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Titolo:
MUSCARINIC ACETYLCHOLINE AND HISTAMINE-RECEPTOR MEDIATED CALCIUM MOBILIZATION AND CELL-GROWTH IN HUMAN OVARIAN-CANCER CELLS
Autore:
POPPER LD; BATRA S;
Indirizzi:
UNIV LUND HOSP,DEPT OBSTET & GYNECOL S-22185 LUND SWEDEN LUND UNIV,DEPT OBSTET & GYNECOL S-22101 LUND SWEDEN LUND UNIV,DEPT PHARMACOL S-22101 LUND SWEDEN KABI PHARM THERAPEUT AB LUND SWEDEN
Titolo Testata:
International journal of oncology
fascicolo: 2, volume: 4, anno: 1994,
pagine: 453 - 459
SICI:
1019-6439(1994)4:2<453:MAAHMC>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYTOSOLIC FREE CA-2+; ADENYLYL CYCLASE; CARCINOMA-CELLS; HYDROLYSIS; LINE; STIMULATION; SUBTYPES;
Keywords:
OVARIAN TUMOR CELLS; MUSCARINIC RECEPTORS; INTRACELLULAR CA2+; MITOGEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
L.D. Popper e S. Batra, "MUSCARINIC ACETYLCHOLINE AND HISTAMINE-RECEPTOR MEDIATED CALCIUM MOBILIZATION AND CELL-GROWTH IN HUMAN OVARIAN-CANCER CELLS", International journal of oncology, 4(2), 1994, pp. 453-459

Abstract

The effects of carbachol and histamine on changes in cytosolic-free calcium ([Ca2+]i) and cell proliferation have been characterized in human ovarian cancer cells (OVCAR-3) and non-tumourigenic Chinese hamsterovary cells (CHO). The muscarinic agonist carbachol increased [Ca2+]isignificantly with a rapid biphasic response due to both influx of extracellular calcium and release of calcium from intracellular stores. None of these effects were however seen in CHO cells. The increase in cellular calcium by carbachol was also confirmed by calcium uptake experiments using Ca-45. Carbachol increased Ca-45 uptake by 25% in OVCAR-3 cells but had no effect in CHO cells. Histamine also stimulated calcium mobilization in OVCAR-3 cells but had no effect in CHO cells. Theresponse to histamine was also biphasic although the calcium increasewas smaller than with carbachol. Data obtained with selective histamine antagonists showed that the response to histamine was mediated by H-1 histaminergic receptors. Both carbachol and histamine also stimulated cell growth of OVCAR-3 cells but were without effect on CHO cells. The cell proliferating effect of carbachol and of histamine on OVCAR-3cells as well as the increase in [Ca2+], was totally blocked by atropine and selective H-1 histaminergic receptor antagonist pyrilamine, respectively. Fetal calf serum (FCS) which increased [Ca2+]i in both cell lines also caused a substantial increase in cell growth in the two cell lines. Verapamil partially and TMB-8 totally blocked carbachol stimulated release of calcium from intracellular stores, whereas prenylamine had only a minor inhibitory effect on calcium influx. The effect of verapamil and TMB-8 were most likely resulted from their inhibition of cholinergic receptors rather than a direct inhibition of intracellular calcium release. The carbachol induced effects on calcium transients were also partially inhibited by pertussis toxin and the phorbol ester PMA. Our data suggest that the mitogenic action of carbachol occurs through an increase in [Ca2+]i which promote DNA synthesis and cell growth. These data also indicate the involvement of both a pertussis toxin sensitive and insensitive G-protein as well as protein kinase C in the signal transduction pathway induced by carbachol.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 18:38:41