1
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Subba R, Fasciolo G, Geremia E, Muscari Tomajoli MT, Petito A, Carrella S, Mondal AC, Napolitano G, Venditti P. Simultaneous induction of systemic hyperglycaemia and stress impairs brain redox homeostasis in the adult zebrafish. Arch Biochem Biophys 2024; 759:110101. [PMID: 39029645 DOI: 10.1016/j.abb.2024.110101] [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: 04/21/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
For diabetic patients it is crucial to constantly monitor blood glucose levels to mitigate complications due to hyperglycaemia, including neurological issues and cognitive impairments. This activity leads to psychological stress, called "diabetes distress," a problem for most patients living with diabetes. Diabetes distress can exacerbate the hyperglycaemia effects on brain and negatively impact the quality of life, but the underlying mechanisms remain poorly explored. We simulated diabetes distress in adult zebrafish by modelling hyperglycaemia, through exposure to dextrose solution, along with chronic unpredictable mild stress (CUMS), and evaluated brain redox homeostasis by assessing reactive oxygen species (ROS) content, the antioxidant system, and effects on mitochondrial biogenesis and fission/fusion processes. We also evaluated the total, cytosolic and nuclear content of nuclear factor erythroid 2-related factor 2 (NRF2), a critical regulator of redox balance, in the whole brain and total NRF2 in specific brain emotional areas. The combined CUMS + Dextrose challenge, but not the individual treatments, reduced total NRF2 levels in the entire brain, but strongly increased its levels in the nuclear fraction. Compensatory upregulation of antioxidant genes appeared inadequate to combat elevated levels of ROS, leading to lowering of the reduced glutathione content and total antioxidant capacity. CUMS + Dextrose treatment also upregulated transcription factors implicated in mitochondrial biogenesis and dynamics with a predominance of fission, which is consistent with increased oxidative stress. In conclusion, this study highlights the close interplay between hyperglycaemia and psychological distress causing overriding oxidative stress in the brain, rendering the organism vulnerable to the development of disease complications.
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Affiliation(s)
- Rhea Subba
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India, 110067
| | - Gianluca Fasciolo
- Department of Biology, University of Naples Federico II, Naples, Italy; Ecosustainable Marine Biotechnology Department, Stazione Zoologica Anton Dohrn, Via Acton 55, Napoli, 80133, Italy
| | - Eugenio Geremia
- International PhD Programme, UNESCO Chair "Environment, Resources and Sustainable Development", Department of Science and Technology, Parthenope University of Naples, 80143, Naples, Italy
| | - Maria Teresa Muscari Tomajoli
- International PhD Programme, UNESCO Chair "Environment, Resources and Sustainable Development", Department of Science and Technology, Parthenope University of Naples, 80143, Naples, Italy
| | - Adriana Petito
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Sabrina Carrella
- Ecosustainable Marine Biotechnology Department, Stazione Zoologica Anton Dohrn, Via Acton 55, Napoli, 80133, Italy
| | - Amal Chandra Mondal
- Laboratory of Cellular and Molecular Neurobiology, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India, 110067.
| | - Gaetana Napolitano
- International PhD Programme, UNESCO Chair "Environment, Resources and Sustainable Development", Department of Science and Technology, Parthenope University of Naples, 80143, Naples, Italy.
| | - Paola Venditti
- Department of Biology, University of Naples Federico II, Naples, Italy.
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2
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Tian S, Yang X, Lin Y, Li X, Zhou S, Yu P, Zhao Y. PDK4-mediated Nrf2 inactivation contributes to oxidative stress and diabetic kidney injury. Cell Signal 2024; 121:111282. [PMID: 38971568 DOI: 10.1016/j.cellsig.2024.111282] [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: 05/04/2024] [Revised: 06/21/2024] [Accepted: 06/29/2024] [Indexed: 07/08/2024]
Abstract
Diabetic kidney disease (DKD) is often featured with redox dyshomeostatis. Pyruvate dehydrogenase kinase 4 (PDK4) is the hub for DKD development. However, the mechanism by which PDK4 mediates DKD is poorly understood. The current work aimed to elucidate the relationship between PDK4 and DKD from the perspective of redox manipulation. Oxidative stress was observed in the human proximal tubular cell line (HK-2 cells) treated with a high concentration of glucose and palmitic acid (HGL). The mechanistic study showed that PDK4 could upregulate Kelch-like ECH-associated protein 1 (Keap1) in HGL-treated HK-2 cells through the suppression of autophagy, resulting in the depletion of nuclear factor erythroid 2-related factor 2 (Nrf2), the master regulator of redox homeostasis. At the cellular level, pharmacological inhibition or genetic knockdown of PDK4 could boost Nrf2, followed by the increase of a plethora of antioxidant enzymes and ferroptosis-suppression enzymes. Meanwhile, the inhibition or knockdown of PDK4 remodeled iron metabolism, further mitigating oxidative stress and lipid peroxidation. The same trend was observed in the DKD mice model. The current work highlighted the role of PDK4 in the development of DKD and suggested that PDK4 might be a promising target for the management of DKD.
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Affiliation(s)
- Shasha Tian
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Xiaopeng Yang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Yao Lin
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Xinran Li
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Saijun Zhou
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Pei Yu
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China; Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China; Nephropathy & Blood Purification Department, The Second Hospital of Tianjin Medical University, Tianjin 300134, China.
| | - Yanjun Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, School of Pharmaceutical Science & Technology, Faculty of Medicine, Tianjin University, Tianjin 300072, China.
