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Demirer B, Fisunoğlu M. Evaluation of the effects of dietary advanced glycation end products on inflammation. NUTR BULL 2024; 49:6-18. [PMID: 38114851 DOI: 10.1111/nbu.12653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023]
Abstract
Advanced glycation end products (AGEs) are a large number of heterogeneous compounds formed by the glycation of proteins, fats or nucleic acids. Endogenous AGEs have been associated with various health problems such as obesity, type 2 diabetes mellitus and cardiovascular disease. Inflammation is thought to be one of the main mechanisms in the development of these disorders. Although AGEs are produced endogenously in the body, exogenous sources such as smoking and diet also contribute to the body pool. Therefore, when the AGE pool in the body rises above physiological levels, different pathological conditions may occur through various mechanisms, especially inflammation. While the effects of endogenous AGEs on the development of inflammation have been studied relatively extensively, and current evidence indicates that dietary AGEs (dAGEs) contribute to the body's AGE pool, it is not yet known whether dAGEs have the same effect on the development of inflammation as endogenous AGEs. Therefore, this review aimed to evaluate the results of cross-sectional and intervention studies to understand whether dAGEs are associated with inflammation and, if there is an effect on inflammation, through which mechanisms this effect might occur.
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Affiliation(s)
- Büşra Demirer
- Nutrition and Dietetics, Karabuk University, Karabuk, Turkey
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2
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Fan W, Adebowale K, Váncza L, Li Y, Rabbi MF, Kunimoto K, Chen D, Mozes G, Chiu DKC, Li Y, Tao J, Wei Y, Adeniji N, Brunsing RL, Dhanasekaran R, Singhi A, Geller D, Lo SH, Hodgson L, Engleman EG, Charville GW, Charu V, Monga SP, Kim T, Wells RG, Chaudhuri O, Török NJ. Matrix viscoelasticity promotes liver cancer progression in the pre-cirrhotic liver. Nature 2024; 626:635-642. [PMID: 38297127 PMCID: PMC10866704 DOI: 10.1038/s41586-023-06991-9] [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: 09/21/2022] [Accepted: 12/18/2023] [Indexed: 02/02/2024]
Abstract
Type 2 diabetes mellitus is a major risk factor for hepatocellular carcinoma (HCC). Changes in extracellular matrix (ECM) mechanics contribute to cancer development1,2, and increased stiffness is known to promote HCC progression in cirrhotic conditions3,4. Type 2 diabetes mellitus is characterized by an accumulation of advanced glycation end-products (AGEs) in the ECM; however, how this affects HCC in non-cirrhotic conditions is unclear. Here we find that, in patients and animal models, AGEs promote changes in collagen architecture and enhance ECM viscoelasticity, with greater viscous dissipation and faster stress relaxation, but not changes in stiffness. High AGEs and viscoelasticity combined with oncogenic β-catenin signalling promote HCC induction, whereas inhibiting AGE production, reconstituting the AGE clearance receptor AGER1 or breaking AGE-mediated collagen cross-links reduces viscoelasticity and HCC growth. Matrix analysis and computational modelling demonstrate that lower interconnectivity of AGE-bundled collagen matrix, marked by shorter fibre length and greater heterogeneity, enhances viscoelasticity. Mechanistically, animal studies and 3D cell cultures show that enhanced viscoelasticity promotes HCC cell proliferation and invasion through an integrin-β1-tensin-1-YAP mechanotransductive pathway. These results reveal that AGE-mediated structural changes enhance ECM viscoelasticity, and that viscoelasticity can promote cancer progression in vivo, independent of stiffness.
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Affiliation(s)
- Weiguo Fan
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Kolade Adebowale
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
| | - Lóránd Váncza
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Yuan Li
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Md Foysal Rabbi
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Koshi Kunimoto
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Dongning Chen
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Gergely Mozes
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - David Kung-Chun Chiu
- Department of Pathology, Stanford University, Stanford, CA, USA
- Division of Immunology, Stanford University, Stanford, CA, USA
| | - Yisi Li
- Department of Automation, Tsinghua University, Beijing, China
| | - Junyan Tao
- Pittsburgh Liver Research Center, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Yi Wei
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Nia Adeniji
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Ryan L Brunsing
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - Renumathy Dhanasekaran
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
- VA, Palo Alto, CA, USA
| | - Aatur Singhi
- Pittsburgh Liver Research Center, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - David Geller
- Pittsburgh Liver Research Center, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Su Hao Lo
- Department of Biochemistry and Molecular Medicine, University of California at Davis, Sacramento, CA, USA
| | - Louis Hodgson
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, NY, USA
| | - Edgar G Engleman
- Department of Pathology, Stanford University, Stanford, CA, USA
- Division of Immunology, Stanford University, Stanford, CA, USA
| | | | - Vivek Charu
- Department of Pathology, Stanford University, Stanford, CA, USA
- Quantitative Sciences Unit, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Satdarshan P Monga
- Pittsburgh Liver Research Center, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Taeyoon Kim
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
- Faculty of Science and Technology, Keio University, Yokohama, Japan
| | - Rebecca G Wells
- Departments of Medicine and Bioengineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Ovijit Chaudhuri
- Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
- Department of Mechanical Engineering, Stanford University, Stanford, CA, USA
| | - Natalie J Török
- Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA.
- VA, Palo Alto, CA, USA.
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3
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Ujaoney AK, Anaganti N, Padwal MK, Basu B. Tracing the serendipitous genesis of radiation resistance. Mol Microbiol 2024; 121:142-151. [PMID: 38082498 DOI: 10.1111/mmi.15208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 11/01/2023] [Accepted: 11/27/2023] [Indexed: 01/15/2024]
Abstract
Free-living organisms frequently encounter unfavorable abiotic environmental factors. Those who adapt and cope with sudden changes in the external environment survive. Desiccation is one of the most common and frequently encountered stresses in nature. On the contrary, ionizing radiations are limited to high local concentrations of naturally occurring radioactive materials and related anthropogenic activities. Yet, resistance to high doses of ionizing radiation is evident across the tree of life. The evolution of desiccation resistance has been linked to the evolution of ionizing radiation resistance, although, evidence to support the idea that the evolution of desiccation tolerance is a necessary precursor to ionizing radiation resistance is lacking. Moreover, the presence of radioresistance in hyperthermophiles suggests multiple paths lead to radiation resistance. In this minireview, we focus on the molecular aspects of damage dynamics and damage response pathways comprising protective and restorative functions with a definitive survival advantage, to explore the serendipitous genesis of ionizing radiation resistance.
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Affiliation(s)
- Aman Kumar Ujaoney
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Narasimha Anaganti
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Mahesh Kumar Padwal
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Bhakti Basu
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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Garai S, Bhowal B, Gupta M, Sopory SK, Singla-Pareek SL, Pareek A, Kaur C. Role of methylglyoxal and redox homeostasis in microbe-mediated stress mitigation in plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 338:111922. [PMID: 37952767 DOI: 10.1016/j.plantsci.2023.111922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/04/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
One of the general consequences of stress in plants is the accumulation of reactive oxygen (ROS) and carbonyl species (like methylglyoxal) to levels that are detrimental for plant growth. These reactive species are inherently produced in all organisms and serve different physiological functions but their excessive accumulation results in cellular toxicity. It is, therefore, essential to restore equilibrium between their synthesis and breakdown to ensure normal cellular functioning. Detoxification mechanisms that scavenge these reactive species are considered important for stress mitigation as they maintain redox balance by restricting the levels of ROS, methylglyoxal and other reactive species in the cellular milieu. Stress tolerance imparted to plants by root-associated microbes involves a multitude of mechanisms, including maintenance of redox homeostasis. By improving the overall antioxidant response in plants, microbes can strengthen defense pathways and hence, the adaptive abilities of plants to sustain growth under stress. Hence, through this review we wish to highlight the contribution of root microbiota in modulating the levels of reactive species and thereby, maintaining redox homeostasis in plants as one of the important mechanisms of stress alleviation. Further, we also examine the microbial mechanisms of resistance to oxidative stress and their role in combating plant stress.
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Affiliation(s)
- Sampurna Garai
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Bidisha Bhowal
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Mayank Gupta
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Sudhir K Sopory
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Sneh L Singla-Pareek
- International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Ashwani Pareek
- National Agri-Food Biotechnology Institute, SAS Nagar, Mohali, Punjab 140306, India
| | - Charanpreet Kaur
- National Agri-Food Biotechnology Institute, SAS Nagar, Mohali, Punjab 140306, India.
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Cai J, Wu H, Wang C, Chen Y, Zhang D, Guan S, Fu B, Jin Y, Qian C. Sec1 regulates intestinal mucosal immunity in a mouse model of inflammatory bowel disease. BMC Immunol 2023; 24:51. [PMID: 38066482 PMCID: PMC10704666 DOI: 10.1186/s12865-023-00578-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 10/16/2023] [Indexed: 12/18/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a common immune-mediated condition with its molecular pathogenesis remaining to be fully elucidated. This study aimed to deepen our understanding of the role of FUT2 in human IBD, by studying a new surrogate gene Sec1, a neighboring gene of Fut2 and Fut1 that co-encodes the α 1,2 fucosyltransferase in mice. CRISPR/Cas9 was used to prepare Sec1 knockout (Sec1-/-) mice. IBD was induced in mice using 3% w/v dextran sulphate sodium. Small interfering RNA (siRNA) was employed to silence Sec1 in murine colon cancer cell lines CT26.WT and CMT93. IBD-related symptoms, colonic immune responses, proliferation and apoptosis of colon epithelial cells were assessed respectively to determine the role of Sec1 in mouse IBD. Impact of Sec1 on the expression of death receptor 5 (DR5) and other apoptosis-associated proteins were determined. Sec1 knockout was found to be associated with deterioration of IBD in mice and elevated immune responses in the colonic mucosa. Silencing Sec1 in CT26.WT and CMT93 cells led to greater secretion of inflammatory cytokines IL-1β, IL-6 and TNF-α. Cell counting kit 8 (CCK8) assay, flow cytometry and TUNEL detection suggested that Sec1 expression promoted the proliferation of colon epithelial cells, inhibited cell apoptosis, reduced cell arrest in G0/G1 phase and facilitated repair of inflammatory injury. Over-expression of DR5 and several apoptosis-related effector proteins was noticed in Sec1-/- mice and Sec1-silenced CT26.WT and CMT93 cells, supporting a suppressive role of Sec1 in cell apoptosis. Our results depicted important regulatory roles of Sec1 in mouse IBD, further reflecting the importance of FUT2 in the pathogenesis of human IBD.
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Affiliation(s)
- Jing Cai
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, 310016, China
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, 310016, China
- Department of Comprehensive Medicine, The Second, Wenzhou Central Hospital Medical Group, Affiliated Hospital of Shanghai University, Affiliated Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, 325000, China
| | - Hao Wu
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
| | - Chenxing Wang
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Yujiao Chen
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Dingli Zhang
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Shiwei Guan
- Department of Hepatobiliary Surgery, Wenzhou Central Hospital, The Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, P.R. China
| | - Beilei Fu
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Yingli Jin
- Department of Gastroenterology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Cao Qian
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, 310016, China.
- Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, 310016, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou, 310016, Zhejiang, China.
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Poojari AS, Wairkar S, Kulkarni YA. Stem cells as a regenerative medicine approach in treatment of microvascular diabetic complications. Tissue Cell 2023; 85:102225. [PMID: 37801960 DOI: 10.1016/j.tice.2023.102225] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/08/2023]
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder characterized by high blood glucose and is associated with high morbidity and mortality among the diabetic population. Uncontrolled chronic hyperglycaemia causes increased formation and accumulation of different oxidative and nitrosative stress markers, resulting in microvascular and macrovascular complications, which might seriously affect the quality of a patient's life. Conventional treatment strategies are confined to controlling blood glucose by regulating the insulin level and are not involved in attenuating the life-threatening complications of diabetes mellitus. Thus, there is an unmet need to develop a viable treatment strategy that could target the multi-etiological factors involved in the pathogenesis of diabetic complications. Stem cell therapy, a regenerative medicine approach, has been investigated in diabetic complications owing to their unique characteristic features of self-renewal, multilineage differentiation and regeneration potential. The present review is focused on potential therapeutic applications of stem cells in the treatment of microvascular diabetic complications such as nephropathy, retinopathy, and polyneuropathy.
