title: Placenta extract promote liver regeneration in CCl4-injured liver rat model.
abstract: The human placenta is an organ for fetus development and abundant reservoir of various bioactive molecules. Interest to human placenta extract (hPE) is growing, and application with trial of hPE is widening in oriental medicine including in liver diseases. However, underlying mechanisms for therapeutic effects are still unclear. Here, we investigated therapeutic effects of hPE in carbon tetrachloride (CCl(4))-injured rat liver model in vivo and in damaged rat hepatic cells exposed to CCl(4) in vitro. In addition, regulation of inflammatory responses by treatment of hPE was investigated. Serum levels of GOT/AST and GPT/ALT were significantly reduced (P<0.05), and uptake/excretion of indocyanine green in serum was significantly induced at 3 weeks after intravenous hPE administration in CCl(4)-injured rat model (P<0.05). Expression of type I collagen (Col I) and α-smooth muscle actin (α-SMA) was decreased, whereas that of matrix metalloproteinase-9 (MMP-9) was increased resulting in improvement of score for fibrotic grade in hPE group. Also, albumin, proliferation activities and molecules associated with liver regeneration (e.g. interleukin-6, gp130, ATP binding cassette transporters, cyclin A) were more increased in hPE administration group than Non-hPE group. hPE administration suppressed activated T-cell proliferation via increasing anti-inflammatory cytokines and decreasing pro-inflammatory cytokines. These results suggest that hPE could be effective for liver disease through reduction of fibrosis, induction of liver regeneration, and regulation of inflammatory responses. These findings are important for understanding the roles of hPE and provide evidences for therapeutic effects of hPE in hepatic diseases which could lead to potential clinical applications.
authors.affiliation: Department of Biomedical Science, CHA University, Seoul, Republic of Korea.
authors.forename: Jieun
authors.initials: J
authors.lastname: Jung
authors.forename: Hyun-Jung
authors.initials: HJ
authors.lastname: Lee
authors.forename: Jung Min
authors.initials: JM
authors.lastname: Lee
authors.forename: Kyu-Hwan
authors.initials: KH
authors.lastname: Na
authors.forename: Seong-Gyu
authors.initials: SG
authors.lastname: Hwang
authors.forename: Gi Jin
authors.initials: GJ
authors.lastname: Kim
mesh_terms: D018528:ATP-Binding Cassette Transporters / Q000378:metabolism; D000199:Actins / Q000037:antagonists & inhibitors / Q000235:genetics; D000418:Albumins / Q000378:metabolism; D019883:Alkyl and Aryl Transferases / Q000097:blood; D000818:Animals; D002251:Carbon Tetrachloride / Q000633:toxicity; D049109:Cell Proliferation / Q000187:drug effects; D056486:Chemical and Drug Induced Liver Injury / Q000188:drug therapy* / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D024042:Collagen Type I / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism; D019925:Cyclin A / Q000378:metabolism; D016207:Cytokines / Q000378:metabolism; D005260:Female; D005355:Fibrosis / Q000188:drug therapy; D022781:Hepatocytes / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D007208:Indocyanine Green / Q000493:pharmacokinetics; D007249:Inflammation / Q000188:drug therapy / Q000378:metabolism; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008115:Liver Regeneration / Q000187:drug effects* / Q000235:genetics; D008297:Male; D020780:Matrix Metalloproteinase 9 / Q000235:genetics; D010924:Placental Extracts / Q000737:chemistry / Q000494:pharmacology*; D011247:Pregnancy; D051381:Rats; D017207:Rats, Sprague-Dawley; D013601:T-Lymphocytes / Q000187:drug effects; D017855:Transferases (Other Substituted Phosphate Groups) / Q000097:blood
chemical_list: D018528:ATP-Binding Cassette Transporters; D000199:Actins; D000418:Albumins; D019883:Alkyl and Aryl Transferases; D002251:Carbon Tetrachloride; D024042:Collagen Type I; D019925:Cyclin A; D016207:Cytokines; D007208:Indocyanine Green; D020780:Matrix Metalloproteinase 9; D010924:Placental Extracts; D017855:Transferases (Other Substituted Phosphate Groups); C498862:Acta2 protein, rat; C112459:geranylpyrophosphate olivetolate geranyltransferase; C106504:UDP-GlcNAc-undecaprenyl phosphate N-acetylglucosaminyl 1-phosphate transferase