OBJECTIVETo study the protective effects of Shexiang Xingnaonin (SXN) on focal cerebral ischemia/reperfusion injury and its mechanism.

METHODMiddle cerebral artery occlusion (MCAO) was used to make focal cerebral ischemia/reperfusion model by in travascular nylon filament occlusion. The protective effects of SXN at different doses were evaluated by investigating neurological function score, pathomorphology of brain, the ultrastructure of neuron, expression of tumor necrosis factor-alpha, thrombogenesis in vitro, platelet aggregation and lysing effect of blood clot in vitro.

RESULTCompared with model group, SXN (0.08, 0.16 g x kg(-1)) could decrease the neurological score, improve pathomorphology and neuron ultrastructure of brain, inhibit the expression of TNF-alpha, decrease the length, wet weight and dry weight of thromb and inhibit platelet aggregation. And SXN (0.16, 0.32 g x L(-1)) could dissolve blood clot in vitro.

CONCLUSIONSXN has protective effects on focal cerebral ischemia/reperfusion injury. The role of inhibit the expression of TNF-alpha, inhibit thrombogenesis and platelet aggregation might contribute to its neuroprotective effects.

Animals ; Brain ; drug effects ; ultrastructure ; Brain Ischemia ; drug therapy ; genetics ; metabolism ; prevention & control ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; administration & dosage ; Gene Expression ; drug effects ; Humans ; Male ; Platelet Aggregation ; drug effects ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; drug therapy ; genetics ; metabolism ; prevention & control ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

Objective To discuss whether preoperative extracorporeal shock wave lithotripsy (ESWL) could improve the efficacy of percutaneous nephrolithotomy (PCNL) for complicated renal calculi. Methods 160 cases of complicated renal calculi patients were divided into observation group (80) and control group (80) at random. Take conventional PCNL treatment for control group, and ESWL treatment one day before conventional PCNL treatment for observation group. Record the operation time, intraoperative blood loss, postoperative calculi clearance rate, complications, treatment costs, hospital stays of two groups of patients, then compare the curative effects between the two groups. Results Results are very different in the two groups, and the therapeutic effect of observation group is much better than control group (P < 0.05). Conclusions For complicated renal calculi, compared with conventional PCNL, in reducing the residual stone rate shorting the operation time, reducing the operation number, complications, treatment costs and the length of hospital stay, PCNL preoperative ESWL have obvious advantages. It is a kind of both economic and safe and effective treatment method.

OBJECTIVETo study the protective effect of astragaloside IV (AS IV) on H2O2 induced human mesangial cells (HMC), and further explore its molecular mechanism.

METHODThe cultured mesangial cells were divided into 5 groups: the normal control group, the H2O2 model group, the AS IV (12.5, 100 nmol x L(-1)) group and the Tempol (1 x 10(5) nmol x L(-1)) group. The MTT method was used to observe cell viability. Hoechst 33258 staining was used to observe the HMC apoptosis and DHE staining was used to detect the generation of reactive oxygen species (ROS). The flow cytometry was used to detect the changes in cell cycle. Western blot was used to detect the expression of Cyclin D1, CyclinA, p38, and T-p38.

RESULTH2O2 (1 x 10(5), 2 x 10(5), 3 x 10(5), and 4 x 10(5) nmol x L(-1)) could induce HMC oxidative stress injury, with significant decrease in the cell survival rate. AS IV (100 nmol x L(-1)) could significantly inhibit HMC oxidative stress injury induced by H2O2 (3 x 10(5) nmol x L(-1)), increase the survival rate of HMC cells, inhibit cell apoptosis, and decrease intracellular ROS production. AS IV could also increase the expression of Cyclin D1, recover normal cell proliferation, and decrease the expression of p38.

CONCLUSIONAS IV can protect H2O2 induced oxidative stress injury in mesangial cells. Its mechanisms may be related to inhibiting the p38/MAPK signaling pathway, increasing the expression of Cyclin D1 and decreasing the intracellular ROS oxidative stress injury.

Apoptosis ; drug effects ; Cell Cycle ; drug effects ; Cell Line ; Cell Survival ; drug effects ; Cyclin A ; metabolism ; Cyclin D1 ; metabolism ; Dose-Response Relationship, Drug ; Gene Expression Regulation ; drug effects ; Humans ; Hydrogen Peroxide ; pharmacology ; Mesangial Cells ; cytology ; drug effects ; metabolism ; Oxidative Stress ; drug effects ; Reactive Oxygen Species ; metabolism ; Saponins ; pharmacology ; Triterpenes ; pharmacology

Objective To evaluate the effects of various polysorbates(PS)on the stability of different types of monoclonal antibody(mAb)drugs.Methods Three types of monoclonal antibodies mAbA(IgG1 proantibody drug),mAbB(IgG1 mAb)and mAbC(IgG1 mAb with Fc N297A mutation)were used as model proteins,and different kinds or contents of PS were added into the mAb formulations respectively to investigate the influencing factors.The effects of PS on the stability of mAb drugs were evaluated comprehensively by detecting the changes of quality attributes,such as protein aggregates and insoluble particles.Results PS20 and PS80 showed no significant difference in inhibiting the formation of aggregates and charge variants in the three mAbs(P>0.05),while the addition of PS80 in mAbB and PS20 in mAbC significantly inhibited the increase of insoluble particles respectively(P<0.05);The content of PS20 showed a significant effect on the detection indexes of charge variants and insoluble particles in mAbC(P<0.05).Conclusion Different types of mAbs have different sensitivities to various kinds and contents of PS.Therefore,when designing the formulation of mAbs,it is necessary to select appropriate kinds and contents of PS to further improve the stability of mAb drugs.

