OBJECTIVETo objectively evaluate the clinical efficacy, safety and technical operating standard of percutem clamp fixation (PCCF), an operation designed by imitating bone setting method of TCM, in treating unstable tibiofibular fracture (UTF).

METHODSA prospective controlled multicentre clinical study was carried out on 200 patients with UTF, they were assigned to the treated group (99 cases) treated with PCCF and the control group (101 cases) treated with unilateral multifunctional external fixator (UMFEF).

RESULTSPCCF showed better effects than UMFEF in reducing the time of fixing operation and healing time; and the immediate effect after removing the fixating apparatus and long-term efficacy as well as safety in the treated group were also superior to those in the control group (P < 0.01).

CONCLUSIONIt is convenient, safe and effective to treat UTF by fixation with percutem clamp.

Adolescent ; Adult ; Female ; Fibula ; injuries ; Fracture Fixation ; methods ; Fractures, Bone ; therapy ; Humans ; Male ; Middle Aged ; Multiple Trauma ; therapy ; Prospective Studies ; Tibial Fractures ; therapy ; Treatment Outcome

Bacterial biofilm refers to a tunicate-like biological group composed of polysaccharide, protein and nucleic acid secreted by bacteria on the surface of the mucous membrane or biological material. The biofilm formation is a major cause of chronic infections. Bacteria could produce some secondary metabolites during the growth and reproduction. Some of them act as signaling molecules allowing bacteria to communicate and regulate many important physiological behaviors at multiple-cell level, such as bioluminescence, biofilm formation, motility and lifestyles. Usually, these signal molecules play an important role in the formation of bacterial biofilm. We review here the effects of related signal molecules of Quorum Sensing, cyclic diguanylate, Two-Component Systems and sRNA on the biofilm formation. Focusing on these regulation mechanism of signal molecules in the process of biofilm formation is necessary for the prevention and treatment of some chronic diseases.
Bacterial Proteins ; Biofilms ; Cyclic GMP ; Gene Expression Regulation, Bacterial ; Protein Binding ; Quorum Sensing

Adult ; Female ; Femoral Fractures ; surgery ; Femur Neck ; injuries ; surgery ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Young Adult

OBJECTIVETo construct a lentiviral-vector-mediated CyPA small interference RNA (siRNA) and study its function in non-small cell lung cancer.

METHODSFirst, four target sequences were selected according to CyPA mRNA sequence, the complementary DNA contained both sense and antisense oligonucleotides were designed, synthesized and cloned into the pGCL-GFP vector, which contained U6 promoter and green fluorescent protein (GFP). The resulting lentiviral vector containing CyPA shRNA was named Lv-shCyPA, and it was confirmed by PCR and sequencing. Next, it was cotransfected by Lipofectamine 2000 along with pHelper1.0 and pHelper 2.0 into 293T cells to package lentivirus particles. At the same time, the packed virus infected non-small cell lung cancer cell (A549), the level of CyPA protein at 5 d after infection was detected by Western Blot to screen the target of CyPA. A549 were infected with Lv-shCyPA and grown as xenografts in severe combined immunodeficient mice. Cell cycle and apoptosis were measured by FCM.

RESULTSIt was confirmed by PCR and DNA sequencing that lentiviral-vector-mediated CyPA siRNA (Lv-shCyPA) producing CyPA shRNA was constructed successfully. The titer of concentrated virus were 1 x 10(7) TU/ml. Flow cytometric analysis demonstrated G2-M phase (11.40% +/- 0.68%) was decreased relatively in A549/LvshCyPA compared with control groups (14.52% +/- 1.19%) (P<0.05). The apoptosis rate of A549/Lv-shCyPA (5.01% +/- 0.5%) was higher than control groups (0.35% +/- 0.17%) (P<0.05). Visible tumors were only detectable at 6th day after inoculated by A549/Lv-shCyPA. The xenograft tumors of A549/Lv-shCyPA remarkably delayed tumor growth and remained at a similarly small average size at 38th days after inoculation compared with the control group (P < 0.05).

