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Chen K, Ou B, Huang Q, Deng D, Xiang Y, Hu F. LncRNA NEAT1 aggravates human microvascular endothelial cell injury by inhibiting the Apelin/Nrf2/HO-1 signalling pathway in type 2 diabetes mellitus with obstructive sleep apnoea. Epigenetics 2024; 19:2293409. [PMID: 38232183 PMCID: PMC10795783 DOI: 10.1080/15592294.2023.2293409] [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: 09/06/2023] [Accepted: 12/05/2023] [Indexed: 01/19/2024] Open
Abstract
Long noncoding RNAs (lncRNAs) regulate the progression of type 2 diabetes mellitus complicated with obstructive sleep apnoea (T2DM-OSA). However, the role of the lncRNA nuclear paraspeckle assembly transcript 1 (NEAT1) in T2DM-OSA remains unknown. This study aimed to reveal the function of NEAT1 in T2DM-OSA and the underlying mechanism. KKAy mice were exposed to intermittent hypoxia (IH) or intermittent normoxia to generate a T2DM-OSA mouse model. HMEC-1 cells were treated with high glucose (HG) and IH to construct a T2DM-OSA cell model. RNA expression was detected by qRT-PCR. The protein expression of Apelin, NF-E2-related factor 2 (Nrf2), haem oxygenase-1 (HO-1), and up-frameshift suppressor 1 (UPF1) was assessed using western blot. Cell injury was evaluated using flow cytometry, enzyme-linked immunosorbent assay, and oxidative stress kit assays. RIP, RNA pull-down, and actinomycin D assays were performed to determine the associations between NEAT1, UPF1, and Apelin. NEAT1 expression was upregulated in the aortic vascular tissues of mice with T2DM exposed to IH and HMEC-1 cells stimulated with HG and IH, whereas Apelin expression was downregulated. The absence of NEAT1 protected HMEC-1 cells from HG- and IH-induced damage. Furthermore, NEAT1 destabilized Apelin mRNA by recruiting UPF1. Apelin overexpression decreased HG- and IH-induced injury to HMEC-1 cells by activating the Nrf2/HO-1 pathway. Moreover, NEAT1 knockdown reduced HG- and IH-induced injury to HMEC-1 cells through Apelin. NEAT1 silencing reduced HMEC-1 cell injury through the Apelin/Nrf2/HO-1 signalling pathway in T2DM-OSA.Abbreviations: LncRNAs, long non-coding RNAs; T2DM, type 2 diabetes mellitus; OSA, obstructive sleep apnoea; NEAT1, nuclear paraspeckle assembly transcript 1; IH, intermittent hypoxia; HMEC-1, human microvascular endothelial cells; HG, high glucose; Nrf2, NF-E2-related factor 2; UPF1, up-frameshift suppressor 1; HO-1, haem oxygenase-1; qRT-PCR, quantitative real-time polymerase chain reaction; ELISA, enzyme-linked immunosorbent assay; GAPDH, glyceraldehyde 3-phosphate dehydrogenase; TNF-α, tumour necrosis factor-α; CCK-8, Cell Counting Kit-8; IL-1β, interleukin-1β; ROS, reactive oxygen species; MDA, malondialdehyde; SOD, superoxide dismutase; RIP, RNA immunoprecipitation; SD, standard deviations; GSH, glutathione; AIS, acute ischaemic stroke; HMGB1, high mobility group box-1 protein; TLR4, toll-like receptor 4.
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Affiliation(s)
- Kai Chen
- Department of Cardiovascular Medicine Six Wards (Cardiovascular and Metabolic Diseases), Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Baiqing Ou
- Department of Cardiovascular Medicine Six Wards (Cardiovascular and Metabolic Diseases), Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Quan Huang
- Department of Cardiovascular Medicine Six Wards (Cardiovascular and Metabolic Diseases), Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Daqing Deng
- Department of Cardiovascular Medicine Six Wards (Cardiovascular and Metabolic Diseases), Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Yi Xiang
- Department of Cardiovascular Medicine Six Wards (Cardiovascular and Metabolic Diseases), Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Fang Hu
- Comprehensive internal medicine of Hunan Provincial People’s Hospital, Changsha, Hunan, China
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Zhou N, Gong L, Zhang E, Wang X. Exploring exercise-driven exerkines: unraveling the regulation of metabolism and inflammation. PeerJ 2024; 12:e17267. [PMID: 38699186 PMCID: PMC11064867 DOI: 10.7717/peerj.17267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/28/2024] [Indexed: 05/05/2024] Open
Abstract
Exercise has many beneficial effects that provide health and metabolic benefits. Signaling molecules are released from organs and tissues in response to exercise stimuli and are widely termed exerkines, which exert influence on a multitude of intricate multi-tissue processes, such as muscle, adipose tissue, pancreas, liver, cardiovascular tissue, kidney, and bone. For the metabolic effect, exerkines regulate the metabolic homeostasis of organisms by increasing glucose uptake and improving fat synthesis. For the anti-inflammatory effect, exerkines positively influence various chronic inflammation-related diseases, such as type 2 diabetes and atherosclerosis. This review highlights the prospective contribution of exerkines in regulating metabolism, augmenting the anti-inflammatory effects, and providing additional advantages associated with exercise. Moreover, a comprehensive overview and analysis of recent advancements are provided in this review, in addition to predicting future applications used as a potential biomarker or therapeutic target to benefit patients with chronic diseases.
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Affiliation(s)
- Nihong Zhou
- Key Laboratory of Physical Fitness and Exercise, Ministry of Education, Beijing Sport University, Beijing, China
- School of Sport Science, Beijing Sport University, Beijing, China
| | - Lijing Gong
- Key Laboratory of Physical Fitness and Exercise, Ministry of Education, Beijing Sport University, Beijing, China
- Key Laboratory for Performance Training & Recovery of General Administration of Sport, Beijing Sport University, Beijing, China
| | - Enming Zhang
- Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Lund University, Malmö, Sweden
- NanoLund Center for NanoScience, Lund University, Lund, Sweden
| | - Xintang Wang
- Key Laboratory for Performance Training & Recovery of General Administration of Sport, Beijing Sport University, Beijing, China
- China Institute of Sport and Health Science, Beijing Sport University, Beijing, China
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Zhang Y, Bharadhwaj VS, Kodamullil AT, Herrmann C. A network of transcriptomic signatures identifies novel comorbidity mechanisms between schizophrenia and somatic disorders. DISCOVER MENTAL HEALTH 2024; 4:11. [PMID: 38573526 PMCID: PMC10994898 DOI: 10.1007/s44192-024-00063-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/28/2024] [Indexed: 04/05/2024]
Abstract
The clinical burden of mental illness, in particular schizophrenia and bipolar disorder, are driven by frequent chronic courses and increased mortality, as well as the risk for comorbid conditions such as cardiovascular disease and type 2 diabetes. Evidence suggests an overlap of molecular pathways between psychotic disorders and somatic comorbidities. In this study, we developed a computational framework to perform comorbidity modeling via an improved integrative unsupervised machine learning approach based on multi-rank non-negative matrix factorization (mrNMF). Using this procedure, we extracted molecular signatures potentially explaining shared comorbidity mechanisms. For this, 27 case-control microarray transcriptomic datasets across multiple tissues were collected, covering three main categories of conditions including psychotic disorders, cardiovascular diseases and type II diabetes. We addressed the limitation of normal NMF for parameter selection by introducing multi-rank ensembled NMF to identify signatures under various hierarchical levels simultaneously. Analysis of comorbidity signature pairs was performed to identify several potential mechanisms involving activation of inflammatory response auxiliarily interconnecting angiogenesis, oxidative response and GABAergic neuro-action. Overall, we proposed a general cross-cohorts computing workflow for investigating the comorbid pattern across multiple symptoms, applied it to the real-data comorbidity study on schizophrenia, and further discussed the potential for future application of the approach.
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Affiliation(s)
- Youcheng Zhang
- Institute of Pharmacy and Molecular Biotechnology (IPMB) & BioQuant, Universität Heidelberg, 69120, Heidelberg, Germany
| | - Vinay S Bharadhwaj
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53757, Sankt Augustin, Germany
| | - Alpha T Kodamullil
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53757, Sankt Augustin, Germany
| | - Carl Herrmann
- Institute of Pharmacy and Molecular Biotechnology (IPMB) & BioQuant, Universität Heidelberg, 69120, Heidelberg, Germany.
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Karimi Z, Daryabor G, Masjedi F. Effects of conditioned media derived from human Wharton's jelly mesenchymal stem cells on diabetic nephropathy and hepatopathy via modulating TGF-β and apelin signaling pathways in male rats. BMC Endocr Disord 2024; 24:6. [PMID: 38178017 PMCID: PMC10768285 DOI: 10.1186/s12902-023-01535-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/26/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Diabetic nephropathy and hepatopathy are health problems described by specific renal and hepatic structure and function disturbances. The protective effects of the stem cell secretome have been shown in several kidney and liver diseases. The current study aims to evaluate the capability of conditioned media derived from human Wharton's jelly mesenchymal stem cells (hWJ-MSCs-CM) to alleviate diabetic complications. METHODS Twenty Sprague Dawley rats were made diabetic through injection of STZ (60 mg/kg, i.p.). At week 8, diabetic rats were divided into two groups: treated [DM + hWJ-MSCs-CM (500 µl/rat for three weeks, i.p.)] and not treated (DM). At the 11th week, three groups (control, DM, and DM + hWJ-MSCs-CM) were kept in metabolic cages, and urine was collected for 24 h. The serum samples were maintained for measuring fasting blood glucose (FBG) and kidney and liver functional analysis. The left kidney and liver parts were kept at -80 °C to assess apelin and transforming growth factor-beta (TGF-β) expression. The right kidney, pancreas, and liver parts were used for histopathologic evaluation. RESULTS DM was detected by higher FBG, microalbuminuria, increased albumin/creatinine ratio, and pancreas, renal, and hepatic structural disturbances. Diabetic hepatopathy was determined by increasing liver enzymes and decreasing total bilirubin. The TGF-β gene expression was significantly upregulated in the diabetic kidney and liver tissues. Apelin gene expression was significantly downregulated in the diabetic liver tissue but did not change in kidney tissue. Administration of hWJ-MSCs-CM improved renal and hepatic functional and structural disturbances. Moreover, CM therapy significantly decreased TGF-β expression and enhanced apelin expression in the kidney and liver tissues. CONCLUSION Human WJ-MSCs-CM may have protective effects on diabetic renal and hepatic complications. These effects may happen through the regulation of TGF-β and apelin signaling pathways.
