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Hypoxia, hypoxia-inducible factors and fibrogenesis in chronic liver diseases

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dc.contributor.authorCannito, Stefania
dc.contributor.authorPaternostro, Claudia
dc.contributor.authorBusletta, Chiara
dc.contributor.authorBocca, Claudia
dc.contributor.authorColombatto, Sebastiano
dc.contributor.authorMiglietta, Antonella
dc.contributor.authorNovo, Erica
dc.contributor.authorParola, Maurizio
dc.date.accessioned2018-12-12T15:39:44Z
dc.date.available2018-12-12T15:39:44Z
dc.date.issued2014
dc.description.abstractFibrogenic progression of chronic liver diseases (CLDs) towards the end-point of cirrhosis is currently regarded, whatever the aetiology, as a dynamic and highly integrated cellular response to chronic liver injury. Liver fibrogenesis (i.e., the process) is sustained by hepatic populations of highly proliferative, pro-fibrogenic and contractile myofibroblast-like cells (MFs) that mainly originate from hepatic stellate cells (HSC) or, to a less extent, from portal fibroblasts or bone marrow-derived cells. As is well known, liver fibrosis (i.e., the result) is accompanied by perpetuation of liver injury, chronic hepatitis and persisting activation of tissue repair mechanisms, leading eventually to excess deposition of extracellular matrix (ECM) components. In this scenario, hypoxic areas represent a very common and major feature of fibrotic and cirrhotic liver during the progression of CLDs. Cells exposed to hypoxia respond by means of heterodimeric hypoxia-inducible factors (HIFs) that translocate into the nucleus and binds to a specific core sequence defined hypoxia-responsive element (HRE), present in the promoter on several genes which are considered as hypoxia-regulated target genes. HIFs transcription factors can activate a complex genetic program designed to sustain several changes necessary to efficiently counteract the decrease in oxygen tension. Accordingly, hypoxia, through up-regulation of angiogenesis, is currently believed to significantly contribute to fibrogenic progression of CLDs, mostly by affecting the pro-fibrogenic and pro-angiogenic behaviour of hepatic MFs. In addition, experimental and clinical evidence generated in the last decade also indicates that angiogenesis and fibrogenesis in CLDs may also be sustained by HIF-dependent but hypoxia-independent mediators.es
dc.formatapplication/pdfes
dc.format.extent12es
dc.identifier.citationHistology and Histopathology, vol. 29, nº 1 (2014)
dc.identifier.issn1699-5848
dc.identifier.issn0213-3911
dc.identifier.urihttp://hdl.handle.net/10201/65321
dc.languageenges
dc.publisherF. Hernández y Juan F. Madrid. Universidad de Murcia. Departamento de Biología Celular e Histologíaes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectHypoxiaes
dc.subjectHypoxia-inducible factorses
dc.subject.otherCDU::5 - Ciencias puras y naturales::57 - Biología::576 - Biología celular y subcelular. Citologíaes
dc.titleHypoxia, hypoxia-inducible factors and fibrogenesis in chronic liver diseaseses
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol.29, nº 1 (2014)