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Chen J, Chen L, Zhang X, Yao W, Xue Z. Exploring causal associations of antioxidants from supplements and diet with attention deficit/hyperactivity disorder in European populations: a Mendelian randomization analysis. Front Nutr 2024; 11:1415793. [PMID: 39381354 PMCID: PMC11459460 DOI: 10.3389/fnut.2024.1415793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 09/10/2024] [Indexed: 10/10/2024] Open
Abstract
Background Antioxidants from both supplements and diet have been suggested to potentially reduce oxidative stress in individuals with ADHD. However, there is a lack of studies utilizing the Mendelian randomization (MR) method to explore the relationship between dietary and supplemental antioxidants with ADHD. Methods This study employed two-sample mendelian randomization. Various specific antioxidant dietary supplements (such as coffee, green tea, herbal tea, standard tea, and red wine intake per week), along with diet-derived circulating antioxidants including Vitamin C (ascorbate), Vitamin E (α-tocopherol), Vitamin E (γ-tocopherol), carotene, Vitamin A (retinol), zinc, and selenium (N = 2,603-428,860), were linked to independent single nucleotide polymorphisms (SNPs). Data on ADHD was gathered from six sources, comprising 246,888 participants. The primary analytical method utilized was inverse variance weighting (IVW), with sensitivity analysis conducted to assess the robustness of the main findings. Results In different diagnostic periods for ADHD, we found that only green tea intake among the antioxidants was significantly associated with a reduced risk of ADHD in males (OR: 0.977, CI: 0.963-0.990, p < 0.001, FDR = 0.065), with no evidence of pleiotropy or heterogeneity observed in the results. Additionally, a nominal causal association was found between green tea intake and childhood ADHD (OR: 0.989, 95% CI: 0.979-0.998, p = 0.023, FDR = 0.843). No causal relationships were detected between the intake of other antioxidant-rich diets and ADHD. Conclusion Our study found a significant inverse association between green tea intake and male ADHD, suggesting that higher green tea consumption may reduce ADHD risk in males. Further research is needed to explore optimal doses and underlying mechanisms.
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Affiliation(s)
- Jing Chen
- Department of Pediatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lifei Chen
- Department of Pediatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xinguang Zhang
- Department of Pediatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenbo Yao
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zheng Xue
- Department of Pediatrics, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Hassanen EI, Mansour HA, Issa MY, Ibrahim MA, Mohamed WA, Mahmoud MA. Epigallocatechin gallate-rich fraction alleviates histamine-induced neurotoxicity in rats via inactivating caspase-3/JNK signaling pathways. Food Chem Toxicol 2024; 193:115021. [PMID: 39322001 DOI: 10.1016/j.fct.2024.115021] [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: 06/05/2024] [Revised: 09/08/2024] [Accepted: 09/21/2024] [Indexed: 09/27/2024]
Abstract
Ingestion of prominent levels of histamine (HIS) leads to dangerous effects on biological systems. The most frequent and active catechin in green tea is epigallocatechin gallate which has strong antioxidant properties. Our research intended to investigate the possible neuroprotective effect of epigallocatechin gallate-rich fraction (EGCGR) against HIS-inducing neurotoxicity. Six groups of male rats (n = 5) were used as follows: (1) Distilled water, (2&3) EGCGR (100-200 mg/kg BWT/day, respectively), (4) HIS (1750 mg/kg BWT/week, (5&6) HIS + EGCGR. Administration of HIS for 14 days induced severe neurobehavioral changes including depression, incoordination, and loss of spatial memory. Extensive neuronal degeneration with diffuse gliosis was the prominent histopathological lesion observed and confirmed by strong immunostaining of casp-3, Cox-2, and GFAP. Additionally, the HIS group showed a significantly higher MDA level with lower CAT and GSH activity than the control group. Moreover, HIS promoted apoptosis, which is indicated by increasing JNK, and Bax and decreasing Bcl-2 gene expressions. Otherwise, the oral intake of EGCGR with HIS improved all neurotoxicological parameters induced by HIS. We concluded that HIS could cause neurotoxicity via an upset of the equilibrium between oxidants and antioxidants which trigger apoptosis through modulation of JNK signaling pathway. Furthermore, EGCGR has either direct or indirect antihistaminic effects.
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Affiliation(s)
- Eman I Hassanen
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
| | - Hayam A Mansour
- Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Marwa Y Issa
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Giza, 12211, Egypt
| | - Marwa A Ibrahim
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Wafaa A Mohamed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Mahmoud A Mahmoud
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
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Joshi N, Vaidya B, Sharma SS. Transient receptor potential channels as an emerging target for the treatment of Alzheimer's disease: Unravelling the potential of pharmacological interventions. Basic Clin Pharmacol Toxicol 2024. [PMID: 39209323 DOI: 10.1111/bcpt.14073] [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: 03/01/2024] [Revised: 07/09/2024] [Accepted: 07/30/2024] [Indexed: 09/04/2024]
Abstract
Alzheimer's disease (AD) is a devastating disorder with a multifaceted aetiology characterized by dementia, which later progresses to cognitive impairment. Significant efforts have been made to develop pharmacological interventions that slow down the pathogenesis of AD. However, conventional drugs have failed to satisfactorily treat AD and are more focussed towards symptomatic management. Thus, there is a gap in the literature regarding novel targets and modulators targeting them for the effective treatment of AD. Recent studies have demonstrated that modulation of transient receptor potential (TRP) channels has the potential to halt AD pathogenesis at an early stage and rescue hippocampal neurons from death. Amongst several members, TRP channels like TRPA1, TRPC6, TRPM2 and TRPV2 have shown promising results in the attenuation of neurobehavioural cognitive deficits as well as signalling pathways governing such cognitive decline. Furthermore, as these channels govern the ionic balance in the cell, their beneficial effects have also been known to maintain the homeostasis of Ca2+, which is the major culprit eliciting the vicious cycle of excitotoxicity, mitochondrial dysfunction, ROS generation and neurodegeneration. Despite such tremendous potential of TRP channel modulators, their clinical investigation remains elusive. Therefore, in the present review, we have discussed such agents in the light of TRP channels as molecular targets for the amelioration of AD both at the preclinical and clinical levels.
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Affiliation(s)
- Nishit Joshi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, India
| | - Bhupesh Vaidya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, India
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Ng MG, Chan BJL, Koh RY, Ng KY, Chye SM. Prevention of Parkinson's Disease: From Risk Factors to Early Interventions. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2024; 23:746-760. [PMID: 37326115 DOI: 10.2174/1871527322666230616092054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 06/17/2023]
Abstract
Parkinson's disease (PD) is a debilitating neurological disorder characterized by progressively worsening motor dysfunction. Currently, available therapies merely alleviate symptoms, and there are no cures. Consequently, some researchers have now shifted their attention to identifying the modifiable risk factors of PD, with the intention of possibly implementing early interventions to prevent the development of PD. Four primary risk factors for PD are discussed including environmental factors (pesticides and heavy metals), lifestyle (physical activity and dietary intake), drug abuse, and individual comorbidities. Additionally, clinical biomarkers, neuroimaging, biochemical biomarkers, and genetic biomarkers could also help to detect prodromal PD. This review compiled available evidence that illustrates the relationship between modifiable risk factors, biomarkers, and PD. In summary, we raise the distinct possibility of preventing PD via early interventions of the modifiable risk factors and early diagnosis.
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Affiliation(s)
- Ming Guan Ng
- School of Health Science, International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Brendan Jun Lam Chan
- School of Health Science, International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Rhun Yian Koh
- Division of Applied Biomedical Science and Biotechnology, School of Health Science, International Medical University, Kuala Lumpur, Malaysia
| | - Khuen Yen Ng
- School of Pharmacy, Monash University, 47500 Selangor, Malaysia
| | - Soi Moi Chye
- Division of Applied Biomedical Science and Biotechnology, School of Health Science, International Medical University, Kuala Lumpur, Malaysia
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Wu W, Huang J, Han P, Zhang J, Wang Y, Jin F, Zhou Y. Research Progress on Natural Plant Molecules in Regulating the Blood-Brain Barrier in Alzheimer's Disease. Molecules 2023; 28:7631. [PMID: 38005352 PMCID: PMC10674591 DOI: 10.3390/molecules28227631] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Alzheimer's disease (AD) is a prevalent neurodegenerative disorder. With the aging population and the continuous development of risk factors associated with AD, it will impose a significant burden on individuals, families, and society. Currently, commonly used therapeutic drugs such as Cholinesterase inhibitors, N-methyl-D-aspartate antagonists, and multiple AD pathology removal drugs have been shown to have beneficial effects on certain pathological conditions of AD. However, their clinical efficacy is minimal and they are associated with certain adverse reactions. Furthermore, the underlying pathological mechanism of AD remains unclear, posing a challenge for drug development. In contrast, natural plant molecules, widely available, offer multiple targeting pathways and demonstrate inherent advantages in modifying the typical pathologic features of AD by influencing the blood-brain barrier (BBB). We provide a comprehensive review of recent in vivo and in vitro studies on natural plant molecules that impact the BBB in the treatment of AD. Additionally, we analyze their specific mechanisms to offer novel insights for the development of safe and effective targeted drugs as well as guidance for experimental research and the clinical application of drugs for the prevention and treatment of AD.
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Affiliation(s)
- Weidong Wu
- Basic Theory of Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin 150040, China; (W.W.); (J.Z.); (Y.W.)
| | - Jiahao Huang
- Department of Chinese Pharmacology, Heilongjiang University of Chinese Medicine, Harbin 150040, China;
| | - Pengfei Han
- Science and Education Section, Zhangjiakou First Hospital, Zhangjiakou 075041, China;
| | - Jian Zhang
- Basic Theory of Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin 150040, China; (W.W.); (J.Z.); (Y.W.)
| | - Yuxin Wang
- Basic Theory of Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin 150040, China; (W.W.); (J.Z.); (Y.W.)
| | - Fangfang Jin
- Department of Internal Medicine, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Yanyan Zhou
- Basic Theory of Chinese Medicine, Heilongjiang University of Chinese Medicine, Harbin 150040, China; (W.W.); (J.Z.); (Y.W.)
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de la Rubia Ortí JE, Platero Armero JL, Cuerda-Ballester M, Sanchis-Sanchis CE, Navarro-Illana E, Lajara-Romance JM, Benlloch M, Ceron JJ, Tvarijonaviciute A, Proaño B. Lipid Profile in Multiple Sclerosis: Functional Capacity and Therapeutic Potential of Its Regulation after Intervention with Epigallocatechin Gallate and Coconut Oil. Foods 2023; 12:3730. [PMID: 37893623 PMCID: PMC10606609 DOI: 10.3390/foods12203730] [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: 09/17/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Multiple sclerosis (MS) patients present dyslipidemia and functional disability. Epigallocatechin gallate (EGCG) and coconut oil have been shown to be effective against dyslipidemia. OBJECTIVE To analyze the relationship between lipid profiles, fat consumption, and functional disability in patients with MS after administering EGCG and coconut oil. METHODS A four-month pilot study was conducted on 45 MS patients, divided into an intervention group (IG) and a control group (CG). The IG received 800 mg of EGCG and 60 mL of coconut oil. Lipid profiles were measured before and after the intervention, along with other data such as dietary habits, inflammatory markers, and functional capacity. RESULTS Dyslipidemia did not correlate with the patients' fat consumption. After the intervention, triglycerides (TG) levels were lower in IG compared to CG. This decrease was positively correlated with an improvement in functional disability (determined by the Expanded Disability Status Scale (EDSS)) and negatively with high-density cholesterol (HDL) and apolipoprotein A1. Significant and positive correlations were observed between EDSS and C-reactive protein (CRP) in the IG. These changes in the IG could be related to body fat decrease, whose percentage shows a positive correlation with CRP and TG levels, and a negative correlation with HDL levels. CONCLUSIONS Patients with MS present a certain type of dyslipemia not associated with their nutritional habits. The administration of EGCG and coconut oil seems to decrease blood TG levels, which could explain the functional improvements.
