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Liu Y, Zhu M, Dou Y, Xue A, Chen X, Leng K, Dong L, Cao G. Knockdown of KCNQ1OT1 Alleviates the Activation of NLRP3 Inflammasome Through miR-17-5p/TXNIP Axis in Retinal Müller Cells. Curr Eye Res 2024:1-10. [PMID: 39104014 DOI: 10.1080/02713683.2024.2378037] [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: 10/26/2023] [Revised: 06/05/2024] [Accepted: 06/30/2024] [Indexed: 08/07/2024]
Abstract
PURPOSE Diabetic retinopathy (DR) is one of the most severe and common complications caused by diabetic mellites. Inhibiting NLRP3 inflammasome activation displays a crucial therapeutic value in DR. Studies have shown that KCNQ1OT1 plays a critical role in regulating NLRP3 inflammasome activation and participates in the pathogenesis of diabetic complications. The present study aims to explore the role, and the potential mechanism of KCNQ1OT1 in regulating the activation of NLRP3 inflammasome in DR. METHODS qRT-PCR was used to detect the expression of KCNQ1OT1, miR-17-5p, TXNIP, NLRP3, ASC, caspase-1 and IL-1β. Western blot was performed to detect the expression of NLRP3, ASC, caspase-1, IL-1β and TXNIP. Immunohistochemistry and immunostaining were performed to detect the expression of caspase-1. The levels of the inflammatory cytokine IL-1β were determined by ELISA assay. FISH was used to detect the subcellular localisation of KCNQ1OT1. Bioinformatic analysis, luciferase reporter assay and in vitro studies were performed to elucidate the mechanism of KCNQ1OT1-mediated dysfunction. RESULTS The expression of KCNQ1OT1 and the activation of NLRP3 inflammasome were increased in experimental DR models. KCNQ1OT1 knockdown alleviated NLRP3 inflammasome-associated molecules expression. In addition, KCNQ1OT1 was found to be localized mainly in the cytoplasm of Müller cells and facilitated TXNIP expression by acting as a miR-17-5p sponge. KCNQ1OT1 promoted the activation of NLRP3 inflammasome through miR-17-5p/TXNIP axis. CONCLUSIONS In conclusion, it was found in this study that KCNQ1OT1 promoted the activation of NLRP3 inflammasome both in vitro and in vivo, which was mediated by miR-17-5p/TXNIP axis. KCNQ1OT1 might be an effective interference target for the prevention and treatment of DR.
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Affiliation(s)
- Yu Liu
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Manhui Zhu
- Department of Ophthalmology, Lixiang Eye Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yuping Dou
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Aihua Xue
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Xiujuan Chen
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Kai Leng
- Department of Medical Informatics, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lili Dong
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
| | - Guoping Cao
- Department of Ophthalmology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou School of Clinical Medicine, Nanjing Medical University, Taizhou, Jiangsu, China
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Xu X, Zhang L, He Y, Qi C, Li F. Progress in Research on the Role of the Thioredoxin System in Chemical Nerve Injury. TOXICS 2024; 12:510. [PMID: 39058162 PMCID: PMC11280602 DOI: 10.3390/toxics12070510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/30/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024]
Abstract
(1) Background: Various factors, such as oxidative stress, mitochondrial dysfunction, tumors, inflammation, trauma, immune disorders, and neuronal toxicity, can cause nerve damage. Chemical nerve injury, which results from exposure to toxic chemicals, has garnered increasing research attention. The thioredoxin (Trx) system, comprising Trx, Trx reductase, nicotinamide adenine dinucleotide phosphate, and Trx-interacting protein (TXNIP; endogenous Trx inhibitor), helps maintain redox homeostasis in the central nervous system. The dysregulation of this system can cause dementia, cognitive impairment, nerve conduction disorders, movement disorders, and other neurological disorders. Thus, maintaining Trx system homeostasis is crucial for preventing or treating nerve damage. (2) Objective: In this review study, we explored factors influencing the homeostasis of the Trx system and the involvement of its homeostatic imbalance in chemical nerve injury. In addition, we investigated the therapeutic potential of the Trx system-targeting active substances against chemical nerve injury. (3) Conclusions: Chemicals such as morphine, metals, and methylglyoxal interfere with the activity of TXNIP, Trx, and Trx reductase, disrupting Trx system homeostasis by affecting the phosphatidylinositol-3-kinase/protein kinase B, extracellular signal-regulated kinase, and apoptotic signaling-regulated kinase 1/p38 mitogen-activated protein kinase pathways, thereby leading to neurological disorders. Active substances such as resveratrol and lysergic acid sulfide mitigate the symptoms of chemical nerve injury by regulating the Ras/Raf1/extracellular signal-regulated kinase pathway and the miR-146a-5p/TXNIP axis. This study may guide the development of Trx-targeting modulators for treating neurological disorders and chemical nerve injuries.
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Affiliation(s)
- Xinwei Xu
- School of Medicine, Jiangsu University, Zhenjiang 212013, China; (X.X.); (L.Z.); (Y.H.)
| | - Lan Zhang
- School of Medicine, Jiangsu University, Zhenjiang 212013, China; (X.X.); (L.Z.); (Y.H.)
| | - Yuyun He
- School of Medicine, Jiangsu University, Zhenjiang 212013, China; (X.X.); (L.Z.); (Y.H.)
| | - Cong Qi
- Department of Pharmacy, Jurong People’s Hospital, Jurong 212400, China;
| | - Fang Li
- School of Medicine, Jiangsu University, Zhenjiang 212013, China; (X.X.); (L.Z.); (Y.H.)
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Wang C, Cui C, Xie X, Chen B, Feng L, Jiang P. Calcitriol attenuates lipopolysaccharide-induced neuroinflammation and depressive-like behaviors by suppressing the P2X7R/NLRP3/caspase-1 pathway. Psychopharmacology (Berl) 2024; 241:1329-1343. [PMID: 38411637 DOI: 10.1007/s00213-024-06565-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 02/22/2024] [Indexed: 02/28/2024]
Abstract
RATIONALE Microglia-mediated neuroinflammation is a vital hallmark in progression of depression, while calcitriol exerts anti-inflammatory effects in the brain. The activation of the P2X7 receptor has an important link to neuroinflammation. However, it is unclear whether calcitriol treatment exerts anti-inflammatory effects in association with P2X7R activation. OBJECTIVE In this study, we assessed the antidepressive and neuroprotective effects of calcitriol on lipopolysaccharide (LPS)-mediated depressive-like behavior, neuroinflammation, and neuronal damage. METHODS In in vitro experiments, the BV2 cells were exposed to LPS, and the protective effects of calcitriol were assessed. For in vivo experiment, thirty-two male C57BL/6 mice were divided into four groups of control, calcitriol, LPS and LPS + calcitriol. Calcitriol was administered at 1 µg/kg for 14 days and LPS at 1 mg/kg once every other day for 14 days. The control group mice were given equal volumes of vehicles. All treatments were delivered intraperitoneally. RESULTS The in vitro experiments showed calcitriol inhibited the release of inflammatory mediators induced by LPS in BV2 cells. The in vivo experiments revealed that calcitriol alleviated LPS-induced behavioral abnormalities and spatial learning impairments. Moreover, calcitriol treatment reduced the mRNA levels of pro-inflammatory cytokines, while increasing anti-inflammatory cytokine levels in the hippocampus. Our results further revealed that calcitriol administration attenuated LPS-induced microglia activation by suppressing P2X7R/NLRP3/caspase-1 signaling. Moreover, calcitriol inhibited apoptosis of neurons in the hippocampus as evidenced by expression of apoptosis-related proteins and TUNEL assay. CONCLUSIONS Collectively, our findings demonstrated that calcitriol exerts antidepressive and neuroprotective effects through the suppression of the P2X7R/NLRP3/caspase-1 pathway both in LPS-induced inflammation models in vitro and in vivo.
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Affiliation(s)
- Changshui Wang
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Changmeng Cui
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Xin Xie
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China
| | - Beibei Chen
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China
| | - Lei Feng
- Department of Neurosurgery, Jining First People's Hospital, Shandong First Medical University, Jining, China.
| | - Pei Jiang
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China.
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China.
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Li G, He S, Liu T, Zheng N. Therapeutic potential of vitamin D3 in mitigating high glucose‑induced renal damage: Mechanistic insights into oxidative stress inhibition and TXNIP/NLRP3 signaling pathway blockade. Exp Ther Med 2024; 28:277. [PMID: 38800040 PMCID: PMC11117114 DOI: 10.3892/etm.2024.12565] [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: 09/26/2023] [Accepted: 03/15/2024] [Indexed: 05/29/2024] Open
Abstract
In the development of diabetic nephropathy, pathological damage such as interstitial fibrosis and cell apoptosis often occur in renal tubules. In the present study, diabetic and control group mice were randomly treated with vitamin D3 or vehicle for 6 months. In addition, human renal tubular epithelial (HK-2) cells were cultured in high-glucose medium and treated with vitamin D3 or the oxidative inhibitor NAC. Immunohistochemistry, western blotting, quantitative PCR), and ELISA showed that vitamin D3 decreased the expression of α-smooth muscle actin and E-cadherin in renal tubular epithelial cells, improving interstitial fibrosis. It also downregulated the ratio of Bax/Bcl2 protein, alleviating apoptosis in renal tubular epithelial cells. Furthermore, vitamin D3 significantly inhibited oxidative stress response in renal tubular epithelial cells and blocked the (Thioredoxin Interacting Protein) TXNIP/NLRP3 inflammatory pathway. Therefore, vitamin D3 can protect renal tubular epithelial cells from fibrosis and apoptosis by inhibiting oxidative stress response and blocking the TXNIP/NLRP3 inflammatory pathway in diabetic nephropathy.
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Affiliation(s)
- Guanqing Li
- Emergency Department, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Suhuan He
- The First Outpatient Department of The Directly Affiliated Organ of Hebei Province, Shijiazhuang, Hebei 050000, P.R. China
| | - Tao Liu
- Department of Plastic Surgery, Hebei General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Na Zheng
- The First Outpatient Department of The Directly Affiliated Organ of Hebei Province, Shijiazhuang, Hebei 050000, P.R. China
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Zhuang Y, Zhuang Z, Cai Q, Hu X, Huang H. Serum vitamin D is substantially reduced and predicts flares in diabetic retinopathy patients. J Diabetes Investig 2024; 15:867-873. [PMID: 38469994 PMCID: PMC11215683 DOI: 10.1111/jdi.14185] [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: 10/19/2023] [Revised: 02/22/2024] [Accepted: 03/01/2024] [Indexed: 03/13/2024] Open
Abstract
AIMS/INTRODUCTION Research has suggested that vitamin D deficiency is associated with diabetic retinopathy (DR). Our study aimed to determine whether vitamin D deficiency is the cause of diabetic retinopathy or if diabetic retinopathy reduces vitamin D levels. MATERIALS AND METHODS Participants with type-2 diabetes were recruited for this prospective observational clinical study and were divided into a diabetic group without retinopathy and a diabetic group with retinopathy, with additional healthy volunteers serving as a control group. The differences in clinical characteristics among the three groups were also compared. Patients without retinopathy were then followed for 1 year to monitor the incidence of diabetic retinopathy. After follow-up, participants were divided into subgroups based on whether diabetic retinopathy occurred. The baseline data of the subgroups were compared, and the independent risk factors were analyzed. RESULTS Vitamin D levels were generally low. Participants with diabetic retinopathy had significantly lower vitamin D levels than did those without retinopathy (P < 0.01). A comparison of the two subgroups revealed lower baseline vitamin D concentrations in the new-DR subgroup than in the non-DR subgroup (P < 0.01). Vitamin D deficiency and elevated HbA1c levels were found to be independent risk factors for diabetic retinopathy (OR = 0.935, 95% CI: 0.867-0.981, P = 0.006; OR = 2.208, 95% CI: 1.764-2.764, P < 0.01). The limit of vitamin D intake according to the receiver-operating characteristic (ROC) curve was 26.01 ng/mL, and the area under the ROC curve was 0.603 (95% CI: 0.559-0.706, P = 0.002). CONCLUSIONS Vitamin D levels were significantly lower in patients diagnosed with diabetic retinopathy. More importantly, vitamin D deficiency may accelerate the onset of diabetic retinopathy.
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Affiliation(s)
- Yong Zhuang
- Department of EndocrinologyThe Second Affiliated Hospital of Fujian Medical UniversityQuanzhouChina
| | - Zihao Zhuang
- Department of OphthalmologyThe Second Affiliated Hospital of Fujian Medical UniversityQuanzhouChina
| | - Qingyan Cai
- Department of EndocrinologyThe Second Affiliated Hospital of Fujian Medical UniversityQuanzhouChina
| | - Xin Hu
- Department of EndocrinologyThe Second Affiliated Hospital of Fujian Medical UniversityQuanzhouChina
| | - Huibin Huang
- Department of EndocrinologyThe Second Affiliated Hospital of Fujian Medical UniversityQuanzhouChina
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Mrugacz M, Pieńczykowska K, Bryl A. The Role of Vitamin D3 in Ocular Diseases. Nutrients 2024; 16:1878. [PMID: 38931233 PMCID: PMC11206323 DOI: 10.3390/nu16121878] [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: 05/06/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Vitamin D3 plays a vital role in numerous physiological processes within the human body, including having a positive effect on eye health. It is renowned for its immunomodulatory, anti-inflammatory, antioxidant, and angiogenic properties. Its deficiency is evolving into a significant global challenge. In order to explain the connection between vitamin D3 and various ocular diseases, 84 relevant studies, mainly from the PubMed database, published in English between 1999 and 2024 were analyzed. Ocular tissues can activate and regulate vitamin D levels, which emphasizes the significance of this nutrient in maintaining eye homeostasis. While there is suggestive evidence for a probable association between vitamin D3 and ocular health, more robust research is needed to establish causation and inform clinical guidelines.
