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Abbasi H, Alem E, Bakhshimoghaddam F, Khoshdooz S, Doaei S. Effects of coffee and tea consumption on glioma risk: An umbrella review of systematic reviews and meta-analyses. Clin Nutr ESPEN 2024; 64:37-43. [PMID: 39178989 DOI: 10.1016/j.clnesp.2024.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 07/27/2024] [Accepted: 08/13/2024] [Indexed: 08/26/2024]
Abstract
BACKGROUND Coffee and tea are considered to have some effects on the risk of glioma as one of the most prevalent intracranial malignant tumors in adults. However, the precise effect of coffee and tea consumption on glioma is not obvious. This umbrella review aimed to evaluate the impact of tea and coffee consumption on glioma risk. METHODS Three online databases containing Scopus, Web of Science, and PubMed were thoroughly searched from the beginning to February 23, 2024 with no language constraints. Relying on I2 and Q statistics, a random-effect model or a fixed-effect model was applied. The PICO structure was followed as Population (Patients with glioma), Intervention (Coffee and tea consumption), Comparison (Standard treatment or placebo), and Outcome (Risk of glioma). RESULTS Totally, seven meta-analyses and systematic reviews contain 23,591 patients were included in this umbrella review. Coffee and tea consumption led to significant 15% and 16% reductions in glioma risk, respectively (RR = 0.85; 95% CI: 0.74, 0.98; RR = 0.84; 95% CI: 0.79, 0.89). The results did not change after subgroup analyses. CONCLUSION This umbrella review revealed that the coffee and tea consumption may decrease the glioma risk. Consumption of tea and coffee may be considered as dietary strategies against glioma. PROSPERO REGISTRATION CODE CRD42024521525.
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Affiliation(s)
- Hamid Abbasi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Emad Alem
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Farnush Bakhshimoghaddam
- Department of Nutrition, School of Allied Medical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Sara Khoshdooz
- Faculty of Medicine, Guilan University of Medical Science, Rasht, Iran.
| | - Saeid Doaei
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Lan Q, Xue L, Cao J, Xie Y, Xiao T, Fang S. Caffeic Acid Phenethyl Ester (CAPE) Improves Boar Sperm Quality and Antioxidant Capacity in Liquid Preservation (17°C) Linked to AMPK Activity Maintenance. Front Vet Sci 2022; 9:904886. [PMID: 35754532 PMCID: PMC9219730 DOI: 10.3389/fvets.2022.904886] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Liquid preservation of boar sperm is crucial for artificial insemination application in pig production. However, time-dependent oxidative damage to sperm is one of the major challenges during the liquid preservation period. Caffeic acid phenethyl ester (CAPE) possesses excellent antioxidant properties and has potential therapeutic use in reproductive organ injury linked to oxidative stress. Adenosine monophosphate (AMP)-activated protein kinase (AMPK) involves in modulating the cellular redox state and exerts a beneficial effect on sperm preservation. In the present study, we firstly assessed different concentrations of CAPE that affect sperm quality during liquid storage to determine the appropriate addition. To further investigate whether CAPE exerts protective effects on boar sperm through modulation of AMPK activity, sperm quality parameters, antioxidant capacity, and marker protein expressions were evaluated under co-incubation with H2O2. The results showed that sperm treated with 210 μmol/L CAPE exhibited the highest motion parameters (total motility and progressive motility) and best functional integrity (mitochondrial activity, plasma membrane integrity, and acrosomal integrity). Even in the presence of H2O2, the addition of 210 μmol/L CAPE not only significantly improved sperm quality parameters, but also elevated CAT, SOD, and GSH-Px activities to enhance sperm antioxidant capacity. In addition, we found that CAPE could affect the protein activities of AMPK, phospho-AMPK α (p-AMPK), SOD, and Caspase-3 regardless of whether H2O2 is present or not. Our findings suggested that CAPE has potential application in liquid preservation of boar sperm and preliminary indicated that CAPE-induced improvement of sperm quality and antioxidant capacity should be mediated through conservation of AMPK activity. Further studies are required to illustrate the specific mechanism by which CAPE attenuates oxidative stress-mediated damages dependent on AMPK activity.
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Affiliation(s)
- Qun Lan
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Li'e Xue
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiacheng Cao
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yingyu Xie
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Tianfang Xiao
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shaoming Fang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, China
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Akdad M, Bouchra A, Eddouks M. Beneficial Effect of Saharan Propolis on Glucose Metabolism in Streptozotocin-induced Diabetic Rats. Cardiovasc Hematol Disord Drug Targets 2021; 21:243-252. [PMID: 34792007 DOI: 10.2174/1871529x21666211118141935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 07/28/2021] [Accepted: 08/10/2021] [Indexed: 11/22/2022]
Abstract
AIMS The aim of the study was to evaluate the antihyperglycemic activity of propolis from Saharan region of Morocco. BACKGROUND Propolis is known from ancient times for its beneficial action on health. OBJECTIVE The study aimed to evaluate the effect of Moroccan propolis aqueous extract from the desert region on glycemia and lipid metabolism. METHODS The antihyperglycemic and antidyslipidemic activities of Moroccan propolis aqueous extract were evaluated in streptozotocin-induced diabetic rats. Glycemia was monitored during acute (6h) and subchronic treatments. Histopathological analysis of the liver and the serum lipid profile was also evaluated in addition to the glucose tolerance. RESULTS This work demonstrated that the aqueous extract of Moroccan propolis exhibited a significant antihyperglycemic effect in diabetic rats. Histopathological data demonstrated that propolis acts positively on the liver of diabetic rats. In addition, the preliminary phytochemical screening revealed that Moroccan propolis contains several phytochemicals. Finally, Moroccan propolis had a potent antioxidant activity which may be due to the richness in polyphenols content (90.91 mg EAG/1 g of extract). CONCLUSION The present study shows that Moroccan propolis from the hot desert region possesses a potent antihyperglycemic effect.
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Affiliation(s)
- Mourad Akdad
- Team of Ethnopharmacology and Pharmacognosy. Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000. Morocco
| | - Azzoui Bouchra
- Team of Ethnopharmacology and Pharmacognosy. Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000. Morocco
| | - Mohamed Eddouks
- Team of Ethnopharmacology and Pharmacognosy. Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000. Morocco
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Targeting the JAK2/STAT3 Pathway-Can We Compare It to the Two Faces of the God Janus? Int J Mol Sci 2020; 21:ijms21218261. [PMID: 33158194 PMCID: PMC7663396 DOI: 10.3390/ijms21218261] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/31/2020] [Accepted: 11/02/2020] [Indexed: 02/07/2023] Open
Abstract
Muscle cachexia is one of the most critical unmet medical needs. Identifying the molecular background of cancer-induced muscle loss revealed a promising possibility of new therapeutic targets and new drug development. In this review, we will define the signal transducer and activator of transcription 3 (STAT3) protein's role in the tumor formation process and summarize the role of STAT3 in skeletal muscle cachexia. Finally, we will discuss a vast therapeutic potential for the STAT3-inhibiting single-agent treatment innovation that, as the desired outcome, could block tumor growth and generally prevent muscle cachexia.
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Apitherapy for Age-Related Skeletal Muscle Dysfunction (Sarcopenia): A Review on the Effects of Royal Jelly, Propolis, and Bee Pollen. Foods 2020; 9:foods9101362. [PMID: 32992744 PMCID: PMC7601109 DOI: 10.3390/foods9101362] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/11/2022] Open
Abstract
The global pandemic of sarcopenia, skeletal muscle loss and weakness, which prevails in up to 50% of older adults is increasing worldwide due to the expansion of aging populations. It is now striking young and midlife adults as well because of sedentary lifestyle and increased intake of unhealthy food (e.g., western diet). The lockdown measures and economic turndown associated with the current outbreak of Coronavirus Disease 2019 (COVID-19) are likely to increase the prevalence of sarcopenia by promoting sedentarism and unhealthy patterns of eating. Sarcopenia has multiple detrimental effects including falls, hospitalization, disability, and institutionalization. Although a few pharmacological agents (e.g., bimagrumab, sarconeos, and exercise mimetics) are being explored in different stages of trials, not a single drug has been approved for sarcopenia treatment. Hence, research has focused on testing the effect of nutraceuticals, such as bee products, as safe treatments to prevent and/or treat sarcopenia. Royal jelly, propolis, and bee pollen are common bee products that are rich in highly potent antioxidants such as flavonoids, phenols, and amino acids. These products, in order, stimulate larval development into queen bees, promote defenses of the bee hive against microbial and environmental threats, and increase royal jelly production by nurse bees. Thanks to their versatile pharmacological activities (e.g., anti-aging, anti-inflammatory, anticarcinogenic, antimicrobial, etc.), these products have been used to treat multiple chronic conditions that predispose to muscle wasting such as hypertension, diabetes mellitus, cardiovascular disorder, and cancer, to name a few. They were also used in some evolving studies to treat sarcopenia in laboratory animals and, to a limited degree, in humans. However, a collective understanding of the effect and mechanism of action of these products in skeletal muscle is not well-developed. Therefore, this review examines the literature for possible effects of royal jelly, bee pollen, and propolis on skeletal muscle in aged experimental models, muscle cell cultures, and humans. Collectively, data from reviewed studies denote varying levels of positive effects of bee products on muscle mass, strength, and function. The likely underlying mechanisms include amelioration of inflammation and oxidative damages, promotion of metabolic regulation, enhancement of satellite stem cell responsiveness, improvement of muscular blood supply, inhibition of catabolic genes, and promotion of peripheral neuronal regeneration. This review offers suggestions for other mechanisms to be explored and provides guidance for future trials investigating the effects of bee products among people with sarcopenia.
