Acetic Acid ; analysis ; Chromatography, Ion Exchange ; Workplace

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.

Cholestasis, Intrahepatic ; etiology ; Citrullinemia ; complications ; Humans ; Infant ; Male

Aged ; Air Pollutants, Occupational ; Eosinophil Cationic Protein ; blood ; Humans ; Immunoglobulin E ; blood ; Inhalation Exposure ; Male ; Middle Aged ; Silicosis ; blood

Aged ; Case-Control Studies ; Humans ; Male ; Malondialdehyde ; metabolism ; Middle Aged ; Oxidation-Reduction ; Serum ; metabolism ; Silicosis ; blood ; Superoxide Dismutase ; metabolism

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.

Actins ; metabolism ; Bone Neoplasms ; metabolism ; pathology ; surgery ; Desmin ; metabolism ; Diagnosis, Differential ; Fibrosarcoma ; metabolism ; pathology ; Humans ; Leiomyosarcoma ; metabolism ; pathology ; surgery ; Male ; Middle Aged ; Neurilemmoma ; metabolism ; pathology ; Tibia ; Vimentin ; metabolism

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 ; chemistry ; Benzylisoquinolines ; chemistry ; Drug Carriers ; chemistry ; Drug Compounding ; instrumentation ; methods ; Drugs, Chinese Herbal ; chemistry ; Kinetics ; Lactic Acid ; chemistry ; Microspheres ; Particle Size ; Polyglycolic Acid ; chemistry

Elemene is a new anticancer drug isolated from a Chinese traditional medicine Curcuma aromatica. In previous work, we discovered that tumor cell vaccine (TCV) treated with oleum Curcuma aromatica or elemene could induce significant immunoprophylactic effect against a variety of aminal tumor strains and the method of preparation of elemene combo-TCV(EC-TCV) already got China's inventive patent. In this paper we further studied the active immunotherapeutic effect and the possible cellular/molecular mechanisms of EC-TCV immunization. The results were as follows:(1) EC-TCV immunization showed significant therapeutic effects (P＜0.05) against murine Ca761 syngeneic mammary carcinoma (H-2k) and HCa-F allogeneic hepatic carcinoma (H-2-) models; (2) The spleen cells of Hca-F EC-TCV immunized mice displayed higher cytotoxicity and IL-12 level while the secretion of IL-10 was decreased (P＜0.05); (3) Similar to heat shock, elemene(E), mitomycin C(MMC) and glutaraldehyde (G) could act alone as stressor, and induce significant changes of the expression of membrane heat shock proteins(HSP70 or/and HSP90) on L615 leukemia and HCa-F hepatoma cells and the EC-TCVs (E+MMC+G treated in combination) showed the highest level of membrane HSPs expression (P＜0.05 or P＜0.01 );(4) The HSP70-peptide complex isolated from HCa-F EC-TCV through ADP-agarose affinity chromatographic system could induce active immunoprotection against lethal dose challenge of HCa-F hepatic cancer cell but could not protect against the cross challenge of lethal dose of L615 leukemia. The results indicated that the immunoprotective effect of EC-TCV was in some extent tumor-specific, MHC-nonrestricted, and HSPs might play an important role in its molecular mechanisms.

Objective To analyze the magnetic resonance imaging (MRI) features of sacrococcygeal teratoma in children,and explore the diagnostic value of MRI and the critical suggestion for treatment.Methods The MRI features,clinical features,pathological data and operation complication of sacrococcygeal teratoma in 26 children were retrospectively analyzed. Phenotype teratoma in 9 cases grew from apex of coccyx to fundament.They presented spherical or ellipsoidal,distinct boundary and septatus in cystic MRI.All pathological data presented benign tumors.Mixed teratoma in 16 cases growed from fundament to cavitas pelvis.They presented dumbbell,distinct boundary,mixed signal of cystiform and solid density in MRI.There were 12 cases in benign tumors and 4 cases in malignant in pathology,the invisible teratoma in 1 case which lay between rectum and sacrum,extended to cavitas pelvis.Its boundary was not intact and segmented,and the pathological data presented malignant tumors.Results All of the 26 cases were completely excised only once and 21 of them received sacrococcygeal incision,5 cases had abdominosacral combined incision.Twenty-two cases were followed up (benign 20 cases,malignant 2 cases),and 2 cases of them died. 8 cases had complications,of the 8 cases,2 cases with necrosis of flap,1 case with chronic sinus tract and 2 cases with recidivism occurrd.Conclusions MRI may detect discovering the location and appearance of sacrococcygeal teratoma in children in diagnosis and in differential diagnosis of tumor nature.It is a very significant to reconstruct cavities pelvis and eradicase focal dead space in prevention and treatment of post-operation complication in childrens sacrococcygeal teratoma.