Objective: To investigate the chemical constituents of Swertia chirayita. Methods: Column chromatography, such as silica gel, MCI, Sephadex LH-20 were used to isolate and purify the compounds. Physicochemical properties and spectroscopic methods were used to elucidate their structures. Results: Twelve compounds, including 2 xanthones, 4 triterpenoids, 3 secoiridoids, and 3 other compounds, the chemical constituents were isolated from the ethyl acetate fraction from 85% ethanol extract of S. chirayita, and identified as bellidifolin (1), norbellidifolin (2), oleanolic acid (3), 4-epi-hederagenin (4), 2-epi-corosolic acid (5), ursolic acid (6), amarogentin (7), swerimilegenin I (8), erythrocentaurin (9), pyrocatechol (10), syringic acid (11), and 4-hydroxy-3-methoxybenzoic acid (12). Conclusion: Compounds 4, 5, and 11 are isolated from genus Swertia for the first time, compounds 8 and 9 are found from S. chirayita for the first time.

【Objective】To investigate the mechanism of action of long non-coding RNA highly up-regulated in liver cancer（LncRNA HULC）on the growth of glioblastoma U87 cells in vitro and in vivo.【Methods】The cultured glioblastoma U87 cells were divided into four groups：overexpression group（HULC-over）and its vector control group（VEC），silent expression group（HULC- siRNA）and its negative control group（NC）.Quantitative real- time polymerase chain reaction PCR（qRT-PCR）was used to verify the expression levels of HULC. CCK8 proliferation assay and colony formation assay were adopted to monitor the proliferation of glioblastoma U87 cells. Flow cytometry was utilized to detect the apoptosis of glioblastoma U87 cells. By injecting U87 cells，we divided the orthotopic xenograft mouse model into HULC- over group（n=10），VEC group（n=10），HULC-siRNA group（n=10）and NC group（n=10）accordingly. The survival of the mice in each group was observed. The expression of Ki67 was analyzed by immunohistochemistry. 【Results】 The expression level of HULC was significantly higher in HULC-over group than that in VEC group and significantly lower in HULC-siR NA group than that in NC group（P < 0.01）. The cell proliferation ability was significantly increased in HULC-over group compared with that in VEC group and significantly decreased in HULC- siRNA group compared with that in NC group（P < 0.01 on days2，3and4）. The colony formation rates in VEC group，HULC-over group，NC group and HULC-siRNA group were，respectively，（34.47 ± 1.56）% ，（95.4 ± 2.74）% ，（23.83 ± 0.92）% and （10.23 ± 0.61）% ，which revealed that overexpression of HULC elevated the colony formation rate and silencing expression of HULC reduced the colony formation rate（P < 0.01）. The early apoptosis rates in VEC group，HULC- over group，NC group and HULC- siRNA group were，respectively，（3.55±0.56）% ，（0.09±0.01）% ，（2.89±0.67）% ，and（7.13±0.14）% ，which showed that overexpression of HULC elevated the early apoptosis rate and silencing expression of HULC reduced the early apoptosis rate （P <0.01）. The survival curve of nude mouse indicated shorter survival time in HULC-over group than that in VEC group and longer survival time in HULC-siRNA group than that in NC group（P < 0.05）. Ki67 protein expression was up-regulated in the HULC-over group compared with that in VEC group and down-regulated in the HULC-siRNA group compared with that in NC group（P < 0.05）.【Conclusion】LncRNA HULC can enhance the growth of glioblastoma U87 cells in vitro and in vivo.

BackgroundThe influence of different right ventricular lead locations on ventricular arrhythmias (VTA) in patients with a cardiac resynchronization therapy (CRT) is not clear. This study aimed to evaluate the influence on VTA in patients with a CRT when right ventricular lead was positioned at the right ventricular middle septum (RVMS) and the right ventricular apical (RVA).

MethodsA total of 352 patients implanted with a CRT-defibrillator (CRT-D) between May 2012 and July 2016 in the Department of Cardiology of Anhui Provincial Hospital were included. Two-year clinical and pacemaker follow-up data were collected to evaluate the influence of the right ventricular lead location on VTA. Patients were divided into the RVMS group (n = 155) and the RVA group (n = 197) based on the right ventricular lead position. The VTA were compared between these two groups using a Kaplan-Meier curve and Cox multivariate analysis.

