Destruction of cultured vascular endothelial cells and red blood cells by immune-activated polymorphonuclear leukocytes

Inflammation ◽  
1987 ◽  
Vol 11 (2) ◽  
pp. 201-210 ◽  
Author(s):  
Yoshimi Hashimoto ◽  
Kiyoaki Tanimoto ◽  
Sadayoshi Yoshinoya ◽  
Terumasa Miyamoto
2012 ◽  
Vol 84 (2) ◽  
pp. 555-572 ◽  
Author(s):  
Laura N. Cruz ◽  
Yang Wu ◽  
Alister G. Craig ◽  
Célia R.S. Garcia

Malaria is responsible for more than 1.5 million deaths each year, especially among children (Snow et al. 2005). Despite of the severity of malaria situation and great effort to the development of new drug targets (Yuan et al. 2011) there is still a relative low investment toward antimalarial drugs. Briefly there are targets classes of antimalarial drugs currently being tested including: kinases, proteases, ion channel of GPCR, nuclear receptor, among others (Gamo et al. 2010). Here we review malaria signal transduction pathways in Red Blood Cells (RBC) as well as infected RBCs and endothelial cells interactions, namely cytoadherence. The last process is thought to play an important role in the pathogenesis of severe malaria. The molecules displayed on the surface of both infected erythrocytes (IE) and vascular endothelial cells (EC) exert themselves as important mediators in cytoadherence, in that they not only induce structural and metabolic changes on both sides, but also trigger multiple signal transduction processes, leading to alteration of gene expression, with the balance between positive and negative regulation determining endothelial pathology during a malaria infection.


Transfusion ◽  
2009 ◽  
Vol 49 (10) ◽  
pp. 2136-2143 ◽  
Author(s):  
Alexander Koshkaryev ◽  
Orly Zelig ◽  
Noga Manny ◽  
Saul Yedgar ◽  
Gregory Barshtein

PLoS ONE ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. e0174237 ◽  
Author(s):  
Ayaka Ohashi ◽  
Aya Murata ◽  
Yuichiro Cho ◽  
Shizuko Ichinose ◽  
Yuriko Sakamaki ◽  
...  

2019 ◽  
Author(s):  
Ryohichi Sugimura ◽  
Ryo Ohta ◽  
Chihiro Mori ◽  
Emi Sano ◽  
Tatsuki Sugiyama ◽  
...  

AbstractErythropoiesis is regulated by microenvironmental factors from the vasculature. Enhanced erythropoiesis, which occurs under stress or during development, amplifies erythroid cells to meet the demand of red blood cells. This process uncouples cell division and differentiation, thus the accumulated erythroid cells remain undifferentiated in the vasculature. However, little is known about how vascular endothelial cells (ECs) regulate erythropoiesis. Here we identified that human umbilical vein endothelial cells (HUVECs) keep erythroid cells undifferentiated and amplify their number. We determined that HUVECs amplify erythroid cells via secreted angiocrine factors. The expression profile of these factors suggested that they resemble macrophage-crines for enhanced erythropoiesis. Molecularly, HUVECs mediate the activation of ERK signaling. These data indicate that angiocrine factors from HUVECs enhance erythropoiesis via the amplification of undifferentiated erythroid cells. Our study contributes to the ultimate goal of harnessing erythropoiesis to replace blood transfusions.


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