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Fehsel K, Christl J. Comorbidity of osteoporosis and Alzheimer's disease: Is `AKT `-ing on cellular glucose uptake the missing link? Ageing Res Rev 2022; 76:101592. [PMID: 35192961 DOI: 10.1016/j.arr.2022.101592] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 02/08/2023]
Abstract
Osteoporosis and Alzheimer's disease (AD) are both degenerative diseases. Osteoporosis often proceeds cognitive deficits, and multiple studies have revealed common triggers that lead to energy deficits in brain and bone. Risk factors for osteoporosis and AD, such as obesity, type 2 diabetes, aging, chemotherapy, vitamin deficiency, alcohol abuse, and apolipoprotein Eε4 and/or Il-6 gene variants, reduce cellular glucose uptake, and protective factors, such as estrogen, insulin, exercise, mammalian target of rapamycin inhibitors, hydrogen sulfide, and most phytochemicals, increase uptake. Glucose uptake is a fine-tuned process that depends on an abundance of glucose transporters (Gluts) on the cell surface. Gluts are stored in vesicles under the plasma membrane, and protective factors cause these vesicles to fuse with the membrane, resulting in presentation of Gluts on the cell surface. This translocation depends mainly on AKT kinase signaling and can be affected by a range of factors. Reduced AKT kinase signaling results in intracellular glucose deprivation, which causes endoplasmic reticulum stress and iron depletion, leading to activation of HIF-1α, the transcription factor necessary for higher Glut expression. The link between diseases and aging is a topic of growing interest. Here, we show that diseases that affect the same biochemical pathways tend to co-occur, which may explain why osteoporosis and/or diabetes are often associated with AD.
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Na YJ, Choi KJ, Jung WH, Park SB, Kang S, Ahn JH, Kim KY. A Novel Selective 11β-HSD1 Inhibitor, (E)-4-(2-(6-(2,6-Dichloro-4-(Trifluoromethyl)Phenyl)-4-Methyl-1,1-Dioxido-1,2,6-Thiadiazinan-2-yl)Acetamido)Adamantan-1-Carboxamide (KR-67607), Prevents BAC-Induced Dry Eye Syndrome. Int J Mol Sci 2020; 21:ijms21103729. [PMID: 32466320 PMCID: PMC7279275 DOI: 10.3390/ijms21103729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/18/2020] [Accepted: 05/21/2020] [Indexed: 01/12/2023] Open
Abstract
Dry eye syndrome is the most common eye disease and it is caused by various reasons. As the balance of the tear film that protects the eyes is broken due to various causes, it becomes impossible to properly protect the eyes. In this study, the protective effects and underlying mechanisms of topical (E)-4-(2-(6-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-methyl-1,1-dioxido-1,2,6-thiadiazinan-2-yl)acetamido)adamantan-1-carboxamide (KR-67607), a novel selective 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) inhibitor, were investigated in benzalkonium chloride (BAC)-induced dry eye syndrome. BAC-treated rat eyes induced significant increases in ocular surface damage, decreased corneal thickness, corneal basement membrane destruction in the conjunctival epithelium, and expression of pro-inflammatory cytokines tumor necrosis factor-α and 11β-HSD1. These effects of BAC were reversed by topical KR-67607 treatment. Furthermore, KR-67607 decreased 4-hydroxynonenal expression and increased antioxidant and mucus secretion in BAC-treated rat eyes. Taken together, a novel selective 11β-HSD1 inhibitor can prevent BAC-induced dry eye syndrome by inhibiting pro-inflammatory cytokine and reactive oxygen species expression via the inhibition of both 11β-HSD1 activity and expression.
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Affiliation(s)
- Yoon-Ju Na
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
- Department of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
| | - Kyoung Jin Choi
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
| | - Won Hoon Jung
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
| | - Sung Bum Park
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
| | - Sein Kang
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
| | - Jin Hee Ahn
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, Korea;
| | - Ki Young Kim
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; (Y.-J.N.); (K.J.C.); (W.H.J.); (S.B.P.); (S.K.)
