Seven indole alkaloid glycosides containing a 1'-(4″-hydroxy-3″,5″-dimethoxyphenyl)ethyl unit (-) were isolated from an aqueous extract of leaves (da qing ye). Their structures were determined by spectroscopic data analysis combined with enzymatic hydrolysis as well as comparison of their experimental CD (circular dichroism) and calculated ECD (electrostatic circular dichroism) spectra. Based on analysis of and/or Cotton effect (CE) data of -, two simple roles to assign location and/or configuration of -glycopyranosyloxy and 1'-(phenyl)ethyl units in the indole alkaloid glycosides are proposed. Stereoselectivity in plausible biosynthetic pathways of - is discussed. Compounds and and their mixture in a 3:2 ratio showed activity against KCNQ2 in CHO cells. The mixture of and (3:2) exhibited antiviral activity against influenza virus H1N1 PR8 with IC 64.7 μmol/L (ribavirin, IC 54.3 μmol/L), however, the individual or was inactive. Preliminary structure-activity relationships were observed.

Objective:To investigate the characteristics and influencing factors of bacterial infection around dental implants(BIADI).Methods:From December 2018 to December 2019, 300 patients with oral implanting in the First People's Hospital of Wenling were selected as the observation objects, among them 43 patients had bacterial infection around the implants, with the incidence rate of 14.33%.The control group (257 cases) had no infection and the observation group with infection.The samples of gingival crevicular floor of patients with BIADI were collected and the pathogens were isolated and identified by the bioassay instrument of French merrier biological company.Single factor analysis was used to analyze the related factors of BIADI, and multi-factor analysis was used to analyze the independent risk factors of BIADI.Results:In 43 patients with BIADI, 46 strains of pathogenic bacteria were isolated, which were mainly anaerobes 30 strains(65.22%), and 11 strains were aerobes (23.91%). Single factor analysis showed that there were no significant differences between the two groups in gender, education level, history of chronic periodontitis, oral health habits and residence (all P>0.05). There were statistically significant differences between the two groups in age, combined with basic diseases, smoking history and alveolar bone around implants (all P<0.05). The results showed that age>60 years old, combined with basic diseases, smoking history and alveolar bone defects were independent risk factors for bacterial infection. Conclusion:The main pathogens of BIADI are anaerobes, and the infection is affected by many factors, including age, basic diseases, smoking history and alveolar bone defects around dental implants.

The mental health status of 237 patients with coronary heart disease who participated in cardiac rehabilitation (CR) after coronary artery bypass grafting and 148 non-participating patients(control group) in three hospitals was evaluated,and the related factors for mental health of patients with CR were analyzed.The results showed that the anxiety,depression,and quality of life scores of patients after 2 months of participation in CR were significantly lower than those before CR (P＜0.05),and the incidence of anxiety and depressive symptoms was significantly lower than that in control group (18.5％ vs.31.1％ and 14.8 vs.25.0％,respectively,P＜0.05).The risk of anxiety and depressive symptoms was higher in CR participants with lower monthly income [OR=0.335(0.150-0.751),P=0.008],unemployment [OR=0.427(0.244-0.749),P=0.003] and knowing their own disease [OR=3.243(1.427-7.371),P=0.005].This study shows that CR can effectively improve the state of depression and anxiety and improve the quality of life.The implementation of CR shoμld fully consider a variety of influencing factors and develop a targeted rehabilitation program.

