Most Down Articles

    Published in last 1 year | In last 2 years| In last 3 years| All| Most Downloaded in Recent Month | Most Downloaded in Recent Year|

    In last 3 years
    Please wait a minute...
    For Selected: Toggle Thumbnails
    Association study of synaptotagmin 2 gene polymorphisms with schizophrenia in Chinese Han population
    Hong YANG, Xin-xin HUANG, Chao LIU, Qing-song LIANG, Hua YANG, Jian-biao ZHANG, Jian XU, Ying-yi WANG, Hai-su WU, Qin-yu LÜ, Zheng-hui YI
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2021, 41 (1): 16-22.   DOI: 10.3969/j.issn.1674-8115.2021.01.003
    Abstract395)   HTML5)    PDF(pc) (1352KB)(529)       Save
    Objective

    ·To investigate the relationship between synaptotagmin 2 (SYT2) gene and schizophrenia (SZ) in Chinese Han population.

    Methods

    ·TaqMan probe genotyping technique was used to detect 5 single nucleotide polymorphism (SNP) sites (rs6427957,rs907697,rs12564274,rs10800856 and rs61820945) of SYT2 gene in 478 SZ patients (SZ group) and 474 healthy controls (HC group). HaploView software, SHEsis and SNPstats online software were used to compare the alleles, genotypes, genotypes under different genetic models and haplotypes frequency distribution between the SZ group and HC group.

    Results

    ·The frequency distribution differences of rs10800856 allele and genotype were statistically significant between the SZ group and HC group, respectively (P=0.003, P=0.012). After Bonferroni correction, the allele frequency difference of rs10800856 site was still statistically significant (P=0.015), while the genotype frequency difference was not statistically significant. Under the dominant and additive genetic mode, the genotype frequency distributions of rs10800856 site were significantly different between the SZ group and HC group (P=0.004, P=0.005). After correction, the differences were still statistically significant (P=0.020, P=0.025). The frequency distribution of haplotype C-T-C, composed of rs12564274-rs10800856-rs61820945, between the SZ group and HC group was significantly different (P=0.009). After Bonferroni correction, the difference was still statistically significant (P=0.036).

    Conclusion

    ·In Chinese Han population, SYT2 may be the susceptibility gene of SZ, and rs10800856 site may be associated with the risk of SZ.

    Table and Figures | Reference | Related Articles | Metrics
    Relationship between aggressive behavior in patients with bipolar disorder and DRD4 gene polymorphism and personality characteristics
    YANG Dao-liang, LIU Han, WU Yu-jie, DU Wen-yong, JI Wei-dong, CHEN Xuan-xuan
       2020, 40 (3): 362-.   DOI: 10.3969/j.issn.1674-8115.2020.03.014
    Abstract673)      PDF(pc) (7776KB)(520)       Save
    Objective · To explore the relationship between aggressive behavior, dopamine receptor D4 (DRD4) exon Ⅲ 48 bp variable number tandem repeat (VNTR) and personality characteristics in patients with bipolar disorder. Methods · January 2015 to December 2018, 173 patients with bipolar disorder were selected Shanghai Changning Mental Health Center, Shanghai Jingan Mental Health Center, Shanghai Xuhui Mental Health Center, and Shanghai Jiading Central Hospital. According to the score of Modified Overt Aggression scale (MOAS), 173 patients were divided into aggressive behavior group (research group) and non-aggressive behavior group (control group). General survey and the temperament and personality questionnaire (Temperature and Character Inventory, TCI) were carried out, respectively. The polymorphism of DRD4 gene were genotypedthe polymerase chain reaction-restriction fragment length polymorphism method. Genetic equilibrium test of genotype Hardy-Weinberg and the difference of genotype frequency between the two groups were analyzedusing SHEsis software. The relationship between aggression behavior and DRD4 gene polymorphism and personality traits in bipolar disorder patients was analyzedχ2 test and t test. Results · There was no significant difference in the general data between research group and control group (P>0.05). Six alleles and nine genotypes of DRD4 exon Ⅲ 48 bp VNTR were detected. The most common alleles in the two groups were four repeat alleles. There were statistical differences in the frequency distribution of genotypes and alleles of DRD4 exon Ⅲ 48 bp VNTR between the two groups (P0.040, P0.018). The scores of novelty seeking and harm avoidance in the research group were higher than those in the control group (P0.026, P0.000), while the scores of cooperativeness and self-directedness were lower than those in the control group (both P0.000). Patients with long repeat alleles had significantly higher scores in novelty seeking and harm avoidance, and lower scores in cooperativeness, compared with patients with short repeat alleles (P0.000, P0.006, P0.038). Conclusion · Aggressive behavior in patients with bipolar disorder may be associated with DRD4 exon Ⅲ 48 bp VNTR. In bipolar disorder, patients with aggressive behavior have unique personality characteristics in impulsiving, novelty-seeking, exploring, being afraid of uncertainty, revengeful, behaving himself and so on. Patients with long repeat alleles have more significant personality abnormalities.
    Related Articles | Metrics
    Application of artificial intelligence in assisted diagnosis and treatment of cardiovascular disease
    LU Yan-qiao, SHEN Lan, HE Ben
       2020, 40 (2): 259-.   DOI: 10.3969/j.issn.1674-8115.2020.02.019
    Abstract684)      PDF(pc) (6215KB)(508)       Save
    With the continuous development of science and technology, artificial intelligence (AI) with self-directed learning, induction and deduction, low error rate and other advantages has become the most popular emerging technology. In the traditional medical field, especially in cardiovascular diseases with high incidence, AI can not only provide auxiliary diagnosis and treatment for patients, but also enable doctors to optimize traditional risk assessment models which can predict the evolution of the disease better. Thereby, AI can provide more convenience and new perspectives for clinical work. This paper reviews the research progress of AI in the cardiovascular field in recent years.
    Related Articles | Metrics
       2020, 40 (3): 2-.  
    Abstract336)      PDF(pc) (10722KB)(484)       Save
    Related Articles | Metrics
    Study on Prrx1 + periodontal ligament stem cells during orthodontic tooth movement by lineage tracing
    WANG Xijun, JIN Anting, HUANG Xiangru, XU Hongyuan, GAO Xin, YANG Yiling, DAI Qinggang, JIANG Lingyong
    Journal of Shanghai Jiao Tong University (Medical Science)    2022, 42 (8): 1008-1015.   DOI: 10.3969/j.issn.1674-8115.2022.08.005
    Abstract82)   HTML10)    PDF(pc) (4046KB)(478)       Save

