The magnetic molecularly imprinted polymers (MMIPs), based on the surface of magnetic nanoparticles being modified by surface grafting, have been successfully synthesized, with dibutyl phthalate (DBP) as template molecule, ethylene glycol dimethacrylate (EGDMA) as cross-linking agent and azobisisobutyronitrile (AIBN) as initiator. Scanning electron microscopy (SEM), transmission electron microscope (TEM), and elemental analysis were employed to characterize the MMIPs. The structure and magnetic properties of the MMIPs were investigated by means of X-ray diffraction and vibrating sample magnetometer. The BET surface area shows that MMIPs is 380 m2/g and MNIPs is 324 m2/g. A series of static adsorption experiments were conducted to analyze its adsorption performance, which followed pseudo-second-order model by the kinetic analysis with correlation coefficient (R2) 0.9797, and Sips equation with correlation coefficient (R2) 0.999 by the isothermal analysis. The imprinting factors of diallyl phthalate (DAP), DBP and di-2-ethylhexyl phthalate (DEHP) were 1.53, 2.21 and 1.39 respectively, showing that MMIPs had better recognition performance for DBP. The experiment of regeneration recycles with five times showed the regeneration ability of DBP was only reduced by 12.3％.

BACKGROUND:Adipose-derived mesenchymal stem cells are gaining widespread interest in the Achil es tendon tissue engineering and regeneration, and an enabling environment (oxygen concentration) for cellinduction and differentiation is particularly necessary.
OBJECTIVE:To co-culture adipose-derived mesenchymal stem cells with primary tenocytes in standard culture condition (20%O 2 tension) and in an atmosphere of reduced oxygen (2%O 2 tension) in order to determine whether the two conditions differ in their effect on tenogenic differentiation.
METHODS:Tenocytes were isolated via serial expansion in culture from several Sprague-Dawley rats’ Achil es tendons. Adipose-derived mesenchymal stem cells were purchased. After one passage, adipose-derived mesenchymal stem cells were indirectly co-cultured with tenocytes in standard culture condition (20%O 2 tension) and in an atmosphere of reduced oxygen (2%O 2 tension). Col agen 1, col agen 3, Tenomodulin, Thrombospondin-4, Scleraxis levels were compared for each culture condition at 7, 14 and 21 days fol owing co-culturing. Immunofluorescence staining was performed to evaluate production of col agen 1 and Thrombospondin-4.
RESULTS AND CONCLUSION:Fol owing indirect co-culturing, hypoxic differentiated adipose-derived mesenchymal stem cells expressed higher levels of tendon-related genes and proteins than normoxic controls, which suggest that oxygen levels can significantly affect tenogenic differentiation, and hypoxia is advantageous for efficient differentiation of adipose-derived mesenchymal stem cells in vitro for tendon tissue engineering.

This study aimed at exploring the effects of Guttiferone K (GUTK),a compound isolated from G.yunnanensis,on inhibiting the proliferation of pancreatic cancer cells both in vitro and in vivo.MTT assay was used to detect the inhibitory effects of GUTK on the proliferation of five human pancreatic cancer cell lines.Western blot was adopted to detect the apoptosis-related protein expressions of Caspase-3,poly adenosinediphosphate-ribose polymerase (PARP) and Bcl-xL.For in vivo study,the human pancreatic cancer cell MIA PaCa-2 was orthotopically injected into the pancreatic tail of the orthotopic mice.One week later,GUTK was administered by intraperitoneal (i.p.) injection every other day for 4 weeks.The volume and weight of the tumor tissue were measured.The protein expression level of cleaved caspase-3 in tumor tissue of all the groups was quantified by immunohistochemistry.As a result,it was found that GUTK effectively inhibited the proliferation of the five human pancreatic cancer cell lines at a low concentration.GUTK induced caspase-related apoptosis by triggering a series of events in MIA PaCa-2 cells including cleaved Caspase-3 and PARP activation,Bcl-xL down-regulation,and eventually cell death in a time and dose dependent manner.Furthermore,in vivo study revealed that intraperitoneal injection of GUTK significantly suppressed the growth of pancreatic cancer cells in the orthotopic mouse models,and the protein level of cleaved caspase-3 was increased in the GUTK and gemcitabine treated groups.It was concluded that GUTK induced apoptosis in human pancreatic cancer both in vitro and in vivo,and was potential to develop into a clinical anticancer agent.

