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Ang 2 AND Sirt3

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https://www.readbyqxmd.com/read/27128560/ablation-of-sirt3-causes-coronary-microvascular-dysfunction-and-impairs-cardiac-recovery-post-myocardial-ischemia
#1
Xiaochen He, Heng Zeng, Jian-Xiong Chen
RATIONALE: Sirtuin (SIRT3), a major nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylase in mitochondria, declines with aging and its ablation is associated with accelerated development of cardiovascular diseases. However, the role of SIRT3 in coronary microvascular function and post-MI recovery has not been completely understood. OBJECTIVE: The goal was to investigate whether ablation of SIRT3 causes coronary microvascular dysfunction, exacerbates post-myocardial ischemia (MI) cardiac dysfunction and impairs cardiac recovery...
July 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/26868537/lps-causes-pericyte-loss-and-microvascular-dysfunction-via-disruption-of-sirt3-angiopoietins-tie-2-and-hif-2%C3%AE-notch3-pathways
#2
Heng Zeng, Xiaochen He, Qin-Hui Tuo, Duan-Fang Liao, Guo-Qiang Zhang, Jian-Xiong Chen
Recent studies reveal a crucial role of pericyte loss in sepsis-associated microvascular dysfunction. Sirtuin 3 (SIRT3) mediates histone protein post-translational modification related to aging and ischemic disease. This study investigated the involvement of SIRT3 in LPS-induced pericyte loss and microvascular dysfunction. Mice were exposed to LPS, expression of Sirt3, HIF-2α, Notch3 and angiopoietins/Tie-2, pericyte/endothelial (EC) coverage and vascular permeability were assessed. Mice treated with LPS significantly reduced the expression of SIRT3, HIF-2α and Notch3 in the lung...
2016: Scientific Reports
https://www.readbyqxmd.com/read/24363305/apelin-gene-therapy-increases-myocardial-vascular-density-and-ameliorates-diabetic-cardiomyopathy-via-upregulation-of-sirtuin-3
#3
Heng Zeng, Xiaochen He, Xuwei Hou, Lanfang Li, Jian-Xiong Chen
Microvascular insufficiency contributes to cardiac hypertrophy and worsens heart dysfunction in diabetic cardiomyopathy. Our recent study shows that apelin may protect ischemic heart failure via upregulation of sirtuin 3 (Sirt3) and angiogenesis. This study investigated whether apelin promotes angiogenesis and ameliorates diabetic cardiomyopathy via activation of Sirt3. Wild-type (WT) and diabetic db/db mice were administrated with adenovirus-apelin to overexpressing apelin. In WT mice, overexpression of apelin increased Sirt3, VEGF/VEGFR2, and angiopoietin-1 (Ang-1)/Tie-2 expression in the heart...
February 15, 2014: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/24039710/myocardial-injection-of-apelin-overexpressing-bone-marrow-cells-improves-cardiac-repair-via-upregulation-of-sirt3-after-myocardial-infarction
#4
Lanfang Li, Heng Zeng, Xuwei Hou, Xiaochen He, Jian-Xiong Chen
Our previous study shows that treatment with apelin increases bone marrow cells (BMCs) recruitment and promotes cardiac repair after myocardial infarction (MI). The objective of this study was to investigate whether overexpression of apelin in BMCs improved cell therapy and accelerated cardiac repair and functional recovery in post-MI mice. Mouse myocardial infarction was achieved by coronary artery ligation and BMCs overexpressing apelin (apelin-BMCs) or GFP (GFP-BMCs) were injected into ischemic area immediately after surgery...
2013: PloS One
https://www.readbyqxmd.com/read/18547592/adipose-tissue-gene-expression-profiles-in-ob-ob-mice-treated-with-leptin
#5
Wei Zhang, Mary Anne Della-Fera, Diane L Hartzell, Dorothy Hausman, Clifton A Baile
Leptin plays a critical role in regulating body weight, lipid metabolism, apoptosis and microvasculature of adipose tissue. To explore multiple signaling pathways of leptin action on adipose tissue, real-time PCR utilizing TaqMan low-density arrays was performed to compare mRNA expression in adipose tissue of ob/ob mice treated with vehicle or leptin (2.5 microg/d or 10 microg/d) for 14 days via subcutaneous osmotic minipumps. Of the 24 target genes selected for characterization, many were differentially expressed between control ob/ob mice and leptin-treated ob/ob mice...
July 4, 2008: Life Sciences
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