0.05);the lung′s rale improvement was significant(diffe-)rent(?~2=4.75 P

The objective of this study was to construct an improved thioredoxin fusion protein expression system, and express the cathelicidin-derived peptide, Lf-CATH2. The improved fusion vector Lf-CATH2-pET32α(-TS) was successfully constructed by firstly deleting the thrombin site and S tag from the pET-32α vector, then inserting the Lf-CATH2 plus a thrombin site instead. Afterwards, Lf-CATH2 was expressed in Escherichia coli as fusion protein. After the cleavage by thrombin, Lf-CATH2 was released and subsequently separated using affinity chromatography. The antimicrobial activity of purified Lf-CATH2 was also examined. The improved expression vector significantly increased enzyme cleavage efficiency by 37%, and Lf-CATH2 could be expressed in high yield and maintain the biological activity. This novel thioredoxin fusion protein expression system enables a quick production of high-yield bioactive cationic peptides like cathelicidins.
Cathelicidins ; biosynthesis ; Chromatography, Affinity ; Escherichia coli ; Genetic Vectors ; Recombinant Fusion Proteins ; biosynthesis ; Thioredoxins ; genetics

OBJECTIVETo study the chemical constituents of the seeds of Cuscuta chinensis.

METHODThe separation was carried out by polyamide and silica gel chromatography, and the compounds were identified by means of physico-chemical and spectroscopic methods.

RESULTSEight compounds were isolated from the plant and identified as quercetin 3-O-beta-D-galactoside-7-O-beta-D-glucoside (I), quercetin 3-O-beta-D-apiofuranosyl-(1-->2)-beta-D-galactoside (II), hyperoside (III), isorhamnetin (IV), kaempferol (V), quercetin (VI), d-sesamin (VII) and 9(R)-hydroxy-d-sesamin (VIII).

CONCLUSIONCompounds IV and VII were isolated from Cuscuta for the first time, and I, II and VIII were characteristic constituents for this vegetable drug.

Cuscuta ; chemistry ; Flavonols ; Plants, Medicinal ; chemistry ; Quercetin ; analogs & derivatives ; chemistry ; isolation & purification ; Seeds ; chemistry

To offer the reference and method for salt damage in the cultivation of Marsdenia tenacissima, the seeds of M. tenacissima collected from Maguan city ( Yunnan province) were taken as the test materials to study the effects of different priming materials on improving germination and growth under high-level salt stress condition. Four different treatments, which were GA3, KNO3-KH2PO4, PEG-6000, NaCl, combined with ANOVA were applied to test the performance of germination energy, germination percentage, germination index, MDA, SOD, and CAT. The results showed that the seed germination was obviously inhibited under salt stress and the soaked seeds with different priming materials could alleviate the damage of salt stress. Under these treatments, the activities of SOD, CAT the content of soluble protein significantly increased. While the content of MDA significantly decreased. The maximum index was obtained when treated with 1.20% KNO3-KH2PO4, the germination percentage increased from 52.67% to 87.33% and the activity of SOD increased from 138.01 to 219.44 respectively. Comparing with the treatment of 1.20% KNO3-KH2PO4, the germination percentage of treating with 300 mg x L(-1) GA3 increased from 52.67% to 80.67%, while the activity of SOD increased from 138.01 to 444.61.
Germination ; drug effects ; physiology ; Marsdenia ; drug effects ; growth & development ; Nitrates ; pharmacology ; Polyethylene Glycols ; pharmacology ; Potassium Compounds ; pharmacology ; Seeds ; drug effects ; growth & development ; Sodium Chloride ; pharmacology ; Stress, Physiological ; Xanthones ; pharmacology

OBJECTIVETo study the effect of fluridone concentration, stimulating period, temperature and salt on the seed germination of three species of Cistanche.

METHODThe seeds were cultured in Petri dish, and the germination percentage was counted.

