回旋糸状虫類、オンコセルカ、ンコセルカ属、Onchocerca属
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/03/10 07:55:00」(JST)
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Onchocerca |
|
Adult Black Fly with Onchocerca volvulus emerging from the insect's antenna. |
Scientific classification |
Kingdom: |
Animalia |
Phylum: |
Nematoda |
Class: |
Secernentea |
Order: |
Spirurida |
Family: |
Onchocercidae |
Genus: |
Onchocerca |
Onchocerca is a genus of roundworm. It contains one human parasite - Onchocerca volvulus - which is responsible for the neglected disease Onchocerciasis, also known as "River Blindness" because the infected humans tend to live near rivers where host black flies live. Over 40 million people are infected in Africa, Central America, and South America.[1]
§List of species
Life cycle of
Onchocerca volvulus
- Onchocerca armillata
- Onchocerca cervicalis
- Onchocerca dukei
- Onchocerca fasciata
- Onchocerca flexuosa
- Onchocerca gibsoni
- Onchocerca gutturosa
- Onchocerca jakutensis
- Onchocerca linealis
- Onchocerca lupi
- Onchocerca ochengi
- Onchocerca ramachandrini
- Onchocerca sp. 'bushbuck'
- Onchocerca sp. 'Siisa
- Onchocerca tubingensis
- Onchocerca volvulus
§References
- Species of genus Onchocerca
- ^ "Medical Microbiology", Indiana State University. Accessed 14 February 2008.
§External links
|
Wikispecies has information related to: Onchocerca |
- systematics of five Onchocerca species (Nematoda: Filarioidea) including the human parasite, O. volvulus, suggest sympatric speciation
UpToDate Contents
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English Journal
- New tools and insights to assist with the molecular identification of Simulium guianense s.l., main Onchocerca volvulus vector within the highland areas of the Amazonia onchocerciasis focus.
- Crainey JL1, Mattos-Glória A2, Hamada N2, Luz SL3.Author information 1Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz Amazônia Rua Terezina, 476. Adrianópolis, CEP: 69057-070 Manaus, AM, Brazil.2Lab de Citotaxonomia e Insetos Aquáticos, Instituto Nacional de Pesquisas da Amazônia-INPA, 69011-970 Manaus, AM, Brazil.3Ecologia de Doenças Transmissíveis na Amazônia, Instituto Leônidas e Maria Deane, Fiocruz Amazônia Rua Terezina, 476. Adrianópolis, CEP: 69057-070 Manaus, AM, Brazil. Electronic address: sergioluz@amazonia.fiocruz.br.AbstractFollowing the success of the Onchocerciasis Elimination Programme for the Americas (OEPA), there is now just one Latin American onchocerciasis focus where onchocerciasis transmission is described as 'on-going:' the Amazonia Onchocerciasis focus. In the hyperendemic highland areas of the Amazonia focus, Simulium guianense s.l. Wise are the most important vectors of the disease. Populations of S. guianense s.l. are, however, known to vary in their cytogenetics and in a range of behaviours, including in their biting habits. In the hypoendemic lowland areas of the Amazonia focus, for example, S. guianense s.l. are generally regarded as zoophilic and consequently unimportant to disease transmission. Robust tools, to discriminate among various populations of S. guianense s.l. have, however, not yet been developed. In the work reported here, we have assessed the utility of a ribosomal DNA sequence fragment spanning the nuclear ribosomal ITS-1, ITS-2 and 5.8S sequence regions and a ∼850 nucleotide portion of the mitochondrial cytochrome oxidase gene (CO1) for species-level identification and for resolving the within species substructuring. We report here how we have generated 78 CO1 sequences from a rich set of both zoophilic and anthropophilic populations of S. guianense s.l. that were collected from eight sites that are broadly distributed across Brazil. Consistent with previous findings, our analysis supports the genetic isolation of Simulium litobranchium from S. guianense s.l. In contrast with previous findings, however, our results did not provide support for the divergence of the two species prior to the radiation of S. guianense s.l. In our analysis of the S. guianense s.l. ribosomal DNA sequence trace files we generated, we provide clear evidence of multiple within-specimen single nucleotide polymorphisms and indels suggesting that S. guianense s.l. ribosomal DNA is not a good target for conventional DNA barcoding. This is the first report of S. guianense s.l. within individual ribosomal DNA variation and thus the first evidence that the species is not subject to the normal effects of concerted evolution. Collectively, these data illustrate the need for diverse sampling in the development of robust molecular tools for vector identification and suggest that ribosomal DNA might be able to assist with resolving S. guianense s.l. species substructuring that C01 barcoding has hitherto failed to.
- Acta tropica.Acta Trop.2014 Mar;131:47-55. doi: 10.1016/j.actatropica.2013.10.019. Epub 2013 Nov 4.
- Following the success of the Onchocerciasis Elimination Programme for the Americas (OEPA), there is now just one Latin American onchocerciasis focus where onchocerciasis transmission is described as 'on-going:' the Amazonia Onchocerciasis focus. In the hyperendemic highland areas of the Amazonia foc
- PMID 24200838
- Cutaneous Manifestations of a Zoonotic Onchocerca Species in an Adult Male acquired in Nova Scotia: Report of a Case and Review of the Literature.
