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  • Title: Role of CXCR3 in cellular but not humoral renal allograft rejection.
    Author: Segerer S, Böhmig GA, Exner M, Kerjaschki D, Regele H, Schlöndorff D.
    Journal: Transpl Int; 2005 Jun; 18(6):676-80. PubMed ID: 15910293.
    Abstract:
    CXCR3, a chemokine receptor mainly expressed by T cells, is involved in animal transplant models and in human allograft rejection. CXCR3 expression was localized in formalin-fixed, paraffin-embedded renal allograft biopsies without signs of rejection (C4d-negative, Banff 0, n = 16), with C4d deposits as a sign of humoral rejection (C4d-positive, Banff 0, n = 8), with cellular rejection (C4d-negative, Banff I, n = 7) and with signs of both cellular and humoral rejection (C4d-positive, Banff 1, n = 5). Small, round infiltrating cells were CXCR3-positive. A high number of these cells was present in biopsies with cellular rejection (independent of C4d deposition). CXCR3-positive cells diffusely infiltrated the interstitium, including the tubular epithelium (tubulitis). CXCR3 scores and the area of CXCR3 staining were significantly higher in cellular rejection, when compared to biopsies without rejection, and with deposition of C4d alone. CXCR3-positive cells infiltrate renal allografts during cellular rejection, whereas C4d deposition is not associated with the recruitment of these cells.
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