1.Monitoring of Medical Staff's Hand Contamination after Change for Infected Wound and Managing Hand Hygiene
Chinese Journal of Nosocomiology 1994;0(04):-
OBJECTIVE To monitor the hand contamination after dressing change for the infected wound and to explore an effective way for hand hygiene. METHODS Caregivers were divided into three groups after applying dressing on infected wound:group 1(no hand-washing),group 2(regular hand-washing),and group 3(standard hand-washing),the pathogens in hands were monitored and the effects of two ways of hand-washing were compared. RESULTS The rate of hand-carrying pathogens after dressing change for the infected wound was 100.0%,the qualified rate of regular hand-washing was only 47.9% and that of standard hand-washing (six-steps method)was 97.9%. CONCLUSIONS The standard hand-washing is more effective than regular hand-washing. Correct hand hygiene should be emphasized to prevent and control nosocomial infection.
2.Prevention of Surgical Incision Infection by Applying AcasinTM Dressing
Chinese Journal of Nosocomiology 1994;0(04):-
OBJECTIVE To detect the effect of AcasinTM dressing on surgical incision healing.METHODS Eighty cases with types Ⅰand Ⅱsurgical incision operation at outpatient clinic were divided into study group and control group.AcasinTM dressing was applied to study group while common aseptic dressing was applied to control group.The bacterial test results and the healing condition of the incision were observed.RESULTS The bacterial tests were negative in study group,the average healing time was 7.32?1.74 days,the healed rate of stage Ⅰ was 100.00%.The bacterial tests were positive in 10 cases of control group,10 cases had redness in incision,5 cases with drainage leakage,the average healing time was 10.12?2.24 days,The healed rate of stage Ⅰ was 90.00%.CONCLUSIONS AcasinTM dressing can eridicate pathogenic organism in surgical incision and suture,It can effectively prevent incision infection,and promote stage Ⅰincision healing.It is worth spread in clinic.
3.Determination of Flavonoids and Quality Evaluation of Sagittate Epimedium(Epimedium sagittatum)
Baolin GUO ; Chunlan WANG ; Peigen XIAO
Chinese Traditional and Herbal Drugs 1994;0(10):-
築y rneans of Rp-HPLC,a quantitative method for the analysis of five ma jor flavonoids in Epimediumsagittatum (Sieb. et Zucc. )Maxim. is developed. The variation of active compounds caused by geographicaland morphological factors are discussed,and a comprehensive evaluation of drug quality of E' sagittatum isgiven.
5.Isolation and structural elucidation of flavonoids from Ancecotochilus roxburghii
Jing GUAN ; Chunlan WANG ; Shunxing GUO
Chinese Traditional and Herbal Drugs 1994;0(10):-
Objective To isolate and identify the chemical constituents in the polar part of the Ancecotochilus roxburghii.Methods The flavonoids were isolated by column chromatography and their structures were elucidated through spectral analyses such as FAB-MS and NMR.Results Five flavonoids were isolated and identified as quercetin 7-O-?-D-glucoside(Ⅰ),quercetin 3-O-?-D-rutinoside(Ⅱ),isorhamnetin-3,4′-O-?-D-diglucoside(Ⅲ),isorhamnetin-3,7-O-?-D-diglucoside(Ⅳ),and isorhamnetin-7-O-?-D-diglucoside(Ⅴ).Conclusion All the compounds are obtained from A.roxburghii for the first time.
6.Impact of Disinfection Quality in Surgical Dressing Room on Wound Healing
Chunlan GUO ; Jun CHEN ; Xingfu MEI
Chinese Journal of Nosocomiology 2009;0(18):-
OBJECTIVE To investigate the impact of disinfection quality in surgical dressing room on the healing of wound with dressing exchanges in order to implement procedures to prevent nosocomial infection. METHODS A retrospective investigation was performed and cases of poor surgical wound healing from Jan 2006 to Dec 2007 were collected and analised. Effective measures were taken to enhance the management and surveillance in the dressing room. RESULTS After taking the prevention procedure,the passing rate of disinfection was increased. Before implementing the prevention procedure the passing rates of air,surface and finger cultured were 83.3%,83.3% and 75.0%,respectively,After taking the prevention procedure the passing rates of above were all 100.0%.The rate of poor wound healing decreased from 4.16% to 1.59%. CONCLUSIONS The disinfection quality of dressing room has direct effects on the wound healing. The management of dressing room disinfection should be emphasized to cut down the nosocomial infections of wound.
7.Study on the protoplast preparation and regeneration of Gliocladium sp. producing antiinflammation compound 6,22-diene-5,8-epidioxy ergosta-3-hydroxy
Jihui ZHANG ; Shunxing GUO ; Chunlan WANG ; Peigen XIAO
Chinese Journal of Biochemical Pharmaceutics 2001;22(2):67-71
Purpose The aim is to study the conditions of preparation and regeneration of Gliocladium sp. (F) protoplast. Methods Different enzyme systems, enzymolysis time, osmotic pressure stabilizers were studied to investigate their influence on the productivity and regenerating rate of Gliocladiumsp. F protoplasts. The HPLC method was used to determine EP (6,22-diene-5,8-epidioxy ergosta-3-hydroxy) content.Results The higher productivity of protoplasts was obtained when mycelia of strain F growing for 60 hours was digested at 28℃ for 4 hours by solution containing 2% cellulase and 2% helicase dissolved in 0.5 mol/L mannitol and the medium containing 0.5mol/L mannitol as osmotic pressure stabilizer would be suitable for protoplast regeneration. According to the EP productivity detected by HPLC, high positive rate of the regenerated strains growing in the medium containing 0.5mol/L mannitol could be got. Conclusion The results will promote the research of strain F mutantgenesis and will be helpful for obtaining the strain more effectively biosythesizing compound EP.
