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Nasrollahpour H, Mirzaie A, Sharifi M, Rezabakhsh A, Khalilzadeh B, Rahbarghazi R, Yousefi H, Klionsky DJ. Biosensors; a novel concept in real-time detection of autophagy. Biosens Bioelectron 2024; 254:116204. [PMID: 38507929 DOI: 10.1016/j.bios.2024.116204] [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: 05/27/2023] [Revised: 02/23/2024] [Accepted: 03/09/2024] [Indexed: 03/22/2024]
Abstract
Autophagy is an early-stage response with self-degradation properties against several insulting conditions. To date, the critical role of autophagy has been well-documented in physiological and pathological conditions. This process involves various signaling and functional biomolecules, which are involved in different steps of the autophagic response. During recent decades, a range of biochemical analyses, chemical assays, and varied imaging techniques have been used for monitoring this pathway. Due to the complexity and dynamic aspects of autophagy, the application of the conventional methodology for following autophagic progression is frequently associated with a mistake in discrimination between a complete and incomplete autophagic response. Biosensors provide a de novo platform for precise and accurate analysis of target molecules in different biological settings. It has been suggested that these devices are applicable for real-time monitoring and highly sensitive detection of autophagy effectors. In this review article, we focus on cutting-edge biosensing technologies associated with autophagy detection.
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Affiliation(s)
| | - Arezoo Mirzaie
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Sharifi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aysa Rezabakhsh
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Balal Khalilzadeh
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Applied Cellular Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Hadi Yousefi
- Department of Applied Cellular Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Daniel J Klionsky
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA.
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Tai HC, Chung SD, Chien CT, Yu HJ. Retraction Note: Sulforaphane Improves Ischemia-Induced Detrusor Overactivity by Downregulating the Enhancement of Associated Endoplasmic Reticulum Stress, Autophagy, and Apoptosis in Rat Bladder. Sci Rep 2023; 13:7205. [PMID: 37137930 PMCID: PMC10156653 DOI: 10.1038/s41598-023-34470-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Affiliation(s)
- Huai-Ching Tai
- Department of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- Graduate Institution of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shiu-Dong Chung
- Graduate Institution of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Urology, Far East Memory Hospital, New Taipei City, Taiwan
- Graduate Program in Biomedical Informatics, College of Informatics, Yuan-Ze University, Chung-Li, Tao-Yuan, Taiwan
| | - Chiang-Ting Chien
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan.
| | - Hong-Jeng Yu
- Department of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
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Li MY, Liu HY, Wu DT, Kenaan A, Geng F, Li HB, Gunaratne A, Li H, Gan RY. L-Theanine: A Unique Functional Amino Acid in Tea ( Camellia sinensis L.) With Multiple Health Benefits and Food Applications. Front Nutr 2022; 9:853846. [PMID: 35445053 PMCID: PMC9014247 DOI: 10.3389/fnut.2022.853846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/14/2022] [Indexed: 11/24/2022] Open
Abstract
Tea (Camellia sinensis L.) is a very popular health drink and has attracted increasing attention in recent years due to its various bioactive substances. Among them, L-theanine, a unique free amino acid, is one of the most important substances in tea and endows tea with a special flavor. Moreover, L-theanine is also a bioactive compound with plenty of health benefits, including antioxidant, anti-inflammatory, neuroprotective, anticancer, metabolic regulatory, cardiovascular protective, liver and kidney protective, immune regulatory, and anti-obesity effects. Due to the unique characteristics and beneficial functions, L-theanine has potential applications in the development of functional foods. This review summarized the influencing factors of L-theanine content in teas, the main health benefits and related molecular mechanisms of L-theanine, and its applications in food, understanding of which can provide updated information for the further research of L-theanine.
