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  • Title: Growth-inhibitory effect of prostaglandin D2 on mouse glioma cells.
    Author: Keyaki A, Handa H, Yamashita J, Tokuriki Y, Otsuka S, Yamasaki T, Gi H.
    Journal: J Neurosurg; 1984 Nov; 61(5):912-7. PubMed ID: 6491736.
    Abstract:
    The effects of prostaglandin D2 (PGD2) on the growth of mouse malignant glioma cells were studied in vitro and in vivo. The in vitro studies consisted of various concentrations of prostaglandins (PG's) being added to cultures of mouse glioma cells. At concentrations above 2.5 micrograms/ml, PGD2 strongly inhibited the proliferation of glioma cells, whereas PGE2 had no effect at the same value. Exposure to 5.0 micrograms/ml PGD2 for more than 2 hours resulted in inhibition of glioma cell proliferation. This growth-inhibitory effect of PGD2 was related to the inhibition of DNA synthesis of the cells. The in vivo studies were performed with a subcutaneously transplanted mouse glioma model. Injection of 0.5 mg/kg PGD2 into the tumor was more effective than the same concentration given by intraperitoneal injection. In mice with intracranially transplanted glioma, daily intraperitoneal injection of 0.5 mg/kg PGD2 had no significant effect on survival time.
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