1.Advances in research on CLN3 gene and diseases
Jianhua CHE ; Dongwei MAO ; Shourou LI
China Oncology 2000;0(06):-
CLN3 gene product is an antiapoptotic membrane protein, the expressions of CLN3 in normal tissues and cells are at very low level. Juvenile-Batten disease is a neurodegenerative disease caused by accelerated apoptosis of photoreceptors and neurons resulting from deletion of 1.02 kb in the CLN3 gene. A number of observations showed that CLN3 mRNA and protein are overexpressed in a variety of human cancer cell lines. Blocking of CLN3 expression using an adenovirus-expressing antisense CLN3 inhibited growth and viability of cancer cells. CLN3 may regulate apoptosis through modulating ceramide synthesis or the expression of some down stream genes. More importantly, these results suggested that CLN3 is a novel molecular target for the etiology, progression and theraputics of cancer.
2.Study of teratogenicity of hyperglycemia on neural tube defects and antagonistic effect of taurine
Dongwei MAO ; Yiping ZHAO ; Shourou LI ; Jianhua CHE ; Wenhua TAN
Chinese Journal of Obstetrics and Gynecology 2001;0(03):-
ObjectiveTo explore the molecular mechanism of neural tube defects (NTDs) caused by hyperglycemia and thiadiazole and the antagonistic effect of taurine MethodsThe pregnant mice were divided into hyperglycemia groups, thiadiazole group,taurine groups and control groups The mRNA and the protein of Pax3 or Cx43 gene were detected respectively by reverse transcription-polymerase chain reaction assay and immunohistochemical method ResultsAs compared with mice treated by thiadiazole-stomach-perfusing, NTDs were significantly increased from mice treated with glucose-injection when blood glucose levels were ≥ 13 4 mmol/L Elevated glucose and thiadiazole could cause changes in Pax3 and Cx43 expression Hyperglycemia had stronger developmental toxicity on mice embryos Expression of Pax3 (mRNA 0 97?0 20, protein 0 11?0 02) in hyperglycemia group was significantly decreased, while expression of Cx43 (mRNA 7 05?1 63, protein 0 94?0 05) was significantly increased, and the relationship of dose-effect was demonstrated In the thiadiazole group, the expression of Cx43 (mRNA 6 96?0 73, protein 0 92?0 12) was significantly stronger than control groups, but there were no significant differences in expression of Pax3 between thiadiazole and its control groups Both of their teratogenicity could be antagonized by taurine ConclusionsThis study suggests that congenital malformation associated with diabetic pregnancy is caused by disruption of regulatory genes,Pax3 and Cx43 expression in embryo in response to elevated glucose Thiadiazole can only disturb the regulation of Cx43 gene causing NTDs Taurine can correct the disruption caused by the two teratogens
3.Study on MTHFR gene and ACE gene polymorphisms in pregnancy-induced hypertension
Dongwei MAO ; Keshen LI ; Yixuan ZHAO ; Al ET
Chinese Journal of Perinatal Medicine 1998;0(01):-
Objective To investigate the methyenetetrahydrofolate (MTHFR) gene and angiotensin convertion enzyme (ACE) gene polymorphisms in pregnancy induced hypertension(PIH). Methods The MTHFR and ACE gene genotypes were determined in 62 pregnancy induced hypertension patients and 120 normal pregnant women by PCR RFLP. Results The frequencies of T allele(0.52) and the T/T genotype(27%) of MTHFR gene in PIH group were markedly higher than those in the control group(39% and 15% P
4.Overexpression of CLN3 gene in human ovarian carcinoma
Dongwei MAO ; Yiping ZHAO ; Keshen LI ; Xiaoming WANG
Chinese Journal of Pathophysiology 1999;0(09):-
AIM: To determine whether overexpression of CLN3 is involved in the tumorigenesis of ovarian cacinoma. METHODS: 10 specimens of ovarian carcinoma were screened for CLN3 gene expression level by semiquantitative RT-PCR and Western blotting. RESULTS: Overexpression of CLN3 mRNA and protein was found in all ovarian tumor tissues as compared with normal tissues. CONCLUSION: The overexpression of CLN3 may contribute to tumor development of ovarian cancer.