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3
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Saha P, Talwar P. Idiopathic pulmonary fibrosis (IPF): disease pathophysiology, targets, and potential therapeutic interventions. Mol Cell Biochem 2024; 479:2181-2194. [PMID: 37707699 DOI: 10.1007/s11010-023-04845-6] [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: 05/25/2023] [Accepted: 08/26/2023] [Indexed: 09/15/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive, degenerative pulmonary condition. Transforming growth factor (TGF)-β, platelet-derived growth factor (PDGF), and tumor necrosis factor-α (TNF-α) are the major modulators of IPF that mediate myofibroblast differentiation and promote fibrotic remodeling of the lung. Cigarette smoke, asbestos fiber, drugs, and radiation are known to favor fibrotic remodeling of the lungs. Oxidative stress in the endoplasmic reticulum (ER) also leads to protein misfolding and promotes ER stress, which is predominant in IPF. This phenomenon further results in excess reactive oxygen species (ROS) aggregation, increasing oxidative stress. During protein folding in the ER, thiol groups on the cysteine residue are oxidized and disulfide bonds are formed, which leads to the production of hydrogen peroxide (H2O2) as a by-product. With the accumulation of misfolded proteins in the ER, multiple signaling cascades are initiated by the cell, collectively termed as the unfolded protein response (UPR). UPR also induces ROS production within the ER and mitochondria and promotes both pro-apoptotic and pro-survival pathways. The prevalence of post-COVID-19 pulmonary fibrosis (PCPF) is 44.9%, along with an alarming increase in "Coronavirus Disease 2019" (COVID-19) comorbidities. Fibrotic airway remodeling and declined lung function are the common endpoints of SARS-CoV-2 infection and IPF. Flavonoids are available in our dietary supplements and exhibit medicinal properties. Apigenin is a flavonoid found in plants, including chamomile, thyme, parsley, garlic, guava, and broccoli, and regulates several cellular functions, such as oxidative stress, ER stress, and fibrotic responses. In this study, we focus on the IPF and COVID-19 pathogenesis and the potential role of Apigenin in addressing disease progression.
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Affiliation(s)
- Pritha Saha
- Apoptosis and Cell Survival Research Laboratory, 412G Pearl Research Park, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Priti Talwar
- Apoptosis and Cell Survival Research Laboratory, 412G Pearl Research Park, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
- Apoptosis and Cell Survival Research Laboratory, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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4
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Petrikonis K, Bernatoniene J, Kopustinskiene DM, Casale R, Davinelli S, Saso L. The Antinociceptive Role of Nrf2 in Neuropathic Pain: From Mechanisms to Clinical Perspectives. Pharmaceutics 2024; 16:1068. [PMID: 39204413 PMCID: PMC11358986 DOI: 10.3390/pharmaceutics16081068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 08/10/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Neuropathic pain, a chronic condition resulting from nerve injury or dysfunction, presents significant therapeutic challenges and is closely associated with oxidative stress and inflammation, both of which can lead to mitochondrial dysfunction. The nuclear factor erythroid 2-related factor 2 (Nrf2) pathway, a critical cellular defense mechanism against oxidative stress, has emerged as a promising target for neuropathic pain management. Nrf2 modulators enhance the expression of antioxidant and cytoprotective genes, thereby reducing oxidative damage, inflammation, and mitochondrial impairment. This review explores the antinociceptive effects of Nrf2, highlighting how pharmacological agents and natural compounds may be used as potential therapeutic strategies against neuropathic pain. Although preclinical studies demonstrate significant pain reduction and improved nerve function through Nrf2 activation, several clinical challenges need to be addressed. However, emerging clinical evidence suggests potential benefits of Nrf2 modulators in several conditions, such as diabetic neuropathy and multiple sclerosis. Future research should focus on further elucidating the molecular role of Nrf2 in neuropathic pain to optimize its modulation efficacy and maximize clinical utility.
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Affiliation(s)
- Kestutis Petrikonis
- Department of Neurology, Lithuanian University of Health Sciences, Eivenių Str. 2, LT-50009 Kaunas, Lithuania;
| | - Jurga Bernatoniene
- Department of Drug Technology and Social Pharmacy, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania;
| | - Dalia M. Kopustinskiene
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania;
| | - Roberto Casale
- Opusmedica Persons, Care & Research-NPO, 29121 Piacenza, Italy;
| | - Sergio Davinelli
- Department of Medicine and Health Sciences “V. Tiberio”, University of Molise, 86100 Campobasso, Italy;
| | - Luciano Saso
- Department of Physiology and Pharmacology “Vittorio Erspamer”, La Sapienza University, 00185 Rome, Italy;
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5
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Chen Y, Chaudhari SN, Harris DA, Roberts CF, Moscalu A, Mathur V, Zhao L, Tavakkoli A, Devlin AS, Sheu EG. A small intestinal bile acid modulates the gut microbiome to improve host metabolic phenotypes following bariatric surgery. Cell Host Microbe 2024; 32:1315-1330.e5. [PMID: 39043190 PMCID: PMC11332993 DOI: 10.1016/j.chom.2024.06.014] [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: 08/25/2023] [Revised: 03/27/2024] [Accepted: 06/20/2024] [Indexed: 07/25/2024]
Abstract
Bariatric surgical procedures such as sleeve gastrectomy (SG) provide effective type 2 diabetes (T2D) remission in human patients. Previous work demonstrated that gastrointestinal levels of the bacterial metabolite lithocholic acid (LCA) are decreased after SG in mice and humans. Here, we show that LCA worsens glucose tolerance and impairs whole-body metabolism. We also show that taurodeoxycholic acid (TDCA), which is the only bile acid whose concentration increases in the murine small intestine post-SG, suppresses the bacterial bile acid-inducible (bai) operon and production of LCA both in vitro and in vivo. Treatment of diet-induced obese mice with TDCA reduces LCA levels and leads to microbiome-dependent improvements in glucose handling. Moreover, TDCA abundance is decreased in small intestinal tissue from T2D patients. This work reveals that TDCA is an endogenous inhibitor of LCA production and suggests that TDCA may contribute to the glucoregulatory effects of bariatric surgery.