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Affiliation(s)
- Ming-Yue Li
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China.,Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Hong-Yan Liu
- Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Ding-Tao Wu
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Ahmad Kenaan
- National Graphene Institute, The University of Manchester, Manchester, United Kingdom
| | - Fang Geng
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Anil Gunaratne
- Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka
| | - Hang Li
- Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
| | - Ren-You Gan
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, China.,Research Center for Plants and Human Health, Chengdu National Agricultural Science and Technology Center, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, China
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Fluids affecting bladder urgency and lower urinary symptoms: results from a randomized controlled trial. Int Urogynecol J 2022; 33:1329-1345. [PMID: 35435467 DOI: 10.1007/s00192-022-05090-z] [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: 03/30/2021] [Accepted: 01/03/2022] [Indexed: 10/18/2022]
Abstract
INTRODUCTION AND HYPOTHESIS Caffeinated, alcoholic, artificially sweetened, carbonated, and acidic beverages are pervasive and consumed in large quantities. Reputedly, these beverages are "irritating to the bladder" and result in heightened void frequency, but prior studies lack control for intake volume. We tested the null hypothesis that women recruited from the community who demonstrate overactive bladder symptoms will show no difference by groups in void frequency when one group is instructed to replace listed beverages by substituting non-irritants (emphasis on water or milk) and the other group is instructed in healthy eating. METHODS This was a parallel-group randomized controlled trial design with a three-period fixed sequence (baseline and 2 and 6 weeks post-baseline). We recruited 105 community women with overactive bladder symptoms. INCLUSION CRITERIA >7 voids per day or 2 voids per night, daily intake of ≥16 oz. (473 ml) of beverages containing the ingredients listed above, and ≥ 32 oz. (946 ml) of total fluid intake. Stratified randomization was conducted. The primary outcome was average daily void frequency on a 3-day diary. RESULTS Participants were 86% white, mean (SD) age was 46.6 (17.6) years, and baseline void frequency was 9.2 (2.9) voids per day. At 2 and 6 weeks, estimated average (SD) difference in void frequency between group 1 and group 2 was -0.46 (0.57) and -0.31 (0.57) voids per day (p > 0.05); the null hypothesis was not rejected. CONCLUSIONS Women who reduce potentially irritating beverages while maintaining total fluid volume intake is not predictive of void frequency. Further research on type and volume of beverage intake is recommended.
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Ebrahimi S, Alalikhan A, Aghaee-Bakhtiari SH, Hashemy SI. The redox modulatory effects of SP/NK1R system: Implications for oxidative stress-associated disorders. Life Sci 2022; 296:120448. [PMID: 35247438 DOI: 10.1016/j.lfs.2022.120448] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/04/2022] [Accepted: 02/26/2022] [Indexed: 02/08/2023]
Abstract
Oxidative stress which refers to redox imbalance with increased generation of reactive oxygen species (ROS) has been associated with the pathophysiology of diverse disease conditions. Recently, a close, yet not fully understood, relation between oxidative stress and neuropeptides, in particular, substance P (SP), has been reported in certain conditions. SP has been shown to affect the cellular redox environment through activation of neurokinin-1receptor (NK1R). It seems that SP/NK1R system and oxidative stress can act either synergistically or antagonistically in a context-dependent manner, thereby, influencing the pathology of various clinical disorders either destructively or protectively. Importantly, the interactions between oxidative stress and SP/NK1R system can be pharmacologically targeted. Therefore, a better understanding of the redox modulatory properties of SP/NK1R signaling will pave the way for identifying new therapeutic possibilities for attenuating oxidative stress-mediated damage. Towards this end, we performed a comprehensive search through PubMed/Medline and Scopus databases and discussed all related existing literature regarding the interplay between oxidative stress and SP/NK1R system as well as their implication in various clinical disorders, to provide a clear view and hence better management of oxidative damage.
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Affiliation(s)
- Safieh Ebrahimi
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abbas Alalikhan
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Hamid Aghaee-Bakhtiari
- Bioinformatics Research Group, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Biotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Isaac Hashemy
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Hu S, Luo L, Zeng L. Tea combats circadian rhythm disorder syndrome via the gut-liver-brain axis: potential mechanisms speculated. Crit Rev Food Sci Nutr 2022; 63:7126-7147. [PMID: 35187990 DOI: 10.1080/10408398.2022.2040945] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Circadian rhythm is an intrinsic mechanism developed by organisms to adapt to external environmental signals. Nowadays, owing to the job and after-work entertainment, staying up late - Circadian rhythm disorders (CRD) are common. CRD is linked to the development of fatty liver, type 2 diabetes, and chronic gastroenteritis, which affecting the body's metabolic and inflammatory responses via multi-organ crosstalk (gut-liver-brain axis, etc.). However, studies on the mechanisms of multi-organ interactions by CRD are still weak. Current studies on therapeutic agents for CRD remain inadequate, and phytochemicals have been shown to alleviate CRD-induced syndromes that may be used for CRD-therapy in the future. Tea, a popular phytochemical-rich beverage, reduces glucolipid metabolism and inflammation. But it is immature and unclear in the mechanisms of alleviation of CRD-mediated syndrome. Here, we have analyzed the threat of CRD to hosts and their offspring' health from the perspective of the "gut-liver-brain" axis. The potential mechanisms of tea in alleviating CRD were further explored. It might be by interfering with bile acid metabolism, tryptophan metabolism, and G protein-coupled receptors, with FXR, AHR, and GPCR as potential targets. We hope to provide new perspectives on the role of tea in the prevention and mitigation of CRD.HighlightsThe review highlights the health challenges of CRD via the gut-liver-brain axis.CRD research should focus on the health effects on healthy models and its offspring.Tea may prevent CRD by regulating bile acid, tryptophan, and GPCR.Potential targets for tea prevention and mitigation of CRD include FXR, AHR and GPCR.A comprehensive assessment mechanism for tea in improving CRD should be established.
