Objective To study the non-covalent binding between the tectoridin(TE) and plasma proteins.Methods The molecular weights of TE,human serum albumin(HSA),?1-acid glycoprotein(AAG) and the protein-drug complexes were measured by the electrospray ion trap mass spectrometry(ESI-MS).The maximum stoichiometric ratios were obtained according to the molecular weight change of the complexes before and after binding reaction.The binding constants(K) of the complexes were calculated by the Scatchard equation.The main sorts of binding force of the complexes were deduced according to the relationship between the reaction temperature and the thermodynamic parameters(?H and ?S).Results The K of the complexes were 1.914?104 mol/L for TE-HSA and 5.893?104 mol/L for TE-AAG,and the number of binding sites were 7.8 and 3.3,respectively.The main sorts of binding force between TE-HSA or TE-AAG were static-electricity gravitation.Conclusion ESI-MS is a good method for studying of the TE-protein non-covalent binding with some advantages in sensitivity,high-speed,and accuracy.

Objective The purpose of this study is to help long term in-patients with senile pruritus choose the appropriate die and further relieve pruritus and improve the quality of life. Methods Totally 37 cases of elderly people with senile pruritus were selected as the observation group who were in community health service center from June 2015 to February 2016. The control group was selected from a welfare hospital. Both of the two groups were evaluated by the degree and the area of pruritus. The control group followed the original diet. The observation group was given enough fruits and vegetables. After six months intervention, the evaluation of the degree and area of pruritus, the rate of skin infections etc were constructed. Results After 6-month intervention, the cases of severe pruritus, skin infection, mini nutritional assessment no less than 24, the constipation, and patients without depression by the Depression Rating Scale in the observation group were 10.81%(4/37), 5.41%(2/37), 64.86%(24/37), 13.51%(5/37), 89.19%(33/37). The cases of the control group were 67.57%(25/37), 43.24%(16/37), 24.32%(9/37), 91.89%(34/37), 43.24%(16/37). According to the two groups, the differences were statistically significant (χ2=12.31-45.59;P<0.05 or 0.01) . The percentage of skin itching area in the observation group was 13.00%(0, 32.25%), the differences were statistically significant from that in the control group, 32.00%(22.00%, 50.50%) (Z=29.53, P<0.01). Conclusions Ensuring enough intake of fruits and vegetables can reduce the morbidity of senile pruritus in long-term in-patients and further improve the quality of life.

Objective To elucidate the ESI-MS performance of lipophilic tanshinones and to establish a fingerprint of lipophilic tanshinones of Radix Salviae Miltiorrhiza.Methods The lipophilic tanshinones were extracted by ultrasonic wave with 95% ethanol from Radix Salviae Miltiorrhiza and the extracts were analyzed directly in positive ion mode by electrospray ion trap mass spectrometry(ESI-MS).Results The lipophilic tanshinones were easily to form molecular ions ~+ and dimeric sodium adduct ions ~+ in positive ion mode,molecular ions of lipophilic tanshinones were fragmentated through lossing H_2O,CO and A-ring cleavages in ESI-MS~2.The ESI-MS fingerprints of lipophilic tanshinone extracts with 14 selected characteristic peaks analyzed with SPSS software were characteristic and stable.Conclusion Lipophilic tanshinones have similar ESI-MS performance;the ESI-MS fingerprint is a useful tool for a rapid and special identification of lipophilic tanshinones in selected traditional Chinese medicine.

To study the influence of the compatibility of ophiopogonis tuber and Chinese magnoliavine fruit with gastrodia rhizome on the pharmacokinetics of gastrodin in rat, three dosages of compound Tianma granule extract (equivalent to gastrodin 50, 100, 200 mg x kg(-1)) and one dosage of Tianma extract (equivalent to gastrodin 100 mg x kg(-1) were administered to rats by intragastric administration separately. Plasma samples were collected at different times and treated with methanol and acetonitrile to precipitate protein. The contents of gastrodin in plasma were determined by HPLC method. The mean plasma concentration-time curves of different medication administration teams were processed with WinNonlin 5.2.1 pharmacokinetic software. The pharmacokinetic parameters of different medication administration teams were analyzed with SPSS statistics 17.0 software. The results indicated that the in vivo kinetic process of gastrodin was fitted to first-order absorption un-compartment model at low, middle dosages and zero-order absorption un-compartment model at high dosage of compound Tianma granule extract. By comparison with the pharmacokinetic parameters of gastrodin (100 mg x kg(-1)) in Tianma extract, the significant decrease for Cmax and significant increase for MRT0-infinity in compound Tianma granule extract indicated that the compatibility of ophiopogonis tuber and Chinese magnoliavine fruit with Gastrodia rhizome can delay the absorption, reduce the elimination rate and prolong the action time of gastrodin in vivo.

Objective To investigate the effects of pravastatin on the blood biochemical index,the levels of serum resistin,tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in patients with impaired glucose tolerance (IGT) and metabolic syndrome (MS).Methods 60 patients with IGT and MS were random treated with pravastatin or remedial life-style intervention,and the levels of lipids profiles,insulin resistance index (HOMA-IR),serum resistin,TNF-α and IL-6 were measured before and after treatment.Results The levels of total cholesterol [ (4.45 ±0.60)mmol/L vs (5.58 ±0.96) mmol/L,t =-5.42,P ＜0.01],HOMA-IR [3.22 ±0.64 vs 3.58 ±0.71,t =-2.05,P ＜0.05) ],resistin[ (1.97 ±0.72) μg/L vs (2.76 ±0.73) μg/L,t=-4.26,P ＜0.01 ],TNF-α[ (9.36 ±2.03) μg/L vs (13.87 ±2.30)μg/L,t =-8.06,P ＜0.01] and IL-6[ (3.50 ±0.99) μg/L vs (6.32 ±1.17) μg/L,t =-10.06,P ＜0.01 ] in pravastatin group were significantly lower than those in life-style intervention group.Conclusion Pravastatin could improve insulin sensitivity of the patients with IGT and MS,significantly decreased the serum levels of resistin,TNF-α,IL-6,and it had anti-inflammatory effect.

