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Sasa borealis Ethanol Extract Protects PC12 Neuronal Cells against Oxidative Stress. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12126155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The overproduction of reactive oxygen species (ROS) can cause oxidative stress to biomolecules such as nucleic acids, proteins, and lipids, leading to neurodegenerative disorders. Sasa borealis (SB) has antioxidant, anti-inflammatory, antidiabetic, and anti-obesity effects. We evaluated the neuroprotective activity of SB on hydrogen peroxide (H2O2)-induced oxidative stress. We investigated the antioxidant and neuroprotective effects of SB water extract (SBW) and SB ethanol extract (SBE) by measuring the radical scavenging activities and intracellular ROS production. SBE, which had a high level of isoorientin, had higher antioxidative activities than SBW in 2,2′-azino-bis-(3-ethylbenzothiazolin-6-sulfonic acid) diammonium salt (ABTS+) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. It also reduced ROS generation in pheochromocytoma 12 (PC12) cells more significantly than SBW. It increased the translation of heme oxygenase-1 (HO-1), superoxide dismutase 2 (SOD2), catalase (CAT), and glutathione peroxidase (GPx) with a corresponding increase in the translation of NF-E2-related factor-2 (Nrf-2). In conclusion, SBE with high levels of phenolic compounds such as isoorientin shows promise for preventing neurodegenerative diseases.
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Pyeon DB, Lee SE, Yoon JW, Park HJ, Oh SH, Lee DG, Kim EY, Park SP. Comparison of the improving embryo development effects of Sasa quelpaertensis Nakai extract, p-coumaric acid, and myricetin on porcine oocytes according to their antioxidant capacities. Theriogenology 2022; 185:97-108. [DOI: 10.1016/j.theriogenology.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022]
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Park JY, Jang MG, Oh JM, Ko HC, Hur SP, Kim JW, Baek S, Kim SJ. Sasa quelpaertensis Leaf Extract Ameliorates Dyslipidemia, Insulin Resistance, and Hepatic Lipid Accumulation in High-Fructose-Diet-Fed Rats. Nutrients 2020; 12:nu12123762. [PMID: 33297496 PMCID: PMC7762336 DOI: 10.3390/nu12123762] [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: 10/28/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 12/13/2022] Open
Abstract
Background: Increased dietary fructose consumption is closely associated with lipid and glucose metabolic disorders. Sasa quelpaertensis Nakai possesses various health-promoting properties, but there has been no research on its protective effect against fructose-induced metabolic dysfunction. In this study, we investigated the effects of S. quelpaertensis leaf extract (SQE) on metabolic dysfunction in high-fructose-diet-fed rats. Methods: Animals were fed a 46% carbohydrate diet, a 60% high-fructose diet, or a 60% high-fructose diet with SQE (500 mg/kg of body weight (BW)/day) in drinking water for 16 weeks. Serum biochemical parameters were measured and the effects of SQE on hepatic histology, protein expression, and transcriptome profiles were investigated. Results: SQE improved dyslipidemia and insulin resistance induced in high-fructose-diet-fed rats. SQE ameliorated the lipid accumulation and inflammatory response in liver tissues by modulating the expressions of key proteins related to lipid metabolism and antioxidant response. SQE significantly enriched the genes related to the metabolic pathway, namely, the tumor necrosis factor (TNF) signaling pathway and the PI3K-Akt signaling pathway. Conclusions: SQE could effectively prevent dyslipidemia, insulin resistance, and hepatic lipid accumulation by regulation of metabolism-related gene expressions, suggesting its role as a functional ingredient to prevent lifestyle-related metabolic disorders.
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Affiliation(s)
- Jeong Yong Park
- Department of Biology, Jeju National University, Jeju 63243, Korea; (J.Y.P.); (M.G.J.); (J.M.O.)
| | - Mi Gyeong Jang
- Department of Biology, Jeju National University, Jeju 63243, Korea; (J.Y.P.); (M.G.J.); (J.M.O.)
| | - Jung Min Oh
- Department of Biology, Jeju National University, Jeju 63243, Korea; (J.Y.P.); (M.G.J.); (J.M.O.)
| | - Hee Chul Ko
- Biotech Regional Innovation Center, Jeju Nation University, Jeju 63423, Korea; (H.C.K.); (J.-W.K.); (S.B.)
| | - Sung-Pyo Hur
- Jeju International Marine Science Research & Logistics Center, Korea Institute of Ocean Science & Technology, Gujwa, Jeju 63349, Korea;
| | - Jae-Won Kim
- Biotech Regional Innovation Center, Jeju Nation University, Jeju 63423, Korea; (H.C.K.); (J.-W.K.); (S.B.)
| | - Songyee Baek
- Biotech Regional Innovation Center, Jeju Nation University, Jeju 63423, Korea; (H.C.K.); (J.-W.K.); (S.B.)
| | - Se-Jae Kim
- Department of Biology, Jeju National University, Jeju 63243, Korea; (J.Y.P.); (M.G.J.); (J.M.O.)