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Affiliation(s)
- Shanshan Hu
- College of Food Science, Southwest University, Beibei, Chongqing, People's Republic of China
| | - Liyong Luo
- College of Food Science, Southwest University, Beibei, Chongqing, People's Republic of China
| | - Liang Zeng
- College of Food Science, Southwest University, Beibei, Chongqing, People's Republic of China
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Zhang L, Yao X, Ma M, Ding Y, Zhang H, He X, Song Z. Protective Effect of l-Theanine against DSS-Induced Colitis by Regulating the Lipid Metabolism and Reducing Inflammation via the NF-κB Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14192-14203. [PMID: 34784210 DOI: 10.1021/acs.jafc.1c05839] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The present study revealed the phylactic effects of l-theanine on a DSS-induced colitis mice model. The results showed that 3% DSS treatment significantly induced intestinal damage as reflected by DAI, histopathological feature, and colon length, while l-theanine pretreatment markedly prevented these trends to exert protective effects. Meanwhile, l-theanine pretreatment decreased the levels of TNF-α, IL-1β, IL-6, iNOS, and COX2 on DSS-induced colitis. Notably, DSS inhibited the proliferation and promoted the apoptosis of intestinal epithelial cells, thereby damaging the integrity of the intestinal epithelial barrier, whereas l-theanine also played a protective role by attenuating these deteriorated effects. It was also observed that l-theanine treatment downregulated the levels of p-p65, p65, p-p53, p53, and p-AKT protein expression in acute DSS-induced colitis, which showed the protective function of l-theanine, mainly via the NF-κB signaling pathway. Furthermore, the results of lipid analysis and transcriptome analysis show that l-theanine reversed transcriptional profiles and lipid profiles of colitis models, mainly via the inflammatory reactivity-related pathway. Interestingly, the correlation analysis between transcriptional profiles and lipid profiles showed that inflammatory response-related genes were almost significantly correlated with differential lipid metabolites. In summary, l-theanine plays a protective role in DSS-induced colitis via downregulating the NF-κB signaling pathway and regulating lipid metabolism disorders.
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Affiliation(s)
- Longlin Zhang
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Xiaofeng Yao
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Mengmeng Ma
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Yanan Ding
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Haihan Zhang
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Xi He
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
| | - Zehe Song
- College of Animal Science and Technology, Hunan Agricultural University, Hunan 410128, China
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Zhang L, Ma M, Li Z, Zhang H, He X, Song Z. Protective Effects of L-Theanine on IPEC-J2 Cells Growth Inhibition Induced by Dextran Sulfate Sodium via p53 Signaling Pathway. Molecules 2021; 26:7002. [PMID: 34834090 PMCID: PMC8624936 DOI: 10.3390/molecules26227002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/11/2021] [Accepted: 11/17/2021] [Indexed: 12/02/2022] Open
Abstract
L-theanine is a nonprotein amino acid found in tea leaves and has been widely used as a safe food additive in beverages or foods because of its varied bioactivities. The aim of this study was to reveal the in vitro gastrointestinal protective effects of L-theanine in DSS-induced intestinal porcine enterocyte (IPEC-J2) cell models using molecular and metabolic methods. Results showed that 2.5% dextran sulfate sodium (DSS) treatment inhibited the cell proliferation of IPEC-J2 and blocked the normal operation of the cell cycle, while L-theanine pretreatment significantly preserved these trends to exert protective effects. L-theanine pre-treatment also up-regulated the EGF, CDC2, FGF2, Rb genes and down-regulated p53, p21 proliferation-related mRNA expression in DSS-treated cells, in accompany with p53 signaling pathway inhibition. Meanwhile, metabolomics analysis revealed that L-theanine and DSS treated IPEC-J2 cells have different metabolomic profiles, with significant changes in the key metabolites involved in pyrimidine metabolism and amino acid metabolism, which play an important role in nucleotide metabolism. In summary, L-theanine has a beneficial protection in DSS-induced IPEC-J2 cells via promoting proliferation and regulating metabolism disorders.
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Affiliation(s)
- Longlin Zhang
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
| | - Mengmeng Ma
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
| | - Zhengyi Li
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
| | - Haihan Zhang
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
| | - Xi He
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
| | - Zehe Song
- Department of Animal Science, College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (L.Z.); (M.M.); (Z.L.); (H.Z.); (X.H.)
