title: Effect of SACCHACHITIN on keratinocyte proliferation and the expressions of type I collagen and tissue-transglutaminase during skin wound healing.
abstract: SACCHACHITIN is a skin wound-healing membrane made of residual fruiting body of Ganoderma tsugae. Its effect on proliferating cell nuclear antigen (PCNA) expression in actively proliferating cells, type I collagen expression and tissue remodeling in the healing tissue, and the association of tissue-transglutaminase (t-TGase) with wound healing were investigated by immunohistochemical staining. The results demonstrated that PCNA expressed in keratinocytes since day 1 in the SACCHACHITIN group and persisted during entire healing process. In contrast, it was barely detectable on day 3 in the control group. At keratinocyte layer, the SACCHACHITIN group exhibited more type I collagen than did the control group since day 1. At scar tissue, type I collagen was positively stained in the SACCHACHITIN group since day 7 but not in the control group till day 12. Furthermore, t-TGase was strongly expressed on the inner wall of angiogenic vessels on day 5 of the control group but not on that of the SACCHACHITIN group until day 10. The earlier expressions of PCNA and type I collagen in the keratinocyte layer may lead to accelerated skin wound healing. In addition, the later expression of t-TGase, an indicator of apoptosis, on the inner wall of angiogenic capillaries in the SACCHACHITIN group may indicate a longer period of blood supply to the wound area, thus facilitating wound healing. These observed phenomena might underline the beneficial effects of SACCHACHITIN membrane on rapid wound healing.
authors.affiliation: Graduate Institute of Cell and Molecular Biology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, Taiwan 110.
authors.forename: Wei-Sheng
authors.initials: WS
authors.lastname: Hung
authors.forename: Wen-Fu T
authors.initials: WF
authors.lastname: Lai
authors.forename: Bowen
authors.initials: B
authors.lastname: Leu
authors.forename: Ching-Hua
authors.initials: CH
authors.lastname: Su
authors.forename: Chia-Lang
authors.initials: CL
authors.lastname: Fang
authors.forename: Yu-Hui
authors.initials: YH
authors.lastname: Tsai
mesh_terms: D000818:Animals; D049109:Cell Proliferation; D002921:Cicatrix / Q000378:metabolism; D024042:Collagen Type I / Q000378:metabolism*; D005109:Extracellular Matrix / Q000737:chemistry / Q000378:metabolism; D032902:Ganoderma; D015603:Keratinocytes / Q000166:cytology / Q000378:metabolism*; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D012867:Skin / Q000166:cytology / Q000378:metabolism* / Q000473:pathology; D017768:Skin, Artificial; D011503:Transglutaminases / Q000378:metabolism*; D014945:Wound Healing / Q000502:physiology*
chemical_list: D024042:Collagen Type I; D018809:Proliferating Cell Nuclear Antigen; D011503:Transglutaminases