title: Effects of pearl powder extract and its fractions on fibroblast function relevant to wound repair.
abstract: The water soluble matrix (WSM) of pearl powder [Hyriopsis cumingii Lea (Unionidae)] was extracted, and the insoluble residue was demineralized, size-fractionated, and named as MR14 (> 14 kDa), MR3-14 (3-14 kDa), and MR3 (< 3 kDa). The effects of WSM, MR14, MR3-14, and MR3 on primary mouse oral fibroblast proliferation, collagen accumulation, matrix metalloproteinase-2, -9 (MMP-2, -9) activities, and tissue inhibitor of metalloproteinase-1 (TIMP-1) production were tested by MTT assay, chloramine T method, gelatin zymography, and enzyme-linked immunosorbent assay (ELISA), respectively. The results showed that the WSM and MR14 could significantly (p < 0.05) promote fibroblast proliferation; all of the fractions could significantly promote collagen accumulation; MR14 significantly (p < 0.05) inhibited MMP-2 activity; and all of the fractions could significantly promote TIMP-1 production. This study has proved that the mechanism by which pearl powder promotes wound healing is partly due to its ability to stimulate fibroblast mitosis, collagen deposition, and TIMP-1 production, and the major active fraction may be MR14.
authors.affiliation: School of Food & Bioengineering, Jiangsu University, Zhenjiang, China.
authors.forename: Dai
authors.initials: D
authors.lastname: Jian-Ping
authors.forename: Chen
authors.initials: C
authors.lastname: Jun
authors.forename: Bei
authors.initials: B
authors.lastname: Yu-Fei
authors.forename: Han
authors.initials: H
authors.lastname: Bang-Xing
authors.forename: Guo
authors.initials: G
authors.lastname: Shang-Bin
authors.forename: Jiang
authors.initials: J
authors.lastname: Li-Li
mesh_terms: D000818:Animals; D000897:Anti-Ulcer Agents / Q000737:chemistry / Q000494:pharmacology*; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D005591:Chemical Fractionation; D003094:Collagen / Q000378:metabolism; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects; D008419:Materia Medica / Q000737:chemistry / Q000494:pharmacology*; D020778:Matrix Metalloproteinase 2 / Q000378:metabolism; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism; D008516:Medicine, Chinese Traditional; D051379:Mice; D008807:Mice, Inbred BALB C; D009061:Mouth Mucosa / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D011208:Powders; D012995:Solubility; D013997:Time Factors; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism; D049876:Unionidae / Q000737:chemistry*; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D000897:Anti-Ulcer Agents; D008419:Materia Medica; D011208:Powders; D019715:Tissue Inhibitor of Metalloproteinase-1; D003094:Collagen; D020778:Matrix Metalloproteinase 2; C522362:Mmp2 protein, mouse; D020780:Matrix Metalloproteinase 9; C501830:Mmp9 protein, mouse