- Biotech Regional Innovation Center, Jeju Nation University, Jeju 63423, Korea; (H.C.K.); (J.-W.K.); (S.B.)
- Correspondence: ; Tel.: +82-64-754-3529
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Ziqubu K, Dludla PV, Joubert E, Muller CJF, Louw J, Tiano L, Nkambule BB, Kappo AP, Mazibuko-Mbeje SE. Isoorientin: A dietary flavone with the potential to ameliorate diverse metabolic complications. Pharmacol Res 2020; 158:104867. [PMID: 32407953 DOI: 10.1016/j.phrs.2020.104867] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 12/11/2022]
Abstract
Isoorientin is a natural C-glucosyl flavone that is generating a lot of interest due to its multiple pharmacological activities. Increasing experimental data have shown that the robust antioxidant and anti-inflammatory properties of isoorientin remain important in ameliorating a number of metabolic complications. In fact, plants rich in isoorientin have demonstrated strong ameliorative properties against complications such as hyperglycemia, hyperlipidemia, and insulin resistance. However, while such evidence is accumulating, it has not been reviewed to better inform on the therapeutic potential of this flavone in improving human health. This review examines and extrapolates available literature on the potential beneficial or detrimental effects associated with the use of isoorientin in mitigating metabolic diseases, with a specific focus on diabetes, obesity, and insulin resistance, including associated complications. The discussion includes effective doses in various experimental settings and proposed molecular mechanisms by which isoorientin may exert its therapeutic effects. In addition, the protective effects of extracts of a number of isoorientin-rich plants against metabolic complications will be highlighted.
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Affiliation(s)
- Khanyisani Ziqubu
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa
| | - Phiwayinkosi V Dludla
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona 60131, Italy
| | - Elizabeth Joubert
- Plant Bioactives Group, Post-Harvest and Agro-Processing Technologies, Agricultural Research Council, Infruitec-Nietvoorbij, Stellenbosch 7599, South Africa; Department of Food Science, Stellenbosch University, Stellenbosch 7599, South Africa
| | - Christo J F Muller
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa; Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
| | - Johan Louw
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona 60131, Italy
| | - Bongani B Nkambule
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban 4000, South Africa
| | - Abidemi P Kappo
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa; Department of Biochemistry, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
| | - Sithandiwe E Mazibuko-Mbeje
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa; Department of Biochemistry, Faculty of Natural and Agricultural Sciences, North West University, Mafikeng Campus, Private Bag X 2046, Mmabatho 2735, South Africa.
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Chen X, Duong MN, Psaltis PJ, Bursill CA, Nicholls SJ. High-density lipoproteins attenuate high glucose-impaired endothelial cell signaling and functions: potential implications for improved vascular repair in diabetes. Cardiovasc Diabetol 2017; 16:121. [PMID: 28962618 PMCID: PMC5622442 DOI: 10.1186/s12933-017-0605-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Accepted: 09/22/2017] [Indexed: 12/16/2022] Open
Abstract
Background Abnormalities of endothelial cell function are proposed to be a critical factor underlying adverse cardiovascular outcomes in the setting of hyperglycaemia. While high-density lipoproteins (HDL) have been demonstrated to be cardioprotective, the impact on the endothelium in hyperglycaemia has not been fully elucidated. Methods Human umbilical vein endothelial cells (HUVECs) were exposed to high-glucose conditions using dextrose, the main isoform of glucose, and native HDL. HUVEC proliferation and migration were determined. The key signalling pathways that regulate endothelial cell function were also characterized. Results Increasing concentrations of dextrose resulted in significant reductions in HUVEC proliferation, this was attenuated by coincubation with HDL. In support of this, HDL was also found to rescue dextrose impaired expression of PCNA and the activation (phosphorylation) of the key transcription factor for proliferation ERK. Dextrose also dose-dependently inhibited HUVEC migration, which was mitigated by co-incubation with HDL. Consistent with this, HDL prevented dextrose-induced inhibition of p38 phosphorylation, responsible for cell migration. Finally, phosphorylation of the pro-survival transcription factor Akt was dose-dependently inhibited by dextrose, however, this was completely rescued by co-administration with HDL. Conclusion Dextrose-induced hyperglycaemia causes the impairment of endothelial cell proliferation and migration and inhibits the activation of ERK, p38 and Akt pathways. The protective effects of HDL in this milieu highlights the potential for HDL to improve vascular repair in patients with impaired glucose homeostasis.
