1.Research advances of phosphokinases for α-synuclein
Yuanyuan ZENG ; Zhongqin LIANG
Chinese Journal of Pharmacology and Toxicology 2009;23(6):485-489
Abnormal aggregation of α-synuclein(α-Syn) is thought to be a key event in the pathogenesis of Parkinson disease (PD). In recent years, it was shown that above 90% of α-Syn deposited in Lewy bodies in brain tissues from patients with PD is phosphorylated, which suggested that α-Syn phosphorylation be connected with the occurrence of PD. Several kinds of phosphokinases can make α-Syn phosphorylated, however the precise roles of these phosphokinases in PD are less clear.
2.Use of the stochastic frontier cost model in the technical efficiency evaluation of TCM hospitals
Weicheng WANG ; Wu ZENG ; Yuanyuan BING
Chinese Journal of Hospital Administration 1996;0(05):-
Objective To analyze the present situation of technical efficiency in TCM hospitals throughout the country, discuss the influencing factors causing inefficiency and propose corresponding suggestions. Methods The technical efficiency in 60 TCM hospitals in the country was analyzed using the stochastic frontier cost model for panel data and the influencing factors causing inefficiency were discussed using the multiple stepwise regression method. Results The average technical inefficiency was 22.59% and inefficiency showed an upward trend as the areas shifted from the eastern through the middle to the western regions. Five factors, including the utility rate of beds and the proportion of health technicians among the entire hospital staff, were statistically significant so far as the effect on the increase of the overall cost was concerned. Conclusion The stochastic frontier cost model for panel data is the best method for evaluating the technical efficiency in TCM hospitals. On the basis of the above analysis, suggestions for strengthening scientific management, improving the utility rate of resources and reducing unnecessary waste are put forward.
3.Association between weight gain induced by atypical antipsychotic and the polymorphisms of MC4R gene rs12970134
Xuan ZHANG ; Huansi ZENG ; Yuanyuan GUO ; Yeya YANG ; Zhili WANG
Chinese Journal of Primary Medicine and Pharmacy 2016;23(13):1963-1966
Objective To determine the association between weight gain induced by atypical antipsychotic and the polymorphisms of MC4R gene rs12970134.Methods 62 patients who had weight gain more than 7% of their pre -drug body weight were selected as study group,and 62 patients who had weight gain less than 7% of their pre -drug body weight were selected as control group.The polymorphism of MC4R gene rs12970134 was analyzed by using polymerase chain reaction and directly sequencing technology.Results There were no significant differences in the frequency of MC4R gene rs12970134 genotypes and alleles between the two groups(χ2 =0.648,P =0.723;χ2 =0.679,P =0.410).While after the treatment with atypical antipsychotic,the weight gain degree in patients with GG genotypes was less than patients with GA /AA genotypes[(22.18 ±0.33)kg/m2 vs.(23.53 ±0.58)kg/m2 ](t =-2.167,P =0.032).Conclusion The polymorphisms of MC4R gene rs12970134 maybe affect the weight gain degree in patients after treatment with antipsychotic.
4.Current status of radioimmunoimaging and radioimmunotherapeutic antibody drugs
Yonglong ZENG ; Qimin DENG ; Yuanyuan LIU ; Bangjin WANG
Chinese Journal of Nuclear Medicine and Molecular Imaging 2016;36(2):196-200
Radiolabeled monoclonal antibodies can specifically bind to tumor-associated antigens.On this immune basis,RIT and RII have therefore been used in the diagnosis and treatment of cancer.Many RIT and RII pharmaceuticals were applied in trials of preclinical and clinical phases,and excellent results had been achieved.This paper reviews on the current status of RIT and RII pharmaceuticals.
5.Clinical manifestations of liver in congenital disorders of glycosylation
Yuanyuan WANG ; Yongmei ZENG ; Shaoming ZHOU ; Guoqing DONG
International Journal of Pediatrics 2021;48(5):323-326
Congenital disorders of glycosylation(CDG)are caused by defects in the synthesis of glycans and their binding to proteins and lipids.Up to now, over 100 types of CDG have been identified.This disease can cause functional damage to multiple organs including liver, kidney and heart.The CDG types with predominant or isolated liver involvement including MPI-CDG, TMEM199-CDG, CCDC115-CDG, and ATP6AP1-CDG.Their clinical manifestations include enlarged liver, elevated transaminase, cholestasis, liver fibrosis, liver failure, abnormal ceruloplasmin, and copper accumulation.Their pathological manifestations include steatosis, fibrosis, liver cirrhosis, cholestasis, and abnormal bile duct.This review mainly describes the types of CDG and their pathogenesis, clinical manifestations and liver involvement to provide a perspective for the diagnosis of CDG with liver manifestations.
