Objective To investigate the role of myeloid dendritic cells(mDC)in the pathogenesis of ankylosing spondylitis (AS),and to study the mechanism of tumour necrosis factor (TNF)-α blocker on the treatment of AS by counting the number of mDC before and after the treatment.Methods Peripheral blood from 21 AS patients treated with 50 mg rhTNFR-Fc and 15 AS patients treated with placebo were investigated at week 0,week 2 and week 6 in a randomized,double-blind,placebo-controlled trial.Three-color flow cytometry analysis was used to investigate the change of the number of mDC before and after the treatment.And their correlation with the clinical parameters was analyzed.Results MHC Class Ⅰ positive mDC(Lin-/CD11c+/HLA-abc+)in AS patients was slightly less than in healthy controls (not statistically significant).No significant change in MHC Class Ⅰ mDC number was observed after drug treatment.The number of MHC Class Ⅱ mDC cells was not correlated with clinical parameters.Conclusion The treatment with rhTNFR-Fc in AS induces a significant upregnlation of MHC-Ⅱ DC.

Arapidscreeningmethodforthedeterminationofcarbamatepesticides(CBPs)residuesin vegetables by measuring acetylcholinesterase ( AChE ) inhibition rate using electrospray ionization mass spectrometry ( ESI-MS ) has been established. After pretreatment by QuEChERS method, sample solution reacts with AChE using acetylthiocholine as substrate. AChE inhibition rate was calculated by determination of the conversion of substrate to product ( thiocholine) using ESI-MS. The temperature, time and concentration conditions of enzymatic reactions have been optimized. The relationship between the concentration of 10 kinds of common CBPs and AChE inhibition rate was researched. Matrix effects of real vegetables were studied. The limit of detection ( LOD) , which was measured by 3 times of enzyme inhibition rate of pesticide-free vegetable samples, was 0. 01-0. 05 mg/kg. The results showed that the method was better than the current national standard method of china for rapid screening of pesticide residues and fully meet the requirements of maximum residue limits( MRL) for pesticides in food of national food safety standard. False positive results were avoided effectively due to its good ability of resistance matrix interference. The reliability was proved by analyzing vegetables with liquid chromatography-tandem mass spectrometry. The method is simple, rapid, sensitive, reliable, and can be used for the rapid, high-throughput screening of CBPs in vegetables.

Objective To observe the effect of recombinant human mannose-binding lectin (RhMBL)on the expression of Bcl-2 and p53 gene in thyroid cancer cell lines.Methods Two kinds of thyroid cancer cell lines( K1 cells and FTC-133 cells) were dealed with different concentrations of rhMBL( control group:0 mg/L;experimental group:1 mg/L),then total protein was extracted to detect the expression of Bcl-2 and p53 by Western Blot.Results The expression level of p53 and Bcl-2 were observed to be obviously down-regulated after incubation with RhMBL.( 1 ) K1 cells:There was significant difference on the expression of p53 and Bcl-2 between control group and experimental group [ p53:( 1.51 ± 0.29) vs (0.74 ±0.07),t =7.63 ; P =0.040;Bcl-2:( 1.20 ± 0.07 ) vs ( 0.59 ± 0.04 ),t =6.28,P =0.001 ] ; ( 2 ) FTC-133 cells:there was also significant difference on the expression of p53 and Bcl-2 between control group and experimental group [ p53:( 0.88 ±0.14) vs(0.35 ±0.08),t =3.29,P=0.003; Bcl-2:(1.07±0.11) vs (0.33 ±0.06),t =5.73,P=0.000 ].Conclusion Bcl-2 and p53 may play an important role on the induction of thyroid cancer cell apoptosis and inhibition its proliferation by RhMBL.

Objective To investigate the probability of verifying the X-knife treatment plan by the radiotherapy simulator,and to analyze and report the errors of the X-knife treatment plan for reference.Methods The radiation fields of the X-knife treatment plan were observed in the whole simulating treatment process by the radiotherapy simulator.Results The error rate of X-knife treatment plan were in the simulating treatment process was 5.9%(22/372).Among the errors,3 cases of X-knife plans were found in the simulating treatment process,and the errors of isocenter in Z direction were 10cm.Conclusion This is a special error of X-knife TPS,which deserves more attention in stereotactic radiotherapy.