    Objective ·To investigate the dynamic distribution of paired related homebox 1 (Prrx1) positive cell lineage (Prrx1+ cell lineage) in periodontal ligament stem cells (PDLSCs) during tooth movement in mice by Cre/loxP recombination system. Methods ·By using Cre/loxP recombination system, inducible Prrx1-CreERT2mice were mated with R26tdTomato fluorescently labeled mice, and their offspring mice were genotyped by PCR. Eight offspring mice were injected with tamoxifen (TA) intraperitoneally to mark the Prrx1+cell lineage (tdTomato+ cells) in PDLSCs. The orthodontics tooth movement (OTM) model was constructed by placing a force-loading device on the left side of maxilla (i.e., OTM side), and the right side without force was control side (i.e., Ctrl side). The mice were sacrificed on the third day (OTM 3 d) and the seventh day (OTM 7 d) of tooth movement, and their bilateral maxillary molars and surrounding periodontium were collected, decalcified, embedded and frozen sectioned. The changes of periodontal ligament in the tension area and compression area were observed by hematoxylin-eosin staining (H-E staining), and the dynamic distribution of Prrx1+ cell lineage was observed by immunofluorescence staining. Results ·The genotype of the offspring mice was identified by PCR as Prrx1-CreERT2;R26tdTomato . With the increased action of the stressing device, the tooth movement distance of OTM 7 d mice [(87.44±4.02) μm] increased significantly compared with that of the OTM 3 d mice [(42.81±5.04) μm], suggesting OTM model was successfully constructed. H-E staining showed that the periodontal ligament and its gap in the compression area of the OTM side was compressed and narrowed on OTM 3 d, and its width was gradually restored on OTM 7 d; the periodontal ligament in the tension area of the OTM side was stretched on OTM 3 d, and the periodontal ligament was more regularly arranged on OTM 7 d than that on OTM 3 d. Immunofluorescence staining showed that the number of tdTomato+ cells in the periodontal ligament of the compression area on the OTM side was lower than that of the Ctrl side on OTM 3 d, and the number of tdTomato+ cells in compression area on the OTM side was higher than that of the Ctrl side on OTM 7 d (both P<0.05); on both OTM 3 d and OTM 7 d, the number of tdTomato+ cells in tension area on the OTM side increased compared with that on the Ctrl side (both P<0.05). Conclusion ·The OTM model of Prrx1-CreERT2;R26tdTomato mice is successfully constructed, and the involvement of Prrx1+ cell lineage in periodontal remodeling during OTM is tentatively confirmed.

    Table and Figures | Reference | Related Articles | Metrics
    Spatio-temporal analysis of incidence rate of syphilis in China
    Ting-ting TIAN, Ya-xuan HOU, Yu-qing LI, Hong-jiao QI, Mo CHEN, Mei-xia LÜ
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2021, 41 (5): 648-652.   DOI: 10.3969/j.issn.1674-8115.2021.05.015
    Abstract483)   HTML17)    PDF(pc) (1308KB)(459)       Save
    Objective

    ·To get the spatio-temporal distribution of the syphilis epidemic in 31 provinces, municipalities directly under the Central Government and autonomous regions of the mainland of China in 2017.