- Hunan Co-Innovation Center of Animal Production Safety, Hunan Agricultural University, Changsha 410128, China
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Xiao R, Zhao HC, Yan TT, Zhang Q, Huang YS. Angiotensin II and hypoxia induce autophagy in cardiomyocytes via activating specific protein kinase C subtypes. Cardiovasc Diagn Ther 2021; 11:744-759. [PMID: 34295701 DOI: 10.21037/cdt-20-883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 05/17/2021] [Indexed: 11/06/2022]
Abstract
Background The purpose of this study was to explore the role of protein kinase C (PKC) isozymes and reactive oxygen species (ROS) in hypoxia and angiotensin (Ang) II-induced autophagy. Methods Primary cardiomyocytes were isolated from Sprague-Dawley (SD) neonatal rats and cultured in hypoxia and/or Ang II conditions. Dihydroethidium fluorescence staining was used to detect the content of ROS. Cardiomyocyte autophagy was determined using Monodansylcadaverine fluorescence staining and Western blot. We also inhibited ROS production to explore the relationship between ROS and autophagy. ELISA was used to detect the contents of PKC δ and PKC ε. After inhibition of PKC δ activation and PKC ε expression by lentiviral siRNA, ROS content and autophagy of cultured cardiomyocytes were detected. Results Hypoxia and Ang II stimulation increased autophagy in cardiomyocytes, accompanied by increased intracellular ROS production. Inhibiting ROS following hypoxia or Ang II stimulation significantly suppressed autophagy in comparison with hypoxia or Ang II stimulation group. Inhibiting PKC δ significantly reduced ROS production and autophagy activity following hypoxia or accompanied with Ang II stimulation except Ang II stimulation alone. Knockdown of PKC ε notably decreased ROS production and autophagy in response to Ang II alone and in combination with hypoxia rather than hypoxia alone. Conclusions Both hypoxia and Ang II stimulation can induce autophagy in cardiomyocytes through increasing intracellular ROS. However, hypoxia and Ang II stimulation induced myocardial autophagy via PKC δ and PKC ε, respectively.
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Affiliation(s)
- Rong Xiao
- Burn Center of PLA, No. 990 Hospital of PLA, Zhumadian, China
| | - Hai-Chun Zhao
- Burn Center of PLA, No. 990 Hospital of PLA, Zhumadian, China
| | - Tian-Tian Yan
- Burn Center of PLA, No. 990 Hospital of PLA, Zhumadian, China
| | - Qiong Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, The Third Military Medical University, Chongqing, China
| | - Yue-Sheng Huang
- Department of Wound Repair, Institute of Wound Repair, Shenzhen People's Hospital, the First Affiliated Hospital of Southern University of Science and Technology, and the Second Clinical Medical College of Jinan University, Shenzhen, China
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Abstract
Apoptosis has been found in bladder affected by various types of voiding dysfunction. In animal studies, higher levels of apoptosis were observed in conditions of both detrusor overactivity and underactivity than in normal bladders. However, it has been difficult to establish the exact underlying mechanism of apoptosis in these conditions and to find new therapeutic targets because the causes of voiding dysfunction are diverse and the coexistence of various types of voiding problems is common. Furthermore, the lack of studies of the human detrusor contributes to our incomplete understanding of these issues. Therefore, this revies discuss the role of apoptosis in detrusor contractility based on previous studies.
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Protective effects of L-theanine on rats with dextran sulfate sodium-induced inflammatory bowel disease. Arch Pharm Res 2020; 43:821-862. [PMID: 32720164 DOI: 10.1007/s12272-020-01248-9] [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: 12/16/2019] [Accepted: 06/29/2020] [Indexed: 10/23/2022]
Abstract
The aim of this study is to evaluate the anti-inflammatory and protective effects of L-theanine in inflammatory bowel disease (IBD) and to identify the underlying molecular mechanisms. Rats were pre-treated with L-theanine at 0, 50, 200, or 800 mg/kg/day. IBD was induced in rats using dextran sulfate sodium (DSS). Histopathological analysis suggests that L-theanine can suppress DSS-induced IBD with significant inhibition of inflammation in large and small intestinal tissues. Moreover, the 200 mg/kg/day L-theanine-treated DSS group had higher body and small intestine weights, a lower disease activity index and expression of inflammatory factors than the DSS group without pre-treatment. In RNA sequencing and tandem mass tag labeling analyses, large number of mRNAs and proteins expression level differed when compared with the DSS-induced rats with and without 200 mg/kg/day L-theanine pre-treatment. Moreover, Kyoto Encyclopedia of Genes and Genomes pathway analysis indicates the anti-inflammatory activities of L-theanine in DSS-induced IBD, with a high representation of genes in "Cholesterol metabolism" and "Retinol metabolism" pathways. Analysis of protein-protein interaction networks further indicates the involvement of these two pathways. These studies suggest that medium-dose L-theanine pre-treatment could ameliorate DSS-induced IBD through molecular mechanisms involving cholesterol and retinol metabolism.
