Liaoning University of Traditional Chinese Medicine

About: Liaoning University of Traditional Chinese Medicine is a education organization based out in Shenyang, China. It is known for research contribution in the topics: Randomized controlled trial & Acupuncture. The organization has 2040 authors who have published 1326 publications receiving 14664 citations.

Disruption of disulfide restriction at integrin knees induces activation and ligand-independent signaling of α4β7

Abstract: Control of integrin activation and signaling plays crucial roles in cell adhesion, spreading and migration. Here, we report that selective breakage of two conserved disulfide bonds located at the knees of integrin alpha(4)C589-C594 and beta(7)C494-C526 activated alpha(4)beta(7). This activated integrin had a unique structure that was different from the typical extended conformation of active integrin. In addition, these activated alpha(4)beta(7) integrins spontaneously clustered on the cell membrane and triggered integrin downstream signaling independent of ligand binding. Although these disulfide bonds were not broken during alpha(4)beta(7) activation by inside-out signaling or Mn2+, they could be specifically reduced by 0.1 mM dithiothreitol, a reducing strength that could be produced in vivo under certain conditions. Our findings reveal a novel mechanism of integrin activation under specific reducing conditions by which integrin can signal and promote cell spreading in the absence of ligand.

Repair calvarial defect of osteoporotic rats by berberine functionalized porous calcium phosphate scaffold.

Abstract: In this article, we propose a simple scheme of using berberine (BBR) to modify porous calcium phosphate ceramics (named PCPC). These BBR molecules regulate the crystallization of hydroxyapatite nanorods on PCPC. We found that these nanorods and the adsorbed BBR changed the interface micro-environment of PCPC by SEM images. The microenvironment of PCPC surface is essential for promoting BMSCs' proliferation and differentiation. These results demonstrated that PCPC/BBR markedly improved the bone regeneration of osteoporosis rats. Moreover, PCPC/BBR had significantly increased the expression levels of ALP, osteocalcin and bone morphogenetic protein2 and RUNX2 in BMSCs originated from osteoporosis rats.

Effect of polymorphisms in CYP3A4, PPARA, NR1I2, NFKB1, ABCG2 and SLCO1B1 on the pharmacokinetics of lovastatin in healthy Chinese volunteers.

Abstract: Aim: This study examined whether gene polymorphisms (CYP3A4, ABCG2, SLCO1B1, NR1I2, PPARA and NFKB1) influenced the pharmacokinetics of lovastatin in Chinese healthy subjects. Patients & method: Plasma concentrations of lovastatin and lovastatin acid were quantified using LC/MS/MS. Results: PPARA c.208+3819 G allele carriers had approximately twofold higher AUC0-∞ and Cmax of lovastatin than wild-type (PPARA c.208+3819 AA) subjects. After adjustment for the PPARA variants, subjects with the SLCO1B1 521TT genotype had approximately 50% lower AUC0-∞ of lovastatin acid than those with 521TC/CC genotypes, while the AUC0-∞ of lovastatin lactone in NFKB1-94 DD wild-type carriers was twofold higher than in mutant homozygotes carriers. Conclusion: Gene polymorphisms of PPARA, SLCO1B1 and NFKB1 affected the pharmacokinetics of lovastatin.