OBJECTIVETo study the biomechanical characteristics of Ni-Ti shape-memory alloy-enclosed interlocking intramedular nail Ni-Ti En for clinical application.

METHODSSix transverse fractures were induced in 6 fresh humeral shafts and fixed with Ni-Ti En, plate, interlocking intramedullary nail, and Ender nail, respectively. The specimens then underwent stress analysis for comparison of the bending strength, twisting force, and flexibility.

RESULTSThe bending strength of Ni-Ti En was not significantly different from that of the plate and better than ender's nail; the twisting force of the interlocking intramedullary nail was comparable with the plate, but better than Ender nail.

CONCLUSIONNi-Ti Enpossess good biomechanical property to meet the demand of osteosynthesis, and its less stress protection, freedom of distant nail locking, flexibility and stable fixation may accelerate fracture healing.

Biomechanical Phenomena ; Bone Nails ; Fracture Fixation, Intramedullary ; instrumentation ; methods ; Humans ; Humeral Fractures ; physiopathology ; surgery ; Nickel ; Titanium

OBJECTIVETo investigate the gene differential expression patterns in hepatocirrhosis and non-hepatocirrhosis tissues within different ischemic time.

METHODSThe liver tissues were divided into two groups: Group A (non-hepatocirrhosis), Group B (hepatocirrhosis), each of which consisted of 3 groups with different ischemic time: 15, 30 and 45 minutes. The gene differential expression patterns in the two groups within different ischemic time were detected and compared with those in normal liver tissues by using 4000 points gene microarray.

RESULTSIn non-hepatocirrhosis tissues, the homeostatic maintenance genes expressed highly during hepatic ischemia for 15 minutes, and no apoptotic gene was expressed; but in hepatocirrhosis tissues, many apoptotic genes expressed highly. As for 30 minutes, in both two groups liver tissue genes expressed to the peak, and the genes related to cell death, oxidative stress and nuclear factors expressed highly. The difference lies in the facts that in Group B pro-apoptosis genes expressed more than those in Group A, and the Ratio values were higher than those in Group A. Many genes of heat shock protein family and antioxidant proteins expressed highly simultaneously in Group A, but comparatively low in Group B. As for 45 minutes, genes of heat shock proteins and antioxidant proteins expressed lowly in Group B.

CONCLUSIONSIt suggests that the safe time limit of hepatic ischemia for cell survive is 30 minutes or so. Non-hepatocirrhosis tissues could endure 30 minutes of ischemia and even longer, but it should be restricted within 30 minutes in hepatocirrhosis tissues.

Gene Expression Profiling ; Humans ; Ischemia ; genetics ; Liver ; blood supply ; metabolism ; Liver Cirrhosis ; genetics ; pathology ; Oligonucleotide Array Sequence Analysis ; methods ; Time Factors

OBJECTIVETo investigate the value of the Tinnitus Evaluation Questionnaire (TEQ) in clinical application.

METHODSCronbach's α coefficient was used to examine the reliability of the TEQ internal consistency. Examined the re-measured reliability by the correlation coefficient by two doctors' 1 - 3 hours interval questionnaires' scores. And inspected criteria validity according to the correlation coefficient of the TEQ and Tinnitus Handicap Inventory (THI).

RESULTSIn the 202 tinnitus patients, the TEQ Cronbach's α coefficient was 0.76 and re-measured reliability was 0.938. The THI correlation coefficient was 0.769. Among which, 99 patients feel tinnitus alleviated obviously after the treatment, the TEQ scores were significantly lower than that before the treatment (t = 21.42, P < 0.001).

CONCLUSIONSThe TEQ reflects the severity of tinnitus completely, and has preferable reliability and validity. The characteristics are concise, practical and exact. It is worthy of clinical application.

