3.Significance of detection of serum oxidant function in patients with silicosis.
Guo-Cai LÜ ; Jin-Mei YAO ; Juan-Wen ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2010;28(1):52-53
Aged
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Case-Control Studies
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Humans
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Male
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Malondialdehyde
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metabolism
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Middle Aged
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Oxidation-Reduction
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Serum
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metabolism
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Silicosis
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blood
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Superoxide Dismutase
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metabolism
5.Metabolites from the endophytic fungus Penicillium sp. FJ-1 of Ceriops tagal.
Pengfei JIN ; Wenjian ZUO ; Zhikai GUO ; Wenli MEI ; Haofu DAI
Acta Pharmaceutica Sinica 2013;48(11):1688-91
To investigate the chemical constituents of the endophytic fungus Penicillium sp. FJ-1 of Ceriops tagal, the chemical constituents were isolated by column chromatography on silica gel and Sephadex LH-20. Their structures were elucidated on the basis of spectroscopic analysis. Their antibacterial activity was tested by paper disco diffusion method. Two compounds were isolated and identified as 7-hydroxy-deoxytalaroflavone (1), and deoxytalaroflavone (2). Compound 1 is a new compound, and compounds 1 and 2 showed weak activity against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus.
6.Study on the Biochemical Mechanism of Degrading Keratins by Streptomyces fradiae
Lin HUANG ; Zhi-Qiang XIONG ; Hua-Jing CAI ; Mei-Jin GUO ; Guo-Quan TU ;
Microbiology 1992;0(04):-
The biochemical mechanism of degrading keratins by S.fradiae var S-221 was primarily studied.The compounds (Na_ 2 SO_ 4 , Na_ 2 SO_ 3 and sulfdryl acohol), which respecitively enhance specific activity of keratinase, activate keratinase intensively and mainly act on the disulfide bonds reductase in the keratinase, Na_ 2 SO_ 3 activates intensively both disulfide bonds reductase and polypeptide hydrolytase at 0.01 mol/L, whereas Na_ 2 S_ 2 O_ 3 , which acts on the disulfide bonds reductase, inhibits keratinase.On the condition that substrate, keratins exists, S.fradiae var S-221 is induced to produce exo-keratinase, which is a multiproteinase, containing disulfide bonds reductase, which is a key enzyme degrading keratins, then, with polypeptidic, hydrolytase, graduately hydrolyzates denatured keratins into polypeptides, oligopeptides and free amino acids, so that keratins have been decomposed completely.Sulfur in the keratins was transferred into sulfhydryl compounds, H_ 2 S and sulfates in the course of keratinolysine.
8.Studies on preparation by SPG membrane emulsification method and in vitro characterization of tetradrine-tashionone II(A)-PLGA composite microspheres.
Jin LU ; Meng ZHANG ; Hua-xu ZHU ; Li-wei GUO ; Lin-mei PAN ; Ting-ming FU
China Journal of Chinese Materia Medica 2015;40(6):1091-1096
Tetradrine-tashionone II(A)-PLGA composite microspheres were prepared by the SPG membrane emulsification method, and the characterization of tetradrine-tashionone II(A) -PLGA composite microspheres were studied in this experiment. The results of IR, DSC and XRD showed that teradrine and tashionone II(A) in composite microspheres were highly dispersed in the PLGA with amorphous form. The results of tetradrine-tashionone II(A) -PLGA composite microspheres in vitro release experiment showed that the cumulative release amounts of tetradrine and tashionone II(A) were 6.44% and 3.60% in 24 h, and the cumulative release amounts of tetradrine and tashionone II(A) were 89.02% and 21.24% in 17 d. The process of drug in vitro release accorded with the model of Riger-Peppas. Tetradrine-tashionone II(A) -PLGA composite microspheres had slow-release effect, and it could significantly reduce the burst release, prolong the therapeutic time, decrease the dosage of drugs and provide a new idea and method to prepare traditional Chinese medicine compound.
Benzofurans
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chemistry
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Benzylisoquinolines
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chemistry
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Drug Carriers
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chemistry
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Drug Compounding
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instrumentation
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methods
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Drugs, Chinese Herbal
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chemistry
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Kinetics
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Lactic Acid
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chemistry
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Microspheres
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Particle Size
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Polyglycolic Acid
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chemistry
9.Primary leiomyosarcoma upper end of tibia: report of a case.
Jin-song LIU ; Mei LI ; Guo-rui XU ; Hong ZHU ; Dian-wei LI
Chinese Journal of Pathology 2009;38(8):555-556
Actins
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metabolism
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Bone Neoplasms
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metabolism
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pathology
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surgery
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Desmin
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metabolism
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Diagnosis, Differential
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Fibrosarcoma
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metabolism
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pathology
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Humans
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Leiomyosarcoma
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metabolism
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pathology
;
surgery
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Male
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Middle Aged
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Neurilemmoma
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metabolism
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pathology
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Tibia
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Vimentin
;
metabolism
10.Clinical effect of vitrectomy with intravitreal ranibizumab for diabetic retinopathy
Yun-Peng, WANG ; Mei-Zhu, CHEN ; Guo-Cang, CHEN ; Yan-Jin, CHEN
International Eye Science 2014;(7):1257-1259
AlM: To observe clinical effect of vitrectomy with intravitreal ranibizumab for the treatment of diabetic retinopathy ( DR) .
METHODS:From February 2011 to February 2013, there were 90 cases in our hospital diabetic retinopathy patients withvitrectomy surgery. lt was randomly divided into observation group ( 45 cases ) and control group ( 45 cases ) . Two groups of patients were performed vitrectomy. Patients in observation group were injected intravitreal ranibizumab before surgery, then vitrectomy was underwent for diabetic retinopathy. Vitrectomy was only underwent in control group.
RESULTS:The patients in observation group with good effect accounting for 71% (32/45) and good rate was 89%(40/45 ), which were significantly higher than that in control group 51% ( 23/45 ) , 71% ( 32/45 ) . Differences were statistically significant ( P < 0. 05 ). Amount of bleeding was 9. 64 ± 2. 27mL, intraocular pressure was 13. 64 ± 3. 27mmHg. lt was significantly less than that in control group 10. 21 ± 3. 14mL, 16. 00 ± 3. 14mmHg. Differences were statistically significant (P<0. 05).
CONCLUSlON: The vitrectomy with intravitreal ranibizumab treatment of diabetic retinopathy can not only reduce blood loss, but also reduce edema and improve effectiveness and safety. lt's worth recommending for clinical practice.