1...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28103905/spatio-temporal-analysis-of-the-genetic-diversity-and-complexity-of-plasmodium-falciparum-infections-in-kedougou-southeastern-senegal
#5
Makhtar Niang, Laty G Thiam, Cheikh Loucoubar, Abdourahmane Sow, Bacary D Sadio, Mawlouth Diallo, Amadou A Sall, Aissatou Toure-Balde
BACKGROUND: Genetic analyses of the malaria parasite population and its temporal and spatial dynamics could provide an assessment of the effectiveness of disease control strategies. The genetic diversity of Plasmodium falciparum has been poorly documented in Senegal, and limited data are available from the Kedougou Region. This study examines the spatial and temporal variation of the genetic diversity and complexity of P. falciparum infections in acute febrile patients in Kedougou, southeastern Senegal...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28095895/genome-wide-snp-analysis-using-2b-rad-sequencing-identifies-the-candidate-genes-putatively-associated-with-resistance-to-ivermectin-in-haemonchus-contortus
#6
Xiaoping Luo, Xiaona Shi, Chunxiu Yuan, Min Ai, Cheng Ge, Min Hu, Xingang Feng, Xiaoye Yang
BACKGROUND: The excessive and uncontrolled use of anthelmintics, e.g. ivermectin (IVM) for the treatment of livestock parasites has led to widespread resistance in gastrointestinal nematodes, such as Haemonchus contortus. There is an urgent need for better management of drug-use in nematode control and development of novel anthelmintics. Discovery and identification of anthelmintic resistance-associate molecules/markers can provide a basis for rational anthelmintics-use and development of novel drugs...
January 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28095875/assessment-of-synthetic-floral-based-attractants-and-sugar-baits-to-capture-male-and-female-aedes-aegypti-diptera-culicidae
#7
Kara Fikrig, Brian J Johnson, Durland Fish, Scott A Ritchie
BACKGROUND: The viruses transmitted by Aedes aegypti, including dengue and Zika viruses, are rapidly expanding in geographic range and as a threat to public health. In response, control programs are increasingly turning to the use of sterile insect techniques resulting in a need to trap male Ae. aegypti to monitor the efficacy of the intervention. However, there is a lack of effective and cheap methods for trapping males. Thus, we attempted to exploit the physiological need to obtain energy from sugar feeding in order to passively capture male and female Ae...
January 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28093080/efficacy-of-fluralaner-against-otodectes-cynotis-infestations-in-dogs-and-cats
#8
Janina Taenzler, Christa de Vos, Rainer K A Roepke, Régis Frénais, Anja R Heckeroth
BACKGROUND: The efficacy of fluralaner for the treatment of Otodectes cynotis infestations in dogs and cats was evaluated after oral (dogs) or topical administration (dogs and cats). Twenty-four dogs and sixteen cats were experimentally infested with O. cynotis and randomly allocated to equal sized groups (n = 8/group). Dog groups were treated once, either orally with fluralaner at a minimum dose of 25 mg/kg body weight, topically with fluralaner at a dose of 25 mg/kg body weight or topically with saline solution (control)...
January 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28088247/first-molecular-identification-of-echinococcus-vogeli-and-echinococcus-granulosus-sensu-stricto-g1-revealed-in-feces-of-domestic-dogs-canis-familiaris-from-acre-brazil
#9
Leandro Batista das Neves, Paulo Eduardo Ferlini Teixeira, Sidnei Silva, Fernanda Bittencourt de Oliveira, Daniel Daipert Garcia, Fernanda Barbosa de Almeida, Rosângela Rodrigues-Silva, José Roberto Machado-Silva
BACKGROUND: Echinococcus granulosus (sensu lato) (s.l.) and Echinococcus vogeli are causative agents of chronic zoonotic diseases such as cystic and polycystic echinococcosis, respectively. In Brazil, polycystic echinococcosis has a restricted geographical distribution in the North Region, while cystic echinococcosis is observed in the South Region. Domestic dogs (Canis familiaris) fed with raw viscera represent a risk factor for E. granulosus (s.l.) infection in the South Region. Although this practice is frequent, it remains unclear whether domestic dogs are infected with E...
