Comment on: Acute cytomegalovirus infection and venous thrombosis: Role of antiphospholipid antibodies

2007 ◽  
Vol 54 (5) ◽  
pp. 516-517
Author(s):  
Eyal Meltzer
Keyword(s):  
Venous Thrombosis ◽  
Antiphospholipid Antibodies ◽  
Cytomegalovirus Infection ◽  
Acute Cytomegalovirus

Acute cytomegalovirus infection and venous thrombosis: Role of antiphospholipid antibodies

2007 ◽  
Vol 54 (1) ◽  
pp. e47-e50 ◽  
Author(s):  
V. Delbos ◽  
P. Abgueguen ◽  
J.M. Chennebault ◽  
S. Fanello ◽  
E. Pichard
Keyword(s):  
Venous Thrombosis ◽  
Antiphospholipid Antibodies ◽  
Cytomegalovirus Infection ◽  
Acute Cytomegalovirus

scholarly journals Transient Antiphospholipid Syndrome Associated with Primary Cytomegalovirus Infection: A Case Report and Literature Review

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Tsuyoshi Nakayama ◽  
Mitsuteru Akahoshi ◽  
Kensuke Irino ◽  
Yasutaka Kimoto ◽  
Yojiro Arinobu ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Case Report ◽  
Literature Review ◽  
Antiphospholipid Antibodies ◽  
Cytomegalovirus Infection ◽  
Cmv Infection ◽  
Primary Cytomegalovirus Infection ◽  
First Time ◽  
Acute Cytomegalovirus

Viral infection is known to induce transient autoimmunity in humans. Acute cytomegalovirus (CMV) infection is implicated in occasional thrombosis formation. We here, for the first time, report a 19-year-old female who had an acute CMV infection, leading to a deep venous thrombosis and a pulmonary embolism along with transient appearance of lupus anticoagulant. The pathological role of antiphospholipid antibodies in CMV-mediated thrombosis is discussed.

Role of the 807 C/T Polymorphism of the α2 Gene in Platelet GP Ia Collagen Receptor Expression and Function

1999 ◽  
Vol 81 (06) ◽  
pp. 951-956 ◽  
Author(s):  
J. Corral ◽  
R. González-Conejero ◽  
J. Rivera ◽  
F. Ortuño ◽  
P. Aparicio ◽  
...  
Keyword(s):  
Venous Thrombosis ◽  
Cell Types ◽  
Receptor Expression ◽  
Case Control Studies ◽  
Platelet Surface ◽  
Vitro Analysis ◽  
And Function ◽  
In Vitro Analysis

SummaryThe variability of the platelet GP Ia/IIa density has been associated with the 807 C/T polymorphism (Phe 224) of the GP Ia gene in American Caucasian population. We have investigated the genotype and allelic frequencies of this polymorphism in Spanish Caucasians. The T allele was found in 35% of the 284 blood donors analyzed. We confirmed in 159 healthy subjects a significant association between the 807 C/T polymorphism and the platelet GP Ia density. The T allele correlated with high number of GP Ia molecules on platelet surface. In addition, we observed a similar association of this polymorphism with the expression of this protein in other blood cell types. The platelet responsiveness to collagen was determined by “in vitro” analysis of the platelet activation and aggregation response. We found no significant differences in these functional platelet parameters according to the 807 C/T genotype. Finally, results from 3 case/control studies involving 302 consecutive patients (101 with coronary heart disease, 104 with cerebrovascular disease and 97 with deep venous thrombosis) determined that the 807 C/T polymorphism of the GP Ia gene does not represent a risk factor for arterial or venous thrombosis.

scholarly journals Role of Tissue Factor in the Pathogenesis of COVID-19 and the Possible Ways to Inhibit It

2021 ◽  
Vol 27 ◽  
pp. 107602962110039
Author(s):  
Carlos A. Cañas ◽  
Felipe Cañas ◽  
Mario Bautista-Vargas ◽  
Fabio Bonilla-Abadía
Keyword(s):  
Tissue Factor ◽  
Proinflammatory Cytokines ◽  
Antiphospholipid Antibodies ◽  
Therapeutic Strategies ◽  
Prothrombotic State ◽  
Pulmonary Epithelium ◽  
Angiotensin Converting Enzyme 2 ◽  
Patients With Heart Failure ◽  
Inflammatory Effect

