1.Construction of pilot bases for appropriate emergency technologies
Xiaoying SU ; Guojuan DING ; Shimei YU
Chinese Journal of Medical Science Research Management 2014;27(2):179-181
Currently,the medical technology and service capability in grass-root medical institutions are still at low level.This article emphasizes the need for pilot bases of appropriate medical emergency technologies,introducing our experiences in this respect and the effects.We hope to offer reference for the promotion of appropriate medical emergency technologies.
2.Research progress in the regulation of epigenetics on pancreatic β cell function
Jing SU ; Junling LIU ; Xiaoying DING
Chinese Journal of Endocrinology and Metabolism 2015;31(1):78-82
[Summary] Epigenetics defines heritable changes in gene expression that are not coded in the DNA sequence itself.Three systems,including DNA methylation,RNA-associated silencing and histone modification,are used to initiate and sustain epigenetic silencing.Type 2 diabetes mellitus(T2DM) is a polygenic disorder,which is caused by both genetic and environmental factors.However,pathogenesis of T2DM has not been elucidated.Recent studies have indicated that epigenetics may play an important role in the pathogenesis of T2DM,which is involved in the development and differentiation of β cell,secretion of β cell,insulin sensitivity and so on.Researches related to epigenetics may provide a new measure and target to clarify the pathogenesis of T2DM as well as prevent and treat the disease.
3.Formulation design and vitro evaluation of self-microemulsifying drug delivery system
Mugan DING ; Xiaoying LONG ; Danrong LIN
Chinese Traditional Patent Medicine 1992;0(07):-
90% in 20 min and more higher than the control tablets or capsule. CONCLUSION: The optimum formulation suits to slightly soluble drugs with different o/w distribution coefficient.It can provide reference for application of the SMEDDS the practical cases.
4.Effects of different collagenase digestion on yield rate of purified islets in rats
Weiping DONG ; Yangde PENG ; Xiaoying DING ; Yufei WANG ; Yunhong HUANG
Chinese Journal of Organ Transplantation 2012;33(1):53-55
ObjectiveTo compare the yield rate of rats islets between different collagenase digestion groups.MethodsThe SD rats were randomly divided into two groups as following by using random digits table:collagenase P group (pancreas digested by 1 mg/ml collagenase P) and type Ⅴ collagenase group (pancreas digested by 1 mg/ml type Ⅴ collagenase).After pancreas digestion,rat islet cells in two groups were culture,purified and stained with DTZ.The mean islet number and islet equivalent (IEQ) before and after purification were measured under an inverted microscope.The viability of purified islets was assessed by fluorescence staining of aridine orange (AO) and propidium iodide (PI) under the fluorescence microscopy.After purification and culture for two days,islets function was evaluated by insulin releasing tests in the two groups.ResultsBefore purification,there was no significant difference in the islets number obtained from the pancreas between two groups (P>0.05),but there was significant difference in the IEQ (P<0.05).After purification,the islets number in type Ⅴcollagenase group and collagenase P group was (485 ± 113)/pancrease and (643 ± 82)/pancrease,and IEQ was (674 ± 157)/pancreas and (989 ± 126)/pancreas,respectively (P<0.05).Islet viability in type Ⅴcollagenase group and collagenase P group was (96.13 ±1.13) % and (96.38 ± 0.92) % respectively (P>0.05).The results of insulin releasing tests revealed there was no significant difference in islet function stimulated by hypoglycemia and hyperglycemia between two groups (P>0.05).ConclusionTwo types of collagenase are suitable for the islets digestion in rats.The stability of digestion and yield rate of purified islets in collagenase P group are higher than in type Ⅴ collagenase group.
5.Investigation and Countermeasures for Network Moral Abnormality in Medical College Students
Xiaoying ZHAO ; Yanju WANG ; Yunpeng DING ; Xiaobao HOU ; Rude LI
Chinese Medical Ethics 2015;(3):439-442
Based on the field questionnaire survey in different grade undergraduates in some medical colleges , this paper summarized the main performance of network moral abnormality in medical college students , and further analyzed the internal and external causes , thus put forward the countermeasures of strengthening medical college students′network moral education: innovate moral education methods and improve the moral quality of college students;strengthen the network legal system propaganda education , enhance the students′self -discipline con-sciousness;play a role of main channel and enhance the actual effect of network moral education ;meet the require-ments for the internet age and the construct a new administrative team; strengthen the position consciousness , es-tablish network moral education platform;strengthen the guidance function , carry out various kinds of network mor-al education.