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Affiliation(s)
- Yingjia Chen
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Snehal N Chaudhari
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - David A Harris
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA; Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Cullen F Roberts
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Andrei Moscalu
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Vasundhara Mathur
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Lei Zhao
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Ali Tavakkoli
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - A Sloan Devlin
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
| | - Eric G Sheu
- Laboratory for Surgical and Metabolic Research, Department of Surgery, Brigham and Women's Hospital, Boston, MA 02115, USA.
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6
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Zhang F, Ning J, Chen C, Li B, Wei Y. Advances in the mechanisms of Gardenia jasminoides Ellis in improving diabetes and its complications. Fitoterapia 2024; 178:106140. [PMID: 39053745 DOI: 10.1016/j.fitote.2024.106140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/16/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
Gardenia jasminoides Ellis (Zhi-zi), which belongs to the Rubiaceae family, has been used mainly with its fry fruit for thousands of years, and it is an herb with the homology of medicine and food. In traditional Chinese medicine (TCM) theory, Zhi-zi can be used for "Quench Xiaoke", meaning for therapying diabetes in modern medicine. Based on numerous pharmacological studies, Gardenia jasminoides Ellis (Zhi-zi), and its ingredients, mainly including iridoid glycosides and carotenoids (crocins), possess potent antioxidant and anti-inflammatory properties, and can promote insulin secretion and sensitization, stimulate GLP-1 pathway activity, and protect islet β cells and the macro- and microvascular systems. These properties are the primary reasons why Zhi-zi and its ingredients are effective in reducing glucose levels, treating diabetes, and preventing its complications. This review aims to summarize the current situation and the advances of the studies on the mechanisms of Zhi-zi in improving diabetes and its complications, and it is expected to provide useful and systematic references for future research and clinical application of Zhi-zi and its active ingredients in the therapy of diabetes and complications.
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Affiliation(s)
- Fan Zhang
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Junhao Ning
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Chen Chen
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Boxia Li
- The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Yuhui Wei
- The First Hospital of Lanzhou University, Lanzhou 730000, China.
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7
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Wang J, Huang D, Zhang T, Luo Y, Yue X, Zhang H, Cai L, Qian Z. Nrf2, gp91phox and IL-17 are associated with severity and clinical outcomes of patients with subclinical hypothyroidism: a comparative study. Scand J Clin Lab Invest 2024:1-8. [PMID: 39033335 DOI: 10.1080/00365513.2024.2377966] [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: 01/16/2024] [Accepted: 07/05/2024] [Indexed: 07/23/2024]
Abstract
The mechanisms underlying subclinical hypothyroidism (SCH) remain unclear, making timely and accurate differentiation between hypothyroidism and SCH, as well as severity assessment, challenging. This study aimed to investigate the role of NFE2 like bZIP transcription factor 2 (Nrf2), gp91phox, and interleukin-17 (IL-17) in the pathogenesis of SCH. In this prospective comparative study, 105 SCH patients, 105 hypothyroidism patients, and 105 healthy individuals were enrolled from January 2022 to August 2023. SCH patients were categorized into mild-moderate and severe groups based on thyroid-stimulating hormone (TSH) levels. Levels of TSH, free T4 (FT4), free T3 (FT3), thyroglobulin antibodies (TG-Ab), thyroid peroxidase antibodies (TPO-Ab), cholesterol (TC), triglycerides (TG), high-density lipoprotein-cholesterol (HDL-ch), and low-density lipoprotein-cholesterol (LDL-ch) were measured. Nrf2, IL-1β, IL-6, IL-17, and gp91phox levels were tested using ELISA. Nrf2, IL-17 and gp91phox were significantly higher in SCH and hypothyroidism patients compared to the healthy controls, with hypothyroidism patients showing the highest levels. Nrf2 levels were negatively correlated with TSH, TG-Ab and IL-17, but not gp91phox. Nrf2, IL-17 and gp91phox could be used for diagnosis of SCH and severe SCH. Only TG-Ab, IL-17 and gp91phox were independent risk factors for severe SCH. This study demonstrates a negative correlation between serum Nrf2 levels and SCH severity. TG-Ab, IL-17, and gp91phox are independent risk factors, and their associations with SCH pathology suggest their potential roles in the disease mechanism. These findings provide insights into SCH pathogenesis and highlight the need for further research to elucidate their diagnostic or prognostic significance.
