Objective To study the influence of recipient tolerogenic dendritic cells(DCs) loaded with donor renal antigen on renal allografts survival in rats.Methods Bone marrow derived DCs of Lewis rats were loaded with antigens from donor kidney of BN rats and transferred with AdvCTLA-4Ig to generate tolerogenic DCs.The tolerogenic DCs were injected into the Lewis recipient 24 h before BN→Lewis kidney transplantation(treatment group).Survival time of renal allografts was observed and splenic cell reaction of the recipients to donors and the third party antigens were assayed by means of MTT on the 20~(th)postoperative day.Results Survival time of renal allografts in treatment group was prolonged significantly as compared with controls ((62.1)?(13.7) days vs(8.6)?(0.9) days,P

OBJECTIVE: To explore the change of nasal ventilation function in a group of SDB patients and its relationship to PSG parameters. METHOD: One hundred twenty-eight controls, 11 habitual snorers, 33 cases of mild-moderate OSAHS and 33 cases of severe OSAHS were examined. NN1 Rhinospirometer was used to measure unilateral nasal respiratory capacity (NC(un)) and bilateral nasal respiratory capacity (NC(bi)), and the nasal partitioning ratio (NPR) can be calculated. NR6 Rhinomanometry was used to measure total nasal inspiratory and expiratory resistance (TNRi, TNRe). A1 acoustic rhinometry was used to measure distances of the two notches to the nostril (MD1, MD2), cross-sectional areas of the two notches (MCA1, MCA2) and nasal volume from 0-5 cm (NV(0-5)). Moreover, make the correlational analysis on different index of nasal functional tests and PSG. RESULT: (1) Significant group differences were shown in NPR (P < 0.01). (2) TNRi and TNRe were statistical different among the groups (P < 0.01 or P < 0.05). (3) There are significant difference on MD1, MCA1, MCA2, NV(0-5) in male, but just on MD1 in female. (4) There was no correlation between PSG parameters and nasal functional parameters in SDB patients. But for certain subgroup analysis in female patients with a body mass index below 25, minimum oxygen saturation correlated significantly with MCA2 (r = 0.688, P < 0.05), arousal index correlated significantly with MCA1 (r = 0.543, P < 0.05). CONCLUSION The nasal anatomical structure and physiological function contribute to the pathogenesis of OSAHS, which may play a larger role in non-obese female patients.
Adult ; Aged ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Nose ; physiopathology ; Rhinomanometry ; Rhinometry, Acoustic ; Sleep Apnea Syndromes ; physiopathology ; Young Adult

Due to the subjective and objective constraints of universities in China,PBL Teaching Mode failed to gain its popularity in China's medical education.In its teaching reform,Guangzhou Medical University put forward a new teaching model--Web-based PBL Teaching Mode(hereinafter referred to as WPBL).by integrating the classical concept of PBL education with the real situation of the university and carried it out among students in bilingual classes of Clinical Medicine.The resuIts showed that by effectively overcoming the difficulties during the implementation of classical PBL teaching,Web-based PBL Teaching Mode not only succeeded in achieving the teaching objectives,but also improved the learning efficiency and utilization of teaching resources greatly by means of network technology.

Objective To further investigate the effect of sinomenine (SIN) on TNF-α-induced VCAM-1 expression in human umbilical vein endothelial cells (HUVECs). Methods HUVECs were isolated from freshly collected umbilical cords. Positive control samples were stimulated with TNF-α, but free of SIN. Negative control samples were treated in the same way, but without TNF-α and SIN. Experimental samples were co-cultured with TNF-α and SIN at various concentrations (0.25, 0.5, and 1.0 mol/L), or TNF-α and dexamethasone (Dex) at concentration of 1.0×10-6 mol/L, or TNF-α with Dex (at concentration of 1.0×10-6mol/L) and SIN at different concentrations (0,25, 0.5, and 1.0 mmol/L) (co-treated groups). VCAM-1 expression was detected by flow cytometry (FCM). Results SIN inhibited expression of VCAM-1 in TNF-α-induced HUVECs, the best effect was shown in the 1.0 mmol/L SIN treated group. VCAM-1 decreased more markedly in the co-treated groups. Conclusion SIN inhibits TNF-α-induced VCAM-1 expression on HUVECs in vitro, and SIN maybe synergistic with Dex in inhibiting TNF-α-induced VCAM-1 expression on HUVECs in vitro.

