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Su X, Li Q, Yang M, Zhang W, Liu X, Ba Y, Deng Q, Zhang Y, Han L, Huang H. Resveratrol protects against a high-fat diet-induced neuroinflammation by suppressing mitochondrial fission via targeting SIRT1/PGC-1α. Exp Neurol 2024; 380:114899. [PMID: 39059737 DOI: 10.1016/j.expneurol.2024.114899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 06/27/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Various health issues have emerged due to consuming high-fat diets (HFD), particularly the detrimental impact they have on mitochondrial dynamics and subsequet cognition functions. Specially, mitochondrial fission can serve as an upstream signal in the regulation of cortical inflammation and neural pyroptosis. Our study was designed to verify the existence of neuroinflammation in the pathogenesis of HFD-induced cognitive dysfunction and demonstrated that resveratrol (RSV) attenuated neural deficits via regulation of cortical mitochondrial fission. A total of 50 male Sprague Dawley rats were randomly divided into five groups: control (Cont, 26 weeks on normal rodent diet); high-fat diet (HFD); dietary adjustments (HFD + ND); resveratrol intervention (HFD + R); joint intervention (HFD + ND + R) for 26 weeks. The spatial learning and memory function, spine density, NLRP3 inflammasome associated protein, mRNA and protein expression involved in mitochondrial dynamics and SIRT1/PGC-1α signaling pathway in brain were measured. Furthermore, reactive oxygen species (ROS) accumulation and resultant mitochondrial membrane potential (MMP) alteration in PC12 cells exposed to palmitic acid (PA) or Drp1 inhibitor (Mdivi-1) were detected to reflect mitochondrial function. The findings suggested that prolonged treatment of RSV improved cognitive deficits and neuronal damage induced by HFD, potentially attributed to activation of the SIRT1/PGC-1α axis. We further indicated that the activation of the NLRP3 inflammasome in PA (200 μM) treated PC12 cells could be inhibited by Mdivi-1. More importantly, Mdivi-1 (10 μM) reduced intracellular ROS levels and enhanced MMP by reversing Drp1-mediated aberrant mitochondrial fission. To summarize, those results clearly indicated that a HFD inhibited the SIRT1/PGC-1α pathway, which contributed to an imbalance in mitochondrial dynamics and the onset of NLRP3-mediated pyroptosis. This effect was mitigated by the RSV possibly through triggering the SIRT1/PGC-1α axis, prevented aberrant mitochondrial fission and thus inhibited the activation of the NLRP3 inflammatory pathway.
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Affiliation(s)
- Xiao Su
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Qiong Li
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Mingzhi Yang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Wenhui Zhang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Xiaoxue Liu
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Yue Ba
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Qihong Deng
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China
| | - Yu Zhang
- State Key Laboratory of Microbial Technology, Qingdao, Shandong 266000, China; Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266000, China; Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, Shandong 250100, China
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, Shandong 266000, China; Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, Shandong 250100, China
| | - Hui Huang
- Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China; Environment and Health Innovation Team, College of Public Health, Zhengzhou University, Zhengzhou, Henan province 450001, China.
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Oo TT, Pratchayasakul W, Chattipakorn K, Siri-Angkul N, Choovuthayakorn J, Charumporn T, Ongnok B, Arunsak B, Chunchai T, Kongkaew A, Songtrai S, Kaewsuwan S, Chattipakorn N, Chattipakorn S. Cyclosorus Terminans Extract Alleviates Neuroinflammation in Insulin Resistant Rats. Mol Neurobiol 2024; 61:4879-4890. [PMID: 38148371 DOI: 10.1007/s12035-023-03883-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023]
Abstract
High-fat diet consumption for an extended period causes obesity, systemic metabolic disturbance, and brain insulin resistance, resulting in neuroinflammation. Although the beneficial effect of Cyclosorus terminans extract on obesity-related insulin resistance has been demonstrated, little is known about how it affects neuroinflammation and brain insulin resistance in obese rats. Male Wistar rats were given either a normal diet (ND, n = 6) or a high-fat diet (HFD, n = 24) for a total of 14 weeks. At the beginning of the week, 13 rats in the ND group were given vehicle orally for 2 weeks, while rats on HFD diets were randomized to one of four groups and given either vehicle, 100 mg/kg/day of Cyclosorus terminans extract, 200 mg/kg/day of Cyclosorus terminans extract, or 20 mg/kg/day of pioglitazone orally for 2 weeks. After the experimental period, blood and brain samples were taken to assess metabolic and brain parameters. HFD-fed rats had obesity, systemic and brain insulin resistance, brain inflammation, microglial and astrocyte hyperactivity, and brain necroptosis. Treatment with 200 mg/kg/day of Cyclosorus terminans extract and pioglitazone equally attenuated obesity, insulin resistance, brain insulin dysfunction, and neuroinflammation in insulin resistant rats. Our findings suggest that Cyclosorus terminans extract may hold promise as a therapeutic agent for insulin resistance and neuroinflammation in obese conditions.
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Affiliation(s)
- Thura Tun Oo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kenneth Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Natthapat Siri-Angkul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jirachaya Choovuthayakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Thanapat Charumporn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Benjamin Ongnok
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Busarin Arunsak
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Titikorn Chunchai
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Aphisek Kongkaew
- Research Administration Section, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Sujinda Songtrai
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Sireewan Kaewsuwan
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.
- Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
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Mohammed OA, Youssef ME, Doghish AS, Hamad RS, Abdel-Reheim MA, Alghamdi M, Alamri MMS, Alfaifi J, Adam MIE, Alharthi MH, Alhalafi AH, Bahashwan E, Rezigalla AA, BinAfif DF, Abdel-Ghany S, Attia MA, Elmorsy EA, Al-Noshokaty TM, Fikry H, Saleh LA, Saber S. A novel combination therapy targets sonic hedgehog signaling by the dual inhibition of HMG-CoA reductase and HSP90 in rats with non-alcoholic steatohepatitis. Eur J Pharm Sci 2024; 198:106792. [PMID: 38714237 DOI: 10.1016/j.ejps.2024.106792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 05/09/2024]
Abstract
Non-alcoholic steatohepatitis (NASH) is characterized by liver inflammation, fat accumulation, and collagen deposition. Due to the limited availability of effective treatments, there is a pressing need to develop innovative strategies. Given the complex nature of the disease, employing combination approaches is essential. Hedgehog signaling has been recognized as potentially promoting NASH, and cholesterol can influence this signaling by modifying the conformation of PTCH1 and SMO activity. HSP90 plays a role in the stability of SMO and GLI proteins. We revealed significant positive correlations between Hedgehog signaling proteins (Shh, SMO, GLI1, and GLI2) and both cholesterol and HSP90 levels. Herein, we investigated the novel combination of the cholesterol-lowering agent lovastatin and the HSP90 inhibitor PU-H71 in vitro and in vivo. The combination demonstrated a synergy score of 15.09 and an MSA score of 22.85, as estimated by the ZIP synergy model based on growth inhibition rates in HepG2 cells. In a NASH rat model induced by thioacetamide and a high-fat diet, this combination therapy extended survival, improved liver function and histology, and enhanced antioxidant defense. Additionally, the combination exhibited anti-inflammatory and anti-fibrotic potential by influencing the levels of TNF-α, TGF-β, TIMP-1, and PDGF-BB. This effect was evident in the suppression of the Col1a1 gene expression and the levels of hydroxyproline and α-SMA. These favorable outcomes may be attributed to the combination's potential to inhibit key Hedgehog signaling molecules. In conclusion, exploring the applicability of this combination contributes to a more comprehensive understanding and improved management of NASH and other fibrotic disorders.
