A Clinical Study of Ambulatory Blood Pressure Monitoring in the Advanced Age Patients with Hypertensive Pregnancy / 昆明医科大学学报

Objective To study the characteristics of ambulatory blood pressure in advanced age patients with hypertension during pregnancy and its effect on pregnancy outcome, and to explore the clinical significance of ambulatory blood pressure monitoring in advanced age women with hypertension.Methods A retrospective analysis from January 2016 to August 2017, in patients with pregnancy induced hypertension in the Second Affiliated Hospital of Kunming Medical University of production inspection and delivery in hospital as the research object, according to the age of pregnant women, they were divided into the advanced age group (35 years of age or older, n=100), and age group (age ＜35, n=100). All the pregnant women underwent 24-hour ambulatory blood pressure examination in the middle and third trimester of pregnancy to compare the difference of ambulatory blood pressure parameters between the two groups and the relationship between them and the adverse outcome of pregnancy. Results Systolic pressure index of the advanced age group 24 hours average systolic pressure, day mean systolic pressure, night mean systolic pressure, day systolic pressure load value, night systolic pressure load value were higher than the age group, the differences were statistically significant (P＜0.05); The incidences of cesarean section and premature infant were higher than thase in the age group, and the differences were was statistically significant (P＜0.05). The average diastolic blood pressure andthe day systolic load were correlated with fetal growth restriction in both the aged and age groups, and the24-hour mean diastolic blood pressure was associated with preterm infants. Conclusions Ambulatory blood pressure monitoring has a positive significance in the diagnosis, evaluation and reduction of adverse pregnancy outcomes in the advanced age patients with hypertensive pregnancy, and can be used as prenatal routine examination for the advanced age pregnant women.

Mitogen-activated protein kinase signal pathways play an important role in right ventricular hypertrophy of tetralogy of Fallot / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Tetralogy of Fallot (TOF) is the most common malformation of children with an incidence of approximately 10% of congenital heart disease patients. There can be a wide spectrum to the severity of the anatomic defects, which include ventricular septal defect, aortic override, right ventricular outflow tract obstruction, and right ventricular hypertrophy. We examined the relationship between right ventricular hypertrophy in patients with TOF and the gene expression of factors in the mitogen-activated protein kinase (MAPK) signal pathway.</p><p><b>METHODS</b>To gain insight into the characteristic gene(s) involved in molecular mechanisms of right ventricular hypertrophy in TOF, differential mRNA and micro RNA expression profiles were assessed using expression-based micro array technology on right ventricular biopsies from young TOF patients who underwent primary correction and on normal heart tissue. We then analyzed the gene expression of the MAPK signal pathway using reverse transcription-polymerase chain reaction (RT-PCR) in normals and TOF patients.</p><p><b>RESULTS</b>Using the micro RNA chip V3.0 and human whole genome oligonucleotide microarray V1.0 to detect the gene expression, we found 1068 genes showing altered expression of at least two-fold in TOF patients compared to the normal hearts, and 47 micro RNAs that showed a significant difference of at least two-fold in TOF patients. We then analyzed these mRNAs and micro RNAs by target gene predicting software Microcosm Targets version 5.0, and determined those mRNA highly relevant to the right ventricular hypertrophy by RT-PCR method. There were obvious differences in the gene expression of factors in the MAPK signal pathway when using RT-PCR, which was consistent to the results of the cDNA microarray.</p><p><b>CONCLUSION</b>The upregulation of genes in the MAPK signal pathway may be the key events that contribute to right ventricular hypertrophy and stunted angiogenesis in patients with TOF.</p>

Culture in vitro and lentivirus transfection of rat mesenchymal stem cells / 中国实验血液学杂志

This study was purposed to establish the methods for isolation, culture, identification and labeling of bone marrow mesenchymal stem cells (BMMSC), so as to provide quantified seed cells for cell transplantation. Bone marrow was collected from SD rat by flushing femur and tibias under sterile condition and BMMSC were purified by adherent culture and amplified in vitro. The immunophenotypes of BMMSC were identified by flow cytometry, the ability of differentiation to osteogenic and adipogenic lineages was detected by alizarin red and oil red O respectively. The BMMSC were transfected by using lentivirus with green fluorescence protein (GFP) gene so as to determine GFP expression in BMMSC. The results demonstrated that the method of adherent culture could effectively isolate and purify rat BMMSC which displayed homogenous fibro-like morphology. The flow cytometry showed that BMMSC expressed CD29, CD44, not expressed CD34, CD45. The BMMSC could differentiated into osteoblasts and adipocytes two mesenchymal lineages when grown in specific medium for each lineage. After being transfected by lentivirus, BMMSC could express GFP. It is concluded that the adherent culture is simple, effective, feasible method to separate MSC from the bone marrow of adult rats; the separated and cultured cells exhibit the biological characteristics of BMMSC and differentiating potential. BMMSC can express GFP efficiently and stably in vitro after being transfected by lentivirus, which can be used to label cells for tracing in vivo.