OBJECTIVE:To establish a method for the determination of 9 residual organic solvents in blonanserin as methanol, alcohol,isopropyl alcohol,acetonitrile,dichloromethane,hexane,ethyl acetate,tetrahydrofuran and methylbenzene. METHODS:Headspace gas chromatography was adopted. The determination was performed on DB-624 capillary column using temperature pro-gramming. The inlet temperature was 150 ℃,and flame ionization detector was used with temperature of 250 ℃. High purity nitro-gen was used as carrier gas with flow rate of 2.8 mL/min. The split ratio was 1:1,and headspace sample size was 1 mL. Head-space heating temperature was 90 ℃,and equilibration time was 35 min. RESULTS:The linear ranges of methanol,alcohol,iso-propyl alcohol,acetonitrile,dichloromethane,hexane,ethyl acetate,tetrahydrofuran and methylbenzene were 6-1500 μg/mL(r=0.9998),10-2500 μg/mL(r=0.9999),10-2500 μg/mL(r=0.9998),0.82-205 μg/mL(r=0.9994),1.2-300 μg/mL(r=0.9995), 0.58-145 μg/mL(r=0.9994),10-2500 μg/mL(r=0.9999),1.44-360 μg/mL(r=0.9996),1.78-445 μg/mL(r=0.9995),respec-tively. The limits of quantitation were 17.71,6.02,3.17,7.45,1.53,0.69,0.93,1.01,0.22 μg/mL;the limits of detection were 5.89,1.90,1.05,2.48,0.51,0.23,0.31,0.33,0.07 μg/mL,respectively. RSDs of precision and stability tests were all lower than 3.0%,and isopropanol was found in repeatability test (RSD=2.1%). The average recoveries ranged 96.67%-102.66%(RSD=1.9%,n=9),96.00%-101.83%(RSD=1.9%,n=9),97.17%-101.50%(RSD=1.4%,n=9),96.97%-102.44%(RSD=2.2%,n=9),95.83%-103.33%(RSD=2.5%,n=9),95.83%-100.28%(RSD=1.9%,n=9),98.17%-101.25%(RSD=1.0%,n=9),96.55%-102.30%(RSD=1.9%,n=9),96.30%-102.22%(RSD=1.8%,n=9),respectively. CONCLUSIONS:The method is simple,rapid,accurate and suitable for simultaneous determination of 9 residual organic solvents in blonanserin as methanol,alco-hol,isopropyl alcohol,acetonitrile,dichloromethane,hexane,ethyl acetate,tetrahydrofuran and methylbenzene.

Animals ; Dementia, Vascular ; metabolism ; physiopathology ; Extracellular Signal-Regulated MAP Kinases ; metabolism ; Hippocampus ; cytology ; metabolism ; physiopathology ; Male ; Mice ; Neurons ; metabolism ; physiology ; Random Allocation

This study is to study is to investigate the coumarins from Fruit of Cnidium monnieri and their cytotoxic activities. The constituents were separated by column chromatography, and their structures were elucidated by spectroscopic data analyses. The isolated compounds were evaluated for their cytoxic activities by MTT method. Eleven compounds were isolated and identified as osthole (1), bergaptan (2), xanthotoxol (3), xanthotoxin (4), imperatorin (5), isopimpinellin (6), osthenol (7), psoralen (8), 5,7-dimethoxycoumarin (9), oxypeucedaninhydrate (10), and swietenocoumarin F (11). Compounds 7, 9-11 were isolated from the Cnidium genus for the first time. Compounds 1,5,10 and 11 showed significant cytotoxic activities against L1210 cell lines at a concentration of 1 x 10(-5) mol x L(-1) with inhibitory rates of were 70.13, 63.10, 55.77, and 75.08% respectively.
Animals ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cnidium ; chemistry ; toxicity ; Coumarins ; chemistry ; isolation & purification ; toxicity ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; toxicity ; Fruit ; chemistry ; toxicity ; Mice ; Molecular Structure

The gene of beta-glucuronidase from Thermotoga maritima was cloned into the plasmid pHsh, and expressed in Escherichia coli JM109. The recombinant protein was purified to homogeneity by a simple step, heat treatment. The recombinant enzyme had a molecular mass of 65.9 kD. The optimal activity of beta-glucuronidase was found at pH 5.0 and 80 degrees C. The purified enzyme was stable over a pH range from 5.8 to 8.2 and had a half life of 2 h at 80 degrees C. The kinetic experiments at 80 degrees C with p-nitrophenyl-beta- glucuronide as substrate gave a K(m) and V(max) of 0.18 mmol/L and 312 u per mg of protein. The purified enzyme could transform glycyrrhizin to glycyrrhetinic acid.
Cloning, Molecular ; Enzyme Stability ; Escherichia coli ; enzymology ; genetics ; Glucuronidase ; biosynthesis ; genetics ; metabolism ; Glycyrrhetinic Acid ; metabolism ; Glycyrrhizic Acid ; metabolism ; Hot Temperature ; Kinetics ; Recombinant Proteins ; biosynthesis ; genetics ; metabolism ; Thermotoga maritima ; enzymology ; genetics

