1.Fluoroquinolone resistance and active drug efflux in Enterococci
Wen WANG ; Yuying ZHANG ; Gang LI ; Mei ZHAO ; Wei JIA
Chinese Journal of Laboratory Medicine 2014;37(4):298-301
Objective To investigate the effect of reserpine,an efflux pumps inhibitor,on the activities of fluoroquinolones (FQNs) against Enterococci,and the distribution of efflux pump genes emeA and its correlation with the resistance of Enterococci.To elucidate the relationship between FQN resistance in Enterococci and active efflux.Methods One hundred isolates of enterococci were identified by VITEK microbe automatic system.The antibacterial agent susceptibility tests were performed by the disc diffusion method (K-B) in accordance with the CLSI standards.The minimum inhibitory concentration (MIC) of each FQN was tested by the agar dilution method,and the MIC changes were detected after adding reserpine.The distribution of emeA in 100 isolates of Enterococci was determined by PCR.Thex2 test was used to compare the differences of statistical results.Results After reserpine was used,three-FQN resistance in Enterococci was reduced.Ciprofloxacin,gatifloxacin and levofloxacin resistance was reduced from 42% (42/100) to 28% (28/100),from 30% (30/100) to 17% (17/100),and from 33% (33/100) to 23% (23/100),respectively.The positive rate of emeA gene in 100 strains of Enterococci was 55% (55/100).There were 45 positive strains(72.6%) in 62 E.faecalis and 10 positive strains (26.4%) in 38 E.faecium.The positive rate of emeA gene in the resistant strains against ciprofloxacin,gatifloxacin and levofloxacin was 73.8% (31/42),76.7% (23/30),75.8% (25/33),respectively,and the positive rate of emeA gene in the susceptible strains against above 3 antibacterials were 41.4% (24/58),45.7% (32/70),44.8% (30/67).Efflux pump genes emeA in resistant strains is higher than the sensitive strains,with the statistically significant difference(x2 =13.02,8.13 and 8.57,P < 0.005).Conclusions Reserpine could inhibit the active efflux of in FON Enterococci and reduce the MIC for drug-resistant strains in vitro.Multidrug-resistant efflux pump gene emeA was relevant to antimicrobial drug resistance in Enterococci.
2.To promote the connotative development of independent institute through the cultivation of “Institute Culture”
Hong ZHANG ; Ai-ming JIA ; Wen-mei HU ; Xin JIN
Chinese Journal of Medical Education Research 2011;10(9):1036-1038
In the cultural construction of independent institute,there exist the contradiction between tradition and innovation,cultural conflicts between private enterprises and the university.Therefore,adhering to the people-centered concept,coordinating tradition and innovation,merging the advantages of university culture and private enterprises culture into a whole,cultivating the unique spiritual culture,harmonious system culture and unified material culture of independent institute,forming the distinctive “Institute Culture” with its own cultural tradition will provide reference for the theory and practice to enrich and improve the connotative development of independent institute.
3.Polymorphism of Nitric Oxide Synthase Gene and Nitric Oxide Production in Serum in Cerebral Infarction
Xin MA ; Jianping JIA ; Xiumin DONG ; Mei WEN
Chinese Journal of Rehabilitation Theory and Practice 2007;13(9):845-847
Objective To observe the polymorphism of nitric oxide synthase(NOS)gene and the changes of nitric oxide(NO)in cerebral infarct.Methods The prospective case-control study was employed.Cases contained 193 subjects with cerebral infarction of internal carotid artery system within 2 weeks.Controls contained 103 subjects which came from the normal health checkup.The polymorphism in intron 4 of endothelial nitric oxide synthase(eNOS)gene were detected.NO content was measured by Griess diazotization assay and NOS activity by enzynatic assay.Results There were 48 subjects with allele a in intron 4 of eNOS gene(eNOS4a)in cases and 12 in controls.The frequencies of eNOS4a in cases was higher than that in controls(χ2=8.86,P=0.003).Multivariate Logistic regression analysis confirmed that eNOS4a was an independent risk factors for cerebral infarction(P=0.032).NO production and NOS activity were 6.04(3.83~11.49)μmol/L,(2.97±1.47)U/ml,respectively in cases,and 6.89(4.64~12.43)μmol/L,(3.16±1.46)U/ml,respectively in controls.NO production in cases were significantly lower than that in controls(P=0.022).There was not differential in NOS activity between these two groups(P=0.517).NO production and NOS activity were 5.07(3.18~7.62)μmol/L,(2.77±1.13)U/ml,respectively in the subjects with eNOS4a,and 6.89(4.64~12.43)μmol/L,(3.12±1.54))U/ml,respectively in the subjects without eNOS4a.NO production in the subjects with eNOS4a were significantly lower than that in the subjects without eNOS4a(P=0.001).The NOS activities were not significantly different in subjects with or without eNOS4a(P=0.100).Conclusion eNOS4a possibly exerted some effects on cerebral infarction by diminishing NO.