8.Changes of circulating Tfr and Tfh cells in children with myasthenia gravis
Yajie CUI ; Fang CHEN ; Yanjun GUO ; Chunlan SONG
Chinese Journal of Microbiology and Immunology 2016;36(10):746-752
Objective To investigate the changes of follicular regulatory T cells ( Tfr cells) and follicular T helper cells ( Tfh cells) in peripheral blood of children with myasthenia gravis ( MG) . Methods We recruited 28 MG patients and 20 healthy subjects in this study. The percentages of Tfh and Tfr cells in peripheral blood samples were measured by flow cytometry. Real-time PCR was performed to detect the ex-pression of transcription factors and regulatory factors of Bcl-6, c-MAF, Blimp-1 and PD-1 at mRNA level. ELISA was used to detect the levels of IL-2, IL-6, IL-10 and IL-21 in plasma samples and the titers of Ach-Rab and PsMab. Results Compared with the healthy subjects, the MG patients showed higher percentages of Tfh cells and lower percentages of Tfr cells before receiving treatment. The expression of Bcl-6 and c-MAF on CD4+T lymphocytes cells at transcriptional level were significantly enhanced, while the expression of Blimp-1 on CD4+T cells and the expression of PD-1 on Treg cells at transcriptional level were inhibited in the MG patients in comparison with those in healthy subjects. Moreover, decreased levels of IL-2 and increased levels of IL-21 were found in plasma samples collected from the MG patients. Conclusion The decreased percentages of Tfr cells and increased percentages of Tfh cells in patients with MG resulted in abnormal ratios of Tfr/Tfh cells, which might be involved in the immunological pathogenesis of MG. Several changes in the patients with MG might be responsible for the imbalanced ratio of Tfr/Tfh cells, which included changes of IL-2 and IL-21 in microenvironment, enhanced expression of Bcl-6 and c-MAF at mRNA level and inhibited expression of Blimp-1 at mRNA level on CD4+T cells as well as over-expression of PD-1 at mRNA level on Treg cells.
9.STUDIES ON PHARMACOLOGICAL ACTIVITY OF MYCENA DENDROBII
Chunlan WANG ; Xiaomei CHEN ; Shunxing GUO ; Xinmin LIU ; Shaomei SUN ; Shengping WANG ; Weifen SHANG
Microbiology 2001;28(2):73-76
The pharmacological activity of Mycena dendrobii Fan et Guo, a new species of endophytic fungus was studied. It was revealed that the mycelia methanol extracts and the fermentation liquid ethanol extracts of Mycena dendrobii showed anglgesic effect to mice, which have the correlations to that of the traditional Chinese medicine ‘shihu’. The fermentation liquid ethanol extracts of Mycena dendrobii showed excitation effect to central nervous system of mice. Then the effective parts of anglgesic effect was determined.
10.Effects of Qi-Benefiting Blood-Activating Chinese herbs on aorta Rho kinase and related cytokine expression in a rat model of atherosclerosis
Hongzhen ZHANG ; Rui JIAO ; Li LI ; Ying ZHANG ; Yan QIAN ; Chunlan GUO
Chinese Journal of Tissue Engineering Research 2016;20(18):2703-2710
BACKGROUND: Representative formulae of Qi-Benefiting and Blood-Activating Chinese medicinal herbs Bu Yang Huan Wu Tang (BYHWT) can improve microcirculation and hypoxia, decrease fibrinogen, resist platelet aggregation, reduce blood lipid, dilate blood vessel, resist thrombosis, and reduce neonatal plaque rupture, and has a multi-target, multi-channel anti-atherosclerotic effect.
OBJECTIVE: To observe the influence of representative formulae of Qi-Benefiting and Blood-Activating Chinese medicinal herbs BYHWT on aorta Rho kinase, tissue factor, matrix metal oproteinase-2, matrix metal oproteinase-9 mRNA expression in atherosclerosis models, and to explore the action mechanism of BYHWT on anti-atherosclerosis.
METHODS: Vitamin D3 and high fat diet induced atherosclerosis in rats. 60 rats were randomly divided into normal control group, model group, 10 g/kg BYHWT therapy group, 20 g/kg BYHWT therapy group, simvastatin control group and BYHWT prevention group (n=10). At 28 days after model establishment, the expression level of Rho kinase, tissue factor, matrix metal oproteinase-2, matrix metal oproteinase-9 mRNA expression and blood lipid level were detected.
RESULTS AND CONCLUSION: (1) High fat diet and vitamin D3 could induce atherosclerosis in rats. Atherosclerotic plaque formed in the model group. (2) Rho kinase, tissue factor, matrix metal oproteinase-2, matrix metal oproteinase-9 mRNA expression and blood lipid were significantly lower in the normal control group, 20 g/kg BYHWT therapy group, simvastatin control group and BYHWT prevention group than in the model group (P < 0.01). Above indexes were significantly lower in the 10 g/kg BYHWT therapy group than in the model group (P < 0.05). No significant difference in above indexes was detected among BYHWT prevention group, 20 g/kg BYHWT therapy group and simvastatin control group (P > 0.05). (3) Results indicated that Qi-Benefiting and Blood-Activating BYHWT can resist atherosclerosis, down-regulate the expression of Rho kinase, tissue factor, matrix metal oproteinase-2, and matrix metal oproteinase-9 mRNA expression, which may be one of the mechanisms of anti-atherosclerosis.