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Affiliation(s)
- Zeinab Karimi
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamreza Daryabor
- Autoimmune Diseases Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Masjedi
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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Kamiński M, Mierzyński R, Poniedziałek-Czajkowska E, Sadowska A, Sotowski M, Leszczyńska-Gorzelak B. Comparative Evaluation of Adipokine Metrics for the Diagnosis of Gestational Diabetes Mellitus. Int J Mol Sci 2023; 25:175. [PMID: 38203346 PMCID: PMC10778639 DOI: 10.3390/ijms25010175] [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: 11/24/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Gestational diabetes mellitus (GDM) is one of the most common medical disorders in pregnancy. Adipokines, predominantly secreted by adipose tissue, are involved in numerous metabolic processes. The exact role of adipokines in the pathogenesis of GDM is still not well known, and numerous adipokines have been analysed throughout pregnancy and proposed as biomarkers of GDM. This study aimed to evaluate serum adiponectin, chemerin, lipocalin and apelin levels in GDM and non-GDM women, to assess them as clinically useful biomarkers of the occurrence of GDM and to demonstrate the correlation between the levels of the above adipokines in the blood serum and the increased risk of the development of GDM. The role of these adipokines in the pathogenesis of GDM was also analysed. The statistically significant differences between the levels of adiponectin (7234.6 vs. 9837.5 ng/mL, p < 0.0001), chemerin (264.0 vs. 206.7 ng/mL, p < 0.0001) and lipocalin (39.5 vs. 19.4 ng/mL, p < 0.0001) were observed between pregnant women with GDM and healthy ones. The diagnostic usefulness of the tested adipokines in detecting GDM was also assessed. The research results confirm the hypothesis on the significance of adiponectin, chemerin, lipocalin and apelin in the pathophysiological mechanisms of GDM. We speculate that these adipokines could potentially be established as novel biomarkers for the prediction and early diagnosis of GDM.
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Affiliation(s)
| | - Radzisław Mierzyński
- Chair and Department of Obstetrics and Perinatology, Medical University of Lublin, 20-954 Lublin, Poland; (M.K.); (A.S.); (M.S.); (B.L.-G.)
| | - Elżbieta Poniedziałek-Czajkowska
- Chair and Department of Obstetrics and Perinatology, Medical University of Lublin, 20-954 Lublin, Poland; (M.K.); (A.S.); (M.S.); (B.L.-G.)
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Monastero R, Magro D, Venezia M, Pisano C, Balistreri CR. A promising therapeutic peptide and preventive/diagnostic biomarker for age-related diseases: The Elabela/Apela/Toddler peptide. Ageing Res Rev 2023; 91:102076. [PMID: 37776977 DOI: 10.1016/j.arr.2023.102076] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/07/2023] [Accepted: 09/18/2023] [Indexed: 10/02/2023]
Abstract
Elabela (ELA), Apela or Toddler peptide is a hormone peptide belonging to the adipokine group and a component of apelinergic system, discovered in 2013-2014. Given its high homology with apelin, the first ligand of APJ receptor, ELA likely mediates similar effects. Increasing evidence shows that ELA has a critical function not only in embryonic development, but also in adulthood, contributing to physiological and pathological conditions, such as the onset of age-related diseases (ARD). However, still little is known about the mechanisms and molecular pathways of ELA, as well as its precise functions in ARD pathophysiology. Here, we report the mechanisms by which ELA/APJ signaling acts in a very complex network of pathways for the maintenance of physiological functions of human tissue and organs, as well as in the onset of some ARD, where it appears to play a central role. Therefore, we describe the possibility to use the ELA/APJ pathway, as novel biomarker (predictive and diagnostic) and target for personalized treatments of ARD. Its potentiality as an optimal peptide candidate for therapeutic ARD treatments is largely described, also detailing potential current limitations.
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Affiliation(s)
- Roberto Monastero
- Section of Neurology, Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Daniele Magro
- Cellular, Molecular and Clinical Pathological Laboratory, Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University of Palermo, 90134, Palermo, Italy
| | - Marika Venezia
- Cellular, Molecular and Clinical Pathological Laboratory, Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University of Palermo, 90134, Palermo, Italy
| | - Calogera Pisano
- Department of Cardiac Surgery, Tor Vergata University Rome, 00133 Rome, Italy
| | - Carmela Rita Balistreri
- Cellular, Molecular and Clinical Pathological Laboratory, Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University of Palermo, 90134, Palermo, Italy.
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Winkle P, Goldsmith S, Koren MJ, Lepage S, Hellawell J, Trivedi A, Tsirtsonis K, Abbasi SA, Kaufman A, Troughton R, Voors A, Hulot JS, Donal E, Kazemi N, Neutel J. A First-in-Human Study of AMG 986, a Novel Apelin Receptor Agonist, in Healthy Subjects and Heart Failure Patients. Cardiovasc Drugs Ther 2023; 37:743-755. [PMID: 35460392 DOI: 10.1007/s10557-022-07328-w] [Citation(s) in RCA: 6] [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] [Accepted: 02/13/2022] [Indexed: 01/10/2023]
Abstract
PURPOSE AMG 986 is a novel apelin receptor (APJ) agonist that improves cardiac contractility in animal models without adversely impacting hemodynamics. This phase 1b study evaluated the safety/tolerability, pharmacokinetics, and pharmacodynamics of AMG 986 in healthy subjects and patients with heart failure (HF). METHODS Healthy adults (Parts A/B) and HF patients (Part C) aged 18-85 years were randomized 3:1 to single-dose oral/IV AMG 986 or placebo (Part A); multiple-dose oral/IV AMG 986 or placebo (Part B); or escalating-dose oral AMG 986 or placebo (Part C). PRIMARY ENDPOINT treatment-emergent adverse events, laboratory values/vital signs/ECGs; others included AMG 986 pharmacokinetics, left ventricular (LV) function. RESULTS Overall, 182 subjects were randomized (AMG 986/healthy: n = 116, placebo, n = 38; AMG 986/HF: n = 20, placebo, n = 8). AMG 986 had acceptable safety profile; no clinically significant dose-related impact on safety parameters up to 650 mg/day was observed. AMG 986 exposures increased nonlinearly with increasing doses; minimal accumulation was observed. In HF with reduced ejection fraction patients, there were numerical increases in percent changes from baseline in LV ejection fraction and stroke volume by volumetric assessment with AMG 986 vs placebo (stroke volume increase not recapitulated by Doppler). CONCLUSIONS In healthy subjects and HF patients, short-term AMG 986 treatment was well tolerated. Consistent with this observation, clinically meaningful pharmacodynamic effects in HF patients were not observed. Changes in ejection fraction and stroke volume in HF patients suggest additional studies may be needed to better define the clinical utility and optimal dosing for this molecule. TRIAL REGISTRATION NUMBER ClinicalTrials.gov NCT03276728. DATE OF REGISTRATION September 8, 2017.