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Affiliation(s)
- Małgorzata Mrugacz
- Department of Ophthalmology and Eye Rehabilitation, Medical University of Bialystok, 15-089 Białystok, Poland;
| | - Kamila Pieńczykowska
- The Medical University of Bialystok Clinical Hospital, 15-089 Białystok, Poland;
| | - Anna Bryl
- Department of Ophthalmology and Eye Rehabilitation, Medical University of Bialystok, 15-089 Białystok, Poland;
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Xiong M, Yu C, Ren B, Zhong M, Lu J, Yuan C, Sun Q, Peng Q, Zeng M, Song H. Global trends in oxidative stress in the Retina: A bibliometric analysis of 2013-2023. Heliyon 2024; 10:e31620. [PMID: 38831806 PMCID: PMC11145483 DOI: 10.1016/j.heliyon.2024.e31620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/18/2024] [Accepted: 05/20/2024] [Indexed: 06/05/2024] Open
Abstract
Background Oxidative stress plays a significant role in the pathogenesis of many retinal diseases. However, only a few systematic bibliometric studies have been conducted. This study aims to visualize research hotspots and developmental trends in oxidative stress in the retina from 2013 to 2023 by analyzing bibliometric data. Methods We retrieved papers on oxidative stress in the retina published between 2013 and 2023 from the Web of Science Core Collection. The data were visually analyzed using CiteSpace and VOSviewer software. Results The total number of 2100 publications were included in the analysis. An overall increasing trend in the number of publications is observed between 2013 and 2023. Chinese publications were the most contributive, but United States publications were the most influential. Shanghai Jiao Tong University was the most active and prolific institution. Antioxidants was the most productive journal, while Oxidative Medicine and Cellular Longevity were the journals with the most-cited articles. Kaarniranta K, from Finland, was the most productive and influential author. Examination of co-cited references revealed that researchers in the field are primarily focused on investigating the molecular mechanisms, preventive strategies, and utilization of antioxidants to address retinal oxidative damage. Diabetic retinopathy, endothelial growth factor, retinitis pigmentosa, retinal degeneration, antioxidant response, retinal ganglion cells, and genes are the research hotspots in this field. Metabolism, sodium iodate, and system are at the forefront of research in this field. Conclusion Attention toward retinal oxidative stress has increased over the past decade. Current research focuses on the mechanisms of retinal diseases related to oxidative stress and the experimental study of antioxidants in retinal diseases, which may continue to be a trend in the future.
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Affiliation(s)
- Meng Xiong
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Chang Yu
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Baoping Ren
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Meiqi Zhong
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Jing Lu
- Hunan Provincial Key Laboratory for Prevention and Treatment of Ophthalmology and Otolaryngology Diseases with Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Chengzhi Yuan
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Qifang Sun
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Qinghua Peng
- Hunan Provincial Key Laboratory for Prevention and Treatment of Ophthalmology and Otolaryngology Diseases with Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Meiyan Zeng
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Houpan Song
- Hunan Provincial Key Laboratory of Traditional Chinese Medicine Diagnostics, Hunan University of Chinese Medicine, Changsha, Hunan, China
- School of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
- Hunan Provincial Key Laboratory for Prevention and Treatment of Ophthalmology and Otolaryngology Diseases with Chinese Medicine, Hunan University of Chinese Medicine, Changsha, Hunan, China
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Khalil B, Sharif-Askari NS, Hafezi S, Sharif-Askari FS, Al Anouti F, Hamid Q, Halwani R. Vitamin D regulates COVID-19 associated severity by suppressing the NLRP3 inflammasome pathway. PLoS One 2024; 19:e0302818. [PMID: 38748756 PMCID: PMC11095707 DOI: 10.1371/journal.pone.0302818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/14/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND The role of vitamin D3 (VitD3) in modulating innate and adaptive immunity has been reported in different disease contexts. Since the start of the coronavirus disease-2019 (COVID-19) pandemic, the role of VitD3 has been highlighted in many correlational and observational studies. However, the exact mechanisms of action are not well identified. One of the mechanisms via which VitD3 modulates innate immunity is by regulating the NLRP3-inflammasome pathway, being a main underlying cause of SARS-CoV-2-induced hyperinflammation. AIMS AND MAIN METHODS Blood specimens of severe COVID-19 patients with or without VitD3 treatment were collected during their stay in the intensive care unit and patients were followed up for 29 days. qPCR, western blot, and ELISA were done to investigate the mechanism of action of VitD3 on the NLRP3 inflammasome activation. KEY FINDINGS We here report the ability of VitD3 to downregulate the NLRP3-inflammsome pathway in severe COVID-19 patients. Lower inflammasome pathway activation was observed with significantly lower gene and protein expression of NLRP3, cleaved caspase-1, ASC and IL-1β among severe COVID-19 patients treated with VitD3. The reduction of the inflammasome pathway was associated with a reduction in disease severity markers and enhancement of type I IFN pathway. SIGNIFICANCE Our data reveals an important anti-inflammatory effect of VitD3 during SARS-CoV-2 infection. Further investigations are warranted to better characterize the ability of VitD3 to control disease pathogenesis and prevent progression to severe states. This will allow for a more efficient use of a low cost and accessible treatment like VitD3.
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Affiliation(s)
- Bariaa Khalil
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Narjes Saheb Sharif-Askari
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Shirin Hafezi
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Fatemeh Saheb Sharif-Askari
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates
| | - Fatme Al Anouti
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
- ASPIRE Precision Medicine Research Institute, Abu Dhabi, United Arab Emirates
| | - Qutayba Hamid
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Center, Montreal, Quebec, Canada
| | - Rabih Halwani
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Prince Abdullah Ben Khaled Celiac Disease Research Chair, Department of Pediatrics, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
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Alsabaani NA, Amawi K, Eleawa SM, Nabeel Ibrahim W, Aldhaban W, Alaraj AM, Alkhalaf B, Sami W, Alshaikhli H, Alkhateeb MA. Nrf-2-dependent antioxidant and anti-inflammatory effects underlie the protective effect of esculeoside A against retinal damage in streptozotocin-induced diabetic rats. Biomed Pharmacother 2024; 173:116461. [PMID: 38503237 DOI: 10.1016/j.biopha.2024.116461] [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: 01/04/2024] [Revised: 03/15/2024] [Accepted: 03/15/2024] [Indexed: 03/21/2024] Open
Abstract
Esculeoside A (ESA) is a tomato-derived glycoside with antioxidant and anti-inflammatory properties. The protective effect of ESA against diabetic retinopathy is not well-investigated and was the core objective of this study. In addition, we tested if such protection involves the activation of Nrf2 signaling. Type 1 diabetes mellitus (T1DM) was induced in adult Wistar male rats by an intraperitoneal injection of streptozotocin (65 mg/kg). Non-diabetic and T1DM rats were divided into two subgroup groups given either the vehicle or ESA (100 mg)/kg. An additional T1DM group was given ESA (100 mg/kg) and an Nrf2 inhibitor (2 mg/kg) (n=8 rats/group). Treatments continued for 12 weeks. In this study, according to the histological features, ESA improved the structure of ganglionic cells and increased the number of cells of the inner nuclear and plexiform layers in the retinas of T1DM rats. Concomitantly, it reduced the retina levels of malondialdehyde (lipid peroxides), vascular endothelial growth factor, interleukin-6, tumor necrosis factor-α, Bax, and caspase-3. In the retinas of the control and diabetic rats, ESA boosted the levels of total glutathione, superoxide dismutase, heme-oxygenase-1, and Bcl2, reduced the mRNA levels of REDD1, and enhanced cytoplasmic and nuclear levels of Nrf2. However, ESA failed to alter the mRNA levels of Nrf2 and keap1, protein levels of keap1, plasma glucose, plasma insulin, serum triglycerides, cholesterol, and LDL-c in both the control and T1DM rats. In conclusion, ESA alleviates retinopathy in T1DM rats by suppressing REDD1-associated degradation and inhibiting the Nrf2/antioxidant axis.
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Affiliation(s)
- Nasser A Alsabaani
- Department of Ophthalmology, College of Medicine, King Khalid University, Abha P.O.Box 61421, Saudi Arabia.
| | - Kawther Amawi
- Department of Medical Laboratory Sciences, Faculty of Allied Medical Sciences, Zarqa University, Al-Zarqa, P.O. Box: 132222, Jordan.
| | - Samy M Eleawa
- Department of Applied Medical Sciences. College of Health Sciences, Public Authority for Applied Education and Training (PAAET), Kuwait P.O. Box: 2378, Kuwait.
| | - Wisam Nabeel Ibrahim
- Department of Biomedical Sciences, College of Health Sciences, QU health, Qatar University, Doha, P.O. Box: 2713, Qatar.
| | - Walid Aldhaban
- Department of Ophthalmology, College of Medicine, King Khalid University, Abha P.O.Box 61421, Saudi Arabia.
| | - Ahmad Mohammad Alaraj
- Department of Ophthalmology, College of Medicine, Qassim University, Qassim P.O. Box 52751, Saudi Arabia.
| | - Badr Alkhalaf
- Department of Environmental Sciences. College of Health Health Sciences, PAAET, Kuwait.
| | - Waqas Sami
- Department of pre-clinical affairs, College of Nursing, QU health, Qatar University, Doha P.O. Box: 2713, Qatar.
| | - Hisham Alshaikhli
- Department of pre-clinical affairs, College of Nursing, QU health, Qatar University, Doha P.O. Box: 2713, Qatar.
| | - Mahmoud A Alkhateeb
- Department of pre-clinical affairs, College of Nursing, QU health, Qatar University, Doha P.O. Box: 2713, Qatar.
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Akhter A, Alouffi S, Shahab U, Akasha R, Fazal-Ur-Rehman M, Ghoniem ME, Ahmad N, Kaur K, Pandey RP, Alshammari A, Akhter F, Ahmad S. Vitamin D supplementation modulates glycated hemoglobin (HBA1c) in diabetes mellitus. Arch Biochem Biophys 2024; 753:109911. [PMID: 38280562 DOI: 10.1016/j.abb.2024.109911] [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: 12/10/2023] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
Diabetes is a metabolic illness that increases protein glycosylation in hyperglycemic conditions, which can have an impact on almost every organ system in the body. The role of vitamin D in the etiology of diabetes under RAGE (receptor for advanced glycation end products) stress has recently received some attention on a global scale. Vitamin D's other skeletal benefits have generated a great deal of research. Vitamin D's function in the development of type 1 and type 2 diabetes is supported by the discovery of 1,25 (OH)2D3 and 1-Alpha-Hydroylase expression in immune cells, pancreatic beta cells, and several other organs besides the bone system. A lower HBA1c level, metabolic syndrome, and diabetes mellitus all seems to be associated with vitamin D insufficiency. Most of the cross-sectional and prospective observational studies that were used to gather human evidence revealed an inverse relationship between vitamin D level and the prevalence or incidence of elevated HBA1c in type 2 diabetes. Several trials have reported on the impact of vitamin D supplementation for glycemia or incidence of type 2 diabetes, with varying degrees of success. The current paper examines the available data for a relationship between vitamin D supplementation and HBA1c level in diabetes and discusses the biological plausibility of such a relationship.
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Affiliation(s)
- Asma Akhter
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, 11790, United States.
| | - Sultan Alouffi
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, 2440, Saudi Arabia.
| | - Uzma Shahab
- Department of Biochemistry, King George Medical University, Lucknow, U.P., India.
| | - Rihab Akasha
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, 2440, Saudi Arabia.
| | | | - Mohamed E Ghoniem
- Department of Internal Medicine, College of Medicine, University of Hail, 2440, Saudi Arabia; Department of Internal Medicine, Faculty of Medicine, Zagazig University, Zagazig, 44519, Egypt.
| | - Naved Ahmad
- Department of Computer Science and Information System, College of Applied Sciences, AlMaarefa University, P.O.Box 71666, Riyadh, 13713, Saudi Arabia.
| | - Kirtanjot Kaur
- University Centre for Research and Development, Chandigarh University, Mohali, Punjab, India.
| | - Ramendra Pati Pandey
- School of Health Sciences and Technology (SOHST), UPES, Dehradun, 248007, Uttarakhand, India.
| | - Ahmed Alshammari
- Department of Internal Medicine, College of Medicine, University of Hail, Saudi Arabia.
| | - Firoz Akhter
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, 11790, United States.
| | - Saheem Ahmad
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, 2440, Saudi Arabia.
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11
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Zou G, Que L, Liu Y, Lu Q. Interplay of endothelial-mesenchymal transition, inflammation, and autophagy in proliferative diabetic retinopathy pathogenesis. Heliyon 2024; 10:e25166. [PMID: 38327444 PMCID: PMC10847601 DOI: 10.1016/j.heliyon.2024.e25166] [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: 06/01/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/09/2024] Open
Abstract
Background Assessment and validation of endothelial-mesenchymal transition (EndoMT) in the retinal endothelium of patients with proliferative diabetic retinopathy (PDR) at the level of retinal and vitreous specimens, and preliminary discussion of its regulatory mechanisms. Methods Transcriptome sequencing profiles of CD31+ cells from 9 retinal fibrovascular mem-branes (FVMs) and 4 postmortem retinas were downloaded from GEO databases to analyze EndoMT-related differentially expressed genes (DEGs). Then, 42 PDR patients and 34 idiopathic macular holes (IMH) patients were enrolled as the PDR and control groups, respectively. Vitreous humor (VH) samples were collected, and the expression of EndoMT-related proteins was quantified by enzyme-linked immunosorbent assay. Results A total of 5845 DEGs were identified, and we subsequently focused on the analysis of 24 EndoMT-related marker genes, including the trigger of EndoMT, endothelial genes, mesenchymal genes, transcription factors, inflammatory factors, and autophagy markers. Six of these genes were selected for protein assay validation in VH, showing increased mesenchymal marker (type I collagen α 2 chain, COL1A2) and decreased endothelial marker (VE-cadherin, CDH5) accompanied by increased TGFβ, IL-1β, LC3B and P62 in PDR patients. In addition, anti-VEGF therapy could enhance EndoMT-related phenotypes. Conclusions EndoMT may underlie the pathogenesis of PDR, and the induction and regulation correlate with autophagy defects and the inflammatory response.
