Effects of histamine and related compounds on the differentiation of HL-60-Eo cells into eosinophils.
Methods Find Exp Clin Pharmacol
; 23(7): 383-8, 2001 Sep.
Article
in En
| MEDLINE
| ID: mdl-11771852
ABSTRACT
The effects of histamine and related compounds on the differentiation of HL-60-Eo cells into eosinophils were studied. The histamine and H2 agonists impromidine and 4-methylhistamine caused concentration-related increases in the number of differentiated cells. On the other hand, the H1 agonists 2-methylhistamine and 2-pyndylethylamine showed no such effect. Histamine-induced eosinophil differentiation was antagonized by the H2 antagonists cimetidine and ranitidine. Histamine and H2 agonists inhibited (3H)-thymidine uptake, suggesting that these compounds caused a decrease in proliferation. Histamine as well as the H2 agonists impromidine and 4-methythistamine caused increases in cAMP level, and this effect was antagonized by ranitidine. From these findings, we concluded that both the differentiation of HL-60-Eo cells into eosinophils and proliferation of HL-60-Eo cells were mediated via H2 receptors.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Histamine
/
HL-60 Cells
/
Eosinophils
Limits:
Humans
Language:
En
Journal:
Methods Find Exp Clin Pharmacol
Year:
2001
Document type:
Article
Affiliation country:
Japan