Objective To investigate the correlation between plasma brain natriuretic peptide (BNP) ,central aortic systolic pres-sure with the degree of coronary artery lesion .Methods One hundred and fifty patients with coronary artery disease ,positive coro-nary angiographic results and without heart failure in the cardiological department of this hospital from March to June 2011 were selected and divided into the hypertension group (n=90) and the non-hypertension group(n=60) according to the blood pressure . The plasma BNP before angiography was detected by ELISA .The coronary lesion vessels and clinical scores were assessed after an-giography .The central aortic pressure before angiography was measured by the noninvasive measurement method and the diastolic blood pressure(DBP) ,systolic blood pressure(SBP) and pulse pressure(PP)were recorded .The correlation between PP and BNP was analyzed by Logistic regression .Results The plasma BNP concentration in the hypertension group was significantly higher than that in the non-hypertension group(P<0 .05) .The SBP level in 2 vessels ,3 vessels was significantly higher than that in the momal coronary group(P<0 .05) ,the PP in 3 vessels was significantly higher than that in the momal coronary group (P<0 .05) . The BNP level in 3 vessels ,2 vessels and single vessel of coronary artery lesion was significantly higher than that in the normal cor-onary artery group(P<0 .05) .The Logistic regression analysis on the PP influencing factors found that PP was closely related with the number of coronary artery lesion vessels ,lesion score ,LVEF and BNP ;the multiple correlation coefficient between PP with the number of coronary artery lesion vessels ,lesion score and BPN was 0 .91 ,its linear model was PP=0 .543 lesion vessels number +0 .656 lesion score + 0 .864 BNP .Conclusion PP of the central aortic pressure is a risk factor for the development and progress of coronary artery stenosis occurrence .BNP may be used as a plasma marker of the degree of coronary artery stenosis .

OBJECTIVETo study the genetic diversity of HIV-1 nef genes from a patient with AIDS dementia complex(ADC) , so as to research the amino acid variability and the pathogenesis of ADC.

METHODSThe nef gene was amplified with PCR from genomic DNA which was extracted from spleen and different brain tissues(basal ganglia, frontal gray matter, meninges, temporal lobe)of a patient who died of ADC. PCR products were cloned into the pMD19-T vector, after transformation and selection by ampicillin and blue/white spotting. Five of positive clones were sequenced and confirmed with BLAST. HIV-1 nef sequences were processed with BioEdit and MEGA4 to do Neighbor-Joining tree, p-Distances, and values of ds/dn.

RESULTSThe samples were all identified as HIV-1 B and genetic variation exists in HIV-1 nef gene isolated from different tissues compared with HXB2. In addition,part of the changes were different between periphery and brain.

CONCLUSIONVariations exist in the HIV-1 nef gene extracted from the ADC patient and the variations from peripheral and central nerve tissues were different,these variations may change the function of Nef,and it needs more research.

AIDS Dementia Complex ; virology ; Adult ; DNA, Viral ; genetics ; Genetic Variation ; HIV Infections ; virology ; HIV-1 ; genetics ; Humans ; Male ; nef Gene Products, Human Immunodeficiency Virus ; genetics