Quantitative calibration strategy as an essential issue in laser ablation ICP-MS plays an important role for the guarantee of analytical accuracy.In this study, uncertainties of reference values in current available glass certified reference materials (NIST, MPI-DING and USGS) as well as the matrix effect among them were systematically evaluated.The results illustrated that NIST610 was better than other reference materials from aspect of reference value uncertainty.The matrix effect among NIST, MPI-DING and USGS reference materials was insignificant under our experimental conditions.A quantification strategy based on two reference materials (NIST610 and StHs6/80-G) and normalization to 100% (w/w) was proposed to avoid the insufficiency of single reference material strategy, which suffered the very low content and large uncertainty for some elements.The comparision of ML3B-G results obtained from three quantification strategies (single reference material NIST610, single reference material StHs6/80-G and two refterence materials) illustrated that the proposed strategy improved the analytical accuracy.Three reference materials (BCR-2G, CGSG-2 and KL-2G) were quantified with the proposed strategy, and almost all data matched well with reference value, meanwhile the data reported here could supplement the reference value database.

The population of the very elderly is growing steeply with prolonged life expectancy.Age is an independent risk factor for stroke.Naturally,the very elderly become the high risky population.Hypertension is the most common and modifiable risk factor of stoke in the very elderly.Results of studies conducted during these 20 years have been reported to explore and investigate the relationship between stroke primary prevention and antihypertensive treatment,some of which are regarded as landmarks trials,providing essential evidences for blood pressure management in the very elderly.

ObjectiveTo investigate the clinical characteristics,3-month outcome and predictive factors in the very elderly patients with ischemic stroke.MethodsA total of 305 acute ischemic patients aged 65 years and over were enrolled in the study.They were divided into two subgroups by age:80 years old and over(n =78),65-79 years old(n =227).The clinical outcome was assessed by the modified Rankin Scale (mRS) on (90 ± 7 ) days after stroke,and categorized as good ( scoring 0-2 ) or poor( scoring 3-6) outcome.Results Significantly lower BMI [ ( 23.62 ± 4.92 ) kg/m2 vs ( 25.08 ± 3.69 ) kg/m2,P =0.005],lower frequency of dyslipidemia(56.41％ vs 71.13％,P =0.006) and alcohol intake (0％ vs 6.61％,P =0.043 )were found in the very elderly group.The rates of poor functional outcome in the ≥ 80years group and the 65-79 years old group were 56.41％ (44/76) and 41.40％ (94/224) respectively,with a P value of 0.015.Multivariate logistic regression analysis showed that higher National Institute of Health stroke scale (NItISS) total score (OR 1.48,95％ CI 1.19-1.83 ) and lower albumin level (OR 0.73,95 ％ CI 0.55 -0.95 ) were associated with poor outcome in ≥ 80 year old,whereas higher NIHSS total score ( OR 1.38,95％ CI 1.24-1.53) and complications during hospital stay ( OR 2.58,95％ CI 1.07-6.19 ) were predictive factors in the 65-79 years old group.ConclusionOur study suggests that NIHSS scores,albumin level and complications during hospitalization are useful predictive factors for the short-term poor functional outcome in the patients of ≥65 years old and ≥80 years old patients have a worse prognosis.

Objectives To explore the expression of HER4 and VEGF in NSCLC and elucidate the relationship between their expression and the characteristic of clinical pathology. Methods 82 cases of paraffin-embedded tissues from informative NSCLC were used to detect the expression of HER4 and VEGF by means of immunohistochemical assay. Results HER4 is overexpressed in 65;9%of NSCLC cases. The overexpression of HER4 is correlated with the lymph node metastasis and TNM staging. VEGF is expressed in 53.7%of NSCLC cases. The expression of VEGF is also correlated with the lymph node metastasis and TNM staging, and the expression of VEGF is correlated with the overexpression of HER4.Conclusions HER4 and VEGF are the protein to regulate the growth of NSCLC and it might be a good way for the treatment of NSCLC by suppressing the overexpression of HER4 and VEGF.

