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Dagnell M, Arnér ESJ. Endogenous electrophiles and peroxymonocarbonate can link tyrosine phosphorylation cascades with the cytosolic TXNRD1 selenoprotein and the KEAP1/NRF2 system. Curr Opin Chem Biol 2024; 83:102522. [PMID: 39243480 DOI: 10.1016/j.cbpa.2024.102522] [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: 05/30/2024] [Revised: 08/09/2024] [Accepted: 08/09/2024] [Indexed: 09/09/2024]
Abstract
Endogenously formed reactive molecules, such as lipid peroxides, 4-hydroxynonenal, methylglyoxal and other reactive oxygen species, can have major effects on cells. Accumulation of these molecules is counteracted by antioxidant enzymes, including the glutathione (GSH) and thioredoxin (Trx) systems, in turn regulated by the KEAP1/NRF2 system. Receptor tyrosine kinases (RTK) and their counteracting protein tyrosine phosphatases (PTP) are also modulated through redox regulation of PTP activities. The cytosolic selenoprotein thioredoxin reductase (TXNRD1) is particularly prone to attack at its easily accessible catalytic selenocysteine (Sec) residue by reactive electrophilic compounds. Therefore, we here discuss how endogenously formed electrophiles can modulate RTK/PTP signaling in a concentration- and time dependent manner by reactions either directly or indirectly linking TXNRD1 with the KEAP1/NRF2 system. Moreover, recent findings suggest that endogenous formation of peroxymonocarbonate can efficiently inhibit PTP activities and stimulate RTK signaling, seemingly bypassing PTP reduction as otherwise supported by the GSH/Trx systems.
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Affiliation(s)
- Markus Dagnell
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Elias S J Arnér
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden; Department of Selenoprotein Research and the National Tumor Biology Laboratory, National Institute of Oncology, Budapest, Hungary.
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Miranda ER, Varshney P, Mazo CE, Shadiow J, Ludlow AT, Haus JM. Loss of NAMPT and SIRT2 but not SIRT1 attenuate GLO1 expression and activity in human skeletal muscle. Redox Biol 2024; 75:103300. [PMID: 39142179 PMCID: PMC11367650 DOI: 10.1016/j.redox.2024.103300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Accepted: 08/02/2024] [Indexed: 08/16/2024] Open
Abstract
Glyoxalase I (GLO1) is the primary enzyme for detoxification of the reactive dicarbonyl methylglyoxal (MG). Loss of GLO1 promotes accumulation of MG resulting in a recapitulation of diabetic phenotypes. We previously demonstrated attenuated GLO1 protein in skeletal muscle from individuals with type 2 diabetes (T2D). However, whether GLO1 attenuation occurs prior to T2D and the mechanisms regulating GLO1 abundance in skeletal muscle are unknown. GLO1 expression and activity were determined in skeletal muscle tissue biopsies from 15 lean healthy individuals (LH, BMI: 22.4 ± 0.7) and 5 individuals with obesity (OB, BMI: 32.4 ± 1.3). GLO1 protein was attenuated by 26 ± 0.3 % in OB compared to LH skeletal muscle (p = 0.019). Similar reductions for GLO1 activity were observed (p = 0.102). NRF2 and Keap1 expression were equivocal between groups despite a 2-fold elevation in GLO1 transcripts in OB skeletal muscle (p = 0.008). GLO1 knock-down (KD) in human immortalized myotubes promoted downregulation of muscle contraction and organization proteins indicating the importance of GLO1 expression for skeletal muscle function. SIRT1 KD had no effect on GLO1 protein or activity whereas, SIRT2 KD attenuated GLO1 protein by 28 ± 0.29 % (p < 0.0001) and GLO1 activity by 42 ± 0.12 % (p = 0.0150). KD of NAMPT also resulted in attenuation of GLO1 protein (28 ± 0.069 %, p = 0.003), activity (67 ± 0.09 %, p = 0.011) and transcripts (50 ± 0.13 %, p = 0.049). Neither the provision of the NAD+ precursors NR nor NMN were able to prevent this attenuation in GLO1 protein. However, NR did augment GLO1 specific activity (p = 0.022 vs NAMPT KD). These perturbations did not alter GLO1 acetylation status. SIRT1, SIRT2 and NAMPT protein levels were all equivocal in skeletal muscle tissue biopsies from individuals with obesity and lean individuals. These data implicate NAD+-dependent regulation of GLO1 in skeletal muscle independent of altered GLO1 acetylation and provide rationale for exploring NR supplementation to rescue attenuated GLO1 abundance and activity in conditions such as obesity.
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Affiliation(s)
- Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
| | - Pallavi Varshney
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Corey E Mazo
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - James Shadiow
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Andrew T Ludlow
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA.
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Souza JFT, Monico-Neto M, Tufik S, Antunes HKM. Sleep Debt and Insulin Resistance: What's Worse, Sleep Deprivation or Sleep Restriction? Sleep Sci 2024; 17:e272-e280. [PMID: 39268336 PMCID: PMC11390169 DOI: 10.1055/s-0044-1782173] [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: 02/13/2023] [Accepted: 10/05/2023] [Indexed: 09/15/2024] Open
Abstract
Objective To evaluate which condition of sleep debt has a greater negative impact on insulin resistance: sleep deprivation for 24 hours or 4 hours of sleep restriction for 4 nights. Materials and Methods In total, 28 healthy male subjects aged 18 to 40 years were recruited and randomly allocated to two groups: sleep deprivation (SD) and sleep restriction (SR). Each group underwent two conditions: regular sleep (11 pm to 7 am ) and total sleep deprivation for 24 hours (SD); regular sleep (11 pm to 7 am ) and 4 nights of sleep restriction (SR) (1 am to 5 am ). The oral glucose tolerance test (OGTT) was performed, and baseline glucose, insulin, free fatty acids (FFAs), and cortisol were measured. In addition, the area under the curve (AUC) for glucose and insulin, the homeostasis model assessment of insulin resistance (HOMA-IR), and the Matsuda Index (Insulin Sensitivity Index, ISI) were calculated. Results Glucose and insulin had a similar pattern between groups, except at the baseline, when insulin was higher in the sleep debt condition of the SR when compared with the SD ( p < 0.01). In the comparison between regular sleep and sleep debt, the SD had a higher insulin AUC ( p < 0.01) and FFAs ( p = 0.03) after sleep deprivation, and insulin and the insulin AUC increased ( p < 0.01 for both), while the ISI decreased ( p = 0.02) after sleep restriction in the SR. In baseline parameters covariate by the condition of regular sleep, insulin ( p = 0.02) and the HOMA-IR ( p < 0.01) were higher, and cortisol ( p = 0.04) was lower after sleep restriction when compared with sleep deprivation. Conclusion Sleep restriction for 4 consecutive nights is more detrimental to energy metabolism because of the higher insulin values and insulin resistance compared with an acute period of sleep deprivation of 24 hours.
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Affiliation(s)
- Jorge Fernando Tavares Souza
- Departamento de Psicobiologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brazil
| | - Marcos Monico-Neto
- Departamento de Psicobiologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brazil
| | - Sergio Tufik
- Departamento de Psicobiologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brazil
| | - Hanna Karen Moreira Antunes
- Departamento de Psicobiologia, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brazil
- Department of Biosciences, Instituto de Saúde e Sociedade (ISS), Universidade Federal de São Paulo (Unifesp), Santos, SP, Brazil
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Wei X, Sun Z, Wang N, Deng Z, Li W, Ying T, Wu M, Liu Y, He G. Immunometabolic profiling related with gestational diabetes mellitus: a nested case-control study of CD4 + T cell phenotypes and glycemic traits. Acta Diabetol 2024:10.1007/s00592-024-02338-6. [PMID: 39147954 DOI: 10.1007/s00592-024-02338-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 07/06/2024] [Indexed: 08/17/2024]
Abstract
AIMS To investigate immunometabolic associations of CD4+ T cell phenotypes with gestational diabetes mellitus (GDM). METHODS A nested case-control study was conducted comprising 53 pairs of GDM patients and matched controls within a prospective cohort. Metabolomic signatures related to both CD4+ T cell phenotypes and glycemic traits among pregnant women were investigated by weighted gene co-expression network analysis (WGCNA). Multivariable-adjusted generalized linear models were used to explore the associations of CD4+ T cell phenotypes and selected metabolites with GDM. Mediation analysis was conducted to evaluate the mediating effect of selected metabolites on the relationship between CD4+ T cell phenotypes and glycemic traits. RESULTS Higher levels of Treg cells (OR per SD increment (95%CI): 0.57 (0.34, 0.95), p = 0.031) and increased expression of Foxp3 (OR per SD increment (95%CI): 0.59 (0.35, 0.97), p = 0.039) and GATA3 (OR per SD increment (95%CI): 0.42 (0.25, 0.72), p = 0.002) were correlated with a decreased risk of GDM. Plasma pyruvaldehyde, S-adenosylhomocysteine (SAH), bergapten, and 9-fluorenone mediated the association between Tregs and fasting plasma glucose (FPG), with mediation proportions of 46.9%, 39.6%, 52.4%, and 56.9%, respectively. CONCLUSIONS Treg cells and Foxp3 expressions were inversely associated with GDM risk, with potential metabolic mechanisms involving metabolites such as pyruvaldehyde and SAH.
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Affiliation(s)
- Xiaohui Wei
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Zhuo Sun
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Na Wang
- Nursing Department, Obstetrics and Gynaecology Hospital of Fudan University, Shanghai, 200011, China
| | - Zequn Deng
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Wenyun Li
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Tao Ying
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Min Wu
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China
| | - Yuwei Liu
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China.
| | - Gengsheng He
- School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, No.130, Dong'an Road, Xuhui District, Shanghai, 200032, China.
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Kahleova H, Znayenko-Miller T, Motoa G, Eng E, Prevost A, Uribarri J, Holubkov R, Barnard ND. Dietary advanced glycation end-products and their associations with body weight on a Mediterranean diet and low-fat vegan diet: a randomized, cross-over trial. Front Nutr 2024; 11:1426642. [PMID: 39176029 PMCID: PMC11340516 DOI: 10.3389/fnut.2024.1426642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 07/15/2024] [Indexed: 08/24/2024] Open
Abstract
Objective Evidence suggests that changes in dietary advanced glycation end-products (AGEs) may influence body weight, but the effects of different dietary patterns remain to be explored.The aim of this study was to compare the effects of a Mediterranean and a low-fat vegan diet on dietary AGEs and test their association with body weight. Materials and methods In this randomized cross-over trial, 62 overweight adults were assigned to a Mediterranean or a low-fat vegan diet for 16-week periods in random order, separated by a 4-week washout. Body weight was the primary outcome. Three-day diet records were analyzed using the Nutrition Data System for Research software and dietary AGEs were estimated, using an established database. Statistical approaches appropriate for crossover trials were implemented. Results Dietary AGEs decreased by 73%, that is, by 9,413 kilounits AGE/day (95% -10,869 to -7,957); p < 0.001, compared with no change on the Mediterranean diet (treatment effect -10,303 kilounits AGE/day [95% CI -13,090 to -7,516]; p < 0.001). The participants lost 6.0 kg on average on the vegan diet, compared with no change on the Mediterranean diet (treatment effect -6.0 kg [95% CI -7.5 to -4.5]; p < 0.001). Changes in dietary AGEs correlated with changes in body weight (r = +0.47; p < 0.001) and remained significant after adjustment for total energy intake (r = +0.39; p = 0.003). Conclusion Dietary AGEs did not change on the Mediterranean diet but decreased on a low-fat vegan diet, and this decrease was associated with changes in body weight, independent of energy intake. Clinical trial registration https://clinicaltrials.gov/, identifier NCT03698955.
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Affiliation(s)
- Hana Kahleova
- Physicians Committee for Responsible Medicine, Washington, DC, United States
| | | | - Giulianna Motoa
- Physicians Committee for Responsible Medicine, Washington, DC, United States
| | - Emma Eng
- Physicians Committee for Responsible Medicine, Washington, DC, United States
- Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, United States
| | - Alex Prevost
- Physicians Committee for Responsible Medicine, Washington, DC, United States
| | - Jaime Uribarri
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Richard Holubkov
- School of Medicine, University of Utah, Salt Lake City, UT, United States
| | - Neal D. Barnard
- Physicians Committee for Responsible Medicine, Washington, DC, United States
- Adjunct Faculty, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
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Tanaka M, Kanazashi M, Kondo H, Fujino H. Methylglyoxal reduces resistance exercise-induced protein synthesis and anabolic signaling in rat tibialis anterior muscle. J Muscle Res Cell Motil 2024:10.1007/s10974-024-09680-w. [PMID: 39085712 DOI: 10.1007/s10974-024-09680-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Accepted: 07/15/2024] [Indexed: 08/02/2024]
Abstract
Resistance exercise provides significant benefits to skeletal muscle, including hypertrophy and metabolic enhancements, supporting overall health and disease management. However, skeletal muscle responsiveness to resistance exercise is significantly reduced in conditions such as aging and diabetes. Recent reports suggest that glycation stress contributes to muscle atrophy and impaired exercise-induced muscle adaptation; however, its role in the muscle response to resistance exercise remains unclear. Therefore, in this study, we investigated whether methylglyoxal (MGO), a key factor in glycation stress, affects the acute responsiveness of skeletal muscles to resistance exercise, focusing on protein synthesis and the key signaling molecules. This study included 12 8-week-old male Sprague-Dawley rats divided into two groups: one received 0.5% MGO-supplemented drinking water (MGO group) and the other received regular water (control group). After 10 weeks, the left tibialis anterior muscle of each rat was subjected to electrical stimulation (ES) to mimic resistance exercise, with the right muscle serving as a non-stimulated control. Muscle protein-synthesis rates were evaluated with SUnSET, and phosphorylation levels of key signaling molecules (p70S6K and S6rp) were quantified using western blotting. In the control group, stimulated muscles exhibited significantly increased muscle protein synthesis and phosphorylation levels of p70S6K and S6rp. In the MGO group, these increases were attenuated, indicating that MGO treatment suppresses the adaptive response to resistance exercise. MGO diminishes the skeletal muscle's adaptive response to ES-simulated resistance exercise, affecting both muscle protein synthesis and key signaling molecules. The potential influence of glycation stress on the effectiveness of resistance exercise or ES emphasizes the need for individualized interventions in conditions of elevated glycation stress, such as diabetes and aging.