4.Clinical research on acupoint catgut implantation in the prevention and treatment of postpartum pain of uterine contraction with qi and blood deficiency.
Li-Ping LI ; Ai-Wen ZHUANG ; Ye-Hua BAO ; Jia-Mei CHU ; Xiao-Qing DOU
Chinese Acupuncture & Moxibustion 2014;34(1):34-36
OBJECTIVETo observe the impacts of the acupoint catgut implantation on postpartum pain of uterine contraction with qi and blood deficiency.
METHODSOne hundred and ten primiparas of natural delivery differentiated as qi and blood deficiency pattern in TCM were selected as the subjects. They were randomized into an acupoint catgut implantation group (55 cases) and a routine nursing group (55 cases). In the acupoint catgut implantation group, the catgut was implanted in Zigong (EX-CA 1), Zusanli (ST 36), Sanyinjiao (SP 6), Pishu (BL 20) and Geshu (BL 17) in 6 h after delivery; additionally, the routine post-delivery nursing was adopted. In the routine nursing group, the routine post-delivery nursing was applied simply. Visual analogue scale (VAS) and the pain relief time of uterine contraction were compared in 24 h, 48 h, 72 h and 96 h after acupoint catgut implantation between the two groups.
RESULTSVAS Scores in 24 h, 48 h, 72 h and 96 h after acupoint catgut implantation in the acupoint catgut implantation group were lower apparently than those in the routine nursing group (3.31 +/- 0.39 vs 4.31 +/- 0.29, 1.86 +/- 0.29 vs 2.66 +/- 0.25, 0.89 +/- 0.21 vs 1.59 +/- 0.24, 0.35 +/- 0.10 vs 0.69 +/- 0.13, all P < 0.05). The pain relief was achieved in (72.06 +/- 6.83) h in the acupoint catgut implantation group and was (123.42 +/- 11.12) h in the routine nursing group. The pain relief in the acupoint catgut implantation group was achieved more quickly (P < 0.01).
CONCLUSIONThe intervention of acupoint catgut implantation in 6 h after natural delivery in primiparas prevents effectively postpartum pain of uterine contraction.
Acupuncture Points ; Acupuncture Therapy ; Adolescent ; Adult ; Catgut ; utilization ; Female ; Humans ; Labor Pain ; therapy ; Pain ; prevention & control ; Postpartum Period ; physiology ; Pregnancy ; Qi ; Uterine Contraction ; Uterus ; physiopathology ; Young Adult
5.Recent progress of potential effects and mechanisms of chlorogenic acid and its intestinal metabolites on central nervous system diseases.
Li-na XING ; Ming-mei ZHOU ; Yun LI ; Xiao-wen SHI ; Wei JIA
China Journal of Chinese Materia Medica 2015;40(6):1044-1047
Chlorogenic acid displays several important roles in the therapeutic properties of many herbs, such as antioxidant activity, antibacterial, antiviral, scavenging free radicals and exciting central nervous system. Only about one-third of chlorogenic acid was absorbed in its prototype, therefore, its gut metabolites play a more important role in the therapeutic properties of chlorogenic acid. It is necessary to consider not only the bioactivities of chlorogenic acid but also its gut metabolites. This review focuses on the potential activities and mechanisms of chlorogenic acid and its gut metabolites on central nervous system diseases.
Animals
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Central Nervous System Diseases
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drug therapy
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metabolism
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Chlorogenic Acid
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administration & dosage
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metabolism
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Humans
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Intestines
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drug effects
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metabolism
6.Angiomyolipoma of the kidney with lymph node involvement.
Chuan-Zhen WU ; Feng-Hua WANG ; Cheng-Mei LI ; Wen-Chang FANG ; Jia-Ni YU
Chinese Journal of Pathology 2005;34(11):715-715
Adrenalectomy
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Adult
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Angiomyolipoma
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pathology
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surgery
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Follow-Up Studies
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Humans
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Kidney
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pathology
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Kidney Neoplasms
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pathology
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surgery
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Lymph Node Excision
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Lymph Nodes
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pathology
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Lymphatic Metastasis
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Male
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Nephrectomy
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Ureter
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surgery
7.Schisandrin B protects against nephrotoxicity induced by cisplatin in HK-2 cells via Nrf2-ARE activation.
