Objective To analyze the correlation between 5-hydroxytryptamine transporter gene linked polymorphic region(5-HTTLPR) and twin children's behavioral problems and its interaction with environmental factors.Methods A total of 147 pairs of school-age twins aged 6-12 years were enrolled.The behavioral problems were assessed with the Child Behavior Checklist (CBCL).The genotype of 5-HTTLPR was detected by the method of PCR.The correlation of 5-HTTLPR and children's behavioral problems was performed using generalized estimating equation.Results (1) The overall incidence rate of behavioral problems in school-age twins was 24.15％ (27.94％ in the boys;20.89％ in the girls),in which the rate of thinking problems (15.31％) was the highest,and the rates of other problems were lower (3.40％-8.16％).(2) The results of correlation analysis showed that 5-HTTLPR was only related to the social problems (P＜ 0.05).The S allele of 5-HTTLPR maybe associated with the social problems.(3) The results of interaction of 5-HTTLPR with twin factors of themselves and family environmental factors showed that 5-HTTLPR was the main effect of the anxious/depressed problems,and S allele carriers were easier to occur anxious/depressed problems.Gender was the main effect of the social problems,and boys were easier to occur social problems.There was no significant interaction between 5-HTTLPR and twin factors of themselves and family environmental factors.Conclusion 5-HTTLPR genetype may have some relevance to the social and anxious/depressed problems,and S allele may be a susceptibility gene of social and anxious/depressed problems.

OBJECTIVE:To establish the quality criteria of Kesuting oral liquid. METHODS: Qualitative identification of Herba Ephedrae,Folium Mori and Radix Et Rhizoma Glycyrrhizae was conducted using TLC method. The content of Baicalin was determined by HPLC in which the chromatographic separation was performed on Spherigel ODS C18(250mm?4.6mm,5?m) column with mobile phase consisted of methanol-0.4%phosphate solvent(52∶48) at a flow rate of 1.0 mL?min-1. The UV wavelength was set at 280 nm. RESULTS: The TLC spots of Herba Ephedrae,Folium Mori and Radix Et Rhizoma Glycyrrhizae were characteristic and obvious, and which can be used for qualitative identification. The linear range of Baicalin was 0.24～1.20 ?g (r=0.999 8) with a mean recovery rate of 98.72%(RSD=1.02%,n=6). CONCLUSION:The establish criteria are suitable for the quality control of Kesuting oral liquid.

Abstract: Objective To investigate the clinical distribution characteristics, drug resistance trends and the carrying of antiseptic resistance gene of Pseudomonas aeruginosa infection in children in Suzhou, in order to provide theoretical basis for the prevention and treatment of Pseudomonas aeruginosa infection in children. Methods The clinical distribution characteristics and drug resistance trends of Pseudomonas aeruginosa isolated from Children's Hospital of Soochow University from 2016 to 2021 were retrospectively analyzed. Forthermore, 101 strains of Pseudomonas aeruginosa were randomly selected to detect the expression of 9 antiseptic resistance genes (qacEΔ1-sul1, qacE, qacEΔ1, qacG, sugE(p), sugE©, emrE, ydgE, ydgF) by polymerase chain reaction. Results Pseudomonas aeruginosa in Soochow University Children's Hospital was mainly isolated from respiratory specimen (47.83%), pus (28.60%) and urine (11.72%); the main departments were intensive care unit(21.45%), general surgery department (15.71%) and respiratory department (12.31%). Patients were mainly aged from 1 month to 1 year old and older than 6 years old (34.31% and 25.38%). The top three drug resistance rates of Pseudomonas aeruginosa were imipenem (11.25%), aztreonam (9.26%) and meropenem (8.02%). Among the 853 strains of Pseudomonas aeruginosa, the drug-resistant strains were mainly from the intensive care unit (58/183), hematology department (33/91), neonatology department (31/96), and there were 57 strains of multi-drug-resistant strains with the detection rate of 6.68%. There were 98 strains (11.49%) of Carbapenem resistant Pseudomonas aeruginosa, and the annual detection rates were 22.06%, 8.40%, 3.60%, 5.67%, 9.85% and 17.20%, respectively. Among the 9 antiseptic resistance genes, the carrying rate of ydgF, sugE© and qacE was 98.02%, 94.06% and 0 respectively. Conclusion Pseudomonas aeruginosa has high resistance to some drugs, so attention should be paid to rational drug use. The carriage rates of of two antiseptic resistance genes exceeded 90%, indicating the need to strengthen research on the mechanism of antiseptic resistance research and rational use of disinfectants

