Duke B. O. L. 1972. Onchocerciasis. Br. Med. Bull., 28 :66–71
Duke B. O. L. 1967. Infective filarial larvae, other than Onchocerca volvulus, in Simulium damnosum. Trap. Med. Parasit., 61 :200–205
Garms R. & Voelker J. 1969. Unknown filarial larvae and zoophily in Simulium damnosum in Liberia. Trans. R. Soc. Trap. Med. Hyg., 63 :676–677
Garms R. 1983. Studies of the transmission of Onchocerca volvulus by species of the Simulium damnosum complex occurring in Liberia. Z. Angew. Zool., 70 :101–117
Nelson G. S. & Pester F. R. N. 1962. The identification of infective larvae in Simuliidae. Bull. W.H.O., 27 :473–481
Garms R. 1985. Morphological differentiation from Onchocerca volvulus of first stage larvae of an unknown filarial species commonly found in Simulium sanctipauli s.l. in Liberia. Trap. Med. Parasit., 36 :255–256
Omar M.S., Denke A. M. & Raybould J. N. 1979. The development of O. ochengi to the infective stage in Simulium damnosum s.l.. Tropenmed. Parasit., 30 :157–162
Walsh J. F., Davies J. B., Le Berre & Garms R. 1978. Standardization of criteria for assessing the effect of Simulium control in onchocerciasis control programme. Trans. R. Soc. Trap. Med. Hyg., 72 :675–676
Nelson G. S. 1970. Onchocerciasis. Pages 173–224 inDaves B., ed., Advances in Parasitology, Volume 8. Academic Press, London and New York.
Duke B. O. L. 1976. Strains of Onchocerca volvulus and their pathogenicity. Tropenmed. Parasitol., 27 :21–22
Duke B. O. L., Lewis D. J. & Moore P. J. 1966. Onchocerca-simulium complexes. I. Transmission of forest and Sudan savanna strains of Onchocerca volvulus from Cameroon by Simulium damnosum of various West African bioclimatic zones. Ann. Trop. Med. Parasit., 60 :318–335
Lewis D. J. & Duke B. O. L. 1966. Onchocerca-Simulium complexes. II. Variation in West African female Simulium damnosum. Ann. Trap. Med. Parasitol., 60 :337–346
De Leon J. R. & Duke B. O. L. 1966. Experimental studies on the transmission of Guatemalan and West African strains of O. volvulus by Simulium ochraceum, S. metallicum and S. callidum. Trans. R. Soc. Trap. Med. Hyg., 60 :735–752
Duke B. O. L. 1967. Onchocerca-Simulium complexes. IV. Transmission of a variant of a forest strain of Onchocerca volvulus. Ann. Trap. Med. Parasit., 61 :326–331
Duke B. O. L., Moore P. J. & De Leon J. R. 1967. Onchocerca-Simulium complexes. V. The intake and subsequent fate of microfilariae of a Guatemalan strain of Onchocerca volvulus in forest and Sudan savanna forms of the West African Simulium damnosum. Ann. Trap. Med. Parasit., 61 :332–337
Duke B. O. L. 1970. Onchocerca-Simulium complexes. VI. Experimental studies on the transmission of Venezuelan and West African strains of Onchocerca volvulus by Simulium metallicum and S. exiguum in Venezuela. Ann. Trap. Med. Parasit., 64 :421–431
Budden F. H. 1963. Comparative study of occular onchocerciasis in savanna and rain forest. Trans. R. Soc. Trap. Med. Hyg., 57 :64–70
Anderson J., Fuglsang H., Hamilton P. J. S. & de C. Marshall T. F. 1974. Studies on onchocerciasis in the United Cameroon Republic. II. Comparison of onchocerciasis in rain forest and Sudan savanna. Trans. R. Soc. Trap. Med. Hyg., 68 :209–222
Anderson J., Fuglsang H. & de C. Marshall T. F. 1976. Studies on onchocerciasis in the United Cameroon Republic. III. A four year follow-up of 6 rain forest and 6 Sudan savanna villages. Trans. R. Soc. Trap. Med. Hyg., 70 :362–373
Prost A., Rougemont A. & Omar M. S. 1980. Caracteres epidemiologiques, cliniques et biologiques des onchocercoses de sa vane et de forêt en Afrique occidentale. Ann. Parasit., 55 :347–355
Duke B. O. L. & Anderson J. 1972. A comparison of the lesions produced in the cornea of the rabbit eye by microfilariae of the forest and Sudan savanna strains of Onchocerca volvulus from Cameroon. Z. Tropenmed. Parasit., 23 :354–368
Omar M. S. 1978. Histochemical enzyme straining patterns of Onchocerca volvulus micro filariae and their occurrence in different onchocerciasis areas. Tropenmed. Parasit., 29 :462–472
Bryceson A. D. M., Schillhorn van Veen K., Oduloju A. J. & Duke B. O. L. 1976. Antigenic diversity among Onchocerca volvulus in Nigeria and immunological differences between onchocerciasis in the savanna and forest of Cameroon. Clin. Exp. Immunol., 24 :168–176
Lobos E. & Weiss N. 1985. Immunological comparison between worm extracts of Onchocerca volvulus from savanna and rain forest. Parasite Immunol., 7 :333–347
Cianchi R., Karam M., Henry M. C., Villani F., Kumlien S. & Bulhini L. 1985. Preliminary data on the genetic differentiation of Onchocerca volvulus in Africa (Nematoda: Filarioidea). Acta Trap., 42 :341–351
Flavel R. B. 1982. Sequence amplification, deletion and rearrangement: Major sources of variation during species divergence. Pages 301–323 inDover G. A., Flavel R. B., eds., Genome Evolution. Academic Press, New York.
