[MicroRNA-29 and fibrosis diseases].

MicroRNAs(miRNAs,miR) are small,noncoding RNAs with 21-23 nucleotides.MicroRNA-29(miR-29),a newly discovered miRNAs,is closely related with fibrosis diseases.MiR-29 directly suppresses the expression of a variety of extracellular matrix components and regulates signaling pathways associated with fibrosis.The serum level of miR-29 in patients with liver disease is consistent with the degree of liver cirrhosis.