Electromagnetic Fields ; Environmental Exposure ; Humans ; Radiation Dosage ; Threshold Limit Values

The C3 cleavages of human blood kept at different temperatures in vitro were studied. In 14 autopsy cases, the postmortem intervals(PMI) were estimated based on the C3 cleavage rates and the rectal temperatures. The 95% confidence of predicting PMI was?11 hours. The phenotyping of C3 could be achieved while the C3 cleavage rate was measured. It is suggested that it is useful for the personal identification of unknown corpses.

OBJECTIVE:To establish an LC-MS method for the determination of the ritodrine content in human plasma.METHODS:The determination was performed on Agilent Eclipse Plus C18 column with the column temperature kept at 40 ℃.The mobile phase consisted of methanol-water(95∶5,containing 0.02 mol?L-1 ammonium formate)with a flow rate of 0.5 mL?min-1.The extraction agent was acetic ether-dichloromethane(4∶1).A triple quad mass spectrometer system equipped with an electro spray ionization ion-trap source was used as the detector and operated in the positive ion model.Selected reaction monitoring(SRM)was employed to detect ritodrine(m/z 288.2→121.1)and the internal standard dobutamine(m/z 302.1→107.0).RESULTS:The linear range of ritodrine was 0.25～100 ng?mL-1(r=0.999 1),with the lower limit of quantification at 0.25 ng?mL-1.Both the intra-day RSD and inter-day RSD were less than 15%.The methodological recovery was 98.00%～103.44%.CONCLUSION:The method is sensitive,accurate,reproducible,specific and suitable for the pharmaceutical study of ritodrine.

Atlanto-axial complex is the most important functional unit of the cervical spine.Atlanto-axial instability or dislocation,one of the most serious pathologies in spinal surgery,is often managed by posterior atlantoaxial fixation and fusion.Several posterior fixation techniques have been used to stabilize the atlanto-axial complex,including wire/cable-bone fixation,Halifax clamps,transarticular screw fixation,screw-plate fixation and screw-rod fixation.For atlanto-axial dislocation that cannot be reduced with skull traction before operation,intraoperative reduction is often needed.Current intraoperative reduction techniques can be classified into transoropharyngeal surgical release followed by posterior reduction and fixation,transoropharyngeal reduction and fixation,and posterior reduction and fixation using screw-rod system according to approaches.Furthermore,posterior reduction can be performed using elevating-pull,leverages,and cantilever techniques.This study reviews the intraoperative reduction and fixation techniques mentioned above.

Objective: To develop a novel method using high-performance capillary electrophoresis coupled with DAD (HPCE-DAD) for the simultaneous determination of 10 phenolic compounds (luteolin-7-O-glucoside, rutin, quercetin-3-glucoside, quercetin-3- rhamnoside, salicylic acid, luteolin, kaemferol, quercetin, gallic acid, and protocatechuic acid) in Bidens bipinnata. The extraction efficiency of above mentioned compounds was compared using six different ethanol/water solutions. Methods: The effects of pH value and concentration of buffer, applied voltage, and temperature on the separation were researched. The 10 compounds were baseline separated within 16 min in a 60 cm length capillary at a separation voltage of 25 kV with a running buffer consisting of 25 mmol/L borate (pH 9.5) at wavelength of 214 nm. Results: Excellent linearities of luteolin-7-O-glucoside, rutin, quercetin-3-glucoside, quercetin-3-rhamnoside, salicylic acid, luteolin, kaemferol, quercetin, gallic acid, and protocatechuic acid were observed at 5.0-120, 5.0-120, 5.0-120, 5.0-120, 1.0-120, 2.5-120, 5.0-120, 2.5-120, 2.5-120, and 2.5-120 mg/L, respectively. The detection limits were at 2.5, 2.5, 2.5, 2.5, 0.5, 1.0, 2.5, 1.0, 1.0, and 1.0 mg/L, respectively. The relative standard deviations (RSD) of precision were below 5.17% (n = 6). The mean recoveries for 10 phenolic compounds in B. bipinnata ranged from 94.4% to 105.8%, with RSD values of 0.32%-4.33%. Conclusion: The contents of luteolin-7-O-glucoside, rutin, quercetin-3- glucoside, quercetin-3-rhamnoside, salicylic acid, luteolin, kaemferol, quercetin, gallic acid, and protocatechuic acid in B. bipinnata are 95.04-105.84, 78.03-110.45, 96.45-177.96, 178.78-300.00, 62.06-66.54, 71.08-72.85, 77.39-95.30, 68.27-77.43, 68.47- 88.47, and 107.24-142.43 μg/g, respectively.

