scholarly journals Unique Phenotypes of Endothelial Cells in Developing Arteries: A Lesson from the Ductus Arteriosus

Author(s):  
Norika Mengchia Liu ◽  
Susumu Minamisawa
2017 ◽  
Vol 28 (3) ◽  
pp. 432-437 ◽  
Author(s):  
Hannes Sallmon ◽  
Sandra Akanbi ◽  
Sven C. Weber ◽  
Alexander Gratopp ◽  
Cornelia Rheinländer ◽  
...  

AbstractBackgroundCyclooxygenase inhibitors are widely applied to facilitate ductal closure in preterm infants. The mechanisms that lead to patent ductus arteriosus closure are incompletely understood. Vascular endothelial growth factor plays pivotal roles during ductal closure and remodelling.AimThe aim of this study was to investigate the effects of ibuprofen and indomethacin on the expression of vascular endothelial growth factor and its receptors in a primary rat ductus arteriosus endothelial cell culture.MethodsProtein expression of vascular endothelial growth factor and vascular endothelial growth factor receptor 1 and 2 was confirmed in rat ductus arteriosus and aorta by immunofluorescence staining. Fetal rat endothelial cells were isolated from ductus arteriosus and aorta using immunomagnetic cell sorting and treated with ibuprofen or indomethacin. mRNA expression levels were assessed by quantitative polymerase chain reaction analysis.ResultsIn ductal endothelial cells, ibuprofen significantly induced vascular endothelial growth factor and its receptor 2, but not receptor 1, whereas indomethacin did not alter the expression levels of the vascular endothelial growth factor system. In contrast, ibuprofen significantly induced vascular endothelial growth factor and its receptors 1 and 2 in aortic endothelial cells, whereas indomethacin only induced vascular endothelial growth factor receptor 2.ConclusionOur results indicate differential effects of ibuprofen and indomethacin on the expression levels of the vascular endothelial growth factor system in ductus arteriosus endothelial cells. In addition, vessel-specific differences between ductal and aortic endothelial cells were found. Further in vivo studies are needed to elucidate the biological significance of these findings.


PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
Author(s):  
Norika Mengchia Liu ◽  
Tomohiro Yokota ◽  
Shun Maekawa ◽  
Ping Lü ◽  
Inbun Tei ◽  
...  

2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Norika Liu ◽  
Tomohiro Yokota ◽  
Shun Maekawa ◽  
Utako Yokoyama ◽  
Takashi Kato ◽  
...  

2018 ◽  
Vol 234 (5) ◽  
pp. 6842-6853 ◽  
Author(s):  
Hai-Tao Hou ◽  
Xi-Zhang ◽  
Jun Wang ◽  
Li-Xin Liu ◽  
Jian-Feng Zhang ◽  
...  

2022 ◽  
Vol 1 (1) ◽  
pp. 67-84
Author(s):  
Gloria E. Hernandez ◽  
Feiyang Ma ◽  
Guadalupe Martinez ◽  
Nadia B. Firozabadi ◽  
Jocelynda Salvador ◽  
...  

AbstractLeukocytes and endothelial cells frequently cooperate to resolve inflammatory events. In most cases, these interactions are transient in nature and triggered by immunological insults. Here, we report that, in areas of disturbed blood flow, aortic endothelial cells permanently and intimately associate with a population of specialized macrophages. These macrophages are recruited at birth from the closing ductus arteriosus and share the luminal surface with the endothelium, becoming interwoven in the tunica intima. Anatomical changes that affect hemodynamics, such as in patent ductus arteriosus, alter macrophage seeding to coincide with regions of disturbed flow. Aortic resident macrophages expand in situ via direct cell renewal. Induced depletion of intimal macrophages leads to thrombin-mediated endothelial cell contraction, progressive fibrin accumulation and formation of microthrombi that, once dislodged, cause blockade of vessels in several organs. Together the findings reveal that intravascular resident macrophages are essential to regulate thrombin activity and clear fibrin deposits in regions of disturbed blood flow.


PLoS ONE ◽  
2013 ◽  
Vol 8 (9) ◽  
pp. e73685 ◽  
Author(s):  
Norika Mengchia Liu ◽  
Tomohiro Yokota ◽  
Shun Maekawa ◽  
Ping Lü ◽  
Inbun Tei ◽  
...  

2011 ◽  
Vol 70 (3) ◽  
pp. 236-241 ◽  
Author(s):  
Sven C Weber ◽  
Alexander Gratopp ◽  
Sandra Akanbi ◽  
Cornelia Rheinlaender ◽  
Hannes Sallmon ◽  
...  

Author(s):  
D. E. Philpott ◽  
A. Takahashi

Two month, eight month and two year old rats were treated with 10 or 20 mg/kg of E. Coli endotoxin I. P. The eight month old rats proved most resistant to the endotoxin. During fixation the aorta, carotid artery, basil arartery of the brain, coronary vessels of the heart, inner surfaces of the heart chambers, heart and skeletal muscle, lung, liver, kidney, spleen, brain, retina, trachae, intestine, salivary gland, adrenal gland and gingiva were treated with ruthenium red or alcian blue to preserve the mucopolysaccharide (MPS) coating. Five, 8 and 24 hrs of endotoxin treatment produced increasingly marked capillary damage, disappearance of the MPS coating, edema, destruction of endothelial cells and damage to the basement membrane in the liver, kidney and lung.


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