Extensive jejunal injury is repaired by migration and transdifferentiation of ileal enterocytes in zebrafish.

A major cause of intestinal failure (IF) is intestinal epithelium necrosis and massive loss of enterocytes, especially in the jejunum, the major intestinal segment in charge of nutrient absorption. However, mechanisms underlying jejunal epithelial regeneration after extensive loss of enterocytes remain elusive. Here, we apply a genetic ablation system to induce extensive damage to jejunal enterocytes in zebrafish, mimicking the jejunal epithelium necrosis that causes IF.

The CCCH-type zinc finger transcription factor Zc3h8 represses NF-κB-mediated inflammation in digestive organs in zebrafish.

Degenerative diseases of organs lead to their impaired function. The cellular and molecular mechanisms underlying organ degeneration are therefore of great research and clinical interest but are currently incompletely characterized. Here, using a forward-genetic screen for genes regulating liver development and function in zebrafish, we identified a mutant that exhibited a liver-degeneration phenotype at 5 days postfertilization, the developmental stage at which a functional liver develops.

Modified free vascularized fibular grafting for the treatment of femoral neck nonunion.

Objective: To evaluate a modified free vascularized fibular grafting procedure with an anterior approach to the hip as a treatment for femoral neck nonunions.

Design: Retrospective radiographic and clinical review.

Setting: Level I trauma center.