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Affiliation(s)
- Gaocheng Zou
- Department of Ophthalmology, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, China
| | - Lijuan Que
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yaping Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guang-dong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Qianyi Lu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
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12
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Yang L, Li Z, Fang J. Scutellarin Alleviates Diabetic Retinopathy via the Suppression of Nucleotide-Binding Oligomerization Domain (NOD)-Like Receptor Pyrin Domain Containing Protein 3 Inflammasome Activation. Curr Eye Res 2024; 49:180-187. [PMID: 38014534 DOI: 10.1080/02713683.2023.2273777] [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: 06/04/2023] [Accepted: 10/17/2023] [Indexed: 11/29/2023]
Abstract
PURPOSE Diabetic retinopathy, a prevalent complication of diabetes, represents the leading cause of vision loss and blindness among middle-aged and elderly populations. Recent research has demonstrated the ameliorating effects of scutellarin on diabetes-associated complications such as diabetic retinopathy and type 2 diabetic cardiomyopathy. However, investigations into its protective impact and underlying mechanisms on diabetic retinopathy are scant. This study aims to explore the therapeutic potential of scutellarin in diabetic retinopathy treatment. METHODS Diabetic retinopathy was induced in rats through intraperitoneal injections of streptozotocin (STZ, 60 mg/kg) administered daily for three consecutive days. Following this, diabetic retinopathy rats received daily intragastric administration of scutellarin (40 mg/kg) for 42 days. RESULTS Our findings suggest that scutellarin alleviates histological damage in the retinal tissues of streptozotocin-challenged rats. Furthermore, scutellarin effectively enhances total retinal thickness and increases the number of ganglion cell layer (GCL) cells in the retinal tissues of streptozotocin-treated rats. Scutellarin also demonstrated anti-inflammatory and antioxidant effects in the retinal tissues of STZ-induced rats, as indicated by reduced levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6, and elevated levels of glutathione peroxidase, superoxide dismutase, and catalase. Additionally, scutellarin effectively inhibited the expression of NOD-like receptor pyrin domain containing protein 3 inflammasome-related markers in the retinal tissues of streptozotocin-administered rats. CONCLUSIONS Collectively, our results indicate that scutellarin significantly reduces streptozotocin-induced retinal inflammation, an effect that may be partially attributed to the suppression of NLRP3 inflammasome activation.
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Affiliation(s)
- Lina Yang
- Department of Ophthalmology, Xinchang County People's Hospital, Shaoxing, China
| | - Zheming Li
- College of Pharmacy, Hangzhou Medical College, Hangzhou, China
| | - Jian Fang
- Department of Ophthalmology, Xinchang County People's Hospital, Shaoxing, China
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Rák T, Kovács-Valasek A, Pöstyéni E, Csutak A, Gábriel R. Complementary Approaches to Retinal Health Focusing on Diabetic Retinopathy. Cells 2023; 12:2699. [PMID: 38067127 PMCID: PMC10705724 DOI: 10.3390/cells12232699] [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: 10/12/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
Diabetes mellitus affects carbohydrate homeostasis but also influences fat and protein metabolism. Due to ophthalmic complications, it is a leading cause of blindness worldwide. The molecular pathology reveals that nuclear factor kappa B (NFκB) has a central role in the progression of diabetic retinopathy, sharing this signaling pathway with another major retinal disorder, glaucoma. Therefore, new therapeutic approaches can be elaborated to decelerate the ever-emerging "epidemics" of diabetic retinopathy and glaucoma targeting this critical node. In our review, we emphasize the role of an improvement of lifestyle in its prevention as well as the use of phytomedicals associated with evidence-based protocols. A balanced personalized therapy requires an integrative approach to be more successful for prevention and early treatment.
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Affiliation(s)
- Tibor Rák
- Department of Ophthalmology, Clinical Centre, Medical School, University of Pécs, Rákóczi út 2., 7623 Pécs, Hungary; (T.R.)
| | - Andrea Kovács-Valasek
- Department of Neurobiology, University of Pécs, Ifjúság útja 6, 7624 Pécs, Hungary
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, 7624 Pécs, Hungary
| | - Etelka Pöstyéni
- Department of Neurobiology, University of Pécs, Ifjúság útja 6, 7624 Pécs, Hungary
| | - Adrienne Csutak
- Department of Ophthalmology, Clinical Centre, Medical School, University of Pécs, Rákóczi út 2., 7623 Pécs, Hungary; (T.R.)
| | - Róbert Gábriel
- Department of Neurobiology, University of Pécs, Ifjúság útja 6, 7624 Pécs, Hungary
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, 7624 Pécs, Hungary
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14
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Yakout SM, Alfadul H, Ansari MGA, Khattak MNK, Al-Daghri NM. Vitamin D Status Modestly Regulates NOD-Like Receptor Family with a Pyrin Domain 3 Inflammasome and Interleukin Profiles among Arab Adults. Int J Mol Sci 2023; 24:16377. [PMID: 38003567 PMCID: PMC10670975 DOI: 10.3390/ijms242216377] [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: 10/02/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Vitamin D (VD) deficiency has been associated with inflammation and dysregulation of the immune system. The NLRP3 inflammasome, a critical immune response component, plays a pivotal role in developing inflammatory diseases. VD hinders NLRP3 inflammasome activation and thus exerts anti-inflammatory effects. This study aimed to analyze the effect of VD deficiency on circulating levels of NLRP3 inflammasomes (NLRP3 and caspase-1) and associated interleukins (IL-1α, IL-1β, IL-18, IL-33 and IL-37) in Saudi adults. Methods: A total of 338 Saudi adults (128 males and 210 females) (mean age = 41.2 ± 9.1 years and mean BMI 31.2 ± 6.5 kg/m2) were included. Overnight-fasting serum samples were collected. Participants were stratified according to their VD status. Serum levels of NLRP3 inflammasomes and interleukins of interest were assessed using commercially available immuno-assays. Individuals with VD deficiency had significantly lower mean 25(OH)D levels than those with a normal VD status (29.3 nmol/L vs. 74.2 nmol/L, p < 0.001). The NLRP3 levels were higher in the VD-deficient group than their VD-sufficient counterparts (0.18 vs. 0.16, p = 0.01). Significant inverse associations were observed between NLRP3 levels with age (r = -0.20, p = 0.003) and BMI (r = -0.17, p = 0.01). Stepwise regression analysis identified insulin (β = 0.38, p = 0.005) and NLRP3 (β = -1.33, p = 0.03) as significant predictors of VD status, explaining 18.3% of the variance. The findings suggest that the VD status modestly regulates NLRP3 inflammasome and interleukin activities. This may provide novel insights into the pathogenesis and management of inflammatory disorders.
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Affiliation(s)
| | | | | | | | - Nasser M. Al-Daghri
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia (M.N.K.K.)
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15
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Wang W, Wang Y. Integrative bioinformatics analysis of biomarkers and pathways for exploring the mechanisms and molecular targets associated with pyroptosis in type 2 diabetes mellitus. Front Endocrinol (Lausanne) 2023; 14:1207142. [PMID: 38034011 PMCID: PMC10684677 DOI: 10.3389/fendo.2023.1207142] [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: 04/17/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Introduction Research has shown that pyroptosis contributes greatly to the progression of diabetes and its complications. However, the exact relationship between this particular cell death process and the pathology of type 2 diabetes mellitus (T2DM) remains unclear. In this study, we used bioinformatic tools to identify the pyroptosis-related genes (PRGs) associated with T2DM and to analyze their roles in the disease pathology. Methods Two microarray datasets, GSE7014 and GSE25724, were obtained from the GEO database and assessed for differentially expressed genes (DEGs). The T2DM-associated DEGs that overlapped with differentially expressed PRGs were noted as T2DM-PRGs. Subsequently, 25 T2DM-PRGs were validated and subjected to functional enrichment analysis through Gene Ontology annotation analysis, Kyoto Encyclopedia of Genes and Genomes pathway analysis, and gene set enrichment analysis (GSEA). The diagnostic and predictive value of the T2DM-PRGs was evaluated using receiver operating characteristic curves (ROC). Additionally, a single-sample GSEA algorithm was applied to study immune infiltration in T2DM and assess immune infiltration levels. Results We identified 25 T2DM-PRGs that were significantly enriched in the nuclear factor-kappa B signaling and prostate cancer pathways. The top five differentially expressed prognostic T2DM-PRGs targeted by miRNAs were PTEN, BRD4, HSP90AB1, VIM, and PKN2. The top five differentially expressed T2DM-PRGs associated with transcription factors were HSP90AB1, VIM, PLCG1, SCAF11, and PTEN. The genes PLCG1, PTEN, TP63, CHI3L1, SDHB, DPP8, BCL2, SERPINB1, ACE2, DRD2, DDX58, and BTK showed excellent diagnostic performance. The immune infiltration analysis revealed notable differences in immune cells between T2DM and normal tissues in both datasets. These findings suggest that T2DM-PRGs play a crucial role in the development and progression of T2DM and could be used as potential diagnostic biomarkers and therapeutic targets. Discussion Investigating the mechanisms and biomarkers associated with pyroptosis may offer valuable insights into the pathophysiology of T2DM and lead to novel therapeutic approaches to treat the disease.
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Affiliation(s)
- Wei Wang
- Department of Endocrinology, School of Medicine, Zhongda Hospital, Institute of Diabetes, Southeast University, Nanjing, Jiangsu, China
- Department of Endocrinology, First Affiliated Hospital of Baotou Medical Collage, Baotou, China
| | - Yao Wang
- Department of Endocrinology, School of Medicine, Zhongda Hospital, Institute of Diabetes, Southeast University, Nanjing, Jiangsu, China
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16
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Herrera-Martínez AD, Castillo-Peinado LLS, Molina-Puerta MJ, Calañas-Continente A, Membrives A, Castilla J, Camacho Cardenosa M, Casado-Díaz A, Gálvez-Moreno MA, Gahete MD, Quesada Gómez JM, Bouillon R, Priego-Capote F, Luque RM. Bariatric surgery and calcifediol treatment, Gordian knot of severe-obesity-related comorbidities treatment. Front Endocrinol (Lausanne) 2023; 14:1243906. [PMID: 37867510 PMCID: PMC10588639 DOI: 10.3389/fendo.2023.1243906] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/11/2023] [Indexed: 10/24/2023] Open
Abstract
Background Obesity (OB) is a chronic metabolic disease with important associated comorbidities and mortality. Vitamin D supplementation is frequently administered after bariatric surgery (BS), so as to reduce OB-related complications, maybe including chronic inflammation. Aim This study aimed to explore relations between vitamin D metabolites and components of the inflammasome machinery in OB before and after BS and their relations with the improvement of metabolic comorbidities. Patients and methods Epidemiological/clinical/anthropometric/biochemical evaluation was performed in patients with OB at baseline and 6 months after BS. Evaluation of i) vitamin-D metabolites in plasma and ii) components of the inflammasome machinery and inflammatory-associated factors [NOD-like-receptors (NLRs), inflammasome-activation-components, cytokines and inflammation/apoptosis-related components, and cell-cycle and DNA-damage regulators] in peripheral blood mononuclear cells (PBMCs) was performed at baseline and 6 months after BS. Clinical and molecular correlations/associations were analyzed. Results Significant correlations between vitamin D metabolites and inflammasome-machinery components were observed at baseline, and these correlations were significantly reduced 6 months after BS in parallel to a decrease in inflammation markers, fat mass, and body weight. Treatment with calcifediol remarkably increased 25OHD levels, despite 24,25(OH)2D3 remained stable after BS. Several inflammasome-machinery components were associated with improvement in metabolic comorbidities, especially hypertension and dyslipidemia. Conclusion The beneficial effects of vitamin D on OB-related comorbidities after BS patients are associated with significant changes in the molecular expression of key inflammasome-machinery components. The expression profile of these inflammasome components can be dynamically modulated in PBMCs after BS and vitamin D supplementation, suggesting that this profile could likely serve as a sensor and early predictor of the reversal of OB-related complications after BS.
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Affiliation(s)
- Aura D. Herrera-Martínez
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
| | - Laura L. S. Castillo-Peinado
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Department of Analytical Chemistry, University of Córdoba, Córdoba, Spain
- Chemical Institute for Energy and Environment (IQUEMA), University of Córdoba, Córdoba, Spain
- CIBER Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - María J. Molina-Puerta
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
| | - Alfonso Calañas-Continente
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
| | - Antonio Membrives
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- General Surgery Service, Reina Sofia University Hospital, Córdoba, Spain
| | - Juan Castilla
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- General Surgery Service, Reina Sofia University Hospital, Córdoba, Spain
| | | | - Antonio Casado-Díaz
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- CIBER Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - María A. Gálvez-Moreno
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
| | - Manuel D. Gahete
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
| | - José Manuel Quesada Gómez
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
| | - Roger Bouillon
- Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, Catholic University of Leuven, Leuven, Belgium
| | - Feliciano Priego-Capote
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- Department of Analytical Chemistry, University of Córdoba, Córdoba, Spain
- Chemical Institute for Energy and Environment (IQUEMA), University of Córdoba, Córdoba, Spain
- CIBER Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - Raúl M. Luque
- Maimonides Institute for Biomedical Research of Cordoba (IMIBIC), Córdoba, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
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Nițulescu IM, Ciulei G, Cozma A, Procopciuc LM, Orășan OH. From Innate Immunity to Metabolic Disorder: A Review of the NLRP3 Inflammasome in Diabetes Mellitus. J Clin Med 2023; 12:6022. [PMID: 37762961 PMCID: PMC10531881 DOI: 10.3390/jcm12186022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/14/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023] Open
Abstract
The role of the NLRP3 inflammasome is pivotal in the pathophysiology and progression of diabetes mellitus (DM), encompassing both type 1 (T1D), or type 2 (T2D). As part of the innate immune system, NLRP3 is also responsible for the chronic inflammation triggered by hyperglycemia. In both conditions, NLRP3 facilitates the release of interleukin-1β and interleukin-18. For T1D, NLRP3 perpetuates the autoimmune cascade, leading to the destruction of pancreatic islet cells. In T2D, its activation is associated with the presence of insulin resistance. NLRP3 activation is also instrumental for the presence of numerous complications associated with DM, microvascular and macrovascular. A considerable number of anti-diabetic drugs have demonstrated the ability to inhibit the NLRP3 inflammasome.
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Affiliation(s)
- Iris Maria Nițulescu
- Department 4 of Internal Medicine, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (I.M.N.); (A.C.); (O.H.O.)
| | - George Ciulei
- Department 4 of Internal Medicine, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (I.M.N.); (A.C.); (O.H.O.)
| | - Angela Cozma
- Department 4 of Internal Medicine, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (I.M.N.); (A.C.); (O.H.O.)
| | - Lucia Maria Procopciuc
- Department 2 of Molecular Sciences, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Olga Hilda Orășan
- Department 4 of Internal Medicine, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (I.M.N.); (A.C.); (O.H.O.)