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The bitter Asteraceae: An interesting approach to delay the metabolic syndrome progression. NFS JOURNAL 2020. [DOI: 10.1016/j.nfs.2020.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Peng Y, Sun Q, Park Y. Chicoric acid promotes glucose uptake and Akt phosphorylation via AMP-activated protein kinase α-dependent pathway. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.05.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Effect of CAPE-pNO2 against type 2 diabetes mellitus via the AMPK/GLUT4/ GSK3β/PPARα pathway in HFD/STZ-induced diabetic mice. Eur J Pharmacol 2019; 853:1-10. [DOI: 10.1016/j.ejphar.2019.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 01/05/2023]
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Ferreira RS, Dos Santos NAG, Bernardes CP, Sisti FM, Amaral L, Fontana ACK, Dos Santos AC. Caffeic Acid Phenethyl Ester (CAPE) Protects PC12 Cells Against Cisplatin-Induced Neurotoxicity by Activating the AMPK/SIRT1, MAPK/Erk, and PI3k/Akt Signaling Pathways. Neurotox Res 2019; 36:175-192. [PMID: 31016689 DOI: 10.1007/s12640-019-00042-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/26/2019] [Accepted: 04/04/2019] [Indexed: 01/01/2023]
Abstract
Peripheral sensory neuropathy (PSN) is a well-known side effect of cisplatin characterized by axonal damage. In the early stage of neurotoxicity, cisplatin affects proteins that modulate neurite outgrowth and neuroplasticity, without inducing mitochondrial damage or apoptosis. There are no preventive therapies for cisplatin-induced peripheral neuropathy; therefore, measures to improve axonal growth and connectivity would be beneficial. Caffeic acid phenethyl ester (CAPE) is a bioactive component of propolis with neurotrophic and neuroprotective activities. We have recently showed that CAPE protects against cisplatin-induced neurotoxicity by activating NGF high-affinity receptors (trkA) and inducing neuroplasticity. We have now assessed other potential early targets of cisplatin and additional mechanisms involved in the neuroprotection of CAPE. Cisplatin reduced axonal cytoskeletal proteins (F-actin and β-III-tubulin) without inducing oxidative damage in PC12 cells. It also reduced energy-related proteins (AMPK α, p-AMPK α, and SIRT1) and glucose uptake. At this stage of neurotoxicity, glutamate excitotoxicity is not involved in the toxicity of cisplatin. CAPE attenuated the downregulation of the cytoskeleton and energy-related markers as well as SIRT1 and phosphorylated AMPK α. Moreover, the neuroprotective mechanism of CAPE also involves the activation of the neurotrophic signaling pathways MAPK/Erk and PI3k/Akt. The PI3K/Akt pathway is involved in the upregulation of SIRT1 induced by CAPE, but not in the upregulation of cytoskeletal proteins. Altogether, these findings suggest that the neuroprotective effect of CAPE against cisplatin-induced neurotoxicity involves both (a) a neurotrophic mechanism that mimics the mechanism triggered by the NGF itself and (b) a non-neurotrophic mechanism that upregulates the cytoskeletal proteins.
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Affiliation(s)
- Rafaela Scalco Ferreira
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Neife Aparecida Guinaim Dos Santos
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carolina P Bernardes
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Flávia Malvestio Sisti
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Lilian Amaral
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Andreia C K Fontana
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Antonio Cardozo Dos Santos
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Ding H, Ci X, Cheng H, Yu Q, Li D. Chicoric acid alleviates lipopolysaccharide-induced acute lung injury in mice through anti-inflammatory and anti-oxidant activities. Int Immunopharmacol 2019; 66:169-176. [DOI: 10.1016/j.intimp.2018.10.042] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/16/2018] [Accepted: 10/30/2018] [Indexed: 12/21/2022]
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Khan M, Shunmugavel A, Dhammu TS, Khan H, Singh I, Singh AK. Combined treatment with GSNO and CAPE accelerates functional recovery via additive antioxidant activities in a mouse model of TBI. J Neurosci Res 2018; 96:1900-1913. [PMID: 30027580 DOI: 10.1002/jnr.24279] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 06/01/2018] [Accepted: 06/15/2018] [Indexed: 01/01/2023]
Abstract
Traumatic brain injury (TBI) is the major cause of physical disability and emotional vulnerability. Treatment of TBI is lacking due to its multimechanistic etiology, including derailed mitochondrial and cellular energy metabolism. Previous studies from our laboratory show that an endogenous nitric oxide (NO) metabolite S-nitrosoglutathione (GSNO) provides neuroprotection and improves neurobehavioral function via anti-inflammatory and anti-neurodegenerative mechanisms. To accelerate the rate and enhance the degree of recovery, we investigated combining GSNO with caffeic acid phenethyl ester (CAPE), a potent antioxidant compound, using a male mouse model of TBI, controlled cortical impact in mice. The combination therapy accelerated improvement of cognitive and depressive-like behavior compared with GSNO or CAPE monotherapy. Separately, both GSNO and CAPE improved mitochondrial integrity/function and decreased oxidative damage; however, the combination therapy had greater effects on Drp1 and MnSOD. Additionally, while CAPE alone activated AMPK, this activation was heightened in combination with GSNO. CAPE treatment of normal animals also significantly increased the expression levels of pAMPK, pACC (activation of AMPK substrate ACC), and pLKB1 (activation of upstream to AMPK kinase LKB1), indicating that CAPE activates AMPK via LKB1. These results show that while GSNO and CAPE provide neuroprotection and improve functional recovery separately, the combination treatment invokes greater recovery by significantly improving mitochondrial functions and activating the AMPK enzyme. Both GSNO and CAPE are in human consumption without any known adverse effects; therefore, a combination therapy-based multimechanistic approach is worthy of investigation in human TBI.
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Affiliation(s)
- Mushfiquddin Khan
- Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina
| | | | - Tajinder S Dhammu
- Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina
| | - Hamza Khan
- College of Medicine, University of South Carolina, Columbia, South Carolina
| | - Inderjit Singh
- Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina.,Ralph H. Johnson VA Medical Center, Charleston, South Carolina
| | - Avtar K Singh
- Ralph H. Johnson VA Medical Center, Charleston, South Carolina.,Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina
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Ferrare K, Bidel LPR, Awwad A, Poucheret P, Cazals G, Lazennec F, Azay-Milhau J, Tournier M, Lajoix AD, Tousch D. Increase in insulin sensitivity by the association of chicoric acid and chlorogenic acid contained in a natural chicoric acid extract (NCRAE) of chicory (Cichorium intybus L.) for an antidiabetic effect. JOURNAL OF ETHNOPHARMACOLOGY 2018; 215:241-248. [PMID: 29325917 DOI: 10.1016/j.jep.2017.12.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 12/18/2017] [Accepted: 12/24/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Chicory (Cichorium intybus L.) is an indigenous vegetable widely cultivated in Europe, America and Asia. In ancient times, the leaves, flowers, seeds, and roots have been used as a wealth of health benefits including its tonic effects, the ability to ease digestive problems and to detoxify liver. In Indian traditional therapy, chicory was known to possess antidiabetic effect. In the traditional medicine of Bulgaria and Italy, chicory was used as hypoglycemic decoctions. AIMS OF THE STUDIES We wanted to obtain the complete chemical composition of the natural chicoric acid extract (NCRAE), a chicory root extract rich in chicoric acid, which previously showed its glucose tolerance effect in normal rats. To investigate if the whole NCRAE is required to be effective, we performed a comparative in vivo experiment on STZ diabetic rats treated either with NCRAE or a mixture composed of the two major compounds of NCRAE. MATERIALS AND METHODS LC-MS method has been used to analyze the exhaustive composition of NCRAE: we have determined that chicoric acid and chlorogenic acid represented 83.8% of NCRAE. So, we have prepared a solution mixture of chicoric acid and chlorogenic acid named SCCAM, in order to compare in vivo the antidiabetic effects of this last and NCRAE in streptozotocin diabetic rats. In vitro experiments were performed on L6 cell line both for glucose uptake and for the protective effect against H2O2 oxidative stress. Also, we have evaluated DPPH and ORAC (Oxygen Radical Absorbance Capacity) antioxidative capacities of the two compositions. RESULTS The LC-MS analysis confirmed the high abundance of chicoric acid (64.2%) in NCRAE and a second part of NCRAE is composed of caffeoylquinic acids (CQAs) at 19.6% with among them the chlorogenic acid. This result has permitted us to prepare a mixture of synthetic L-chicoric acid (70%) and synthetic chlorogenic acid (30%): the solution is designated SCCAM. Our results showed that both NCRAE and SCCAM are able to improve a glucose tolerance in STZ diabetic rats after a subchronic administration of seven days. Alone NCRAE allows to significantly decrease the basal hyperglycemia after six days of treatment. To explain these difference of effects between NCRAE and SCCAM, we have compared their in vitro effects on the L6 muscle cell line both for the insulin sensitizing effect and for their protective action in pretreatment against H2O2. We have also compared their antioxidant capacities. In conclusion, we demonstrated that NCRAE, a natural extract of chicory (Cichorium intybus) rich in CRA and CQAs improves glucose tolerance and reduces the basal hyperglycemia in STZ diabetic rats.
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Affiliation(s)
- Karine Ferrare
- University Montpellier, UMR 95 Qualisud, CIRAD, SupAgro Montpellier, University of Avignon, University of the Reunion, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier Cedex 5, France
| | - Luc P R Bidel
- INRA, UMR AGAP, CIRAD, SupAgro, 2 Place Pierre Viala, 34060 Montpellier, France
| | - Abdulmomem Awwad
- University Montpellier, UMR 95 Qualisud, CIRAD, SupAgro Montpellier, University of Avignon, University of the Reunion, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier Cedex 5, France
| | - Patrick Poucheret
- University Montpellier, UMR 95 Qualisud, CIRAD, SupAgro Montpellier, University of Avignon, University of the Reunion, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier Cedex 5, France
| | - Guillaume Cazals
- University Montpellier, IBMM UMR5247, CNRS, ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
| | - Françoise Lazennec
- University Montpellier, UMR 95 Qualisud, CIRAD, SupAgro Montpellier, University of Avignon, University of the Reunion, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier Cedex 5, France
| | - Jacqueline Azay-Milhau
- University Montpellier, EA 7288, Biocommunication in Cardio-Metabolism, 15 Avenue Charles Flahault, BP14491, 34093 Montpellier Cedex 5, France
| | - Michel Tournier
- University Montpellier, EA 7288, Biocommunication in Cardio-Metabolism, 15 Avenue Charles Flahault, BP14491, 34093 Montpellier Cedex 5, France
| | - Anne-Dominique Lajoix
- University Montpellier, EA 7288, Biocommunication in Cardio-Metabolism, 15 Avenue Charles Flahault, BP14491, 34093 Montpellier Cedex 5, France
| | - Didier Tousch
- University Montpellier, UMR 95 Qualisud, CIRAD, SupAgro Montpellier, University of Avignon, University of the Reunion, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier Cedex 5, France.
