Objective To study the effect of Shengmai injection on the platelet parameters and CD4+CD25+cells in peripheral blood of patients with chronic lymphocytic leukemia,and to explore the optimal regimen for patients with chronic lymphocytic leukemia.Methods One hundred and twenty patients with chronic lymphocytic leukemia were enrolled in this study from January 2012 to December 2014.(D1),vincristine 4mg(d1),prednisone 60 mg/d(d1-5)were given to the CHOP regimen in the control group: cyclophosphamide 600 mg/m2(d1),doxorubicin 25 mg/m2(d12)28d a course of treatment,a total of 4 courses,the observation group of patients in the control group of patients treated on the basis of Shengmai injection,compared the two groups of patients with chemotherapy,platelet parameters and serum CD4+CD25+T cells and Th17 cells.Results After treatment,the PLT,MPV and PDW of the observation group were(215.4± 31.7),(9.5±2.5)and(16.9±2.4),respectively,which were significantly higher than those of the control group.The CD4+CD25+T cells in the observation group were(1.5±0.8)The total effective rate of the control group was 35.0％,the total effective rate was 35.0％,and the total effective rate of the control group was 35.0％.There were significant difference between the control group and the control group(P<0.05),The difference was statistically significant.Conclusion Shengmai injection combined with CHOP regimen in chronic lymphocytic leukemia patients can improve immune function,promote platelet growth,improve platelet clinical parameters,and help improve the efficiency of chemotherapy,compared with CHOP alone Program treatment is better,worthy of clinical application.

ObjectiveTo establish a method for the determination of 1,1,1,2-tetrachloroethane (TeCA) and 1,1,2,2-TeCA in human urine using liquid-liquid extraction-gas chromatography. Methods The 5.0 mL urine sample was mixed with 2.0 g anhydrous sodium sulfate and 5.0 mL ethyl acetate, then vortexed mixing. The 1.0 mL extraction was separated by 100% dimethylpolysiloxane capillary gas chromatography column, detected by flame ionization detector, and quantified by an external standard method. Results The linear ranges of 1,1,1,2-TeCA and 1,1,2,2-TeCA were 0.250-50.750 mg/L, with both correlation coefficients of >0.999 9. The detection limit of 1,1,1,2-TeCA in urine was 0.020 mg/L, and the lower limit of quantification was 0.060 mg/L. The average recovery was 88.02%-101.32%, and the within-run and between-run relative standard deviations (RSDs) were 0.11%-0.47% and 0.39%-1.09%, respectively. The detection limit of 1,1,2,2-TeCA in urine was 0.050 mg/L, and the lower limit of quantification was 0.150 mg/L. The average recovery was 93.42%-101.32%, and the within-run and between-run RSDs were 0.28%-1.04% and 0.50%-1.03%, respectively. Both the 1,1,1,2-TeCA and 1,1,2,2-TeCA cannot be stored at room temperature. The 1,1,2,2-TeCA can be stored at 4 ℃ for at least three days. At -20 ℃, the 1,1,1,2-TeCA can only be stored for one day, while 1,1,2,2-TeCA can be stored for at least five days. Conclusion This method has high sensitivity, good specificity, simple sample pretreatment, and more intuitive and reliable results. It can be used to determine the level of 1,1,1,2-TeCA and 1,1,2,2-TeCA in urine of occupational population.

OBJECTIVETo study the clinicopathologic characteristics of extrarenal malignant rhabdoid tumor (E-MRT) with emphasis on diagnosis and differential diagnosis.

METHODSThe clinical and pathologic data of 8 E-MRT cases were reviewed. The outcome was analyzed.

RESULTSThere were four males and four females. The age at presentation ranged from 3 days to 8 years (mean, 2.6 years; median, 3 years). The tumors were located in the extremities (n = 1), head and neck (n = 2), trunk (n = 2), cervical cord (n = 1), liver (n = 1) and retroperitoneum (n = 1). Histologically, the tumors were composed of a diffuse proliferation of rounded or polygonal cells with eccentric nuclei, prominent nucleoli, and glassy eosinophilic cytoplasm containing hyaline-like inclusion bodies, arranged in sheets and nests. Cellular atypia was easily observed and mitotic activity was high. Necrotic and hemorrhagic areas were abundant. On immunohistochemistry, the tumor cells expressed vimentin and epithelial marker such as EMA, AE1/AE3, and CAM5.2. The absence of INI1 protein expression was a distinctive feature. Follow-up of all eight cases revealed five deaths in one year and the other three were disease-free at last follow-up of one month, three months and seven months.

