Air ; analysis ; Chromatography, Gas ; methods ; Ketones ; analysis ; Workplace

Air Pollution ; analysis ; Barium ; analysis ; chemistry ; Solubility ; Spectrophotometry, Atomic ; methods ; Workplace

Aim To investigate the effects of Shaoqiduogan(SQDG)on immunological hepatic fibrosis induced by human albumin in rats as well as its possible mechanisms.Methods The model of immunological hepatic fibrosis induced by human albumin was prepared.The rats were randomly divided into 6 groups,namely normal control group,liver fibrosis model group,SQDG(42.5,85,170 mg·kg~(-1))treated groups and colchicine(0.1 mg·kg~(-1)) treated group.HE staining was used to examine the histopathological change.The activities of transaminase in serum,malondiadehyde(MDA)content,superoxide dismutase(SOD)and glutathione peroxidase(GSH-Px)activities,hydroxyproline(Hyp)content in liver homogenate were assayed byspectrophotometry.The levels of hyaluronic acid(HA)and procollagen Ⅲ (PCⅢ)in serum were determined by radioimmunoassay.In vitro,the collagen production of hepatic stellate cell(HSC)-T6 stimulated with transforming growth factor beta1(TGF-β1)was measured with 3H-Proline uptake.Results SQDG had obvious protective effects on human albumin induced hepatic fibrosis in rats.The results showed that the serum ALT and AST decreased by SQDG treatment,but had no significant difference compared with model group.Pathological examination showed that SQDG could remarkably alleviate the hepatic fibrosis.SQDG not only decreased the Hyp content in liver homogenates,but also the elevated level of HA,PCⅢ in serum.SQDG also ameliorated the oxidative stress state of hepatic fibrosis rats,decreased the production of MDA and enhanced the activities of antioxidative enzyme including SOD and GSH-Px.Furthermore,SQDG(20～160 mg·L~(-1))inhibited the collagen production of HSC stimulated with TGF-β1 in vitro.Conclusion sSQDG has protective effect on liver fibrosis rats induced by human albumin.The mechanisms of its anti-fibrotic effects may be associated with its action of ameliorating the oxidative stress in liver,and inhibiting the production of collagen in HSC.

OBJECTIVEObserve and analyze the informations of western medicine and traditional Chinese medicine in patients with coronary heart disease (CHD), in order to provide reference for clinical treatment.

METHODSelect patients with CHD in diagnosis of the first place in 17 hospitals, drug informations of these patients were analyzed using frequency method and association rules.

RESULTIn 84 697 patients,there were 47 564 males and 32 882 females. The median age was 71 years old, 76 172 patients have medicine records, including 278 kinds of western medicine and 331 kinds of traditional Chinese medicine. Aspirin was the most common used western medicine (51 132 patients, 67.08%), followed by isosorbide dinitrate, clopidogrel etc. The most common used traditional Chinese medicine was danhong injection, followed by shuxuetong injection. After classified the drugs, at the forefront of western medicine were antiplatelet drugs, nitrates drugs, statins, beta blockers, calcium antagonists, ACEI; the most used in traditional Chinese medicine was injection of blood-activating and stasis-resolving, followed by oral preparations of blood-activating and stasis-resolving medicine, Fuzheng class oral medicine, purgation medicine etc. After association rules, combination therapy among western medicine was the most common, combination of western medicine with blood-activating and stasis-resolving was very commonly, especially antiplatelet drugs and nitrates drugs.

CONCLUSIONWestern medicine in the treatment of patients with CHD was in accordance with the guidelines recommend, but with the lower utilization rate. Traditional Chinese medicine has become an important method for the treatment of CHD, promoting blood circulation and removing blood stasis is an important part of traditional Chinese medicine treatment in patients with CHD.

Adrenergic beta-Antagonists ; therapeutic use ; Adult ; Aged ; Aged, 80 and over ; Animals ; Aspirin ; therapeutic use ; Combined Modality Therapy ; Coronary Disease ; drug therapy ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Hydroxymethylglutaryl-CoA Reductase Inhibitors ; therapeutic use ; Male ; Medicine, Chinese Traditional ; methods ; Middle Aged ; Nitrates ; therapeutic use ; Platelet Aggregation Inhibitors ; therapeutic use

