Objective To investigate the role of CC chemokine ligand 20 (CCL20) and CC chemokine receptor 6 (CCR6) in the pathogenesis of acute necrotizing pancreatitis (ANP). Methods 48 SD rats were randomly divided into two groups: control group and ANP group. The ANP model was induced by retrograde infusion of 4 % sodium taurocholate into the biliary and pancreatic duct in SD rats. The same amount of saline was injected in the control group. The rats were sacrificed at 1, 3, 6, 12 h, the serum amylase levels and the pathological score of the pancreas were measured. The expressions of CCL20 and CCR6 mRNA and protein in pancreas were detected by immunohistochemistry and semi-quantitative RT-PCR,respectively. Results The levels of serum amylase and the histological score of ANP group were significantly higher than those of control group (P ＜ 0.01 ). The expression of pancreatic CCL20 mRNA and protein was increased in a time-dependant manner ( P ＜ 0.05 ). The expression of pancreatic CCR6 mRNA at 6h was significantly higher than that of control group (0.88 ± 0.05 vs 0. 23 ± 0.09, P ＜ 0.01 ). The expression of pancreatic CCR6 mRNA at 12h was decreased when compared with that of 6h group, but it was still higher than that of control group (0.37 ± 0. 10 vs 0. 15 ± 0.07, P ＜ 0.05 ), the change of CCR6 protein was consistent with that of CCR6 mRNA. Conclusions CCL20 and CCR6 may play an important role in the pathogenesis of ANP.

OBJECTIVETo observe effects of Ligustrazine on serum S100p protein and neuron-specific enolase (NSE) in elderly patients undergoing orthopedics operations.

METHODSTotally 60 patients undergoing selective total hip replacement, 65-80 years old, who were in line with American Society of Anesthesiologists (ASA) grade I or II, were randomly assigned to the Ligustrazine group (Group L) and the normal saline control group (Group S). The right internal jugular vein catheters were placedcephalad and ensured theirs tips in jugular venous bulbs after anesthesia induction and tracheal intubation. Patients in Group L received 2 mg/kg Ligustrazine Injection (40 drops within one minute) and those inGroup S received equal volume of normal saline via central veins before operations. Other medicines were the same for all patients during and after operation. Five millimeter blood sample was collected frominternal jugular venous bulbs before operation (T0), 24 h (T1), 72 h (T2), 168 h (7th day, T3) after operation. Serum was collected after centrifuge. S100β protein and NSE concentration were analyzed usingELISA. Mini-mental state examinations (MMSE) were scored by the same doctor at T0, T1, T2, and T3,respectively.

RESULTSThere was no statistical difference in MMSE scores, serum S1000 protein, or NSE at TO (P > 0.05). Compared with TO, S100 P protein and NSE concentration increased and MMSE scores decreased at T1, T2, and T3 in the two groups. All indices except S100P protein and NSE at T3 were statistically different between Group L and Group S (P < 0.05).

CONCLUSIONSerum S100P protein and NSE could be changed by pre-operation injecting Ligustrazine at certain dose in elderly patients undergoing orthopedics operations.

Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; Humans ; Phosphopyruvate Hydratase ; blood ; Pyrazines ; therapeutic use ; S100 Calcium Binding Protein beta Subunit ; blood

Objective To find out the potential risk factor of plague in Wanzhou section of the Three Gorges Reservoir area, and to provide scientific basis for prevention and control of plague. Methods Rodents were captured by rat traps/cages at night and identified into species in Wanzhou section of the Three Gorges Reservoir area from 2001 to 2009. Flea was counted and serum antibodies against plague F1 of rats, cats and dogs were detected by indirect hemagglutination (IHA). Plague surveillances were performed in human beings and rats. Results The rodents captured belonged to 9 species, 2 families, 2 orders and 1 classes. The average indoor rodent density was 1.16% (961/82 558), and was 1.12% (1345/119 671) outdoors. Rattus norvegicus was the dominant species,accounting for 50.37%. The proportion of R. Flavipectus was 3.80% in 2004, 4.50% in 2008 and 10.12% in 2009,showing an increasing trend year by year. There were three kinds of mice infected fleas in Wanzhou, which including Xenopsylla cheopis, Leptopsylla segnis and Ctenocephalides felis. The average rate of flea infected mice was 1.18%(82/6959) and the total flea index was 0.036. No F1 antibody against plague was detected in 6959 dogs and 160 cats serum samples. Conclusions No plague is found in Wanzhou section of the Three Gorges Reservoir area. But R.Flavipectus, Xenopsylla cheopis and Leptopsylla segnis are dominant species in Wanzhou section, and the proportion of which shows an increasing trends year by year. There is a potential risk of plague outbreaks in Wanzhou section of the Three Gorges Reservoir area.

lusions As orthodontic anchorage, mini-screw implants were different from TPA. Mini-acrew implant could not only retract the upper incisors but also slightly intrude upper incisors and upper molars.