OBJECTIVE： To provide a theoretical basis for the development of the following products of Coptis chinensis- Zingiber ojjicinale couplet medicine （“Coptis chinensis-Zingiber ojjicinale” for short） prescription. METHODS： The prescriptions containing Coptis chinensis-Zingiber ojjicinale were collected from the Dictionary of TCM Prescription and input into TCM inheritance support platform software （V2.5） to establish the database. The frequency of major diseases and compatibility medicinal materials were analyzed statistically. The core combination of medicinal materials in the prescriptions containing Coptis chinensis-Zingiber ojjicinale were analyzed statistically with association rule Apriori algorithm （support degrees were 15％， 20％， 25％， confidence was 0.90）. Top 2 main diseases in the list of frequency， compatibility medicinal materials for dispelling internal cold and medicine for clearing heat with highest compatibility frequency were selected and analyzed in respect of prescription rules. RESULTS： A total of 492 prescriptions containing Coptis chinensis-Zingiber ojjicinale were screened， 9 kinds of major diseases （frequency≥15）， such as dysentery， diarrhea， accumulation， fullness. There were 21 commonly used compatibility medicinal materials （frequency≥55）， including Angelica sinensis-Panax ginseng， Magnolia officinalis， Aconitum carmichaelii， Scutellaria baicalensis， etc. There were 19 commonly used medicinal materials combinations， including Coptis chinensis-Zingiber ojjicinale-Panax ginseng， Coptis chinensis-Zingiber ojjicinale- Magnolia officinalis， Coptis chinensis-Zingiber ojjicinale-Angelica sinensis. There are 5 kinds of core medicinal materials commonly used in treating dysentery with Coptis chinensis-Zingiber ojjicinale，and 9 kinds of core medicinal materials for treating dysentery. There are 8 kinds of core medicinal materials in Coptis chinensis-Zingiber ojjicinale compatible with medicine for dispelling internal cold Aconitum carmichaelii prescription.and 7 core medicinal materials in compatible with medicine for clearing heat Scutellaria baicalensis prescription. CONCLUSIONS： The major diseases treated with prescriptions containing Coptis chinensis-Zingiber ojjicinale are mainly digestive tract diseases. It can treat different diseases being compatible with different medicinal materials， this study aslo can provide theoretical basis for the development of subsequent products.

Objective:To obtain the prokaryotic expression product for the group 6 allergen of Dermatophagoides farine ( Der f 6) and detect its IgE-binding rates with sera from asthmatic children. Methods: By enzyme digestion of pET28a (+)-Der f 6 with BamHⅠ plus XhoⅠ,the target gene Der f 6 was obtained and linked into the vector pET32a (+) to construct the recombinant plasmid pET32a(+)-Der f 6, which was then transfected into E. coli BL21 cells for expression, induced with isopropyl-β-D-thiogalactoside ( IPTG) ,purified by affinity chromatography and identified by SDS-PAGE,Western blot and AMLDI-TOF,and tested by ELISA for IgE reactivity with sera from asthmatic children. Results:The plasmids pET32a(+)-Der f 6 were constructed,transformed into E. coli BL21 and expressed successfully. SDS-PAGE of the purification product showed a specific band,Western blot showed the successful binding between the purification product and the His-tag in the plasmids,and MALDI-TOF/TOF identified the identical structure to the allergen Der f 6. Using the ELISA method developed with the recombinant proteins as coating antigen,the positive rate was 41. 3% (19/46) in asthmatic children allergic to dust mite. Conclusion: The plasmids pET32a (+)-Der f 6 were constructed successfully,expressed in E. coli BL 21 (DE3). The recombinant fusion protein has a good reactivity with sera from asthmatic children.

Agriculture ; history ; China ; History, 20th Century ; Microbiology ; history ; Nitrogen Fixation ; Secondary Metabolism

Chronic hepatitis B (CHB) is a major infectious disease which threatens people’s health around the world. Health-related quality of life (HRQoL) has become an important index for evaluating the treatment and prognosis of patients with CHB. Many studies abroad have shown that the HRQoL of patients with CHB is influenced by various factors. Disease severity, clinical symptoms, and low self-efficacy are important influencing factors for patients’ quality of life. Anti-viral therapy, proper physical therapy, or psychological intervention can significantly improve the HRQoL of community CHB patients, and HRQoL is even significantly improved in patients undergoing liver transplantation one year ago. These studies provide valid evidence for antiviral therapy for hepatitis B patients and liver transplantation techniques from the psychological level. At present, there still lacks studies on HRQoL of CHB patients in China. This article summarizes the measurement tools for HRQoL widely used in recent years in China and foreign countries, reviews the research advances in HRQoL in community patients with CHB, and discusses the perspectives for future studies.