CONCLUSIONSE-MRT is a rare and highly aggressive tumor of infancy and childhood. Recurrence and distant metastasis was common and the 5-year survival rate is low. Increased awareness of the clinocopathologic features and immunophenotypes of E-MRT is helpful for correct diagnosis and effective treatment.

Child ; Child, Preschool ; Diagnosis, Differential ; Extremities ; Female ; Head and Neck Neoplasms ; metabolism ; pathology ; Humans ; Immunohistochemistry ; Infant ; Infant, Newborn ; Male ; Neoplasm Recurrence, Local ; Retroperitoneal Neoplasms ; metabolism ; pathology ; Rhabdoid Tumor ; metabolism ; pathology ; Treatment Outcome ; Vimentin ; metabolism

Objective:To examine the effects of transcutaneous electrical acupoint stimulation(TEAS)on pain and rapid recovery in elderly patients undergoing thoracoscopic surgery.Methods:A total of 60 elderly patients undergoing thoracoscopic surgery were randomly divided into the TEAS group and the control group.Patients in the TEAS group received TEAS in bilateral acupoints of Hegu, Neiguan, Houxi and Zhigou at a frequency of 2/100 Hz for 30 min before anesthesia induction.The electrical stimulation intensity went from weak to strong, and gradually adjusted to the patient's maximum tolerance(10 to 15 mA)continuously for 30 min; TEAS continued during intraoperative anesthesia with a stimulation intensity of 30 mA and a frequency of 2/100 Hz until the end of surgery.Patients in the control group were given electrode pads at the same acupoints without electrical stimulation.Results:Compared with the control group, patients in the TEAS group were associated with significantly decreased doses of Sufentanil[(57.93±5.54)μg vs (44.30±4.03 )μg, t=-10.903, P=0.000)], Remifentanil[(1.56±0.26)μg vs (1.08±0.18)μg, t=-8.3043, P=0.000)], Propofol[(763.23±62.04)mg vs (559.20±46.44) mg, t=-14.420, P=0.000)]and Dexmedetomidine[(545.07±53.36) vs (301.67±43.27) μg, t=-19.405, P=0.000)], reduced frequency of analgesic pump pressing(9.9±2.0 vs 2.9±1.3, t=-10.903, P=0.000), decreased VAS scores 24 h(3.53±1.07 vs 1.90±0.66, t=-7.090, P=0.000)and 48 h(1.37±0.61 vs 0.93±0.37, t=-4.660, P=0.000)postoperatively.Time to regaining consciousness, extubation and detachment were also markedly shortened in the TEAS group.In addition, time to postoperative feeding and time to postoperative ambulation were also reduced.Postoperative hospitalization days( P<0.05)and anesthesia cost( P<0.01)both significantly decreased in the TEAS group compared with those in the control group.Patients in the TEAS group had lower rates of nausea, vomiting, decreased oxygen saturation, dyspnea, dizziness, agitation and lethargy, and increased heart rate and decreased mean arterial pressure after the opening of the pleura(H1)compared with those in the control group(all P<0.05). Bispectral indexes were maintained between 40 and 60 after anesthesia in both groups(all P<0.01). Conclusions:TEAS-assisted anesthesia can effectively alleviate pain in elderly patients undergoing thoracoscopic surgery and promote rapid recovery after operation.

Objective: To establish a solvent desorption-gas chromatography method for determination of dimethyl carbonate (DMC) in workplace air. Methods: The air samples were collected using activated carbon tubes, desorbed by carbon disulfide, separated by dimethylpolysiloxane capillary columns, and detected by a flame ionization detector. Results: The linear range of DMC was 2.14 to 1.07×10⁴ mg/L, and the correlation coefficient was greater than 0.999. The detection limit was 0.14 mg/L, the lower limit of quantification was 0.47 mg/L, the minimum detection concentration was 0.10 mg/m³, and the minimum quantification concentration was 0.32 mg/m³ (based on 1.5 L workplace air). The average desorption efficiency of the method was 96.2% to 102.0%. Both the within-run and between-run relative standard deviations were 0.9% to 2.3%. The samples could be stored for at least seven days at four celsius degree. Conclusion: This method shows high desorption efficiency, high sensitivity, good precision and is simple in using. It can be used for the determination of DMC in workplace air.