January 14, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28088225/using-low-cost-drones-to-map-malaria-vector-habitats
#10
Andy Hardy, Makame Makame, Dónall Cross, Silas Majambere, Mwinyi Msellem
BACKGROUND: There is a growing awareness that if we are to achieve the ambitious goal of malaria elimination, we must compliment indoor-based vector control interventions (such as bednets and indoor spraying) with outdoor-based interventions such as larval source management (LSM). The effectiveness of LSM is limited by our capacity to identify and map mosquito aquatic habitats. This study provides a proof of concept for the use of a low-cost (< $1000) drone (DJI Phantom) for mapping water bodies in seven sites across Zanzibar including natural water bodies, irrigated and non-irrigated rice paddies, peri-urban and urban locations...
January 14, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28086987/a-systematic-review-and-meta-analysis-of-the-seroprevalence-of-toxoplasma-gondii-in-cats-in-mainland-china
#11
Huan Ding, Yu-Meng Gao, Yao Deng, Poppy H L Lamberton, Da-Bing Lu
BACKGROUND: Toxoplasmosis is caused by Toxoplasma gondii which can infect all warm-blooded animals. As the most common feline definitive host, cats play a vital role in the transmission of T. gondii. However, national estimates of the seroprevalence of T. gondii in cats in mainland China are lacking, and therefore a systematic review and meta-analysis were performed to provide insight into national environmental transmission levels and potential transmission to humans. METHODS: Studies published up until July 1, 2016, on T...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28086941/diversity-in-breeding-sites-and-distribution-of-anopheles-mosquitoes-in-selected-urban-areas-of-southern-ghana
#12
Precious A Dzorgbe Mattah, Godfred Futagbi, Leonard K Amekudzi, Memuna M Mattah, Dziedzorm K de Souza, Worlasi D Kartey-Attipoe, Langbong Bimi, Michael D Wilson
BACKGROUND: Anopheles vectors of malaria are supposedly less common in urban areas as a result of pollution, but there is increasing evidence of their adaptation to organically polluted water bodies. This study characterized the breeding habitats of Anopheles mosquitoes in the two major urban areas in southern Ghana; Accra (AMA) and Sekondi-Takoradi (STMA) Metropolitan Areas, during dry and wet seasons. METHODS: Anopheles mosquito larvae were sampled using standard dipping methods to determine larval densities...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28086865/rnai-reveals-proteins-for-metabolism-and-protein-processing-associated-with-langat-virus-infection-in-ixodes-scapularis-black-legged-tick-ise6-cells
#13
Jeffrey M Grabowski, Monika Gulia-Nuss, Richard J Kuhn, Catherine A Hill
BACKGROUND: Tick-borne flaviviruses (TBFs) cause thousands of human cases of encephalitis worldwide each year, with some TBF infections progressing to hemorrhagic fever. TBFs are of medical and veterinary importance and strategies to reduce flavivirus transmission by the tick vector may have significant application. Analyses of the proteome of ISE6 cells derived from the black legged tick, Ixodes scapularis infected with the TBF, Langat virus (LGTV), have provided insights into proteins and cellular processes involved with LGTV infection...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28086864/direct-detection-of-falciparum-and-non-falciparum-malaria-dna-from-a-drop-of-blood-with-high-sensitivity-by-the-dried-lamp-system
#14
Kyoko Hayashida, Kiichi Kajino, Humphrey Simukoko, Martin Simuunza, Joseph Ndebe, Amos Chota, Boniface Namangala, Chihiro Sugimoto
BACKGROUND: Because of the low sensitivity of conventional rapid diagnostic tests (RDTs) for malaria infections, the actual prevalence of the diseases, especially those caused by non-Plasmodium falciparum (non-Pf) species, in asymptomatic populations remain less defined in countries lacking in well-equipped facilities for accurate diagnoses. Our direct blood dry LAMP system (CZC-LAMP) was applied to the diagnosis of malaria as simple, rapid and highly sensitive method as an alternative for conventional RDTs in malaria endemic areas where laboratory resources are limited...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28086840/evidence-of-multiple-insecticide-resistance-mechanisms-in-anopheles-gambiae-populations-in-bangui-central-african-republic
#15
Marina Lidwine Olé Sangba, Aboubakar Sidick, Renaud Govoetchan, Christian Dide-Agossou, Razaki A Ossè, Martin Akogbeto, Mamadou Ousmane Ndiath
BACKGROUND: Knowledge of insecticide resistance status in the main malaria vectors is an essential component of effective malaria vector control. This study presents the first evaluation of the status of insecticide resistance in Anopheles gambiae populations from Bangui, the Central African Republic. METHODS: Anopheles mosquitoes were reared from larvae collected in seven districts of Bangui between September to November 2014. The World Health Organisation's bioassay susceptibility tests to lambda-cyhalothrin (0...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28077167/role-of-anopheles-cellia-rufipes-gough-1910-and-other-local-anophelines-in-human-malaria-transmission-in-the-northern-savannah-of-cameroon-a-cross-sectional-survey
#16
Raymond N Tabue, Parfait Awono-Ambene, Josiane Etang, Jean Atangana, Antonio-Nkondjio C, Jean C Toto, Salomon Patchoke, Rose G F Leke, Etienne Fondjo, Abraham P Mnzava, Tessa B Knox, Alexis Tougordi, Martin J Donnelly, Jude D Bigoga
BACKGROUND: As part of a study to determine the impact of insecticide resistance on the effectiveness of long-lasting insecticide treated nets (LLINs) in the north of Cameroon, the unexpectedly high density and anthropophilic behaviour of Anopheles rufipes lead us to investigate this species bionomics and role in human malaria parasite transmission. METHODS: For four consecutive years (2011-2014), annual cross-sectional sampling of adult mosquitoes was conducted during the peak malaria season (September-October) in three health districts in northern Cameroon...
