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Mazumdar D, Singh S. Diabetic Encephalopathy: Role of Oxidative and Nitrosative Factors in Type 2 Diabetes. Indian J Clin Biochem 2024; 39:3-17. [PMID: 38223005 PMCID: PMC10784252 DOI: 10.1007/s12291-022-01107-y] [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: 06/29/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Diabetes mellitus is a set of complex metabolic disorders characterized by chronic hyperglycaemic condition due to defective insulin secretion (Type 1) and action (Type 2), which leads to serious micro and macro-vascular damage, inflammation, oxidative and nitrosative stress and a deranged energy homeostasis due to imbalance in the glucose and lipid metabolism. Moreover, patient with diabetes mellitus often showed the nervous system disorders known as diabetic encephalopathy. The precise pathological mechanism of diabetic encephalopathy by which it effects the central nervous system directly or indirectly causing the cognitive and motor impairment, is not completely understood. However, it has been speculated that like other extracerebellar tissues, oxidative and nitrosative stress may play significant role in the pathogenesis of diabetic encephalopathy. Therefore, the present review aimed to explain the possible association of the oxidative and nitrosative stress caused by the chronic hyperglycaemic condition with the central nervous system complications of the type 2 diabetes mellitus induced diabetic encephalopathy.
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Affiliation(s)
- Debashree Mazumdar
- Biochemistry and Molecular Biology Laboratory, Department of Zoology, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh 495009 India
| | - Santosh Singh
- Biochemistry and Molecular Biology Laboratory, Department of Zoology, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh 495009 India
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Mani V, Arfeen M, Sajid S, Almogbel Y. Aqueous Extract from Sukkari Date Seeds Attenuates Neuroinflammation Induced by Type-2 Diabetic in Rats. INT J PHARMACOL 2022. [DOI: 10.3923/ijp.2022.570.577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mani V, Arfeen M, Sajid S, Almogbel Y. Neuroprotective Effect of Aqueous Extract of Ajwa Seeds via Anti-Inflammatory Pathways in Type-2 Diabetic-Induced Rats. INT J PHARMACOL 2022. [DOI: 10.3923/ijp.2022.299.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhang YM, Zheng T, Huang TT, Gu PP, Gou LS, Ma TF, Liu YW. Sarsasapogenin attenuates Alzheimer-like encephalopathy in diabetes. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 91:153686. [PMID: 34333330 DOI: 10.1016/j.phymed.2021.153686] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND A crosstalk exists between diabetes and Alzheimer's disease (AD), and diabetic encephalopathy displays AD-like disorders. Sarsasapogenin (Sar) has strong anti-inflammatory efficacy, showing neuroprotection and memory-enhancement effects. PURPOSE This study aims to verify the ameliorative effects of Sar on diabetic encephalopathy in vivo and in vitro, and to clarify the mechanisms from attenuation of AD-like pathology. METHODS Streptozotocin-induced type 1 diabetic rats and high glucose-cultured SH-SY5Y cells were used in this study. After Sar treatment (20 and 60 mg/kg) for consecutive 9 weeks, Morris water maze and novel object recognition tasks were performed. Hematoxylin-eosin staining was used for examining loss of neurons in CA1 area and ki67 expression for reflecting neurogenesis in DG area of hippocampus. Aβ production pathway and tau phosphorylation kinase cascade were examined in these two models. RESULTS Sar improved learning and memory ability, loss of neurons and reduction of neurogenesis in the hippocampus of diabetic rats. Moreover, Sar suppressed Aβ overproduction due to up-regulation of BACE1 in protein and mRNA and tau hyperphosphorylation from inactivation of AKT/GSK-3β cascade in the hippocampus and cerebral cortex of diabetic rats and high glucose-cultured SH-SY5Y cells, and PPARγ antagonism abolished the effects of Sar on key molecules in the two pathways. Additionally, it was found that high glucose-stimulated Aβ overproduction was prior to tau hyperphosphorylation in neurons. CONCLUSION Sar alleviated diabetic encephalopathy, which was obtained through inhibitions of Aβ overproduction and tau hyperphosphorylation mediated by the activation of PPARγ signaling. Hence, Sar is a good candidate compound for AD-like disorders.
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Affiliation(s)
- Yu-Meng Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Ting Zheng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Ting-Ting Huang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Pan-Pan Gu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Ling-Shan Gou
- Center for Genetic Medicine, Xuzhou Maternity and Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Teng-Fei Ma
- Institute for Stem Cell and Neural Regeneration, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yao-Wu Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; Department of Pharmacology, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China.