    Methods

    ·The data of syphilis incidence in 31 provinces, municipalities and autonomous regions of the mainland of China in 2017 were obtained from the China Public Health Science Data Center, and the time distrbution characteristics of the incidence rates were described. The global Moran′s I index and Anselin local Moran′s I index were used to analyze the spatial cluster characteristics of the syphilis cases, and then space-time scan analysis based on Poisson distribution was used to explore the spatio-temporal distribution characteristics.

    Results

    ·In 2017, the number of syphilis cases in the 31 provinces, municipalities, and autonomous regions of the mainland of China was 475 860, and the incidence rate was 34.49/100 000. Latent syphilis accounted for most of the cases, reaching 76.78% (365 353/475 860). August had the highest incidence rate. For the spatial distribution, Xinjiang Uygur Autonomous Region was the provincial-level unit with the highest incidence rate of syphilis, reaching 91.80/100 000. The incidence rates of latent, secondary, tertiary, and congenital syphilis appeared with positive spatial autocorrelation (all P<0.05). The high-high clusters of secondary and tertiary syphilis appeared in Shanghai, Jiangsu, and Zhejiang (all P<0.05), respectively, while the high-high clusters of congenital syphilis appeared in Xinjiang and Tibet (P=0.000). The results of space-time scan analysis showed that the main cluster appeared from April to September in Fujian, Jiangxi, Zhejiang, Shanghai, Jiangsu, Hunan, Anhui, and Guangdong (P=0.000). Compared with the outside area, the relative risk of syphilis in this cluster was 1.59 times.

    Conclusion

    ·The incidence rate of syphilis in China is relatively high. There are differences in the types and periods of syphilis prevention and control among provinces, municipalities and autonomous regions. From April to September, Fujian, Jiangxi, Zhejiang, Shanghai, Jiangsu, Hunan, Anhui and Guangdong are the key areas for syphilis prevention and control in the mainland of China.

    Table and Figures | Reference | Related Articles | Metrics
    A novel antithrombotic antibody targeting the binding sites of the coagulation factor FⅨa-FⅧa complex
    Tian-yao SUN, Shi-feng JIANG, Qin XU, Jun-ling LIU, Su-ying DANG, Xue-mei FAN
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2021, 41 (9): 1133-1141.   DOI: 10.3969/j.issn.1674-8115.2021.09.001
    Abstract297)      PDF(pc) (6502KB)(450)       Save
    Objective

    ·To prepare a monoclonal antibody targeting coagulation factor Ⅸa (FⅨa), a key factor in endogenous coagulation pathways, and study its antithrombotic roles and mechanisms.

    Methods

    ·Immunization of mice, hybridoma technology, cell expression and purification were used to prepare the anti-FⅨa monoclonal antibodies of high purity. The monoclonal antibodies with high affinity for FⅨa were screened by enzyme-linked immunosorbent assay. The activated partial thromboplastin time (APTT) and prothrombin time (PT) were used to evaluate the antithrombotic effects of the monoclonal antibody. And then chromogenic substrate method was used to detect the effect of monoclonal antibody on the enzyme activity of FⅨa. The method of computer simulation of protein-protein docking was adopted to predict the possible binding sites between FⅨa and the antibody, and the binding site, was verified by competitive experiments (indirectly through the chromatic substrate method).

    Results

    ·FⅨa-4, an anti-FⅨa monoclonal antibody with high affinity, was generated. Although FⅨa-4 did not affect PT and the enzyme activity of FⅨa, it significantly prolonged APTT to 88.8 s, which was 3.5 times of the control group (25.5 s), in a concentration-gradient dependence. The protein-protein docking prediction results revealed that FⅨa-4 did not directly bind to substrate catalytic sites of FⅨa, but occupied the binding region of FⅨa and FⅧa. Competitive experiments further verified the above results. FⅨa-4 inhibited FⅩa production in a dose-dependent manner, almost completely inhibiting FⅩa production at the concentrations of 400 pmol/L, and FⅧa could correct the inhibition effect of the antibody up to nearly 50%.

    Conclusion

    ·The monoclonal antibody against FⅨa-4 is obtained. FⅨa-4 competes with FⅧa to bind FⅨa, and inhibits the conversion of FⅩ to FⅩa which is catalyzed by FⅧa-FⅨa complex; it plays an antithrombotic role mainly by inhibiting endogenous coagulation pathway.

    Table and Figures | Reference | Related Articles | Metrics
    Progress and controversy in comprehensive treatment of hilar cholangiocarcinoma
    Wei CHEN, Yingbin LIU
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2022, 42 (1): 1-8.   DOI: 10.3969/j.issn.1674-8115.2022.01.001
    Abstract253)   HTML94)    PDF(pc) (1076KB)(429)       Save

    Hilar cholangiocarcinoma is a tumor with a poor prognosis, which is difficult to diagnosis in the early stage and has caused lots of controversies in clinical treatment. At present, surgical resection provides the main possibility for cure. Precise evaluation and adequate preparation before surgery and safe, effective, standardized resection are the key methods to successful treatment. Comprehensive treatment based on chemotherapy improves the survival of patients. In the future, guided by concepts of oncology, comprehensive treatment of multiple modes, containing surgery, chemotherapy, targeted therapy, immune therapy and biological therapy, is the development trend of hilar cholangiocarcinoma treatment.