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Affiliation(s)
- Jing Wang
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Debin Huang
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Ting Zhang
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Yaheng Luo
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Xing Yue
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Huiling Zhang
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Liu Cai
- Department of Endocrinology and Metabolism, The Third Hospital of Changsha, Changsha, Hunan Province, P.R. China
| | - Zhiyong Qian
- Clinical Medicine, Changsha Health Vocational College, Changsha, Hunan Province, P.R. China
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8
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Xiao X, Li C, Huang X, Chen G, Huang X, Song F, Zhou Y, Liu X, Zhou X, Meng J, Bellou A, Zhong L, Li X. Single-cell RNA sequencing reveals that NRF2 regulates vascular smooth muscle cell phenotypic switching in abdominal aortic aneurysm. FASEB J 2024; 38:e23707. [PMID: 38995239 DOI: 10.1096/fj.202400001rr] [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: 01/01/2024] [Revised: 05/10/2024] [Accepted: 05/15/2024] [Indexed: 07/13/2024]
Abstract
Abdominal aortic aneurysm (AAA) is a life-threatening disease characterized by extensive membrane destruction in the vascular wall that is closely associated with vascular smooth muscle cell (VSMC) phenotypic switching. A thorough understanding of the changes in regulatory factors during VSMC phenotypic switching is essential for managing AAA therapy. In this study, we revealed the impact of NRF2 on the modulation of VSMC phenotype and the development of AAA based on single-cell RNA sequencing analysis. By utilizing a murine model of VSMC-specific knockout of nuclear factor E2-related factor 2 (NRF2), we observed that the absence of NRF2 in VSMCs exacerbated AAA formation in an angiotensin II-induced AAA model. The downregulation of NRF2 promoted VSMC phenotypic switching, leading to an enhanced inflammatory response. Through genome-wide transcriptome analysis and loss- or gain-of-function experiments, we discovered that NRF2 upregulated the expression of VSMC contractile phenotype-specific genes by facilitating microRNA-145 (miR-145) expression. Our data identified NRF2 as a novel regulator involved in maintaining the VSMC contractile phenotype while also influencing AAA formation through an miR-145-dependent regulatory mechanism.
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MESH Headings
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/genetics
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/chemically induced
- Animals
- NF-E2-Related Factor 2/metabolism
- NF-E2-Related Factor 2/genetics
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Mice
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Male
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Phenotype
- Mice, Knockout
- Single-Cell Analysis
- Mice, Inbred C57BL
- Angiotensin II/pharmacology
- Sequence Analysis, RNA
- Disease Models, Animal
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Affiliation(s)
- Xiaoyong Xiao
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Chenglin Li
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Xiaojia Huang
- Medical Research Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Guona Chen
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Xiaoran Huang
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Feier Song
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Yu Zhou
- Division of Vascular Surgery, National-Local Joint Engineering Laboratory of Vascular Disease Treatment, Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, Guangdong Engineering Laboratory of Diagnosis and Treatment of Vascular Disease, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xincheng Liu
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Xueke Zhou
- School of Medicine, South China University of Technology, Guangzhou, China
| | - Jinxiu Meng
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Abdelouahab Bellou
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Lintao Zhong
- Department of Cardiovascular Medicine Department, Zhuhai People's Hospital, Zhuhai, China
| | - Xin Li
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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9
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An N, Wang R, Li L, Wang B, Wang H, Peng G, Zhou H, Chen G. Celastrol alleviates diabetic vascular injury via Keap1/Nrf2-mediated anti-inflammation. Front Pharmacol 2024; 15:1360177. [PMID: 38881873 PMCID: PMC11176472 DOI: 10.3389/fphar.2024.1360177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 05/10/2024] [Indexed: 06/18/2024] Open
Abstract
Introduction: Celastrol (Cel) is a widely used main component of Chinese herbal medicine with strong anti-inflammatory, antiviral and antitumor activities. In the present study, we aimed to elucidate the cellular molecular protective mechanism of Cel against diabetes-induced inflammation and endothelial dysfunction. Methods: Type 2 diabetes (T2DM) was induced by db/db mice, and osmotic pumps containing Cel (100 μg/kg/day) were implanted intraperitoneally and were calibrated to release the drug for 28 days. In addition, human umbilical vein endothelial cells (HUVECs) were cultured in normal or high glucose and palmitic acid-containing (HG + PA) media in the presence or absence of Cel for 48 h. Results: Cel significantly ameliorated the hyperglycemia-induced abnormalities in nuclear factor (erythroid-derived 2)-like protein 2 (Nrf2) pathway activity and alleviated HG + PA-induced oxidative damage. However, the protective effect of Cel was almost completely abolished in HUVECs transfected with short hairpin (sh)RNA targeting Nrf2, but not by nonsense shRNA. Furthermore, HG + PA reduced the phosphorylation of AMP-activated protein kinase (AMPK), the autophagic degradation of p62/Kelch-like ECH-associated protein 1 (Keap1), and the nuclear localization of Nrf2. However, these catabolic pathways were inhibited by Cel treatment in HUVECs. In addition, compound C (AMPK inhibitors) and AAV9-sh-Nrf2 reduced Cel-induced Nrf2 activation and angiogenesis in db/db mice. Discussion: Taking these findings together, the endothelial protective effect of Cel in the presence of HG + PA may be at least in part attributed to its effects to reduce reactive oxygen species (ROS) and inflammation through p62/Keap1-mediated Nrf2 activation.