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Kong L, Liu Y, Zhang YM, Li Y, Gou LS, Ma TF, Liu YW. Sarsasapogenin ameliorates diabetes-associated memory impairment and neuroinflammation through down-regulation of PAR-1 receptor. Phytother Res 2021; 35:3167-3180. [PMID: 33885189 DOI: 10.1002/ptr.7005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 12/08/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022]
Abstract
Sarsasapogenin (Sar), a natural steroidal compound, shows neuroprotection, cognition-enhancement, antiinflammation, antithrombosis effects, and so on. However, whether Sar has ameliorative effects on diabetes-associated cognitive impairment remains unknown. In this study, we found that Sar ameliorated diabetes-associated memory impairment in streptozotocin-induced diabetic rats, evidenced by increased numbers of crossing platform and percentage of time spent in the target quadrant in Morris water maze tests, and suppressed the nucleotide-binding domain and leucine-rich repeat containing protein 1 (NLRP1) inflammasome in hippocampus and cerebral cortex. Furthermore, Sar inhibited advanced glycation end-products and its receptor (AGEs/RAGE) axis and suppressed up-regulation of thrombin receptor protease-activated receptor 1 (PAR-1) in cerebral cortex. On the other hand, Sar mitigated high glucose-induced neuronal damages, NLRP1 inflammasome activation, and PAR-1 up-regulation in high glucose-cultured SH-SY5Y cells, but did not affect thrombin activity. Moreover, the effects of Sar were similar to those of a selective PAR-1 antagonist vorapaxar. Further studies indicated that activation of the NLRP1 inflammasome and NF-κB mediated the effect of PAR-1 up-regulation in high glucose condition by using PAR-1 knockdown assay. In summary, this study demonstrated that Sar prevented memory impairment caused by diabetes, which was achieved through suppressing neuroinflammation from activated NLRP1 inflammasome and NF-κB regulated by cerebral PAR-1. HIGHLIGHTS: Sarsasapogenin ameliorated memory impairment caused by diabetes in rats. Sarsasapogenin mitigated neuronal damages and neuroinflammation by down-regulating cerebral PAR-1. The NLRP1 inflammasome and NF-κB signaling mediated the pro-inflammatory effects of PAR-1. Sarsasapogenin was a pleiotropic neuroprotective agent and memory enhancer in diabetic rodents.
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Affiliation(s)
- Li Kong
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yue Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yu-Meng Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yu Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Ling-Shan Gou
- Center for Genetic Medicine, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, Jiangsu, China
| | - Teng-Fei Ma
- Institute for Stem Cell and Neural Regeneration; Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Yao-Wu Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China.,Department of Pharmacology, School of Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
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Miao C, Chen H, Li Y, Guo Y, Xu F, Chen Q, Zhang Y, Hu M, Chen G. Curcumin and its analog alleviate diabetes-induced damages by regulating inflammation and oxidative stress in brain of diabetic rats. Diabetol Metab Syndr 2021; 13:21. [PMID: 33602334 PMCID: PMC7891034 DOI: 10.1186/s13098-021-00638-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 02/10/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Diabetic encephalopathy is a severe diabetes complication with cognitive dysfunction and neuropsychiatric disability. The mechanisms underlying diabetic encephalopathy is believed to be relevant with oxidative stress, vascular amylin deposition, immune receptors, inflammation, etc. This study wanted to evaluate the ability of curcumin and its analog A13 to alleviate oxidative stress and inflammation in diabetes-induced damages in brain. METHODS Sixty adult male Sprague-Dawley rats were divided into 5 groups: normal control (NC) group, diabetes mellitus (DM) group, curcumin-treated diabetes mellitus (CUR) group, high dose of A13-treated diabetes mellitus (HA) group, low dose of A13-treated diabetes mellitus (LA) group. Activation of the nuclear factor kappa-B (NF-κB p65) pathway was detected by RT-qPCR, immunohistochemical (IHC) staining and Western blot; oxidative stress was detected by biochemical detection kit; brain tissue sections were stained with hematoxylin-eosin (HE) staining and Myelin staining. RESULTS RT-qPCR, IHC staining and Western blot showed that curcumin and A13 treatment could inhibit the NF-κB p65 pathway. Curcumin and A13 increased the activity of superoxide dismutase and decreased the malondialdehyde level in the brain of diabetic rats. Furthermore, HE staining and Myelin staining demonstrated that the histological lesions of the brain in diabetic rats could be significantly ameliorated by curcumin and A13. CONCLUSION Curcumin analog A13 could alleviate the damages in the brain of diabetes rats by regulating the pathways of inflammation and oxidative stress. A13 may be a new potential therapeutic agent for diabetic encephalopathy.
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Affiliation(s)
- Chengfeng Miao
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Hanbin Chen
- Department of Radiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Yulian Li
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Ying Guo
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Feifei Xu
- Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Qi Chen
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Yanyan Zhang
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Mengjun Hu
- Department of Pathology, Zhuji People's Hospital, Shaoxing, Zhejiang, PR China.
| | - Guorong Chen
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China.
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Melatonin regulates Aβ production/clearance balance and Aβ neurotoxicity: A potential therapeutic molecule for Alzheimer's disease. Biomed Pharmacother 2020; 132:110887. [PMID: 33254429 DOI: 10.1016/j.biopha.2020.110887] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023] Open
Abstract
Alzheimer's disease (AD) is an age-related neurodegenerative disease with multiple predisposing factors and complicated pathogenesis. Aβ peptide is one of the most important pathogenic factors in the etiology of AD. Accumulating evidence indicates that the imbalance of Aβ production and Aβ clearance in the brain of AD patients leads to Aβ deposition and neurotoxic Aβ oligomer formation. Melatonin shows a potent neuroprotective effect and can prevent or slow down the progression of AD, supporting the view that melatonin is a potential therapeutic molecule for AD. Melatonin modulates the regulatory network of secretase expression and affects the function of secretase, thereby inhibiting amyloidogenic APP processing and Aβ production. Additionally, melatonin ameliorates Aβ-induced neurotoxicity and probably promotes Aβ clearance through glymphatic-lymphatic drainage, BBB transportation and degradation pathways. In this review, we summarize and discuss the role of melatonin against Aβ-dependent AD pathogenesis. We explore the potential cellular and molecular mechanisms of melatonin on Aβ production and assembly, Aβ clearance, Aβ neurotoxicity and circadian cycle disruption. We summarize multiple clinical trials of melatonin treatment in AD patients, showing that melatonin has a promising effect on improving sleep quality and cognitive function. This review aims to stimulate further research on melatonin as a potential therapeutic agent for AD.
