PMID- 29387292 OWN - NLM STAT- MEDLINE DCOM- 20180813 LR - 20181113 IS - 1942-0994 (Electronic) IS - 1942-0900 (Print) IS - 1942-0994 (Linking) VI - 2017 DP - 2017 TI - Opposing Effects of Oxygen Regulation on Kallistatin Expression: Kallistatin as a Novel Mediator of Oxygen-Induced HIF-1-eNOS-NO Pathway. PG - 5262958 LID - 10.1155/2017/5262958 [doi] LID - 5262958 AB - Oxidative stress has both detrimental and beneficial effects. Kallistatin, a key component of circulation, protects against vascular and organ injury. Serum kallistatin levels are reduced in patients and animal models with hypertension, diabetes, obesity, and cancer. Reduction of kallistatin levels is inversely associated with elevated thiobarbituric acid-reactive substance. Kallistatin therapy attenuates oxidative stress and increases endothelial nitric oxide synthase (eNOS) and NO levels in animal models. However, kallistatin administration increases reactive oxygen species formation in immune cells and bacterial killing activity in septic mice. High oxygen inhibits kallistatin expression via activating the JNK-FOXO1 pathway in endothelial cells. Conversely, mild oxygen/hyperoxia stimulates kallistatin, eNOS, and hypoxia-inducible factor-1 (HIF-1) expression in endothelial cells and in the kidney of normal mice. Likewise, kallistatin stimulates eNOS and HIF-1, and kallistatin antisense RNA abolishes oxygen-induced eNOS and HIF-1 expression, indicating a role of kallistatin in mediating mild oxygen's stimulation on antioxidant genes. Protein kinase C (PKC) activation mediates HIF-1-induced eNOS synthesis in response to hyperoxia/exercise; thus, mild oxygen through PKC activation stimulates kallistatin-mediated HIF-1 and eNOS synthesis. In summary, oxidative stress induces down- or upregulation of kallistatin expression, depending on oxygen concentration, and kallistatin plays a novel role in mediating oxygen/exercise-induced HIF-1-eNOS-NO pathway. FAU - Chao, Julie AU - Chao J AUID- ORCID: 0000-0001-7294-2636 AD - Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA. FAU - Guo, Youming AU - Guo Y AD - Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA. FAU - Li, Pengfei AU - Li P AD - Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA. FAU - Chao, Lee AU - Chao L AD - Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, USA. LA - eng PT - Journal Article PT - Review DEP - 20171213 PL - United States TA - Oxid Med Cell Longev JT - Oxidative medicine and cellular longevity JID - 101479826 RN - 0 (Hypoxia-Inducible Factor 1) RN - 0 (Serpins) RN - 0 (kallistatin) RN - 31C4KY9ESH (Nitric Oxide) RN - EC 1.14.13.39 (NOS3 protein, human) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) RN - S88TT14065 (Oxygen) SB - IM MH - Animals MH - *Gene Expression Regulation MH - Humans MH - Hypoxia-Inducible Factor 1/*metabolism MH - Nitric Oxide/*metabolism MH - Nitric Oxide Synthase Type III/*metabolism MH - Oxidative Stress MH - Oxygen/*metabolism MH - Serpins/*biosynthesis MH - *Signal Transduction PMC - PMC5745740 EDAT- 2018/02/02 06:00 MHDA- 2018/08/14 06:00 PMCR- 2017/12/13 CRDT- 2018/02/02 06:00 PHST- 2017/08/17 00:00 [received] PHST- 2017/10/25 00:00 [accepted] PHST- 2018/02/02 06:00 [entrez] PHST- 2018/02/02 06:00 [pubmed] PHST- 2018/08/14 06:00 [medline] PHST- 2017/12/13 00:00 [pmc-release] AID - 10.1155/2017/5262958 [doi] PST - ppublish SO - Oxid Med Cell Longev. 2017;2017:5262958. doi: 10.1155/2017/5262958. Epub 2017 Dec 13.