Objective To investigate the role of plasma matrix metalloproteinase-9 (MMP-9) and nuclear factor kappa B (NF-κB) in the pathogenesis of obstructive sleep apnea hypopnea syndrome (OSAHS) complicated with hypertension.Methods The patients were selected in the respiratory medicine and neurology of our hospital from January 2014 to June 2014.Polysomnography(PSG) monitoring was employed to assess the patient.All patients were divided into 3 groups,including snoring group(23 cases),OSAHS group(32 cases),OSAHS with hypertension group(31 cases).And then according to the hypertension stage,OSAHS with hypertension group was divided into 3 groups,including OSAHS with stage 1 hypertension group(9 cases),OSAHS with stage 2 hypertension group(9 cases),OSAHS with stage 3 hypertension group(13 cases).The plasma MMP-9 was measured by ELISA.The mRNA expression levels of MMP-9 and NF-κB were detected by real-time quantitative PCR.Results The levels of MMP-9 and MMP-9 mRNA and NF-κB mRNA in OSAHS with hypertension group were significantly higher than those of snoring group and OSAHS group and the differences were statistically significant(P<0.05).The expression of MMP-9,the MMP-9 and NF-κB mRNA expression of monocytes in OSAHS with stage 3 hypertension group was significantly higher than those of OSAHS with stage 1 hypertension group and OSAHS with stage 2 hypertension group and the differences were statistically significant(P<0.05).The plasma MMP-9 was positively correlated with AHI and oxygen desaturation index and negatively correlated with LSaO2(P<0.05).The plasma MMP-9 was positively correlated with the MMP-9 mRNA expression(P<0.05).The MMP-9 mRNA expression was positively correlated with the NF-κB mRNA expression(P<0.05).Conclusion The plasma concentrations of MMP-9,the MMP-9 and NF-κB mRNA expression of monocytes in OSAHS with hypertension patients was significantly high,which is associated with disease severity and degree of hypoxia.The MMP-9 might play an important role in the pathogenesis of OSAHS with hypertension and be regulated by NF-κB pathway.

Objective To explore the association between genetic polymorphism of a disintegrin and metalloprotease 19 (ADAM19) and chronic obstructive pulmonary disease (COPD).Methods Totally 116 patients with COPD (the COPD group) and 82 healthy volunteers (the control group) were enrolled in this study.Fasting peripheral blood was taken and whole blood corpuscle genomic DNA was extracted.The genetic polymorphism of ADAM19 (rs1422795) was determined by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP).Results The difference in genotypes frequencies (GG,AG,AA) distribution of the ADAM19 between patients (73.3％,22.4％,and 4.3％) and controls (68.3％,28.0％,and 3.7％) showed no statistically significance (x2 =0.887,P=0.634).There were also no significant differences in the distribution of the different allele gene frequencies(A,G) between patients (84.5％,15.5％) and controls(82.3％,17.7％)(x2=0.582,P=0.446).No differences were found in the distribution of the genotypes between patients of different COPD severity classified according to FEV1 (％ pred),and healthy controls(x2=3.325,P=0.787).Conclusions ADAM19 (rs1422795) genetic polymorphism is not related to the development of COPD,which may not be the COPD-related gene.

OBJECTIVETo investigate the reliability of magnetic-activated cell sorting (MACS) combined with multiplex ligation-dependent probe amplification (MLPA) in the detection of the molecular cytogenetic abnormalities in multiple myeloma.

METHODSThe bone marrow cells were collected from 29 patients with multiple myeloma. The immuno magnetically sorted and unsorted cells were detected for TP53 and RB1 expressions using MLPA probes and the results were compared with fluorescent in situ hybridization (FISH).

RESULTSThe detection success rate was 100% for MLPA, which yielded results with an concordance rate of 99.1% with the FISH results. The positivity rates of MLPA and FISH were both increased after immunomagnetic sorting of the bone marrow cells.

CONCLUSIONMLPA can well suit the clinical needs for detecting molecular cytogenetic abnormalities in multiple myeloma, and the samples should be immuno magnetically sorted before the assay.

Adult ; Aged ; Aged, 80 and over ; Chromosome Aberrations ; Female ; Humans ; Immunomagnetic Separation ; In Situ Hybridization, Fluorescence ; Karyotyping ; Male ; Middle Aged ; Multiple Myeloma ; diagnosis ; genetics ; Multiplex Polymerase Chain Reaction