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Affiliation(s)
- Xing Chen
- Department of Cell Biology and Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - My-Ngan Duong
- Department of Cell Biology and Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH, 44195, USA. .,Heart Health, South Australian Health and Medical Research Institute, Adelaide, SA, 5000, Australia. .,South Australian Health and Medical Research Institute, PO Box 11060, Adelaide, SA, 5001, Australia.
| | - Peter J Psaltis
- Heart Health, South Australian Health and Medical Research Institute, Adelaide, SA, 5000, Australia
| | - Christina A Bursill
- Heart Health, South Australian Health and Medical Research Institute, Adelaide, SA, 5000, Australia
| | - Stephen J Nicholls
- Department of Cell Biology and Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH, 44195, USA.,Heart Health, South Australian Health and Medical Research Institute, Adelaide, SA, 5000, Australia
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Hepatoprotective effect of 2′- O -galloylhyperin against oxidative stress-induced liver damage through induction of Nrf2/ARE-mediated antioxidant pathway. Food Chem Toxicol 2017; 102:129-142. [DOI: 10.1016/j.fct.2017.02.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 12/26/2016] [Accepted: 02/13/2017] [Indexed: 12/28/2022]
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Patil MP, Palma J, Simeon NC, Jin X, Liu X, Ngabire D, Kim NH, Tarte NH, Kim GD. Sasa borealis leaf extract-mediated green synthesis of silver–silver chloride nanoparticles and their antibacterial and anticancer activities. NEW J CHEM 2017. [DOI: 10.1039/c6nj03454c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ecofriendly procedure for silver–silver chloride nanoparticle synthesis with different reaction parameters tested.
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Affiliation(s)
- Maheshkumar Prakash Patil
- Department of Microbiology
- College of Natural Sciences
- Pukyong National University
- Nam-gu
- Republic of Korea
| | - Jaymee Palma
- Korea Science Academy of KAIST
- Busan
- Republic of Korea
| | | | - Xing Jin
- Korea Science Academy of KAIST
- Busan
- Republic of Korea
| | - Xiaolin Liu
- Korea Science Academy of KAIST
- Busan
- Republic of Korea
| | - Daniel Ngabire
- Department of Microbiology
- College of Natural Sciences
- Pukyong National University
- Nam-gu
- Republic of Korea
| | - Nan-Hee Kim
- Department of Microbiology
- College of Natural Sciences
- Pukyong National University
- Nam-gu
- Republic of Korea
| | | | - Gun-Do Kim
- Department of Microbiology
- College of Natural Sciences
- Pukyong National University
- Nam-gu
- Republic of Korea
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Guan G, Han H, Yang Y, Jin Y, Wang X, Liu X. Neferine prevented hyperglycemia-induced endothelial cell apoptosis through suppressing ROS/Akt/NF-κB signal. Endocrine 2014; 47:764-71. [PMID: 24590293 DOI: 10.1007/s12020-014-0186-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 01/25/2014] [Indexed: 10/25/2022]
Abstract
Diabetes mellitus has been identified as a major risk factor for cardiovascular diseases. High glucose-induced endothelial dysfunction and apoptosis is an important pathological feature of diabetic vasculopathy. Neferine, an alkaloid ingredient in lotus seed embryo has many biological actions such as anticancer and antioxidant. But little is known about whether Neferine protects endothelial cells against high glucose-induced oxidative stress and apoptosis. The present study was conducted to investigate the preventive effects of Neferine on hyperglycemia-induced injury of human umbilical vein endothelial cells (HUVECs). Our study showed that Neferine pretreatment effectively suppressed high glucose-induced HUVECs apoptosis. Also, Neferine pretreatment inhibited the augment of reactive oxygen species (ROS) in high glucose-treated HUVECs. The changes of SOD and MDA level in high glucose-treated HUVECs were also prevented by Neferine. Further study showed that Neferine did not affect the phosphorylation of JNK and p38 in high glucose-treated HUVECs. Interestingly, Neferine markedly inhibited high glucose-induced activation of PI3K/Akt pathway in HUVECs. High glucose-induced activation of NF-κB signal was also obviously suppressed by Neferine pretreatment. Collectively, we found that Neferine inhibited high glucose-induced endothelial apoptosis via blocking ROS/Akt/NF-κB pathway, which provides the evidence for using Neferine to treat diabetic vasculopathy.
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Affiliation(s)
- Guoying Guan
- International Department, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
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Sasa quelpaertensis leaf extract suppresses dextran sulfate sodium-induced colitis in mice by inhibiting the proinflammatory mediators and mitogen-activated protein kinase phosphorylation. Nutr Res 2014; 34:894-905. [PMID: 25287291 DOI: 10.1016/j.nutres.2014.09.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 08/29/2014] [Accepted: 09/05/2014] [Indexed: 01/06/2023]
Abstract
Sasa quelpaertensis leaves exert anti-inflammatory and anticarcinogenic effects, although it remains unclear whether these leaves can suppress inflammation-related intestinal diseases. This study hypothesized that Sasa quelpaertensis leaf extract (SQE) exerts a protective effect against inflammation in a dextran sulfate sodium (DSS)-induced colitis mouse model. Therefore, colon tissues of DSS-induced colitis mice that were treated with SQE were assayed for levels of proinflammatory markers, mitogen-activated protein kinase signaling, and activation of nuclear factor κB. For this purpose, mice were pretreated with SQE (100 mg/kg or 300 mg/kg body weight) by gavage for a 2-week period. Mice then received either SQE or sulfasalazine (100 mg/kg body weight) with 2.5% DSS in drinking water for 7 days twice daily and 7 days of tap water ad libitum between DSS treatment. Treatment with SQE was found to attenuate the severity of DSS-induced colitis, as assessed by disease activity index scores, shrinkage of colon length, and histopathologic changes. SQE reduced DSS-induced proliferation in distal colon tissues. It also significantly suppressed levels of tumor necrosis factor-α in serum and colon tissues, nitric oxide synthase, cyclooxygenase, and levels of phosphorylated c-Jun N-terminal kinases, p38, extracellular-signal-regulated kinases 1/2, and IκBα in colon tissues. To our knowledge, this is the first study to demonstrate that SQE supplementation can exert an anti-inflammatory effect on experimental chronic colitis.
