title: Substance P up-regulates matrix metalloproteinase-1 and down-regulates collagen in human lung fibroblast.
abstract: Substance P is involved in inflammatory processes, but its effect on extracellular matrix metabolism has not been studied; therefore, the authors evaluated its effect on collagen synthesis and degradation, expression of pro-alpha1(I) collagen, matrix metalloproteinase-1 and -2, and tissue inhibitor of metalloproteinase-1 and -2 in normal human lung fibroblast strains. Substance P induced a decrease in collagen biosynthesis, concomitant to a down-regulation of pro-alpha1(I) collagen mRNA. In contrast, an increase in collagen degradation was observed, accompanied with an up-regulation of matrix metalloproteinase-1. Substance P did not influence tissue inhibitor of metalloproteinase-1 and -2 or matrix metalloproteinase-2 expression. The results suggest that substance P participates in extracellular matrix metabolism.
authors.affiliation: Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias, México, DF, México. mamora572002@yahoo.com.mx
authors.forename: Carlos
authors.initials: C
authors.lastname: Ramos
authors.forename: Martha
authors.initials: M
authors.lastname: Montaño
authors.forename: Jose
authors.initials: J
authors.lastname: Cisneros
authors.forename: Bettina
authors.initials: B
authors.lastname: Sommer
authors.forename: Javier
authors.initials: J
authors.lastname: Delgado
authors.forename: Georgina
authors.initials: G
authors.lastname: Gonzalez-Avila
mesh_terms: D000328:Adult; D049109:Cell Proliferation; D002478:Cells, Cultured; D002675:Child, Preschool; D003094:Collagen / Q000235:genetics / Q000378:metabolism*; D024042:Collagen Type I / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D015536:Down-Regulation; D004790:Enzyme Induction; D005260:Female; D005347:Fibroblasts / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D006801:Humans; D008168:Lung / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism* / Q000473:pathology; D008297:Male; D020781:Matrix Metalloproteinase 1 / Q000096:biosynthesis* / Q000235:genetics; D064729:Neurokinin-1 Receptor Antagonists; D012333:RNA, Messenger / Q000378:metabolism; D018040:Receptors, Neurokinin-1 / Q000378:metabolism; D013373:Substance P / Q000378:metabolism* / Q000494:pharmacology; D014364:Tryptophan / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D024042:Collagen Type I; D064729:Neurokinin-1 Receptor Antagonists; D012333:RNA, Messenger; D018040:Receptors, Neurokinin-1; C086089:3,5-bis(trifluoromethyl)benzyl N-acetyltryptophan; D013373:Substance P; D014364:Tryptophan; D003094:Collagen; D020781:Matrix Metalloproteinase 1