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An Y, Xu BT, Wan SR, Ma XM, Long Y, Xu Y, Jiang ZZ. The role of oxidative stress in diabetes mellitus-induced vascular endothelial dysfunction. Cardiovasc Diabetol 2023; 22:237. [PMID: 37660030 PMCID: PMC10475205 DOI: 10.1186/s12933-023-01965-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/14/2023] [Indexed: 09/04/2023] Open
Abstract
Diabetes mellitus is a metabolic disease characterized by long-term hyperglycaemia, which leads to microangiopathy and macroangiopathy and ultimately increases the mortality of diabetic patients. Endothelial dysfunction, which has been recognized as a key factor in the pathogenesis of diabetic microangiopathy and macroangiopathy, is characterized by a reduction in NO bioavailability. Oxidative stress, which is the main pathogenic factor in diabetes, is one of the major triggers of endothelial dysfunction through the reduction in NO. In this review, we summarize the four sources of ROS in the diabetic vasculature and the underlying molecular mechanisms by which the pathogenic factors hyperglycaemia, hyperlipidaemia, adipokines and insulin resistance induce oxidative stress in endothelial cells in the context of diabetes. In addition, we discuss oxidative stress-targeted interventions, including hypoglycaemic drugs, antioxidants and lifestyle interventions, and their effects on diabetes-induced endothelial dysfunction. In summary, our review provides comprehensive insight into the roles of oxidative stress in diabetes-induced endothelial dysfunction.
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Affiliation(s)
- Ying An
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China
| | - Bu-Tuo Xu
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China
| | - Sheng-Rong Wan
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China
| | - Xiu-Mei Ma
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
| | - Yang Long
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China
| | - Yong Xu
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China.
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China.
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China.
| | - Zong-Zhe Jiang
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China.
- Metabolic Vascular Disease Key Laboratory of Sichuan Province, Luzhou, Sichuan, 646000, China.
- Sichuan Clinical Research Center for Nephropathy, Luzhou, Sichuan, 646000, China.
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Ren Y, Zhao D, Bo Y, Cheng J. Non-linear relationship between serum osteocalcin and diabetic retinopathy in postmenopausal women with type 2 diabetes mellitus. Clin Chim Acta 2023; 549:117552. [PMID: 37709110 DOI: 10.1016/j.cca.2023.117552] [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: 06/27/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is associated with diabetic retinopathy (DR), but effective interventions are lacking. The relationship between osteocalcin (OC) and DR in postmenopausal women with T2DM is understudied. METHODS This study examined 950 postmenopausal women with T2DM (T2DR group: n = 299; T2DM group: n = 651). RESULTS Significant differences (p < 0.05) were observed between the groups in disease duration, age, gender, body mass index (BMI), glycated haemoglobin (HbA1c), low-density lipoprotein (LDL-C), parathyroid hormone (PTH), total type I collagen amino acid-prolonging peptide (TPINP), OC, and 25 hydroxyvitamin D (25(OH)D3). Logistic regression revealed associations of LDL-C, PTH, and 25(OH)D3 with DR. A non-linear relationship (p < 0.05) between OC and DR was found. The lowest DR risk occurred at OC levels of 15.0-25.3 ng/ml (OR, 0.66; 95 % CI, 0.44, 0.98) compared to 11.1-15.0 ng/ml. Risk remained unchanged below 11.1 ng/ml or above 25.3 ng/ml. CONCLUSION In conclusion, among postmenopausal women with T2DM, OC levels showed a non-linear relationship with DR. Optimal OC levels (15.0-25.3 ng/ml) were associated with minimal DR occurrence, while risk was constant below 11.1 ng/ml or above 25.3 ng/ml. Maintaining optimal OC levels may reduce DR risk in this population.
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Affiliation(s)
- Yishu Ren
- Department of Endocrinology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Dan Zhao
- Department of Endocrinology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Yawen Bo
- Department of Endocrinology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Jinluo Cheng
- Department of Endocrinology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China.
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Li J, Yin L, Chen S, Li Z, Ding J, Wu J, Yang K, Xu J. The perspectives of NETosis on the progression of obesity and obesity-related diseases: mechanisms and applications. Front Cell Dev Biol 2023; 11:1221361. [PMID: 37649550 PMCID: PMC10465184 DOI: 10.3389/fcell.2023.1221361] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023] Open
Abstract
Obesity is a disease commonly associated with urbanization and can also be characterized as a systemic, chronic metabolic condition resulting from an imbalance between energy intake and expenditure. The World Health Organization (WHO) has identified obesity as the most serious chronic disease that is increasingly prevalent in the world population. If left untreated, it can lead to dangerous health issues such as hypertension, hyperglycemia, hyperlipidemia, hyperuricemia, nonalcoholic steatohepatitis, atherosclerosis, and vulnerability to cardiovascular and cerebrovascular events. The specific mechanisms by which obesity affects the development of these diseases can be refined to the effect on immune cells. Existing studies have shown that the development of obesity and its associated diseases is closely related to the balance or lack thereof in the number and function of various immune cells, of which neutrophils are the most abundant immune cells in humans, infiltrating and accumulating in the adipose tissues of obese individuals, whereas NETosis, as a newly discovered type of neutrophil-related cell death, its role in the development of obesity and related diseases is increasingly emphasized. The article reviews the significant role that NETosis plays in the development of obesity and related diseases, such as diabetes and its complications. It discusses the epidemiology and negative impacts of obesity, explains the mechanisms of NETosis, and examines its potential as a targeted drug to treat obesity and associated ailments.
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Affiliation(s)
- Jinyu Li
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lijia Yin
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Siyi Chen
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zelin Li
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiatong Ding
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiaqiang Wu
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kangping Yang
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jixiong Xu
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Clinical Research Center for Endocrine and Metabolic Disease, Nanchang, Jiangxi, China
- Jiangxi Branch of National Clinical Research Center for Metabolic Disease, Nanchang, Jiangxi, China
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21
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Iwasa M, Kato H, Iwashita K, Yamakage H, Kato S, Saito S, Ihara M, Nishimura H, Kawamoto A, Suganami T, Tanaka M, Satoh-Asahara N. Taxifolin Suppresses Inflammatory Responses of High-Glucose-Stimulated Mouse Microglia by Attenuating the TXNIP-NLRP3 Axis. Nutrients 2023; 15:2738. [PMID: 37375642 DOI: 10.3390/nu15122738] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Type 2 diabetes mellitus is associated with an increased risk of dementia, potentially through multifactorial pathologies, including neuroinflammation. Therefore, there is a need to identify novel agents that can suppress neuroinflammation and prevent cognitive impairment in diabetes. In the present study, we demonstrated that a high-glucose (HG) environment elevates the intracellular reactive oxygen species (ROS) levels and triggers inflammatory responses in the mouse microglial cell line BV-2. We further found that thioredoxin-interacting protein (TXNIP), a ROS-responsive positive regulator of the nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, was also upregulated, followed by NLRP3 inflammasome activation and subsequent interleukin-1beta (IL-1β) production in these cells. Conversely, caspase-1 was not significantly activated, suggesting the involvement of noncanonical pathways in these inflammatory responses. Moreover, our results demonstrated that taxifolin, a natural flavonoid with antioxidant and radical scavenging activities, suppressed IL-1β production by reducing the intracellular ROS levels and inhibiting the activation of the TXNIP-NLRP3 axis. These findings suggest the novel anti-inflammatory effects of taxifolin on microglia in an HG environment, which could help develop novel strategies for suppressing neuroinflammation in diabetes.
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Affiliation(s)
- Masayo Iwasa
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
| | - Hisashi Kato
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
| | - Kaori Iwashita
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
| | - Hajime Yamakage
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
| | - Sayaka Kato
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Satoshi Saito
- Department of Neurology, National Cerebral and Cardiovascular Center, Osaka 564-8565, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Osaka 564-8565, Japan
| | - Hideo Nishimura
- Translational Research Center for Medical Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan
| | - Atsuhiko Kawamoto
- Translational Research Center for Medical Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe 650-0047, Japan
| | - Takayoshi Suganami
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan
- Department of Immunometabolism, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Japan
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Nagoya 464-8601, Japan
- Center for One Medicine Innovative Translational Research, Gifu University Institute for Advanced Study, Gifu 501-1193, Japan
| | - Masashi Tanaka
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
- Department of Rehabilitation, Health Science University, Minamitsuru-gun 401-0380, Japan
| | - Noriko Satoh-Asahara
- Department of Endocrinology, Metabolism and Hypertension Research, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
- Department of Metabolic Syndrome and Nutritional Science, Research Institute of Environmental Medicine, Nagoya University, Nagoya 466-8550, Japan
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22
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Yang Y, Jiang G, Huang R, Liu Y, Chang X, Fu S. Targeting the NLRP3 inflammasome in diabetic retinopathy: From Pathogenesis to Therapeutic Strategies. Biochem Pharmacol 2023; 212:115569. [PMID: 37100255 DOI: 10.1016/j.bcp.2023.115569] [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: 03/06/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023]
Abstract
Diabetic retinopathy (DR) is a common diabetic microvascular complication and the main cause of vision loss in working-aged people. The NLRP3 inflammasome is a cytosolic multimeric complex that plays a significant role in innate immunity. After sensing injury, the NLRP3 inflammasome induces inflammatory mediator secretion and triggers a form of inflammatory cell death known as pyroptosis. Studies over the past five years have shown increased expression of NLRP3 and related inflammatory mediators in vitreous samples from DR patients at different clinical stages. Many NLRP3-targeted inhibitors have shown great antiangiogenic and anti-inflammatory effects in diabetes mellitus models, suggesting that the NLRP3 inflammasome is involved in the progression of DR. This review covers the molecular mechanisms of NLRP3 inflammasome activation. Furthermore, we discuss the implications of the NLRP3 inflammasome in DR, including the induction of pyroptosis and inflammation and the promotion of microangiopathy and retinal neurodegeneration. We also summarize the research progress on targeting the NLRP3 inflammasome in DR therapeutics with the expectation of providing new insights into DR progression and treatment.
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Affiliation(s)
- Yuxuan Yang
- The First Clinical Medical College, Lanzhou University, Lanzhou, The People's Republic of China, 730000
| | - Gengchen Jiang
- The First Clinical Medical College, Lanzhou University, Lanzhou, The People's Republic of China, 730000
| | - Runchun Huang
- The First Clinical Medical College, Lanzhou University, Lanzhou, The People's Republic of China, 730000
| | - Yi Liu
- The First Clinical Medical College, Lanzhou University, Lanzhou, The People's Republic of China, 730000
| | - Xingyu Chang
- The First Clinical Medical College, Lanzhou University, Lanzhou, The People's Republic of China, 730000
| | - Songbo Fu
- Department of Endocrinology, First Hospital of Lanzhou University, Lanzhou, Gansu, The People's Republic of China, 730000; Gansu Province Clinical Research Center for Endocrine Disease, Gansu, The People's Republic of China, 730000.
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23
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Zhang M, Ding ZX, Huang W, Luo J, Ye S, Hu SL, Zhou P, Cai B. Chrysophanol exerts a protective effect against Aβ 25-35-induced Alzheimer's disease model through regulating the ROS/TXNIP/NLRP3 pathway. Inflammopharmacology 2023; 31:1511-1527. [PMID: 36976486 DOI: 10.1007/s10787-023-01201-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 03/18/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND The primary pathogenic factors of Alzheimer's disease (AD) have been identified as oxidative stress, inflammatory damage, and apoptosis. Chrysophanol (CHR) has a good neuroprotective effect on AD, however, the potential mechanism of CHR remains unclear. PURPOSE In this study, we focused on the ROS/TXNIP/NLRP3 pathway to determine whether CHR regulates oxidative stress and neuroinflammation. METHODS D-galactose and Aβ25-35 combination were used to build an in vivo model of AD, and the Y-maze test was used to evaluate the learning and memory function of rats. Morphological changes of neurons in the rat hippocampus were observed using hematoxylin and eosin (HE) staining. AD cell model was established by Aβ25-35 in PC12 cells. The DCFH-DA test identified reactive oxygen species (ROS). The apoptosis rate was determined using Hoechst33258 and flow cytometry. In addition, the levels of MDA, LDH, T-SOD, CAT, and GSH in serum, cell, and cell culture supernatant were detected by colorimetric method. The protein and mRNA expressions of the targets were detected by Western blot and RT-PCR. Finally, molecular docking was used to further verify the in vivo and in vitro experimental results. RESULTS CHR could significantly improve learning and memory impairment, reduce hippocampal neuron damage, and reduce ROS production and apoptosis in AD rats. CHR could improve the survival rate, and reduce the oxidative stress and apoptosis in the AD cell model. Moreover, CHR significantly decreased the levels of MDA and LDH, and increased the activities of T-SOD, CAT, and GSH in the AD model. Mechanically, CHR significantly reduced the protein and mRNA expression of TXNIP, NLRP3, Caspase-1, IL-1β, and IL-18, and increase TRX. CONCLUSIONS CHR exerts neuroprotective effects on the Aβ25-35-induced AD model mainly by reducing oxidative stress and neuroinflammation, and the mechanism may be related to ROS/TXNIP/NLRP3 signaling pathway.
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Affiliation(s)
- Meng Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Zhi-Xian Ding
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Wei Huang
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Jing Luo
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Shu Ye
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Sheng-Lin Hu
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China
| | - Peng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China.
| | - Biao Cai
- Department of Integrated Traditional Chinese and Western Medicine, Key Laboratory of Xin'an Medicine (Anhui University of Chinese Medicine), Ministry of Education, Anhui University of Chinese Medicine, Hefei, 230012, People's Republic of China.
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24
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Lu S, Li Y, Qian Z, Zhao T, Feng Z, Weng X, Yu L. Role of the inflammasome in insulin resistance and type 2 diabetes mellitus. Front Immunol 2023; 14:1052756. [PMID: 36993972 PMCID: PMC10040598 DOI: 10.3389/fimmu.2023.1052756] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
The inflammasome is a protein complex composed of a variety of proteins in cells and which participates in the innate immune response of the body. It can be activated by upstream signal regulation and plays an important role in pyroptosis, apoptosis, inflammation, tumor regulation, etc. In recent years, the number of metabolic syndrome patients with insulin resistance (IR) has increased year by year, and the inflammasome is closely related to the occurrence and development of metabolic diseases. The inflammasome can directly or indirectly affect conduction of the insulin signaling pathway, involvement the occurrence of IR and type 2 diabetes mellitus (T2DM). Moreover, various therapeutic agents also work through the inflammasome to treat with diabetes. This review focuses on the role of inflammasome on IR and T2DM, pointing out the association and utility value. Briefly, we have discussed the main inflammasomes, including NLRP1, NLRP3, NLRC4, NLRP6 and AIM2, as well as their structure, activation and regulation in IR were described in detail. Finally, we discussed the current therapeutic options-associated with inflammasome for the treatment of T2DM. Specially, the NLRP3-related therapeutic agents and options are widely developed. In summary, this article reviews the role of and research progress on the inflammasome in IR and T2DM.