OBJECTIVE:To establish the quality standard for Mongolian medicine Yishen powder. METHODS:TLC was used for the qualitative identification of Rheum palmatum and Terminalia chebula in the preparation;HPLC was used for the contents de-termination of aloe emodin,rhein,emodin,chrysophanol and physcion:the column was Inertsil C18 with mobile phase of metha-nol-0.1% phosphoric acid(gradient elution)at a flow rate of 1.0 mL/min,detection wavelength was 254 nm,column temperature was 35 ℃ and the injection volume was 10 μL. RESULTS:The TLC pots of R. palmatum and T. chebula were clear and well-sepa-rated,negative control without interference. The linear range was 23.55-117.75 ng for aloe emodin(r=0.9999),44.72-223.62 ng for rhein(r=0.9998),43.18-215.90 ng for emodin(r=0.9997),77.41-387.12 ng for chrysophanol(r=0.9999)and 46.02-230.10 ng for physcion (r=0.9997);RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 95.80%-99.66%(RSD=1.21%,n=6),95.01%-98.07%(RSD=0.92%,n=6),95.06%-97.84%(RSD=0.5%,n=6),95.19%-97.66%(RSD=1.07%,n=6)and 95.07%-98.20%(RSD=0.95%,n=6). CONCLUSIONS:The established standard can be used for the quality control of Mongolian medicine Yishen powder.

Objective To explore the value of apparent diffusion coefficient (ADC)in differentiating brain tuberculomas from me-tastases.Methods Conventional and enhanced MRI as well as diffusion weighted imaging (DWI)were performed in 24 cases of brain tuberculomas(immature in 18 cases and mature in 6 case)and 36 cases of metastases.The mean ADC values and relative ADC (rADC)values were calculated from the enhanced and non-enhanced regions of mass and the peripheral edema regions of brain le-sions.Results The mean ADC values and rADC values in the enhanced,non-enhanced and the peripheral edema regions were 796.90×10 -6 mm2/s and 1.1 6,864.85×10 -6 mm2/s and 1.27,1 531.60×10 -6 mm2/s and 2.24 for the immature brain tuberculo-mas;791.95×10 -6 mm2/s and 1.1 6,61 1.80×10 -6 mm2/s and 0.87,and 1 488.45×10 -6 mm2/s and 2.10 for the mature tubercu-lomas;421.95×10 -6 mm2/s and 0.61,961.00×10 -6 mm2/s and 1.36,1 545.00×10 -6 mm2/s and 2.18 for the brain metastases, respectively.There were significant differences in the mean ADC values (H =42.293,P ≤0.05)and rADC values (H =42.575, P ≤0.05)for the enhance regions in the three groups .There were also significant differences in the mean ADC values (H =33.100, P ≤0.05)and rADC values (H =1 7.867,P ≤0.05)for the non-enhance regions.No significant difference in the mean ADC values (H =1.550,P ≥0.05)and rADC values (H =5.511,P ≥0.05)were found for the peripheral edema regions.Conclusion The ADC values of DWI can help to differentiate brain tuberculomas from metastases,when combining with the conventional and enhanced MRI.