COVID-19 (Coronavirus Disease 2019) is a highly contagious infection and associated with high mortality rates, primarily in elderly; patients with heart failure; high blood pressure; diabetes mellitus; and those who are smokers. These conditions are associated to increase in the level of the pulmonary epithelium expression of angiotensin-converting enzyme 2 (ACE-2), which is a recognized receptor of the S protein of the causative agent SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2). Severe cases are manifested by parenchymal lung involvement with a significant inflammatory response and the development of microvascular thrombosis. Several factors have been involved in developing this prothrombotic state, including the inflammatory reaction itself with the participation of proinflammatory cytokines, endothelial dysfunction/endotheliitis, the presence of antiphospholipid antibodies, and possibly the tissue factor (TF) overexpression. ARS-Cov-19 ACE-2 down-regulation has been associated with an increase in angiotensin 2 (AT2). The action of proinflammatory cytokines, the increase in AT2 and the presence of antiphospholipid antibodies are known factors for TF activation and overexpression. It is very likely that the overexpression of TF in COVID-19 may be related to the pathogenesis of the disease, hence the importance of knowing the aspects related to this protein and the therapeutic strategies that can be derived. Different therapeutic strategies are being built to curb the expression of TF as a therapeutic target for various prothrombotic events; therefore, analyzing this treatment strategy for COVID-19-associated coagulopathy is rational. Medications such as celecoxib, cyclosporine or colchicine can impact on COVID-19, in addition to its anti-inflammatory effect, through inhibition of TF.

scholarly journals Antiphospholipid Antibodies in Sickle Cell Disease: A Systematic Review and Exploratory Meta-Analysis

2021 ◽  
Vol 27 ◽  
pp. 107602962110029
Author(s):  
Mira Merashli ◽  
Alessia Arcaro ◽  
Maria Graf ◽  
Matilde Caruso ◽  
Paul R. J. Ames ◽  
...  
Keyword(s):  
Sickle Cell Disease ◽  
Sickle Cell ◽  
Antiphospholipid Antibodies ◽  
Meta Analysis ◽  
Age Groups ◽  
Anticardiolipin Antibodies ◽  
Cell Disease ◽  
Pooled Prevalence ◽  
The Relationship

The relationship between antiphospholipid antibodies (aPL) and sickle cell disease (SCD) has never been systematically addressed. Our aim was to evaluate potential links between SCD and aPL in all age groups. EMBASE/PubMed was screened from inception to May 2020 and Peto odds ratios for rare events were calculated. The pooled prevalence (PP) of IgG anticardiolipin antibodies (aCL) was higher in individuals with SCD than in controls (27.9% vs 8.7%, P < 0.0001), that of IgM aCL was similar in the two groups (2.9% vs 2.7%); only individuals with SCD were positive for lupus anticoagulant (LA) (7.7% vs 0%, P < 0.0001). The PP of leg ulcers was similar between aPL positive and negative individuals (44% vs 53%) and between patients in acute crisis and stable patients (5.6% vs 7.3%). Reporting of aPL as a binary outcome and not as a titer precluded further interpretation. The results indicate that a prospective case-control study with serial measurements of a panel of aPL in SCD patients might be warranted, in order to understand further the possible pathogenic role of aPL in SCD.

Meta-analysis of the risk of venous thrombosis in individuals with antiphospholipid antibodies without underlying autoimmune disease or previous thrombosis

Lupus ◽  
1998 ◽  
Vol 7 (1) ◽  
pp. 15-22 ◽  
Author(s):  
D G Wahl ◽  
F Guillemin ◽  
E de Maistre ◽  
C Perret-Guillaume ◽  
T Lecompte ◽  
...  
Keyword(s):  
Autoimmune Disease ◽  
Venous Thrombosis ◽  
Antiphospholipid Antibodies ◽  
Meta Analysis
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