Abstract
Abstract Transforming growth factor-bate (TGF-β) is a growth-relating peptide that has been shown to enhance collagen production in vivo and in vitro. TGF-β isoforms include TGF-β 1, β2 and β3. TGF-β receptors subtypes include type I (TGFβRI) and type II (TGFβRII) receptors. Overproduction of TGF-β can lead to real damage. Renal graft rejection is major problem after kidney transplantation with severe renal damage. We hypothesized that renal tissue level of TGF-β may increase in renal rejection after kidney transplantation. Therefore, the current study was designed to determine the TGF-β 1 isoform and its receptor TGFβRI in human renal tissue with rejection by immunohistochemical staining (IHCS) and compared with normal human renal tissue. The results of IHCS was evaluated by IHCS staining density scores (0, no staining; 1, minimal staining; 2, mild staining; 3, moderate staining; and 4, strong staining). The positive staining area (+%) in entire section was also determined. The sections treated with preabsorbed blocking peptide or nonimmune rabbit serum demonstrated no immunoperoxidase activity.
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