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Affiliation(s)
- Shen Lu
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Yanrong Li
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, China
- Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Zhaojun Qian
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Tiesuo Zhao
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, China
- Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, Henan, China
- Xinxiang Key Laboratory of Tumor Vaccine and Immunotherapy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Zhiwei Feng
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, China
- Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, Henan, China
- Xinxiang Key Laboratory of Tumor Vaccine and Immunotherapy, Xinxiang Medical University, Xinxiang, Henan, China
| | - Xiaogang Weng
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
- *Correspondence: Lili Yu, ; Xiaogang Weng,
| | - Lili Yu
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan, China
- Institute of Precision Medicine, Xinxiang Medical University, Xinxiang, Henan, China
- Xinxiang Key Laboratory of Tumor Vaccine and Immunotherapy, Xinxiang Medical University, Xinxiang, Henan, China
- *Correspondence: Lili Yu, ; Xiaogang Weng,
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25
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Ali FE, Ibrahim IM, Ghogar OM, Abd-alhameed EK, Althagafy HS, Hassanein EH. Therapeutic interventions target the NLRP3 inflammasome in ulcerative colitis: Comprehensive study. World J Gastroenterol 2023; 29:1026-1053. [PMID: 36844140 PMCID: PMC9950862 DOI: 10.3748/wjg.v29.i6.1026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/29/2022] [Accepted: 01/30/2023] [Indexed: 02/10/2023] Open
Abstract
One of the significant health issues in the world is the prevalence of ulcerative colitis (UC). UC is a chronic disorder that mainly affects the colon, beginning with the rectum, and can progress from asymptomatic mild inflammation to extensive inflammation of the entire colon. Understanding the underlying molecular mechanisms of UC pathogenesis emphasizes the need for innovative therapeutic approaches based on identifying molecular targets. Interestingly, in response to cellular injury, the NLR family pyrin domain containing 3 (NLRP3) inflammasome is a crucial part of the inflammation and immunological reaction by promoting caspase-1 activation and the release of interleukin-1β. This review discusses the mechanisms of NLRP3 inflammasome activation by various signals and its regulation and impact on UC.
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Affiliation(s)
- Fares E.M Ali
- Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Islam M. Ibrahim
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Osama M Ghogar
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Esraa K. Abd-alhameed
- Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 12345, Egypt
| | - Hanan S. Althagafy
- Department of Biochemistry, Faculty of Science, University of Jeddah, Jeddah 12345, Saudi Arabia
| | - Emad H.M. Hassanein
- Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
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26
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Piperine mitigates aortic vasculopathy in streptozotocin-diabetic rats via targeting TXNIP-NLRP3 signaling. Life Sci 2023; 314:121275. [PMID: 36496033 DOI: 10.1016/j.lfs.2022.121275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/27/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
Several in vivo and in vitro studies reported a favorable effect of piperine (PIP) on vascular function. However, the potential impacts of PIP on macrovasculopathy in streptozotocin (STZ)-diabetic rats have not yet been studied. Thirty-two Sprague Dawley rats were used (n= 8/group). STZ-administered rats (50 mg/kg once, i.p) received PIP (30 mg/kg/day, orally) or its vehicle starting from day 15 till the end of the study (10 weeks). Control groups consisted of age-matched normal rats with or without PIP treatment. Metabolic and oxidative stress parameters were biochemically determined. Aortas were histologically examined. Ex vivo aortic reactivity to phenylephrine and acetylcholine was studied. Components of the TXNIP-NLRP3 pathway were assessed using real-time PCR, ELISA, and immunohistochemistry. Two-way ANOVA was used to compare groups. Statistical significance was set at P < 0.05. PIP treatment of diabetic rats significantly reduced levels of fasting glycemia, HbA1c, and serum AGEs, TGs, TC, and LDL-C compared to control diabetic group. PIP diminished aortic endothelial denudation and fibrous tissue proliferation compared to control STZ aortas. PIP lessened aortic contractility to phenylephrine and improved aortic relaxation to acetylcholine relative to untreated STZ group. PIP administration to diabetic rats elicited significant enhancements in GSH and SOD levels, eNOS expression, and total nitrate/nitrite bioavailability compared to untreated STZ rats. Moreover, PIP attenuated aortic contents of ROS, MDA, TXNIP protein and mRNA, NF-κB p65 mRNA, NLRP3 mRNA, IL-1β protein, and caspase-3 and TNF-α expressions compared to untreated STZ levels. In conclusion, PIP might ameliorate diabetes-associated functional and structural aortic remodeling by targeting TXNIP-NLRP3 signaling.
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27
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Xue Y, Gan B, Zhou Y, Wang T, Zhu T, Peng X, Zhang X, Zhou Y. Advances in the Mechanistic Study of the Control of Oxidative Stress Injury by Modulating HDAC6 Activity. Cell Biochem Biophys 2023; 81:127-139. [PMID: 36749475 PMCID: PMC9925596 DOI: 10.1007/s12013-022-01125-w] [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: 11/02/2022] [Accepted: 12/14/2022] [Indexed: 02/08/2023]
Abstract
Oxidative stress is defined as an injury resulting from a disturbance in the dynamic equilibrium of the redox environment due to the overproduction of active/radical oxygen exceeding the antioxidative ability of the body. This is a key step in the development of various diseases. Oxidative stress is modulated by different factors and events, including the modification of histones, which are the cores of nucleosomes. Histone modification includes acetylation and deacetylation of certain amino acid residues; this process is catalyzed by different enzymes. Histone deacetylase 6 (HDAC6) is a unique deacetylating protease that also catalyzes the deacetylation of different nonhistone substrates to regulate various physiologic processes. The intimate relationship between HDAC6 and oxidative stress has been demonstrated by different studies. The present paper aims to summarize the data obtained from a mechanistic study of HDAC6 and oxidative stress to guide further investigations on mechanistic characterization and drug development.
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Affiliation(s)
- Yuanye Xue
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Bing Gan
- grid.410560.60000 0004 1760 3078The Third Affiliated Hospital of Guangdong Medical University, Fo Shan, 528000 Guangdong China
| | - Yanxing Zhou
- grid.410560.60000 0004 1760 3078School of Medical Technology, Guangdong Medical University, Dongguan, 523808 China
| | - Tingyu Wang
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Tong Zhu
- grid.410560.60000 0004 1760 3078Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808 China
| | - Xinsheng Peng
- Biomedical Innovation Center, Guangdong Medical University, Dongguan, 523808, China. .,Institute of Marine Medicine, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Xiangning Zhang
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
| | - Yanfang Zhou
- Department of Pathophysiology, Guangdong Medical University, Dongguan, 523808, China.
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28
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Shin CS, Veettil RA, Sakthivel TS, Adumbumkulath A, Lee R, Zaheer M, Kolanthai E, Seal S, Acharya G. Noninvasive Delivery of Self-Regenerating Cerium Oxide Nanoparticles to Modulate Oxidative Stress in the Retina. ACS APPLIED BIO MATERIALS 2022; 5:5816-5825. [PMID: 36441967 DOI: 10.1021/acsabm.2c00809] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diseases affecting the retina, such as age-related macular degeneration (AMD), diabetic retinopathy, macular edema, and retinal vein occlusions, are currently treated by the intravitreal injection of drug formulations. These disease pathologies are driven by oxidative damage due to chronic high concentrations of reactive oxygen species (ROS) in the retina. Intravitreal injections often induce retinal detachment, intraocular hemorrhage, and endophthalmitis. Furthermore, the severe eye pain associated with these injections lead to patient noncompliance and treatment discontinuation. Hence, there is a critical need for the development of a noninvasive therapy that is effective for a prolonged period for treating retinal diseases. In this study, we developed a noninvasive cerium oxide nanoparticle (CNP) delivery wafer (Cerawafer) for the modulation of ROS in the retina. We fabricated Cerawafer loaded with CNP and determined its SOD-like enzyme-mimetic activity and ability to neutralize ROS generated in vitro. We demonstrated Cerawafer's ability to deliver CNP in a noninvasive fashion to the retina in healthy mouse eyes and the CNP retention in the retina for more than a week. Our studies have demonstrated the in vivo efficacy of the Cerawafer to modulate ROS and associated down-regulation of VEGF expression in the retinas of very-low-density lipoprotein receptor knockout (vldlr-/-) mouse model. The development of a Cerawafer nanotherapeutic will fulfill a hitherto unmet need. Currently, there is no such therapeutic available, and the development of a Cerawafer nanotherapeutic will be a major advancement in the treatment of retinal diseases.
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Affiliation(s)
- Crystal S Shin
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Remya Ammassam Veettil
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Tamil S Sakthivel
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering, Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32816, United States
| | - Aparna Adumbumkulath
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States.,Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77030, United States
| | - Richard Lee
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Mahira Zaheer
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Elayaraja Kolanthai
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering, Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32816, United States
| | - Sudipta Seal
- Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering, Nanoscience Technology Center, University of Central Florida, Orlando, Florida 32816, United States.,College of Medicine, Biionix Cluster, University of Central Florida, Orlando, Florida 32827, United States
| | - Ghanashyam Acharya
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States.,Department of Ophthalmology, Baylor College of Medicine, Houston, Texas 77030, United States.,Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77030, United States
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Wang M, Sheng KJ, Fang JC, Zhao H, Lu SM, Liu ZY, Chen BT. Redox signaling in diabetic retinopathy and opportunity for therapeutic intervention through natural products. Eur J Med Chem 2022; 244:114829. [DOI: 10.1016/j.ejmech.2022.114829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/14/2022] [Accepted: 10/01/2022] [Indexed: 11/28/2022]
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Wen D, Ren X, Li H, He Y, Hong Y, Cao J, Zheng C, Dong L, Li X. Low expression of RBP4 in the vitreous humour of patients with proliferative diabetic retinopathy who underwent Conbercept intravitreal injection. Exp Eye Res 2022; 225:109197. [PMID: 35932904 DOI: 10.1016/j.exer.2022.109197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/12/2022] [Accepted: 07/18/2022] [Indexed: 12/29/2022]
Abstract
Intravitreal injection of anti-VEGF antibodies has been widely used in the treatment of proliferative diabetic retinopathy (PDR). However, anti-VEGF drugs can exacerbate fibrosis and eventually lead to retinal detachment. To explore proteins closely related to fibrosis, we conducted proteomic analysis of human vitreous humour collected from PDR patients who have or have not intravitreal Conbercept (IVC) injection. Sixteen vitreous humour samples from PDR patients with preoperative IVC and 20 samples from those without preoperative IVC were examined. An immunodepletion kit was used to remove high-abundance vitreous proteins. Conbercept-induced changes were determined using a tandem mass tag-based quantitative proteomic strategy. Enzyme-linked immunosorbent assays were performed to confirm the concentrations of selected proteins and validate the proteomic results. Based on a false discovery rate between 0.05% and -0.05% and a fold-change > 1.5, 97 proteins were altered (49 higher levels and 48 lower levels) in response to IVC. Differentially expressed proteins were found in the extracellular and intracellular regions and were found to be involved in VEGF binding and VEGF-activated receptor activity. Protein-protein interactions indicated associations with fibrosis, neovascularisation and inflammatory signalling pathways. We found the low levels of RBP4 in the vitreous humour of PDR patients with IVC injection, as revealed by ELISA and proteomic profiling. Moreover, RBP4 significantly restored the mitochondrial function of HRMECs induced by AGEs and down regulated the level of glycolysis. Our study is the first to report that RBP4 decreases in the vitreous humour of PDR patients who underwent Conbercept treatment, thereby verifying the role of RBP4 in glucose metabolism. Results provide evidence for the potential mechanism underlying Conbercept-related fibrosis.
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Affiliation(s)
- Dejia Wen
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Xinjun Ren
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Hui Li
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Ye He
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Yaru Hong
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Jingjing Cao
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Chuanzhen Zheng
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China
| | - Lijie Dong
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China.
| | - Xiaorong Li
- Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China; Tianjin Branch of National Clinical Research Center for Ocular Disease, Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, 300384, Tianjin, China.
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31
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Xiaodong L, Xuejun X. GSDMD-mediated pyroptosis in retinal vascular inflammatory diseases: a review. Int Ophthalmol 2022; 43:1405-1411. [PMID: 36068399 DOI: 10.1007/s10792-022-02506-z] [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: 04/12/2022] [Accepted: 08/28/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Pyroptosis is a newly discovered form of programmed pro-inflammatory cell death. The main signaling pathways include the classical scorch death pathway that depends on NLRP3 inflammatory vesicles and other activation caspase-1 and the non-classical scorch death pathway that depends on caspase-4 /5/11. The substrate of all inflammatory caspases is GSDMD; a large number of studies have confirmed that pyroptosis is associated with certain infectious diseases, atherosclerotic diseases, metabolic diseases, and aseptic inflammatory diseases of important organs. In recent years, pyroptosis has been studied partially in the ocular field. So, this article reviews the recent literature intending to help readers understand the main mechanisms of cellular scorch death and the progress of GSDMD-mediated cellular scorch death in retinal vascular inflammatory diseases. METHOD A detailed review of the literature related to pyroptosis and inflammatory diseases of the retinal vasculature is presented. The following 6 electronic databases were searched: CNKI, Wanfang, VIP, PubMed, The Cochrane Library, and Embase Databases, and the search period was from the database to May 2022. The main search keywords include "Pyroptosis," " GSDMD," "Retinal Vascular Inflammatory Disease," "Diabetic retinopathy," "Retinal vasculitis." The discovery of pyroptosis, the main molecular mechanisms, key proteins, and their pathogenesis and therapeutic prospects in retinal vasculitis diseases are extensively studied and summarized. RESULT The mechanisms of gasdermin D-mediated pyroptosis are elaborated and analyzed, with particular emphasis on their key role and potential in the pathogenesis and treatment of inflammatory retinal vascular lesions. CONCLUSION Gasdermin D-mediated pyroptosis is a well-studied form of programmed pro-inflammatory cell death, which has a bidirectional regulatory effect on a variety of immune and inflammatory diseases. The literature reveals that pyroptosis is closely related to the pathogenesis of retinal vascular inflammatory diseases, and it may be an important therapeutic target for diabetic retinopathy and other retinal vasculitis eye diseases in the future.
