Antheraea pernyi nucleopolyhedrovirus (ApNPV) PstI-B and C fragments were cloned and sequenced. ApNPV PstI-B was 7406 bp long, contained seven open reading frames (orfs)/genes, including p87, he65, pnk/pnl, odv-ec43 and Orgyia pseudotsugata multicapsid nucleopolyhedrovirus (OpMNPV) orf107,orf108 homologue on either strands of genomic DNA. ApNPV PstI-C was 6663 bp long, contained eleven orfs/genes, including pk-1, orf1629, polh, lef-2, ptp-2, ctl-1, ptp-1 and OpMNPV orf5, orf7, orf8, orf1 1 homologue on either strands of genomic DNA. Among the eighteen baculovirus genes identification, he65 and orf1629 were two diverse genes, while polh and lef-2 were two conserved genes. ApNPV was the third baculovirus found to contain pnk/pnl gene, the fourth baculovirus found to contain both ptp-1 and ptp-2 gene.

The present paper is to research the expression level of the mRNA of scavenger receptor class B type 1-receptor of high-density lipoprotein in endothelial cells after being treated by different shear stress. The second to fourth generations of the cultured human umbilical vein endothelial cells (HUVECs) were used in the experiment. The cells were divided into two groups. The first group was the control group which was not dealt with shear stress; the second group was the experimental group which concluded low shear stress group (4.2 dyne/cm2), moderate shear stress group (8.4 dyne/cm2) and high shear stress group (15 dyne/cm2). The load time was 1h, 2h, 4h and 8h, respectively. Harvesting the cells and extracting total RNA after being treated by different shear stresses, the expression level of the SR-B1 mRNA was detected by semi-quantitative RT-PCR technic. It was found that the expression of SR-B1 mRNA became weaker and weaker compared to the control group when it was stimulated continuously by the low shear stress, the lowest expression of SR-B1 mRNA appeared at 8h. In the moderate shear stress group, the expression of SR-B1 mRNA increased obviously. Compared to the control group, there was significant difference after being treated with 2h. In the high shear stress group, the expression of SR-B1 mRNA increased immediately when it was stimulated by the shear stress. And the expression of SR-B1 mRNA arrived peak value at 4h. Compared to the control group, there was significant difference after being treated for 1h. It was concluded that the harmful mechanism of the low shear stress is that it can increase the incidence of the atherosclerosis by reducing the reverse cholesterol transport and endothelial protection through decreasing the expression of the SR-B1. Otherwise, the high shear stress prevent the genesis of atherosclerosis by the contrary mechanism.
Atherosclerosis ; etiology ; Cells, Cultured ; Human Umbilical Vein Endothelial Cells ; cytology ; metabolism ; Humans ; RNA, Messenger ; genetics ; metabolism ; Scavenger Receptors, Class B ; genetics ; metabolism ; Stress, Mechanical

Objective    To assess the early outcome of transapical transcatheter aortic valve replacement (TAVR) for patients with aortic insufficiency. Methods    The patients with aortic valvular disease who underwent transapical TAVR from October 2020 to October 2022 in the Department of Cardiac and Vascular Surgery, the First Affiliated Hospital of Anhui Medical University were enrolled in the current retrospective study. The patients with aortic stenosis were assembled in a group A, and the patients with aortic insufficiency were assembled in a group B. The improvements of heart function and complications were assessed for the two groups. Results    A total of 56 patients were enrolled, including 32 males and 24 females with an average age of 73.34±5.10 years. There were 31 patients in the group A and 25 patients in the group B. There was no statistical difference between the two groups in the age, gender, height, weight, hypertension, coronary artery disease, peripheral vascular disease, chronic obstructive pulmonary disease, renal disorder or classification of heart function (P>0.05). Also, there was still no statistical difference in the rate of permanent peacemaker implants, emergent open surgery, valve re-implants, or perivalvular leakage (P>0.05). After TAVR, the left ventricular diastolic diameter, left ventricular ejection fraction, complicated moderated mitral and tricuspid regurgitation were significantly improved in both groups compared with preoperative findings (P<0.05); however, there was no statistical difference in these parameters between groups (P>0.05). Conclusion    Interventional valve (J-Valve) in the treatment of patients with aortic insufficiency through transapical TAVR significantly improves cardiac function and reduces functional valve regurgitation.