ResultsWhen the left ventricular lead location was not considered, RVMS and RVA locations did not affect VTA. However, the subgroup analysis results showed that when the left ventricular lead was positioned at the anterolateral cardiac vein (ALCV), the RVMS group had an increased risk of ventricular arrhythmias and appropriate defibrillation (hazard ratio [HR] = 3.29, P = 0.01 and HR = 4.33, P < 0.01, respectively); when the left ventricular lead was at the posterolateral cardiac vein (PLCV), these risks in the RVMS group decreased (HR = 0.45, P = 0.02 and HR = 0.33, P < 0.01, respectively), and when the left ventricular lead was at the lateral cardiac vein, there was no difference between the two groups. In regard to inappropriate defibrillation, there was no significant difference among all these groups.

ConclusionsWhen the left ventricular lead was positioned at ALCV or PLCV, the right ventricular lead location was associated with VTA and appropriate defibrillation after CRT. Greater distances between leads not only improved cardiac function but also may reduce the risk of VTA.

Aim: To investigate the effect of resolvin Dl (RvDl) on DSS-induced mice colitis model and the possible mechanism. Methods: C57BL/6 mice were divided into four groups: normal group, control group, dextran sodium sulfate (DSS) model group, and RvDl group. RvDl was dissolved in physiological saline and intraperitoneally injected into experimental mice on 2nd day, 4th day and 6th day. The disease activity index (DAI), histological index (HI), myeloperoxidase (MPO) were detected using Evans blue test, electron microscopy and cytokine level test. The expression differences of NLRP3, ASC, caspase-1, pro-IL-1 β and other related genes were analyzed. Results: The DAI score, HI score, MPO activity level, and pro-inflammatory cytokine in colon tissue homogenate were significantly raised in DSS group compared with those of the normal group (P < 0. 05). The above indexes of RvDl experimental group were significantly reduced(P < 0. 05). At the same time, the expressions of NPRP3 pathway-related proteins, such as NLRP3, ASC, caspase-1 and pro-IL-1 (3, increased in DSS group(F < 0. 05); the expression of the above proteins decreased after RvDl treatment(P < 0. 05). Conclusions: RvDl can mitigate inflammatory response in DSS-induced colitis mice, which may involve the inhibition of RvDl of the NLRP3 inflammasome signaling pathway.

Objective: To investigate the prognostic factors of patients with stages I-III left-sided colon cancer (LCC) versus right-sided colon cancer (RCC) receiving radical surgery. Methods: A retrospective analysis of clinical data from 332 patients with stages I-III colorectal cancer (CRC) who underwent radical surgery in Anhui Provincial Hospital, Anhui Medical University between February 2008 and February 2012 was conducted. The differences in clinicopathological characteristics by tumor location (RCC vs LCC) were examined by using χ2 test. The comparisons of overall 5-year survival rate between RCC and LCC within each stage and for all stages were done by using Kaplan-Meier method. The univariate analysis of prognosis was performed by using log-rank test, and the multivariate analysis was performed by using COX regression model. Results: The overall 5-year survival rate of all patients was 69.9%. The LCC patients had significantly higher overall 5-year survival rate than RCC patients (72.6% vs 66.9%, P = 0.020). The stage III LCC patients had significantly higher overall 5-year survival rate than the stage III RCC patients (62.5% vs 52.2%, P = 0.018), but no significant difference in overall 5-year survival rate was found between stage I or II RCC and LCC patients (P > 0.05). There were significant differences in T stage, histologic type, degree of differentiation, tumor size, hemoglobin, albumin, fibrinogen and carcinoembryonic antigen (CEA) between RCC and LCC patients (all P < 0.05). The univariate analysis showed that tumor location, T stage, N stage, histologic type, degree of differentiation, tumor size, hemoglobin, albumin, fibrinogen and CEA were significantly correlated with overall 5-year survival rate of CRC patients (all P < 0.05). Multivatiate analysis showed that N stage, histologic type, degree of differentiation, hemoglobin, albumin, fibrinogen and CEA were independent prognostic factors of CRC (all P < 0.05). Conclusion: For patients with stages I-III CRC treated with radical surgery, the factors of higher tumor N stage, mucinous adenocarcinoma/signet ring cell carcinoma, poorly differentiated carcinoma, anemia, hypoproteinemia, fibrinogen level more than 4 g/L and CEA level more than 10 ng/mL indicate a poor prognosis. The significant differences in clinicopathological characteristics and prognosis are found between RCC and LCC, but the tumor location is not an independent prognostic factor.

