Objective To investigate the relationship between serum solute carrier family 7 member 11(SLC7A11)and Janus kinase 2(JAK2)levels and the severity and prognosis of acute non-variceal upper gas-trointestinal bleeding(ANVUGIB).Methods A total of 108 patients with ANVUGIB who were treated in the hospital from April 2019 to April 2023 were selected and divided into severe group(31 cases),moderate group(44 cases)and mild group(33 cases)according to the severity of ANVUGIB.The patients were divided into poor prognosis group(41 cases)and good prognosis group(67 cases)according to their prognosis.An-other 50 healthy volunteers who underwent physical examination in the hospital during the same period were selected as the control group.Serum SLC7A11 and JAK2 levels were detected by enzyme-linked immunosor-bent assay.Spearman correlation analysis was used to analyze the correlation between serum SLC7A11 and JAK2 levels and Framingham risk score(FRS)and Glasweg-Blatchford bleeding score(GBS).Multivariate Logistic regression was used to analyze the influencing factors of poor prognosis in patients with ANVUGIB.Receiver operating characteristic(ROC)curve was used to analyze the predictive value of serum SLC7A11 and JAK2 for poor prognosis in patients with ANVUGIB.Results The serum SLC7A11 level was significantly lower and the serum JAK2 level was significantly higher in the three groups of ANVUGIB patients than in the control group(all P＜0.05).As the severity of the disease increased,the serum SLC7A11 level gradually de-creased,and the serum JAK2 level,FRS and GBS scores gradually increased(all P＜0.05).In ANVUGIB pa-tients,serum SLC7A11 level was negatively correlated with FRS and GBS scores,and serum JAK2 level was positively correlated with FRS and GBS scores(all P＜0.05).Compared with the good prognosis group,the poor prognosis group had significantly higher proportion of patients with bleeding volume＞400 mL,red blood cell distribution width,FRS score,GBS score,and JAK2 level,and significantly lower levels of hemoglo-bin and SLC7A11(P＜0.05).Bleeding volume＞400 mL and elevated JAK2 level were risk factors for poor prognosis in ANVUGIB patients,while elevated SLC7A11 level was a protective factor(all P＜0.05).The ar-ea under the curve of combined SLC7A11 and JAK2 in predicting poor prognosis of ANVUGIB patients was better than that of each index alone(Zcombination-SLC7A11=3.086,Zcombination JAK2=2.330,P=0.020,0.030).Conclu-sion The decrease of SLC7A11 level and increase of JAK2 level in patients with ANVUGIB can effectively e-valuate the severity and prognosis of patients,and the combination of the two can predict the prognosis of pa-tients with ANVUGIB.

AIM:To investigate the effects of curcumin on cardiac dysfunction induced by chronic restraint stress in a depression rat model.METHODS:Thirty-two Wistar rats weighing(200±20)g were randomly divided into control,model,low-dose curcumin,and high-dose curcumin groups(n=8 per group).The rats in model and curcumin groups were subjected to chronic restraint stress for 5 h daily at random time,while those in control group were maintained under normal conditions.Following daily stress exposure,the rats in low-and high-dose curcumin groups received 100 and 200 mg/kg curcumin daily,respectively,and those in control and model groups received the same volume of normal saline daily.The above treatments lasted for 28 d.Body weight of the rats was measured weekly.Sucrose preference test was performed on days 14 and 28 of the experiment.Serum corticosterone content was determined to evaluate depression.Histological changes of cardiac tissues were observed using HE and Masson staining.Echocardiography was conducted to examine heart function.The related mRNA and protein levels were detected using RT-qPCR and Western blot,respective-ly.RESULTS:Compared with control group,the rats in model group exhibited significantly slower weight gain(P<0.05),impaired sucrose preference(P<0.01),and increased corticosterone levels(P<0.01).HE staining revealed myo-cardial hypertrophy in model group but not in control group.Masson staining indicated significantly higher cardiac fibrosis in model group than control group(P<0.01).Immunohistochemical staining demonstrated a significant increase in posi-tive collagen type I expression(P<0.01).RT-qPCR results showed significantly elevated mRNA levels of inflammatory cytokines(tumor necrosis factor-α,interleukin-6,and interleukin-1β)and fibrosis factors(α-smooth muscle actin,colla-gen type I,and collagen type Ⅲ)in model group compared with control group(P<0.05 or P<0.01).Western blot re-vealed a significant increase in c-Jun N-terminal kinase(JNK)phosphorylation level in model group(P<0.01).Treat-ment with low-and high-dose curcumin reversed the above indicators.CONCLUSION:Curcumin treatment attenuated cardiac inflammation and fibrosis in rats subjected to chronic restraint stress,possibly by inhibiting JNK signaling pathway.