Objective: To explore the relationship between fathers′ nursing time and maternal parenting stress of children with autism spectrum disorder(ASD). Method: Mothers of 98 ASD children who were first diagnosed in the department of Child Health Care, Children′s Hospital of Fudan University during June 2015 to January 2016 were included in the ASD group, with mothers of 92 typical children from a Community Maternal and Child Health Hospital and a kindergarten in the control group. The evaluation of parenting stress, parents′ nursing time and other related factors were cross-sectionally analyzed. Interview was conducted with the following tools: Parental Stress Index-Short Form(PSI-SF)for maternal parenting stress, and self-made General Parenting Information Questionnaire for nursing time of both parents and other related factors. The relationships were analyzed by Multiple Linear Regression analysis and Wilcoxon Rank-Sum test. Result: Maternal parenting stress of ASD children had a significant negative correlation with father′s nursing time in total score of parenting stress, PCDI domain and PD domain (t=-2.76, -2.98, -2.79; P=0.007, 0.004, 0.006), within which PD domain also included family annual income and mothers′ nursing time (R²=0.22, 0.24, 0.25); while no such correlation was found in control group in terms of father′s nursing time(P=0.22, 0.42, 0.06). Wilcoxon Rank-Sum test showed that in 62 (63.3%) double-income ASD families and 72(78.3%) double-income typical families, there were significant differences between ASD fathers′ and ASD mothers′and typical fathers′nursing time(2.0(0.5, 2.1)vs. 3.5(2.4, 6.0)vs. 3.0(2.0, 4.7)h, t=-86.32、-49.65, all P<0.01). Conclusion Lack of fathers′ involvements was common in ASD children′s families. Increasing these fathers′ nursing time, as well as their enthusiasm and initiative in the family intervention could relieve maternal parenting stress and improve the intervention pattern of ASD children.

BACKGROUND: There have been many significant advances in the diagnosis and treatment of non-small cell lung cancer (NSCLC). However, the mechanism underlying the progression of NSCLC is still not clear. Plant homodomain finger-like domain-containing protein 5A (PHF5A) plays an important role in processes of chromatin remodeling, morphological development of tissues and organs and maintenance of stem cell pluripotency. This study aims to investigate the role of PHF5A in the proliferation and migration of NSCLC. METHODS: A549 and PC-9 PHF5A overexpression cell lines were constructed. PHF5A expression was decreased in H292 and H1299 cells by using siRNA. Flow cytometry was used to detect the cell cycle. MTT assay and clone formation assay were used to examine the proliferative ability of NSCLC, while migration assay and wound healing assay were performed to evaluate the ability of migration. Western blot analysis was used to measure the expressions of PI3K, p-AKT and the associated downstream factors. RESULTS: Up-regulation of PHF5A in A549 and PC-9 cells increased the proliferation rate, while down-regulation of PHF5A in H292 and H1299 cells inhibited the proliferation rate at 24 h, 48 h and 72 h (P<0.05). The metastatic ability was elevated in the PHF5A-overexpresion groups, while reduced in the PHF5A-down-regulation group (P<0.05). In addition, reduced expression of PHF5A induced cell cycle arrest at G1/S phase (P<0.05). Furthermore, decreased expression of PHF5A reduced the expression levels of PI3K, phosphorylation of AKT, c-Myc (P<0.05) and elevated the expression of p21 (P<0.05). CONCLUSIONS These results demonstrated that PHF5A may play an important role in progression of NSCLC by regulating the PI3K/AKT signaling pathway.
Humans ; Carcinoma, Non-Small-Cell Lung/pathology* ; Lung Neoplasms/pathology* ; Proto-Oncogene Proteins c-akt/metabolism* ; Phosphatidylinositol 3-Kinases/metabolism* ; Cell Line, Tumor ; Cell Proliferation/genetics* ; Cell Movement/genetics* ; Gene Expression Regulation, Neoplastic ; Trans-Activators/genetics* ; RNA-Binding Proteins/metabolism*

Objective: To understand the epidemiological characteristics of outbreaks and analyze the genetic characteristics of the whole genome of influenza H3N2 virus among avian-human-swine, and to elaborate the source of influenza virus. Methods: The epidemic information was collected using the case investigation, the pharyngeal swab samples from influenza-like-illness cases were detected by real-time PCR and virus isolation. The phylogeny and molecular features of whole-genome were analyzed with EditSeq and MEGA 5.05 software. Results: The prevalence rate of this outbreak was 34.88%, 15 samples of throat swabs were collected, the positive rate of nucleic acid detection was 73.33%, 5 strains of seasonal influenza A (H3N2) influenza viruses were isolated. The phylogenetic analysis showed the eight gene segments of the isolated influenza viruses belonged to the same cluster with 2015-2016 influenza vaccine strain A/Switzerland/9715293/2013(H3N2), and no recombination was found. Compared with vaccine strain, 14 variant amino acids of protein of HA were identified, and 8 of them were located in antigenic sites. All strains were sensitive to neuraminidase inhibitors while they showed resistance to blockers of M2 ion channel. The glycosylation sites analysis showed that two new glycosylation sites NRT151-153 and NAT245-247were added. Conclusions The outbreak was caused by seasonal influenza A (H3N2) virus which had an antigenic drift and no genetic avian-human-swine recombination was found.