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Kim HM, Kim Y, Lee ES, Huh JH, Chung CH. Caffeic acid ameliorates hepatic steatosis and reduces ER stress in high fat diet-induced obese mice by regulating autophagy. Nutrition 2018; 55-56:63-70. [PMID: 29960159 DOI: 10.1016/j.nut.2018.03.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 03/07/2018] [Accepted: 03/10/2018] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Non-alcoholic fatty liver disease is characterized by high hepatic triacylglycerol contents, which is associated with endoplasmic reticulum (ER) stress and insulin resistance. Caffeic acid (CA) has antioxidant, immunomodulatory, and antiinflammatory effects. We investigated the effects of CA on hepatic steatosis and its mechanism of action. METHODS We treated CA (50 µM) with AML12 cells. We categorized mice into three groups as follows: low-fat diet mice (LFD, n = 10), high-fat diet-induced obese mice (HFD, n = 10), and HFD fed with CA (50 mg/kg/d, n = 10) for 10 wk. RESULTS CA did not cause any cytotoxic effect on AML12 cell line within the range of concentrations tested (0-200 µM). We found that CA (50 µM) treatment in palmitate-treated AML12 hepatocytes reduced lipid accumulation and lipogenesis markers, decreased ER stress, and increased autophagy markers. However, there was no significant difference in lipid droplets of palmitate-treated AML12 hepatocytes and CA-treated autophagy-related protein 7 deficiency AML12 hepatocytes with palmitate. Similarly, CA significantly lowered body and liver weights. Lipid accumulation in the liver decreased in the HFD + CA group compared with the HFD group. Glucose intolerance and insulin sensitivity also were markedly improved in the HFD + CA group. Moreover, the levels of ER stress markers were decreased in the livers of the HFD + CA group. CONCLUSION Autophagy markers were increased in the livers of the HFD + CA group. These results suggest that caffeic acid may ameliorate hepatic steatosis and decrease ER stress by increasing autophagy.
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Affiliation(s)
- Hong Min Kim
- Department of Global Medical Science, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Yuna Kim
- Department of Endocrinology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Eun Soo Lee
- Department of Endocrinology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Ji Hye Huh
- Department of Endocrinology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Choon Hee Chung
- Department of Global Medical Science, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea; Department of Endocrinology and Institute of Lifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.
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Propolis and Its Potential to Treat Gastrointestinal Disorders. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:2035820. [PMID: 29736177 PMCID: PMC5875067 DOI: 10.1155/2018/2035820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/21/2017] [Indexed: 12/17/2022]
Abstract
There are a number of disorders that affect the gastrointestinal tract. Such disorders have become a global emerging disease with a high incidence and prevalence rates worldwide. Inflammatory and ulcerative processes of the stomach or intestines, such as gastritis, ulcers, colitis, and mucositis, afflict a significant proportion of people throughout the world. The role of herbal-derived medicines has been extensively explored in order to develop new effective and safe strategies to improve the available gastrointestinal therapies that are currently used in the clinical practice. Studies on the efficacy of propolis (a unique resinous aromatic substance produced by honeybees from different types of species of plants) are promising and propolis has been effective in the treatment of several pathological conditions. This review, therefore, summarizes and critiques the contents of some relevant published scientific papers (including those related to clinical trials) in order to demonstrate the therapeutic value of propolis and its active compounds in the treatment and prevention of gastrointestinal diseases.
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Kumar M, Bansal N. Caffeic acid phenethyl ester rescued streptozotocin-induced memory loss through PI3-kinase dependent pathway. Biomed Pharmacother 2018; 101:162-173. [PMID: 29486334 DOI: 10.1016/j.biopha.2018.02.089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/05/2018] [Accepted: 02/20/2018] [Indexed: 01/17/2023] Open
Abstract
The present study was undertaken to elucidate the role of PI3-kinase signaling in memory enhancing potential of caffeic acid phenethyl ester (CAPE) against cognitive defects in rats after centrally administered streptozotocin as a model of Alzheimer's disease. The Morris water maze and elevated plus maze paradigms showed profound loss of memory in adult Wistar rats (180-200 g) injected with streptozotocin (3 mg/kg) bilaterally (STZ-ICV) on day 1 and 3. Intraperitoneal administration of CAPE (6 mg/kg, i.p., 28 days) attenuated STZ-ICV triggered memory loss in rats. Treatment with PI3-kinase inhibitor (wortmannin, 5 μg/rat, ICV) or NOS blocker (L-NAME, 20 mg/kg, i.p., 28 days) interfered with memory restorative function of CAPE in STZ treated rats. In biochemical analysis markers of oxidative stress (TBARS, GSH, SOD, CAT), nitrite, AChE, TNF-α, eNOS and NFκB were measured in brain of rats on day 28. Interestingly, L-Arginine (100 mg/kg, i.p., 28 days) group exhibited moderate (p > 0.05) decline in memory functions. The brain oxidative stress, TNF-α, AChE activity and NFκB levels were elevated, and eNOS level was lowered by STZ-ICV treatment. Administration of CAPE lowered oxidative stress, AChE, nitrite and TNF-α levels in brain of rats. The eNOS level was enhanced and NFκB level was decreased by CAPE in STZ treated rats. Wortmannin injection elevated the brain oxidative stress, AChE activity and TNF-α levels, and decreased the nitrite, eNOS and NFκB level. Rise of brain oxidative stress parameters, AChE activity, TNF-α, eNOS and NFκB levels, and decline in brain nitrite content was observed in L-NAME treated group. L-Arginine administration showed modest effects (p > 0.05) on oxidative stress parameters. Brain nitrite content was enhanced although eNOS, NFκB levels, and AChE activity was decimated by L-Arginine treatment. It can be concluded that PI3-kinase mediated nitric oxide facilitation is an essential feature of CAPE action in STZ-ICV treated rats.
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Affiliation(s)
- Manish Kumar
- PhD Research Scholar, IKG Punjab Technical University, Kapurthala, Punjab, 144603, India; Department of Pharmacology, ASBASJSM College of Pharmacy, Bela, Ropar, 140111, India.
| | - Nitin Bansal
- Department of Pharmacology, ASBASJSM College of Pharmacy, Bela, Ropar, 140111, India.
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Eid HM, Thong F, Nachar A, Haddad PS. Caffeic acid methyl and ethyl esters exert potential antidiabetic effects on glucose and lipid metabolism in cultured murine insulin-sensitive cells through mechanisms implicating activation of AMPK. PHARMACEUTICAL BIOLOGY 2017; 55:2026-2034. [PMID: 28832228 PMCID: PMC6130489 DOI: 10.1080/13880209.2017.1345952] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/02/2017] [Accepted: 06/15/2017] [Indexed: 06/07/2023]
Abstract
CONTEXT Caffeic acid methyl (CAME) and ethyl (CAEE) esters stimulate glucose uptake and AMP-activated protein kinase (AMPK) in C2C12 myocytes (ATCC® CRL-1772TM). OBJECTIVE Effects of CAME and CAEE were now assessed on myocyte glucose transporter GLUT4 activity and expression, on hepatic gluconeogenesis and on adipogenesis as well as major underlying signaling pathways. MATERIALS AND METHODS GLUT4 protein translocation was studied in L6 GLUT4myc cells, glucose-6-phospatase (G6Pase) in H4IIE hepatocytes and adipogenesis in 3T3-L1 adipocytes. Key modulators were measured using western immunoblot. Cells were treated for 18 h with either CAME or CAEE at various concentrations (12.5-100 μM). RESULTS Myocyte glucose uptake rose from 10.1 ± 0.5 to 18.7 ± 0.8 and 21.9 ± 1.0 pmol/min/mg protein in DMSO-, CAME- and CAEE-stimulated cells, respectively, similar to insulin (17.7 ± 1.2 pmol/min/mg protein), while GLUT4myc translocation increased significantly by 1.70 ± 0.18, by 1.73 ± 0.18- and by 1.95 ± 0.30-fold (relative to DMSO), following insulin, CAME and CAEE stimulation, respectively. CAME and CAEE suppressed hepatocyte G6Pase by 62.0 ± 6.9% and 62.7 ± 6.0% with IC50 of 45.93 and 22.64 μM, respectively, comparable to insulin (70.7 ± 2.3% inhibition). Finally, CAME and CAEE almost abrogated adipogenesis (83.3 ± 7.2% and 97.3 ± 3.0% at 100 μM; IC50 of 13.8 and 12.9 μM, respectively). The compounds inhibited adipogenic factors C/EBP-β and PPAR-γ and stimulated AMPK activity in the three cell-lines. DISCUSSION AND CONCLUSIONS CAME and CAEE exerted antidiabetic activities in insulin-responsive cells through insulin-independent mechanisms involving AMPK and adipogenic factors.