BACKGROUND: The addition of growth factiors is commonly applied to improve the osteogenic differentiation of stem cells. However, for human pluripotent stem cells (hPSCs), their complex differentiation processes result in the unknown effect at different stages. In this study, we focused on the widely used bone forming peptide-1 (BFP-1) and investigated the effect and mechanisms of its addition on the osteogenic induction of hPSCs as a function of the supplementation period. METHODS: Monolayer-cultured hPSCs were cultured in osteogenic induction medium for 28 days, and the effect of BFP-1 peptide addition at varying weeks was examined. After differentiation for varying days (0, 7, 14, 21 and 28), the differentiation efficiency was determined by RT–PCR, flow cytometry, immunofluorescence, and alizarin red staining assays. Moreover, the expression of marker genes related to germ layers and epithelial-mesenchymal transition (EMT) was investigated at day 7. RESULTS: Peptide treatment during the first week promoted the generation of mesoderm cells and mesenchymal-like cells from hiPSCs. Then, the upregulated expression of osteogenesis marker genes/proteins was detected in both hESCs and hiPSCs during subsequent inductions with BFP-1 peptide treatment. Fortunately, further experimental design confirmed that treating the BFP-1 peptide during 7–21 days showed even better performance for hESCs but was ineffective for hiPSCs. CONCLUSION The differentiation efficiency of cells could be improved by determining the optimal treatment period.Our study has great value in maximizing the differentiation of hPSCs by adding osteogenesis peptides based on the revealed mechanisms and promoting the application of hPSCs in bone tissue regeneration.

Objective : To investigate and analyze the root and root canal morphology of mandibular first molars (MFMs) in the Tibetan population using cone-beam computed tomography (CBCT) and to provide references for clinical root canal treatment in the Tibetan population. Methods: This study was reviewed and approved by the Ethics Committee, and informed consent was obtained from the patients. CBCT imaging data of 300 mandibular first molars from 300 Tibetan patients were included. Patient age, the number of roots in mandibular first molars were recorded. The morphology and incidence of mesial root and mesial root canals and the morphology and incidence of distal root and distal root canals were statistically analyzed by Vertucci classification. Results : There were 198 double-root teeth and 102 three-root teeth in the 300 mandibular first permanent molars. Among the three-rooted molars, 1 case had mesiolingual roots, and the rest had distolingual roots. The incidence rate of the distolingual root was 33.7%(101/300). The most common root canal configuration was Vertucci Ⅳ 65.7% (197/300), followed by Vertucci Ⅱ 20.3% (61/300) in the mesial roots. The overall incidence of middle mesial canals (MMCs) was 6% (18/300), with the highest incidence of MMCs in the 20-40 year-old group at 9% (9/100). The distal roots canals of single-distal-rooted mandibular first molars were mainly Vertucci Ⅰ 66.8% (133/199), followed by Vertucci Ⅱ 14.6% (29/199) and Vertucci Ⅳ 11.6% (23/199). For the mandibular first permanent molars with two distal roots, 96% (97/101) of the distal buccal roots and 100% (101/101) of the distal lingual roots were Vertucci Ⅰ root canals. Conclusion The root and root canal morphology of mandibular first permanent molars in a Tibetan population is complex and variable. Approximately one-third of patients have distolingual roots, and clinicians should carefully explore the root canals under the guidance of CBCT.

Objective: To investigate the effect of acid-sensing ion channel 1 (ASIC1) gene knockout on articular cartilage injury in adjuvant arthritis (AA) of mice． Methods: Wild-type mice and ASIC1 knockout mice were divided into normal group and model group．Arthritis score was performed by observing the inflammation of paws，and the right paw swelling was measured．HE staining，immunohistochemistry，TUNEL and ELISA were used to detect the injury of articular cartilage and arthritic inflammation. Results : The arthritis score and paw swelling of AA mice with ASIC1 knockout was lower than that of the AA wild-type mice．AA mice with ASIC1 knockout showed less destruction and increased expression of collagen-Ⅱin articular cartilage． Moreover ，the lower apoptosis rate was observed by TUNEL assay in AA mice with ASIC1 knockout by comparing with AA wild-type mice．Furthermore，ELISA assay showed that the levels of IL-1 β、TNF-α in the serum decreased in AA mice with ASIC1 knock- out． Conclusion Knockout of ASIC1 may have protective effect on articular cartilage injury.

