Objective To compare the curative effects of different ideas for application of vasoactive drugs in patients of congenital heart disease with SPAH during perioperative period and to choose a method to improve the survival rate of patients with high-risk SPAH.Methods Thirty two patients were separated into two groups randomly,one group was treated by vasodilator to dilate the pulmonary artery and decrease the pulmonary pressure as conventional therapeutic strategy,the other was treated by vasoactive drugs to decrease the right cardiac output,which maintain the normal vessel resistance and cardiac output and reduce right heart failure.Indexes were recorded respectively,including hemodynamic,right cardiac working index(RCWI),the time of using respirator and postoperative complications to compare the differences.Results Indexes were recorded in two groups as following:Aortic/pulmonary artery pressure inversion(6.25％ vs.56.25％),RCWI (1626.87 ±411.23 vs.3808.99 ± 275.52),incidence of right heart failure (6.25％ vs.93.75％),respirator applying time[(68.00 ± 7.17) h vs.(115.00 ± 13.68) h],ICU time[(5.0 ± 0.8) d vs.(8.0 ± 1.5) d],incidence of postoperative pulmonary complications (6.25％ vs.81.25％),mortality(0 vs.12.5％).Conclusion The new therapeutic idea that using vasoactive drugs to reduce RCW1 and to maintain peripheral vessel resistance and appropriate cardiac output is superior for postoperative complications and mortality reduction.

By combining frequency modulation Chirp Z transform ion mobility spectrometers (IMS) and multi nozzle electrospray array ionization source, a method of NanoESI-Chirp Z transform ion mobility spectrometry-high performance liquid chromatography was developed for the determination of n-alkyl ammonium bromide compounds.The parameters of NanoESI-Chirp Z transform IMS such as electric field intensity, solvent composition, and solution flow rate were investigated and optimized.Subsequently, four kinds of n-alkyl ammonium bromide compounds were respectively detected by this developed Chirp Z transform method and Fourier transform method, and the obtained results were compared.The result indicated that the optimum conditions were electric field intensity of 4.5 kV, and ESI solution flow rate of 8 μL/min.Then a test mixture containing tetrabutylammonium bromide, tetrapentylammoniumbromide, tetrahexylammonium bromide, tetraheptylammonium bromide, tetranoctylammoniumbromideandtetrakis(decyl) ammonium bromide was successfully separated and determined by the HPLC-nanoESI-Chirp Z IMS method.Chirp Z transform method provided higher signal to noise ratio compared to conventional signal averaging method, and was superior to FT method in the determination of drift time.

OBJECTIVE To compare the metabolomic characteristics of stage T1 papillary thyroid carcinoma(PTC)and nodular goiter(NG),and the relationship between metabolites and lymph node metastasis of PTC.METHODS Serum samples were collected from 60 patients with stage T1 PTC and 30 patients with NG who underwent thyroidectomy at the Department of Otolaryngology Head and Neck Surgery,Civil Aviation General Hospital between September 2021 and April 2022.The PTC group was divided into the N+ group with lymph node metastasis and the N-group without lymph node metastasis according to the presence or absence of lymph node metastasis.The serum metabolites of the N+ and N-groups and the PTC and NG groups were compared and analyzed using an ultra-performance liquid chromatography-mass spectrometry(UPLC-Q-Exactive-MS)coupled platform,and principal component analysis(PCA),partial least squares discriminant analysis(PLS-DA),and orthogonal partial least squares discriminant analysis(OPLS-DA)was performed using SIMCA-P 14.1 software.OPLS-DA modeling,combined with FDR-corrected Mann-Whitney-Wilcoxon test results and metabolite difference multiples in the two groups undergoing comparison,etc.to screen for potential small molecule metabolic markers,and to establish a joint diagnostic model by binary logistic regression analysis.RESULTS There were no significant differential metabolites between the N+ group with lymph node metastasis and the N-group without lymph node metastasis.Seven differential metabolites were found between PCA patients and NG patients,and the five relevant metabolic pathways were the pentose phosphate pathway,pentose and glucuronide interconversion,glycolysis/gluconeogenesis,fructose,and mannose metabolism,and fatty acid biosynthesis.The differential metabolite with an area under the ROC curve>0.9 was D-glyceraldehyde 3-phosphate,and another N-undecanoylglycine,uronic acid,and the area under the ROC curve for three metabolites,N-undecanoylglycine,uric acid,and triiodothyronine glucuronide,was>0.8.CONCLUSION PTC patients differed from NG patients mainly in glucose metabolism and lipid metabolism,and D-glyceraldehyde 3-phosphate could be distinguished from NG patients with the aid of N-undecanoylglycine,uric acid,and triiodothyronine glucuronide,combined with imaging findings.Also,no significant differences in serum metabolites were found in the N+ group compared with the N-group,and the presence or absence of lymph node metastases did not affect serum metabolites in patients with stage T1 PTC.