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Korani M, Jamshidi M. The Effect of Aqueous Extract of Trachyspermum ammi Seeds and Ibuprofen on Inflammatory Gene Expression in the Cartilage Tissue of Rats with Collagen-Induced Arthritis. J Inflamm Res 2020; 13:133-139. [PMID: 32184646 PMCID: PMC7053820 DOI: 10.2147/jir.s236242] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 02/13/2020] [Indexed: 01/03/2023] Open
Abstract
Background and Objectives Rheumatoid arthritis (RA) is an inflammatory disease treated with nonsteroidal anti–inflammatory drugs that have different side effects. One of the plants used for this purpose in the traditional medicine is Trachyspermum ammi. The present study aimed at investigating the anti–inflammatory effect of this plant on type II collagen-induced arthritis (CIA) in Wistar rats. Materials and Methods The study was performed on 35 male Wistar rats. Seven rats were considered as the healthy control group (normal group), and CIA was stablished in the rest. The rats with a model of inflammatory arthritis were divided into four groups. One group did not receive any treatment and three groups were treated orally with ibuprofen (15 mg/kg), aqueous extract of the T. ammi seeds (100 mg/kg), or their combination for 30 days. The effect of different treatments was investigated on the paw thickness, arthritis score, and mRNA level of COX2 and iNOS genes. Results CIA increased paw thickness, arthritis score, and COX2 and iNOS mRNA levels compared to those of the normal group. Treatment with ibuprofen and aqueous extract alone or in combination reduced the studied variables. Reduction in the paw thickness, arthritis score, and iNOS mRNA level was more in the ibuprofen-treated group than the T. ammi extract-treated group, but treatment with T. ammi extract reduced COX2 mRNA level more than ibuprofen. Conclusion It seems that the aqueous extract of T. ammi can be used alone or in combination with ibuprofen to treat RA.
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Affiliation(s)
- Mohsen Korani
- Chemical Injuries Research Center, System Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Department of Biochemistry, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammadnabi Jamshidi
- Department of Biochemistry, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Wang B, Zhong Y, Li Q, Cui L, Huang G. Autophagy of macrophages is regulated by PI3k/Akt/mTOR signalling in the development of diabetic encephalopathy. Aging (Albany NY) 2019; 10:2772-2782. [PMID: 30346929 PMCID: PMC6224253 DOI: 10.18632/aging.101586] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 09/26/2018] [Indexed: 01/14/2023]
Abstract
The development of diabetic encephalopathy (DE) is enhanced by inflammatory macrophages, and is suppressed by macrophage autophagy. However, the molecular signaling that controls macrophage autophagy in DE remains ill-defined. Here, DE is induced in rats that received intraperitoneal injection of streptozotocin (STZ). In macrophages isolated from the brain of the rats, we detected downregulated autophagy activity and enhanced PI3k/Akt/mTOR/S6K1 signaling. In order to examine the role of autophagy and PI3k/Akt/mTOR signaling in DE development, an mTOR inhibitor, rapamycin, or an autophagy inhibitor, chloroquine (CQ), were administered to the rats that that received STZ. We found that rapamycin significantly enhanced DE development through mTOR suppression-induced augmentation of macrophage autophagy, while CQ significantly decreased DE development through suppression of macrophage autophagy. Together, our data suggest that PI3k/Akt/mTOR signaling may promote the development of DE through suppression of macrophage autophagy.