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Affiliation(s)
- Li Xiaodong
- Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan, China
| | - Xie Xuejun
- Department of Ophthalmology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan, People's Republic of China.
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Lazzara F, Longo AM, Giurdanella G, Lupo G, Platania CBM, Rossi S, Drago F, Anfuso CD, Bucolo C. Vitamin D3 preserves blood retinal barrier integrity in an in vitro model of diabetic retinopathy. Front Pharmacol 2022; 13:971164. [PMID: 36091806 PMCID: PMC9458952 DOI: 10.3389/fphar.2022.971164] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/25/2022] [Indexed: 11/15/2022] Open
Abstract
The impairment of the blood retinal barrier (BRB) represents one of the main features of diabetic retinopathy, a secondary microvascular complication of diabetes. Hyperglycemia is a triggering factor of vascular cells damage in diabetic retinopathy. The aim of this study was to assess the effects of vitamin D3 on BRB protection, and to investigate its regulatory role on inflammatory pathways. We challenged human retinal endothelial cells with high glucose (HG) levels. We found that vitamin D3 attenuates cell damage elicited by HG, maintaining cell viability and reducing the expression of inflammatory cytokines such as IL-1β and ICAM-1. Furthermore, we showed that vitamin D3 preserved the BRB integrity as demonstrated by trans-endothelial electrical resistance, permeability assay, and cell junction morphology and quantification (ZO-1 and VE-cadherin). In conclusion this in vitro study provided new insights on the retinal protective role of vitamin D3, particularly as regard as the early phase of diabetic retinopathy, characterized by BRB breakdown and inflammation.
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Affiliation(s)
- Francesca Lazzara
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Anna Maria Longo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Giovanni Giurdanella
- Faculty of Medicine and Surgery, University of Enna “Kore”, Enna, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
| | - Gabriella Lupo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
| | - Chiara Bianca Maria Platania
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
| | - Settimio Rossi
- Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Filippo Drago
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
| | - Carmelina Daniela Anfuso
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
| | - Claudio Bucolo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
- Center for Research in Ocular Pharmacology–CERFO, University of Catania, Catania, Italy
- *Correspondence: Claudio Bucolo,
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Liu C, Dong W, Lv Z, Kong L, Ren X. Thioredoxin-interacting protein in diabetic retinal neurodegeneration: A novel potential therapeutic target for diabetic retinopathy. Front Neurosci 2022; 16:957667. [PMID: 36017183 PMCID: PMC9396221 DOI: 10.3389/fnins.2022.957667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/19/2022] [Indexed: 11/13/2022] Open
Abstract
Diabetic retinopathy (DR) is a common complication of diabetes mellitus and has been considered a microvascular disease for a long time. However, recent evidence suggests that diabetic retinal neurodegeneration (DRN), which manifests as neuronal apoptosis, a decrease in optic nerve axons, and reactive gliosis, occurs prior to retinal microvascular alterations. Thioredoxin-interacting protein (TXNIP) is an endogenous inhibitor of thioredoxin (Trx), and it acts by inhibiting its reducing capacity, thereby promoting cellular oxidative stress. In addition, it participates in regulating multiple signaling pathways as a member of the α-arrestin family of proteins. Accumulating evidence suggests that TXNIP is upregulated in diabetes and plays a pivotal role in the pathophysiological process of DR. In this review, we summarized the role of TXNIP in DRN, aiming to provide evidence for DR treatment in the future.
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Affiliation(s)
- Chengzhi Liu
- The First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Histology and Embryology, College of Basic Medicine, Dalian Medical University, Dalian, China
| | - Wenkang Dong
- Department of Histology and Embryology, College of Basic Medicine, Dalian Medical University, Dalian, China
| | - Zhengshuai Lv
- The First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Zhengshuai Lv,
| | - Li Kong
- Department of Histology and Embryology, College of Basic Medicine, Dalian Medical University, Dalian, China
- Li Kong,
| | - Xiang Ren
- Department of Histology and Embryology, College of Basic Medicine, Dalian Medical University, Dalian, China
- Xiang Ren,
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Chen M, Rong R, Xia X. Spotlight on pyroptosis: role in pathogenesis and therapeutic potential of ocular diseases. J Neuroinflammation 2022; 19:183. [PMID: 35836195 PMCID: PMC9281180 DOI: 10.1186/s12974-022-02547-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022] Open
Abstract
Pyroptosis is a programmed cell death characterized by swift plasma membrane disruption and subsequent release of cellular contents and pro-inflammatory mediators (cytokines), including IL‐1β and IL‐18. It differs from other types of programmed cell death such as apoptosis, autophagy, necroptosis, ferroptosis, and NETosis in terms of its morphology and mechanism. As a recently discovered form of cell death, pyroptosis has been demonstrated to be involved in the progression of multiple diseases. Recent studies have also suggested that pyroptosis is linked to various ocular diseases. In this review, we systematically summarized and discussed recent scientific discoveries of the involvement of pyroptosis in common ocular diseases, including diabetic retinopathy, age-related macular degeneration, AIDS-related human cytomegalovirus retinitis, glaucoma, dry eye disease, keratitis, uveitis, and cataract. We also organized new and emerging evidence suggesting that pyroptosis signaling pathways may be potential therapeutic targets in ocular diseases, hoping to provide a summary of overall intervention strategies and relevant multi-dimensional evaluations for various ocular diseases, as well as offer valuable ideas for further research and development from the perspective of pyroptosis.
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Affiliation(s)
- Meini Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China. .,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China. .,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China.
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Maghbooli Z, Ebrahimi Meimand S, Malek Hosseini AA, Shirvani A. Alterations in circulating levels of vitamin D binding protein, total and bioavailability of vitamin D in diabetic retinopathy patients. BMC Endocr Disord 2022; 22:169. [PMID: 35778716 PMCID: PMC9250226 DOI: 10.1186/s12902-022-01084-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 06/22/2022] [Indexed: 12/04/2022] Open
Abstract
AIMS This study aimed to investigate the association between circulating levels of vitamin D binding protein (VDBP) and its genotypes and diabetic retinopathy risk. METHODS This case-control study recruited 154 patients with type 2 diabetes mellitus; 62 with diabetic retinopathy (DR) and 92 without DR and diabetic nephropathy (DN). Circulating levels of 25-hydroxyvitamin D3 and VDBP levels were measured in the patients. The genotype and phenotype of VDBP were evaluated based on two common VDBP variations; rs7041 and rs4588. RESULTS Serum levels of VDBP were significantly lower in patients with DR than in patients without DR and/or DN (Ln-VDBP (μg/ml): 6.14 ± 0.92 vs. 6.73 ± 1.45, p = 0.001) even after adjustment for age, sex, body mass index, disease duration, estimated glomerular filtration rate (eGFR), HbA1C, insulin therapy profile, and serum levels of 25(OH)D. The distribution of VDBP phenotypes and genotypes in the two studied groups were nearly the same, and the distribution was similar to that of the general population. CONCLUSIONS In this study, we found the association between lower circulating levels of VDBP and risk of DR. However, the precise mechanism linking these two remains unknown. Further and more in-depth research is needed to find out the underlying causes of the relationship.
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Affiliation(s)
- Zhila Maghbooli
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | | | - Ali-Asghar Malek Hosseini
- Endocrinology and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Vitamin D, the Vitamin D Receptor, Calcitriol Analogues and Their Link with Ocular Diseases. Nutrients 2022; 14:nu14112353. [PMID: 35684153 PMCID: PMC9183042 DOI: 10.3390/nu14112353] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/03/2022] [Accepted: 06/03/2022] [Indexed: 11/21/2022] Open
Abstract
The global prevalence of eye diseases continues to grow, bringing with it a reduction in the activity levels and quality of life of patients, and partial or complete blindness if left untreated. As such, there is considerable interest in identifying more effective therapeutic options and preventive agents. One such agent is vitamin D, known to have a range of anti-cancer, anti-angiogenic, anti-inflammatory and anti-oxidative properties, and whose deficiency is linked to the pathogenesis of a range of cardiovascular, cancer, and inflammatory diseases. This review presents the current stage of knowledge concerning the link between vitamin D and its receptor and the occurrence of eye disease, as well as the influence of analogues of calcitriol, an active metabolite of vitamin D. Generally, patients affected by various ocular disorders have vitamin D deficiency. In addition, previous findings suggest that vitamin D modulates the course of eye diseases and may serve as a marker, and that its supplementation could mitigate some disorders. However, as these studies have some limitations, we recommend further randomized trials to clarify the link between vitamin D and its activity with eye disease.
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Phillips EA, Hendricks N, Bucher M, Maloyan A. Vitamin D Supplementation Improves Mitochondrial Function and Reduces Inflammation in Placentae of Obese Women. Front Endocrinol (Lausanne) 2022; 13:893848. [PMID: 35712242 PMCID: PMC9195071 DOI: 10.3389/fendo.2022.893848] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/25/2022] [Indexed: 11/15/2022] Open
Abstract
Background About 30% of women entering pregnancy in the US are obese. We have previously reported mitochondrial dysregulation and increased inflammation in the placentae of obese women. Vitamin D (VitD) is a major player in calcium uptake and was shown to modulate mitochondrial respiration and the immune/inflammation system. Studies show decreased VitD levels in obese individuals; however, the effect of maternal obesity on VitD metabolism and its association with placental function remains understudied. Methods Maternal and cord blood plasma and placental samples were collected upon C-section from normal-weight (NW, body mass index [BMI]<25) and obese (OB, BMI>30) women with uncomplicated pregnancies at term. We measured 25(OH)D3 (calcidiol) levels in maternal and cord blood plasma using ELISA. We assessed the expression of CYP27B1, an activator of calcidiol, and Vitamin D receptor (VDR) in placentae from NW and OB, and women with gestational diabetes and preeclampsia. In addition, we examined the effects of VitD supplementation on mitochondrial function and inflammation in trophoblasts from NW and OB, using the Seahorse Bioanalyzer and Western blot, respectively. Results Vitamin D levels in blood from OB but not NW women and in cord blood from babies born to NW and OB women showed a significant inverse correlation with maternal pre-pregnancy BMI (r=-0.50, p<0.1 and r=-0.55, p=0.004 respectively). Cord plasma VitD levels showed a positive correlation with placental efficiency, i.e., the ratio between fetal and placental weight, as well as with maternal blood VitD levels (r=0.69 and 0.83 respectively, p<0.00). While we found no changes in CYP27B1 in OB vs. NW women, VDR expression were decreased by 50% (p<0.03) independent of fetal sex. No changes in VDR expression relative to BMI-matched controls were observed in the placentae of women with gestational diabetes or preeclampsia. Cytotrophoblasts isolated from placentae of OB women showed a dose-dependent increase in VDR expression after 24-hour treatment with calcitriol (10 nM and 100 nM), an active form of VitD. Trophoblasts isolated from OB women and treated with calcitriol improved mitochondrial respiration (p<0.05). We also found a two-fold increase in expression of the NLRP3 inflammasome and the pro-inflammatory cytokine IL-18 in trophoblasts isolated from placentae of OB women (p<0.05), with IL-18 expression being reversed by calcitriol treatment (100 nM). Conclusions We show that VitD deficiency is at least partially responsible for mitochondrial dysfunction and increased inflammation in the placentae of obese women. Vitamin D supplementation could be beneficial in improving placental dysfunction seen in obese women.
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Affiliation(s)
- Elysse A. Phillips
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, United States
| | - Nora Hendricks
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, United States
| | - Matthew Bucher
- Department of OB/GYN, Oregon Health and Science University, Portland, OR, United States
| | - Alina Maloyan
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, United States
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Zhu D, Zou W, Cao X, Xu W, Lu Z, Zhu Y, Hu X, Hu J, Zhu Q. Ferulic acid attenuates high glucose-induced apoptosis in retinal pigment epithelium cells and protects retina in db/db mice. PeerJ 2022; 10:e13375. [PMID: 35669949 PMCID: PMC9165606 DOI: 10.7717/peerj.13375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 04/13/2022] [Indexed: 01/13/2023] Open
Abstract
Background Herein, we aimed to present evidence that Ferulic acid (FA), a phenolic acid, can alleviate high glucose (HG)-induced retinal pigment epithelium (RPE) cell apoptosis and protect retina in db/db mice. Methods ARPE-19 cells (a human RPE cell line) were divided into four groups: control group; HG group (30 mmol/L glucose); HG+FA group (30 mmol/L glucose and 10 mmol/L FA). Cell viability and apoptosis were detected using CCK-8 and Annexin-5 staining, respectively. Apoptosis-related markers including P53, BAX and Bcl2 were examined by RT-qPCR, western blot and immunohistochemistry. Totally, 30 male db/db mice were randomly divided into db/db group (5 ml/kg saline) and FA group (0.05 g/kg FA). After treatment for 2 months, retinal samples were subjected to hematoxylin and eosin (H&E) and Masson staining. Moreover, immunofluorescence was used to detect apoptosis-related markers. Blood samples were collected for measuring cholesterol, triglyceride (TG), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) levels. Results FA treatment markedly increased cell viability and suppressed cell apoptosis of ARPE-19 cells compared to the HG-exposed group. Furthermore, FA ameliorated the abnormal expression levels of P53, BAX and Bcl2 in HG-induced ARPE-19 cells. In animal models, FA attenuated pathological changes in the retina tissues of diabetic mice. Consistent with in vitro models, FA significantly ameliorated the expression of apoptosis-related markers in retina tissues. Biochemical test results showed that FA reduced hyperlipidemia in diabetic mice. Conclusion Our findings suggest that FA alleviates HG-induced apoptosis in RPE cells and protects retina in db/db mice, which can be associated with P53 and BAX inactivation and Bcl2 activation.