- Lai JH1, Walsh NM, Pritt BS, Sloan L, Gibson LE, Desormeau L, Haldane DJ.Author information 1Division of Anatomical Pathology, Department of Pathology and Laboratory Medicine, Capital District Health Authority and Dalhousie University, Halifax, NS, Canada.AbstractA 65 year old male with known hypertension and hypercholesterolemia sought medical attention because of a three month history of skin swelling on his upper back. Histopathology and molecular techniques were employed and identified an organism in the Onchocerca genus. This represents a very uncommon example of cutaneous infection by a zoonotic Onchocerca species.
- Journal of clinical microbiology.J Clin Microbiol.2014 Feb 5. [Epub ahead of print]
- A 65 year old male with known hypertension and hypercholesterolemia sought medical attention because of a three month history of skin swelling on his upper back. Histopathology and molecular techniques were employed and identified an organism in the Onchocerca genus. This represents a very uncommon
- PMID 24501037
- Serosurveillance to monitor onchocerciasis elimination: the ugandan experience.
- Oguttu D1, Byamukama E, Katholi CR, Habomugisha P, Nahabwe C, Ngabirano M, Hassan HK, Lakwo T, Katabarwa M, Richards FO, Unnasch TR.Author information 1Vector Control Division, Ministry of Health, Kampala, Uganda; The Carter Center, Kampala, Uganda; Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama; Department of Global Health, University of South Florida, Tampa, Florida; The Carter Center, Atlanta, Georgia.AbstractAbstract. Uganda is the only African country whose onchocerciasis elimination program uses a two-pronged approach of vector control and mass drug distribution. The Ugandan program relies heavily upon the use of serosurveys of children to monitor progress toward elimination. The program has tested over 39,000 individuals from 11 foci for Onchocerca volvulus exposure, using the Ov16 ELISA test. The data show that the Ov16 ELISA is a useful operational tool to monitor onchocerciasis transmission interruption in Africa at the World Health Organization (WHO) recommended threshold of < 0.1% in children. The Ugandan experience has also resulted in a re-examination of the statistical methods used to estimate the boundary of the upper 95% confidence interval for the WHO prevalence threshold when all samples tested are negative. This has resulted in the development of Bayesian and hypergeometric statistical methods that reduce the number of individuals who must be tested to meet the WHO criterion.
- The American journal of tropical medicine and hygiene.Am J Trop Med Hyg.2014 Feb;90(2):339-45. doi: 10.4269/ajtmh.13-0546. Epub 2013 Dec 16.
- Abstract. Uganda is the only African country whose onchocerciasis elimination program uses a two-pronged approach of vector control and mass drug distribution. The Ugandan program relies heavily upon the use of serosurveys of children to monitor progress toward elimination. The program has tested ov
- PMID 24343885
Japanese Journal
- 本邦における人獣共通オンコセルカ症 : その起因種と媒介ブユ種
- 高岡 宏行
- 衛生動物 = Medical entomology and zoology 66(2), 23-30, 2015-06-25
- NAID 40020553689
- 回旋糸状虫Onchocerca volvulus特異抗イディオ抗体の作製と抗糸状虫薬ジエチルカルバマジン(DEC)の糸状虫ミクロフィラリア殺滅機序 (特集 私の仕事)
- 早崎 峯夫
- Bulletin de la societe franco-japonaise de biologie 52, 145-157, 2012
- NAID 40020180682
- Zoonotic filariasis caused by Onchocerca dewittei japonica in a resident of Hiroshima Prefecture, Honshu, Japan
- UNI Shigehiko,BODA Tomoyuki,DAISAKU Koichi,IKURA Yoshihiro,MARUYAMA Haruhiko,HASEGAWA Hideo,FUKUDA Masako,TAKAOKA Hiroyuki,BAIN Odile
- Parasitology international : official journal of the Japanese Society of Parasitology 59(3), 477-480, 2010-09-01
- NAID 10029825766
Related Links
- Onchocerca is a genus of roundworm. It contains one human parasite - Onchocerca volvulus - which is responsible for the neglected disease Onchocerciasis, also known as "River Blindness" because the infected humans tend to live near ...
- Onchocerca volvulus is a nematode that causes onchocerciasis or "river blindness" mostly in Africa. Long-term corneal inflammation, or keratitis, leads to thickening of the corneal stroma which ultimately leads to blindness. Humans are the ...
Related Pictures
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![Onchocerca volvulus : skin snip](https://1mg.info/0/f/c/2710.jpg)
![Microfilariae of Onchocerca volvulus](https://1mg.info/0/f/c/2711.jpg)
![Onchocerca volvulus (Nematoda: filarial](https://1mg.info/0/f/c/2712.jpg)
![Onchocerca volvulus - Miscellaneous](https://1mg.info/0/f/c/2713.jpg)
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