The motor function of the trunk in 10 hemiplegic patlents was evaluated with Biodex Sys- tem Ⅱisokinetic testing aparatus. The result shows that the strength of flexors and extensors of the trunk,especially the flexors,becomes weaker(The ratio of flexors to extensors is less than 1).The patients weretreated with a series of the trunk retraining methods. The motor function of the trunk was improved aftertreatment(P<0.01 ).The total motor function(Fugl-Meyer Assessing Scale)also makes significant progress(P<0.01).The study proposes that the retraining and regaining of the trunk motor function in hemiplegiais quite important not only to the trunk but also to total motor function.

Objective To study the effect of mitogen-activated protein kinas/extracellular signalregulated kinase (MAPK/ERK) signaling pathway on cell proliferation modulated by Sonic Hedgehog (Shh) signaling in fibroblast-like synoviocytes (FLS) isolated from patients with active rheumatoid arthritis (RA).Methods The synovial tissue were collected by the synovial arthroscopic debridement or arthroscopic synovectomy of RA patients with active disease activity [disease activity score(DAS)28 ≥3.2].The RA-FLS were primarily cultured by the explanted culture,and then were treated with Shh agonist purmorphamine,inhibitor cyclopamine or MAPK/ERK signaling pathway inhibitor U0126,respectively.Western blotting was used to examine the phosphorylation level of ERK 1/2 (p-ERK1/2),which was the critical protein of MAPK/ERK signaling.The cell proliferation activity was detected using cell proliferation and cytotoxicity kit-8 (CCK8),and the cell proliferation rate was detected using a flow cytometry.Analysis of variance and Kruskal-Wallis H(K) test were used for statistical analysis.Results Compared with the control group,purmorphamine transiently increased p-ERK1/2 protein at the concentration of 1 μmol/L,and the peak activations of p-ERK1/2 took place at 15 min (P＜0.01).Cyclopamine and U0126 decreased the expression ofp-ERK1/2 protein (P＜0.01).After the RA-FLS treated with purmorphmine(1 μmol/L)for 48 hours,the cell proliferation activity was (114±4)％ and the percentage of S phase cells was (8.39±0.60)％,which was significantly higher than those of the control group (100±0)％ (P＜0.01) and (3.29±0.69)％ (P＜0.01).After treated with cyclopamine (10 μmol/L) for 48 hours,the cell proliferation activity of RA-FLS was (89±1)％ (P＜0.05) and the percentage of S phase cells was (1.53±0.22)％ (P＜0.05).When co-treated with purmorphamine (1 μmol/L) and U0126 (10 μmol/L),the cell proliferative activity was (89±2)％ (P＜0.05) and the percentage of S phase cells was(1.07±0.25)％(P＜ 0.05).Conclusion Shh may promote proliferation of RA-FLS via modulating MAPK/ERK signaling,which in turn contributes to hyperplasia of synovium and ultimately leading to RA.