Objective To compare the effect of novomix30 and metformin in treatment of diabetes mellitus combined with osteoporosis.Methods 117 patients diagnosed as type 2 diabetes mellitus (T2DM) combined with osteoporosis were collected from Sep.2013 to Apr.2017 in our hospital.They were divided into two groups:metformin group (n=53),and novomix group (n=64) according to different therapies.General information of the two groups were comparable.The patients of metformin group reveived calcium,alendronate and metformin.The patients of novomix group received calcium,alendronate and novomix.The lumbar bone mineral density (BMD),greater trochanter BMD,femoral neck BMD,Ward triangle BMD,the serum levels of BGP,alkaline phosphatase (ALP),β-cross-linked C-telopeptide of type Ⅰ collagen(β-CTX),1,25-(OH)2D3,the levels of fasting plasma glucose (FPG),2h plasma glucose (2h PG),HBA1c and adverse reactions were recorded during the treatment.Results The lumbar BMD,greater trochanter BMD,femoral neck BMD,Ward triangle BMD of novomix group were higher than those of metformin group after treatment (P＜0.05).The serum β-CTX levels of novomix group were lower than those of metformin group after treatment (P＜0.05),while the serum BGP,ALP,1,25-(OH)2D3 levels of novomix group were higher than those of metformin group after treatment (P＜0.05).The levels of FPG,2hPG,HBA1c had no significant difference between the two groups after treatment (P＞0.05).The adverse reactions rate of metformin group and novomix group was 28.30％ and 25.00％ respectively,and there was no significant difference between the two groups (P＞0.05).Conclusion Novomix30 can significantly improve bone metabolism level for patients combined with T2DM and osteoporosis,maintain bone remodeling balance,reduce bone loss,and improve BMD,which is worthy to be promoted.

Objective: To investigate the health effects of air pollution on elementary school students with the indicator of absenteeism caused by respiratory symptoms and diseases, and to provide a reference for improving their physical health. Methods: Absenteeism, air pollutants, and meteorological data during Sep. 2015 to Jun. 2017 in Pudong, Shanghai were collected. Generalized additive model was used to estimate the effects of air pollution on students’ absenteeism caused by respiratory symptom and diseases, time trends, day of week and meteorological factors were controlled. Results: Totally 47 723 person-days of elementary school students’ absenteeism caused by respiratory symptoms and diseases were recorded during Sep.2015 to Jun. 2016 in Pudong, Shanghai, and the absenteeism rate was 0.07%. The PM2.5 concentration on lag0 and SO2 concentration on lag2 showed the most significant effects, the elementary school students’ absenteeism raised for 1.43% (95%CI=0.25%~2.62%)and 6.79% (95%CI=0.25%~13.32%) respectively with every 10 μg/m3 increment of PM2.5 and SO2. Conclusion Air pollution in Pudong new area have made a influence on the elementary school student’s respiratory symptoms and absenteeism, and the prevention work of air pollution should be strenghthened.

Objective: To know the incidence of heat stroke and explore it's prediction model in Pudong New Area of Shanghai. Methods: An epidemiological investigation was conducted on heat stroke cases in Pudong New Area of Shanghai from 2013 to 2017. Daily temperature data during this period were collected to explore it’s influence. Results: 246 heat stroke cases were reported and investigated, 70.3% (173/246) of them were male. 170 cases are severe heat stroke, accounting for 69.1%. 28 patients died, accounting for 11.4% of all cases of heat stroke, and 16.5% (28/170) of severe heat stroke cases. Thermoplegia (56.5%, 96/170) was the most popular type among severe heat stroke cases. Heat prostration, heat cramps and mixed type account for 17.1% (29/170) , 12.4% (21/170) and 14.0% (24/170) respectively. Scatter plot and linear regression demonstrated that there was a significant linear relation between number of high temperature days and number of heat stroke cases (P<0.01) . And the prediction model is: Predictive number of annual heat stroke cases=β×Number of annual high temperature days+Intercept. Leave-one-out cross validation result shows that the predictive number of annual heat stroke cases from 2013 to 2017 were 85.7%, 90.9%, 83.3%, 91.9 and 84.3% respectively. Conclusion There was a significant linear relation between number of high temperature days and number of heat stroke cases in Pudong New Area. The related work arrangement for heat stroke prevention could be well planed according to the prediction model.