January 11, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28077161/mathematical-modelling-of-echinococcus-multilocularis-abundance-in-foxes-in-zurich-switzerland
#17
Belen Otero-Abad, Simon R Rüegg, Daniel Hegglin, Peter Deplazes, Paul R Torgerson
BACKGROUND: In Europe, the red fox (Vulpes vulpes) is the main definitive host of Echinococcus multilocularis, the aetiological agent of a severe disease in humans called alveolar echinococcosis. The distribution of this zoonotic parasite among the fox population is remarkably aggregated with few heavily infected animals harbouring much of the parasite burdens and being responsible for most of the environmental parasitic egg contamination. Important research questions explored were: (i) spatial differences in parasite infection pressure related to the level of urbanization; (ii) temporal differences in parasite infection pressure in relation to time of the year; (iii) is herd immunity or an age-dependent infection pressure responsible for the observed parasite abundance; (iv) assuming E...
January 11, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28069074/a-next-generation-microarray-further-reveals-stage-enriched-gene-expression-pattern-in-the-blood-fluke-schistosoma-japonicum
#18
Pengfei Cai, Shuai Liu, Xianyu Piao, Nan Hou, Hong You, Donald P McManus, Qijun Chen
BACKGROUND: Schistosomiasis is caused by infection with blood flukes of the genus Schistosoma, and ranks, in terms of disability-adjusted life years (DALYs), as the third most important neglected tropical disease. Schistosomes have several discrete life stages involving dramatic morphological changes during their development, which require subtle gene expression modulations to complete the complex life-cycle. RESULTS: In the current study, we employed a second generation schistosome DNA chip printed with the most comprehensive probe array for studying the Schistosoma japonicum transcriptome, to explore stage-associated gene expression in different developmental phases of S...
January 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28069065/exploring-the-potential-of-using-cattle-for-malaria-vector-surveillance-and-control-a-pilot-study-in-western-kenya
#19
Margaret M Njoroge, Inaki Tirados, Steven W Lindsay, Glyn A Vale, Stephen J Torr, Ulrike Fillinger
BACKGROUND: Malaria vector mosquitoes with exophilic and zoophilic tendencies, or with a high acceptance of alternative blood meal sources when preferred human blood-hosts are unavailable, may help maintain low but constant malaria transmission in areas where indoor vector control has been scaled up. This residual transmission might be addressed by targeting vectors outside the house. Here we investigated the potential of insecticide-treated cattle, as routinely used for control of tsetse and ticks in East Africa, for mosquito control...
January 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28069059/molecular-detection-of-rickettsia-species-in-ticks-collected-from-the-southwestern-provinces-of-the-republic-of-korea
#20
Yoontae Noh, Yeong Seon Lee, Heung-Chul Kim, Sung-Tae Chong, Terry A Klein, Ju Jiang, Allen L Richards, Hae Kyeong Lee, Su Yeon Kim
BACKGROUND: Rickettsiae constitute a group of arthropod-borne, Gram-negative, obligate intracellular bacteria that are the causative agents of diseases ranging from mild to life threatening that impact on medical and veterinary health worldwide. METHODS: A total of 6,484 ticks were collected by tick drag from June-October 2013 in the southwestern provinces of the Republic of Korea (ROK) (Jeollanam, n = 3,995; Jeollabuk, n = 680; Chungcheongnam, n = 1,478; and Chungcheongbuk, n = 331)...
January 10, 2017: Parasites & Vectors
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