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Citations to this article

Mediators of histamine release from human platelets, lymphocytes, and granulocytes
Michael T. Kelly, … , R. Russell Martin, Arthur White
Michael T. Kelly, … , R. Russell Martin, Arthur White
Published May 1, 1971
Citation Information: J Clin Invest. 1971;50(5):1044-1049. https://doi.org/10.1172/JCI106575.
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Research Article

Mediators of histamine release from human platelets, lymphocytes, and granulocytes

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Abstract

Lysates of mixed human leukocyte suspensions released histamine from intact human leukocytes in vitro. Microgram quantities of leukocyte lysate protein released up to 90% of the total available histamine. The mixed leukocyte lysates were separated by differential centrifugation into nuclear (800 g pellet), lysosomal (25,000 g pellet), and postlysosomal supernatant (25,000 g supernatant) fractions. The degree of separation of the lysosomal from the other two fractions was assessed by measuring the relative activities of four lysosomal enzymes. The average distribution of enzyme activity was 11 ±2% (mean ±1 SD), 72 ±10%, and 17 ±8% for the nuclear, lysosomal, and supernatant fractions respectively. The histamine-releasing activity was equally distributed between the lysosomal and supernatant fractions, each of which had 5-fold greater activity than the nuclear fraction.

Authors

Michael T. Kelly, R. Russell Martin, Arthur White

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