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Kim KM, Kim YS, Lim JY, Min SJ, Ko HC, Kim SJ, Kim Y. Intestinal anti-inflammatory activity of Sasa quelpaertensis leaf extract by suppressing lipopolysaccharide-stimulated inflammatory mediators in intestinal epithelial Caco-2 cells co-cultured with RAW 264.7 macrophage cells. Nutr Res Pract 2014; 9:3-10. [PMID: 25671061 PMCID: PMC4317476 DOI: 10.4162/nrp.2015.9.1.3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/18/2014] [Accepted: 07/02/2014] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND/OBJECTIVES Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, involves chronic inflammation of the gastrointestinal tract. Previously, Sasa quelpaertensis leaves have been shown to mediate anti-inflammation and anti-cancer effects, although it remains unclear whether Sasa leaves are able to attenuate inflammation-related intestinal diseases. Therefore, the aim of this study was to investigate the anti-inflammatory effects of Sasa quelpaertensis leaf extract (SQE) using an in vitro co-culture model of the intestinal epithelial environment. MATERIALS/METHODS An in vitro co-culture system was established that consisted of intestinal epithelial Caco-2 cells and RAW 264.7 macrophages. Treatment with lipopolysaccharide (LPS) was used to induce inflammation. RESULTS Treatment with SQE significantly suppressed the secretion of LPS-induced nitric oxide (NO), prostaglandin E2 (PGE2), IL-6, and IL-1β in co-cultured RAW 264.7 macrophages. In addition, expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-2, and tumor necrosis factor (TNF)-α were down-regulated in response to inhibition of IκBα phosphorylation by SQE. Compared with two bioactive compounds that have previously been identified in SQE, tricin and P-coumaric acid, SQE exhibited the most effective anti-inflammatory properties. CONCLUSIONS SQE exhibited intestinal anti-inflammatory activity by inhibiting various inflammatory mediators mediated through nuclear transcription factor kappa-B (NF-kB) activation. Thus, SQE has the potential to ameliorate inflammation-related diseases, including IBD, by limiting excessive production of pro-inflammatory mediators.
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Affiliation(s)
- Kyung-Mi Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Yoo-Sun Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Ji Ye Lim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Soo Jin Min
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Hee-Chul Ko
- Jeju Sasa Industry Development Agency, Jeju National University, Jeju 690-756, Korea
| | - Se-Jae Kim
- Department of Biology, Jeju National University, Jeju 690-756, Korea
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
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Yang JP, He H, Lu YH. Four flavonoid compounds from Phyllostachys edulis leaf extract retard the digestion of starch and its working mechanisms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:7760-7770. [PMID: 25019533 DOI: 10.1021/jf501931m] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bamboo leaf extract as a food additive has been used for preventing the oxidation of food. In the present study, we investigated the influence of Phyllostachys edulis leaf extract on starch digestion. Orientin, isoorientin, vitexin, and isovitexin were determined as its α-amylase inhibitory constituents. An inhibitory kinetics experiment demonstrated that they competitively inhibit α-amylase with Ki values of respectively 152.6, 11.5, 569.6, and 75.8 μg/mL. Molecular docking showed the four flavones can interact with the active site of α-amylase, and their inhibitory activity was greatly influenced by the glucoside linking position and 3'-hydroxyl. Moreover, the results of starch-iodine complex spectroscopy, X-ray diffraction, and scanning electron microscopy indicated that P. edulis flavonoids retard the digestion of starch not only through interaction with digestive enzymes, but also through interaction with starch. Thus, P. edulis leaf extract can be potentially used as a starch-based food additive for adjusting postprandial hyperglycemia.
