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- W1968973800 endingPage "1471" @default.
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- W1968973800 abstract "Histamine is a biogenic amine responsible for multiple biological actions including regulation of physiological functions of mammary gland. It has been postulated that histamine plays a critical role in proliferation of normal and cancer cells. To investigate the biological responses that histamine exerts in malignant cells derived from human mammary gland, we evaluated in MDA-MB-231 line the expression of histamine receptors, histamine intracellular content, the capacity of histamine to influence proliferation, cell cycle progression, differentiation and apoptosis. We also studied histamine involvement in cellular response to ionizing radiation. HBL-100 cells were used as control of non-tumorigenic breast cells. Proliferation and surviving fraction were assessed by clonogenic assay. Cell cycle progression and lipid accumulation were determined by flow cytometry while apoptosis was studied by Annexin V and DNA fragmentation assays. Both cell lines expressed the four histamine receptors subtypes as evaluated by western blot and RT-PCR analyses, and present endogenous histamine. Histamine regulated proliferation of cancer cells in a dose-dependent way and 10 μM histamine reduced significantly proliferation to 23% inducing cell cycle arrest in G2/M phase, differentiation by 26% and a significant increase in the number of apoptotic cells (p" @default.
- W1968973800 created "2016-06-24" @default.
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- W1968973800 date "2006-11-14" @default.
- W1968973800 modified "2023-10-01" @default.
- W1968973800 title "Histamine-mediated signaling processes in human malignant mammary cells" @default.
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- W1968973800 doi "https://doi.org/10.4161/cbt.5.11.3273" @default.
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