Endothelial progenitor cell mediates transport of hepatitis B.

Background: Hepatitis B virus (HBV) replication has been reported to be involved in many extrahepatic viral disorders; however, the mechanism by which HBV is transinfected into extrahepatic tissues such as myocardium and causes HBV associated myocarditis remains largely unknown.

Methods: In this study, endothelial progenitor cells (EPCs) were infected by HBV and then transfused into ischemic model of mice. HBV surface and core antigen as well as mutation of HBV particles were detected by immunohistochemistry, fluorescent activated cell sorter and transmission electron microscopy in vitro and in vivo.

Effects of resveratrol on number and activity of endothelial progenitor cells from human peripheral blood.

1. It has been well established that oestrogens can increase the number of endothelial progenitor cells (EPC) by anti-apoptotic effects. Resveratrol, a polyphenolic phytoalexin extracted from grapes and wine, has been reported to act as an oestrogen receptor agonist.

[Expression of KISS-1 and GnRH in rat hypothalamus].

Objective: To assay the expression of KiSS-1 and GnRH in the male rat hypothalamus at different developmental stages, and to explore the significance of KiSS-1 in sex development onset and normal reproduction regulation.

Methods: Expression analyses of KiSS-1 and GnRH genes were conducted in the rat hypothalamus at different developmental stages with RT-PCR and real time-PCR. The testosterone level was assayed by chemoluminescence technique.

[Analysis of hematopoietic chimerism after non-myeloablative allogeneic peripheral blood stem cell transplantation].

The aim of this study was to analyze the hematopoietic chimerism after non-myeloablative allogeneic peripheral blood stem cell transplantation (NAPBSCT). 28 patients received NAPBSCT were evaluated. The conditioning regimen included FBC (fludarabine, busulphan, cyclophosphamide) +/- Ara-C.

[Expression of P27(Kip1) and its clinical significance in acute and chronic leukemia].

To evaluate the expression of cyclin dependent kinase inhibitor P27(Kip1) in leukemia and to investigate its clinical significance, the P27(Kip1) protein in bone marrow or peripheral blood samples from 82 cases of leukemia was measured by Western blot and enhanced chemoluminescence (ECL). The results showed that the expression of P27(Kip1) protein in ALL was higher than that in ANLL (P = 0.033) and also that in CML (P = 0.