Objective: To study the anti-gout effect of active ingredients in Poecilobdella manillensis. Methods: Hypoxanthine was used to replicate mouse model of hyperuricemia, and xylene was used to induce mouse auricle swelling model. The hot plate method and writhing method were used to screen the active site of Poecilobdella manillensis, and then the active ingredients were screened. The material basis of anti-gout effect of Poecilobdella manillensis was observed. Results: The water-soluble fraction of Poecilobdella manillensis was the active site against gout, which could reduce the level of serum uric acid in hypoxanthine-induced hyperuricemic mice and inhibit xylene-induced auricular swelling in mice, deduce acetic acid-induced writhing reaction in mice and increase the hot plate pain threshold in mice; Hirudin was the main active ingredient in water-soluble parts. Poecilobdella manillensis active ingredient 0.8 g/kg and 0.4 g/kg and Poecilobdella manillensis residue 2.0 g/kg could significantly reduce serum uric acid levels. The serum uric acid levels decreased from232.73 ± 50.93 umol/L in model group to 140.70 ± 25.97 umol/L, 149.07 ± 39.28 umol/L, 176.45 ± 44.33 umol/L, respectively (P ＜ 0.01) . Poecilobdella manillensis active ingredients 0.8 g/kg, 0.4 g/kg and 0.2 g/kg and Poecilobdella manillensis residue 2.0 g/kg could significantly inhibit xylene-induced ear auricle swelling in mice. The swelling degree was inhibited from 22.80 ± 2.86 mg to 20.10 ± 2.18 mg, 19.80 ± 2.57 mg, 20.10 ± 1.66 mg and 20.85 ± 1.60 mg respectively (P ＜ 0.05) . Poecilobdella manillensis 0.8 g/kg active ingredient could significantly reduce the number of writhing mice caused by acetic acid. The number of times was reduced from 22.80 ± 2.86 times to 20.10 ± 2.18 times (P ＜0.05) . Conclusion: Poecilobdella manillensis anti-gout activity is in water-soluble parts, and Hirudin is the main active ingredient.

OBJECTIVE: To analyze the association between genetic polymorphisms of xenobiotic- metabolizing enzymes GSTM1, GSTT1, GSTP1 and susceptibility to laryngeal carcinoma from the Han people in Guangdong zone. METHOD: A case-control study was conducted involving 233 LSCC (laryngeal squamous cell carcinoma) patients and 102 healthy controls to investigate the association between polymorphisms of GSTM1, GSTT1, GSTP1 (Ile/Val) and LSCC from the Han people in Guangdong zone. All blood samples of the Han people from the Guangdong zone was analyzed with methods of PCR, ASA and the DNA sequencing technique with sequenator. We explored the association between polymorphisms and the clinical pathologic characteristics of LSCC. The data was processed with SPSS13.0. Odds Ratios (ORs) with 95% CI for relevancy intensity were calculated using binary logistic regression analysis. RESULT: The frequency of GSTM1(-) and GSTT1(-) genotype was higher in LSCC than that in healthy controls (OR = 2.61, 3.05, P < 0.01). There was synergic effect between GSTT1 (-) genotype and heavily smoking during carcinogenesis of LSCC (OR = 3.51, 95% CI 2.05-5.01; OR = 2.99, 95% CI 2.00-4.49). The frequency of GSTM1(-) and GSTT1(-) genotype was higher in LSCC whose family had carcinoma history. The frequency of advanced LSCC was higher in patients who were with GSTM1(-) and GSTT1 (-) genotype (P < 0.05). There was no difference of the frequency of GSTP1(I le/Val) genotype between and in healthy controls (P > 0.05). CONCLUSION There may be an association between the susceptibility to carcinoma and GSTT1(-), GSTM1(-) genotype. The GSTT1(-) polymorphism c gene cooperating with heavily smoking boost up the susceptibility of individual to laryngeal carcinoma. The GSTM1(-) polymorphism c may not cooperating with smoking during carcinogenesis of LSCC in the Han people in Guangdong zone. The morphisms of GSTT1 and GSTM1 gene may affect the carcino-genesis of LSCC in the Han people in Guangdong zone. There may be no association between the susceptibility to laryngeal carcinoma and the GSTP1(Ile/Val) type.
Adult ; Aged ; Aged, 80 and over ; Asian Continental Ancestry Group ; genetics ; Case-Control Studies ; China ; epidemiology ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Glutathione S-Transferase pi ; genetics ; Glutathione Transferase ; genetics ; Humans ; Laryngeal Neoplasms ; epidemiology ; ethnology ; genetics ; Male ; Middle Aged ; Polymorphism, Genetic