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Affiliation(s)
- Jun-Peng Yang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, People's Republic of China
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Song Y, Lee SJ, Jang SH, Ha JH, Song YM, Ko YG, Kim HD, Min W, Kang SN, Cho JH. Sasa borealis stem extract attenuates hepatic steatosis in high-fat diet-induced obese rats. Nutrients 2014; 6:2179-95. [PMID: 24905748 PMCID: PMC4073142 DOI: 10.3390/nu6062179] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/12/2014] [Accepted: 05/26/2014] [Indexed: 01/04/2023] Open
Abstract
The aim of the current study is to examine the improving effect of Sasa borealis stem (SBS) extract extracts on high-fat diet (HFD)-induced hepatic steatosis in rats. To determine the hepatoprotective effect of SBS, we fed rats a normal regular diet (ND), HFD, and HFD supplemented with 150 mg/kg body weight (BW) SBS extracts for five weeks. We found that the body weight and liver weight of rats in the HFD + SBS group were significantly lower than those in the HFD group. Significantly lower serum total cholesterol (TC) and triglyceride (TG) concentrations were observed in the SBS-supplemented group compared with the HFD group. We also found that the HFD supplemented with SBS group showed dramatically reduced hepatic lipid accumulation compared to the HFD alone group, and administration of SBS resulted in dramatic suppression of TG, TC in the HFD-induced fatty liver. In liver gene expression within the SBS treated group, PPARα was significantly increased and SREBP-1c was significantly suppressed. SBS induced a significant decrease in the hepatic mRNA levels of PPARγ, FAS, ACC1, and DGAT2. In conclusion, SBS improved cholesterol metabolism, decreased lipogenesis, and increased lipid oxidation in HFD-induced hepatic steatosis in rats, implying a potential application in treatment of non-alcoholic fatty liver disease.
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Affiliation(s)
- Yuno Song
- Institute of Agriculture and Life Science, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea.
| | - Soo-Jung Lee
- Department of Foods and Nutrition, Gyeongsang National University, Jinju 660-701, Korea.
| | - Sun-Hee Jang
- Institute of Agriculture and Life Science, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea.
| | - Ji Hee Ha
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 660-758, Korea.
| | - Young Min Song
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 660-758, Korea.
| | - Yeoung-Gyu Ko
- Animal Genetic Resources Station, National Institute of Animal Science, RDA, Namwon 590-832, Korea.
| | - Hong-Duck Kim
- Department of Environmental Health Science, New York Medical College, Valhalla, NY 10595, USA.
| | - Wongi Min
- Institute of Agriculture and Life Science, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea.
| | - Suk Nam Kang
- Department of Bioindustry, Daegu University, Gyungsan 712-714, Korea.
| | - Jae-Hyeon Cho
- Institute of Agriculture and Life Science, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea.
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Combination of Sasa quelpaertensis Nakai Leaf Extract and Cisplatin Suppresses the Cancer Stemness and Invasion of Human Lung Cancer Cells. Integr Cancer Ther 2014; 13:529-40. [DOI: 10.1177/1534735414534462] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Lung cancer is the leading cause of cancer death worldwide, and most chemotherapeutic drugs have limited success in treating this disease. Furthermore, some drugs show undesirable side effects due to the enrichment of cancer stem cells (CSCs) that are present, leading to resistance to conventional chemotherapy and tumor relapse. CSCs possess self-renewal characteristics, aggressive tumor initiating activity, and ability to facilitate tumor metastasis. Therefore, development of nontoxic agents that can potentiate chemotherapy and eliminate CSCs would be highly desirable. In the present study, we investigated whether Sasa quelpaertensis leaf extracts (SQE) and cisplatin (CIS), individually or in combination, would exert anti-CSC and antimetastatic effect in H1299 and A549 human lung cancer cells. Following these treatments, cell growth, phosphorylation of phosphoinositide-3 kinase, and activation of the mammalian target of rapamycin were inhibited. Decreased serial sphere formation, clonogenicity, and expression of major stem cell markers, such as CD44 and SOX-2, in CD44+ cancer stem cells were also observed. In addition, inhibition of cell migration and invasion in both cell lines as well as inhibition of matrix metalloproteinase-2 activity and expression were detected. Importantly, the anticancer stemness and antimetastasis effects in each of these assays were greater for the combined treatment with SQE and CIS than with each treatment individually. In conclusion, the data suggest that SQE alone, or in combination with CIS, represents a promising therapeutic strategy for eliminating cancer stemness and cell invasion potential of CSCs, thereby treating and preventing metastatic lung cancer cells.