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Affiliation(s)
- Masayuki Tanaka
- Department of Physical Therapy, Faculty of Health Sciences, Okayama Healthcare Professional University, 3-2-18 Daiku, Kita-ku, Okayama-shi, Okayama, 700-0913, Japan
- Department of Physical Therapy, Faculty of Human Sciences, Osaka University of Human Sciences, 1-4-1 Shojaku, Settsu-shi, Osaka, 566-8501, Japan
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| | - Miho Kanazashi
- Department of Health and Welfare, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen- cho, Mihara-shi, Hiroshima, 723-0053, Japan.
| | - Hiroyo Kondo
- Department of Nutrition, Faculty of Health and Nutrition, Shubun University, 6 Nikko-cho, Ichinomiya, Aichi, 491- 0938, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
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Oliveira AL, de Oliveira MG, Mónica FZ, Antunes E. Methylglyoxal and Advanced Glycation End Products (AGEs): Targets for the Prevention and Treatment of Diabetes-Associated Bladder Dysfunction? Biomedicines 2024; 12:939. [PMID: 38790901 PMCID: PMC11118115 DOI: 10.3390/biomedicines12050939] [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: 03/19/2024] [Revised: 04/11/2024] [Accepted: 04/17/2024] [Indexed: 05/26/2024] Open
Abstract
Methylglyoxal (MGO) is a highly reactive α-dicarbonyl compound formed endogenously from 3-carbon glycolytic intermediates. Methylglyoxal accumulated in plasma and urine of hyperglycemic and diabetic individuals acts as a potent peptide glycation molecule, giving rise to advanced glycation end products (AGEs) like arginine-derived hydroimidazolone (MG-H1) and carboxyethyl-lysine (CEL). Methylglyoxal-derived AGEs exert their effects mostly via activation of RAGE, a cell surface receptor that initiates multiple intracellular signaling pathways, favoring a pro-oxidant environment through NADPH oxidase activation and generation of high levels of reactive oxygen species (ROS). Diabetic bladder dysfunction is a bothersome urological complication in patients with poorly controlled diabetes mellitus and may comprise overactive bladder, urge incontinence, poor emptying, dribbling, incomplete emptying of the bladder, and urinary retention. Preclinical models of type 1 and type 2 diabetes have further confirmed the relationship between diabetes and voiding dysfunction. Interestingly, healthy mice supplemented with MGO for prolonged periods exhibit in vivo and in vitro bladder dysfunction, which is accompanied by increased AGE formation and RAGE expression, as well as by ROS overproduction in bladder tissues. Drugs reported to scavenge MGO and to inactivate AGEs like metformin, polyphenols, and alagebrium (ALT-711) have shown favorable outcomes on bladder dysfunction in diabetic obese leptin-deficient and MGO-exposed mice. Therefore, MGO, AGEs, and RAGE levels may be critically involved in the pathogenesis of bladder dysfunction in diabetic individuals. However, there are no clinical trials designed to test drugs that selectively inhibit the MGO-AGEs-RAGE signaling, aiming to reduce the manifestations of diabetes-associated bladder dysfunction. This review summarizes the current literature on the role of MGO-AGEs-RAGE-ROS axis in diabetes-associated bladder dysfunction. Drugs that directly inactivate MGO and ameliorate bladder dysfunction are also reviewed here.
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Affiliation(s)
| | | | | | - Edson Antunes
- Department of Translational Medicine, Pharmacology Area, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas 13084-971, SP, Brazil; (A.L.O.); (M.G.d.O.); (F.Z.M.)
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Kotian NP, Prabhu A, Tender T, Raghu Chandrashekar H. Methylglyoxal Induced Modifications to Stabilize Therapeutic Proteins: A Review. Protein J 2024; 43:39-47. [PMID: 38017314 DOI: 10.1007/s10930-023-10166-w] [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] [Accepted: 10/10/2023] [Indexed: 11/30/2023]
Abstract
Therapeutic proteins are potent, fast-acting drugs that are highly effective in treating various conditions. Medicinal protein usage has increased in the past 10 years, and it will evolve further as we better understand disease molecular pathways. However, it is associated with high processing costs, limited stability, difficulty in being administered as an oral medication, and the inability of large proteins to penetrate tissue and reach their target locations. Many methods have been developed to overcome the problems with the stability and chaperone activity of therapeutic proteins, viz., the addition of external agents (changing the properties of the surrounding solvent by using stabilizing excipients, e.g., amino acids, sugars, polyols) and internal agents (chemical modifications that influence its structural properties, e.g., mutations, glycosylation). However, these methods must completely clear protein instability and chaperone issues. There is still much work to be done on finetuning chaperone proteins to increase their biological efficacy and stability. Methylglyoxal (MGO), a potent dicarbonyl compound, reacts with proteins and forms covalent cross-links. Much research on MGO scavengers has been conducted since they are known to alter protein structure, which may result in alterations in biological activity and stability. MGO is naturally produced within our body, however, its impact on chaperones and protein stability needs to be better understood and seems to vary based on concentration. This review highlights the efforts of several research groups on the effect of MGO on various proteins. It also addresses the impact of MGO on a client protein, α-crystallin, to understand the potential solutions to the protein's chaperone and stability problems.
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Affiliation(s)
- Nainika Prashant Kotian
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Anusha Prabhu
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Tenzin Tender
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Hariharapura Raghu Chandrashekar
- Department of Pharmaceutical Biotechnology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India.
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Berdowska I, Matusiewicz M, Fecka I. Methylglyoxal in Cardiometabolic Disorders: Routes Leading to Pathology Counterbalanced by Treatment Strategies. Molecules 2023; 28:7742. [PMID: 38067472 PMCID: PMC10708463 DOI: 10.3390/molecules28237742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/13/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
Methylglyoxal (MGO) is the major compound belonging to reactive carbonyl species (RCS) responsible for the generation of advanced glycation end products (AGEs). Its upregulation, followed by deleterious effects at the cellular and systemic levels, is associated with metabolic disturbances (hyperglycemia/hyperinsulinemia/insulin resistance/hyperlipidemia/inflammatory processes/carbonyl stress/oxidative stress/hypoxia). Therefore, it is implicated in a variety of disorders, including metabolic syndrome, diabetes mellitus, and cardiovascular diseases. In this review, an interplay between pathways leading to MGO generation and scavenging is addressed in regard to this system's impairment in pathology. The issues associated with mechanistic MGO involvement in pathological processes, as well as the discussion on its possible causative role in cardiometabolic diseases, are enclosed. Finally, the main strategies aimed at MGO and its AGEs downregulation with respect to cardiometabolic disorders treatment are addressed. Potential glycation inhibitors and MGO scavengers are discussed, as well as the mechanisms of their action.
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Affiliation(s)
- Izabela Berdowska
- Department of Medical Biochemistry, Wroclaw Medical University, 50-368 Wroclaw, Poland;
| | | | - Izabela Fecka
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, 50-556 Wroclaw, Poland
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Zeng Q, Yang T, Wei W, Zou D, Wei Y, Han F, He J, Huang J, Guo R. Association between GLO1 variants and gestational diabetes mellitus susceptibility in a Chinese population: a preliminary study. Front Endocrinol (Lausanne) 2023; 14:1235581. [PMID: 38027126 PMCID: PMC10656739 DOI: 10.3389/fendo.2023.1235581] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/06/2023] [Indexed: 12/01/2023] Open
Abstract
Background Glyoxalase 1 (GLO1) plays a crucial role in defending against glycation. Single nucleotide polymorphism (SNP) variants in the GLO1 gene may affect gene expression and alter enzyme activity. However, there have been limited studies evaluating the association between GLO1 and diabetes, especially gestational diabetes mellitus (GDM). Therefore, this study is the first to explore the association of GLO1 SNPs and GDM risk. Methods The study included a total of 500 GDM patients and 502 control subjects. The SNPscan™ genotyping assay was used to genotype rs1781735, rs4746 and rs1130534. To assess the disparities in genotype, allele, and haplotype distributions and their correlation with GDM risk, the independent sample t-test, logistic regression, and chi-square test were employed during the data processing phase. Furthermore, one-way ANOVA was conducted to determine the differences in genotype and blood glucose and methylglyoxal(MG) levels. Results Significant differences were observed in prepregnancy body mass index (pre-BMI), age, systolic blood pressure (SBP), diastolic blood pressure (DBP), and parity between GDM and healthy subjects (P < 0.05). After adjusting for these factors, GLO1 rs1130534 TA remained associated with an increased risk of GDM (TA vs. TT + AA: OR = 1.320; 95% CI: 1.008-1.728; P = 0.044), especially in the pre-BMI ≥ 24 subgroup (TA vs. TT + AA: OR = 2.424; 95% CI: 1.048-5.607; P = 0.039), with fasting glucose levels being significantly elevated in the TA genotype compared to the TT genotype (P < 0.05). Conversely, the GLO1 rs4746 TG was associated with a decreased risk of GDM (TG vs. TT: OR = 0.740; 95% CI: 0.548-0.999; P = 0.049; TG vs. TT + GG: OR = 0.740; 95% CI: 0.548-0.998; P = 0.048). Additionally, the haplotype T-G-T of rs1781735, rs4746 and rs1130534 was associated with a decreased risk of GDM among individuals with a pre-BMI ≥ 24 (OR = 0.423; 95% CI: 0.188-0.955; P = 0.038). Furthermore, the rs1781735 GG genotype was found to be more closely related to maternal MG accumulation and neonatal weight gain (P < 0.05). Conclusion Our findings suggested that GLO1 rs1130534 was associated with an increased susceptibility to GDM and higher blood glucose levels, but GLO1 rs4746 was associated with a decreased risk of GDM. The rs1781735 has been associated with the accumulation of maternal MG and subsequent weight gain in neonates.
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Affiliation(s)
- Qiaoli Zeng
- Department of Internal Medicine, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
- Key Laboratory of Research in Maternal and Child Medicine and Birth Defects, Guangdong Medical University, Foshan, Guangdong, China
- Maternal and Child Research Institute, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
| | - Taili Yang
- Department of Internal Medicine, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
- Key Laboratory of Research in Maternal and Child Medicine and Birth Defects, Guangdong Medical University, Foshan, Guangdong, China
| | - Wenfeng Wei
- Department of Internal Medicine, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
| | - Dehua Zou
- State Key Laboratory of Quality Research in Chinese Medicine, School of Pharmacy, Macau University of Science and Technology, Taipa, Macao, Macao SAR, China
- Guangdong Engineering Research Center of Chinese Medicine & Disease Susceptibility, Jinan University, Guangzhou, Guangdong, China
| | - Yue Wei
- Department of Ultrasound, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
- Department of Ultrasound, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Fengqiong Han
- Department of Obstetric, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
| | - Jieyun He
- Department of Obstetric, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
| | - Jinzhi Huang
- Key Laboratory of Research in Maternal and Child Medicine and Birth Defects, Guangdong Medical University, Foshan, Guangdong, China
- Department of Gynecology, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
| | - Runmin Guo
- Department of Internal Medicine, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
- Key Laboratory of Research in Maternal and Child Medicine and Birth Defects, Guangdong Medical University, Foshan, Guangdong, China
- Maternal and Child Research Institute, Shunde Women and Children’s Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan), Guangdong Medical University, Foshan, Guangdong, China
- Department of Endocrinology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
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11
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Miranda ER, Haus JM. Glyoxalase I is a novel target for the prevention of metabolic derangement. Pharmacol Ther 2023; 250:108524. [PMID: 37722607 DOI: 10.1016/j.pharmthera.2023.108524] [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: 03/01/2023] [Revised: 08/07/2023] [Accepted: 08/29/2023] [Indexed: 09/20/2023]
Abstract
Obesity prevalence in the US has nearly tripled since 1975 and a parallel increase in prevalence of type 2 diabetes (T2D). Obesity promotes a myriad of metabolic derangements with insulin resistance (IR) being perhaps the most responsible for the development of T2D and other related diseases such as cardiovascular disease. The precarious nature of IR development is such that it provides a valuable target for the prevention of further disease development. However, the mechanisms driving IR are numerous and complex making the development of viable interventions difficult. The development of metabolic derangement in the context of obesity promotes accumulation of reactive metabolites such as the reactive alpha-dicarbonyl methylglyoxal (MG). MG accumulation has long been appreciated as a marker of disease progression in patients with T2D as well as the development of diabetic complications. However, recent evidence suggests that the accumulation of MG occurs with obesity prior to T2D onset and may be a primary driving factor for the development of IR and T2D. Further, emerging evidence also suggests that this accumulation of MG with obesity may be a result in a loss of MG detoxifying capacity of glyoxalase I. In this review, we will discuss the evidence that posits MG accumulation because of GLO1 attenuation is a novel target mechanism of the development of metabolic derangement. In addition, we will also explore the regulation of GLO1 and the strategies that have been investigated so far to target GLO1 regulation for the prevention and treatment of metabolic derangement.
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Affiliation(s)
- Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States of America; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States of America
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI, United States of America.
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12
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Portero-Otin M, de la Maza MP, Uribarri J. Dietary Advanced Glycation End Products: Their Role in the Insulin Resistance of Aging. Cells 2023; 12:1684. [PMID: 37443718 PMCID: PMC10340703 DOI: 10.3390/cells12131684] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Insulin resistance (IR) is commonly observed during aging and is at the root of many of the chronic nontransmissible diseases experienced as people grow older. Many factors may play a role in causing IR, but diet is undoubtedly an important one. Whether it is total caloric intake or specific components of the diet, the factors responsible remain to be confirmed. Of the many dietary influences that may play a role in aging-related decreased insulin sensitivity, advanced glycation end products (AGEs) appear particularly important. Herein, we have reviewed in detail in vitro, animal, and human evidence linking dietary AGEs contributing to the bodily burden of AGEs with the development of IR. We conclude that numerous small clinical trials assessing the effect of dietary AGE intake in combination with strong evidence in many animal studies strongly suggest that reducing dietary AGE intake is associated with improved IR in a variety of disease conditions. Reducing AGE content of common foods by simple changes in culinary techniques is a feasible, safe, and easily applicable intervention in both health and disease. Large-scale clinical trials are still needed to provide broader evidence for the deleterious role of dietary AGEs in chronic disease.