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ILC2 Proliferated by IL-33 Stimulation Alleviates Acute Colitis in Rag1 -/- Mouse through Promoting M2 Macrophage Polarization. J Immunol Res 2020; 2020:5018975. [PMID: 32676507 PMCID: PMC7334786 DOI: 10.1155/2020/5018975] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/06/2020] [Accepted: 05/18/2020] [Indexed: 11/30/2022] Open
Abstract
This study was to identify functions of ILC2, a newly found innate lymphoid cell which mainly locates in mucosa organs like lungs and intestines, in IBD. We injected rIL-33 protein to C57/BL6 mouse to explore how IL-33 induces ILC2 proliferation. The results showed that ILC2 reached a proliferation peak at day 5 and expressed multiple surface markers like CD127, C-kit, CD69, CD44, ST2, CD27, DR3, MHCII, and CD90.2. ILC2 also expressed high quantity of IL-13 and IL-5 and few IL-17A which indicates a potentially immunological function in IBD development. Afterwards, we transferred sort purified ILC2 to Rag1−/− mouse given DSS to induce acute colitis in order to explore the innate function of ILC2. Data showed that ILC2 alleviates DSS-induced acute innate colitis by repairing epithelial barrier and restore body weight. Furthermore, we found that ILC2 can cause macrophages polarizing to M2 macrophages in the gut. Therefore, we concluded that ILC2 played a therapeutic role in mouse acute colitis.
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Xiong Q, Hu Y, Ye X, Song Z, Yuan J, Xiong B, Jing Y, Shi Y, Xu T, Wu J, Zhang Q, Liang J, Zhou L. Extraction, purification and characterization of sulphated polysaccharide from Bellamya quadrata and its stabilization roles on atherosclerotic plaque. Int J Biol Macromol 2020; 152:314-326. [PMID: 32109475 DOI: 10.1016/j.ijbiomac.2020.02.243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/11/2020] [Accepted: 02/22/2020] [Indexed: 11/28/2022]
Abstract
The aim of this paper was to investigate the extraction, purification and characterization of sulphated polysaccharide (BQPS) from Bellamya quadrata and its stabilization roles on atherosclerotic plaque. Firstly, crude polysaccharide (CBQP) from Bellamya quadrata was extracted by protease enzyme assisted extraction. Moreover, its optimal parameters were obtained by the response surface method as follows: the ratio of water to raw material of 24:1, enzyme dosage of 285 U/g, enzymolysis pH value of 4.7 and temperature of 67 °C. Secondly, CBQP was further purified to obtain the target polysaccharide BQPS by Q Sepharose Fast Flow and Sephacryl S-400 gel column chromatography. Then, the characterization of BQPS revealed that it possessed a total polysaccharide content of 91.88 ± 1.23%, sulfuric acid group content of 9.12 ± 1.59% and molecular weight of 91.1 kDa. BQPS was only consisted of glucose without any proteins. Finally, BQPS was confirmed to have a significant stabilizing effect on atherosclerotic plaque and its mechanism was related to the selective promotion of autophagy with the precisely right strength.
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Affiliation(s)
- Qingping Xiong
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China; Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China.
| | - Youdong Hu
- Department of Geriatric Medicine, Huai'an Second People's Hospital, Huai'an 223002, Jiangsu, China
| | - Xianying Ye
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
| | - Zhuoyue Song
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China
| | - Jun Yuan
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China
| | - Boyang Xiong
- Department of Pharmacy, Jiangsu Food & Pharmaceutical Science College, Huai'an 223003, Jiangsu, China
| | - Yi Jing
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Yingying Shi
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Tingting Xu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jun Wu
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China
| | - Qianghua Zhang
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jian Liang
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong, China.
| | - Li Zhou
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal Research, Huaiyin Institute of Technology, Huai'an 223003, Jiangsu, China; Department of Intensive Care Unit, Dazhou Central Hospital, Dazhou 635000, Sichuan, China.
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Wu KC, Lin WY, Sung YT, Wu WY, Cheng YH, Chen TS, Chiang BJ, Chien CT. Glycine tomentella hayata extract and its ingredient daidzin ameliorate cyclophosphamide-induced hemorrhagic cystitis and oxidative stress through the action of antioxidation, anti-fibrosis, and anti-inflammation. CHINESE J PHYSIOL 2019; 62:188-195. [PMID: 31670282 DOI: 10.4103/cjp.cjp_60_19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
We explored the therapeutic potential of intragastric administration of traditional Chinese medicine Glycine tomentella Hayata (I-Tiao-Gung [ITG]) extract and its major component Daidzin on cyclophosphamide (CYP)-induced cystitis, oxidative stress, fibrosis, inflammation, and bladder hyperactivity in rats. Female Wistar rats were divided into control, CYP (200 mg/kg), CYP+ITG (1.17 g/kg/day), and CYP+Daidzin (12.5 mg/kg/day) groups. We measured the voiding function by the transcystometrogram and evaluated the pathology with the hematoxylin and eosin and Masson stain. We determined the bladder reactive oxygen species (ROS) amount by an ultrasensitive chemiluminescence analyzer, the expression of 3-nitrotyrosine (3-NT) and NADPH oxidase 4 (NOX4) by Western blot and the expression of multiple cytokine profiles, including matrix metalloproteinase (MMP)-8 and tissue inhibitor of metalloproteinase (TIMP)-1 through a cytokine array. ITG extract contains 1.07% of Daidzin through high-performance liquid chromatography. The effect of ITG extract and Daidzin in scavenging hydrogen peroxide activity was more efficient than distilled water. CYP-induced higher urination frequency, shorter intercontraction interval, and lower maximal voiding pressure in the bladders and these symptoms were significantly ameliorated in CYP+ITG and CYP+Daidzin groups. The amount of in vivo bladder ROS and the expression of 3-NT and NOX4 expressions were significantly increased in CYP group but were efficiently decreased in the CYP+ITG and CYP+Daidzin groups. CYP-induced fibrosis, hemorrhage, leukocyte infiltration, and edema in the bladders were significantly attenuated in the CYP+ITG and CYP+Daidzin groups. These results suggested that ITG extract and its active component Daidzin effectively improved CYP-induced oxidative stress, inflammation, and fibrosis through inhibiting the MMP-8, TIMP-1, and oxidative stress.