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Affiliation(s)
- Osama A Mohammed
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt; Department of Pharmacology, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia.
| | - Mahmoud E Youssef
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo, 11829, Egypt; Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Al-Azhar University, Nasr City, Cairo 11231, Egypt.
| | - Rabab S Hamad
- Biological Sciences Department, College of Science, King Faisal University, Al Ahsa 31982, Saudi Arabia; Central Laboratory, Theodor Bilharz Research Institute, Giza 12411, Egypt.
| | - Mustafa Ahmed Abdel-Reheim
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef 62521, Egypt.
| | - Mushabab Alghamdi
- Department of Internal Medicine, Division of Rheumatology, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mohannad Mohammad S Alamri
- Department of Family and Community Medicine, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Jaber Alfaifi
- Department of Child Health, College of Medicine, University of Bisha, Bisha, 61922, Saudi Arabia
| | - Masoud I E Adam
- Department of Medical Education and Internal Medicine, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Muffarah Hamid Alharthi
- Department of Family and Community Medicine, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Abdullah Hassan Alhalafi
- Department of Family and Community Medicine, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Emad Bahashwan
- Department of Internal Medicine, Division of Dermatology, College of medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Assad Ali Rezigalla
- Department of Anatomy, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Daad Fuad BinAfif
- Department of Medicine, King Abdullah Medical City, Makkah 24246, Saudi Arabia
| | - Sameh Abdel-Ghany
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; Department of basic medical sciences, Ibn Sina University for medical sciences, Amman 16197, Jordan
| | - Mohammed A Attia
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh 11597, Saudi Arabia
| | - Elsayed A Elmorsy
- Department of Pharmacology and Therapeutics, College of Medicine, Qassim University, Saudi Arabia; Clinical Pharmacology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt.
| | - Tohada M Al-Noshokaty
- Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt
| | - Heba Fikry
- Department of Histology and Cell Biology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt
| | - Lobna A Saleh
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt; Department of Pharmacology and Toxicology, Collage of Pharmacy, Taif University, Taif 21944, Saudi Arabia
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
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Kobroob A, Kumfu S, Chattipakorn N, Wongmekiat O. Modulation of Sirtuin 3 by N-Acetylcysteine Preserves Mitochondrial Oxidative Phosphorylation and Restores Bisphenol A-Induced Kidney Damage in High-Fat-Diet-Fed Rats. Curr Issues Mol Biol 2024; 46:4935-4950. [PMID: 38785564 PMCID: PMC11119914 DOI: 10.3390/cimb46050296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024] Open
Abstract
Bisphenol A (BPA) and high-fat diets (HFD) are known to adversely affect the kidneys. However, the combined effects of both cases on kidney health and the potential benefits of N-acetylcysteine (NAC) in mitigating these effects have not been investigated. To explore these aspects, male Wistar rats were fed with HFD and allocated to receive a vehicle or BPA. At week twelve, the BPA-exposed rats were subdivided to receive a vehicle or NAC along with BPA until week sixteen. Rats fed HFD and exposed to BPA showed renal dysfunction and structural abnormalities, oxidative stress, inflammation, and mitochondrial dysfunction, with alterations in key proteins related to mitochondrial oxidative phosphorylation (OXPHOS), bioenergetics, oxidative balance, dynamics, apoptosis, and inflammation. Treatment with NAC for 4 weeks significantly improved these conditions. The findings suggest that NAC is beneficial in protecting renal deterioration brought on by prolonged exposure to BPA in combination with HFD, and modulation of sirtuin 3 (SIRT3) signaling by NAC appears to play a key role in the preservation of homeostasis and integrity within the mitochondria by enhancing OXPHOS activity, maintaining redox balance, and reducing inflammation. This study provides valuable insights into potential therapeutic strategies for preserving kidney health in the face of environmental and dietary challenges.
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Affiliation(s)
- Anongporn Kobroob
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao 56000, Thailand;
| | - Sirinart Kumfu
- Cardiac Electrophysiology Research and Training Center, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (N.C.)
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; (S.K.); (N.C.)
| | - Orawan Wongmekiat
- Integrative Renal Research Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
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Chiarini A, Gui L, Viviani C, Armato U, Dal Prà I. NLRP3 Inflammasome’s Activation in Acute and Chronic Brain Diseases—An Update on Pathogenetic Mechanisms and Therapeutic Perspectives with Respect to Other Inflammasomes. Biomedicines 2023; 11:biomedicines11040999. [PMID: 37189617 DOI: 10.3390/biomedicines11040999] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023] Open
Abstract
Increasingly prevalent acute and chronic human brain diseases are scourges for the elderly. Besides the lack of therapies, these ailments share a neuroinflammation that is triggered/sustained by different innate immunity-related protein oligomers called inflammasomes. Relevant neuroinflammation players such as microglia/monocytes typically exhibit a strong NLRP3 inflammasome activation. Hence the idea that NLRP3 suppression might solve neurodegenerative ailments. Here we review the recent Literature about this topic. First, we update conditions and mechanisms, including RNAs, extracellular vesicles/exosomes, endogenous compounds, and ethnic/pharmacological agents/extracts regulating NLRP3 function. Second, we pinpoint NLRP3-activating mechanisms and known NLRP3 inhibition effects in acute (ischemia, stroke, hemorrhage), chronic (Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, MS, ALS), and virus-induced (Zika, SARS-CoV-2, and others) human brain diseases. The available data show that (i) disease-specific divergent mechanisms activate the (mainly animal) brains NLRP3; (ii) no evidence proves that NLRP3 inhibition modifies human brain diseases (yet ad hoc trials are ongoing); and (iii) no findings exclude that concurrently activated other-than-NLRP3 inflammasomes might functionally replace the inhibited NLRP3. Finally, we highlight that among the causes of the persistent lack of therapies are the species difference problem in disease models and a preference for symptomatic over etiologic therapeutic approaches. Therefore, we posit that human neural cell-based disease models could drive etiological, pathogenetic, and therapeutic advances, including NLRP3’s and other inflammasomes’ regulation, while minimizing failure risks in candidate drug trials.
