Increased TNF-alpha and decreased TGF-beta expression in peripheral blood leukocytes after acute myocardial infarction
| Autor: | S. Martin, Kerstin Kempf, H. Gülker, S. Müller-Scholze, R Füth, G. Haltern, C. Herder |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Endocrinology Diabetes and Metabolism Clinical Biochemistry Myocardial Infarction Gene Expression Inflammation Systemic inflammation Biochemistry Endocrinology Transforming Growth Factor beta Internal medicine Gene expression medicine Leukocytes Humans Myocardial infarction RNA Messenger Aged Ejection fraction business.industry Interleukin-6 Reverse Transcriptase Polymerase Chain Reaction Tumor Necrosis Factor-alpha Biochemistry (medical) RNA General Medicine Middle Aged medicine.disease Peripheral blood Female medicine.symptom business Transforming growth factor |
| Zdroj: | Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme. 38(5) |
| ISSN: | 0018-5043 |
| Popis: | Inflammation contributes to the development of atherosclerosis and cardiovascular events. Counteracting pro- and anti-inflammatory responses of serum cytokines have been reported, but the relevance of TNF-alpha, TGF-beta and IL-6 gene expression in peripheral blood leukocytes and their contribution to systemic inflammation in atherosclerosis, especially after acute myocardial infarction (AMI), has not been investigated yet. Using quantitative RT-PCR, we determined temporal cytokine mRNA expression alterations in blood cells from patients with AMI (n = 51). Serum cytokine concentrations were analyzed in parallel using the ELISA technique. TNF-alpha mRNA expression rates and serum concentrations were significantly elevated in AMI patients compared to controls (n = 77), while mRNA expression and serum content of TGF-beta were decreased. Interestingly, we found no statistically significant correlation between transcript and protein levels, indicating that gene expression in leukocytes may be an independent sign for systemic inflammation. While IL-6 was significantly increased in serum from AMI patients with positive correlation to left ventricular dysfunction and negative correlation to ejection fraction, IL-6 mRNA levels did not differ between patients and controls. Gene expression alterations indicate a sophisticated regulation of counteracting TNF-alpha and TGF-beta cytokine expression in peripheral blood leukocytes after AMI with bias towards a pro-inflammatory situation. |
| Databáze: | OpenAIRE |
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