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Affiliation(s)
- Jose Enrique de la Rubia Ortí
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
| | - Jose Luis Platero Armero
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
| | - María Cuerda-Ballester
- Doctoral Degree School, Health Sciences, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain;
| | - Claudia Emmanuela Sanchis-Sanchis
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
| | - Esther Navarro-Illana
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
| | | | - María Benlloch
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
| | - Jose Joaquín Ceron
- Interdisciplinary Laboratory of Clinical Analysis, Campus of Excellence Mare Nostrum, University of Murcia, 30100 Murcia, Spain; (J.J.C.); (A.T.)
| | - Asta Tvarijonaviciute
- Interdisciplinary Laboratory of Clinical Analysis, Campus of Excellence Mare Nostrum, University of Murcia, 30100 Murcia, Spain; (J.J.C.); (A.T.)
| | - Belén Proaño
- Department of Nursing, Catholic University of Valencia San Vicente Mártir, 46001 Valencia, Spain; (J.E.d.l.R.O.); (J.L.P.A.); (C.E.S.-S.); (E.N.-I.); (B.P.)
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Chen X, Zhang J, Lin Y, Li Y, Wang H, Wang Z, Liu H, Hu Y, Liu L. Mechanism, prevention and treatment of cognitive impairment caused by high altitude exposure. Front Physiol 2023; 14:1191058. [PMID: 37731540 PMCID: PMC10507266 DOI: 10.3389/fphys.2023.1191058] [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: 03/21/2023] [Accepted: 06/05/2023] [Indexed: 09/22/2023] Open
Abstract
Hypobaric hypoxia (HH) characteristics induce impaired cognitive function, reduced concentration, and memory. In recent years, an increasing number of people have migrated to high-altitude areas for work and study. Headache, sleep disturbance, and cognitive impairment from HH, severely challenges the physical and mental health and affects their quality of life and work efficiency. This review summarizes the manifestations, mechanisms, and preventive and therapeutic methods of HH environment affecting cognitive function and provides theoretical references for exploring and treating high altitude-induced cognitive impairment.
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Affiliation(s)
- Xin Chen
- Department of Clinical Laboratory Medicine, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Jiexin Zhang
- Department of Clinical Laboratory Medicine, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan, China
- Faculty of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei, China
| | - Yuan Lin
- Sichuan Xincheng Biological Co., LTD., Chengdu, Sichuan, China
| | - Yan Li
- Department of General Surgery, The 77th Army Hospital, Leshan, Sichuan, China
| | - Han Wang
- Department of Cardiology, Affiliated Hospital of Southwest Jiaotong University, The Third People’s Hospital of Chengdu, Chengdu, Sichuan, China
| | - Zhanhao Wang
- Department of Clinical Laboratory Medicine, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Huawei Liu
- Department of Clinical Laboratory Medicine, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Yonghe Hu
- Faculty of Medicine, Southwest Jiaotong University, Chengdu, Sichuan, China
| | - Lei Liu
- Medical Research Center, The Third People’s Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan, China
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Chen Y, Liu Z, Gong Y. Neuron-immunity communication: mechanism of neuroprotective effects in EGCG. Crit Rev Food Sci Nutr 2023; 64:9333-9352. [PMID: 37216484 DOI: 10.1080/10408398.2023.2212069] [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] [Indexed: 05/24/2023]
Abstract
Epigallocatechin gallate (EGCG), a naturally occurring active ingredient unique to tea, has been shown to have neuroprotective potential. There is growing evidence of its potential advantages in the prevention and treatment of neuroinflammation, neurodegenerative diseases, and neurological damage. Neuroimmune communication is an important physiological mechanism in neurological diseases, including immune cell activation and response, cytokine delivery. EGCG shows great neuroprotective potential by modulating signals related to autoimmune response and improving communication between the nervous system and the immune system, effectively reducing the inflammatory state and neurological function. During neuroimmune communication, EGCG promotes the secretion of neurotrophic factors into the repair of damaged neurons, improves intestinal microenvironmental homeostasis, and ameliorates pathological phenotypes through molecular and cellular mechanisms related to the brain-gut axis. Here, we discuss the molecular and cellular mechanisms of inflammatory signaling exchange involving neuroimmune communication. We further emphasize that the neuroprotective role of EGCG is dependent on the modulatory role between immunity and neurology in neurologically related diseases.
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Affiliation(s)
- Ying Chen
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
| | - Yushun Gong
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
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Nisar A, Jagtap S, Vyavahare S, Deshpande M, Harsulkar A, Ranjekar P, Prakash O. Phytochemicals in the treatment of inflammation-associated diseases: the journey from preclinical trials to clinical practice. Front Pharmacol 2023; 14:1177050. [PMID: 37229273 PMCID: PMC10203425 DOI: 10.3389/fphar.2023.1177050] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/27/2023] [Indexed: 05/27/2023] Open
Abstract
Advances in biomedical research have demonstrated that inflammation and its related diseases are the greatest threat to public health. Inflammatory action is the pathological response of the body towards the external stimuli such as infections, environmental factors, and autoimmune conditions to reduce tissue damage and improve patient comfort. However, when detrimental signal-transduction pathways are activated and inflammatory mediators are released over an extended period of time, the inflammatory process continues and a mild but persistent pro-inflammatory state may develop. Numerous degenerative disorders and chronic health issues including arthritis, diabetes, obesity, cancer, and cardiovascular diseases, among others, are associated with the emergence of a low-grade inflammatory state. Though, anti-inflammatory steroidal, as well as non-steroidal drugs, are extensively used against different inflammatory conditions, they show undesirable side effects upon long-term exposure, at times, leading to life-threatening consequences. Thus, drugs targeting chronic inflammation need to be developed to achieve better therapeutic management without or with a fewer side effects. Plants have been well known for their medicinal use for thousands of years due to their pharmacologically active phytochemicals belonging to diverse chemical classes with a number of these demonstrating potent anti-inflammatory activity. Some typical examples include colchicine (alkaloid), escin (triterpenoid saponin), capsaicin (methoxy phenol), bicyclol (lignan), borneol (monoterpene), and quercetin (flavonoid). These phytochemicals often act via regulating molecular mechanisms that synergize the anti-inflammatory pathways such as increased production of anti-inflammatory cytokines or interfere with the inflammatory pathways such as to reduce the production of pro-inflammatory cytokines and other modulators to improve the underlying pathological condition. This review describes the anti-inflammatory properties of a number of biologically active compounds derived from medicinal plants, and their mechanisms of pharmacological intervention to alleviate inflammation-associated diseases. The emphasis is given to information on anti-inflammatory phytochemicals that have been evaluated at the preclinical and clinical levels. Recent trends and gaps in the development of phytochemical-based anti-inflammatory drugs have also been included.
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Affiliation(s)
- Akib Nisar
- Biochemical Sciences Division, Rajiv Gandhi Institute of IT and Biotechnology, Bharati Vidyapeeth Deemed to be University, Pune, Maharashtra, India
| | - Suresh Jagtap
- Herbal Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed to be University, Pune, Maharashtra, India
| | - Suresh Vyavahare
- Shatayu Ayurved and Research Centre, Solapur, Maharashtra, India
| | - Manasi Deshpande
- Department of Dravyagun Vigyan, College of Ayurved, Bharati Vidyapeeth Deemed to be University, Pune, Maharashtra, India
| | - Abhay Harsulkar
- Herbal Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed to be University, Pune, Maharashtra, India
- Pharmaceutical Biotechnology, Poona College of Pharmacy, Bharati Vidyapeeth Deemed to be University, Pune, Maharashtra, India
| | | | - Om Prakash
- Department of Microbiology, Immunology and Parasitology, University Health Sciences Center, New Orleans, LA, United States
- Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, United States
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Kim JE, Lee DS, Kang TC. Epigallocatechin-3-Gallate Attenuates Leukocyte Infiltration in 67-kDa Laminin Receptor-Dependent and -Independent Pathways in the Rat Frontoparietal Cortex following Status Epilepticus. Antioxidants (Basel) 2023; 12:antiox12040969. [PMID: 37107345 PMCID: PMC10136333 DOI: 10.3390/antiox12040969] [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: 02/17/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Status epilepticus (SE) evokes leukocyte infiltration in the frontoparietal cortex (FPC) without the blood-brain barrier disruption. Monocyte chemotactic protein-1 (MCP-1) and macrophage inflammatory protein-2 (MIP-2) regulate leukocyte recruitments into the brain parenchyma. Epigallocatechin-3-gallate (EGCG) is an antioxidant and a ligand for non-integrin 67-kDa laminin receptor (67LR). However, it is unknown whether EGCG and/or 67LR affect SE-induced leukocyte infiltrations in the FPC. In the present study, SE infiltrated myeloperoxidase (MPO)-positive neutrophils, as well as cluster of differentiation 68 (CD68)-positive monocytes in the FPC are investigated. Following SE, MCP-1 was upregulated in microglia, which was abrogated by EGCG treatment. The C-C motif chemokine receptor 2 (CCR2, MCP-1 receptor) and MIP-2 expressions were increased in astrocytes, which were attenuated by MCP-1 neutralization and EGCG treatment. SE reduced 67LR expression in astrocytes, but not endothelial cells. Under physiological conditions, 67LR neutralization did not lead to MCP-1 induction in microglia. However, it induced MIP-2 expression and extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation in astrocytes and leukocyte infiltration in the FPC. Co-treatment of EGCG or U0126 (an ERK1/2 inhibitor) attenuated these events induced by 67LR neutralization. These findings indicate that the EGCG may ameliorate leukocyte infiltration in the FPC by inhibiting microglial MCP-1 induction independent of 67LR, as well as 67LR-ERK1/2-MIP-2 signaling pathway in astrocytes.
