[Endothelial dysfunction in thrombotic thrombocytopenic purpura: therapeutic perspectives]. / Dysfonction endothéliale au cours du Purpura Thrombotique Thrombocytopénique : un nouvel axe de prise en charge ?
Rev Med Interne
; 42(3): 202-209, 2021 Mar.
Article
en Fr
| MEDLINE
| ID: mdl-33455838
ABSTRACT
Immune Thrombotic Thrombocytopenic Purpura (iTTP) is a rare but severe disease with a mortality rate of almost 100 % in the absence of adequate treatment. iTTP is caused by a severe deficiency in ADAMTS13 activity due to the production of inhibitory antibodies. Age has been shown to be a major prognostic factor. iTTP patients in the elderly (60yo and over) have more frequent organ involvement, especially heart and kidney failures compared with younger patients. They also have non-specific neurologic symptoms leading to a delayed diagnosis. Factors influencing this impaired survival among older patients remain unknown so far. Alteration of the functional capacity of involved organs could be part of the explanation as could be the consequences of vascular aging. In fact, severe ADAMTS13 deficiency is necessary but likely not sufficient for iTTP physiopathology. A second hit leading to endothelial activation is thought to play a central role in iTTP. Interestingly, the mechanisms involved in endothelial activation may share common features with those involved in vascular aging, potentially leading to endothelial dysfunction. It could thus be interesting to better investigate the causes of mid- and long-term mortality among older iTTP patients to confirm whether inflammation and endothelial activation really impact vascular aging and long-term mortality in those patients, in addition to their presumed role at iTTP acute phase. If so, further insights into the mechanisms involved could lead to new therapeutic targets.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Púrpura Trombocitopénica Trombótica
/
Enfermedades Vasculares
/
Púrpura Trombocitopénica Idiopática
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Aged
/
Humans
Idioma:
Fr
Revista:
Rev Med Interne
Año:
2021
Tipo del documento:
Article
País de afiliación:
Francia