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Affiliation(s)
- Avinash S Poojari
- Shobhabhen Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India
| | - Sarika Wairkar
- Shobhabhen Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India
| | - Yogesh A Kulkarni
- Shobhabhen Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, India.
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Chen R, Xu S, Ding Y, Li L, Huang C, Bao M, Li S, Wang Q. Dissecting causal associations of type 2 diabetes with 111 types of ocular conditions: a Mendelian randomization study. Front Endocrinol (Lausanne) 2023; 14:1307468. [PMID: 38075077 PMCID: PMC10703475 DOI: 10.3389/fendo.2023.1307468] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 10/27/2023] [Indexed: 12/18/2023] Open
Abstract
Background Despite the well-established findings of a higher incidence of retina-related eye diseases in patients with diabetes, there is less investigation into the causal relationship between diabetes and non-retinal eye conditions, such as age-related cataracts and glaucoma. Methods We performed Mendelian randomization (MR) analysis to examine the causal relationship between type 2 diabetes mellitus (T2DM) and 111 ocular diseases. We employed a set of 184 single nucleotide polymorphisms (SNPs) that reached genome-wide significance as instrumental variables (IVs). The primary analysis utilized the inverse variance-weighted (IVW) method, with MR-Egger and weighted median (WM) methods serving as supplementary analyses. Results The results revealed suggestive positive causal relationships between T2DM and various ocular conditions, including "Senile cataract" (OR= 1.07; 95% CI: 1.03, 1.11; P=7.77×10-4), "Glaucoma" (OR= 1.08; 95% CI: 1.02, 1.13; P=4.81×10-3), and "Disorders of optic nerve and visual pathways" (OR= 1.10; 95% CI: 0.99, 1.23; P=7.01×10-2). Conclusion Our evidence supports a causal relationship between T2DM and specific ocular disorders. This provides a basis for further research on the importance of T2DM management and prevention strategies in maintaining ocular health.
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Affiliation(s)
- Rumeng Chen
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Shuling Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Yining Ding
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Leyang Li
- Department of Endocrinology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chunxia Huang
- School of Stomatology, Changsha Medical University, Changsha, China
| | - Meihua Bao
- The Hunan Provincial Key Laboratory of the TCM Agricultural Biogenomics, Changsha Medical University, Changsha, China
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, School of Pharmaceutical Science, Changsha Medical University, Changsha, China
| | - Sen Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Qiuhong Wang
- Department of Endocrinology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Guo Z, Ma X, Zhang RX, Yan H. Oxidative stress, epigenetic regulation and pathological processes of lens epithelial cells underlying diabetic cataract. ADVANCES IN OPHTHALMOLOGY PRACTICE AND RESEARCH 2023; 3:180-186. [PMID: 38106550 PMCID: PMC10724013 DOI: 10.1016/j.aopr.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/11/2023] [Accepted: 10/04/2023] [Indexed: 12/19/2023]
Abstract
Background Cataract is a blinding disease worldwide. It is an age-related disease that mainly occurs in people over 65 years old. Cataract is also prevalent in patients with diabetes mellites (DM). The pathological mechanisms underlying diabetic cataract (DC) are more complex than that of age-related cataract. Studies have identified that polyol pathway, advanced glycation end products (AGEs) and oxidative stress are the primary pathogenesis of DC. In recent years, molecular-level regulations and pathological processes of lens epithelial cells (LECs) have been confirmed to play roles in the initiation and progression of DC. A comprehensive understanding and elucidation of how chronic hyperglycemia drives molecular-level regulations and cytopathological processes in the lens will shed lights on the prevention, delay and treatment of DC. Main text Excessive glucose in the lens enhances polyol pathway and AGEs formation. Polyol pathway causes imbalance in the ratio of NADPH/NADP+ and NADH/NAD+. Decrease in NADPH/NADP+ ratio compromises antioxidant enzymes, while increase in NADH/NAD+ ratio promotes reactive oxygen species (ROS) overproduction in mitochondria, resulting in oxidative stress. Oxidative stress in the lens causes oxidation of DNA, proteins and lipids, leading to abnormalities in their structure and functions. Glycation of proteins by AGEs decreases solubility of proteins. High glucose triggered epigenetic regulations directly or indirectly affect expressions of genes and proteins in LECs. Changes in autophagic activity, increases in fibrosis and apoptosis of LECs destroy the morphological structure and physiological functions of the lens epithelium, disrupting lens homeostasis. Conclusions In both diabetic animal models and diabetics, oxidative stress plays crucial roles in the formation of cataract. Epigenetic regulations, include lncRNA, circRNA, microRNA, methylation of RNA and DNA, histone acetylation and pathological processes, include autophagy, fibrosis and apoptosis of LECs also involved in DC.
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Affiliation(s)
- Zaoxia Guo
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Xiaopan Ma
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
| | - Rui Xue Zhang
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Hong Yan
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi, China
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, China
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Dai Y, Zhou S, Qiao L, Peng Z, Zhao J, Xu D, Wu C, Li M, Zeng X, Wang Q. Non-apoptotic programmed cell deaths in diabetic pulmonary dysfunction: the new side of advanced glycation end products. Front Endocrinol (Lausanne) 2023; 14:1126661. [PMID: 37964954 PMCID: PMC10641270 DOI: 10.3389/fendo.2023.1126661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 09/26/2023] [Indexed: 11/16/2023] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder that affects multiple organs and systems, including the pulmonary system. Pulmonary dysfunction in DM patients has been observed and studied for years, but the underlying mechanisms have not been fully understood. In addition to traditional mechanisms such as the production and accumulation of advanced glycation end products (AGEs), angiopathy, tissue glycation, oxidative stress, and systemic inflammation, recent studies have focused on programmed cell deaths (PCDs), especially the non-apoptotic ones, in diabetic pulmonary dysfunction. Non-apoptotic PCDs (NAPCDs) including autophagic cell death, necroptosis, pyroptosis, ferroptosis, and copper-induced cell death have been found to have certain correlations with diabetes and relevant complications. The AGE-AGE receptor (RAGE) axis not only plays an important role in the traditional pathogenesis of diabetes lung disease but also plays an important role in non-apoptotic cell death. In this review, we summarize novel studies about the roles of non-apoptotic PCDs in diabetic pulmonary dysfunction and focus on their interactions with the AGE-RAGE axis.
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Affiliation(s)
- Yimin Dai
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Shuang Zhou
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Lin Qiao
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Zhao Peng
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Jiuliang Zhao
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Dong Xu
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chanyuan Wu
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Mengtao Li
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Xiaofeng Zeng
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, Chinese Academy of Medical Sciences and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science and Technology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital (PUMCH), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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10
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Khan R, Naseem I. Antiglycation and antioxidant potential of coumaric acid isomers: a comparative in-vitro study. J Biomol Struct Dyn 2023:1-15. [PMID: 37850430 DOI: 10.1080/07391102.2023.2267699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 09/04/2023] [Indexed: 10/19/2023]
Abstract
Advanced glycation end products (AGEs) are the product of non-enzymatic glycation of serum proteins. AGEs increase reactive oxygen species (ROS) formation, which leads to diabetic complications. Phytochemicals exhibit lesser side effects as compared to conventional therapy. In this study, three isomers of coumaric acid (ortho, meta, para) were used to deduce the better one in terms of reducing diabetic complications. For this purpose, human serum albumin (HSA) was incubated with glucose in the absence and presence of isomers for 28 days. To avoid any growth, NaN3 was added and temperature was kept constant throughout the incubation period. Studies like fluorescence, circular dichroism spectroscopy, fructosamine analysis, free lysine estimation, free thiol group estimation were done. To investigate the ROS production, fluorescence microscopy of isolated lymphocytes using DAPI and dichloro-dihydro-fluorescein diacetate were performed. Molecular docking and molecular dynamic simulations (root-mean-square deviation, root-mean-square fluctuations, radius of gyration and solvent-accessible surface area) of HSA and peroxisome proliferator activated receptor (PPAR) alpha and gamma were also done. It was observed that in glycated protein samples, the level of absorbance, fluorescence, fructosamine and carbonyl group increased along with the loss of secondary structure, free lysine and thiol group. These parameters were found gradually recovered in treated samples. ROS production and apoptosis were found to be reduced in lymphocytes treated with p-Coumaric acid (pCA)-treated protein samples as compared to lymphocyte treated with glycated protein. Computational modelling suggested a stable complex formation of HSA and PPARs with pCA. Results with pCA at 200 µM were consistently better than other two isomers. Our next step is to evaluate this study in rats.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rizwan Khan
- Department of Biochemistry, Life Sciences, Aligarh Muslim University, Aligarh, UP, India
| | - Imrana Naseem
- Department of Biochemistry, Life Sciences, Aligarh Muslim University, Aligarh, UP, India
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11
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Shaaban AA, Khalaf EM, Hazem SH, Shaker ME, Shata A, Nouh NA, Jamil L, Hafez MM, El-Baz AM. WITHDRAWN: Vinpocetine and Lactobacillus improve fatty liver in rats via modulating the oxidative stress, inflammation, adiponectin and gut microbiome. Life Sci 2023; 331:121931. [PMID: 37442416 DOI: 10.1016/j.lfs.2023.121931] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 05/17/2023] [Accepted: 07/09/2023] [Indexed: 07/15/2023]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal.
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Affiliation(s)
- Ahmed A Shaaban
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt; Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| | - Eman M Khalaf
- Department of Microbiology and Immunology, Faculty of Pharmacy, Damanhour University, Damanhour, 22511, Egypt
| | - Sara H Hazem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
| | - Mohamed E Shaker
- Department of Pharmacology, College of Pharmacy, Jouf University, Aljouf, Sakaka, 72341, Saudi Arabia.
| | - Ahmed Shata
- Department of Clinical Pharmacology, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt; Department of Clinical Pharmacy, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
| | - Nehal A Nouh
- Department of Microbiology, Program Medicine, Batterjee Medical College, Jeddah, 6231, Saudi Arabia; Inpatient Pharmacy, Mansoura University Hospital, Mansoura, 35516, Egypt
| | - Lubna Jamil
- Department of Histology, Faculty of Medicine, 6 October University (O6U), Egypt
| | - Mohamed M Hafez
- Biochemistry Department, Faculty of Pharmacy, Ahram Canadian University, Egypt
| | - Ahmed M El-Baz
- Department of Microbiology and Biotechnology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt
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12
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Wu X, Mu L, Dong Z, Wu J, Zhang S, Su J, Zhang Y. Hu-Zhang Qing-Mai Formulation anti-oxidative stress alleviates diabetic retinopathy: Network pharmacology analysis and in vitro experiment. Medicine (Baltimore) 2023; 102:e35034. [PMID: 37682156 PMCID: PMC10489428 DOI: 10.1097/md.0000000000035034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 08/10/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND In this study, the potential mechanism of the Hu-Zhang Qing-Mai Formulation (HZQMF) on diabetic retinopathy (DR) in inhibiting oxidative stress was explored through network pharmacology analysis and in vitro experiments. METHODS The Traditional Chinese Medicine Systematic Pharmacology Analysis Platform was used to retrieve the active pharmaceutical ingredients and targets of HZQMF. DR-related genes and oxidative stress-related genes were obtained from PharmGKB, TTD, OMIM, GeneCards, and Drugbank. STRING was used to construct a protein-protein interaction network to screen core targets. Gene ontology and Kyoto encyclopedia of genes and genomes enrichment analyses were performed using R 4.0.3. Network topology analysis was carried out using Cytoscape 3.8.2. Finally, we looked into how well the main API protected human retinal pigment epithelial cells from damage brought on by hydrogen peroxide (H2O2). RESULTS Quercetin (Que) was identified as the primary API of HZQMF through network pharmacology analysis, while JUN, MAPK1, and STAT3 were identified as the primary hub genes. Kyoto encyclopedia of genes and genomes enrichment analysis showed that the AGE-RAGE signaling pathway may be crucial to the therapeutic process. In vitro experiments confirmed that Que increased cell vitality and inhibited apoptosis. CONCLUSION Que might significantly reduce H2O2-induced ARPE-19 cell injury by inhibiting apoptosis-related genes of the AGE-RAGE pathway (JUN, MAPK1, STAT3). This study lays the foundation for further research on HZQMF in treating DR.