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Affiliation(s)
- Peter Winkle
- Anaheim Clinical Trials, 2441 W La Palma Ave, Anaheim, CA, 92801, USA
| | - Steven Goldsmith
- Hennepin Healthcare and the University of Minnesota, 715 S 8 St, Minneapolis, MN, 55415, USA
| | - Michael J Koren
- Jacksonville Center for Clinical Research, 4085 University Blvd S #1, Jacksonville, FL, 32216, USA
| | - Serge Lepage
- Department of Medicine, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Québec, J1H 5N4, Canada
| | | | - Ashit Trivedi
- Amgen Inc., One Amgen Center Dr, Thousand Oaks, CA, 91320, USA
| | - Kate Tsirtsonis
- Amgen Limited, 1 Uxbridge Business Park, Sanderson Rd, Uxbridge, UB8 1DH, UK
| | | | - Allegra Kaufman
- Amgen Inc., One Amgen Center Dr, Thousand Oaks, CA, 91320, USA
| | - Richard Troughton
- Department of Medicine, Christchurch Heart Institute, University of Otago, PO Box 4345, Christchurch, 8140, New Zealand
| | - Adriaan Voors
- Department of Cardiology (AB31), University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Jean-Sebastien Hulot
- Université de Paris, INSERM, PARCC, F-75006, Paris, France
- CIC1418 and DMU CARTE, AP-HP, Hôpital Européen Georges-Pompidou, F-75015, Paris, France
| | - Erwan Donal
- Universitaire Rennes, Centre Hospitalier Universitaire de Rennes, INSERM, LTSI - UMR 1099, 2 rue Henri Le Guilloux 35033, 35000, Rennes, France
| | - Navid Kazemi
- Palm Research Center, Inc., 9280 W Sunset Rd, Suite 306, Las Vegas, NV, 89148, USA
| | - Joel Neutel
- Orange County Research Center, 14351 Myford Rd, Suite B, Tustin, CA, 92780, USA
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Chae SA, Du M, Son JS, Zhu MJ. Exercise improves homeostasis of the intestinal epithelium by activation of apelin receptor-AMP-activated protein kinase signalling. J Physiol 2023; 601:2371-2389. [PMID: 37154385 PMCID: PMC10280693 DOI: 10.1113/jp284552] [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: 02/16/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023] Open
Abstract
Intestinal remodelling is dynamically regulated by energy metabolism. Exercise is beneficial for gut health, but the specific mechanisms remain poorly understood. Intestine-specific apelin receptor (APJ) knockdown (KD) and wild-type male mice were randomly divided into two subgroups, with/without exercise, to obtain four groups: WT, WT with exercise, APJ KD and APJ KD with exercise. Animals in the exercise groups were subjected to daily treadmill exercise for 3 weeks. Duodenum was collected at 48 h after the last bout of exercise. AMP-activated protein kinase (AMPK) α1 KD and wild-type mice were also utilized for investigating the mediatory role of AMPK on exercise-induced duodenal epithelial development. AMPK and peroxisome proliferator-activated receptor γ coactivator-1 α were upregulated by exercise via APJ activation in the intestinal duodenum. Correspondingly, exercise induced permissive histone modifications in the PR domain containing 16 (PRDM16) promoter to activate its expression, which was dependent on APJ activation. In agreement, exercise elevated the expression of mitochondrial oxidative markers. The expression of intestinal epithelial markers was downregulated due to AMPK deficiency, and AMPK signalling facilitated epithelial renewal. These data demonstrate that exercise-induced activation of the APJ-AMPK axis facilitates the homeostasis of the intestinal duodenal epithelium. KEY POINTS: Apelin receptor (APJ) signalling is required for improved epithelial homeostasis of the small intestine in response to exercise. Exercise intervention activates PRDM16 through inducing histone modifications, enhanced mitochondrial biogenesis and fatty acid metabolism in duodenum. The morphological development of duodenal villus and crypt is enhanced by the muscle-derived exerkine apelin through the APJ-AMP-activated protein kinase axis.
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Affiliation(s)
- Song Ah Chae
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Min Du
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Jun Seok Son
- Laboratory of Perinatal Kinesioepigenetics, Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164, USA
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Pang B, Jiang YR, Xu JY, Shao DX, Hao LY. Apelin/ELABELA-APJ system in cardiac hypertrophy: Regulatory mechanisms and therapeutic potential. Eur J Pharmacol 2023; 949:175727. [PMID: 37062502 DOI: 10.1016/j.ejphar.2023.175727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/03/2023] [Accepted: 04/14/2023] [Indexed: 04/18/2023]
Abstract
Heart failure is one of the most significant public health problems faced by millions of medical researchers worldwide. And pathological cardiac hypertrophy is considered one of the possible factors of increasing the risk of heart failure. Here, we introduce apelin/ELABELA-APJ system as a novel therapeutic target for cardiac hypertrophy, bringing about new directions in clinical treatment. Apelin has been proven to regulate cardiac hypertrophy through various pathways. And an increasing number of studies on ELABELA, the newly discovered endogenous ligand, suggest it can alleviate cardiac hypertrophy through mechanisms similar or different to apelin. In this review, we elaborate on the role that apelin/ELABELA-APJ system plays in cardiac hypertrophy and the intricate mechanisms that apelin/ELABELA-APJ affect cardiac hypertrophy. We also illuminate and make comparisons of the newly designed peptides and small molecules as agonists and antagonists for APJ, updating the breakthroughs in this field.
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Affiliation(s)
- Bo Pang
- China Medical University-The Queen's University of Belfast Joint College, Queen's University Belfast, Belfast Northern Ireland, BT9 7BL, United Kingdom.
| | - Yin-Ru Jiang
- China Medical University-The Queen's University of Belfast Joint College, Queen's University Belfast, Belfast Northern Ireland, BT9 7BL, United Kingdom.
| | - Jia-Yao Xu
- China Medical University-The Queen's University of Belfast Joint College, Queen's University Belfast, Belfast Northern Ireland, BT9 7BL, United Kingdom.
| | - Dong-Xue Shao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang, 110122, China.
| | - Li-Ying Hao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang, 110122, China.
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10
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İçen G, Dağlıoğlu G, Evran M. Evaluation of Apelin-13 levels in patients with diabetic nephropathy. Int Urol Nephrol 2023; 55:345-353. [PMID: 35925488 DOI: 10.1007/s11255-022-03323-0] [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: 10/25/2021] [Accepted: 07/25/2022] [Indexed: 01/25/2023]
Abstract
PURPOSE There is no clear information about the level of Apelin-13 in patients with diabetic nephropathy (DN). In this study, we investigated whether there is a relationship between Apelin-13 level and the severity of the disease in patients with DN. METHODS In our case-control study, we included patients who applied to the endocrinology outpatient clinic in 2019. Patients without a history of diabetes were determined as the healthy group (group 1). The patients were divided into 4 groups according to their microalbumin and creatinine levels. Venous blood samples were obtained from all patients for routine laboratory parameters and Apelin-13 levels. Homeostatic Model Assessment-Insulin Resistance (HOMA-IR) for insulin resistance was calculated using the formula: plasma glucose X insulin level/405. RESULTS Albumin was found to be significantly lower in group 5 (p = 0.032), hemoglobin A1c, microalbumin/creatinine and HOMA-IR values were found to be significantly lower in group 1 (p < 0.001 for each). Apelin-13 level was found to be significantly higher in group 4 and group 5 (p < 0.001). A negative correlation was found between Apelin-13 and GFR (r = - 0.286, p = 0.003). A positive correlation was found between Apelin-13 and HOMA-IR (r = 0.309, p = 0.009) and microalbumin/creatinine (r = 0.296, p < 0.001). CONCLUSION In patients with DN, Apelin-13 level increases with the severity of the disease and can be used as a biomarker for staging of DN.
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Affiliation(s)
- Gamze İçen
- Cukurova State Hospital Internal Medicine Department, 01000, Adana, Turkey.
| | - Gülçin Dağlıoğlu
- Faculty of Medicine, Hospital Central Laboratory, Cukurova University, 01330, Adana, Turkey
| | - Mehtap Evran
- Department of Internal Medicine, Division of Endocrinology, Cukurova University Medical Faculty, University of Cukurova, 01330, Adana, Turkey
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Targeting APLN/APJ restores blood-testis barrier and improves spermatogenesis in murine and human diabetic models. Nat Commun 2022; 13:7335. [PMID: 36443325 PMCID: PMC9705293 DOI: 10.1038/s41467-022-34990-3] [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: 09/15/2021] [Accepted: 11/14/2022] [Indexed: 11/29/2022] Open
Abstract
Type 2 diabetes mellitus is one of the most prevalent metabolic diseases presenting with systemic pathologies, including reproductive disorders in male diabetic patients. However, the molecular mechanisms that contributing to spermatogenesis dysfunction in diabetic patients have not yet been fully elucidated. Here, we perform STRT-seq to examine the transcriptome of diabetic patients' testes at single-cell resolution including all major cell types of the testis. Intriguingly, whereas spermatogenesis appears largely preserved, the gene expression profiles of Sertoli cells and the blood-testis barrier (BTB) structure are dramatically impaired. Among these deregulate pathways, the Apelin (APLN) peptide/Apelin-receptor (APJ) axis is hyper-activated in diabetic patients' testes. Mechanistically, APLN is produced locally by Sertoli cells upon high glucose treatment, which subsequently suppress the production of carnitine and repress the expression of cell adhesion genes in Sertoli cells. Together, these effects culminate in BTB structural dysfunction. Finally, using the small molecule APLN receptor antagonist, ML221, we show that blocking APLN/APJ significantly ameliorate the BTB damage and, importantly, improve functional spermatogenesis in diabetic db/db mice. We also translate and validate these findings in cultured human testes. Our findings identify the APLN/APJ axis as a promising therapeutic target to improve reproduction capacity in male diabetic patients.
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Janssens P, Decuypere JP, Bammens B, Llorens-Cortes C, Vennekens R, Mekahli D. The emerging role of the apelinergic system in kidney physiology and disease. Nephrol Dial Transplant 2022; 37:2314-2326. [PMID: 33744967 DOI: 10.1093/ndt/gfab070] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Indexed: 12/31/2022] Open
Abstract
The apelinergic system (AS) is a novel pleiotropic system with an essential role in renal and cardiovascular physiology and disease, including water homeostasis and blood pressure regulation. It consists of two highly conserved peptide ligands, apelin and apela, and a G-protein-coupled apelin receptor. The two ligands have many isoforms and a short half-life and exert both similar and divergent effects. Vasopressin, apelin and their receptors colocalize in hypothalamic regions essential for body fluid homeostasis and interact at the central and renal levels to regulate water homeostasis and diuresis in inverse directions. In addition, the AS and renin-angiotensin system interact both systemically and in the kidney, with implications for the cardiovascular system. A role for the AS in diverse pathological states, including disorders of sodium and water balance, hypertension, heart failure, pre-eclampsia, acute kidney injury, sepsis and diabetic nephropathy, has recently been reported. Furthermore, several metabolically stable apelin analogues have been developed, with potential applications in diverse diseases. We review here what is currently known about the physiological functions of the AS, focusing on renal, cardiovascular and metabolic homeostasis, and the role of the AS in associated diseases. We also describe several hurdles and research opportunities worthy of the attention of the nephrology community.
