1.Research progress of ovarian cancer apoptosis related factor-Survivin and Smac
Journal of International Oncology 2015;(4):313-315
Survivin is the strongest member of the inhibitor of apoptosis protein(IAP)family. Smac is the second mitochondria-derived activator of cysteine proteases,which can promote apoptosis by combining with IAP. Abnormal expression of them is closely related with occurrence,development,treatment tolerance and prognosis of ovarian cancer. It is prompted that Survivin and Smac are expected to play important roles in the early diagnosis and targeted therapy of ovarian cancer.
2.Interpretation in American Institute of Ultrasound in Medicine practice guideline for the performance of neurosonography in neonates and infants (2014)
Dan QI ; Dan CHEN ; Xiaoyan MA ; Chaoxiang YANG ; Chunyi ZHANG
Chinese Journal of Applied Clinical Pediatrics 2016;31(12):894-895
This guideline was published by the American Institute of Ultrasound in Medicine,which has been developed to assist physicians performing sonographic studies of the brain in neonates and infants.Neurosonography should be performed only when there is a valid medical reason,and gain the necessary diagnostic information.Although it is not possible to detect every abnormality,adherence to the following guideline will maximize the detection of most abnormalities of the brain in neonates and infants that can be imaged with ultrasound.
3.Expression of a lysozyme from antheraea pernyi in pastoris and the effects of recombinant Ap-lysozyme on Streptococcus mutans
Dan WANG ; Weidong MA ; Huijuan YU
Journal of Practical Stomatology 2000;0(05):-
Objective: To construct the antheraea pernyi lysozyme(ApLZ) expression system using the methylotrophic yeast Pichia pastoris, to assay the antibacterial activity of the recombinant ApLZ against Streptococcus mutans. Methods:The ApLZ expression system was used in the expression and purity of Ap-lysozyme. The antibacterial activity of the recombinant ApLZ against Streptococcus mutans were assayed by using agar diffusion method. Results:Expression system of ApLZ was constructed using the methylotrophic yeast Pichia pastoris as a host. ApLZ was expressed correctly and secreted efficiently when the native signal sequence of ApLZ was used as secretion signal. The level of ApLZ expression in Pichia pastoris peaks at 96 h after the induction of sustaining 5 ml/L methanol. The molecular weight of the recombinant ApLZ is about 20 000. Conclusion:The recombinant ApLZ is active in inhibiting the growth of Streptococcus mutans.
4.Effects ofYiqi Huoxue Jiedu Recipe on Immunomodulatory of Patients with Advanced Ovarian Cancer
Huiling YAN ; Dan MA ; Wenping LU
Chinese Journal of Information on Traditional Chinese Medicine 2016;(1):27-30
Objective To study the effects ofYiqi Huoxue Jiedu Recipe on immunomodulatory of patients with advanced ovarian cancer.Methods It was performed in a single-arm, open-label study with 40 patients with advanced epithelial ovarian cancer. All patients were treated withYiqi Huoxue Jiedu Recipe lasting for 4 weeks (200 mL, twice a day). The main endpoint was the quantities of CD4+CD25+ cells, CD8+CD28- regulatory T cells and CD8+CD28+ cytotoxic T cells measured by flow cytometry, and the accessory endpoints were variations of symptoms which included pain, fatigue, and numbness etc.Results The quantities of CD4+CD25+ and CD8+CD28- cells significantly decreased compared with those of pre-treatment (P<0.05); the quantity of CD8+CD28+ cell increased significantly (P<0.05). Except for pain, significant improvement showed in fatigue, tinnitus, numbness, poor appetite, abdominal discomfort, insomnia, diarrhea and abnormal urinate (P<0.05).ConclusionYiqi Huoxue JieduRecipe is proved to be effective in regulating immunosuppression advanced ovarian cancer and improving patients’ life quality.
5.Application of 18F-FDG PET/CT in rheumatoid diseases
Limin REN ; Liyun ZHANG ; Dan MA
Chinese Journal of Nuclear Medicine and Molecular Imaging 2017;37(2):111-114
Rheumatoid diseases (RD) are a group of diseases affecting bones,joints,and the surrounding soft tissues,such as muscle,synovial membrane,tendons,fascia,nervus.The etiology and pathogenesis are complicated.Since most RD are systemic diseases,traditional imaging techniques have limited value for the diagnosis and treatment monitoring of RD.18F-FDG PET/CT can display morphologic and metabolic information simultaneously,and is considered as a potential tool for the diagnosis of RD.This review summarizes the application of 18F-FDG PET/CT in RD,such as systemic vasculitis,relapsing polychondritis and rheumatoid arthritis.
