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Foad AM, Hafez A, Youssef W, Ahmed AE, Altaher AM. Irisin expression and FNDC5 (rs3480) gene polymorphism in type 2 diabetic patients with and without CAD. Arch Physiol Biochem 2024; 130:523-528. [PMID: 36732920 DOI: 10.1080/13813455.2023.2173785] [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: 12/05/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND Irisin was found to correlate with coronary artery disease (CAD) in diabetic patients. This study investigated the association of irisin and FNDC5 (SNP rs3480) with the presence and severity of CAD in T2DM. METHODS This cross-sectional study included 100 patients with T2DM divided into two groups, DM group (n = 50), including patients without CAD and CAD group (n = 50), including those confirmed to have CAD by coronary angiography. Irisin was measured. SNP rs3480 genotyping of FNDC5 was done. RESULTS Irisin levels were significantly lower in the CAD group (p < 0.001). The CAD group had significantly higher HbA1c and lower HDL (p < 0.001). Patients with controlled DM had significantly higher irisin levels (p < 0.001). single nucleotide polymorphism (SNP) rs3480 was not associated with irisin levels, and the FNDC5 rs3480 AA reference allele was significantly associated with significant CAD. CONCLUSION Irisin appears to be protective against developing CAD in diabetic patients. Irisin level was an independent predictor of significant CAD in diabetic patients combined with the FNDC5 rs3480 genotype. CLINICAL TRIAL REGISTRATION NUMBER NCT04957823.
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Affiliation(s)
- Amera Morad Foad
- Department of Medical Biochemistry, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Alshimaa Hafez
- Department of Medical Biochemistry, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Wael Youssef
- Department of Clinical Pathology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Ahmed Elsharawy Ahmed
- Department of Internal Medicine, Division of Cardiology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Ali Mohamad Altaher
- Department of Internal Medicine, Division of Cardiology, Faculty of Medicine, Sohag University, Sohag, Egypt
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Neira G, Hernández-Pardos AW, Becerril S, Ramírez B, Valentí V, Moncada R, Catalán V, Gómez-Ambrosi J, Burrell MA, Silva C, Escalada J, Frühbeck G, Rodríguez A. Differential mitochondrial adaptation and FNDC5 production in brown and white adipose tissue in response to cold and obesity. Obesity (Silver Spring) 2024. [PMID: 39327772 DOI: 10.1002/oby.24132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/05/2024] [Accepted: 07/10/2024] [Indexed: 09/28/2024]
Abstract
OBJECTIVE Fibronectin type III domain-containing protein 5 (FNDC5) modulates adipocyte metabolism by increasing white and brown adipose tissue (WAT and BAT) browning and activity, respectively. We investigated whether FNDC5 can regulate visceral WAT and BAT adaptive thermogenesis by improving mitochondrial homeostasis in response to cold and obesity. METHODS Adipose tissue expression of FNDC5 and factors involved in mitochondrial homeostasis were determined in patients with normal weight and obesity (n = 159) and in rats with diet-induced obesity after 1 week of cold exposure (n = 61). The effect of different FNDC5 concentrations on mitochondrial biogenesis, dynamics, and mitophagy was evaluated in vitro in human adipocytes. RESULTS In human visceral adipocytes, FNDC5/irisin triggered mitochondrial biogenesis (TFAM) and fusion (MFN1, MFN2, and OPA1) while inhibiting peripheral fission (DNM1L and FIS1) and mitophagy (PINK1 and PRKN). Circulating and visceral WAT expression of FNDC5 was decreased in patients and experimental animals with obesity, whereas its receptor, integrin αV, was upregulated. Obesity increased mitochondrial fusion while decreasing mitophagy in visceral WAT from patients and rats. By contrast, in rat BAT, an upregulation of Fndc5 and genes involved in mitochondrial biogenesis and fission was observed. Cold exposure promoted mitochondrial biogenesis and healthy peripheral fission while repressing Fndc5 expression and mitophagy in BAT from rats. CONCLUSIONS Depot differences in FNDC5 production and mitochondrial adaptations in response to obesity and cold might indicate a self-regulatory mechanism to control thermogenesis in response to energy needs.
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Affiliation(s)
- Gabriela Neira
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Sara Becerril
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Beatriz Ramírez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Víctor Valentí
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Rafael Moncada
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Anesthesia, Clínica Universidad de Navarra, Pamplona, Spain
| | - Victoria Catalán
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Javier Gómez-Ambrosi
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - María A Burrell
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Pathology, Anatomy and Physiology, University of Navarra, Pamplona, Spain
| | - Camilo Silva
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Javier Escalada
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Amaia Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
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Lee SH, Nam B, Youn J, Lee KH, Jo S. Swimming exercise alleviates pathological bone features in curdlan-injected SKG mice by inducing irisin expression. Life Sci 2024; 352:122894. [PMID: 38971365 DOI: 10.1016/j.lfs.2024.122894] [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: 04/15/2024] [Revised: 06/20/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
This study assessed the therapeutic potential of swimming exercise in the curdlan-injected SKG mouse model and investigated the modulatory effects of irisin on inflammation. Curdlan-injected SKG were randomly assigned to either a home-cage group or a swimming group for 6 weeks. Changes in clinical arthritis scores and ankle thickness were measured weekly. Post-swimming program, mice were anesthetized for collection of vastus lateralis muscle and blood, which was followed by histological analysis, micro-CT imaging of the ankle joints, and the measurement of pro-inflammatory cytokines and irisin levels. Additionally, curdlan-injected SKG mice were intravenously injected with recombinant irisin protein and observed. Finally, serum levels of irisin in healthy control and ankylosing spondylitis (AS) patient groups were measured by ELISA. The swimming group of curdlan-injected SKG mice exhibited significant improvements in arthritis and enthesitis compared to the home-cage group. In particular, micro-CT and histological analyses revealed a notable reduction in pathological bone features in the swimming group compared to the home-cage group. Muscle endurance was also enhanced in the swimming group compared to the home-cage group, as determined by the wire-hanging test. Intriguingly, irisin levels not only were statistically increased in the swimming group but, also, TNF-α, IL-1β, and IL-6 levels were decreased. Additionally, injection of irisin protein slightly attenuated both arthritis and enthesitis in curdlan-injected SKG mice. Meanwhile, irisin serum levels were declined in AS patients. Overall, we found that swimming exercise attenuated pathological bone features in an AS animal model, potentially mediated by increased irisin serum levels with associated anti-inflammatory effects.
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Affiliation(s)
- Seung Hoon Lee
- Hanyang University Institute for Rheumatology Research (HYIRR), Hanyang University, Seoul 04763, Republic of Korea
| | - Bora Nam
- Hanyang University Institute for Rheumatology Research (HYIRR), Hanyang University, Seoul 04763, Republic of Korea; Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 04763, Republic of Korea
| | - Jeehee Youn
- Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 04763, Republic of Korea
| | - Kyu Hoon Lee
- Department of Rehabilitation Medicine, Hanyang University Hospital for Rheumatic Diseases, Seoul 04763, Republic of Korea
| | - Sungsin Jo
- Hanyang University Institute for Rheumatology Research (HYIRR), Hanyang University, Seoul 04763, Republic of Korea; Department of Biology, College of Natural Sciences, Soonchunhyang University, Asan, Chungcheongnam-do 31538, Republic of Korea.
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Liu Y, Liu Y, Zhang X, Yan G, Qi L, Yong VW, Xue M. The cerebroprotection and prospects of FNDC5/irisin in stroke. Neuropharmacology 2024; 253:109986. [PMID: 38705569 DOI: 10.1016/j.neuropharm.2024.109986] [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: 02/21/2024] [Revised: 04/28/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
Stroke, the leading cause of disability and cognitive impairment, is also the second leading cause of death worldwide. The drugs with multi-targeted brain cytoprotective effects are increasingly being advocated for the treatment of stroke. Irisin, a newly discovered myokine produced by cleavage of fibronectin type III domain 5, has been shown to regulate glucose metabolism, mitochondrial energy, and fat browning. A large amount of evidence indicated that irisin could exert anti-inflammatory, anti-apoptotic, and antioxidant properties in a variety of diseases such as myocardial infarction, inflammatory bowel disease, lung injury, and kidney or liver disease. Studies have found that irisin is widely distributed in multiple brain regions and also plays an important regulatory role in the central nervous system. The most common cause of a stroke is a sudden blockage of an artery (ischemic stroke), and in some circumstances, a blood vessel rupture can also result in a stroke (hemorrhagic stroke). After a stroke, complicated pathophysiological processes lead to serious brain injury and neurological dysfunction. According to recent investigations, irisin may protect elements of the neurovascular unit by acting on multiple pathological processes in stroke. This review aims to outline the currently recognized effects of irisin on stroke and propose possible directions for future research.
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Affiliation(s)
- Yuanyuan Liu
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Yang Liu
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiangyu Zhang
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Gaili Yan
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Lingxiao Qi
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - V Wee Yong
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Mengzhou Xue
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China; Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China.
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Wang C, Wang X, Sun S, Chang Y, Lian P, Guo H, Zheng S, Ma R, Li G. Irisin inhibits microglial senescence via TFAM-mediated mitochondrial metabolism in a mouse model of tauopathy. Immun Ageing 2024; 21:30. [PMID: 38745313 PMCID: PMC11092051 DOI: 10.1186/s12979-024-00437-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/08/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND The accumulation of senescent microglia has been highlighted as a critical contributor to the progression of tauopathies. Irisin, a muscle-derived hormone produced by the proteolytic cleavage of Fibronectin-domain III containing 5 (FNDC5), mediates the pleiotropic effects of exercise on the physical body. Herein, we investigate the potential role of irisin in microglial senescence in tauopathies. METHODS To model tauopathies both in vivo and in vitro, we utilized P301S tau transgenic mice and tau K18 fibril-treated microglia BV2 cells, respectively. We first examined the expression of the irisin expression and senescence phenotypes of microglia in tauopathies. Subsequently, we investigated the impact of irisin on microglial senescence and its underlying molecular mechanisms. RESULT We observed a reduction in irisin levels and an onset of premature microglial senescence both in vivo and in vitro. Irisin administration was found to counteract microglial senescence and ameliorate cognitive decline in P301S mice. Mechanistically, irisin effectively inhibited microglial senescence by stimulating the expression of mitochondrial transcription factor A (TFAM), a master regulator of mitochondrial respiratory chain biogenesis, thereby enhancing mitochondrial oxidative phosphorylation (OXPHOS). Silencing TFAM eliminated the inhibitory effect of irisin on microglial senescence as well as the restorative effect of irisin on mitochondrial OXPHOS. Furthermore, the SIRT1/PGC1α signaling pathway appeared to be implicated in irisin-mediated upregulation of TFAM. CONCLUSION Taken together, our study revealed that irisin mitigated microglial senescence via TFAM-driven mitochondrial biogenesis, suggesting a promising new avenue for therapeutic strategies targeting tauopathies.
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Affiliation(s)
- Cailin Wang
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiufeng Wang
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shangqi Sun
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yanmin Chang
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Piaopiao Lian
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hongxiu Guo
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Siyi Zheng
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Rong Ma
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Gang Li
- Department of Neurology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Shi X, Gu Q, Fu C, Ma J, Li D, Zheng J, Chen S, She Z, Qi X, Li X, Wu S, Wang L. Relationship of irisin with disease severity and dopamine uptake in Parkinson's disease patients. Neuroimage Clin 2023; 41:103555. [PMID: 38134742 PMCID: PMC10777105 DOI: 10.1016/j.nicl.2023.103555] [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: 07/25/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND This study was designed to investigate the relationship of irisin with the severity of Parkinson's disease (PD) and dopamine (DOPA) uptake in patients with PD and to understand the role of irisin in PD. METHODS The plasma levels of irisin and α-syn were measured by enzyme-linked immunosorbent assay (ELISA). Motor and nonmotor symptoms were assessed with the relevant scales. DOPA uptake was measured with DOPA positron emission tomography (PET)/magnetic resonance imaging (MRI). RESULTS The plasma levels of α-syn and irisin in patients with PD gradually increased and decreased, respectively, with the progression of the disease. There was a negative correlation between plasma α-syn and irisin levels in patients with PD. The level of irisin in plasma was negatively correlated with Unified Parkinson's Disease Rating Scale (UPDRS)-III scores and positively correlated with Montreal Cognitive Assessment (MoCA) scores. The striatal/occipital lobe uptake ratios (SORs) of the ipsilateral and contralateral caudate nucleus and anterior and posterior putamen in the high-irisin group were significantly higher than those in the low-irisin group, and irisin levels in the caudate nucleus and anterior and posterior putamen contralateral to the affected limb were lower than those on the ipsilateral side. The level of irisin was positively correlated with the SORs of the ipsilateral and contralateral caudate nucleus and putamen in PD patients. CONCLUSIONS Irisin plays a neuroprotective role by decreasing the level of α-syn. Irisin is negatively correlated with the severity of motor symptoms and cognitive impairment. More importantly, irisin can improve DOPA uptake in the striatum of patients with PD, especially on the side contralateral to the affected limb.