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Affiliation(s)
- Hoda M. Eid
- Natural Health Products and Metabolic Diseases Laboratory, Department of Pharmacology and Physiology, Université de Montréal, Montreal, Canada
- Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines, Montreal Diabetes Research Center, Montreal, Canada
- Department of Pharmacognosy, Faculty of Pharmacy, University of Beni-Suef, Beni-Suef, Egypt
| | - Farah Thong
- Faculty of Dentistry, University of Toronto, Toronto, Canada
| | - Abir Nachar
- Natural Health Products and Metabolic Diseases Laboratory, Department of Pharmacology and Physiology, Université de Montréal, Montreal, Canada
- Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines, Montreal Diabetes Research Center, Montreal, Canada
| | - Pierre S. Haddad
- Natural Health Products and Metabolic Diseases Laboratory, Department of Pharmacology and Physiology, Université de Montréal, Montreal, Canada
- Canadian Institutes of Health Research Team in Aboriginal Antidiabetic Medicines, Montreal Diabetes Research Center, Montreal, Canada
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17
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Yucel B, Sonmez M. Repression of oxidative phosphorylation sensitizes leukemia cell lines to cytarabine. Hematology 2017; 23:330-336. [DOI: 10.1080/10245332.2017.1402454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Burcu Yucel
- Medical Faculty, Department of Medical Biology, Karadeniz Technical University, Trabzon, Turkey
| | - Mehmet Sonmez
- Medical Faculty, Department of Internal Medicine, Division of Hematology, Karadeniz Technical University, Trabzon, Turkey
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18
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Gong P, Chang X, Chen X, Bai X, Wen H, Pi S, Yang W, Wang L, Chen F. Metabolomics study of cadmium-induced diabetic nephropathy and protective effect of caffeic acid phenethyl ester using UPLC-Q-TOF-MS combined with pattern recognition. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 54:80-92. [PMID: 28704754 DOI: 10.1016/j.etap.2017.06.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 05/16/2017] [Accepted: 06/21/2017] [Indexed: 06/07/2023]
Abstract
Diabetic nephropathy (DN) is the most severe complication of diabetes and multiple factors are involved in the pathogenesis of DN. Among them, cadmium (Cd) acts as a risk factor inducing the occurrence of DN. The present study focused on investigating the protective role of caffeic acid phenethyl ester (CAPE), an active component of propolis from honeybee hives, against Cd-induced DN in mice based on ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS)and pattern recognition. Serum and urine biochemical indexes were detected and histopathological observation has been done to evaluate the damage of Cd on animals. Moreover, the global serum profiles of different groups were distinguished by UPLC-Q-TOF-MS and principal component analysis (PCA) were applied for group differentiation and marker selection. Moreover, the influence of Cd on the oxidative status in DN mice were also evaluated by assessing the parameters of oxidative stress, proinflammatory cytokines and antioxidant competence. As shown in the scores plots, the distinct clustering among controls, DN and CAPE groups were observed, significant changes in serum levels of LysoPC(18:1(11Z)), 2,3-dinor-8-iso-PGF2a, PS(18:1(9Z)/18:1(9Z)), DG(17:0/22:4 (7Z,10Z, 13Z, 16Z)/0:0) and Arachidonic acid(AA) were noted and identified as potential biomarkers, the effect of CAPE reverted them back to near normalcy. Further, It was observed a significant improvement in lipid peroxides (LPO) and protein carbonyls (PCO) levels in Cd-induced DN kidneys along with a significant decline in superoxide dismutase (SOD), catalase (CAT), and reduced glutathione (GSH) levels, however, CAPE relieved these changes. In conclusion, the study suggested that the pathogenesis of DN caused by Cd probably owes to the perturbations of lipid metabolism and AA metabolism; CAPE seems to be effective agent and may be related to its potent antioxidant, anti-inflammatory properties and action as an Nrf2 activator.
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Affiliation(s)
- Pin Gong
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Xiangna Chang
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Xuefeng Chen
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Xiaohuan Bai
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - He Wen
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Sihui Pi
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Wenjuan Yang
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Lan Wang
- College of Food and Biotechnology, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Fuxin Chen
- School of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.
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Hithamani G, Srinivasan K. Bioavailability of finger millet ( Eleusine coracana ) phenolic compounds in rat as influenced by co-administered piperine. FOOD BIOSCI 2017. [DOI: 10.1016/j.fbio.2017.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Kim DJ, Kang YH, Kim KK, Kim TW, Park JB, Choe M. Increased glucose metabolism and alpha-glucosidase inhibition in Cordyceps militaris water extract-treated HepG2 cells. Nutr Res Pract 2017; 11:180-189. [PMID: 28584574 PMCID: PMC5449374 DOI: 10.4162/nrp.2017.11.3.180] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 12/29/2016] [Accepted: 04/02/2017] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND/OBJECTIVES Recent living condition improvements, changes in dietary habits, and reductions in physical activity are contributing to an increase in metabolic syndrome symptoms including diabetes and obesity. Through such societal developments, humankind is continuously exposed to metabolic diseases such as diabetes, and the number of the victims is increasing. This study investigated Cordyceps militaris water extract (CMW)-induced glucose uptake in HepG2 cells and the effect of CMW treatment on glucose metabolism. MATERIALS/METHODS Colorimetric assay kits were used to determine the glucokinase (GK) and pyruvate dehydrogenase (PDH) activities, glucose uptake, and glycogen content. Either RT-PCR or western blot analysis was performed for quantitation of glucose transporter 2 (GLUT2), hepatocyte nuclear factor 1 alpha (HNF-1α), phosphatidylinositol 3-kinase (PI3k), protein kinase B (Akt), phosphorylated AMP-activated protein kinase (pAMPK), phosphoenolpyruvate carboxykinase, GK, PDH, and glycogen synthase kinase 3 beta (GSK-3β) expression levels. The α-glucosidase inhibitory activities of acarbose and CMW were evaluated by absorbance measurement. RESULTS CMW induced glucose uptake in HepG2 cells by increasing GLUT2 through HNF-1α expression stimulation. Glucose in the cells increased the CMW-induced phosphorylation of AMPK. In turn, glycolysis was stimulated, and glyconeogenesis was inhibited. Furthermore, by studying the mechanism of action of PI3k, Akt, and GSK-3β, and measuring glycogen content, the study confirmed that the glucose was stored in the liver as glycogen. Finally, CMW resulted in a higher level of α-glucosidase inhibitory activity than that from acarbose. CONCLUSION CMW induced the uptake of glucose into HepG2 cells, as well, it induced metabolism of the absorbed glucose. It is concluded that CMW is a candidate or potential use in diabetes prevention and treatment.
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Affiliation(s)
- Dae Jung Kim
- Well-being Bioproducts RIC, Kangwon National University, Gangwon 25209, Korea
| | - Yun Hwan Kang
- National Development Institute of Korean Medicine, Gyeongbuk 38540, Korea
| | - Kyoung Kon Kim
- Department of Bio-Health Technology, Kangwon National University, 1 Gangwondaehak-gil, Chuncheon, Gangwon 24341, Korea
| | - Tae Woo Kim
- Well-being Bioproducts RIC, Kangwon National University, Gangwon 25209, Korea
| | - Jae Bong Park
- Department of Biochemistry, Hallym University College of Medicine, Gangwon 24252, Korea
| | - Myeon Choe
- Well-being Bioproducts RIC, Kangwon National University, Gangwon 25209, Korea.,Department of Bio-Health Technology, Kangwon National University, 1 Gangwondaehak-gil, Chuncheon, Gangwon 24341, Korea
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21
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Akomolafe SF, Akinyemi AJ, Ogunsuyi OB, Oyeleye SI, Oboh G, Adeoyo OO, Allismith YR. Effect of caffeine, caffeic acid and their various combinations on enzymes of cholinergic, monoaminergic and purinergic systems critical to neurodegeneration in rat brain-In vitro. Neurotoxicology 2017; 62:6-13. [PMID: 28465162 DOI: 10.1016/j.neuro.2017.04.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/08/2017] [Accepted: 04/24/2017] [Indexed: 12/29/2022]
Abstract
Caffeine and caffeic acid are two bioactive compounds that are present in plant foods and are major constituent of coffee, cocoa, tea, cola drinks and chocolate. Although not structurally related, caffeine and caffeic acid has been reported to elicit neuroprotective properties. However, their different proportional distribution in food sources and possible effect of such interactions are not often taken into consideration. Therefore, in this study, we investigated the effect of caffeine, caffeic acid and their various combinations on activities of some enzymes [acetylcholinesterase (AChE), monoamine oxidase (MAO) ecto-nucleoside triphosphate diphosphohydrolase (E-NTPase), ecto-51-nucleotidase (E-NTDase) and Na+/K+ ATPase relevant to neurodegeneration in vitro in rat brain. The stock concentration of caffeine and caffiec acid and their various proportional combinations were prepared and their interactions with the activities of these enzymes were assessed (in vitro) in different brain structures. The Fe2+ and Cu2+ chelating abilities of the samples were also investigated. The results revealed that caffeine, caffeic acid and their various combinations exhibited inhibitory effect on activities of AChE, MAO, E-NTPase and E-NTDase, but stimulatory effect on Na+/K+ ATPase activity. The combinations also exhibited Fe2+ and Cu2+ chelating abilities. Considering the various combinations, a higher caffeine to caffeic acid ratio produced significantly highest enzyme modulatory effects; these were significantly lower to the effect of caffeine alone but significantly higher than the effect of caffeic acid alone. These findings may provide new insight into the effect of proportional combination of these bioactive compounds as obtained in many foods especially with respect to their neuroprotective effects.
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Affiliation(s)
- S F Akomolafe
- Department of Biochemistry, Ekiti State University, Ado-Ekiti, Private Mail Bag 5363, Nigeria.
| | - A J Akinyemi
- Department of Biochemistry, Afe Babalola University, Ado-Ekiti, Private Mail Bag 5454, Nigeria
| | - O B Ogunsuyi
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria; Department of Biomedical Technology, School of Health and Health Technology, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria
| | - S I Oyeleye
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria; Department of Biomedical Technology, School of Health and Health Technology, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria
| | - G Oboh
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria
| | - O O Adeoyo
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology Akure, Private Mail Bag 704, Akure 340001, Nigeria
| | - Y R Allismith
- Department of Biochemistry, Ekiti State University, Ado-Ekiti, Private Mail Bag 5363, Nigeria
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22
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Ogawa T, Sawada N, Iwasaki M, Budhathoki S, Hidaka A, Yamaji T, Shimazu T, Sasazuki S, Narita Y, Tsugane S. Coffee and green tea consumption in relation to brain tumor risk in a Japanese population. Int J Cancer 2016; 139:2714-2721. [PMID: 27560973 DOI: 10.1002/ijc.30405] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/27/2016] [Accepted: 08/12/2016] [Indexed: 01/21/2023]
Abstract
Few prospective studies have investigated the etiology of brain tumor, especially among Asian populations. Both coffee and green tea are popular beverages, but their relation with brain tumor risk, particularly with glioma, has been inconsistent in epidemiological studies. In this study, we evaluated the association between coffee and greed tea intake and brain tumor risk in a Japanese population. We evaluated a cohort of 106,324 subjects (50,438 men and 55,886 women) in the Japan Public Health Center-Based Prospective Study (JPHC Study). Subjects were followed from 1990 for Cohort I and 1993 for Cohort II until December 31, 2012. One hundred and fifty-seven (70 men and 87 women) newly diagnosed cases of brain tumor were identified during the study period. Hazard ratio (HR) and 95% confidence intervals (95%CIs) for the association between coffee or green tea consumption and brain tumor risk were assessed using a Cox proportional hazards regression model. We found a significant inverse association between coffee consumption and brain tumor risk in both total subjects (≥3 cups/day; HR = 0.47, 95%CI = 0.22-0.98) and in women (≥3 cups/day; HR = 0.24, 95%CI = 0.06-0.99), although the number of cases in the highest category was small. Furthermore, glioma risk tended to decrease with higher coffee consumption (≥3 cups/day; HR = 0.54, 95%CI = 0.16-1.80). No association was seen between green tea and brain tumor risk. In conclusion, our study suggested that coffee consumption might reduce the risk of brain tumor, including that of glioma, in the Japanese population.