Objective To examine the effect function of platelet(Pt)assemble rate(PLTAR) and the change of protein kinase B(PKB) active by cilostazol (CS)and aspirin (AS)on elderly patients with acute coronary sydrome(ACS). Methods Forty-eight elderly patients with ACS were divided randomly into two groups:CS group (100 mg,n=26),AS group (300 mg,n=22).Twenty-six healthy elderly were into the group of normal control(NC group) . The CS group and AS group were treated by routine anticoagulation and antiplatelet.PLTAR and PKB activity were measured at 10 minutes before treatment and at 7 days after treatment 3.5,6.0,24.0 hours. Results The maximum PLTAR in elderly CS group and AS group was elevated significantly compared with NC group(P

Objective:To investigate the efficacy and safety of continuous blood purification in the treatment of severe acute pancreatitis.Methods:60 cases of severe acute pancreatitis were selected and divided into two groups.The control group (29 cases) was given routine treatment and the observation group (31 cases) was given continuous blood purification.The efficacy of continuous blood purification in the treatment of severe acute pancreatitis was evaluated by CRP,ALT,PaO2/FiO2,HCO3-,Scr,APACHE Ⅱ and MODS scores before and after treatment,complications and survival situation during treatment.Results:Before treatment,there was no statistical significance in the CRP,ALT,PaO2/FiO2,HCO3-,Scr levels between two groups (P＞0.05).After treatment,the CRP,ALT,HCO3-,Scr levels of two groups were decreased.These indexes of observation group were lower than those of the control group (P＜0.05).The PaO2/FiO2 of both groups were increased.The PaO2/FiO2 of observation group was high than that of the control group (P＜0.05).Before treatment,there was no statistical significance in the APACHE Ⅱ and MODS scores between two groups (P＞0.05).After treatment,the APACHE Ⅱ and MODS scores were lower than those before treatment.The APACHE Ⅱ and MODS scores in the observation group were lower than those of the control group (P＜0.05).During treatment,there was no statistical significance in the complications and survival rate between two groups (P＞0.05).Conclusion:Continuous blood purification had a good therapeutic effect on the severe acute pancreatitis.It could improve the organ function,reduce inflammation and regulate the balance of water and electrolyte with high safety.

Ataxia Telangiectasia Mutated Proteins ; Breast ; metabolism ; pathology ; Breast Neoplasms ; metabolism ; pathology ; Carcinoma, Ductal, Breast ; metabolism ; pathology ; Carcinoma, Intraductal, Noninfiltrating ; metabolism ; pathology ; Cell Cycle Proteins ; metabolism ; Checkpoint Kinase 2 ; DNA-Binding Proteins ; metabolism ; Female ; Humans ; Lymphatic Metastasis ; Neoplasm Grading ; Protein-Serine-Threonine Kinases ; metabolism ; Tumor Burden ; Tumor Suppressor Protein p53 ; metabolism ; Tumor Suppressor Proteins ; metabolism

Objective To investigate the diagnosis and treatment of mixed connective tissue disease(MCTD)complicating pulmonary hypertension(PAH) in childhood in order to improve the recognition of this disease.Method According to the symptoms,signs,past history,labratory examinations,the child′s disease was diagnosed and treated,and the relative literature was reviewed.Results The main symptom of the child was interruptable apsychia.Ultrasound showed severe PAH,positive of anti-RNP antibody.After given immunosuppressant and decreased PAH,the patient′s condition was more improved.Conclusions MCTD complicating PAH in childhood onstes delitescently,and it′s difficult to diagnose.Recognition should be elevated to diagnose and treat it earlier.The prognosis can be improved.

Adult ; Aged ; Autoimmune Diseases ; diagnosis ; metabolism ; Female ; Humans ; Insulins ; metabolism ; Male ; Middle Aged

OBJECTIVETo investigate the significance of aquaporin-1(AQP-1) and aquaporin-3(AQP-3) in the development of colorectal carcinoma.

METHODSThe expression of AQP-1 and AQP-3 was investigated using immunohistochemical staining with Streptavidin Peroxidase in tissues from colorectal adenoma (CRA, n=25), colorectal cancer (CRC, n=50), and adjacent mucosa (CRT, n=50).

RESULTSThe positive rate of AQP-1 was 64%(32/50) in CRC, significantly higher than that in CRT (38%, 19/50) and CRA(32%, 8/25)(P<0.05). The expression of AQP-1 was associated with depth of invasion and lymph node metastasis in CRC patients(P<0.05). The positive rate of AQP-3 was 56% in CRT, 44% in CRA, and 52% in CRC. There were no significant differences (P>0.05). The expression of AQP-3 was associated with age, tumor diameter, and depth of invasion (P<0.05). No significant correlation between the expression of AQP-1 and AQP-3 in CRC was shown by Spearman correlation analysis(P>0.05).

CONCLUSIONSAQP-1 expression is increased in CRC while the expression of AQP-3 is not. There is no correlation between the expression of AQP-1 and AQP-3 in CRC.

Adult ; Aged ; Aquaporin 1 ; metabolism ; Aquaporin 3 ; metabolism ; Colorectal Neoplasms ; metabolism ; Female ; Humans ; Male ; Middle Aged