An investigation of the optimal conditions for the in vivo production of immunologically sensitised rat mast cells

B. Jasani, D. R. Stanworth

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9 Citations (Scopus)

Abstract

Experiments were designed to develop an optimal method for inducing in vivo production of sensitised peritoneal mast cells. Rats of different strains were sensitised with whole egg-white and killed at suitable intervals to harvest the peritoneal mast cells. Release of histamine was induced in vitro by both whole egg-white and its major protein constituents, and assayed by a standard spectrofluorometric method. Wistar rats showed higher levels of sensitisation than black-hooded Lister rats; it was more convenient to harvest erythrocyte-free peritoneal mast cells from males than females. Very young (<150 g) and very old (>300 g) rats showed sub-optimal sensitisation. Optimal sensitisation was obtained by simultaneous administration of antigen (doses of 50 μg whole egg-white and above) and adjuvant (1.0 ml pertussis vaccine); mast cells harvested between 20 and 50 days after the sensitising dose exhibited maximal histamine release upon in vitro challenge with 'whole' egg-white (100 μg). Routine use of plastic ware, and ice-cold phosphate-buffered saline (pH 7.2) for handling cells, and avoidance of heparin and excessive centrifugation ensured optimal preservation of histamine-releasing capacity of the harvested peritoneal mast cells.

Original languageEnglish
Pages (from-to)55-68
Number of pages14
JournalJournal of Immunological Methods
Volume30
Issue number1
DOIs
Publication statusPublished - Oct 19 1979

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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