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Obesity-Induced Brain Neuroinflammatory and Mitochondrial Changes. Metabolites 2023; 13:metabo13010086. [PMID: 36677011 PMCID: PMC9865135 DOI: 10.3390/metabo13010086] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023] Open
Abstract
Obesity is defined as abnormal and excessive fat accumulation, and it is a risk factor for developing metabolic and neurodegenerative diseases and cognitive deficits. Obesity is caused by an imbalance in energy homeostasis resulting from increased caloric intake associated with a sedentary lifestyle. However, the entire physiopathology linking obesity with neurodegeneration and cognitive decline has not yet been elucidated. During the progression of obesity, adipose tissue undergoes immune, metabolic, and functional changes that induce chronic low-grade inflammation. It has been proposed that inflammatory processes may participate in both the peripheral disorders and brain disorders associated with obesity, including the development of cognitive deficits. In addition, mitochondrial dysfunction is related to inflammation and oxidative stress, causing cellular oxidative damage. Preclinical and clinical studies of obesity and metabolic disorders have demonstrated mitochondrial brain dysfunction. Since neuronal cells have a high energy demand and mitochondria play an important role in maintaining a constant energy supply, impairments in mitochondrial activity lead to neuronal damage and dysfunction and, consequently, to neurotoxicity. In this review, we highlight the effect of obesity and high-fat diet consumption on brain neuroinflammation and mitochondrial changes as a link between metabolic dysfunction and cognitive decline.
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Smiley CE, Wood SK. Stress- and drug-induced neuroimmune signaling as a therapeutic target for comorbid anxiety and substance use disorders. Pharmacol Ther 2022; 239:108212. [PMID: 35580690 DOI: 10.1016/j.pharmthera.2022.108212] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 10/18/2022]
Abstract
Stress and substance use disorders remain two of the most highly prevalent psychiatric conditions and are often comorbid. While individually these conditions have a debilitating impact on the patient and a high cost to society, the symptomology and treatment outcomes are further exacerbated when they occur together. As such, there are few effective treatment options for these patients, and recent investigation has sought to determine the neural processes underlying the co-occurrence of these disorders to identify novel treatment targets. One such mechanism that has been linked to stress- and addiction-related conditions is neuroimmune signaling. Increases in inflammatory factors across the brain have been heavily implicated in the etiology of these disorders, and this review seeks to determine the nature of this relationship. According to the "dual-hit" hypothesis, also referred to as neuroimmune priming, prior exposure to either stress or drugs of abuse can sensitize the neuroimmune system to be hyperresponsive when exposed to these insults in the future. This review completes an examination of the literature surrounding stress-induced increases in inflammation across clinical and preclinical studies along with a summarization of the evidence regarding drug-induced alterations in inflammatory factors. These changes in neuroimmune profiles are also discussed within the context of their impact on the neural circuitry responsible for stress responsiveness and addictive behaviors. Further, this review explores the connection between neuroimmune signaling and susceptibility to these conditions and highlights the anti-inflammatory pharmacotherapies that may be used for the treatment of stress and substance use disorders.
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Affiliation(s)
- Cora E Smiley
- Department of Pharmacology, Physiology, and Neuroscience; University of South Carolina School of Medicine, Columbia, SC 29209, United States of America; WJB Dorn Veterans Administration Medical Center, Columbia, SC 29209, United States of America.
| | - Susan K Wood
- Department of Pharmacology, Physiology, and Neuroscience; University of South Carolina School of Medicine, Columbia, SC 29209, United States of America; WJB Dorn Veterans Administration Medical Center, Columbia, SC 29209, United States of America.
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Feng C, Li A, Yin C, Wang S, Jin W, Liu Y, Huo T, Jiang H. Realgar Alleviated Neuroinflammation Induced by High Protein and High Calorie Diet in Rats via the Microbiota-Gut-Brain Axis. Nutrients 2022; 14:nu14193958. [PMID: 36235611 PMCID: PMC9572528 DOI: 10.3390/nu14193958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/17/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Purpose: Gastrointestinal heat retention syndrome (GHRS) often occurs in adolescents, resulting into nervous system injury. Realgar, an arsenic mineral with neuroprotective effect, has been widely used to treat GHRS. However, its mechanism of action remains unknown. Methods: A GHRS rat model was established using a high protein and high calorie diet. We performed macroscopic characterization by assessing bowel sounds, hot/cold preference, anal temperature, and fecal features. Atomic fluorescence spectroscopy was employed to evaluate brain arsenic level while hippocampal ultrastructural changes were analyzed using transmission electron microscopy. In addition, inflammatory cytokines and BBB breakdown were analyzed by western blotting, immunofluorescence assays, and immunohistochemistry staining. We also evaluated hippocampal metabolites by LC-MS while fecal microorganisms were assessed by 16S rDNA sequencing. Results: Our data showed that the high protein and high calorie diet induced GHRS. The rat model depicted decreased bowel sounds, increased fecal characteristics score, preference for low temperature zone, and increased anal temperature. In addition, there was increase in inflammatory factors IL-6, Iba-1, and NF-κB p65 as well as reduced BBB structural protein Claudin-5 and Occludin. The data also showed appearance of hippocampus metabolites disorder and fecal microbial imbalance. Realgar treatment conferred a neuroprotective effect by inhibiting GHRS-specific characteristics, neuroinflammatory response, BBB impairment, metabolites disorder, and microbial imbalance in the GHRS rat model. Conclusion: Taken together, our analysis demonstrated that realgar confers a neuroprotective effect in GHRS rats through modulation of the microbiota-gut-brain axis.
