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U.S. Department of Energy
Office of Scientific and Technical Information

Production, purification and assay of thrombopoietin. Progress report, June 1, 1973--Julty 31, 1976. [Mice, /sup 35/S tracer technique, X radiation]

Technical Report ·
OSTI ID:7362339
The finding that kidney cells in culture can produce thrombopoietin provides a technique whereby large quantites of thrombopoietin can be produced and may provide the necessary preliminary data for the production of an International Thrombopoietin Laboratory Standard. Studies showed that human urine, as well as sera, contains the thrombopoietic factor. Other studies indicated that the kidney is at least involved in the production of thrombopoietin and may be the site of its production. Additional work was involved with platelet-specific antiserum action and how it causes thrombocytopenia in animals. Two additional studies were conducted which were designed to improve the bioassay for TSF. In the first study, mice were pretreated with both platelet-specific antisera and platelet hypertransfusions in an attempt to increase their sensitivity to TSF. In another study, platelet size, platelet count, and percent /sup 35/S incorporation were compared as methods for the measurement of thrombopoietin-stimulated thrombopoiesis. The finding that thrombopoietin is present in sera of thrombocytopenic mice after either x-ray or injection of platelet-specific antisera, may offer a new approach to production and assay of TSF. Other studies during this grant period were involved with purification of thrombopoietin from kidney cell culture media. An investigation on the effects of hypoxia on platelet counts in mice was also made.
Research Organization:
Tennessee Univ., Knoxville (USA). Memorial Research Center and Hospital
OSTI ID:
7362339
Report Number(s):
ORO-4465-14
Country of Publication:
United States
Language:
English