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Affiliation(s)
- Ji-Eun Kim
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon 24252, Republic of Korea
| | - Duk-Shin Lee
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon 24252, Republic of Korea
| | - Tae-Cheon Kang
- Department of Anatomy and Neurobiology, Institute of Epilepsy Research, College of Medicine, Hallym University, Chuncheon 24252, Republic of Korea
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Wen J, Jin H, Wang L, Zhang Y, Jiang L, Sui X. Fabrication and characterization of high internal phase Pickering emulsions based on pH-mediated soy protein-epigallocatechin-3-gallate hydrophobic and hydrophilic nano-stabilizer. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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12
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Aslan A, Beyaz S, Gok O, Parlak G, Can MI, Agca CA, Ozercan IH, Parlak AE. Royal jelly protects brain tissue against fluoride-induced damage by activating Bcl-2/NF-κB/caspase-3/caspase-6/Bax and Erk signaling pathways in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:49014-49025. [PMID: 36759409 DOI: 10.1007/s11356-023-25636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 01/26/2023] [Indexed: 02/11/2023]
Abstract
This study is aimed at determining whether royal jelly (RJ) which has a powerful antioxidant property prevents fluoride-induced brain tissue damage and exploring whether Bcl-2/NF-κB/ and caspase-3/caspase-6/Bax/Erk pathways play a critical role in the neuroprotective effect of RJ. Wistar albino rats were chosen for the study, and they were randomly distributed into six groups: (i) control; (ii) royal jelly; (iii) fluoride-50; (iv) fluoride-100; (v) fluoride-50 + royal jelly; (vi) fluoride-100 + royal jelly. We established fluoride-induced brain tissue damage with 8-week-old male Wistar albino rats by administration of fluoride exposure (either 50 mg/kg or 100 mg/kg bw) through drinking water for 8 weeks. Then, the study duration is for 56 days where the rats were treated with or without RJ (100 mg/kg bw) through oral gavage. The effects of RJ on glutathione (GSH), catalase activity (CAT), and malondialdehyde (MDA) levels were determined via spectrophotometer. Western blot analysis was performed to investigate the effects of royal jelly on the protein expression levels of Bax, caspase-3, caspase-6, Bcl-2, NF-κB, COX-2, and Erk. It was also studied the effects of RJ on histopathological alterations in fluoride-induced damage to the rat brain. As a result, the Bcl-2, NF-κB, and COX-2 protein expression levels were increased in the fluoride-treated (50 and 100 mg/kg) groups but they were decreased significantly by RJ treatment in the brain tissue. Additionally, the protein expression of caspase-3, caspase-6, Bax, and Erk were decreased in fluoride-treated groups and they were significantly increased by RJ treatment compared to the un-treated rats. Our results suggested that RJ prevented fluoride-induced brain tissue damage through anti-antioxidant activities.
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Affiliation(s)
- Abdullah Aslan
- Faculty of Science, Department of Biology-Molecular Biology and Genetics Program, Firat University, Elazig, Turkey.
| | - Seda Beyaz
- Faculty of Science, Department of Biology-Molecular Biology and Genetics Program, Firat University, Elazig, Turkey
| | - Ozlem Gok
- Faculty of Science, Department of Biology-Molecular Biology and Genetics Program, Firat University, Elazig, Turkey
| | - Gozde Parlak
- Faculty of Science, Department of Biology-Molecular Biology and Genetics Program, Firat University, Elazig, Turkey
| | - Muhammed Ismail Can
- Faculty of Science, Department of Biology, Inonu University, Malatya, Turkey
| | - Can Ali Agca
- Faculty of Science, Department of Molecular Biology and Genetics 12000, Bingol University, Bingol, Turkey
| | | | - Akif Evren Parlak
- Department of Environmental Protection Technologies, Keban Vocational School, Firat University, Elazig, Turkey
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13
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Yang X, Han M, Wang X, Wang J, Sun X, Zhang C, Yan S, Huang L, Chen Y. Evaluation of the synergistic effects of epigallocatechin-3-gallate-loaded PEGylated-PLGA nanoparticles with nimodipine against neuronal injury after subarachnoid hemorrhage. Front Nutr 2023; 9:953326. [PMID: 36687668 PMCID: PMC9845867 DOI: 10.3389/fnut.2022.953326] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 11/25/2022] [Indexed: 01/05/2023] Open
Abstract
Subarachnoid hemorrhage (SAH) is a devastating subtype of stroke with high mortality and morbidity. Although serious side effects might occur, nimodipine, a second-generation 1,4-dihydropyridine calcium channel blocker, is clinically used to improve neurological outcomes after SAH. Recently, (-)-epigallocatechin-3-gallate (EGCG) has been reported to inhibit Ca2+ overloading-induced mitochondrial dysfunction, oxidative stress, and neuronal cell death after SAH; however, low bioavailability, instability, and cytotoxicity at a high dose limited the clinical application of EGCG. To overcome these limitations, PEGylated-PLGA EGCG nanoparticles (EGCG-NPs) were constructed to enhance the bioavailability by using the double-emulsion method. Antioxidative activity, cytotoxicity, behavioral, and immunohistochemistry studies were carried out to determine the neuroprotective effectiveness after cotreatment with EGCG-NPs (75 mg/kg/d preconditioning for 7 days before SAH) and nimodipine (10 mg/kg/d after 30 min of SAH) by using in vivo SAH models. The optimized EGCG-NPs with a Box-Behnken design showed a small particle size of 167 nm, a zeta potential value of -22.6 mV, an encapsulation efficiency of 86%, and a sustained-release profile up to 8 days in vitro. Furthermore, EGCG-NPs (75 mg/kg/d) had superior antioxidative activity to free EGCG (100 mg/kg/d). EGCG-NPs combined with nimodipine exhibited significant synergistic effects against neuronal cell death by suppressing oxidative stress, Ca2+ overloading, mitochondrial dysfunction, and autophagy after SAH. These results suggest that cotreatment with EGCG-NPs and nimodipine may serve as a promising novel strategy for the treatment of SAH.
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Affiliation(s)
- Xianguang Yang
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Mengguo Han
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Xue Wang
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Jian Wang
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Xiaoxue Sun
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Chunyan Zhang
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Shuaiguo Yan
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China
| | - Liyong Huang
- Department of Neurosurgery, The First Affiliated Hospital of Xinxiang Medical University, Henan, China,Henan Key Laboratory of Neurorestoratology, The First Affiliated Hospital of Xinxiang Medical University, Henan, China,Liyong Huang ✉
| | - Ying Chen
- College of Life Sciences, Henan Normal University, Xinxiang, Henan, China,*Correspondence: Ying Chen ✉
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14
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Chen G, Cheng K, Niu Y, Zhu L, Wang X. (-)-Epicatechin gallate prevents inflammatory response in hypoxia-activated microglia and cerebral edema by inhibiting NF-κB signaling. Arch Biochem Biophys 2022; 729:109393. [PMID: 36084697 DOI: 10.1016/j.abb.2022.109393] [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: 07/07/2022] [Revised: 09/01/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022]
Abstract
High-altitude cerebral edema (HACE), a potentially lethal disease, is associated with a time-dependent exposure to altitude-related hypobaric hypoxia (HH) and has reportedly been associated with microglia hyperactivation. Catechins are substances with good antioxidant properties, among which (-)-epigallocatechin gallate (EGCG) may play a neuroprotective role through the inhibition of microglia overactivation; however, the function of its analog- (-)-epicatechin gallate (ECG)-requires further elucidation. The aim of the present study was to investigate whether ECG prevented HACE by inhibiting HH-activated microglia. Primary microglia exposed to lipopolysaccharide (LPS)/ATP were co-treated with EGCG, ECG, and (-)-epigallocatechin, and ECG and EGCG exerted significant anti-inflammatory and neuroprotective effects. ECG inhibited the NF-κB pathway to prevent the activation of microglia induced by 1% O2. In addition, ECG ameliorated the increase in brain water content and aquaporin 4 expression induced by HH in mice. ECG also reduced the number of Iba1+ microglia in the brain, the release of proinflammatory factors, and the recruitment of microglia to blood vessels in HH-exposed mice. The outcomes of the present study revealed that ECG alleviated hypoxic hyperactivated microglia, reduced the neuroinflammation and blood-brain barrier permeability, and prevented HACE by inhibiting NF-κB signaling.
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Affiliation(s)
- Guijuan Chen
- Institute of Special Environmental Medicine, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Kang Cheng
- Institute of Special Environmental Medicine, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Yun Niu
- Institute of Special Environmental Medicine, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Li Zhu
- Institute of Special Environmental Medicine, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China.
| | - Xueting Wang
- Institute of Special Environmental Medicine, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China.
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15
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Formation of composite hydrogel of carboxymethyl konjac glucomannan/gelatin for sustained release of EGCG. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.04.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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16
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Xie X, Wan J, Zheng X, Pan W, Yuan J, Hu B, Feng M, Liu Z, Cai S. Synergistic effects of epigallocatechin gallate and l-theanine in nerve repair and regeneration by anti-amyloid damage, promoting metabolism, and nourishing nerve cells. Front Nutr 2022; 9:951415. [PMID: 36034895 PMCID: PMC9399931 DOI: 10.3389/fnut.2022.951415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Green tea has significant protective activity on nerve cells, but the mechanism of action is unclear. Epigallocatechin gallate (EGCG) and N-ethyl-L-glutamine (L-theanine) are the representative functional components of green tea (Camellia sinensis). In this study, an AD model of Aβ25–35-induced differentiated neural cell line PC12 cells was established to study the synergistic effect of EGCG and L-theanine in protecting neural cells. The results showed that under Aβ25–35 stress conditions, mitochondria and axons degenerated, and the expression of cyclins was up-regulated, showing the gene and protein characteristics of cellular hyperfunction. EGCG + L-theanine inhibited inflammation and aggregate formation pathways, significantly increased the percentage of G0/G1 in the cell cycle, downregulated the expression of proteins such as p-mTOR, Cyclin D1, and Cyclin B1, upregulated the expression of GAP43, Klotho, p-AMPK, and other proteins, promoted mitochondrial activity and energy metabolism, and had repair and regeneration effects on differentiated nerve cells. The synergistic mechanism study showed that under the premise that EGCG inhibits amyloid stress and inflammation and promotes metabolism, L-theanine could play a nourish nerve effect. EGCG + L-theanine keeps differentiated nerve cells in a quiescent state, which is beneficial to the repair and regeneration of nerve cells. In addition, EGCG + L-theanine maintains the high-fidelity structure of cellular proteins. This study revealed for the first time that the synergistic effect of EGCG with L-theanine may be an effective way to promote nerve cell repair and regeneration and slow down the progression of AD. Our findings provide a new scientific basis for the relationship between tea drinking and brain protection.
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Affiliation(s)
- Xinya Xie
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Juan Wan
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Xin Zheng
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Wenjing Pan
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Jiayi Yuan
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Baozhu Hu
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Meiyan Feng
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Zhonghua Liu
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Shuxian Cai
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China.,Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha, China.,Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
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17
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Wang A, Chen X, Wang L, Jia W, Wan X, Jiao J, Yao W, Zhang Y. Catechins protect against acrylamide- and glycidamide-induced cellular toxicity via rescuing cellular apoptosis and DNA damage. Food Chem Toxicol 2022; 167:113253. [PMID: 35738327 DOI: 10.1016/j.fct.2022.113253] [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: 04/24/2022] [Revised: 06/05/2022] [Accepted: 06/19/2022] [Indexed: 10/18/2022]
Abstract
Acrylamide (AA) occurs in both various environmental and dietary sources and has raised widespread concern as a probable carcinogen. Glycidamide (GA) is the main genotoxic metabolite through P450 2E1 (CYP2E1). In the present study, we investigate the protective effect of (-)-epigallocatechin gallate (EGCG) and (-)-epicatechin (EC) against AA- and GA-induced hepatotoxicity in HepG2 cells. The results demonstrated that EC and EGCG inhibited AA- and GA-induced cytotoxicity and mitochondria-mediated cellular apoptosis. Moreover, exposure to AA (100 μg/mL) and GA (50 μg/mL) caused cell cycle arrest and DNA damage, while EC and EGCG ranging from 12.5 to 50 μg/mL rescued cell cycle arrest and inhibited DNA damage. Furthermore, EC and EGCG down-regulated pro-apoptotic protein Bax and Caspase 3 after 24 h treatment in HepG2 cells exposed to AA (100 μg/mL) or GA (50 μg/mL). Also, the intervention with EC or EGCG up-regulated DNA repair related protein PARP and down-regulated expression of cleaved-PARP. Besides, EC exerted better protective effect than EGCG against AA- and GA-induced cytotoxicity in HepG2 cells. Altogether, EC and EGCG were effective in protecting AA- and GA-induced hepatotoxicity via rescuing cellular apoptosis and DNA damage, as well as promoting cell cycle progression in HepG2 cells.