Wirth D. F. & McMahon-Pratt D. 1982. Rapid identification of Leishmania species by specific hybridization of kinetoplast DNA. Proc. Natl. Acad. Sci. USA, 77 :6999–7003
Enea V. 1983. Sensitive and specific DNA probe for detection of Plasmodium falciparum. Mol. Cell. Biol., 6 :321–324
Barker R. H. Jr., Suebsaeng H., Rooney W., Alecrim G. C., Dourado H. V. & Wirth D. F. 1986. Specific DNA probe for the diagnosis of Plasmodium falciparum malaria. Science, 231 :434–436
McReynolds L. A., De Simone S. M. & Williams S. A. 1986. Cloning and comparison of repeated DNA sequences from the human filarial parasite Brugia malayi and the animal parasite Brugia pahangi. Proc. Natl. Acad. Sci. USA, 83 :797–801
Sim B. K. L., Piessens W. F. & Wirth D. F. 1986. A DNA probe cloned in E. coli for the identification of Brugia malayi. Mol. Biochem. Parasitol., 19 :117–123
Perter F. B. & Karam M. 1986. Cloning and characterization of two Onchocerca volvulus repeated DNA sequences. Mol. Biochem. Parasit., 21 :171–178
Shah J. S., Lamontagne L., Unnasch T. R., Wirth D. F. & Piessens W. F. 1986. Characterization of a ribosomal DNA clone of B. malayi. Mol. Biochem. Parasit., 19 :67–75
Schulz-Key H., Albiez E. J. & Buttner D. W. 1977. Isolation of living adult Onchocerca volvulus from nodules. Tropenmed. Parasit., 28 :428–430
Unnasch T. R. & Wirth D. F. 1983. The avian malaria Plasmodium/ophurae has a small number of heterogeneous ribosomal RNA genes. Nucl. Acid Res., 11 :8443–8459
Maniatis T., Fritsch E. F. & Sambrook J. 1982. Molecular Cloning, a Laboratory Manual, Cold Spring Harbor Laboratory, Cold Spring, New York.
Southern E. M. 1975. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J. Malec. Biol., 98 :503–517
Rigby P. W. J., Dickerman M., Rhodes C. & Berg P. 1977. Labelling deoxyribonucleic acid to high specific activity in vitro by nick-translation with DNA polymerase. J. Molec. Biol., 113 :237–251
McDonnell M. W., Simon M. N. & Studier F. W. 1977. Analysis of restriction fragment of T7 DNA and determination of molecular weight by electrophoresis in neutral and alkaline gels. J. Molec. Biol., 110 :119–147
Sanger F., Nicklen S. & Coulson A. R. 1977. DNA sequencing with chain terminating inhibitors. Proc. Natl. Acad. Sci. USA, 74 :5463–5467
Long E. O. & David I. B. 1980. Repeated genes in eukaryotes. Ann. Rev. Biochem., 49 :727–764
Bain O. 1981. Le genre Onchocerca; hypotheses sur son evolution et cle dichorotique des especes. Ann. Parasit., 56 :503–526
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A 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. The recombinant plasm ids had a low level of homology to Dirofilaria immitis. All recombinant plasmids contain related DNA sequences based on Southern hybridization analysis. Sequences related to these recombinant plasmids are present in different geographic isolates of O. volvulus and O. ochengi, an animal parasite. Two of the recombinant plasmids contain sequences also found in O. lienalis. One recombinant plasmid, puOvs3, has been characterized in detail, including DNA sequence determination. Radiolabeled puOvs3 is able to detect 100 pg of genomic DNA isolated from O. volvulus worms from both savanna and forest regions. It can differentiate O. volvulus from O. ochengi by Southern blot analysis.