Objective To evaluate the nutritional status of vitamin A among urban residents. Methods Using stratified random sampling method,a total of 400 residents from two cities in Zhejiang were selected. They were interviewed by questionnaire,also, the dietary survey, physical measurement and blood sample testing were used. According to Recommended Nutrient Intake( RNI)of vitamin A,to evaluate the intake of Vitamin A and analysis the nutritional status and influenc factors. Results The median of vitamin A concentration was 0. 463( inter-quartile range is 0. 213)μg/mL, and the percentage of severe vitamin A deficiency( VAD ),VAD,insufficiency and adequate serum vitamin A were 0. 25%,0. 50%,6. 75% and 92. 50% respectively. Among 299 individuals who participated in the dietary survey,the median of daily vitamin A intake was 350. 5( inter-quartile range was 351. 5)μgRE. Only 25. 42% of participants' dietary intake of vitamin A met the level of 80% RNI,while 61. 87% of peoples' daily intake of vitamin A under 60%RNI. Male, from the bigger city,older age,high level of triglyceride and more intake of cholesterol may contribute to a higher level of serum vitamin A. Conclusion The majority of urban residents had adequate vitamin A . But the intake of dietary vitamin A still should be paid more attention. Serum vitamin A was associated with age,gender and district.

Objective To assess the dietary pattern and quality of residents in Zhejiang province.Methods 21 52 residents aged 1 8 -79 years old were selected using multi-stage stratified cluster random sampling method and the data from Chinese nutrition status monitoring project during 201 0 -201 2 was used.The results were evaluated using Chinese diet balance index.Results 41.08% of the residents in Zhejiang province was mild diet imbalance and 50.79% was middle diet imbalance while insufficient and excessive intakes were coexist.Mild and middle insufficient intakes were accounted for 66.1 7%and 27.88%respectively,while mild excessive intake was accounted for 35.55%.The diet balance indexes including DBI-LBS,DBI-HBS and DBI-DQD were 46.00,26.00 and 57.00 respectively.The dietary quality of males,rural areas was lower while residents aged 40 -49 years had the lowest dietary quality.There was positive correlation between dietary quality and degree of education (P<0.05 ).The main dietary pattern of residents in Zhejiang was pattern B (62.41%)following by pattern A (26.44%).Conclusion Insufficient and excessive intakes coexist among residents in Zhejiang province.Male,living in rural areas,people aged 40 -49 years or with lower degree of education should be taken as target intervention subjects.

OBJECTIVETo realize quadratic formula optimization of Renshen Jianxin Capsule (RJC) by screening Chinese herbs with major anti-myocardial ischemia effect in RJC and optimize their optimal dosages.

METHODSBy following "uniform design-pharmacodynamic experiment-mathematical modeling-formula optimization", authors employed U10(10(8)) uniform design in the experiment. Eight Chinese herbs contained in RJC were taken as observatory factors. Electrocardiograph (ECG) changes of myocardial ischemia induced by isoproterenol were taken as pharmacodynamic indices. The mathematical model between herbal factors and pharmacodynamic indices was established using stepwise regression analysis to screen Chinese herbs with major anti-myocardial ischemia effect. Their optimal dosages were optimized using the grid algorithm.

RESULTSThe regression equation was y =1. 7889 -0. 3247 Ginseng xSalvia Miltiorrhiza -0. 0663 Astragalus membranaceus xOriental Waterplantain tuber. Forecasting factors included were Ginseng, Salvia Miltiorrhiza, Astragalus membranaceus, and Oriental Waterplantain tuber. The optimal formula dosage calculated by the grid algorithm was Ginseng 1. 62 g, Astragalus membranaceus 4. 62 g, Salvia Miltiorrhiza 2. 43 g, and Oriental Waterplantain tuber 1. 66 g.

CONCLUSIONUniform design combined with stepwise regression analysis and grid algorithm were able to realize quadratic formula optimization of RJC.

Astragalus membranaceus ; Chemistry, Pharmaceutical ; standards ; Coronary Artery Disease ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; Electrocardiography ; Humans ; Isoproterenol ; Myocardial Ischemia ; drug therapy ; Panax ; Salvia miltiorrhiza

OBJECTIVETo evaluate the effect of the pulsed Nd: YAG laser irradiation on the survival rate of human penodontal ligament fibroblast (PDLF) at different power and irradiation time settings, and to compare the morphological change of cells before and after irradiation.

METHODSThe cells were cultured and placed into the 96-well tissue culture plates. Cells were divided into groups according to the irradiation time (10 s, 20 s, 40 s, 60 s) and the output energy (0.5 W, 1.0 W, 1.5 W, 2.0 W, 2.5 W). After the irradiation, the cell number were counted and the survival rates were calculated. The correlation between the survival rate and irradiation time as well as power output was analyzed.