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Affiliation(s)
- Manuel Portero-Otin
- Departamento de Medicina Experimental, Facultad de Medicina, Universidad de Lleida, 25196 Lleida, Spain;
| | - M. Pia de la Maza
- Centro de Nutricion y Diabetes, Departamento de Medicina, Clinica Alemana, Universidad del Desarrollo, Santiago 7610658, Chile;
| | - Jaime Uribarri
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10021, USA
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13
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Khoshnejat M, Banaei-Moghaddam AM, Moosavi-Movahedi AA, Kavousi K. A holistic view of muscle metabolic reprogramming through personalized metabolic modeling in newly diagnosed diabetic patients. PLoS One 2023; 18:e0287325. [PMID: 37319295 PMCID: PMC10270629 DOI: 10.1371/journal.pone.0287325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/02/2023] [Indexed: 06/17/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a challenging and progressive metabolic disease caused by insulin resistance. Skeletal muscle is the major insulin-sensitive tissue that plays a pivotal role in blood sugar homeostasis. Dysfunction of muscle metabolism is implicated in the disturbance of glucose homeostasis, the development of insulin resistance, and T2DM. Understanding metabolism reprogramming in newly diagnosed patients provides opportunities for early diagnosis and treatment of T2DM as a challenging disease to manage. Here, we applied a system biology approach to investigate metabolic dysregulations associated with the early stage of T2DM. We first reconstructed a human muscle-specific metabolic model. The model was applied for personalized metabolic modeling and analyses in newly diagnosed patients. We found that several pathways and metabolites, mainly implicating in amino acids and lipids metabolisms, were dysregulated. Our results indicated the significance of perturbation of pathways implicated in building membrane and extracellular matrix (ECM). Dysfunctional metabolism in these pathways possibly interrupts the signaling process and develops insulin resistance. We also applied a machine learning method to predict potential metabolite markers of insulin resistance in skeletal muscle. 13 exchange metabolites were predicted as the potential markers. The efficiency of these markers in discriminating insulin-resistant muscle was successfully validated.
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Affiliation(s)
- Maryam Khoshnejat
- Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Ali Mohammad Banaei-Moghaddam
- The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- Laboratory of Genomics and Epigenomics (LGE), Department of Biochemistry, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Ali Akbar Moosavi-Movahedi
- The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Kaveh Kavousi
- Laboratory of Complex Biological Systems and Bioinformatics (CBB), Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- The UNESCO Chair on Interdisciplinary Research in Diabetes, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
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14
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Matthews JJ, Turner MD, Santos L, Elliott-Sale KJ, Sale C. Carnosine increases insulin-stimulated glucose uptake and reduces methylglyoxal-modified proteins in type-2 diabetic human skeletal muscle cells. Amino Acids 2023; 55:413-420. [PMID: 36637533 PMCID: PMC10038967 DOI: 10.1007/s00726-022-03230-9] [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: 12/02/2022] [Accepted: 12/18/2022] [Indexed: 01/14/2023]
Abstract
Type-2 diabetes (T2D) is characterised by a dysregulation of metabolism, including skeletal muscle insulin resistance, mitochondrial dysfunction, and oxidative stress. Reactive species, such as methylglyoxal (MGO) and 4-hydroxynonenal (4-HNE), positively associate with T2D disease severity and can directly interfere with insulin signalling and glucose uptake in skeletal muscle by modifying cellular proteins. The multifunctional dipeptide carnosine, and its rate-limiting precursor β-alanine, have recently been shown to improve glycaemic control in humans and rodents with diabetes. However, the precise mechanisms are unclear and research in human skeletal muscle is limited. Herein, we present novel findings in primary human T2D and lean healthy control (LHC) skeletal muscle cells. Cells were differentiated to myotubes, and treated with 10 mM carnosine, 10 mM β-alanine, or control for 4-days. T2D cells had reduced ATP-linked and maximal respiration compared with LHC cells (p = 0.016 and p = 0.005). Treatment with 10 mM carnosine significantly increased insulin-stimulated glucose uptake in T2D cells (p = 0.047); with no effect in LHC cells. Insulin-stimulation increased MGO-modified proteins in T2D cells by 47%; treatment with carnosine attenuated this increase to 9.7% (p = 0.011). There was no effect treatment on cell viability or expression of other proteins. These findings suggest that the beneficial effects of carnosine on glycaemic control may be explained by its scavenging actions in human skeletal muscle.
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Affiliation(s)
- Joseph J Matthews
- Sport, Health and Performance Research Centre, Musculoskeletal Physiology Research Group, School of Science and Technology, Nottingham Trent University, Nottingham, UK
- Department of Sport and Exercise, Centre for Life and Sport Sciences (CLaSS), Birmingham City University, Birmingham, UK
| | - Mark D Turner
- Centre for Diabetes, Chronic Diseases & Ageing, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Livia Santos
- Sport, Health and Performance Research Centre, Musculoskeletal Physiology Research Group, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Kirsty J Elliott-Sale
- Sport, Health and Performance Research Centre, Musculoskeletal Physiology Research Group, School of Science and Technology, Nottingham Trent University, Nottingham, UK
- Institute of Sport, Manchester Metropolitan University, Manchester, UK
| | - Craig Sale
- Sport, Health and Performance Research Centre, Musculoskeletal Physiology Research Group, School of Science and Technology, Nottingham Trent University, Nottingham, UK.
- Institute of Sport, Manchester Metropolitan University, Manchester, UK.
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15
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Dorenkamp M, Nasiry M, Semo D, Koch S, Löffler I, Wolf G, Reinecke H, Godfrey R. Pharmacological Targeting of the RAGE-NFκB Signalling Axis Impedes Monocyte Activation under Diabetic Conditions through the Repression of SHP-2 Tyrosine Phosphatase Function. Cells 2023; 12:cells12030513. [PMID: 36766855 PMCID: PMC9914555 DOI: 10.3390/cells12030513] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 02/09/2023] Open
Abstract
Monocytes play a vital role in the development of cardiovascular diseases. Type 2 diabetes mellitus (T2DM) is a major CVD risk factor, and T2DM-induced aberrant activation and enhanced migration of monocytes is a vital pathomechanism that leads to atherogenesis. We recently reported the upregulation of SHP-2 phosphatase expression in mediating the VEGF resistance of T2DM patient-derived monocytes or methylglyoxal- (MG, a glucose metabolite and advanced glycation end product (AGE) precursor) treated monocytes. However, the exact mechanisms leading to SHP-2 upregulation in hyperglycemic monocytes are unknown. Since inflammation and accumulation of AGEs is a hallmark of T2DM, we hypothesise that inflammation and AGE-RAGE (Receptor-for-AGEs) signalling drive SHP-2 expression in monocytes and blockade of these pathways will repress SHP-2 function. Indeed, monocytes from T2DM patients revealed an elevated SHP-2 expression. Under normoglycemic conditions, the serum from T2DM patients strongly induced SHP-2 expression, indicating that the T2DM serum contains critical factors that directly regulate SHP-2 expression. Activation of pro-inflammatory TNFα signalling cascade drove SHP-2 expression in monocytes. In line with this, linear regression analysis revealed a significant positive correlation between TNFα expression and SHP-2 transcript levels in T2DM monocytes. Monocytes exposed to MG or AGE mimetic AGE-BSA, revealed an elevated SHP-2 expression and co-treatment with an NFκB inhibitor or genetic inhibition of p65 reversed it. The pharmacological inhibition of RAGE was sufficient to block MG- or AGE-BSA-induced SHP-2 expression and activity. Confirming the importance of RAGE-NFκB signalling in regulating SHP-2 expression, the elevated binding of NFκB to the SHP-2 promoter-induced by MG or AGE-BSA-was reversed by RAGE and NFκB inhibition. Besides, we detected elevated RAGE levels in human and murine T2DM monocytes and monocytes exposed to MG or AGE-BSA. Importantly, MG and AGE-BSA treatment of non-T2DM monocytes phenocopied the aberrant pro-migratory phenotype of T2DM monocytes, which was reversed entirely by either SHP-2- or RAGE inhibition. In conclusion, these findings suggest a new therapeutic approach to prevent accelerated atherosclerosis in T2DM patients since inhibiting the RAGE-NFκB-SHP-2 axis impeded the T2DM-driven, SHP-2-dependent monocyte activation.
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Affiliation(s)
- Marc Dorenkamp
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
| | - Madina Nasiry
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
| | - Dilvin Semo
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
| | - Sybille Koch
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
| | - Ivonne Löffler
- Department of Internal Medicine III, University Hospital Jena, 07743 Jena, Germany
| | - Gunter Wolf
- Department of Internal Medicine III, University Hospital Jena, 07743 Jena, Germany
| | - Holger Reinecke
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
| | - Rinesh Godfrey
- Vascular Signalling, Molecular Cardiology, Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, 48149 Münster, Germany
- Correspondence: ; Tel.: +49-251-83-57089; Fax: +49-251-83-55747
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16
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Lai SWT, Lopez Gonzalez EDJ, Zoukari T, Ki P, Shuck SC. Methylglyoxal and Its Adducts: Induction, Repair, and Association with Disease. Chem Res Toxicol 2022; 35:1720-1746. [PMID: 36197742 PMCID: PMC9580021 DOI: 10.1021/acs.chemrestox.2c00160] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Metabolism is an essential part of life that provides energy for cell growth. During metabolic flux, reactive electrophiles are produced that covalently modify macromolecules, leading to detrimental cellular effects. Methylglyoxal (MG) is an abundant electrophile formed from lipid, protein, and glucose metabolism at intracellular levels of 1-4 μM. MG covalently modifies DNA, RNA, and protein, forming advanced glycation end products (MG-AGEs). MG and MG-AGEs are associated with the onset and progression of many pathologies including diabetes, cancer, and liver and kidney disease. Regulating MG and MG-AGEs is a potential strategy to prevent disease, and they may also have utility as biomarkers to predict disease risk, onset, and progression. Here, we review recent advances and knowledge surrounding MG, including its production and elimination, mechanisms of MG-AGEs formation, the physiological impact of MG and MG-AGEs in disease onset and progression, and the latter in the context of its receptor RAGE. We also discuss methods for measuring MG and MG-AGEs and their clinical application as prognostic biomarkers to allow for early detection and intervention prior to disease onset. Finally, we consider relevant clinical applications and current therapeutic strategies aimed at targeting MG, MG-AGEs, and RAGE to ultimately improve patient outcomes.
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Affiliation(s)
- Seigmund Wai Tsuen Lai
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
| | - Edwin De Jesus Lopez Gonzalez
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
| | - Tala Zoukari
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
| | - Priscilla Ki
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
| | - Sarah C Shuck
- Department of Diabetes and Cancer Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, City of Hope Comprehensive Cancer Center, Duarte, California 91010, United States
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17
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Advanced Glycation End Products (AGEs) and Chronic Kidney Disease: Does the Modern Diet AGE the Kidney? Nutrients 2022; 14:nu14132675. [PMID: 35807857 PMCID: PMC9268915 DOI: 10.3390/nu14132675] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 12/13/2022] Open
Abstract
Since the 1980s, chronic kidney disease (CKD) affecting all ages has increased by almost 25%. This increase may be partially attributable to lifestyle changes and increased global consumption of a “western” diet, which is typically energy dense, low in fruits and vegetables, and high in animal protein and ultra-processed foods. These modern food trends have led to an increase in the consumption of advanced glycation end products (AGEs) in conjunction with increased metabolic dysfunction, obesity and diabetes, which facilitates production of endogenous AGEs within the body. When in excess, AGEs can be pathological via both receptor-mediated and non-receptor-mediated pathways. The kidney, as a major site for AGE clearance, is particularly vulnerable to AGE-mediated damage and increases in circulating AGEs align with risk of CKD and all-cause mortality. Furthermore, individuals with significant loss of renal function show increased AGE burden, particularly with uraemia, and there is some evidence that AGE lowering via diet or pharmacological inhibition may be beneficial for CKD. This review discusses the pathways that drive AGE formation and regulation within the body. This includes AGE receptor interactions and pathways of AGE-mediated pathology with a focus on the contribution of diet on endogenous AGE production and dietary AGE consumption to these processes. We then analyse the contribution of AGEs to kidney disease, the evidence for dietary AGEs and endogenously produced AGEs in driving pathogenesis in diabetic and non-diabetic kidney disease and the potential for AGE targeted therapies in kidney disease.
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18
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Glycation of Tie-2 Inhibits Angiopoietin-1 Signaling Activation and Angiopoietin-1-Induced Angiogenesis. Int J Mol Sci 2022; 23:ijms23137137. [PMID: 35806141 PMCID: PMC9266685 DOI: 10.3390/ijms23137137] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 02/04/2023] Open
Abstract
The impairment of the angiopoietin-1 (Ang-1)/Tie-2 signaling pathway has been thought to play a critical role in diabetic complications. However, the underlying mechanisms remain unclear. The present study aims to investigate the effects of Tie-2 glycation on Ang-1 signaling activation and Ang-1-induced angiogenesis. We identified that Tie-2 was modified by advanced glycation end products (AGEs) in aortae derived from high fat diet (HFD)-fed mice and in methylglyoxal (MGO)-treated human umbilical vein endothelial cells (HUVECs). MGO-induced Tie-2 glycation significantly inhibited Ang-1-evoked Tie-2 and Akt phosphorylation and Ang-1-regulated endothelial cell migration and tube formation, whereas the blockade of AGE formation by aminoguanidine remarkably rescued Ang-1 signaling activation and Ang-1-induced angiogenesis in vitro. Furthermore, MGO treatment markedly increased AGE cross-linking of Tie-2 in cultured aortae ex vivo and MGO-induced Tie-2 glycation also significantly decreased Ang-1-induced vessel outgrow from aortic rings. Collectively, these data suggest that Tie-2 may be modified by AGEs in diabetes mellitus and that Tie-2 glycation inhibits Ang-1 signaling activation and Ang-1-induced angiogenesis. This may provide a novel mechanism for Ang-1/Tie-2 signal dysfunction and angiogenesis failure in diabetic ischaemic diseases.