Address reprint requests to: Dr. Dyann Wirth, Department of Tropical Public Health, Harvard School of Public Health, 665 Huntington Avenue, Boston, Massachusetts 02115.
Duke B. O. L. 1972. Onchocerciasis. Br. Med. Bull., 28 :66–71
Duke B. O. L. 1967. Infective filarial larvae, other than Onchocerca volvulus, in Simulium damnosum. Trap. Med. Parasit., 61 :200–205
Garms R. & Voelker J. 1969. Unknown filarial larvae and zoophily in Simulium damnosum in Liberia. Trans. R. Soc. Trap. Med. Hyg., 63 :676–677
Garms R. 1983. Studies of the transmission of Onchocerca volvulus by species of the Simulium damnosum complex occurring in Liberia. Z. Angew. Zool., 70 :101–117
Nelson G. S. & Pester F. R. N. 1962. The identification of infective larvae in Simuliidae. Bull. W.H.O., 27 :473–481
Garms R. 1985. Morphological differentiation from Onchocerca volvulus of first stage larvae of an unknown filarial species commonly found in Simulium sanctipauli s.l. in Liberia. Trap. Med. Parasit., 36 :255–256
Omar M.S., Denke A. M. & Raybould J. N. 1979. The development of O. ochengi to the infective stage in Simulium damnosum s.l.. Tropenmed. Parasit., 30 :157–162
Walsh J. F., Davies J. B., Le Berre & Garms R. 1978. Standardization of criteria for assessing the effect of Simulium control in onchocerciasis control programme. Trans. R. Soc. Trap. Med. Hyg., 72 :675–676
Nelson G. S. 1970. Onchocerciasis. Pages 173–224 inDaves B., ed., Advances in Parasitology, Volume 8. Academic Press, London and New York.
Duke B. O. L. 1976. Strains of Onchocerca volvulus and their pathogenicity. Tropenmed. Parasitol., 27 :21–22
Duke B. O. L., Lewis D. J. & Moore P. J. 1966. Onchocerca-simulium complexes. I. Transmission of forest and Sudan savanna strains of Onchocerca volvulus from Cameroon by Simulium damnosum of various West African bioclimatic zones. Ann. Trop. Med. Parasit., 60 :318–335
Lewis D. J. & Duke B. O. L. 1966. Onchocerca-Simulium complexes. II. Variation in West African female Simulium damnosum. Ann. Trap. Med. Parasitol., 60 :337–346
De Leon J. R. & Duke B. O. L. 1966. Experimental studies on the transmission of Guatemalan and West African strains of O. volvulus by Simulium ochraceum, S. metallicum and S. callidum. Trans. R. Soc. Trap. Med. Hyg., 60 :735–752
Duke B. O. L. 1967. Onchocerca-Simulium complexes. IV. Transmission of a variant of a forest strain of Onchocerca volvulus. Ann. Trap. Med. Parasit., 61 :326–331
Duke B. O. L., Moore P. J. & De Leon J. R. 1967. Onchocerca-Simulium complexes. V. The intake and subsequent fate of microfilariae of a Guatemalan strain of Onchocerca volvulus in forest and Sudan savanna forms of the West African Simulium damnosum. Ann. Trap. Med. Parasit., 61 :332–337
Duke B. O. L. 1970. Onchocerca-Simulium complexes. VI. Experimental studies on the transmission of Venezuelan and West African strains of Onchocerca volvulus by Simulium metallicum and S. exiguum in Venezuela. Ann. Trap. Med. Parasit., 64 :421–431
Budden F. H. 1963. Comparative study of occular onchocerciasis in savanna and rain forest. Trans. R. Soc. Trap. Med. Hyg., 57 :64–70
Anderson J., Fuglsang H., Hamilton P. J. S. & de C. Marshall T. F. 1974. Studies on onchocerciasis in the United Cameroon Republic. II. Comparison of onchocerciasis in rain forest and Sudan savanna. Trans. R. Soc. Trap. Med. Hyg., 68 :209–222
Anderson J., Fuglsang H. & de C. Marshall T. F. 1976. Studies on onchocerciasis in the United Cameroon Republic. III. A four year follow-up of 6 rain forest and 6 Sudan savanna villages. Trans. R. Soc. Trap. Med. Hyg., 70 :362–373
Prost A., Rougemont A. & Omar M. S. 1980. Caracteres epidemiologiques, cliniques et biologiques des onchocercoses de sa vane et de forêt en Afrique occidentale. Ann. Parasit., 55 :347–355