A high throughput screening method based on QuEChERS purification and stable isotope dilution-liquid chromatography coupled to high resolution time-of-flight mass spectrometry was developed for the simultaneous rapid determination of 86 kinds of glucocorticoids (GCs) in cosmetics.The analytes were extracted by acetonitrile, and then the extracts were purified using an improved QuEChERS method.The chromatographic separation was performed on a novel multiple chromatographic retention mechanisms column of Poroshell 120 PFP (100 mm × 2.1 mm, 2.7 μm) with gradient elution using 0.2% (V/V) acetic acid and acetonitrile as mobile phase.The accurate mass database of parent ions and mass spectra library of fragment ions of 86 GCs were established under positive ionization mode with electrospray ionization source.Based on the method described above, the qualitative identifications of the 86 GCs were accomplished without the contrast of standard substances.The results demonstrated that the linear range of this method was from 2 μg/L to 200 μg/L with good correlation coefficients of R2>0.99.The average recoveries of the 86 GCs ranged from 66.2% to 112.8%, and the relative standard deviation (RSDs) was 4.6%-13.9% at three different spiked levels.The limit of detection (LOD) and quantification (LOQ) were 0.006-0.015 mg/kg and 0.02-0.05 mg/kg, respectively.The method is simple, efficient, reliable and accurate, and is suitable for high throughput screening of 86 GCs added illegally in cosmetics.

Objective To probe into the pathogenesis of gestational diabetes mellitus (GDM) by studying expression of TLR4 acetylation in peripheral blood mononuclear cells of gravida with GDM as well as its role in TLR4 inflammatory pathway. Methods 30 normal gravidas and 30 gravidas with GDM were enrolled in the study, 15 mL peripheral blood from every participant was collected for extraction of mononuclear cells via density gradient centrifugation and culturing in vitro by LPS. The expression of TLR4 acetylation in the mononuclear cells was detected using immunoprecipitation and western blot and the levels of inflammatory cytokines, TNF-α, IL-1 and IL-10 in the supernatant were detected by ELISA. Results TLR4 acetylation appeared positive in GDM group, and negative in the control group. After the LPS intervention, the degree of TLR4 acetylation was enhanced significantly and the latter was significantly higher than those of the GDM group and the normal + Lps group (P < 0.05). The differences in the levels of inflammatory cytokines, TNF-α, IL-1, IL-10, were statistically significant (P < 0.05). Conclusion TLR4 acetylation exists in mononuclear cells of gravida with GDM, and mediates the release of inflammatory cytokines by influencing the activation of TLR4 inflammatory pathobenesis, which contributes to the promoted antiinflammatory - proinflammatory imbalance in gravidas. In this way, it is involved in the growth of GDM.

OBJECTIVE：To compare the chemical compo sition difference in methanol and petroleum ether fraction from Curcuma longa of different habitats. METHODS ：The ultrasonic method was used to extract C. longa from 7 defferent producingareas（S1-S7），and methanol and petroleum ether fraction were obtained and calculated yield. The curcumin compounds in methanol fraction were determined by LC-MS ；The chemical components in petroleum ether fraction were analyzed by GC-MS ， and the relative percentage content was determined by peak area normalization method after determining its structure by comparing NIST 2005 standard mass spectra and Wiley 275 standard mass spectra. SPSS 25.0 software was used for principle component analysis（PCA）and cluster analysis of relative percentage content of common components in petroleum ether fraction from C. longa of different habitats. At the same time ，the influence of latitude of the habitats on the content of total tumerone （by tumerone and ar-tumerone ）was analyzed. RESULTS ：The yield of methanol fraction were 1.35％-8.90％ from C. longa of 7 habitats；the yield of petroleum ether fraction were 0.81％-4.90％，which were the highest in C. longa from Longyan of Fujian Province. There was no significant difference in the relative content of curcumin compounds（reference peak area ）from S 1，S3-S7，which was in descending order as follows as curcumin ＞desmethoxycurcumin＞bisdemethoxycurcumin. There was slightly different in curcumin compounds of C. longa from S 2，mainly manifesting as the content of bisdemethoxycurcumin was higher than that from other producing areas. Totally 48 chemical compositions were identified from petroleum ether fraction in C. longa from different habitats ， mainly being sesquiterpenoids and monoterpenoids. 23，10，15，18，11，14，15 chemical compositions were identified from S1-S7，accounting for 94.49％，96.09％，95.66％，98.98％，99.24％，89.05％ and 97.27％. There were 4 common compositions in C. longa from different habitats ，which were tumerone （17.90％-43.07％），ar-tumerone（6.97％-33.66％），（6R，7R）-bisabolone （1.60％-4.28％），curlone（6.80％-20.63％）. PCA analysis showed that accumulative contribution rate of former 6 principle components was 100％. Cluster analysis showed that S1，S2， S6 was clustered into a category ，respecrively；and others intoa category. Total content of total tumerone decreased first and then increased as the increase of latitude ，which was the highest in Mianyang of Sichuan province （64.28％）and the lowest in Zhangzhou of Fujian province （26.92％）. CONCLUSIONS ： There are difference in composition and content of methanol and petroleum ether fractions in C. longa from different habitats.