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19
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Alhujaily M, Mir MM, Mir R, Alghamdi MAA, Wani JI, Sabah ZU, Elfaki I, Alnour TMS, Jeelani M, Abomughaid MM, Alharbi SA. Clinical Implications of Glyoxalase1 Gene Polymorphism and Elevated Levels of the Reactive Metabolite Methylglyoxal in the Susceptibility of Type 2 Diabetes Mellitus in the Patients from Asir and Tabuk Regions of Saudi Arabia. J Pers Med 2022; 12:jpm12040639. [PMID: 35455754 PMCID: PMC9030104 DOI: 10.3390/jpm12040639] [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: 01/29/2022] [Revised: 03/07/2022] [Accepted: 04/08/2022] [Indexed: 12/04/2022] Open
Abstract
Diabetes mellitus constitutes a big challenge to the global health care system due to its socioeconomic impacts and very serious complications. The incidence and the prevalence rate are increased in the Gulf region including the KSA. Type 2 diabetes mellitus (T2DM) is caused by diverse risk factors including obesity, unhealthy dietary habits, physical inactivity, smoking and genetic factors. The molecular genetic studies have helped in the detection of many single nucleotide polymorphisms (SNP) with different diseases including cancers, cardiovascular diseases and T2DM. The glyoxalase 1 (GLO1) is a detoxifying enzyme and catalyzes the elimination of the cytotoxic product methylglyoxal (MG) by converting it to D-lactate, which is not toxic to tissues. MG accumulation is associated with the pathogenesis of different diseases including T2DM. In this study, we have investigated the association of the glyoxalase 1 SNPs (rs2736654) rs4746 C>A and rs1130534 T>A with T2DM using the amplification refractory mutation system PCR. We also measured the concentration of MG by ELISA in T2DM patients and matched heathy controls. Results show that the CA genotype of the GLO rs4647 A>C was associated with T2DM with OR = 2.57, p-value 0.0008 and the C allele was also associated with increased risk to T2DM with OR = 2.24, p-value = 0.0001. It was also observed that AT genotype of the rs1130534 was associated with decreased susceptibility to T2DM with OR = 0.3, p-value = 0.02. The A allele of rs1130534 was also associated with reduced risk to T2DM with PR = 0.27 = 0.006. In addition, our ELISA results demonstrate significantly increased MG concentrations in serum of the T2DM patients. We conclude that the GLO1 SNP may be associated with decreased enzyme activity and a resultant susceptibility to T2DM. Further well-designed studies in different and large patient populations are recommended to verify these findings.
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Affiliation(s)
- Muhanad Alhujaily
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia; (M.A.); (M.M.A.)
| | - Mohammad Muzaffar Mir
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia;
- Correspondence:
| | - Rashid Mir
- Prince Fahd Bin Sultan Research Chair, Department of MLT, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia; (R.M.); (T.M.S.A.)
| | | | - Javed Iqbal Wani
- Department of Internal Medicine, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia; (J.I.W.); (Z.u.S.)
| | - Zia ul Sabah
- Department of Internal Medicine, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia; (J.I.W.); (Z.u.S.)
| | - Imadeldin Elfaki
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia;
| | - Tarig Mohammad Saad Alnour
- Prince Fahd Bin Sultan Research Chair, Department of MLT, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk 71491, Saudi Arabia; (R.M.); (T.M.S.A.)
| | - Mohammed Jeelani
- Department of Basic Medical Sciences, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia;
| | - Mosleh Mohammad Abomughaid
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha 61922, Saudi Arabia; (M.A.); (M.M.A.)
| | - Samir Abdulkarim Alharbi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Shaqra 11961, Saudi Arabia;
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20
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Todoriki S, Hosoda Y, Yamamoto T, Watanabe M, Sekimoto A, Sato H, Mori T, Miyazaki M, Takahashi N, Sato E. Methylglyoxal Induces Inflammation, Metabolic Modulation and Oxidative Stress in Myoblast Cells. Toxins (Basel) 2022; 14:toxins14040263. [PMID: 35448872 PMCID: PMC9030564 DOI: 10.3390/toxins14040263] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/02/2022] [Accepted: 04/04/2022] [Indexed: 11/16/2022] Open
Abstract
Uremic sarcopenia is a serious clinical problem associated with physical disability and increased morbidity and mortality. Methylglyoxal (MG) is a highly reactive, dicarbonyl uremic toxin that accumulates in the circulatory system in patients with chronic kidney disease (CKD) and is related to the pathology of uremic sarcopenia. The pathophysiology of uremic sarcopenia is multifactorial; however, the details remain unknown. We investigated the mechanisms of MG-induced muscle atrophy using mouse myoblast C2C12 cells, focusing on intracellular metabolism and mitochondrial injury. We found that one of the causative pathological mechanisms of uremic sarcopenia is metabolic flow change to fatty acid synthesis with MG-induced ATP shortage in myoblasts. Evaluation of cell viability revealed that MG showed toxic effects only in myoblast cells, but not in myotube cells. Expression of mRNA or protein analysis revealed that MG induces muscle atrophy, inflammation, fibrosis, and oxidative stress in myoblast cells. Target metabolomics revealed that MG induces metabolic alterations, such as a reduction in tricarboxylic acid cycle metabolites. In addition, MG induces mitochondrial morphological abnormalities in myoblasts. These changes resulted in the reduction of ATP derived from the mitochondria of myoblast cells. Our results indicate that MG is a pathogenic factor in sarcopenia in CKD.
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Affiliation(s)
- Sota Todoriki
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
| | - Yui Hosoda
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
| | - Tae Yamamoto
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
| | - Mayu Watanabe
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
| | - Akiyo Sekimoto
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
| | - Hiroshi Sato
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
| | - Takefumi Mori
- Division of Nephrology and Endocrinology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai 983-8512, Japan;
| | - Mariko Miyazaki
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
| | - Nobuyuki Takahashi
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
| | - Emiko Sato
- Division of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai 980-8578, Japan; (S.T.); (Y.H.); (M.W.); (A.S.); (H.S.); (N.T.)
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8574, Japan; (T.Y.); (M.M.)
- Correspondence: ; Tel.: +81-22-795-6807
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21
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Early postnatal exposure of rat pups to methylglyoxal induces oxidative stress, inflammation and dysmetabolism at adulthood. J Dev Orig Health Dis 2022; 13:617-625. [DOI: 10.1017/s204017442100074x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
This work aimed to investigate the effects of early progeny exposure to methylglyoxal (MG), programming for metabolic dysfunction and diabetes-like complications later in life. At delivery (PN1), the animals were separated into two groups: control group (CO), treated with saline, and MG group, treated with MG (20 mg/kg of BW; i.p.) during the first 2 weeks of the lactation period. In vivo experiments and tissue collection were done at PN90. Early MG exposure decreased body weight, adipose tissue, liver and kidney weight at adulthood. On the other hand, MG group showed increased relative food intake, blood fructosamine, blood insulin and HOMA-IR, which is correlated with insulin resistance. Besides, MG-treated animals presented dyslipidaemia, increased oxidative stress and inflammation. Likewise, MG group showed steatosis and perivascular fibrosis in the liver, pancreatic islet hypertrophy, increased glomerular area and pericapsular fibrosis, but reduced capsular space. This study shows that early postnatal exposure to MG induces oxidative stress, inflammation and fibrosis markers in pancreas, liver and kidney, which are related to metabolic dysfunction features. Thus, nutritional disruptors during lactation period may be an important risk factor for metabolic alterations at adulthood.
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22
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Egawa T, Ogawa T, Yokokawa T, Kido K, Goto K, Hayashi T. Methylglyoxal reduces molecular responsiveness to 4 weeks of endurance exercise in mouse plantaris muscle. J Appl Physiol (1985) 2022; 132:477-488. [PMID: 35023763 DOI: 10.1152/japplphysiol.00539.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Endurance exercise triggers skeletal muscle adaptations, including enhanced insulin signaling, glucose metabolism, and mitochondrial biogenesis. However, exercise-induced skeletal muscle adaptations may not occur in some cases, a condition known as exercise-resistance. Methylglyoxal (MG) is a highly reactive dicarbonyl metabolite and has detrimental effects on the body such as causing diabetic complications, mitochondrial dysfunction, and inflammation. This study aimed to clarify the effect of methylglyoxal on skeletal muscle molecular adaptations following endurance exercise. Mice were randomly divided into 4 groups (n = 12 per group): sedentary control group, voluntary exercise group, MG-treated group, and MG-treated with voluntary exercise group. Mice in the voluntary exercise group were housed in a cage with a running wheel, while mice in the MG-treated groups received drinking water containing 1% MG. Four weeks of voluntary exercise induced several molecular adaptations in the plantaris muscle, including increased expression of peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC1α), mitochondria complex proteins, toll-like receptor 4 (TLR4), 72-kDa heat shock protein (HSP72), hexokinase II, and glyoxalase 1; this also enhanced insulin-stimulated Akt Ser473 phosphorylation and citrate synthase activity. However, these adaptations were suppressed with MG treatment. In the soleus muscle, the exercise-induced increases in the expression of TLR4, HSP72, and advanced glycation end products receptor 1 were inhibited with MG treatment. These findings suggest that MG is a factor that inhibits endurance exercise-induced molecular responses including mitochondrial adaptations, insulin signaling activation, and the upregulation of several proteins related to mitochondrial biogenesis, glucose handling, and glycation in primarily fast-twitch skeletal muscle.
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Affiliation(s)
- Tatsuro Egawa
- Laboratory of Health and Exercise Sciences, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - Takeshi Ogawa
- Laboratory of Sports and Exercise Medicine, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
| | - Takumi Yokokawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Kohei Kido
- Faculty of Sports and Health Science, Fukuoka University, Fukuoka, Japan.,Institute for Physical Activity, Fukuoka University, Fukuoka, Japan
| | - Katsumasa Goto
- Laboratory of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Aichi, Japan
| | - Tatsuya Hayashi
- Laboratory of Sports and Exercise Medicine, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
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23
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Dang Y, Lai Y, Chen F, Sun Q, Ding C, Zhang W, Xu Z. Activatable NIR-II Fluorescent Nanoprobe for Rapid Detection and Imaging of Methylglyoxal Facilitated by the Local Nonpolar Microenvironment. Anal Chem 2022; 94:1076-1084. [DOI: 10.1021/acs.analchem.1c04076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yijing Dang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Yi Lai
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Fengping Chen
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Qian Sun
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Chunyong Ding
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wen Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Zhiai Xu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
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24
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Cortizo FG, Pfaff D, Wirth A, Schlotterer A, Medert R, Morgenstern J, Weber T, Hammes HP, Fleming T, Nawroth PP, Freichel M, Teleman AA. The activity of glyoxylase 1 is regulated by glucose-responsive phosphorylation on Tyr136. Mol Metab 2022; 55:101406. [PMID: 34838714 PMCID: PMC8715127 DOI: 10.1016/j.molmet.2021.101406] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Methylglyoxal (MG) is a highly reactive α-oxoaldehyde that glycates proteins. MG has been linked to the development of diabetic complications: MG is the major precursor of advanced glycation end products (AGEs), a risk marker for diabetic complications in humans. Furthermore, flies and fish with elevated MG develop insulin resistance, obesity, and hyperglycemia. MG is detoxified in large part through the glyoxalase system, whose rate-limiting enzyme is glyoxalase I (Glo1). Hence, we aimed to study how Glo1 activity is regulated. METHODS We studied the regulation and effect of post-translational modifications of Glo1 in tissue culture and in mouse models of diabetes. RESULTS We show that Glo1 activity is promoted by phosphorylation on Tyrosine 136 via multiple kinases. We find that Glo1 Y136 phosphorylation responds in a bimodal fashion to glucose levels, increasing in cell culture from 0 mM to 5 mM (physiological) glucose, and then decreasing at higher glucose concentrations, both in cell culture and in mouse models of hyperglycemia. CONCLUSIONS These data, together with published findings that elevated MG leads to hyperglycemia, suggest the existence of a deleterious positive feedback loop whereby hyperglycemia leads to reduced Glo1 activity, contributing to elevated MG levels, which in turn promote hyperglycemia. Hence, perturbations elevating either glucose or MG have the potential to start an auto-amplifying feedback loop contributing to diabetic complications.
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Affiliation(s)
- Fabiola Garcia Cortizo
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany; Heidelberg University, 69120, Heidelberg, Germany
| | - Daniel Pfaff
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany; Department of Internal Medicine I and Clinical Chemistry, University Hospital Heidelberg, Germany
| | - Angela Wirth
- Pharmakologisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
| | - Andrea Schlotterer
- 5th Medical Department, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany
| | - Rebekka Medert
- Pharmakologisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
| | - Jakob Morgenstern
- Department of Internal Medicine I and Clinical Chemistry, University Hospital Heidelberg, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Tobias Weber
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany; Heidelberg University, 69120, Heidelberg, Germany
| | - Hans-Peter Hammes
- 5th Medical Department, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany
| | - Thomas Fleming
- Department of Internal Medicine I and Clinical Chemistry, University Hospital Heidelberg, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Peter Paul Nawroth
- Department of Internal Medicine I and Clinical Chemistry, University Hospital Heidelberg, Germany
| | - Marc Freichel
- Pharmakologisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120, Heidelberg, Germany
| | - Aurelio A Teleman
- German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany; Heidelberg University, 69120, Heidelberg, Germany.
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25
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Donnellan L, Simpson BS, Dhillon VS, Costabile M, Fenech M, Deo P. OUP accepted manuscript. Mutagenesis 2022; 37:24-33. [PMID: 35079805 PMCID: PMC9186029 DOI: 10.1093/mutage/geac003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
Type 2 diabetes (T2D) is associated with elevated frequencies of micronuclei (MNi) and other DNA damage biomarkers. Interestingly, individuals with T2D are more likely to be deficient in micronutrients (folic acid, pyridoxal-phosphate, cobalamin) that play key roles in one-carbon metabolism and maintaining genomic integrity. Furthermore, it has recently been shown that deficiencies in these nutrients, in particular folic acid leaves cells susceptible to glucose-induced DNA damage. Therefore, we sought to investigate if the B lymphoblastoid WIL2-NS cell line cultured under folic acid-deficient conditions was more sensitive to DNA damage induced by glucose, or the reactive glycolytic byproduct methylglyoxal (MGO) and subsequent advanced glycation endproduct formation. Here, we show that only WIL2-NS cultured under folic acid-deficient conditions (23 nmol/l) experience an increase in MNi frequency when exposed to high concentrations of glucose (45 mmol/l) or MGO (100 µmol/l). Furthermore, we showed aminoguanidine, a well-validated MGO and free radical scavenger was able to prevent further MNi formation in folic acid-deficient cells exposed to high glucose, which may be due to a reduction in MGO-induced oxidative stress. Interestingly, we also observed an increase in MGO and other dicarbonyl stress biomarkers in folic acid-deficient cells, irrespective of glucose concentrations. Overall, our evidence shows that folic acid-deficient WIL2-NS cells are more susceptible to glucose and/or MGO-induced MNi formation. These results suggest that individuals with T2D experiencing hyperglycemia and folic acid deficiency may be at higher risk of chromosomal instability.