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Affiliation(s)
- Ning An
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
| | - Rixiang Wang
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
| | - Lin Li
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
| | - Bingyu Wang
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
| | - Huiting Wang
- Department of Pharmacology, Health Science Center, Ningbo University, Ningbo, China
| | - Ganyu Peng
- Department of Pharmacology, Health Science Center, Ningbo University, Ningbo, China
| | - Hua Zhou
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
| | - Gen Chen
- The Affiliated Li Huili Hospital of Ningbo University, Health Science Center, Ningbo University, Ningbo, China
- Department of Pharmacology, Health Science Center, Ningbo University, Ningbo, China
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10
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Kabaliei A, Palchyk V, Izmailova O, Shynkevych V, Shlykova O, Kaidashev I. Long-Term Administration of Omeprazole-Induced Hypergastrinemia and Changed Glucose Homeostasis and Expression of Metabolism-Related Genes. BIOMED RESEARCH INTERNATIONAL 2024; 2024:7747599. [PMID: 38884019 PMCID: PMC11178409 DOI: 10.1155/2024/7747599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 04/23/2024] [Accepted: 05/10/2024] [Indexed: 06/18/2024]
Abstract
Introduction PPIs, or proton pump inhibitors, are the most widely prescribed drugs. There is a debate regarding the relationship between long-term PPI use and the risk of type 2 diabetes mellitus (T2DM). A potential connection between T2DM and PPIs could be an elevated gastrin concentration. This study is aimed at investigating the long-term effects of PPI omeprazole (OZ) on glucose homeostasis and pancreatic gene expression profile in mice. Methods Healthy adult male BALB/c mice were randomly divided into three equal groups (n = 10 in each one): (1) experimental mice that received OZ 20 mg/kg; (2) control mice that received 30 μl saline per os; (3) intact mice without any interventions. Mice were treated for 30 weeks. Glucose homeostasis was investigated by fasting blood glucose level, oral glucose tolerance test (GTT), insulin tolerance test (ITT), and basal insulin resistance (HOMA-IR). Serum gastrin and insulin concentration were determined by ELISA. Expressions of Sirt1, Pparg, Nfκb1 (p105), Nfe2l2, Cxcl5, Smad3, H2a.z, and H3f3b were measured by RT-PCR. Result The ROC analysis revealed an increase in fasting blood glucose levels in OZ-treated mice in comparison with control and intact groups during the 30-week experiment. A slight but statistically significant increase in glucose tolerance and insulin sensitivity was observed in OZ-treated mice within 30 weeks of the experiment. The mice treated with OZ exhibited significant increases in serum insulin and gastrin levels, accompanied by a rise in the HOMA-IR level. These animals had a statistically significant increase in Sirt1, Pparg, and Cxcl5 mRNA expression. There were no differences in β-cell numbers between groups. Conclusion Long-term OZ treatment induced hypergastrin- and hyperinsulinemia and increased expression of Sirt1, Pparg, and Cxcl5 in mouse pancreatic tissues accompanied by specific changes in glucose metabolism. The mechanism of omeprazole-induced Cxcl5 mRNA expression and its association with pancreatic cancer risk should be investigated.
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11
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Tian A, Zheng Y, Li H, Zhang Z, Du L, Huang X, Sun L, Wu H. Eicosapentaenoic acid activates the P62/KEAP1/NRF2 pathway for the prevention of diabetes-associated cognitive dysfunction. Food Funct 2024; 15:5251-5271. [PMID: 38680120 DOI: 10.1039/d4fo00774c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Diabetes-associated cognitive dysfunction (DCD) is a severe complication of diabetes mellitus (DM), threatening the life quality of the diabetic population. However, there is still a lack of effective approaches for its intervention. Eicosapentaenoic acid (EPA) is an omega-3 polyunsaturated fatty acid that was not previously investigated for its effect on DCD. In this study, EPA was found to improve DCD in a mouse model of type 2 DM (T2DM) induced by streptozotocin and a high-fat diet, exhibiting profound protective effects on cognitive dysfunction, neuronal loss, and cerebral oxidative stress and inflammation. While EPA did not attenuate advanced glycation end product-induced neuron injury, we hypothesized that EPA might protect neurons by regulating microglia polarization, the effect of which was confirmed by the co-culture of neurons and lipopolysaccharide-stimulated microglia. RNA sequencing identified nuclear factor-erythroid-2-related factor 2 (NRF2) antioxidant signaling as a major target of EPA in microglia. Mechanistically, EPA increased sequestosome-1 (SQSTM1 or P62) levels that might structurally inhibit Kelch-like ECH associated protein 1 (KEAP1), leading to nuclear translocation of NRF2. P62 and NRF2 predominantly mediated EPA's effect since the knockdown of P62 or NRF2 abolished EPA's protective effect on microglial oxidative stress and inflammation and sequential neuron injuries. Moreover, the regulation of P62/KEPA1/NRF2 axes by EPA was confirmed in the hippocampi of diabetic mice. The present work presents EPA as an effective nutritional approach and microglial P62/KEAP1/NRF2 as molecular targets for the intervention of DCD.