Objective To discuss the clinical efficacy of Mepilex surgical dressing in prevention of pressure sore. Methods 46 patients with high risk factors and Norton grading lower than 10 point were divided into the experimental group and the control group with 23 patients in each group. The control group was given reduction of local pressure, protection of the skin, nutritional support and other conventional measures to prevent pressure sore. Besides conventional nursing measures, the experimental group was given Mepilex to cover the bone eminence place, replaced every 7～10 days. The occurrence and development of the pressure sore was observed on the second, fourth, sixth and eighth week after admission. Results The occurrence rate of the experimental group on the sixth week was 4.55%, and the control group was 26.09%,the difference had statistical significance. The cure rate of the two groups showed no difference on the eighth week. Conclusions Application of Mepilex to treat patients with high risk of pressure sore has good effect.

Sixty patients with early diabetic nephropathy (DN) and normal blood pressure were randomly divided into telmisartan treatment and control groups.And the blood biochemical parameters,urinary albumin excretion rate (UAER),the serum levels of homocysteine (HCY) and transforming growth factor-β1 (TGF-β1) were measured at both pre- and post-treatment of 24 weeks.After treatment,the levels ofUAER,HCY [(61 ±26) vs.(98±38) mg/L,(11.70 ±2.86) vs.(14.4±2.8) μmol/L (P＜ 0.01 ) ]and homeostasis model of insulin resistance index,TGF-β1 [ ( 3.17 ± 0.66) vs.( 3.60 ± 0.87 ),(66 ± 14) vs.(77 ± 17 )U/L respectively (P ＜ 0.05 )]in the telmisartan group were significantly lower than those in the control group.It indicated that telmisartan could improve the insulin sensitivity,significantly decrease the serum levels of HCY and TGF-β1,reduce UAER and exert kidney protection effects in the patients with early DN.

ObjectiveTo established a cell line that expresses hBD1 stably,and detected the antimicrobial activity of the hBD1 to the muhidrug resistant bacterial strains.MethodsRecombinant plasmid was introduced into COS-7 cells by lipofectamine,cells were selected in culture medium containing G418 to acquired the monoclonal cell lines,total RNA were extracted from the cultured cells,expression levels of hBD1 mRNA was identified by RT-PCR,collected the supernatant solution of the cultured cell,expression levels of protein was identified by Western blot.Put the expression products and resistant organisms mixed together,after incubation in different times in 37℃,coating the mixtures in LB flat,then obtained the ratios between colonies number of experimental groups and colonies number of control groups,put those ratios as the survival rate of the drug resistance bacterias.Results The monoclonal cell lines had obtained after screened with G418,the hBD1 gene could be detected both at transcriptional and protein levels,Under the influence of expression product hBD1,survival rate of muhidrug-resistant Acinetobacter baumannii,multidrug-resistant Escherichia coli and multidrug-resistant Klebsiella pneumoniae could reduced to 9%,22% and 50%,but survival rate of multidrug-resistant Stenotrophomonas maltophilia is not have apparente difference with the control group.ConclusionThe stably-transfected cell line of hBD1 was successfully constructed,and the expression products of hBD1 showed the antimicrobial activity toward multidrug resistant bacterial strains.

Objective To evaluate the clinical performance of CLINITEK Atlas urine dry chemistry analyzer and its supplementary strips,which could be used for other hospitals as reference.Methods Five hundred and one samples of random fresh urine were collected and analyzed by CLINITEK Atlas urine dry chemistry analyzer.10 parameters were reported for each sample,including SG,pH,BLD,LEU,PRO,GLU,KET,UBG,BIL and NIT.According to the medicals standard of the People's Republic of China,General Technical Requirements for Urine Analyzer(YY/T 0475-2004),General Technical Requirements for Chemical Reagent Strips for Urinalysis(YY/T 0478-2004)and physical,Chemical and Microscopic Examination of Urine(WS/T 229-2002),the precision,accuracy,carryover,stability,sensitivity and consistency of each parameter were evaluated.The agreement was assessed between the results for BLD and LEU obtained from CLINITEK Atlas analyzer and phase contrast microscope,and calculated the sensitivity and specificity of CLINITEK Atlas analyzer for BLD and LEU using phase contrast microscope as the gold standard.SG and pH test was performed among 200 specimens by CLINITEK Atlas analyzer,and then compared with the results obtained from MASTER-SUR-NM specific gravity refractometer and pH precision test strips respectively.In addition to SG and pH,the other eight parameters were compared with the results obtained from CLINITEK 500 urine analyzer,and Kappa value and consistency were calculated.Results The accuracy,precision,sensitivity,carryover and stability of 10 parameters could meet all the requirement of standards.SG and pH had good correlation with urine specific gravity refractometer (r =0.9838,P ＜0.001)and pH meter (r =0.8884,P ＜0.001),respectively.Compared with phase contrast microscope,BLD and LEU had coincidence rates of 90.4％ and 90.8％,respectively; Sensitivities were 90.7％ (301/332) and 83.3％ (200/240) ; Specificities were 89.9％ (152/169) and 97.1％ (255/261).Compared with CLINITEK 500,all the parameters,except for SG and pH,had good coincidence rates of ＞ 87.6％.Conclusion The performance of CLINITEK Atlas urine dry chemistry analyzer can meet the clinical requirements of all standards.