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Affiliation(s)
- Xiaoxue Shi
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Qi Gu
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Chang Fu
- Department of Nuclear Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Jianjun Ma
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China.
| | - Dongsheng Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Jinhua Zheng
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Siyuan Chen
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Zonghan She
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Xuelin Qi
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China
| | - Xue Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Shaopu Wu
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
| | - Li Wang
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China; Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, China; Department of Neurology, Henan University People's Hospital, Zhengzhou, China
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Bagon BB, Lee J, Matienzo ME, Lim S, Park JI, Kang S, Kim K, Lee CM, Moon C, Kim DI, Park MJ. AAV-mediated skeletal muscle specific irisin expression does not contribute to weight loss in mice. Biochem Biophys Res Commun 2023; 682:111-117. [PMID: 37806248 DOI: 10.1016/j.bbrc.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 09/27/2023] [Accepted: 10/01/2023] [Indexed: 10/10/2023]
Abstract
Obesity, a chronic disease, significantly increases the risk of various diseases, including diabetes, cardiovascular diseases, and cancers. Exercise is crucial for weight management not only through energy expenditure by muscle activity but also through stimulating the secretion of myokines, which affect various tissues. Irisin, derived from the proteolytic processing of fibronectin type III domain-containing protein 5 (Fndc5), is a well-studied myokine with beneficial effects on metabolism. This study explored the feasibility of adeno-associated virus (AAV)-mediated Fndc5 gene therapy to treat obesity in a mouse model using the AAV-DIO system to express Fndc5 specifically in skeletal muscle, and investigated its anti-obesity effect. Although Fndc5 was specifically expressed in the muscle, no significant impact on body weight under normal chow or high-fat diets was observed, and no change in thermogenic gene expression in inguinal white adipose tissue was detected. Notably, Fndc5 transduction did affect bone metabolism, consistent with previous reports. These findings suggest that AAV-mediated Fndc5 gene therapy may not be an efficient strategy for obesity, contrary to our expectations. Further research is needed to elucidate the complex mechanisms involved in irisin's role in obesity and related disorders.
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Affiliation(s)
- Bernadette B Bagon
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Junhyeong Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea
| | - Merc Emil Matienzo
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea
| | - Sangyi Lim
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea
| | - Jae-Il Park
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju, 61751, South Korea
| | - Sohi Kang
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Keon Kim
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Chang-Min Lee
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Changjong Moon
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Dong-Il Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea.
| | - Min-Jung Park
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea.
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Mathia VL, Mendonça MIS, Simões DP, Perez MM, Alves BDCA, Encinas JFA, Raimundo JRS, Arcia CGC, Murad N, Fonseca FLA, da Veiga GL. Relationship of irisin expression with metabolic alterations and cardiovascular risk in type 2 diabetes mellitus: a preliminary study. REVISTA DA ASSOCIACAO MEDICA BRASILEIRA (1992) 2023; 69:e20230812. [PMID: 37909533 PMCID: PMC10615221 DOI: 10.1590/1806-9282.20230812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the role of irisin in type 2 diabetes mellitus and its association with metabolic alterations and obesity. METHODS A cross-sectional case-control study was conducted on participants treated at Centro Universitário FMABC between August 2018 and July 2019, by comparing a control group (n=14) with type 2 diabetes mellitus patients (n=16). The control group consisted of participants aged above 21 years with no chronic diseases, diabetes, smoking, or illicit drug use. The type 2 diabetes mellitus group included patients aged above 21 years, who were diagnosed with type 2 diabetes for at least 5 years (glycated hemoglobin>7%). Exclusion criteria were not willing to continue, recent hospitalization, and failure to meet inclusion criteria. Biochemical parameters included blood glucose, glycated hemoglobin, plasma irisin levels, and irisin gene expression in peripheral blood. RESULTS Type 2 diabetes mellitus patients exhibited significantly higher plasma glucose levels [143 (40) vs. 92 (13) mg/dL, *p<0.05] and glycated hemoglobin levels [7.1% (1.6) vs. 5.6% (0.5), *p<0.05] compared to the control group. Irisin gene expression in type 2 diabetes mellitus patients was lower 0.02288 (0.08050) than the control group 8.506e-006 (1.412e-005) (p=0.06). Correlation analysis revealed a positive association between irisin expression and body mass index in type 2 diabetes mellitus (Rho=0.5221, 95%CI -0.058 to 0.838, p=0.06), while plasma irisin showed a negative correlation with body mass index (Rho=-0.656, 95%CI -0.836 to 0.215, p=0.03). No significant correlations were found between plasma glucose or glycated hemoglobin levels and irisin expression. CONCLUSION The data suggests that body mass index directly influences plasma irisin levels and the regulation of irisin gene expression, possibly linking irisin to adiposity changes observed in obesity-related type 2 diabetes mellitus.
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Affiliation(s)
- Vanessa Lopes Mathia
- Centro Universitário FMABC, Clinical Analysis Laboratory – Santo André (SP), Brazil
| | | | - Diogo Pimenta Simões
- Centro Universitário FMABC, Clinical Analysis Laboratory – Santo André (SP), Brazil
| | | | | | | | | | | | - Neif Murad
- Centro Universitário FMABC, Clinical Analysis Laboratory – Santo André (SP), Brazil
| | - Fernando Luiz Affonso Fonseca
- Centro Universitário FMABC, Clinical Analysis Laboratory – Santo André (SP), Brazil
- Universidade Federal de São Paulo, Department of Pharmaceutical Sciences – Diadema (SP), Brazil
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9
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Cobb T, Hwang I, Soukar M, Namkoong S, Cho US, Safdar M, Kim M, Wessells RJ, Lee JH. Iditarod, a Drosophila homolog of the Irisin precursor FNDC5, is critical for exercise performance and cardiac autophagy. Proc Natl Acad Sci U S A 2023; 120:e2220556120. [PMID: 37722048 PMCID: PMC10523451 DOI: 10.1073/pnas.2220556120] [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: 12/02/2022] [Accepted: 07/28/2023] [Indexed: 09/20/2023] Open
Abstract
Mammalian FNDC5 encodes a protein precursor of Irisin, which is important for exercise-dependent regulation of whole-body metabolism. In a genetic screen in Drosophila, we identified Iditarod (Idit), which shows substantial protein homology to mouse and human FNDC5, as a regulator of autophagy acting downstream of Atg1/Atg13. Physiologically, Idit-deficient flies showed reduced exercise performance and defective cold resistance, which were rescued by exogenous expression of Idit. Exercise training increased endurance in wild-type flies, but not in Idit-deficient flies. Conversely, Idit is induced upon exercise training, and transgenic expression of Idit in wild-type flies increased endurance to the level of exercise trained flies. Finally, Idit deficiency prevented both exercise-induced increase in cardiac Atg8 and exercise-induced cardiac stress resistance, suggesting that cardiac autophagy may be an additional mechanism by which Idit is involved in the adaptive response to exercise. Our work suggests an ancient role of an Iditarod/Irisin/FNDC5 family of proteins in autophagy, exercise physiology, and cold adaptation, conserved throughout metazoan species.
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Affiliation(s)
- Tyler Cobb
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201
| | - Irene Hwang
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
| | - Michael Soukar
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
| | - Sim Namkoong
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Uhn-Soo Cho
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109
| | - Maryam Safdar
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201
| | - Myungjin Kim
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
| | - Robert J Wessells
- Department of Physiology, Wayne State University School of Medicine, Detroit, MI 48201
| | - Jun Hee Lee
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI 48109
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10
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Nayebifar S, Nakhaei H, Kakhki ZB, Ghasemi E. Intermittent vs. continuous swimming training on adipokines and pro-inflammatory cytokines in metabolic syndrome experimental model. Horm Mol Biol Clin Investig 2023; 44:321-328. [PMID: 37587008 DOI: 10.1515/hmbci-2022-0004] [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: 01/06/2022] [Accepted: 01/23/2023] [Indexed: 08/18/2023]
Abstract
OBJECTIVES In this study, metabolic syndrome-affected rats were studied to examine how intermittent and continuous swimming training influenced adipokines and pro-inflammatory cytokines. METHODS Forty-eight male Wistar rats were randomized in this experimental study into four groups (n=8), including normal control (NC), metabolic syndrome (MS), continuous swimming training with metabolic syndrome (CT-MS: load 0-3% body mass, 5 d/wk, for 8 weeks), and intermittent swimming training with metabolic syndrome (IT-MS: load 5-16% body mass, 5 d/wk, for 8 weeks). The serum levels of metrnl, adipolin, irisin, leptin, TNF-α, and IL-6 were measured using the ELISA test. RESULTS The IT-MS and NC groups exhibited significantly lower leptin concentrations than the CT-MS group (p=0.001). The irisin, meteorin, and adipolin serum levels increased significantly in CT-MS and IT relative to the NC and CT-MS groups (p=0.001), with the changes being more pronounced in the IT group (p=0.05). TNF-α and IL-6 were inclined in the CT-MS group compared with the other three groups (p=0.001), while IL-6 was increased in the IT group (p=0.024). CONCLUSIONS Intermittent swimming is more effective than continuous swimming training in improving adipokines in rats with metabolic syndrome.
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Affiliation(s)
- Shila Nayebifar
- Department of Sport Sciences, Faculty of Educational Sciences and Psychology, University of Sistan and Baluchestan, Zahedan, Iran
| | - Hossein Nakhaei
- Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | - Elham Ghasemi
- Department of Sport Sciences, Faculty of Literature and Humanities, University of Zabol, Zabol, Iran
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11
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KIM SUJIN, PARK DONGHO, LEE SANGHYUN, KWAK HYOBUM, KANG JUHEE. Contribution of High-Intensity Interval Exercise in the Fasted State to Fat Browning: Potential Roles of Lactate and β-Hydroxybutyrate. Med Sci Sports Exerc 2023; 55:1160-1171. [PMID: 36790381 PMCID: PMC10242519 DOI: 10.1249/mss.0000000000003136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
PURPOSE Fat browning contributes to energy consumption and may have metabolic benefits against obesity; however, the potential roles of lactate and β-hydroxybutyrate (β-HB) in fat browning remain unclear. We investigated the roles of a single bout of aerobic exercise that increases lactate and β-HB levels in the fasted state on the regulation of fat browning in rats and humans. METHODS Male Sprague-Dawley rats were exposed to 24-h fasting and/or a single bout moderate-intensity aerobic exercise (40 min): sedentary (CON), exercise (ND-EX), fasting (FAST), and exercise + fasting (F-EX). Adult men ( n = 13) were randomly assigned into control with food intake (CON), exercise with intensity at onset of blood lactate accumulation in the fasted state (F-OBLA), and high-intensity interval exercise in the fasted state (F-HIIE) until each participant expended 350 kcal of energy. For evaluating the effects of exercise intensity in rats, we conducted another set of animal experiment, including groups of sedentary fed control, fasting control, and exercise with moderate-intensity or HIIE for 40 min after a 24-h fasting. RESULTS Regardless of fasting, single bout of exercise increases the concentration of lactate and β-HB in rats, but the exercise in the fasted state increases the β-HB level more significantly in rats and humans. F-EX-activated fat browning (AMPK-SirT1-PGC1α pathway and PRDM16) and thermogenic factor (UCP1) in white fat of rats. In rats and humans, exercise in the fasted state increased the blood levels of fat browning-related adipomyokines. In particular, compared with F-OBLA, F-HIIE more efficiently increases free fatty acid as well as blood levels of fat browning adipomyokines in humans, which was correlated with blood levels of lactate and β-HB. In rats that performed exercise with different intensity, the higher plasma lactate and β-HB levels, and higher expression of p-AMPK, UCP1, and PRDM16 in white adipose tissue of HIIE group than those of moderate-intensity group, were observed. CONCLUSIONS A single bout of aerobic exercise in the fasted state significantly induced fat browning-related pathways, free fatty acid, and adipomyokines, particularly F-HIIE in human. Although further evidence for supporting our results is required in humans, aerobic exercise in the fasted state with high intensity that increase lactate and β-HB may be a modality of fat browning.