    Reference | Related Articles | Metrics
    Identification of hub genes and key pathways in breast cancersurvival-based bioinformatics analysis
    CHEN Si, LIU Chun-liang, ZHAO Qian, SUN Hai-peng, LIU Yun-xia
       2020, 40 (3): 294-.   DOI: 10.3969/j.issn.1674-8115.2020.03.004
    Abstract808)      PDF(pc) (10479KB)(427)       Save
    Objective &middot; To identify hub genes and key pathways in breast cancerbioinformatics analysis that integrated gene data with clinical survival analysis. Methods &middot; Three gene profilings downloaded Gene Expression Omnibus (GEO) were used to identify differentially expressed genes (DEGs) in breast cancer. Kaplan-Meier plotter was used to identify the DEGs that were significantly associated with overall survival in breast cancer. Gene Ontology (GO) function analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed. Next, hub genes were identified the protein-protein interaction (PPI) network. Oncomine and the Human Protein Atlas (HPA) database were used to validate the of the hub genes. The s of hub genes in MDA-MB-231 cells and MCF-10A cells were detectedquantitative real-time PCR (qPCR). Results &middot; Among the DEGs, 262 genes were significantly correlated with overall survival of breast cancer patients. The results of GO functional analysis and KEGG pathway analysis showed that these genes were associated with nuclear division, cell division and chromosome segregation, and were mainly enriched on the pathways such as cell cycle, FoxO signaling pathway and oocyte meiosis. PPI network construction identified ten hub genes. They were all highly expressed in breast cancer, which were validatedthe databases. The results of qPCR showed that 8 out of 10 hub genes were highly expressed in breast cancer cells. Conclusion &middot; The hub genes and key pathways involved in the development of breast cancer are identifiedsurvival-based bioinformatics analysis, which are mainly associated with cell cycle regulation and cell division.
    Related Articles | Metrics
    Preliminary study on the cellular level of SARS-CoV-2 proteins mediated by macropinocytosis pathway
    JIANG Gan, YANG Yuquan, CHEN Yaoxing, HOU Zhaoyuan, GAO Xiaoling, CHEN Hongzhuan, JIA Hao
    Journal of Shanghai Jiao Tong University (Medical Science)    2022, 42 (8): 987-996.   DOI: 10.3969/j.issn.1674-8115.2022.08.003
    Abstract74)   HTML9)    PDF(pc) (8168KB)(425)       Save

    Objective ·To investigate the effects of several key proteins of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on macropinocytosis in various cell models. Methods ·① The interactions between spike protein receptor-binding domain (S-RBD), nucleocapsid protein (N) and non-structural protein-7 (NSP7) of SARS-COV-2 and HEK-293T intracellular proteins were explored by co-immunoprecipitation assay. ② In vitro, S-RBD, N and NSP7 proteins of SARS-CoV-2 were incubated with HEK-293T/bEnd.3/Beas-2b cells (normal cell models), respectively, and the changes of macropinocytosis level of cells labeled with fluorescein isothiocyanate (FITC)-70 kDa-dextran were observed. ③ In vitro, S-RBD, N and NSP7 proteins of SARS-CoV-2 were incubated with inflammatory cells induced by lipopolysaccharide (LPS), respectively, and the changes of macropinocytosis level of inflammatory cells were analyzed. ④ In the normal cell models and inflammatory cell model, EIPA or lipoprotein nano-drug carriers loaded with Rab5 small interfering RNA (siRNA) were used to inhibit the macropinocytosis induced by SARS-CoV-2 proteins, respectively, and the uptake of S-RBD, N and NSP7 proteins by cells were further observed. Results ·① The three proteins of SARS-COV-2 could bind to Rab small GTPase proteins after being absorbed into cells. ② It was found that S-RBD, N and NSP7 proteins of SARS-COV-2 could induce the macropinocytosis after entering the HEK-293T/bEnd.3/Beas-2b cells. ③ Furthermore, the three proteins of SARS-COV-2 could enhance the megapinocytosis of the inflammatory cell. ④ After treatment with EIPA (75 μmol/L) or lipoprotein nano-drug carriers loaded with Rab5 siRNA, the uptake of S-RBD, N and NSP7 proteins were decreased in both types of cells. Conclusion ·S-RBD, N and NSP7 proteins of SARS-CoV-2 can up-regulate megapinocytosis levels in various cell models, especially in the case of combined inflammation infection. At the same time, macropinocytosis inhibitor / lipoprotein nano-drug carrier can inhibit the macropinocytosis up-regulated by the above proteins, and then reduce the entry levels of viral proteins.