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Affiliation(s)
- Leigh Donnellan
- University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia
| | - Bradley S Simpson
- University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia
| | - Varinderpal S Dhillon
- University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia
| | - Maurizio Costabile
- University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia
- University of South Australia, Centre for Cancer Biology and SA Pathology, Frome Road, Adelaide, SA 5000, Australia
| | - Michael Fenech
- University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia
- Genome Health Foundation, North Brighton, SA 5048, Australia
| | - Permal Deo
- Corresponding author. University of South Australia, Clinical and Health Sciences, Health and Biomedical Innovation, Adelaide, SA 5000, Australia. E-mail:
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26
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Ertuglu LA, Elijovich F, Laffer CL, Kirabo A. Salt-Sensitivity of Blood Pressure and Insulin Resistance. Front Physiol 2021; 12:793924. [PMID: 34966295 PMCID: PMC8711096 DOI: 10.3389/fphys.2021.793924] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/18/2021] [Indexed: 12/20/2022] Open
Abstract
Salt sensitivity of blood pressure (SSBP) is an independent risk factor for cardiovascular morbidity and mortality that is seen in both hypertensive and normotensive populations. Insulin resistance (IR) strongly correlates with SSBP and affects nearly 50% of salt sensitive people. While the precise mechanism by which IR and SSBP relate remains elusive, several common pathways are involved in the genesis of both processes, including vascular dysfunction and immune activation. Vascular dysfunction associated with insulin resistance is characterized by loss of nitric oxide (NO)-mediated vasodilation and heightened endothelin-1 induced vasoconstriction, as well as capillary rarefaction. It manifests with increased blood pressure (BP) in salt sensitive murine models. Another common denominator in the pathogenesis of insulin resistance, hypertension, and salt sensitivity (SS) is immune activation involving pro-inflammatory cytokines like tumor necrosis factor (TNF)-α, IL-1β, and IL-6. In the last decade, a new understanding of interstitial sodium storage in tissues such as skin and muscle has revolutionized traditional concepts of body sodium handling and pathogenesis of SS. We have shown that interstitial Na+ can trigger a T cell mediated inflammatory response through formation of isolevuglandin protein adducts in antigen presenting cells (APCs), and that this response is implicated in salt sensitive hypertension. The peroxisome proliferator-activated receptor γ (PPARγ) is a transcription factor that modulates both insulin sensitivity and BP. PPARγ agonists increase insulin sensitivity and ameliorate salt sensitivity, whereas deficiency of PPARγ results in severe insulin resistance and hypertension. These findings suggest that PPARγ plays a role in the common pathogenesis of insulin sensitivity and salt sensitivity, perhaps via effects on the immune system and vascular function. The goal of this review is to discuss those mechanisms that may play a role in both SSBP and in insulin resistance.
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Affiliation(s)
- Lale A Ertuglu
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Fernando Elijovich
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Cheryl L Laffer
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Annet Kirabo
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
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27
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Pignalosa FC, Desiderio A, Mirra P, Nigro C, Perruolo G, Ulianich L, Formisano P, Beguinot F, Miele C, Napoli R, Fiory F. Diabetes and Cognitive Impairment: A Role for Glucotoxicity and Dopaminergic Dysfunction. Int J Mol Sci 2021; 22:ijms222212366. [PMID: 34830246 PMCID: PMC8619146 DOI: 10.3390/ijms222212366] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/09/2021] [Accepted: 11/13/2021] [Indexed: 12/13/2022] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder characterized by hyperglycemia, responsible for the onset of several long-term complications. Recent evidence suggests that cognitive dysfunction represents an emerging complication of DM, but the underlying molecular mechanisms are still obscure. Dopamine (DA), a neurotransmitter essentially known for its relevance in the regulation of behavior and movement, modulates cognitive function, too. Interestingly, alterations of the dopaminergic system have been observed in DM. This review aims to offer a comprehensive overview of the most relevant experimental results assessing DA’s role in cognitive function, highlighting the presence of dopaminergic dysfunction in DM and supporting a role for glucotoxicity in DM-associated dopaminergic dysfunction and cognitive impairment. Several studies confirm a role for DA in cognition both in animal models and in humans. Similarly, significant alterations of the dopaminergic system have been observed in animal models of experimental diabetes and in diabetic patients, too. Evidence is accumulating that advanced glycation end products (AGEs) and their precursor methylglyoxal (MGO) are associated with cognitive impairment and alterations of the dopaminergic system. Further research is needed to clarify the molecular mechanisms linking DM-associated dopaminergic dysfunction and cognitive impairment and to assess the deleterious impact of glucotoxicity.
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Affiliation(s)
- Francesca Chiara Pignalosa
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Antonella Desiderio
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Paola Mirra
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Cecilia Nigro
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Giuseppe Perruolo
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Luca Ulianich
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Pietro Formisano
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Francesco Beguinot
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
| | - Claudia Miele
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
- Correspondence: ; Tel.: +39-081-746-3248
| | - Raffaele Napoli
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
| | - Francesca Fiory
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, Italy; (F.C.P.); (A.D.); (P.M.); (C.N.); (G.P.); (L.U.); (P.F.); (F.B.); (R.N.); (F.F.)
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology, National Research Council, 80131 Naples, Italy
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28
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Qi H, Schmöhl F, Li X, Qian X, Tabler CT, Bennewitz K, Sticht C, Morgenstern J, Fleming T, Volk N, Hausser I, Heidenreich E, Hell R, Nawroth PP, Kroll J. Reduced Acrolein Detoxification in akr1a1a Zebrafish Mutants Causes Impaired Insulin Receptor Signaling and Microvascular Alterations. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101281. [PMID: 34278746 PMCID: PMC8456208 DOI: 10.1002/advs.202101281] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/01/2021] [Indexed: 05/03/2023]
Abstract
Increased acrolein (ACR), a toxic metabolite derived from energy consumption, is associated with diabetes and its complications. However, the molecular mechanisms are mostly unknown, and a suitable animal model with internal increased ACR does not exist for in vivo studying so far. Several enzyme systems are responsible for acrolein detoxification, such as Aldehyde Dehydrogenase (ALDH), Aldo-Keto Reductase (AKR), and Glutathione S-Transferase (GST). To evaluate the function of ACR in glucose homeostasis and diabetes, akr1a1a-/- zebrafish mutants are generated using CRISPR/Cas9 technology. Accumulated endogenous acrolein is confirmed in akr1a1a-/- larvae and livers of adults. Moreover, a series of experiments are performed regarding organic alterations, the glucose homeostasis, transcriptome, and metabolomics in Tg(fli1:EGFP) zebrafish. Akr1a1a-/- larvae display impaired glucose homeostasis and angiogenic retina hyaloid vasculature, which are caused by reduced acrolein detoxification ability and increased internal ACR concentration. The effects of acrolein on hyaloid vasculature can be reversed by acrolein-scavenger l-carnosine treatment. In adult akr1a1a-/- mutants, impaired glucose tolerance accompanied by angiogenic retina vessels and glomerular basement membrane thickening, consistent with an early pathological appearance in diabetic retinopathy and nephropathy, are observed. Thus, the data strongly suggest impaired ACR detoxification and elevated ACR concentration as biomarkers and inducers for diabetes and diabetic complications.
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Affiliation(s)
- Haozhe Qi
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
- Department of Vascular SurgeryRenji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai200127China
| | - Felix Schmöhl
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Xiaogang Li
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Xin Qian
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Christoph T. Tabler
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Katrin Bennewitz
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Carsten Sticht
- NGS Core FacilityMedical Faculty MannheimHeidelberg UniversityMannheim68167Germany
| | - Jakob Morgenstern
- Department of Internal Medicine I and Clinical ChemistryHeidelberg University HospitalHeidelberg69120Germany
- German Center for Diabetes Research (DZD)Neuherberg85764Germany
| | - Thomas Fleming
- Department of Internal Medicine I and Clinical ChemistryHeidelberg University HospitalHeidelberg69120Germany
- German Center for Diabetes Research (DZD)Neuherberg85764Germany
| | - Nadine Volk
- Tissue Bank of the National Center for Tumor Diseases (NCT) HeidelbergHeidelberg UniversityHeidelberg69120Germany
| | - Ingrid Hausser
- Institute of Pathology IPHEM LabHeidelberg University HospitalHeidelberg69120Germany
| | - Elena Heidenreich
- Metabolomics Core Technology PlatformCentre for Organismal StudiesHeidelberg UniversityHeidelberg69120Germany
| | - Rüdiger Hell
- Metabolomics Core Technology PlatformCentre for Organismal StudiesHeidelberg UniversityHeidelberg69120Germany
| | - Peter Paul Nawroth
- Department of Internal Medicine I and Clinical ChemistryHeidelberg University HospitalHeidelberg69120Germany
- German Center for Diabetes Research (DZD)Neuherberg85764Germany
- Joint Heidelberg‐IDC Translational Diabetes ProgramHelmholtz‐ZentrumNeuherberg85764Germany
| | - Jens Kroll
- Department of Vascular Biology and Tumor AngiogenesisEuropean Center for Angioscience (ECAS)Medical Faculty MannheimHeidelberg UniversityMannheim68167Germany
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29
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Distinct Impact of Natural Sugars from Fruit Juices and Added Sugars on Caloric Intake, Body Weight, Glycaemia, Oxidative Stress and Glycation in Diabetic Rats. Nutrients 2021; 13:nu13092956. [PMID: 34578832 PMCID: PMC8468124 DOI: 10.3390/nu13092956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 11/17/2022] Open
Abstract
Although fruit juices are a natural source of sugars, there is a controversy whether their sugar content has similar harmful effects as beverages’ added-sugars. We aimed to study the role of fruit juice sugars in inducing overweight, hyperglycaemia, glycation and oxidative stress in normal and diabetic animal models. In diabetic Goto-Kakizaki (GK) rats, we compared the effects of four different fruit juices (4-weeks) with sugary solutions having a similar sugar profile and concentration. In vitro, the sugary solutions were more susceptible to AGE formation than fruit juices, also causing higher postprandial glycaemia and lower erythrocytes’ antioxidant capacity in vivo (single intake). In GK rats, ad libitum fruit juice consumption (4-weeks) did not change body weight, glycaemia, oxidative stress nor glycation. Consumption of a matched volume of sugary solutions aggravated fasting glycaemia but had a moderate impact on caloric intake and oxidative stress/glycation markers in tissues of diabetic rats. Ad libitum availability of the same sugary solutions impaired energy balance regulation, leading to higher caloric intake than ad libitum fruit juices and controls, as well as weight gain, fasting hyperglycaemia, insulin intolerance and impaired oxidative stress/glycation markers in several tissues. We demonstrated the distinct role of sugars naturally present in fruit juices and added sugars in energy balance regulation, impairing oxidative stress, glycation and glucose metabolism in an animal model of type 2 diabetes.
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Darvishi B, Dinarvand R, Mohammadpour H, Kamarul T, Sharifi AM. Dual l-Carnosine/ Aloe vera Nanophytosomes with Synergistically Enhanced Protective Effects against Methylglyoxal-Induced Angiogenesis Impairment. Mol Pharm 2021; 18:3302-3325. [PMID: 34297586 DOI: 10.1021/acs.molpharmaceut.1c00248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microvascular complications are among the major outcomes of patients with type II diabetes mellitus, which are the consequences of impaired physiological functioning of small blood vessels and angiogenic responses in these patients. Overproduction and accumulation of methylglyoxal (MGO), a highly reactive dicarbonyl byproduct of glycolysis pathway, has been acclaimed as the main inducer of impaired angiogenic responses and microvascular dysfunction in diabetic patients with uncontrolled hyperglycemia. Hence, an effective approach to overcome diabetes-associated microvascular complications is to neutralize the deleterious activity of enhanced the concentration of MGO in the body. Owing to the glycation inhibitory activity of Aloe vera whole extract, and capability of l-carnosine, an endogenous dipeptide, in attenuating MGO's destructive activity, we examined whether application of a combination of l-carnosine and A. vera could be an effective way of synergistically weakening this reactive dicarbonyl's impaired angiogenic effects. Additionally, overcoming the poor cellular uptake and internalization of l-carnosine and A. vera, a nanophytosomal formulation of the physical mixture of two compounds was also established. Although l-carnosine and A. vera at whole studied combination ratios could synergistically enhance viability of human umbilical vein endothelial cells (HUVECs) treated with MGO, the 25:1 w/w ratio was the most effective one among the others (27 ± 0.5% compared to 12 ± 0.3 to 18 ± 0.4%; F (4, 15) = 183.9, P < 0.0001). Developing dual nanophytosomes of l-carnosine/A. vera (25:1) combination ratio, we demonstrated superiority of the nanophytosomal formulation in protecting HUVECs against MGO-induced toxicity following a 24-72 h incubation period (17.3, 15.8, and 12.4% respectively). Moreover, 500 μg/mL concentration of dual l-carnosine/A. vera nanophytosomes exhibited a superior free radical scavenging potency (63 ± 4 RFU vs 83 ± 5 RFU; F (5, 12) = 54.81, P < 0.0001) and nitric oxide synthesizing capacity (26.11 ± 0.19 vs 5.1 ± 0.33; F (5, 12) = 2537, P < 0.0001) compared to their physical combination counterpart. Similarly, 500 μg/mL dual l-carnosine/A. vera nanophytosome-treated HUVECs demonstrated a superior tube formation capacity (15 ± 3 vs 2 ± 0.3; F (5, 12) = 30.87, P < 0.001), wound scratch healing capability (4.92 ± 0.3 vs 3.07 ± 0.3 mm/h; F (5, 12) = 39.21, P < 0.0001), and transwell migration (586 ± 32 vs 394 ± 18; F (5, 12) = 231.8, P < 0.001) and invasion (172 ± 9 vs 115 ± 5; F (5, 12) = 581.1, P < 0.0001) activities compared to the physical combination treated ones. Further confirming the proangiogenic activity of the dual l-carnosine/A. vera nanophytosomes, a significant shift toward expression of proangiogenic genes including HIF-1α, VEGFA, bFGF, KDR, and Ang II was reported in treated HUVECs. Overall, dual l-carnosine/A. vera nanophytosomes could be a potential candidate for attenuating type II DM-associated microvascular complications with an impaired angiogenesis background.