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Affiliation(s)
- Ao Tian
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
- Research Center of Translational Medicine, Jinan Central Hospital, Shandong University, 105 Jiefang Rd., Jinan, Shandong 250013, China.
| | - Yan Zheng
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
| | - Hui Li
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Key Laboratory of Chemical Biology (Ministry of Education), Department of Pharmaceutics, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
| | - Zhiyue Zhang
- NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, Key Laboratory of Chemical Biology (Ministry of Education), Department of Pharmaceutics, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
| | - Lei Du
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
- Research Center of Translational Medicine, Jinan Central Hospital, Shandong University, 105 Jiefang Rd., Jinan, Shandong 250013, China.
| | - Xiaoli Huang
- Department of Nutrition, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhua Xi Rd., Jinan, Shandong 250012, China.
| | - Lei Sun
- Department of Endocrinology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, 107 Wenhua Xi Rd., Jinan, Shandong 250012, China.
| | - Hao Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Shandong University, 44 Wenhuaxi Rd., Jinan, Shandong 250012, China
- Research Center of Translational Medicine, Jinan Central Hospital, Shandong University, 105 Jiefang Rd., Jinan, Shandong 250013, China.
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12
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Thakur MR, Nachane SS, Tupe RS. Alleviation of albumin glycation-induced diabetic cardiomyopathy by L-Arginine: Insights into Nrf-2 signaling. Int J Biol Macromol 2024; 264:130478. [PMID: 38428781 DOI: 10.1016/j.ijbiomac.2024.130478] [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: 09/29/2023] [Revised: 02/19/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
In hyperglycemia, accelerated glycation and oxidative stress give rise to many diabetic complications, such as diabetic cardiomyopathy (DCM). Glycated human serum albumin (GHSA) has disturbed structural integrity and hampered functional capabilities. When GHSA accumulates around cardiac cells, Nrf-2 is dysregulated, aiding oxidative stress. L-Arginine (L-Arg) is prescribed to patients with diabetes and cardiovascular diseases. This research contributes to the mechanistic insights on antiglycation and antioxidant potential of L-Arg in alleviating DCM. HSA was glycated with methylglyoxal in the presence of L-Arg (20-640 mM). Structural and functional modifications of HSA were studied. L-Arg and HSA, GHSA interactions, and thermodynamics were determined by steady-state fluorescence. H9c2 cardiomyocytes were given treatments of GHSA-L-Arg along with the inhibitor of the receptor of AGEs. Cellular antioxidant levels, detoxification enzyme activities were measured. Gene, protein expressions, and immunofluorescence data examined the activation and nuclear translocation of Nrf-2 during glycation and oxidative stress. L-Arg protected HSA from glycation-induced structural and functional modifications. The binding affinity of L-Arg was more towards HSA (104 M-1). L-Arg, specifically at lower concentration (20 mM), upregulated Nrf-2 gene, protein expressions and facilitated its nuclear translocation by activating Nrf-2 signaling. The study concluded that L-Arg can be of therapeutic advantage in glycation-induced DCM and associated oxidative stress.
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Affiliation(s)
- Muskan R Thakur
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India
| | - Sampada S Nachane
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India
| | - Rashmi S Tupe
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115, Maharashtra State, India.
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13
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Jaiswal V, Lee HJ. The Bioactivity and Phytochemicals of Muscari comosum ( Leopoldia comosa), a Plant of Multiple Pharmacological Activities. Int J Mol Sci 2024; 25:2592. [PMID: 38473839 DOI: 10.3390/ijms25052592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/17/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
Leopoldia comosa (LC), popularly known as Muscari comosum, spontaneously grows in the Mediterranean region and its bulbs are used as a vegetable. Traditionally, they are also used to treat various diseases and conditions, which has inspired the study of the pharmacological activities of different parts of LC. These studies revealed the numerous biological properties of LC including antioxidant, anti-inflammatory, anti-diabetes, anti-obesity, anti-cancer, anti-Alzheimer's disease, antibacterial, and immune stimulant. High antioxidant activity compared to other non-cultivated plants, and the potential role of antioxidant activity in other reported activities make LC an excellent candidate to be developed as an antioxidant plant against important associated diseases. The presence of a diverse class of phytochemicals (n = 85), especially flavonoids and homoisoflavones, in LC, also imparts significance to the nutraceutical candidature of the plant. However, limited animal studies and the lack of a directional approach have limited the further design of effective clinical studies for the development of LC. The current study is the first attempt to comprehensively compile information regarding the phytochemicals and pharmacological activities of LC, emphasize the targets/markers targeted by LC, important in other activities, and also highlight the current gaps and propose possible bridges for the development of LC as a therapeutic and/or supplement against important diseases.