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Affiliation(s)
- Beiyun Wang
- Department of Gerontology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Yuan Zhong
- Department of Gerontology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Qinjie Li
- Department of Gerontology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Liang Cui
- Department of Gerontology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Gaozhong Huang
- Department of Priority Ward, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Tseng YT, Tsai YH, Fülöp F, Chang FR, Lo YC. 2-Iodo-4'-Methoxychalcone Attenuates Methylglyoxal-Induced Neurotoxicity by Activation of GLP-1 Receptor and Enhancement of Neurotrophic Signal, Antioxidant Defense and Glyoxalase Pathway. Molecules 2019; 24:E2249. [PMID: 31208152 PMCID: PMC6631972 DOI: 10.3390/molecules24122249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 01/06/2023] Open
Abstract
Methylglyoxal (MG) acts as a reactive precursor of advanced glycation end products (AGEs). This compound is often connected with pathologies such as diabetes, neurodegenerative processes and diseases of aging. 2-iodo-4'-methoxychalcone (CHA79), a synthetic halogen-containing chalcone derivative, has been reported its anti-diabetic activity. This study aims to investigate the potential protective capability of CHA79 against MG-mediated neurotoxicity in SH-SY5Y cells. Results indicated CHA79 increased viability of cells and attenuated the rate of apoptosis in MG-exposed SH-SY5Y. CHA79 up-regulated expression of anti-apoptotic protein (Bcl-2) and down-regulated apoptotic proteins (Bax, cytochrome c, caspase-3, caspase-9). Moreover, CHA79 significantly up-regulated expression of neurotrophic factors, including glucagon-like peptide-1 receptor (GLP-1R), brain derived neurotrophic factor (BDNF), p75NTR, p-TrkB, p-Akt, p-GK-3β and p-CREB. CHA79 attenuated MG-induced ROS production and enhanced the antioxidant defense including nuclear factor erythroid 2-related factor 2 (Nrf2), HO-1, SOD and GSH. Furthermore, CHA79 attenuated MG-induced reduction of glyoxalase-1 (GLO-1), a vital enzyme on removing AGE precursors. In conclusion, CHA79 is the first novel synthetic chalcone possessing the GLP-1R and GLO-1 activating properties. CHA 79 also exhibits neuroprotective effects against MG toxicity by enhancing neurotrophic signal, antioxidant defense and anti-apoptosis pathway.
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Affiliation(s)
- Yu-Ting Tseng
- Department of Pharmacology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
- MTA-SZTE Stereochemistry Research Group, Hungarian Academy of Sciences, Eötvös u. 6, H-6720 Szeged, Hungary.
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 11221, Taiwan.
| | - Yi-Ching Lo
- Department of Pharmacology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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Khan MA, Alam Q, Haque A, Ashafaq M, Khan MJ, Ashraf GM, Ahmad M. Current Progress on Peroxisome Proliferator-activated Receptor Gamma Agonist as an Emerging Therapeutic Approach for the Treatment of Alzheimer's Disease: An Update. Curr Neuropharmacol 2019; 17:232-246. [PMID: 30152284 PMCID: PMC6425074 DOI: 10.2174/1570159x16666180828100002] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/14/2018] [Accepted: 08/21/2018] [Indexed: 01/24/2023] Open
Abstract
Alzheimer’s disease (AD) is an age-related progressive neurodegenerative disorder, characterized by the deposition of amyloid-β within the brain parenchyma resulting in a significant decline in cognitive functions. The pathophysiological conditions of the disease are recognized by the perturbation of synaptic function, energy and lipid metabolism. In Addition deposition of amyloid plaques also triggers inflammation upon the induction of microglia. Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors known to play important role in the regulation of glucose ab-sorption, homeostasis of lipid metabolism and are further known to involved in repressing the expression of genes related to inflammation. Therefore, agonists of this receptor represent an attractive therapeutic target for AD. Recently, both clinical and preclinical studies showed that use of Peroxisome proliferator-activated receptor gamma (PPARγ) agonist improves both learning and memory along with other AD related pathology. Thus, PPARγ signifies a significant new therapeutic target in treating AD. In this review, we have shed some light on the recent progress of how, PPARγ agonist selectively modulated different cellular targets in AD and its amazing potential in the treatment of AD.
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Affiliation(s)
- Mahmood Ahmad Khan
- Department of Biochemistry, University College of Medical Sciences and GTB Hospital, University of Delhi, Dilshad Garden, Delhi 110095, India
| | - Qamre Alam
- King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Absarul Haque
- King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Mohammad Ashafaq
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Mohd Jahir Khan
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
| | - Mahboob Ahmad
- Department of Biochemistry, Hind Institute of Medical Sciences, Sitapur-2613013, India
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Liu YW, Liu XL, Kong L, Zhang MY, Chen YJ, Zhu X, Hao YC. Neuroprotection of quercetin on central neurons against chronic high glucose through enhancement of Nrf2/ARE/glyoxalase-1 pathway mediated by phosphorylation regulation. Biomed Pharmacother 2018; 109:2145-2154. [PMID: 30551472 DOI: 10.1016/j.biopha.2018.11.066] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/11/2018] [Accepted: 11/19/2018] [Indexed: 01/16/2023] Open
Abstract
Although dietary flavonoid quercetin alleviates diabetes-associated cognitive decline in rodents, the mechanisms are not clearly clarified. This study was designed to investigate whether quercetin showed neuroprotection on central neurons against chronic high glucose through the enhancement of Nrf2/ARE/glyoxalase 1 (Glo-1) pathway. SH-SY5Y cells were divided into 8 groups: normal glucose, high glucose (HG), osmotic pressure control, solvent control, HG plus low, middle, high concentrations of quercetin, or Nrf2 activator (sulforaphane). After treatment for 72 h, the associated parameters were measured. We found quercetin and sulforaphane increased cell viability, and enhanced Glo-1 functions (Glo-1 activity, the reduced glutathione and advanced glycation end-products levels) as well as Glo-1 protein and mRNA levels in SH-SY5Y cells cultured with HG. Meanwhile, quercetin and sulforaphane activated Nrf2/ARE pathway, reflected by the raised Nrf2 and p-Nrf2 levels, and the elevated protein and mRNA levels of γ-glutamycysteine synthase (γ-GCS), a known target gene of Nrf2/ARE signaling. Moreover, Nrf2/ARE pathway was activated after pretreatment with a PKC activator, p38 MAPK inhibitor, or GSK-3β inhibitor under the condition of HG, and quercetin addition further strengthened this pathway; however, PKC inhibition or GSK-3β activation pretreatment reversed the effects of quercetin on the protein expression of γ-GCS in the HG condition. In summary, quercetin exerts the neuroprotection by enhancing Glo-1 functions in central neurons under chronic HG condition, which may be mediated by activation of Nrf2/ARE pathway; furthermore, the increased Nrf2 phosphorylation mediated by PKC activation and/or GSK-3β inhibition may involve in the activation of Nrf2/ARE pathway.