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Affiliation(s)
- Xiaoyu Wu
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lin Mu
- Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Zhiguo Dong
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiajun Wu
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuyan Zhang
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing Su
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yinjian Zhang
- Department of Ophthalmology, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Haydinger CD, Oliver GF, Ashander LM, Smith JR. Oxidative Stress and Its Regulation in Diabetic Retinopathy. Antioxidants (Basel) 2023; 12:1649. [PMID: 37627644 PMCID: PMC10451779 DOI: 10.3390/antiox12081649] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Diabetic retinopathy is the retinal disease associated with hyperglycemia in patients who suffer from type 1 or type 2 diabetes. It includes maculopathy, involving the central retina and characterized by ischemia and/or edema, and peripheral retinopathy that progresses to a proliferative stage with neovascularization. Approximately 10% of the global population is estimated to suffer from diabetes, and around one in 5 of these individuals have diabetic retinopathy. One of the major effects of hyperglycemia is oxidative stress, the pathological state in which elevated production of reactive oxygen species damages tissues, cells, and macromolecules. The retina is relatively prone to oxidative stress due to its high metabolic activity. This review provides a summary of the role of oxidative stress in diabetic retinopathy, including a description of the retinal cell players and the molecular mechanisms. It discusses pathological processes, including the formation and effects of advanced glycation end-products, the impact of metabolic memory, and involvements of non-coding RNA. The opportunities for the therapeutic blockade of oxidative stress in diabetic retinopathy are also considered.
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Affiliation(s)
| | | | | | - Justine R. Smith
- College of Medicine and Public Health, Flinders University, Adelaide, SA 5042, Australia; (C.D.H.); (G.F.O.); (L.M.A.)
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14
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Accipe L, Abadie A, Neviere R, Bercion S. Antioxidant Activities of Natural Compounds from Caribbean Plants to Enhance Diabetic Wound Healing. Antioxidants (Basel) 2023; 12:antiox12051079. [PMID: 37237945 DOI: 10.3390/antiox12051079] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/23/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Diabetic wound healing is a global medical challenge. Several studies showed that delayed healing in diabetic patients is multifactorial. Nevertheless, there is evidence that excessive production of ROS and impaired ROS detoxification in diabetes are the main cause of chronic wounds. Indeed, increased ROS promotes the expression and activity of metalloproteinase, resulting in a high proteolytic state in the wound with significant destruction of the extracellular matrix, which leads to a stop in the repair process. In addition, ROS accumulation increases NLRP3 inflammasome activation and macrophage hyperpolarization in the M1 pro-inflammatory phenotype. Oxidative stress increases the activation of NETosis. This leads to an elevated pro-inflammatory state in the wound and prevents the resolution of inflammation, an essential step for wound healing. The use of medicinal plants and natural compounds can improve diabetic wound healing by directly targeting oxidative stress and the transcription factor Nrf2 involved in the antioxidant response or the mechanisms impacted by the elevation of ROS such as NLRP3 inflammasome, the polarization of macrophages, and expression or activation of metalloproteinases. This study of the diabetic pro-healing activity of nine plants found in the Caribbean highlights, more particularly, the role of five polyphenolic compounds. At the end of this review, research perspectives are presented.
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Affiliation(s)
- Laura Accipe
- UR5_3 PC2E Cardiac Pathology, Environmental Toxicity and Envenomations, Université des Antilles, BP 250, CEDEX, 97157 Pointe à Pitre, France
| | - Alisson Abadie
- UR5_3 PC2E Cardiac Pathology, Environmental Toxicity and Envenomations, Université des Antilles, BP 250, CEDEX, 97157 Pointe à Pitre, France
| | - Remi Neviere
- UR5_3 PC2E Cardiac Pathology, Environmental Toxicity and Envenomations, Université des Antilles, BP 250, CEDEX, 97157 Pointe à Pitre, France
- CHU Martinique, University Hospital of Martinique, 97200 Fort de France, France
| | - Sylvie Bercion
- UR5_3 PC2E Cardiac Pathology, Environmental Toxicity and Envenomations, Université des Antilles, BP 250, CEDEX, 97157 Pointe à Pitre, France
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15
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Abouelezz HM, Shehatou GS, Shebl AM, Salem HA. A standardized pomegranate fruit extract ameliorates thioacetamide-induced liver fibrosis in rats via AGE-RAGE-ROS signaling. Heliyon 2023; 9:e14256. [PMID: 36938469 PMCID: PMC10015255 DOI: 10.1016/j.heliyon.2023.e14256] [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: 07/29/2022] [Revised: 02/22/2023] [Accepted: 02/28/2023] [Indexed: 03/07/2023] Open
Abstract
This work aimed to investigate a possible mechanism that may mediate the hepatoprotective effects of pomegranate fruit extract (PFE) against thioacetamide (THIO)-induced liver fibrosis in rats. Male Sprague Dawley rats were randomly allocated into four groups (n = 8 each): control; PFE (150 mg/kg/day, orally); THIO (200 mg/kg, i.p, 3 times a week); and THIO and PFE-treated groups. Oral PFE treatment decreased liver/body weight ratio by 12.4%, diminished serum function levels of ALT, AST, ALP, LDH, and total bilirubin, increased serum albumin, boosted hepatic GSH (by 35.6%) and SOD (by 17.5%), and significantly reduced hepatic levels of ROS, MDA, 4-HNE, AGEs, and RAGE in THIO-fibrotic rats relative to untreated THIO group. Moreover, PFE administration downregulated the hepatic levels of profibrotic TGF-β1 (by 23.0%, P < 0.001) and TIMP-1 (by 41.5%, P < 0.001), attenuated α-SMA protein expression, decreased serum HA levels (by 41.3%), and reduced the hepatic levels of the fibrosis markers hydroxyproline (by 26.0%, P < 0.001), collagen type IV (by 44.3%, P < 0.001) and laminin (by 43.4%, P < 0.001) compared to the untreated THIO group. The histopathological examination has corroborated these findings, where PFE decreased hepatic nodule incidence, attenuated portal necroinflammation and reduced extent of fibrosis. These findings may suggest that oral PFE administration could slow the progression of hepatic fibrogenesis via reducing hepatic levels of AGEs, RAGE, ROS, TGF-β1, and TIMP-1.
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Affiliation(s)
- Hadeer M. Abouelezz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
- Corresponding author.
| | - 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, Gamasa City, Egypt
| | - Abdelhadi M. Shebl
- Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Hatem A. Salem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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16
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Ramlagan P, Issa MY, Rondeau P, Bourdon E, Bahorun T, Farag MA, Neergheen VS. Metabolite Profiling of Antioxidant Rich Fractions of Punica granatum L. Mesocarp and CD36 Expression Regulation. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2023; 42:36-54. [PMID: 34686109 DOI: 10.1080/07315724.2021.1978349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE It was aimed at determining which polyphenolic compound(s) in pomegranate mesocarp extract (PME) is liable for the antioxidant, anti-glycation and anti-CD36 activities. METHODS The PME was fractionated using liquid-liquid extraction method. The fractions were tested for their polyphenolic content, antioxidant potency, anti-glycation activity and anti-CD36 potential. The metabolite compositions of PME and derived fractions were investigated in an untargeted manner using metabolomics in relation to its antioxidant and anti-glycation activities. RESULTS The ethyl acetate and n-butanol fractions of the pomegranate mesocarp demonstrated highest antioxidant and anti-glycation potencies. These fractions, represented by gallic and ellagic acids monomers, were enriched in tannins and phenolic acids. Orthogonal partial least squares discriminate analysis (OPLS-DA) modeling of ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) metabolite profiles from the different pomegranate mesocarp fractions indicated that gallic and ellagic acids were potential contributors to the antioxidant and anti-glycation effects of the pomegranate mesocarp. At cellular level, the polyphenolic-rich crude extract as well as the ethyl acetate, n-butanol and aqueous residual fractions suppressed the protein expression of CD36. The anti-CD36 activity of these extracts and fractions was attributed to the presence of punicalagin, the ellagitannins that occurred in equal amount in the different fractions. CONCLUSION This work demonstrated the protective effect of the non-edible part of the pomegranate fruit and showed that gallic and ellagic acids account for the antioxidant and anti-glycation activities while punicalagin is liable for the anti-CD36 activity of PME.
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Affiliation(s)
- Piteesha Ramlagan
- Biopharmaceutical Unit, Centre for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius.,Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius
| | - Marwa Yousry Issa
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt
| | - Philippe Rondeau
- Université de La Réunion, INSERM, UMR 1188 Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Emmanuel Bourdon
- Université de La Réunion, INSERM, UMR 1188 Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI), Saint-Denis de La Réunion, France
| | - Theeshan Bahorun
- Biopharmaceutical Unit, Centre for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius.,Department of Biosciences and Ocean Studies, Faculty of Science, University of Mauritius, Réduit, Mauritius.,Mauritius Research Innovation Council, Ebène, Mauritius
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt.,Chemistry Department, School of Sciences & Engineering, The American University in Cairo, New Cairo, Egypt
| | - Vidushi S Neergheen
- Biopharmaceutical Unit, Centre for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius
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Abstract
Post-surgical adhesions are a major complication leading to organ dysfunctions, pain, intestinal obstruction, and infertility. The incidence of post-surgical adhesion is really high. The factors involved in the pathogenesis of post-surgical fibrosis, are largely unknown, for example why two patients with similar abdominal operation have a different risks of adhesion severity? High secretion of pro-inflammatory cytokines and growth factors, includes tumour necrosis factor α (TNF-α), interleukin 6 (IL6), and transforming growth factor β (TGF-β) by persistent recruitment of immune cells and the inappropriate proliferated fibroblast/mesothelial cells can stimulate signalling pathways particularly TGF-β leads to the up-regulation of some pro-fibrotic genes that impair fibrinolytic activity and promote extracellular matrix (ECM) accumulation. In this review, we focus on the role of diabetes and hyperglycaemia on post-surgical fibrosis, including the molecular mechanisms affected by hyperglycaemia that cause inflammation, oxidative stress, and increase the expression of pro-fibrotic molecules.
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Affiliation(s)
- Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Brighton, UK
| | - Seyed Mahdi Hassanian
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad-Hassan Arjmand
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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18
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Kang Q, Dai H, Jiang S, Yu L. Advanced glycation end products in diabetic retinopathy and phytochemical therapy. Front Nutr 2022; 9:1037186. [PMID: 36466410 PMCID: PMC9716030 DOI: 10.3389/fnut.2022.1037186] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/31/2022] [Indexed: 10/12/2023] Open
Abstract
Advanced glycation end products (AGEs) are generated by the nonenzymatic glycation of proteins or lipids. Diabetic retinopathy (DR) is one common complication in patients with diabetes. The accumulation of AGEs in retinal cells is strongly associated with the development of DR. AGEs can induce the breakdown of redox balance and then cause oxidative stress in retinal cells, exerting cytopathic effects in the progression of DR. The interaction between AGEs and the receptor for AGE (RAGE) is involved in multiple cellular pathological alterations in the retina. This review is to elucidate the pathogenetic roles of AGEs in the progression of DR, including metabolic abnormalities, lipid peroxidation, structural and functional alterations, and neurodegeneration. In addition, disorders associated with AGEs can be used as potential therapeutic targets to explore effective and safe treatments for DR. In this review, we have also introduced antioxidant phytochemicals as potential therapeutic strategies for the treatment of DR.
