BACKGROUND:Bipolar femoral head prosthesis has achieved the desired repair effect in patients with femoral neck fracture, but there is stil much controversy on the biomechanical properties of bipolar artificial femoral head prosthesis. OBJECTIVE:To compare biomechanical properties of the bipolar femoral head prosthesis replacement and internal fixation in the repair of femoral neck fracture in the elderly. METHODS:Twenty-three (46 sides) senile femoral neck fracture specimens were analyzed and randomized into internal fixation group(n=23)and bipolar femoral head prosthesis replacement group (n=23). Specimens in the internal fixation group underwent conventional metal implant fixation. Specimens in the bipolar femoral head prosthesis replacement group underwent bipolar femoral head prosthesis replacement. Mechanical properties of femoral prosthesis stem were tested on universal testing machine. Biomechanical properties after bipolar femoral head prosthesis replacement and internal fixation were compared. RESULTS AND CONCLUSION:(1) The maximum loadwassignificantly higher in the bipolar femoral head prosthesis replacement group than in the internal fixation group (P< 0.05). The maximum load trend images showed that the maximum load was significantly higher in the bipolar femoral head prosthesis replacement group than in the internal fixation group (P< 0.05). (2) The displacement in axial pul test was significantly shorter in the bipolar femoral head prosthesis replacement group than in theinternal fixation group (P< 0.05). The displacement trend images exhibited that the displacement in axial pul test was significantly shorter in the bipolar femoral head prosthesis replacement group than in the internal fixation group (P< 0.05). (3) These findings suggest that compared with the implant, bipolar femoral head prosthesis replacement in the repair of femoral neck fracture in the elderly is more stable, has better repair effects, can elevate hip function and obtain good initial stability.

OBJECTIVE:To investigate the effects and safety of rosuvastatin on blood lipid and thyroid nodules in elderly pa-tients with dyslipidemia. METHODS:70 elderly patients with dyslipidemia were selected and randomly divided into control group (33 cases) and treatment group (37 cases). Control group was treated with routine treatment as abstain from tobacco and drink, low fat diet,Aspirin enteric-coated tablets 100 mg at bed time;treatment group was additionally treated with Rosuvastatin calcium tablet 10 mg at bed time,on the basis of control group. Both groups received the treatment for consecutive 12 weeks. BMI,blood lipid and the size of thyroid nodules were compared between 2 groups before and after treatment,and the occurrence of ADR was also observed. RESULTS:There was no significant difference in BMI between 2 groups before and after treatment (P>0.05). There was no significant difference in blood lipid level and the size of thyroid nodules between 2 groups before and after treatment (P>0.05). The blood lipid level and the size of thyroid nodule of 2 groups were improved significantly after treatment,and the treatment group was significantly better than the control group,with statistical significance(P<0.05). 2 pationts of creatment suf-fered from the increase of ALT but recovered withont angtreatment. CONCLUSIONS:Rosuvastatin can significantly improve blood lipid and decrease thyroid nodules in elderly patients with dyslipidemia with good safety.

Objective To assess the relationship between serum uric acid (SUA)and metabolic syndrome and coronary artery disease(CAD).Methods 232 untreated subjects with essential hypertension were divided into two groups(CAD and no CAD)by coronary angiography.All subjects were free of myocardial infarction,cardiomyopathy,valvular disease, atrial fibrillation,aortic dissection,and renal disease.Results Compared to no CAD group,age,diabetes,triglycerides and SUA in CAD group were higher.There was a significant association between SUA and the severity of CAD (P=0. 015).However,after adjustment for concomitant risk factors of cardiovascular disease,SUA was not an independent risk factor of CAD(P=0.151).In sex-specific analysis,there was a trend of SUA to be an independent risk factor of CAD in women(P=0.062),but it was no statistic significance.The highest quartile level of $UA tended to be associated with increased risk for CAD,but it was not statistically significant either(OR=2.52,P=0.075).SUA was closely associated with metabolic syndrome and diabetes in woman.Conclusion In untreated patients with essential hyperteusion,SUA was associated with metabolic syndrome and the severity of CAD,but it is not an independent risk factor of CAD,the raised SUA may be only a marker of insulin resistance.

OBJECTIVETo evaluate the efficacy and safety of the combination therapy of Xipayimaizipizi Capsules and Tamsulo- sin in the treatment of benign prostatic hyperplasia (BPH).

METHODSWe randomly assigned 60 BPH patients to a control and a combination group of equal number, the former aged 62.03 ± 10.19 years with a disease course of 3.24 ± 2.18 years and the latter aged 64.77 ± 10.33 years with a disease course of 4.09 ± 2.63 years. We treated the patients in the control group with Tamsulosin at 0.2 mg qd and those in the combination group with Tamsulosin at 0.2 mg qd plus Xipayimaizipizi at 0.5 g tid, respectively, both for 4 weeks. Then, we obtained the mean frequency of nocturnal urination, maximal urinary flow rate (Qmax), residual urine volume, International Prostate Symptom Score (IPSS) , and quality of life scores (QOL) of the patients, and recorded their adverse reactions.

