ArticleFrontiers in medicine2026
Local Surgicel/rhBMP-7 delivery is associated with renal repair responses after surgically induced acute kidney injury.
Article in Frontiers in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Surgically induced acute kidney injury (AKI) may involve both ischemia-reperfusion and direct mechanical damage to the renal parenchyma, potentially affecting subsequent tissue repair and remodeling. Although bone morphogenetic protein-7 (BMP-7) has shown renoprotective effects in experimental models of acute kidney injury, most studies have evaluated systemic administration in relatively homogeneous injury models. The effects of local BMP-7 delivery in the setting of combined ischemic and surgical parenchymal injury remain insufficiently defined. In this study, a rat model combining transient renal ischemia-reperfusion with a standardized parenchymal incision was used to investigate renal repair following surgical injury. Recombinant human BMP-7 (rhBMP-7) was applied locally to the injured renal parenchyma using Surgicel as a carrier. Serum renal function measures, tubular injury, proliferative activity, fibrosis-associated remodeling, and selected repair- and BMP-associated signaling markers were evaluated at 7 and 28 days after injury. Local Surgicel/rhBMP-7 application was associated with lower serum blood urea nitrogen and creatinine levels at day 7 compared with the suturing-only surgical-injury group. Histopathological tubular injury was observed in both groups, without significant between-group differences. Increased numbers of proliferating cell nuclear antigen (PCNA)-positive tubular epithelial cells were observed in the Surgicel/rhBMP-7 group at both analyzed time points. Compared with the suturing-only group, the Surgicel/rhBMP-7 group showed higher Wnt-4 immunoreactivity at both time points and higher phosphorylated Smad1/5/8 immunoreactivity at day 28, compatible with differences in BMP-associated signaling. Histological analysis demonstrated a reduced collagen-positive area in the Surgicel/rhBMP-7 group, accompanied by a time-dependent pattern of
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