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Affiliation(s)
- Kung-Chieh Wu
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
| | - Wei-Yu Lin
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei; Department of Urology, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Yi-Ting Sung
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
| | - Wei-Yi Wu
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
| | - Yu-Hsiuan Cheng
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
| | - Tung-Sheng Chen
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
| | - Bing-Juin Chiang
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei; Department of Urology, Cardinal Tien Hospital, New Taipei City, Taiwan
| | - Chiang-Ting Chien
- Department of Life Science, College of Science, National Taiwan Normal University, Taipei, Taiwan
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15
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Enhanced extracellular gamma glutamyl transpeptidase production by overexpressing of PrsA lipoproteins and improving its mRNA stability in Bacillus subtilis and application in biosynthesis of L-theanine. J Biotechnol 2019; 302:85-91. [DOI: 10.1016/j.jbiotec.2019.06.302] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/22/2019] [Accepted: 06/25/2019] [Indexed: 11/21/2022]
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16
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Martin Jensen M, Jia W, Schults AJ, Ye X, Prestwich GD, Oottamasathien S. IL-33 mast cell axis is central in LL-37 induced bladder inflammation and pain in a murine interstitial cystitis model. Cytokine 2018; 110:420-427. [PMID: 29784508 PMCID: PMC6103803 DOI: 10.1016/j.cyto.2018.05.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 12/23/2022]
Abstract
Interstitial cystitis (IC), also known as painful bladder syndrome (PBS), is a debilitating chronic condition that afflicts over 3 million women above the age of 18 in the U.S., and most patients fail to respond to current treatment options. Mast cells have previously been implicated as both a diagnostic and prognostic marker in IC/PBS. Patients with IC/PBS have been shown to have elevated levels of IL-33, a cytokine released in response to tissue insult, in their urine. We hypothesize that mast cell-mediated inflammation induced from IL-33 may play an important role in initiating pain and inflammation in IC/PBS. A human cathelicidin, LL-37, which is found at elevated levels in IC/PBS patients, was used to induce an IC/PBS-like state of inflammation and bladder pain in mast cell deficient C-kit (-/-) and wild type C57Bl/6 (WT) mice. Inflammation was quantified using myeloperoxidase (MPO) expression in bladder tissues measured via ELISA. Response rate to suprapubic stimulation from von Frey filaments was used to assess the relative pain and discomfort. Both types of mice increased IL-33 expression in response to LL-37 exposure. However, mast cell deficient mice demonstrated significantly lower levels of inflammation (p < 0.001) and reduced pain response (p < 0.001) compared to WT mice. These findings implicate an IL-33-mast cell dependent axis with a potential etiology of pain and inflammation in IC/PBS. Future therapeutics aimed at targeting the IL-33 - mast cell axis could potentially serve as useful targets for treating IC/PBS.
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Affiliation(s)
- M Martin Jensen
- Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
| | - Wanjian Jia
- Division of Urology, Section of Pediatric Urology, University of Utah, Salt Lake City, UT, 84113, USA
| | - Austin J Schults
- Division of Urology, Section of Pediatric Urology, University of Utah, Salt Lake City, UT, 84113, USA
| | - Xiangyang Ye
- Department of Pharmacotherapy, University of Utah, Salt Lake City, UT, 84112, USA
| | - Glenn D Prestwich
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - Siam Oottamasathien
- Division of Urology, Section of Pediatric Urology, University of Utah, Salt Lake City, UT, 84113, USA; Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT, 84112, USA; Department of Surgery and Division of Pediatric Urology, Primary Children's Hospital, Salt Lake City, UT, 84113, USA; Department of Pediatric Surgery, Division of Pediatric Urology, Massachusetts General Hospital for Children, Harvard Medical School, Boston, MA 02114, USA.
