Objective To evaluate the effect of probe melting curve analysis and gene chips on detecting drug resistance of Mycobacterium tuberculosis against isoniazid and rifampicin. Methods Drug resistance was detected by gene chip and probe melting curve analysis in 46 cases of patients with sputum smear positive specimens, with L-J culture as the gold standard. Results In all the 46 cases, the detection of drug resistance genes against isoniazid was performed by probe melting curve analysis and gene chips, achieving the coincidences of 91.3% and 80.43% with those by L-J culture, respectively. The detection of drug resistance genes in 38 cases administered with rifampicin was conducted as well by the two techniques, achieving the coincidences of 84%and 89.4% with those by L-J culture. There were no significant differences between the two methods (P > 0.05). Conclusion The gene chip direct detection and probe melting curve analysis are of high value in diagnosis of tuberculosis, and they can be regarded as a diagnosis method of choice for tuberculosis. Both have the priorities of timesaving, high sensitivity and specificity.

Objective To investigate the relationship between baseline serum uric acid and the severity of coronary artery disease ( CAD ) in the first-degree relatives or non-first-degree relatives of men with type 2 diabetes. Methods Three hundred and eighty-one men with negative coronary angiography for the first time were divided into diabetes and non-diabetes groups and followed-up for 5 years. The primary outcome was acute coronary syndrome suspected during subsequent 5 years, and the coronary angiography was conducted simultaneously. The severity of CAD was assessed by the coronary stenosis index ( CSI) and the number of coronary lesion vessels. Results In normal blood glucose group, serum uric acid was higher in the first-degree relatives of diabetics compared with non-first-degree relatives(P<0. 01), along with higher morbidity of CAD, CSI, and coronary lesion vessels (all P<0.01). Correlation analysis showed that CSI(r=0. 250, P=0. 041) and coronary lesion vessels(r=0. 252, P=0. 040) in non-diabetics group were associated with baseline levels of serum uric acid. Conclusion The elevation of serum uric acid was closely related to subsequent CAD, especially in first-degree relatives of male with type 2 diabetes, which could be used as an early indicator for CAD prediction.

Aged ; Humans ; Hyponatremia ; diagnosis ; Inappropriate ADH Syndrome ; diagnosis ; Lung Neoplasms ; diagnosis