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Affiliation(s)
- Anli Wang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xinyu Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Laizhao Wang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei Jia
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xuzhi Wan
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jingjing Jiao
- Department of Nutrition, School of Public Health, Department of Clinical Nutrition of Affiliated Second Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Weixuan Yao
- Key Laboratory of Drug Prevention and Control Technology of Zhejiang Province, Department of Criminal Science and Technology, Zhejiang Police College, Hangzhou, Zhejiang, China.
| | - Yu Zhang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Zhejiang International Scientific and Technological Cooperation Base of Health Food Manufacturing and Quality Control, Fuli Institute of Food Science, Zhejiang University, Hangzhou, Zhejiang, China.
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18
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Pre-Exposure to Environmental Enrichment Protects against Learning and Memory Deficits Caused by Infrasound Exposure. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6208872. [PMID: 35620581 PMCID: PMC9129996 DOI: 10.1155/2022/6208872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/28/2022] [Accepted: 04/28/2022] [Indexed: 11/18/2022]
Abstract
With the development of industrialization in recent years, infrasound has become an important component of public noise. To date, diverse studies have revealed the negative effects of infrasound on the central nervous system (CNS), especially the learning and memory ability. It is widely reported that environmental enrichment (EE) ameliorates the learning and memory deficits in different models of brain injury. Therefore, the present study was designed to determine the possible benefits of pre-exposure to EE in preventing functional deficits following infrasound exposure and their related mechanism. Adult male rats were given enriched or standard housing for 30 days. Following enrichment, the rats were exposed to 16 Hz, 130 dB infrasound for 14 days, and then their learning and memory ability was assessed. Changes to neuroinflammation, apoptosis, and oxidative stress in the hippocampus were also detected. Our results showed that the infrasound-induced deficit in learning and memory was attenuated significantly in EE pre-exposed rats. Pre-exposure to EE could induce a decrease in proinflammatory cytokines and increased anti-inflammatory cytokines and antioxidant properties in the hippocampus. Moreover, pre-exposure to EE also exerted antiapoptosis functions by upregulating the B-cell lymphoma/leukemia-2 (Bcl-2) level and downregulating the P53 level in the hippocampus. In conclusion, the results of the present study suggested that EE is neuroprotective when applied before infrasound exposure, resulting in an improved learning and memory ability by enhancing antioxidant, anti-inflammatory, and antiapoptosis capacities.
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19
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Chen C, Li B, Chen H, Qin Y, Cheng J, He B, Wan Y, Zhu D, Gao F. Epigallocatechin-3-Gallate Ameliorated Iron Accumulation and Apoptosis and Promoted Neuronal Regeneration and Memory/Cognitive Functions in the Hippocampus Induced by Exposure to a Chronic High-Altitude Hypoxia Environment. Neurochem Res 2022; 47:2254-2262. [PMID: 35552996 PMCID: PMC9352632 DOI: 10.1007/s11064-022-03611-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 04/09/2022] [Accepted: 04/15/2022] [Indexed: 02/05/2023]
Abstract
We aimed to explore the protective effects and potential treatment mechanism of Epigallocatechin-3-gallate (EGCG) in an animal model of chronic exposure in a natural high-altitude hypoxia (HAH) environment. Behavioral alterations were assessed with the Morris water maze test. Iron accumulation in the hippocampus was detected by using DAB enhanced Perls’ staining, MRI, qPCR and colorimetry, respectively. Oxidative stress (malondialdehyde, MDA), apoptosis (Caspase-3), and neural regeneration (brain-derived neurotrophic factor, BDNF) were detected by using ELISA and western blotting. Neural ultrastructural changes were evaluated by transmission electron microscopy (TEM). The results showed that learning and memory performance of rats decreased when exposure to HAH environment. It was followed by iron accumulation, dysfunctional iron metabolism, reduced BDNF and the upregulation of MDA and Caspase-3. TEM confirmed the ultrastructural changes in neurons and mitochondria. EGCG reduced HAH-induced cognitive impairment, iron deposition, oxidative stress, and apoptosis and promoted neuronal regeneration against chronic HAH-mediated neural injury.
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Affiliation(s)
- Chen Chen
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Bo Li
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Haotian Chen
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yuhui Qin
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Junying Cheng
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Bo He
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yixuan Wan
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Dongyong Zhu
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China
| | - Fabao Gao
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, 610041, Sichuan, People's Republic of China.
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20
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Medrano-Jiménez E, Meza-Sosa KF, Urbán-Aragón JA, Secundino I, Pedraza-Alva G, Pérez-Martínez L. Microglial activation in Alzheimer's disease: The role of flavonoids and microRNAs. J Leukoc Biol 2022; 112:47-77. [PMID: 35293018 DOI: 10.1002/jlb.3mr1021-531r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 01/31/2022] [Indexed: 12/16/2022] Open
Abstract
Alzheimer's disease (AD) is the most common form of senile dementia and is characterized by progressive cognitive impairment and neuronal degeneration. Microglial activation is an important pathologic hallmark of AD. During disease progression, microglial cells switch from an alternative or anti-inflammatory and neuroprotective profile (M2) to a classic or proinflammatory and neurotoxic profile (M1). Phenotypically, M1 microglia is characterized by the activation of inflammatory signaling pathways that cause increased expression of proinflammatory genes, including those coding for cytokines and chemokines. This microglia-mediated neuroinflammation contributes to neuronal cell death. Recent studies in microglial cells have shown that a group of plant-derived compounds, known as flavonoids, possess anti-inflammatory properties and therefore exert a neuroprotective effect through regulating microglia activation. Here, we discuss how flavonoids can promote the switch from an inflammatory M1 phenotype to an anti-inflammatory M2 phenotype in microglia and how this represents a valuable opportunity for the development of novel therapeutic strategies to blunt neuroinflammation and boost neuronal recovery in AD. We also review how certain flavonoids can inhibit neuroinflammation through their action on the expression of microglia-specific microRNAs (miRNAs), which also constitute a key therapeutic approach in different neuropathologies involving an inflammatory component, including AD. Finally, we propose novel targets of microglia-specific miRNAs that may be considered for AD treatment.
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Affiliation(s)
- Elisa Medrano-Jiménez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - Karla F Meza-Sosa
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - José A Urbán-Aragón
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - Ismael Secundino
- Universidad De La Salle Bajío, Facultad de Odontología y Escuela de Veterinaria, León-Guanajuato, México
| | - Gustavo Pedraza-Alva
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - Leonor Pérez-Martínez
- Laboratorio de Neuroinmunobiología, Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
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21
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Gao X, Wang J, Shi J, Sun Q, Jia N, Li H. The Efficacy Mechanism of Epigallocatechin Gallate against Pre-Eclampsia based on Network Pharmacology and Molecular Docking. Reprod Sci 2022; 29:1859-1873. [PMID: 35211881 DOI: 10.1007/s43032-022-00894-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/16/2022] [Indexed: 12/19/2022]
Abstract
Pre-eclampsia (PE), a pregnancy complication, affects 3-5% of all pregnancies worldwide and is the main cause of maternal and perinatal morbidity. However, there is no drug which can clearly slow this disease progression. Epigallocatechin gallate (EGCG), a natural compound extracted from green tea, has been found to enhance the treatment efficacy of oral nifedipine against pregnancy-induced severe PE. This study aims to clarify the potential targets and pharmacological mechanisms of EGCG in treatment of PE. We used Traditional Chinese Medicine Systems Pharmacology database and Gene Cards database to obtain 179 putative target proteins of EGCG, 550 PE-related hub genes and 39 intersecting targets between EGCG and PE. By using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses, we got the gene entries and enrichment pathways closely related to the intersecting targets. The top 10 enrichment pathways were pathway in cancer, proteoglycans in cancer, HIF-1 signaling pathway, AGE-RAGE signaling pathway in diabetic complications, TNF signaling pathway, bladder cancer, hepatitis B, IL-17 signaling pathway, toxoplasmosis, PI3K-Akt signaling pathway. Furthermore, compound-target-pathway (CTP) and protein-protein interaction (PPI) network analysis were employed to explore the interaction of the top twelve targets for EGCG in treating PE. Molecular docking analysis showed combinations between these targets and EGCG, and the interaction between EGCG and the targets IL-6 and EGFR was confirmed by using molecular dynamic simulation. In conclusion, these findings hint the underlying mechanism of EGCG in the treatment of PE and point out directions in further studies on PE.
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Affiliation(s)
- Xinru Gao
- Department of Neonatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, People's Republic of China.,Northwest Women's and Children's Hospital, Xi'an, Shaanxi, 710061, People's Republic of China
| | - Jiahao Wang
- Health Science Center of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, People's Republic of China
| | - Jiamiao Shi
- Health Science Center of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, People's Republic of China
| | - Qinru Sun
- Institute of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, People's Republic of China
| | - Ning Jia
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, People's Republic of China.
| | - Hui Li
- Department of Neonatology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, People's Republic of China.
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22
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Vahl JM, von Witzleben A, Reiter R, Theodoraki MN, Wigand M, Hoffmann TK, Goldberg-Bockhorn E. Infrasound a new weapon in cancer therapy? Explore (NY) 2021; 18:366-370. [PMID: 33745848 DOI: 10.1016/j.explore.2021.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 02/25/2021] [Accepted: 03/07/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND Researchers take different positions when describing the effects of infrasound on the human body. Although several studies investigated the likely harmful effects of infrasound exposure from wind turbines a significant connection has not been found yet. There is evidence that infrasound interacts with cell metabolism and may disrupt cell membrane integrity. OBJECTIVES The suggested impairment of the cells' ultrastructure by infrasound leads to the question of whether infrasound can be therapeutically used, for instance in cancer therapy. This review provides the current state of the literature. METHOD Current literature on infrasound in cancer therapy including all studies with the search terms 'cancer' and 'infrasound' were identified and reviewed until the year 2020. RESULTS The present state of research reveals promising effects of targeted infrasound in cancer therapy. Infrasound directly affects the tumor cells' ultrastructure and seems to sensitize several types of cancer to chemotherapy, presumably due to membrane permeabilization. The application of infrasound on tumor cells without other therapeutic agents demonstrates different effects that probably depend on the type of cells, the applied frequency and sound pressure level as well as the time of exposure. CONCLUSIONS The mechanism of infrasound on cancer cells is not completely understood yet, hence, further studies have to be conducted to clarify the ultrastructural and metabolic changes inside the tumor cells. The development of suitable infrasound generators for the application in a clinical setting would be an important course of action.