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Affiliation(s)
- SUJIN KIM
- Department of Pharmacology and Research Center for Controlling Intercellular Communication, College of Medicine, Inha University, Incheon, REPUBLIC OF KOREA
| | - DONG-HO PARK
- Department of Kinesiology, Inha University, Incheon, REPUBLIC OF KOREA
- Program in Biomedical Science and Engineering, Inha University, Incheon, REPUBLIC OF KOREA
| | - SANG-HYUN LEE
- Department of Kinesiology, Inha University, Incheon, REPUBLIC OF KOREA
| | - HYO-BUM KWAK
- Department of Kinesiology, Inha University, Incheon, REPUBLIC OF KOREA
- Program in Biomedical Science and Engineering, Inha University, Incheon, REPUBLIC OF KOREA
| | - JU-HEE KANG
- Department of Pharmacology and Research Center for Controlling Intercellular Communication, College of Medicine, Inha University, Incheon, REPUBLIC OF KOREA
- Program in Biomedical Science and Engineering, Inha University, Incheon, REPUBLIC OF KOREA
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12
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Martínez-Fernández L, Burgos M, Sáinz N, Laiglesia LM, Arbones-Mainar JM, González-Muniesa P, Moreno-Aliaga MJ. Maresin 1 Exerts a Tissue-Specific Regulation of Adipo-Hepato-Myokines in Diet-Induced Obese Mice and Modulates Adipokine Expression in Cultured Human Adipocytes in Basal and Inflammatory Conditions. Biomolecules 2023; 13:919. [PMID: 37371501 DOI: 10.3390/biom13060919] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
This study analyses the effects of Maresin 1 (MaR1), a docosahexaenoic acid (DHA)-derived specialized proresolving lipid mediator with anti-inflammatory and insulin-sensitizing actions, on the expression of adipokines, including adiponectin, leptin, dipeptidyl peptidase 4 (DPP-4), cardiotrophin-1 (CT-1), and irisin (FNDC5), both in vitro and in in vivo models of obesity. The in vivo effects of MaR1 (50 μg/kg, 10 days, oral gavage) were evaluated in epididymal adipose tissue (eWAT), liver and muscle of diet-induced obese (DIO) mice. Moreover, two models of human differentiated primary adipocytes were incubated with MaR1 (1 and 10 nM, 24 h) or with a combination of tumor necrosis factor-α (TNF-α, 100 ng/mL) and MaR1 (1-200 nM, 24 h) and the expression and secretion of adipokines were measured in both models. MaR1-treated DIO mice exhibited an increased expression of adiponectin and Ct-1 in eWAT, increased expression of Fndc5 and Ct-1 in muscle and a decreased expression of hepatic Dpp-4. In human differentiated adipocytes, MaR1 increased the expression of ADIPONECTIN, LEPTIN, DPP4, CT-1 and FNDC5. Moreover, MaR1 counteracted the downregulation of ADIPONECTIN and the upregulation of DPP-4 and LEPTIN observed in adipocytes treated with TNF-α. Differential effects for TNF-α and MaR1 on the expression of CT-1 and FNDC5 were observed between both models of human adipocytes. In conclusion, MaR1 reverses the expression of specific adipomyokines and hepatokines altered in obese mice in a tissue-dependent manner. Moreover, MaR1 regulates the basal expression of adipokines in human adipocytes and counteracts the alterations of adipokines expression induced by TNF-α in vitro. These actions could contribute to the metabolic benefits of this lipid mediator.
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Affiliation(s)
- Leyre Martínez-Fernández
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | - Miguel Burgos
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
- IDISNA-Navarra Institute for Health Research, 31008 Pamplona, Spain
| | - Neira Sáinz
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | - Laura M Laiglesia
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
| | - José Miguel Arbones-Mainar
- Adipocyte and Fat Biology Laboratory (AdipoFat), Unidad de Investigación Traslacional, Instituto Aragonés de Ciencias de la Salud (IACS), Instituto de Investigación Sanitaria (IIS) Aragón, Hospital Universitario Miguel Servet, 50009 Zaragoza, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Pedro González-Muniesa
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
- IDISNA-Navarra Institute for Health Research, 31008 Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - María J Moreno-Aliaga
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, School of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
- IDISNA-Navarra Institute for Health Research, 31008 Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
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13
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Tang C, Liu M, Zhou Z, Li H, Yang C, Yang L, Xiang J. Treadmill Exercise Alleviates Cognition Disorder by Activating the FNDC5: Dual Role of Integrin αV/β5 in Parkinson's Disease. Int J Mol Sci 2023; 24:ijms24097830. [PMID: 37175535 PMCID: PMC10178565 DOI: 10.3390/ijms24097830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/13/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
Parkinson's disease with cognitive impairment (PD-CI) results in several clinical outcomes for which specific treatment is lacking. Although the pathogenesis of PD-CI has not yet been fully elucidated, it is related to neuronal plasticity decline in the hippocampus region. The dopaminergic projections from the substantia nigra to the hippocampus are critical in regulating hippocampal plasticity. Recently, aerobic exercise has been recognized as an effective therapeutic strategy for enhancing plasticity through the secretion of various muscle factors. The exact role of FNDC5-an upregulated, newly identified myokine produced after exercise-in mediating hippocampal plasticity and regional dopaminergic projections in PD-CI remains unclear. In this study, the effect of treadmill exercise on hippocampal synaptic plasticity was evaluated in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced chronic PD models. The results showed that treadmill exercise substantially alleviated the motor dysfunction, cognition disorder, and dopaminergic neuron degeneration induced by MPTP. Here, we discovered that the quadriceps, serum, and brain FNDC5 levels were lower in PD mice and that intervention with treadmill exercise restored FNDC5 levels. Moreover, treadmill exercise enhanced the synaptic plasticity of hippocampal pyramidal neurons via increased dopamine levels and BDNF in the PD mice. The direct protective effect of FNDC5 is achieved by promoting the secretion of BDNF in the hippocampal neurons via binding the integrin αVβ5 receptor, thereby improving synaptic plasticity. Regarding the indirect protection effect, FNDC5 promotes the dopaminergic connection from the substantia nigra to the hippocampus by mediating the interaction between the integrin αVβ5 of the hippocampal neurons and the CD90 molecules on the membrane of dopaminergic terminals. Our findings demonstrated that treadmill exercise could effectively alleviate cognitive disorders via the activation of the FNDC5-BDNF pathway and enhance the dopaminergic synaptic connection from SNpc to the hippocampus in the MPTP-induced chronic PD model.
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Affiliation(s)
- Chuanxi Tang
- Xuzhou Key Laboratory of Neurobiology, Department of Neurobiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Mengting Liu
- Department of Rehabilitation, The Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou 221002, China
- The College of Medical Technology, Xuzhou Medical University, Xuzhou 221004, China
| | - Zihang Zhou
- Xuzhou Key Laboratory of Neurobiology, Department of Neurobiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Hao Li
- Xuzhou Key Laboratory of Neurobiology, Department of Neurobiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Chenglin Yang
- Xuzhou Key Laboratory of Neurobiology, Department of Neurobiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Li Yang
- Xuzhou Key Laboratory of Neurobiology, Department of Neurobiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Jie Xiang
- Department of Rehabilitation, The Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou 221002, China
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14
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Liu JF, Su G, Chen LX, Zhou JP, Gao J, Zhang JJ, Wu QH, Chen W, Chen DY, Zhang ZC. Irisin Attenuates Apoptosis Following Ischemia-Reperfusion Injury Through Improved Mitochondria Dynamics and ROS Suppression Mediated Through the PI3K/Akt/mTOR Axis. Mol Neurobiol 2023:10.1007/s12035-023-03336-5. [PMID: 37060502 DOI: 10.1007/s12035-023-03336-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 04/03/2023] [Indexed: 04/16/2023]
Abstract
Irisin is a muscle-derived hormone that promotes the survival of motor neurons and enhances muscle size following injury. In this study, we investigated the beneficial effects and mechanism(s) of action of irisin in response to cerebral ischemia-reperfusion injury (CIRI). Right-middle cerebral artery occlusion (MCAO) and hypoxia/reoxygenation (H/R) models were generated in C57BL/6 J mice. Mouse neuronal cell lines (NSC-34) were used to confirm the molecular mechanisms of the protection afforded by irisin in response to CIRI. We found that irisin (250 μg/kg) improved cerebral function and reduced the cerebral infarct volume following CIRI. Irisin also protected neuronal cells against ischemia-reperfusion (I/R) induced apoptosis, assessed via TUNEL, and cleaved Caspase-3 staining. Western blotting of neuronal tissue from irisin treated I/R mice showed lower expression of pro-apoptotic Bax and caspase-9 (P < 0.001 and P < 0.01) and increased levels of the pro-survival protein Bcl-2 (P < 0.01 & P < 0.001 vs. I/R). Irisin also reduced the levels of reactive oxygen species (ROS) characterized through malondialdehyde (MDA) assays. Irisin was found to maintain mitochondrial homeostasis through the suppression of mitochondrial fission-linked dynamin-related protein 1 in CIRI mice (P < 0.01 and P < 0.05 v. I/R cohort). Moreover, mitochondrial fusion-related protein (Mfn2) and Opa1 expression were rescued following irisin treatment (P < 0.001 and P < 0.01 v. I/R cohort). Cell-based assays showed that irisin activates PI3K/AKT/mTOR signaling in the neurons of CIRI mice. Furthermore, the beneficial effects of irisin on NSC-34 cell-survival, mitochondrial function, and ROS generation were reversed by VS-5584, a highly specific PI3K/AKT/mTOR inhibitor. Collectively, these data highlight the ability of irisin to alleviate CIRI in vivo and in vitro. The mechanisms of action of irisin include the attenuation of apoptosis through the prevention of mitochondrial fission and increased mitochondrial fusion and the alleviation of oxidative stress through activation of the PI3K/AKT/mTOR axis. We therefore identify irisin as a much-needed therapeutic for CIRI.
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Affiliation(s)
- Ji-Fei Liu
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Gang Su
- Institute of Genetics, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Li-Xia Chen
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Juan-Ping Zhou
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Juan Gao
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Jia-Jia Zhang
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Qiong-Hui Wu
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Wei Chen
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - De-Yi Chen
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China
| | - Zhen-Chang Zhang
- Department of Neurology, Lanzhou University Second Hospital, No.82, Cuiyingmen, Lanzhou, 730030, Gansu, China.
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15
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Lai E, Unniappan S. Irisin in domestic animals. Domest Anim Endocrinol 2023; 83:106787. [PMID: 36863302 DOI: 10.1016/j.domaniend.2023.106787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
Irisin is a 112 amino acid peptide hormone cleaved from the fibronectin type III domain-containing protein. Irisin is highly conserved across vertebrates, suggesting evolutionarily conserved common functions among domestic animals. These functions include the browning of white adipose tissue and increased energy expenditure. Irisin has been detected and studied primarily in plasma, serum, and skeletal muscle, but has also been found in adipose tissue, liver, kidney, lungs, cerebrospinal fluid, breast milk, and saliva. This wider tissue presence of irisin suggests additional functions beyond its role as a myokine in regulating energy use. We are beginning to understand irisin in domestic animals. The goal of this review is to provide an up-to-date commentary on irisin structure, tissue distribution, and functions across vertebrates, especially mammals of importance in veterinary medicine. Irisin could be explored as a potential candidate for developing therapeutic agents and biomarkers in domestic animal endocrinology.
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Affiliation(s)
- E Lai
- Department of Veterinary Biomedical Sciences, Laboratory of Integrative Neuroendocrinology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B4, Canada
| | - S Unniappan
- Department of Veterinary Biomedical Sciences, Laboratory of Integrative Neuroendocrinology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B4, Canada.
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16
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Decourt C, Evans MC, Inglis MA, Anderson GM. Central Irisin Signaling Is Required for Normal Timing of Puberty in Female Mice. Endocrinology 2022; 164:6887324. [PMID: 36503981 PMCID: PMC9791080 DOI: 10.1210/endocr/bqac208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/01/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
Timing of puberty requires exquisite coordination of genes, hormones, and brain circuitry. An increasing level of body adiposity, signaled to the brain via the fat-derived hormone leptin, is recognized as a major factor controlling puberty onset. However, it is clear that leptin is not the only metabolic cue regulating puberty, and that developmental regulation of this process also involves tissues other than adipose, with muscle development potentially playing a role in the timing of puberty. The proteolytic processing of fibronectin type 3 domain-containing protein 5 (FNDC5) releases a hormone, irisin. Irisin is primarily produced by muscle and is released into circulation, where levels increase dramatically as puberty approaches. We investigated the effects of a global deletion of the Fndc5 gene on pubertal timing. The absence of irisin induced a delay in puberty onset in female knockout mice compared with controls, without affecting body weight or gonadotropin-releasing hormone (GnRH) neuronal density. We next treated pre-pubertal wild-type male and female mice with an irisin receptor antagonist, cilengitide, for 7 days and observed a delay in first estrus occurrence compared to vehicle-treated control mice. Male puberty timing was unaffected. Next, we deleted the irisin receptor (integrin subunit alpha V) in all forebrain neurons and found a delay in the occurrence of first estrus in knockout females compared to controls. Taken together, these data suggest irisin plays a role in the timing of puberty onset in female mice via a centrally mediated mechanism.