Adolescent ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Reproducibility of Results ; Surveys and Questionnaires ; Tinnitus ; diagnosis ; Young Adult

Objective:The evidence-based and Delphi methods were used to construct the exercise program for hospitalized patients with diabetes foot to provide guidance for clinical practice.Methods:Evidence on exercise management of diabetic foot patients was systematically searched from BMJ Best Practice, UpToDate, Registered Nurses′ Association of Ontario and other domestic and foreign databases and professional association websites. The retrieval period was from the establishment of the database to April 2021. The quality of the included literature was independently evaluated, and the evidence of the literature meeting the quality standards was extracted and summarized to form the first draft of exercise program for inpatients with diabetic foot. After two rounds of Delphi expert letter consultation, the program items were revised, and the final draft of the exercise program for inpatients with diabetic foot suitable for clinical practice was formed.Results:The effective recovery rate of the two rounds of expert correspondence questionnaire both were15/15. The expert authority coefficient was 0.865 and 0.895 respectively. And the Kendall coordination coefficient was 0.232 and 0.291 (both P<0.01). An exercise program for inpatients with diabetic foot had been formed, including 5 modules(exercise evaluation, exercise prescription, exercise monitoring, post-exercise evaluation and exercise management), 12 items and 40 operational items. Conclusions:The exercise program for inpatients with diabetic foot constructed in this study is scientific and clinically applicable, which provide scientific guidance for clinical medical staff to carry out exercise practice.

OBJECTIVETo analyze the high risk factors for tumor recurrence in short term after hepatectomy for the patients with primary hepatocellular carcinoma (HCC).

METHODSFive hundreds and two patients with primary HCC underwent hepatectomy were included from January 1997 to December 2008. Among these patients, males were 419 cases and females were 83 cases. The age was 14 to 82 years (average age 54 years). The results of evaluation on 2 months after resection and tumor recurrence and survival were analyzed.

RESULTSAccording to the operative and pathologic findings and the evaluation on 2 months after hepatectomy, the patients with vascular invasion, palliation resection, cutting edge pathologic residual tumor, lymph notes metastasis, serum AFP level continuing higher after resection or(and) positive TACE (tumor dyeing on TACE within 1 month and a deposit of lipiodol on CT scan) were high risk factors (high-risk group, 106 cases, 21.1%), the recurrence-free survival was 22%, 9% and 3% (1, 2 and 5 year) and overall survival was 52%, 25% and 8%. On the non-high risk group patients, the recurrence-free survival was 84%, 67%, 42% and 31% (1, 2, and 5 year) and overall survival was 97%, 85%, 56% and 35%. The bigger tumor, poor differentiation, tumor invading to liver capsule, satellite focus and TNM III-IV stage in high-risk groups were more significantly than that in non-high-risk groups.

CONCLUSIONThe vascular invasion, palliation resection, cutting edge pathologic residual tumor, lymph notes metastasis, serum AFP level continuing higher or (and) positive TACE within 2 months after resection are high risk factors for HCC patients in short term after hepatectomy, which mean tumor remnant.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Carcinoma, Hepatocellular ; mortality ; pathology ; surgery ; Disease-Free Survival ; Female ; Hepatectomy ; Humans ; Liver Neoplasms ; mortality ; pathology ; surgery ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; mortality ; pathology ; Prognosis ; Retrospective Studies ; Risk Factors ; Young Adult

OBJECTIVETo study the effect of ABT-737 combined with cisplatin on apoptosis of breast cancer cell line T47D cells.

METHODST47D cells cultured in vitro was used for this experiment. Cell proliferation was measured by MTT assay. The expression of apoptosis-related protein was determined by Western blot. Morphological changes of apoptotic cells were observed by fluorescence microscopy. The apoptosis rate was examined by flow cytometry.

RESULTSThe MTT assay showed that ABT-737 significantly decreased the IC(50) of cisplatin in T47D cells [(26.00 ± 1.41) µmol/L of single cisplatin vs. (13.00 ± 1.11) µmol/L of combination (ABT-737 + cisplatin)]. As a single agent, ABT-737 did not inhibit the proliferation of T47D cells, but enhanced the inhibitory effect of cisplatin in a dose-dependent manner. The detection of the cleavage of PARP showed that ABT-737 lowered the doses of cisplatin to induce apoptosis and shortened the induction time of apoptosis in T47D cells. Compared with the single use of cisplatin, the combination of ABT-737 and cisplatin accelerated the cleavage of PARP and caspase3, but did not alter the expression levels of Bcl-2, Bcl-X(L), and Bax. Both flow cytometry and fluorescence microscopy showed that ABT-737 combined with cisplatin significantly increased the apoptosis induction in T47D cells (2.3% ± 0.1 % in the control, 30.0% ± 0.8% in the cisplatin alone, and 49.0% ± 0.5% in the cisplatin + ABT-737 groups, P < 0.05).

CONCLUSIONThe Bcl-2 inhibitor ABT-737 can significantly enhance cisplatin-induced apoptosis in human breast cancer T47D cells in vitro.

Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Biphenyl Compounds ; administration & dosage ; pharmacology ; Breast Neoplasms ; metabolism ; pathology ; Caspase 3 ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cisplatin ; pharmacology ; Dose-Response Relationship, Drug ; Drug Synergism ; Female ; Humans ; Nitrophenols ; administration & dosage ; pharmacology ; Piperazines ; administration & dosage ; pharmacology ; Poly(ADP-ribose) Polymerases ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; antagonists & inhibitors ; metabolism ; Sulfonamides ; administration & dosage ; pharmacology ; bcl-2-Associated X Protein ; metabolism ; bcl-X Protein ; metabolism