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Affiliation(s)
- Peter Janssens
- PKD Research Group, Laboratory of Pediatrics, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.,Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussell), Department of Nephrology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Jean-Paul Decuypere
- PKD Research Group, Laboratory of Pediatrics, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Bert Bammens
- Department of Nephrology, Dialysis and Renal Transplantation, University Hospitals Leuven, Leuven, Belgium.,Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Catherine Llorens-Cortes
- Laboratory of Central Neuropeptides in the Regulation of Body Fluid Homeostasis and Cardiovascular Functions, Center for Interdisciplinary Research in Biology, Collège de France, INSERM U1050, CNRS UMR 7241, Paris, France
| | - Rudi Vennekens
- Laboratory of Ion Channel Research, Department of Cellular and Molecular Medicine, VIB-KU Leuven Center for Brain and Disease, KU Leuven, Leuven, Belgium and
| | - Djalila Mekahli
- PKD Research Group, Laboratory of Pediatrics, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.,Department of Pediatric Nephrology and Organ Transplantation, University Hospitals Leuven, Leuven, Belgium
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Abstract
While most tissues exhibit their greatest growth during development, adipose tissue is capable of additional massive expansion in adults. Adipose tissue expandability is advantageous when temporarily storing fuel for use during fasting, but becomes pathological upon continuous food intake, leading to obesity and its many comorbidities. The dense vasculature of adipose tissue provides necessary oxygen and nutrients, and supports delivery of fuel to and from adipocytes under fed or fasting conditions. Moreover, the vasculature of adipose tissue comprises a major niche for multipotent progenitor cells, which give rise to new adipocytes and are necessary for tissue repair. Given the multiple, pivotal roles of the adipose tissue vasculature, impairments in angiogenic capacity may underlie obesity-associated diseases such as diabetes and cardiometabolic disease. Exciting new studies on the single-cell and single-nuclei composition of adipose tissues in mouse and humans are providing new insights into mechanisms of adipose tissue angiogenesis. Moreover, new modes of intercellular communication involving micro vesicle and exosome transfer of proteins, nucleic acids and organelles are also being recognized to play key roles. This review focuses on new insights on the cellular and signaling mechanisms underlying adipose tissue angiogenesis, and on their impact on obesity and its pathophysiological consequences.
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Vinitha R, Yogalakshmi R, Rajeswari A, Snehalatha C, Nair DR, Susairaj P, Satheesh K, Nanditha A, Raghavan A, Arun KV, Ramachandran A. Serum and salivary adipokines in type 2 diabetes - Results of a pilot study in India. Diabetes Metab Syndr 2022; 16:102536. [PMID: 35717896 DOI: 10.1016/j.dsx.2022.102536] [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] [Received: 12/03/2021] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND AIMS Association of serum and salivary adiponectin, apelin, visfatin and vaspin were studied in type 2 diabetes (T2DM) among Asian Indians. Their concentrations in periodontitis were also studied. METHODS In this cross-sectional analysis, men and women aged ≥35 years, with no history of diabetes, were screened for ≥3 risk factors for T2DM (n = 615). Eligible persons underwent a 75 gm oral glucose tolerance test and were categorized as Group A (Normal and Impaired Glucose Tolerant, n = 65) and Group B (Incident T2DM, n = 25). Screening for periodontitis was done. Saliva samples were collected in the morning. Participants refrained from food intake for about 2 hours prior to collection . Serum and saliva were stored for analysis. RESULTS Serum adiponectin was low (p = 0.006) in T2DM and correlated with its salivary levels (r = 0.46, p < 0.001). Serum apelin levels were similar, but salivary concentrations were higher (p = 0.014) in T2DM. Higher serum (p = 0.016) and salivary (p = 0.03) visfatin levels were seen in T2DM. Vaspin levels showed no significant difference in the two groups, either in blood or saliva. Serum adipokines did not differ in the presence of periodontitis. In saliva, higher vaspin (p = 0.034) and lower visfatin (p = 0.018) concentrations were observed. CONCLUSIONS The selected adipokines were measurable in saliva, in lower concentrations. Salivary adiponectin and visfatin measurements may be useful in studies on T2DM.
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Affiliation(s)
- Ramachandran Vinitha
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India.
| | - Raghuraman Yogalakshmi
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Anandhan Rajeswari
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Chamukuttan Snehalatha
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Dhruv Rajesh Nair
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Priscilla Susairaj
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Krishnamoorthy Satheesh
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Arun Nanditha
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - Arun Raghavan
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India
| | - K V Arun
- Department of Periodontics, Ragas Dental College, Chennai, Tamil Nadu, India
| | - Ambady Ramachandran
- India Diabetes Research Foundation and Dr.A. Ramachandran's Diabetes Hospitals, Chennai, India.
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15
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Luo J, Zhao Q, Li Z, Chen L. Multiple roles of apelin/APJ system in eye diseases. Peptides 2022; 152:170767. [PMID: 35181348 DOI: 10.1016/j.peptides.2022.170767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 10/19/2022]
Abstract
Apelin is an endogenous ligand of G protein-coupled receptor (APJ), and they compose apelin/APJ system. Apelin/APJ system is widely distributed in tissues and plays pleiotropic roles. Attractively, more emphasis has recently been placed on the effects of apelin/APJ system in eye diseases, such as retinopathy of prematurity (ROP), diabetic retinopathy (DR) and diabetic macular edema (DME). In this review, we elaborated the roles of apelin/APJ system in the pathophysiological processes of eye. Concretely, apelin/APJ system induces retinal gliosis and angiogenesis. Hypoxia-inducible factors (HIFs) are involved in apelin/APJ system-triggered ROP progress. Apelin/APJ system mediates DR-induced retinopathy. Apelin/APJ system maintains retinal functions and health by protecting Müller cells from apoptosis. Apelin/APJ system suppresses the NMDA-induced retinal ganglion cell (RGC) loss to protect optic nerve damage. Overall, apelin/APJ system is a potential therapeutic target for eye disease.
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Affiliation(s)
- Jingshun Luo
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China
| | - Qun Zhao
- Health Management Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhiyue Li
- Department of Orthopedics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical School, University of South China, Hengyang 421001, Hunan, China.
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16
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Jiang Y, Wang S, Liu X. Low serum apelin levels are associated with mild cognitive impairment in Type 2 diabetic patients. BMC Endocr Disord 2022; 22:137. [PMID: 35610700 PMCID: PMC9128279 DOI: 10.1186/s12902-022-01051-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 05/16/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Apelin is a new adipokine that is secreted by adipocytes, and is associated with insulin resistance (IR), inflammation, and obesity. This study was designed to investigate the role of apelin in type 2 diabetes mellitus (T2DM) patients with mild cognitive impairment (MCI). METHODS A total of 235 patients with T2DM were included. The cognitive function of patients was evaluated using Montreal Cognitive Assessment (MoCA) tool, then patients were divided into MCI group and non-MCI group according to the MoCA score. Blood sample was analyzed for the level of apelin by enzyme-linked immunosorbent assay (ELISA). RESULTS The MCI group (n = 73) presented lower serum apelin levels compared with the patients with normal cognitive function (P < 0.001). Apelin levels showed significantly negative correlation with diabetes duration, triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C, creatinine and high sensitivity C-reactive protein (hs-CRP), and positive correlation with high-density lipoprotein cholesterol (HDL-C) and brain-derived neurotrophic factor (BDNF). Multivariable logistic regression analysis indicated that serum apelin (OR = 0.304, 95%CI: 0.104-0.886, P = 0.029), as well as education levels, diabetes duration, cardiovascular disease, serum HbA1c, HDL-C, creatinine, and BDNF, were independent risk factors of MCI in patients with T2DM. CONCLUSIONS Serum apelin level is reduced in T2DM patients with MCI. Apelin might has protective effect against cognitive impairment and serve as a serum biomarker of T2DM.
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Affiliation(s)
- Yongli Jiang
- Department of Clinical Laboratory, Shanghai Pudong New Area Geriatric Hospital, Pudong New Area, Shanghai, 200135, China
| | - Shidi Wang
- Department of Clinical Laboratory, Shanghai Pudong New Area Geriatric Hospital, Pudong New Area, Shanghai, 200135, China
| | - Xinghui Liu
- Department of Clinical Laboratory, Shanghai Gongli Hospital, Second Military Medical University, Pudong New Area, Shanghai, 200135, China.
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Trivedi A, Mather O, Vega S, Hutton S, Hellawell J, Lee E. A Phase 1, Open-Label Study to Evaluate the Effect of Food and Concomitant Itraconazole Administration on the Pharmacokinetics of AMG 986 in Healthy Subjects. Clin Pharmacol Drug Dev 2022; 11:849-856. [PMID: 35247290 DOI: 10.1002/cpdd.1074] [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: 10/26/2021] [Accepted: 12/27/2021] [Indexed: 12/28/2022]
Abstract
This phase 1, open-label study evaluated the effect of food and administration of the cytochrome P450 3A4 and P-glycoprotein inhibitor itraconazole (ITZ) on the pharmacokinetics of AMG 986. In cohort 1, 12 healthy subjects received a single oral dose of AMG 986 200 mg ± food on days 1 and 10. In cohort 2, 15 healthy subjects received oral ITZ 200 mg once daily on days 8 to 15 and a single oral dose of AMG 986 10 mg on days 1 and 11. The geometric least squares mean ratios of fed/fasted for AMG 986 maximum observed concentration (Cmax ) and area under the plasma concentration-time curve from time 0 to infinity (AUCinf ) were 0.76 (90%CI, 0.61-0.95) and 1.07 (90%CI, 0.94-1.22), respectively. The geometric least squares mean ratios of AMG 986 10 mg plus ITZ 200 mg/AMG 986 10 mg alone for AMG 986 Cmax and AUCinf were 1.36 (90%CI, 1.25-1.48) and 5.13 (90%CI, 4.71-5.59), respectively. Overall, 3 subjects experienced mild treatment-related adverse events; there were no serious or fatal adverse events. In conclusion, food had no apparent effect on the exposure of AMG 986 200 mg; therefore, food restrictions are not required. Potent cytochrome P450 3A4 and/or P-glycoprotein inhibitors may warrant AMG 986 dose reduction and should be coadministered with caution in patients with heart failure treated with AMG 986.
