Rubenstein M, Shaw MW, Dubin A, Guinan PD. Adherent spleen cell production of E series prostaglandins in rats bearing variants of the R3327 Dunning prostatic adenocarcinoma: effect of cyclophosphamide.
JOURNAL OF IMMUNOPHARMACOLOGY 1986;
8:145-63. [PMID:
3088126 DOI:
10.3109/08923978609028613]
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Abstract
Prostaglandins of the E series (PGE) have been implicated in many facets of immunoregulation, as well as having a possible role in metastatic dissemination. Variant sublines of the Dunning R3327 rat prostatic adenocarcinoma, differing in growth rate, hormonal responsiveness and in propensity for metastasis, were carried in Fisher X Copenhagen F1 animals. Adherent spleen cells were assayed in vitro for their ability to convert arachidonic acid to prostaglandins of the E series. These glass adherent cells presumably include the monocytic and T cell populations which have been implicated as being immunoregulatory. The results indicated that those spleen cells obtained from animals carrying the metastatic R3327-MAT-LyLu subline tumor converted more arachidonic acid to PGE's than cells derived from animals bearing non-metastatic sublines. Cyclophosphamide therapy did not alter such conversion. Multiple regulatory mechanisms for prostaglandin metabolism are suggested.
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