Fetal intrauterine growth restriction is one of the common diseases in the perinatal period,which not only increases the child morbidity and mortality in the perinatal period,affecting the long-term development of the nervous system,and can make the risk of adult obesity,hypertension,type Ⅱ diabetes increased significantly.A number of studies suggest that the down-regulation of A amino acid transporter expression is closely associated with intrauterine growth restriction.The down-regulation of A amino acid transporter expression may be an important cause of intrauterine growth restriction.

With the development of diagnostic techniques, the diagnosis rate of adrenal incidental tumors is increasing. Disease related hormones can be detected to evaluate the endocrine function of tumors for diagnosis and treatment, especially by liquid chromatography-tandem mass spectrometry (LC-MS/MS). LC-MS/MS has the advantages of high sensitivity, specificity and multi-component, and has become the gold standard method for the detection of small molecule hormones.Mass spectrometry has advantages in the detection of glucocorticoids, halo corticoids, sex hormones and catecholamine metabolites.LC-MS/MS still has some limitations in clinical practice, which are manifested as low degree of automation and lack of standardization.After the improvement of the clinical application of LC-MS/MS and the establishment of reference scope, the clinical judgment on the endocrine function of AI will be more standardized.

In recent years, with the improvement of medical level, central catheter placement is widely used in newborns, especially in infants of very low birth weight and other critical newborns.It effectively reduces the damage of frequent venipuncture and stimulant drugs on blood vessels of children.However, the establishment of neonatal catheter access is closely related to mechanical injury, infection and thrombosis.The use of central catheters is the most common cause of thrombosis in newborns and infants.At present, there are few related reports, and there is no management standard for catheter-related thrombosis in China.This review analyzed the risk factors, diagnosis, prevention and treatment of neonatal catheter-related thrombosis.

Objective:To summarize the clinical features of neonatal lupus erythematosus(NLE) and improve the understanding of the disease.Methods:The clinical data of 17 NLE neonates admitted to the First Affiliated Hospital of Zhengzhou University from February 2015 to September 2021 were retrospectively analyzed, and relevant literatures were reviewed.Results:Of the 17 patients, nine were boys and eight were girls.There were 13 cases of skin damage and eight cases of heart damage, including four cases of atrioventricular block, one case of QT interval prolongation complicated with atrial premature beat, three cases of atrial septal defect, one case of ventricular septal defect, two cases of patent ductus arteriosus, one case of pericardial effusion, one case of pulmonary hypertension, and two cases of cardiac insufficiency.One case developed skin damage and heart block at the same time.There were 15 patients with blood system damage and 11 patients with hepatobiliary system damage.Among the serological indicators, 17 cases were positive for anti-ANA antibody, 12 cases were positive for anti-SSA-60, 13 cases were positive for anti-SSA-52, seven cases were positive for SSB, one case was positive for Sm, and three cases were positive for RNP.Among them, four neonates with atrioventricular block were positive for anti-SSA-60 and anti-SSA-52.Most of the patients with skin lesions had good prognosis, and only one patient had brown scars, one neonate with second-degree type Ⅱ atrioventricular block and one neonate with QT interval prolongation combined with premature atrial contractions had normal electrocardiograms.Additionally, two patients still had third-degree atrioventricular block, and the other one patient was installed with a pacemaker at one year and two months, and left spastic cerebral palsy.A total of 16 mothers had serological tests, among which ten cases had abnormal connective tissue antibodies before delivery and six cases had abnormal connective tissue antibodies after delivery.Conclusion:There is no significant gender difference in NLE, third-degree atrioventricular block is difficult to reverse, and most patients with extracardiac damage have a good prognosis.

Objective:To develop the screening checklist of brief interview for autism disorder suitable for Chinese children and evaluate its reliability and validity.Methods:Based on existed research results and diagnostic criteria for autism spectrum disorder of DSM-5, the screening checklist of brief interview for autism spectrum disorder(SCAD) was developed. A sample of 238 children were selected for investigation and 28 of them were retested for test-retest reliability with 2-4 weeks interval. Cronbach's α coefficient, split-half correlation coefficient, test-retest reliability, and evaluator consistency were used to test the reliability of the scale. Content validity, construct validity and empirical validity were used to test the validity of the scale.All statistical analysis were conducted by SPSS 22.0 and AMOS 17.0.Results:The SCAD contains two components and six dimensions, with a total of 25 items. The Cronbach's α coefficient was 0.936 for the total scale and were 0.938, 0.771 for the two components. The split-half coefficient for the total scale and the two components were 0.962, 0.938 and 0.794. The test-retest reliability for the total scale and the two components were 0.806, 0.795 and 0.766. The Kendall coefficient for the total scale and the two components were 0.968, 0.982 and 0.950. The SCAD item-level content validity index (I-CVI) ranged from 0.66 to 0.98 and the Kappa value ranged from 0.66 to 0.98. The scale-level content validity S-CVI/UA and S-CVI/Ave were 0.89 and 0.94. The correlations between SCAD and calibration tests such as ABC, CARS and M-CHAT were 0.54, 0.53 and 0.87, and the correlation coefficients with the M-CHAT-R/F between the two components were 0.87 and 0.76 respectively (both P<0.01). The result of CFA demonstrated that the model fitted the data with well construct validity(χ 2/ df=0.910, RMR=0.049, AGFI=0.974, RMSEA=0.010, PNFI=0.530, PCFI=0.533, NFI=0.994, RFI=0.988, CFI=1.000). The correlation coefficient of the two components was 0.88 and that with the total scale were 0.97 and 0.90, each dimensions with the total scale ranged from 0.72 to 0.93. Conclusion:The SCAD has a good reliability and validity, and it can be used as a clinical screening tool for children with autism spectrum disorder.