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Affiliation(s)
- Cong Feng
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Laboratory of Research in Parkinson’s Disease and Related Disorders, Health Sciences Institute, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Aihong Li
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Chenhui Yin
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Siying Wang
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Weiyuan Jin
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Yi Liu
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Taoguang Huo
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Hong Jiang
- Department of Health Laboratory Technology, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Correspondence:
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9
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The regulation of necroptosis and perspectives for the development of new drugs preventing ischemic/reperfusion of cardiac injury. Apoptosis 2022; 27:697-719. [DOI: 10.1007/s10495-022-01760-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2022] [Indexed: 12/11/2022]
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10
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N-acetyl-L-cysteine ameliorates hepatocyte pyroptosis of dog type 1 diabetes mellitus via suppression of NLRP3/NF-κB pathway. Life Sci 2022; 306:120802. [PMID: 35850245 DOI: 10.1016/j.lfs.2022.120802] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/04/2022] [Accepted: 07/10/2022] [Indexed: 12/23/2022]
Abstract
Type 1 diabetes mellitus (T1DM) is a chronic and represented by insulin-causing pancreatic β-cell disruption and hyperglycemia. N-Acetyl-Cysteine (NAC) is regarded as facilitating endothelial cell function and angiogenesis and may have treatment effect in the case of diabetes. However, the impact of NAC on T1DM are unknown. Here we reported that inflammatory pathogenesis of canine type 1 diabetes liver disease and the therapeutic effect of NAC combined with insulin. For this purpose, the model was established by intravenous injection of streptozotocin (20 mg/kg). Forty adult dogs were used and divided into 5 groups: control group, DM group, insulin treatment group, NAC combined with insulin therapy, and NAC group, while study lasted for 16 weeks. Results showed that the level of liver function enzyme activity were apparently increased in DM group, while the NAC with insulin treatment remarkable decreased liver function enzyme levels. Histopathology revealed that obvious changes in liver structure of all DM group, as evidenced by hepatocyte disorder and cellular swelling. Liver structure was evaluated by Periodic Acid Schiff (PAS) and Masson staining, the tissues appeared glycogen deposition and collagen deposition, indicating that DM aggravated liver injury. Compared with control group, the protein and mRNA expression of NLRP3, Caspase-1, ASC, and GSDMD were significantly induced in the DM group, while INS and NAC combined with INS treatment reversed the above changes. The levels of NF-κB P65, p-NF-κB, and IFN γ were availably enhanced in the DM group, which decreased through insulin and NAC combined with insulin treatment. This study demonstrated that NAC combined with INS exerted protective effects against STZ-induced liver injury by inhibiting the NLRP3/NF-κB pathway. The findings indicated that NAC combined with INS may serve as a potential candidate therapy for the treatment of T1DM.
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Zhu Q, Liu X, Zhu Q, Liu Z, Yang C, Wu H, Zhang L, Xia X, Wang M, Hao H, Cui Y, Zhang G, Hill MA, Flaker GC, Zhou S, Liu Z. N-Acetylcysteine Enhances the Recovery of Ischemic Limb in Type-2 Diabetic Mice. Antioxidants (Basel) 2022; 11:antiox11061097. [PMID: 35739993 PMCID: PMC9219773 DOI: 10.3390/antiox11061097] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 12/16/2022] Open
Abstract
Critical limb ischemia (CLI) is a severe complication of diabetes mellitus that occurs without effective therapy. Excessive reactive oxygen species (ROS) production and oxidative stress play critical roles in the development of diabetic cardiovascular complications. N-acetylcysteine (NAC) reduces ischemia-induced ROS production. The present study aimed to investigate the effect of NAC on the recovery of ischemic limb in an experimental model of type-2 diabetes. TALLYHO/JngJ diabetic and SWR/J non-diabetic mice were used for developing a CLI model. For NAC treatment, mice received NAC (1 mg/mL) in their drinking water for 24 h before initiating CLI, and continuously for the duration of the experiment. Blood flow, mechanical function, histology, expression of antioxidant enzymes including superoxide dismutase (SOD)-1, SOD-3, glutathione peroxidase (Gpx)-1, catalase, and phosphorylated insulin receptor substrate (IRS)-1, Akt, and eNOS in ischemic limb were evaluated in vivo or ex vivo. Body weight, blood glucose, plasma advanced glycation end-products (AGEs), plasma insulin, insulin resistance index, and plasma TNF-a were also evaluated during the experiment. NAC treatment effectively attenuated ROS production with preserved expressions of SOD-1, Gpx-1, catalase, phosphorylated Akt, and eNOS, and enhanced the recovery of blood flow and function of the diabetic ischemic limb. NAC treatment also significantly decreased the levels of phosphorylated IRS-1 (Ser307) expression and plasma TNF-α in diabetic mice without significant changes in blood glucose and AGEs levels. In conclusion, NAC treatment enhanced the recovery of blood flow and mechanical function in ischemic limbs in T2D mice in association with improved tissue redox/inflammatory status and insulin resistance.
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Affiliation(s)
- Qiang Zhu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
- Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha 410011, China;
| | - Xuanyou Liu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Qingyi Zhu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
- Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha 410011, China;
| | - Zehao Liu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Chunlin Yang
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Hao Wu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Linfang Zhang
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Xiujuan Xia
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Meifang Wang
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Hong Hao
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Yuqi Cui
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Guangsen Zhang
- Institute of Molecular Hematopathy, Second Xiangya Hospital, Central South University, Changsha 410011, China;
| | - Michael A. Hill
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO 65211, USA;
| | - Gregory C. Flaker
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
| | - Shenghua Zhou
- Department of Cardiology, Second Xiangya Hospital, Central South University, Changsha 410011, China;
| | - Zhenguo Liu
- Center for Precision Medicine, Department of Medicine, Division of Cardiovascular Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA; (Q.Z.); (X.L.); (Q.Z.); (Z.L.); (C.Y.); (H.W.); (L.Z.); (X.X.); (M.W.); (H.H.); (Y.C.); (G.C.F.)
