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Characterization of an Onchocerca-Specific DNA Clone from Onchocerca Volvulus
The American Society of Tropical Medicine and Hygiene, 1987A genomic library of a savanna isolate of Onchocerca volvulus was screened to detect recombinant plasm ids containing highly repeated DNA sequences of this parasite. Four recombinant plasmids were identified which hybridized specifically to Onchocerca DNA, but not to DNA from humans, black flies, Brugia malayi, B. pahangi, or Wuchereria bancrofti.
Dyann F. Wirth +3 more
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In Vitro Cultivation and Development of Onchocerca volvulus and Onchocerca lienalis Microfilariae
The American Journal of Tropical Medicine and Hygiene, 1996Onchocerca volvulus and O. lienalis skin-derived microfilariae (mf) were cultured in vitro; parasite viability was assessed at intervals by measuring their ability to develop in Simulium ornatum. In the presence of monkey kidney feeder cells, both species retained full viability when cultured for up to 5 hr before intrathoracic injection into Simulium.
Senyo Tagboto, Simon Townson
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Identification of antigens of Onchocerca volvulus and Onchocerca gibsoni for diagnostic use
Molecular and Biochemical Parasitology, 1986Adults of Onchocerca volvulus and Onchocerca gibsoni were identically fractionated into a surface-enriched fraction, a phosphate buffered saline (PBS) extract and a PBS insoluble-detergent soluble fraction. Glycoproteins were prepared from these extracts and all fractions were examined by the Western blot technique using sera from individuals infected ...
R. M. E. Parkhouse, Zully Cabrera
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Infection of blackflies with Onchocerca [PDF]
, 1997 The genus Onchocerca comprises approximately 30 species, all of which are obligate parasites of vertebrates and arthropods (Muller, 1979). Onchocerca volvulus is the only species to infect humans, the remaining members of the genus being almost exclusively parasites of wild and domesticated ungulates. Onchocerca parasites have skin-dwelling first-stage
Peter J. Ham, Albert E. Bianco
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The actin genes of Onchocerca volvulus
Molecular and Biochemical Parasitology, 1992The genome of Onchocerca volvulus was found to contain 2 actin gene classes (called 1 and 2) of 2 genes each. The 4 genes are located in 2 clusters (called A and B), each containing a gene class member. Five short introns of 122-207 bp occur within each gene.
John E. Donelson, Wenlin Zeng
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2009
Parasite-vector interactions shape the population dynamics of vector-borne infections and contribute to observed epidemiological patterns. Also, parasites and their vectors may co-evolve, giving rise to locally adapted combinations or complexes with the potential to stabilise the infection.
Thomas S. Churcher +3 more
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Parasite-vector interactions shape the population dynamics of vector-borne infections and contribute to observed epidemiological patterns. Also, parasites and their vectors may co-evolve, giving rise to locally adapted combinations or complexes with the potential to stabilise the infection.
Thomas S. Churcher +3 more
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Zoonotic Onchocerca in a Japanese Child
The American Journal of Tropical Medicine and Hygiene, 1989A female Onchocerca was found in histopathological sections of a nodule removed from the foot of a 2-year-old girl in southern Japan. As in previously reported cases in Switzerland, Crimea, Canada, and the USA, evident morphological features of the worm resembled those of Onchocerca gutturosa and O.
H. Hashimoto +4 more
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Onchocerca in an Alaskan Moose
Journal of Mammalogy, 1958Species of the genus Onchocerca Diesing, 1841, have been reported from numerous ruminants, including cattle, deer, antelope, horses, elk, buffalo, and camels (Yorke and Maplestone, The Nematode Parasites of Vertebrates, 536 pp., 1926). Recently, Rayanyachari and Alwar (India Vet. Jour., 29: 329,1953) recovered Onchocerca sp.
Bert B. Babero, Ralph B. Williams
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Surface components of Onchocerca volvulus
Molecular and Biochemical Parasitology, 1986A technique employing Sephadex G25 gel filtration has been developed for the rapid isolation and purification of live microfilariae of Onchocerca volvulus from subcutaneous nodules and skin samples. Microfilariae, adult worms and L3 larvae have been surface radiolabelled using the Iodogen technique.
David Taylor +2 more
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Intracytoplasmic Bacteria in Onchocerca Volvulus
The American Journal of Tropical Medicine and Hygiene, 1977Ultrastructural studies on Onchocerca volvulus disclosed intracellular organisms within the lateral chords of adult worms and of the larval stages. In the females the organisms were also present in the oogonia, oocytes, developing eggs and microfilariae.
Horacio Figueroa Marroquin +1 more
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