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17
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Wang D, Gao Q, Zhao G, Kan Z, Wang X, Wang H, Huang J, Wang T, Qian F, Ho CT, Wang Y. Protective Effect and Mechanism of Theanine on Lipopolysaccharide-Induced Inflammation and Acute Liver Injury in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7674-7683. [PMID: 29969892 DOI: 10.1021/acs.jafc.8b02293] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Theanine, a unique bioactive constituent from tea ( Camellia sinensis) leaves, is widely used as a functional ingredient and dietary supplement. To evaluate the anti-inflammatory and hepatoprotective effects of theanine and its molecular mechanism, the lipopolysaccharide (LPS)-induced inflammation mouse model was employed in this study. The survival rate of mice in the theanine-treated group increased significantly compared with that of LPS-only group mice. Furthermore, ICR male mice were randomly divided into three or four groups: control, LPS (LPS treatment only), LPS + theanine (20 mg/kg/day), and theanine (theanine treatment only). The results showed that compared with the LPS group, the liver damage and oxidative stress of the theanine-treated group decreased significantly, based on plasma alanine aminotransferase (ALT) and aspartate aminotransferase (AST) concentrations, hepatic total superoxide dismutase (T-SOD), and malondialdehyde (MDA) levels, and histological scores and apoptosis [terminal deoxynucleotide transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) staining and caspase-3 activity] in the liver tissues. Furthermore, compared with no treatment, pretreatment with theanine significantly decreased the release of interleukin (IL)-1β and tumor necrosis factor (TNF)-α, inhibited the expression of several inflammatory factors (including IL-1β, TNF-α, and IL-6), and increased the IL-10/interferon (IFN)-γ ratio in the hepatic tissues. In the LPS-induced inflammation model, theanine inhibited the expression of proinflammatory mediators involved in the nuclear factor-kappa B (NF-κB) pathway, such as inducible nitric oxide synthase (iNOS) and matrix metalloproteinase-3 (MMP-3), and attenuated the phosphorylation of NF-κB in the hepatic tissues. Moreover, theanine suppressed the acute-phase response (elevated nitric oxide and C-reactive protein levels). Furthermore, theanine suppressed the LPS-induced inflammatory state by normalizing hypothalamic-pituitary-adrenal (HPA) axis hyperactivity. Taken together, the results suggest that theanine potentially ameliorates LPS-induced inflammation and acute liver injury; molecular mechanism of action may involve normalization of HPA axis hyperactivity and inactivation of the NF-κB signaling pathway.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Qiang Gao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Guangshan Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Zhipeng Kan
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Xiaoxiao Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Haisong Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Jinbao Huang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Taotao Wang
- Department of Clinical Nutrition , Affiliated Hospital of Jiangsu University , Zhenjiang , Jiangsu 212000 , China
| | - Frank Qian
- Pritzker School of Medicine , University of Chicago , Chicago , Illinois 60637 , United States
| | - Chi-Tang Ho
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
- Department of Food Science , Rutgers University , New Brunswick , New Jersey 08901 , United States
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , Anhui 230036 , China
- International Joint Laboratory on Tea Chemistry and Health Effects , Anhui Agricultural University , Hefei , Anhui 230036 , China
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Li C, Yan Q, Tang S, Xiao W, Tan Z. L-Theanine Protects H9C2 Cells from Hydrogen Peroxide-Induced Apoptosis by Enhancing Antioxidant Capability. Med Sci Monit 2018; 24:2109-2118. [PMID: 29629712 PMCID: PMC5907829 DOI: 10.12659/msm.907660] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND L-theanine is a non-protein amino acid in green tea, and its hepatoprotection and neuroprotection have been verified. However, whether L-theanine can prevent cardiomyocytes from apoptosis is unclear yet. This study evaluated the protective effects of L-theanine on H2O2-induced heart injury in vitro. MATERIAL AND METHODS The certified H9C2 cells were pretreated with L-theanine (0 mM, 4 mM, 8 mM, and 16 mM) for 24 h, followed by 160 µM H2O2 solution for 4 h. The cell viability and antioxidant indices were assayed. Quantitative evaluation of apoptosis was performed by flow cytometric analysis. Nuclear morphology of the cells was monitored by 4',6-diamidino-2-phenylindole staining. Expression of Caspase-3, poly ADP-ribose polymerase (PARP), c-Jun N-terminal kinase (JNK), and mitogen-activated protein kinase p38 was assayed by Western blot. RESULTS Compared to the H2O2 treatment, all doses of L-theanine treatments increased the cell viability, glutathione level, and the activities of glutathione peroxidase and superoxide dismutase (P<0.001). The contents of reactive oxygen species, nitric oxide, and oxidized glutathione were decreased by L-theanine treatments (P<0.001). Meanwhile, L-theanine treatments decreased the apoptosis ratio of H2O2-induced H9C2 cells (P<0.001). Pro-Caspase-3 expression was upregulated and cleavaged-PARP expression was inhibited by L-theanine (P<0.001). However, the phosphorylation of JNK and p38 was not affected by L-theanine treatments (P>0.05). CONCLUSIONS These data indicate that L-theanine pretreatment prevents H2O2-induced apoptosis in H9C2 cells, probably via antioxidant capacity improvement. Therefore, it might be a promising potential drug candidate for prophylaxis of ischemia/reperfusion-induced heart diseases.