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Affiliation(s)
- J M Vahl
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany.
| | - A von Witzleben
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - R Reiter
- Department of Phoniatrics and Pedaudiology, Ulm University Medical Center, 89075 Ulm, Germany
| | - M N Theodoraki
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - M Wigand
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - T K Hoffmann
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
| | - E Goldberg-Bockhorn
- Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, 89075 Ulm, Germany
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23
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Yan S, Xu J, Zhang X, Xie F, Zhang S, Jiang L, Qi B, Li Y. Effect of pH-shifting treatment on the structural and functional properties of soybean protein isolate and its interactions with (–)-epigallocatechin-3-gallate. Process Biochem 2021. [DOI: 10.1016/j.procbio.2020.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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Yan S, Xie F, Zhang S, Jiang L, Qi B, Li Y. Effects of soybean protein isolate − polyphenol conjugate formation on the protein structure and emulsifying properties: Protein − polyphenol emulsification performance in the presence of chitosan. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125641] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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25
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Matcha Improves Metabolic Imbalance-Induced Cognitive Dysfunction. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8882763. [PMID: 33312340 PMCID: PMC7719512 DOI: 10.1155/2020/8882763] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/26/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022]
Abstract
This study was conducted to assess the protective effect of extract of match (EM) on high-fat diet- (HFD-) induced cognitive deficits in male C57BL/6 mice. It was found that EM improved glucose tolerance status by measuring OGTT and IPGTT with HFD-induced mice. EM protected behavioral and memory dysfunction in Y-maze, passive avoidance, and Morris water maze tests. Consumption of EM reduced fat mass, dyslipidemia, and inflammation in adipose tissue. Also, EM ameliorated hepatic and cerebral antioxidant systems. EM improved the cerebral cholinergic system by regulating ACh contents and expression of AChE and ChAT. Also, EM restored mitochondrial function in liver and brain tissue. EM attenuated hepatic inflammatory effect, lipid synthesis, and cholesterol metabolism by regulating the protein expression of TNF-α, TNFR1, p-IRS-1, p-JNK, IL-1β, iNOS, COX-2, HMGCR, PPARγ, and FAS. Finally, EM regulated cognitive function and neuroinflammation in the whole brain, hippocampus, and cerebral cortex by regulating the protein expression of p-JNK, p-Akt, p-tau, Aβ, BDNF, IDE, COX-2, and IL-1β. These findings suggest that EM might be a potential source of functional food to improve metabolic disorder-associated cognitive dysfunction.
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26
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Protective Effects of Epigallocatechin Gallate (EGCG) on Endometrial, Breast, and Ovarian Cancers. Biomolecules 2020; 10:biom10111481. [PMID: 33113766 PMCID: PMC7694163 DOI: 10.3390/biom10111481] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023] Open
Abstract
Green tea and its major bioactive component, (-)-epigallocatechin gallate (EGCG), possess diverse biological properties, particularly antiproliferation, antimetastasis, and apoptosis induction. Many studies have widely investigated the anticancer and synergistic effects of EGCG due to the side effects of conventional cytotoxic agents. This review summarizes recent knowledge of underlying mechanisms of EGCG on protective roles for endometrial, breast, and ovarian cancers based on both in vitro and in vivo animal studies. EGCG has the ability to regulate many pathways, including the activation of nuclear factor erythroid 2-related factor 2 (Nrf2), inhibition of nuclear factor-κB (NF-κB), and protection against epithelial-mesenchymal transition (EMT). EGCG has also been found to interact with DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), which affect epigenetic modifications. Finally, the action of EGCG may exert a suppressive effect on gynecological cancers and have beneficial effects on auxiliary therapies for known drugs. Thus, future clinical intervention studies with EGCG will be necessary to more and clear evidence for the benefit to these cancers.
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27
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Tang H, Hao S, Chen X, Li Y, Yin Z, Zou Y, Song X, Li L, Ye G, Zhao L, Guo H, He R, Lv C, Lin J, Shi F. Epigallocatechin-3-gallate protects immunity and liver drug-metabolism function in mice loaded with restraint stress. Biomed Pharmacother 2020; 129:110418. [PMID: 32570121 DOI: 10.1016/j.biopha.2020.110418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/07/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023] Open
Abstract
(-)-Epigallocatechin-3-gallate (EGCG) is the most abundant polyphenolic compound present in green tea and has been shown to possess bio-activities. In this study, we investigated the protective effects of EGCG against restraint stress (RS)-induced liver injury and immunosuppression. EGCG (10, 20 and 40 mg/kg) was orally administered to mice daily for 7 days before modeling the restraint stress. lood, liver and broncho-alveolar lavage fluid (BALF) samples were collected and tested. We found that EGCG significantly reduced the release of stress hormones to weak restraint stress response. EGCG effectively improved hepatic damage by decreas the serum levels of alanine aminotransaminase (ALT) and aspartate transaminase (AST) in restraint-challenged mice. Furthermore, EGCG also significantly prevented the release of H2O2, NOS and 8-isoprostane, and reduced the levels of interleukin (IL)-1β, IL-2,and IL-6 restrained mice. EGCG can normal the level of cytochrome P450 (CYP450) 1A2, 2D22, 2E1 and 3A11 that induced by restraint stress., the inhibition status of T cells subsets in serum and gA in BALF were significantly relieved EGCG pretreatment. Taken together, our data suggest that EGCG possesse hepatic- and immune-protective properties against restraint stress through its anti-oxidant, anti-inflammatory and immunomodulatory activities.
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Affiliation(s)
- Huaqiao Tang
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Suqi Hao
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xingying Chen
- College of Medicine, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Yinglun Li
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Zhongqiong Yin
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Yuanfeng Zou
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Xu Song
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Lixia Li
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Gang Ye
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Ling Zhao
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Hongrui Guo
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Ran He
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Cheng Lv
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Juchun Lin
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China
| | - Fei Shi
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, China.
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28
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Wang J, Li P, Qin T, Sun D, Zhao X, Zhang B. Protective effect of epigallocatechin-3-gallate against neuroinflammation and anxiety-like behavior in a rat model of myocardial infarction. Brain Behav 2020; 10:e01633. [PMID: 32304289 PMCID: PMC7303397 DOI: 10.1002/brb3.1633] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Individuals who experience myocardial infarction (MI) often experience anxiety. Green tea has potent antioxidative properties and, epigallocatechin-3-gallate (EGCG), which is a primary component of tea polyphenols, has advantageous effects on anxiety and depression. However, its mechanism of action regarding the inhibition of anxiety-like symptoms after MI remains unclear. This study examined whether EGCG alleviated anxiety-like behavior in MI rats and its possible mechanism. MATERIAL AND METHODS Rats were administered a daily gavage of EGCG (50 mg/kg) 7 days before and 14 consecutive days after the MI procedure. The open-field test and light/dark shuttle box were performed to evaluate anxiety-like behavior. Serum and hippocampus interleukin (IL)-6 levels were tested using ELISA. Caspase 3, caspase 8, caspase 9 and bcl-2 messenger RNA levels in the hippocampus were determined using quantitative polymerase chain reaction, and STAT3 protein was detected by Western blot. RESULTS Results of the open field test and light/dark shuttle box task demonstrated that the MI procedure induced anxiety-like behavior in the animals, and this impairment was improved by EGCG. Daily EGCG administration significantly decreased the level of IL-6 both in serum and hippocampus after MI. The administration of EGCG also significantly moderated the expression of caspases 3, 8, and 9 mRNA, which was related to apoptosis in the hippocampus. Furthermore, EGCG also downregulated the expression of STAT3, which was related to the activity of IL-6. These results suggest that EGCG alleviated anxiety-like behavior by inhibiting increases in neuroinflammation and apoptosis in the rat hippocampus. In addition, EGCG reversed alterations of IL-6 and STAT3 in the brain to alleviate apoptosis in the hippocampus. CONCLUSIONS Thus, EGCG reversed anxiety-like behavior through an anti-inflammation effect to alleviate apoptosis in neurons and may be a useful therapeutic material for anxiety-like behavior after MI.
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Affiliation(s)
- Jinpeng Wang
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Ping Li
- Department of Paediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Tian Qin
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Dongjie Sun
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Xin Zhao
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Beilin Zhang
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
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29
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Novel synthesis of mussel inspired and Fe3+ induced pH-sensitive hydrogels: Adhesion, injectable, shapeable, temperature properties, release behavior and rheological characterization. Carbohydr Polym 2020; 236:116045. [DOI: 10.1016/j.carbpol.2020.116045] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 02/15/2020] [Accepted: 02/19/2020] [Indexed: 12/11/2022]
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30
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Abo-Salem OM, Ali TM, Harisa GI, Mehanna OM, Younos IH, Almalki WH. Beneficial effects of (-)-epigallocatechin-3-O-gallate on diabetic peripheral neuropathy in the rat model. J Biochem Mol Toxicol 2020; 34:e22508. [PMID: 32275810 DOI: 10.1002/jbt.22508] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/26/2020] [Accepted: 03/26/2020] [Indexed: 11/11/2022]
Abstract
Diabetic neuropathic pain is characterized by spontaneous pain with hyperalgesia and allodynia. We investigated whether (-)-epigallocatechin-3-O-gallate could improve diabetic neuropathic pain development through hypoglycemic, hypolipidemic, antioxidant, and anti-inflammatory effects. Diabetes was induced in rats by streptozotocin (55 mg/kg/once) and treated with (-)-epigallocatechin-3-O-gallate (25 mg/kg/orally/once/daily/5 weeks). Diabetic rats showed an increase in serum levels of glucose, nitric oxide, triglyceride, total cholesterol, and low-density lipoprotein-cholesterol with a decrease in high-density lipoprotein-cholesterol and body weight. Also, there was an elevation in brain malondialdehyde with a marked reduction in brain levels of glutathione, superoxide dismutase, catalase, glutathione peroxidase, and glutathione-S-transferase. Furthermore, diabetic rats showed a clear reduction in plasma levels of insulin and an increase in plasma cytokines (interleukin-6 and tumor necrosis factor-α). Moreover, diabetic rats exhibited hyperalgesia as indicated by a hot plate, tail immersion, formalin, and carrageenan-induced edema tests as well as brain histopathological changes (neuron degeneration, gliosis, astrocytosis, congestion and hemorrhage). (-)-Epigallocatechin-3-O-gallate treatment ameliorated alterations in body weight, biochemical parameters, pain sensation, and histopathological changes in brain tissue. (-)-Epigallocatechin-3-O-gallate offers promising hypoglycemic, hypolipidemic, antioxidant and anti-inflammatory effects, which can prevent the development and progression of diabetic neuropathic pain.
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Affiliation(s)
- Osama Mohamed Abo-Salem
- Department of Pharmacology & Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo, Egypt
| | - Tarek Mohamed Ali
- Department of Medical Physiology, Faculty of Medicine, Beni-Suef University, Beni Suef, Egypt.,Department of Medical Physiology, Faculty of Medicine, Taif University, Taif, Saudi Arabia
| | - Gamaleldin Ibrahim Harisa
- Department of Pharmaceutics, Kayyali Chair for Pharmaceutical Industry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Biochemistry, College of Pharmacy (Boys), Al-Azhar University, Nasr, Cairo, Egypt
| | - Osama Mahmoud Mehanna
- Department of Medical Physiology, Faculty of Medicine, Taif University, Taif, Saudi Arabia.,Department of Medical Physiology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ibrahim Hamdy Younos
- Department of Clinical Pharmacology, College of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Waleed Hassan Almalki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
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31
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Farkhondeh T, Pourbagher-Shahri AM, Ashrafizadeh M, Folgado SL, Rajabpour-Sanati A, Khazdair MR, Samarghandian S. Green tea catechins inhibit microglial activation which prevents the development of neurological disorders. Neural Regen Res 2020; 15:1792-1798. [PMID: 32246619 PMCID: PMC7513986 DOI: 10.4103/1673-5374.280300] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The over-activated microglial cells induce neuroinflammation which has the main role in neurological disorders. The over-activated microglia can disturb neuronal function by releasing inflammatory mediators leading to neuronal dysfunctions and death. Thus, inhibition of over-activated microglia may be an effective therapeutic approach for modulating neuroinflammation. Experimental studies have indicated anti-neuroinflammatory effects of flavonoids such as green tea catechins. The current research was aimed to review the effect of green tea catechins in inhibiting microglial cells, inflammatory cascades, and subsequent neurological diseases.