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Affiliation(s)
- Varun Jaiswal
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam 13120, Republic of Korea
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam 13120, Republic of Korea
- Institute for Aging and Clinical Nutrition Research, Gachon University, Seongnam 13120, Republic of Korea
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Republic of Korea
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14
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Rabbani N, Thornalley PJ. Hexokinase-linked glycolytic overload and unscheduled glycolysis in hyperglycemia-induced pathogenesis of insulin resistance, beta-cell glucotoxicity, and diabetic vascular complications. Front Endocrinol (Lausanne) 2024; 14:1268308. [PMID: 38292764 PMCID: PMC10824962 DOI: 10.3389/fendo.2023.1268308] [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: 07/27/2023] [Accepted: 12/12/2023] [Indexed: 02/01/2024] Open
Abstract
Hyperglycemia is a risk factor for the development of insulin resistance, beta-cell glucotoxicity, and vascular complications of diabetes. We propose the hypothesis, hexokinase-linked glycolytic overload and unscheduled glycolysis, in explanation. Hexokinases (HKs) catalyze the first step of glucose metabolism. Increased flux of glucose metabolism through glycolysis gated by HKs, when occurring without concomitant increased activity of glycolytic enzymes-unscheduled glycolysis-produces increased levels of glycolytic intermediates with overspill into effector pathways of cell dysfunction and pathogenesis. HK1 is saturated with glucose in euglycemia and, where it is the major HK, provides for basal glycolytic flux without glycolytic overload. HK2 has similar saturation characteristics, except that, in persistent hyperglycemia, it is stabilized to proteolysis by high intracellular glucose concentration, increasing HK activity and initiating glycolytic overload and unscheduled glycolysis. This drives the development of vascular complications of diabetes. Similar HK2-linked unscheduled glycolysis in skeletal muscle and adipose tissue in impaired fasting glucose drives the development of peripheral insulin resistance. Glucokinase (GCK or HK4)-linked glycolytic overload and unscheduled glycolysis occurs in persistent hyperglycemia in hepatocytes and beta-cells, contributing to hepatic insulin resistance and beta-cell glucotoxicity, leading to the development of type 2 diabetes. Downstream effector pathways of HK-linked unscheduled glycolysis are mitochondrial dysfunction and increased reactive oxygen species (ROS) formation; activation of hexosamine, protein kinase c, and dicarbonyl stress pathways; and increased Mlx/Mondo A signaling. Mitochondrial dysfunction and increased ROS was proposed as the initiator of metabolic dysfunction in hyperglycemia, but it is rather one of the multiple downstream effector pathways. Correction of HK2 dysregulation is proposed as a novel therapeutic target. Pharmacotherapy addressing it corrected insulin resistance in overweight and obese subjects in clinical trial. Overall, the damaging effects of hyperglycemia are a consequence of HK-gated increased flux of glucose metabolism without increased glycolytic enzyme activities to accommodate it.
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Affiliation(s)
| | - Paul J. Thornalley
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
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15
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Zhang X, Luo Z, Li J, Lin Y, Li Y, Li W. Sestrin2 in diabetes and diabetic complications. Front Endocrinol (Lausanne) 2023; 14:1274686. [PMID: 37920252 PMCID: PMC10619741 DOI: 10.3389/fendo.2023.1274686] [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: 08/08/2023] [Accepted: 10/03/2023] [Indexed: 11/04/2023] Open
Abstract
Diabetes is a global health problem which is accompanied with multi-systemic complications. It is of great significance to elucidate the pathogenesis and to identify novel therapies of diabetes and diabetic complications. Sestrin2, a stress-inducible protein, is primarily involved in cellular responses to various stresses. It plays critical roles in regulating a series of cellular events, such as oxidative stress, mitochondrial function and endoplasmic reticulum stress. Researches investigating the correlations between Sestrin2, diabetes and diabetic complications are increasing in recent years. This review incorporates recent findings, demonstrates the diverse functions and regulating mechanisms of Sestrin2, and discusses the potential roles of Sestrin2 in the pathogenesis of diabetes and diabetic complications, hoping to highlight a promising therapeutic direction.
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Affiliation(s)
- Xiaodan Zhang
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zirui Luo
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Jiahong Li
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Yaxuan Lin
- The Second Clinical Medicine School, Guangzhou Medical University, Guangzhou, China
| | - Yu Li
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wangen Li
- Department of Endocrinology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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16
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Zhang X, He X, Wei L, He Y, Li Y, Wang Y, Li C. Nuclear erythroid 2-related factor 2 protects against reactive oxygen species -induced preterm premature rupture of membranes through regulation of mitochondria†. Biol Reprod 2023; 109:330-339. [PMID: 37427976 DOI: 10.1093/biolre/ioad075] [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: 04/23/2023] [Revised: 06/08/2023] [Accepted: 07/04/2023] [Indexed: 07/11/2023] Open
Abstract
Preterm premature rupture of membranes (pPROM) is a major cause of preterm birth and neonatal mortality. Reactive oxygen species (ROS) have been identified as a critical factor in the development of pPROM. Mitochondria are known to be the primary source of ROS and play a vital role in maintaining cellular function. The Nuclear erythroid 2-related factor 2 (NRF2) has been demonstrated to play a crucial role in regulating mitochondrial function. However, research exploring the impact of NRF2-regulated mitochondria on pPROM is limited. Therefore, we collected fetal membrane tissues from pPROM and spontaneous preterm labor (sPTL) puerpera, measured the expression level of NRF2, and evaluated the degree of mitochondrial damage in both groups. In addition, we isolated human amniotic epithelial cells (hAECs) from the fetal membranes and used small interfering RNA (siRNA) to suppress NRF2 expression, enabling us to evaluate the impact of NRF2 on mitochondrial damage and ROS production. Our findings indicated that the expression level of NRF2 in pPROM fetal membranes was significantly lower than in sPTL fetal membranes, accompanied by increased mitochondrial damage. Furthermore, after the inhibition of NRF2 in hAECs, the degree of mitochondrial damage was significantly exacerbated, along with a marked increase in both cellular and mitochondrial ROS levels. The regulation of the mitochondrial metabolic process via NRF2 in fetal membranes has the potential to influence ROS production.
