Association of Estimated Glucose Disposal Rate With the Stenosis Severity of Coronary Artery Disease： A Cross-sectional Study / 中山大学学报(医学科学版)

ObjectiveTo investigate the association between estimated glucose disposal rate （eGDR） and the severity of coronary heart disease. MethodsWe conducted a hospital-based cross-sectional study that included 1258 patients （mean age： 62（53-68） years） who underwent coronary angiography for suspected coronary artery disease （53.9% were male）. Insulin resistance level （IR） was calculated according to eGDR formula： eGDR = 21.158 - （0.09 × WC） - （3.407 × hypertension） - （0.551 × HbA1c） ［hypertension （yes = 1 / no = 0）， HbA1c = HbA1c （%）］. Subjects were grouped according to the eGDR quantile. CAD severity was determined by the number of narrowed vessels： no-obstructive CAD group （all coronary stenosis were<50%， n=704）， Single-vessel CAD group （only one involved major coronary artery stenosis≥50%， n=205）， Multi-vessel CAD group （two or more involved major coronary arteries stenosis≥50%， n=349）； Multivariate logistic regression model was used to analyze the association between eGDR and CAD severity. The linear relationship between eGDR and CAD in the whole range of eGDR was analyzed using restricted cubic spline. Subgroup analyses were used to assess the association between eGDR and CAD severity in different diabetic states. Receiver operating characteristic （ROC） curve analysis were used to evaluate the value of eGDR in improving CAD recognition. ResultsA decrease in the eGDR index was significantly associated with an increased risk of CAD severity （OR： 2.79； 95%CI： 1.72~4.55； P<0.001）. In multivariate logistic regression models， individuals with the lowest quantile of eGDR （T1） were 2.79 times more likely to develop multi-vessel CAD than those with the highest quantile of eGDR （T3） （OR： 2.79； 95%CI： 1.72~4.55； P<0.001）. Multivariate restricted cubic spline analysis showed that eGDR was negatively associated with CAD and multi-vessel CAD （P-nonlinear>0.05）. In non-diabetic patients， compared with the reference group （T3）， the T1 group had a significantly increased risk of CAD （OR： 1.42； 95% CI： 1.00~2.01； P<0.05） and multi-vessel CAD （OR： 1.86； 95%CI： 1.21~2.86； P<0.05）. No statistical association was found between eGDR and CAD in diabetic patients. In ROC curve analysis， when eGDR was added to traditional model for CAD， significant improvements were observed in the model's recognition of CAD and multi-vessel CAD. ConclusionOur study shows eGDR levels are inversely associated with CAD and CAD severity. eGDR， as a non-insulin measure to assess IR， could be a valuable indicator of CAD severity for population.

Effect of Inhibiting NCL Expression on Drug-Resistance of Chronic Myeloid Leukemia Cell Line K562 and Its Resistant Cells / 中国实验血液学杂志

OBJECTIVE@#To construct a K562 and adriamycin-resistant K562 (KAR) cell line with stably down-regulation of NCL (nucleolin) expression, and to investigate the effect of NCL down-regulation on the drug resistance in K562 and KAR cells.@*METHODS@#K562 and KAR cells were infected with lentivirus, and stably transfected cell clones were obtained by puromycin screening. The cell proliferation was detected by MTS assay, the cell apoptosis was detected by flow cytometry, and the expression level of drug resistance related genes was detected by real-time PCR.@*RESULTS@#The K562 and KAR cells with stable down-regulation of NCL were successfully constructed. Compared with the control group, the proliferation of K562 and KAR cells with down-regulating NCL expression decreased significantly (P ＜0.05), the apoptosis of cells increased significantly (P ＜0.05), and cell resistance to adriamycin was down-regulated.@*CONCLUSION@#Inhibition of NCL expression may increase the sensitivity of cells to adriamycin, which may be related with the promotion of apoptosis of K562 and KAR cells.

Lab-on-chip for the detection of food borne pathogenic bacteria / 上海预防医学

Objective To set up an onsite protocol for abrupt emergencies of public health e-vents, with both the sensitivity and accuracy of the lab-on-chip(microfluidic chip), for the detection of food borne pathogenic bacterium including Vibrio cholera , Salmonella , Vibrio parahaemolyticus and Shigellaare exanimated . [ Methods] By comparison of the results from the chips and fluorescence quantitative PCR were analyzed the specificity , sensitivity, accuracy and repeatability of the Lab-on-chip. [ Results] Acceptable specificity , accuracy and repeatability of the chips had been well achieved , the detection limit of the chips for the Vibrio cholera , Salmonella, Vibrio parahaemolyticus and Shigella was 5 ×103 ~103 DNA Copies/mL. [ Conclusion] Lab-on-chip is believed to be a fast , convenient , efficient tool with accept-able accuracy for public health emergencies .

Sinistral portal hypertension: clinical features and surgical treatment of chronic splenic vein occlusion

Sinistral, or left-sided, portal hypertension [SPH] is a rare cause of upper gastrointestinal hemorrhage. This retrospective analysis summarizes the clinical features of SPH and the results of surgical treatment. Between 2000 and 2009, patients from our hospital diagnosed with SPH were identified. Diagnosis of SPH was based on evidence of isolated splenic vein thrombosis, splenomegaly, gastroesophageal varices and exclusion of other causes of portal hypertension. Eight males and 5 females were included in the study, with a mean age of 43.5 +/- 6.4 years [range: 31-68 years]. Liver function was normal in all patients. Causes of SPH were chronic pancreatitis [n=7], pancreatic cancer [n=3], pancreatic cysts [n=2] and neuroendocrine tumor [n=1]. The main clinical manifestations were gastrointestinal hemorrhage in 7 cases [53.8%], upper abdominal pain in 10 [76.9%] and hypersplenism in 12 [92.3%]. All patients had splenomegaly and gastroesophageal varices. Twelve patients underwent splenectomy and 1 received surgical removal of a pancreatic cyst. No major gastrointestinal tract rebleed occurred after a mean follow-up of 46 months [ +/- 7 months]. Two patients died of pancreatic cancer and 1 of acute myocardial infarction during follow-up. SPH should be suspected in patients with upper gastrointestinal varices as well as unexplained splenomegaly with normal liver function. Surgical intervention such as splenectomy offers a good long-term outcome in symptomatic patients

Giant ulcerated basal cells carcinoma invading the eyeball, orbit and skull: a case report / 国际眼科杂志(Guoji Yanke Zazhi)

· Basal ceil carcinoma (BCC) is one of the most common human cancers. The giant ulcerated BCC invading the eyeball and orbit has been rarely reported. We present a case of giant BCC with cutaneous ulcer on the left head,invading the eyeball, orbit and skull.