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Affiliation(s)
- Yao-Wu Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; Department of Pharmacology, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China.
| | - Xiao-Li Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China; Department of Pharmacy, the Second People's Hospital of Wuhu, Anhui, China
| | - Li Kong
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Meng-Ya Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Ya-Jing Chen
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Xia Zhu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
| | - Yun-Chao Hao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
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Li H, Luo Y, Xu Y, Yang L, Hu C, Chen Q, Yang Y, Ma J, Zhang J, Xia H, Li Y, Yang J. Meloxicam Improves Cognitive Impairment of Diabetic Rats through COX2-PGE2-EPs-cAMP/pPKA Pathway. Mol Pharm 2018; 15:4121-4131. [PMID: 30109938 DOI: 10.1021/acs.molpharmaceut.8b00532] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Diabetics often face greater risk of cognitive impairment than nondiabetics. However, how to prevent this disease is still unconfirmed. In this study, we investigated the potential protection and mechanism of meloxicam on cognitive impairment in diabetic rats. The diabetic rat model was established with a high-fat diet and a small dose of streptozotocin (40 mg/kg). The changes of spatial learning and memory, histopathology, and the protein expressions of amyloid protein precursor (APP) and β-amyloid (Aβ) indicated that diabetic rats had neuronal injury and cognitive impairment. Tumor necrosis factor α (TNFα), interleukin 6 (IL-6), C reactive protein (CRP) and prostaglandin E2 (PGE2) levels, and microglial cell number were significantly increased in the diabetic rat brain. Meanwhile, the protein expressions of APP, Aβ, cyclooxygenases2 (COX2), E-type prostanoid recptors 1 (EP1) and EP2, and the level of cyclic adenosine monophosphate (cAMP) were significantly increased, while the protein expressions of EP3 and phosphorylated protein kinase A (pPKA) were significantly decreased in the diabetic rat hippocampus and cortex. However, the EP4 protein expression had no significant changes. Meloxicam significantly improved neuronal injury and cognitive impairment, and significantly decreased inflammatory cytokines levels. Meloxicam also significantly decreased the protein expressions of APP, Aβ, COX2, EP1 and EP2, and the level of cAMP and significantly increased the EP3 and pPKA protein expressions in rat hippocampus and cortex. However, meloxicam did not significantly influence the levels of blood glucose, lipids, and insulin of rats. Our results suggest that meloxicam could significantly protect diabetic rats from cognitive impairment via a mechanism that may be associated with rebalancing the COX2-PGE2-EPs-cAMP/PKA pathway.
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Affiliation(s)
- Huan Li
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Ying Luo
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Ying Xu
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences , State University of New York at Buffalo , Buffalo , New York 14214 , United States
| | - Lu Yang
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Congli Hu
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Qi Chen
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Yang Yang
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Jie Ma
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Jiahua Zhang
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Hui Xia
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Yuke Li
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
| | - Junqing Yang
- The Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology , Chongqing Medical University , Chongqing 400016 , China
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Zhu X, Cheng YQ, Lu Q, Du L, Yin XX, Liu YW. Enhancement of glyoxalase 1, a polyfunctional defense enzyme, by quercetin in the brain in streptozotocin-induced diabetic rats. Naunyn Schmiedebergs Arch Pharmacol 2018; 391:1237-1245. [DOI: 10.1007/s00210-018-1543-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/18/2018] [Indexed: 12/14/2022]
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15
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Sarsasapogenin suppresses Aβ overproduction induced by high glucose in HT-22 cells. Naunyn Schmiedebergs Arch Pharmacol 2017; 391:159-168. [DOI: 10.1007/s00210-017-1445-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 11/27/2017] [Indexed: 12/24/2022]
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16
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Song Y, Zhang F, Ying C, Kumar KA, Zhou X. Inhibition of NF-κB activity by aminoguanidine alleviates neuroinflammation induced by hyperglycemia. Metab Brain Dis 2017. [PMID: 28634786 DOI: 10.1007/s11011-017-0013-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Neuroinflammation is a key feature of cerebral complication which is associated with diabetes mellitus (DM). Inducible nitric oxide synthase (iNOS) is implicated in the pathogenesis of neuroinflammation. However, how iNOS facilitates the development of inflammation in brain is still unidentified. The aim of the present study was to investigate the association of iNOS and neuroinflammation in diabetic mice, and elucidate the potential mechanisms underlying aminoguanidine (AG), the selective inhibitor of iNOS, protected neurons against inflammation in diabetic mice. In present experiment, diabetic mice model were established by a single intraperitoneal injection of streptozotocin (STZ). AG was administered to diabetic mice for ten weeks after this disease induction. Then we measured iNOS activity in the serum and brain, detected the glial fibrillary acidic protein (GFAP) and ionised calcium binding adaptor molecule-1 (Iba-1) expressions in the brain. Moreover, nuclear factor-kappa B (NF-κB) in cytoplasm and nucleus were tested by IP and WB. Results revealed that high expression of iNOS in serum and brain could be reversed by AG treatment. Furthermore, AG could also inhibit GFAP and Iba-1 expressions, and NF-κB nuclear translocation by inhibiting it from binding to iNOS in cytoplasm. Our findings indicated that iNOS can combine with NF-κB in cytoplasm and promote its nuclear transfer in diabetic mice. Furthermore, AG decreased neuroinflammation through inhibiting iNOS activity and reducing NF-κB nuclear translocation by promoting its dissociation with iNOS in cytoplasm.