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Affiliation(s)
- Behrad Darvishi
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Razi Drug Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Rassoul Dinarvand
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14155-6451, Iran.,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 13169-43551, Iran
| | - Hadiseh Mohammadpour
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran 14155-5583, Iran
| | - Tunku Kamarul
- Tissue Engineering Group, (NOCERAL), Department of Orthopedic Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ali Mohammad Sharifi
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Razi Drug Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Tissue Engineering Group, (NOCERAL), Department of Orthopedic Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Stem cell and Regenerative Medicine research center, Iran University of Medical Sciences, Tehran 1449614535, Iran
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Protective effects of Quercetin and Resveratrol on aging markers in kidney under high glucose condition: in vivo and in vitro analysis. Mol Biol Rep 2021; 48:5435-5442. [PMID: 34273031 DOI: 10.1007/s11033-021-06550-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 07/08/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Resveratrol and Quercetin as powerful herbal antioxidant reduce kidney complications of diabetes. The purpose of this study was to evaluate the protective effects of Quercetin and Resveratrol on aging markers in high glucose condition. METHODS AND RESULTS In this study, HEK-293 cells and kidney tissue of male Wistar rats were used in hyperglycemia condition. Quercetin and Resveratrol for cell culture and in vivo evaluation were used. Amount of methylglyoxal and the gene and protein expression of the Senescence Marker Protein30 (SMP30) were measured using qRT-PCR and ELISA, respectively. High glucose condition in kidney cell and tissue caused increase in glyoxal amount compared to control sample. Treatment with Resveratrol and/or Quercetin significantly decreased the amount of methylglyoxal in a dose-dependent manner. SMP30 expression significantly decreased compare to control group while treatment with Resveratrol and/or Quercetin considerably increased expression level of the protein. Six weeks treatment with Quercetin and Resveratrol had more beneficial effects on aging markers compared with three weeks. CONCLUSIONS According to the results, it can be concluded that resveratrol and quercetin, as potent herbal antioxidants, may have significant effects in reducing the complications of diabetes in kidneys, as well as preventing the aging of the kidney cells.
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Francisco FA, Saavedra LPJ, Junior MDF, Barra C, Matafome P, Mathias PCF, Gomes RM. Early AGEing and metabolic diseases: is perinatal exposure to glycotoxins programming for adult-life metabolic syndrome? Nutr Rev 2021; 79:13-24. [PMID: 32951053 DOI: 10.1093/nutrit/nuaa074] [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] [Indexed: 02/06/2023] Open
Abstract
Perinatal early nutritional disorders are critical for the developmental origins of health and disease. Glycotoxins, or advanced glycation end-products, and their precursors such as the methylglyoxal, which are formed endogenously and commonly found in processed foods and infant formulas, may be associated with acute and long-term metabolic disorders. Besides general aspects of glycotoxins, such as their endogenous production, exogenous sources, and their role in the development of metabolic syndrome, we discuss in this review the sources of perinatal exposure to glycotoxins and their involvement in metabolic programming mechanisms. The role of perinatal glycotoxin exposure in the onset of insulin resistance, central nervous system development, cardiovascular diseases, and early aging also are discussed, as are possible interventions that may prevent or reduce such effects.
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Affiliation(s)
- Flávio A Francisco
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Lucas P J Saavedra
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Marcos D F Junior
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, GO, Brazil
| | - Cátia Barra
- Institute of Physiology and Coimbra Institute of Clinical and Biomedical Research, Faculty of Medicine, and the Center for Innovative Biotechnology and Biomedicine, University of Coimbra; and the Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Paulo Matafome
- Institute of Physiology and Coimbra Institute of Clinical and Biomedical Research, Faculty of Medicine, and the Center for Innovative Biotechnology and Biomedicine, University of Coimbra; and the Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Paulo C F Mathias
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Rodrigo M Gomes
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, GO, Brazil
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Abdelmageed ME, Shehatou GSG, Suddek GM, Salem HA. Protocatechuic acid improves hepatic insulin resistance and restores vascular oxidative status in type-2 diabetic rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 83:103577. [PMID: 33383195 DOI: 10.1016/j.etap.2020.103577] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
This work explored influences of protocatechuic acid (PCA) on type 2 diabetes (T2D)-associated hepatic insulin resistance and other metabolic, hepatic and vascular irregularities using the rat model of high fat diet (HFD)+high fructose+low dose streptozotocin (STZ). Twenty-four male Wister rats were used. Twelve rats were ad libitum supplied with HFD and high fructose drinking water (25 % w/v) for 60 days. On day 30, they received a single injection of STZ (35 mg/kg, i.p). On day 32, they were divided into two subgroups (n = 6/each): T2D + PCA, received PCA (100 mg/kg/day, orally) and T2D, received PCA vehicle till the end of experiment. Rats provided with regular diet and fructose-free drinking water, with or without PCA treatment, served as PCA and control groups (n = 6/each), respectively. PCA treatment significantly reduced the elevated levels of fasting glycemia and insulin, AUCOGTT, AUCITT, and HOMA-IR index, while it boosted HOMA-β and insulinogenic index values in T2D rats. PCA ameliorated serum lipid levels and hepatic function parameters and mitigated hepatosteatosis in T2D rats. Mechanistically, PCA mitigated hepatic lipid peroxidation and restored reduced glutathione (GSH) and superoxide dismutase (SOD) to near-normal levels. Moreover, PCA enhanced hepatic protein levels of P-AKTser473 and hepatic mRNA expression of insulin receptor substrate 1 (IRS1), phosphatidylinositol 3 kinase (PI3K)-p85 and AKT2. Furthermore, PCA ameliorated aortic oxidative stress in T2D rats, possibly via reducing serum levels of advanced glycation end products (AGEs) and diminishing vascular expression of RAGE and NOX4 mRNA. Collectively, PCA may improve hepatic insulin resistance and vascular oxidative status by modulating IRS1/PI3K/AKT2 and AGE-RAGE-NOX4 pathways, respectively.
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MESH Headings
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/metabolism
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Glycation End Products, Advanced/blood
- Hydroxybenzoates/pharmacology
- Insulin/metabolism
- Insulin Receptor Substrate Proteins/genetics
- Insulin Resistance
- Liver/drug effects
- Liver/metabolism
- Male
- NADPH Oxidase 4/genetics
- Oxidative Stress/drug effects
- Phosphatidylinositol 3-Kinases/genetics
- Proto-Oncogene Proteins c-akt/genetics
- Rats, Wistar
- Receptor for Advanced Glycation End Products/metabolism
- Signal Transduction/drug effects
- Rats
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Affiliation(s)
- Marwa E Abdelmageed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - George S G Shehatou
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt; Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, International Coastal Road, Gamasa City, Egypt.
| | - Ghada M Suddek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Hatem A Salem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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Lee DY, Lin YC, Chang GD. Biochemical Regulation of the Glyoxalase System in Response to Insulin Signaling. Antioxidants (Basel) 2021; 10:antiox10020326. [PMID: 33671767 PMCID: PMC7926409 DOI: 10.3390/antiox10020326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/18/2022] Open
Abstract
Methylglyoxal (MG) is a reactive glycation metabolite and potentially induces dicarbonyl stress. The production of MG in cells is increased along with an increase in carbohydrate metabolism. The efficiency of the glyoxalase system, consisting of glyoxalase 1 (GlxI) and glyoxalase 2 (GlxII), is crucial for turning the accumulated MG into nontoxic metabolites. Converting MG-glutathione hemithioacetal to S-d-lactoylglutathione by GlxI is the rate-determining step of the enzyme system. In this study, we found lactic acid accumulated during insulin stimulation in cells, however, cellular MG and S-d-lactoylglutathione also increased due to the massive flux of glycolytic intermediates. The insulin-induced accumulation of MG and S-d-lactoylglutathione were efficiently removed by the treatment of metformin, possibly via affecting the glyoxalase system. With the application of isotopic 13C3-MG, the flux of MG from extracellular and intracellular origins was dissected. While insulin induced an influx of extracellular MG, metformin inhibited the trafficking of MG across the plasma membrane. Therefore, metformin could maintain the extracellular MG by means of reducing the secretion of MG rather than facilitating the scavenging. In addition, metformin may affect the glyoxalase system by controlling the cellular redox state through replenishing reduced glutathione. Overall, alternative biochemical regulation of the glyoxalase system mediated by insulin signaling or molecules like biguanides may control cellular MG homeostasis.
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Affiliation(s)
- Der-Yen Lee
- Graduate Institute of Integrated Medicine, China Medical University, No. 91, Hsueh-Shih Road, Taichung 40402, Taiwan
- Correspondence: (D.-Y.L.); (G.-D.C.); Tel.: +886-4-22053366#3505 (D.-Y.L.); +886-2-33664071 (G.-D.C.); Fax: +886-2-22037690 (D.-Y.L.); +886-2-23635038 (G.-D.C.)
| | - Yu-Chin Lin
- Ph.D. Program for Health Science and Industry, China Medical University, No. 91, Hsueh-Shih Road, Taichung 40402, Taiwan;
| | - Geen-Dong Chang
- Graduate Institute of Biochemical Sciences, National Taiwan University, No.1, Section 4, Roosevelt Road, Taipei 106, Taiwan
- Correspondence: (D.-Y.L.); (G.-D.C.); Tel.: +886-4-22053366#3505 (D.-Y.L.); +886-2-33664071 (G.-D.C.); Fax: +886-2-22037690 (D.-Y.L.); +886-2-23635038 (G.-D.C.)
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Restivo I, Attanzio A, Tesoriere L, Allegra M. Suicidal Erythrocyte Death in Metabolic Syndrome. Antioxidants (Basel) 2021; 10:antiox10020154. [PMID: 33494379 PMCID: PMC7911029 DOI: 10.3390/antiox10020154] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
Eryptosis is a coordinated, programmed cell death culminating with the disposal of cells without disruption of the cell membrane and the release of endocellular oxidative and pro-inflammatory milieu. While providing a convenient form of death for erythrocytes, dysregulated eryptosis may result in a series of detrimental and harmful pathological consequences highly related to the endothelial dysfunction (ED). Metabolic syndrome (MetS) is described as a cluster of cardiometabolic factors (hyperglycemia, dyslipidemia, hypertension and obesity) that increases the risk of cardiovascular complications such as those related to diabetes and atherosclerosis. In the light of the crucial role exerted by the eryptotic process in the ED, the focus of the present review is to report and discuss the involvement of eryptosis within MetS, where vascular complications are utterly relevant. Current knowledge on the mechanisms leading to eryptosis in MetS-related conditions (hyperglycemia, dyslipidemia, hypertension and obesity) will be analyzed. Moreover, clinical evidence supporting or proposing a role for eryptosis in the ED, associated to MetS cardiovascular complications, will be discussed.
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Affiliation(s)
| | | | - Luisa Tesoriere
- Correspondence: (L.T.); (M.A.); Tel.: +39-091-238-96803 (L.T. & M.A.)
| | - Mario Allegra
- Correspondence: (L.T.); (M.A.); Tel.: +39-091-238-96803 (L.T. & M.A.)
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Šilhavý J, Malínská H, Hüttl M, Marková I, Oliyarnyk O, Mlejnek P, Šimáková M, Liška F, Kazdová L, Moravcová R, Novotný J, Pravenec M. Downregulation of the Glo1 Gene Is Associated with Reduced Adiposity and Ectopic Fat Accumulation in Spontaneously Hypertensive Rats. Antioxidants (Basel) 2020; 9:antiox9121179. [PMID: 33255888 PMCID: PMC7759780 DOI: 10.3390/antiox9121179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 12/30/2022] Open
Abstract
Methylglyoxal (MG), a potent precursor of advanced glycation end-products (AGE), is increased in metabolic disorders such as diabetes and obesity. MG and other dicarbonyl metabolites are detoxified by the glyoxalase system in which glyoxalase 1, coded by the Glo1 gene, serves as the rate-limiting enzyme. In this study, we analyzed the effects of Glo1 downregulation on glucose and lipid metabolism parameters in spontaneously hypertensive rats (SHR) by targeting the Glo1 gene (SHR-Glo1+/− heterozygotes). Compared to SHR wild-type animals, SHR-Glo1+/− rats showed significantly reduced Glo1 expression and lower GLO1 activity in tissues associated with increased MG levels. In contrast to SHR controls, SHR-Glo1+/− rats exhibited lower relative weight of epididymal fat, reduced ectopic fat accumulation in the liver and heart, and decreased serum triglycerides. In addition, compared to controls, SHR-Glo1+/− rats showed reduced serum insulin and increased basal and insulin stimulated incorporation of glucose into white adipose tissue lipids (lipogenesis). Reduced ectopic fat accumulation in the heart was associated with significantly increased pAMPK/AMPK ratio and GLUT4 activity. These results provide evidence that Glo1 downregulation in SHR is associated with reduced adiposity and ectopic fat accumulation, most likely mediated by AMPK activation in the heart.
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Affiliation(s)
- Jan Šilhavý
- Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.Š.); (P.M.); (M.Š.); (F.L.)
| | - Hana Malínská
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (H.M.); (M.H.); (I.M.); (O.O.); (L.K.)
| | - Martina Hüttl
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (H.M.); (M.H.); (I.M.); (O.O.); (L.K.)
| | - Irena Marková
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (H.M.); (M.H.); (I.M.); (O.O.); (L.K.)
| | - Olena Oliyarnyk
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (H.M.); (M.H.); (I.M.); (O.O.); (L.K.)
| | - Petr Mlejnek
- Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.Š.); (P.M.); (M.Š.); (F.L.)
| | - Miroslava Šimáková
- Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.Š.); (P.M.); (M.Š.); (F.L.)
| | - František Liška
- Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.Š.); (P.M.); (M.Š.); (F.L.)
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, 12800 Prague, Czech Republic
| | - Ludmila Kazdová
- Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (H.M.); (M.H.); (I.M.); (O.O.); (L.K.)
| | - Radka Moravcová
- Department of Physiology, Faculty of Science, Charles University, 12843 Prague, Czech Republic; (R.M.); (J.N.)
| | - Jiří Novotný
- Department of Physiology, Faculty of Science, Charles University, 12843 Prague, Czech Republic; (R.M.); (J.N.)
| | - Michal Pravenec
- Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic; (J.Š.); (P.M.); (M.Š.); (F.L.)