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Affiliation(s)
- Xinyuan Zhang
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Clinical Laboratory, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Xiao He
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Clinical Laboratory, Chongqing Health Center for Women and Children, Chongqing, 401147, China
| | - Linna Wei
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, 401147, China
| | - Yang He
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, 401147, China
| | - Yunlong Li
- Department of Obstetrics and Gynecology, Women and Children's Hospital of Chongqing Medical University, 401147, China
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children, 401147, China
| | - Yingxiong Wang
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, 400016, China
| | - Chunli Li
- Department of Clinical Laboratory, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
- Department of Clinical Laboratory, Chongqing Health Center for Women and Children, Chongqing, 401147, China
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17
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Baumel-Alterzon S, Tse I, Heidery F, Garcia-Ocaña A, Scott DK. NRF2 Dysregulation in Mice Leads to Inadequate Beta-Cell Mass Expansion during Pregnancy and Gestational Diabetes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.28.555207. [PMID: 37693560 PMCID: PMC10491153 DOI: 10.1101/2023.08.28.555207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The late stages of the mammalian pregnancy are accompanied with increased insulin resistance due to the increased glucose demand of the growing fetus. Therefore, as a compensatory response to maintain the maternal normal blood glucose levels, maternal beta-cell mass expands leading to increased insulin release. Defects in beta-cell adaptive expansion during pregnancy can lead to gestational diabetes mellitus (GDM). Although the exact mechanisms that promote GDM are poorly understood, GDM strongly associates with impaired beta-cell proliferation and with increased levels of reactive oxygen species (ROS). Here, we show that NRF2 levels are upregulated in mouse beta-cells at gestation day 15 (GD15) concomitant with increased beta-cell proliferation. Importantly, mice with tamoxifen-induced beta-cell-specific NRF2 deletion display inhibition of beta-cell proliferation, increased beta-cell oxidative stress and elevated levels of beta-cell death at GD15. This results in attenuated beta-cell mass expansion and disturbed glucose homeostasis towards the end of pregnancy. Collectively, these results highlight the importance of NRF2-oxidative stress regulation in beta-cell mass adaptation to pregnancy and suggest NRF2 as a potential therapeutic target for treating GDM.
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Affiliation(s)
- Sharon Baumel-Alterzon
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Isabelle Tse
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Fatema Heidery
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Adolfo Garcia-Ocaña
- Department of Molecular and Cellular Endocrinology, Arthur Riggs Diabetes & Metabolism Research Institute at City of Hope, Duarte, CA
| | - Donald K. Scott
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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18
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Leonard ER, Marques ES, Roy MA, Conlin SM, Ranjan R, Timme-Laragy AR. Dietary exposure to the food preservative tert-Butylhydroquinone (tBHQ) impairs zebrafish (Danio rerio) survival, growth, organ development, and gene expression in Nrf2a-dependent and independent ways. Food Chem Toxicol 2023; 176:113788. [PMID: 37075880 PMCID: PMC10213143 DOI: 10.1016/j.fct.2023.113788] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/04/2023] [Accepted: 04/15/2023] [Indexed: 04/21/2023]
Abstract
Tert-Butylhydroquinone (tBHQ), a preservative used to prevent oxidative deterioration of oil, fat, and meat products, has been linked to both chemoprotective and adverse effects. This study investigates the impact of dietary tBHQ consumption on survival, growth parameters, organ development, and gene expression in zebrafish (Danio rerio). As tBHQ activates the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2a), a zebrafish line with a mutation in the DNA-binding domain of Nrf2a was used to identify Nrf2a-dependent vs independent effects. Homozygous Nrf2a wildtype (wt) and mutant (m) larvae were fed a diet containing 5% tBHQ or a control diet. Survival and growth parameters were assessed at 15 days and at 5 months, and samples were collected for RNA sequencing at 5 months. Dietary exposure to tBHQ throughout the larval and juvenile periods negatively impacted growth and survival. RNA-seq analysis found differentially expressed genes related to growth and development and upregulation of several immune system-related pathways. The findings herein demonstrate that dietary tBHQ exposure may impair growth and survival in both Nrf2a dependent and independent manners.
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Affiliation(s)
- Emily R Leonard
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Emily S Marques
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Monika A Roy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA; Biotechnology Training Program, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Sarah M Conlin
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Ravi Ranjan
- Genomics Resource Laboratory, Institute for Applied Life Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA
| | - Alicia R Timme-Laragy
- Department of Environmental Health Sciences, School of Public Health and Health Sciences, University of Massachusetts Amherst, Amherst, MA, 01003, USA.
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19
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Carvalho AN, Branco V, van Horssen J, Saso L. Editorial: Redox-signaling in neurodegenerative diseases: biomarkers, targets, and therapies. Front Cell Neurosci 2023; 17:1198669. [PMID: 37153636 PMCID: PMC10158492 DOI: 10.3389/fncel.2023.1198669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 05/10/2023] Open
Affiliation(s)
- Andreia N. Carvalho
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
- *Correspondence: Andreia N. Carvalho
| | - Vasco Branco
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Caparica, Portugal
| | - Jack van Horssen
- Department of Molecular Cell Biology and Immunology, MS Center Amsterdam, Vrije Universiteit Amsterdam, Amsterdam Neurosciences, Amsterdam UMC Location VUmc, Amsterdam, Netherlands
| | - Luciano Saso
- Department of Physiology and Pharmacology, Faculty of Pharmacy and Medicine, Sapienza University of Rome, Rome, Italy
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