Universität zu Köln

Koudelka, Adolf ORCID: 0000-0002-9998-8383, Ambrozova, Gabriela ORCID: 0000-0002-8172-9746, Klinke, Anna, Fidlerova, Tana, Martiskova, Hana, Kuchta, Radek, Rudolph, Tanja K., Kadlec, Jaroslav, Kuchtova, Zdenka, Woodcock, Steven R., Freeman, Bruce A., Kubala, Lukas ORCID: 0000-0002-7729-7338 and Pekarova, Michaela (2016). Nitro-Oleic Acid Prevents Hypoxia- and Asymmetric Dimethylarginine-Induced Pulmonary Endothelial Dysfunction. Cardiovasc. Drugs Ther., 30 (6). S. 579 - 587. DORDRECHT: SPRINGER. ISSN 1573-7241

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Abstract

Pulmonary hypertension (PH) represents a serious health complication accompanied with hypoxic conditions, elevated levels of asymmetric dimethylarginine (ADMA), and overall dysfunction of pulmonary vascular endothelium. Since the prevention strategies for treatment of PH remain largely unknown, our study aimed to explore the effect of nitro-oleic acid (OA-NO2), an exemplary nitro-fatty acid (NO2-FA), in human pulmonary artery endothelial cells (HPAEC) under the influence of hypoxia or ADMA. HPAEC were treated with OA-NO2 in the absence or presence of hypoxia and ADMA. The production of nitric oxide (NO) and interleukin-6 (IL-6) was monitored using the Griess method and ELISA, respectively. The expression or activation of different proteins (signal transducer and activator of transcription 3, STAT3; hypoxia inducible factor 1 alpha, HIF-1 alpha; endothelial nitric oxide synthase, eNOS; intercellular adhesion molecule-1, ICAM-1) was assessed by the Western blot technique. We discovered that OA-NO2 prevents development of endothelial dysfunction induced by either hypoxia or ADMA. OA-NO2 preserves normal cellular functions in HPAEC by increasing NO production and eNOS expression. Additionally, OA-NO2 inhibits IL-6 production as well as ICAM-1 expression, elevated by hypoxia and ADMA. Importantly, the effect of OA-NO2 is accompanied by prevention of STAT3 activation and HIF-1 alpha stabilization. In summary, OA-NO2 eliminates the manifestation of hypoxia- and ADMA-mediated endothelial dysfunction in HPAEC via the STAT3/HIF-1 alpha cascade. Importantly, our study is bringing a new perspective on molecular mechanisms of NO2-FAs action in pulmonary endothelial dysfunction, which represents a causal link in progression of PH.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Koudelka, Adolf UNSPECIFIED orcid.org/0000-0002-9998-8383 UNSPECIFIED Ambrozova, Gabriela UNSPECIFIED orcid.org/0000-0002-8172-9746 UNSPECIFIED Klinke, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Fidlerova, Tana UNSPECIFIED UNSPECIFIED UNSPECIFIED Martiskova, Hana UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuchta, Radek UNSPECIFIED UNSPECIFIED UNSPECIFIED Rudolph, Tanja K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kadlec, Jaroslav UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuchtova, Zdenka UNSPECIFIED UNSPECIFIED UNSPECIFIED Woodcock, Steven R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Freeman, Bruce A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kubala, Lukas UNSPECIFIED orcid.org/0000-0002-7729-7338 UNSPECIFIED Pekarova, Michaela UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-254002
DOI:	10.1007/s10557-016-6700-3
Journal or Publication Title:	Cardiovasc. Drugs Ther.
Volume:	30
Number:	6
Page Range:	S. 579 - 587
Date:	2016
Publisher:	SPRINGER
Place of Publication:	DORDRECHT
ISSN:	1573-7241
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FATTY ACIDS; OXIDE SYNTHASE; ARTERIAL-HYPERTENSION; MURINE MODEL; ACTIVATION Multiple languages Cardiac & Cardiovascular Systems; Pharmacology & Pharmacy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/25400