Objective:To survey the status quo and influencing factors of contracted family doctor pay services in urban communities of Suzhou city.Methods:This study was a cross-sectional study. A questionnaire survey on the status quo and influencing factors of contracted family doctor pay services was conducted from July to October 2022 among 750 residents from 40 communities of 4 subdistricts in Suzhou Gusu District, selected by stratified random sampling method. A self-designed questionnaire was used for the survey, which included demographic information, status quo of pay services among residents and factors influencing the service contracting. Chi-square test and binary logistic regression were used to analyze the influencing factors of contracted family doctor pay services.Results:A total of 750 questionnaires were distributed, with 720 valid ones returned at a recovery rate of 96.0%. Among the 720 residents, 370 (51.4%) were female, and 300 (41.7%) were between the age of 35 and 60 years old. There were 71 residents who had contracted pay services with a contracting rate of 9.9% (71/720), and the renewal rate was 80.3% (57/71). The top 3 reasons for signing the contract were health guidance (67.6%, 48/71), medical counselling (63.4%, 45/71) and 3 free consultations (57.7%, 41/71). The top 3 reasons for not signing a contract were not needing services (49.9%, 324/649), not knowing about contracted services (41.9%, 272/649) and rarely visiting the community health service center (25.6%, 166/649). Age ( χ2=21.072), marital status ( χ2=10.969), knowing the family doctor team ( χ2=145.954), knowing the family doctor contract system ( χ2=133.981), knowing the content and the rights of the contracted services ( χ2=132.905), using primary medical institutions as first choice for common and chronic diseases ( χ2=13.532), multiple comorbid chronic diseases ( χ2=30.024), being agreed by family members ( χ2=46.258), signing contract in family members ( χ2=108.833) or relatives and friends ( χ2=47.492), and experience in community health service centers ( χ2=26.116) were significantly associated with the contract signing (all P<0.05). Logistic regression analysis showed that knowing family doctor team well ( OR=23.13,95% CI:5.05-105.97) or very well( OR=95.28,95% CI: 10.71-847.68); having ≥3 chronic diseases compared to no chronic diseases ( OR=5.60, 95% CI: 1.88-16.75, P<0.05); contracting agreed by family members compared to not agreed ( OR=2.66, 95% CI: 1.03-6.84, P<0.05); signing contract in family members compared to not signing ( OR=4.42, 95% CI:2.05-9.55, P<0.05) were independent influencing factors of signing contract of family doctor pay services. Conclusions:The rate of contracted of family doctor pay services in Gusu District of Suzhou City is relatively low. Knowing the family doctor team, having multiple comorbid chronic diseases, agreement among family members, and signing contract in family members are influencing factors of contracted family doctor pay services.

Molecular typing of leukemia is the basis of risk assessment and treatment options. NUTM1 gene (15q14) rearrangement is a novel molecular type of acute B lymphoblastic leukemia (B-ALL), which is mainly found in children (≥1 year old) and infants (< 1 year old). The number of patients is slightly more in children than infants. However, in infantile ALL, NUTM1 rearrangement is the second most common molecular abnormality. These children respond well to conventional chemotherapy regimens and with a good prognosis. The number of leukemia patients with NUTM1 gene rearrangement is still small, and there is no relevant study or case report in China. NUT protein encoded by NUTM1 gene is a chromatin regulator, which is related to histone acetylation regulation and chromatin remodeling. This article aims to introduce the clinicopathological features, detection methods, possible tumorigenic mechanisms and therapeutic prospects of leukemia with NUTM1 gene rearrangement, to increase the understanding of this type of leukemia and provide reference for the precise molecular subtyping and treatment.