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Affiliation(s)
- Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | | | - Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Silvia Llorens Folgado
- Department of Medical Sciences, Faculty of Medicine of Albacete, Centro Regional de Investigaciones Biomédicas (CRIB), University of Castilla-La Mancha, Albacete, Spain
| | | | - Mohammad Reza Khazdair
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Healthy Ageing Research Center; Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
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32
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Zou LH, Shi YJ, He H, Jiang SM, Huo FF, Wang XM, Wu F, Ma L. Effects of FGF2/FGFR1 Pathway on Expression of A1 Astrocytes After Infrasound Exposure. Front Neurosci 2019; 13:429. [PMID: 31130839 PMCID: PMC6509904 DOI: 10.3389/fnins.2019.00429] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 04/15/2019] [Indexed: 12/21/2022] Open
Abstract
Two types of reactive astrocytes, A1 and A2 astrocytes, are induced following neuroinflammation and ischemia. In this study, we evaluated the effects of the fibroblast growth factor (FGF)2/FGF receptor (FGFR)1 pathway on A1 and A2 astrocytes in the rat hippocampus using double-labeling immunofluorescence following infrasound exposure. A1 astrocytes were induced in the CA1 region of the hippocampus after exposure to infrasound for 3 days. The number of microglial cells was also increased, and we investigated if these might be responsible for the reactivity of A1 astrocytes. Accordingly, expression levels of C3 and Iba-1, as markers of A1 astrocytes and microglial cells, respectively, were both up-regulated in rat hippocampus following infrasound exposure, as demonstrated by western blot. We also explored the effect of the FGF2/FGFR1 pathway on A1 astrocyte reactivity by pretreating rats with FGF2 or the specific FGFR1 antagonist, PD173074. A1 astrocytes were gradually down-regulated by activation of the FGF2/FGFR1 pathway and were up-regulated by inhibition of the FGF2/FGFR1 pathway after infrasound damage. These results further our understanding of the role of reactive astrocytes in infrasound-induced central nervous system injury and will thus facilitate the development of new treatments for these injuries.
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Affiliation(s)
- Lin-Hui Zou
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Frontier Medical Training Brigade, Army Medical University, Changji, China
| | - Ya-Jun Shi
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hua He
- Department of Specific Diagnosis, PLA 986 Hospital, Xi'an, China
| | - Shi-Mei Jiang
- Department of Acu-Moxibustion and Tuina, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Fang-Fang Huo
- Department of Medicine, Yulin Yuyang District Hospital of Traditional Chinese Medicine, Yulin, China
| | - Xiao-Mu Wang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Fan Wu
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Lei Ma
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Pathophysiological mechanisms of diabetic cardiomyopathy and the therapeutic potential of epigallocatechin-3-gallate. Biomed Pharmacother 2018; 109:2155-2172. [PMID: 30551473 DOI: 10.1016/j.biopha.2018.11.086] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 11/14/2018] [Accepted: 11/20/2018] [Indexed: 12/26/2022] Open
Abstract
Cardiovascular complications are considered one of the leading causes of morbidity and mortality among diabetic patients. Diabetic cardiomyopathy (DCM) is a type of cardiovascular damage presents in diabetic patients independent of the coexistence of ischemic heart disease or hypertension. It is characterized by impaired diastolic relaxation time, myocardial dilatation and hypertrophy and reduced systolic and diastolic functions of the left ventricle. Molecular mechanisms underlying these pathological changes in the diabetic heart are most likely multifactorial and include, but not limited to, oxidative/nitrosative stress, increased advanced glycation end products, mitochondrial dysfunction, inflammation and cell death. The aim of this review is to address the major molecular mechanisms implicated in the pathogenesis of DCM. In addition, this review provides studies conducted to determine the pharmacological effects of (-)-epigallocatechin-3-gallate (EGCG), the major polyphenol in green tea, focusing on its therapeutic potential against the processes involved in the pathogenesis and progression of DCM. EGCG has been shown to exert several potential therapeutic properties both in vitro and in vivo. Given its therapeutic potential, EGCG might be a promising drug candidate to decrease the morbidity and mortality associated with DCM and other diabetes complications.
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34
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Shi YJ, Shi M, Xiao LJ, Li L, Zou LH, Li CY, Zhang QJ, Zhou LF, Ji XC, Huang H, Xi Y, Liu L, Zhang HY, Zhao G, Ma L. Inhibitive Effects of FGF2/FGFR1 Pathway on Astrocyte-Mediated Inflammation in vivo and in vitro After Infrasound Exposure. Front Neurosci 2018; 12:582. [PMID: 30210273 PMCID: PMC6119807 DOI: 10.3389/fnins.2018.00582] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 08/02/2018] [Indexed: 12/31/2022] Open
Abstract
Infrasound, a kind of ambient noise, can cause severe disorders to various human organs, specially to central nervous system (CNS). Our previous studies have shown that infrasound-induced CNS injury was closely related with astrocytes activation and astrocytes-mediated neuroinflammation, but the underlying molecular mechanisms are still largely unclear. FGF2/FGFR1 (Fibroblast growth factor 2/Fibroblast growth factor receptor 1) pathway was reported to play an important role in anti-inflammation in CNS disorders. To further study the possible roles of FGF2/FGFR1 pathway in infrasound-induced CNS injury, here we exposed Sprague-Dawley rats or cultured astrocytes to 16 Hz, 150 dB infrasound, and explored the effects of FGF2 on infrasound-induced astrocytes activation and neuroinflammation. Western blotting, immunofluorescence and liquid chip method were used in this experiment. Our results showed that after 3- or 7-day exposure (2 h/day) of rats as well as 2 h exposure of cultured astrocytes to 16 Hz, 150 dB infrasound, astrocyte-expressed FGFR1 was downregulated in vivo and in vitro. FGF2 pretreatment not only inhibited infrasound-induced astrocyte activation in rat hippocampal CA1 region, but also reduced the levels of pro-inflammatory cytokines, such as TNF-α, IL-1β, IL-18, IL-6, and IFN-γ in vitro and in vivo. However, FGF2 significantly upregulated the expression of FGFR1. Furthermore, we showed that FGF2 could attenuate IκBα phosphorylation, NF-κB p65 translocation, pro-inflammatory cytokines levels, and neuronal loss in the CA1 region induced by infrasound. On the contrary, PD173074, a special antagonist of FGFR1, could reverse the effects above in vitro and in vivo. Taken together, our findings showed that FGF2/FGFR1 pathway may exert inhibitive effects on astrocyte-mediated neuroinflammation in vitro and in vivo after infrasound exposure.
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Affiliation(s)
- Ya-Jun Shi
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.,31668 Troops of PLA, Army Medical University, Xining, China
| | - Ming Shi
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Li-Jun Xiao
- Department of Psychological Medicine, The General Hospital of PLA, Beijing, China
| | - Li Li
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Lin-Hui Zou
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Chao-Yang Li
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Qin-Jun Zhang
- Department of Neurology, Meishan Cardio-Cerebrovascular Disease Hospital, Meishan, China
| | - Lin-Fu Zhou
- Department of Neurology, Third Hospital of PLA, Baoji, China
| | - Xin-Chao Ji
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Huan Huang
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Ye Xi
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Neurobiology, School of Basic Medicine, The Fourth Military Medical University, Xi'an, China
| | - Hong-Ya Zhang
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Gang Zhao
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Lei Ma
- Department of Neurology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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Feng S, Liu J, Cheng B, Deng A, Zhang H. (-)-Epigallocatechin-3-gallate protects PC12 cells against corticosterone-induced neurotoxicity via the hedgehog signaling pathway. Exp Ther Med 2018; 15:4284-4290. [PMID: 29731823 PMCID: PMC5920970 DOI: 10.3892/etm.2018.5936] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 06/08/2017] [Indexed: 12/21/2022] Open
Abstract
It has been acknowledged that environmental stress is a risk factor for developing mental disorders. Chronic stress may contribute to the hyperactivation of the hypothalamic-pituitary-adrenal (HPA) axis and a sustained rise in the levels of glucocorticoids (GCs). A high concentration of corticosterone (CORT) damages neuronal PC12 cells. It has been reported that (−)-Epigallocatechin-3-gallate (EGCG), a major component of green tea, exhibits neuroprotective activity. However, the protective effect of EGCG on neuronal cells injured by CORT remains to be elucidated. The present study aimed to identify the effects of EGCG on CORT-injured neuronal PC12 cells and its associated mechanisms of action. CORT-injured PC12 cells were pretreated with EGCG with or without cyclopamine. Cell viability was assessed using an MTT assay, changes in cell morphology were observed using phase-contrast microscopy, cellular apoptosis was assessed by Hoechst 33342 staining, cell proliferation was measured using a cell counting kit-8 assay, mRNA levels were measured by reverse transcription-quantitative polymerase chain reaction and protein expression was assessed using western blot analysis. The current study demonstrated that exposure to high concentrations of CORT induced cytotoxicity and downregulated the Sonic hedgehog pathway (Shh) in PC12 cells. These effects were attenuated by EGCG. However, the EGCG-mediated neuroprotective effects, as well as upregulation of the Shh pathway were all attenuated by the Shh signaling inhibitor cyclopamine. These results indicate that EGCG protects PC12 cells from CORT-induced neurotoxicity via activation of the Shh signaling pathway.
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Affiliation(s)
- Sha Feng
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jue Liu
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
| | - Biao Cheng
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
| | - Aiping Deng
- Department of Pharmacy, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China
| | - Hong Zhang
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Kook YJ, Tian J, Jeon YS, Choi MJ, Song JE, Park CH, Reis RL, Khang G. Nature-derived epigallocatechin gallate/duck's feet collagen/hydroxyapatite composite sponges for enhanced bone tissue regeneration. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:984-996. [PMID: 29207926 DOI: 10.1080/09205063.2017.1414480] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Scaffolds mimicking structural and chemical characteristics of the native bone tissues are critical for bone tissue engineering. Herein, we have developed and characterized epigallocatechin gallate/duck's feet collagen/hydroxyapatite (EGCG/DC/HAp) composite sponges that enhanced the bone tissue regeneration. The three-dimensional composite sponges were synthesized by loading various amounts (i.e. 1, 5 and 10 μM) of EGCG to duck feet derived collagen followed by freeze-drying and then coating with hydroxyapatite. Several measuremental techniques were employed to examine the properties of the as-fabricated composite sponges including morphology and structure, porosity, compressive strength, etc. and as well compared with pristine duck feet derived collagen. SEM observations of EGCG/DC/HAp sponges showed the formation of a highly porous collagen matrix with EGCG embodiment. The porosity and pore size of sponges were found to increase by high EGCG content. The compressive strength was calculated as 3.54 ± 0.04, 3.63 ± 0.03, 3.89 ± 0.05, 4.047 ± 0.05 MPa for 1, 5 and 10 μM EGCG/DC/HAp sponges, respectively. Osteoblast-like cell (BMSCs isolated from rabbit) culture and in vivo experiments with EGCG/DC/HAp sponges implanted in nude mouse followed by histological staining showed enhanced cell internalization and attachment, cell proliferation, alkaline phosphatase expressions, indicating that EGCG/DC/HAp sponges have ahigh biocompatibility. Moreover, highEGCG content in the EGCG/DC/HAp sponges have led to increased cellular behavior. Collectively, the 5 μM of EGCG/DC/HAp sponges were suggested as the potential candidates for bone tissue regeneration.
