Importance of inflammation and neurohumoral activation in Takotsubo cardiomyopathy.
J Card Fail
; 15(3): 206-13, 2009 Apr.
Article
em En
| MEDLINE
| ID: mdl-19327622
ABSTRACT
BACKGROUND:
To gain more insight into the involvement of inflammatory response and neurohumoral activation in Takotsubo cardiomyopathy (TTC), we investigated C-reactive protein (CRP), leukocytes, plasma catecholamines levels, iodine 123 meta-iodobenzylguanidine (123I-mIBG) myocardial uptake, myocardial perfusion (thallium 201 [201Tl] or technetium [Tc] 99m-tetrofosmin myocardial single photon emission computed tomography [SPECT]), and metabolism (fluorine 18-fluorodeoxyglucose positron emission tomography). METHODS ANDRESULTS:
Inflammatory status and brain natriuretic peptide (BNP) levels in 17 patients with TTC were compared with 14 age-matched patients. In TTC, elevated levels of CRP were evidenced on admission, reaching a peak in the following days (P < .01). CRP levels were correlated to baseline left ventricular ejection fraction (LVEF) and BNP levels (P < .05). Leukocytes were correlated to BNP and noradrenaline levels. Myocardial 123I-mIBG SPECT showed a reduced activity in the midventricle and apex corresponding to 35% +/- 23% of the total myocardial mass, partially reversible at follow-up. An identical pattern was retrieved when assessing myocardial glucose metabolism. At rest, no relevant abnormalities of myocardial perfusion could be evidenced at the subacute phase.CONCLUSION:
Inflammatory status in TTC was related to LVEF impairment and to the extent of neurohormonal activation. The hypothesis of a catecholamine-induced myocardial "stunning" is emphasized by the evidence of a reduced 123I-mIBG myocardial activity, impairment of myocardial glucose metabolism, and wall motion kinetic after the same temporospatial distribution.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteína C-Reativa
/
Peptídeo Natriurético Encefálico
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Cardiomiopatia de Takotsubo
Tipo de estudo:
Observational_studies
Limite:
Aged
/
Female
/
Humans
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Male
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article