Duke B. O. L. & Anderson J. 1972. A comparison of the lesions produced in the cornea of the rabbit eye by microfilariae of the forest and Sudan savanna strains of Onchocerca volvulus from Cameroon. Z. Tropenmed. Parasit., 23 :354–368
Omar M. S. 1978. Histochemical enzyme straining patterns of Onchocerca volvulus micro filariae and their occurrence in different onchocerciasis areas. Tropenmed. Parasit., 29 :462–472
Bryceson A. D. M., Schillhorn van Veen K., Oduloju A. J. & Duke B. O. L. 1976. Antigenic diversity among Onchocerca volvulus in Nigeria and immunological differences between onchocerciasis in the savanna and forest of Cameroon. Clin. Exp. Immunol., 24 :168–176
Lobos E. & Weiss N. 1985. Immunological comparison between worm extracts of Onchocerca volvulus from savanna and rain forest. Parasite Immunol., 7 :333–347
Cianchi R., Karam M., Henry M. C., Villani F., Kumlien S. & Bulhini L. 1985. Preliminary data on the genetic differentiation of Onchocerca volvulus in Africa (Nematoda: Filarioidea). Acta Trap., 42 :341–351
Flavel R. B. 1982. Sequence amplification, deletion and rearrangement: Major sources of variation during species divergence. Pages 301–323 inDover G. A., Flavel R. B., eds., Genome Evolution. Academic Press, New York.
Wirth D. F. & McMahon-Pratt D. 1982. Rapid identification of Leishmania species by specific hybridization of kinetoplast DNA. Proc. Natl. Acad. Sci. USA, 77 :6999–7003
Enea V. 1983. Sensitive and specific DNA probe for detection of Plasmodium falciparum. Mol. Cell. Biol., 6 :321–324
Barker R. H. Jr., Suebsaeng H., Rooney W., Alecrim G. C., Dourado H. V. & Wirth D. F. 1986. Specific DNA probe for the diagnosis of Plasmodium falciparum malaria. Science, 231 :434–436
McReynolds L. A., De Simone S. M. & Williams S. A. 1986. Cloning and comparison of repeated DNA sequences from the human filarial parasite Brugia malayi and the animal parasite Brugia pahangi. Proc. Natl. Acad. Sci. USA, 83 :797–801
Sim B. K. L., Piessens W. F. & Wirth D. F. 1986. A DNA probe cloned in E. coli for the identification of Brugia malayi. Mol. Biochem. Parasitol., 19 :117–123
Perter F. B. & Karam M. 1986. Cloning and characterization of two Onchocerca volvulus repeated DNA sequences. Mol. Biochem. Parasit., 21 :171–178
Shah J. S., Lamontagne L., Unnasch T. R., Wirth D. F. & Piessens W. F. 1986. Characterization of a ribosomal DNA clone of B. malayi. Mol. Biochem. Parasit., 19 :67–75
Schulz-Key H., Albiez E. J. & Buttner D. W. 1977. Isolation of living adult Onchocerca volvulus from nodules. Tropenmed. Parasit., 28 :428–430
Unnasch T. R. & Wirth D. F. 1983. The avian malaria Plasmodium/ophurae has a small number of heterogeneous ribosomal RNA genes. Nucl. Acid Res., 11 :8443–8459
Maniatis T., Fritsch E. F. & Sambrook J. 1982. Molecular Cloning, a Laboratory Manual, Cold Spring Harbor Laboratory, Cold Spring, New York.
Southern E. M. 1975. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J. Malec. Biol., 98 :503–517
Rigby P. W. J., Dickerman M., Rhodes C. & Berg P. 1977. Labelling deoxyribonucleic acid to high specific activity in vitro by nick-translation with DNA polymerase. J. Molec. Biol., 113 :237–251
McDonnell M. W., Simon M. N. & Studier F. W. 1977. Analysis of restriction fragment of T7 DNA and determination of molecular weight by electrophoresis in neutral and alkaline gels. J. Molec. Biol., 110 :119–147
Sanger F., Nicklen S. & Coulson A. R. 1977. DNA sequencing with chain terminating inhibitors. Proc. Natl. Acad. Sci. USA, 74 :5463–5467
Long E. O. & David I. B. 1980. Repeated genes in eukaryotes. Ann. Rev. Biochem., 49 :727–764
Bain O. 1981. Le genre Onchocerca; hypotheses sur son evolution et cle dichorotique des especes. Ann. Parasit., 56 :503–526
Past two years | Past Year | Past 30 Days | |
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