RESULTSBefore treatment, the nocturnal urination frequency, Qmax, IPSS, and QOL were 3.60 ± 1.81, (10.40 ± 3.53) ml/min, 22.47 ± 8.58, and 4.43 ± 1.50 in the control group, as compared with 3.43 ± 1.61, (10.14 ± 3.43) ml/min, 21.93 ± 8.79, and 4.73 ± 1.31 in the combination group. After 4 weeks of medication, the combination group showed more significant improvement than the control in the nocturnal urination frequency (1.30 ± 1.18 vs 2.27 ± 1.60), Qmax ([13.85 ± 3.15] vs [14.36 ± 3.03] ml/min), IPSS (13.00 ± 1.53 vs 17.20 ± 8.43), and QOL (2.57 ± 1.61 vs 2.93 ± 1.68), all significantly better than the baseline (P < 0.05). The combination therapy achieved remarkable improvement as compared with the control in the nocturnal urination frequency (- [2.13 ± 1.11] vs -[1.73 ± 1.07]), IPSS (- [8.93 ?6.01] vs -[4.80 ± 3.87]), and QOL (- [2.17 ± 1.12] vs -[1.50 ± 1.01]) (P < 0.05), but exhibited no significant differences from the latter in Qmax ([3.72 ± 2.281 vs [3.95 ± 2.53] ml/min) and residual urine volume (- [34.30 ± 37.43] vs - [26.43 ± 30.49] ml) (P > 0.05). Adverse reactions were found in 5 cases in the combination group (16.67%) and 3 cases in the control (10%) , with no remarkable differences between the two groups (P > 0.05).

CONCLUSIONThe combination therapy of Xipayimaizipizi Capsules and Tamsulosin can improve the symptoms of BPH and the patients quality of life of.

Aged ; Capsules ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Male ; Middle Aged ; Prostatic Hyperplasia ; drug therapy ; Quality of Life ; Sulfonamides ; therapeutic use

AIM:To study the coating technique of pH-time lap colon-specific matrine delivery mini-pill consisted of the time lag release coating (inner layer) and enteric coating (out layer). METHODS:To filter the coating composition based on the index of dissolution of matrine and oxymatrine in vitro and the appearance rating of miui-pill. RESULTS:4 The coating composition of inner layer was the alcoholic solution,consisted of 2% EC,0.4% DEP and 2% talc powder. Then the coating composition of out layer was the alcoholic solution consisted of 5% Eudragit S100,3% talc powder and 0.5% TEC. The dissolution tests in vitro indicated that matrine and oxymatrine were not dissolved in the simulated gastric juice in 2 h. The accumulative amount of matrine and oxymatrine were less than 15% in the simulated intestinal fluid in 4 h. The amount of matrine and oxymatrine were 80.7% and 83.5% in the simulated colon juice in 2 h. CONCLUSION:The mini-pill could achieve the goal of delivering in the specific colon.

Objective:To explore the expression of caveolin-1 (Cav-1) and Chitinase-40 (YKL-40) in acute cerebral infarction and the value of combined detection in prognosis evaluation.Methods:118 patients with acute cerebral infarction admitted to the First Affiliated Hospital of Hebei Northern University from January 2016 to June 2019 were selected as the research objects. According to the cerebral infarction volume, the patients were divided into small infarction group (<5 cm 3), middle infarction group (5-10 cm 3) and large infarction group (>10 cm 3). 108 healthy people were selected as the healthy control group. The serum levels of Cav-1 and YKL-40 were compared in the 3 groups, and the correlation between the degree of cerebral infarction and serum levels of Cav-1 and YKL-40 was analyzed. Receiver operating characteristic curve (ROC) was used to analyze the diagnostic value of the expression levels of Cav-1 and YKL-40 in patients with acute cerebral infarction; the patients were followed up for one year and the prognosis was evaluated by modified Rankin Scale (mRS); the correlation between serum Cav-1 and YKL-40 and prognosis was analyzed. Results:The expression levels of serum Cav-1 and YKL-40 in patients with acute cerebral infarction were significantly higher than those in healthy group ( P<0.001). The serum levels of Cav-1 and YKL-40 were positively correlated with the infarct volume of acute cerebral infarction ( r=0.854, P=0.004; r=0.867, P=0.002). ROC curve analysis showed that the sensitivity, Youden index and area under ROC curve of Cav-1 (21.78 μg/L) combined with YKL-40 (158.69 ng/ml) in the diagnosis of acute cerebral infarction were 85.59%, 0.532 and 0.896 (95% CI: 0.741-0.932), respectively, which were significantly higher than those of single index ( P<0.05). At 8 and 12 months of follow-up, the proportion of death and mRS score in the positive group were significantly higher than those in the negative group ( P<0.05). Conclusions:The serum Cav-1 and YKL-40 levels are significantly higher in patients with acute cerebral infarction. The combined examination of Cav-1 and YKL-40 can improve the diagnostic efficiency and has potential application value for early diagnosis and prognosis prediction of patients.