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Affiliation(s)
- Qingzheng Kang
- Department of Hematology and Oncology, International Cancer Center, Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University Health Science Center, Shenzhen University, Shenzhen, China
| | - Haiyu Dai
- School of Medicine, Shenzhen University, Shenzhen, China
| | - Suwei Jiang
- School of Medicine, Shenzhen University, Shenzhen, China
| | - Li Yu
- Department of Hematology and Oncology, International Cancer Center, Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University Health Science Center, Shenzhen University, Shenzhen, China
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19
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Adebayo AA, Oboh G, Ademosun AO. Almond and date fruits enhance antioxidant status and have erectogenic effect: Evidence from in vitro and in vivo studies. J Food Biochem 2022; 46:e14255. [PMID: 35644948 DOI: 10.1111/jfbc.14255] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/30/2022] [Accepted: 04/27/2022] [Indexed: 12/29/2022]
Abstract
This study was designed to investigate the efficacies of almond and date fruits on redox imbalance and enzymes relevant to the pathogenesis of erectile dysfunction. The total polyphenol contents, ferric reducing antioxidant power, and vitamin C content were determined spectrophotometrically. Phenolic and amino acid compositions were quantified using HPLC; meanwhile, the antioxidant activities were determined using DPPH, ABTS, FRAP, and metal chelation. Also, the effect of almond and date extract on advanced glycated end-products (AGEs) formation, arginase, and phosphodiesterase-5 activities was evaluated in vitro. Thereafter, the influence of almond and date supplemented diets on copulatory behaviors in normal rats was assessed, followed by arginase and phosphodiesterase-5 activities determination in vivo. The results revealed that date and almond extracts exerted antioxidant properties, prevented AGEs formation in vitro, and inhibited arginase and phosphodiesterase-5 activities in vitro and in vivo. Besides, almond and date supplemented diets significantly enhance sexual behaviors in normal rats when compared with the control. Among the active compounds identified were gallic acid, ellagic acid, quercetin, and rutin. All the 20 basic amino acids were identified. Given the aforementioned, date and almond could represent a reliable source of functional foods highly rich in compounds with antioxidant activity, and arginase and PDE-5 inhibitory properties. PRACTICAL APPLICATIONS: Fruits are essential part of the human diet that furnish the body with important nutrients. Despite the crucial roles of fruits in human diets, some fruits like almond and date are underutilized among Nigerians. However, we characterized the important compounds present in these fruits and how their presence contributes to the biological activities of the fruits. Finally, we relate the chemical composition and the observed biological activities to the overall health and wellness of the consumers.
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Affiliation(s)
- Adeniyi A Adebayo
- Functional Foods and Nutraceutical Research Unit, Biochemistry Department, Federal University of Technology, Akure, Nigeria.,Chemical Sciences Department (Biochemistry Option), Joseph Ayo Babalola University, Ikeji-Arakeji, Nigeria
| | - Ganiyu Oboh
- Functional Foods and Nutraceutical Research Unit, Biochemistry Department, Federal University of Technology, Akure, Nigeria
| | - Ayokunle O Ademosun
- Functional Foods and Nutraceutical Research Unit, Biochemistry Department, Federal University of Technology, Akure, Nigeria
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20
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Zeng L, Liu J, Zhang T, Liu Y, Liao L, Chen X, Dong S. Study on the protective mechanism of dexmedetomidine on the liver of perioperative diabetic patients: A randomized controlled trial. Medicine (Baltimore) 2022; 101:e30899. [PMID: 36254014 PMCID: PMC9575753 DOI: 10.1097/md.0000000000030899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Although several studies have reported that dexmedetomidine is a highly selective α2-adrenergic receptor agonist that protects liver function in perioperative patients by inhibiting oxidative stress (OS) and inflammatory response, patients with type 2 diabetes mellitus (T2DM) have not been included in the previous studies. The purpose of this study was to investigate the effects of perioperative low-dose dexmedetomidine on perioperative liver function in T2DM patients. METHODS This was a single-center, placebo-controlled randomized trial. Fifty-four T2DM patients scheduled for debridement of lower extremity ulcers were included in this study and randomly divided into 2 groups (n = 27 per group): the dexmedetomidine group (DEX group) and the control group (CON group). Continuous intravenous infusion of dexmedetomidine (DEX group) or normal saline (CON group) was administered from the completion of monitoring to the end of surgery. All participants received femoral and sciatic nerve block with 0.33% ropivacaine. The main result was the activity of liver enzymes (AST, ALT) reflecting liver function. The secondary results included variables reflecting blood glucose (Glu), blood lipids (TG, HDL, LDL, total cholesterol), biomarkers of OS (MDA, SOD), and systemic inflammatory response (TNF-α, IL-6). RESULTS Compared with CON group, DEX group exhibited a reduction in hemodynamic parameters, Glu, systemic inflammatory response, and liver injury indicators. OS response MDA activity was lower in DEX group than in CON group, while SOD was higher than that in CON group. The variables reflecting lipid metabolism function showed no differences between the groups. CONCLUSION SUBSECTIONS Dexmedetomidine administered perioperatively can reduce Glu levels and protect the liver by attenuating OS injury and inflammatory response in T2DM patients without any potential risk.
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Affiliation(s)
- Lin Zeng
- Shifang People’s Hospital, Shifang, Sichuan Province, China
| | - Juan Liu
- Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Tianyao Zhang
- Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Yusong Liu
- Shifang People’s Hospital, Shifang, Sichuan Province, China
| | - Lumiu Liao
- Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Xuelian Chen
- Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Shuhua Dong
- Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
- * Correspondence: Shuhua Dong, Department of Anesthesiology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China (e-mail: dong. )
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21
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Krasnodębski M, Morawski M, Borkowski J, Grąt K, Stypułkowski J, Skalski M, Zhylko A, Krawczyk M, Grąt M. Skin Autofluorescence Measurement as Initial Assessment of Hepatic Parenchyma Quality in Patients Undergoing Liver Resection. J Clin Med 2022; 11:jcm11185341. [PMID: 36142988 PMCID: PMC9503381 DOI: 10.3390/jcm11185341] [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: 08/10/2022] [Revised: 09/01/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Skin autofluorescence (SAF) can detect advanced glycation end products (AGEs) that accumulate in tissues over time. AGEs reflect patients’ general health, and their pathological accumulation has been associated with various diseases. This study aimed to determine whether its measurements can correlate with the liver parenchyma quality. This prospective study included 186 patients who underwent liver resections. Liver fibrosis and/or steatosis > 10% were found in almost 30% of the patients. ROC analysis for SAF revealed the optimal cutoff point of 2.4 AU as an independent predictor for macrovesicular steatosis ≥ 10% with an AUC of 0.629 (95% CI 0.538−0.721, p = 0.006), 59.9% sensitivity, 62.4% specificity, and positive (PPV) and negative (NPV) predictive values of 45.7% and 74.1%, respectively. The optimal cutoff point for liver fibrosis was 2.3 AU with an AUC of 0.613 (95% CI 0.519−0.708, p = 0.018), 67.3% sensitivity, 55.2% specificity, and PPV and NPV of 37.1% and 81.2%, respectively. In the multivariable logistic regression model, SAF ≥ 2.4 AU (OR 2.16; 95% CI 1.05−4.43; p = 0.036) and BMI (OR 1.21; 95% CI 1.10−1.33, p < 0.001) were independent predictors of macrovesicular steatosis ≥ 10%. SAF may enhance the available non-invasive methods of detecting hepatic steatosis and fibrosis in patients prior to liver resection.
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Affiliation(s)
- Maciej Krasnodębski
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
- Correspondence: ; Tel.: +48-22-599-25-45
| | - Marcin Morawski
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Jan Borkowski
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Karolina Grąt
- Second Department of Clinical Radiology, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Jan Stypułkowski
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Michał Skalski
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Andriy Zhylko
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Marek Krawczyk
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Michał Grąt
- Department of General, Transplant, and Liver Surgery, Medical University of Warsaw, 02-097 Warsaw, Poland
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22
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Mouanness M, Nava H, Dagher C, Merhi Z. Contribution of Advanced Glycation End Products to PCOS Key Elements: A Narrative Review. Nutrients 2022; 14:nu14173578. [PMID: 36079834 PMCID: PMC9460172 DOI: 10.3390/nu14173578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/23/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
In the last decade, data has suggested that dietary advanced glycation end products (AGEs) play an important role in both reproductive and metabolic dysfunctions associated with polycystic ovary syndrome (PCOS). AGEs are highly reactive molecules that are formed by the non-enzymatic glycation process between reducing sugars and proteins, lipids, or nucleic acids. They can be formed endogenously under normal metabolic conditions or under abnormal situations such as diabetes, renal disease, and other inflammatory disorders. Bodily AGEs can also accumulate from exogenous dietary sources particularly when ingested food is cooked and processed under high-temperature conditions, such as frying, baking, or grilling. Women with PCOS have elevated levels of serum AGEs that are associated with insulin resistance and obesity and that leads to a high deposition of AGEs in the ovarian tissue causing anovulation and hyperandrogenism. This review will describe new data relevant to the role of AGEs in several key elements of PCOS phenotype and pathophysiology. Those elements include ovarian dysfunction, hyperandrogenemia, insulin resistance, and obesity. The literature findings to date suggest that targeting AGEs and their cellular actions could represent a novel approach to treating PCOS symptoms.
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Affiliation(s)
| | - Henry Nava
- Rejuvenating Fertility Center, New York, NY 10019, USA
| | - Christelle Dagher
- Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut P.O. Box 100, Lebanon
| | - Zaher Merhi
- Rejuvenating Fertility Center, New York, NY 10019, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
- Correspondence: ; Tel.: +1-(203)-557-9696
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23
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Dawood M, Younus ZM, Alnori M, Mahmood S. The Biological Role of Advanced Glycation End Products in the Development and Progression of Colorectal Cancer. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.9926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
“Colorectal cancer” (CRC) is one of the most prevalent cancers, posing a scientific challenge and serving as a model for investigating the molecular pathways underlying its development. “Advanced glycation end products” (AGEs) have drawn interest in this context. The buildup of these diverse, chemically complex groups, which are formed by a “non-enzymatic interaction” between reducing sugar and a range of macromolecules, significantly increases “inflammation and oxidative stress” in the body, which has long been associated to cancer formation. The traditional pathways that promote AGE formation, as well as the significance of AGEs’ interaction with the receptor for “advanced glycation end products” (RAGE) and other means involved in CRC initiation and progression, are discussed in this review.
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Zhao W, Meng X, Liang J. Analysis of circRNA-mRNA expression profiles and functional enrichment in diabetes mellitus based on high throughput sequencing. Int Wound J 2022; 19:1253-1262. [PMID: 35504843 PMCID: PMC9284653 DOI: 10.1111/iwj.13838] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 12/26/2022] Open
Abstract
To study the pathogenesis of diabetes mellitus (DM) and identify new biomarkers, high‐throughput RNA sequencing provides a technical means to explore the regulatory network of MD gene expression. To better elucidate the genetic basis of DM, we analysed the circRNA and mRNA expression profiles in serum samples from diabetic patients. The circRNAs and mRNAs with abnormal expression in the DM group and non‐diabetic group (NDM) were classified by RNA sequencing and differential expression analysis. The circRNA‐miRNA‐mRNA regulatory network reveals the mechanism by which competitive endogenous RNAs (ceRNAs) regulate gene expression. The biological functions and interactions of circRNA and mRNA were analysed by gene ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Differential expression analysis showed that 441 circRNAs (366 up‐regulated, 75 down‐regulated) and 683 mRNAs (354 up‐regulated, 329 down‐regulated) were significantly differentially expressed in the DM group compared with the NDM group. Screening of the differential genes at the nodes of the interaction network showed that a single circRNA could interact with multiple miRNAs and then jointly regulate more mRNAs. In addition, the expressions of circRNA CNOT6 and AXIN1 as well as mRNA STAT3, MYD88, and B2M were associated with the progression of diabetes. Enrichment pathway analysis indicated that differentially expressed circRNA and mRNA may participate in Nod‐like receptor signalling pathway, insulin signalling pathway, sphinolipid metabolism pathway, and ribosome pathway, and play a role in the pathogenesis of diabetes. This study provides a theoretical basis for elucidating the molecular mechanism of DM occurrence and development at circRNA and mRNA levels.