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Affiliation(s)
- Caroline Decourt
- Correspondence: Caroline Decourt, PhD, Centre for Neuroendocrinology and Department of Anatomy, University of Otago, School of Biomedical Sciences, P.O. Box 913, Dunedin 9016, New Zealand.
| | - Maggie C Evans
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago School of Biomedical Sciences, Dunedin 9016, New Zealand
| | - Megan A Inglis
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago School of Biomedical Sciences, Dunedin 9016, New Zealand
| | - Greg M Anderson
- Centre for Neuroendocrinology and Department of Anatomy, University of Otago School of Biomedical Sciences, Dunedin 9016, New Zealand
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17
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Effects of the Myokine Irisin on Stromal Cells from Swine Adipose Tissue. Biomolecules 2022; 12:biom12121895. [PMID: 36551323 PMCID: PMC9775982 DOI: 10.3390/biom12121895] [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: 11/18/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Irisin is a hormone able to reproduce some of the positive effects of physical activity and diet. Recently, we demonstrated the presence of Irisin at the ovarian level as a potential physiological regulator of follicular function. Adipose tissue is crucial for reproductive function through its metabolic activity and the production of adipokines. At present, the exact nature of adipocyte precursors is still under debate, but an important role has been assigned to the population of adipose tissue mesenchymal stromal cells (ASCs) of perivascular origin. It should be noted that, when appropriately stimulated, ASCs can differentiate into preadipocytes and, subsequently, adipocytes. Therefore, this present study was undertaken to explore the potential effect of Irisin on ASCs, known for their high differentiative potential. Since Irisin expression in ASCs was confirmed by PCR, we tested its potential effects on the main functional activities of these cells, including proliferation (BrdU uptake); metabolic activity (ATP production); redox status, evaluated as the generation of free molecules such as superoxide anion and nitric oxide; and scavenger activities, assessed as both enzymatic (superoxide dismutase) and non-enzymatic antioxidant power. Moreover, we tested the effect of Irisin on ASCs adipogenic differentiation. BrdU uptake was significantly (p < 0.001) inhibited by Irisin, while ATP production was significantly (p < 0.05) increased. Both superoxide anion and nitric oxide generation were significantly increased (p < 0.001) by Irisin, while scavenger activity was significantly reduced (p < 0.05). Irisin was found to significantly (p < 0.05) inhibit ASCs adipogenic differentiation. Taken together, the present results suggest a potential local role of Irisin in the regulation of adipose tissue function.
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Irisin, an Effective Treatment for Cardiovascular Diseases? J Cardiovasc Dev Dis 2022; 9:jcdd9090305. [PMID: 36135450 PMCID: PMC9503035 DOI: 10.3390/jcdd9090305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/02/2022] [Accepted: 09/07/2022] [Indexed: 11/21/2022] Open
Abstract
Irisin, as one of the myokines induced by exercise, has attracted much attention due to its important physiological functions such as white fat browning, the improvement in metabolism, and the alleviation of inflammation. Despite the positive role that irisin has been proven to play in the prevention and treatment of cardiovascular diseases, whether it can become a biomarker and potential target for predicting and treating cardiovascular diseases remains controversial, given the unreliability of its detection methods, the uncertainty of its receptors, and the species differences between animals and humans. This paper was intended to review the role of irisin in the diagnosis and treatment of cardiovascular diseases, the potential molecular mechanism, and the urgent problems to be solved in hopes of advancing our understanding of irisin as well as providing data for the development of new and promising intervention strategies by discussing the causes of contradictory results.
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The potential role of FNDC5/irisin in various liver diseases: awakening the sleeping beauties. Expert Rev Mol Med 2022; 24:e23. [PMID: 35695040 DOI: 10.1017/erm.2022.19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fibronectin type III domain-containing protein 5 (FNDC5) is a transmembrane protein and the precursor of irisin, which serves as a systemic exerkine/myokine with multiple origins. Since its discovery in 2012, this hormone-like polypeptide has rapidly evolved to a component significantly involved in a gamut of metabolic dysregulations and various liver diseases. After a decade of extensive investigation on FNDC5/irisin, we are still surrounded by lots of open questions regarding its diagnostic and therapeutic values. In this review, we first concentrated on the structure-function relationship of FNDC5/irisin. Next, we comprehensively summarised the current knowledge and research findings regarding pathogenic roles/therapeutic applications of FNDC5/irisin in the context of non-alcoholic fatty liver disease, fibrosis, liver injury due to multiple detrimental insults, hepatic malignancy and intrahepatic cholestasis of pregnancy. Moreover, the prominent molecules involved in the underlying mechanisms and signalling pathways were highlighted. As a result, emerging evidence reveals FNDC5/irisin may act as a proxy for diagnosing liver disease pathology, a sensitive biomarker for assessing damage severity, a predisposing factor for surveilling illness progression and a treatment option with protective/preventive impact, all of which are highly dependent on disease grading and contextually pathological features.
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Ozcan S, Ulker N, Bulmus O, Yardimci A, Ozcan M, Canpolat S. The modulatory effects of irisin on asprosin, leptin, glucose levels and lipid profile in healthy and obese male and female rats. Arch Physiol Biochem 2022; 128:724-731. [PMID: 32027180 DOI: 10.1080/13813455.2020.1722706] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVES The main aim of this study was to investigate the effects of irisin on asprosin, leptin, glucose levels and lipid profile in healthy and obese male and female rats. METHODS Irisin was subcutaneously administered with osmotic minipumps at the dose of 100 ng/kg/day for 28 days and then, the serum levels of asprosin, leptin, glucose and lipid profile were investigated. RESULTS Irisin infusion increased asprosin levels in male rats (p = .02) but not in female rats. Irisin inhibited obesity-induced high glucose, low-density lipoprotein (LDL), triglyceride (TG) and leptin levels in all groups; however, it did not lead to any change in asprosin levels in both obese female and male rats. CONCLUSIONS It was determined that irisin increased serum asprosin levels and decreased LDL, TG, glucose and leptin levels, and this could indicate a protective role of irisin against obesity development.
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Affiliation(s)
- Sibel Ozcan
- Department of Anesthesiology and Reanimation, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Nazife Ulker
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ozgur Bulmus
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ahmet Yardimci
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Mete Ozcan
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Sinan Canpolat
- Department of Physiology, Faculty of Medicine, Firat University, Elazig, Turkey
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Peng J, Wu J. Effects of the FNDC5/Irisin on Elderly Dementia and Cognitive Impairment. Front Aging Neurosci 2022; 14:863901. [PMID: 35431908 PMCID: PMC9009536 DOI: 10.3389/fnagi.2022.863901] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/01/2022] [Indexed: 11/20/2022] Open
Abstract
Population aging is an inevitable problem nowadays, and the elderly are going through a lot of geriatric symptoms, especially cognitive impairment. Irisin, an exercise-stimulating cleaved product from transmembrane fibronectin type III domain-containing protein 5 (FNDC5), has been linked with favorable effects on many metabolic diseases. Recently, mounting studies also highlighted the neuroprotective effects of irisin on dementia. The current evidence remains uncertain, and few clinical trials have been undertaken to limit its clinical practice. Therefore, we provided an overview of current scientific knowledge focusing on the preventive mechanisms of irisin on senile cognitive decline and dementia, in terms of the possible connections between irisin and neurogenesis, neuroinflammation, oxidative stress, and dementia-related diseases. This study summarized the recent advances and ongoing studies, aiming to provide a better scope into the effectiveness of irisin on dementia progression, as well as a mediator of muscle brain cross talk to provide theoretical support for exercise therapy for patients with dementia. Whether irisin is a diagnostic or prognostic factor for dementia needs more researches.
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Li J, Yi X, Li T, Yao T, Li D, Hu G, Ma Y, Chang B, Cao S. Effects of exercise and dietary intervention on muscle, adipose tissue, and blood IRISIN levels in obese male mice and their relationship with the beigeization of white adipose tissue. Endocr Connect 2022; 11:EC-21-0625.R1. [PMID: 35148278 PMCID: PMC8942313 DOI: 10.1530/ec-21-0625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 02/11/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND Obesity is a growing problem worldwide, and newer therapeutic strategies to combat it are urgently required. This study aimed to analyze the effect of diet and exercise interventions on energy balance in mice and elucidate the mechanism of the peroxisome proliferator-activated receptor-gamma co-activator-1-alpha-IRISIN-uncoupling protein-1 (PGC-1α-IRISIN-UCP-1) pathway in the beigeization of white adipose tissue. METHODS Four-week-old male C57BL/6 mice were randomly divided into normal (NC) and high-fat diet (HFD) groups. After 10 weeks of HFD feeding, obese mice were randomly divided into obesity control (OC), obesity diet control (OD), obesity exercise (OE), and obesity diet control exercise (ODE) groups. Mice in OE and ODE performed moderate-load treadmill exercises: for OD and ODE, the diet constituted 70% of the food intake of the OC group for 8 weeks. RESULTS Long-term HFD inhibits white adipose tissue beigeization by downregulating PGC-1α-IRISIN-UCP-1 in the adipose tissue and skeletal muscles. Eight weeks of exercise and dietary interventions alleviated obesity-induced skeletal muscle, and adipose tissue PGC-1α-IRISIN-UCP-1 pathway downregulation promoted white adipose tissue beigeization and reduced body adipose tissue. The effects of the combined intervention were better than those of single interventions. CONCLUSIONS Diet and exercise intervention after obesity and obesity itself may affect the beigeization of WAT by downregulating/upregulating the expression/secretion of skeletal muscle and adipose PGC-1α-IRISIN, thereby influencing the regulation of bodyweight. The effects of the combined intervention were better than those of single interventions.
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Affiliation(s)
- Jing Li
- School of Physical Education, Liaoning Normal University, Dalian, Liaoning, China
| | - Xuejie Yi
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
| | - Tao Li
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
| | - Tingting Yao
- School of Physical Education, Liaoning Normal University, Dalian, Liaoning, China
| | - Dongyang Li
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
| | - Guangxuan Hu
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
| | - Yongqi Ma
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
| | - Bo Chang
- Exercise and Health Research Center, Department of Kinesiology, Laboratory Management Center, Shenyang Sport University, Shenyang, Liaoning, China
- Correspondence should be addressed to B Chang or S Cao: or
| | - Shicheng Cao
- Department of Sports Medicine, School of Public and Basic Sciences, China Medical University, Shenyang, Liaoning, China
- Correspondence should be addressed to B Chang or S Cao: or
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Varikasuvu SR, Pérez-López FR, Thangappazham B, Raj H, Vykunta A. Effect of metformin intervention on circulating irisin levels in polycystic ovary syndrome: a systematic review and collaborative meta-analysis. Gynecol Endocrinol 2022; 38:207-212. [PMID: 34779689 DOI: 10.1080/09513590.2021.1998439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Irisin is an adipo-myokine with potential implications in metabolic disorders such as polycystic ovary syndrome (PCOS). Despite of a strong evidence showing increased irisin level in PCOS, there is no conclusive evidence on the effect of metformin intervention on circulatory irisin in PCOS. AIM The aim of this meta-analysis was to compare the circulatory (serum/plasma) irisin levels before and after metformin intervention in subjects with PCOS. METHODS Relevant studies were retrieved by online database and manual searching. The standardized mean differences (SMDs) with 95% confidence intervals (CIs) were obtained by a random-effects meta-analysis. A one-study leave-out sensitivity analysis was conducted to validate the overall obtained results. RESULTS A total of five observations were included in this meta-analysis. The results based on random effects meta-analysis indicated that irisin levels were significantly decreased after metformin intervention as compared to the baseline pretreatment levels in PCOS (SMD: -1.00, 95% CI: -1.60 to -0.41, Z: 3.29, p = .001). The sensitivity analysis leaving-out a particular observation at a time and repeating the meta-analysis validated the robustness of the overall finding suggesting the significant effect of metformin treatment on irisin levels in PCOS. CONCLUSION Circulating irisin levels were significantly decreased upon metformin intervention in PCOS patients. The higher pretreatment irisin levels in PCOS may recede once the altered metabolic state is restored upon metformin intervention. Well-designed randomized trials with large sample sizes are warranted to further substantiate the reported evidence reported and to establish the possible mechanisms.
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Affiliation(s)
- Seshadri Reddy Varikasuvu
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Deoghar, Jharkhand, India
| | - Faustino R Pérez-López
- Department of Obstetrics and Gynecology, University of Zaragoza Faculty of Medicine, Zaragoza, Spain
| | | | - Hemanth Raj
- Department of Medicine, Mount Medical Centre, Chennai, Tamil Nadu, India
| | - Alekya Vykunta
- Heath Centre, Sri Venkateswara University, Tirupathi, Andhra Pradesh, India
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Luo Y, Qiao X, Xu L, Huang G. Irisin: circulating levels in serum and its relation to gonadal axis. Endocrine 2022; 75:663-671. [PMID: 35040046 PMCID: PMC8888466 DOI: 10.1007/s12020-022-02981-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 01/09/2022] [Indexed: 11/09/2022]
Abstract
Irisin is an exercise-induced myokine/adipokine in mice and humans that plays an important role in 'browning' of white adipose tissue and has shown great potential as a treatment for some metabolic diseases, such as obesity, insulin resistance, and inflammation. The circulating irisin level is reported to be associated with exercise, obesity, diet, diseases, and exposure to different pharmacological agents. Several studies have attempted to characterize the role of irisin in PCOS and other reproductive diseases, but contradictory results have been reported. Our previous study showed that irisin may serve further functions in folliculogenesis and fertility. In this review, we present the current knowledge on the physiology of irisin and its role in gonadal axis. Firstly, we describe irisin circulating levels and speculate on the potential mechanisms involved in irisin secretion and regulation. Then, we focus on the irisin levels in PCOS, and explore the relationships between, BMI, insulin resistance, and hyperandrogenism. Finally, we present the results from animal interventional studies and in vitro experiments to investigate the relationship between irisin and gonadal axis, indicating its novel effects on reproduction and fertility.