[Objective]To explore the clinical effect of cervical spondylotic radiculopathy treated with intervertebral foramen block and brachial plexus traction-like technique.[Methods]54 cases of cervical spondylotic radiculopathy were randomly divided into two groups,i.e.control group(cervical traction and brachial plexus traction-like technique) and treatment group(added with intervertebral foramen block).[Results]The cure rate and effective rate were 66.67% and 92.59% in treatment group,and 25.93% and 78.78% in control group,respectively.Clincal efficacy is significantly better in treatment group than that in control one(P

Objective To investigate the value of neutrophil-to-lymphocyte ratio in evaluation of prognosis in patients with early cervical cancer before radical resection. Methods A restropective study was performed in 76 patients who underwent radical resection for early cervical cancer in our hospital between 2007 and 2009. All patients were diagnosed by pathology. All patients did not accept neoadjuvant therapy , the median value of neutrophit-to-lymphocyte ratio (NLR) was 1.94 (0.73-9.31 in range). Based on this value of 1.94 as threshold, all patients were divided into 2 groups: a low NLR(≤1.94, n=38) group and a high NLR ( >1.94, n=38) group. Univariate and multivariate analyses were performed to assess the effectiveness of preoperative NLR to the prognosis in patients who underwent radical hysterectomy combined with pelvic lymph node dissection. Results The preoperative NLR was different significantly in the depth of stromal infiltration, lymphatic metastas, FIGO stage and pathological type between the low NLR group and the high NLR group. The high NLR group, lymphatic metastas, postoperative radiotherapy and FIGO stageⅡ were all risk factors for prognosis and disease-free survival in univariate analysis.Multivariate analysis revealed that NLR, lymphatic metastas and FIGO stageⅡwere independent risk factors for disease-free survival. FIGO stageⅡand lymphatic metastasis were independent risk factors for overall survivaI. Conclusion Preoperative NLR was found to correlate to unfavorable histopathologic features of cervical cancer. The preoperative NLR may be used as a useful and easy biomarker for disease-free survival in patients with cervical cancer, but not an independent risk factor for poor prognosis.

Objective To study the effect of the serum levels of 25-hydroxyvitamin D3 [25-(OH)D3] and total IgE (TIgE) in pathogenesis of the children bronchial asthma.Methods Twenty-two children with bronchial asthma (bronchial asthma group) and 20 healthy children (control group) were selected.The serum levels of 25-(OH)D3 and TIgE in the children of 2 groups were detected.Results The level of serum 25-(OH)D3 in bronchial asthma group was significantly lower than that in control group [(23.64 ± 3.89)μ g/L vs.(35.82 ± 4.37) μ g/L],there was statistical difference (P ＜ 0.05).The level of serum TIgE in bronchial asthma group was significantly higher than that in control group [(208.62 ± 32.59) kU/L vs.(73.84 ± 18.86) kU/L],there was statistical difference (P ＜ 0.05).There was negative correlation between the level of serum 25-(OH)D3 and TIgE in bronchial asthma group (r =-0.832,P ＜ 0.01),but there was no correlation between the level of serum 25-(OH)D3 and TIgE in control group (r =-0.038,P ＞0.05).Conclusions The lack of 25-(OH)D3 may be associated with allergy and childhood bronchial asthma.By monitor the levels of 25-(OH)D3 and TIgE may assess condition of childhood bronchial asthma.

Objective To investigate the epidemic situation and trend of brucellosis in Jinzhong City of Shanxi Province,and to provide a basis for formulating prevention and control measures.Methods Surveillance datas of human brucellosis in Jinzhong City from 2008 to 2012 were collected throng the national network straight quote system of infectious diseases and the centers for disease control and prevention of counties(districts,cities).Descriptive epidemiological method was used to analyze the distributions of region,time and population of brucellosis.Results A total of 3 627 cases were infected with brucellosis in Jinzhong City from 2008 to 2012,and the incidence of brucellosis was increased from 19.63 per 100 000 to 28.46 per 100 000.All counties(districts or cities) had reported epidemic from 2008 to 2012.The onset time focused on March-July each year,with obvious seasonal periodicity.The ratio of male to female was 5 ∶ 1.The ages were in 35-＜ 65 years old,accounting for 74.00％(2 684/3 627).Brucella infections were given priority to farmers and herdsmen,accounted for 93.63％ (3 396/3 627).Conclusions The epidemic of human brucellosis in Jinzhong City is in a spreading trend.Surveillance,timely analysis and report of the epidemic,health education,and inter-departments cooperation are in need to conduct in order to control the spread of epidemic.

[Objective]To evaluate the efficacy of Shenmai injection combined with psychotherapy in chemotherapy of non-small cell lung cancer.[Method]79 cases of advanced non-small cell lung cancer were randomly divided into two groups,40 cases in observation group with Shenmai injection combined with chemotherapy and psychotherapy,39 cases in control group with chemotherapy alone.The Karnofsky scores,therapeutic efficacy,one year survival rate and incidence of myelosuppression were evaluated.[Result] The two groups were significantly different in Karnofsky scores,therapeutic efficacy and one year survival rate.The improvement and stability rate of Karnofsky scores and that of therapeutic efficacy were 75.0% and 70.0% in observation group,with 46.2% and 46.2% in control group,respectively.One year survival rate was 47.5% in observation group and 25.6% in control group,respectively.The incidence of myelosuppression had significant differences in the two groups,with grade 2～4 leucopenia 32.5% in observation group and 53.8% in control group(P=0.032),with grade 2～3 thrombocytopenia 30.0% in observation group and 46.2% in control group(P=0.032).[Conclusion] Combination treatment in observation group was superior to the treatment in control group,with a higher Karnofsky scores,more effective therapy,a higher one year survival rate and a lower incidence of myelosuppression.The treatment of Shenmai injection combind with chemotherapy could reduce toxicity and enhance therapeutic efficacy.