2.RNAi silencing MTA1 gene inhibits invasion and migration of esophageal carcinoma 9706 cells
Songhua YANG ; Guoqiang ZHAO ; Hong ZHENG ; Jimin ZHAO ; Ziming DONG
Journal of Third Military Medical University 1988;0(06):-
Objective To observe the effect of RNAi that silences MTA1 gene on invasion and migration of esophageal carcinoma 9706 cells. Methods The siRNA expression vector that silences MTA1 gene was transfected into EC9706 cells by liposome. MTA1 mRNA and protein expressions were detected through quantitative RT-PCR and Western blot, respectively. The invasion and migration of EC9706 cells were evaluated by scrape wound healing assay and cell invasion assay in vitro. Results MTA1 gene expression significantly decreased. The scrape wound of EC9706 cells healed more slowly and the cell population that cut through Matrigel were less in the EC9706 cells transfected with siRNA expression vector than non-transfected EC9706 cells and the EC9706 cells transfected with blank vector (P
3.The morphological features of dynamic contrast enhanced MR in non lactation mastitis
Hong ZHAO ; Suisheng ZHENG ; Liwei ZOU ; Wenjun YAO
Journal of Practical Radiology 2015;(9):1439-1442
Objective To assess the value of the dynamic enhanced MR (DE-MRI)morphological features in diagnosis of non lac-tation mastitis.Methods We retrospectively studied the breast DE-MRI image data of 1 5 patients with non lactation mastitis con-firmed by pathology were retrospectively studies and the lesion morphological features and distribution were analyzed.Results Amonge 1 5 patients with non lactation mastitis,6 cases were the plasma cell mastitis,5 cases were granulomatous mastitis,2 cases were abscess,and 2 cases were cyst associated with inflammation.The typical features of non lactation mastitis on DE-MRI were fast wash-in,centrifugal enhancement sign,blur boundaries between lesions and normal breast tissue,increasing unilateral vessel sign in diseased breast.Conclusion Breast DE-MRI can show typical morphological features of non lactation mastitis.When dynam-ic information is obtained inconveniently,these are helpful in diagnosing and differential diagnosing non lactation mastitis.
4.A Novel Method of Normal Estimation for Visualization of Medical Images
Dihui HONG ; Gangmin NING ; Ting ZHAO ; Juan YE ; Xiaoxiang ZHENG
Space Medicine & Medical Engineering 2003;16(3):157-161
Objective Normal estimation is the key step for volume visualization. Commonly used methods for normal estimation are based on interpolation and derivative. A novel normal estimation algorithm based on approximation for visualization of medical images was presented in this paper. Method It approximated the density function in local neighborhood with a second-degree polynomial function. The coefficients of the polynomial function were solved by minimizing the error of the approximation and the gradient vector at arbitrary point was obtained directly from the analytical derivative of the density function without interpolation. Because of symmetry, the solution of this equation was simplified.This method was tested in several volume data sets. The results and the generation time by different methods were obtained and compared. Result The results showed that this algorithm produced satisfactory quality images while the computational complexity was not increased. Conclusion This approach is preferable for most applications, especially for medical images reconstruction.
5.The relationship between hypertriglyceridemic-waist phenotype and diabetic nephropathy in patients with type 2 diabetes mellitus
Ling FENG ; Wei ZHAO ; Xiao ZHENG ; Hong ZHANG
Chinese Journal of Endocrinology and Metabolism 2013;(5):374-376
[Summary] According to the cutpoint of plasma triglycerides concentration ≥ 1.7 mmol/L,waist circumference ≥85 cm in men or ≥80 cm in women,459 patiens with type 2 diabetes mellitus were divided into four groups:normal waist circumference and triglycerides,normal waist circumference and hypertriglyceridemia,abdominal obesity and normal triglycerides,and hypertriglyceridemic-waist (HTWC) group.The results showed that body mass index,waist circumference,systolic blood pressure,triglycerides,microalbuminuria,and homeostasis model assessment insulin resistance index (HOMA-IR) in HTWC group were higher than those in non-HTWC groups (all P<0.01),as well as higher diabetic nephropathy incidence (P<0.05).Multiple logistic regression analysis revealed that HTWC was an independent risk factor of diabetic nephropathy (OR =2.070,95 % CI 1.195-3.586).