RESULTSNo significant reduction of survival rates were found in 10 s group, as well as in 20 s group with 0.5 W, 1.0 W setting. The increase of the power output and increase of the irradiation time caused significant reduction of cell survival rate (P <0.05). The irradiation time was more relevant to this reduction than the power output.

CONCLUSIONIt indicates that the laser irradiation may cause damage to PDLF and decrease the cell survival rate. The irradiation time is more related to this effect than the power output.

Fibroblasts ; Humans ; Lasers ; Lasers, Solid-State ; Periodontal Ligament

OBJECTIVETo explore the dose-effect relationship between 1-bromopropane (1-BP) exposure and health effects in workers.

METHODSOccupational field investigations were conducted in 1-BP factories. Ambient 1-BP concentrations were detected with detection tube, and the 8 h time-weighted average individual exposure levels (TWA-8 h) were measured by passive sampler. Workers underwent questionnaire survey, neurological examination, nerve conduction velocity examination, vibration sensation test. routine blood test as well as blood biochemical test. According to TWA values or TWA x duration values, workers were divided into three dose groups for dose-effect relationship analysis. USEPA BMDS 2.1 software was applied to calculate 1-BP benchmark dose (BMD) and its 95% lower limit (BMDL).

RESULTSThe TWA-8h concentrations ranged from 0.35 to 535.19 mg/m3 (geo-mean 14.08 mg/m3). Dose-dependent analysis showed that the motor nerve distal latency (linear regression coefficient was 0.066 6), vibration sensation of toes (linear regression coefficient were 0.157 2 and 0.193 9), creatine kinase (linear regression coefficient was -1.05) and thyroid stimulating hormone levels (linear regression coefficient was 0.1024) of 1-BP exposed workers changed in a dose-dependent manner (P < 0.05). BMD calculation based on DL as 1-BP toxic effect endpoint showed that TWA-8h of the BMD values and BMDL values were 50.55 mg/m3 and 30.78 mg/m3, respectively.

CONCLUSION1-BP causes dose-dependent changes in tibial nerve DL, vibration sensation, CK and TSH levels.

Adult ; Creatine Kinase ; blood ; Female ; Humans ; Hydrocarbons, Brominated ; analysis ; toxicity ; Maximum Tolerated Dose ; Neural Conduction ; drug effects ; Occupational Exposure ; Tibial Nerve ; physiopathology ; Workplace

OBJECTIVETo investigate the health effects of 1-bromopropane (1-BP) on female exposed workers.

METHODSFour 1-BP manufacturing plants were investigated. Workers were interviewed with questionnaire and examined with neurobehavioral core test battery, nerve conduction velocity tests of nervus tibialis and nervus suralis, vibration sensation test, hematological and biochemical tests. Ambient 1-BP concentration was measured with detection tube, and time-weighed average levels of individual workers were estimated with passive samplers.

RESULTS1-BP concentration in the plants ranged from 0 to 402.40 mg/m3 (Geomean 32.19 mg/m3). Time-weighted average exposure levels (TWA-8 h) ranged from 0.35 to 535.19 mg/m3 (Geomean 14.08 mg/m3). Compared with the control group, 1-BP exposed workers showed reduced motor nerve conduction velocity [(44.8 +/- 8.7) m/s] and sensory nerve conduction velocity [(45.5 +/- 4.9) m/s], prolonged distal latency [(7.5 +/- 2.1) ms], reduced toe vibration perception, and altered neurobehavior parameters(POMS vigor, tension, anxiety, confusion) significantly (P < 0.05). As to hematological and biochemical indicators, the exposed workers showed decreased white blood cell count [(5.6 +/- 2.17) x 10(3)/microl], red blood cell count [(3.9 +/- 0.4) x 10(6)/microl], hemoglobin [(121.1 +/- 14.5) g/L] and creatine kinase [(82.0 +/- 27.5) IU/L] (P < 0.05), and increased serum total protein (8.0 +/- 0.5 g/dl), lactate dehydrogenase [(335.2 +/- 356.6) IU/L], thyroid-stimulating hormone [(3.6 +/- 2.3) microIU/ml] and follicle-stimulating hormone levels (18.7 +/- 24.4 mIU/ml) (P < 0.05).

CONCLUSION1-BP exposure may affect peripheral nerves and central nervous system, and lead to abnormal hematological and biomedical indicators.

Adult ; Creatine Kinase ; metabolism ; Female ; Hematologic Tests ; Hemoglobins ; metabolism ; Humans ; Hydrocarbons, Brominated ; adverse effects ; Middle Aged ; Nervous System ; drug effects ; physiopathology ; Neural Conduction ; drug effects ; Occupational Exposure ; Young Adult