CONCLUSIONLentiviral-vector-mediated siRNA technique effectively inhibits the expression of CyPA, induces the NSCLC cell apoptosis, inhibits the tumor growth. Elucidation of the precise role of CypA in these pathways may lead to new targeted therapies for non-small cell lung cancer.

Animals ; Carcinoma, Non-Small-Cell Lung ; genetics ; Cell Line, Tumor ; Cyclophilin A ; genetics ; Gene Silencing ; Genetic Vectors ; Humans ; Lentivirus ; genetics ; Lung Neoplasms ; genetics ; Mice ; RNA, Small Interfering

Objective To investigate the effects of a multidisciplinary round electronic checklist in ICU. Methods From October 2016 to September 2017,a total of 1 172 patients were provided with a multidisciplinary round electronic checklist. Another 886 patients with routine rounds between October 2015 to September 2016 were retrospectively analyzed. The duration of mechanical ventilation and ICU stay,the rate of nosocomial infection, the percentages of catheter days(central line catheter days,artificial airway days and urinary catheter days) and clinical staffs' satisfaction with the multidisciplinary collaboration were compared. Results The duration of mechanical ventilation and ICU stay in the intervention group were 1.42(0.68,3.63)days and 3.19(2.48,5.40)days respectively,in the control group were 2.16(1.40, 4.77) days and 4.14(3.46, 6.92) days respectively. The differences between two groups were statistically significant(t=2.084, 2.247, P <0.05). The application of a multidisciplinary round electronic checklist shortened the duration of mechanical ventilation and ICU stay. The percentages of catheter days and the rate of catheter-associated urinary tract infection were 0(0/6 269),60.34%(6 269/10 389)respectively,in the control group were 0.93‰(6/6 485),67.02%(6 485/9 676)respectively.The differences between two groups were statistically significant(χ2=96.187,Fisher's exact test=0.031,P<0.05).Besides,the level of multidisciplinary collaboration in ICU was greatly improved in the intervention group, 3.03 ± 0.11 vs. 4.13 ± 0.39 (t=24.587, P < 0.05). Conclusions A multidisciplinary round electronic checklist in ICU can improve the care quality and multidisciplinary collaboration.

This study aimed to investigate the effect of serum containing ginseng and Moutan Cortex on human umbilical vein endothelial cells(HUVEC) injured with hydrogen peroxide(H_2O_2). HUVEC injured with H_2O_2 were divided into 6 groups, namely blank group, model group, ginsenoside(TGG) group, total glucosides of Moutan Cortex(TGM) group, paeonol(P) group and TGG+TGM+P group. After 24 hours of co-culture with H_2O_2, the activities of succinate dehydrogenase(SDH) and Ca~(2+)-Mg~(2+)-ATP were detected by microenzyme labeling. The apoptosis rate, intracellular Ca~(2+) concentration, reactive oxygen species(ROS) and mitochondrial membrane potential(JC-1) were detected by flow cytometry. The expressions of mitochondrial apoptosis pathway-related proteins Bax, Bcl-2, cytochrome C, caspase-3 and caspase-9 were detected by Western blot. The results showed that H_2O_2 could significantly damage HUVEC, decrease the activity of SDH and Ca~(2+)-Mg~(2+)-ATP(P<0.01), while could increase the apoptosis+necrosis rate, JC-1 decline rate, ROS increase rate and Ca~(2+) concentration increase rate(P<0.01). Serum containing ginseng and Moutan Cortex could increase the activities of SDH and Ca~(2+)-Mg~(2+)-ATP to different degrees, decrease the apoptosis+necrosis rate, JC-1 decline rate, ROS increase rate and Ca~(2+) concentration increase rate(P<0.05 or P<0.01), and down-regulate the protein expressions of Bax, caspase-3, caspase-9, cytochrome C, and up-regulate the protein expression of Bcl-2. The results showed that serum containing ginseng and Moutan Cortex has a protective effect on vascular endothelial cell injury induced by ROS, and its mechanism may be related to the improvement of mitochondrial function and the inhibition of the activation of mitochondrial apoptosis pathway.
Apoptosis ; Drugs, Chinese Herbal/pharmacology* ; Human Umbilical Vein Endothelial Cells ; Humans ; Paeonia ; Panax ; Reactive Oxygen Species