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Affiliation(s)
- Wanni Zhao
- Department of Gastrointestinal Surgery/Clinical Nutrition, Key Laboratory of Cancer FSMP for State Market Regulation, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.,Department of General Surgery, Beijing Hospital, National Center of Gerontology, Beijing, China.,Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xue Meng
- Department of Neurology, Peking University International Hospital, Beijing, China
| | - Jianfeng Liang
- Department of Neurosurgery, Peking University International Hospital, Beijing, China
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25
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Ge C, Tan J, Lou D, Zhu L, Zhong Z, Dai X, Sun Y, Kuang Q, Zhao J, Wang L, Liu J, Wang B, Xu M. Mulberrin confers protection against hepatic fibrosis by Trim31/Nrf2 signaling. Redox Biol 2022; 51:102274. [PMID: 35240537 PMCID: PMC8891817 DOI: 10.1016/j.redox.2022.102274] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 02/06/2023] Open
Abstract
Mulberrin (Mul) is a key component of the traditional Chinese medicine Romulus Mori with various biological functions. However, the effects of Mul on liver fibrosis have not been addressed, and thus were investigated in our present study, as well as the underlying mechanisms. Here, we found that Mul administration significantly ameliorated carbon tetrachloride (CCl4)-induced liver injury and dysfunction in mice. Furthermore, CCl4-triggerd collagen deposition and liver fibrosis were remarkably attenuated in mice with Mul supplementation through suppressing transforming growth factor β1 (TGF-β1)/SMAD2/3 signaling pathway. Additionally, Mul treatments strongly restrained the hepatic inflammation in CCl4-challenged mice via blocking nuclear factor-κB (NF-κB) signaling. Importantly, we found that Mul markedly increased liver TRIM31 expression in CCl4-treated mice, accompanied with the inactivation of NOD-like receptor protein 3 (NLRP3) inflammasome. CCl4-triggered hepatic oxidative stress was also efficiently mitigated by Mul consumption via improving nuclear factor E2-related factor 2 (Nrf2) activation. Our in vitro studies confirmed that Mul reduced the activation of human and mouse primary hepatic stellate cells (HSCs) stimulated by TGF-β1. Consistently, Mul remarkably retarded the inflammatory response and reactive oxygen species (ROS) accumulation both in human and murine hepatocytes. More importantly, by using hepatocyte-specific TRIM31 knockout mice (TRIM31Hep-cKO) and mouse primary hepatocytes with Nrf2-knockout (Nrf2KO), we identified that the anti-fibrotic and hepatic protective effects of Mul were TRIM31/Nrf2 signaling-dependent, relieving HSCs activation and liver fibrosis. Therefore, Mul-ameliorated hepatocyte injury contributed to the suppression of HSCs activation by improving TRIM31/Nrf2 axis, thus providing a novel therapeutic strategy for hepatic fibrosis treatment.
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Affiliation(s)
- Chenxu Ge
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Jun Tan
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China.
| | - Deshuai Lou
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Liancai Zhu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Zixuan Zhong
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Xianling Dai
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Yan Sun
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Qin Kuang
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China
| | - Junjie Zhao
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Longyan Wang
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Jin Liu
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China.
| | - Minxuan Xu
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, 400067, PR China; Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, PR China; Research Center of Brain Intellectual Promotion and Development for Children Aged 0-6 Years, Chongqing University of Education, Chongqing, 400067, PR China.
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26
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Shaker ME. The contribution of sterile inflammation to the fatty liver disease and the potential therapies. Biomed Pharmacother 2022; 148:112789. [PMID: 35272137 DOI: 10.1016/j.biopha.2022.112789] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 11/02/2022] Open
Abstract
Hepatic inflammation is prevalent in several metabolic liver diseases. Recent scientific advances about the pathogenesis of metabolic liver diseases showed an emerging role of several damage-associated molecular patterns (DAMPs), including DNA, high-mobility group box 1 (HMGB1), ATP and uric acid. For these DAMPs to induce inflammation, they should stimulate pattern recognition receptors (PRRs), which are located in the hepatic immune cells like resident Kupffer cells, infiltrated neutrophils, monocytes or dendritic cells. As a consequence, proinflammatory cytokines like interleukins (ILs)-1β and 18 alongside tumor necrosis factor (TNF)-α are overproduced and released, leading to pronounced hepatic inflammation and cellular death. This review highlights the contribution of these DAMPs and PRRs in the settings of alcoholic and nonalcoholic steatohepatitis. The review also summarizes the therapeutic usefulness of targeting NLR family pyrin domain containing 3 (NLRP3)-inflammasome, Toll-like receptors (TLRs) 4 and 9, IL-1 receptor (IL-1R), caspase 1, uric acid and GMP-AMP synthase/stimulator of interferon genes (cGAS/STING) in these hepatic inflammatory disorders.
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Affiliation(s)
- Mohamed E Shaker
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia.
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27
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Mouanness M, Merhi Z. Impact of Dietary Advanced Glycation End Products on Female Reproduction: Review of Potential Mechanistic Pathways. Nutrients 2022; 14:nu14050966. [PMID: 35267940 PMCID: PMC8912317 DOI: 10.3390/nu14050966] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/20/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023] Open
Abstract
Advanced glycation end products (AGEs), a heterogenous group of products formed by the reaction between protein and reducing sugars, can form endogenously due to non-enzymatic reactions or by exogenous sources such as diet where considerable increase in AGEs is observed due to the modification of food mainly by thermal processing. Recent studies have suggested that AGEs could impact, via inducing inflammation and oxidative stress, the reproductive health and fertility in both males and females. This review presents a summary of recently published data pertaining to the pathogenesis of dietary AGEs and their receptors as well as their potential impact on female reproductive health. More specifically, it will present data pertaining to dietary AGEs’ involvement in the mechanistic pathogenesis of polycystic ovary syndrome, ovarian dysfunction, as well as the AGEs’ effect perinatally on the female offspring reproduction. Understanding the mechanistic impact of dietary AGEs on female reproduction can help contribute to the development of targeted pharmacological therapies that will help curb rising female infertility.
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Affiliation(s)
- Marco Mouanness
- Rejuvenating Fertility Center, 315 W 57th Street, Suite 208, New York, NY 10019, USA;
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
| | - Zaher Merhi
- Rejuvenating Fertility Center, 315 W 57th Street, Suite 208, New York, NY 10019, USA;
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Correspondence:
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28
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Yu X, Elfimova N, Müller M, Bachurski D, Koitzsch U, Drebber U, Mahabir E, Hansen HP, Friedman SL, Klein S, Dienes HP, Hösel M, Buettner R, Trebicka J, Kondylis V, Mannaerts I, Odenthal M. Autophagy-Related Activation of Hepatic Stellate Cells Reduces Cellular miR-29a by Promoting Its Vesicular Secretion. Cell Mol Gastroenterol Hepatol 2022; 13:1701-1716. [PMID: 35219894 PMCID: PMC9046234 DOI: 10.1016/j.jcmgh.2022.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND & AIMS Liver fibrosis arises from long-term chronic liver injury, accompanied by an accelerated wound healing response with interstitial accumulation of extracellular matrix (ECM). Activated hepatic stellate cells (HSC) are the main source for ECM production. MicroRNA29a (miR-29a) is a crucial antifibrotic miRNA that is repressed during fibrosis, resulting in up-regulation of collagen synthesis. METHODS Intracellular and extracellular miRNA levels of primary and immortalized myofibroblastic HSC in response to profibrogenic stimulation by transforming growth factor β (TGFβ) or platelet-derived growth factor-BB (PDGF-BB) or upon inhibition of vesicular transport and autophagy processes were determined by quantitative polymerase chain reaction. Autophagy flux was studied by electron microscopy, flow cytometry, immunoblotting, and immunocytochemistry. Hepatic and serum miR-29a levels were quantified by using both liver tissue and serum samples from a cohort of chronic hepatitis C virus patients and a murine CCl4 induced liver fibrosis model. RESULTS In our study, we show that TGFβ and PDGF-BB resulted in decrease of intracellular miR-29a and a pronounced increase of vesicular miR-29a release into the supernatant. Strikingly, miR-29a vesicular release was accompanied by enhanced autophagic activity and up-regulation of the autophagy marker protein LC3. Moreover, autophagy inhibition strongly prevented miR-29a secretion and repressed its targets' expression such as Col1A1. Consistently, hepatic miR-29a loss and increased LC3 expression in myofibroblastic HSC were associated with increased serum miR-29a levels in CCl4-treated murine liver fibrosis and specimens of hepatitis C virus patients with chronic liver disease. CONCLUSIONS We provide evidence that activation-associated autophagy in HSC induces release of miR-29a, whereas inhibition of autophagy represses fibrogenic gene expression in part through attenuated miR-29a secretion.
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Affiliation(s)
- Xiaojie Yu
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Natalia Elfimova
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany
| | - Marion Müller
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Daniel Bachurski
- Department I of Internal Medicine, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany
| | - Ulrike Koitzsch
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Uta Drebber
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center of Integrative Oncology, University Clinic of Cologne and Bonn, Germany
| | - Esther Mahabir
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Hinrich P Hansen
- Department I of Internal Medicine, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center of Integrative Oncology, University Clinic of Cologne and Bonn, Germany
| | - Scott L Friedman
- Division of Liver Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sabine Klein
- Department of Internal Medicine I, University Hospital Frankfurt, Frankfurt, Germany
| | - Hans Peter Dienes
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany
| | - Marianna Hösel
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Reinhard Buettner
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Center of Integrative Oncology, University Clinic of Cologne and Bonn, Germany
| | - Jonel Trebicka
- Department of Internal Medicine I, University Hospital Frankfurt, Frankfurt, Germany; European Foundation for the Study of Chronic Liver Failure - EF CLIF, Barcelona, Spain
| | - Vangelis Kondylis
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Inge Mannaerts
- Liver Cell Biology Research Group, Vrije Universiteit Brussel, Brussel, Belgium.
| | - Margarete Odenthal
- Institute for Pathology, Medical Faculty and University Hospital of Cologne, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Center of Integrative Oncology, University Clinic of Cologne and Bonn, Germany.
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29
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Prevention of Protein Glycation by Nanoparticles: Potential Applications in T2DM and Associated Neurodegenerative Diseases. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-022-00954-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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30
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Omofuma OO, Peterson LL, Turner DP, Merchant AT, Zhang J, Thomson CA, Neuhouser ML, Snetselaar LG, Caan BJ, Shadyab AH, Saquib N, Banack HR, Uribarri J, Steck SE. Dietary Advanced Glycation End-Products and Mortality after Breast Cancer in the Women's Health Initiative. Cancer Epidemiol Biomarkers Prev 2021; 30:2217-2226. [PMID: 34583965 PMCID: PMC8643311 DOI: 10.1158/1055-9965.epi-21-0610] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/24/2021] [Accepted: 09/22/2021] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Advanced glycation end-products (AGE) are formed through nonenzymatic glycation of free amino groups in proteins or lipid. They are associated with inflammation and oxidative stress, and their accumulation in the body is implicated in chronic disease morbidity and mortality. We examined the association between postdiagnosis dietary Nε-carboxymethyl-lysine (CML)-AGE intake and mortality among women diagnosed with breast cancer. METHODS Postmenopausal women aged 50 to 79 years were enrolled in the Women's Health Initiative (WHI) between 1993 and 1998 and followed up until death or censoring through March 2018. We included 2,023 women diagnosed with first primary invasive breast cancer during follow-up who completed a food frequency questionnaire (FFQ) after diagnosis. Cox proportional hazards (PH) regression models estimated adjusted hazard ratios (HR) and 95% confidence intervals (CI) of association between tertiles of postdiagnosis CML-AGE intake and mortality risk from all causes, breast cancer, and cardiovascular disease. RESULTS After a median 15.1 years of follow-up, 630 deaths from all causes were reported (193 were breast cancer-related, and 129 were cardiovascular disease-related). Postdiagnosis CML-AGE intake was associated with all-cause (HRT3vsT1, 1.37; 95% CI, 1.09-1.74), breast cancer (HRT3vsT1, 1.49; 95% CI, 0.98-2.24), and cardiovascular disease (HRT3vsT1, 1.91; 95% CI, 1.09-3.32) mortality. CONCLUSIONS Higher intake of AGEs was associated with higher risk of major causes of mortality among postmenopausal women diagnosed with breast cancer. IMPACT Our findings suggest that dietary AGEs may contribute to the risk of mortality after breast cancer diagnosis. Further prospective studies examining dietary AGEs in breast cancer outcomes and intervention studies targeting dietary AGE reduction are needed to confirm our findings.
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Affiliation(s)
- Omonefe O Omofuma
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland
| | - Lindsay L Peterson
- Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | - David P Turner
- Medical University of South Carolina, Charleston, South Carolina
| | - Anwar T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - Jiajia Zhang
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - Cynthia A Thomson
- Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona
| | | | | | - Bette J Caan
- Kaiser Permanente, University of California Berkeley, Oakland, California
| | - Aladdin H Shadyab
- Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, California
| | - Nazmus Saquib
- College of Medicine, Sulaiman AlRajhi University, Saudi Arabia
| | - Hailey R Banack
- School of Public Health and Health Professions, University at Buffalo-SUNY, Buffalo, New York
| | - Jaime Uribarri
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York
| | - Susan E Steck
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina.