6.Clinical study on the relationship between the activation of the IKK-IκB-NFκB pathway and insulin resistance
Lili YAO ; Xiaoying DING ; Yongde PENG ; Xiaojie PAN ; Weiping DONG
Chinese Journal of Endocrinology and Metabolism 2010;26(9):770-773
Objective To explore the difference involved in the activation of inflammation pathway and the plasma level of inflammatory factors in the subjects with different sorts of insulin sensitivity. Methods The study was carried out in 38 women, consisting of obesity (n = 22 ) and control (n = 16 ) groups according to body mass index. The insulin sensitivity was assessed by homeostasis model assessment of insulin resistance (HOMAIR). Plasma concentrations of interleukin-6 (II-6) and IL-1β were determined by enzyme immunoassay. Western blot analysis was used to examine total protein expression and phosphorylation levels of IκB kinase (IKK) ,inhibitor of nuclear factor-κB ( IκB ) in peripheral blood leukcocytes. Electrophoretic mobility shift assay (EMSA)was used to detect the binding activity of NFκB. Results The levels of fasting plasma insulin[62.2 ( 20.0-127. 0) pmol/L vs 19. 15 ( 14. 2-47. 8 ) pmol/L, P<0. 01], HOMA-IR[2. 32 ( 0. 76-5.49 ) vs 0.70(0.53-1.7),P<0.0l], HbA1 C[(5.42±0. 45 ) % vs ( 5.08 ±0. 38) %, P<0. 05], triglyceride[( 1.75 ±0. 68 vs 1.22 ±0. 58 )mmol/L, P<0. 05], plasma IL-6[3. 15 (0. 03-22. 2) pg/ml vs 1.26 (0. 74-6.06 ) pg/ml, P<0. 01], and IL-1 β[6. 53 ( 0. 84-36 ) pg/ml vs 3. 16( 1.48-8. 86 ) pg/ml, P<0. 01]in obesity group were significantly higher than those in control group. Compared with control group, the levels of IKKo, IKKβ expression and IκBα serine phosphorylation in obesity group were markedly increased, while the expression of IκBα was significantly reduced. Accompanied with the degradation of IκBα protein, the binding activity of NFκB in obesity group was significantly increased. Conclusions The plasma levels of IL-6 and IL-1β were significantly raised in obesity group. The activation of IKK-IκB-NFκB pathway is closely associated with the genesis and development of insulin resistance in obese subjects.
7.Tumor Angiogenesis and Dynamic Contrast-enhanced MR Imaging in Non-small Cell Lung Cancer:Imaging-Pathologic Correlation
Wei XING ; Chunhong HU ; Xiaoying ZHANG ; Liang GUO ; Yi DING
Journal of Practical Radiology 2000;0(12):-
Objective To investigate the correlation of dynamic contrast-enhanced (DCE) MRI features with microvessel density (MVD) and vascular endothelial growth factor (VEGF) in non-small cell lung cancer(NSCLC).Methods Conventional MR imaging and dynamic contrast-enhanced scan in thirty-three patients with NSCLC confirmed by pathologyn were performed. MVD and VEGF were stained with immuno-histochemical technique in all cases. Some parameters of DCE MRI, including maximum slope(Smax) and time to peak(TTP) were put more analysis. The relationship between the results of DCE MRI (Smax and TTP) and that of immuno-histochemistry (MVD and VEGF) was analysed.Results The Smax of adeno carcinoma was higher than that of squamous cell carcinoma,but TTP was lower. The difference was obvious difference(t=3.22,P
8.Three-dimensional MR Spectroscopic Imaging of Normal Prostate in Chinese Male Adults: the Effects of Anatomy Zones and Age Groups
Liangping ZHOU ; Xiaoying WANG ; Feiyu LI ; Jianping DING ; Xuexiang JIANG
Journal of Practical Radiology 2001;0(07):-
40 years, old group) without prostate diseases, underwent MRI and MRS examinations. The peripheral zone (PZ) and central gland (CG) of the prostate were distinctly demonstrated on MRI, the right and left side of PZ and CG were divided into bottom, middle and tip regions,totally 12 samples were obtained from each case. The levels of (Cho+Cre)/Cit ratios were calculated on the basis of the MRS metabolic map. Results ①The mean level of (Cho+Cre)/Cit ratios in PZs and CGs of different regions in young group and old group was not significantly different. Statistically significant variation of the (Cho+Cre)/Cit ratio in PZs and CGs in the two groups was detected. ②The mean level of (Cho+Cre)/Cit ratios of PZs between young group and old group was not significantly different. Only Statistically significant variation of (Cho+Cre)/Cit ratios in CGs between two groups was detected. Conclusion The normal levels of prostatic metabolites fluctuate dramatically among individuals. There is metabolic difference between the peripheral and central zone and that of young and old group.
9.MRS in the Differential Diagnosis of Low T_2 Signal Diseases in Peripheral
Xiaoying WANG ; Jianping DING ; Liangping ZHOU ; Jiangxi XIAO ; Xuexiang JIANG
Journal of Practical Radiology 1992;0(11):-
Objective To investigate the MRS characteristic of low T_2 signal in peripheral zone of prostatitis and prostatic carcinoma(Pca) and to evaluate the role of MRS in the discrimination of prostatitis and Pca.Methods After biopsy,24 patients with Hypointense T_2 signal in prostatic peripheral zone were divided into two groups:prostatitis and Pca.3D MRS was performed on the low T_2 area of peripheral zone to measure the ratio of(Cho+Cre)/Cit.Results The mean ratio of(Cho+Cre)/Cit in low T_2 area of prostatitis was 0.98?0.17,whereas that of Pca was 1.41?0.31,statistically significant difference was detected(t=8.89,?
10.Quantitative analysis of prostate adenocarcinoma by magnetic resonance spectroscopy: correlation study with systemic biopsy
Xiaoying WANG ; Liangping ZHOU ; Jianping DING ; Gangzhi SHAN ; Xuexiang JIANG
Chinese Journal of Radiology 2001;0(03):-
Objective To quantitatively evaluate the metabolic changes of prostate adenocarcinoma using magnetic resonance spectroscopy (MRS).Methods Eighteen patients of prostate cancer proved by ultrasound guided systemic biopsy were enrolled in this study.All the puncture locations were marked and the corresponding (Choline+Creatine)/Citrate ratios were calculated on the basis of the MRS metabolic map.Results 204 samples were obtained and 106 of them were diagnosed as cancer.The average (Cho+Cre)/Cit ratio in the 106 positions was 2.53?1.02.The (Cho+Cre)/Cit ratio of cancer area was statistically higher than that of noncancerous area (F=8.64, P