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital, 12800 Prague, Czech Republic
- Correspondence: ; Tel.: +420-241-062-297; Fax: +420-244-472-269
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Komanetsky SM, Hedrick V, Sobreira T, Aryal UK, Kim SQ, Kim KH. Proteomic identification of aerobic glycolysis as a potential metabolic target for methylglyoxal in adipocytes. Nutr Res 2020; 80:66-77. [PMID: 32698053 DOI: 10.1016/j.nutres.2020.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 05/16/2020] [Accepted: 06/05/2020] [Indexed: 12/19/2022]
Abstract
Obesity is often accompanied by metabolic changes in adipocytes that are closely associated with metabolic disease. Although high sugar consumption contributes to obesity, it may also directly affect adipocytes by increasing the rate of glycolysis and formation of the glycolytic by-product methylglyoxal (MG). MG is a reactive dicarbonyl that irreversibly damages proteins and other cellular components. Although the accumulation of MG is clinically associated with hyperglycemia and diabetic complications, a better understanding of how proteins are regulated by MG is needed to evaluate its role in the pathogenesis of metabolic disease. Because adipocytes rely heavily on glycolysis for glucose disposal, we hypothesized that prolonged MG treatment at nontoxic concentrations would impact the landscape of proteins involved in glucose metabolism. To test this hypothesis, we treated 3T3-L1 adipocytes with MG (100 μmol/L) and used comparative proteomics to assess the effects. We identified 25 differentially expressed proteins in adipocytes treated with MG compared to the control. Our results suggested that MG induced metabolic changes typically associated with aerobic glycolysis, including a lowered expression of proteins involved in oxidative metabolism and increased expression of the glycolytic enzymes L-lactate dehydrogenase and glyceraldehyde-3-phosphate dehydrogenase. The detection of increased lactate secreted into the culture media of adipocytes treated with MG further supported these findings, as did gene expression analysis. In summary, these results indicate MG as a metabolic contributor to aerobic glycolysis in adipocytes, a potential adaptive response to increased glucose flux which over time could lead to permanent metabolic changes.
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Affiliation(s)
- Susan M Komanetsky
- Department of Nutrition, Purdue University, West Lafayette, IN 47907, USA
| | - Victoria Hedrick
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907, USA
| | - Tiago Sobreira
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907, USA
| | - Uma K Aryal
- Purdue Proteomics Facility, Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907, USA; Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907, USA
| | - Sora Q Kim
- Department of Nutrition, Purdue University, West Lafayette, IN 47907, USA
| | - Kee-Hong Kim
- Department of Food Science, Purdue University, West Lafayette, IN 47907, USA; Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA.
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Becker AK, Auditore A, Pischetsrieder M, Messlinger K, Fleming T, Reeh PW, Sauer SK. Reactive dicarbonyl compounds cause Calcitonin Gene-Related Peptide release and synergize with inflammatory conditions in mouse skin and peritoneum. J Biol Chem 2020; 295:6330-6343. [PMID: 32198181 DOI: 10.1074/jbc.ra120.012890] [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: 02/04/2020] [Revised: 03/18/2020] [Indexed: 02/02/2023] Open
Abstract
The plasmas of diabetic or uremic patients and of those receiving peritoneal dialysis treatment have increased levels of the glucose-derived dicarbonyl metabolites like methylglyoxal (MGO), glyoxal (GO), and 3-deoxyglucosone (3-DG). The elevated dicarbonyl levels can contribute to the development of painful neuropathies. Here, we used stimulated immunoreactive Calcitonin Gene-Related Peptide (iCGRP) release as a measure of nociceptor activation, and we found that each dicarbonyl metabolite induces a concentration-, TRPA1-, and Ca2+-dependent iCGRP release. MGO, GO, and 3-DG were about equally potent in the millimolar range. We hypothesized that another dicarbonyl, 3,4-dideoxyglucosone-3-ene (3,4-DGE), which is present in peritoneal dialysis (PD) solutions after heat sterilization, activates nociceptors. We also showed that at body temperatures 3,4-DGE is formed from 3-DG and that concentrations of 3,4-DGE in the micromolar range effectively induced iCGRP release from isolated murine skin. In a novel preparation of the isolated parietal peritoneum PD fluid or 3,4-DGE alone, at concentrations found in PD solutions, stimulated iCGRP release. We also tested whether inflammatory tissue conditions synergize with dicarbonyls to induce iCGRP release from isolated skin. Application of MGO together with bradykinin or prostaglandin E2 resulted in an overadditive effect on iCGRP release, whereas MGO applied at a pH of 5.2 resulted in reduced release, probably due to an MGO-mediated inhibition of transient receptor potential (TRP) V1 receptors. These results indicate that several reactive dicarbonyls activate nociceptors and potentiate inflammatory mediators. Our findings underline the roles of dicarbonyls and TRPA1 receptors in causing pain during diabetes or renal disease.
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Affiliation(s)
- Anna K Becker
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-University Erlangen-Nürnberg, Universitätsstrasse 17, 91054 Erlangen, Germany
| | - Andrea Auditore
- Department of Chemistry and Pharmacy, Food Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Department of Chemistry and Pharmacy, Food Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Karl Messlinger
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-University Erlangen-Nürnberg, Universitätsstrasse 17, 91054 Erlangen, Germany
| | - Thomas Fleming
- Department of Medicine I and Clinical Chemistry and Pharmacology, University of Heidelberg, INF 410, 69120 Heidelberg, Germany.,German Center for Diabetes Research (DZD), Eberhard-Karls-University of Tuebingen, Otfried-Müller-Strasse 10, 72076 Tuebingen, Germany
| | - Peter W Reeh
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-University Erlangen-Nürnberg, Universitätsstrasse 17, 91054 Erlangen, Germany
| | - Susanne K Sauer
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-University Erlangen-Nürnberg, Universitätsstrasse 17, 91054 Erlangen, Germany
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Mondal S, Mukherjee S. Long-term dietary administration of diethyl phthalate triggers loss of insulin sensitivity in two key insulin target tissues of mice. Hum Exp Toxicol 2020; 39:984-993. [PMID: 32129097 DOI: 10.1177/0960327120909526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Over the past years, a growing body of work has linked numerous pervasive environmental chemicals with a multitude of adverse reproductive, developmental, behavioral, and metabolic changes in humans and animal models. Plasticizers include a wide variety of phthalate esters that are extensively used in a host of personal day care and cosmetic products. Many population-based studies have indicated a close association between diethyl phthalate (DEP) and diabetes albeit the mechanisms remain much unexplored. Presently, we report that long-term dietary administration of DEP to adult male Swiss albino mice at two different concentrations mirroring the recommended tolerable doses, severely impaired insulin signaling in hepatocytes and adipocytes. This was concomitant with sustained oxidative stress from the overactivation of NADPH oxidase 2, a major intracellular source of reactive oxygen species, in both the cell types. The present study provides evidences of the onset of insulin resistance in mice after chronic exposure to DEP in diet even at lower levels. This, in turn, can have serious pathological consequences with ultimate manifestations of type 2 diabetes and metabolic syndrome (MetS). Thus, by disrupting the central metabolic function of liver and adipose tissue, the key insulin target tissues, daily exposure to phthalates in plastics can potentially contribute to the alarming prevalence of MetS in recent times.
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Affiliation(s)
- S Mondal
- Endocrinology and Metabolism Laboratory, Department of Zoology, Visva-Bharati (A Central University), Santiniketan, West Bengal, India
| | - S Mukherjee
- Endocrinology and Metabolism Laboratory, Department of Zoology, Visva-Bharati (A Central University), Santiniketan, West Bengal, India
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40
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Ruiz HH, Ramasamy R, Schmidt AM. Advanced Glycation End Products: Building on the Concept of the "Common Soil" in Metabolic Disease. Endocrinology 2020; 161:bqz006. [PMID: 31638645 PMCID: PMC7188081 DOI: 10.1210/endocr/bqz006] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Revised: 10/01/2019] [Accepted: 08/16/2019] [Indexed: 12/11/2022]
Abstract
The role of advanced glycation end products (AGEs) in promoting and/or exacerbating metabolic dysregulation is being increasingly recognized. AGEs are formed when reducing sugars nonenzymatically bind to proteins or lipids, a process that is enhanced by hyperglycemic and hyperlipidemic environments characteristic of numerous metabolic disorders including obesity, diabetes, and its complications. In this mini-review, we put forth the notion that AGEs span the spectrum from cause to consequence of insulin resistance and diabetes, and represent a "common soil" underlying the pathophysiology of these metabolic disorders. Collectively, the surveyed literature suggests that AGEs, both those that form endogenously as well as exogenous AGEs derived from environmental factors such as pollution, smoking, and "Western"-style diets, contribute to the pathogenesis of obesity and diabetes. Specifically, AGE accumulation in key metabolically relevant organs induces insulin resistance, inflammation, and oxidative stress, which in turn provide substrates for excess AGE formation, thus creating a feed-forward-fueled pathological loop mediating metabolic dysfunction.
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Affiliation(s)
- Henry H Ruiz
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU School of Medicine, New York, NY, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU School of Medicine, New York, NY, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, NYU School of Medicine, New York, NY, USA
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41
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Schalkwijk CG, Stehouwer CDA. Methylglyoxal, a Highly Reactive Dicarbonyl Compound, in Diabetes, Its Vascular Complications, and Other Age-Related Diseases. Physiol Rev 2020; 100:407-461. [DOI: 10.1152/physrev.00001.2019] [Citation(s) in RCA: 176] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The formation and accumulation of methylglyoxal (MGO), a highly reactive dicarbonyl compound, has been implicated in the pathogenesis of type 2 diabetes, vascular complications of diabetes, and several other age-related chronic inflammatory diseases such as cardiovascular disease, cancer, and disorders of the central nervous system. MGO is mainly formed as a byproduct of glycolysis and, under physiological circumstances, detoxified by the glyoxalase system. MGO is the major precursor of nonenzymatic glycation of proteins and DNA, subsequently leading to the formation of advanced glycation end products (AGEs). MGO and MGO-derived AGEs can impact on organs and tissues affecting their functions and structure. In this review we summarize the formation of MGO, the detoxification of MGO by the glyoxalase system, and the biochemical pathways through which MGO is linked to the development of diabetes, vascular complications of diabetes, and other age-related diseases. Although interventions to treat MGO-associated complications are not yet available in the clinical setting, several strategies to lower MGO have been developed over the years. We will summarize several new directions to target MGO stress including glyoxalase inducers and MGO scavengers. Targeting MGO burden may provide new therapeutic applications to mitigate diseases in which MGO plays a crucial role.
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Affiliation(s)
- C. G. Schalkwijk
- CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, The Netherlands; and Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - C. D. A. Stehouwer
- CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, The Netherlands; and Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
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Psoralea corylifolia L. Seed Extract Attenuates Methylglyoxal-Induced Insulin Resistance by Inhibition of Advanced Glycation End Product Formation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4310319. [PMID: 31976027 PMCID: PMC6954480 DOI: 10.1155/2019/4310319] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/31/2019] [Accepted: 12/05/2019] [Indexed: 01/11/2023]
Abstract
Accumulation of advanced glycation end products (AGEs) in the body has been implicated in the pathogenesis of metabolic conditions, such as diabetes mellitus. Methylglyoxal (MGO), a major precursor of AGEs, has been reported to induce insulin resistance in both in vitro and in vivo studies. Psoralea corylifolia seeds (PCS) have been used as a traditional medicine for several diseases, but their potential application in treating insulin resistance has not yet been evaluated. This study is aimed at investigating whether PCS extract could attenuate insulin resistance induced by MGO. Male C57BL/6N mice (6 weeks old) were administered 1% MGO in their drinking water for 18 weeks, and the PCS extract (200 or 500 mg/kg) was orally administered daily from the first day of the MGO administration. We observed that both 200 and 500 mg/kg PCS extract treatment significantly improved glucose tolerance and insulin sensitivity and markedly restored p-Akt and p-IRS1/2 expression in the livers of the MGO-administered mice. Additionally, the PCS extract significantly increased the phosphorylation of Akt and IRS-1/2 and glucose uptake in MGO-treated HepG2 cells. Further studies showed that the PCS extract inhibited MGO-induced AGE formation in the HepG2 cells and in the sera of MGO-administered mice. PCS extract also increased the expression of glyoxalase 1 (GLO1) in the liver tissue of MGO-administered mice. The PCS extract significantly decreased the phosphorylation of ERK, p38, and NF-κB and suppressed the mRNA expression of proinflammatory molecules including TNF-α and IL-1β and iNOS in MGO-administered mice. Additionally, we demonstrated that the PCS extract attenuated oxidative stress, as evidenced by the reduced ROS production in the MGO-treated cells and the enhanced expression of antioxidant enzymes in the liver of MGO-administered mice. Thus, PCS extract ameliorated the MGO-induced insulin resistance in HepG2 cells and in mice by reducing oxidative stress via the inhibition of AGE formation. These findings suggest the potential of PCS extract as a candidate for the prevention and treatment of insulin resistance.
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Proietti S, Falconieri GS, Bertini L, Baccelli I, Paccosi E, Belardo A, Timperio AM, Caruso C. GLYI4 Plays A Role in Methylglyoxal Detoxification and Jasmonate-Mediated Stress Responses in Arabidopsis thaliana. Biomolecules 2019; 9:biom9100635. [PMID: 31652571 PMCID: PMC6843518 DOI: 10.3390/biom9100635] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/18/2022] Open
Abstract
Plant hormones play a central role in various physiological functions and in mediating defense responses against (a)biotic stresses. In response to primary metabolism alteration, plants can produce also small molecules such as methylglyoxal (MG), a cytotoxic aldehyde. MG is mostly detoxified by the combined actions of the enzymes glyoxalase I (GLYI) and glyoxalase II (GLYII) that make up the glyoxalase system. Recently, by a genome-wide association study performed in Arabidopsis, we identified GLYI4 as a novel player in the crosstalk between jasmonate (JA) and salicylic acid (SA) hormone pathways. Here, we investigated the impact of GLYI4 knock-down on MG scavenging and on JA pathway. In glyI4 mutant plants, we observed a general stress phenotype, characterized by compromised MG scavenging, accumulation of reactive oxygen species (ROS), stomatal closure, and reduced fitness. Accumulation of MG in glyI4 plants led to lower efficiency of the JA pathway, as highlighted by the increased susceptibility of the plants to the pathogenic fungus Plectospherella cucumerina. Moreover, MG accumulation brought about a localization of GLYI4 to the plasma membrane, while MeJA stimulus induced a translocation of the protein into the cytoplasmic compartment. Collectively, the results are consistent with the hypothesis that GLYI4 is a hub in the MG and JA pathways.