- Correspondence: ; Tel.: +1-573-884-3278; Fax: +1-573-884-7743
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12
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Terzo S, Calvi P, Nuzzo D, Picone P, Galizzi G, Caruana L, Di Carlo M, Lentini L, Puleio R, Mulè F, Amato A. Preventive Impact of Long-Term Ingestion of Chestnut Honey on Glucose Disorders and Neurodegeneration in Obese Mice. Nutrients 2022; 14:nu14040756. [PMID: 35215406 PMCID: PMC8879402 DOI: 10.3390/nu14040756] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/04/2022] [Accepted: 02/09/2022] [Indexed: 12/11/2022] Open
Abstract
The purpose of the present study was to evaluate the impact of long-term honey ingestion on metabolic disorders and neurodegeneration in mice fed a high-fat diet (HFD). Three groups of mice were fed with a standard diet (STD), HFD or HFD supplemented with honey (HFD-H) for 16 weeks. Biochemical, histological, Western blotting, RT-PCR and Profiler PCR array were performed to assess metabolic parameters, peripheral and central insulin resistance and neurodegeneration. Daily honey intake prevented the HFD-induced glucose dysmetabolism. In fact, it reduced plasma fasting glucose, insulin and leptin concentrations and increased adiponectin levels. It improved glucose tolerance, insulin sensitivity and HOMA index without affecting plasma lipid concentration. HFD mice showed a significantly higher number of apoptotic nuclei in the superficial and deep cerebral cortex, upregulation of Fas-L, Bim and P27 (neuronal pro-apoptotic markers) and downregulation of Bcl-2 and BDNF (anti-apoptotic factors) in comparison with STD- and HFD-H mice, providing evidence for honey neuroprotective effects. PCR-array analysis showed that long-term honey intake increased the expression of genes involved in insulin sensitivity and decreased genes involved in neuroinflammation or lipogenesis, suggesting improvement of central insulin resistance. The expressions of p-AKT and p-GSK3 in HFD-H mice, which were decreased and increased, respectively, in HFD mouse brain, index of central insulin resistance, were similar to STD animals supporting the ability of regular honey intake to protect brain neurons from insulin resistance. In conclusion, the present results provide evidence for the beneficial preventative impact of regular honey ingestion on neuronal damage caused by HFD.
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Affiliation(s)
- Simona Terzo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
| | - Pasquale Calvi
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
- Dipartmento di Biomedicina, Neuroscienze e Diagnostica Avanzata (Bi.N.D.), Università degli Studi di Palermo, 90127 Palermo, Italy
| | - Domenico Nuzzo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
- Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), CNR, via U. La Malfa 153, 90146 Palermo, Italy; (G.G.); (L.C.); (M.D.C.)
| | - Pasquale Picone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
- Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), CNR, via U. La Malfa 153, 90146 Palermo, Italy; (G.G.); (L.C.); (M.D.C.)
| | - Giacoma Galizzi
- Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), CNR, via U. La Malfa 153, 90146 Palermo, Italy; (G.G.); (L.C.); (M.D.C.)
| | - Luca Caruana
- Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), CNR, via U. La Malfa 153, 90146 Palermo, Italy; (G.G.); (L.C.); (M.D.C.)
| | - Marta Di Carlo
- Istituto per la Ricerca e l’Innovazione Biomedica (IRIB), CNR, via U. La Malfa 153, 90146 Palermo, Italy; (G.G.); (L.C.); (M.D.C.)
| | - Laura Lentini
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
| | - Roberto Puleio
- Istituto Zooprofilattico Sperimentale della Sicilia “Adelmo Mirri”, 90129 Palermo, Italy;
| | - Flavia Mulè
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
| | - Antonella Amato
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università degli Studi di Palermo, 90128 Palermo, Italy; (S.T.); (P.C.); (D.N.); (P.P.); (L.L.); (F.M.)
- Correspondence: ; Tel.: +39-091-2389-7506
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13
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El-Shal LM, El-Star AAA, Azmy AM, Elnegris HM. The possible protective role of N-acetyl cysteine on duodenal mucosa of high fat diet and orlistat treated adult male albino rats and the active role of tumor necrosis factor α (TNFα) and Interleukin 6 (IL6) (histological and biochemical study). Ultrastruct Pathol 2022; 46:18-36. [PMID: 34979873 DOI: 10.1080/01913123.2021.2007194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Obesity is a major universal health issue linked to a majority of illness. AIM To evaluate the histological and biochemical changes occurred in the duodenal mucosa of high fat diet HFD and orlistat fed rats and to assess the possible protective role of N-acetyl cysteine NAC supplementation. MATERIAL AND METHOD Sixty male albino rats weighing 180-200 g were classified randomly into control group I and three experimental groups (HFD group II, HFD + orlistat group III, and HFD + orlistat + NAC group IV). All experimental groups received HFD alone/and treatment for 6 weeks. Group III received orlistat (32 mg/kg/day) before meals and group IV received the same regimen as group III in addition to NAC (230 mg/kg/day) after meals. After completion of the experiment, duodenal sections were processed for histological examination, oxidative stress parameters, and semiqualitative real time PCR for proinflammatory mediators TNFα and IL6 evaluation. Also, plasma lipid parameters were assessed and morphometric duodenal results were analyzed statistically. RESULTS By histological examination of HFD and (HFD + orlistat) groups, we found severe to moderate duodenal structural disturbances, increased goblet cells, collagen fibers, and BAX and iNOS immunostaining. By Biochemical examination, both groups showed increased proinflammatory markers level (TNFα and IL6) with decreased all antioxidant parameters and increased MDA. Moreover, NAC treatment in group IV significantly reduced all structural changes, levels of proinflammatory mediators and increased all antioxidant parameter levels and decreased MDA. CONCLUSION All findings elucidated that NAC could be accounted to be a useful drug for protection of duodenal mucosa of HFD and orlistat treated animals.
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Affiliation(s)
- Laila Moustafa El-Shal
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Alyaa A Abd El-Star
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Abeer M Azmy
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Heba M Elnegris
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.,Department of Histology and Cell Biology, Faculty of Medicine, Badr University in Cairo, Cairo, Egypt
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14
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Kociszewska D, Chan J, Thorne PR, Vlajkovic SM. The Link between Gut Dysbiosis Caused by a High-Fat Diet and Hearing Loss. Int J Mol Sci 2021; 22:13177. [PMID: 34947974 PMCID: PMC8708400 DOI: 10.3390/ijms222413177] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/02/2021] [Accepted: 12/06/2021] [Indexed: 12/17/2022] Open
Abstract
This review aims to provide a conceptual and theoretical overview of the association between gut dysbiosis and hearing loss. Hearing loss is a global health issue; the World Health Organisation (WHO) estimates that 2.5 billion people will be living with some degree of hearing loss by 2050. The aetiology of sensorineural hearing loss (SNHL) is complex and multifactorial, arising from congenital and acquired causes. Recent evidence suggests that impaired gut health may also be a risk factor for SNHL. Inflammatory bowel disease (IBD), type 2 diabetes, diet-induced obesity (DIO), and high-fat diet (HFD) all show links to hearing loss. Previous studies have shown that a HFD can result in microangiopathy, impaired insulin signalling, and oxidative stress in the inner ear. A HFD can also induce pathological shifts in gut microbiota and affect intestinal barrier (IB) integrity, leading to a leaky gut. A leaky gut can result in chronic systemic inflammation, which may affect extraintestinal organs. Here, we postulate that changes in gut microbiota resulting from a chronic HFD and DIO may cause a systemic inflammatory response that can compromise the permeability of the blood-labyrinth barrier (BLB) in the inner ear, thus inducing cochlear inflammation and hearing deficits.