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De Smet V, Eysackers N, Merens V, Kazemzadeh Dastjerd M, Halder G, Verhulst S, Mannaerts I, van Grunsven LA. Initiation of hepatic stellate cell activation extends into chronic liver disease. Cell Death Dis 2021; 12:1110. [PMID: 34839349 PMCID: PMC8627507 DOI: 10.1038/s41419-021-04377-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/05/2021] [Accepted: 11/03/2021] [Indexed: 12/11/2022]
Abstract
Activated hepatic stellate cells (aHSC) are the main source of extra cellular matrix in liver fibrosis. Activation is classically divided in two phases: initiation and perpetuation. Currently, HSC-based therapeutic candidates largely focus on targeting the aHSCs in the perpetuation phase. However, the importance of HSC initiation during chronic liver disease (CLD) remains unclear. Here, we identified transcriptional programs of initiating and activated HSCs by RNA sequencing, using in vitro and in vivo mouse models of fibrosis. Importantly, we show that both programs are active in HSCs during murine and human CLD. In human cirrhotic livers, scar associated mesenchymal cells employ both transcriptional programs at the single cell level. Our results indicate that the transcriptional programs that drive the initiation of HSCs are still active in humans suffering from CLD. We conclude that molecules involved in the initiation of HSC activation, or in the maintenance of aHSCs can be considered equally important in the search for druggable targets of chronic liver disease.
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Affiliation(s)
- Vincent De Smet
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium
| | - Nathalie Eysackers
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium
| | - Vincent Merens
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium
| | | | - Georg Halder
- KU Leuven, VIB Center for Cancer Biology, Leuven, Belgium
| | - Stefaan Verhulst
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium
| | - Inge Mannaerts
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium
| | - Leo A van Grunsven
- Vrije Universiteit Brussel (VUB), Liver Cell Biology Research Group, Jette, Belgium.
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Karanikas E. Psychologically Traumatic Oxidative Stress; A Comprehensive Review of Redox Mechanisms and Related Inflammatory Implications. PSYCHOPHARMACOLOGY BULLETIN 2021; 51:65-86. [PMID: 34887600 PMCID: PMC8601764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The organism's energy requirements for homeostatic balance are covered by the redox mechanisms. Yet in case of psychologically traumatic stress, allostatic regulations activate both pro-oxidant and antioxidant molecules as well as respective components of the inflammatory system. Thus a new setpoint of dynamic interactions among redox elements is reached. Similarly, a multifaceted interplay between redox and inflammatory fields is activated with the mediation of major effector systems such as the immune system, Hypothalamic-Pituitary-Adrenal axis, kynurenine, and the glycaemic regulatory one. In case of sustained and/or intense traumatic stress the prophylactic antioxidant components are inadequate to provide the organism with neuroprotection finally culminating in Oxidative Stress and subsequently to cellular apoptosis. In parallel multiple inflammatory systems trigger and/or are triggered by the redox systems in tight fashion so that the causation sequence appears obscure. This exhaustive review aims at the comprehension of the interaction among components of the redox system as well as to the collection of disperse findings relative to the redox-inflammatory interplay in the context of traumatic stress so that new research strategies could be developed.
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Affiliation(s)
- Evangelos Karanikas
- Karanikas, Department of Psychiatry, General Military Hospital, Thessaloniki, Greece
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Kim M, Hur S, Kim KH, Cho Y, Kim K, Kim HR, Nam KT, Lim KM. A New Murine Liver Fibrosis Model Induced by Polyhexamethylene Guanidine-Phosphate. Biomol Ther (Seoul) 2021; 30:126-136. [PMID: 34580237 PMCID: PMC8902451 DOI: 10.4062/biomolther.2021.120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 11/05/2022] Open
Abstract
Liver fibrosis is part of the wound healing process to help the liver recover from the injuries caused by various liver-damaging insults. However, liver fibrosis often progresses to life-threatening cirrhosis and hepatocellular carcinoma. To overcome the limitations of current in vivo liver fibrosis models for studying the pathophysiology of liver fibrosis and establishing effective treatment strategies, we developed a new mouse model of liver fibrosis using polyhexamethylene guanidine phosphate (PHMG-p), a humidifier sterilizer known to induce lung fibrosis in humans. Male C57/BL6 mice were intraperitoneally injected with PHMG-p (0.03% and 0.1%) twice a week for 5 weeks. Subsequently, liver tissues were examined histologically and RNA-sequencing was performed to evaluate the expression of key genes and pathways affected by PHMG-p. PHMG-p injection resulted in body weight loss of ~15% and worsening of physical condition. Necropsy revealed diffuse fibrotic lesions in the liver with no effect on the lungs. Histology, collagen staining, immunohistochemistry for smooth muscle actin and collagen, and polymerase chain reaction analysis of fibrotic genes revealed that PHMG-p induced liver fibrosis in the peri-central, peri-portal, and capsule regions. RNA-sequencing revealed that PHMG-p affected several pathways associated with human liver fibrosis, especially with upregulation of lumican and IRAK3, and downregulation of GSTp1 and GSTp2, which are closely involved in liver fibrosis pathogenesis. Collectively we demonstrated that the PHMG-p-induced liver fibrosis model can be employed to study human liver fibrosis.
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Affiliation(s)
- Minjeong Kim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sumin Hur
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Kwang H Kim
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Yejin Cho
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Keunyoung Kim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Ha Ryong Kim
- College of Pharmacy, Daegu Catholic University, Daegu 38430, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
| | - Kyung-Min Lim
- College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
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34
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Xu C, Zhang W, Wang R, Tan S, Holub JM, Tang B. Versatile Gold-Coupled Te-Carbon Dots for Quantitative Monitoring and Efficient Scavenging of Superoxide Anions. Anal Chem 2021; 93:9111-9118. [PMID: 34157223 DOI: 10.1021/acs.analchem.1c00844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The superoxide anion (O2•-) is a reactive oxygen species (ROS) that functions as an important regulator of signal transduction in living systems. However, excess O2•- can cause metabolic imbalances and oxidative damage inside cells. Quantitative detection and efficient scavenging of O2•- are therefore critical for maintaining intracellular redox balance and homeostasis. In this work, a nanomaterial (Au-TeCD) composed of BSA-modified gold nanoparticles (AuNPs) complexed with tellurium-containing carbon dots (TeCDs) was constructed. The introduction of Au-TeCDs to solutions containing superoxide resulted in enhanced elimination of the anion, indicating that Au-TeCDs are able to scavenge O2•- from the surrounding environment. Notably, the respective TeCD and AuNP components of the Au-TeCDs were found to emit fluorescence at 425 and 640 nm upon exposure to superoxide anions. This unique spectroscopic property of Au-TeCDs allowed levels of O2•- in solution to be quantified using dual-fluorescence detection. The Au-TeCDs developed herein also exhibited low-cytotoxicity, versatile capabilities for in situ fluorescence imaging, and effective scavenging of O2•- in living cells. Taken together, these results suggest that Au-TeCDs act as effective tools for monitoring superoxide concentrations in complex mixtures and may be developed as possible therapeutics designed to scavenge excess ROS from diseased cells.
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Affiliation(s)
- Chang Xu
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Ruixia Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Shuzhi Tan
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Justin M Holub
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
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Lee HW, Gu MJ, Lee JY, Lee S, Kim Y, Ha SK. Methylglyoxal-Lysine Dimer, an Advanced Glycation End Product, Induces Inflammation via Interaction with RAGE in Mesangial Cells. Mol Nutr Food Res 2021; 65:e2000799. [PMID: 33890707 DOI: 10.1002/mnfr.202000799] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 04/15/2021] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Advanced glycation end products (AGEs) and receptor of advanced glycation end products (RAGE) mediate renal function during diabetic and non-diabetic nephropathy development. Methylglyoxal-lysine dimer (MOLD), a typical toxic advanced glycation end product (TAGE), contributes to inflammatory responses during renal diseases. This study determines the effect of MOLD on inflammatory responses in mouse mesangial cells. METHODS AND RESULTS The murine mesangial cell line SV40 MES 13 is used to assess nuclear factor-kappa B (NF-κB) expression, reactive oxygen species (ROS) production, and mitochondria labeling. The interaction model between RAGE and MOLD is also determined. MOLD treatment of mesangial cells markedly increases RAGE expression and the linkage with V-type Ig domain of RAGE. MOLD induces ROS production and mitochondrial dysfunction. MOLD activates phosphatidylinositol 3-kinase-protein kinase B (PI3KB) and NF-κB signaling pathways. It is confirmed that these changes are reversed when ROS is suppressed. These effects may be regulated through mitogen-activated protein kinases and pro-inflammatory cytokines in circulatory inflammation responses. CONCLUSION MOLD plays a major role in nephropathy via ROS production and mitochondrial dysfunction through direct association with RAGE. Further, the NF-kB and PI3K/AKT signaling pathways triggered by ROS mediate the inflammatory response to exacerbate MOLD-induced damages in inflammation-related diabetic and non-diabetic renal diseases.
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Affiliation(s)
- Hee-Weon Lee
- Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Min Ji Gu
- Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Jee-Young Lee
- Molecular Design Team, New Drug Development Center, Daegu Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, 41061, South Korea
| | - Seungju Lee
- Molecular Design Team, New Drug Development Center, Daegu Gyeongbuk Medical Innovation Foundation (DGMIF), Daegu, 41061, South Korea
| | - Yoonsook Kim
- Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Sang Keun Ha
- Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea.,Division of Food Biotechnology, University of Science and Technology, Daejeon, Korea
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36
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Zhu M, Liu X, Liu W, Lu Y, Cheng J, Chen Y. β cell aging and age-related diabetes. Aging (Albany NY) 2021; 13:7691-7706. [PMID: 33686020 PMCID: PMC7993693 DOI: 10.18632/aging.202593] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/23/2020] [Indexed: 02/05/2023]
Abstract
Type 2 diabetes is characterized by insulin resistance and loss of β cell mass and function. Aging is considered as a major risk factor for development of type 2 diabetes. However, the roles of pancreatic β cell senescence and systemic aging in the pathogenesis of type 2 diabetes in elderly people remain poorly understood. In this review, we aimed to discuss the current findings and viewpoints focusing on β cell aging and the development of type 2 diabetes.
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Affiliation(s)
- Min Zhu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Xiaohong Liu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Wen Liu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Jingqiu Cheng
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
- Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, P.R. China
| | - Younan Chen
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, P.R. China
- Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, P.R. China
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37
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Deo P, Dhillon VS, Lim WM, Jaunay EL, Donnellan L, Peake B, McCullough C, Fenech M. Advanced glycation end-products accelerate telomere attrition and increase pro-inflammatory mediators in human WIL2-NS cells. Mutagenesis 2021; 35:291-297. [PMID: 32319517 DOI: 10.1093/mutage/geaa012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/07/2020] [Indexed: 12/11/2022] Open
Abstract
This study investigated the effect of dietary sugars and advanced glycation end-products (AGE) on telomere dynamics in WIL2-NS cells. Dietary sugars [glucose (Glu) and fructose (Fru); 0.1 M each] were incubated with bovine serum albumin (BSA) (10 mg/ml) at 60 ± 1°C for 6 weeks to generate AGE-BSA. Liquid chromatography-mass spectrometry (LC-MS/MS) analysis showed total AGE levels as 87.74 ± 4.46 nmol/mg and 84.94 ± 4.28 nmol/mg respectively in Glu-BSA and Fru-BSA model. Cell treatment studies using WIL2-NS cells were based on either glucose, fructose (each 2.5-40 mM) or AGE-BSA (200-600 µg/ml) in a dose-dependent manner for 9 days. Telomere length (TL) was measured using qPCR. Nitric oxide (NO) production and tumour necrosis factor-α (TNF-α) levels were measured in WIL2-NS culture medium. An increasing trend for TNF-α and NO production was observed with higher concentration of glucose (R2 = 0.358; P = 0.019; R2 = 0.307; P = 0.027) and fructose (R2 = 0.669; P = 0.001; R2 = 0.339; P = 0.006). A decreasing trend for TL (R2 = 0.828; P = 0.000), and an increasing trend for NO production (R2 = 0.352; P = 0.031) were observed with increasing Glu-BSA concentrations. Fru-BSA treatment did not show significant trend on TL (R2 = 0.135; P = 0.352) with increasing concentration, however, a significant reduction was observed at 600 µg/ml (P < 0.01) when compared to BSA treatment. No trends for TNF-α levels and a decreasing trend on NO production (R2 = 0.5201; P = 0.019) was observed with increasing Fru-BSA treatment. In conclusion, this study demonstrates a potential relationship between dietary sugars, AGEs and telomere attrition. AGEs may also exert telomere shortening through the production of pro-inflammatory metabolites, which ultimately increase the risk of diabetes complications and age-related disease throughout lifespan.