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Affiliation(s)
- Takahiro Ogawa
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan.,Department of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Norie Sawada
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan.
| | - Motoki Iwasaki
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Sanjeev Budhathoki
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Akihisa Hidaka
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Taiki Yamaji
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Taichi Shimazu
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Shizuka Sasazuki
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Yoshitaka Narita
- Department of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
| | - Shoichiro Tsugane
- Epidemiology and Prevention Group, Center for Public Health Sciences, National Cancer Center, 5-1-1 Tsukiji Chuo-ku, Tokyo, 104-0045, Japan
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Mangalam AK, Rattan R, Suhail H, Singh J, Hoda MN, Deshpande M, Fulzele S, Denic A, Shridhar V, Kumar A, Viollet B, Rodriguez M, Giri S. AMP-Activated Protein Kinase Suppresses Autoimmune Central Nervous System Disease by Regulating M1-Type Macrophage–Th17 Axis. THE JOURNAL OF IMMUNOLOGY 2016; 197:747-60. [DOI: 10.4049/jimmunol.1501549] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 05/31/2016] [Indexed: 01/22/2023]
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Sameni HR, Ramhormozi P, Bandegi AR, Taherian AA, Mirmohammadkhani M, Safari M. Effects of ethanol extract of propolis on histopathological changes and anti-oxidant defense of kidney in a rat model for type 1 diabetes mellitus. J Diabetes Investig 2016; 7:506-13. [PMID: 27181714 PMCID: PMC4931200 DOI: 10.1111/jdi.12459] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 11/23/2015] [Accepted: 12/03/2015] [Indexed: 12/11/2022] Open
Abstract
Aims/Introduction Oxidative stress has a key role in the pathogenesis of diabetes. Propolis and its constituents have a wide range of medicinal properties against oxidative stress. In the present study, we evaluated the anti‐oxidant effects of ethanolic extracts of propolis on kidneys in diabetes mellitus rats. Materials and Methods A total of 40 male Wistar rats were randomly divided into the following five groups: control, diabetes mellitus, diabetes mellitus with vehicle treatment, diabetes mellitus with propolis treatment (100 mg/kg) and diabetes mellitus with propolis treatment (200 mg/kg). Diabetes mellitus in rats was induced by intraperitoneal injection of streptozotocin (60 mg/kg). Diabetic groups were treated with vehicle or ethanolic extracts of Iranian propolis for 6 weeks. Serum concentration of malondialdehyde, superoxide dismutase and glutathione peroxidase were measured. Results The results showed that Iranian propolis significantly inhibited bodyweight loss in diabetes mellitus rats. The propolis extracts significantly reduced serum glucose levels and kidney weight in diabetes mellitus rats (P < 0.001). Furthermore, propolis extracts significantly reduced the malondialdehyde content, and increased the activity of superoxide dismutase and glutathione peroxidase (P < 0.001) along with the total anti‐oxidant activity in the kidney tissue of diabetes mellitus rats. In the kidneys of the diabetes mellitus and vehicle group, the glomerular basement membrane thickness and glomerular area were significantly increased. Treatment of diabetes mellitus rats with the propolis extract significantly reduced the glomerular basement membrane thickness and glomerular area. Conclusions The present study results showed that the Iranian propolis extract could enhance the anti‐oxidant levels and histopathological changes in the kidneys of rats. The final results showed that most of the favorable effects of propolis are mediated by a reduction of blood glucose levels in diabetic animals.
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Affiliation(s)
- Hamid Reza Sameni
- Research Center of Nervous System Stem Cell, Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Parisa Ramhormozi
- Research Center of Nervous System Stem Cell, Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ahmad Reza Bandegi
- Research Center of Nervous System Stem Cell, Department of Biochemistry, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Taherian
- Research Center of Nervous System Stem Cell, Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Majid Mirmohammadkhani
- Research Center for Social Determinants of Health, Department of Community Medicine, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Manouchehr Safari
- Research Center of Nervous System Stem Cell, Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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Yung MMH, Ngan HYS, Chan DW. Targeting AMPK signaling in combating ovarian cancers: opportunities and challenges. Acta Biochim Biophys Sin (Shanghai) 2016; 48:301-17. [PMID: 26764240 PMCID: PMC4886241 DOI: 10.1093/abbs/gmv128] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 10/29/2015] [Indexed: 12/25/2022] Open
Abstract
The development and strategic application of effective anticancer therapies have turned out to be one of the most critical approaches of managing human cancers. Nevertheless, drug resistance is the major obstacle for clinical management of these diseases especially ovarian cancer. In the past years, substantial studies have been carried out with the aim of exploring alternative therapeutic approaches to enhance efficacy of current chemotherapeutic regimes and reduce the side effects caused in order to produce significant advantages in overall survival and to improve patients' quality of life. Targeting cancer cell metabolism by the application of AMP-activated protein kinase (AMPK)-activating agents is believed to be one of the most plausible attempts. AMPK activators such as 5-aminoimidazole-4-carboxamide 1-β-d-ribofuranoside, A23187, metformin, and bitter melon extract not only prevent cancer progression and metastasis but can also be applied as a supplement to enhance the efficacy of cisplatin-based chemotherapy in human cancers such as ovarian cancer. However, because of the undesirable outcomes along with the frequent toxic side effects of most pharmaceutical AMPK activators that have been utilized in clinical trials, attentions of current studies have been aimed at the identification of replaceable reagents from nutraceuticals or traditional medicines. However, the underlying molecular mechanisms of many nutraceuticals in anticancer still remain obscure. Therefore, better understanding of the functional characterization and regulatory mechanism of natural AMPK activators would help pharmaceutical development in opening an area to intervene ovarian cancer and other human cancers.
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Affiliation(s)
- Mingo M H Yung
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Hextan Y S Ngan
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - David W Chan
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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Erdemli HK, Akyol S, Armutcu F, Gulec MA, Canbal M, Akyol O. Melatonin and caffeic acid phenethyl ester in the regulation of mitochondrial function and apoptosis: The basis for future medical approaches. Life Sci 2016; 148:305-12. [DOI: 10.1016/j.lfs.2016.01.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 01/12/2016] [Accepted: 01/13/2016] [Indexed: 12/20/2022]
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27
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Ohta M, Fujinami A, Kobayashi N, Amano A, Ishigami A, Tokuda H, Suzuki N, Ito F, Mori T, Sawada M, Iwasa K, Kitawaki J, Ohnishi K, Tsujikawa M, Obayashi H. Two chalcones, 4-hydroxyderricin and xanthoangelol, stimulate GLUT4-dependent glucose uptake through the LKB1/AMP-activated protein kinase signaling pathway in 3T3-L1 adipocytes. Nutr Res 2015; 35:618-25. [PMID: 26077869 DOI: 10.1016/j.nutres.2015.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 05/15/2015] [Accepted: 05/27/2015] [Indexed: 01/01/2023]
Abstract
4-Hydroxyderricin (4HD) and xanthoangelol (XAG) are major components of n-hexane/ethyl acetate (5:1) extract of the yellow-colored stem juice of Angelica keiskei. 4-Hydroxyderricin and XAG have been reported to increase glucose transporter 4 (GLUT4)-dependent glucose uptake in 3T3-L1 adipocytes, but the detailed mechanism of this phenomenon remains unknown. This present study was aimed at clarifying the detailed mechanism by which 4HD and XAG increase GLUT4-dependent glucose uptake in 3T3-L1 adipocytes. Both 4HD and XAG increased glucose uptake and GLUT4 translocation to the plasma membrane. 4-Hydroxyderricin and XAG also stimulated the phosphorylation of 5' adenosine monophosphate-activated protein kinase (AMPK) and its downstream target acetyl-CoA carboxylase. In addition, phosphorylation of liver kinase B1 (LKB1), which acts upstream of AMPK, was also increased by 4HD and XAG treatment. Small interfering RNA knockdown of LKB1 attenuated 4HD- and XAG-stimulated AMPK phosphorylation and suppressed glucose uptake. These findings demonstrate that 4HD and XAG can increase GLUT4-dependent glucose uptake through the LKB1/AMPK signaling pathway in 3T3-L1 adipocytes.
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Affiliation(s)
- Mitsuhiro Ohta
- Department of Medical Biochemistry, Kobe Pharmaceutical University, Kobe, 658-8558, Japan.
| | - Aya Fujinami
- Department of Medical Biochemistry, Kobe Pharmaceutical University, Kobe, 658-8558, Japan
| | - Norihiro Kobayashi
- Department of Bioanalytical Chemistry, Kobe Pharmaceutical University, Kobe, 658-8558, Japan
| | - Akiko Amano
- Molecular Regulation of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, 173-0015, Japan
| | - Akihito Ishigami
- Molecular Regulation of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, 173-0015, Japan
| | - Harukuni Tokuda
- Department of Complementary and Alternative Medicine, Clinical R&D, Kanazawa University of Graduate School of Medical Science, Kanazawa, 920-8640, Japan
| | - Nobutaka Suzuki
- Department of Complementary and Alternative Medicine, Clinical R&D, Kanazawa University of Graduate School of Medical Science, Kanazawa, 920-8640, Japan
| | - Fumitake Ito
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Taisuke Mori
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Morio Sawada
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Koichi Iwasa
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Jo Kitawaki
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | | | - Muneo Tsujikawa
- Institute of Bio-Response Informatics, Kyoto, 602-8566, Japan
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Kawabata K, Mukai R, Ishisaka A. Quercetin and related polyphenols: new insights and implications for their bioactivity and bioavailability. Food Funct 2015; 6:1399-417. [DOI: 10.1039/c4fo01178c] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The physiological functions and mechanisms of action of quercetin and its related polyphenols are highlighted, including their effects on brain, blood vessels, muscle, and intestinal microflora.