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Affiliation(s)
| | | | | | - Srdjan M. Vlajkovic
- Department of Physiology and The Eisdell Moore Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag, Auckland 1142, New Zealand; (D.K.); (J.C.); (P.R.T.)
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15
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Li X, Cai Y, Luo J, Ding J, Yao G, Xiao X, Tang Y, Liang Z. Metformin attenuates hypothalamic inflammation via downregulation of RIPK1-independent microglial necroptosis in diet-induced obese mice. Cell Death Discov 2021; 7:338. [PMID: 34750365 PMCID: PMC8575871 DOI: 10.1038/s41420-021-00732-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 12/21/2022] Open
Abstract
Necroptosis, a form of programmed cell death, accounts for many inflammations in a wide range of diseases. Diet-induced obesity is manifested by low-grade inflammation in the mediobasal hypothalamus (MBH), and microglia are implicated as critical responsive components for this process. Here, we demonstrate that microglial necroptosis plays a pivotal role in obesity-related hypothalamic inflammation, facilitating proinflammatory cytokine production, such as TNF-α and IL-1β. Treatment with the anti-diabetic drug metformin effectively reduces the obese phenotypes in the high-fat diet (HFD)-fed mice, attributing to remission of hypothalamic inflammation partly through repressing microglial necroptosis. Importantly, using the receptor-interacting protein kinase 1 inhibitor, necrostatin-1s, could not suppress the microglial inflammation nor prevent body weight gain in the obese mice, indicating that the microglial necroptosis is RIPK1-independent. Altogether, these findings offer new insights into hypothalamic inflammation in diet-induced obesity and provide a novel mechanism of action for metformin in obesity treatment.
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Affiliation(s)
- Xuan Li
- Department of Gerontology, Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
- Shenzhen Iinstitute of Advanced Technology, Chinese academy of sciences, Shenzhen, 518035, China
| | - You Cai
- Department of Neurology, Institute of Translational Medicine, First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518039, China
| | - Jiao Luo
- Department of Rehabilitation Medicine, Dapeng New District Nan'ao People's Hospital, the First Affiliated Hospital of Shenzhen University, Shenzhen, 518121, China
| | - Jingyun Ding
- Department of Gerontology, Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Guojun Yao
- Department of Gerontology, Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Xiaohua Xiao
- Department of Gerontology, Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Yizhe Tang
- Department of Neurology, Shenzhen Institute of Translational Medicine, Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Zhen Liang
- Shenzhen People's Hospital, Shenzhen, 518020, China.
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16
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Xu CJ, Li MQ, Li-Zhao, Chen WG, Wang JL. Short-term high-fat diet favors the appearances of apoptosis and gliosis by activation of ERK1/2/p38MAPK pathways in brain. Aging (Albany NY) 2021; 13:23133-23148. [PMID: 34620734 PMCID: PMC8544319 DOI: 10.18632/aging.203607] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/07/2021] [Indexed: 01/26/2023]
Abstract
High-fat diet (HFD) has been associated with neuroinflammation and apoptosis in distinct brain regions. To explore the effect of short-term (7, 14 and 21 days) high-fat overfeeding on apoptosis, inflammatory signaling proteins, APP changes and glial cell activities in cerebral cortex and cerebellum. Mice were fed with HFD for different lengths (up to 21 days) and after each time body weights of mice was tested, then the apoptotic proteins, IL-1β, APP, BACE1and MAPKs, Akt and NF-κB signaling activity were evaluated by western blots. Results demonstrate that short period of high-fat overnutrition significantly promotes apoptosis, APP expression at day 21 of cerebral cortex and at day 7 of cerebellum compared to chow diet. In addition, increased GFAP+astrocytes, Iba-1+microglia and IL-1β 30 were observed in cerebral cortex after 21 days HFD, but no changes for 7 days overfeeding of cerebellum. Serendipitously, ERK1/2 pathway was activated both in cerebral cortex and cerebellum for different time course of HFD. Furthermore, increased phospho-p38 MAPK level was observed in cerebellum only. In consistent with in vivo results, SH-SY5Y cells treatment with cholesterol (50 μM, 100 μM) for 48 h culture in vitro demonstrated that pro-apoptotic proteins were enhanced as well. In brief, short-term HFD consumption increases sensitivity to apoptosis, APP and IL-1β production as well as gliosis in cerebral cortex and cerebellum, which may be related to enhancement of ERK1/2 and p38 MAPK activation.
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Affiliation(s)
- Chao-Jin Xu
- Department of Histology and Embryology, School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, PR China
| | - Mei-Qi Li
- School of 2nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, PR China
| | - Li-Zhao
- School of 2nd Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, PR China
| | - Wei-Guang Chen
- Department of Histology and Embryology, School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, PR China
| | - Jun-Ling Wang
- Center for Reproductive Medicine, Affiliated Hospital 1 of Wenzhou Medical University, Wenzhou, Zhejiang 325000, PR China
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17
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Saber S, Abd El-Fattah EE, Yahya G, Gobba NA, Maghmomeh AO, Khodir AE, Mourad AAE, Saad AS, Mohammed HG, Nouh NA, Shata A, Amin NA, Abou El-Rous M, Girgis S, El-Ahwany E, Khalaf EM, El-Kott AF, El-Baz AM. A Novel Combination Therapy Using Rosuvastatin and Lactobacillus Combats Dextran Sodium Sulfate-Induced Colitis in High-Fat Diet-Fed Rats by Targeting the TXNIP/NLRP3 Interaction and Influencing Gut Microbiome Composition. Pharmaceuticals (Basel) 2021; 14:ph14040341. [PMID: 33917884 PMCID: PMC8068273 DOI: 10.3390/ph14040341] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/31/2021] [Accepted: 04/06/2021] [Indexed: 12/13/2022] Open
Abstract
Inflammasome targeting and controlling dysbiosis are promising therapeutic approaches to control ulcerative colitis. This report is the first to investigate the mechanisms underlying the coloprotective effects of rosuvastatin and Lactobacillus and their combined therapy on dextran sodium sulfate (DSS)-induced colitis in high-fat diet (HFD)-fed rats. Our results demonstrate the aggravation of intestinal inflammation as a consequence of an HFD following DSS administration. An association between dyslipidemia, LDL oxidation, CD36 expression, ROS generation, thioredoxin-interacting protein (TXNIP) upregulation, and NLRP3 inflammasome activation was demonstrated by DSS exposure in HFD-fed rats. We demonstrated that rosuvastatin/Lactobacillus significantly suppressed the DSS/HFD-induced increase in colon weight/length ratio, DAI, MDI, and myeloperoxidase, as well as corrected dysbiosis and improved histological characteristics. Additionally, caspase-1 activity and IL-1β-driven pyroptotic activity was significantly reduced. Rosuvastatin/Lactobacillus showed prominent anti-inflammatory effects as revealed by the IL-10/IL-12 ratio and the levels of TNF-α and IL-6. These latter effects may be attributed to the inhibition of phosphorylation-induced activation of NF-κB and a concomitant reduction in the expression of NLRP3, pro-IL-1β, and pro-IL-18. Furthermore, rosuvastatin/Lactobacillus reduced Ox-LDL-induced TXNIP and attenuated the inflammatory response by inhibiting NLRP3 inflammasome assembly. To conclude, rosuvastatin/Lactobacillus offers a safe and effective strategy for the management of ulcerative colitis.
