The theory of"harmonious higher institutions"includes the following contents: harmony-dominated scientific development ideology;scientific,humanitarian,efficient and fair regulations; all-around development and harmonious civilization-oriented teaching;equal and mutual respectcooperation and competition-oriented interpersonal relationship;and all-embracing,concise and elite campus culture.The practice should stick to four principles:①respect the diversity;②emphasize and promote the interaction of different factors;③stick to correct guiding of conflict;④stick to dynamic development ideology.

Objective To explore the way to reduce the absorption of irrigating fluid during PCNL. Methods The amount of absorbed fluid during PCNL in 20 cases (13 males and 7 females)was monitored by ethanol method. The average age was 40 years old. The maximum diameter of calculi by average was 25 mm. Heart rate and mean arterial pressure were monitored during operation.Haemoglobin concentration, serum Na+, K+, Cl-, carbon dioxide-combining power and serum creatinine were measured before and after operation. The amount of irrigating fluid, the duration of operation, and the intrapelvic pressure were recorded. Results The absorbed volume of irrigating fluid in 20 cases was from 50. 2 to 685.0 ml. There was no significant difference in heart rate, mean arterial pressure, serum Na+ , K+ , Cl- and serum creatinine between pre-operation and post-operation(P>0.05), but the postoperative haemoglobin concentration (130.4±16.3 g/L) and carbon dioxide-combining power (24.1±3.2 mmol/L) were lower than that before operation( 142.6±15.6 g/L,26.4±2.0 mmol/L), the differences were significant (P<0. 05). The mean volume of absorbed irrigating fluid in patients with the cumutative time of the intrapelvic pressure higher than 30 mm Hg >10 min,the duration of operation >1 h, or the amount of irrigating fluid >10000 ml was 381. 1, 301.6,261.6 ml respectively, which was higher than that in the other cases (142.9, 136.4, 130.2 mi), the differences were significant (P<0.05). Conclusions The ethanol method is simple, convinent,safe, valid, and is suitable for patients with compromised cardiorespiratory or renal function, who are more likely to develop volume overload because of fluid absorption.

Objective To establish experimental vascular dementia rat model and evaluate gait behavior . Methods Vascular dementia rat model induced by bilateral carotid artery ligation methods , 50 days for real-time gait behavioral training and testing after surgery .Results Compared with the sham group , Experimental vascular dementia model rats had 19 gait indicators appeared significantly statistical difference , Animal model gait abnormal behavior is mainly reflected in the forelimb step width increased (P <0.05), each foot walk cycle extension (P <0.05), Each foot stance time increased (P <0.05, P <0.01), and the swing time shortened (P <0.05), Homologous coupling shortened (P<0.05), each foot average footprint area and average intensity increased (P <0.05, P <0.01).Conclusion Experimental rat model of vascular dementia in real time gait abnormal behavior and seen in patients with clinical symptoms similar, can provide a reference model for the establishment and judgment .

