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Yao M, Xiao Y, Sun Y, Zhang B, Ding Y, Ma Q, Liang F, Yang Z, Ge W, Liu S, Xin L, Yin J, Zhu X. Association of maternal gut microbial metabolites with gestational diabetes mellitus: evidence from an original case-control study, meta-analysis, and Mendelian randomization. Eur J Clin Nutr 2024:10.1038/s41430-024-01502-z. [PMID: 39223299 DOI: 10.1038/s41430-024-01502-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 07/06/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND The associations of gut microbial metabolites, such as trimethylamine N-oxide (TMAO), its precursors, and phenylacetylglutamine (PAGln), with the risk of gestational diabetes mellitus (GDM) remain unclear. METHODS Serum samples of 201 women with GDM and 201 matched controls were collected and then targeted metabolomics was performed to examine the metabolites of interest. Multivariable conditional logistic regression was applied to investigate the relationship between metabolites and GDM. Meta-analysis was performed to combine our results and four similar articles searched from online databases, and Mendelian randomization (MR) analysis was eventually conducted to explore the causalities. RESULTS In the case-control study, after dichotomization and comparing the higher versus the lower group, the adjusted odds ratio and 95% confidence interval of choline and L-carnitine with GDM were 2.124 (1.186-3.803) and 0.293 (0.134-0.638), respectively; but neutral relationships between TMAO, betaine, and PAGln with GDM were observed. The following meta-analysis consistently revealed that L-carnitine was negatively associated with GDM. However, MR analyses showed no evidence of causalities. CONCLUSIONS Maternal levels of L-carnitine were related to the risk of GDM in both the original case-control study and meta-analysis. However, we did not observe any genetic evidence to establish a causal relationship between this metabolite and GDM.
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Affiliation(s)
- Mengxin Yao
- Suzhou Center for Disease Prevention and Control, Suzhou, China
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Yue Xiao
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Yanqun Sun
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, China
| | - Bing Zhang
- Department of Geriatrics, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, China
| | - Yaling Ding
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Qiuping Ma
- Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, 58 Changsheng Road, Suzhou, China
| | - Fei Liang
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Zhuoqiao Yang
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Wenxin Ge
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China
| | - Songliang Liu
- Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, 58 Changsheng Road, Suzhou, China
| | - Lili Xin
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, Medical College of Soochow University, Suzhou, China
| | - Jieyun Yin
- Department of Epidemiology and Health Statistics, Medical College of Soochow University, Suzhou, China.
- Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, Medical College of Soochow University, Suzhou, China.
| | - Xiaoyan Zhu
- Suzhou Center for Disease Prevention and Control, Suzhou, China.
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Xu H, Yang N, Wang BY, Zhou L, Xu LL, Chen Y, Wang DJ, Ge WH. Phenylacetyl glutamine (PAGln) enhances cardiomyocyte death after myocardial infarction through β1 adrenergic receptor. ENVIRONMENTAL TOXICOLOGY 2024; 39:1682-1699. [PMID: 38041472 DOI: 10.1002/tox.24063] [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: 11/03/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
This study aims to explore the roles of phenylacetyl glutamine (PAGln) on myocardial infarction (MI) pathogenesis. Here, using targeted metabolomics analysis, it was found that the plasma metabolite PAGln was upregulated in coronary artery disease (CAD) patients and MI mice and could be an independent risk factor for CAD. In vivo and in vitro functional experiments revealed that PAGln pretreatment enhanced MI-induced myocardial injury and cardiac fibrosis, as evident by the increased infarct size, cardiomyocyte death, and the upregulated expression of cardiac fibrosis markers (Col1a1 and α-SMA). Combined with RNA-sequencing analysis and G protein-coupled receptor (GPCR) inhibitor, we found that the GPCR signaling activation is essential for PAGln-mediated effects on cardiomyocyte death. Furthermore, drug affinity responsive target stability and cellular thermal shift assay demonstrated that PAGln could interact with β1-adrenergic receptor (AR). Moreover, β1-AR blocker treatment indeed extended the cardiac remodeling after PAGln-enhanced MI. These results suggest that PAGln might be a potential therapeutic target for extending the cardiac remodeling window in MI patients that signals via β1-AR.