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Affiliation(s)
- Dejun Zhu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Wenqing Zou
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Xiangmei Cao
- Department of Pathology, School of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia, China
| | - Weigang Xu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Zhaogang Lu
- Department of Pharmacy, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China
| | - Yan Zhu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Xiaowen Hu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Jin Hu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
| | - Qing Zhu
- Department of Ophthalmology, Ning Xia Eye Hospital, People’s Hospital of Ningxia Hui Autonomous Region (First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye), Yinchuan, Ningxia, China
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Liu Z, Jiang H, Townsend JH, Wang J. Improved Retinal Microcirculation in Mild Diabetic Retinopathy Patients Carrying MTHFR Polymorphisms Who Received the Medical Food, Ocufolin ®. Clin Ophthalmol 2022; 16:1497-1504. [PMID: 35607436 PMCID: PMC9123245 DOI: 10.2147/opth.s358753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/11/2022] [Indexed: 02/03/2023] Open
Abstract
Purpose To evaluate the effects of Ocufolin® on retinal microcirculation in patients with mild diabetic retinopathy carrying MTHFR polymorphisms. Methods In a prospective, case-controlled study, eight patients with mild diabetic retinopathy and MTHFR polymorphisms and 15 normal controls (NC) were recruited. MTHFR polymorphisms were subtyped as normal, C677T, or A1298C. Best-corrected visual acuity (BCVA) was evaluated. Retinal blood flow velocity (BFV) was measured using Retinal Function Imager. Retinal tissue perfusion (RTP, blood flow rate per inner retinal volume) was calculated within a 2.5 mm diameter circle centered on the fovea. The eight retinopathy patients received Ocufolin® for 6 months, and their imaging was performed at baseline, 4 months, and 6 months. The NC group was imaged once. Results BCVA and vascular indices of DR + PM patients at baseline were below those of NC and improved after Ocufolin® administration. Compared to baseline, DR + PM patients had significantly improved BCVA during the follow-up period (P < 0.05). RTP and arteriolar BFV were significantly increased at 6 months (P < 0.05), approaching NC. Conclusion Ocufolin® may be effective in improving both visual acuity and retinal microcirculation in patients with DR + PM. Further studies with increasing sample size, and longer duration, including cases with severe DR, are needed.
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Affiliation(s)
- Zhiping Liu
- Ophthalmic Center, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People’s Republic of China
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Hong Jiang
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Justin H Townsend
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jianhua Wang
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
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Li Q, Hua X, Li L, Zhou X, Tian Y, Deng Y, Zhang M, Yuan X, Chi W. AIP1 suppresses neovascularization by inhibiting the NOX4-induced NLRP3/NLRP6 imbalance in a murine corneal alkali burn model. Cell Commun Signal 2022; 20:59. [PMID: 35524333 PMCID: PMC9074213 DOI: 10.1186/s12964-022-00877-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/07/2022] [Indexed: 12/05/2022] Open
Abstract
Background Apoptosis signal-regulating kinase 1-interacting protein 1 (AIP1) participates in inflammatory neovascularization induction. NADPH oxidase 4 (NOX4) produces reactive oxygen species (ROS), leading to an imbalance in nucleotide-binding oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3) and NLR family pyrin domain containing 6 (NLRP6) expression. The mechanisms of AIP1, NOX4, ROS and inflammasomes in corneal neovascularization were studied herein. Methods C57BL/6 and AIP1-knockout mice were used in this study. The alkali burn procedure was performed on the right eye. Adenovirus encoding AIP1 plus green fluorescence protein (GFP) (Ad-AIP1-GFP) or GFP alone was injected into the right anterior chamber, GLX351322 was applied as a NOX4 inhibitor, and then corneal neovascularization was scored. The expression of related genes was measured by quantitative real-time polymerase chain reaction, western blotting and immunofluorescence staining. 2′,7′-Dichlorofluorescin diacetate staining was used to determine the ROS levels. Results The expression of AIP1 was decreased, while that of cleaved interleukin-1β (clv-IL-1β) and vascular endothelial growth factor A (VEGFa) was increased after alkali burn injury. NOX4 expression was increased, the imbalance in NLRP3/NLRP6 was exacerbated, and corneal neovascularization was increased significantly in AIP1-knockout mice compared with those in C57BL/6 mice after alkali burns. These effects were reversed by AIP1 overexpression. NLRP3/NLRP6 expression was imbalanced after alkali burns. GLX351322 reversed the imbalance in NLRP3/NLRP6 by reducing the ROS levels. This treatment also reduced the expression of clv-IL-1β and VEGFa, suppressing neovascularization. Conclusions AIP1 and NOX4 can regulate corneal inflammation and neovascularization after alkali burn injury. Based on the pathogenesis of corneal neovascularization, these findings are expected to provide new therapeutic strategies for patients. Plain English summary Corneal alkali burn injury is a common type of ocular injury that is difficult to treat in the clinic. The cornea is a clear and avascular tissue. Corneal neovascularization after alkali burn injury is a serious complication; it not only seriously affects the patient’s vision but also is the main reason for failed corneal transplantation. Corneal neovascularization affects approximately 1.4 million patients a year. We show for the first time that AIP1 and NOX4 can regulate corneal inflammation and neovascularization after alkali burns. The expression of AIP1 was decreased, while that of clv-IL-1β and VEGFa was increased after alkali burns. We tried to elucidate the specific molecular mechanisms by which AIP1 regulates corneal neovascularization. NOX4 activation was due to decreased AIP1 expression in murine corneas with alkali burns. NOX4 expression was increased, the imbalance in NLRP3/NLRP6 was exacerbated, and corneal neovascularization was increased significantly in AIP1-knockout mice compared with those in C57BL/6 mice after alkali burns. These effects were reversed by AIP1 overexpression. Additionally, NLRP3/NLRP6 expression was unbalanced, with NLRP3 activation and NLRP6 suppression in the corneal alkali burn murine model. Eye drops containing GLX351322, a NOX4 inhibitor, reversed the imbalance in NLRP3/NLRP6 by reducing ROS expression. This treatment also reduced the expression of clv-IL-1β and VEGFa, reducing neovascularization. Therefore, we provide new gene therapeutic strategies for patients. With the development of neovascularization therapy, we believe that in addition to corneal transplantation, new drug or gene therapies can achieve better results. Video Abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s12964-022-00877-5.
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Affiliation(s)
- Qingyu Li
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Xia Hua
- Tianjin Aier Eye Hospital, Tianjin University, Tianjin, China
| | - Liangpin Li
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Xueyan Zhou
- School of Medicine, Nankai University, Tianjin, China
| | - Ye Tian
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China
| | - Yang Deng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Min Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Xiaoyong Yuan
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China. .,Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin Eye Hospital, Tianjin, China.
| | - Wei Chi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
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Gao J, Xia L, Wei Y. Oxymatrine inhibits the pyroptosis in rat insulinoma cells by affecting nuclear factor kappa B and nuclear factor (erythroid-derived 2)-like 2 protein/heme oxygenase-1 pathways. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2022; 26:165-174. [PMID: 35477544 PMCID: PMC9046894 DOI: 10.4196/kjpp.2022.26.3.165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 01/11/2022] [Accepted: 02/04/2022] [Indexed: 11/15/2022]
Abstract
As the mechanism underlying glucose metabolism regulation by oxymatrine is unclear, this study investigated the effects of oxymatrine on pyroptosis in INS-1 cells. Flow cytometry was employed to examine cell pyroptosis and reactive oxygen species (ROS) production. Cell pyroptosis was also investigated via transmission electron microscopy and lactate dehydrogenase (LDH) release. Protein levels were detected using western blotting and interleukin (IL)-1β and IL-18 secretion by enzyme-linked immunosorbent assay. The caspase-1 activity and DNA-binding activity of nuclear factor kappa B (NF-κB) and nuclear factor (erythroid-derived 2)-like 2 protein (Nrf2) were also assessed. In the high glucose and high fat-treated INS-1 cells (HG + PA), the caspase-1 activity and LDH content, as well as Nod-like receptor family pyrin domain containing 3, Gsdmd-N, caspase-1, apoptosis-associated speck-like protein containing a CARD, IL-1β, and IL-18 levels were increased. Moreover, P65 protein levels increased in the nucleus but decreased in the cytoplasm. Oxymatrine attenuated these effects and suppressed high glucose and high fat-induced ROS production. The increased levels of nuclear Nrf2 and heme oxygenase-1 (HO-1) in the HG + PA cells were further elevated after oxymatrine treatment, whereas cytoplasmic Nrf2 and Keleh-like ECH-associated protein levels decreased. Additionally, the elevated transcriptional activity of p65 in HG + PA cells was reduced by oxymatrine, whereas that of Nrf2 increased. The results indicate that the inhibition of pyroptosis in INS-1 cells by oxymatrine, a key factor in its glucose metabolism regulation, involves the suppression of the NF-κB pathway and activation of the Nrf2/HO-1 pathway.
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Affiliation(s)
- Jingying Gao
- Department of Pediatrics, Shanxi Medical University, Taiyuan 030001, China.,Pediatric Internal Medicine, Children's Hospital of Shanxi Province, Shanxi Medical University, Taiyuan 030001, China
| | - Lixia Xia
- Department of Pediatrics, Shanxi Medical University, Taiyuan 030001, China
| | - Yuanyuan Wei
- Department of Pediatrics, Shanxi Medical University, Taiyuan 030001, China.,Pediatric Internal Medicine, Children's Hospital of Shanxi Province, Shanxi Medical University, Taiyuan 030001, China
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Yan L, Vaghari-Tabari M, Malakoti F, Moein S, Qujeq D, Yousefi B, Asemi Z. Quercetin: an effective polyphenol in alleviating diabetes and diabetic complications. Crit Rev Food Sci Nutr 2022; 63:9163-9186. [PMID: 35468007 DOI: 10.1080/10408398.2022.2067825] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Various studies, especially in recent years, have shown that quercetin has beneficial therapeutic effects in various human diseases, including diabetes. Quercetin has significant anti-diabetic effects and may be helpful in lowering blood sugar and increasing insulin sensitivity. Quercetin appears to affect many factors and signaling pathways involved in insulin resistance and the pathogenesis of type 2 of diabetes. TNFα, NFKB, AMPK, AKT, and NRF2 are among the factors that are affected by quercetin. In addition, quercetin can be effective in preventing and ameliorating the diabetic complications, including diabetic nephropathy, cardiovascular complications, neuropathy, delayed wound healing, and retinopathy, and affects the key mechanisms involved in the pathogenesis of these complications. These positive effects of quercetin may be related to its anti-inflammatory and anti-oxidant properties. In this article, after a brief review of the pathogenesis of insulin resistance and type 2 diabetes, we will review the latest findings on the anti-diabetic effects of quercetin with a molecular perspective. Then we will review the effects of quercetin on the key mechanisms of pathogenesis of diabetes complications including nephropathy, cardiovascular complications, neuropathy, delayed wound healing, and retinopathy. Finally, clinical trials investigating the effect of quercetin on diabetes and diabetes complications will be reviewed.
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Affiliation(s)
- Lei Yan
- Clinical Experimental Centre, Xi'an International Medical Center Hospital, Xi'an, China
- Department of Pre-Clinical Sciences, Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Malaysia
| | - Mostafa Vaghari-Tabari
- Student's Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Faezeh Malakoti
- Student's Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soheila Moein
- Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Durdi Qujeq
- Cellular and Molecular Biology Research Center (CMBRC), Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
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Chan HN, Zhang XJ, Ling XT, Bui CHT, Wang YM, Ip P, Chu WK, Chen LJ, Tham CC, Yam JC, Pang CP. Vitamin D and Ocular Diseases: A Systematic Review. Int J Mol Sci 2022; 23:ijms23084226. [PMID: 35457041 PMCID: PMC9032397 DOI: 10.3390/ijms23084226] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 02/04/2023] Open
Abstract
The contributory roles of vitamin D in ocular and visual health have long been discussed, with numerous studies pointing to the adverse effects of vitamin D deficiency. In this paper, we provide a systematic review of recent findings on the association between vitamin D and different ocular diseases, including myopia, age-related macular degeneration (AMD), glaucoma, diabetic retinopathy (DR), dry eye syndrome (DES), thyroid eye disease (TED), uveitis, retinoblastoma (RB), cataract, and others, from epidemiological, clinical and basic studies, and briefly discuss vitamin D metabolism in the eye. We searched two research databases for articles examining the association between vitamin D deficiency and different ocular diseases. One hundred and sixty-two studies were found. There is evidence on the association between vitamin D and myopia, AMD, DR, and DES. Overall, 17 out of 27 studies reported an association between vitamin D and AMD, while 48 out of 54 studies reported that vitamin D was associated with DR, and 25 out of 27 studies reported an association between vitamin D and DES. However, the available evidence for the association with other ocular diseases, such as glaucoma, TED, and RB, remains limited.
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Affiliation(s)
- Hei-Nga Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
| | - Xiu-Juan Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
| | - Xiang-Tian Ling
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
| | - Christine Huyen-Trang Bui
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
| | - Yu-Meng Wang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
| | - Patrick Ip
- Department of Paediatrics and Adolescent Medicine, University of Hong Kong, Hong Kong, China;
| | - Wai-Kit Chu
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
| | - Li-Jia Chen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong, China
| | - Clement C. Tham
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong, China
- Department of Ophthalmology, Hong Kong Children’s Hospital, Hong Kong, China
- Hong Kong Eye Hospital, Hong Kong, China
| | - Jason C. Yam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
- Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong, China
- Department of Ophthalmology, Hong Kong Children’s Hospital, Hong Kong, China
- Hong Kong Eye Hospital, Hong Kong, China
- Correspondence: (J.C.Y.); (C.-P.P.)
| | - Chi-Pui Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China; (H.-N.C.); (X.-J.Z.); (X.-T.L.); (C.H.-T.B.); (Y.-M.W.); (W.-K.C.); (L.-J.C.); (C.C.T.)
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
- Correspondence: (J.C.Y.); (C.-P.P.)
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Cai Z, Yuan S, Luan X, Feng J, Deng L, Zuo Y, Li J. Pyroptosis-Related Inflammasome Pathway: A New Therapeutic Target for Diabetic Cardiomyopathy. Front Pharmacol 2022; 13:842313. [PMID: 35355717 PMCID: PMC8959892 DOI: 10.3389/fphar.2022.842313] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/07/2022] [Indexed: 12/14/2022] Open
Abstract
Pyroptosis is a highly specific type of inflammatory programmed cell death that is mediated by Gasdermine (GSDM). It is characterized by inflammasome activation, caspase activation, and cell membrane pore formation. Diabetic cardiomyopathy (DCM) is one of the leading diabetic complications and is a critical cause of fatalities in chronic diabetic patients, it is defined as a clinical condition of abnormal myocardial structure and performance in diabetic patients without other cardiac risk factors, such as hypertension, significant valvular disease, etc. There are no specific drugs in treating DCM despite decades of basic and clinical investigations. Although the relationship between DCM and pyroptosis is not well established yet, current studies provided the impetus for us to clarify the significance of pyroptosis in DCM. In this review, we summarize the recent literature addressing the role of pyroptosis and the inflammasome in the development of DCM and summary the potential use of approaches targeting this pathway which may be future anti-DCM strategies.