BACKGROUND: Benign prostatic hyperplasia is a common disease of older males. Although the etiology remains unclear, the factors of life style and habits may have an effect on the disease.OBJECTIVE:To examine the association of cigarette smoking and body mass index with the risk of clinical benign prostatic hyperplasia.DESIGN: A hospital-based case-control study SETTINGS:Department of Epidemiology and Statistics, Public Health School,Tongji Medical College, Huazhong University of Science and Technology; Department of Preventive Medicine, Liaoning Medical College.PARTICIPANTS：Totally 343 males with benign prostatic hyperplasia of 50-82 years old (patient group),who were surgically treated between May 2004 and May 2006,were selected from the Department of Urinary Surgery of the First Affiliated Hospital and Third Affiliated Hospital of Liaoning Medical College (former Jinzhou Railway Central Hospital),Jinzhou Central Hospital and Jinzhou Second People's Hospital．Inclusive criteria：① males above 50 years old；intemational prostatic symptom score(IPSS)＞7；②Digital recta examination (DRE) after miction indicated prostate grade Ⅰ(transverse diameter＞3 cm); ③prostatic volume≥30 g;④maximum unnary flow rate＜15 mL／s；Meanwhile，361 inpatients with diseases irrelative to the risk factors of benign prostatic hyperplasia,prostatic cancer and prostatitis were selected trom the above hospitals as the control group,they were 50-82 years of age with an average of 65 years old．Informed contents were obtained from all the enrolled subjects．METHODS：All the patients and controls were interviewed using an anonymous questionnaire．All participants were asked to report whether they had smoked 20 packs of cigarettes or more in their lifetimes and,if yes,they were smokers,on the contrary they were non-smokers．Based on usual number of cigarettes reported in the questionnaire, men were categorized as 1-10，11-20，21-30 and ＞30 cigarettes per day．Based on duration of smoking,the participants were funher classified as never smoke，1-19,20-29 and ≥30 years．Body mass index(BMI)was assessed from measured body mass and body height，and che standards of BMI in adults in China was 18．5-23．9 for normal,24．0-27．9 for overweight and ≥28．0 for obesity)，then the participants were further classified as BMI＜18．4，18．5-23．9,24．0-27．9 and ≥28．0 subgroups respectively．Years of education(＜7,7-11,and≥12) and occupation(worker,peasant, Intellectual and others) were also investigated．The results of the investigation were input into computer to establish database，the odds ratios (OR) and the 95％ confidence interval(CI)in relation to the various measures were estimated using unconditional multiple logistic regression models, including number of cigarettes smoked per day，BMI,years smoked，years of education,occupation．MAIN OUTCOME MEASURES：Relationships of number of cigarettes smoked per day,years smoked．BMI,years of education and occupation with benign prostatic hyperplasia．RESULTS：Totally 343 cases in the patient group and 361 cases in the control group were involved in the analysis of results．①Patients smoked≥30 cigarettes per day had an elevated risk of benign prostatic hypertrophy as compared with the non-smokers(OR=1．32，95％ CI:0．92-2．58，P＜0．01)．②The risks of benign prostatic hypertrophy in overweight and obesity were significantly increased as compared with non-smokers(OR=1.68,95％ CI: 1．32-3．67；OR=2．35，95％CI:1．83-4．16)，③Manual worker (peasant) was negatively correlated with the risk of benign prostatic hyperplasia (χ2=6．62，P＜0．01)．CONCLUSION:Smoking 30 cigarettes per day was positively related to benign prostatic hyperplasia.For male who were both overweight(BMI 24.0-27.9)and obesity(BMI≥28.0)，smoking was significantly associated the increased risk of surgically treated benign prostatic hyperplasia.

A resonance light scattering(RLS) method for the determination of critical micelle concentration(CMC) of sodium dodecyl benzene sulfonate(SDBS) was proposed. Under room temperature, the RLS intensity of the SDBS system increased with increasing SDBS concentration. And when the concentration of SDBS approached CMC, the RLS intensity had increased sharply. The RLS peaks were appeared at 330 nm and 396 nm, respectively. The plot of the RLS intensity at 396 nm versus SDBS concentration was S-Curve. The concentration of SDBS at the intersection point of two tangents to S-curve was considered as SBDS CMC. This result was consistent with the results of the pyrene probe fluorescence spectrometry and electrical conductivity method. The influences of the concentration of Ca2+ on the aggregation behave of SDBS and SDBS-emulsion OP(OP) systems were studied by the RLS method. The results indicated that the mixed

BACKGROUND:The method of ligating or resecting rat lower limb femoral or iliac artery has been widely used to make rat models of lower limb ischemia, but there have been no stable and efective methods used to establish diabetic models of chronic atherosclerotic occlusive diseases and to evaluate the ischemic status of hindlimbs of models. OBJECTIVE: To establish type 2 diabetes rat models of lower limb ischemia by feeding with high-fat diet and to evaluate them. METHODS:Twenty rats were randomly and evenly divided into diabetes group (n=10) and control group (n=10). Rats in the diabetes group were fed with high-fat diet for 6 months, and were intraperitonealy injected with streptozotocin (50 mg/kg) to induce diabetes. Rats in the control group were fed with normal diet for 6 months. Rats in these two groups were subjected to ligation of femoral artery to establish right lower limb ischemia models. RESULTS AND CONCLUSION:At the first day of modeling, color Doppler flow imaging and CT angiography showed obviously decreased blood flow suggesting the success of establishing ischemia model. At 7 and14 days after modeling, the blood flow of rats in these two groups showed a gradual recovery as detected by color Doppler flow imaging. At 28 days after modeling, blood flow of rats in the diabetes group was significantly slower than that in the control group (P < 0.05). CT angiography showed that at 28 days after modeling, only a smal amount of compensatory increase in blood flow of the blood vessels at the ligation position of proximal right lower limb femoral artery was seen in the diabetes group, while no obvious blow was observed in the distal part. Histopathologic and immunohistochemical staining showed that at 28 days after modeling, destroyed tissue structure and inflammatory cel infiltration were observed in the ischemic region and capilary density on the affected side was lower than that on the healthy side. The protein expression of vascular endothelial growth factor in the ischemic muscle tissue of rats in the diabetes group was significantly increased compared with that in the control group (P < 0.05). These results show that diabetic rat models of lower limb ischemia can be successfuly established by long term high-fat diet feeding and femoral artery ligation and they can be validated by CT angiography.