Objective: To evaluate the clinical significance of aluminum phosphate gel in the early prevention of gastrointestinal reactions caused by erythromycin, in order to obtain better clinical treatment for children. Methods: The clinical data of 110 children with Mycoplasma pneumonia from January 1, 2015 to December 31, 2016 in the pediatric ward of Anhui Provincial Hospital were collected.According to the treatment methods, the patients were divided into the observation group(60 cases) and the control group(50 cases). The observation group was mainly treated with erythromycin combined with aluminum phosphate gel, some of which were given cephalosporin anti-infection, montelustra sodium to reduce airway hyperreaction, hormone antiasthmatic, atomization inhalation and other supportive symptomatic treatment.The control group was mainly treated with erythromycin, some of which were given cephalosporin anti-infection, montelustra sodium to reduce airway hyperreaction, hormone antiasthmatic, atomization inhalation and other supportive symptomatic treatment.The age, body weight, pre-hospital course, white blood cell count(WBC), CRP, alanine aminotransferase(ALT), creatinine(Cr), urea nitrogen(BUN), length of stay, sex, montruster sodium granules, atomization, antibiotics, hormone use and gastrointestinal adverse reactions(abdominal pain, vomiting, nausea, diarrhea, inappetence) were compared between the two groups. Results: A total of 110 children were selected, 60 cases in the treatment groups, including 38 males and 22 females, and the average age of children was (6.21 ± 2.26)years old.In the control group, there were 50 cases, including 23 males and 27 females, with an average age of (6.07 ± 2.61)years.The age, weight, pre-hospital course, WBC, CRP, ALT, Cr, BUN, days of hospitalization, etc.between the two groups had no statistically significant differences (all P>0.05). There were no statistically signifiant differences between the two groups in terms of sex, montruster sodium particles, atomization, antibiotics, hormone use, etc.(all P>0.05). The differences of abdominal pain, vomiting, nausea and diarrhea between the two groups were not statistically significant (all P>0.05). However, the difference of inappetence between the two groups was statistically significant (P<0.05). The incidence rate of gastrointestinal side effects(abdominal pain, vomiting, nausea, diarrhea, inappetence) of the observation group was 18.3 %(11/60), which of the control group was 48.0%(24/50), the difference was statistically significant between the two groups (χ²=11.064, P<0.05). Conclusion Aluminum phosphate gel can prevent gastrointestinal reactions induced by erythromycin in the treatment of Mycoplasma pneumonia, so that children get better treatment.

Objective:To explore the effect of PRECEDE-PROCEED model on health behavior and quality of life of patients after total hip arthroplasty. Methods:From February to December, 2018, 103 patients who underwent primary total hip arthroplasty were divided into control group (n = 51) and intervention group (n = 52). The control group received routine perioperative guidance, while the intervention group received PRECEDE-PROCEED model in addition, in accordance to the nine links of the model, multi-dimensional intervention measures should be formulated with tendency factors, contributing factors and strengthening factors as the core. They were followed up for six months after discharge, and were assessed with Health Promoting Life style Profile II (HPLP II) and the MOS Item Short From Health Survey (SF-36) one, three and six months after discharge, respectively. Results:There was no significant difference in the scores of HPLP II and SF-36 between two groups at discharge (P > 0.05). The scores of HPLP II and SF-36 were higher than in the intervention group than in the control group one, three and six months after discharge (t > 2.307, P < 0.05). Conclusion:PRECEDE- PROCEED model could change the undesirable life behavior after operation, and improve the health behavior and quality of life of patients with total hip arthroplasty.