6.Expression of Skp2 and its Relationship with VEGF and MVD in Colorectal Carcinoma
Dan MA ; Li ZHANG ; Shaoyong XU
Chinese Journal of Gastroenterology 2016;21(6):340-343
Background:In recent years,the incidence and mortality of colorectal carcinoma have been increasing rapidly. Diagnosing and treating cancer at gene level have become a new effective approach. Aims:To investigate the expression of S-phase kinase-associated protein 2(Skp2)and its relationship with vascular endothelial growth factor(VEGF)and tumor microvessel density(MVD)in colorectal carcinoma. Methods:Thirty-five colorectal carcinoma patients from March 2014 to March 2015 at People’s Hospital of Hubei University of Medicine were enrolled. Fifteen para-cancerous tissue samples were served as controls. The expressions of Skp2,VEGF and MVD value were determined by immunohistochemical SP, and their relationships with clinicopathological characteristics were analyzed. Results:The expression of Skp2 in colorectal carcinoma was significantly higher than that in para-cancerous tissue( P = 0. 000),and was correlated with tumor differentiation and lymph node metastasis(P < 0. 05),but not with gender,age and TNM stage(P > 0. 05). Expression of VEGF and MVD value were significantly higher than those in para-cancerous tissue(P = 0. 019,P = 0. 002),and were correlated with lymph node metastasis and TNM stage(P < 0. 05). Expression of Skp2 was positively correlated with the expression of VEGF and MVD value in colorectal carcinoma( r = 0. 569,P = 0. 000;r = 0. 481,P = 0. 017 ). Conclusions:The abnormal high expression of Skp2 is involved in the angiogenesis of colorectal carcinoma. Skp2,VEGF expressions and MVD value may be served as important markers for malignancy degree of colorectal carcinoma.
7.Cardioprotective effects of sevoflurane postconditioning on surgery patients undergoing cardiopulmonary bypass with diabetes mellitus
Dan LUO ; Weifang XU ; Haiping MA
The Journal of Practical Medicine 2017;33(11):1846-1849
Objective To investigate the Cardioprotective effects of sevoflurane postconditioning on surgery patients undergoing cardiopulmonary bypass with diabetes mellitus ,in order to provide theoretic basic for clinical practic. Methods 180 patients of undergoing cardiopulmonary bypass sugery were divided into 3 groups:A group:64 patients undergoing heart valve replacement with Type II diabetes. B group:64 patients Pa-tients undergoing heart valve replacement without diabetes ,the group A and B were treated by sevoflurane post-conditionging for 10 minutes before the end of cardiopulmonary bypass. C group:60 patients undergoing heart valve replacement without diabetes,no sevoflurane postconditionging;Three groups of patients detect perioperative tro-ponin T and Creatine Kinase Isoenzyme-MB ,observed and following up the occurrence of postoperative com-plications. Results CK-MB and cTnT were compared at 8 and 24 hours after operation:two biochemical indi-cators of group A and C at different time points after operation were significantly higher than those in group B (P < 0.05),With significant statistical difference , The number of patients with heart failure and malignant arrhythmia in group A and C was higher than group B(P < 0.05),Differences in 30 day mortality and other clinical data between the three groups were not statistically significant. Conclusion Sevoflurane postconditionging has significant myocardial protection effect for patients undergoing valve replacement surgery without diabetes , however ,the myocardial protective effect of patients who undergoing valve replacement surgery with diabetes was weakened.
9.THE DIFFERENTIAL SCREENING OF SERUM PROTEINS IN DIET-INDUCED OBESE AND OBESE-RESISTANT RATS
Dan ZHAO ; Weiwei MA ; Shuran WANG
Acta Nutrimenta Sinica 2004;0(05):-
Objective:To explore the difference in susceptibility to high-fat diet induced obesity in rats,as well as the changes of serum proteins. Method:Forty male SD rats were divided into basic group and high-fat diet group randomly. After 5w feeding DIO(diet-induced obesity)and DIO-R(diet-induced obesity resistance) rats were selected according to their body weight gain. The rats were sacrificed and the changes of serum proteins were screened using WCX2 proteomic chips made by American Ciphergen Biosystems. Results: DIO rats were significantly different from DIO-R rats in body weight,body-fat ratio,blood glucose and blood lipids. At the molecular weight range between 2 to 100 ku,the proteins with molecular weight of 7 945 and 9 513 were significantly expressed differently between DIO and DIO-R rats,and the proteins with molecular weight of 4496, 6152, 6267 were significantly expressed differently between DIO-R and control rats (the rats were fed basic diet). Conclusion:Different susceptibility to DIO or DIO-R was found in SD rats when they were fed high-fat diet. The differentially expressed serum proteins between DIO rats and DIO-R were observed,which might provide the basis for further isolation,purification and identification of these proteins.
10.Determination of Malachite Green in Water by High Performance Liquid Chromatography
Yingai GUI ; Lin MA ; Dan WANG
Journal of Environment and Health 2007;0(08):-
Objective To develop a sensitive HPLC method for the determination of malachite green in fresh water. Methods The HPLC column of ZORBAX SB-C18 (250 mm?4.6 mm, 5 ?m) was employed and acetonitrile and acetate buffer (0.1 mol/L, pH=4.5, V∶V=80∶20) were taken as the mobile phase. The samples were tested at wave length of 588 nm after post-column oxidation with PbO2 flowed at 1.5 ml/min. Results The average recovery rate were 98.5% and 97.8% respectively at the water concentration of 2.0 ?g/L and 10.0 ?g/L,the relative standard deviations (RSD) were 11.2% and 8.0%,the least detection limit was 0.02 ?g/L. Conclusion The method is stable,sensitive and suitable for the detection of malachite green in water.