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Affiliation(s)
- Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
- Correspondence: (S.S.); or (A.M.E.-B.); Tel.: +2-01033124949 (S.S.); +2-01069096934 (A.M.E.-B.); Fax: +2-050-2770140 (S.S. & A.M.E.-B.)
| | - Eslam E. Abd El-Fattah
- Department of Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt;
| | - Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Al Sharqia 44519, Egypt;
| | - Naglaa A. Gobba
- Department of Pharmacology and Toxicology, College of Pharmacy, Misr University for Science and Technology, Giza 12411, Egypt; or
| | - Abdalkareem Omar Maghmomeh
- Department of Biochemistry, Faculty of Pharmacy, Arab Private University for Science and Technology, Hama 1293400, Syria; or
| | - Ahmed E. Khodir
- Department of Pharmacology, Faculty of Pharmacy, Horus University-Egypt, New Damietta 34518, Egypt; or
| | - Ahmed A. E. Mourad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Port-Said University, Port-Said 42511, Egypt; (A.A.E.M.); (A.S.S.)
| | - Ahmed S. Saad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Port-Said University, Port-Said 42511, Egypt; (A.A.E.M.); (A.S.S.)
| | | | - Nehal A. Nouh
- Department of Microbiology, Albatterjee Medical College, Jeddah 6231, Saudi Arabia;
| | - Ahmed Shata
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
- Department of Clinical Pharmacy, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
| | - Noha A. Amin
- Department of Haematology, Theodor Bilharz Research Institute, Giza 12411, Egypt; or
| | - Magdy Abou El-Rous
- Department of Biochemistry, Faculty of Pharmacy, Helwan University, Cairo 11795, Egypt; or
| | - Samuel Girgis
- Department of Pharmaceutics, Faculty of Pharmacy, Alsalam University, Kafr El-Zayat 31612, Egypt;
| | - Eman El-Ahwany
- Department of Immunology, Theodor Bilharz Research Institute, Giza 12411, Egypt;
| | - Eman M. Khalaf
- Department of Microbiology and Immunology, Faculty of Pharmacy, Damanhour University, Damanhour 22511, Egypt;
| | - Attalla F. El-Kott
- Department of Biology, College of Science, King Khalid University, Abha 61421, Saudi Arabia;
- Department of Zoology, Faculty of Science, Damanhour University, Damanhour 22511, Egypt
| | - Ahmed M. El-Baz
- Department of Microbiology and Biotechnology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa 11152, Egypt
- Correspondence: (S.S.); or (A.M.E.-B.); Tel.: +2-01033124949 (S.S.); +2-01069096934 (A.M.E.-B.); Fax: +2-050-2770140 (S.S. & A.M.E.-B.)
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Wang WY, Xie L, Zou XS, Li N, Yang YG, Wu ZJ, Tian XY, Zhao GY, Chen MH. Inhibition of extracellular signal-regulated kinase/calpain-2 pathway reduces neuroinflammation and necroptosis after cerebral ischemia-reperfusion injury in a rat model of cardiac arrest. Int Immunopharmacol 2021; 93:107377. [PMID: 33517223 DOI: 10.1016/j.intimp.2021.107377] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Cerebral ischemia-reperfusion injury (CIRI) is the leading cause of poor neurological prognosis after cardiopulmonary resuscitation (CPR). We previously reported that the extracellular signal-regulated kinase (ERK) activation mediates CIRI. Here, we explored the potential ERK/calpain-2 pathway role in CIRI using a rat model of cardiac arrest (CA). METHODS Adult male Sprague-Dawley rats suffered from CA/CPR-induced CIRI, received saline, DMSO, PD98059 (ERK1/2 inhibitor, 0.3 mg/kg), or MDL28170 (calpain inhibitor, 3.0 mg/kg) after spontaneous circulation recovery. The survival rate and the neurological deficit score (NDS) were utilized to assess the brain function. Hematoxylin stain, Nissl staining, and transmission electron microscopy were used to evaluate the neuron injury. The expression levels of p-ERK, ERK, calpain-2, neuroinflammation-related markers (GFAP, Iba1, IL-1β, TNF-α), and necroptosis proteins (TNFR1, RIPK1, RIPK3, p-MLKL, and MLKL) in the brain tissues were determined by western blotting and immunohistochemistry. Fluorescent multiplex immunohistochemistry was used to analyze the p-ERK, calpain-2, and RIPK3 co-expression in neurons, and RIPK3 expression levels in microglia or astrocytes. RESULTS At 24 h after CA/CPR, the rats in the saline-treated and DMSO groups presented with injury tissue morphology, low NDS, ERK/calpain-2 pathway activation, and inflammatory cytokine and necroptosis protein over-expression in the brain tissue. After PD98059 and MDL28170 treatment, the brain function was improved, while inflammatory response and necroptosis were suppressed by ERK/calpain-2 pathway inhibition. CONCLUSION Inflammation activation and necroptosis involved in CA/CPR-induced CIRI were regulated by the ERK/calpain-2 signaling pathway. Inhibition of that pathway can reduce neuroinflammation and necroptosis after CIRI in the CA model rats.