6.Effects of BMP-7 on Id2 and E2A expression in NRK-52E cells exposed to high glucose
Lingping ZENG ; Ying XIAO ; Yingying ZHANG ; Changzhi ZHANG ; Depei WU ; Yuanyuan LI ; Mingjun SHI ; Bing GUO
Chinese Journal of Pathophysiology 2016;32(2):321-326
AIM: To investigate the effects of bone morphogenetic protein 7 ( BMP-7 ) on the expression of transcription factor E2A and inhibitor of differentiation 2 (Id2) in the renal tubule epithelial cells(NRK-52E)exposed to high glucose, and to explore its possible mechanism of improving renal tubular fibrosis induced by high glucose.METH-ODS:The NRK-52E cells were divided into control group, high glucose (HG) group and high glucose with different doses of BMP-7 (10μg/L and 20μg/L) group.The cells in HG group and BMP-7 group were cultured for 12 h, 24 h and 48 h. The protein expression of Id2, E2A, E-cadherin,α-smooth muscle actin (α-SMA) and collagen-I was detected by Western blot.In addition, the mRNA expression of Id2 was detected by real-time PCR.RESULTS:Compared with control group, the mRNA and protein levels of Id2 and the protein level of E-cadherin were down-regulated, while the protein levels of E2A,α-SMA and collagen-I were up-regulated in HG group (P<0.05).Compared with HG group, the mRNA and pro-tein levels of Id2 and the protein level of E-cadherin were significantly up-regulated, while the protein expression of E2A,α-SMA and collagen-I was significantly down-regulated in 20 μg/L BMP-7 group ( P<0.05 ) .The correlation analysis showed that the Id2 protein level was negatively correlated with the E2A protein level (P<0.05).CONCLUSION:BMP-7 may intercept the process of renal tubule fibrosis induced by high glucose via promoting the expression of Id2 and inhibi-ting the expression of E2A at protein level.
7.Preparation technology of new gel-purified prothrombin complexes concentrates
Min ZHOU ; Renyong ZENG ; Yuanyuan LIU ; Changqing LI ; Haijun CAO ; Zechao HE
Chinese Journal of Biochemical Pharmaceutics 2016;36(11):192-196
Objective To study the process conditions for new gel Capto DEAE ion exchange chromatography to purify prothrombin complexes concentrates.Methods After removal of cryoprecipitate by centrifugation, healthy human plasma was mixed with DEAE-Sephadex A-50 gel.After that, the gel were washed and eluted to obtain eluate; then, the eluate, after being ultrafiltered, was loaded on a column packed with Capto DEAE-gel for chromatography to prepare PCC which was later determined for activities of coagulation factors Ⅱ,Ⅶ,Ⅸ,Ⅹ and anticoagulation protein C, with their yield calculated.Besides, the protein concentration of PCC was determined using the Bradford method, based on which the specific activity of the four coagulation factors and protein C were calculated. According to the results, purification effect of Capto DEAE-gel on the PCC was analyzed. Results Under different experimental conditions, the yield and purity of the coagulation factors FⅡ,FⅨ and FⅩ were high, and the equilibrum degree of the three factors was good;however, the yield and purity of coagulation factor FⅦwere very low.When the three variables ( sodium citrate, NaCl and pH) in balanced solution, washing solution and elution were 0.020-0.028 mol/L, 0.10-0.15 mol/L and 6.9-7.2;0.012-0.020 mol/L, 0.10-0.15 mol/L and 6.9-7.2;0.005-0.012 mol/L, 2.4 mol/L and 7.2-7.5 , respectively,the yield and purity of PCC prepared from Capto DEAE-gel were good. Under this condition, yield of factor Ⅸ was ( 74.40 ±10.89 )% and purity of factor Ⅸ was ( 3.31 ±0.31 ) IU/mL.Under different experimental conditions, yield and specific activity of anticoagulant protein C were higher.Conclusion The purity of four coagulation factors and anticoagulation protein C of PCC prepared by the new method that combined the batch adsorption with DEAE-sephadex A-50 was combined with column chromatography packed with Capto DEAE-gel are higher than those prepared by the routine procedure.Furthermore, the PCC are better than these products obtained by traditional process, whose purity are 2.17-3.31IU/mg.Therefore, these studies will lay the groundwork for exploring novel preparation process of producing PCC.