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Affiliation(s)
- Hang Xu
- School of Pharmacy, Faculty of Medicine, Macau University of Science and Technology, Macau SAR, China
- Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Na Yang
- Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Bao-Yan Wang
- Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Lin Zhou
- Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Li-Li Xu
- Department of Pharmacy, China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing, China
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Yan Chen
- Department of Pharmacy, China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing, China
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Dong-Jin Wang
- Department of Cardio-Thoracic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Wei-Hong Ge
- Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
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Song Y, Wei H, Zhou Z, Wang H, Hang W, Wu J, Wang DW. Gut microbiota-dependent phenylacetylglutamine in cardiovascular disease: current knowledge and new insights. Front Med 2024; 18:31-45. [PMID: 38424375 DOI: 10.1007/s11684-024-1055-9] [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: 08/28/2023] [Accepted: 12/04/2023] [Indexed: 03/02/2024]
Abstract
Phenylacetylglutamine (PAGln) is an amino acid derivate that comes from the amino acid phenylalanine. There are increasing studies showing that the level of PAGln is associated with the risk of different cardiovascular diseases. In this review, we discussed the metabolic pathway of PAGln production and the quantitative measurement methods of PAGln. We summarized the epidemiological evidence to show the role of PAGln in diagnostic and prognostic value in several cardiovascular diseases, such as heart failure, coronary heart disease/atherosclerosis, and cardiac arrhythmia. The underlying mechanism of PAGln is now considered to be related to the thrombotic potential of platelets via adrenergic receptors. Besides, other possible mechanisms such as inflammatory response and oxidative stress could also be induced by PAGln. Moreover, since PAGln is produced across different organs including the intestine, liver, and kidney, the cross-talk among multiple organs focused on the function of this uremic toxic metabolite. Finally, the prognostic value of PAGln compared to the classical biomarker was discussed and we also highlighted important gaps in knowledge and areas requiring future investigation of PAGln in cardiovascular diseases.
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Affiliation(s)
- Yaonan Song
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Haoran Wei
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Zhitong Zhou
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Huiqing Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Weijian Hang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
| | - Junfang Wu
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China.
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, 430030, China
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Wei H, Wu J, Wang H, Huang J, Li C, Zhang Y, Song Y, Zhou Z, Sun Y, Xiao L, Peng L, Chen C, Zhao C, Wang DW. Increased circulating phenylacetylglutamine concentration elevates the predictive value of cardiovascular event risk in heart failure patients. J Intern Med 2023; 294:515-530. [PMID: 37184278 DOI: 10.1111/joim.13653] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
BACKGROUND Phenylacetylglutamine (PAGln)-a newly discovered microbial metabolite produced by phenylalanine metabolism-is reportedly associated with cardiovascular events via adrenergic receptors. Nonetheless, its association with cardiovascular outcomes in heart failure (HF) patients remains unknown. OBJECTIVES This study aimed to prospectively investigate the prognostic value of PAGln for HF. METHODS Plasma PAGln levels were quantified by liquid chromatography-tandem mass spectrometry. We first assessed the association between plasma PAGln levels and the incidence of adverse cardiovascular events in 3152 HF patients (including HF with preserved and reduced ejection fraction) over a median follow-up period of 2 years. The primary endpoint was the composite of cardiovascular death or heart transplantation. We then assessed the prognostic role of PAGln in addition to the classic biomarker N-terminal pro-B-type natriuretic peptide (NT-proBNP). The correlation between PAGln levels and β-blocker use was also investigated. RESULTS In total, 520 cardiovascular deaths or heart transplantations occurred in the HF cohort. Elevated PAGln levels were independently associated with a higher risk of the primary endpoint in a dose-response manner, regardless of HF subtype. Concurrent assessment of PAGln and NT-proBNP levels enhanced risk stratification among HF patients. PAGln further showed prognostic value at low NT-proBNP levels. Additionally, the interaction effects between PAGln and β-blocker use were not significant. CONCLUSIONS Plasma PAGln levels are an independent predictor of an increased risk of adverse cardiovascular events in HF. Our work could provide joint and complementary prognostic value to NT-proBNP levels in HF patients.