RESULTThe highest germination percentage was observed in Cistanche tubulosa, C. deserticola, C. sala seeds pre-treated by 0.1 mg x L(-1) fluridone for 24-29 h. The optimal temperature for the seeds germination of three species of Cistanche was at 20-30 degrees C, and the seeds did not germinate at sub-or supraoptimal temperatures (5 and 35 degrees C). The salt tolerance of C. sala seeds was strong, and the critical value of NaCl concentration was 0.04 mol x L(-1). By contrast, C. tubulosa and C. deserticola seeds were more sensitive to the salt stress, the critical value of NaCl concentration was 0.02 mol x L(-1).

CONCLUSIONThe optimal germination condition and the method of testing germination percentage of three species of Cistanche seeds are as follow: the seeds are pre-treated by 0.1 mg x L(-1) fluridone for 24 h and then cultured at 20-30 degrees C in salt solution which concentration is lower than 0.02 mol x L(-1).

Cistanche ; classification ; growth & development ; Germination ; drug effects ; physiology ; Plants, Medicinal ; growth & development ; Pyridones ; pharmacology ; Seeds ; growth & development ; Sodium Chloride ; pharmacology ; Species Specificity ; Temperature

Objective To analyze domestic clinical research literature on health education pathway for stroke patients,in order to fully understand the application of health education pathway in stroke disease.Methods CNKI,VIP,Wanfang and Wanfang dissertation data base were searched from their establishment date to February 29th,2012 and the keywords were "stroke" combined with "health education pathway",or "clinical pathway" and "health education".Methods of bibliometric analysis and content analysis were used to analyze the search results.Results 19 literatures were included,all of which were clinical trials on health education path as intervention measures.Among them,18 were included in 13 periodicals and 1 was dissertation.The objects of health education were patients (12 literatures),patients and caretakers (5 literatures) and caretakers (2 literatures).Only 6 literatures specified the time of health education pathway.3 mentioned Chinese medical health education and the rest were all about western medical health education.6 talked about the mode of health education.all evaluation indexes were quantitative,none were qualitative.only 7 accounted for the formation of health education pathway.Conclusions Health education pathway for stroke patients is getting more and more attention,but highlights no characteristics of traditional Chinese Medicine.The quality of literature requires improvement,timeline as well as hierarchy of health education pathway has to be explicated,and a better evaluation system needs to be built.

OBJECTIVETo study the effect of occupational stress on cardiovascular function of different vocational population.

METHODSThe occupational stressors, risk factors of cardiovascular diseases were investigated by questionnaire in 839 people with 4 kinds of jobs. Blood pressure, sugar, and lipid were detected at the same time.

RESULTSBlood pressure were higher in the groups of old age, long standing and teachers, and the abnormal rate of blood pressure was 21.69%. There was no difference in abnormal ECG among ages, standing and occupation, and the abnormal rate of ECG was 19.07%. Job control, job demands, job responsibility, role in a job and shift work were the main stress factors affecting systolic and diastolic blood pressure. More conflict in job, less chance of participation, severe job loads were the risk factors of primary hypertension. Accident due to job responsibility, job responsibility, role in a job were the main risk factors of abnormal electrocardiograph. Self-respect and activity beyond work were the good modifiers of heart function.

CONCLUSIONOccupational stress has certain effect on cardiovascular function.

Adult ; Blood Pressure ; Electrocardiography ; Female ; Humans ; Logistic Models ; Male ; Occupational Diseases ; physiopathology ; Stress, Psychological ; physiopathology

OBJECTIVETo study the feasibility of monoamine neurotransmitters, serum glucose, serum glycerinate and cholesterol as objective indices for evaluating occupational stress.

METHODSJob stressors, modifiers, job strains in 844 people with four kinds of occupation were investigated, and the concentration of monoamine neurotransmitters, glucose, glycerinate and cholesterol in blood were detected at the same time. The methods of multiple stepwise regression and covariance analysis were used to analyze the data.