Objective: To investigate the mechanism of action of Wuzi Yanzong pill (WYP) in rats with oligoasthenozoospermia (OAZ) via metabolomics and to provide a possible basis for improving this WYP-based treatment. Methods: A rat model of OAZ was established by treating male Sprague–Dawley rats with glucosides from Tripterygium wilfordii Hook. F. Seventy-two rats were randomly divided into six groups: control, L-carnitine (positive control), model, and low-, medium-, and high-dose WYP groups. Rats in the experimental groups were treated with WYP for 4 weeks. At the end of the treatment period, sperm cell quality (density, motility, and viability) was assessed using a semen analysis system, mitochondrial membrane potential (MMP) was assessed using flow cytometry, and testicular injury was assessed using hematoxylin and eosin staining to validate the therapeutic effect of WYP in OAZ. Further, serum metabolomics-based analysis was performed using high-performance liquid chromatography-mass spectrometry to identify differential metabolic pathways and possible mechanisms of action of WYP in OAZ treatment. Results: A rat model of OAZ was considered successfully-established after comparing the quality of spermatozoa in the model group to that in the control group. WYP-M and WYP-H treatments significantly improved sperm cell density, motility, and viability compared with those in the model group (all P < .05). Compared with the model group, both WYP-M and WYP-H treatments increased MMP values (P = .006 and P = .021 respectively), while there was no significant difference in the L-carnitine group. L-carnitine and WYP administration reversed damage to the testes to varying degrees compared with that in the model group. Further, 44 differential metabolites and four metabolic pathways, especially autophagy pathway, related to OAZ were identified via metabolomics. Conclusions WYP improves sperm cell quality and MMP in OAZ primarily via autophagy regulation. These findings can be employed to improve the efficacy of WYP in humans.

Objective: To investigate the therapeutic effects and pharmacological mechanisms of Yishen Xingyang capsule (YXC) in oligoasthenospermia (OA) rats.Methods: Forty-eight male Sprague-Dawley rats were randomly divided into eight groups of six rats each:normal control (NC);model control (MC);three different positive drug (PD);and low-, medium-, and high-dose YXC groups. A rat model of OA was established by administering glucosides of Triptery-gium wilfordii Hook. F (GTW). After YXC administration, penile erectile function was observed. The epididymis, blood, and testes of the rats were harvested for analysis of sperm quality, sex hormone levels, mitochondrial membrane potential, and the transforming growth factor (TGF)-β1/Smad signaling pathway. Results: Compared with that in the MC group, penile erectile function in the YXC groups and three PD groups increased (all P<.01). Moreover, sperm quality in the YXC groups and three PD groups improved (all P < .001). The levels of testosterone, follicle stimulating hormone, and luteinizing hormone in the three PD and YXC groups increased (all P<.05). The mitochondrial membrane potential in the three PD and YXC groups significantly improved (all P<.001). Furthermore, the YXC and three PD groups showed decreased TGF-β1 expression (all P< .05) compared with the MC group. The high-dose YXC group and three PD groups improved Smad2 and Smad4 expression (all P<.05). Conclusion: YXC improved penile erectile function and sperm quality in OA rats, and the underlying mechanism included increase in sex hormones, inhibition of sperm apoptosis, and regulation of the TGF-β1/Smad signaling pathway. Meanwhile, this study provides a new effective drug option for the treat-ment of OA, which is beneficial to male reproductive health and social harmony.

OBJECTIVETo investigate the effect of long-term and low-level occupational Mn exposure on the level of uric acid (UA) in human urine.

METHODSIn this study, 65 volunteers were recruited, who were working on welding and foundry work in an plant in Gansu province, China. Additionally, 29 control samples were collected from individuals who did not have any history of excessive Mn exposure. An improved high performance liquid chromatography system equipped with a diode-array detector (HPLC-DAD) method was developed to determine the UA level in human urine. A Spectra AA 220 Atomic Absorption Spectrophotometer (AAS) was used to measure the Mn level in the urine.

RESULTSThe analytical method was validated for concentrations ranging from 3.82-45.84 μg/mL with acceptable accuracy, precision, and recovery. Overall, the UA levels of Mn exposure samples were significantly lower than that of control samples (P<0.05).

CONCLUSIONThe practical method developed here is suitable for both routine monitoring of UA level in human urine and metabolism research. Long-term and low-level occupational Mn exposure may lead to a lower UA level in urine, and UA might be an indicator of the early stage of manganism.

Adult ; Aged ; Chromatography, High Pressure Liquid ; Female ; Humans ; Male ; Manganese ; adverse effects ; Middle Aged ; Occupational Exposure ; adverse effects ; Sex Factors ; Uric Acid ; urine ; Young Adult