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Affiliation(s)
- Chengjian Li
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Regions, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Scienc, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, Hunan, China (mainland).,College of Pharmaceutical Sciences, Xiangnan University, Chenzhou, Hunan, China (mainland).,Department of Pharmacy, Yongzhou Vocational Technical College, Yongzhou, Hunan, China (mainland)
| | - Qiongxian Yan
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Regions, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Scienc, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, Hunan, China (mainland).,National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients from Botanicals, Provincial Co-Innovation Center for Utilization of Botanical Function Ingredients, Hunan Agricultural University, Changsha, Hunan, China (mainland)
| | - Shaoxun Tang
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Regions, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Scienc, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, Hunan, China (mainland).,Hunan Co-Innovation Center of Animal Production Safety, CICAPS, Changsha, Hunan, China (mainland)
| | - Wenjun Xiao
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients from Botanicals, Provincial Co-Innovation Center for Utilization of Botanical Function Ingredients, Hunan Agricultural University, Changsha, Hunan, China (mainland)
| | - Zhiliang Tan
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Regions, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, South-Central Experimental Station of Animal Nutrition and Feed Scienc, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, Hunan, China (mainland).,Hunan Co-Innovation Center of Animal Production Safety, CICAPS, Changsha, Hunan, China (mainland)
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Zeng WJ, Tan Z, Lai XF, Xu YN, Mai CL, Zhang J, Lin ZJ, Liu XG, Sun SL, Zhou LJ. Topical delivery of l-theanine ameliorates TPA-induced acute skin inflammation via downregulating endothelial PECAM-1 and neutrophil infiltration and activation. Chem Biol Interact 2018; 284:69-79. [PMID: 29458014 DOI: 10.1016/j.cbi.2018.02.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/27/2017] [Accepted: 02/13/2018] [Indexed: 02/08/2023]
Abstract
l-theanine, the most abundant free amino acid in tea, has been documented to possess many different bioactive properties through oral or intragastrical delivery. However, little is known about the effect of topical delivery of l-theanine on acute inflammation. In the present study, by using 12-O-tetradecanoylphorbol-13-acetate (TPA, 2.5 μg/ear)-induced ear edema model in mice, we first found that single-dose local pretreatment of l-theanine 30 min before TPA time- and dose-dependently suppressed the increases in both skin thickness and weight. Subsequently l-theanine ameliorated TPA-induced erythema, vascular permeability increase, epidermal and dermal hyperplasia, neutrophil infiltration and activation via downregulating the expression of PECAM-1 (a platelet endothelial adhesion molecule-1) in blood vessels and the production of pro-inflammatory cytokines IL-1β, TNF-α, and mediator cyclooxygenase-2 (COX-2), which is mainly expressed in neutrophils. It highlighted the potential of l-theanine as a locally administrable therapeutic agent for acute cutaneous inflammation.
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Affiliation(s)
- Wei-Jie Zeng
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhi Tan
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xing-Fei Lai
- Tea Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation & Utilization, Guangdong Academy of Agricultural Sciences, Dafeng Road 6th, Guangzhou, 510640, China
| | - Ya-Nan Xu
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Chun-Lin Mai
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jun Zhang
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhen-Jia Lin
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xian-Guo Liu
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Shi-Li Sun
- Tea Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation & Utilization, Guangdong Academy of Agricultural Sciences, Dafeng Road 6th, Guangzhou, 510640, China.
| | - Li-Jun Zhou
- Department of Physiology and Pain Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
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Current Evidence for a Role of Neuropeptides in the Regulation of Autophagy. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5856071. [PMID: 28593174 PMCID: PMC5448050 DOI: 10.1155/2017/5856071] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 04/30/2017] [Indexed: 12/14/2022]
Abstract
Neuropeptides drive a wide diversity of biological actions and mediate multiple regulatory functions involving all organ systems. They modulate intercellular signalling in the central and peripheral nervous systems as well as the cross talk among nervous and endocrine systems. Indeed, neuropeptides can function as peptide hormones regulating physiological homeostasis (e.g., cognition, blood pressure, feeding behaviour, water balance, glucose metabolism, pain, and response to stress), neuroprotection, and immunomodulation. We aim here to describe the recent advances on the role exerted by neuropeptides in the control of autophagy and its molecular mechanisms since increasing evidence indicates that dysregulation of autophagic process is related to different pathological conditions, including neurodegeneration, metabolic disorders, and cancer.
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