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Affiliation(s)
- Zhengyao Cai
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Department of Cardiology, Institute of Cardiovascular Research, The Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, China
| | - Suxin Yuan
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Department of Cardiology, Institute of Cardiovascular Research, The Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, China
| | - Xingzhao Luan
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Jian Feng
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Department of Cardiology, Institute of Cardiovascular Research, The Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, China
- *Correspondence: Jian Feng,
| | - Li Deng
- Department of Rheumatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yumei Zuo
- Department of outpatient, The 13th Retired Cadre Recuperation Clinic Of Chengdu, Institute of Cardiovascular Research, Chengdu, China
| | - Jiafu Li
- Key Laboratory of Medical Electrophysiology, Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Department of Cardiology, Institute of Cardiovascular Research, The Affiliated Hospital of Southwest Medical University, Southwest Medical University, Luzhou, China
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Maslinic Acid Protects against Streptozotocin-Induced Diabetic Retinopathy by Activating Nrf2 and Suppressing NF-κB. J Ophthalmol 2022; 2022:3044202. [PMID: 35265366 PMCID: PMC8901311 DOI: 10.1155/2022/3044202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/15/2022] [Accepted: 01/19/2022] [Indexed: 12/17/2022] Open
Abstract
This study tested the protective effect of maslinic acid (MA) against diabetic retinopathy (DR) in rats with type 1 diabetes mellitus (T1DM) and investigated possible mechanisms of action. DM was introduced by streptozotocin (STZ) (65 mg/kg, i.p.). Control and STZ (T1DM) were divided into 2 subgroups, which received either the vehicle or MA (80 mg/kg). Serum, pancreases, and retinas were collected for further use. MA significantly reduced fasting glucose levels in the control and T1DM rats but enhanced fasting insulin levels and partially increased the size of the islets of Langerhans and the number of β-cells in T1DM rats. In addition, MA significantly improved the retina structure by preventing the reduction in the area between the inner and outer limiting membranes (ILM and OLM, respectively) and increasing the number of cells forming the ganglion cell layer (GCL), inner nuclear layer (INL), and outer nuclear layer (ONL). Associated with these effects, MA significantly reduced the total levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), as well as the nuclear levels of NF-κB p65, mRNA levels of Bax, and protein levels of cleaved caspase-3 in the retinas of T1DM rats. However, MA significantly lowered levels of reactive oxygen species (ROS) and malondialdehyde (MDA) but significantly increased the nuclear levels of Nrf2, protein levels of Bcl2, and total levels of superoxide dismutase (SOD) and reduced glutathione (GSH) in the retinas of the control and T1DM rats. In conclusion, MA prevents DR by antioxidant potential mediated by the activation of Nrf2.
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Zhang XX, Ji YL, Zhu LP, Wang ZH, Fang CQ, Jiang CH, Pan K, Zhang J, Yin ZQ. Arjunolic acid from Cyclocarya paliurus ameliorates diabetic retinopathy through AMPK/mTOR/HO-1 regulated autophagy pathway. JOURNAL OF ETHNOPHARMACOLOGY 2022; 284:114772. [PMID: 34688801 DOI: 10.1016/j.jep.2021.114772] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/05/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cyclocarya paliurus (CP) is a traditional Chinese herb and possesses a variety of biological activities including anti-hyperglycemia, anti-hyperlipidemia, antioxidant and anti-inflammation. Arjunolic acid (AA) is an abundant and bioactive ingredient in CP that shows significant protection against many metabolic diseases such as diabetic complication. Diabetic retinopathy (DR) is a serious complication of diabetes and may lead to vision loss. However, the protective effects and underlying mechanisms of AA against DR is not still understood. AIM OF THE STUDY We aimed to investigate whether AA activates AMPK/mTOR/HO-1 regulated autophagy pathway to alleviate DR. MATERIALS AND METHODS In the study, the STZ-induced diabetic model of rats was established, and AA with 10 and 30 mg/kg dosages was given orally for ten weeks to investigate their effect on retinal injury of DR. H2O2-induced ARPE-19 cells were applied to evaluate anti-apoptosis and anti-oxidant effect of AA. RESULTS The results revealed that AA could prevent STZ-induced weight loss and increase the retinal thickness and nuclei counts. The level of HO-1 protein was upregulated both in vivo and in vitro. In addition, AA prevented retinal damage and cell apoptosis through the AMPK-mTOR-regulated autophagy pathway. Furthermore, anti-apoptosis capacity, as well as the expression of HO-1 and LC3 protein, were effectively locked by AMPK inhibitor dorsomorphin dihydrochloride (compound C). CONCLUSIONS This finding implies that AA may be a promising candidate drug by protecting retinal cells from STZ-induced oxidative stress and inflammation through the AMPK/mTOR/HO-1 regulated autophagy pathway.
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Affiliation(s)
- Xuan-Xuan Zhang
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China; Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, PR China; Department of Endocrinology, Nanjing Lishui District Hospital of Traditional Chinese Medicine, Nanjing, 211200, PR China
| | - Ya-Li Ji
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China; Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, PR China
| | - Li-Ping Zhu
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Zi-Han Wang
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China; Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, PR China
| | - Chang-Qian Fang
- Department of Endocrinology, Nanjing Lishui District Hospital of Traditional Chinese Medicine, Nanjing, 211200, PR China
| | - Cui-Hua Jiang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, PR China
| | - Ke Pan
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Jian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, PR China.
| | - Zhi-Qi Yin
- Department of TCMs Pharmaceuticals & Department of Natural Medicinal Chemistry, School of Traditional Chinese Medicine, China Pharmaceutical University, Nanjing, 211198, PR China.
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Ikeda T, Nakamura K, Kida T, Oku H. Possible roles of anti-type II collagen antibody and innate immunity in the development and progression of diabetic retinopathy. Graefes Arch Clin Exp Ophthalmol 2022; 260:387-403. [PMID: 34379187 PMCID: PMC8786754 DOI: 10.1007/s00417-021-05342-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 07/19/2021] [Accepted: 07/24/2021] [Indexed: 11/08/2022] Open
Abstract
The pathogenesis of both diabetic retinopathy (DR) and rheumatoid arthritis (RA) has recently been considered to involve autoimmunity. Serum and synovial fluid levels of anti-type II collagen antibodies increase early after the onset of RA, thus inducing immune responses and subsequent hydrarthrosis and angiogenesis, which resemble diabetic macular edema and proliferative DR (PDR), respectively. We previously reported that DR is also associated with increased serum levels of anti-type II collagen antibodies. Retinal hypoxia in DR may induce pericytes to express type II collagen, resulting in autoantibody production against type II collagen. As the result of blood-retinal barrier disruption, anti-type II collagen antibodies in the serum come into contact with type II collagen around the retinal vessels. A continued loss of pericytes and type II collagen around the retinal vessels may result in a shift of the immune reaction site from the retina to the vitreous. It has been reported that anti-inflammatory M2 macrophages increased in the vitreous of PDR patients, accompanied by the activation of the NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, a key regulator of innate immunity. M2 macrophages promote angiogenesis and fibrosis, which might be exacerbated and prolonged by dysregulated innate immunity.
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Affiliation(s)
- Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki City, Osaka, Japan.
- Department of Ophthalmology, Osaka Kaisei Hospital, 1-6-10 Miyahara Yodogawa-ku, Osaka City, Osaka, Japan.
| | | | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki City, Osaka, Japan
| | - Hidehiro Oku
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki City, Osaka, Japan
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He J, Rui Z, Gao J, Chen Y, Li Y, Xu T, Wang S. Expression of Long Non-Coding RNA (lncRNA) SNHG5 in Patients with Refractory Diabetic Macular Edema and Its Regulatory Mechanism. Med Sci Monit 2022; 28:e932996. [PMID: 35001073 PMCID: PMC8762959 DOI: 10.12659/msm.932996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The aim of this study was to assess use of lncRNAs as biomarkers in serum and aqueous humor of patients with diabetic macular edema (DME). MATERIAL AND METHODS Optical coherence tomography and fundus photography were used to analyze the retinal features of the patients. RT-qPCR was used to analyze the differential expression of lncRNA snhg5 in patients who have idiopathic macular hole (MH), DME, or refractory DME. The relationship between SNHG5 and the clinical characteristics of the patients was analyzed. The effect of SNHG5 on the hyperplasia and apoptosis of human retino-microvascular endothelial cells (HRMECs) and its mechanism were analyzed in vitro. RESULTS Patients with idiopathic MH developed retinal nerve epithelium rupture and retinal fundus thickening, and patients with DME or refractory DME showed significant macular edema with hemorrhaging. The refractory DME patients improved after treatment but still showed significant macular edema and multiple laser scarring. SNHG5 expression was not only low in the atrial fluid and plasma in DME patients, but also lower in the refractory DME group compared to the idiopathic MH patients. SNHG5 expression in the aqueous humor and plasma was negatively correlated with disease duration, body mass index, and levels of fasting blood glucose, glycated hemoglobin, proteinuria, and glycosuria. In the in vitro experiments, SNHG5 expression was significantly downregulated in high glucose-induced HMECs. After SNHG5 overexpression, cell proliferation, angiogenesis, and VEGF-A protein levels were distinctly downregulated. CONCLUSIONS SNHG5 correlates with the development of DME and is a potential target for therapy.
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Affiliation(s)
- Junwen He
- Department of Retinal and Vitreous Diseases, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Zhang Rui
- Department of Retinal and Vitreous Diseases, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Jing Gao
- Department of Ophthalmic Imaging, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Yanhong Chen
- Department of Ophthalmic Imaging, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Yanzi Li
- Department of Retinal and Vitreous Diseases, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Tao Xu
- Department of Retinal and Vitreous Diseases, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Shan Wang
- Department of Ophthalmic Imaging, Aier Eye Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
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Arabi A, Tadayoni R, Ahmadieh H, Shahraki T, Nikkhah H. Update on Management of Non-proliferative Diabetic Retinopathy without Diabetic Macular Edema; Is There a Paradigm Shift? J Ophthalmic Vis Res 2022; 17:108-117. [PMID: 35194501 PMCID: PMC8850856 DOI: 10.18502/jovr.v17i1.10175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/11/2021] [Indexed: 12/23/2022] Open
Abstract
Diabetic retinopathy (DR) is the major cause of visual impairment and blindness in the working-age population. Conventional management for nonproliferative diabetic retinopathy (NPDR) without diabetic macular edema (DME) is derived from the findings of the Early Treatment Diabetic Retinopathy Study (ETDRS). Although the ETDRS protocol basically includes observation, selected cases of severe NPDR may undergo scatter laser photocoagulation. Post-hoc analysis of recent trials has shown that patients with NPDR receiving intravitreal anti-vascular endothelial growth factor (anti-VEGF) for DME would experience improvement in the DR severity scale (DRSS). In addition, recent randomized trials (PANORAMA and Protocol W) have revealed that early intervention with intravitreal aflibercept in eyes with moderately severe to severe NPDR is associated with significant improvement in DRSS and reduced vision-threatening complications of DR. Based on recent studies, it seems that the therapeutic approach to NPDR may undergo a substantial change and a paradigm shift toward considering early intervention with the administration of intravitreal anti-VEGF injections. However, the long-term results and the duration of adherence to anti-VEGF therapy for eyes with NPDR are not yet defined. It is also not apparent whether improvement in DRSS is a true disease modification. Studies showed that DRSS improvement is not associated with retinal reperfusion. In addition, DRCR.net Protocol W showed no visual acuity benefit with the early intravitreal aflibercept injection in moderate to severe NPDR as compared with performing observation plus intravitreal aflibercept applied only after progression to proliferative DR or vision-impairing DME. The cost-benefit ratio is also a challenge. Herein, we look at different aspects of early anti-VEGF application and discuss its pros and cons in the process of treating NPDR.
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Affiliation(s)
- Amir Arabi
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Ophthalmology, Torfeh Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ramin Tadayoni
- Université de Paris, Ophthalmology Department, AP-HP, Lariboisière, Saint Louis and Fondation Adolphe de Rothschild Hospitals, Paris, France
| | - Hamid Ahmadieh
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Ophthalmology, Labbafinejad Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Toktam Shahraki
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Ophthalmology, Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Homayoun Nikkhah
- Ophthalmic Research Center, Research Institute for Ophthalmology and Vision Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Ophthalmology, Torfeh Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Liu L, Jiang Y, Steinle JJ. Epac1 and PKA agonists inhibit ROS to reduce NLRP3 inflammasome proteins in retinal endothelial cells. Mol Vis 2022; 28:500-506. [PMID: 37089701 PMCID: PMC10115359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/29/2022] [Indexed: 04/25/2023] Open
Abstract
Purpose Reactive oxygen species (ROS) activate inflammatory pathways in several organs, including the retina. More recent work has shown that ROS activate the NOD-like receptor protein 3 (NLRP3) inflammasome pathway proteins. We recently showed that the exchange protein activated by cAMP 1 (Epac1) and protein kinase A (PKA) regulates NLRP3 proteins in the retina. Our goal was to determine whether Epac1 and PKA reduce ROS and NLRP3 inflammasome proteins. Methods We used human primary retinal endothelial cells (RECs) grown in normal glucose (5 mM) and stimulated in normal glucose with hydrogen peroxide (H2O2) to induce ROS and measured NLRP3 pathway proteins. In some groups, we treated cells with an Epac1 or a PKA agonist in addition to H2O2 treatment to determine whether Epac1 and PKA reduced ROS and induced NLRP3 pathway proteins. Results The data showed that 500 µM H2O2 was the optimal dose to increase ROS in RECs. In RECs treated with H2O2, NLRP3 pathway proteins were increased, which were significantly reduced by cotreatment with PKA or Epac1 agonists. H2O2 significantly increased NIMA-related kinase 7 (Nek7) and purinergic 2X7 receptor 7 (P2X7) levels, which were blocked by Epac1 and PKA agonists. Conclusions Taken together, these data suggest that Epac1 and PKA reduce retinal inflammation through the reduced ROS-induced activation of NLRP3 pathway proteins.
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Affiliation(s)
- Li Liu
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI
| | - Youde Jiang
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI
| | - Jena J Steinle
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI
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