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Affiliation(s)
- Permal Deo
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Varinderpal S Dhillon
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Wai Mun Lim
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Emma L Jaunay
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Leigh Donnellan
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Brock Peake
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Caitlin McCullough
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Michael Fenech
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.,Genome Health Foundation, North Brighton, Australia
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Dehnad A, Fan W, Jiang JX, Fish SR, Li Y, Das S, Mozes G, Wong KA, Olson KA, Charville GW, Ali M, Török NJ. AGER1 downregulation associates with fibrosis in nonalcoholic steatohepatitis and type 2 diabetes. J Clin Invest 2021; 130:4320-4330. [PMID: 32657776 DOI: 10.1172/jci133051] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/05/2020] [Indexed: 12/25/2022] Open
Abstract
Type 2 diabetes is clinically associated with progressive necroinflammation and fibrosis in nonalcoholic steatohepatitis (NASH). Advanced glycation end-products (AGEs) accumulate during prolonged hyperglycemia, but the mechanistic pathways that lead to accelerated liver fibrosis have not been well defined. In this study, we show that the AGEs clearance receptor AGER1 was downregulated in patients with NASH and diabetes and in our NASH models, whereas the proinflammatory receptor RAGE was induced. These findings were associated with necroinflammatory, fibrogenic, and pro-oxidant activity via the NADPH oxidase 4. Inhibition of AGEs or RAGE deletion in hepatocytes in vivo reversed these effects. We demonstrate that dysregulation of NRF2 by neddylation of cullin 3 was linked to AGER1 downregulation and that induction of NRF2 using an adeno-associated virus-mediated approach in hepatocytes in vivo reversed AGER1 downregulation, lowered the level of AGEs, and improved proinflammatory and fibrogenic responses in mice on a high AGEs diet. In patients with NASH and diabetes or insulin resistance, low AGER1 levels were associated with hepatocyte ballooning degeneration and ductular reaction. Collectively, prolonged exposure to AGEs in the liver promotes an AGER1/RAGE imbalance and consequent redox, inflammatory, and fibrogenic activity in NASH.
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Affiliation(s)
- Ali Dehnad
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Weiguo Fan
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | | | | | - Yuan Li
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Suvarthi Das
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Gergely Mozes
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | | | - Kristin A Olson
- Department of Pathology, UC Davis Medical Center, Sacramento, California, USA
| | | | - Mohammed Ali
- Department of Surgery, UC Davis Medical Center, Sacramento, California, USA
| | - Natalie J Török
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
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39
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AZT oxidative damage in the liver. Toxicology 2021. [DOI: 10.1016/b978-0-12-819092-0.00029-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Ferns GA, Shahini Shams Abadi M, Arjmand MH. The potential association between metabolic syndrome and risk of post-surgical adhesion. Arch Physiol Biochem 2020; 129:649-654. [PMID: 33290664 DOI: 10.1080/13813455.2020.1856882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Metabolic syndrome (MetS) is defined by the clustering of several associated with a group of disorders that include: obesity, dyslipidemia, hypertension, and insulin resistance. The incidence of MetS is increasing globally around the world. Indeed the rates of different types of surgery in older or younger patients with Mets are increasing and they are exposed to a wide range of operations including abdominal, pelvic, urologic, or any invasive procedures. Post-surgical adhesion is a common problem and is a challenge for the surgeon. Despite many studies on its pathogenesis, there remain many un-answered questions about it, for example why certain tissues and patients are more at higher risk of post-surgical adhesions. Many studies have suggested that MetS is associated with up-regulating molecular mechanisms leading to chronic inflammation and hypercoagulability. In this review, we discuss some of the molecular mechanisms by MetS may enhance post-surgical adhesion, and particularly regarding those involved in coagulation and inflammation.
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Affiliation(s)
- Gordon A Ferns
- Brighton & Sussex Medical School, Division of Medical Education, Brighton, UK
| | - Milad Shahini Shams Abadi
- Department of Microbiology and Immunology, Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
- Cancer Research Center, Shahrekord university of Medical Sciences, Shahrekord, Iran
| | - Mohammad-Hassan Arjmand
- Cancer Research Center, Shahrekord university of Medical Sciences, Shahrekord, Iran
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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41
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Kang Q, Yang C. Oxidative stress and diabetic retinopathy: Molecular mechanisms, pathogenetic role and therapeutic implications. Redox Biol 2020; 37:101799. [PMID: 33248932 PMCID: PMC7767789 DOI: 10.1016/j.redox.2020.101799] [Citation(s) in RCA: 352] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/29/2020] [Accepted: 11/10/2020] [Indexed: 12/18/2022] Open
Abstract
Oxidative stress, a cytopathic outcome of excessive generation of ROS and the repression of antioxidant defense system for ROS elimination, is involved in the pathogenesis of multiple diseases, including diabetes and its complications. Retinopathy, a microvascular complication of diabetes, is the primary cause of acquired blindness in diabetic patients. Oxidative stress has been verified as one critical contributor to the pathogenesis of diabetic retinopathy. Oxidative stress can both contribute to and result from the metabolic abnormalities induced by hyperglycemia, mainly including the increased flux of the polyol pathway and hexosamine pathway, the hyper-activation of protein kinase C (PKC) isoforms, and the accumulation of advanced glycation end products (AGEs). Moreover, the repression of the antioxidant defense system by hyperglycemia-mediated epigenetic modification also leads to the imbalance between the scavenging and production of ROS. Excessive accumulation of ROS induces mitochondrial damage, cellular apoptosis, inflammation, lipid peroxidation, and structural and functional alterations in retina. Therefore, it is important to understand and elucidate the oxidative stress-related mechanisms underlying the progress of diabetic retinopathy. In addition, the abnormalities correlated with oxidative stress provide multiple potential therapeutic targets to develop safe and effective treatments for diabetic retinopathy. Here, we also summarized the main antioxidant therapeutic strategies to control this disease. Oxidative stress can both contribute to and result from hyperglycemia-induced metabolic abnormalities in retina. Genes important in regulation of ROS are epigenetically modified, increasing ROS accumulation in retina. Oxidative stress is closely associated with the pathological changes in the progress of diabetic retinopathy. Antioxidants ameliorate retinopathy through targeting multiple steps of oxidative stress.
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Affiliation(s)
- Qingzheng Kang
- Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, 518060, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Chunxue Yang
- Department of Pathology, The University of Hong Kong, Hong Kong SAR, 999077, China.
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Chen L, Zhu H, Su S, Harshfield G, Sullivan J, Webb C, Blumenthal JA, Wang X, Huang Y, Treiber FA, Kapuku G, Li W, Dong Y. High-Mobility Group Box-1 Is Associated With Obesity, Inflammation, and Subclinical Cardiovascular Risk Among Young Adults: A Longitudinal Cohort Study. Arterioscler Thromb Vasc Biol 2020; 40:2776-2784. [PMID: 32814439 PMCID: PMC7578115 DOI: 10.1161/atvbaha.120.314599] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE We aimed to characterize circulating HMGB1 (high-mobility group box-1) levels, one of the better-characterized damage-associated molecular patterns, with respect to age, sex, and race in the general population, and investigate the longitudinal associations of HMGB1 with inflammatory markers, obesity, and preclinical markers of cardiovascular disease. Approach and Results: The analyses included 489 participants (50% Blacks, aged 24.6±3.3 years at the first visit) with up to 4 follow-up visits (1149 samples) over a maximum of 8.5 years. Systolic blood pressure, diastolic blood pressure, carotid-femoral pulse wave velocity, and carotid intima-media thickness together with plasma HMGB1, hs-CRP (high-sensitivity C-reactive protein), IFN-γ (interferon-γ), IL-6 (interleukin-6), IL-10 (interleukin-10), and TNF-α (tumor necrosis factor-α) were measured at each visit. At baseline, plasma HMGB1 concentrations were higher in Blacks compared with Whites (3.86 versus 3.20 ng/mL, P<0.001), and in females compared with males (3.75 versus 3.30 ng/mL, P=0.005). HMGB1 concentrations increased with age (P=0.007), and higher levels of obesity measures (P<0.001). Without adjustment for age, sex, race, and body mass index, HMGB1 concentrations were positively associated with hs-CRP, IL-6, TNF-α, systolic blood pressure, diastolic blood pressure, and carotid-femoral pulse wave velocity (P<0.05) but not IL-10, IFN-γ or carotid intima-media thickness. After covariate adjustments, the associations of HMGB1 with hs-CRP, and carotid-femoral pulse wave velocity remained statistically significant (P<0.05). CONCLUSIONS This study demonstrates the age, sex, and race differences in circulating HMGB1. The increasing circulating concentrations of HMGB1 with age suggest a potential role of HMGB1 in the pathogenesis of chronic low-grade inflammation, obesity, and subclinical cardiovascular disease risk.
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Affiliation(s)
- Li Chen
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Haidong Zhu
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Shaoyong Su
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Gregory Harshfield
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Jennifer Sullivan
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Clinton Webb
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - James A. Blumenthal
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - Xiaoling Wang
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ying Huang
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Frank A. Treiber
- College of Nursing, Medical University of South Carolina, Charleston, SC, USA
- College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Gaston Kapuku
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Wenjun Li
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Yanbin Dong
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
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Chymase as a Possible Therapeutic Target for Amelioration of Non-Alcoholic Steatohepatitis. Int J Mol Sci 2020; 21:ijms21207543. [PMID: 33066113 PMCID: PMC7589185 DOI: 10.3390/ijms21207543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023] Open
Abstract
The development and progression of non-alcoholic steatohepatitis (NASH) are linked to oxidative stress, inflammation, and fibrosis of the liver. Chymase, a chymotrypsin-like enzyme produced in mast cells, has various enzymatic actions. These actions include activation of angiotensin II, matrix metalloproteinase (MMP)-9, and transforming growth factor (TGF)-β, which are associated with oxidative stress, inflammation, and fibrosis, respectively. Augmentation of chymase activity in the liver has been reported in various NASH models. Generation of hepatic angiotensin II and related oxidative stress is upregulated in NASH but attenuated by treatment with a chymase inhibitor. Additionally, increases in MMP-9 and accumulation of inflammatory cells are observed in NASH but are decreased by chymase inhibitor administration. TGF-β and collagen I upregulation in NASH is also attenuated by chymase inhibition. These results in experimental NASH models demonstrate that a chymase inhibitor can effectively ameliorate NASH via the reduction of oxidative stress, inflammation, and fibrosis. Thus, chymase may be a therapeutic target for amelioration of NASH.
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Kheniser KG, Aminian A, Kashyap SR. A Review of the Current Evidence: Impact of Metabolic Surgery on Diabetes Outcomes and Obesity-Associated Macrovascular Complications. Curr Diab Rep 2020; 20:57. [PMID: 32984918 DOI: 10.1007/s11892-020-01350-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/10/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE OF REVIEW Type 2 diabetes (T2D) and obesity are comorbidities that generally progress with time even when non-invasive therapies are prescribed. Indeed, weight loss that is achieved with behavioral modification alone is generally inconsistent and often short-lived. In contrast, although patients do experience weight regain with metabolic surgery, they still benefit from a significant net decrease in weight. As a result, T2D remission can be achieved in up to 60% of patients within 2 years after surgery. However, it is unknown if the positive effects of metabolic surgery extend to macrovascular disease risk reduction. RECENT FINDINGS As noted in four randomized controlled trials (RCTs), Roux-en-Y gastric bypass (RYGB) facilitates partial remission of T2D in about 30% of volunteers 5 years after surgery. Of the four RCTs, only one investigated the effects of sleeve gastrectomy (SG) at 5 years; that study found that the rate of partial relapse was slightly lower with SG (23%). However, observational studies indicate that the gap between RYGB and SG may be larger than that observed in RCTs. In contrast, the rate of full remission is noted infrequently 5 years after SG or RYGB. Metabolic surgery also mitigates macrovascular disease risk as indicated by multiple observational studies. The effects of metabolic surgery on cardiometabolic parameters are clinically meaningful. The weight loss that is facilitated by metabolic surgery reduces the metabolic and inflammatory stress caused by T2D and obesity. In turn, metabolic surgery likely mitigates macrovascular disease risk. Additional evidence from RCTs is needed to substantiate the effects of metabolic surgery on macrovascular disease risk.