Objective To observe the effect of pretreatment with Rhizoma Alismatis extract on cardiac function and cysteinyl aspartate specific protease-3 (caspase-3)in ischemia-reperfusion injury of rats.Methods Male Sprague-Dawley(SD)rats were randomized into a sham-operated group (S group),an ischemia-reperfusion group(IR group),Rhizoma Alismatis water extract group(S1 group),Rhizoma Alismatis alcohol extract group(S2 group)and Rhizoma Alismatis polysaccharide group(S3 group).At the end of 14-day of intragastric gavages,rats were subjected to 40 min(T1)of LAD(left anterior descending)coronary artery ligation (ischemia)and 120 min (T2)of ligation loosening (reperfusion),called as myocardial ischemia-reperfusion(IR)models.Then,at the end of T1 and T2,the left ventricular end diastolic pressure (LVEDP),left ventricular systolic pressure (LVSP),and maximum rise/fall rate of left intraventricular pressure(± dp/dtmax)were recorded respectively.The level of creatine kinase(CK)and lactate dehydrogenase(LDH)were determined.The area of myocardial infarction and the expression level of caspase-3 protein were tested.Results At end of T2,compared with the index values of IR group as a non-treatment control[LVEDP(6.70 ±0.22)mmHg,LVSP (86.16±15.11)mmHg,+dp/dtmax(997.99±151.03)mmHg,-dp/dtmax(663.71±68.55)mmHg,CK(10.54±2.04)U/L,LDH(296.51±7.00)U/L,the size of myocardial infarction(39.82±11.80)％and expression level of caspase-3(123.42±14.77)],the treatment groups of S1,S2,and S3 showed a lower levels of LVEDP [(5.89 ± 0.47) mmHg,(5.89 ± 0.67) mmHg,(6.07 ±0.51) mmHg],of activity of CK[(8.60± 1.67)U/L(8.90±1.27)U/L,(9.39±0.83) U/L],of LDH[(239.33±30.81) U/L,(223.63 ± 20.26) U/L,(241.19 ± 45.56) U/L],of size of myocardial infarction[(30.39 ± 5.44) ％,(32.18±5.90)％,(33.12±8.16)％],and of expression level of caspase3 protein[(73.44± 15.28),(65.47±12.53),(65.05± 10.45)],(all P＜0.01 or＜0.05);but showed a higher levels of LVSP[(99.24±12.00)mmHg,(97.05±12.45)mmHg,(97.06±7.61) mmHg],and of ±dp/dtmax [(1 137.33±85.70)mmHg,(1 147.24±118.07)mmHg,(1 124.50±141.47)mmHg];[(604.77± 68.37)mmHg,(616.61±46.73)mmHg,(708.76±81.44)mmHg],(all P＜0.01 or＜0.05).Conclusions Pretreatment with Rhizoma Alismatis extract can effectively improve the cardiac function of ischemic repeffusion injury in vivo in rats,and reduce myocardial infarction size and myocardial enzyme release.The mechanism may be related to the down-regulation of apoptotic protein caspase-3 in myocardial tissue.

ObjectiveTo understand the monitoring result of occupational hazard in the workplace of key industries in Guangdong Province from 2020 to 2023. Methods The data of occupational hazards in the workplace of 20 key industries in Guangdong Province from 2020 to 2023 were collected from the “Workplace Occupational Hazard Monitoring System” of the Chinese Disease Prevention and Control System subsystem. The monitoring result of occupational hazard factors, occupational health training, occupational health examination, occupational protection, detection of occupational hazardous agents such as dust, chemical substances and noise were analyzed. Results A total of 13 058 enterprises from key industries were recruited as the monitoring subjects in Guangdong Province. There were 290 large-, 1 342 medium-, 7 635 small-, and 3 791 micro-enterprises, with small and micro-enterprises accounting for 58.5% and 29.0% of the total, respectively. A total of 7 542 enterprises exceeded the national standard in the detection of occupational hazards, with a rate of 57.8%. A total of 1 942 517 workers from 13 058 enterprises were recruited, with 835 567 workers were exposed to occupational hazards, with a rate of 43.0%. The rate of occupational health training for enterprise leaders, occupational health management personnel, and workers was 71.9%, 73.8%, and 86.5%, respectively. The abnormal rate of occupational health examinations for workers exposed to noise, dust, and chemical agents was 2.0%, 0.6%, and 1.0%, respectively. The distribution rate of dust masks, anti-poisoning masks or face masks, and noise prevention earplugs or earmuffs was 83.3%, 71.3%, and 77.8%, respectively. The rate of installation of dust prevention facilities, anti-poisoning facilities, and noise prevention facilities was 85.6%, 81.2%, and 50.1%, respectively. The rate of exceeded the national standard of dust, noise in the worksites/types and workplaces showed a decreasing trend year by year (all P<0.01), while the rate of exceeded the national standard of chemical agents in worksites/types and workplaces showed an increasing trend year by year in various occupational hazards (all P<0.01). Conclusion Occupational hazards in the workplace of key industries in Guangdong Province are relatively common. The proportion of workers exposed to occupational hazards is relatively high. It is necessary to further improve the use of noise prevention facilities and protective equipment, strengthen occupational health training for enterprises throughout the province and regularly monitor occupational hazards to reduce the risk of occupational diseases.