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Affiliation(s)
- Wen-Yan Wang
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Lu Xie
- Department of Physiology, Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Xin-Sen Zou
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Nuo Li
- Department of Physiology, Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Ye-Gui Yang
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Zhi-Jiang Wu
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Xin-Yue Tian
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Gao-Yang Zhao
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China
| | - Meng-Hua Chen
- Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530000, People's Republic of China.
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19
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Abdelhaffez AS, Abd El-Aziz EA, Tohamy MB, Ahmed AM. N-acetyl cysteine can blunt metabolic and cardiovascular effects via down-regulation of cardiotrophin-1 in rat model of fructose-induced metabolic syndrome. Arch Physiol Biochem 2021:1-16. [PMID: 33507837 DOI: 10.1080/13813455.2021.1876735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, we investigated the ability of N-acetyl cysteine (NAC) to alleviate the metabolic disorders in fructose-induced metabolic syndrome (MS) in male rats and to examine its protective effect on aortic and cardiac tissues via its influence on cardiotrophin-1 (CT-1) expression. NAC (20 mg/kg b.w./day) was administered to fructose induced MS animals for 12 weeks. Chronic fructose consumption (20% w/v) increased body weight gain, relative heart weight, systolic blood pressure (SBP), diastolic blood pressure (DBP), insulin resistance (IR), and associated with metabolic alterations. Histological and immunohistochemical examination revealed aortic stiffness and myocardial degeneration and fibrosis together with increased CT-1 expression. Treatment with NAC improved IR, SBP, DBP, and mitigated dyslipidaemia and oxidative stress. Additionally, NAC down-regulated CT-1 expression in the heart and aorta. These findings demonstrated the protective effect of NAC against aortic and myocardial degeneration and fibrosis through down-regulation of CT-1 in fructose induced MS animal model.
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Affiliation(s)
- Azza S Abdelhaffez
- Faculty of Medicine, Department of Medical Physiology, Assiut University, Assiut, Egypt
| | - Ebtihal A Abd El-Aziz
- Faculty of Medicine, Department of Medical Physiology, Assiut University, Assiut, Egypt
| | - Maha B Tohamy
- Faculty of Medicine, Department of Medical Physiology, Assiut University, Assiut, Egypt
| | - Asmaa M Ahmed
- Faculty of Medicine, Department of Pathology, Assiut University, Assiut, Egypt
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20
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Gómez-Apo E, Mondragón-Maya A, Ferrari-Díaz M, Silva-Pereyra J. Structural Brain Changes Associated with Overweight and Obesity. J Obes 2021; 2021:6613385. [PMID: 34327017 PMCID: PMC8302366 DOI: 10.1155/2021/6613385] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 05/14/2021] [Accepted: 07/09/2021] [Indexed: 12/17/2022] Open
Abstract
Obesity is a global health problem with a broad set of comorbidities, such as malnutrition, metabolic syndrome, diabetes, systemic hypertension, heart failure, and kidney failure. This review describes recent findings of neuroimaging and two studies of cell density regarding the roles of overnutrition-induced hypothalamic inflammation in neurodegeneration. These studies provided consistent evidence of smaller cortical thickness or reduction in the gray matter volume in people with overweight and obesity; however, the investigated brain regions varied across the studies. In general, bilateral frontal and temporal areas, basal nuclei, and cerebellum are more commonly involved. Mechanisms of volume reduction are unknown, and neuroinflammation caused by obesity is likely to induce neuronal loss. Adipocytes, macrophages of the adipose tissue, and gut dysbiosis in overweight and obese individuals result in the secretion of the cytokines and chemokines that cross the blood-brain barrier and may stimulate microglia, which in turn also release proinflammatory cytokines. This leads to chronic low-grade neuroinflammation and may be an important factor for apoptotic signaling and neuronal death. Additionally, significant microangiopathy observed in rat models may be another important mechanism of induction of apoptosis. Neuroinflammation in neurodegenerative diseases (such as Alzheimer's and Parkinson's diseases) may be similar to that in metabolic diseases induced by malnutrition. Poor cognitive performance, mainly in executive functions, in individuals with obesity is also discussed. This review highlights the neuroinflammatory and neurodegenerative mechanisms linked to obesity and emphasizes the importance of developing effective prevention and treatment intervention strategies for overweight and obese individuals.
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Affiliation(s)
- Erick Gómez-Apo
- Servicio de Anatomía Patológica, Hospital General de México “Dr. Eduardo Liceaga”, Ciudad de México, Mexico
| | - Alejandra Mondragón-Maya
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
| | - Martina Ferrari-Díaz
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
| | - Juan Silva-Pereyra
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Mexico
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21
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The effects of N-acetylcysteine on inflammatory and oxidative stress biomarkers: A systematic review and meta-analysis of controlled clinical trials. Eur J Pharmacol 2020; 884:173368. [DOI: 10.1016/j.ejphar.2020.173368] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/08/2020] [Accepted: 07/13/2020] [Indexed: 01/08/2023]
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22
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Regular Intake of Pistachio Mitigates the Deleterious Effects of a High Fat-Diet in the Brain of Obese Mice. Antioxidants (Basel) 2020; 9:antiox9040317. [PMID: 32326575 PMCID: PMC7222408 DOI: 10.3390/antiox9040317] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/07/2020] [Accepted: 04/13/2020] [Indexed: 12/19/2022] Open
Abstract
Obesity has been associated with neurodegeneration and cognitive dysfunctions. Recent data showed that pistachio consumption is able to prevent and ameliorate dyslipidemia, hepatic steatosis, systemic and adipose tissue inflammation in mice fed a high-fat diet (HFD). The present study investigated the neuroprotective effects of pistachio intake in HFD mice. Three groups of mice were fed a standard diet (STD), HFD, or HFD supplemented with pistachio (HFD-P) for 16 weeks. Metabolic parameters (oxidative stress, apoptosis, and mitochondrial dysfunction) were analyzed by using specific assays and biomarkers. The pistachio diet significantly reduced the serum levels of triglycerides and cholesterol in the HFD model. No difference was observed in the index of insulin resistance between HFD and HFD-P. A higher number of fragmented nuclei were found in HFD cerebral cortex compared to STD and HFD-P. A decrease in reactive oxygen species, singlet oxygen and phosphorylated extracellular signal-regulated kinase, and an increase of superoxide dismutase 2 and heme oxygenase expression were found in the brains of the HFD-P samples compared to HFD. Furthermore, the impaired mitochondrial function found in HFD brain was partially recovered in HFD-P mice. These results suggest that the regular intake of pistachio may be useful in preventing obesity-related neurodegeneration, being able to reduce both metabolic and cellular dysfunctions.
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