Objective: To understand the epidemiological characteristics of Human coronavirus (HCoV), the patterns of emergence and circulation, and the genotype distribution of human coronavirus OC43 (HCoV-OC43) from November, 2009 to April, 2016 in Shanghai. Methods: A total of 6 059 respiratory specimens, including pharyngeal swab, sputum, nasopharyngeal aspirates and alveolar lavage fluid, as well as relative clinical data were collected from patients with acute respiratory infections from seven sentinel hospitals during November, 2009 to April, 2016 in Shanghai. Respiratory specimens were tested by RT-PCR with HCoV-conserved primers and subsequently genotyped by DNA sequencing. Using specific primers to amplify and sequence full-length Spike (S), RNA-dependent RNA polymerase (RDRP) and nucleocapsid (N) gene from HCoV-OC43 positive samples. Further genotype and phylogenetic analysis of HCoV-OC43 were performed by conducting phylogenetic trees. Results: Among 6 059 patients, the total frequency of HCoV was 63 (1.04%), in which HCoV-OC43 was the most frequently detected species with 34 positive samples, followed by human coronavirus 229E (HCoV-229E) and human coronavirus HKU1 (HCoV-HKU1) with 18 and 10 positive sample respectively. However, other HCoV like human coronavirus NL63 (HCoV-NL63), severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle-East Respiratory Syndrome Coronavirus (MERS-CoV), were not been detected, which illustrated that HCoV-OC43 was the dominant subtype. The full-length of S, RDRP and N gene were obtained from 29 HCoV-OC43 positive samples. According to the sequence-analysis, 27 of which was genotype D, 2 of which was genotype B and others genotype, including genotype E, F and G, were not detected. The result indicated that the genotype D may be the dominant genotype. Further analysis of S protein that help HCoV-OC43 to entry host cell and stimulate the host immune system to produce neutralizing antibody found that two important functional domains in S protein, N-terminal domain (NTD) and receptor-binding domain (RBD) contained more amino acid substitution and positive selection sites, accompanied with amino acid insertion/deletion. 13 positive selection sites were all located in the NTD or RBD, 10 of which were located in the NTD and 3 in the RBD. Conclusion Human coronavirus OC43 was the major circulation human coronaviurs in Shanghai from 2009 to 2016, in which genotype D was the dominant genotype. NTD and RBD regions of the S protein were hypervariable region during HCoV-OC43 evolution, and had amino acid substitutions as well as amino acid insertion/deletion.

Objective To analyze the genotype-phenotype correlation in 5 families with congenital ectopia lentis (CEL) accompanied with cardiovascular abnormal manifestation.Methods Detailed clinical data of 15 family members in 5 families were collected from August 2017 to March 2018 in Zhongshan Ophthalmic Center,including examination of the condition of lens before and after mydriasis by slit-lamp,evaluation of the cardiovascular system using transthoracic echocardiography,and evaluation of the degree of involvement of the subjects' skeletal system using X-ray images.Genomic DNAs were extracted from whole blood sample of the 5 probands and 10 relatives,and screened for FBN1 mutation by targeted exome sequencing.The possible genotype-phenotype correlation was analyzed by reviewing previous literatures into these mutation sites.The study followed the principles of the Helsinki Declaration and written informed consent was obtained from each subject prior to any examination.Results All of the five probands were diagnosed as CEL accompanied with cardiovascular abnormal manifestation.FBN1 gene mutations were identified in all of the five probands,including four missense mutations (c.2741G＞T,c.2585G＞T,c.1633C＞T,c.4260C＞G) and one splicing mutation (c.2114-1G＞C).It was predicted that all of the 5 mutations would alter the protein structure.Conclusions FBN1 gene has a high degree of clinical heterogeneity,and the early detection of ocular phenotypes combined with genetic screening is of great significance in the diagnosis of cardiovascular abnormalities.