pubmed-article:12605132 | pubmed:abstractText | Hypoxia inducible factor (HIF)-1, a heterodimeric transcription factor composed of alpha and beta subunits, is induced in the adaptive response to hypoxia and is critical for initiating the transcriptional activation of growth factors. We speculate that prolonged ischemia and hypoxia time leads to the production of HIF-1alpha, which in turn induces the production of fibrogenic cytokines in the graft. | lld:pubmed |