5.The analysis of results of low-dose chest CT of coal miners with over 20-year exposure
Jiangang LI ; Xinhui CHEN ; Xia QIN ; Xiaogang JING ; Dongwei MAO ; Baoqiong ZHAO ; Guizhi WANG
Journal of Practical Radiology 2018;34(5):670-672,680
Objective To evaluate the application value of low-dose CT (LDCT) in physical examination for coal miners with different exposure time.Methods The consecutive three-year imaging data of 972 coal miners with over 20-year exposure were retrospectively reviewed.All miners were divided into 3 groups according to different exposure time,including 317 cases with less than 10 years,299 cases with 10-20 years and 356 cases with more than 20 years.All subjects underwent LDCT examination every year during three consecutive years.Results Baseline LDCT:As the exposure time was prolonged (with less than 10 years,10-20 years and more than 20 years),the number of coal miners has increased with non-calcified pulmonary nodules,interstitial pulmonary lesions,clinically cured or stable stage of pulmonary tuberculosis,pulmonary calcification and pulmonary fibrous stripes,but without statistically significant difference.The detection rates of lung bullae,aorta and coronary artery sclerosis were also increased mildly,with the prolonged exposure time.There was no significant correlation between exposure time and detection rates of bronchiectasis,pulmonary inflammatory lesions,lymph node enlargement or calcification,pleural lesions.The exposure time of 6 cases of malignant nodules and 2 cases of active tuberculosis was more than 10 years.During a two-year follow-up using LDCT scan,there were no significant changes in most of intrapulmonary,pleural and mediastinal lesions.Neither were in pulmonary nodules less than or equal to 4 mm.Three pulmonary nodules with 4-8 mm diameters were enlarged.Most of the inflammatory lesions have changed in size.Conclusion The LDCT scan has a certain value for chest physical examination of the coal miners with different exposure time.It is very necessary to screen the high-risk population of coal miners with exposure time of more than 10 years using LDCT.LDCT reexamination has significant value for pulmonary nodules and inflammatory lesions with diameter of more than 4 mm.Most of intrapulmonary,pleural and mediastinal lesions have no obvious change in the short term,and make an annual reexamination unnecessary,neither does a negative baseline LDCT.
6. Clinical significance of low-dose CT performed for three consecutive years in diagnosis of lung nodules in coal mine workers with 20 working years
Jiangang LI ; Xinhui CHEN ; Hao GE ; Xia QIN ; Xiaogang JING ; Guzhi WANG ; Dongwei MAO ; Guangyi ZHUANG ; Baoqiong ZHAO
Chinese Journal of Industrial Hygiene and Occupational Diseases 2017;35(9):679-682
Objective:
To investigate the clinical significance of low
7.Risk factors for death and their predictive value on diabetic kidney disease patients in intensive care unit based on MIMIC-Ⅲ database
Shaolei ZHANG ; Rongqing SUN ; Zhengrong MAO ; Hongfu YANG ; Dongwei LIU ; Zhangsuo LIU
Chinese Critical Care Medicine 2020;32(9):1085-1090