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Affiliation(s)
- Yuanjian Song
- Department of Genetics, Research Facility Center for Morphology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, People's Republic of China
| | - Fang Zhang
- Department of Genetics, Research Facility Center for Morphology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, People's Republic of China
| | - Changjiang Ying
- Department of Endocrinology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, 221002, People's Republic of China
| | - Kiran Ashok Kumar
- Department of Clinical Medicine, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, People's Republic of China
| | - Xiaoyan Zhou
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, People's Republic of China.
- Laboratory of Morphology, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu, 221004, People's Republic of China.
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17
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The Research on the Relationship of RAGE, LRP-1, and Aβ Accumulation in the Hippocampus, Prefrontal Lobe, and Amygdala of STZ-Induced Diabetic Rats. J Mol Neurosci 2017; 62:1-10. [PMID: 28401370 DOI: 10.1007/s12031-017-0892-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 01/24/2017] [Indexed: 01/02/2023]
Abstract
Diabetes mellitus (DM) has been regarded as an important risk factor for Alzheimer's disease (AD), and diabetic patients and animals have shown cognitive dysfunction. More research has shown that the amyloid-β (Aβ), which is a hallmark of AD, was found deposited in the hippocampus of diabetic rats. This Aβ accumulation is regulated by the receptor for advanced glycation end products (RAGE) and low-density lipoprotein receptor-related protein (LRP-1). However, the expression of RAGE and LRP-1 in diabetic rats is not very clear. In the present study, we used streptozotocin (STZ)-induced diabetic rats to investigate whether the expression of RAGE and LRP-1 is related to Aβ1-42 deposition at the hippocampus, prefrontal lobe, and amygdala in DM. We found that diabetic rats had longer escape latency and less frequency of entrance into the target zone than that of the control group (P < 0.05) in the Morris water maze (MWM) test. The Aβ1-42 expression in the hippocampus and prefrontal lobe significantly increased in the DM group compared to the control group (P < 0.05). RAGE increased (P < 0.05), while LRP-1 decreased (P < 0.05) in the hippocampus tissue and prefrontal lobe tissue of DM rats. The Aβ1-42 deposition was correlated with RAGE positively (P < 0.05), but with LRP-1 negatively (P < 0.05). Further, the expression levels of Aβ1-42, RAGE, and LRP-1 were not changed in the amygdala between the diabetic rats and the control group. These findings indicated that upregulating RAGE and/or downregulating LRP-1 at the hippocampus and the prefrontal lobe contributed to the Aβ1-42 accumulation and then further promoted the cognitive impairment of diabetic rats.
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18
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Inhibition of iNOS alleviates cognitive deficits and depression in diabetic mice through downregulating the NO/sGC/cGMP/PKG signal pathway. Behav Brain Res 2017; 322:70-82. [DOI: 10.1016/j.bbr.2016.12.046] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/30/2016] [Accepted: 12/31/2016] [Indexed: 12/21/2022]
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19
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Protective effects of Huanglian Wendan Decoction aganist cognitive deficits and neuronal damages in rats with diabetic encephalopathy by inhibiting the release of inflammatory cytokines and repairing insulin signaling pathway in hippocampus. Chin J Nat Med 2017; 14:813-822. [PMID: 27914525 DOI: 10.1016/s1875-5364(16)30098-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Indexed: 12/28/2022]
Abstract
Huanglian Wendan decoction (HLWDD) has been used for the treatment of symptom of "Re", one of major causes in diabetes and metabolic disorders, according to the theory of traditional Chinese medicine. The present study aimed at investigating the cerebral protective effects of HLWDD on diabetic encephalopathy (DE), one of the major diabetic complications. The effects of HLWDD and metformin were analyzed in the streptozocin (STZ) + high-glucose-fat (HGF) diet-induced DE rats by gastric intubation. In the present study, the effects of HLWDD on cognition deficits were investigated after 30-day intervention at two daily dose levels (3 and 6 g·kg-1). To explore the potential mechanisms underlying the effects of HLWDD, we detected the alterations of neuronal damages, inflammatory cytokines, and impaired insulin signaling pathway in hippocampus of the DE rats. Based on our results from the present study, we concluded that the protective effects of HLWDD against the cognitive deficits and neuronal damages through inhibiting the release of inflammatory cytokines and repairing insulin signaling pathway in hippocampus of the DE rats.