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Affiliation(s)
- Kyuichi Kawabata
- Department of Bioscience
- Fukui Prefectural University
- Eiheiji-cho, Yoshida-gun, Fukui 910-1195
- Japan
| | - Rie Mukai
- Department of Food Science
- Institute of Health Biosciences
- The University of Tokushima Graduate School
- Tokushima 770-8503
- Japan
| | - Akari Ishisaka
- School of Human Science and Environment
- University of Hyogo
- Himeji 670-0092
- Japan
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Caffeamide 36-13 Regulates the Antidiabetic and Hypolipidemic Signs of High-Fat-Fed Mice on Glucose Transporter 4, AMPK Phosphorylation, and Regulated Hepatic Glucose Production. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:821569. [PMID: 25140189 PMCID: PMC4130186 DOI: 10.1155/2014/821569] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/03/2014] [Indexed: 01/14/2023]
Abstract
This study was to investigate the antidiabetic and antihyperlipidemic effects of (E)-3-[3, 4-dihydroxyphenyl-1-(piperidin-1-yl)prop-2-en-1-one] (36-13) (TS), one of caffeic acid amide derivatives, on high-fat (HF-) fed mice. The C57BL/6J mice were randomly divided into the control (CON) group and the experimental group, which was firstly fed a HF diet for 8 weeks. Then, the HF group was subdivided into four groups and was given TS orally (including two doses) or rosiglitazone (Rosi) or vehicle for 4 weeks. Blood, skeletal muscle, and tissues were examined by measuring glycaemia and dyslipidemia-associated events. TS effectively prevented HF diet-induced increases in the levels of blood glucose, triglyceride, insulin, leptin, and free fatty acid (FFA) and weights of visceral fa; moreover, adipocytes in the visceral depots showed a reduction in size. TS treatment significantly increased the protein contents of glucose transporter 4 (GLUT4) in skeletal muscle; TS also significantly enhanced Akt phosphorylation in liver, whereas it reduced the expressions of phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase). Moreover, TS enhanced phosphorylation of AMP-activated protein kinase (phospho-AMPK) both in skeletal muscle and liver tissue. Therefore, it is possible that the activation of AMPK by TS resulted in enhanced glucose uptake in skeletal muscle, contrasting with diminished gluconeogenesis in liver. TS exhibits hypolipidemic effect by decreasing the expressions of fatty acid synthase (FAS). Thus, antidiabetic properties of TS occurred as a result of decreased hepatic glucose production by PEPCK and G6Pase downregulation and improved insulin sensitization. Thus, amelioration of diabetic and dyslipidemic state by TS in HF-fed mice occurred by regulation of GLUT4, G6Pase, and FAS and phosphorylation of AMPK.
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Chicoric acid is an antioxidant molecule that stimulates AMP kinase pathway in L6 myotubes and extends lifespan in Caenorhabditis elegans. PLoS One 2013; 8:e78788. [PMID: 24244361 PMCID: PMC3823992 DOI: 10.1371/journal.pone.0078788] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 09/23/2013] [Indexed: 12/13/2022] Open
Abstract
Chicoric acid (CA) is a caffeoyl derivative previously described as having potential anti-diabetic properties. As similarities in cellular mechanism similarities between diabetes and aging have been shown, we explored on L6 myotubes the effect of CA on the modulation of intracellular pathways involved in diabetes and aging. We also determined its influence on lifespan of Caenorhabditis elegans worm (C. elegans). In L6 myotubes, CA was a potent reactive oxygen species (ROS) scavenger, reducing ROS accumulation under basal as well as oxidative stress conditions. CA also stimulated the AMP-activated kinase (AMPK) pathway and displayed various features associated with AMPK activation: CA (a) enhanced oxidative enzymatic defences through increase in glutathion peroxidase (GPx) and superoxide dismutase (SOD) activities, (b) favoured mitochondria protection against oxidative damage through up-regulation of MnSOD protein expression, (c) increased mitochondrial biogenesis as suggested by increases in complex II and citrate synthase activities, along with up-regulation of PGC-1α mRNA expression and (d) inhibited the insulin/Akt/mTOR pathway. As AMPK stimulators (e.g. the anti-diabetic agent meformin or polyphenols such as epigallocatechingallate or quercetin) were shown to extend lifespan in C. elegans, we also determined the effect of CA on the same model. A concentration-dependant lifespan extension was observed with CA (5–100 μM). These data indicate that CA is a potent antioxidant compound activating the AMPK pathway in L6 myotubes. Similarly to other AMPK stimulators, CA is able to extend C. elegans lifespan, an effect measurable even at the micromolar range. Future studies will explore CA molecular targets and give new insights about its possible effects on metabolic and aging-related diseases.
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Maruta H. Herbal therapeutics that block the oncogenic kinase PAK1: a practical approach towards PAK1-dependent diseases and longevity. Phytother Res 2013; 28:656-72. [PMID: 23943274 DOI: 10.1002/ptr.5054] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 07/12/2013] [Indexed: 12/11/2022]
Abstract
Over 35 years research on PAKs, RAC/CDC42(p21)-activated kinases, comes of age, and in particular PAK1 has been well known to be responsible for a variety of diseases such as cancer (mainly solid tumors), Alzheimer's disease, acquired immune deficiency syndrome and other viral/bacterial infections, inflammatory diseases (asthma and arthritis), diabetes (type 2), neurofibromatosis, tuberous sclerosis, epilepsy, depression, schizophrenia, learning disability, autism, etc. Although several distinct synthetic PAK1-blockers have been recently developed, no FDA-approved PAK1 blockers are available on the market as yet. Thus, patients suffering from these PAK1-dependent diseases have to rely on solely a variety of herbal therapeutics such as propolis and curcumin that block PAK1 without affecting normal cell growth. Furthermore, several recent studies revealed that some of these herbal therapeutics significantly extend the lifespan of nematodes (C. elegans) and fruit flies (Drosophila), and PAK1-deficient worm lives longer than the wild type. Here, I outline mainly pathological phenotypes of hyper-activated PAK1 and a list of herbal therapeutics that block PAK1, but cause no side (harmful) effect on healthy people or animals.
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Liao JC, Tsai JC, Peng WH, Chiu YJ, Sung PJ, Tsuzoki M, Kuo YH. Anti-inflammatory activity of N-(3-florophenyl)ethylcaffeamide in mice. Int J Mol Sci 2013; 14:15199-211. [PMID: 23887648 PMCID: PMC3759856 DOI: 10.3390/ijms140815199] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 07/04/2013] [Accepted: 07/16/2013] [Indexed: 11/16/2022] Open
Abstract
In this study, we evaluated the anti-inflammatory activity of one synthetic product, N-(3-Florophenyl)ethylcaffeamide (abbrev. FECA), by using animal model of λ-carrageenan-induced paw edema in mice. The anti-inflammatory mechanism of FECA was determined by measuring the levels of cyclooxygenase-2 (COX-2), nitric oxide (NO), tumor necrosis factor (TNF-α), interleukin-1β (IL-1β), and malondialdehyde (MDA) in the edema paw tissue, and the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GRd) in the liver. The results showed that FECA reduced the paw edema at three, four and five hours after λ-carrageenan administration. The levels of COX-2, NO, TNF-α, and MDA in the λ-carrageenan-induced edema paws were reduced and the activities of SOD, GPx, and GRd in liver tissues were raised by FECA. These results suggested that FECA possessed anti-inflammatory activities and the anti-inflammatory mechanisms might be related to the decrease of the levels of COX-2, NO, and TNF-α in inflamed tissues and the increase in the MDA level by increasing the activities of SOD, GPx, and GRd.
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Affiliation(s)
- Jung-Chun Liao
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan; E-Mail:
| | - Jen-Chieh Tsai
- Department of Health and Nutrition Biotechnology, College of Health Science, Asia University, Taichung 404, Taiwan; E-Mail:
| | - Wen-Huang Peng
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Pharmacy, China Medical University, Taichung 404, Taiwan; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (W.-H.P.); (Y.-H.K.); Tel.: +886-4-2205-3366 (ext. 5505) (W.-H.P.); Fax: +886-4-2407-5683 (W.-H.P.)
| | - Yung-Jia Chiu
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Pharmacy, China Medical University, Taichung 404, Taiwan; E-Mail:
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan; E-Mail:
- Graduate Institute of Marine Biotechnology, National Dong Hwa University, Pingtung 944, Taiwan
| | - Minoru Tsuzoki
- Nihon Pharmaceutica University, Saitama 362-0806, Japan; E-Mail:
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, College of Pharmacy, China Medical University, Taichung 404, Taiwan; E-Mail:
- Tsuzuki Institute for Traditional Medicine, China Medical University, Taichung 404, Taiwan
- Authors to whom correspondence should be addressed; E-Mails: (W.-H.P.); (Y.-H.K.); Tel.: +886-4-2205-3366 (ext. 5505) (W.-H.P.); Fax: +886-4-2407-5683 (W.-H.P.)
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Dai X, Ding Y, Zhang Z, Cai X, Bao L, Li Y. Quercetin But Not Quercitrin Ameliorates Tumor Necrosis Factor-Alpha-Induced Insulin Resistance in C2C12 Skeletal Muscle Cells. Biol Pharm Bull 2013; 36:788-95. [DOI: 10.1248/bpb.b12-00947] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Xiaoqian Dai
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
| | - Ye Ding
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
| | - Zhaofeng Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
| | - Xiaxia Cai
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
| | - Lei Bao
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University Health Science Center
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Anwar J, Spanevello RM, Thomé G, Stefanello N, Schmatz R, Gutierres J, Vieira J, Baldissarelli J, Carvalho FB, da Rosa MM, Rubin MA, Fiorenza A, Morsch VM, Schetinger MRC. Effects of caffeic acid on behavioral parameters and on the activity of acetylcholinesterase in different tissues from adult rats. Pharmacol Biochem Behav 2012; 103:386-94. [DOI: 10.1016/j.pbb.2012.09.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 08/10/2012] [Accepted: 09/08/2012] [Indexed: 01/04/2023]
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Choi SS, Cha BY, Lee YS, Yonezawa T, Teruya T, Nagai K, Woo JT. Honokiol and magnolol stimulate glucose uptake by activating PI3K-dependent Akt in L6 myotubes. Biofactors 2012; 38:372-7. [PMID: 22674833 DOI: 10.1002/biof.1029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 04/27/2012] [Indexed: 01/09/2023]
Abstract
Honokiol and magnolol, ingredients of Magnolia officinalis, which is used in traditional Chinese and Japanese medicines, have been reported to have antioxidant, anticancer, and antiangiogenic effects. Effects of these compounds on glucose metabolism in adipocytes have also been reported. However, their effects on skeletal muscle glucose uptake and the underlying molecular mechanisms are still unknown. Here, we investigated the direct effects and signaling pathways activated by honokiol and magnolol in skeletal muscle cells using L6 myotubes. We found that honokiol and magnolol dose-dependently acutely stimulated glucose uptake without synergistic effects of combined administration in L6 myotubes. Treatment with honokiol and magnolol also stimulated glucose transporter-4 translocation to the cell surface. Honokiol- and magnolol-stimulated glucose uptake was blocked by the phosphatidylinositol-3 kinase inhibitor, wortmannin. Both honokiol and magnolol stimulated Akt phosphorylation, a key element in the insulin signaling pathway, which was completely inhibited by wortmannin. These results suggest that honokiol and magnolol might have beneficial effects on glucose metabolism by activating the insulin signaling pathway.