- Department of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
- Correspondence: ; Tel.: +82-42-860-7471
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Chen Y, Lu W, Jin Z, Yu J, Shi B. Carbenoxolone ameliorates hepatic lipid metabolism and inflammation in obese mice induced by high fat diet via regulating the JAK2/STAT3 signaling pathway. Int Immunopharmacol 2019; 74:105498. [DOI: 10.1016/j.intimp.2019.03.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/11/2019] [Accepted: 03/05/2019] [Indexed: 02/06/2023]
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Chen Y, Qian Q, Yu J. Carbenoxolone ameliorates insulin sensitivity in obese mice induced by high fat diet via regulating the IκB-α/NF-κB pathway and NLRP3 inflammasome. Biomed Pharmacother 2019; 115:108868. [PMID: 30999127 DOI: 10.1016/j.biopha.2019.108868] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/27/2019] [Accepted: 04/09/2019] [Indexed: 02/08/2023] Open
Abstract
The characteristic feature of obesity and insulin resistance is chronic low-grade inflammation. Nod-Like Receptor Pyrin 3 (NLRP3) inflammasome plays a central role in obesity-induced insulin resistance. However, how does Carbenoxolone (CBX) play its role in ameliorating insulin resistance in peripheral tissues of obese mice induced by high-fat diet (HFD) remains unknown. In our study, we explored the molecular mechanism of CBX in improving insulin resistance in liver and skeletal muscle in mice induced by the HFD. Our results revealed that in the CBX group, a significant decrease in fasting blood glucose, insulin and HOMA-IR score were observed. CBX could attenuate intracellular lipid accumulation and inflammation aggravation in liver and skeletal muscle. Besides, treatment with CBX could significantly reduce expressions of p-IκB-α, p-NF-κB, p-IRS-1, NLRP3 and inflammatory factors, increase expressions of p-PI3K and p-AKT. Therefore, CBX could dramatically improve insulin resistance in liver and skeletal muscle in mice induced by the high-fat diet. In conclusions, we demonstrate that CBX has a significant protective effect on diet-induced obesity in mice. The potential mechanisms include inhibiting IκB-α/NF-κB pathway, restricting the production of NLRP3 inflammasome and other inflammatory factors, reducing the expression of p-IRS-1, increasing the expressions of p-PI3K and p-AKT, thus ameliorating insulin resistance in liver and skeletal muscle of high-fat diet mice. Therefore CBX is an active agent against diet-induced obesity and is given the opportunity for the treatment of obesity related diseases.
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Affiliation(s)
- Yuning Chen
- Department of Geriatrics, the Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
| | - Qian Qian
- Department of Gastroenterology, the Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Jian Yu
- Department of Geriatrics, the Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
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5
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Mettang M, Meyer-Pannwitt V, Karpel-Massler G, Zhou S, Carragher NO, Föhr KJ, Baumann B, Nonnenmacher L, Enzenmüller S, Dahlhaus M, Siegelin MD, Stroh S, Mertens D, Fischer-Posovszky P, Schneider EM, Halatsch ME, Debatin KM, Westhoff MA. Blocking distinct interactions between Glioblastoma cells and their tissue microenvironment: A novel multi-targeted therapeutic approach. Sci Rep 2018; 8:5527. [PMID: 29615749 PMCID: PMC5882900 DOI: 10.1038/s41598-018-23592-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/15/2018] [Indexed: 11/09/2022] Open
Abstract
Due to the highly invasive nature of Glioblastoma (GB), complete surgical resection is not feasible, while motile tumour cells are often associated with several specific brain structures that enhance treatment-resistance. Here, we investigate the therapeutic potential of Disulfiram and Carbenoxolone, that inhibit two distinct interactions between GB and the brain tissue microenvironment: stress-induced cell-matrix adhesion and gap junction mediated cell-cell communication, respectively. Increase in cell numbers of tumour-initiating cells, which are cultured in suspension as cell clusters, and adherent differentiated cells can be blocked to a similar extent by Carbenoxolone, as both cell populations form gap junctions, but the adherent differentiated cells are much more sensitive to Disulfiram treatment, which - via modulation of NF-κB signalling - interferes with cell-substrate adhesion. Interestingly, inducing adhesion in tumour-initiating cells without differentiating them does not sensitize for Disulfiram. Importantly, combining Disulfiram, Carbenoxolone and the standard chemotherapeutic drug Temozolomide reduces tumour size in an orthotopic mouse model. Isolating GB cells from their direct environment within the brain represents an important addition to current therapeutic approaches. The blockage of cellular interactions via the clinically relevant substances Disulfiram and Carbenoxolone, has distinct effects on different cell populations within a tumour, potentially reducing motility and/or resistance to apoptosis.