8.The effect of A375 cells corylin melanin synthesis
Yuanyuan PEI ; Guoliang LIU ; Shu ZENG ; Ying HAN ; Lei WANG ; Yan QU ; Jinghua CHEN ; Ning ZHANG
International Journal of Traditional Chinese Medicine 2017;39(5):430-434
Objective To study the effect of Corylin on A375 cells melanin synthesis,and explore its mechanism.Methods The cells were randomly divided into the control group, the estradiol group, and corylin group including 10-3μmol/L, 10-2μmol/L, 10-1μmol/L, 1μmol/L, 10μmol/L, 100μmol/L. Estradiol estradiol intervention group were given 10-3 mol/L. Corylin group (10-3μmol/L, 10-2μmol/L, 10-1μmol/L, 1μmol/L, 10μmol/L,100μmol/L) were given 10-3μmol/L, 10-2μmol/L, 10-1μmol/L, 1μmol/L, 10μmol/L, 100μmol/L corylin intervention. The activity of proliferation were detected by MTT, NaOH method, dopa oxidation , both melanin content and tyrosinase activity (tyrosinase, TYR). TYR, yrosinase related protein (tyrosinase related protein, TRP)-1 and TRP-2 expression levels of mRNA were determined by RT-PCR.Results Compared with the control group, 10, 100μmol/L of Corylin group cell proliferation rate significantly decreased (P<0.01). The 1μmol/L, 10-1μmol/L, 10-2μmol/L of Corylin group cell melanin content, TYR significantly decreased (P<0.01 or P<0.05). The 1μmol/L corylin group TYR (0.303 ± 0.003vs. 0.628 ± 0.012), TRP-1 (0.313 ± 0.008 vs. 0.677 ± 0.022), TRP-2 (0.456 ± 0.028vs. 0.687 ± 0.020) mRNA expression level significantly decrease (P<0.01).Conclusions The results showed that Corylin could inhibit melanin synthesis, which worked probably through inhibiting the activity of TYR and cutting the mRNA expressions of TYR,TRP-1/2.
9.The expression of BMP-2 mRNA of rat osteoblast cell sheets cultured with ascorbic acid
Chengju ZHOU ; Jianjiang ZHOU ; Hong YANG ; Jiufeng MAO ; Xiao ZENG ; Yuanyuan JIA ; Yuting WANG ; Qiang DONG
Journal of Practical Stomatology 2015;(3):305-308
Objective:To study the effects of ascorbic acid on BMP-2 mRNA expression of osteoblast cell sheets.Methods:Rat os-teoblasts were primaryly cultured and identified;osteoblast cell sheets were built by physical scraping method in vitro;the osteoblast cell sheets were cultured with 1 5,50 and 85 mg/L ascorbic acid for 1 and 2 weeks respectively,and the expression of BMP-2 mRNA of the cell sheets was detected by RT-qPCR.Results:The obtained cells were conformed to be osteoblasts.The osteoblast cell sheets could be rolled into tube in vitro.The expression of BMP-2 mRNA of osteoblast cell sheets in experiment group,whether in week one or week two was higher than that in control group,50 mg/L group showed the highest expression(first week P <0.05;second week P>0.05);the expression of any group in week two was higher than that in week one(P <0.05).Conclusion:Ascorbic acid may pro-mote the expression of BMP-2 mRNA in osteoblast cell sheets.
10.Diagnostic value of conventional ultrasonography combined with ultrasonic elastography for breast intra-ductal papillary lesion
Dan LUO ; Zhixian LI ; Jian ZENG ; Junjie LIU ; Yuanyuan CHEN ; Sida WANG ; Xueming DING
Journal of Medical Postgraduates 2014;(10):1065-1068
Objective Breast intraductal papillary lesion ( BIPL) has a low incidence but a high rate of malignancy .This study discusses the diagnostic value of conventional ultrasonography ( US) combined with ultrasonic elastography ( UE) for breast papil-lary lesion. Methods We analyzed the preoperative ultrasound data of 48 patients with 63 BIPLs, and classified them according to the characteristics of two-dimensional ultrasound (2DUS) images.Then we compared their color Doppler ultrasound characteristics and UE features with the pathological results . Results Based on the 2DUS findings, the BIPLs were divided into 4 types.The sensitivi-ty, specificity, and accuracy of conventional US +UE in the diagnosis of BIPL were 93.2%, 88.9%, and 90.5%, respectively, markedly higher than those of conventional US (75.6%, 66.7%, and 73.0%), with statistically significant differences in the areas under the curve between the two methods (0.918 vs 0.838, P<0.05). Conclusion Conventional US combined with UE can im-prove the diagnosis of breast intraductal papillary lesion .