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Affiliation(s)
- Sun-Sil Choi
- Research Institute for Biological Functions, Chubu University, Kasugai, Aichi, Japan
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36
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Martineau LC. Large enhancement of skeletal muscle cell glucose uptake and suppression of hepatocyte glucose-6-phosphatase activity by weak uncouplers of oxidative phosphorylation. Biochim Biophys Acta Gen Subj 2012; 1820:133-50. [DOI: 10.1016/j.bbagen.2011.11.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 11/16/2011] [Accepted: 11/19/2011] [Indexed: 01/08/2023]
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37
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AMP-activated kinase mediates adipose stem cell-stimulated neuritogenesis of PC12 cells. Neuroscience 2011; 181:40-7. [DOI: 10.1016/j.neuroscience.2011.02.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 02/14/2011] [Accepted: 02/16/2011] [Indexed: 12/21/2022]
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38
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Lin WL, Su WW, Cai XY, Luo LK, Li PB, Wang YG. Fermentation effects of oligosaccharides of Radix Ophiopogonis on alloxan-induced diabetes in mice. Int J Biol Macromol 2011; 49:194-200. [PMID: 21549746 DOI: 10.1016/j.ijbiomac.2011.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 03/19/2011] [Accepted: 04/19/2011] [Indexed: 02/05/2023]
Abstract
In this study, oligosaccharides extracted from Ophiopogon japonicus vinegar (OOV) by alcoholic and acetic acid fermentation with water extracts from Radix Ophiopogon and oligosaccharides extracted from Radix Ophiopogonis (OOJ) were investigated. Characterization of the extracts indicated that OOV are proteoglycans, whereas OOJ are not. Moreover, compared with OOJ, monosaccharide compositions of OOV only include fructose and galactose and not glucose. MALDI-TOF-mass spectrometric results showed that the molecular weight of OOV was smaller after fermentation. Changes in the characteristics of OOV would inevitably lead to changes in its hypoglycemic properties. The OOV inhibition activity against α-glucosidase was stronger than that of OOJ. The inhibition activity became stronger with higher dosages of OOV. The hypoglycemic effect of OOV on alloxan-induced diabetic mice was stronger than that of OOJ. More important, the ability of OOV to reduce damage on islets in diabetic mice was stronger than that of OOJ. Overall, alcoholic and acetic acid fermentation improved the hypoglycemic activity of OOJ.
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Affiliation(s)
- Wan-Ling Lin
- School of Life Sciences, Sun Yat-sen University, Haizhu District, Guangzhou, PR China
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Shah AK, Gupta A, Dey CS. AICAR induced AMPK activation potentiates neuronal insulin signaling and glucose uptake. Arch Biochem Biophys 2011; 509:142-6. [PMID: 21414288 DOI: 10.1016/j.abb.2011.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 03/08/2011] [Accepted: 03/09/2011] [Indexed: 12/15/2022]
Abstract
Insulin signaling is extensively studied in peripheral tissues while comparatively understudied in neuronal cells. AMPK is considered to be a fuel gauge of our body and activation of the same has been reported to increase insulin sensitivity in skeletal muscles thereby increasing glucose transport. However its role in neuronal insulin signaling is not established yet. Here we report positive regulation of insulin signaling as well as glucose uptake by AICAR, a pharmacological activator of AMPK, in cultured Neuro-2a cells in vitro. Compound C, a specific AMPK inhibitor, completely blocked the potentiating effects of AICAR on insulin signaling and glucose uptake, thus suggesting that AMPK mediates effects of AICAR on insulin signaling. Our study provides valuable insight in understanding the role of AMPK in neuronal insulin signal transduction.
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Affiliation(s)
- Alok Kishorkumar Shah
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Sec. 67, S.A.S. Nagar, Punjab 160 062, India
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40
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Maruta H. Effective neurofibromatosis therapeutics blocking the oncogenic kinase PAK1. Drug Discov Ther 2011; 5:266-78. [DOI: 10.5582/ddt.2011.v5.6.266] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Al-Hariri M, Eldin TG, Abu-Hozaifa B, Elnour A. Glycemic control and anti-osteopathic effect of propolis in diabetic rats. Diabetes Metab Syndr Obes 2011; 4:377-84. [PMID: 22253535 PMCID: PMC3257965 DOI: 10.2147/dmso.s24159] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The aim of the study was to explore the possibility that propolis can control diabetes mellitus and prevent diabetic osteopathy in rats. The study compared 60 streptozotocin (STZ)-induced diabetic rats, with ten nondiabetic rats used as a negative control. The experimental design comprised seven groups (n = 10 rats per group): (1) nondiabetic, used as a negative control; (2) nontreated, used as a positive control; (3) treated with insulin alone; (4) treated with a single dose of propolis alone; (5) treated with a double dose of propolis; (6) treated with insulin and a single dose of propolis; and (7) treated with insulin and a double dose of propolis. After 6 weeks of treatment, the rats were sacrificed. Ratios of femur ash to femur weight and of femur weight to body weight (FW/BW) were calculated and calcium (Ca), phosphorus (P), and magnesium (Mg) concentrations in femur ash were estimated and analyzed. Fasting blood glucose (FBG), plasma insulin and glucagon, serum thiobarbituric acid reactive substances (TBARS), plasma parathyroid hormone (PTH), and calcitonin levels were also estimated and analyzed. There was significant reduction in FBG in all diabetic treated rats. Similarly, higher plasma insulin levels were observed in diabetic rats treated with propolis and insulin than in nontreated diabetic rats, although plasma insulin was not comparatively higher in diabetic rats treated with insulin alone. Serum TBARS was significantly lower in the propolis treated rats than the diabetic nontreated rats. No differences in PTH and calcitonin levels were observed among treatment groups. The FW/BW ratio was significantly higher in diabetic treated groups than in control groups. Furthermore, diabetic rats treated with propolis and insulin had significantly higher Ca, P, and Mg concentrations in femoral ash than nontreated diabetic rats and diabetic rats treated with insulin alone. In conclusion, propolis has a remarkable effect on glucose homeostasis and bone mineralization.
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Affiliation(s)
- M Al-Hariri
- Correspondence: Mohammed Taha Al-Hariri, College of Medicine, University of Dammam, PO Box 2114, Dammam 31451, Saudi Arabia, Tel +966 50 727 5028, Fax +966 38 580 771, Email
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Ha DT, Nam Trung T, Bich Thu N, Van On T, Hai Nam N, Van Men C, Thi Phuong T, Bae K. Adlay Seed Extract (Coix lachryma-jobi L.) Decreased Adipocyte Differentiation and Increased Glucose Uptake in 3T3-L1 Cells. J Med Food 2010; 13:1331-9. [DOI: 10.1089/jmf.2010.1155] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Do Thi Ha
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
- National Institute of Medicinal Materials, Hoankiem, Vietnam
| | - Trinh Nam Trung
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
- Vietnam Military Medical University, Hadong, Vietnam
| | - Nguyen Bich Thu
- National Institute of Medicinal Materials, Hoankiem, Vietnam
| | - Tran Van On
- Hanoi University of Pharmacy, Hanoi, Vietnam
| | | | - Chu Van Men
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
- Vietnam Military Medical University, Hadong, Vietnam
| | - Tran Thi Phuong
- College of Pharmacy, Thai Nguyen University, Thai Nguyen, Vietnam
| | - KiHwan Bae
- National Institute of Medicinal Materials, Hoankiem, Vietnam
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43
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Eid HM, Martineau LC, Saleem A, Muhammad A, Vallerand D, Benhaddou-Andaloussi A, Nistor L, Afshar A, Arnason JT, Haddad PS. Stimulation of AMP-activated protein kinase and enhancement of basal glucose uptake in muscle cells by quercetin and quercetin glycosides, active principles of the antidiabetic medicinal plant Vaccinium vitis-idaea. Mol Nutr Food Res 2010; 54:991-1003. [PMID: 20087853 DOI: 10.1002/mnfr.200900218] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Several medicinal plants that stimulate glucose uptake in skeletal muscle cells were identified from among species used by the Cree of Eeyou Istchee of northern Quebec to treat symptoms of diabetes. This study aimed to elucidate the mechanism of action of one of these products, the berries of Vaccinium vitis idaea, as well as to isolate and identify its active constituents using a classical bioassay-guided fractionation approach. Western immunoblot analysis in C2C12 muscle cells revealed that the ethanol extract of the berries stimulated the insulin-independent AMP-activated protein kinase (AMPK) pathway. The extract mildly inhibited ADP-stimulated oxygen consumption in isolated mitochondria, an effect consistent with metabolic stress and the ensuing stimulation of AMPK. This mechanism is highly analogous to that of Metformin. Fractionation guided by glucose uptake activity resulted in the isolation of ten compounds. The two most active, quercetin-3-O-glycosides, enhanced glucose uptake by 38-59% (50 muM; 18 h treatment) in the absence of insulin. Quercetin aglycone, a minor constituent, stimulated uptake by 37%. The quercetin glycosides and the aglycone stimulated the AMPK pathway at concentrations of 25-100 muM, but only the aglycone inhibited ATP synthase in isolated mitochondria (by 34 and 79% at 25 and 100 muM, respectively). This discrepancy suggests that the activity of the glycosides may require hydrolysis to the aglycone form. These findings indicate that quercetin and quercetin 3-O-glycosides are responsible for the antidiabetic activity of V. vitis crude berry extract mediated by AMPK. These common plant products may thus have potential applications for the prevention and treatment of insulin resistance and other metabolic diseases.