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Affiliation(s)
- Yunyao Luo
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproduction and Genetics Institute, Chongqing Health Center for women and Children, No.64 Jin Tang Street, Yu Zhong District, Chongqing, 400013, China
| | - Xiaoyong Qiao
- Reproductive Endocrinology and Regulation Laboratory West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Liangzhi Xu
- Reproductive Endocrinology and Regulation Laboratory West China Second University Hospital, Sichuan University, Chengdu, China.
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China.
| | - Guoning Huang
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Reproduction and Genetics Institute, Chongqing Health Center for women and Children, No.64 Jin Tang Street, Yu Zhong District, Chongqing, 400013, China.
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Tuğgüm S, Bozkir Ç, Aslan S, Yilmaz A, Çelikkol A. Evaluation of vaspin and irisin hormones levels in diabetic rats and relationship with diet. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2022. [DOI: 10.3233/mnm-211586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Type-2 diabetes with an increasing prevalence is a public health problem. Irisin and vaspin, which are secreted a majority from adipose tissue, are discovered hormones recently, and their effects on diabetes are studied. OBJECTIVE: This study aims to the effects of diet on these hormones levels in diabetic rats. METHODS: In this study, ten-week-old 18 Wistar-Albino rats were divided into three groups randomly. The diabetic group (n = 6) was fed a high-fat diet (HFD). Other rats were divided into two control groups, one of them (n = 6) was fed a control diet (CD), and the other group (n = 6) was fed HFD. The feeding time for all groups was 4 weeks. Streptozotocin (STZ) was used for diabetes induction in rats. RESULTS: At the end of the four weeks, the body weight of the diabetic group decreased significantly. In the diabetic group compared to the control groups, it was observed that besides high fasting blood glucose (FBG), triglyceride, total cholesterol levels, and insulin resistance (HOMA-IR) scores. Vaspin levels were significantly higher in diabetic rats, while irisin levels were similar between groups. Besides, vaspin level correlation with biochemical parameters such as glucose, triglycerides, total cholesterol, and HOMA-IR score was significant. CONCLUSION: In conclusion, this study showed that besides the evidence that vaspine is a hormone associated with diabetes, diet composition could give an opinion about the type-2 diabetes process by looking at hormone levels.
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Affiliation(s)
- Sergen Tuğgüm
- Tekirdağ Namık Kemal University, School of Health, Department of Nutrition and Dietetics, Tekirdağ/Turkey
| | - Çiğdem Bozkir
- Inonu University, Faculty of Health Sciences, Department of Nutrition an Dietetics, Malatya/Turkey
| | - Serkan Aslan
- Tekirdağ Namık Kemal University, School of Health, Department of Nutrition and Dietetics, Tekirdağ/Turkey
| | - Ahsen Yilmaz
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Medical Biochemistry, Tekirdağ/Turkey
| | - Aliye Çelikkol
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Medical Biochemistry, Tekirdağ/Turkey
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Beneficial effects of MgSO 4 on TFAM, UPC3 and FNDC5 mRNA expressions in skeletal muscle of type 2 diabetic rats: a possible mechanism to improve insulin resistance. Mol Biol Rep 2022; 49:2795-2803. [PMID: 35064400 DOI: 10.1007/s11033-021-07091-5] [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: 10/23/2021] [Accepted: 12/16/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Hypomagnesemia has been associated with development of type 2 diabetes mellitus (T2DM) and its complications. Irisin has beneficial effects on glucose uptake and improves hepatic glucose and lipid metabolism. In this study, we aimed to evaluate the effects of long-term treatment of MgSO4 and insulin on insulin resistance, dyslipidemia, serum and hepatic irisin levels, skeletal muscle gene expression of fibronectin type III domain-containing protein 5 (FNDC5), mitochondrial transcription factor A (TFAM) and mitochondrial uncoupling protein 3 (UCP3) in T2DM rats. METHODS AND RESULTS Twenty-four rats were divided into four groups: Control group, diabetic control (DC) using a high-fat diet + streptozotocin, insulin-treated diabetic group (DC + Ins), MgSO4-treated diabetic group (DC + Mg). At the end of therapies, serum concentrations of FBG, TG, insulin, Ox-LDL, along with serum and hepatic irisin levels were measured. FNDC5, TFAM, and UCP3 mRNA expressions were measured in the skeletal muscle by Real-time PCR. In comparison with DC group, MgSO4 therapy resulted in decreased FBG, TG, Ox-LDL, improved serum insulin and irisin levels, and increased mRNA expressions of FNDC5, UCP3 and TFAM. Insulin therapy significantly decreased FBG, Ox-LDL, FNDC5 and serum irisin levels compared with the control group. While, insulin therapy markedly increased TFAM and UCP3 compared with the DC group. CONCLUSIONS In conclusion, MgSO4 can improve insulin resistance and hyperlipidemia partly through decreasing Ox-LDL, increasing serum irisin levels as well as increasing FNDC5, TFAM, and UCP3 mRNA expressions in T2DM rats. These findings can be considered in the management of diabetes treatment.
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27
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Zhao R. Irisin at the crossroads of inter-organ communications: Challenge and implications. Front Endocrinol (Lausanne) 2022; 13:989135. [PMID: 36267573 PMCID: PMC9578559 DOI: 10.3389/fendo.2022.989135] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/20/2022] [Indexed: 12/02/2022] Open
Abstract
The physiological functions of organs are intercommunicated occurring through secreted molecules. That exercise can improve the physiological function of organs or tissues is believed by secreting myokines from muscle to target remote organs. However, the underlying mechanism how exercise regulates the inter-organ communications remains incompletely understood yet. A recently identified myokine-irisin, primarily found in muscle and adipose and subsequently extending to bone, heart, liver and brain, provides a new molecular evidence for the inter-organ communications. It is secreted under the regulation of exercise and mediates the intercommunications between exercise and organs. To best our understanding of the regulatory mechanism, this review discusses the recent evidence involving the potential molecular pathways of the inter-organ communications, and the interactions between signalings and irisin in regulating the impact of exercise on organ functions are also discussed.
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Liu R, Zhang Q, Peng N, Xu S, Zhang M, Hu Y, Chen Z, Tang K, He X, Li Y, Shi L. Inverse correlation between serum irisin and cardiovascular risk factors among Chinese overweight/obese population. BMC Cardiovasc Disord 2021; 21:570. [PMID: 34847893 PMCID: PMC8638330 DOI: 10.1186/s12872-021-02380-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 11/02/2021] [Indexed: 12/20/2022] Open
Abstract
Background Irisin is a novel myokine associated with obesity, which is a traditional cardiovascular risk factor (CVRF). The present study aimed to investigate the association between serum irisin and a single CVRF as well as the clustering of CVRFs among Chinese overweight/obese population. Methods A total of 98 overweight and 93 obese subjects without clinical treatments were enrolled in this study. Subjects were then divided into two groups, based on the serum irisin level: a low irisin group (1.10–13.44 ng/ml) and a high irisin group (13.49–29.9 ng/ml). The clustering of CVRFs, smoking, diabetes mellitus, dyslipidemia and hypertension, was classified as 0, 1, 2 and ≥ 3 CVRFs. The demographic and baseline clinical characteristics of all participants were collected and serum irisin was measured. Results The high serum irisin group had significantly higher high-density lipoprotein cholesterol but lower fasting plasma glucose than the low serum irisin group. Additionally, the high serum irisin group had a significantly lower prevalence of smoking, diabetes mellitus and dyslipidemia than the low serum irisin group. Increased serum irisin was significantly associated with a reduced risk of smoking and dyslipidemia in both the unadjusted and adjusted models. Furthermore, high serum irisin significantly reduced the risk of the prevalence of 1, 2 and ≥ 3 CVRFs. Conclusions among the Chinese overweight/obese populations, high serum irisin is negatively associated with smoking, dyslipidemia and the clustering of CVRFs. Thus, high serum irisin is potentially associated with a low risk of cardiovascular diseases in the Chinese overweight/obese population.
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Affiliation(s)
- Ruoyi Liu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Qiao Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Nianchun Peng
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Shujing Xu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Miao Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Ying Hu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Zhengyi Chen
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Kun Tang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Xi He
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China.,Department of Endocrinology and Metabolism, Guizhou Provincial People's Hospital, Guiyang, 550001, China
| | - Yi Li
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China
| | - Lixin Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, No. 28 Guiyi Road, Yunyan District, Guiyang, 550001, China.
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Wu S, Hassan FU, Luo Y, Fatima I, Ahmed I, Ihsan A, Safdar W, Liu Q, Rehman SU. Comparative Genomic Characterization of Buffalo Fibronectin Type III Domain Proteins: Exploring the Novel Role of FNDC5/Irisin as a Ligand of Gonadal Receptors. BIOLOGY 2021; 10:1207. [PMID: 34827201 PMCID: PMC8615036 DOI: 10.3390/biology10111207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/12/2021] [Accepted: 11/16/2021] [Indexed: 12/29/2022]
Abstract
FN-III proteins are widely distributed in mammals and are usually involved in cellular growth, differentiation, and adhesion. The FNDC5/irisin regulates energy metabolism and is present in different tissues (liver, brain, etc.). The present study aimed to investigate the physiochemical characteristics and the evolution of FN-III proteins and FNDC5/irisin as a ligand targeting the gonadal receptors including androgen (AR), DDB1 and CUL4 associated factor 6 (DCAF6), estrogen-related receptor β (ERR-β), estrogen-related receptor γ (ERR-γ), Krüppel-like factor 15 (KLF15), and nuclear receptor subfamily 3 group C member 1 (NR3C1). Moreover, the putative role of irisin in folliculogenesis and spermatogenesis was also elucidated. We presented the molecular structure and function of 29 FN-III genes widely distributed in the buffalo genome. Phylogenetic analysis, motif, and conserved domain pattern demonstrated the evolutionary well-conserved nature of FN-III proteins with a variety of stable to unstable, hydrophobic to hydrophilic, and thermostable to thermo-unstable properties. The comparative structural configuration of FNDC5 revealed amino acid variations but still the FNDC5 structure of humans, buffalo, and cattle was quite similar to each other. For the first time, we predicted the binding scores and interface residues of FNDC5/irisin as a ligand for six representative receptors having a functional role in energy homeostasis, and a significant involvement in folliculogenesis and spermatogenesis in buffalo.
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Affiliation(s)
- Siwen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530005, China; (S.W.); (Y.L.)
| | - Faiz-ul Hassan
- Institute of Animal and Dairy Sciences, University of Agriculture, Faisalabad 38040, Pakistan;
| | - Yuhong Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530005, China; (S.W.); (Y.L.)
| | - Israr Fatima
- Department of Bioinformatics and Biotechnology, Govt. College University, Faisalabad 38000, Pakistan;
| | - Ishtiaq Ahmed
- School of Medical Science, Gold Coast Campus, Griffith University, Southport, QLD 4222, Australia;
| | - Awais Ihsan
- Department of Biosciences, COMSATS University Islamabad, Sahiwal Campus, Sahiwal 57000, Pakistan;
| | - Warda Safdar
- Department of Biochemistry, Bahauddin Zakariya University, Multan 60000, Pakistan;
| | - Qingyou Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530005, China; (S.W.); (Y.L.)
| | - Saif ur Rehman
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning 530005, China; (S.W.); (Y.L.)
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Furino VDO, Alves JM, Marine DA, Sene-Fiorese M, Rodrigues CNDS, Arrais-Lima C, Mattiello SM, de Castro CA, Borra RC, Rocha MC, Malavazi I, Duarte ACGDO. Dietary Intervention, When Not Associated With Exercise, Upregulates Irisin/FNDC5 While Reducing Visceral Adiposity Markers in Obese Rats. Front Physiol 2021; 12:564963. [PMID: 34483949 PMCID: PMC8414258 DOI: 10.3389/fphys.2021.564963] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 06/01/2021] [Indexed: 12/21/2022] Open
Abstract
Obesity is an epidemic disease and the expansion of adipose tissue, especially visceral fat, promotes the secretion of factors that lead to comorbidities such as diabetes and cardiovascular diseases. Thus, diet and exercise have been proposed as an intervention to reverse these complications. An adipocytokine, known as irisin, mediates the beneficial effects of exercise. It has been proposed as a therapeutic potential in controlling obesity. In view of the above, this paper attempts to determine the modulation of irisin, visceral adiposity and biochemical markers in response to dietary intervention and aerobic exercise. To do this, 52 diet-induced obese male Wistar rats were divided into the following four groups: high-fat diet and exercise (HFD-Ex); HFD-Sedentary (HFD-Sed); chow-diet and exercise (CD-Exercise); and CD-Sed. The exercise-trained group performed a treadmill protocol for 60 min/day, 3 days/week for 8 weeks. Body mass (BM), body fat (BF), fat mass (FM), and fat-free mass (FFM) were analyzed. Mesenteric (MES), epididymal (EPI), and retroperitoneal (RET) adipose tissue was collected and histological analysis was performed. Biochemical irisin, triglycerides, glucose, insulin and inflammatory markers were determined and, FNDC5 protein expression was analyzed. In this study, the diet was the most important factor in reducing visceral adiposity in the short and long term. Exercise was an important factor in preserving muscle mass and reducing visceral depots after a long term. Moreover, the combination of diet and exercise can enhance these effects. Diet and exercise exclusively were the factors capable of increasing the values of irisin/FNDC5, however it did not bring cumulative effects of both interventions. Prescriptions to enhance the obesity treatments should involve reducing visceral adiposity by reducing the fat content in the diet associated with aerobic exercise.