【Objective】 To elucidate the possible role of arginine and histidine in the pathogenesis of schizophrenia by exploring the serum levels of semi-essential amino acids (arginine and histidine) in patients with schizophrenia and their correlation with psychiatric symptoms. 【Methods】 We selected 72 inpatients with schizophrenia admitted to The First Affiliated Hospital of Xi’an Jiaotong University from March 2021 to October 2022 and 72 healthy volunteers enrolled in Yanta Community during the same period as the research subjects. Serum arginine and histidine levels were measured in patients with schizophrenia and healthy controls using serum liquid chromatography-mass spectrometry (LC-MS). We used the Positive and Negative Symptom Scale (PANSS) to evaluate the mental symptoms of patients with schizophrenia and analyzed the correlation of serum arginine and histidine levels with disease course, frequency of onset, and PANSS score. 【Results】 The levels of serum arginine (P<0.001) and histidine (P=0.011) in the schizophrenia group were significantly lower than those in the control group. The levels of serum arginine and histidine were significantly negatively correlated with the frequency of onset (rs=-0.410, rs=-0.262), total score of PANSS (rs=-0.298, rs=-0.256), positive factors (rs=-0.299, rs=-0.234) and cognitive impairment factors (rs=-0.251, rs=-0.296). In addition, serum arginine levels had significantly negative correlation with anxiety and depression factors (rs=-0.269, P<0.05). 【Conclusion】 The serum levels of arginine and histidine in patients with schizophrenia are significantly lower than those in healthy individuals, and are negatively correlated with overall mental symptoms, severity of positive symptoms and cognitive impairment. The severity of anxiety and depression symptoms is negatively correlated with arginine levels. The detection of serum arginine and histidine can provide reference for the diagnosis and assessment of the severity of schizophrenia in the future.

【Objective】 To explore the effect of childhood maltreatment on clinical symptoms and early efficacy of antipsychotics in patients with schizophrenia. 【Methods】 Totally 73 schizophrenic patients were divided into mild maltreatment group(n=42) and severe maltreatment group(n=31) according to the Child Trauma Questionnaire(CTQ). The Positive and Negative Symptom Scale(PANSS) and Clinical Global Impression(CGI) were measured and compared between the two groups at baseline and 3 weeks after antipsychotic treatment to analyze the correlation between child maltreatment experience and mental symptoms and the response to early treatment of antipsychotics. 【Results】 PANSS positive factor score(P=0.026) and cognitive deficit factor score (P=0.042) were significantly higher in severe abuse group than in mild abuse group. The positive factor was significantly positively correlated with emotional abuse factor in CTQ score(r=0.257, P=0.028), and the cognitive deficit factor was significantly positively correlated with emotional neglect factor(r=0.283, P=0.015). After antipsychotic treatment, the reduction rate of PANSS negative factor in severe abuse group was significantly lower than that in mild abuse group(P=0.035), and had the highest correlation with CTQ physical abuse factor(r=-0.302, P=0.011). 【Conclusion】 The severity of childhood maltreatment experienced by schizophrenic patients is more related to positive symptoms and cognitive deficits, and more childhood maltreatment experience will affect the improvement of negative symptoms by antipsychotics, suggesting a poor prognosis.

【Objective】 To study the correlation of clinical symptoms and cognitive functions with serum inflammatory factors in schizophrenia. 【Methods】 A total of 42 SCz patients (case group) and 47 healthy controls (control group) were enrolled in this study. We used enzyme-linked immunosorbent assay (ELSA) to determine six inflammatory factors in serum. PANSS was used to assess clinical symptoms and MCCB was used to assess the patients’ cognitive functions. 【Results】 ① Inflammatory factors: The serum levels of IL-1β, IL-4, IL-6 and IL-8 were significantly higher in case group than in control group (P<0.01). ② Cognitive functions: The scores of Trail Making Test, Hopkins Verbal Learning Test, Symbol Coding, Spatial Span, Brief Visuospatial Memory Test, Assessment Battery-Mazes, Category Fluency and Test-Managing Emotions of case group were significantly lower than those of control group (P<0.05). ③ Correlation between serum inflammatory factors and clinical symptoms: There was no correlation between serum inflammatory factors and psychiatric symptoms in schizophrenia. ④ Correlation between serum inflammatory factors and cognitive functions: The levels of IL-6 (rs=-0.33, P<0.05) and IL-8 (rs=-0.50, P<0.01) in case group were significantly negatively correlated with the scores of Space Scan test. 【Conclusion】 Patients with schizophrenia are presented with immune dysfunction, and the latter is correlated with cognitive impairments.