6.Diagnosis and treatment of solid-pseudopapillary tumor of the pancreas in children
Huijuan WANG ; Huanmin WANG ; Hong QIN ; Zheng ZHAO ; Jun LI
Chinese Journal of General Surgery 2008;23(11):856-858
Objective To discuss the clinical manifestations, diagnosis and treatment of solidpseudopapillary tumor of the pancreas (SPTP) in children. Methods Clinical data of 12 cases of SPTP admitted to Beijing Children's Hospital from Mar 2001 to Mar 2007 were collected and analyzed retrospectively. Result There were 7 females and 5 males among the patients. The mean age was 13.6 years. The main symptoms were abdominal pain and mass. Tumors located in the head in 4 cases, in the body and tail of the pancreas in 8 cases. Five cases underwent tumor enucleations, one case underwent body resection of the pancreas, two cases underwent Whippple's procedure including one recurrent case, five cases underwent body and tail resection of the pancreas plus splenectomy. All these 12 cases were followed up for 6 months to 6 years. One case lost follow-up 6 months after body and tail resection of the pancreas plus spleneetomy. Another one suffered from live tumor one year after operation and refused surgical exploration and lost follow-up. The other 10 cases were still alive. Conclusion SPTP are predominantly seen in adolescent females. For its benign clinical behavior and relatively good prognosis, surgical resection is the main choice of therapy.
7.Expression and clinical significance of four miRNAs in epithelial ovarian cancer
Jiayu LIU ; Yanrui ZHAO ; Lina ZHANG ; Ye YAN ; Hong ZHENG
Tianjin Medical Journal 2015;(9):996-999,1000
Objective To determine the expressions of miR-200a, miR-141, miR-205 and miR-34a in epithelial ovarian cancer (EOC) samples and to explore their clinical significance. Methods According to FIGO staging, 44 EOC pa?tients were divided into two groups:early FIGO stage (stageⅠ-Ⅱ, n=15) and late FIGO stage (stageⅢ-Ⅳ, n=29). Expres?sions of 4 miRNAs were detected by real time quantitative PCR, and were compared between two groups. The correlation of 4 miRNAs was calculated. EOC patients were divided into high miRNA expression group and low expression group according to the median value of miRNAs expression. Kaplan-Meier survival analysis and Cox multivariate analysis were used to com?pare the age, FIGO state, tumor residual after operation and post-operative chemotherapy of ovarian cancer between two groups. Results The expression of miR-141 was elevated in stagesⅢandⅣcompared with that of stagesⅠand Ⅱ(P=0.036). There was a positive correlation between expression of miR-141, miR-200a and miR-205, but a negative correlation with miR-34a (P<0.05). There was a positive correlation between miR-200a and miR-205 (P<0.05). Lower miR-200a ex?pression was associated with shorter progress free survival in ovarian cancer analyzed by log-rank test ( P=0.035). The sur?vival rate was significantly higher in FIGO stages ⅠandⅡthan that of FIGO stagesⅢandⅣ(P<0.05). Cox regression analysis revealed that miR-200a, FIGO stage and age were influential factors of overall survival time and progress-free sur?vival time of ovarian cancer, while miR-141, miR-205, miR-34a and tumor residual after operation and post-operative che?motherapy were not influential factors. Conclusion The expression of miR-200a is closely correlated with the progress and prognosis of ovarian cancer and may be used as an independent indicator for ovarian cancer prognosis.
8.Evaluation of the effect of remote lifestyle intervention on the management of weight and related indicators in the overweight and obese population
Hui HE ; Weiqing WU ; Rui PENG ; Hong ZHENG ; Li ZHAO
Chinese Journal of Health Management 2021;15(2):151-157
Objective:To evaluate the effect of remote lifestyle intervention on the management of weight and related indicators in the overweight and obese population.Methods:A total of 400 individuals with overweight or obesity who participated in remote lifestyle intervention in the Health Management Department of Shenzhen People′s Hospital from May 2015 to December 2018 were included as the remote intervention group, and 400 individuals with overweight and obesity who matched their age and gender were selected as the control group. Dietician established individual WeChat groups with the remote intervention group, and the WeChat platform was used to conduct remote lifestyle intervention for them, including setting weight control goals, giving timely feedback to the food log based on photos, providing exercise guidance and psychological support. The control group received personalized diet and exercise prescriptions, but did not receive remote intervention. After adjusting the data by propensity score matching method, univariate and multivariate logistic regression models were used to analyze the management effect of weight and related indicators in the two groups after one year.Results:After one year of intervention, effective data were obtained from a total of 755 cases (371 cases in the remote intervention group and 384 cases in the control group), and effective data were retained from 446 cases (223 cases in the remote intervention group and 223 cases in the control group) after bias matching. The body mass index (BMI), systolic blood pressure, fasting blood glucose, triglyceride, total cholesterol, low-density lipoprotein, and serum uric acid of the remote intervention group [(24.85±2.52) kg/m 2, (110.21±10.53) mmHg, (4.96±0.65) mmol/L, (1.25±0.82) mmol/L, (4.87±1.11) mmol/L, (2.88±0.74) mmol/L, and (306.01±95.66) mmol/L respectively] were significantly lower than that of the control group [(27.76±2.28) kg/m 2, (121.14±14.07) mmHg, (5.10±0.87) mmol/L, (1.54±0.83) mmol/L, (5.28±0.96) mmol/L, (3.13±0.80) mmol/L, (355.16±92.68) mmol/L respectively] (all P<0.05). After intervention, intervention was consistently being influencing factors when BMI was reduced by 4%―12%, ( P<0.05). The probability of a 12% reduction in BMI in the remote intervention group was 112.486 times higher than that in the control group (95% CI: 16.852-890.266). At the same time, the initial BMI was an influential factor for the restoration of normal BMI. For every 1 kg/m 2 decrease in the initial BMI, the probability of restoration of normal BMI was 4.76 times higher than that before the decrease (95% CI: 3.222-5.057). Conclusions:Remote lifestyle intervention has a certain effect on the management of weight and related indicators in the overweight and obese populations. It has significant effect on weight loss of overweight and mildly obese people, but has limited effect on moderate and severe obese people.