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Kim J, Kim YS, Lee HA, Lim JY, Kim M, Kwon O, Ko HC, Kim SJ, Shin JH, Kim Y. Sasa quelpaertensisLeaf Extract Improves High Fat Diet-Induced Lipid Abnormalities and Regulation of Lipid Metabolism Genes in Rats. J Med Food 2014; 17:571-81. [PMID: 24738745 DOI: 10.1089/jmf.2013.2916] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Jina Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Yoo-Sun Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Hyun Ah Lee
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Ji Ye Lim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Mina Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Oran Kwon
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
| | - Hee-Chul Ko
- Jeju Sasa Industry Development Agency, Jeju National University, Jeju-si, Jeju, Korea
| | - Se-Jae Kim
- Department of Biology, Jeju National University, Jeju-si, Jeju, Korea
| | - Jae-Ho Shin
- Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, Kyeonggi-do, Korea
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
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16
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p21(WAF1/CIP1) Expression is Differentially Regulated by Metformin and Rapamycin. Int J Chronic Dis 2014; 2014:327640. [PMID: 26464852 PMCID: PMC4590942 DOI: 10.1155/2014/327640] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/03/2014] [Accepted: 02/13/2014] [Indexed: 12/14/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) pathway plays an important role in the development of diabetic nephropathy and other age-related diseases. One of the features of DN is the elevated expression of p21WAF1/CIP1. However, the importance of the mTOR signalling pathway in p21 regulation is poorly understood. Here we investigated the effect of metformin and rapamycin on mTOR-related phenotypes in cell lines of epithelial origin. This study reports that metformin inhibits high glucose-induced p21 expression. High glucose opposed metformin in regulating cell size, proliferation, and protein synthesis. These effects were associated with reduced AMPK activation, affecting downstream mTOR signalling. However, the inhibition of the mTOR pathway by rapamycin did not have a negative effect on p21 expression, suggesting that metformin regulates p21 upstream of mTOR. These findings provide support for the hypothesis that AMPK activation may regulate p21 expression, which may have implications for diabetic nephropathy and other age-related pathologies.
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17
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Isoorientin protects BRL-3A rat liver cell against hydrogen peroxide-induced apoptosis by inhibiting mitochondrial dysfunction, inactivating MAPKs, activating Akt and scavenging ROS and NO. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.biomag.2013.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Kovacic P, Somanathan R. Sugar Toxicity—Fundamental Molecular Mechanisms: α-Dicarbonyl, Electron Transfer, and Radicals. J Carbohydr Chem 2013. [DOI: 10.1080/07328303.2012.762102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Nam JS, Chung HJ, Jang MK, Jung IA, Park SH, Cho SI, Jung MH. Sasa borealis extract exerts an antidiabetic effect via activation of the AMP-activated protein kinase. Nutr Res Pract 2013; 7:15-21. [PMID: 23423690 PMCID: PMC3572220 DOI: 10.4162/nrp.2013.7.1.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 10/15/2012] [Accepted: 11/08/2012] [Indexed: 11/20/2022] Open
Abstract
Leaf of Sasa borealis, a species of bamboo, has been reported to exhibit anti-hyperglycemic effect. However, its antidiabetic mechanism is not fully understood. In this study, we examined whether an extract of S. borealis activates AMP-activated protein kinase (AMPK) and exerts anti-hyperglycemic effects. Treatment with the S. borealis extract increased insulin signaling and phosphorylation of AMPK and stimulated the expression of its downstream targets, including PPARα, ACO, and CPT-1 in C2C12 cells and PPARα in HepG2 cells. However, inhibition of AMPK activation attenuated insulin signaling and prevented the stimulation of AMPK target genes. The S. borealis extract increased glucose uptake in C2C12 cells and suppressed expression of the gluconeogenic gene, PEPCK in HepG2 cells. The extract significantly reduced blood glucose and triglyceride levels in STZ-induced diabetic mice. The extract enhanced AMPK phosphorylation and increased Glut-4 expression in the skeletal muscle of the mice. These findings demonstrated that the S. borealis extract exerts its anti-hyperglycemic effect through activation of AMPK and enhancement of insulin signaling.
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Affiliation(s)
- Jung Soo Nam
- School of Korean Medicine, Pusan National University, Beomeo-ri, Mulguem-eup, Yangsan, Gyeongnam 626-770, Korea
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20
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Mangialardi G, Katare R, Oikawa A, Meloni M, Reni C, Emanueli C, Madeddu P. Diabetes causes bone marrow endothelial barrier dysfunction by activation of the RhoA-Rho-associated kinase signaling pathway. Arterioscler Thromb Vasc Biol 2013; 33:555-64. [PMID: 23307872 DOI: 10.1161/atvbaha.112.300424] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Diabetes mellitus causes bone marrow (BM) microangiopathy. This study aimed to investigate the mechanisms responsible for BM endothelial dysfunction in diabetes mellitus. METHODS AND RESULTS The analysis of differentially expressed transcripts in BM endothelial cells (BMECs) from type-1 diabetic and nondiabetic mice showed an effect of diabetes mellitus on signaling pathways controlling cell death, migration, and cytoskeletal rearrangement. Type-1 diabetic-BMECs displayed high reactive oxygen species levels, increased expression and activity of RhoA and its associated protein kinases Rho-associated kinase 1/Rho-associated kinase 2, and reduced Akt phosphorylation/activity. Likewise, diabetes mellitus impaired Akt-related BMEC functions, such as migration, network formation, and angiocrine factor-releasing activity, and increased vascular permeability. Moreover, high glucose disrupted BMEC contacts through Src tyrosine kinase phosphorylation of vascular endothelial cadherin. These alterations were prevented by constitutively active Akt (myristoylated Akt), Rho-associated kinase inhibitor Y-27632, and Src inhibitors. Insulin replacement restored BMEC abundance, as assessed by flow cytometry analysis of the endothelial marker MECA32, and endothelial barrier function in BM of type-1 diabetic mice. CONCLUSIONS Redox-dependent activation of RhoA/Rho-associated kinase and Src/vascular endothelial cadherin signaling pathways, together with Akt inactivation, contribute to endothelial dysfunction in diabetic BM. Metabolic control is crucial for maintenance of endothelial cell homeostasis and endothelial barrier function in BM of diabetic mice.
