Objective To investigate the correlation between CT perfusion parameters of pulmonary carcinoma and standardized uptake values(SUV)derived from ~(18)F-fluoro-deoxyglucose positron emission tomography(~8F-FDG PET)and tumor microvessel density(MVD),and to determine the validity of CT perfusion in assessing tumor angiagenic activity of pulmonary carcinoma.Methods Fifty patients(mean age 57.5,17 females)with pulmonary carcinoma underwent CT perfusion using 16-slice helical CT.Blood flow(BF,ml?100g~(-1)?min~(-1)),blood volume(BV,ml?100g~(-1)),mean transmit time(MTF,s)and permeability surface area product(PS,ml?100g~(-1)?min~(-1))were analyzed.SUV of PET was calculated in 14 patients.The CD34 immunohistochemical staining was used for tumor microvessel counting.CT perfusion parameters of pulmonary carcinoma were correlatively studied with SUV and tumor MVD.Pearson's correlation analysis was performed to evaluate the association between CT perfusion parameters and SUV and MVD.Results The average values of BF,BV,MTT and PS were 97.30 ml?100g~(-1)?min~(-1), 8.86 ml?100g~(-1),6.75 s and 34.52 ml?100g~(-1)?min~(-1),respectively.The average value of MVD was 61.82/FOV.The mean value of SUV was 5.96.There was positive correlation between BF and SUV(r= 0.727,P

Acute Disease ; Adult ; Animals ; Brucellosis ; transmission ; Cattle ; blood ; Female ; Food Handling ; Humans ; Male ; Middle Aged ; Occupational Diseases ; etiology ; Sheep ; blood

To silence the expression of K-RASAsn12 in human pancreatic cancer cell line by vector-based RNAi(RNA interference) technique,two single-strand DNA sequences encoding mutant-specific shRNA (short haipin RNA) for K-RASAsn12 were synthesized and then inserted into pSilenCircle. The recombinant plasmid was called pSC-K-RASAsn12. According to the same method, pSC-GFP encoding shRNA for GFP was gained. Both recombinant plasmids were transfected into human pacreatic cancer cell line AsPC-1 and BxPC-3. The expression level of K-RASAsn12 was detected by semi-quantitative RT-PCR and Western blot. The result indicated that the recombinant plasmid edcoding mutant-specific shRNA for K-RASAsn12 can inhibit significantly the expression of K-RASAsn12 without affection of wild-type K-RAS(K-RASWT)in Human Pancreatic Cancer Cell Line.

OBJECTIVETo establish a method for GC fingerprint determination of the chemical constituents in Herba Asari.

METHODGC and GC-MS were used to optimize the fingerprint determination method, and identify the main peaks in the GC fingerprint.

RESULTA preferable method for GC fingerprint determination of the chemical constituents in Herba Asari was established.

CONCLUSIONA general acquaintance of the chemical constituents in Herba Asari can be obtained by using the preferable GC fingerprint determination method, which is useful for quality evaluation of the crude drug of Herba Asari.

Anisoles ; analysis ; Asarum ; chemistry ; classification ; Gas Chromatography-Mass Spectrometry ; methods ; Monoterpenes ; analysis ; Plants, Medicinal ; chemistry ; Quality Control ; Safrole ; analysis

Antiviral Agents ; adverse effects ; therapeutic use ; Female ; Hepatitis C, Chronic ; complications ; drug therapy ; psychology ; Humans ; Interferon-alpha ; adverse effects ; therapeutic use ; Mental Disorders ; complications ; Middle Aged

Inorganic/polymer hybrid star polylactic acid (POSS-PLA) was obtained through ring-opening polymerization of lactide by using polyhydroxyl cage silsesquioxane (POSS-OH) as the core and tin (II) octoate as the catalyst. The star polylactic acid (POSS-PLA) was used to modify sodium alginate hydrophobically and a drug carrier was obtained. The drug release behavior was investigated by using ibuprofen as the model drug. The results showed that the drug loading rate could be improved and the release rate was postponed with an increase of POSS-PLA content in the carries. The release mechanism gradually changed from the first-order to the zero-order pattern after the modification.
Alginates ; chemistry ; Biocompatible Materials ; Delayed-Action Preparations ; Drug Carriers ; chemistry ; Drug Compounding ; methods ; Glucuronic Acid ; chemistry ; Hexuronic Acids ; chemistry ; Hydrophobic and Hydrophilic Interactions ; Ibuprofen ; administration & dosage ; Lactic Acid ; chemistry ; Microscopy, Electron, Scanning ; Microspheres ; Nanostructures ; ultrastructure ; Polyesters ; Polymers ; chemistry

OBJECTIVETo study the relationship between polymorphisms of MnSOD and the susceptibility of chronic poisoning exposed to manganism occupationally.

METHODSIn a study of case-control, genotypes were determined by PCR-RFLP in 164 patients with chronic occupational mangamism poisoning and 328 controls with age- and sex-matched for MnSOD 9Ala-Val.

RESULTSThere was a significant difference in the frequency of MnSOD 9Ala-Val at V locus mutant allele between cases and controls (χ(2) = 15.225, P < 0.01, 95%CI = 1.43 ∼ 3.00). Individuals with the genotype VV had a 1.30 of risk increase of occupational chronic manganism poisoning compared with the the genotype AV or AA (OR = 2.30, 95%CI = 1.52 ∼ 3.49, P < 0.05).

CONCLUSIONThe MnSOD polymorphisms may be related with the susceptibility to chronic occupational manganism poisoning, the risk of chronic occupational manganism poisoning increases in carriers with genotype VV at MnSOD 9Ala-Val locus.