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Affiliation(s)
- Hoda M Eid
- Natural Health Products and Metabolic Diseases Laboratory, Department of Pharmacology, Université de Montréal, Montreal, Que. H3C 3J7, Canada
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Kawabata K, Sawada K, Ikeda K, Fukuda I, Kawasaki K, Yamamoto N, Ashida H. Prenylated chalcones 4-hydroxyderricin and xanthoangelol stimulate glucose uptake in skeletal muscle cells by inducing GLUT4 translocation. Mol Nutr Food Res 2010; 55:467-75. [DOI: 10.1002/mnfr.201000267] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 08/02/2010] [Accepted: 08/19/2010] [Indexed: 12/11/2022]
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Weng YC, Chiu HL, Lin YC, Chi TC, Kuo YH, Su MJ. Antihyperglycemic effect of a caffeamide derivative, KS370G, in normal and diabetic mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10033-10038. [PMID: 20804127 DOI: 10.1021/jf1024246] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The antihyperglycemic actions of caffeamide derivatives, especially KS370G, in normal ICR, streptozotocin-induced diabetic (T1DM) and diet-induced diabetic (T2DM) mice were investigated in this study. Oral administration of the compound decreased the plasma glucose levels in both normal and diabetic mice, and appeared to be in a dose-dependent manner in normal and diet-induced type 2 diabetic mice. It was found that KS370G could stimulate the release of insulin in both normal and T2DM mice, and a dose of 1 mg per kg KS370G could significantly attenuate the increase of plasma glucose induced by an intraperitoneal glucose challenge test in normal and diabetic mice. Similar treatment with KS370G significantly increased glycogen content in both liver and skeletal muscle. Hence, the hypoglycemic effect of KS370G in normal and diabetic mice could be attributed to the stimulation of insulin release and the increase of glucose utilization.
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Affiliation(s)
- Yi-Chun Weng
- Institute of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC
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Ha DT, Trung TN, Hien TT, Dao TT, Yim N, Ngoc TM, Oh WK, Bae K. Selected compounds derived from Moutan Cortex stimulated glucose uptake and glycogen synthesis via AMPK activation in human HepG2 cells. JOURNAL OF ETHNOPHARMACOLOGY 2010; 131:417-424. [PMID: 20633632 DOI: 10.1016/j.jep.2010.07.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Revised: 06/01/2010] [Accepted: 07/06/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY To evaluate the effect of selected compounds derived from Moutan Cortex on glucose uptake and glycogen synthesis associated with AMPK activation in insulin-resistant human HepG2 cell. MATERIALS AND METHODS The effect of isolated compounds (1-16) on glucose uptake and glycogen synthesis was performed using HepG2 cells. The western blot was used to determine the expression of AMPK and its downstream substrates, ACC, p-ACC, and p-GSK-3beta. RESULTS The effects of the 16 compounds from Moutan Cortex on glucose metabolism in HepG2 cells under high glucose conditions were evaluated. Compounds 2, 3, and 6 displayed highly potent effects on the stimulation of glucose uptake and glycogen synthesis in human HepG2 cells under high glucose conditions. Compounds 2, 3, and 6 phosphorylate AMPK (AMP-activated protein kinase), and resulted in increased phosphorylation of GSK-3beta and suppression of lipogenic expression (ACC and FAS) in a dose-dependent manner. Compounds 2, 3, and 6 also demonstrated interesting, strong eNOS phosphorylation in human umbilical vein endothelial cells (HUVECs). Compounds 1, 4, 5-12, and 14 displayed considerable effects on hepatic glucose production, AMPK activation, and phosphorylation of GSK-3beta in HepG2 cells under high glucose conditions. CONCLUSIONS These effects may indicate that the activation of AMPK by the active compounds from Moutan Cortex has considerable potential for reversing the metabolic abnormalities associated with type-2 diabetes.
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Affiliation(s)
- Do Thi Ha
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
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Lee MS, Hwang JT, Kim SH, Yoon S, Kim MS, Yang HJ, Kwon DY. Ginsenoside Rc, an active component of Panax ginseng, stimulates glucose uptake in C2C12 myotubes through an AMPK-dependent mechanism. JOURNAL OF ETHNOPHARMACOLOGY 2010; 127:771-6. [PMID: 19961916 DOI: 10.1016/j.jep.2009.11.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 11/20/2009] [Accepted: 11/24/2009] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Panax ginseng and its major component, ginsenosides, are widely used for the prevention of various disorders in oriental medicine. AIM OF THE STUDY To evaluate the effect of ginsenoside Rc (Rc), one of the active constituents in Panax ginseng, on glucose uptake in C2C12 myotubes. RESULTS Treatment of the C2C12 myotubes with Rc significantly increased glucose uptake. To determine the mechanism of Rc-induced glucose uptake, either insulin-dependent signaling or insulin-independent signaling pathway activities were measured using western blot analysis. We showed that Rc significantly activated an insulin-independent AMPK signaling pathway. However, Rc had no effect on the components of the insulin-dependent signaling pathway, such as receptor substrates (IRS)-1 and protein kinase B or Akt (PKB/Akt). Moreover, we found that treatment with an AMPK inhibitor abolished both glucose uptake and p38 MAPK phosphorylation. This result implies that AMPK activity is critical for the Rc-induced glucose uptake and that AMPK is situated upstream of p38 MAPK. In addition, we also showed that the activation of AMPK and p38 induced by ginsenoside Rc is mediated by reactive oxygen species (ROS) production, suggesting that upstream regulators of AMPK- and p38 MAPK-mediated glucose uptake. CONCLUSION Ginsenoside Rc significantly enhances glucose uptake by inducing ROS generation, which leads to AMPK and p38 MAPK activation. Consequently, ginsenoside Rc can be used as a potent natural anti-diabetic agent.
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Affiliation(s)
- Myoung-Su Lee
- Biogeron Research Center, Korea Food Research Institute, Bundang-ku, Songnam, Republic of Korea
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48
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Martineau LC, Adeyiwola-Spoor DCA, Vallerand D, Afshar A, Arnason JT, Haddad PS. Enhancement of muscle cell glucose uptake by medicinal plant species of Canada's native populations is mediated by a common, metformin-like mechanism. JOURNAL OF ETHNOPHARMACOLOGY 2010; 127:396-406. [PMID: 19861154 DOI: 10.1016/j.jep.2009.10.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 10/13/2009] [Accepted: 10/17/2009] [Indexed: 05/28/2023]
Abstract
AIM The purpose of the present study was to elucidate the mechanisms of action mediating enhancement of basal glucose uptake in skeletal muscle cells by seven medicinal plant products recently identified from the pharmacopeia of native Canadian populations (Spoor et al., 2006). METHODS Activity of the major signaling pathways that regulate glucose uptake was assessed by western immunoblot in C2C12 muscle cells treated with extracts from these plant species. Effects of extracts on mitochondrial function were assessed by respirometry in isolated rat liver mitochondria. Metabolic stress induced by extracts was assessed by measuring ATP concentration and rate of cell medium acidification in C2C12 myotubes and H4IIE hepatocytes. Extracts were applied at a dose of 15-100 microg/ml. RESULTS The effect of all seven products was achieved through a common mechanism mediated not by the insulin signaling pathway but rather by the AMP-activated protein kinase (AMPK) pathway in response to the disruption of mitochondrial function and ensuing metabolic stress. Disruption of mitochondrial function occurred in the form of uncoupling of oxidative phosphorylation and/or inhibition of ATPsynthase. Activity of the AMPK pathway, in some instances comparable to that stimulated by 4mM of the AMP-mimetic AICAR, was in several cases sustained for at least 18h post-treatment. Duration of metabolic stress, however, was in most cases in the order of 1h. CONCLUSIONS The mechanism common to the seven products studied here is analogous to that of the antidiabetic drug Metformin. Of interest is the observation that metabolic stress need not be sustained in order to induce important adaptive responses. The results support the use of these products as culturally adapted treatments for insulin resistance and hyperglycemia in susceptible aboriginal populations where adherence to modern diabetes pharmaceuticals is an issue. The mechanism reported here may be widespread and mediate the antidiabetic activity of traditional remedies from various other cultures.
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Affiliation(s)
- Louis C Martineau
- Natural Health Products and Metabolic Diseases Laboratory, Dept of Pharmacology, Université de Montréal, Montreal, Quebec, Canada
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Eid HM, Vallerand D, Muhammad A, Durst T, Haddad PS, Martineau LC. Structural constraints and the importance of lipophilicity for the mitochondrial uncoupling activity of naturally occurring caffeic acid esters with potential for the treatment of insulin resistance. Biochem Pharmacol 2010; 79:444-54. [DOI: 10.1016/j.bcp.2009.08.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2009] [Revised: 08/26/2009] [Accepted: 08/27/2009] [Indexed: 11/15/2022]
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Kandadi MR, Rajanna PK, Unnikrishnan MK, Boddu SP, Hua Y, Li J, Du M, Ren J, Sreejayan N. 2-(3,4-Dihydro-2H-pyrrolium-1-yl)-3oxoindan-1-olate (DHPO), a novel, synthetic small molecule that alleviates insulin resistance and lipid abnormalities. Biochem Pharmacol 2010; 79:623-31. [PMID: 19769946 DOI: 10.1016/j.bcp.2009.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2009] [Revised: 09/12/2009] [Accepted: 09/15/2009] [Indexed: 01/23/2023]
Abstract
Type-2 diabetes is growing at epidemic proportions world-wide. This report describes the effect of a novel, synthetic, small molecule 2-(3,4-dihydro-2H-pyrrolium-1-yl)-3oxoindan-1-olate (DHPO), on metabolic abnormalities in genetic and dietary mouse models of type-2 diabetes. DHPO (20mg/kg/d i.p. for 21 days) attenuated fasting blood glucose, improved glucose disposal and corrected dyslipidemia in genetic (leptin deficient, ob/ob) and dietary (high-fat-fed) mouse models of insulin resistance. In addition, DHPO augmented 2-deoxy-d-glucose (2DG) uptake in gastrocnemius muscles of wild-type mice and in cultured myotubes. The increase in 2DG-uptake was associated with an increase in the phosphorylation of AMPK (thr-172) and its downstream effector acetyl-CoA carboxylase without any changes in the phosphorylation of Akt of insulin receptor. The AMPK inhibitor, compound C attenuated DHPO-induced glucose-uptake whereas the PI3-kinase inhibitor Wortmannin was less effective. In addition, DHPO failed to augment glucose-uptake in the gastrocnemius muscle from AMPK-alpha2-transgenic (kinase-dead) mice. Taken together, these results suggest that DHPO is a novel small molecule that alleviates impaired glucose tolerance and lipid abnormalities associated with type-2 diabetes.
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Affiliation(s)
- Machender R Kandadi
- University of Wyoming, School of Pharmacy, Division of Pharmaceutical Sciences & Center for Cardiovascular Research and Alternative Medicine, Department of Animal Sciences, Laramie, WY 82071, USA
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