Objective:To analyze the influencing factors of prognosis of patients with diabetic kidney disease (DKD) in intensive care unit (ICU), and analyze their predictive value.Methods:Based on the inpatient information of more than 50 000 patients from June 2001 to October 2012 in the latest version of American Intensive Care Medical Information Database (MIMIC-Ⅲ v1.4), the data of DKD patients were screened out, including gender, age, body weight, comorbidities [hypertension, coronary heart disease, chronic obstructive pulmonary disease (COPD), chronic kidney disease (CKD)], sequential organ failure assessment (SOFA) score, the length of ICU stay, the incidence of mechanical ventilation, vasoactive drugs and renal replacement therapy during the ICU hospitalization, complications of other diseases [ventilator-associated pneumonia (VAP), urinary tract infection (UTI), diabetic ketoacidosis (DKA), acute myocardial infarction (AKI)] and prognosis of ICU. At the same time, the blood routine and biochemical data of the first 24 hours in ICU and the extremum values during the ICU hospitalization were collected. Multivariate Logistic regression analysis was used to screen the prognostic factors of DKD patients in ICU, and receiver operating characteristic (ROC) curve was plotted to analyze the predictive value of death risk factors.Results:416 DKD patients were screened out, 20 patients were excluded due to data missing, and finally 396 patients were enrolled, including 220 survival patients and 176 dead patients. Compared with the survival group, the patients in the death group were older (years old: 57.13±13.04 vs. 52.61±14.15), with lower rates of hypertension and CKD (11.4% vs. 23.6%, 26.7% vs. 41.4%), higher SOFA scores and baseline values of blood urea nitrogen (BUN), serum creatinine (SCr) and blood K + [SOFA score: 5.86±2.79 vs. 4.49±2.56, BUN (mmol/L): 18.4±10.0 vs. 14.8±9.0, SCr (μmol/L): 387.2±382.8 vs. 284.6±244.9, K + (mmol/L): 4.64±0.99 vs. 4.33±0.86], and longer ICU stay [days: 2.65 (1.48, 5.21) vs. 2.00 (1.00, 4.00)], and the differences were statistically significant (all P < 0.01). Further analysis of laboratory tests extremum values during ICU hospitalization showed that the maximum (max) and minimum (min) values of white blood cell (WBC), BUN and SCr, and K +max in the death group were significantly higher than those in the survival group [WBC max (×10 9/L): 17.3±10.3 vs. 14.5±7.3, WBC min (×10 9/L): 7.9±4.1 vs. 6.7±2.7, BUN max (mmol/L): 23.8±10.4 vs. 18.8±10.2, BUN min (mmol/L): 11.0±6.6 vs. 9.3±6.6, SCr max (μmol/L): 459.7±392.5 vs. 350.1±294.4, SCr min (μmol/L): 246.6±180.3 vs. 206.9±195.4, K +max (mmol/L): 5.35±0.93 vs. 5.09±0.99], and the minimum values of hemoglobin (Hb min) and glucose (Glu min) were significantly lower than those in the survival group [Hb min (g/L): 87.4±14.5 vs. 90.6±16.5, Glu min (mmol/L): 4.0±1.7 vs. 4.6±2.0], and the differences were statistically significant (all P < 0.05). The incidences of mechanical ventilation and vasoactive drugs during ICU hospitalization in the death group were significantly higher than those in the survival group (37.5% vs. 24.1%, 32.4% vs. 20.0%, both P < 0.01), and the incidences of UTI and AMI in the death group were significantly higher than those in the survival group (29.5% vs. 19.1%, 8.5% vs. 3.6%, both P < 0.05). Multivariate Logistic regression analysis showed that age [odds ratio ( OR) = 1.019, 95% confidence interval (95% CI) was 1.003-1.036, P = 0.023], SOFA score ( OR = 1.142, 95% CI was 1.105-1.246, P = 0.003), WBC min ( OR = 1.134, 95% CI was 1.054-1.221, P = 0.001) and BUN max ( OR = 1.010, 95% CI was 1.002-1.018, P = 0.018) were risk factors of death of DKD patients in ICU. ROC curve analysis showed that the area under ROC curve (AUC) of combination of risks factors of death was 0.706, the sensitivity was 61.6%, and the specificity was 73.2%. Conclusions:In order to prevent DKD patients from getting worse in ICU, we should pay close attention to the blood biochemical indexes, especially the renal function indexes, and give timely treatment. At the same time, we should actively prevent the occurrence of complications such as infection and cardiovascular disease.