培养的正常和瘢痕角质形成细胞上清液对瘢痕成纤维细胞增殖和胶原合成的影响

目的 研究培养的正常角质形成细胞、瘢痕角质形成的细胞的上清液对增生性瘢痕成纤维细胞生物活性和胶原合成的影响。方法 采用MTT、^3H-脯氨酸掺入法、Ⅲ型前胶原放免试剂盒测定不同来源、不同浓茺培养的角度形成细胞上清液，对增生性瘢痕成纤细胞增殖和胶原合成的影响。结果 正常角质形成细胞上清液，可抑制瘢痕成纤维细胞增殖，对细胞内胶原合成有一定的促进作用，但却抑制细胞内胶原向细胞外分泌。瘢痕角质形成细胞上清液，对增生性瘢痕成纤维细胞增殖的抑制作用不明显，甚至还有促进的趋势，对细胞内外胶原合成、分泌皆有明显的促进作用。结论 正常角质形成细胞与瘢痕角质形成细胞分泌的物质对瘢痕成纤维细胞具有不同作用。

Effects of conditioned medium derived from different keratinocytes on proliferation and collagen synthesis of hypertrophic scar fibroblasts

Objective To observe the effects of supernatants of normal skin keratinocytes(NK) and scar keratinocytes(SK) on proliferation and collagen synthesis of hypertrophic scar fibroblasts(HSFB). Methods The supernatant,collected from cultured NK and SK,was added to the cultivated HSFB.The MTT|method, 3H|proline incorporation and radioimmunoassay were employed to measure the cell proliferation,collagen synthesis and secretion. Results NK supernatant could inhibit HSFB proliferation and increase the collagen synthesis,but inhibit collagen secretion,as compared with the control group.On the contrary,SK supernatant could increase collagen synthesis and secretion,which had little effects on HSFB proliferation. Conclusion Keratinocytes derived from normal skin and hypertrophic scar show different effects on hypertrophic scar fibroblasts.;