Integrin is a main factor that mediates adhesive attraction between the cell and the extracellular matrix,and it participates in the formation of new vessel lumens and the construction of the rete vasculosum by regulating endothelial cell adhesion and migration.The extracellular matrix is the ligand of integrin.Collagen and laminin's deposition form new vessel lumens.The vascular endothelial growth factor promotes the proliferation of endothelial cells,accelerates angiogenesis and increases the permeability of blood vessels.This review focuses on the roles and correlation of integrin and VEGF in angiogenesis.

Objective:To explore the influence of radiofrequency ablation (RFA)on P-wave dispersion (difference between maximum and minimum P-wave interval)in patients with paroxysmal atrial fibrillation (PAF).Methods:A total of 95 PAF patients underwent circumferential pulmonary vein isolation.The preoperative and postoperative 12-lead ECG were recorded for 24h,maximum P-wave interval (Pmax)and minimum P-wave interval (Pmin)were measured,and P-wave dispersion was calculated.Since three months after operation,patients received outpatient follow up and dynamic ECG every month for six months.The operation was judged for successful or not according to symptoms of atrial fibrillation and dynamic ECG results,and patients were divided into success group (n=70)and recurrence group (n=25).Results:Compared with before operation,there was significant reduction in P-wave dis-persion [(48.84±4.08)ms vs.(42.22±4.02)ms,P <0.01]in all PAF patients after RFA.Compared with be-fore operation,there was significant reduction in P-wave dispersion [(47.63±3.58)ms vs.(40.67±4.82)ms,P<0.01]in success group;and reduction in P-wave dispersion [(49.51±1.64)ms vs.(48.26±3.48)ms]in recur-rence group,but no significant difference (P =0.346).After circumferential pulmonary vein isolation,P-wave dis-persion in success group was significantly lower than that of recurrence group (P <0.01).Conclusion:Circumferen-tial pulmonary vein ablation can improve P-wave dispersion in patients with atrial fibrillation,and it's more signifi-cant for success group.P-wave dispersion can predict the recurrence of atrial fibrillation after circumferential pulmo-nary vein ablation.

Objective To investigate the changes and effects of intercelluar adhesion molecule-1 (ICAM-1) and inhibitor protein of nuclear factor-?B(I?B?) in pulmonary hemorrhage induced by endotoxin lipopolysaccharide (LPS) in neonatal rats. Methods Sixty-eight seven to ten-day-old Wistar rats were separated into 2 groups randomly. In the experimental groups, LPS was injected intraperitoneally at the dosage of 5 mg/kg and the normal saline (NS) control group was injected with equal amount of NS intraperitoneally. The rats were sacrificed at 30 min, 1, 2, 4, 8, 16 and 24 h post injection. The histology of lung tissues were examined by microscope and electron microscope. The expression of ICAM-1, I?B?protein and mRNA expression were observed using Western blot and in situ hybridization. Results One hour after LPS administration, pulmonary hemorrhage and inflammatory responses were observed in the rat lungs. The ICAM-1 protein expression greatly increased at 2 h post injection and it was significantly higher than control group(178.13?8.18 vs 161.57?12.52, P

Objective According to the clinical imaging for mycoplasma pneumoniae pneumonia,lung CT imaging features of mycoplasma pneumoniae pneumonia were summarized in children.Methods The CT findings and clinical features of 66 patients were retrospectively reviewed(average age was 7 years with 30 males and 36 females) with confirmed pneumoniae pneumonia.The CT images were analyzed by two experienced pulmonologists.Results The most common finding in the mycoplasma pneumoniae pneumonia group was bronchial wall thickening with 69.9％,air bronchogram up 65.1％,over all age groups there was no significant difference;ground-glass-like changes up to15.1％,scattered patchy shadows up to 45.5％,more common in infants; lung consolidation accounted for 48.4％, tree bud accounted for 34.8％,the above results more common in older children.Conclusions Mycoplasma pneumoniae pneumonia HRCT imaging features include:bronchial wall thickening inflatable, the tree bud tree fog sign,ground glass-like changes,scattered patchy shadows,dense coalescent consolidation,and lung CT may improve the early diagnosis of mycoplasma pneumonia.

Every stage of tumor initiation and development closely relates to immune regulation as tumor cells tend to evade attacks from immune system by employing the programmed death 1 (PD-1)/ programmed death-ligand 1 (PD-L1) interaction.Therefore,targeting the PD-1/PD-L1 pathway has become an attractive approach for cancer immunotherapy.Radiotherapy has long been considered a local tumor treatment modality and it is immune-inhibitory.However,accumulated evidence has shown that radiotherapy might enhance immune function by eliminating the tumor mass and has become a systemic tumor treatment modality.These observations indicate a strong rationale that the radiotherapy and anti-PD1 and anti-PD-L1 immunotherapy may work synergistically to provide a powerful anti-tumor effect.This review discusses current progresses,challenges and perspectives of this novel combination treatment modality.