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Affiliation(s)
| | | | | | | | | | - Edward Lee
- Amgen Inc, Thousand Oaks, California, USA
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18
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Palmer ES, Irwin N, O’Harte FPM. Potential Therapeutic Role for Apelin and Related Peptides in Diabetes: An Update. Clin Med Insights Endocrinol Diabetes 2022; 15:11795514221074679. [PMID: 35177945 PMCID: PMC8844737 DOI: 10.1177/11795514221074679] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/04/2022] [Indexed: 01/10/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is an epidemic with an ever-increasing global prevalence. Current treatment strategies, although plentiful and somewhat effective, often fail to achieve desired glycaemic goals in many people, leading ultimately to disease complications. The lack of sustained efficacy of clinically-approved drugs has led to a heightened interest in the development of novel alternative efficacious antidiabetic therapies. One potential option in this regard is the peptide apelin, an adipokine that acts as an endogenous ligand of the APJ receptor. Apelin exists in various molecular isoforms and was initially studied for its cardiovascular benefits, however recent research suggests that it also plays a key role in glycaemic control. As such, apelin peptides have been shown to improve insulin sensitivity, glucose tolerance and lower circulating blood glucose. Nevertheless, native apelin has a short biological half-life that limits its therapeutic potential. More recently, analogues of apelin, particularly apelin-13, have been developed that possess a significantly extended biological half-life. These analogues may represent a promising target for future development of therapies for metabolic disease including diabetes and obesity.
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Affiliation(s)
- Ethan S Palmer
- Ethan S Palmer, Diabetes Research Group, Ulster University, Coleraine, Northern Ireland BT52 1SA, UK.
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Sinitsky MY, Dyleva YA, Uchasova EG, Belik EV, Yuzhalin AE, Gruzdeva OV, Matveeva VG, Ponasenko AV. Adipokine gene expression in adipocytes isolated from different fat depots of coronary artery disease patients. Arch Physiol Biochem 2022; 128:261-269. [PMID: 31595792 DOI: 10.1080/13813455.2019.1674338] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
To compare DPP4, LCN2, NAMPT, ITLN1, APLN mRNA levels in adipocytes isolated from the biopsies of subcutaneous, epicardial and perivascular fat obtained from 25 patients with coronary artery disease. Gene expression signature was determined by RT-qPCR with hydrolysis probes. We found DPP4 and APLN mRNA was higher expressed only in adipocytes isolated from epicardial adipose tissue compared to the subcutaneous fat. The ITLN1 gene was overexpressed in epicardial adipose tissue compared to both subcutaneous and perivascular tissues. APLN mRNA expression was positively correlated with total and LDL cholesterol plasma level, and DPP4 mRNA expression - with VLDL cholesterol concentration. Thus, adipocytes isolated from different adipose depots are characterised by differential gene expression of adipokines. Epicardial adipose tissue is of particular interest in the context of its function, molecular and genetic mechanisms of regulation of the cardiovascular system and as a therapeutic target for correction of adipose tissue-induced effects on health.
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Affiliation(s)
- Maxim Yu Sinitsky
- Laboratory of Genome Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Yulia A Dyleva
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Evgenya G Uchasova
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Ekaterina V Belik
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Arseniy E Yuzhalin
- Laboratory of Fundamental Aspects of Atherosclerosis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Olga V Gruzdeva
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Vera G Matveeva
- Laboratory of Cell Technologies, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Anastasia V Ponasenko
- Laboratory of Genome Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
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Maternal exercise intergenerationally drives muscle-based thermogenesis via activation of apelin-AMPK signaling. EBioMedicine 2022; 76:103842. [PMID: 35081489 PMCID: PMC8790600 DOI: 10.1016/j.ebiom.2022.103842] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Sarcolipin and uncoupling protein 3 (UCP3) mediate muscle-based non-shivering thermogenesis (NST) to improve metabolic homeostasis. The impacts of maternal obesity (MO) and maternal exercise (ME) on NST in offspring muscle remain unexamined. METHODS Female mice were fed with a control diet or high fat diet to induce obesity. Then, obese mice were further separated into two groups: obesity only (OB) and OB plus daily exercise (OB/Ex). Fetal muscle was collected at embryonic day 18.5 and offspring mice at 3-month-old. Apelin administration during pregnancy and apelin receptor (APJ) knockout mouse were further used for investigating the mediatory role of APJ on muscle-based thermogenesis. To explore the direct effects of exercise on AMP-activated protein kinase (AMPK) downstream targets, AMPK knockout mouse was used. FINDINGS MO inhibited while ME activated AMPK and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α) in fetal muscle. AMPK activation increased sarcolipin expression, which inhibited the uptake of calcium ions into sarcoplasmic reticulum, thereby activating CaMKK2. Consistently, the expression of UCP3 and sarcolipin was suppressed due to MO but activated in ME fetal muscle. Importantly, changes of UCP3 and sarcolipin maintained in offspring muscle, showing the transgenerational effects. Furthermore, apelin administration during pregnancy mimicked the effects of ME on AMPK and CaMKK2 activation, and UCP3 and sarcolipin expression, underscoring the mediatory roles of apelin-AMPK signaling in improving fetal muscle development. INTERPRETATION ME, via activation of apelin signaling-AMPK axis, enhances NST gene expression in fetal and offspring muscle impaired due to MO, which intergenerationally protects offspring from diet-induced obesity and metabolic disorders. FUNDING This work was supported by National Institutes of Health Grant R01-HD067449.
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21
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Alizadeh Pahlavani H. Possible roles of exercise and apelin against pregnancy complications. Front Endocrinol (Lausanne) 2022; 13:965167. [PMID: 36093083 PMCID: PMC9452694 DOI: 10.3389/fendo.2022.965167] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/08/2022] [Indexed: 12/02/2022] Open
Abstract
The prevalence of maternal obesity during pregnancy is associated with the risk of gestational diabetes, preeclampsia, and cardiomyopathy. Environmental factors such as active lifestyles and apelin may lead to beneficial changes. In rats, apelin and exercise (45 to 65% VO2max for 6 to 9 weeks) during pregnancy increase brown adipose tissue (BAT) proteins such as Cidea, Elovl3, UCP1, PRDM16, and PGC-1α in males and females fetuses, while white adipose tissue (WAT) is reduced. In humans and animals, apelin and exercise stimulate the expression of the glucose transporters (GLUT1/2/4) in the muscle and adipose tissue through the PI3K/Akt and AMPK pathways. Hence, exercise and apelin may are known as regulators of energy metabolism and be anti-obesity and anti-diabetic properties. In mice, exercise also creates a short-term hypoxic environment in the pregnant mother, activating HIF-1, VEGF, and VEGFR, and increasing angiogenesis. Exercise and apelin also increase vasodilation, angiogenesis, and suppression of inflammation through the L-arginine/eNOS/NO pathway in humans. Exercise can stimulate the ACE2-Ang-(1-7)-Mas axis in parallel with inhibiting the ACE-Ang II-AT1 pathway. Exercise and apelin seem to prevent preeclampsia through these processes. In rats, moderate-intensity exercise (60 to 70% VO2max for 8 weeks) and apelin/APJ also may prevent pathological hypertrophy in pregnancy by activating the PI3K/Akt/mTOR/p70S6K pathway, PI3k-Akt-ERK1/2-p70S6K pathway, and the anti-inflammatory cytokine IL-10. Since pre-clinical studies have been more on animal models, future research with scientific guidelines should pay more attention to human specimens. In future research, time factors such as the first, second, and third trimesters of pregnancy and the intensity and duration of exercise are important variables that should be considered to determine the optimal intensity and duration of exercise.
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22
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Chapman FA, Nyimanu D, Maguire JJ, Davenport AP, Newby DE, Dhaun N. The therapeutic potential of apelin in kidney disease. Nat Rev Nephrol 2021; 17:840-853. [PMID: 34389827 PMCID: PMC8361827 DOI: 10.1038/s41581-021-00461-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2021] [Indexed: 02/07/2023]
Abstract
Chronic kidney disease (CKD) is a leading cause of global morbidity and mortality and is independently associated with cardiovascular disease. The mainstay of treatment for CKD is blockade of the renin-angiotensin-aldosterone system (RAAS), which reduces blood pressure and proteinuria and slows kidney function decline. Despite this treatment, many patients progress to kidney failure, which requires dialysis or kidney transplantation, and/or die as a result of cardiovascular disease. The apelin system is an endogenous physiological regulator that is emerging as a potential therapeutic target for many diseases. This system comprises the apelin receptor and its two families of endogenous ligands, apelin and elabela/toddler. Preclinical and clinical studies show that apelin receptor ligands are endothelium-dependent vasodilators and potent inotropes, and the apelin system has a reciprocal relationship with the RAAS. In preclinical studies, apelin regulates glomerular haemodynamics and acts on the tubule to promote aquaresis. In addition, apelin is protective in several kidney injury models. Although the apelin system has not yet been studied in patients with CKD, the available data suggest that apelin is a promising potential therapeutic target for kidney disease.