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Moro MG, Sanchez PKV, Gevert MV, Baller EM, Tostes AF, Lupepsa AC, Baglie S, Franco GCN. Gastric and renal effects of COX-2 selective and non-selective NSAIDs in rats receiving low-dose aspirin therapy. Braz Oral Res 2016; 30:e127. [PMID: 27901208 DOI: 10.1590/1807-3107bor-2016.vol30.0127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 09/22/2016] [Indexed: 01/26/2023] Open
Abstract
The consumption of low-dose aspirin (LDA) to prevent cardiovascular disease continues to increase worldwide. Consequently, the number of chronic LDA users seeking dental procedures that require complementary acute anti-inflammatory medication has also grown. Considering the lack of literature evaluating this interaction, we analyzed the gastric and renal effects caused by a selective COX-2 inhibitor (etoricoxib) and a non-selective COX-2 inhibitor (ibuprofen) nonsteroidal anti-inflammatory drug (NSAID) in rats receiving chronic LDA therapy. Male Wistar rats were divided into six experimental groups (carboxymethylcellulose (CMC) - vehicle; LDA; LDA + ibuprofen; ibuprofen; LDA + etoricoxib; and etoricoxib) and submitted to long-term LDA therapy with a subsequent NSAID administration for three days by gavage. After the experimental period, we analyzed gastric and renal tissues and quantified serum creatinine levels. The concomitant use of LDA with either NSAID induced the highest levels of gastric damage when compared to the CMC group (F = 20.26, p < 0.05). Treatment with either LDA or etoricoxib alone was not associated with gastric damage. No significant damage was observed on kidney morphology and function (F = 0.5418, p > 0.05). These results suggest that even the acute use of an NSAID (regardless of COX-2 selectivity) can induce gastric damage when combined with the long-term use of low-dose aspirin in an animal model. Additional studies, including clinical assessments, are thus needed to clarify this interaction, and clinicians should be careful of prescribing NSAIDs to patients using LDA.
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Affiliation(s)
- Marcella Goetz Moro
- Universidade Estadual de Ponta Grossa - UEPG, Department of Dentistry, Ponta Grossa, PR, Brazil
| | | | - Mayara Vitorino Gevert
- Universidade Estadual de Ponta Grossa - UEPG, Department of Dentistry, Ponta Grossa, PR, Brazil
| | - Emeline Maria Baller
- Universidade Estadual de Ponta Grossa - UEPG, Department of Pharmaceutical Sciences, Ponta Grossa, PR, Brazil
| | - Ana Flávia Tostes
- Universidade Estadual de Ponta Grossa - UEPG, Department of Pharmaceutical Sciences, Ponta Grossa, PR, Brazil
| | - Ana Caroline Lupepsa
- Universidade Estadual de Ponta Grossa - UEPG, Department of Pharmaceutical Sciences, Ponta Grossa, PR, Brazil
| | - Sinvaldo Baglie
- Universidade Estadual de Ponta Grossa - UEPG, Department of Pharmaceutical Sciences, Ponta Grossa, PR, Brazil
| | - Gilson Cesar Nobre Franco
- Universidade Estadual de Ponta Grossa - UEPG, Department of General Biology, Ponta Grossa, Paraná - Brazil
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21
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da Silva Dias IC, Carabelli B, Ishii DK, de Morais H, de Carvalho MC, Rizzo de Souza LE, Zanata SM, Brandão ML, Cunha TM, Ferraz AC, Cunha JM, Zanoveli JM. Indoleamine-2,3-Dioxygenase/Kynurenine Pathway as a Potential Pharmacological Target to Treat Depression Associated with Diabetes. Mol Neurobiol 2015; 53:6997-7009. [PMID: 26671617 DOI: 10.1007/s12035-015-9617-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 12/07/2015] [Indexed: 12/20/2022]
Abstract
Diabetes is a chronic disease associated with depression whose pathophysiological mechanisms that associate these conditions are not fully elucidated. However, the activation of the indoleamine-2,3-dioxygenase (IDO), an enzyme that participate of the tryptophan metabolism leading to a decrease of serotonin (5-HT) levels and whose expression is associated with an immune system activation, has been proposed as a common mechanism that links depression and diabetes. To test this hypothesis, diabetic (DBT) and normoglycemic (NGL) groups had the cytokines (TNFα, IL-1β, and IL-6) and 5-HT and norepinephrine (NE) levels in the hippocampus (HIP) evaluated. Moreover, the effect of the selective serotonin reuptake inhibitor fluoxetine (FLX), IDO direct inhibitor 1-methyl-tryptophan (1-MT), anti-inflammatory and IDO indirect inhibitor minocycline (MINO), or non-selective cyclooxygenase inhibitor ibuprofen (IBU) was evaluated in DBT rats submitted to the modified forced swimming test (MFST). After the behavioral test, the HIP was obtained for IDO expression by Western blotting analysis. DBT rats exhibited a significant increase in HIP levels of TNFα, IL-1β, and IL-6 and a decrease in HIP 5-HT and NA levels. They also presented a depressive-like behavior which was reverted by all employed treatments. Interestingly, treatment with MINO, IBU, or FLX but not with 1-MT reduced the increased IDO expression in the HIP from DBT animals. Taken together, our data support our hypothesis that neuroinflammation in the HIP followed by IDO activation with a consequent decrease in the 5-HT levels can be a possible pathophysiological mechanism that links depression to diabetes.