Carcinoma, Medullary ; pathology ; Carcinoma, Renal Cell ; diagnosis ; metabolism ; pathology ; radiotherapy ; surgery ; Diagnosis, Differential ; Humans ; Keratins ; metabolism ; Kidney Neoplasms ; diagnosis ; metabolism ; pathology ; radiotherapy ; surgery ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Neoplasms, Squamous Cell ; pathology ; Nephrectomy ; Radiotherapy, Adjuvant

Antigens, CD20 ; metabolism ; Antigens, CD34 ; metabolism ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Cyclophosphamide ; therapeutic use ; Diagnosis, Differential ; Doxorubicin ; therapeutic use ; Humans ; Lymphoma, Large B-Cell, Diffuse ; drug therapy ; metabolism ; pathology ; Male ; Melanoma ; metabolism ; pathology ; Middle Aged ; Prednisone ; therapeutic use ; Vascular Neoplasms ; drug therapy ; metabolism ; pathology ; Vincristine ; therapeutic use

Anion Exchange Protein 1, Erythrocyte ; metabolism ; Breast ; metabolism ; pathology ; surgery ; Cadherins ; metabolism ; Female ; Fibrocystic Breast Disease ; metabolism ; pathology ; surgery ; Follow-Up Studies ; Humans ; Middle Aged ; S100 Proteins ; metabolism

Breast Neoplasms ; diagnosis ; pathology ; Female ; Humans ; Leiomyosarcoma ; diagnosis ; pathology ; Middle Aged ; Skin Neoplasms ; pathology ; secondary

OBJECTIVETo establish a rapid gas chromatographic method for determination of o-chlorostyrene in the air of workplace.

METHODThe air samples were collected by syringes, injected directly to the GC system, and then separated by a FFAP capillary column (30 m × 0.53 mm × 0.25 µm), finally determined by a Flame Ionization Detector.

RESULTSA good linear correlation was showed within a range of 0 ∼ 1200 µg/L, with regression formula Y = 14 030 + 7 207X (r = 0.9999). The air sample could be stably stored in the syringe for 5 hrs. The relative standard deviation (RSD) of repeated injection of o-chlorostyrene standard solutions at three different concentration by six times was 1.28% ∼ 1.97%. The minimum detectable concentration was calculated to be 5.2 mg/m(3). Other coexistent violative organic compounds such as styrene, p-chlorostyrene, and m-chlorostyrene didn't interfere with the determination under the experimental conditions of this method.

CONCLUSIONThis method meets the requirement of "Guide for establishing occupational health standards-Part 4: Determination methods of air chemicals in workplace". It is applicable for determination of o-chlorostyrene in the air of workplace.

Air Pollutants, Occupational ; analysis ; Chromatography, Gas ; methods ; Styrenes ; analysis ; Workplace

Objective To explore whether the change of S phase kinase-associated protein 2 (Skp2) expression could regulate mesangial cell proliferation. Methods Skp2 siRNA and control siRNA, pIRES-GFP-Skp2 plasmid and pIRES-GFP plasmid were designed and synthesized. Cell transfection was performed by Lipofectamine 2000. Skp2 mRNA and protein levels were detected by semiquantitative PCR and Western blotting respectively. Primary culture rat mesangial cells were divided into 6 groups: 0%FCS, 20%FCS, 10%FCS+pIRES-GFP plasmid, 10%FCS+pIRES-GFP-Skp2 plasmid, 20%FCS+control siRNA, 20%FCS+Skp2 siRNA. Cell number was detected by MTT. S phase entry was measured by BrdU labeling. Cell cycle profile was determined by flow cytometric analysis. Results Skp2 mRNA level was significantly down-regulated by Skp2 siRNA compared to control siRNA. Skp2 protein level increased after pIRES-GFP-Skp2plasmid transfection compared to pIRES-GFP plasmid. MTT, BrdU labeling and cell cycle profile demonstrated that cell number (A: 0.419±0.088 vs 0.305±0.036, P＜0.01) and S-phase cells (BrdU labeling positive cell: 0.21±0.04 vs 0.15±0.03, P＜0.01;S-phase cell number:20.18±0.64vs 14.33±0.37, P＜0.01) obviously increased after Skp2 plasmid transfection, while decreased after Skp2 siRNA transfection compared to control groups (A: 0.328±0.069 vs 0.482±0.133, P＜0.01;BrdU labeling positive cell: 0.17±0.01 vs 0.24±0.00, P＜0.01; S-phase cell number: 16.52±0.75vs 23.81 ±1.25, P＜0.01). Conclusion Over-expression of Skp2 stimulates mesangial cell proliferation while down-regulated expression of Skp2 inhibits mesangial cell proliferation.