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Affiliation(s)
- Giuseppe Mangialardi
- Experimental Cardiovascular Medicine, Regenerative Medicine Section Bristol Heart Institute, School of Clinical Sciences University of Bristol, Bristol, UK
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21
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Yuan L, Wang J, Xiao H, Wu W, Wang Y, Liu X. MAPK signaling pathways regulate mitochondrial-mediated apoptosis induced by isoorientin in human hepatoblastoma cancer cells. Food Chem Toxicol 2012; 53:62-8. [PMID: 23220614 DOI: 10.1016/j.fct.2012.11.048] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 11/26/2012] [Accepted: 11/27/2012] [Indexed: 12/17/2022]
Abstract
Isoorientin (ISO) (CAS RN: 4261-42-1) is a flavonoid compound that can be extracted from several plant species, such as Phyllostachys pubescens, Patrinia, and Drosophyllum lusitanicum. ISO is able to induce apoptosis through mitochondrial dysfunction and inhibition of PI3K/Akt signaling pathway in HepG2 cells, however, the effects of ISO on MAPK signaling pathways remain unknown. The present study investigated the effects of ISO on this pathway, and the roles of MAPK kinases on mitochondrial-mediated apoptosis in HepG2 cells. The results showed that ISO induced cell death in a dose- and time-dependent manner, and induction apoptosis is main cause for ISO-induced cytotoxicity in HepG2 cells. ISO significantly inhibited the levels of ERK1/2 kinase and increased the expression of JNK and p38 kinases. Furthermore, U0126 (an ERK1/2 inhibitor) significantly enhanced the ISO-induced the Bax/Bcl-2 ratio, the release of cytochrome c to the cytosol fraction, and the levels of cleaved caspase-3. While SP600125 (a JNK inhibitor) and SB203580 (a p38 inhibitor) markedly prevented the expression of these proteins induced by ISO. Furthermore, the ROS inhibitor (NAC) notably promoted the inhibited effect of ISO on the ERK1/2 kinase. NAC also suppressed the p-JNK and p-p38, but failed to reverse the effects of ISO. These results demonstrated for the first time that ISO induces apoptosis in HepG2 cells through inactivating ERK1/2 kinase and activating JNK and p38 kinases, and ROS stimulated by ISO is able to activate the MAPK singaling pathway as the upstream signaling molecules. Initiating event of the mitochondrial-mediated apoptosis induced by ISO is MAPK signals.
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Affiliation(s)
- Li Yuan
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, China
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22
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Higa JK, Liang Z, Williams PG, Panee J. Phyllostachys edulis compounds inhibit palmitic acid-induced monocyte chemoattractant protein 1 (MCP-1) production. PLoS One 2012; 7:e45082. [PMID: 23028772 PMCID: PMC3445604 DOI: 10.1371/journal.pone.0045082] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 08/17/2012] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Phyllostachys edulis Carriere (Poaceae) is a bamboo species that is part of the traditional Chinese medicine pharmacopoeia. Compounds and extracts from this species have shown potential applications towards several diseases. One of many complications found in obesity and diabetes is the link between elevated circulatory free fatty acids (FFAs) and chronic inflammation. This study aims to present a possible application of P. edulis extract in relieving inflammation caused by FFAs. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is a pro-inflammatory cytokine implicated in chronic inflammation. Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and activator protein 1 (AP-1) are transcription factors activated in response to inflammatory stimuli, and upregulate pro-inflammatory cytokines such as MCP-1. This study examines the effect of P. edulis extract on cellular production of MCP-1 and on the NF-κB and AP-1 pathways in response to treatment with palmitic acid (PA), a FFA. METHODOLOGY/PRINCIPAL FINDINGS MCP-1 protein was measured by cytometric bead assay. NF-κB and AP-1 nuclear localization was detected by colorimetric DNA-binding ELISA. Relative MCP-1 mRNA was measured by real-time quantitative PCR. Murine cells were treated with PA to induce inflammation. PA increased expression of MCP-1 mRNA and protein, and increased nuclear localization of NF-κB and AP-1. Adding bamboo extract (BEX) inhibited the effects of PA, reduced MCP-1 production, and inhibited nuclear translocation of NF-κB and AP-1 subunits. Compounds isolated from BEX inhibited MCP-1 secretion with different potencies. CONCLUSIONS/SIGNIFICANCE PA induced MCP-1 production in murine adipose, muscle, and liver cells. BEX ameliorated PA-induced production of MCP-1 by inhibiting nuclear translocation of NF-κB and AP-1. Two O-methylated flavones were isolated from BEX with functional effects on MCP-1 production. These results may represent a possible therapeutic application of BEX and its compounds toward alleviating chronic inflammation caused by elevated circulatory FFAs.
