Release of TNFα and IL6 from human monocytes infected withMycobacterium kansasii: A comparison toMycobacterium avium
- 1 September 1994
- journal article
- research article
- Published by Springer Nature in Infection
- Vol. 22 (5) , 326-329
- https://doi.org/10.1007/bf01715538
Abstract
Tumor necrosis factor α (TNFα) and interleukin 6 (IL6) are cytokines with a varied spectrum of inflammatory and immunological activities, for example modulation of acute phase proteins, fever and stimulation of B-lymphocytes.Mycobacterium avium has been shown to stimulate the release of TNFα and IL6 from cultured human monocytes and macrophages into the cell supernatant. Cultured human monocytes were infected withMycobacterium kansasii andM. avium. The concentrations of TNFα and IL6 were measured in the supernatant. Monocytes infected withM. kansasii produced significantly lower amounts of TNFα (34.8±20.3 pg/ml) and IL6 (12.0±8.9 pg/ml) compared to monocytes infected withM. avium (198.3±171.7 pg/ml and 63.2±37.6 pg/ml respectively). The extent of cytokine production might be relevant for the clinical manifestation of mycobacterial disease. Tumor-Nekrose-Faktor α (TNFα) und Interleukin 6 (IL6) sind Zytokine mit einem breiten Spektrum an inflammatorischen und immunologischen Aktivitäten wie beispielsweise Modulation der Akutphase-Proteine, Fieber und Stimulation der B-Lymphozyten. Es konnte gezeigt werden, daßMycobacterium avium den Ausstoß von TNFα und IL6 aus humanen Monozyten/Makrophagenkulturen in den Zellüberstand stimuliert. Humane Monozytenkulturen wurden mitMycobacterium kansasii undM. avium infiziert. In den Zellüberständen wurden die Konzentrationen an TNFα und IL6 gemessen. Die mitM. kansasii infizierten Monozytenkulturen produzierten signifikant weniger TNFα (34,8±20,3 pg/ml) und IL6 (12,0±8,9 pg/ml) verglichen mit jenen infiziert mitM. avium (198,3±171,7 pg/ml beziehungsweise 63,2±37,6 pg/ml). Das Ausmaß der Zytokinproduktion könnte für das klinische Bild mykobakterieller Infektionen von Bedeutung sein.Keywords
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