Application prospect of fatty liver in liver transplantation / 中华肝胆外科杂志

Currently liver transplantation is the most effective treatment options for patients with end-stage liver disease, but the lack of donor livers limits the development of liver transplantation. With the increasing usage of marginal donor liver such as fatty donor liver, therefore how to make marginal donor liver play a better role has become a new research hotspot. Although the use of fatty liver as a donor can effectively alleviate the contradiction between recipient demand and donor organ shortage, the risk of early post-transplant graft dysfunction also increases. As donor of fatty liver, the degree of steatoidosis should be moderate or below as far as possible, which significantly reduces postoperative complications and promote the recovery of recipients. Meanwhile, it is essential to monitor the lipid indicators post the surgery, and drug intervention can be added if necessary, which may improve the function of the graft.

MiR-29a-3p Inhibits Proliferation and Osteogenic Differentiation of Human Bone Marrow Mesenchymal Stem Cells via Targeting FOXO3 and Repressing Wnt/β-Catenin Signaling in Steroid-Associated Osteonecrosis

Background and Objectives@#This study was to investigate the role of microRNA-29a-3p (miR-29a-3p) in human bone marrow mesenchymal stem cells (hBMSCs), and its relationship with steroid-associated osteonecrosis. @*Methods@#and Results: The online tool GEO2R was used to screen out the differentially expressed genes (DEGs) in GSE123568 dataset. Quantitative real time-polymerase chain reaction (qRT-PCR) was performed to detect the expression of miR-29a-3p, forkhead box O3 (FOXO3), alkaline phosphatase (ALP), bone gamma-carboxyglutamate protein (OCN) and RUNX family transcription factor 2 (Runx2) in the hBMSCs isolated from the patients with steroid-associated osteonecrosis. CCK-8 assay was executed to measure cell viability; western blot assay was utilized to detect FOXO3, ALP, Runx2, OCN and β-catenin expression. Cell apoptosis and cell cycle were detected by flow cytometry. Immunofluorescence assay was used to detect the sub-cellular localization of β-catenin. Bioinformatics analysis and luciferase reporter gene assay were performed to confirm whether miR-29a-3p can combine with FOXO3 3’UTR. MiR-29a-3p was markedly up-regulated in the hBMSCs of patients with steroid-associated osteonecrosis, while FOXO3 mRNA was significantly down-regulated. Transfection of miR-29a-3p mimics significantly inhibited the hBMSCs’ proliferation, osteogenic differentiation markers’ expressions, including ALP, Runx2, OCN, and repressed the ALP activity, as well as promoted cell apoptosis and cell-cycle arrest. FOXO3 was identified as a target gene of miR-29a-3p, and miR-29a-3p can inhibit the expression of FOXO3 and β-catenin, and inhibition of miR-29a-3p promoted translocation of β-catenin to the nucleus. @*Conclusions@#MiR-29a-3p can modulate FOXO3 expression and Wnt/β-catenin signaling to inhibit viability and osteogenic differentiation of hBMSCs, thereby promoting the development of steroid-associated osteonecrosis.

Retrograde transhepatic biliary drainage in surgical treatment of biliary tract stones / 中国现代普通外科进展

Objective: To explore the alternatives for T-tube placement in surgical treatment of bile duct stones.Methods: Fourty-nine patients with bile duct stones have been performed retrograde transhepatic biliary drainages(RTBD)since 1991.Among them,37 cases were placed the drainage tubes through the right hepatic lobes by retrograde punctures;the other 12 cases with intrahepatic stones were placed the drainage tubes through the intrahepatic bile duct stumps following partial hepatectomies.All the CBD exploration incisions were primarily closed.Results: (1)RTBD by retrograde puncture:Two postoperative complications(5.4%,pneumothorax and biliary hemorrhage)occured.Both cases were cured by medical therapy.The drainage tubes were removed on the 8th postoperative day.(2)RTBD through intrahepatic ducts:Four cases had residual stones(30%)which had been cleared up by combination of extraction and intraluminal lithotripsy.Nineteen cases(38.8%)had the gallbladders preserved.Postoperative cholangiographies showed that all the gallbladders were smooth and well-filled and the extrahepatic bile ducts were in normal shapes.Extrahepatic bile ducts and all the preserved gallbladders did not show any deformity and stone formation by ultrasonography during 6 months to 9 years'following-up.Conclusion: RTBD by retrograde puncture has the advantage of shorter period of bearing drainage tubes;RTBD through intrahepatic duct stump after partial hepatectomy makes it easier to extract postoperative residual stones.Both methods have no negative impacts on the anatomies of both the extrahepatic bile duct and the gallbladder.