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Affiliation(s)
- Fiona A Chapman
- BHF/University Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh, UK
- Department of Renal Medicine, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Duuamene Nyimanu
- Division of Experimental Medicine and Immunotherapeutics, Addenbrooke's Centre for Clinical Investigation, University of Cambridge, Cambridge, UK
| | - Janet J Maguire
- Division of Experimental Medicine and Immunotherapeutics, Addenbrooke's Centre for Clinical Investigation, University of Cambridge, Cambridge, UK
| | - Anthony P Davenport
- Division of Experimental Medicine and Immunotherapeutics, Addenbrooke's Centre for Clinical Investigation, University of Cambridge, Cambridge, UK
| | - David E Newby
- BHF/University Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh, UK
| | - Neeraj Dhaun
- BHF/University Centre for Cardiovascular Science, The Queen's Medical Research Institute, Edinburgh, UK.
- Department of Renal Medicine, Royal Infirmary of Edinburgh, Edinburgh, UK.
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Novel Biomolecules in the Pathogenesis of Gestational Diabetes Mellitus. Int J Mol Sci 2021; 22:ijms222111578. [PMID: 34769010 PMCID: PMC8584125 DOI: 10.3390/ijms222111578] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/16/2021] [Accepted: 10/22/2021] [Indexed: 12/12/2022] Open
Abstract
Gestational diabetes mellitus (GDM) is one of the most common metabolic diseases in pregnant women. Its early diagnosis seems to have a significant impact on the developing fetus, the course of delivery, and the neonatal period. It may also affect the later stages of child development and subsequent complications in the mother. Therefore, the crux of the matter is to find a biopredictor capable of singling out women at risk of developing GDM as early as the very start of pregnancy. Apart from the well-known molecules with a proven and clear-cut role in the pathogenesis of GDM, e.g., adiponectin and leptin, a potential role of newer biomolecules is also emphasized. Less popular and less known factors with different mechanisms of action include: galectins, growth differentiation factor-15, chemerin, omentin-1, osteocalcin, resistin, visfatin, vaspin, irisin, apelin, fatty acid-binding protein 4 (FABP4), fibroblast growth factor 21, and lipocalin-2. The aim of this review is to present the potential and significance of these 13 less known biomolecules in the pathogenesis of GDM. It seems that high levels of FABP4, low levels of irisin, and high levels of under-carboxylated osteocalcin in the serum of pregnant women can be used as predictive markers in the diagnosis of GDM. Hopefully, future clinical trials will be able to determine which biomolecules have the most potential to predict GDM.
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Bharath LP, Rockhold JD, Conway R. Selective Autophagy in Hyperglycemia-Induced Microvascular and Macrovascular Diseases. Cells 2021; 10:cells10082114. [PMID: 34440882 PMCID: PMC8392047 DOI: 10.3390/cells10082114] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/07/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
Dysregulation of autophagy is an important underlying cause in the onset and progression of many metabolic diseases, including diabetes. Studies in animal models and humans show that impairment in the removal and the recycling of organelles, in particular, contributes to cellular damage, functional failure, and the onset of metabolic diseases. Interestingly, in certain contexts, inhibition of autophagy can be protective. While the inability to upregulate autophagy can play a critical role in the development of diseases, excessive autophagy can also be detrimental, making autophagy an intricately regulated process, the altering of which can adversely affect organismal health. Autophagy is indispensable for maintaining normal cardiac and vascular structure and function. Patients with diabetes are at a higher risk of developing and dying from vascular complications. Autophagy dysregulation is associated with the development of heart failure, many forms of cardiomyopathy, atherosclerosis, myocardial infarction, and microvascular complications in diabetic patients. Here, we review the recent findings on selective autophagy in hyperglycemia and diabetes-associated microvascular and macrovascular complications.
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Luo J, Liu W, Feng F, Chen L. Apelin/APJ system: A novel therapeutic target for locomotor system diseases. Eur J Pharmacol 2021; 906:174286. [PMID: 34174264 DOI: 10.1016/j.ejphar.2021.174286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 06/03/2021] [Accepted: 06/22/2021] [Indexed: 12/19/2022]
Abstract
Apelin is an endogenous ligand of G protein-coupled receptor APJ. Apelin/APJ system is widely expressed in abundant tissues, especially bone, joint and muscle tissue. This review focus on the effects of apelin/APJ system on locomotor system. An increasing number of evidence suggests that apelin/APJ system plays a crucial role in many physiological and pathological processes of locomotor system. Physiologically, apelin/APJ system promotes bone formation, muscle metabolism and skeletal muscle production. Pathologically, apelin/APJ system exacerbates osteoarthritis pathogenesis, whereas it alleviates osteoporosis. Besides, the level of apelin expression is regulated by different training modes, including continuous aerobic exercise, high-intensity interval training and resistance exercises. More importantly, exercise-induced apelin may be a potent pharmacological agent for the treatment of diseases and the regulation of physiological processes. Considering the pleiotropic effects of apelin on locomotor system, apelin/APJ system may be an important therapeutic target for locomotor system diseases.
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Affiliation(s)
- Jingshun Luo
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, China
| | - Wei Liu
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Fen Feng
- School of Medicine, Shaoyang University, Shaoyang, 422000, China.
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, 421001, Hunan, China.
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Castan-Laurell I, Dray C, Valet P. The therapeutic potentials of apelin in obesity-associated diseases. Mol Cell Endocrinol 2021; 529:111278. [PMID: 33838166 DOI: 10.1016/j.mce.2021.111278] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/26/2021] [Accepted: 04/02/2021] [Indexed: 01/23/2023]
Abstract
Apelin, a peptide with several active isoforms ranging from 36 to 12 amino acids and its receptor APJ, a G-protein-coupled receptor, are widely distributed. However, apelin has emerged as an adipokine more than fifteen years ago, integrating the field of inter-organs interactions. The apelin/APJ system plays important roles in several physiological functions both in rodent and humans such as fluid homeostasis, cardiovascular physiology, angiogenesis, energy metabolism. Thus the apelin/APJ system has generated great interest as a potential therapeutic target in different pathologies. The present review will consider the effects of apelin in metabolic diseases such as obesity and diabetes with a focus on diabetic cardiomyopathy among the complications associated with diabetes and APJ agonists or antagonists of interest in these diseases.
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Affiliation(s)
- I Castan-Laurell
- Restore UMR1301 Inserm, 5070 CNRS, Université Paul Sabatier, France.
| | - C Dray
- Restore UMR1301 Inserm, 5070 CNRS, Université Paul Sabatier, France
| | - P Valet
- Restore UMR1301 Inserm, 5070 CNRS, Université Paul Sabatier, France
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Abstract
Elabela, also known as Toddler or Apela, is a recently discovered hormonal peptide containing 32 amino acids. Elabela is a ligand of the apelin receptor (APJ). APJ is a G protein-coupled receptor widely expressed throughout body, and together with its cognate ligand, apelin, it plays an important role in various physiological processes including cardiovascular functions, angiogenesis and fluid homeostasis. Elabela also participates in embryonic development and pathophysiological processes in adulthood. Elabela is highly expressed in undifferentiated embryonic stem cells and regulates endoderm differentiation and cardiovascular system development. During differentiation, Elabela is highly expressed in pluripotent stem cells and in adult renal collecting ducts and loops, where it functions to maintain water and sodium homeostasis. Other studies have also shown that Elabela plays a crucial role in the pathogenesis of kidney diseases. This review addresses the role of Elabela in kidney diseases including renal ischemia/reperfusion injury, hypertensive nephropathy, diabetic nephropathy, and cardiorenal syndrome.
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Neville MDC, Kohze R, Erady C, Meena N, Hayden M, Cooper DN, Mort M, Prabakaran S. A platform for curated products from novel open reading frames prompts reinterpretation of disease variants. Genome Res 2021; 31:327-336. [PMID: 33468550 PMCID: PMC7849405 DOI: 10.1101/gr.263202.120] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 08/26/2020] [Indexed: 11/29/2022]
Abstract
Recent evidence from proteomics and deep massively parallel sequencing studies have revealed that eukaryotic genomes contain substantial numbers of as-yet-uncharacterized open reading frames (ORFs). We define these uncharacterized ORFs as novel ORFs (nORFs). nORFs in humans are mostly under 100 codons and are found in diverse regions of the genome, including in long noncoding RNAs, pseudogenes, 3' UTRs, 5' UTRs, and alternative reading frames of canonical protein coding exons. There is therefore a pressing need to evaluate the potential functional importance of these unannotated transcripts and proteins in biological pathways and human disease on a larger scale, rather than one at a time. In this study, we outline the creation of a valuable nORFs data set with experimental evidence of translation for the community, use measures of heritability and selection that reveal signals for functional importance, and show the potential implications for functional interpretation of genetic variants in nORFs. Our results indicate that some variants that were previously classified as being benign or of uncertain significance may have to be reinterpreted.