    Table and Figures | Reference | Related Articles | Metrics
    Marine sponge-derived smenospongine overcomes resistance of cisplatin via inhibiting EGFR-Akt-ABCG2 pathway in NSCLC cells
    LIAO Yahui, LIU Liyun, ZHU Hongrui, LIN Houwen, YAN Jizhou, SUN Fan
    Journal of Shanghai Jiao Tong University (Medical Science)    2022, 42 (8): 997-1007.   DOI: 10.3969/j.issn.1674-8115.2022.08.004
    Abstract81)   HTML10)    PDF(pc) (4930KB)(417)       Save

    Objective ·To explore the antitumor activities and mechanisms of the sesquiterpene amine quinone compound smenospongine (SME) in non-small cell lung cancer (NSCLC) cell line A549 and cisplatin-resistant cell line A549/DDP. Methods ·Parental cell A549 and its cisplatin-resistant cell A549/DDP were used as research models. CCK-8 assay was used to detect the half maximum inhibitory concentration (IC50) of the two cell lines treated with first-line chemotherapeutic drugs, in order to verify the multidrug resistance of A549/DDP. Colony formation assay was used to detect the effect of SME on the proliferation of parental and drug-resistant cells. Transwell invasion assay and Western blotting were used to detect the effect of SME on epithelial to mesenchymal transformation (EMT) of A549/DDP; Western blotting and quantitative real-time PCR (qRT-PCR) were used to detect the protein and mRNA expression levels of multidrug resistance genes regulated by SME in two cell lines and the molecular mechanism of drug resistance. Furthermore, Western blotting was used to detect the effect of SME on the upstream protein of multidrug resistance protein, ATP-binding cassette superfamily G member 2 (ABCG2), and flow cytometry was used to detect the effect of SME on the cell cycle of parental and cisplatin-resistant cells. TdT-mediated dUTP Nick-end labeling (TUNEL) and Western blotting were used to detect the effect of SME on apoptosis of the two cell lines. Results ·Compared with parental cells, cisplatin-resistant A549/DDP cells showed significant resistance to cisplatin and showed multidrug resistance to the first-line chemotherapy drugs used on lung cancer. SME markedly inhibited the proliferation and clone formation of A549 and A549/DDP as well as the EMT of drug-resistant cell. SME notably down-regulated the expression of ABCG2 protein and mRNA, and inhibited the epidermal growth factor receptor (EGFR)-serine/threonine kinase (Akt) signal pathway upstream of ABCG2, which thereby down-regulated ABCG2, and positively regulated FoxO1. SME induced G0/G1 arrest and induced apoptosis of both cells. Conclusion ·As a new small molecular compound in overcoming the drug resistance of NSCLC, SME inhibits the cell viability of A549 and A549/DDP by restraining EGFR-Akt signal pathway which thereby down-regulates ABCG2, positively regulates FoxO1 and inhibits EMT of A549/DDP, which finally leads to apoptosis.

    Table and Figures | Reference | Related Articles | Metrics
    Analysis of clinical trial research in Shanghai Jiao Tong University School of Medicine
    PENG Shutao, QIU Xiaochun
    Journal of Shanghai Jiao Tong University (Medical Science)    2022, 42 (8): 971-979.   DOI: 10.3969/j.issn.1674-8115.2022.08.001
    Abstract84)   HTML223)    PDF(pc) (4893KB)(412)       Save

    Objective ·To analyze the discipline distribution, research teams, multi-center cooperation and trend of clinical trial registration and published papers of Shanghai Jiao Tong University School of Medicine (SJTUSM) from 2012 to 2021. Methods ·On the Dimensions, and China and US clinical trial registration platforms, the clinical trial information registered by the institutions affiliated to SJTUSM from 2012 to 2021 was retrieved. Each clinical trial was classified and marked according to the classification standards such as Health Research Classification System (HRCS) and International Commission on Radiological Protection (ICRP). Clinical trial papers published by the first author or corresponding author from SJTUSM in the same period were retrieved in PubMed. EXCEL 2016 and VOSviewer 1.6.18 software were used to conduct cluster analysis and visual summary. Results ·From 2012 to 2021, Chinese researchers participated in 54 652 newly registered clinical trials worldwide, accounting for 13.63% of the global in total. Beijing, Shanghai and Guangzhou have been the top three cities with the most clinical trials in China. The number of newly registered and underdeveloped clinical trial projects in SJTUSM has been basically increased year by year in the past 10 years, but it declined slightly in 2021. In total, 3 970 clinical trials were registered by SJTUSM, in which 44.4% were registered on the Chinese clinical trial platform and 55.0% were registered on the US clinical trial platform, and 85.5% were initiated by researchers. Cancer, cardiovascular disease, oral and gastrointestinal disease, mental disease, and metabolic and endocrine disease were the major areas of clinical trial research of SJTUSM. Lung cancer research ranked the first in all 47 kinds of tumor research. The Sixth People 's Hospital, Ruijin Hospital and Renji Hospital ranked top 3 in clinical trial registration among hospitals affiliated to SJTUSM. A total of 1 898 papers (5.4%) were published in clinical trials with SJTUSM as the first author 's or correspondent author 's institution, and the research topics were mainly distributed in the fields of gastroenterology, heart disease, tumor, radiation, orthodontics and diabetes. The affiliated hospitals of Fudan University has been the main institutions of clinical trial cooperation. SJTUSM has formed core research teams in the fields of diabetes, hypertension, orthopedics, radiology and nephrology. Conclusion ·SJTUSM has obvious advantages in clinical trial research discipline and a great potential for emerging disciplines. Innovative clinical research teams have been formed in SJTUSM. Multi-center clinical trials are the norm of clinical trials, and SJTUSM has presided over international multi-center clinical trial cooperation in some fields. However, compared with the clinical trial registration in the world and other domestic regions in 2021, the number of clinical trial registrations of SJTUSM has decreased significantly, and the reasons need to be further analyzed.