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Affiliation(s)
- Karim G Kheniser
- Center for Spine Health, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Ali Aminian
- Department of General Surgery, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Sangeeta R Kashyap
- Department of Endocrinology and Metabolism, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
- , Cleveland, USA.
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Sun Y, Lu Y, Saredy J, Wang X, Drummer Iv C, Shao Y, Saaoud F, Xu K, Liu M, Yang WY, Jiang X, Wang H, Yang X. ROS systems are a new integrated network for sensing homeostasis and alarming stresses in organelle metabolic processes. Redox Biol 2020; 37:101696. [PMID: 32950427 PMCID: PMC7767745 DOI: 10.1016/j.redox.2020.101696] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/17/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are critical for the progression of cardiovascular diseases, inflammations and tumors. However, the mechanisms of how ROS sense metabolic stress, regulate metabolic pathways and initiate proliferation, inflammation and cell death responses remain poorly characterized. In this analytic review, we concluded that: 1) Based on different features and functions, eleven types of ROS can be classified into seven functional groups: metabolic stress-sensing, chemical connecting, organelle communication, stress branch-out, inflammasome-activating, dual functions and triple functions ROS. 2) Among the ROS generation systems, mitochondria consume the most amount of oxygen; and nine types of ROS are generated; thus, mitochondrial ROS systems serve as the central hub for connecting ROS with inflammasome activation, trained immunity and immunometabolic pathways. 3) Increased nuclear ROS production significantly promotes cell death in comparison to that in other organelles. Nuclear ROS systems serve as a convergent hub and decision-makers to connect unbearable and alarming metabolic stresses to inflammation and cell death. 4) Balanced ROS levels indicate physiological homeostasis of various metabolic processes in subcellular organelles and cytosol, while imbalanced ROS levels present alarms for pathological organelle stresses in metabolic processes. Based on these analyses, we propose a working model that ROS systems are a new integrated network for sensing homeostasis and alarming stress in metabolic processes in various subcellular organelles. Our model provides novel insights on the roles of the ROS systems in bridging metabolic stress to inflammation, cell death and tumorigenesis; and provide novel therapeutic targets for treating those diseases. (Word count: 246).
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Affiliation(s)
- Yu Sun
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Yifan Lu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Jason Saredy
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xianwei Wang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Charles Drummer Iv
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Ying Shao
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Fatma Saaoud
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Keman Xu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - Ming Liu
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA
| | - William Y Yang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xiaohua Jiang
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA; Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Hong Wang
- Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA
| | - Xiaofeng Yang
- Centers for Cardiovascular Research and Inflammation, Translational and Clinical Lung Research, USA; Metabolic Disease Research and Cardiovascular Research and Thrombosis Research, Departments of Pharmacology, Microbiology and Immunology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA.
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46
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Zhu JL, Cai YQ, Long SL, Chen Z, Mo ZC. The role of advanced glycation end products in human infertility. Life Sci 2020; 255:117830. [PMID: 32450172 DOI: 10.1016/j.lfs.2020.117830] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/09/2020] [Accepted: 05/19/2020] [Indexed: 01/03/2023]
Abstract
Advanced glycation end products (AGEs) are heterogeneous products of the non-enzymatic interaction between proteins and reducing sugars. Numerous studies have shown that AGEs are associated with senescence, diabetes, vascular disease, aging and kidney disease. Infertility has been affected approximately 10 to15% of couples of reproductive ages. AGEs accumulation has been shown to play a crucial role in pathogenesis of infertility-related diseases. The present review provides the generation process, mechanism and pathological significance of AGEs and the novel treatment targeting AGEs for infertility.
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Affiliation(s)
- Jing-Ling Zhu
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China; Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China; Clinical Anatomy & Reproductive Medicine Application Institute, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ya-Qin Cai
- Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China; Clinical Anatomy & Reproductive Medicine Application Institute, Department of Histology and Embryology, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Shuang-Lian Long
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China
| | - Zhuo Chen
- Hunan Province Innovative Training Base for Medical Postgraduates, University of South China and Yueyang Women & Children's Medical Center, Yueyang 416000, Hunan, China.
| | - Zhong-Cheng Mo
- Institute of Basic Medical Science, Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin Medical University, Guilin 541199, Guangxi, China.
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47
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Sergi D, Boulestin H, Campbell FM, Williams LM. The Role of Dietary Advanced Glycation End Products in Metabolic Dysfunction. Mol Nutr Food Res 2020; 65:e1900934. [PMID: 32246887 DOI: 10.1002/mnfr.201900934] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/09/2020] [Indexed: 12/13/2022]
Abstract
Advanced glycation end products (AGEs) are a heterogeneous group of molecules produced, non-enzymatically, from the interaction between reducing sugars and the free amino groups of proteins, nucleic acids, and lipids. AGEs are formed as a normal consequence of metabolism but can also be absorbed from the diet. They have been widely implicated in the complications of diabetes affecting cardiovascular health, the nervous system, eyes, and kidneys. Increased levels of AGEs are also detrimental to metabolic health and may contribute to the metabolic abnormalities induced by the Western diet, which is high in processed foods and represents a significant source of AGEs. While increased AGE levels are a consequence of diabetic hyperglycaemia, AGEs themselves activate signaling pathways, which compromise insulin signaling and pancreatic β-cell function, thus, contributing to the development of type 2 diabetes mellitus (T2DM). Furthermore, AGEs may also contribute to the obesogenic effects of the Western diet by promoting hypothalamic inflammation and disrupting the central control of energy balance. Here, the role of dietary AGEs in metabolic dysfunction is reviewed with a focus on the mechanisms underpinning their detrimental role in insulin resistance, pancreatic β-cell dysfunction, hypothalamic control of energy balance, and the pathogenesis of T2DM and obesity.
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Affiliation(s)
- Domenico Sergi
- Nutrition and Health Substantiation Group, Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide, SA, 5000, Australia.,Adelaide Medical School, The University of Adelaide, Adelaide, SA, 5000, Australia
| | - Hakim Boulestin
- Rowett Institute, University of Aberdeen, Aberdeen, AB25 2ZD, UK
| | - Fiona M Campbell
- Rowett Institute, University of Aberdeen, Aberdeen, AB25 2ZD, UK
| | - Lynda M Williams
- Rowett Institute, University of Aberdeen, Aberdeen, AB25 2ZD, UK
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48
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Omofuma OO, Turner DP, Peterson LL, Merchant AT, Zhang J, Steck SE. Dietary Advanced Glycation End-products (AGE) and Risk of Breast Cancer in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial (PLCO). Cancer Prev Res (Phila) 2020; 13:601-610. [PMID: 32169887 PMCID: PMC7335328 DOI: 10.1158/1940-6207.capr-19-0457] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 02/03/2020] [Accepted: 03/09/2020] [Indexed: 12/11/2022]
Abstract
Advanced glycation end-products (AGEs) are implicated in the pathogenesis of several chronic diseases including cancer. AGEs are produced endogenously but can also be consumed from foods. AGE formation in food is accelerated during cooking at high temperatures. Certain high fat or highly processed foods have high AGE values. The objective of the study was to assign and quantify Nϵ-carboxymethyl-lysine (CML)-AGE content in food and investigate the association between dietary AGE intake and breast cancer risk in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. The study included women enrolled in the intervention arm who were cancer-free at baseline and completed a baseline questionnaire and food frequency questionnaire (DQX). CML-AGE values were assigned and quantified to foods in the DQX using a published AGE database. Cox proportional hazards models were used to estimate the hazard ratios (HR) and 95% confidence intervals (CI) of breast cancer among all women, and stratified by race/ethnicity, invasiveness of disease, and hormone receptor status. After a median 11.5 years of follow-up, 1,592 women were diagnosed with breast cancer. Higher CML-AGE intake was associated with increased risk of breast cancer among all women (HRQ5VSQ1, 1.30; 95% CI, 1.04-1.62; P trend = 0.04) and in non-Hispanic white women (HRT3VST1, 1.21; 95% CI, 1.02-1.44). Increased CML-AGE intake was associated with increased risk of in situ (HRT3VST1, 1.49; 95% CI, 1.11-2.01) and hormone receptor-positive (HRT3VST1, 1.24; 95% CI, 1.01-1.53) breast cancers. In conclusion, high intake of dietary AGE may contribute to increased breast cancer.
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Affiliation(s)
- Omonefe O Omofuma
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - David P Turner
- Medical University of South Carolina, Charleston, South Carolina
| | - Lindsay L Peterson
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Anwar T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - Jiajia Zhang
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina
| | - Susan E Steck
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina.
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49
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Fathalipour M, Mahmoodzadeh A, Safa O, Mirkhani H. Puerarin as potential treatment in diabetic retinopathy. JOURNAL OF HERBMED PHARMACOLOGY 2020. [DOI: 10.34172/jhp.2020.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Diabetic retinopathy (DR) is one of the most prevalent microvascular complications of diabetes, and the most leading cause of visual loss around the world. The lack of effective and approved treatment in DR is a major challenge for diabetic patients. Nowadays, natural compounds have got attention of the researchers for management of DR. Many evidences suggest that puerarin as a natural polyphenol exerts advantageous effects against DR. In the present review, we summarized the protective effects of puerarin against DR, and discussed the underlying mechanisms of these effects. Puerarin attenuates retinal neovascularization and neurodegeneration in diabetes mellitus, and the underlying mechanisms are related to antioxidant, anti-inflammatory, and antiapoptotic properties of the compound. In conclusion, puerarin might be a potential adjuvant agent for the prevention and treatment of DR. However, comprehensive studies are necessary to show its effectiveness and safety, particularly in human.
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Affiliation(s)
- Mohammad Fathalipour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Amir Mahmoodzadeh
- Department of Biochemistry, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omid Safa
- Department of Clinical Pharmacy, Faculty of Pharmacy, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Hossein Mirkhani
- Department of Pharmacology, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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50
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Philips CA, Augustine P, Ahamed R, Rajesh S, George T, Valiathan GC, John SK. Role of Granulocyte Colony-stimulating Factor Therapy in Cirrhosis, 'Inside Any Deep Asking Is the Answering'. J Clin Transl Hepatol 2019; 7:371-383. [PMID: 31915607 PMCID: PMC6943215 DOI: 10.14218/jcth.2019.00034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/20/2019] [Accepted: 10/05/2019] [Indexed: 12/13/2022] Open
Abstract
Liver cirrhosis progresses through multiple clinical stages which culminate in either death or liver transplantation. Availability of organs, timely listing and prompt receipt of donor-livers pose difficulties in improving transplant-listed and transplant outcomes. In this regard, regenerative therapies, particularly with granulocyte colony-stimulating factor (GCSF), has become a lucrative option for improving transplant-free survival. However, the literature is confusing with regards to patient selection and real outcomes. In this exhaustive review, we describe the basics of liver fibrosis and cirrhosis through novel insights from a therapeutic point of view, discuss preclinical studies on GCSF in advanced liver disease to improve on clinical utility, shed light on the pertinent literature of GCSF in advanced cirrhosis, and provide astute inputs on growth factor therapy in decompensated cirrhosis.
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Affiliation(s)
- Cyriac Abby Philips
- The Liver Unit and Monarch Liver Lab, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Philip Augustine
- Department of Gastroenterology, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Rizwan Ahamed
- Department of Gastroenterology, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Sasidharan Rajesh
- Interventional Radiology, Hepatobiliary Division, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Tom George
- Interventional Radiology, Hepatobiliary Division, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Gopakumar C. Valiathan
- Department of Hepatobiliary and Transplant Surgery, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
| | - Solomon K. John
- Department of Hepatobiliary and Transplant Surgery, Cochin Gastroenterology Group, Ernakulam Medical Centre, Kochi, Kerala, India
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