Objective To analyze the epidemiologic data of patients withClostridium botulinum food poisoning, and to improve the understanding, diagnosis and treatment of food borne botulism.Methods A retrospective study was conducted. Fifty-three patients withClostridium botulinum food poisoning admitted to Chinese PLA Center of Poisoning and Treatment from January 2009 to December 2016 were enrolled, and they were divided into mild, moderate, and severe groups according to the severity of disease. The clinical data including medical history, epidemiology data, routine blood test and blood biochemistry at hospital admission, the vital signs and arterial blood gas analysis before and after treatment, as well as the occurrence frequency of symptom and sign on set were collected.Results Fifty-three patients with food borne botulism were enrolled, with 33 patients in mild group, 13 in moderate group, and 7 in severe group. Most of the patients were female, the age distribution was in large span, the outbreak of disease was in groups mainly with the family, and patients were mainly located in Hebei Province, Beijing and Henan Province. The outbreaks were mainly happened in Spring and Summer, and homemade fermentation products were still the first cause of poisoning with the average latent period of (51.01±4.78) hours. The majority of patients with botulism were in mild resulted from the type A toxin. With the aggravation of disease, hospitalization time was gradually increased, white blood cell (WBC) and neutrophils (NEUT) at hospitalization admission, and respiratory rate (RR), heart rate (HR), fraction of inspired oxygen (FiO2) before the treatment were shown in obviously rising trend, albumin (ALB) at hospitalization admission and pH, arterial partial pressure of oxygen (PaO2), arterial oxygen saturation (SaO2) before treatment were in decline. The parameters in severe group were most severe, and had significant differences as compared with those of mild group [hospitalization time (days): 72.57±39.52 vs. 6.61±3.72, WBC (×109/L): 13.01±6.44 vs. 6.85±2.07, NEUT: 0.85±0.07 vs.0.63±0.14, RR (bpm): 32.14±4.33 vs. 15.18±1.70, HR (bpm): 132.29±5.19 vs. 75.54±8.24, FiO2: 0.32±0.05 vs. 0.21±0.00, ALB (g/L): 38.57±4.65 vs. 42.09±4.57, pH: 7.08±0.10 vs. 7.38±0.07, PaO2 (mmHg, 1 mmHg = 0.133 kPa): 75.16±5.24 vs. 98.39±1.50, SaO2: 0.78±0.06 vs. 0.97±0.02, allP < 0.05]. The symptom and sign on set of 53 patients with food borne botulism was dizziness, followed by fatigue, blurred vision, nausea, and other symptoms and signs were lower than 50%, and the occurrence of dizziness with rank one happen rate was significantly higher than blurred vision and nausea (χ2 values were 7.209 and 10.502 respectively, andP values were 0.007 and 0.004 respectively). After the on time prescription of botulinum antitoxins treatment, the clinical symptoms of patients could be relived quickly. All the patients were discharged without deaths.Conclusion In order to improve the recovery of the food borne botulism poisoning patients, adequate antitoxin and the related organ supports should be prescribed on time.

Purpose To investigate the mutation status of KRAS and PIK3CA gene in colorectal cancer (CRC) primary lesions and corresponding liver metastasis and its clinical significance.Methods The gene mutations of KRAS and PIK3CA were detected in 58 cases of primary lesions of CRC and corresponding liver metastasis tissue by real-time PCR.Results The mutation rates of KRAS were 31.03％ (18/58) and 25.86％ (15/58) in primary lesions of CRC and corresponding liver metastasis tissue,respectively,in which G12D was most commonly detected.The mutation rates of PIK3CA were 8.62％ (5/58) and 10.34％ (6/58) respectively,in which the most common mutation site was E545K.Only one case carried simultaneously both mutations of KRAS (G12D) and PIK3CA (E545K).The mutation of KRAS and PIK3CA had a good consistency between primary lesions and liver metastasis.Univariate analysis showed that the mutation of KRAS was related to the primary lesion of tumor location,the quantity of metastasis and the types of tumor (P ＜ O.05),PIK3 CA mutation was associated with the synchronous/metachronous liver metastasis and the quantity of metastasis (P ＜ 0.05).Multivariate Cox regression analysis showed that synchronous/metachronous liver metastasis and the mutation of KRAS were influencing factors for prognosis of CRC.The overall survival of patients with CRC who had simultaneous liver metastases was longer than those with heterotopic liver metastases;the overall survival of KRAS wild-type mutant patients was longer than those of mutant patients (P ＜ 0.05).Conclusion The G12D site of KRAS gene has the highest mutation frequency in CRC,KRAS/PIK3CA mutation has a good consistency of the primary lesions of CRC and corresponding liver metastasis.Primary lesions can be as the source of molecular detection.To achieve individualized treatment,we need to reassess the genetic status of metastasis based on the choice of targeted therapy for precision medicine.