Objective:To establish and validate a reliable and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the detection of 12 ceramides in human plasma.Methods:From October 2021 to October 2022, 438 apparently healthy individuals were enrolled in the Affiliated Hospitals of Zunyi Medical University for reference intervals of 12 ceramides in this population. Plasma samples were collected, and separated using the ACQUITY UPLC BEH C18 (2.1×50 mm, 1.7 μm) column, deuterated isotopes were used as internal standards. The mobile phase is water (containing 0.1% formic acid) and isopropanol: acetonitrile (1∶1, v/v, containing 0.1% formic acid) at a flow rate of 0.4 ml/min with gradient elution. The detection method was established using the Qlife Lab 9000 Plus triple quadrupole mass spectrometer. The performance of the method was evaluated in terms of linearity, the lower limit of quantification, precision, recovery, and stability.Results:The method passed the performance evaluation in terms of linearity, the lower limit of quantification, recovery, precision, and stability. The intra-and inter-batch precision of the 12 ceramides ranged from 1.3% to 14.3%, the correctness was verified by spiked recovery experiments, and the recoveries ranged from 91.9% to 111.0%. The lower limit of quantification ranged from 0.001 to 0.100 μmol/L. Standard curve showed good linearity (correlation coefficient r>0.990). Stability tests showed that the 12 ceramides were stable in the biological matrix and after processing under different conditions for a specified period of time. The corresponding biological reference intervals were established for each of the 12 ceramides: 0.103-0.326 μmol/L for Cer(d18∶1/16∶0), 0.018-0.098 μmol/L for Cer(d18∶1/18∶0), 0.933-3.919 μmol/L for Cer(d18∶1/24∶0), 0.243-1.072 μmol/L for Cer(d18∶1/24∶1), 0.001-0.007 μmol/L for Cer(d18∶1/14∶0), 0.022-0.095 μmol/L for Cer(d18∶1/20∶0), 0.185-0.835 μmol/L for Cer(d18∶1/22∶0), 0.003-0.022 μmol/L for Cer(d18∶0/16∶0), 0.001-0.016 μmol/L for Cer(d18∶0/18∶0), 0.017-0.156 μmol/L for Cer(d18∶0/24∶0), 0.008-0.074 μmol/L for Cer(d18∶0/24∶1), and 0.106-0.721 μmol/L for LacCer(d18∶1/24∶1). Conclusion:Our study shows that the newly established LC-MS/MS method for the determination of 12 ceramides in human plasma is reliable, and suitable for clinical application.

Objective:To establish the normal reference value of lumbar bone mineral density (BMD) under quantitative CT (QCT) in Chinese healthy adult females and to explore the regional differences.Methods:Total of 35 431 healthy women who met the inclusion criteria of Chinese health quantitative CT big data program were selected in this study. The BMD of the central plane of L 1 and L 2 vertebrae was measured by Mindways′s QCT system, and the mean value was taken. One-way analysis of variance was used to compare the BMD differences of lumbar vertebrae in women of different ages and regions. The subjects were grouped by an age interval of 10 years, and the level of BMD in different regions of the same age group were compaired. Results:The peak BMD of Chinese healthy adult women appeared in the age group of 20-29 years (Northeast China(183.01±24.58) mg/cm 3, North China (188.93±24.80) mg/cm 3, East China (187.54±27.71) mg/cm 3, South China (186.22±33.72) mg/cm 3, Central China (176.33±24.91) mg/cm 3, Southwest China(182.25±28.00) mg/cm 3), and then it decreased with age. The level of BMD in different regions decreased with the age. Before the age of 70 years, BMD in Central and Southwest China was always at a low level((176.23±24.91) to (90.38±28.12) mg/cm 3, 182.25±28.00 to (88.55±25.68) mg/cm 3), lower than those in Northeast China ((183.01±24.58) to (99.69±27.85) mg/cm 3), North China ((188.93±24.80) to (95.89±26.12) mg/cm 3), East China ((187.54±27.71) to (95.65±27.86) mg/cm 3). After 70 years of age, BMD tended to be the same in different regions ( P>0.05). The BMD values in Central China and Southwest China were similar in the age group of 40-60 years ( P>0.05). The BMD values in the health adult femles in the age group of 60 years in different regions of Chinawere all lower than those of bone mass abnormality (all P<0.05). The detection rate of osteoporosis in females over 50 years was the highest in Southwest China (25.65%) and it was the lowest in North China (17.30%). Conclusions:This study establishes reference values of BMD under QCT in healthy Chinese women, which can be used as a reference basis for identifying women with low BMD who are at risk of osteoporosis. The BMD value is the lowest in Southwest China and the highest in South China.

Lipid Droplets/metabolism* ; Bacteria ; Lipid Metabolism