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Affiliation(s)
- Haoran Wei
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junfang Wu
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huiqing Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Jin Huang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Chenze Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Institute of Myocardial Injury and Repair, Wuhan University, Wuhan, China
| | - Yuxuan Zhang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Yaonan Song
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Zhitong Zhou
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Yang Sun
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Lei Xiao
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Liyuan Peng
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Chen Chen
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Chunxia Zhao
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
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Fu H, Kong B, Zhu J, Huang H, Shuai W. Phenylacetylglutamine increases the susceptibility of ventricular arrhythmias in heart failure mice by exacerbated activation of the TLR4/AKT/mTOR signaling pathway. Int Immunopharmacol 2023; 116:109795. [PMID: 36736224 DOI: 10.1016/j.intimp.2023.109795] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/18/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND Intestinal microbial metabolites are a risk factor for cardiovascular diseases, and phenylacetylglutamine (PAGln) is a newly discovered intestinal metabolite in the latest study. In addition, elevated plasma PAGln concentration was associated with increased mortality and hospitalization rates in patients with heart failure (HF). However, the mechanism of PAGln leading to increased HF mortality is unclear. The present study was performed to investigate whether the PAGln deteriorated the susceptibility of ventricular arrhythmias (VAs) in the setting of HF. METHODS Thoracic aortic coarctation (TAC) was used to construct an animal model of HF in mice. Intraperitoneal injection of PAGln for 4 weeks intervened in HF mice. The concentration of PAGln was quantitatively determined by liquid chromatography-tandem mass spectrometry. Cardiac function was assessed by echocardiography; assessment of cardiac electrophysiological indexes was measured by electrocardiogram (ECG) and programmed electrical stimulation in isolated cardiac perfusion. Masson was stained for collagen deposition, and wheat germ agglutinin (WGA) was stained for the cross-sectional area of the myocytes. The qRT-PCR and Western Blotting were used to determine target gene expression in vivo and in vitro. RESULTS PAGln promoted the activation of cardiac inflammation and fibrosis and deteriorated cardiac function in HF mice. Moreover, PAGln extended APD90, shortened the ERP/APD90 and increased the incidence of VAs following HF in isolated heart perfusion. Mechanistically, PAGln significantly enhanced the activation of the TLR4/AKT/mTOR signaling pathway in vivo and in vitro. CONCLUSIONS PAGln increased the susceptibility of VAs in HF mice by activating the TLR4/AKT/mTOR signaling pathway.
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Affiliation(s)
- Hui Fu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei, China
| | - Bin Kong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei, China
| | - Jun Zhu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei, China
| | - He Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei, China.
| | - Wei Shuai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China; Cardiovascular Research Institute of Wuhan University, Wuhan 430060, Hubei, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei, China.
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Hartvigsson O, Barman M, Rabe H, Sandin A, Wold AE, Brunius C, Sandberg AS. Associations of maternal and infant metabolomes with immune maturation and allergy development at 12 months in the Swedish NICE-cohort. Sci Rep 2021; 11:12706. [PMID: 34135462 PMCID: PMC8209090 DOI: 10.1038/s41598-021-92239-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/07/2021] [Indexed: 02/05/2023] Open
Abstract
Allergic diseases are the most common chronic diseases in childrenin the Western world, but little is know about what factors influence immune maturation and allergy development. We therefore aimed to associate infant and maternal metabolomes to T- and B-cell subpopulations and allergy diagnosis. We performed liquid chromatography-mass spectrometry based untargeted metabolomics on blood plasma from mothers (third trimester, n = 605; delivery, n = 558) and from the umbilical cord (n = 366). The measured metabolomes were associated to T- and B-cell subpopulations up to 4 months after delivery and to doctor´s diagnosed eczema, food allergy and asthma at one year of age using random forest analysis. Maternal and cord plasma at delivery could predict the number of CD24+CD38low memory B-cells (p = 0.033, n = 26 and p = 0.009, n = 22), but future allergy status could not be distinguished from any of the three measured metabolomes. Replication of previous literature findings showed hypoxanthine to be upregulated in the umbilical cord of children with subsequent asthma. This exploratory study suggests foetal immune programming occuring during pregnancy as the metabolomic profiles of mothers and infants at delivery related to infants' B-cell maturation.
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Affiliation(s)
- Olle Hartvigsson
- Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden.
| | - Malin Barman
- Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Hardis Rabe
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, Gothenburg, Sweden
| | - Anna Sandin
- Department of Clinical Sciences, Unit of Pediatrics, Umeå University, Umeå, Sweden
| | - Agnes E Wold
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, Gothenburg, Sweden
| | - Carl Brunius
- Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
| | - Ann-Sofie Sandberg
- Food and Nutrition Science, Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
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Wang J, Lu X, Zheng K, Jing L. Glutamine's protection against brain damage in septic rats via increased protein oxygen-N-acetylglucosamine modification. Neuroreport 2021; 32:214-222. [PMID: 33470760 DOI: 10.1097/wnr.0000000000001582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to observe the effect of glutamine (Gln) on brain damage in septic rats and explore its possible mechanism. METHODS Ninety-three Sprague-Dawley rats were randomly divided into five groups: sham operation group, sepsis group, Gln-treated group, quercetin/Gln-treated group, and alloxan/Gln-treated group. The rats in each group were continuously monitored for mean arterial pressure (MAP) and heart rate changes for 16 h. Neuroreflex scores were measured 24 h after surgery. The water content of the brain tissue was measured. Plasma neuron enolase and cysteine protease-3 were measured using the ELISA. The expression levels of heat shock protein 70 (HSP70) and oxygen-N-acetylglucosamine (O-GlcNAc) were determined by western blot analysis. Finally, the brain tissue was observed via hematoxylin and eosin staining. RESULTS The brain tissue water content, plasma neuron enolase content, brain tissue cysteine protease-3 content, and nerve reflex score were significantly lower in the Gln-treated group than in the sepsis group (P < 0.05). At the same time, the pathological brain tissue damage in the Gln-treated group was also significantly reduced. It is worth noting that the expression of HSP70 and the protein O-GlcNAc modification levels in the Gln-treated group were significantly elevated than the levels in the sepsis group (P < 0.05), and reversed by pretreatment with the HSP and O-GlcNAc inhibitors quercetion and alloxan. CONCLUSIONS Gln can attenuate brain damage in rats with sepsis, which may be associated with increased protein O-GlcNAc modification.