objective:To study the growth inhibition effect of 5azaC on human salivary gland cell line HSG. Methods:HSG cells were exposed to 5-azaC at 5?10~ -6 mol/L and 10?10~ -6 mol/L respectively for 3 days. The proliferation of in vitro cultured HSG cells was studied by cell counting. The in vivo growth of HSG cells was investigated by tumor weight measurement in nude mouse models of HSG tumor induced by transplantation of the cells subcutaneously.Results:5 azaC inhibited HSG cell proliferation by 85% and 95% respectively at above mentioned doses. In the 3-week tumor growth study, the growth of the tumor induced by 5?10~ -6 mol/L 5azaC treated cell was inhibited by 74.8%.Conclusion:5azaC can inhibit the growth of HSG cells in vitro and in vivo.

ObjectiveTo analyze the transitional shifts between with different sets of cone-beam computed tomography (CBCT) and the planning CT for liver cancer patients,and calculate the margins from clinical target volume (CTV) to the planning target volume (PTV)with and without image guided radiotherapy (IGRT).MethodsFive liver cancer patients received radiotherapy after transcatheter arterial chemoembolization (TACE).The first CBCT images (CBCT1) were obtained with Elekta CBCT plus active breathing control (ABC) system before treatment.The second CBCT images (CBCT2 ) were obtained after correcting the set-up errors and the third CBCT images ( CBCT3 ) were obtained after treatment.The CBCT images were registered and matched with the planning CT images using lipiodol as a direct surrogate for target localization.The PTV margins were calculated by comparing the shift between planning CT and CBCT according to formula M =2.5 ( Σ doctor2 + Σ set-up2 + Σ transter2 )1/2.Paired t-test was used to compare the differences between the results from CBCT1,CBCT2 and CBCT3. Results The average transition shifts in the left-right ( LR),superior-inferior (SI) and anterior-posterior (AP) directions were 0.254,-0.612,0.314 cm between planning CT and CBCT1 ;were 0.020,0.014,-0.064 cm between planning CT and CBCT2 ;and they were -0.004,0.042,-0.040 cm between planning CT and CBCT3.The PTV margins were LR 0.96 cm,SI 0.96 cm and AP 0.83 cm without IGRT,and LR 0.67 cm,SI 0.68 cm and AP 0.58 cm with IGRT.ConclusionsThe PTV margins can be reduced by 3 mm with IGRT for liver cancer using lipiodol as a direct surrogate for target localization.

Objective To investigate the relationship between the abnormalities in the area behind the heart in the four-chamber view and fetal defects, the clinical significance of assessment of area behind the heart in fetal screening.Methods 7062 fetuses were scanned.Area behind the heart in the four-chamber view and anatomical survey were detected.Results Fifty-three cases (0.8％, 53/7062) with abnormal sonographic findings in the area behind the heart in the four-chamber view were detected prenatally.Thirtyseven cases were confirmed by autopsy postnatally.Among these cases, 73.0％ (27/37) had heterotaxy syndrome,8.1％(3/37) had situs inversus totalis,18.9％ (7/37) had heart defects.Conclusions There is close relationship between the abnormalities in the area behind the heart and the fetal defects.This can be used as an effective and simple indicator in screening situs inversus and cardiovascular abnomalities.