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Affiliation(s)
- Melanie Mettang
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.,Institute of Physiological Chemistry, University Medical Center Ulm, Ulm, Germany
| | - Viola Meyer-Pannwitt
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.,Department of Internal Medicine III, University Medical Center Ulm, Ulm, Germany.,Mechanisms of Leukemogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Shaoxia Zhou
- Department of Clinical Chemistry, University Medical Center Ulm, Ulm, Germany
| | - Neil O Carragher
- Edinburgh Cancer Research Center UK, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Karl Josef Föhr
- Department of Anesthesiology, University Medical Center Ulm, Ulm, Germany
| | - Bernd Baumann
- Institute of Physiological Chemistry, University Medical Center Ulm, Ulm, Germany
| | - Lisa Nonnenmacher
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Stefanie Enzenmüller
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Meike Dahlhaus
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Markus D Siegelin
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, USA
| | - Sebastien Stroh
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.,Department of Neurology, University Medical Center Ulm, Ulm, Germany
| | - Daniel Mertens
- Department of Internal Medicine III, University Medical Center Ulm, Ulm, Germany.,Mechanisms of Leukemogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - E Marion Schneider
- Department of Clinical Chemistry, University Medical Center Ulm, Ulm, Germany
| | | | - Klaus-Michael Debatin
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany
| | - Mike-Andrew Westhoff
- Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.
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Seo M, Islam SA, Moon SS. Acute anti-obesity effects of intracerebroventricular 11β-HSD1 inhibitor administration in diet-induced obese mice. J Neuroendocrinol 2018; 30:e12580. [PMID: 29418022 DOI: 10.1111/jne.12580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 01/09/2018] [Accepted: 02/01/2018] [Indexed: 11/30/2022]
Abstract
The hypothalamus is the regulatory centre of both appetite and energy balance and endoplasmic reticulum (ER) stress in the hypothalamus is involved in the pathogenesis of obesity. Recently, inhibition of 11 β hydroxysteroid dehydrogenase type1 (11β-HSD1) was reported to have an anti-obesity effect by reducing fat mass. However, the link between the role of 11β-HSD1 in the hypothalamus and obesity has yet to be determined. In the present study, embryonal primary hypothalamic neurones and high-fat diet (HFD) fed mice were used to investigate the anorexigenic effects of 11β-HSD1 inhibitors both in vitro and in vivo. In hypothalamic neurones, carbenoxolone (a non selecitve 11β-HSD inhibitor) alleviated ER stress and ER stress-induced neuropeptide alterations. In HFD mice, i.c.v. administration of carbenoxolone or KR67500 (nonselective and selective 11β-HSD1 inhibitors, respectively) was associated with less weight gain compared to control mice for 24 hours after treatment, presumably by reducing food intake. Furthermore, glucose regulated protein (Grp78), spliced X-box binding protein (Xbp-1s), c/EBP homologous protein (chop) and ER DnaJ homologue protein (Erdj4) expression was decreased in the hypothalami of mice administrated 11β-HSD1 inhibitors compared to controls. Conversely, the phosphorylation of protein kinase B (PKB/Akt), signal transducer and activator of transcription 3 (Stat3), mitogen-activated protein kinase (MAPK/ERK) and S6 kinase1 (S6K1) in the hypothalamus was induced more in mice treated using the same regimes. In conclusion, acute 11β-HSD1 inhibition in the hypothalamus could reduce food intake by decreasing ER stress and increasing insulin, leptin, and mammalian target of rapamycin complex 1 (mTORC1) signalling.
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Affiliation(s)
- M Seo
- Medical Institute of Dongguk University, Gyeongju, South Korea
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, South Korea
| | - S A Islam
- Department of Internal Medicine, College of Medicine, Dongguk University, Gyeongju, South Korea
| | - S-S Moon
- Medical Institute of Dongguk University, Gyeongju, South Korea
- Department of Internal Medicine, College of Medicine, Dongguk University, Gyeongju, South Korea
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Li C, Xia J, Zhu W, Xin L, An C, Yang S, Li K. Systemic overexpression of the 11β‑HSD1 promotes endoplasmic reticulum stress in multiple tissues and the development of metabolic syndrome in mice. Mol Med Rep 2017; 16:7738-7744. [PMID: 28944856 DOI: 10.3892/mmr.2017.7530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 07/11/2017] [Indexed: 11/05/2022] Open
Abstract
Glucocorticoids are associated with lipid metabolism and their abnormal expression has an important function in the development of metabolic syndrome. The 11β‑hydroxysteroid dehydrogenase type 1 (11β‑HSD1) is a metabolic enzyme of glucocorticoids and may be a potential drug target for the treatment of metabolic syndrome. However, the association between the systemic expression of 11β‑HSD1 and metabolic syndrome remains to be elucidated. The present study used a cytomegalovirus promoter to obtain mice that systemically overexpressed the 11β‑HSD1 gene. The transgenic mice and negative control groups received a high‑fat diet at the age of 10 weeks in order to induce metabolic syndrome and this diet was continued for 12 weeks. Several indicators, including body weight, blood glucose, glucose tolerance and insulin resistance, were monitored in vivo. In addition, the protein expression levels of 11β‑HSD1 and DNA damage inducible transcript 3 were detected and the histopathology of important tissues for metabolic syndrome were analyzed. The current findings revealed that the body weights of transgenic mice were significantly higher compared with the control group before and during the periods of high fat diet induction. Transgenic mice also exhibited significantly impaired glucose tolerance, insulin resistance, endoplasmic reticulum stress and increased metabolic syndrome‑associated biochemical indicators in the blood and severely impaired liver and kidney functions. The present study successfully established a 11β‑HSD1 systemic overexpression mouse model that exhibited typical characteristics of metabolic syndrome and may be useful for future studies of metabolic syndrome.