Objective: To understand the awereness and health needs of parents in regards to infectious diseases in kindergartens in Chengdu, and to provide a reference for carrying out targeted health education on infectious diseases. Methods: The parents of kindergarten children in Chenghua District of Chengdu was selected by convenient sampling, and a self designed questionnaire was used. Results: The rate of awareness among parents regarding pediatric infectious diseases was 42.0%, among which the awareness rate of "treatment measures following a dog bite" was the highest (99.6%), and "the awareness rate of infectious disease classifications in China" was the lowest (26.7%). The awareness rate was related to family role, education level, occupation and income level ( χ 2=10.81, 71.81, 93.78, 25.17, P <0.05). The survey examined the demand for knowledge regarding pediatric infectious disease prevention and control, and revealed that parents primarily obtained such information from the school class group ( 85.5 %). The most desirable way of obtaining relevant information was from information provided by professional institutions ( 96.6 %), the infectious disease that parents most wanted to know about was the 2019 novel coronavirus (91.9%), and the most desirable time to acquire knowledge about infectious diseases depended on the seasonal arrangement of infectious diseases (67.5%). Conclusion The awareness rate of parents about children s infectious diseases is in the middle level, and the channels for acquiring the knowledge about infectious diseases are relatively limited. Schools can carry out targeted health education in order to raise the awareness rate of parents of preschool children about children s infectious diseases.

Objective:To explore the effect of mind map on health education of children with asthma and their parents.Methods:Ninety children with asthma admitted for the first time were divided into observation group (45 cases) and control group (45 cases) by random digits table method. The control group used the traditional health education method, and the observation group used the mind map pattern health education method. The drug compliance of the two groups was evaluated before discharge and at the 1st, 2nd,3rd month after discharge, and the satisfaction of the children and parents and therapeutic effect of the two groups were compared at the time of discharge.Results:There was no significant difference in treatment adherence between the two groups before discharge ( P > 0.05). The treatment adherence at the 1st, 2nd,3rd month after discharge was (7.22±1.31), (7.58±1.55), (7.78±2.11) points in the observation group, and (6.98±2.01), (7.01±1.58), (7.11±2.48) points in the control group, there were significant differences between the two groups ( t values were 4.426, 3.884, 5.233, all P < 0.05). The satisfaction of the children and parents was (96.01±3.45) points in the observation group,and (78.13±2.39) points in the control group, there was significant difference between the two groups ( t value was 38.223, P < 0.01). The total effective rate was 77.8%(35/45) in the observation group,and 64.4%(29/45) in the control group, there was significant difference between the two groups ( χ2 value was 4.013, P < 0.05). Conclusions:Health education integrated with mind map can effectively improve the satisfaction of children and their parents, and improve the drug adherence and therapeutic effect of children.

To use hairy roots for producing medicinal ingredients of Phytolacca americana L. we studied the factors influencing the induction and in vitro culture. Hairy roots could be incited from the veins of cut surface (morphological lower) of P. americana L. leaf explants around 18 days after infection with the strain of Agrobacterium rhizogenes ATCC15834. The highest rooting rate, 70%, was obtained when leaf explants were pre-cultured for 1 day, infected for 20 min, and co-cultured for 4 days. The transformation was confirmed by PCR amplification of rolC of Ri plasmid and silica gel thin-layer chromatography of opines from P. americana L. hairy roots. All the hairy root lines could grow rapidly on solid exogenous phytohormone-free MS medium. Among the 9 hairy root lines, the hairy root line 2 had most rapid growth, most branched lateral roots and most intensive root hair; the root surface of some hairy root lines seemed purple or red, while that of the other hairy root line appeared white. Among liquid media MS, 1/2MS, B5 and 6,7-V tested, the best growth for hairy root lines was attained in liquid exogenous phytohormone-free MS medium. Compared with exogenous phytohormone-free MS medium, 6,7-V medium was better for synthesis and accumulation of esculento side A in hairy roots. The established optimal conditions for induction and in vitro culture of P. americana hairy roots had laid an experimental and technological foundation for production of medicinal constituents esculento side A from large scale culture of hairy roots.