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Affiliation(s)
- Vanessa de Oliveira Furino
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - João Manoel Alves
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Diego Adorna Marine
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Marcela Sene-Fiorese
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Carla Nascimento Dos Santos Rodrigues
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Cristina Arrais-Lima
- Department of Physiotherapy - DFisio-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Stela Márcia Mattiello
- Department of Physiotherapy - DFisio-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Cynthia Aparecida de Castro
- Department of Morphology and Pathology-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Ricardo Carneiro Borra
- Department of Genetics and Evolution-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Marina Campos Rocha
- Department of Genetics and Evolution-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Iran Malavazi
- Department of Genetics and Evolution-Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Ana Cláudia Garcia de Oliveira Duarte
- Department of Physical Education and Human Motricity - DEFMH, Biological and Health Sciences Center - CCBS, Federal University of São Carlos - UFSCar, São Carlos, Brazil
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31
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Fibronectin type III domain-containing 5 in cardiovascular and metabolic diseases: a promising biomarker and therapeutic target. Acta Pharmacol Sin 2021; 42:1390-1400. [PMID: 33214697 PMCID: PMC8379181 DOI: 10.1038/s41401-020-00557-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 10/13/2020] [Indexed: 12/11/2022] Open
Abstract
Cardiovascular and metabolic diseases are the leading causes of death and disability worldwide and impose a tremendous socioeconomic burden on individuals as well as the healthcare system. Fibronectin type III domain-containing 5 (FNDC5) is a widely distributed transmembrane glycoprotein that can be proteolytically cleaved and secreted as irisin to regulate glycolipid metabolism and cardiovascular homeostasis. In this review, we present the current knowledge on the predictive and therapeutic role of FNDC5 in a variety of cardiovascular and metabolic diseases, such as hypertension, atherosclerosis, ischemic heart disease, arrhythmia, metabolic cardiomyopathy, cardiac remodeling, heart failure, diabetes mellitus, and obesity.
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32
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Feraco A, Gorini S, Armani A, Camajani E, Rizzo M, Caprio M. Exploring the Role of Skeletal Muscle in Insulin Resistance: Lessons from Cultured Cells to Animal Models. Int J Mol Sci 2021; 22:ijms22179327. [PMID: 34502235 PMCID: PMC8430804 DOI: 10.3390/ijms22179327] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/22/2021] [Accepted: 08/25/2021] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle is essential to maintain vital functions such as movement, breathing, and thermogenesis, and it is now recognized as an endocrine organ. Muscles release factors named myokines, which can regulate several physiological processes. Moreover, skeletal muscle is particularly important in maintaining body homeostasis, since it is responsible for more than 75% of all insulin-mediated glucose disposal. Alterations of skeletal muscle differentiation and function, with subsequent dysfunctional expression and secretion of myokines, play a key role in the pathogenesis of obesity, type 2 diabetes, and other metabolic diseases, finally leading to cardiometabolic complications. Hence, a deeper understanding of the molecular mechanisms regulating skeletal muscle function related to energy metabolism is critical for novel strategies to treat and prevent insulin resistance and its cardiometabolic complications. This review will be focused on both cellular and animal models currently available for exploring skeletal muscle metabolism and endocrine function.
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Affiliation(s)
- Alessandra Feraco
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.F.); (S.G.); (A.A.)
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy;
| | - Stefania Gorini
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.F.); (S.G.); (A.A.)
| | - Andrea Armani
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.F.); (S.G.); (A.A.)
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy;
| | - Elisabetta Camajani
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy;
- PhD Programme in Endocrinological Sciences, Department of Experimental Medicine, University of Rome “La Sapienza”, 00161 Rome, Italy
| | - Manfredi Rizzo
- Promise Department, School of Medicine, University of Palermo, 90127 Palermo, Italy;
| | - Massimiliano Caprio
- Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele Roma, 00166 Rome, Italy; (A.F.); (S.G.); (A.A.)
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Roma Open University, 00166 Rome, Italy;
- Correspondence: ; Tel.: +39-065-225-3419
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33
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The Physiological Role of Irisin in the Regulation of Muscle Glucose Homeostasis. ENDOCRINES 2021; 2:266-283. [PMID: 35392577 PMCID: PMC8986094 DOI: 10.3390/endocrines2030025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Irisin is a myokine that primarily targets adipose tissue, where it increases energy expenditure and contributes to the beneficial effects of exercise through the browning of white adipose tissue. As our knowledge has deepened in recent years, muscle has been found to be a major target organ for irisin as well. Several studies have attempted to characterize the role of irisin in muscle to improve glucose metabolism through mechanisms such as reducing insulin resistance. Although they are very intriguing reports, some contradictory results make it difficult to grasp the whole picture of the action of irisin on muscle. In this review, we attempted to organize the current knowledge of the role of irisin in muscle glucose metabolism. We discussed the direct effects of irisin on glucose metabolism in three types of muscle, that is, skeletal muscle, smooth muscle, and the myocardium. We also describe irisin’s effects on mitochondria and its interactions with other hormones. Furthermore, to consider the relationship between the irisin-induced improvement of glucose metabolism in muscle and systemic disorders of glucose metabolism, we reviewed the results from animal interventional studies and human clinical studies.
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34
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Abstract
The beneficial effects of exercise on the brain are well known. In general, exercise offers an effective way to improve cognitive function in all ages, particularly in the elderly, who are considered the most vulnerable to neurodegenerative disorders. In this regard, myokines, hormones secreted by muscle in response to exercise, have recently gained attention as beneficial mediators. Irisin is a novel exercise-induced myokine, that modulates several bodily processes, such as glucose homeostasis, and reduces systemic inflammation. Irisin is cleaved from fibronectin type III domain containing 5 (FNDC5), a transmembrane precursor protein expressed in muscle under the control of peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α). The FNDC5/irisin system is also expressed in the hippocampus, where it stimulates the expression of the neurotrophin brain-derived neurotrophic factor in this area that is associated with learning and memory. In this review, we aimed to discuss the role of irisin as a key mediator of the beneficial effects of exercise on synaptic plasticity and memory in the elderly, suggesting its roles within the main promoters of the beneficial effects of exercise on the brain.
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35
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Effect of Seasonal Variation during Annual Cyclist Training on Somatic Function, White Blood Cells Composition, Immunological System, Selected Hormones and Their Interaction with Irisin. J Clin Med 2021; 10:jcm10153299. [PMID: 34362082 PMCID: PMC8348623 DOI: 10.3390/jcm10153299] [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: 06/10/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 12/02/2022] Open
Abstract
The aim of this study was to evaluate somatic, hormonal and immunological changes during the macrocycle of cyclists (9 well-trained men, age 25.6 ± 5.2 years and body weight 72.4 ± 7.35 kg). During the training macrocycle, four exercise control tests were carried out, and biochemical markers were measured in the laboratory. Seasonal training changes did not significantly disturb resting somatic and functional parameters, physical capacity (VO2max), body weight, the number of leukocytes and selected hormones. The secretory system of the organism did not respond significantly to the exercise stress in the training process, even with the increasing share of anaerobic processes in the subsequent periods of the macrocycle. Irisin and other parameters globally did not correlate with training volume. Irisin showed a significant correlation only with cortisol in the first period and human growth hormone in the second, and it showed a weak correlation in the third period with body mass and BMI. The lack of interactions between irisin level and other variables practically excludes its use in monitoring cyclist training. Future research would be complemented by the assessment of stress and postexercise changes in the cyclists’ macrocycle and expanding the research group to other athletes, including women.
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36
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Huang Z, Zhang Y, Zhou R, Yang L, Pan H. Lactate as Potential Mediators for Exercise-Induced Positive Effects on Neuroplasticity and Cerebrovascular Plasticity. Front Physiol 2021; 12:656455. [PMID: 34290615 PMCID: PMC8287254 DOI: 10.3389/fphys.2021.656455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/09/2021] [Indexed: 01/22/2023] Open
Abstract
The accumulated evidence from animal and human studies supports that exercise is beneficial to physical health. Exercise can upregulate various neurotrophic factors, activate neuroplasticity, and play a positive role in improving and enhancing cerebrovascular function. Due to its economy, convenience, and ability to prevent or ameliorate various aging-related diseases, exercise, a healthy lifestyle, is increasingly popularized by people. However, the mechanism by which exercise performs this function and how it is transmitted from muscles to the brain remains incompletely understood. Here, we review the beneficial effects of exercise with different intensities on the brain with a focus on the positive effects of lactate on neuroplasticity and cerebrovascular plasticity. Based on these recent studies, we propose that lactate, a waste previously misunderstood as a by-product of glycolysis in the past, may be a key signal molecule that regulates the beneficial adaptation of the brain caused by exercise. Importantly, we speculate that a central protective mechanism may underlie the cognitive benefits induced by exercise.
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Affiliation(s)
- Zhihai Huang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Yulan Zhang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Ruixue Zhou
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Luodan Yang
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
| | - Hongying Pan
- Cognitive and Sports Neuroscience Laboratory, National Demonstration Center for Experimental Sports Science Education, College of Physical Education and Sports Science, South China Normal University, Guangzhou, China
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37
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Huberman MA, d'Adesky ND, Niazi QB, Perez-Pinzon MA, Bramlett HM, Raval AP. Irisin-Associated Neuroprotective and Rehabilitative Strategies for Stroke. Neuromolecular Med 2021; 24:62-73. [PMID: 34215971 DOI: 10.1007/s12017-021-08666-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 05/19/2021] [Indexed: 10/20/2022]
Abstract
Irisin, a newly discovered protein hormone that is secreted in response to low frequency whole body vibration (LFV), could be a promising post-stroke rehabilitation therapy for patients who are frail and cannot comply with regular rehabilitation therapy. Irisin is generated from a membrane-bound precursor protein fibronectin type III domain-containing protein 5 (FNDC5). Aside from being highly expressed in muscle, FNDC5 is highly expressed in the brain. The cleaved form of FNDC5 was found in the cerebrospinal fluid as well as in various regions of the brain. Numerous studies suggest that irisin plays a key role in brain metabolism and inflammation regulation. Both the metabolism and inflammation govern stroke outcome, and in a published study, we demonstrated that LFV therapy following middle cerebral artery occlusion significantly reduced innate immune response, improved motor function and infarct volume in reproductively senescent female rats. The observed effect of LFV therapy could be working via irisin, therefore, the current review focuses to understand various aspects of irisin including its mechanism of action on the brain.
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Affiliation(s)
- Melissa Ann Huberman
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA
| | - Nathan D d'Adesky
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA
| | - Qismat Bahar Niazi
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA
| | - Miguel A Perez-Pinzon
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA
| | - Helen M Bramlett
- Department of Neurological Surgery, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA.,Bruce W. Carter Department of Veterans Affairs Medical Center, Miami, FL, 33136, USA
| | - Ami P Raval
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, 33136, USA.
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38
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Jodeiri Farshbaf M, Alviña K. Multiple Roles in Neuroprotection for the Exercise Derived Myokine Irisin. Front Aging Neurosci 2021; 13:649929. [PMID: 33935687 PMCID: PMC8086837 DOI: 10.3389/fnagi.2021.649929] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/15/2021] [Indexed: 12/11/2022] Open
Abstract
Exercise has multiple beneficial effects on health including decreasing the risk of neurodegenerative diseases. Such effects are thought to be mediated (at least in part) by myokines, a collection of cytokines and other small proteins released from skeletal muscles. As an endocrine organ, skeletal muscle synthesizes and secretes a wide range of myokines which contribute to different functions in different organs, including the brain. One such myokine is the recently discovered protein Irisin, which is secreted into circulation from skeletal muscle during exercise from its membrane bound precursor Fibronectin type III domain-containing protein 5 (FNDC5). Irisin contributes to metabolic processes such as glucose homeostasis and browning of white adipose tissue. Irisin also crosses the blood brain barrier and initiates a neuroprotective genetic program in the hippocampus that culminates with increased expression of brain derived neurotrophic factor (BDNF). Furthermore, exercise and FNDC5/Irisin have been shown to have several neuroprotective effects against injuries in ischemia and neurodegenerative disease models, including Alzheimer's disease. In addition, Irisin has anxiolytic and antidepressant effects. In this review we present and summarize recent findings on the multiple effects of Irisin on neural function, including signaling pathways and mechanisms involved. We also discuss how exercise can positively influence brain function and mental health via the "skeletal muscle-brain axis." While there are still many unanswered questions, we put forward the idea that Irisin is a potentially essential mediator of the skeletal muscle-brain crosstalk.