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Affiliation(s)
- Jin Wang
- Department of Anesthesiology, Zhongda Hospital, Southeast University, Nanjing, China
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Gyawali A, Kang YS. Transport Alteration of 4-Phenyl Butyric Acid Mediated by a Sodium- and Proton-Coupled Monocarboxylic Acid Transporter System in ALS Model Cell Lines (NSC-34) Under Inflammatory States. J Pharm Sci 2020; 110:1374-1384. [PMID: 33098824 DOI: 10.1016/j.xphs.2020.10.030] [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: 07/29/2020] [Revised: 10/16/2020] [Accepted: 10/18/2020] [Indexed: 12/20/2022]
Abstract
4-Phenyl butyric acid (PBA) has histone deacetylase inhibitory and neuroprotective effects. We aimed to examine the transport alteration activity of PBA in control (WT) and disease (MT) model cell lines of an amyotrophic lateral sclerosis (ALS) model. The transport characteristics of PBA were examined uptake rates and mRNA expression levels in NSC-34 cell lines. PBA uptake was pH, sodium, and concentration dependent. The Km and Vmax values for PBA uptake in the MT were more than two-fold higher than those in the WT. The presence of monocarboxylic acids (MA) and inhibitors of MA transporter (MCT) inhibited the uptake of PBA. PBA showed competitive inhibition in the presence of MAs in both cell lines. SiRNA transfection studies showed that PBA can be transported to NSC-34 cell lines through sodium-coupled MCT1. TNF-α and H2O2 increased, but LPS and glutamate reduced the uptake rate after the pretreatment of the MT cell lines. SMCT1 mRNA expression levels, in the presence of oxidative stress inducing agents, showed consistent results with the uptake results. These results demonstrate that PBA can be transported to the ALS model NSC-34 cell lines by sodium- and proton-coupled MCTs, and MA plays a vital role in the prevention of neurodegenerative diseases.
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Affiliation(s)
- Asmita Gyawali
- College of Pharmacy and Drug Information Research Institute, Sookmyung Women's University, Seoul, Republic of Korea
| | - Young-Sook Kang
- College of Pharmacy and Drug Information Research Institute, Sookmyung Women's University, Seoul, Republic of Korea.
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The Protective Effects of Levo-Tetrahydropalmatine on ConA-Induced Liver Injury Are via TRAF6/JNK Signaling. Mediators Inflamm 2018; 2018:4032484. [PMID: 30622431 PMCID: PMC6304924 DOI: 10.1155/2018/4032484] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/02/2018] [Accepted: 08/30/2018] [Indexed: 02/06/2023] Open
Abstract
Aims Levo-tetrahydropalmatine (L-THP) is an active ingredient of Corydalis yanhusuo W. T. Wang, which has many bioactive properties. Herein, we investigated the protective effects of L-THP on concanavalin A- (ConA-) induced hepatitis in mice and explored its possible mechanisms of these effects. Main Methods Balb/c mice were intravenously injected with 25 mg/kg ConA to generate a model of acute autoimmune hepatitis, and L-THP (20 or 40 mg/kg) was administered orally once daily for 5 d before the ConA injection. The liver enzyme levels, proinflammatory cytokine levels, and other marker protein levels were determined 2, 8, and 24 h after ConA injection. Results L-THP could decrease serum liver enzymes and pathological damage by reducing the release of inflammatory factors like IL-6 and TNF-α. The results of Western Blot and PCR indicated that L-THP could ameliorate liver cell apoptosis and autophagy. L-THP could suppress T lymphocyte proliferation and the production of TNF-α and IL-6 induced by ConA in a dose-dependent manner in vitro. Additionally, the protective functions of L-THP depended on downregulating TRAF6/JNK signaling. Conclusion. The present study indicated that L-THP attenuated acute liver injury in ConA-induced autoimmune hepatitis by inhibiting apoptosis and autophagy via the TRAF6/JNK pathway.
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