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. 1963;28(5-6):745–752.

Quantitative methods in the study of trypanosomes and their applications*

With special reference to diagnosis

W H R Lumsden
PMCID: PMC2554945  PMID: 20604152

Abstract

In the first part of this paper the author summarizes and discusses previous quantitative work on trypanosomes, with particular reference to biometrical studies, in vivo and in vitro studies on numbers of trypanosomes, studies on hosts infected with trypanosomes, and physiological studies.

The second part discusses recent work done at the East African Trypanosomiasis Research Organization. A method for the measurement of the infectivity of trypanosome suspensions, based on serial dilution and inoculation into test animals, is outlined, and applications likely to improve diagnostic procedures are suggested for it. Such applications might include: the establishment of experimental procedures not significantly reducing the infectivity of trypanosomes under experiment; determination of the effects on the infectivity of preserved material of some of the factors in the process of preservation, important for the preparation of standard material; comparison of the efficiency of different culture media for the isolation of trypanosomes; study of the distribution of trypanosomes in the vertebrate host; and measurement of the susceptibility of trypanosomes to drugs. The author stresses the importance of relating future experimental work with trypanosomes to preserved material for which comprehensive documentation is available.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. ASHCROFT M. T. An attempt to isolate trypanosoma rhodesiense from wild animals. Trans R Soc Trop Med Hyg. 1958 May;52(3):276–282. doi: 10.1016/0035-9203(58)90088-9. [DOI] [PubMed] [Google Scholar]
  2. ASHCROFT M. T. The Tinde experiment: a further study of the long-term cyclical transmission of Trypanosoma rhodesiense. Ann Trop Med Parasitol. 1959 Jun;53:137–146. doi: 10.1080/00034983.1959.11685911. [DOI] [PubMed] [Google Scholar]
  3. ASHCROFT M. T. The polymorphism of Trypanosoma brucei and T. rhodesiense, its relation to relapses and remissions of infections in white rats, and the effect of cortisone. Ann Trop Med Parasitol. 1957 Sep;51(3):301–312. doi: 10.1080/00034983.1957.11685819. [DOI] [PubMed] [Google Scholar]
  4. BAKER J. R. The influence of the number of trypanosomes inoculated on the prepatent period of the subsequent trypanosomiasis in laboratory rodents. Ann Trop Med Parasitol. 1960 Apr;54:71–74. doi: 10.1080/00034983.1960.11685958. [DOI] [PubMed] [Google Scholar]
  5. CHANDLER A. C., THILLET C. J., Jr Immunization against Trypanosoma lewisi in rats by injections of metabolic products. Science. 1957 Feb 22;125(3243):346–347. doi: 10.1126/science.125.3243.346. [DOI] [PubMed] [Google Scholar]
  6. DESOWITZ R. S. Effect of antibody on the respiratory rate of Trypanosoma vivax. Nature. 1956 Jan 21;177(4499):132–133. doi: 10.1038/177132b0. [DOI] [PubMed] [Google Scholar]
  7. GODFREY D. G. Types of Trypanosoma congolense. I. Morphological differences. Ann Trop Med Parasitol. 1960 Dec;54:428–438. [PubMed] [Google Scholar]
  8. HOARE C. A. Morphological and taxonomic studies on mammalian trypanosomes. VIII. Revision of Trypanosoma evansi. Parasitology. 1956 May;46(1-2):130–172. [PubMed] [Google Scholar]
  9. POLGE C., SOLTYS M. A. Preservation of trypanosomes in the frozen state. Trans R Soc Trop Med Hyg. 1957 Nov;51(6):519–526. doi: 10.1016/0035-9203(57)90041-x. [DOI] [PubMed] [Google Scholar]
  10. SMITH I. M. The protection against trypanosomiasis conferred on cattle by repeated boses of antrycide, alone or with Trypanosoma congolense. Ann Trop Med Parasitol. 1958 Dec;52(4):391–401. doi: 10.1080/00034983.1958.11685879. [DOI] [PubMed] [Google Scholar]
  11. THURSTON J. P. The effect of immune sera on the respiration of Trypanosoma brucei in vitro. Parasitology. 1958 Nov;48(3-4):463–467. doi: 10.1017/s0031182000021417. [DOI] [PubMed] [Google Scholar]
  12. Thompson W. R. USE OF MOVING AVERAGES AND INTERPOLATION TO ESTIMATE MEDIAN-EFFECTIVE DOSE: I. Fundamental Formulas, Estimation of Error, and Relation to Other Methods. Bacteriol Rev. 1947 Jun;11(2):115–145. [PMC free article] [PubMed] [Google Scholar]
  13. WEINMAN D. African sleeping sickness trypanosome: cultivation and properties of the culture forms. Ann N Y Acad Sci. 1953 Oct 14;56(5):995–1003. doi: 10.1111/j.1749-6632.1953.tb30279.x. [DOI] [PubMed] [Google Scholar]
  14. WEITZ B. The properties of some antigens of Trypanosoma brucei. J Gen Microbiol. 1960 Dec;23:589–600. doi: 10.1099/00221287-23-3-589. [DOI] [PubMed] [Google Scholar]
  15. WILLETT K. C. An experiment on dosage in human trypanosomiasis. Ann Trop Med Parasitol. 1956 Mar;50(1):75–80. doi: 10.1080/00034983.1956.11685740. [DOI] [PubMed] [Google Scholar]
  16. WILLETT K. C., FAIRBAIRN H. The Tinde experiment: a study of Trypanosoma rhodesiense during eighteen years of cyclical transmission. Ann Trop Med Parasitol. 1955 Oct;49(3):278–292. doi: 10.1080/00034983.1955.11685676. [DOI] [PubMed] [Google Scholar]

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