ArticleAnimal models and experimental medicine2026
Renal vessel-assisted anastomosis improves the abdominal heart transplant model in rats without bilateral lower limb ischemia.
Article in Animal models and experimental 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
backgroundThe traditional method of heterotopic abdominal heart transplantation (HTx) involves cross-clamping the inferior vena cava, which inevitably leads to bilateral lower limb ischemia (LI). This study first aimed to investigate the impact of LI on renal function in rats subjected to unilateral nephrectomy (UNx). Second, a modified method utilizing renal vessel-assisted anastomosis in rats with left UNx was compared with the traditional method for abdominal HTx.
methodsMale Sprague-Dawley rats were utilized as subjects for both experimental phases. In experiment 1, the animals were divided into four groups: sham operation group; LI group-rats undergoing occlusion of the abdominal aorta and vena cava below the renal vessels; UNx group-rats with left UNx; and LI + UNx group. All operated animals were monitored for up to 7 days for biochemical markers, renal histopathology, and survival rates. In experiment 2, we introduced the renal vessel-assisted method as the experimental group and compared it against the traditional method as the control within rat heterotopic HTx models. We assessed operative characteristics, echocardiography results, histological findings, and graft survival.
resultsFirst, LI resulted in acute kidney dysfunction characterized by a decrease in 7-day survival rates and creatinine clearance rates in both the LI and LI + UNx groups compared to the sham operation and UNx groups. Particularly, histopathological damage in the kidney and liver did not exhibit significant effects during this period. Second, the implementation of the renal vessel-assisted method significantly reduced bleeding volume at suture sites and enhanced the 7-day survival rate compared to the traditional method.
conclusionAcute kidney injury was induced by LI postoperation in treated rats. The renal vessel-assisted method demonstrated its effectiveness as a superior alternative that mitigates complications associated with the traditional method.
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