    Table and Figures | Reference | Related Articles | Metrics
    Comparison of mitochondria and NAD + level in the murine cochleae of C57BL/6J mice at different ages
    FENG Baoyi, DONG Tingting, ZHENG Xiaofei, TAO Yong, WU Hao
    Journal of Shanghai Jiao Tong University (Medical Science)    2022, 42 (8): 980-986.   DOI: 10.3969/j.issn.1674-8115.2022.08.002
    Abstract95)   HTML30)    PDF(pc) (3503KB)(401)       Save

    Objective ·To investigate the changes of mitochondria and nicotinamide adenine dinucleotide (NAD+) levels in the cochleae of C57BL/6J mice at different ages, and explore potential mechanism of age-related hearing loss. Methods ·Forty C57BL/6J male mice aged 1, 4, 8, 12 months, respectively, were chosen and classified into 4 groups in terms of age (n=10). Auditory brain response (ABR) and distortion product otoacoustic emission (DPOAE) were conducted to detect the auditory function of mice at different ages; real-time quantitative PCR (RT-qPCR) was applied to compare the mRNA expression levels of the genes associated with mitochondrial energy metabolism in the cochleae of mice at different ages, including Ndufb5 (NADH: ubiquinone oxidoreductase subunit B5), Sdha (succinate dehydrogenase complex flavoprotein subunit A), Sdhc (succinate dehydrogenase complex subunit C), and Atp5b (ATP synthase, H+ transporting mitochondrial F1 complex, beta subunit); the changes of mitochondrial quantity in the cochlear hair cells from the mice aged 1 month and 12 months were observed by whole-mount immunofluorescence; the mitochondrial ultrastructure in the cochlear sensory epithelia including outer and inner hair cells, myelinate nerve fibers and spiral ganglion neurons of 1- and 12-month-old mice was observed by transmission electron microscope (TEM); NAD+ levels in the cochleae of mice at different ages were detected by quantitative colorimetry. Results ·The ABR thresholds of the 12-month-old mice were significantly elevated in comparison with those of the 1-month-old mice at the frequency range of 5.66?45.00 kHz (P<0.01); and the DPOAE thresholds of the 12-month-old mice were significantly elevated in comparison with those of the 1-month-old mice at the frequency range of 11.32?32.00 kHz (P<0.01). The expression levels of the genes related to mitochondrial functions including Ndufb5, Sdha, Sdhc, and Atp5b showed a downward trend with the age, which in the 8-month-old and 12-month-old mice were significantly different from those in the 1-month-old mice (P<0.05). Immunostaining showed that the number of mitochondria in cochlear inner hair cells of the 12-month-old mice was significantly lower than that of 1-month-old mice. It was observed by TEM that vacuolar degenerated mitochondria and larger lipofuscin existed in the inner hair cells, myelinate nerve fibers and spiral ganglion neurons of the 12-month-old mice. The NAD+ level showed a decreasing trend with age, declining significantly from 8 months of age, compared with the 1-month-old mice (P<0.01). Conclusion ·Mitochondrial dysfunction with abnormal structure and descending NAD+ levels in the cochleae is consistent with hearing function deterioration in C57BL/6J aging mice.