Mei LI ; Jing JIN ; Jia LI ; Cui-Wen GUAN ; Wen-Wen WANG ; Yu-Wen QIU ; Zhi-Ying HUANG
Acta Pharmaceutica Sinica 2012;47(11):1434-1439
This study is to investigate the protection effect of schisandrin B (Sch B) against oxidation stress of HK-2 cells induced by cisplatin and the mechanisms involved. HK-2 cells were cultured and divided into different groups: solvent control group, cisplatin exposure group, positive group, Sch B treatment group. Cell viability and toxicity were evaluated by MTT and LDH assay. GSH level and SOD enzymes activities were also measured. DCFH-DA as fluorescence probe was used to detect ROS level by fluorescence microplate reader. Nrf2 translocation was detected by Western blotting. Real time Q-PCR was used to detect expressions of NQO1, HO-1 and GCLC mRNA level. The results showed that Sch B could significantly inhibit the decline of cell viability induced by cisplatin treatment (P < 0.05) and the protective effect was in a dose dependent manner. Furthermore, Sch B treatment significantly inhibited the increase of ROS level induced by cisplatin and reversed the decrease of GSH level (P < 0.05). When Sch B concentration was up to 5 micromol x L(-1), SOD enzyme activities were also enhanced significantly compared with that of the cisplatin group (P < 0.05). It was shown that Sch B could cause nuclear accumulation of Nrf2 in association with downstream activation of Nrf2 mediated oxidative response genes such as GCLC, NQO1 and HO-1. These results suggested Sch B could protect against the oxidative damage of HK-2 cells induced by cisplatin via the activation of Nrf2/ARE signal pathway.
Antineoplastic Agents
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toxicity
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Antioxidants
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isolation & purification
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pharmacology
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Cell Line
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Cell Survival
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drug effects
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Cisplatin
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toxicity
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Cyclooctanes
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isolation & purification
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pharmacology
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Glutamate-Cysteine Ligase
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genetics
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metabolism
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Glutathione
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metabolism
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Heme Oxygenase-1
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genetics
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metabolism
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Humans
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Kidney Tubules, Proximal
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cytology
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metabolism
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L-Lactate Dehydrogenase
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metabolism
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Lignans
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isolation & purification
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pharmacology
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NAD(P)H Dehydrogenase (Quinone)
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genetics
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metabolism
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NF-E2-Related Factor 2
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genetics
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metabolism
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Polycyclic Compounds
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isolation & purification
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pharmacology
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RNA, Messenger
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metabolism
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Reactive Oxygen Species
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metabolism
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Schisandra
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chemistry
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Signal Transduction
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Superoxide Dismutase
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metabolism
8.Research on spectral reflectance characteristics for Glycyrrhizae Radix.
Hui LI ; Cai-Xiang XIE ; Xiao-Jin LI ; Mei-Jia WEN ; Guang-Lin JIA ; Ming-Hui SHI ; Bao-Lin GUO ; Xiao-Guang JIA
China Journal of Chinese Materia Medica 2014;39(3):427-432
In order to study the spectral reflectance differences of Glycyrrhizae Radix under different growth conditions and lay the foundation for quantitative monitoring of Glycyrrhizae Radix remote sensing images, spectra of Glycyrrhiza species under different growth period and different varieties and different regions were measured by a portable spectrometer. The results showed that the reflectivity of annual G. uralensis was obviously higher than that of the two years plant in the visible light band own to the contents of crown layer chlorophyll. The reflectivity of two years G. pallidiflora was higher than that of G. uralensis in the near infrared band own to the leaf area index and the content of leaf water. The red edge spectrum of annual plant fluctuated largely than that of two years plant due to vegetation coverage and leaf area index. G. pallidiflora grew well than G. uralensis. Under different regions of the Glycyrrhiza species, spectral data analysis showed that within a certain range, the average annual precipitation and average annual evaporation were the major factors to affect the differences of Glycyrrhiza species spectral data under different regions owe to the leaf water content, the higher leaf water content, the lower spectral reflectance. The principal component analysis and continuum-removed method of the spectral data under different regions found that, within a certain range, the average annual precipitation and average annual evaporation were the major factors caused by the differences of Glycyrrhiza species spectral data under the different regions, Glycyrrhiza species spectral similarity related to the spatial distance.
Geography
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Glycyrrhiza
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chemistry
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Principal Component Analysis
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Spectrum Analysis
10.Zijin powder in inhibiting H22 mice solid and ascites liver cancer: experimental study.
Da-wen WEI ; Yu-mei JIA ; Zhong-zheng LI
China Journal of Chinese Materia Medica 2005;30(17):1346-1348
OBJECTIVETo observe the rate of Zijin powder in inhibiting H22 mice solid and ascites liver cancer and the relation between quatity and effect.
METHODThe Kunming mics, transplanted by H22 liver cells, were divided into a model group, a cyclophosphamide group and three groups of Zijin powder in high dose, medium dose, and low dose. Then observation was made on the rate of Cancer.
RESULTThe inhibiting rates of Zijin powder of three groups (high dose group, medium dose group and low dose group) for H22 mice solid liver cancer were 30.8%, 38.31% and 48.59% respectivily. The inhibiting rates of three groups of Zijin powder (low dose group, medium dose and high dose group) for H22 mice ascites liver cancer were 6.77%, 15.59% and 14.90 % respectivily.
CONCLUSIONZijin powder has better effect on H22 mice solid liver cancer, and its effect is greatly increasing with the increased dosage.
Animals ; Antineoplastic Agents, Phytogenic ; pharmacology ; therapeutic use ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Liver Neoplasms ; drug therapy ; Male ; Mice ; Phytotherapy ; Powders ; Random Allocation