Objective To investigate the clinical value of color Doppler flow imaging (CDFI) for evaluating transplant renal artery stenosis (TRAS).Methods Clinical and ultrasonographic data of 216 kidney transplant recipients were collected by follow-up monitoring from September 2015 to July 2016.CDFI indexes included the peak systolic velocity (PSV) in the renal artery and resistant index (RI).Renal artery PSV and RI were measured.All suspected TRAS patients accepted transplant renal artery angiography (DSA).Results Fourteen patients with suspected TRAS accepted DSA,of which 12 patients were confirmed.The diagnostic accuracy of CDFI was 85.7％.When the POST-PSV ratio＞ 1 0,the sensitivity and specificity of diagnosis of TRAS were 91 ％ and 95 ％,respectively.CDFI indexes remarkably changed after the TRAS patients had undergone renal artery dilatation or stent implantation.PSV of the main renal artery and the POST-PSV ratio decreased significantly,and the PSV of interlobar arteries increased.Conclusions CDFI is a reliable first choice for screening transplant renal artery stenosis.The POST-PSV ratio has relatively higher sensitivity and specificity in the diagnosis of TRAS.

To find antibacterial candidate compounds, eighteen novel sulfonamide derivatives containing a fused-ring were designed and synthesized on the basis of previous studies, with structures confirmed by ¹H NMR, ¹³C NMR and MS. Antibacterial activities of the products were evaluated by the agar dilution method. The results show that these derivatives have different degrees of inhibitory activity on the tested bacteria, with the compounds IIi and IIr the most potent. The MIC of IIi for S. aureus, E. coli and MRSA was 8, 32 and 16 μg·mL^-1, respectively, and the MIC of the IIr was 8, 64 and 32 μg·mL^-1, respectively. The anti-MRSA activities of the two compounds is significant and is worthy of further structural optimization and study.

ObjectiveTo determine thallium in whole blood by atomic absorption detection method, and to investigate the eliminating effect of hemoperfusion (HP) for thallium in blood.Methods The blood of Beagle dogs which had not exposed to thallium before were obtained for preparation of thallium nitrate (TlNO3)-containing solution in three concentrations according to the conversion formula based on animal weight and volume of blood. HP was performed in the simulated in vivo environment. The content of TlNO3 in blood of the next group was determined on the amount of TlNO3 for the last HP of the former dose group. Thallium quantity in different samples was measured with atomic absorption spectrometer blood samples before and after HP. Finally, the thallium concentration in blood was analyzed statistically.Results Thallium concentrations showed a good linear relationship in the range of 0-200μg/L (r = 0.998 4). The intra-day precision (RSD) was lower than 4.913%, the intra-day recovery rate was 96.2%-111.9%; the inter-day precision (RSD) was lower than 7.502%, the inter-day recovery rate was 89.6%-105.2%. The concentration of thallium in blood was significantly reduced after HP per time in high, middle, and low dose groups [(453.43±27.80) mg/L to (56.09±14.44) mg/L in high dose group,F = 8.820,P = 0.003;(64.51±13.60) mg/L to (3.19±0.23) mg/L in middle dose group,F = 36.312,P = 0.000; (5.40±0.98) mg/L to (0.38±0.25) mg/L in low dose group,F = 46.240,P = 0.000]. The adsorption rate of four times of HP in high, middle and low dose group were (87.63±2.48)%, (95.06±1.54)% and (92.76±4.87)%, respectively, without significant difference (F = 4.231,P = 0.070 ).Conclusions The method for measuring thallium was established, and it shows a very stable, simple, sensitive for determination of thallium. HP can effectively remove thallium from blood. Thallium concentration can be reduced by 90% after four times of HP. HP is also effective even when thallium concentration is not high.

OBJECTIVETooth eruption requires the presence of the dental follicle (DF) around the unerupted tooth. This study is to investigate programmed cell death on human dental follicle cells and changes of programmed cell death under different hydrostatic pressures: 0, 50 and 100 kPa.

METHODSHuman dental follicles from third mandibular molars were surgically removed from adolescents who need for orthodontics treatment after informed content, then trypsinized and cultured. Human dental follicle cells were divided into three groups according to different hydrostatic pressures: 0, 50 and 100 kPa and their programmed cell death were labeled by using TdT-medi-ated-dUTP nick and labeling (TUNEL).

RESULTSDental follicle cells cultured were elongate shape and exhibited fibroblastic characteristics. Compared with 0 kPa, programmed cell death cells on human dental follicle cells were increased 0.23% and 31.65% under 50 kPa and 100 kPa hydrostatic pressures respectively. 100 kPa group increased significantly (P < 0.01).

CONCLUSIONIt suggested that programmed cell death occured in human dental follicle cells cultured in vitro and was influenced by different hydrostatic pressures. Hydrostatic pressure may improve tooth erup-tion through dental follicle.

Adolescent ; Apoptosis ; Dental Sac ; Fibroblasts ; Humans ; Hydrostatic Pressure ; Molar ; Tooth Eruption