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Affiliation(s)
- Silvia Proietti
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
| | | | - Laura Bertini
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
| | - Ivan Baccelli
- Institute for Sustainable Plant Protection, National Research Council of Italy, Sesto Fiorentino, 50019 Florence, Italy.
| | - Elena Paccosi
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
| | - Antonio Belardo
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
| | - Anna Maria Timperio
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
| | - Carla Caruso
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy.
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Dicarbonyl Stress at the Crossroads of Healthy and Unhealthy Aging. Cells 2019; 8:cells8070749. [PMID: 31331077 PMCID: PMC6678343 DOI: 10.3390/cells8070749] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023] Open
Abstract
Dicarbonyl stress occurs when dicarbonyl metabolites (i.e., methylglyoxal, glyoxal and 3-deoxyglucosone) accumulate as a consequence of their increased production and/or decreased detoxification. This toxic condition has been associated with metabolic and age-related diseases, both of which are characterized by a pro-inflammatory and pro-oxidant state. Methylglyoxal (MGO) is the most reactive dicarbonyl and the one with the highest endogenous flux. It is the precursor of the major quantitative advanced glycated products (AGEs) in physiological systems, arginine-derived hydroimidazolones, which accumulate in aging and dysfunctional tissues. The aging process is characterized by a decline in the functional properties of cells, tissues and whole organs, starting from the perturbation of crucial cellular processes, including mitochondrial function, proteostasis and stress-scavenging systems. Increasing studies are corroborating the causal relationship between MGO-derived AGEs and age-related tissue dysfunction, unveiling a previously underestimated role of dicarbonyl stress in determining healthy or unhealthy aging. This review summarizes the latest evidence supporting a causal role of dicarbonyl stress in age-related diseases, including diabetes mellitus, cardiovascular disease and neurodegeneration.
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Lodd E, Wiggenhauser LM, Morgenstern J, Fleming TH, Poschet G, Büttner M, Tabler CT, Wohlfart DP, Nawroth PP, Kroll J. The combination of loss of glyoxalase1 and obesity results in hyperglycemia. JCI Insight 2019; 4:126154. [PMID: 31217350 DOI: 10.1172/jci.insight.126154] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 05/16/2019] [Indexed: 12/31/2022] Open
Abstract
The increased formation of methylglyoxal (MG) under hyperglycemia is associated with the development of microvascular complications in patients with diabetes mellitus; however, the effects of elevated MG levels in vivo are poorly understood. In zebrafish, a transient knockdown of glyoxalase 1, the main MG detoxifying system, led to the elevation of endogenous MG levels and blood vessel alterations. To evaluate effects of a permanent knockout of glyoxalase 1 in vivo, glo1-/- zebrafish mutants were generated using CRISPR/Cas9. In addition, a diet-induced-obesity zebrafish model was used to analyze glo1-/- zebrafish under high nutrient intake. Glo1-/- zebrafish survived until adulthood without growth deficit and showed increased tissue MG concentrations. Impaired glucose tolerance developed in adult glo1-/- zebrafish and was indicated by increased postprandial blood glucose levels and postprandial S6 kinase activation. Challenged by an overfeeding period, fasting blood glucose levels in glo1-/- zebrafish were increased which translated into retinal blood vessel alterations. Thus, the data have identified a defective MG detoxification as a metabolic prerequisite and glyoxalase 1 alterations as a genetic susceptibility to the development of type 2 diabetes mellitus under high nutrition intake.
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Affiliation(s)
- Elisabeth Lodd
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Lucas M Wiggenhauser
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Jakob Morgenstern
- Department of Internal Medicine I and Clinical Chemistry, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas H Fleming
- Department of Internal Medicine I and Clinical Chemistry, Heidelberg University Hospital, Heidelberg, Germany
| | - Gernot Poschet
- Metabolomics Core Technology Platform, Centre for Organismal Studies, Heidelberg University, Heidelberg, Germany
| | - Michael Büttner
- Metabolomics Core Technology Platform, Centre for Organismal Studies, Heidelberg University, Heidelberg, Germany
| | - Christoph T Tabler
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - David P Wohlfart
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter P Nawroth
- Department of Internal Medicine I and Clinical Chemistry, Heidelberg University Hospital, Heidelberg, Germany.,German Center for Diabetes Research (DZD), München-Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Helmholtz-Zentrum, München, Heidelberg, Germany
| | - Jens Kroll
- Department of Vascular Biology and Tumor Angiogenesis, European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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Rai AK, Jaiswal N, Maurya CK, Sharma A, Ahmad I, Ahmad S, Gupta AP, Gayen JR, Tamrakar AK. Fructose-induced AGEs-RAGE signaling in skeletal muscle contributes to impairment of glucose homeostasis. J Nutr Biochem 2019; 71:35-44. [PMID: 31272030 DOI: 10.1016/j.jnutbio.2019.05.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 02/06/2023]
Abstract
Increased fructose intake has been linked to the development of dyslipidemia, obesity and impaired glucose tolerance. Due to its specific metabolic fate, fructose impairs normal lipid and carbohydrate metabolism and facilitates the non-enzymatic glycation reaction leading to enhanced accumulation of advanced glycation end products (AGEs). However, the formation of fructose-AGEs under in vivo setup and its tissue specific accumulation is less explored. Here, we investigated the impact of high fructose on AGEs accumulation in skeletal muscle and its causal role in impaired glucose homeostasis. In L6 rat skeletal muscle cells, chronic exposure to fructose induced AGEs accumulation and the cellular level of the receptor for AGEs (RAGE) and the effect was prevented by pharmacological inhibition of glycation. Under in vivo settings, Sprague Dawley rats exposed to 20% fructose in drinking water for 16 weeks, displayed increased fasting glycemia, impaired glucose tolerance, decreased skeletal muscle Akt (Ser-473) phosphorylation, and enhanced triglyceride levels in serum, liver and gastrocnemius muscle. We also observed a high level of AGEs in serum and gastrocnemius muscle of fructose-supplemented animals, associated with methylglyoxal accumulation and up regulated expression of RAGE in gastrocnemius muscle. Treatment with aminoguanidine inhibited fructose-induced AGEs accumulation and normalized the expression of RAGE and Dolichyl-Diphosphooligosaccharide-Protein Glycosyltransferase (DDOST) in gastrocnemius muscle. Inhibition of AGEs-RAGE axis counteracted fructose-mediated glucose intolerance without affecting energy metabolism. These data reveal diet-derived AGEs accumulation in skeletal muscle and the implication of tissue specific AGEs in metabolic derangement, that may open new perspectives in pathogenic mechanisms and management of metabolic diseases.
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Affiliation(s)
- Amit K Rai
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Natasha Jaiswal
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Chandan K Maurya
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Aditya Sharma
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Ishbal Ahmad
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Shadab Ahmad
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031; Academy of Scientific and Innovative Research (AcSIR), New Delhi-201002, India
| | - Anand P Gupta
- Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Jiaur R Gayen
- Pharmacokinetics and Metabolism Division, CSIR-Central Drug Research Institute, Lucknow-226031
| | - Akhilesh K Tamrakar
- Biochemistry Division, CSIR-Central Drug Research Institute, Lucknow-226031; Academy of Scientific and Innovative Research (AcSIR), New Delhi-201002, India.
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Lee KM, Lee CY, Zhang G, Lyu A, Yue KKM. Methylglyoxal activates osteoclasts through JNK pathway leading to osteoporosis. Chem Biol Interact 2019; 308:147-154. [PMID: 31103701 DOI: 10.1016/j.cbi.2019.05.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/03/2019] [Accepted: 05/13/2019] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus is characterized by chronic hyperglycemia and its diverse complications. Hyperglycemia is associated with inflammatory responses in different organs, and diabetic patients have a higher risk of bone fracture due to increased bone weakness. Methylglyoxal, a reactive advanced glycation end product precursor, is known to have increased level in diabetic patients. The accumulation of methylglyoxal promotes inflammation and it may play a role in diabetes related osteoporosis. In this study, therefore, the underlying mechanism of methylglyoxal on osteoporosis was studied using both animal and cell models. In the animal model, rats were treated with either methylglyoxal or saline as control. In the cell model, the macrophage RAW264.7 was treated with methylglyoxal or vehicle control. Following the treatment, animal samples were harvested for micro-CT and real-time polymerase chain reaction analyses. Cell samples were harvested for MTT assay, RT-PCR, and Western Blotting analyses. In both animals and cell cultures, methylglyoxal was shown to induce osteoclastogenesis by increased gene expression of osteoclast bone biomarkers CTSK, OSCAR and TRACP5. Furthermore, in methylglyoxal-treated macrophages activation of the c-Jun N-terminal kinases signaling pathway was observed, and inhibition of JNK activities resulted in down-regulation of osteoclast biomarkers gene expressions. Our results therefore suggested that methylglyoxal may contribute to the progression of diabetes-related osteoporosis and imbalanced bone remodeling through JNK pathway in osteoclasts.
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Affiliation(s)
- Kwan Ming Lee
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Cheuk Yan Lee
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Ge Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Institute for Advancing Translational Medicine in Bone & Joint Diseases, Hong Kong Baptist University, Hong Kong, China
| | - Aiping Lyu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Institute for Advancing Translational Medicine in Bone & Joint Diseases, Hong Kong Baptist University, Hong Kong, China
| | - Kevin Kin Man Yue
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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48
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Methylglyoxal – An emerging biomarker for diabetes mellitus diagnosis and its detection methods. Biosens Bioelectron 2019; 133:107-124. [DOI: 10.1016/j.bios.2019.03.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/07/2019] [Accepted: 03/07/2019] [Indexed: 02/07/2023]
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Abstract
Significance: Obesity and type 2 diabetes mellitus are increasing globally. There is also increasing associated complications, such as non-alcoholic fatty liver disease (NAFLD) and vascular complications of diabetes. There is currently no licensed treatment for NAFLD and no recent treatments for diabetic complications. New approaches are required, particularly those addressing mechanism-based risk factors for health decline and disease progression. Recent Advances: Dicarbonyl stress is the abnormal accumulation of reactive dicarbonyl metabolites such as methylglyoxal (MG) leading to cell and tissue dysfunction. It is a potential driver of obesity, diabetes, and related complications that are unaddressed by current treatments. Increased formation of MG is linked to increased glyceroneogenesis and hyperglycemia in obesity and diabetes and also down-regulation of glyoxalase 1 (Glo1)-which provides the main enzymatic detoxification of MG. Glo1 functional genomics studies suggest that increasing Glo1 expression and activity alleviates dicarbonyl stress; slows development of obesity, related insulin resistance; and prevents development of diabetic nephropathy and other microvascular complications of diabetes. A new therapeutic approach constitutes small-molecule inducers of Glo1 expression-Glo1 inducers-exploiting a regulatory antioxidant response element in the GLO1 gene. A prototype Glo1 inducer, trans-resveratrol (tRES)-hesperetin (HESP) combination, in corrected insulin resistance, improved glycemic control and vascular inflammation in healthy overweight and obese subjects in clinical trial. Critical Issues: tRES and HESP synergize pharmacologically, and HESP likely overcomes the low bioavailability of tRES by inhibition of intestinal glucuronosyltransferases. Future Directions: Glo1 inducers may now be evaluated in Phase 2 clinical trials for treatment of NAFLD and vascular complications of diabetes.
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Affiliation(s)
- Naila Rabbani
- 1 Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital , Coventry, United Kingdom .,2 Warwick Systems Biology Centre, Senate House, University of Warwick , Coventry, United Kingdom
| | - Paul J Thornalley
- 1 Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, University Hospital , Coventry, United Kingdom .,2 Warwick Systems Biology Centre, Senate House, University of Warwick , Coventry, United Kingdom
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50
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Sachdeva R, Fleming T, Schumacher D, Homberg S, Stilz K, Mohr F, Wagner AH, Tsvilovskyy V, Mathar I, Freichel M. Methylglyoxal evokes acute Ca 2+ transients in distinct cell types and increases agonist-evoked Ca 2+ entry in endothelial cells via CRAC channels. Cell Calcium 2019; 78:66-75. [PMID: 30658323 DOI: 10.1016/j.ceca.2019.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 12/21/2022]
Abstract
Methylglyoxal (MG) is a by-product of glucose metabolism and its accumulation has been linked to the development of diabetic complications such as retinopathy and nephropathy by affecting multiple signalling pathways. However, its influence on the intracellular Ca2+ homeostasis and particularly Ca2+ entry, which has been reported to be mediated via TRPA1 channels in DRG neurons, has not been studied in much detail in other cell types. In this study, we report the consequences of acute and long-term MG application on intracellular Ca2+ levels in endothelial cells. We showed that acute MG application doesn't evoke any instantaneous changes in the intracellular Ca2+ concentration in immortalized mouse cardiac endothelial cells (MCECs) and murine microvascular endothelial cells (muMECs). In contrast, an MG-induced rise in intracellular Ca2+ level was observed in primary mouse mesangial cells within 30 s, indicating that the modulation of Ca2+ homeostasis by MG is strictly cell type specific. The formation of the MG-derived advanced glycation end product (AGE) MG-H1 was found to be time and concentration-dependent in MCECs. Likewise, MG pre-incubation for 6 h increased the angiotensin II-evoked Ca2+ entry in MCECs and muMECs which was abrogated by inhibition of Calcium release activated calcium (CRAC) channels with GSK-7975A, but unaffected by an inhibitor specific to TRPA1 channels. Quantitative PCR analysis revealed that MG pre-treatment did not affect expression of the genes encoding the angiotensin receptors AT1R (Agtr 1a & Agtr 1b), Trpa1 nor Orai1, Orai2, Orai3, Stim1, Stim2 and Saraf which operate as constituents or regulators of CRAC channels and store-operated Ca2+ entry (SOCE) in other cell types. Together, our results show that long-term MG stimulation leads to the formation of glycation end products, which facilitates the agonist-evoked Ca2+ entry in endothelial cells, and this could be a new pathway that might lead to MG-evoked vasoregression observed in diabetic vasculopathies.
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Affiliation(s)
- Robin Sachdeva
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Thomas Fleming
- Department of Medicine I and Clinical Chemistry, Heidelberg University Hospital, Germany; German Center for Diabetes Research (DZD), Germany
| | - Dagmar Schumacher
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Sarah Homberg
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Kathrin Stilz
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Franziska Mohr
- Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, Im Neuenheimer Feld 326, 69120 Heidelberg, Germany
| | - Andreas H Wagner
- Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, Im Neuenheimer Feld 326, 69120 Heidelberg, Germany
| | - Volodymyr Tsvilovskyy
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Ilka Mathar
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Marc Freichel
- Institute of Pharmacology, Heidelberg University, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany.
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