9.The effect and mechanism of resveratrol on autophagy regulation in nasopharyngeal carcinoma CNE-2 cells
Min WANG ; Hong ZHAO ; Jiafa ZHENG ; Yuanjie XIE ; Pingbo YAO
Tianjin Medical Journal 2017;45(2):143-145
Objective To investigate the effect of resveratrol on autophagic flux of nasopharyngeal carcinoma CNE-2 cells, and to explore the underlying mechanism. Methods Nasopharyngeal carcinoma CNE-2 cells were divided into control group and resveratrol group. Cells in control group were normally cultured at 37℃and received no further treatment. Resveratrol group was added 40 μmol/L resveratrol 2 h before cells were culture at 37 ℃. Western blot analysis was performed to detect protein expressions of LC3B, p62, Beclin-1, phospho-mTOR (p-mTOR) and phospho-S6 (p-S6). The autophagic flux was detected under the confocal laser scanning microscopy through different color spots, after cells were transfected with adenovirus encoding GFP-mRFP-LC3. Results (1) The protein expression of LC3B was significantly increased and the protein expression of p62 was significantly decreased in resveratrol group compared with those of control group (P<0.05). There was no significant difference in Beclin-1 expression between two groups. (2) Compared to control group, expressions of p-mTOR and p-S6 were significantly decreased in resveratrol group (P<0.05). (3) Compared to control group, the red mRFP puncta were significantly increased, and the yellow GFP puncta were significantly decreased in resveratrol group (P<0.05). Conclusion Resveratrol promotes the autophagic flux of nasopharyngeal carcinoma CNE-2 cells, and the effects are possibly dependent on the activation of mTOR pathway-related proteins.
10.Detection and clinical value of novel GATA6 mutations associated with congenital atrial septal defects
Guifen ZHENG ; Hong ZHAO ; Dong WEI ; Ning ZHOU ; Xingyuan LIU
Chinese Journal of Laboratory Medicine 2012;(12):1108-1111
Objective To identify novel mutations in the GATA6 gene associated with congenital atrial septal defects (ASD).Methods This was a case-control study.A cohort of 220 unrelated Han-race patients with congenital ASD and 200 unrelated ethnically matched healthy individuals used as controls,who were admitted to Tongji University Affiliated Tongji Hospital from January,2007 to October,2011,were recruited.The peripheral venous blood samples from the participants were prepared.All the coding exons and their flanking sequences of the GATA6 gene were amplified by polymerase chain reaction and sequenced using the di-deoxynucleotide chain termination technique.The acquired sequences were aligned with the sequences derived from GenBank by BLAST to identify the sequence variations.The software ClustalW was used to analyze the conservation of the altered amino acids.Results Three novel heterozygous missense GATA6 mutations,c.250G >A (p.A84T),c.649G >C (p.G217R) and c.1270A >C (p.S424R),were identified in 3 of 220 ASD patients,respectively.None of the three mutations was detected in 200 healthy control individuals.A cross-species alignment of GATA6 encoded protein sequences showed that the mutated amino acids were relatively conserved evolutionarily.Conclusion The identification of novel GATA6 mutations associated with ASD contributes to the reveal of the mechanism involved in the pathogenesis of ASD.