Adult ; Case-Control Studies ; Female ; Genetic Predisposition to Disease ; Genotype ; Humans ; Male ; Manganese Poisoning ; genetics ; Middle Aged ; Occupational Diseases ; genetics ; Occupational Exposure ; Polymorphism, Single Nucleotide ; Superoxide Dismutase ; genetics

OBJECTIVETo investigate the protective effect of high density lipoprotein on the cardiac function of rats with severe burns.

METHODSOne hundred and thirty-five Wistar rats were employed in the study and were randomly divided into control (n = 15, without treatment), burn (n = 60, with 30% TBSA full-thickness burn on the back) and experimental (n = 60, with the injection of HDL (80 mg/kg) via the caudal vein immediately after burns) groups. The rats in the groups with burn injury were resuscitated with intraperitoneal isotonic saline (50 ml/kg) 30 minutes after burn (PBM). The serum contents of CK, ICAM-1 and TNF-alpha of the rats of all the three groups were determined with corresponding methods. The histological changes in the cardiac muscle tissue of the rats in all groups were observed under light microscope and electronic microscope.

RESULTSThe serum contents of CK, ICAM-1 and TNF-alpha in the control group were obviously lower than those in burn group (P < 0.01), while those in experimental group were also markedly lower than those in control group (P < 0.05 or 0.01). The average reduction rate was 36.5%, 32.0% and 12.6%, respectively. The size and the structure of the cardiac muscular fiber in the control group were even and normal. Compared with the burn group, degeneration, inflammatory infiltration and mitochondrial swelling were found to be less marked in the experimental group at 48 PBH, and no focal lysis and necrosis were found, which were observed in the burn group.

CONCLUSIONHigh density lipoprotein can be beneficial to the protection of cardiac tissue in protecting from secondary injury in rats with severe burns.

Animals ; Burns ; blood ; physiopathology ; Creatine Kinase ; blood ; Intercellular Adhesion Molecule-1 ; blood ; Lipoproteins, HDL ; blood ; Myocardium ; cytology ; metabolism ; Rats ; Rats, Wistar ; Tumor Necrosis Factor-alpha ; metabolism

OBJECTIVETo study the metabolic chemistry and pharmaco-dynamics characters of ligan from seeds of Arctium lappa.

METHODHPLC method was used in the study. The analysis was carried out on C18 column. The mobile phase was CH3CN-0.05% H3PO4 (36:64) with flow-rate at 0.6 mL x min(-1) and wave-length of 210 nm. The column temperature was kept at 25 degrees C.

RESULTThe results indicated that the ligan was detected in plasma and the main organs 5 min after po. The main metabolic production in plasma was arctigenin. In addition, arctigenin and an unknown product were found in metabolic production in the organs.

CONCLUSIONThe method was stable,simple and reproducible. It can be used to determine the metabolic product of the ligan. The metabolic chemistry of ligan in plasma was obviously different from that in the main organs.

Animals ; Arctium ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Furans ; blood ; metabolism ; Glucosides ; blood ; metabolism ; Lignans ; blood ; isolation & purification ; metabolism ; pharmacokinetics ; Liver ; metabolism ; Male ; Mice ; Plants, Medicinal ; chemistry ; Reproducibility of Results ; Seeds ; chemistry ; Tissue Distribution

OBJECTIVETo investigate the effect of education on self-evaluation and control level in patients with bronchial asthma.

METHODSSeventy-five asthmatic patients with the initial diagnosis in line with the American Thoracic Society criteria, including 46 with junior high school education or below (group A) and 29 with senior high school education or above (group B), were asked to complete a survey to assess their symptoms and asthma attacks. Asthma control test (ACT) and peak expiratory flow rate (PEFR) evaluation were performed 8, 12 and 24 weeks after salmeterol/fluticasone therapy. Step-down treatment was administered according to GINA guidelines. The self-evaluation of the patients was assessed according to ACT score, physical signs and pulmonary function. An ACT score over 19 indicate well controlled condition. The effect of education on the self-evaluation and control level of bronchial asthma was assessed.

RESULTSThe two groups had similar basal level of pulmonary function (FEV1). Eight weeks after the therapy, 29 patients in group A had ACT score over 19, including 11 with high control level; in group B, 17 had ACT score over 19, of whom 4 showed high control level. There was no significant difference between the two groups in control levels and self-evaluation (P>0.05). At 12 weeks, 37 patients in group A had ACT score over 19, with 17 having high control level; 22 patients in group B had ACT score over 19, 4 showing high control level; the two groups were similar in the control levels (P>0.05) but showed significant difference in self-evaluation (P<0.05). At the time of 24 weeks, 42 and 26 patients had ACT score over 19 in the two groups, with 19 and 5 having high control level, respectively. The two groups differed significantly in the control levels (P<0.05) and self-evaluation (P<0.05).

CONCLUSIONThe patients' education level may play a role in self-evaluation and control level of bronchial asthma, but its impact differs in the course of the treatment.

Adolescent ; Adult ; Aged ; Albuterol ; analogs & derivatives ; therapeutic use ; Androstadienes ; therapeutic use ; Anti-Asthmatic Agents ; therapeutic use ; Asthma ; therapy ; Educational Status ; Female ; Fluticasone ; Health Knowledge, Attitudes, Practice ; Humans ; Male ; Middle Aged ; Patient Education as Topic ; methods ; standards ; Salmeterol Xinafoate ; Self Care ; methods ; Young Adult