RESULTSThere was close relationship between monoamine neurotransmitters and job stressors, the forecast of the equation of 5-hydroxytryptamine (5-HT), dopamine (DA) and norepinephrine (NE) was 0.7238, 0.5703, 0.4438 respectively, the critical values of them were 804.00, 226.00 and 275.00 ng/ml respectively. There was a little contribution of job stressors to the equation of glucose, glycerinate and cholesterol, the critical values were 6.40, 2.51 and 5.92 mmol/L respectively.

CONCLUSIONMonoamine neurotransmitters may be a direct objective evaluating indices. Sugar, glycerinate and cholesterol may be an indirect objective indices.

Adult ; Blood Glucose ; analysis ; Cholesterol ; blood ; Female ; Humans ; Male ; Middle Aged ; Neurotransmitter Agents ; blood ; Occupational Diseases ; metabolism ; Stress, Psychological ; metabolism

OBJECTIVETo summarize the therapeutic experience and analyse the clinical effects of anatomical plate and combined external fixator for the treatment of elderly intertrochanteric hip fractures.

METHODSFrom Oct.2006 to Jun.2009, 42 patients with intertrochanteric hip fractures were treated. Among them, 19 patients were treated with combined external fixator, included 7 males and 12 females, aged from 71 to 103 years old; according to Evans classification there were 3 of type 1, 5 of type II, 6 of type III, 5 of type IV. The other 23 patients were treated with anatomical plate, included 9 males and 14 females, aged from 73 to 97 years old; there were 5 of type I , 4 of type II, 10 of type II, 2 of type IV, 2 of type V. Comparisons and statistical analysis were made on operation time, blood loss during operation, hospitalization time, the time of loaded walking, fracture healing time and therapeutic effect.

RESULTSAll the patients were followed up for 6 to 15 months with an average of 8.6 months. In combined external fixator group, the average operation time was (29.368 +/- 3.253) min, the average blood loss during operation was (30.526 +/- 5.242) ml, the average hospitalization time was (4.368 +/- 1.165) d, the average time of loaded walking was (14.526 +/- 1.867) weeks, the fracture healing time was (14.632 +/- 2.798) weeks; in the anatomical plate group above-mentioned indexes were (58.987 +/- 8.600) min, (256.090 +/- 30.112) ml, (13.783 +/- 1.976) d, (11.391+/- 1.644) weeks, (11.391 +/- 2.327) weeks,respectively; and there were significant differences between two groups (P<0.05). According to Harris score criterion, the scores of combined external fixator group was (86.368 0 +/- 3.640) scores,and the scores of anatomical plate group was (86.435 +/- 4.198) scores; there were no significant differences between two groups (P>0.05).

CONCLUSIONThe effect of combined external fixator and anatomical plate for the elderly intertrochanteric hip fractures are both satisfactory and each has its own merits. Combined external fixator has advantages such as fewer complications and operative injuries than that of anatomical plate and is more suitable for the weaker with elderly intertrochanteric hip fractures.

Aged ; Aged, 80 and over ; Bone Plates ; Female ; Follow-Up Studies ; Fracture Fixation ; adverse effects ; instrumentation ; methods ; Hip Fractures ; physiopathology ; surgery ; Humans ; Male ; Postoperative Complications ; Retrospective Studies ; Treatment Outcome ; Weight-Bearing

Objective To screen the antibacterial activity of Chinese traditional medicines against Yersinia pestis.Methods Six Chinese traditional medicines(Coptis Chinesis etc)were selected and extracted with pure water to make a concentration of 1 mg/L.Yersinia pestis strain 201 and EV 76 were used to determine the minimal inhibitory concentrations(MIC)of these selected medicines in vitro with liquid dilution method.Results Three herbs had inhibition effects on the strain 201 and EV76 in different extents,among which Rheum palmatum had the strongest effect and MIC was 0.025 00 mg/L.Furthermore,the Chinese traditional medicine had the same MIC on both strain 201 and EV76.Conclusions Chinese traditional medicines commonly used have inhibiting effect on Yersinia pesti.