OBJECTIVE: To investigate the effect of nickel sulfate on cell survival rate and apoptosis of normal human liver L02 cells. METHODS: i) L02 cells in logarithmic growth phase were divided into 9 groups, each with 6 wells. L02 cells in each group were treated with 0, 100, 200, 300, 400, 500, 600, 700 and 800 μmol/L nickel sulfate. The survival rate of L02 cells was determined by CCK-8 assay after cells were treated for 0, 6, 12, 24, 48 and 72 hours. The nickel sulfate exposure dose and exposure time for subsequent experiments were selected based on the results of CCK-8 assay. ii) L02 cells in logarithmic growth phase were divided into control group, 100 and 300 μmol/L dose groups, and were exposed to 0, 100 and 300 μmol/L nickel sulfate for 12 hours, respectively. Western blot was used to detect the relative protein expression of B cell lymphoma/leukemia 2(BCL-2), Bcl-2 related protein X(BAX), caspase-3, phosphorylated RNA-dependent protein kinase-like endoplasmic reticulum kinase(p-PERK), phosphorylated eukaryotic translation initiation factor 2α(p-eIF2α), CCAAT/enhancer-binding protein homologous protein(CHOP) and glucose regulatory protein 78(GRP78). RESULTS: i) After treatment with nickel sulfate, the survival rate of cells decreased with the increase of dose and the prolongation of exposure time(all P values were <0.01). According to the half inhibitory concentration of nickel sulfate on L02 cells, the nickel sulfate exposure time in subsequent experiments was selected as 12 hours, and the exposure concentration was 100 and 300 μmol/L. ii) Compared with the control group, the relative expression of BCL-2 protein in L02 cells in the 100 and 300 μmol/L dose groups decreased(all P values were <0.05), while the relative protein expression of BAX, caspase-3 protein and ratio BAX/BCL-2 increased(all P values were <0.05). Compared with 100 μmol/L dose group, the relative expression of BCL-2 protein in L02 cells of 300 μmol/L dose group decreased(P<0.05), while the relative expression of BAX and caspase-3 protein and the ratio of BAX/BCL-2 increased(all P values were <0.05). Compared with the control group, the relative expression levels of p-PERK, p-eIF2α, CHOP and GRP78 protein in L02 cells were increased in 100 and 300 μmol/L dose groups(all P values were P<0.05). Compared with 100 μmol/L dose group, the relative expression levels of p-eIF2α, CHOP and GRP78 protein in 300 μmol/L dose group were increased(all P values were<0.05).CONCLUSION: Nickel sulfate can regulate the expression of apoptosis related proteins and PERK signaling pathway related proteins in L02 cells, aggravate apoptosis of L02 cells and decrease the cell survival rate.

Objective To investigate the prevalence of Schistosoma japonicum infection in wild mice in Shitai County, Anhui Province, so as to provide insights into precise control of the source of S. japonicum infections. Methods Wild mice were captured using the trapping method for three successive nights at snail-infested settings from Jitan Village of Jitan Township, and Shiquan Village and Xibai Village of Dingxiang Township, Shitai County, Anhui Province in June and October, 2018. All trapped wild mice were sacrificed and liver and mesenteric vein specimens were collected for detection of S. japonicum eggs using microscopy, while the fecal samples in mouse intestines were collected for identification of S. japonicum infections using Kato-Katz technique. In addition, the population density of trapped wild mice was estimated and the prevalence of S. japonicum infection was calculated in trapped wild mice. Results A total of 376 wild mice were trapped from three villages in Shitai County. The population density of trapped wild mice was 9.1% (376/4 124), and the prevalence of S. japonicum infection was 24.2% (91/376) in trapped wild mice. The highest prevalence of S. japonicum infection was detected in Shiquan Village of Dingxiang Township (30.1%), and the lowest prevalence was seen in Xibai Village of Dingxiang Township; however, there was no significant difference in the prevalence of S. japonicum infection in trapped wild mice among three villages (χ²= 4.111, P > 0.05). In addition, there was no significant difference in the prevalence of S. japonicum infection in wild mice captured between on June (26.8%, 34/127) and October (22.9%, 57/249) (χ² = 0.690, P = 0.406). The trapped wild mice included 6 species, including Rattus norvegicus, Niviventer niviventer, R. losea, Apodemus agrarius, Mus musculus and N. coning, and the two highest prevalence of S. japonicum infection was detected in R. losea (34.9%, 22/63) and R. norvegicus (31.2%, 44/141). Conclusions The prevalence of S. japonicum infections is high in wild mice in Shitai County, and there is a natural focus of schistosomiasis transmission in Shitai County.

We isolated and identified the symbiotic and adnascent microorganisms from an unidentified sponge collected from 10-meter-deep seawater of the Paracel Islands in China. A total of 16 strains were obtained and identified. Through bacteriostatic activity assay, one of the strains, Dermacoccus sp. X4, was found to effectively inhibit the growth of Staphylococcus aureus. Subsequently, its secondary metabolites were purified by silica gel partition, octadecylsilane (ODS) reverse phase, Sephadex™LH-20 size exclusion, and C18 reverse phase chromatography. Using liquid chromatography, mass spectrometry, and nuclear magnetic resonance, three of the purified compounds were structurally characterized to be one 3-(4-hydroxybenzyl) hexahydropyrrolo [1,2-a]pyrazine-1,4-dione and two indole acid glycerides. This is the first report about indole acid glyceride isolated from microbial secondary metabolites, enriching marine drug candidate resources.
Actinomycetales ; chemistry ; Animals ; China ; Chromatography, Liquid ; Indoles ; isolation & purification ; pharmacology ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Porifera ; microbiology ; Seawater ; Secondary Metabolism ; Staphylococcus aureus ; drug effects