Objective To understand the current status and influencing factors of patient perception for humanistic care in China hospitals,and to provide a basis for developing nursing humanistic care measures and improving the quality of nursing humanistic care services.Methods A total of 30,099 outpatients and inpatients from 107 hospitals in 30 provinces(autonomous regions and municipalities)from July to August 2022 as survey subjects.A general information questionnaire and the Relational Caring Questionnaire-Patient Form were used for a cross-sectional survey,and a single-factor analysis was used to analyze the influencing factors of patient relationship care.Results Finally,29 108 valid questionnaires were collected,and the effective questionnaire recovery rate was 96.7％.The patient evaluation of relationship care was(65.72±8.61)points.Single-factor analysis showed that gender,age,marital status,children's situation,education level,occupation,place of residence,average family income,medical insurance type,visiting department,and location of the visiting hospital,and whether or not surgery were influencing factors of patient relationship care(P＜0.05).Conclusion The evaluation score of caregiver-patient relationship care among Chinese hospital patients is above average,but there is still room for improvement in western and rural regions,seriously ill and outpatient patients,low-income and low-medical insurance reimbursement populations,and non-surgical patients.Medical institutions at all levels should optimize and improve nursing humanistic care services based on influencing factors,and further enhance patients'perception of nursing humanistic care.

Objective: To evaluate amniotic fluid cell inheritance and re-culture in cases of amniotic fluid with abnormal traits. Methods: From January 2014 to December 2018, 15 cases of amniotic fluid with abnormal traits in the First Affiliated Hospital of Anhui Medical University were selected in amniocentesis.Amniotic fluid cells were routinely seeded and cultured for 10 days, then subcultured into other culture bottles.The number of cells and karyotyping after harvesting were counted. Results: Seven of 15 cases of amniotic fluid color were slightly darker, 3 cases were pink as water washed meat, and 5 cases were light brown or brown.The average number of cells in original bottles was (2.40±5.87)×10⁵/mL, the average number of cells in inheritance bottles was (2.76±0.64)×10⁶/mL.All 15 samples in the cell inheritance bottles got satisfactory results in cell karyotype analysis. Conclusion Amniotic fluid cell inheritance and re-culture can increase the number of cells in amniotic fluid cell culture and improve the success rate of karyotyping.

OBJECTIVESince 1986, the reference of birth weight for gestational age has not been updated. The aim of this study was to set up Chinese neonatal network to investigate the current situation of birth weight in China, especially preterm birth weight, to develop the new reference for birth weight for gestational age and birth weight curve.

METHODA nationwide neonatology network was established in China. This survey was carried out in 63 hospitals of 23 provinces, municipalities and autonomous regions. We continuously collected the information of live births in participating hospitals during the study period of 2011-2014. Data describing birth weight and gestational age were collected prospectively. Newborn's birth weight was measured by electronic scale within 2 hours after birth when baby was undressed. The evaluation of gestational age was based on the combination of mother's last menstrual period, ultrasound in first trimester and gestational age estimation by gestational age scoring system.

STATISTICAL ANALYSISthe growth curve was drawn by using LMSP method, which was conducted in GAMLSS 1.9-4 software package in R software 2.11.1.

RESULTA total of 159 334 newborn infants were enrolled in this study. There were 84 447 male and 74 907 female. The mean birth weight was (3 232 ± 555) g, the mean birth weight of male newborn was (3 271 ± 576) g, the mean weight of female newborn was (3 188 ± 528) g. The test of the variables' distribution suggested that the distribution of gestational age and birth weight did not fit the normal distribution, the optimal distribution for them was BCT distribution. The Q-Q plot test and worm plot test suggested that this curve fitted the distribution optimally. The male and female neonatal birth weight curve was developed using the same method.

CONCLUSIONUsing GAMLSS method to establish nationwide neonatal birth weight curve, and the first time to update the birth weight reference in recent 28 years.