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Affiliation(s)
| | - Karina Alviña
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, United States.,Department of Neuroscience, University of Florida, Gainesville, FL, United States
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39
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Bretland KA, Lin L, Bretland KM, Smith MA, Fleming SM, Dengler-Crish CM. Irisin treatment lowers levels of phosphorylated tau in the hippocampus of pre-symptomatic female but not male htau mice. Neuropathol Appl Neurobiol 2021; 47:967-978. [PMID: 33768561 PMCID: PMC9292848 DOI: 10.1111/nan.12711] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/15/2021] [Accepted: 03/18/2021] [Indexed: 12/12/2022]
Abstract
AIMS Irisin is a hormone cleaved from fibronectin type-III domain-containing protein 5 in response to exercise and may be therapeutic in Alzheimer's disease (AD). Irisin is shown to repair damage caused by midlife cardiometabolic risk factors for AD (i.e., diabetes mellitus; hypertension), prevent neural amyloid beta aggregation and reduce neuroinflammation. However, there are no investigations of irisin's effect on AD-associated tauopathy in the brain. This study begins to address this gap in knowledge. METHODS Transgenic htau mice that selectively develop age-related tauopathy were treated with recombinant irisin (100 µg/kg weekly i.p.) beginning at a pre-symptomatic age (4 months) to determine if irisin could prevent emergence of early neuropathology. One month later, mice were sacrificed to collect brain tissue and serum. Protein levels of ptau (serine 202), inflammatory cytokine tumour necrosis factor alpha (TNFα) and FNDC5 were quantified using capillary-based western blotting (Wes). RESULTS Our data show that irisin treatment significantly reduced ptau and TNFα in the hippocampus and serum of female htau mice compared to vehicle-treated controls. Irisin treatment did not alter ptau levels in male htau hippocampus and appeared to enhance both neural and systemic TNFα levels. CONCLUSIONS This study provides the first evidence that enhancing the endogenous hormone irisin may be therapeutic against emerging neuropathology in a tauopathy-selective AD model. This is important because there are currently no disease-modifying therapeutics available for AD, and few agents in development address the multiple disease targets irisin appears to-making irisin an intriguing therapeutic candidate for further investigation.
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Affiliation(s)
- Katie A Bretland
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Li Lin
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Kimberly M Bretland
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.,Kent State University, Kent, OH, USA
| | - Matthew A Smith
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.,Akron Children's Hospital, Rebecca D. Considine Research Institute, Akron, OH, USA
| | - Sheila M Fleming
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
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40
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Associations of Circulating Irisin with FNDC5 Expression in Fat and Muscle in Type 1 and Type 2 Diabetic Mice. Biomolecules 2021; 11:biom11020322. [PMID: 33672565 PMCID: PMC7924053 DOI: 10.3390/biom11020322] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 02/07/2023] Open
Abstract
Irisin is an exercise-induced myokine, suggested to exert beneficial effects on metabolism. However, the studies on the regulation of irisin secretion and the expression of its precursor FNDC5 have shown conflicting data. The discrepancies among previous correlation studies in humans are related to the heterogeneity of the study population. The fact that irisin is not only a myokine but also an adipokine leads to the further complexity of the role of irisin in metabolic regulation. In this study, we examined the regulation of FNDC5 expression and irisin in circulation in both type 1 and type 2 diabetic mice, and their potential relationships with metabolic parameters. In streptozotocin (STZ)-induced type 1 diabetic mice, high-fat diet (HFD)-induced obese mice and db/db mice, the circulating irisin as well as FNDC5 gene expression in subcutaneous fat was downregulated. Muscle FNDC5 expression was only significantly lower in STZ mice, and epididymal fat FNDC5 expression was unaltered. It is interesting to note that plasma irisin levels correlated positively with subcutaneous fat FNDC5 expression, but not epididymal fat or muscle. Moreover, both irisin levels and subcutaneous fat FNDC5 correlated negatively with markers of insulin resistance. These results suggest a regulatory role for subcutaneous fat-derived FNDC5/irisin in metabolic disease.
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41
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Pignataro P, Dicarlo M, Zerlotin R, Zecca C, Dell’Abate MT, Buccoliero C, Logroscino G, Colucci S, Grano M. FNDC5/Irisin System in Neuroinflammation and Neurodegenerative Diseases: Update and Novel Perspective. Int J Mol Sci 2021; 22:ijms22041605. [PMID: 33562601 PMCID: PMC7915567 DOI: 10.3390/ijms22041605] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 02/07/2023] Open
Abstract
Irisin, the circulating peptide originating from fibronectin type III domain-containing protein 5 (FNDC5), is mainly expressed by muscle fibers under peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1α) control during exercise. In addition to several beneficial effects on health, physical activity positively affects nervous system functioning, particularly the hippocampus, resulting in amelioration of cognition impairments. Recently, FNDC5/irisin detection in hippocampal neurons and the presence of irisin in the cerebrospinal fluid opened a new intriguing chapter in irisin history. Interestingly, in the hippocampus of mice, exercise increases FNDC5 levels and upregulates brain-derived neurotrophic factor (BDNF) expression. BDNF, displaying neuroprotection and anti-inflammatory effects, is mainly produced by microglia and astrocytes. In this review, we discuss how these glial cells can morphologically and functionally switch during neuroinflammation by modulating the expression of a plethora of neuroprotective or neurotoxic factors. We also focus on studies investigating the irisin role in neurodegenerative diseases (ND). The emerging involvement of irisin as a mediator of the multiple positive effects of exercise on the brain needs further studies to better deepen this issue and the potential use in therapeutic approaches for neuroinflammation and ND.
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Affiliation(s)
- Patrizia Pignataro
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari, 70124 Bari, Italy; (P.P.); (M.D.); (G.L.); (S.C.)
- Department of Emergency and Organ Transplantation, University of Bari, 70124 Bari, Italy; (R.Z.); (C.B.)
| | - Manuela Dicarlo
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari, 70124 Bari, Italy; (P.P.); (M.D.); (G.L.); (S.C.)
| | - Roberta Zerlotin
- Department of Emergency and Organ Transplantation, University of Bari, 70124 Bari, Italy; (R.Z.); (C.B.)
| | - Chiara Zecca
- Center for Neurodegenerative Diseases and the Aging Brain, Department of Clinical Research in Neurology, University of Bari, “Pia Fondazione Card G. Panico” Hospital Tricase, 73039 Lecce, Italy; (C.Z.); (M.T.D.)
| | - Maria Teresa Dell’Abate
- Center for Neurodegenerative Diseases and the Aging Brain, Department of Clinical Research in Neurology, University of Bari, “Pia Fondazione Card G. Panico” Hospital Tricase, 73039 Lecce, Italy; (C.Z.); (M.T.D.)
| | - Cinzia Buccoliero
- Department of Emergency and Organ Transplantation, University of Bari, 70124 Bari, Italy; (R.Z.); (C.B.)
| | - Giancarlo Logroscino
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari, 70124 Bari, Italy; (P.P.); (M.D.); (G.L.); (S.C.)
- Center for Neurodegenerative Diseases and the Aging Brain, Department of Clinical Research in Neurology, University of Bari, “Pia Fondazione Card G. Panico” Hospital Tricase, 73039 Lecce, Italy; (C.Z.); (M.T.D.)
| | - Silvia Colucci
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari, 70124 Bari, Italy; (P.P.); (M.D.); (G.L.); (S.C.)
| | - Maria Grano
- Department of Emergency and Organ Transplantation, University of Bari, 70124 Bari, Italy; (R.Z.); (C.B.)
- Correspondence: ; Tel.: +39-080-5478-361
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Yang Y, Pullisaar H, Landin MA, Heyward CA, Schröder M, Geng T, Grano M, Reseland JE. FNDC5/irisin is expressed and regulated differently in human periodontal ligament cells, dental pulp stem cells and osteoblasts. Arch Oral Biol 2021; 124:105061. [PMID: 33508625 DOI: 10.1016/j.archoralbio.2021.105061] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 01/02/2021] [Accepted: 01/10/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To examine the expression and regulation of fibronectin type III domain-containing protein 5/irisin (FNDC5/irisin) in primary human periodontal ligament (hPDL) cells, dental pulp stem cells (hDPCs) and osteoblasts (hOBs). METHODS FNDC5/irisin was identified in sections of paraffin embedded rat maxillae, cryo-sections of 3D cultured spheroids hPDL cells, hDPCs and hOBs, 2D cultured hPDL cells, hDPCs and hOBs by immunohistochemistry. The expression of FNDC5/irisin was identified by qPCR, followed by sequencing of the qPCR product. Regulation of FNDC5/irisin expression in hPDL cells, hDPCs and hOBs were evaluated after administration of different concentrations of irisin and all-trans retinoic acid (ATRA). qPCR and ELISA were used to identify expression and secretion of FNDC5/irisin in odontoblast-like differentiation of hDPCs. RESULTS FNDC5/irisin was confirmed to be present in rat periodontium and dental pulp regions, as well as in 2D and 3D cultured hPDL cells, hDPCs and hOBs. BLAST analyses verified the generated nucleotide alignments matched human FNDC5/irisin. FNDC5/irisin gene expression was enhanced during odontoblast-like differentiation of hDPCs whereas the secretion of the protein was decreased compared to control. The protein signals in rat periodontal and pulpal tissues were higher than that of alveolar bone, and the expression of FNDC5/irisin was differently regulated by recombinant irisin and ATRA in hPDL cells and hDPCs compared to hOBs. CONCLUSIONS FNDC5/irisin expression was verified in rodent periodontium and dental pulp, and in hPDL cells, hDPCs and hOBs. The FNDC5/irisin expression was regulated by recombinant irisin and ATRA. Finally, expression and secretion of FNDC5/irisin were affected during odontoblast-like differentiation of hDPCs.
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Affiliation(s)
- Yang Yang
- Department of Biomaterials, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Helen Pullisaar
- Department of Orthodontics, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Maria A Landin
- Department of Biomaterials, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | | | - Maria Schröder
- Department of Biomaterials, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Tianxiang Geng
- Department of Biomaterials, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Maria Grano
- Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | - Janne Elin Reseland
- Department of Biomaterials, Faculty of Dentistry, University of Oslo, Oslo, Norway.
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Yang L, Zhi S, Yang G, Qin C, Zhao W, Niu M, Zhang W, Tang W, Yan X, Zhang Y, Meng X, Lu R, Nie G. Molecular identification of FNDC5 and effect of irisin on the glucose metabolism in common carp (Cyprinus carpio L.). Gen Comp Endocrinol 2021; 301:113647. [PMID: 33166532 DOI: 10.1016/j.ygcen.2020.113647] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/01/2020] [Accepted: 10/06/2020] [Indexed: 12/25/2022]
Abstract
Irisin, encoded by fibronectin type III domain-containing protein 5 (FNDC5) gene, plays a role in energy expenditure and insulin sensitivity in mice. In fish, the function of irisin related to glucose metabolism is less reported. It may increase glucose utilization in fish. The aim of the present study was to characterize the regulatory role of irisin in glucose metabolism in common carp (Cyprinus carpio L.). In this study, FNDC5a and FNDC5b were isolated from common carp. The cDNA of FNDC5a and FNDC5b were 722 bp and 714 bp, encoding 221 and 207 amino acids, respectively. FNDC5a was abundantly expressed in the brain and gonad. FNDC5b was mainly expressed in brain. Different expression pattern of FNDC5a and FNDC5b under fasting/refeeding and OGTT experiment were identified. The recombinant common carp irisinA and irisinB were prepared by prokaryotic expression system. Glucose concentration was decreased in treatment with irisinA or irisinB in the in vitro and in vivo experiments. The mRNA expression levels of gluconeogenesis-related genes were significantly down-regulated, while the mRNA expression of glycolysis-related genes were significantly up-regulated after treatment with recombinant irisinA or irisinB in liver in vivo and in primary hepatocytes in vitro. Our research shows that irisin inhibits hepatic gluconeogenesis and promotes hepatic glycolysis. Taken together, this study for the first time revealed the two subtypes of FNDC5 and explored the function and mechanisms of irisinA and irisinB in fish glucose homeostasis.
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Affiliation(s)
- Liping Yang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Shaoyang Zhi
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Guokun Yang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Chaobin Qin
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Wenli Zhao
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Mingming Niu
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Wenlei Zhang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Wenyu Tang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Xiao Yan
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Yuru Zhang
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Xiaolin Meng
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Ronghua Lu
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China
| | - Guoxing Nie
- College of Fisheries, Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, No. 46 Jianshe Road, Xinxiang 453007, PR China.