Objective To investigate the stigma of patients with rectal cancer and permanent enterostomy and its influencing factors. Methods Totally 101 patients with rectal cancer and permanent enterostomy were selected from six tertiary hospitals of a province in central China from September 2013 to October 2014 by convenience sampling method. The questionnaire survey and social impact scale( SIS) were used to investigate participants′ general information and stigma issues. T-test,analysis of variance (ANOVA),and linear multivariate stepwise regression analysis were used to analyze the influencing factors of stigma. Results The total SIS score of 101 participants was( 60.7±10.4). The scores for social exclusion, economic discrimination,intrinsic stigma,and social isolation were( 21.8±4.3),(8.0±1.9),(12.7±2.5) and (18.2±3.6). The scores of all dimensions in SIS for patients with rectal cancer and enterostomy were higher than general cancer patients. The top five items were:need more concern,adverse impact on career,embarrassing conditions,economic burden,and worse health status. Single factor analysis and multiple-factor analysis indicated that the communication with doctors and nurses had an impact on patients′ stigma level(P < 0.05). Conclusions The stigma of patients with rectal cancer and enterostomy was at a moderate level,and it can be influenced by the communication with medical staff. Thus,patients should be taught about the nursing skills and mental adjustment methods before their discharge. After their discharge,continuous nursing care and other supports( e.g. providing professional information,organizing communicating and educational activities,and cooperating with community nurses) should be achieved.

Objective To investigate the effect of resveratrol (Res) on paraquat (PQ)-induced acute lung injury (ALI) and mortality in mice and the mechanism of nuclear factor-κB (NF-κB) inflammatory pathway. Methods Sixty-eight healthy male ICR mice with grade SPF were enrolled, among them 20 mice were used for mortality observation (n = 10), and other 48 were used for determination of related parameters (n = 6). The mice were randomly divided into four group s: normal saline (NS) control group, Res control group, PQ group and PQ + Res group. The mice in the latter two groups were subdivided into 6, 24, 72 hours subgroups. The PQ poisoning model of mice was reproduced by one injection of 30 mg/kg PQ intraperitoneally. The mice in PQ + Res group were given 60 mg/kg Res intraperitoneally on the contralateral side after PQ injection. The mice were sacrificed at 6, 24, 72 hours after PQ poisoning, and lung tissue was harvested. The serum levels of tumor necrosis factor-α (TNF-α), interleukins (IL-6 and IL-1β) were determined by enzyme linked immunosorbent assay (ELISA). The pathological changes in lung tissue were observed with electron microscopy. Apoptosis cells in the lung were identified by terminal dexynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) for the estimation of apoptosis rate. The protein expression of NF-κB p65 was determined by Western Blot. Results Compared with PQ group, the death number of mice at 48, 72, 96 hours in PQ + Res group was slightly decreased (0 vs. 2, 2 vs. 5, 4 vs. 6) but without statistically significant difference (all P > 0.05). Under electron microscope, the lung injury in PQ group was severer than that in NS control group, and Res was found to be able to alleviate the lung injury. Compared with NS control group [(2.45±0.61)%], the apoptosis rate at 6 hours in PQ group was significantly increased [(8.42±1.48)%], and peaked at 72 hours [(21.23±3.47)%]. Res could decrease the apoptosis rate after PQ poisoning [6 hours: (5.56±1.31)% vs. (8.42±1.48)%, 24 hours: (11.14±2.07)% vs. (16.88±2.96)%, 72 hours: (13.28±2.32)% vs. (21.23±3.47)%, all P < 0.05]. The serum levels of TNF-α, IL-6, and IL-1β, and NF-κB p65 in lung tissue were all markedly increased after PQ poisoning, and they were significantly decreased after Res intervention as compared with those of PQ group [TNF-α (ng/L): 2.62±0.29 vs. 4.06±0.74 at 6 hours, 3.98±0.41 vs. 6.79±0.80 at 24 hours, 5.06±0.75 vs. 11.00±0.75 at 72 hours; IL-6 (ng/L): 14.19±1.54 vs. 16.55±1.24 at 6 hours, 13.21±1.37 vs. 19.73±0.85 at 24 hours, 13.72±0.56 vs. 22.45±0.72 at 72 hours; IL-1β (ng/L): 8.54±1.64 vs. 12.59±0.66 at 6 hours, 10.15±0.29 vs. 16.24±1.03 at 24 hours, 16.14±0.70 vs. 19.55±0.56 at 72 hours; 6-hour NF-κB p65: (1.34±0.07) folds vs. (1.86±0.11) folds when the expression in NS control group was represented as 1, all P < 0.05]. Conclusions Res cannot lower the mortality in mice with PQ poisoning, but it seems to be able to attenuate PQ-induced ALI and cell apoptosis. The mechanism responsible for the latter maybe the inhibitive effect of Res on NF-κB p65 translocation and cytokines production.