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Thyroid hormone enh...
Thyroid hormone enhances nitric oxide mediated bacterial clearance and promotes survival after meningococcal infection
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- Chen, Yao (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Sjölinder, Mikael (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Wang, Xiao (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Altenbacher, Georg (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Hagner, Matthias (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Berglund, Pernilla (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Gao, Yumin (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Lu, Ting (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Jonsson, Ann-Beth (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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- Sjölinder, Hong (author)
- Stockholms universitet,Institutionen för genetik, mikrobiologi och toxikologi
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(creator_code:org_t)
- 2012-07-23
- 2012
- English.
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In: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 7:7
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Abstract
Subject headings
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- Euthyroid sick syndrome characterized by reduced levels of thyroid hormones (THs) is observed in patients with meningococcal shock. It has been found that the level of THs reflects disease severity and is predictive for mortality. The present study was conducted to investigate the impact of THs on host defense during meningococcal infection. We found that supplementation of thyroxine to mice infected with Neisseria meningitidis enhanced bacterial clearance, attenuated the inflammatory responses and promoted survival. In vitro studies with macrophages revealed that THs enhanced bacteria-cell interaction and intracellular killing of meningococci by stimulating inducible nitric oxide synthase (iNos)-mediated NO production. TH treatment did not activate expression of TH receptors in macrophages. Instead, the observed TH-directed actions were mediated through nongenomic pathways involving the protein kinases PI3K and ERK1/2 and initiated at the membrane receptor integrin alpha v beta 3. Inhibition of nongenomic TH signaling prevented iNos induction, NO production and subsequent intracellular bacterial killing by macrophages. These data demonstrate a beneficial role of THs in macrophage-mediated N. meningitidis clearance. TH replacement might be a novel option to control meningococcal septicemia.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmakologi och toxikologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmacology and Toxicology (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- molekylärgenetik
- Molecular Genetics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Chen, Yao
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Sjölinder, Mikae ...
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Wang, Xiao
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Altenbacher, Geo ...
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Hagner, Matthias
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Berglund, Pernil ...
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show more...
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Gao, Yumin
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Lu, Ting
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Jonsson, Ann-Bet ...
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Sjölinder, Hong
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Pharmacology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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PLOS ONE
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Stockholm University