{L-End}Objective To establish a method for the simultaneous determination of dimethyltin (DMT), trimethyltin (TMT), diethyltin (DET), and triethyltin (TET) in human whole blood using high performance liquid chromatography-inductively coupled plasma-mass spectrometry (ICP-MS). {L-End}Methods The 1.0 mL of blood was added with 4.0 mL 65% aqueous solution (containing 6% acetic acid), extracted and separated by C₄ column (150 mm×3 mm×3 μm) using a mobile phase of methanol and 4% acetic acid aqueous solution (containing 0.25 mmol/L tropolone) at a volume ratio of 35∶65, and detected by ICP-MS. {L-End}Results The linear range of DMT, TMT, DET, and TET was 30.60-550.80, 29.00-522.00, 46.10-829.80, and 34.05-612.90 μg/L, respectively. All correlation coefficients were 0.999. The detection limit of DMT, TMT, DET and TET was 21.40, 20.30, 32.27 and 23.80 μg/L, respectively. The recovery rate was 81.9%-104.9%. The within-run and between-run relative standard deviation was 1.6%-6.9% and 0.1%-10.0%, respectively. The samples can be stored at -20 ℃ and 4 ℃ for at least three days. {L-End}Conclusion This method can be used for trace analysis of DMT, TMT, DET, and TET in whole blood.

Objective: To establish a solvent desorption-gas chromatography method for the determination of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air. Methods: The 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air were collected using activated carbon tubes, desorbed with carbon disulfide, and separated and detected by gas chromatography. The quantifications were based on standard curves. Results: The linear ranges of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane were 0.98-395.50 and 0.87-395.50 mg/L, respectively, with the correlation coefficient of 0.999 95. The detection limits were 0.29 and 0.26 mg/L, respectively. The average of desorption efficiency was 92.04%-104.67%. The within- and between-run relative standard deviations were 1.42%-2.09% and 1.63%-6.09%, respectively. The sampling efficiency was more than 98.00%. The samples could be stored at room temperature for at least 14 days. Conclusion: This method can be used in detection of 1,1,2,2-tetrachloroethane and 1,1,1,2-tetrachloroethane in workplace air.

Objective To establish a high performance liquid chromatography (HPLC) method for simultaneous determination of six aniline compounds (ADs) in workplace air. Methods GDH-1 air sampling tube was used to collect six co-existing ADs such as aniline, o-toluidine, N-methylaniline, m-methylaniline, p-methylaniline and N,N-dimethylaniline in the vapor and aerosol of workplace air. The samples were desorbed and eluted using a methanol solution containing 1.00% ammonia water, followed by separation on a C₁₈ chromatographic column and detection using a diode array detector. Results The quantification range of the method was 0.19 -253.50 mg/L, with the correlation coefficient of 0.999 9 for all six ADs. The minimum detection range was 0.02-0.06 mg/m³, and the minimum quantitation range was 0.04-0.19 mg/m³ [both calculated for a 15.0 L sample with a desorption (elution) solution volume of 3.00 mL]. The average desorption and elution efficiencies were 92.15%-104.41% (silica gel) and 94.29%-104.29% (filter membrane). The intra-assay relative standard deviation (RSD) ranged from 0.90%-9.72% (silica gel) and 0.57%-6.96% (filter membrane). The inter-assay RSD ranged from 2.03%-9.78% (silica gel) and 2.50%-8.62% (filter membrane). The samples were stable at room temperature for seven days. Conclusion This method can be used for the simultaneous determination of six ADs in workplace air.