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Affiliation(s)
- Matthew D C Neville
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
| | - Robin Kohze
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
| | - Chaitanya Erady
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
| | - Narendra Meena
- Department of Biology, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Matthew Hayden
- Institute of Medical Genetics, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom
| | - David N Cooper
- Institute of Medical Genetics, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom
| | - Matthew Mort
- Institute of Medical Genetics, Cardiff University, Heath Park, Cardiff CF14 4XN, United Kingdom
| | - Sudhakaran Prabakaran
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
- Department of Biology, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
- St Edmund's College, University of Cambridge, Cambridge CB3 0BN, United Kingdom
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Abstract
Diabetes is on the rise across the globe affecting more than 463 million people and crucially increasing morbidities of diabetes-associated diseases. Urgent and immense actions are needed to improve diabetes prevention and treatment. Regarding the correlation of diabetes with many associated diseases, inhibition of the disease progression is more crucial than controlling symptoms. Currently, anti-diabetic drugs are accompanied by undesirable side-effects and target confined types of biomolecules. Thus, extensive research is demanding to identify novel disease mechanisms and molecular targets as probable candidates for effective treatment of diabetes. This review discusses the conventional molecule targets that have been applied for their therapeutic rationale in treatment of diabetes. Further, the emerging and prospective molecular targets for the future focus of library screenings are presented.
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Affiliation(s)
- Faezeh Almasi
- Pharmaceutical Biotechnology Lab, Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Fatemeh Mohammadipanah
- Pharmaceutical Biotechnology Lab, Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
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Gutaj P, Sibiak R, Jankowski M, Awdi K, Bryl R, Mozdziak P, Kempisty B, Wender-Ozegowska E. The Role of the Adipokines in the Most Common Gestational Complications. Int J Mol Sci 2020; 21:ijms21249408. [PMID: 33321877 PMCID: PMC7762997 DOI: 10.3390/ijms21249408] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/03/2020] [Accepted: 12/08/2020] [Indexed: 12/12/2022] Open
Abstract
Adipocytokines are hormonally active molecules that are believed to play a key role in the regulation of crucial biological processes in the human body. Numerous experimental studies established significant alterations in the adipokine secretion patterns throughout pregnancy. The exact etiology of various gestational complications, such as gestational diabetes, preeclampsia, and fetal growth abnormalities, needs to be fully elucidated. The discovery of adipokines raised questions about their potential contribution to the molecular pathophysiology of those diseases. Multiple studies analyzed their local mRNA expression and circulating protein levels. However, most studies report conflicting results. Several adipokines such as leptin, resistin, irisin, apelin, chemerin, and omentin were proposed as potential novel early markers of heterogeneous gestational complications. The inclusion of the adipokines in the standard predictive multifactorial models could improve their prognostic values. Nonetheless, their independent diagnostic value is mostly insufficient to be implemented into standard clinical practice. Routine assessments of adipokine levels during pregnancy are not recommended in the management of both normal and complicated pregnancies. Based on the animal models (e.g., apelin and its receptors in the rodent preeclampsia models), future implementation of adipokines and their receptors as new therapeutic targets appears promising but requires further validation in humans.
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Affiliation(s)
- Paweł Gutaj
- Department of Reproduction, Chair of Obstetrics, Gynecology, and Gynecologic Oncology, Poznań University of Medical Sciences, 60-535 Poznan, Poland; (R.S.); (E.W.-O.)
- Correspondence: ; Tel.: +61-854-65-55
| | - Rafał Sibiak
- Department of Reproduction, Chair of Obstetrics, Gynecology, and Gynecologic Oncology, Poznań University of Medical Sciences, 60-535 Poznan, Poland; (R.S.); (E.W.-O.)
- Department of Histology and Embryology, Poznań University of Medical Sciences, 60-781 Poznan, Poland;
| | - Maurycy Jankowski
- Department of Anatomy, Poznań University of Medical Sciences, 60-781 Poznan, Poland; (M.J.); (R.B.)
| | - Karina Awdi
- Student’s Scientific Society, Poznan University of Medical Sciences, 60-806 Poznan, Poland;
| | - Rut Bryl
- Department of Anatomy, Poznań University of Medical Sciences, 60-781 Poznan, Poland; (M.J.); (R.B.)
| | - Paul Mozdziak
- Physiology Graduate Program, North Carolina State University, Raleigh, NC 27695-7608, USA;
| | - Bartosz Kempisty
- Department of Histology and Embryology, Poznań University of Medical Sciences, 60-781 Poznan, Poland;
- Department of Anatomy, Poznań University of Medical Sciences, 60-781 Poznan, Poland; (M.J.); (R.B.)
- Department of Obstetrics and Gynecology, University Hospital, Masaryk University, 625 00 Brno, Czech Republic
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Toruń, 87-100 Torun, Poland
| | - Ewa Wender-Ozegowska
- Department of Reproduction, Chair of Obstetrics, Gynecology, and Gynecologic Oncology, Poznań University of Medical Sciences, 60-535 Poznan, Poland; (R.S.); (E.W.-O.)
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Tanday N, Irwin N, Moffett RC, Flatt PR, O'Harte FPM. Beneficial actions of a long-acting apelin analogue in diabetes are related to positive effects on islet cell turnover and transdifferentiation. Diabetes Obes Metab 2020; 22:2468-2478. [PMID: 32844576 DOI: 10.1111/dom.14177] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/10/2020] [Accepted: 08/23/2020] [Indexed: 12/19/2022]
Abstract
AIM The current study has tested the hypothesis that the positive effects of apelin receptor activation in diabetes are linked to benefits on islet cell apoptosis, proliferation and transdifferentiation using Ins1Cre/+ ;Rosa26-eYFP transgenic mice and induction of diabetes-like syndromes by streptozotocin (STZ) or high-fat feeding. MATERIALS AND METHODS Groups (n = 6-8) of streptozotocin (STZ)-induced diabetic and high-fat diet (HFD)-fed mice received once-daily injection (25 nmol/kg) of the long-acting acylated apelin-13 analogue, pGlu(Lys8 Glu-PAL)apelin-13 amide, for 10 or 12 days, respectively. RESULTS pGlu(Lys8 Glu-PAL)apelin-13 amide treatment partly reversed body weight loss induced by STZ and normalized circulating insulin. There was no effect of pGlu(Lys8 Glu-PAL)apelin-13 amide on these variables in HFD-fed mice, but an increase in pancreatic insulin content was observed. pGlu(Lys8 Glu-PAL)apelin-13 amide also fully, or partially, reversed the detrimental effects of STZ and HFD on plasma and pancreatic glucagon concentrations. In HFD-fed mice, the apelin analogue decreased dietary-induced elevations of islet, β- and α-cell areas, whilst reducing α-cell area in STZ-induced diabetic mice. In terms of islet cell lineage, pGlu(Lys8 Glu-PAL)apelin-13 amide effectively reduced β- to α-cell transdifferentiation and helped maintain β-cell identity, which was linked to elevated Pdx-1 expression. These islet effects were coupled with decreased β-cell apoptosis and α-cell proliferation in both models, and there was an accompanying increase of β-cell proliferation in STZ-induced diabetic mice. CONCLUSION Taken together these data demonstrate, for the first time, that pancreatic islet benefits of sustained APJ receptor activation in diabetes are linked to favourable islet cell transition events, leading to maintenance of β-cell mass.
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Affiliation(s)
- Neil Tanday
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Nigel Irwin
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - R Charlotte Moffett
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Peter R Flatt
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Finbarr P M O'Harte
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
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32
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Li C, Miao X, Wang S, Liu Y, Sun J, Liu Q, Cai L, Wang Y. Elabela may regulate SIRT3-mediated inhibition of oxidative stress through Foxo3a deacetylation preventing diabetic-induced myocardial injury. J Cell Mol Med 2020; 25:323-332. [PMID: 33244875 PMCID: PMC7810951 DOI: 10.1111/jcmm.16052] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/10/2020] [Accepted: 10/15/2020] [Indexed: 01/13/2023] Open
Abstract
Diabetic cardiomyopathy—pathophysiological heart remodelling and dysfunction that occurs in absence of coronary artery disease, hypertension and/or valvular heart disease—is a common diabetic complication. Elabela, a new peptide that acts via Apelin receptor, has similar functions as Apelin, providing beneficial effects on body fluid homeostasis, cardiovascular health and renal insufficiency, as well as potentially beneficial effects on metabolism and diabetes. In this study, Elabela treatment was found to have profound protective effects against diabetes‐induced cardiac oxidative stress, inflammation, fibrosis and apoptosis; these protective effects may depend heavily upon SIRT3‐mediated Foxo3a deacetylation. Our findings provide evidence that Elabela has cardioprotective effects for the first time in the diabetic model.