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Affiliation(s)
- Jason K. Higa
- Department of Cell and Molecular Biology, University of Hawaii John A. Burns School of Medicine, Honolulu, Hawaii, United States of America
| | - Zhibin Liang
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Philip G. Williams
- Department of Chemistry, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America
| | - Jun Panee
- Department of Cell and Molecular Biology, University of Hawaii John A. Burns School of Medicine, Honolulu, Hawaii, United States of America
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23
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Kang SW, Kim JL, Kwon GT, Lee YJ, Park JHY, Lim SS, Kang YH. Sensitive Fern (Onoclea sensibilis) Extract Suppresses Proliferation and Migration of Vascular Smooth Muscle Cells Inflamed by Neighboring Macrophages. Biol Pharm Bull 2011; 34:1717-23. [DOI: 10.1248/bpb.34.1717] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Jung-Lye Kim
- Department of Food and Nutrition, Hallym University
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Yang JH, Lim HS, Heo YR. Sasa borealis leaves extract improves insulin resistance by modulating inflammatory cytokine secretion in high fat diet-induced obese C57/BL6J mice. Nutr Res Pract 2010; 4:99-105. [PMID: 20461197 PMCID: PMC2867230 DOI: 10.4162/nrp.2010.4.2.99] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 03/10/2010] [Accepted: 03/12/2010] [Indexed: 02/04/2023] Open
Abstract
Obesity is considered a mild inflammatory state, and the secretion of inflammation-related cytokines rises as adipose tissue expands. Inflammatory cytokines, including tumor necrosis factor-alpha (TNF-alpha), interlukin 6 (IL-6) and monocyte-chemoattractant protein 1 (MCP-1), are modulated by adipose tissue and known to play an important role in insulin resistance which is the common characteristics of obesity related disorders. In this study we analyzed the effects of Sasa borealis leaves extract on inflammatory cytokines and insulin resistance in diet induced obese C57/BL6J mice. The obese state was induced by a high fat diet for 20 weeks and then the mice were divided into two groups; obese control group (OBC, n = 7) and experimental group (OB-SBE, n = 7). The OBC group was fed a high fat diet and the OB-SBE group was fed a high fat diet containing 5% Sasa borealis leaves extract (SBE) for 12 weeks. We also used mice fed a standard diet as a normal control (NC, n = 7). The body weight and adipose tissue weight in the OB group were significantly higher than those in the NC group. The effects of the high fat diet were reduced by SBE treatments, and the body weight and adipose tissue deposition in the OB-SBE group were significantly decreased compared to the OBC group. The OBC group showed higher serum glucose and insulin levels which resulted in a significant increase of incremental area under the curve (IAUC) and HOMA-IR than the NC group. Also, serum leptin, TNF-alpha, and IL-6 levels were significantly higher in the OBC group than in the NC group. In contrast, the OB-SBE group showed a reversal in the metabolic defects, including a decrease in glucose, insulin, IAUC, HOMA-IR, TNF-alpha, IL-6 and leptin levels. These results suggest that BSE can suppress increased weight gain and/or fat deposition induced by a high fat diet and theses effects are accompanied by modulation of the inflammatory cytokines, TNF-alpha and IL-6 secretion resulting in improved insulin resistance.
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Affiliation(s)
- Jung-Hwa Yang
- Department of Food and Nutrition, Chonnam National University, 300 Youngbong-dong, Buk-gu, Gwangju 500-757, Korea
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25
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Maier KG. Nicotinamide adenine dinucleotide phosphate oxidase and diabetes: vascular implications. Vasc Endovascular Surg 2008; 42:305-13. [PMID: 18621880 DOI: 10.1177/1538574408320172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Vascular disease associated with diabetes mellitus is a major cause of morbidity and mortality and is increasing in the United States. It is now recognized that oxidative stress plays a substantial role in the underlying vascular pathology of several diseases, including hypertension and diabetes. In diabetes, there is an increase in the steady state levels of reactive oxygen species. One of the primary generators of reactive oxygen species is nicotinamide adenine dinucleotide phosphate oxidase. Studies have indicated that inhibition of this system is associated with vascular benefits in diabetes. Therefore, there may be a role for therapies directed at nicotinamide adenine dinucleotide phosphate oxidase in this disease. This review will examine the structure, activation, potential role in vascular disease, and benefits of inhibition of nicotinamide adenine dinucleotide phosphate oxidase.
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Affiliation(s)
- Kristopher G Maier
- Upstate Medical University College of Medicine, Syracuse, New York 13210, USA.
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