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Affiliation(s)
- Chenxiao Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Jihan Xia
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Wenjuan Zhu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Leilei Xin
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Cuiping An
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Shulin Yang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
| | - Kui Li
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
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Seo M, Kim J, Moon SS, Hwang JS, Kim MA. Intraventricular administration of Tenebrio molitor larvae extract regulates food intake and body weight in mice with high-fat diet-induced obesity. Nutr Res 2017; 44:18-26. [PMID: 28821314 DOI: 10.1016/j.nutres.2017.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 05/10/2017] [Accepted: 05/12/2017] [Indexed: 11/26/2022]
Abstract
We recently reported the in vitro and in vivo antiobesity effects of Tenebrio molitor larvae, a traditional food in many countries, but it remains unknown how the larvae affect appetite regulation in mice with diet-induced obesity. We hypothesized that the extract of T molitor larvae mediates appetite by regulating neuropeptide expression. We investigated T molitor larvae extract's (TME's) effects on anorexigenesis and endoplasmic reticulum (ER) stress-induced orexigenic neuropeptide expression in the hypothalami of obese mice. Intracerebroventricular TME administration suppressed feeding by down-regulating the expression of the orexigenic neuropeptides neuropeptide Y and agouti-related protein. T molitor larvae extract significantly reduced the expression of ER stress response genes. These results suggest that TME and its bioactive components are potential therapeutics for obesity and ER stress-driven disease states.
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Affiliation(s)
- Minchul Seo
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Jongwan Kim
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Seong-Su Moon
- Department of Internal Medicine, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Jae-Sam Hwang
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Mi-Ae Kim
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun 55365, Republic of Korea.
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Prdx6 Upregulation by Curcumin Attenuates Ischemic Oxidative Damage via SP1 in Rats after Stroke. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6597401. [PMID: 28596967 PMCID: PMC5449737 DOI: 10.1155/2017/6597401] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/26/2017] [Indexed: 12/11/2022]
Abstract
Background The role of Peroxiredoxin 6 (Prdx6) in brain ischemia remains unclear. Curcumin (Cur) treatment elicits neuroprotective effects against cerebral ischemic injury, and the associated mechanisms may involve Prdx6. In this study, we investigated whether Prdx6 and the transcription factor specific protein 1 (SP1) were involved in the antioxidant effect of Cur after stoke. Methods Focal cerebral ischemic injury was induced by transient middle cerebral artery occlusion for 2 hours in male Sprague-Dawley rats treated with or without Prdx6 siRNA. Expression of Prdx6 in the penumbra was assessed by Real-Time PCR (RT-PCR), Western blot analysis, and immunoflourescent staining. In addition, infarct volume, neurological deficit score, and oxidative stress were evaluated. Prdx6 levels were also determined in the presence and absence of SP1 antagonist mithramycin A (MTM-A). Results Cur treatment upregulated Prdx6 protein expression and the number of Prdx6-positive neuronal cells 24 hours after reperfusion. Cur treatment also attenuated oxidative stress and induced neuroprotective effects against ischemic damage, whereas the beneficial effects of Cur treatment were lost in animals treated with Prdx6-siRNA. Prdx6 upregulation by Cur treatment was abolished by SP1 antagonists MTM. Conclusions Prdx6 upregulation by Cur treatment attenuates ischemic oxidative damage through SP1 induction in rats after stroke. This represents a novel mechanism of Cur-induced neuroprotection against cerebral ischemia.
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