Objective:To develop and internally validate a fall related injury risk nomogram in of patients in Patients in hospital.Methods:Patients who fall during the hospital stay from a grade-three general hospital of Zhejiang province were recruited. Data were collected from January 2014 to December 2019. Data was collected after patients fall in hospital, including age, sex, and 18 other predictive factors. The LASSO regression model and multivariable logistic regression analysis were applied to build a predicting model. Discrimination and calibration of the predicting model were assessed using the C-index and calibration plot. Internal validation was assessed using the bootstrapping validation.Results:Of the 243 patients included in the study, 70 patients had fall related injury. The fall related injury probability was 28.81%. Predictors contained in the prediction nomogram included age≥60, dysfunction, combined utilization of special drugs, no-escort, hypocalcemia. The model displayed good discrimination with a C-index of 0.823 (95% confidence interval 0.756-0.875) and good calibration. High C-index value of 0.803 could still be reached in the interval validation.Conclusion:This fall related injury risk nomogram in of patients in Patients in hospital incorporating the age≥60, dysfunction, combined utilization of special drugs, no-escort, hypocalcemia could be conveniently used to predict fall related injury risk of patients in hospital.

Objective:To screen the aging genes closely associated with pelvic organ prolapse(POP)by bioinformatics techniques,and to clarify the potential clinical significance and value of key genes.Methods:Gene Expression Omnibus(GEO)Database was used to download the datasets GSE53868 and GSE151188 for POP-related genes with the keyword"pelvic organ prolapse".The aging-related genes were obtained from Aging Atlas,CellAge,and the Human Ageing Genomic Resources(HAGR)Databases;the intersection of genes related with POP in two groups provided a list of differentially expressed genes(DEGs)associated with aging in POP;gene Set Enrichment Analysis(GSEA)was conducted with R software version 4.2.1;Gene Ontology(GO)functional enrichment analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)signaling pathway enrichment analysis of DEGs were conducted by the Database for Annotation,Visualization and Integrated Discovery(DAVID);the protein-protein interaction(PPI)network was constructed with Cytoscape 3.9.1 software;the top 10 Hub genes were selected by cytoHubba plugin;the infiltration of 22 types of immune cells in the patients in POP group and control group was analyzed by CIBERSORT deconvolution method using R software;the key genes were further screened by LASSO regression algorithm;the correlation and diagnostic efficacy between key genes and immune cell infiltration were analyzed.Results:From the Aging Atlas,CellAge,and HAGR Databases,724 aging-related genes were identified.Intersection with the POP expression profile yielded an aging gene expression matrix related to POP containing 624 genes,and 29 POP-related DEGs were identified after differential analysis,including 2 upregulated genes and 27 downregulated genes.The GSEA results showed that the upregulated pathways were mainly related to diabetes and cellular senescence,whereas the downregulated pathways included Alzheimer's disease and hypoxia-inducible factor-1(HIF-1)signaling pathways.The GO functional enrichment analysis mainly enriched in the biological processes such as the response of the cells to lipopolysaccharide,inflammatory response,and negative regulation of cell proliferation.The KEGG signaling pathway enrichment analysis mainly enriched in interleukin-17(IL-17),tumor necrosis factor(TNF),and nuclear factor-kappa B(NF-κB)signaling pathways.The PPI network analysis got 10 Hub genes including interleukin-6(IL-6),interleukin-1B(IL-1B),prostaglandin-endoperoxide synthase 2(PTGS2),and NF-kappa-B inhibitor alpha(NFKBIA).The CIBERSORT deconvolution method results showed a relatively higher infiltration proportion of neutrophils and activated mast cells in the patients in POP group,the activated mast cells had a positive correlation with most of the DEGs(r>0.5)and the macrophages had a significant positive correlation with IL-1B(r>0.6).The key genes Jun D proto-oncogene(JUND),Snail homolog 1(SNAI1),amphiregulin(AREG),Lamin A/C(LMNA),and superoxide dismutase 2(SOD2)selected by LASSO regression analysis had high diagnostic efficacies,and the area under receiver operating characteristic curve(ROC)(AUC)were all greater than 0.75.Conclusion:During the aging process,the genes such as JUND,SNAI1,AREG,LMNA,and SOD2 may participate in the pathophysiology of POP through various pathways,including inflammation-related pathways,transcription regulation,and affecting collagen secretion and metabolism,thereby influence the connective tissue support function and promote the occurrence and development of POP.