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Affiliation(s)
- Yeon Ji Kook
- a Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer Fusion Research Center , Chonbuk National University , Jeonju , Republic of Korea
| | - Jingwen Tian
- b Department of Orthopaedic Surgery, Medical School and Research Institute of Clinical Medicine , Chonbuk National University , Jeonju , Republic of Korea
| | - Yoo Shin Jeon
- a Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer Fusion Research Center , Chonbuk National University , Jeonju , Republic of Korea
| | - Min Jung Choi
- a Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer Fusion Research Center , Chonbuk National University , Jeonju , Republic of Korea
| | - Jeong Eun Song
- a Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer Fusion Research Center , Chonbuk National University , Jeonju , Republic of Korea
| | - Chan Hum Park
- c Nano-Bio Regenerative Medical Institute, School of Medicine , Hallym University , Chuncheon , Republic of Korea
| | - Rui L Reis
- d 3B's Research Group - Biomaterials, Biodegradables and Biomimetics , University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine , Guimaraes , Portugal
| | - Gilson Khang
- a Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer Fusion Research Center , Chonbuk National University , Jeonju , Republic of Korea
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Ying L, Yan F, Zhao Y, Gao H, Williams BR, Hu Y, Li X, Tian R, Xu P, Wang Y. (-)-Epigallocatechin-3-gallate and atorvastatin treatment down-regulates liver fibrosis-related genes in non-alcoholic fatty liver disease. Clin Exp Pharmacol Physiol 2017; 44:1180-1191. [PMID: 28815679 DOI: 10.1111/1440-1681.12844] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 07/13/2017] [Accepted: 07/20/2017] [Indexed: 12/11/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) and associated advanced liver diseases have become prevalent conditions in many countries and are associated with increased mortality. Gene expression profiles in NAFLD have been examined recently but changes in expression elicited by chemical compound treatments have not been investigated. Since (-)-Epigallocatechin-3-gallate (EGCG) and atorvastatin (ATST) exhibit similar efficacy in NAFLD models, we reasoned that some common key genes might alter after treatment of EGCG and ATST. Accordingly, we applied integrated bioinformatics analyses of RNA microarray data from EGCG and ATST treatment groups compared to controls in a NAFLD phenotypic mouse model. Using differential expression (DE) analysis, Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis, Gene Set Enrichment Analysis (GSEA) and ClueGO enrichment, shared EGCG and ATST down-regulated pathways were identified which included extracellular matrix (ECM)-receptor interaction and protein processing in endoplasmic reticulum (ER). To refine key genes associated with liver fibrosis, a human NAFLD signature derived from patients of different fibrosis stages was analyzed. The results showed that fibrosis-related genes Col1a1, Col1a2, Col3a1 and Col6a3 were significantly down-regulated. These four genes were further validated as down-regulated in an independent mouse NAFLD dataset. We conclude that EGCG and ATST treatment results in the significant down-regulation of genes related to liver fibrosis.
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Affiliation(s)
- Le Ying
- Department of Tea Science, Zhejiang University, Hangzhou, China.,Hudson Institute of Medical Research, Clayton, Vic, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic, Australia
| | - Feng Yan
- Hudson Institute of Medical Research, Clayton, Vic, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic, Australia
| | - Yueling Zhao
- Department of Tea Science, Zhejiang University, Hangzhou, China
| | - Hugh Gao
- Hudson Institute of Medical Research, Clayton, Vic, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic, Australia
| | - Bryan Rg Williams
- Hudson Institute of Medical Research, Clayton, Vic, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, Vic, Australia
| | - Yiqun Hu
- Faculty of Medical Laboratory Science, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaofang Li
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Run Tian
- Department of Orthopaedics, the Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Ping Xu
- Department of Tea Science, Zhejiang University, Hangzhou, China
| | - Yuefei Wang
- Department of Tea Science, Zhejiang University, Hangzhou, China
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Yamamoto N, Shibata M, Ishikuro R, Tanida M, Taniguchi Y, Ikeda-Matsuo Y, Sobue K. Epigallocatechin gallate induces extracellular degradation of amyloid β-protein by increasing neprilysin secretion from astrocytes through activation of ERK and PI3K pathways. Neuroscience 2017; 362:70-78. [DOI: 10.1016/j.neuroscience.2017.08.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/08/2017] [Accepted: 08/15/2017] [Indexed: 01/29/2023]
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Effect of low-frequency but high-intensity noise exposure on swine brain blood barrier permeability and its mechanism of injury. Neurosci Lett 2017; 662:122-128. [PMID: 28941872 DOI: 10.1016/j.neulet.2017.09.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Vibroacousitic disease (VAD) is caused by excessive exposure to low-frequency but high-intensity noise. The integrity of the brain blood barrier (BBB) is essential for the brain. The study aimed to investigate the effect of noise exposure on the BBB. METHODS Healthy male Bama swine were exposed to 50, 70, 100, and 120Hz, 140dB noise for 30min. After exposure, CT brain imaging and ex vivo fluorescent imaging of parenchymal EB leakage were performed (each group consisted of N=3 swine). The human cerebral microvascular endothelial cells were exposed to 70Hz, 140dB noise for 5min. RESULTS The BBB permeability assay showed that 50, 70, and 100Hz with 140dB noise exposure accelerated BBB permeability, and the BBB opening at 70Hz was most serious and reversible. Additionally, CT images demonstrated that the noise-induced opening of the BBB caused no intracerebral hemorrhage. This noise-induced BBB opening was related to the downregulation of zo-1 and occludin. Finally, cysteinyl leukotriene receptor 1 (CysLT1 receptor) was found to regulate noise-induced tight junction defects in vitro. CONCLUSIONS In conclusion, noise exposure accelerates the formation of a high-permeability BBB with leaky tight junctions through a CysLT1-mediated mechanism, which warrants additional research.
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40
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Green Tea Extracts Epigallocatechin-3-gallate for Different Treatments. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5615647. [PMID: 28884125 PMCID: PMC5572593 DOI: 10.1155/2017/5615647] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 06/28/2017] [Indexed: 02/05/2023]
Abstract
Epigallocatechin-3-gallate (EGCG), a component extracted from green tea, has been proved to have multiple effects on human pathological and physiological processes, and its mechanisms are discrepant in cancer, vascularity, bone regeneration, and nervous system. Although there are multiple benefits associated with EGCG, more and more challenges are still needed to get through. For example, EGCG shows low bioactivity via oral administration. This review focuses on effects of EGCG, including anti-cancer, antioxidant, anti-inflammatory, anticollagenase, and antifibrosis effects, to express the potential of EGCG and necessity of further studies in this field.
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41
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Renno WM, Benov L, Khan KM. Possible role of antioxidative capacity of (-)-epigallocatechin-3-gallate treatment in morphological and neurobehavioral recovery after sciatic nerve crush injury. J Neurosurg Spine 2017; 27:593-613. [PMID: 28777065 DOI: 10.3171/2016.10.spine16218] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE This study examined the capacity of the major polyphenolic green tea extract (-)-epigallocatechin-3-gallate (EGCG) to suppress oxidative stress and stimulate the recovery and prompt the regeneration of sciatic nerve after crush injury. METHODS Adult male Wistar rats were randomly assigned to one of 4 groups: 1) Naïve, 2) Sham (sham injury, surgical control group), 3) Crush (sciatic nerve crush injury treated with saline), and 4) Crush+EGCG (sciatic nerve crush injury treated with intraperitoneally administered EGCG, 50 mg/kg). All animals were tested for motor and sensory neurobehavioral parameters throughout the study. Sciatic nerve and spinal cord tissues were harvested and processed for morphometric and stereological analysis. For the biochemical assays, the time points were Day 1, Day 7, Day 14, and Day 28 after nerve injury. RESULTS After sciatic nerve crush injury, the EGCG-treated animals (Crush+EGCG group) showed significantly better recovery of foot position and toe spread and 50% greater improvement in motor recovery than the saline-treated animals (Crush group). The Crush+EGCG group displayed an early hopping response at the beginning of the 3rd week postinjury. Animals in the Crush+EGCG group also showed a significant reduction in mechanical allodynia and hyperalgesia latencies and significant improvement in recovery from nociception deficits in both heat withdrawal and tail flick withdrawal latencies compared with the Crush group. In both the Crush+EGCG and Crush groups, quantitative evaluation revealed significant morphological evidence of neuroregeneration according to the following parameters: mean cross-sectional area of axons, myelin thickness in the sciatic nerve (from Week 4 to Week 8), increase of myelin basic protein concentration and gene expression in both the injured sciatic nerve and spinal cord, and fiber diameter to axon diameter ratio and myelin thickness to axon diameter ratio at Week 2 after sciatic nerve injury. However, the axon area remained much smaller in both the Crush+EGCG and Crush groups compared with the Sham and Naïve groups. The number of axons per unit area was significantly decreased in the Crush+EGCG and Crush groups compared with controls. Sciatic nerve injury produced generalized oxidative stress manifested as a significant increase of isoprostanes in the urine and decrease of the total antioxidant capacity (TAC) of the blood from Day 7 until Day 14. EGCG-treated rats showed significantly less increase of isoprostanes than saline-treated animals and also showed full recovery of TAC levels by Day 14 after nerve injury. In spinal cord tissue analysis, EGCG-treated animals showed induced glutathione reductase and suppressed induction of heme oxygenase 1 gene expression compared with nontreated animals. CONCLUSIONS EGCG treatment suppressed the crush-induced production of isoprostanes and stimulated the recovery of the TAC and was associated with remarkable alleviation of motor and sensory impairment and significant histomorphological evidence of neuronal regeneration following sciatic nerve crush injury in rats. The findings of this study suggest that EGCG can be used as an adjunctive therapeutic remedy for nerve injury. However, further investigations are needed to establish the antioxidative mechanism involved in the regenerative process after nerve injury. Only upregulation of glutathione reductase supports the idea that EGCG is acting indirectly via induction of enzymes or transcription factors.
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Affiliation(s)
| | - Ludmil Benov
- Biochemistry, Faculty of Medicine, Kuwait University, Safat, Kuwait
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42
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Martins A, Schimidt HL, Garcia A, Colletta Altermann CD, Santos FW, Carpes FP, da Silva WC, Mello-Carpes PB. Supplementation with different teas from Camellia sinensis prevents memory deficits and hippocampus oxidative stress in ischemia-reperfusion. Neurochem Int 2017; 108:287-295. [PMID: 28465087 DOI: 10.1016/j.neuint.2017.04.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/22/2017] [Accepted: 04/28/2017] [Indexed: 02/06/2023]
Abstract
Memory and cognition impairments resultant of ischemic stroke could be minimized or avoided by antioxidant supplementation. In this regard, the neuroprotective potential of Green tea from Camellia sinensis has been investigated. However, there is a lack of information regarding the neuroprotective potential of others teas processed from the Camellia sinensis. Here we investigate the neuroprotective role of green, red, white and black tea on memory deficits and brain oxidative stress in a model of ischemic stroke in rats. Our findings show that green and red teas prevent deficits in object and social recognition memories, but only green tea protects against deficits in spatial memory and avoids hippocampal oxidative status and intense necrosis and others alterations in the brain tissue. In summary, green tea shows better neuroprotection in ischemic stroke than the others teas from Camellia sinensis.