Objective:To investigate the effect of the extract of Schisandra chinensis on the matrix metalloproteinases(MMPs) system in kidney tissue of the diabetic rats,and to explore its protective effect on the kidney tissue from the matrix degradation perspective.Methods:STZ was used to establish rat models of diabetes mellitus.A total of 45 diabetic rats were randomly divided into model group,extract of Schisandra chinensis group and Benazepril group,and there were 15 rats in each group.Another 15 rats were selected and used as normal control group.12 weeks after administration,the routine blood and urine biochemical indexes,the histological changes,blood glucose (BG),blood urea nitrogen(BUN),serum creatinine(Scr),high density lipoprotein cholesterol(HDL-C),low density lipoprotein cholesterin(LDL-C),total cholesterol(T-CHO),and triglyceride(TG) levels,excretion rates of albuminuria and proteinuria of the rats in various groups were detected;the expression amounts of fibronectin (FN),type Ⅳ collagen (Col Ⅳ),and matrix metalloproteinase inhibitor metalloproteinase-2 (TIMP-2) in kidney tissue of the rats were detected by immunohistochemical method;the activity of matrix metalloproteinase-2 (MMP-2) was detected by zymography.Results:Compared with model group,the glomeruli matrix accumulation of the rats in extract of Schisandra chinensis group was significantly improved,the excretion rate of albuminuria,LDL-C level and serum MDA level were decreased(P<0.05),the activities of CAT(P<0.01)and SOD(P<0.05)in kidney tissue were increased,and the level of MDA in kidney tissue was decreased(P<0.05).The immunohistochemistry results showed that compared with model group,the expression amounts of FN,Col Ⅳ,and TIMP-2 in kidney tissue of the rats in extract of Schisandra chinensis group were significantly decreased.The zymography results showed that compared with model group,the activity of MMP-2 in kidney tissue of the rats in extract of Schisandra chinensis group was significantly increased(P<0.05).Conclusion:Extract of Schisandra chinensis has protective effect on the kidney tissue of the diabetic rats induced by STZ,and the mechanism may be related to the inhibition of oxidative stress and the improvement of MMP-2 activity as well as the inhibition of TIMP-2 expression which could improve the matrix degradation.

Objective To evaluate the efficacy and safety of ureteral stenting after transurethral resection ( TUR) of bladder tumors involving the ureteral orifice.Methods From March 2009 to November 2015,34 cases of non-muscle invasive bladder tumor including 28 male and 6 female aged from 26 to 79 years( mean 51 years) were treated by TUR.14 cases had single tumor and 20 had multiple tumors,and 29 were primary and 5 were recurrent.All the patients had tumors involving the ureteral orifice without preoperative hydronephrosis revealed by IVU or CTU examination.The tumors were resected into the deep muscle layer and the involved ureteral orifices were resected during the procedure,and after that a double-J ureteral stent was placed in 18 cases.All patients received one immediate intravesical instillation of 50mg epirubicin after TUR, and further scheme of adjuvant intravesical chemotherapy instillations were made according to the pathological diagnosis.Ureteral stents were removed 10-12 weeks after TUR,and cystoscopy and urinary tract ultrasound examinations were performed every 3 months for 1-2 years postoperatively. Results The operations were successful without complications.No serious adverse reaction occurred in immediate and further adjuvant intravesical chemotherapy.During the follow-up period of 3-71 months, no ureteral stricture, hydronephrosis or tumor recurrence in the upper urinary tract occurred in all the 18 patients with ureteral stent, and the resected ureteral orifices recovered well with normal appearance and ejecting urine.Hydronephrosis was observed in 3 of 16 patients without ureteral stent including 2 cases of nontumoral stenosis at the ureterovesical junction requiring ureteral reimplantation and 1 case of lower ureteral tumor on the involved side requiring nephroureterectomy and bladder cuff excision.No patient complained of symptoms secondary to vesicoureteral reflux or continuous unrelievable lower urinary tract symptoms.2 cases of bladder tumor recurred out of the resected area.Conclusions Ureteral stenting after TUR of bladder tumors involving the ureteral orifice can prevent stricture at the ureterovesical junction without increasing the risk of tumor cell seeding along the upper urinary tract.The existence of a double-J ureteral stent does not increase complications of adjuvant intravesical chemotherapy, and also won't cause intolerable lower urinary tract symptoms.