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Affiliation(s)
- Isabella Caroline da Silva Dias
- Department of Pharmacology, Federal University of Paraná, Rua Coronel H dos Santos S/N, P.O. Box 19031, Curitiba, PR, 81540-990, Brazil
| | - Bruno Carabelli
- Department of Physiology, Federal University of Paraná, Curitiba, PR, 81540-990, Brazil
| | - Daniela Kaori Ishii
- Department of Pharmacology, Federal University of Paraná, Rua Coronel H dos Santos S/N, P.O. Box 19031, Curitiba, PR, 81540-990, Brazil
| | - Helen de Morais
- Department of Pharmacology, Federal University of Paraná, Rua Coronel H dos Santos S/N, P.O. Box 19031, Curitiba, PR, 81540-990, Brazil
| | - Milene Cristina de Carvalho
- Institute of Neurosciences and Behavior (INeC) and Laboratory of Neuropsychopharmacology of Faculty of Philosophy, Sciences and Letters of University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Luiz E Rizzo de Souza
- Department of Basic Pathology, Laboratory of Neurobiology, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Silvio M Zanata
- Department of Basic Pathology, Laboratory of Neurobiology, Federal University of Paraná, Curitiba, PR, 81531-990, Brazil
| | - Marcus Lira Brandão
- Institute of Neurosciences and Behavior (INeC) and Laboratory of Neuropsychopharmacology of Faculty of Philosophy, Sciences and Letters of University of São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Thiago Mattar Cunha
- Department of Pharmacology, Faculty of Medicine, University of São Paulo, Ribeirão Preto, SP, 14049-900, Brazil
| | - Anete Curte Ferraz
- Department of Physiology, Federal University of Paraná, Curitiba, PR, 81540-990, Brazil
| | - Joice Maria Cunha
- Department of Pharmacology, Federal University of Paraná, Rua Coronel H dos Santos S/N, P.O. Box 19031, Curitiba, PR, 81540-990, Brazil
| | - Janaina Menezes Zanoveli
- Department of Pharmacology, Federal University of Paraná, Rua Coronel H dos Santos S/N, P.O. Box 19031, Curitiba, PR, 81540-990, Brazil.
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Anti-inflammatory Effect of Astaxanthin on the Sickness Behavior Induced by Diabetes Mellitus. Cell Mol Neurobiol 2015; 35:1027-37. [DOI: 10.1007/s10571-015-0197-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 04/14/2015] [Indexed: 12/17/2022]
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23
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Sanchez-Vega L, Juárez I, De Jesus Gomez-Villalobos M, Flores G. Cerebrolysin reverses hippocampal neural atrophy in a mice model of diabetes mellitus type 1. Synapse 2015; 69:326-35. [DOI: 10.1002/syn.21819] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/29/2015] [Accepted: 03/22/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Lizzette Sanchez-Vega
- Laboratorio De Neuropsiquiatría; Instituto De Fisiología, Universidad Autónoma De Puebla; Puebla México
| | - Ismael Juárez
- Facultad De Estomatología; Universidad Autónoma De Puebla; Puebla México
| | | | - Gonzalo Flores
- Laboratorio De Neuropsiquiatría; Instituto De Fisiología, Universidad Autónoma De Puebla; Puebla México
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24
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Qiao W, Wang C, Chen B, Zhang F, Liu Y, Lu Q, Guo H, Yan C, Sun H, Hu G, Yin X. Ibuprofen attenuates cardiac fibrosis in streptozotocin-induced diabetic rats. Cardiology 2015; 131:97-106. [PMID: 25896805 DOI: 10.1159/000375362] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 01/16/2015] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate the effects of ibuprofen on cardiac fibrosis in a rat model of type 1 diabetes. METHODS The diabetic model was established by injecting streptozotocin into the rats. Then, ibuprofen or pioglitazone was given by gavage for 8 weeks. The cardiac fibrosis was assessed, and the major components of the renin-angiotensin system, the transforming growth factor β1 (TGF-β1) and the mammalian target of rapamycin (mTOR), were evaluated by histopathological, immunohistochemical, Western blot analysis or ELISA assay. RESULTS Obvious cardiac fibrosis was detected in the diabetic group and was alleviated by ibuprofen treatment. Angiotensin-converting enzyme (ACE), angiotensin (Ang) II and AngII type 1 receptor (AT1-R) levels were higher, and ACE2, Ang(1-7) and Mas receptor (Mas-R) were lower in the diabetic group. The ratio of ACE to ACE2 was raised in the diabetic group. All these changes were ameliorated by ibuprofen. TGF-β1 and mTOR were raised in the hearts of the diabetic group and were attenuated by ibuprofen treatment. There was no significant difference between the ibuprofen and the pioglitazone groups. CONCLUSION Ibuprofen could ameliorate the cardiac fibrosis in diabetic rats by reduction of the ACE/AngII/AT1-R axis and enhancement of the ACE2/Ang(1-7)/Mas-R axis, leading to a decrease in TGF-β1 and mTOR.
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Affiliation(s)
- Weili Qiao
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Nanjing Medical University, Nanjing, China
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