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Affiliation(s)
- Alexandre Martins
- Physiology Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Helen L Schimidt
- Applied Neuromechanics Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Alexandre Garcia
- Physiology Research Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | | | - Francielli W Santos
- Biotechnology of Reproduction Laboratory, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Felipe P Carpes
- Applied Neuromechanics Group, Federal University of Pampa, Uruguaiana, RS, Brazil
| | - Weber Cláudio da Silva
- Neuropsychopharmacology Laboratory, University of the Centro-Oeste of Paraná, PR, Brazil
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He Y, Tan D, Mi Y, Bai B, Jiang D, Zhou X, Ji S. Effect of epigallocatechin-3-gallate on acrylamide-induced oxidative stress and apoptosis in PC12 cells. Hum Exp Toxicol 2017; 36:1087-1099. [PMID: 27920337 DOI: 10.1177/0960327116681648] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acrylamide (ACR) is a chemical intermediate utilized in industry. ACR is also formed during heating of foods containing carbohydrates and amino acids. Therefore, humans are widely exposed to ACR, and ACR neurotoxicity in humans is a significant public health issue attracting wide attention. In this study, we investigated the potential neuroprotective effects of epigallocatechin-3-gallate (EGCG), the most abundant polyphenolic compound in green tea, in PC12 cells treated with ACR. ACR-treated PC12 cells pretreated with various concentrations of EGCG (2.5, 5 and 10 μM) for 24 h had increased viability and acetylcholinesterase activity and reduced apoptosis and necrosis compared to cells exposed to ACR alone. EGCG reduced the expression of bax mRNA, decreased cytochrome c release, reduced intracellular calcium levels, inactivated caspase 3 and increased mitochondrial membrane potential, suggesting that EGCG prevents ACR-induced apoptosis through a mitochondrial-mediated pathway. In addition, EGCG inhibited the formation of reactive oxygen species and lipid peroxidation while enhancing superoxide dismutase activity and glutathione levels, thereby reducing oxidative stress. Our results indicate that pretreatment of PC12 cells with EGCG attenuates ACR-induced apoptosis by reducing oxidative stress. Therefore, drinking green tea may reduce nerve injury induced by ACR.
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Affiliation(s)
- Y He
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - D Tan
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - Y Mi
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - B Bai
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - D Jiang
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - X Zhou
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
| | - S Ji
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang, People's Republic of China
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He Y, Tan D, Bai B, Wu Z, Ji S. Epigallocatechin-3-gallate attenuates acrylamide-induced apoptosis and astrogliosis in rat cerebral cortex. Toxicol Mech Methods 2017; 27:298-306. [DOI: 10.1080/15376516.2017.1279251] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yin He
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang City, People’s Republic of China
| | - Dehong Tan
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang City, People’s Republic of China
| | - Bing Bai
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang City, People’s Republic of China
| | - Zhaoxia Wu
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang City, People’s Republic of China
| | - Shujuan Ji
- College of Food, Shenyang Agricultural University, Shenhe District, Shenyang City, People’s Republic of China
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45
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He Y, Tan D, Mi Y, Zhou Q, Ji S. Epigallocatechin-3-gallate attenuates cerebral cortex damage and promotes brain regeneration in acrylamide-treated rats. Food Funct 2017; 8:2275-2282. [DOI: 10.1039/c6fo01823h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
ACR increased the rate of nestin-positive cells implying that ACR caused cell damage, and EGCG decreased the rates of nestin-positive cells against ACR suggesting that EGCG may promote cell regeneration.
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Affiliation(s)
- Yin He
- College of Food
- Shenyang Agricultural University
- Shenyang City 110866
- People's Republic of China
| | - Dehong Tan
- College of Food
- Shenyang Agricultural University
- Shenyang City 110866
- People's Republic of China
| | - Yan Mi
- College of Food
- Shenyang Agricultural University
- Shenyang City 110866
- People's Republic of China
| | - Qian Zhou
- College of Food
- Shenyang Agricultural University
- Shenyang City 110866
- People's Republic of China
| | - Shujuan Ji
- College of Food
- Shenyang Agricultural University
- Shenyang City 110866
- People's Republic of China
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46
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Dutta D, Mohanakumar KP. Tea and Parkinson's disease: Constituents of tea synergize with antiparkinsonian drugs to provide better therapeutic benefits. Neurochem Int 2015; 89:181-90. [DOI: 10.1016/j.neuint.2015.08.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/04/2015] [Accepted: 08/06/2015] [Indexed: 12/14/2022]
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47
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Ma L, He H, Liu X, Zhang G, Li L, Yan S, Li K, Shi M. Involvement of cannabinoid receptors in infrasonic noise-induced neuronal impairment. Acta Biochim Biophys Sin (Shanghai) 2015; 47:647-53. [PMID: 26058582 DOI: 10.1093/abbs/gmv049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 04/17/2015] [Indexed: 02/03/2023] Open
Abstract
Excessive exposure to infrasound, a kind of low-frequency but high-intensity sound noise generated by heavy transportations and machineries, can cause vibroacoustic disease which is a progressive and systemic disease, and finally results in the dysfunction of central nervous system. Our previous studies have demonstrated that glial cell-mediated inflammation may contribute to infrasound-induced neuronal impairment, but the underlying mechanisms are not fully understood. Here, we show that cannabinoid (CB) receptors may be involved in infrasound-induced neuronal injury. After exposure to infrasound at 16 Hz and 130 dB for 1-14 days, the expression of CB receptors in rat hippocampi was gradually but significantly decreased. Their expression levels reached the minimum after 7- to 14-day exposure during which the maximum number of apoptotic cells was observed in the CA1. 2-Arachidonoylglycerol (2-AG), an endogenous agonist for CB receptors, reduced the number of infrasound-triggered apoptotic cells, which, however, could be further increased by CB receptor antagonist AM251. In animal behavior performance test, 2-AG ameliorated the infrasound-impaired learning and memory abilities of rats, whereas AM251 aggravated the infrasound-impaired learning and memory abilities of rats. Furthermore, the levels of proinflammatory cytokines tumor necrosis factor alpha and interleukin-1β in the CA1 were upregulated after infrasound exposure, which were attenuated by 2-AG but further increased by AM251. Thus, our results provide the first evidence that CB receptors may be involved in infrasound-induced neuronal impairment possibly by affecting the release of proinflammatory cytokines.
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Affiliation(s)
- Lei Ma
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Hua He
- Department of Specific Diagnosis, PLA 323 Hospital, Xi'an 710032, China
| | - Xuedong Liu
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Guangyun Zhang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Li Li
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Song Yan
- Fourth Military Medical University, Xi'an 710032, China
| | - Kangchu Li
- Department of Radiation Medicine and Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Fourth Military Medical University, Xi'an 710032, China
| | - Ming Shi
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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48
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Wang H, Wang J, Yang Q, Zhang X, Gao P, Xu S, Sun X, Wang Y. Synthesis of a Novel Nitronyl Nitroxide Radical and Determination of its Protective Effects Against Infrasound-Induced Injury. Neurochem Res 2015; 40:1526-36. [PMID: 26100649 DOI: 10.1007/s11064-015-1602-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 04/26/2015] [Accepted: 05/04/2015] [Indexed: 02/08/2023]
Abstract
Infrasound causes functional disorders and structural injury to the central nervous system. However, few anti-infrasound drugs exist, and they are inefficient. Nitronyl nitroxide radicals have been reported to be good antioxidants that act as superoxide dismutase mimics and directly react with reactive oxygen species, such as ·OH, H2O2, and O 2 (∙) -. Our previous research showed that the nitronyl nitroxide radical L-NNNBP has good protective effects against β-amyloid deposition and memory deficits in an AD rat model of APP/PS1. The objective of the present study was to find a new group of anti-infrasound drugs and determine the underlying pharmacological actions of nitronyl nitroxide radicals against infrasound-induced neuronal impairment in vivo. We synthesized a new stable nitronyl nitroxide radical, NRbt, and characterized its crystal structure. The results of the anti-oxidative damage effects of NRbt and the positive control drug tempol showed that they could significantly increase the SOD activity, CAT activity and GSH level and decrease the MDA level in rat hippocampi compared with infrasound exposure without pretreatment. Moreover, the ability of NRbt to regulate the activity or level of these biochemical markers was better than that of tempol. Our results showed that both NRbt and tempol significantly protected against the learning and memory impairments induced by infrasound exposure in a Morris water maze, but there were no significant differences in the path length or escape latency between the rats in the tempol group and the three NRbt groups (P > 0.05). In addition, the infrasound-induced neuronal apoptosis in rat hippocampi was significantly suppressed by NRbt and tempol. The results demonstrated that compared with the infrasound exposure group, the expression of Bcl-2 was up-regulated and the expressions of Bax and caspase-3 were down-regulated in rats pretreated with NRbt (40 mg/kg) or tempol (40 mg/kg). These results showed that the newly synthesized nitronyl nitroxide radical, NRbt, may be an effective anti-infrasound drug because of its capacity to inhibit the oxidative damage of free radicals induced by infrasound exposure.
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Affiliation(s)
- Haibo Wang
- School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
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Wang Y, Liu N, Bian X, Sun G, Du F, Wang B, Su X, Li D. Epigallocatechin-3-gallate reduces tubular cell apoptosis in mice with ureteral obstruction. J Surg Res 2015; 197:145-54. [PMID: 25913488 DOI: 10.1016/j.jss.2015.03.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/04/2015] [Accepted: 03/13/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Tubular cell apoptosis plays a crucial role in different kinds of renal diseases. Epigallocatechin-3-gallate (EGCG), a polyphenol extracted from green tea, has been shown to inhibit renal fibrosis in unilateral ureteral obstruction (UUO) mice, but its role in preventing tubular cell apoptosis and the underlying signaling mechanisms still remains unclear. MATERIALS AND METHODS Mice subjected to UUO were intraperitoneally administered EGCG (5 mg/kg) for 14 d. Normal rat kidney proximal tubular epithelial cell line NRK-52E was induced by transforming growth factor β1 (TGF-β1). Periodic acid-schiff and Masson's trichrome staining was used for histologic study. TUNEL, Hoechst staining, and flow cytometry analysis were used to measure the apoptotic status of tubular cells. Western blotting was used to determine the expression of apoptotic-associated proteins and mitogen-activated protein kinase pathway proteins. RESULTS EGCG significantly attenuated tubular injury and renal tubulointerstitial fibrosis in the obstructed kidneys of UUO mice. In addition, EGCG prevented UUO and TGF-β1-induced tubular apoptosis in a dose-dependent manner. In parallel, protein expression of B-clell lymphoma-2 (Bcl-2) was upregulated and protein expressions of Bcl-2 accosiated X protein (Bax), cleaved caspase 3, and cleaved poly ADP-ribose polymerase (PARP) were downregulated by EGCG. Furthermore, UUO and TGF-β1-stimulated phosphorylation of mitogen-activated protein kinase was inhibited by EGCG. CONCLUSIONS EGCG effectively reduces tubular cell apoptosis induced by UUO and may have potential as a clinical treatment in patients with chronic kidney disease.
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Affiliation(s)
- Yanqiu Wang
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Na Liu
- Department of Nephrology, Ordos Central Hospital, Ordos, Inner Mongolia, People's Republic of China
| | - Xiaohui Bian
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Guangping Sun
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Feng Du
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Bowen Wang
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Xuesong Su
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Detian Li
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.
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