    Table and Figures | Reference | Related Articles | Metrics
    Level of intolerance of uncertainty and related factors in patients with anxiety disorders
    CUI Hui-ru, LI Wei, PANG Jiao-yan, LI Hui, LI Chun-bo
       2020, 40 (3): 346-.   DOI: 10.3969/j.issn.1674-8115.2020.03.011
    Abstract737)      PDF(pc) (6496KB)(384)       Save
    Objective &middot; To investigate the level of intolerance of uncertainty (IU) and possible related factors in the patients with anxiety disorders. Methods &middot; The patients&rsquo; diagnosis was made according to Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM- Ⅳ ). Thirty-five cases of generalized anxiety disorder (GAD), 15 cases of panic disorder (PD) and 31 healthy controls (HC group) were recruited at the same time. IU level was assessedusing the Chinese version of Intolerance of Uncertainty Scale (IUS). The characteristics of anxiety symptoms, depressive symptoms and body perception were assessedHamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD) and Body Perception Questionaire (BPQ), respectively. Results &middot; The IU levels of both GAD group and PD group were significantly higher than those of HC group (P0.000). There was no significant difference in IU levels between GAD group and PD group (P0.491). The IU levels of GAD patients were positively correlated with HAMA-somatic anxiety (r0.377, P0.025) and BPQ-awareness (r0.342, P0.044). Conclusion &middot; The patients with anxiety disorders have elevated IU levels, compared with healthy people. Possibly, somatic anxiety and body perception-awareness are related factors to IU in GAD patients.
    Related Articles | Metrics
       2020, 40 (3): 3-.  
    Abstract410)      PDF(pc) (3260KB)(381)       Save
    Related Articles | Metrics
    Management on prevention of new coronavirus infection in periodontal treatment
    QIAN Jie-lei, SHU Rong
       2020, 40 (2): 145-.   DOI: 10.3969/j.issn.1674-8115.2020.02.001
    Abstract754)      PDF(pc) (6287KB)(377)       Save
    Currently, corona virus disease 2019 (COVID-19) causedsevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly contagious disease. The epidemic situation was so severe that the accumulative number of confirmed diagnoses in China reached more than seventy thousand24:00, Feb. 18, 2020. This paper, based on the etiological and epidemiological characteristics of the virus, introduces the infection prevention protocols for COVID-19 before, during and after the periodontal treatment for the reference of stomatologists. Proper prevention methods can reduce the risks of nosocomial infection, prevent further spreading, ensure the safety of the medical staff and patients, and then ensure both medical quality and safety.
    Related Articles | Metrics
    Role of bile acid on maintaining metabolic homeostasis
    LI Sen1, JIA Zi-heng1, WEI Xue-rui1, MA Sai1, LU Tian-cheng1, LI Ting-ting2, GU Yan-yun2
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2020, 40 (8): 1126-1130.   DOI: 10.3969/j.issn.1674-8115.2020.08.021
    Abstract547)      PDF(pc) (8992KB)(371)       Save
    Bile acids are the main products of the cholesterol degradation in the liver. They promote the absorption and transportation of the intestinal lipids. Diverse bile acid receptors are widely distributed in human tissues and organs, including farnesoid X receptor (FXR) and Takeda G protein receptor (TGR5). The expression pattern of different bile acid receptors and their different affinities to various bile acids as their ligands determines their pleiotropic downstream effects, including regulating bile acid synthesis and transportation, immune and metabolism homeostasis. In addition, the bile acid pool includes components derived from both host and gut microbiota, which collaboratively contribute to the bile acid signaling activation in different compartments. Therefore, bile acid pool represents an information hub allowing the crosstalk between the host and gut microbiome and hereby modulating host metabolic homeostasis and gut microbiome symbiosis. This article reviews the recent advances in the field of bile acid regulation and the related mechanisms of bile acid signaling pathway to maintain metabolic homeostasis.
    Related Articles | Metrics
    Expression characteristics of silent information regulator transcript 1 in intestinal tissues of neonatal necrotizing enterocolitis
    Rui CHEN, Yun ZHAO, Xiao-xia ZHAO, Dong MA, Yi-jiang HAN, Deng-ming LAI, Wei-zhong GU, Jin-fa TOU
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2021, 41 (9): 1154-1161.   DOI: 10.3969/j.issn.1674-8115.2021.09.004
    Abstract289)      PDF(pc) (4204KB)(371)       Save
    Objective

    ·To explore the expression characteristics of silent information regulator transcript 1 (SIRT1) in intestinal tissues of necrotizing enterocolitis (NEC), and preliminarily discuss the effect and possible mechanisms of SIRT1 in NEC.

    Methods

    ·From June 2018 to October 2020, 80 children with NEC who were treated by neonatal surgery in the Children's Hospital, Zhejiang University School of Medicine were divided into observation group and control group. The tissue samples of the observation group were inflammatory necrotic intestinal tubes, while those of the control group were incised intestinal tubes. The NEC children in the control group were with intestinal strictures after conservative treatment, and then were treated by surgery again. The clinical data of the two groups were collected 24 h before surgery, including procalcitonin (PCT), hypersensitive C reactive protein (hs-CRP), cytokines [interleukin-2 (IL-2), IL-4, IL-6, IL-10, tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ)] in the serum, gender, gestational age and so on. The expression characteristics of SIRT1, nuclear factor-κB (NF-κB), transforming growth factor β1 (TGF-β1) and Smad3 proteins of the tissues in the two groups were detected by immunohistochemistry. IEC-6 cells of small intestinal epithelium of SD female rats were cultured in vitro. After SIRT1 expression in IEC-6 cells was inhibited by small interfering RNA (siRNA) technology, the protein expression of NF-κB was detected by Western blotting and the effects of SIRT1 on IEC-6 cells were detected by Cell Counting Kit-8 (CCK8) and Transwell migration assay.