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Basini G, Bussolati S, Iannarelli M, Ragionieri L, Grolli S, Ramoni R, Dodi A, Gazza F, Grasselli F. The myokine irisin: localization and effects in swine late medium and large antral ovarian follicle. Domest Anim Endocrinol 2021; 74:106576. [PMID: 33120167 DOI: 10.1016/j.domaniend.2020.106576] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 01/10/2023]
Abstract
Irisin is mainly synthesized by skeletal muscle tissue, where it is believed to be responsible for the benefits of exercise on metabolism and cardiovascular system. In adipose tissue, its best-known effect is the browning of white adipocytes, resulting in the increase of thermogenesis and energy expenditure. As it has been largely documented that metabolic dysfunctions can frequently be associated with reductions in fertility, the possible involvement of this molecule in the regulation of reproductive processes represents an issue to be addressed. On this basis, the first aim of this work was the evaluation of the presence of irisin in the swine ovary; then, we investigated the expression of the associated molecules FNDC5, PGC-1α, and PPAR-γ. To verify a potential modulatory role both on ovarian function and on redox status, cell growth, steroidogenesis, production of superoxide anion and nitric oxide, the nonenzymatic antioxidant scavengers, were assessed in vitro on granulosa cells treated with increasing concentrations of irisin (50, 100, and 150 ng/mL). The data collected demonstrate the presence of irisin in swine ovarian follicle. Moreover, the highest concentrations tested stimulated metabolic activity and inhibited cell proliferation (P < 0.05); the peptide exerted a biphasic effect on progesterone (P < 0.01) production and, at the highest concentrations, inhibited nitric oxide while stimulated the nonenzymatic antioxidant power (P < 0.05). Superoxide anion and estradiol 17β were unaffected. The demonstration of the local presence of irisin at the ovarian level and the highlighted effects allow us to qualify this molecule as a potential physiological regulator of follicular function.
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Affiliation(s)
- G Basini
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy.
| | - S Bussolati
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - M Iannarelli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - L Ragionieri
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - S Grolli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - R Ramoni
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - A Dodi
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - F Gazza
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
| | - F Grasselli
- Dipartimento di Scienze Medico-Veterinarie, Università di Parma, Via del Taglio 10, 43126 Parma, Italy
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The "irisin system": From biological roles to pharmacological and nutraceutical perspectives. Life Sci 2020; 267:118954. [PMID: 33359670 DOI: 10.1016/j.lfs.2020.118954] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/30/2020] [Accepted: 12/16/2020] [Indexed: 02/08/2023]
Abstract
The scientific interest in irisin, a myokine discovered in 2012, has grown exponentially in recent years. Irisin, which is mainly produced in skeletal muscle, influences the browning process of adipose tissue and lipid and energy metabolism. Recent discoveries highlight that the potential of this hormone may have been underestimated. In the first part of this review, reports on irisin structure and molecules involved in its metabolic pathway are shown. Furthermore, data related to unclear aspects are also reported: distribution, different gene expression of its precursors in different tissues, physiological levels of circulating irisin, and pharmacokinetic and pharmacodynamic profile. The second part of this work focuses on exogenous stimuli and pharmacological agents which regulate the metabolic pathway of irisin and its serum concentration. In addition to physical exercise and exposure to low temperatures, which were early recognized as exogenous stimuli able to promote the production of this myokine, preclinical and clinical evidence demonstrates the ability of natural and synthetic molecules to interfere with this metabolic pathway. Current experimental data on irisin cannot dissolve all doubts related to this interesting molecule, but they certainly underline its potential for therapeutic purposes. Thus, identification of new pharmacological tools able to act on the irisin pathway is a challenging issue for biomedical research.
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Liu Y, Zhu C, Guo J, Chen Y, Meng C. The Neuroprotective Effect of Irisin in Ischemic Stroke. Front Aging Neurosci 2020; 12:588958. [PMID: 33414714 PMCID: PMC7782245 DOI: 10.3389/fnagi.2020.588958] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022] Open
Abstract
Irisin is a PGC-1α-dependent myokine that causes increased energy expenditure by driving the development of white adipose tissue into brown fat-like tissue. Exercise can improve irisin levels and lead to its release into the blood. In ischemic stroke, neurons are always sensitive to energy supply; after a series of pathophysiological processes, reactive oxygen species that are detrimental to cell survival via mitochondrial dysfunction are generated in large quantities. As a protein associated with exercise, irisin can alleviate brain injury in the pathogenesis of ischemic stroke. It is thought that irisin can upregulate the levels of brain-derived neurotrophic factor (BDNF), which protects nerve cells from injury during ischemic stroke. Furthermore, the release of irisin into the blood via exercise influences the mitochondrial dynamics crucial to maintaining the normal function of nerve cells. Consequently, we intended to summarize the known effects of irisin during ischemic stroke.
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Affiliation(s)
- Yaqiang Liu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chunhua Zhu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jiahui Guo
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yonghong Chen
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chaoyue Meng
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, China
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Tsai CL, Pai MC. Circulating levels of Irisin in obese individuals at genetic risk for Alzheimer's disease: Correlations with amyloid-β, metabolic, and neurocognitive indices. Behav Brain Res 2020; 400:113013. [PMID: 33186636 DOI: 10.1016/j.bbr.2020.113013] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 12/15/2022]
Abstract
Irisin is involved in various metabolic pathways and is suggested to be a potential agent capable of preventing onset of Alzheimer's disease (AD) and ameliorating AD neuropathology and cognitive deficits. In the present study, the serum levels of Irisin and Amyloid-β (Aβ) peptides and the neurocognitive performance among obese individuals at genetic risk for AD were investigated. The correlations between Irisin and AD-related neuropathological and neurocognitive indices were also explored. Thirty-two individuals with a family history of AD (ADFH) and obesity (ADFH-obesity group) and 32 controls (ADFH-non-obesity group) were recruited. Circulating levels of Irisin, Aβ peptides, and metabolic biomarkers, as well as neurocognitive performance [e.g., behavior and brain even-related potentials (ERP)] were measured during a visuospatial working memory task. Although the ADFH-obesity group exhibited comparable reaction times, ERP N2 latency and amplitudes, and P3 latency as compared to the ADFH-non-obesity group when performing the cognitive task, they exhibited significantly lower rates of accuracy and smaller P3 amplitudes in the higher memory-load condition, even when controlling for the blood pressure and cardiorespiratory fitness co-variables. The serum levels of leptin, insulin, and glucose, and HOMA-IR were significantly higher in the ADFH-obesity group relative to the ADFH-non-obesity group, but this was not the case for the levels of Aβ1-40 and Aβ1-42. The Irisin levels approached between-group significance. Partial correlations adjusting for cardiorespiratory fitness and blood pressure showed that Irisin levels were positively associated with neurophysiological (i.e., P3 amplitude) performance in the ADFH-obesity group. The Irisin levels were not significantly correlated with the levels of Aβ1-40 and Aβ1-42. The present findings suggest that ADFH individuals with obesity exhibited neurocognitive deficits when performing the visuospatial working memory task, and serum Irisin levels could be one of the influencing factors. However, the relationship between the circulating levels of Irisin and Aβ peptides needs more evidence to support this assumption.
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Affiliation(s)
- Chia-Liang Tsai
- Institute of Physical Education, Health and Leisure Studies, National Cheng Kung University, Taiwan.
| | - Ming-Chyi Pai
- Division of Behavioral Neurology, Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Taiwan; Alzheimer's Disease Research Center, National Cheng Kung University Hospital, Taiwan
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Kirat D, Hamada M, Moustafa A, Miyasho T. Irisin/FNDC5: A participant in camel metabolism. Saudi J Biol Sci 2020; 28:693-706. [PMID: 33424357 PMCID: PMC7783842 DOI: 10.1016/j.sjbs.2020.10.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/31/2022] Open
Abstract
The quantification, localization, production, function, and regulation of irisin/FNDC5 in camel species have not been previously studied. The objective of this study was to detect the irisin content in Arabian camel blood and tissues and study the gene expression of FNDC5 and PGC-1α in camel skeletal muscles and white adipose tissue depots under basal conditions. To monitor if exercise influences blood and tissue irisin protein levels as well as FNDC5 and PGC-1α gene expression levels, we analyzed irisin concentrations in the serum, skeletal muscles (soleus and gastrocnemius), and white adipose tissues (hump, subcutaneous, visceral, epididymal, and perirenal) in both control (n = 6) and exercised group (n = 6) using ELISA and determined the cellular localization of irisin/FNDC5 and the mRNA levels of FNDC5 and PGC-1α in skeletal muscles and adipose tissues via immunohistochemistry and real-time PCR, respectively. The possible regulatory roles of exercise on some hormones and metabolites as well as the detection of links between serum irisin and other circulating hormones (insulin, leptin, and cortisol) and metabolites (glucose, free fatty acids, triglycerides, and ATP) were explored for the first time in camels. Our results indicated that exercise induces tissue-specific regulation of the camel irisin, FNDC5, and PGC-1α levels, which subsequently regulates the circulating irisin level. Significant associations were detected between the levels of irisin/FNDC5/PGC-1α in camels and the metabolic and hormonal responses to exercise. Our study suggested that irisin regulates, or is regulated by, glucose, FFA, insulin, leptin, and cortisol in camels. The novel results of the present study will serve as baseline data for camels.
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Affiliation(s)
- Doaa Kirat
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed Hamada
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Amira Moustafa
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Taku Miyasho
- Laboratory of Animal Biological Responses, Department of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan
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Irandoost P, Mesri Alamdari N, Saidpour A, Shidfar F, Roshanravan N, Asghari Jafarabadi M, Farsi F, Asghari Hanjani N, Vafa M. The effects of royal jelly and tocotrienol-rich fraction on impaired glycemic control and inflammation through irisin in obese rats. J Food Biochem 2020; 44:e13493. [PMID: 33020956 DOI: 10.1111/jfbc.13493] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 08/15/2020] [Accepted: 09/03/2020] [Indexed: 12/16/2022]
Abstract
The effects of royal jelly (RJ) and tocotrienol-rich fraction (TRF) on obesity-induced glucose intolerance and inflammation were assessed in the current study. Regarding irisin as an important adipomyokine that attenuates obesity-induced disorders, we evaluated whether RJ and TRF could exert their metabolism regulatory effects through irisin. Obese rats were fed a high-fat diet (HFD) with or without supplementation of RJ, TRF, or both, for 8 weeks. At the end of the intervention, weight, irisin, glycemic, and inflammatory indices were measured. The weight of the rats did not remarkably reduce in any of the groups. Glucose homeostasis and inflammation were improved when we added RJ and TRF to HFD. RJ elevated irisin concentration, but the effect of TRF on irisin was not noticeable. Our results indicated that, despite the lack of significant weight loss, RJ and TRF promoted healthy obesity. This improvement was mediated by irisin in RJ consuming rats. PRACTICAL APPLICATIONS: Obesity is a public health concern associated with several chronic disorders. The beneficial effects of irisin on obesity-related disorders are well-established. It is the first study assessing the effect of RJ and TRF as functional foods, with pharmacological and nutritional activities on obesity complications, through irisin mediation. Our study demonstrated that RJ exerts its metabolic regulatory effects by irisin as a mediator. Our investigation makes a remarkable contribution to the literature, because it suggests a new mechanism for the anti-obesity properties of RJ and TRF.
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Affiliation(s)
- Pardis Irandoost
- Student Research Committee, Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Naimeh Mesri Alamdari
- Student Research Committee, Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Atoosa Saidpour
- National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzad Shidfar
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.,Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Neda Roshanravan
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Asghari Jafarabadi
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farnaz Farsi
- Student Research Committee, Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.,Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Nazanin Asghari Hanjani
- Student Research Committee, Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Vafa
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Abstract
Background: Sarcopenia is a prevalent muscle abnormality characterized by progressive and generalized loss of skeletal muscle mass and strength, common among patients with decompensated advanced chronic liver disease (dACLD). Irisin is a recently identified myokine, which is mainly expressed and secreted by skeletal muscle. Pointing to the essential role of irisin in metabolic regulation and energy expenditure we hypothesize that it plays an important role in cirrhosis development and progression. Aim: To assess irisin serum levels in patients with dACLD, with different cirrhosis stage and etiology. To analyze relationship between sarcopenia and irisin serum levels. Methods: Serum irisin concentrations were measured with commercially available ELISA kits in 88 cirrhotic patients. Recorded parameters of muscle mass were hand-grip strength (HGS), mid-arm muscle circumference (MAC), and transversal psoas muscle index (TPMI). Results: There was no difference in serum irisin levels between cirrhotic patients with different Child-Pugh (CTP) and model of end-stage liver disease (MELD) score, and those with and without ascites. The Liver Frailty Index (LFI) was significantly higher in patients with more advanced liver disease according to CTP and MELD. There was no association between serum irisin level with MAC (r = 0.04, p = 0.74) nor with TPMI (r = 0.20, p = 0.06). We observed significant negative correlation between serum irisin level and age (r = −0.35, p < 0.001). Conclusions: Serum irisin levels did not correlate with sarcopenia. There was no difference in serum irisin levels between cirrhotic patients with and without diabetes. There was no difference in serum irisin levels among patients with more severe dACLD, although we observed significant LFI increase among patients with more advanced liver disease.
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