Adult ; Bone Neoplasms ; pathology ; surgery ; Female ; Giant Cell Tumor of Bone ; pathology ; surgery ; Humans ; Patella

Autosomal dominant polycystic kidney disease (ADPKD) is a most common inherited renal disease, about 50% with a family history, although the exact etiology not yet clear. To date, ADPKD, a multisystem disorder without effective preventive and therapeutic means, has been shown to be detrimental to human health. Recent studies show that severe oligoasthenozoospermia, necrospermia, immotile sperm, azoospermia, epididymal cyst, seminal vesicle cyst, and ejaculatory duct cyst found in male ADPKD patients may lead to male infertility, though the specific mechanisms remain unknown. Structural anomaly of spermatozoa, defect of polycystin, mutation of PKD genes, and micro-deletion of the AZF gene could be the reasons for the higher incidence of abnormal semen quality in male ADPKD patients. Assisted reproductive techniques can increase the chances of pregnancy, whereas the health of the offspring should be taken into consideration. This article presents an overview of reproductive issues concerning infertile male ADPKD patients from the perspective of the morbidity, pathophysiological mechanism, diagnosis, and management of the disease.
Cysts ; pathology ; Ejaculatory Ducts ; pathology ; Female ; Humans ; Infertility, Male ; physiopathology ; Kidney ; pathology ; Male ; Mutation ; Polycystic Kidney, Autosomal Dominant ; physiopathology ; Pregnancy ; Reproductive Techniques, Assisted ; Semen Analysis ; Spermatozoa ; pathology

To study the chemical constituents of Asarum himalaicum, fifteen compounds were isolated from a 70% ethanol extract by using a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20, and semi-preparative HPLC. By spectroscopic techniques including 1H NMR, 13C NMR, and HR-ESI-MS, these compounds were identified as 4-demethoxyaristolochic acid BII (1), aristolochic acid I (2), aristolochic acid Ia (3), 7-hydroxyaristolochic acid I (4), aristolochic acid IV (5), aristolic acid II (6), debilic acid (7), aristololactam I (8), 9-hydroxyaristololactam I (9), 7-methoxyaristololactam IV (10), (2S)-narigenin-5, 7-di-O-beta-D-pyranosylglucoside (11), 4-hydroxybenzoic acid (12), 3, 4-dihydroxybenzoic acid (13), 4-hydroxycinnamic acid (14), and beta-sitosterol (15). All of these compounds (1-15) were obtained from A. himalaicum for the first time. Among them, 1 was identified as a new compound, and compounds 3-6, 9, 12-14 were isolated from Asarum genus for the first time. Since the kidney toxicity of aristolochic acids and aristololactams has been reported, the result of this investigation suggests that it should be cautioned to use A. himalaicum as a medicine.

The blood concentrations of the pharmacodynamic substances of traditional Chinese medicines (TCMs) are usually very low. How can they exert pharmacological actions, in which forms (original form, metabolite or the both) do they exert the actions. To answer these questions, we proposed a new concept ofEffective Formsof pharmacodynamic substances of TCMs and a hypothesis of additive effect of multiple constituents of TCMs. The hypothesis includes that the aggregate or summation of Effective Forms of pharmacodynamic substances of TCMs is the core material base of the effi-cacy of TCMs, and the additive effect of the blood concentrations of different Effective Forms is one part of the action mechanism. The additive effect of the different Effective Forms of a TCMs means an additive effect of numerous con-stituents or/and metabolites on a same target, and therefore the efficacy brought by the addition of the concentrations of all these compounds, which different from the synergy effect of multi-constituents on multi-targets. Studies on the disposition of TCMs showed that a constituent can be biotransformed to many metabolites (up to more than 50 metabolites);different constituents can produce the same metabolites;many metabolites (up to 10 compounds for each metabolite) are isomers or homologues; some constituents can be converted to each other in vivo; and some metabolites are bioactive. These com-pounds having the similar structure are likely to have the same pharmacological effects on the same target, which could provide experimental evidences for the concept ofEffective Formsand the hypothesis ofAdditive Effect. We suggest that the Effective Forms and Additive Effects of the pharmacodynamic substances of TCMs should be extensively investi-gated in the future, and the results of such researches will help us further understand the pharmacodynamic substances and action mechanism of TCMs, and give a new explanation 'Toxicities Scattering Effect' for 'Why the toxicities of TCMs are low', and propose a new strategy for quality control of TCMs.

Objective To investigate the role of miR-126 (micro RNA-126) in rat endothelial progenitor cells (EPCs) proliferation and migration and the starget gene of miR-126 by bioinformatics and experimental survey.Method EPCs were transfected with control oligoes and miR-126 mimics or inhibitor by electroporation.MTT was performed to evaluate the growth of EPCs subjecting to miR-126 overexpression.Cell migration analysis was done by wound healing and transwell assay.The target genes of miR-126 were predicted by TargetScan and validated by Western blot.Result (1) miR-126 mimics promoted EPCs growth at 24 h post cell transfection (P ＜ 0.01).In contrast,the EPCs growth was immue from miR-126 application at 48 and 72 h.(2) Both the wound healing and transwell assay show that miR-126 promotes EPCs migration (P ＜ 0.01) and miR-126 inhibitor inhibits EPCs migration (P ＜ 0.01).(3)It is predicted that KANK2 is the potential target gene of miR-126 by TargetScan online software.(4) The results of Western blot indicated that miR-126 mimics repress the expression of KANK2 compared with NC but miR-126 inhibitor enhances KANK2 expression.Conclusions miR-126 has a transient effect on the promotion of EPCc growth.miR-126 promotes EPCs migration and targets KANK2 protein.