    Results

    ·There was no significant difference in gender, gestational age, birth weight and delivery mode between the two groups. Compared with the control group, the levels of hs-CRP, PCT, IL-6 and IL-10 in the serum in the observation group increased within 24 h before surgery (all P=0.000).Compared with the margin tissues of narrow intestines in the control group, the positive expression of SIRT1 in NEC necrotic intestinal tissues in the observation group showed low expression, and the positive expression of NF-κB was overexpressed (both P=0.000). There was no significant difference in the expression of Smad3 and TGF-β1 between the two groups. The expression of SIRT1 in NEC necrotic intestinal tissue was negatively correlated with the expression of NF-κB (r=-0.592, P=0.000). After inhibiting the mRNA and protein expression of SIRT1, the relative expression of NF-κB in IEC-6 cells was increased, and the proliferation and migration ability of the cells was significantly decreased.

    Conclusion

    ·The mechanism for the SIRT1 reducing progression of NEC may be that SIRT1 can inhibit the expression of NF-κB to reduce the expression of inflammatory factors in NEC, and another possible mechanism may be that SIRT1 can protect intestinal epithelial cells by promoting cell proliferation and migration.

    Table and Figures | Reference | Related Articles | Metrics
    Laparoscopic diagnosis and treatment of high jejunal atresia and stenosis in neonates
    Bao-hong ZHAO, Hong-xia REN, Xiao-xia WU, Yuan-yuan JIN, Wen-yue LIU, Liang ZHAO, Hui ZHANG, Xin GUO, Xue SUN
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2021, 41 (9): 1162-1168.   DOI: 10.3969/j.issn.1674-8115.2021.09.005
    Abstract220)      PDF(pc) (2950KB)(370)       Save
    Objective

    ·To investigate the effect of laparoscope on the treatment of high jejunal atresia and stenosis in neonates.

    Methods

    ·From January 2009 to December 2019, 90 neonates with high jejunal atresia and stenosis were operated on Children′s Hospital of Shanxi province. According to whether laparoscopic surgery was used or not, they were divided into laparoscopic group (n=66) and laparotomy group (n=24). In the laparoscopic group, 27 cases of type Ⅰ atresia and stenosis less than 10 cm from Treitz ligament were anastomosed under laparoscopy, and 39 cases of jejunal atresia and stenosis 10?30 cm from the Treitz ligament, underwent extraperitoneal anastomosis by expanded trocar hole with the aid of single-site laparoscope. Traditional laparotomy exploratory incision was used in the laparotomy group. The operation time, the first postoperative oral feeding time, postoperative full oral feeding time [postoperative oral feeding volume reaching 150 mL/(kg·d)], the length of hospital stay, and mortality and incidence of complications were compared between the two groups.

    Results

    ·There was no significant difference between the laparoscopic group and laparotomy group in age, gender, weight, premature infant, low birth weight, other systems malformation and pathological type. There was no significant difference in operation time between the laparoscopic group and laparotomy group [(77.0±24.0) min vs (82.0±24.0) min]. The first postoperative oral feeding time, postoperative full oral feeding time [postoperative oral feeding volume reaching 150 mL/(kg·d)], and the length of hospital stay in the laparoscopic group were shorter than those in the laparotomy group [(13.3±7.2) d, (19.1±8.1) d, (22.1±8.5) d vs (17.2±7.8) d,(23.7±10.6) d, (27.0±11.8) d, all P <0.05]. There was no significant difference between the laparoscopic group and laparotomy group in mortality (1/66 vs 2/24) and incidence of complications (7/66 vs 6/24).

    Conclusion

    ·Laparoscopic surgery is a safe and effective method in the diagnosis and treatment of neonatal high jejunal atresia/stenosis.

    Table and Figures | Reference | Related Articles | Metrics
    Research progress of mitochondrial Lon protease and its related diseases
    YANG Shuo-yao1, 2, QI Zi-yi3, XIANG Jun4
    JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY (MEDICAL SCIENCE)    2020, 40 (5): 683-687.   DOI: 10.3969/j.issn.1674-8115.2020.05.021
    Abstract532)      PDF(pc) (7628KB)(370)       Save
    Lon protease (LON) is a highly conserved ATP-dependent serine protease, which is responsible for the decomposition and elimination of abnormal proteins. As an important executor of intracellular environment stability, LON can degrade misfolded and damaged proteins together with proteasome to ensure the high quality of proteins in vivo, especially in the maintenance of mitochondrial function. At the same time, the physiological function of LON also has an important effect on cell survival under various stresses. Recent studies have shown that the abnormal expression or activity of LON is involved in the occurrence and development of many diseases such as neurodegenerative diseases, diabetes mellitus, myocardial ischemia, cerebral ischemia and tumors. This review focuses on the structure and the function of LON, the relationship between abnormal expression and diseases, and the research progress of LON activity intervention, in order to provide ideas for clinical diagnosis and treatment of related diseases.
    Related Articles | Metrics