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Affiliation(s)
- Cheng Li
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Xiao Miao
- The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Shudong Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yucheng Liu
- Osteopathic Medicine Candidate, A.T. Still University School of Osteopathic Medicine in Arizona, Mesa, AZ, USA
| | - Jian Sun
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Quan Liu
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Lu Cai
- Departments of Pediatrics, Pediatric Research Institute, The University of Louisville School of Medicine, Louisville, KY, USA.,Norton Children Hospital, Louisville, KY, USA
| | - Yonggang Wang
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, Jilin, China
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Vural E, Hazar L, Karakukçu C, Arslan ME, Sirem MR, Sirakaya E, Ozsaygılı C, Çiçek A. Apelin-13: A Promising Biomarker for Age-Related Macular Degeneration? Ophthalmologica 2020; 244:102-109. [PMID: 33197910 DOI: 10.1159/000513050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/13/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE To investigate the value of serum apelin-13 levels in patients with age-related macular degeneration (AMD). METHODS Patients with dry-type AMD, patients with treatment-naïve neovascular-type AMD, and healthy controls were included in this study. Diagnoses were confirmed on detailed fundus examination, optical coherence tomography (OCT), and fundus fluorescein angiography (FFA). Central foveal thickness and subfoveal choroidal thickness were evaluated. Both serum apelin-13 and vascular endothelial growth factor (VEGF) levels were measured by a competitive enzyme-linked immunosorbent assay (ELISA) principle. RESULTS A total of 84 subjects, i.e., 24 in the dry-type AMD group (group 1), 27 in the neovascular-type AMD group (group 2), and 33 in the control group (group 3) were included in the study. Mean best-corrected visual acuity (BCVA) was 76 ± 4.5, 48.4 ± 16.3, and 83.4 ± 3.09 ETDRS letters in group 1, 2, and 3, respectively. The level of serum VEGF was 44.11 ± 26.14, 56.53 ± 53.77, and 61.47 ± 41.62 pg/mL in groups 1, 2, and 3, respectively (p = 0.553, p = 0.286, and p = 0.896, respectively). The level of serum apelin-13 was 586.47 ± 167.56, 622.18 ± 324.52, and 379.31 ± 171.96 pg/mL in groups 1, 2, and 3, respectively (p = 0.847, p = 0.04, and p ≤ 0.001, respectively). There was a negative correlation between the level of serum apelin and visual acuity (VA) and choroidal thickness. CONCLUSION Serum apelin-13 levels were higher in both dry-type and neovascular-type AMD patients than in controls. Further studies demonstrating the relationship of the level of serum apelin-13 and AMD are needed.
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Affiliation(s)
- Esra Vural
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey,
| | - Leyla Hazar
- Clinic of Ophthalmology, Kızıltepe State Hospital, Mardin, Turkey
| | - Cigdem Karakukçu
- Department of Biochemistry, Kayseri City Hospital, Kayseri, Turkey
| | - M Erkam Arslan
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey
| | - M Raşit Sirem
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey
| | - Ender Sirakaya
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey
| | - Cemal Ozsaygılı
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey
| | - Ayşe Çiçek
- Department of Ophthalmology, Kayseri City Hospital, Kayseri, Turkey
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He Q, Wang Y, Yang H, Wang J, Zhang J, Liu D. Apelin‑36 protects against lipopolysaccharide‑induced acute lung injury by inhibiting the ASK1/MAPK signaling pathway. Mol Med Rep 2020; 23:6. [PMID: 33179090 PMCID: PMC7673347 DOI: 10.3892/mmr.2020.11644] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/30/2020] [Indexed: 11/20/2022] Open
Abstract
Apelin-36 is able to mediate a range of effects on various diseases, and is upregulated in lipopolysaccharide (LPS)-induced acute lung injury (ALI). However, to the best of our knowledge, whether apelin-36 is able to regulate LPS-induced ALI has yet to be investigated. The present study aimed to investigate the role of apelin-36 in LPS-induced ALI, and the putative underlying mechanisms. Rats were assigned to one of four treatment groups: The Control group, apelin-36 group, LPS group and LPS + apelin-36 group. At 4 h after intratracheal instillation of LPS (5 mg/kg), rats were intraperitoneally treated with 10 nmol/kg apelin-36. Subsequently, pathological manifestations and the extent of inflammation and apoptosis of the lung tissues were assessed. Untransfected and apoptosis signal-regulating kinase 1 (ASK1)-overexpressing Beas-2B cells were treated with LPS in the absence or presence of apelin-36, and subsequently the levels of inflammation and apoptosis were assessed. The results obtained showed that the level of apelin-36 was increased in the bronchoalveolar lavage fluid (BALF) of LPS-treated rats. Co-treatment with apelin-36 alleviated LPS-induced lung injury and pulmonary edema, reduced the levels of pro-inflammatory cytokines, including interleukin-6, monocyte chemoattractant protein-1 and tumor necrosis factor-α, in BALF, and inhibited apoptosis in the lung tissues. The presence of apelin-36 also blocked the activation of LPS-induced ASK1, p38, c-Jun N-terminal kinase and extracellular signal-regulated kinase in lung tissues. In vitro studies performed with Beas-2B cells showed that the addition of apelin-36 led to an increase in the cell viability of LPS-induced Beas-2B cells in a concentration-dependent manner. Additionally, co-treatment with 1 µM apelin-36 prevented LPS-induced inflammation and apoptosis. However, overexpression of ASK1 significantly reversed the inhibitory effects of apelin-36 on LPS-induced inflammation and apoptosis. Taken together, the results of the present study demonstrated that apelin-36 was able to protect against LPS-induced lung injury both in vivo and in vitro, and these actions may be dependent on inhibition of the ASK1/mitogen-activated protein kinase signaling pathway.
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Affiliation(s)
- Qiong He
- Department of Critical Care Medicine, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
| | - Yuqiao Wang
- Department of Critical Care Medicine, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
| | - Hua Yang
- Department of Critical Care Medicine, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
| | - Jianmin Wang
- Department of Critical Care Medicine, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
| | - Jia Zhang
- Department of Critical Care Medicine, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
| | - Danni Liu
- Department of Cardiology, People's Hospital of Ningxia Hui Autonomous Region (Ningxia Medical University Affiliated Autonomous Region People's Hospital), Yinchuan, Ningxia 750002, P.R. China
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Guo YY, Li T, Liu H, Tang L, Li YC, Hu HT, Su YF, Lin Y, Wang YY, Li C, Huang HF, Jin L, Liu XM. Circulating levels of Elabela and Apelin in the second and third trimesters of pregnancies with gestational diabetes mellitus. Gynecol Endocrinol 2020; 36:890-894. [PMID: 32208782 DOI: 10.1080/09513590.2020.1739264] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We design this study to detect levels of Elabela (ELA) and Apelin (APLN) in women with and without gestational diabetes mellitus (GDM) in the second and third trimesters, and to identify whether there is any association between ELA, APLN, and metabolic parameters. Seventy-nine GDM and 80 control subjects in the second trimester and 87 GDM and 88 healthy subjects in the third trimester were included. In the second trimester, lower ELA levels [(14.1 versus 16.9) ng/ml, p = .025] and higher APLN levels [(1021.8 versus 923.5) pg/ml, p = .046] were observed in GDM patients compared to controls. ELA levels were positively correlated with fasting plasma glucose (FPG) (r = 0.423, p < .001) in the control group, and APLN levels were negatively correlated with triglycerides (TG) (r = -0.251, p = .025) in the control group and total cholesterol (TC) (r = -0.227, p = .044) in the GDM group. ELA appeared to be related to glucose metabolism and APLN is involved in lipid metabolism during pregnancy. The expression of ELA is significantly downregulated from the second trimester to the third trimester.
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Affiliation(s)
- Yan-Yan Guo
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Tong Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Han Liu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lin Tang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yu-Chen Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hong-Tao Hu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Department of Gynecology and Obstetrics, the First Affiliated Hospital of Nanjing Medical University/Jiangsu Province hospital, Nanjing, China
| | - Yun-Fei Su
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Lin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yin-Yu Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Cheng Li
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - He-Feng Huang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Li Jin
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xin-Mei Liu
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, China
- Institute of Embryo-Fetal Original Adult Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Vitamin D(3) regulates hepatic VEGF-A and apelin expression in experimental type 1 diabetes. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Samson F, Patrick AT, Fabunmi TE, Yahaya MF, Madu J, He W, Sripathi SR, Tyndall J, Raji H, Jee D, Gutsaeva DR, Jahng WJ. Oleic Acid, Cholesterol, and Linoleic Acid as Angiogenesis Initiators. ACS OMEGA 2020; 5:20575-20585. [PMID: 32832811 PMCID: PMC7439708 DOI: 10.1021/acsomega.0c02850] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/23/2020] [Indexed: 05/03/2023]
Abstract
The current study determined the natural angiogenic molecules using an unbiased metabolomics approach. A chick chorioallantoic membrane (CAM) model was used to examine pro- and antiangiogenic molecules, followed by gas chromatography-mass spectrometry (GCMS) analysis. Vessel formation was analyzed quantitatively using the angiogenic index (p < 0.05). At embryonic day one, a white streak or circle area was observed when vessel formation begins. GCMS analysis and database search demonstrated that angiogenesis may initiate when oleic, cholesterol, and linoleic acids increased in the area of angiogenic reactions. The gain of function study was conducted by the injection of cholesterol and oleic acid into a chick embryo to determine the role of each lipid in angiogenesis. We propose that oleic acid, cholesterol, and linoleic acid are natural molecules that set the platform for the initiation stage of angiogenesis before other proteins including the vascular endothelial growth factor, angiopoietin, angiotensin, and erythropoietin join as the angiome in sprout extension and vessel maturation.
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Affiliation(s)
| | - Ambrose Teru Patrick
- Department
of Petroleum Chemistry, American University
of Nigeria, Yola 640101, Nigeria
| | - Tosin Esther Fabunmi
- Department
of Petroleum Chemistry, American University
of Nigeria, Yola 640101, Nigeria
| | | | - Joshua Madu
- Department
of Petroleum Chemistry, American University
of Nigeria, Yola 640101, Nigeria
| | - Weilue He
- Department
of Biomedical Engineering, Michigan Technological
University, Houghton Michigan 49931, United
States
| | - Srinivas R. Sripathi
- Department
of Ophthalmology, The Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jennifer Tyndall
- Department
of Natural and Environmental Sciences, American
University of Nigeria, Yola 640101, Nigeria
| | - Hayatu Raji
- Department
of Natural and Environmental Sciences, American
University of Nigeria, Yola 640101, Nigeria
| | - Donghyun Jee
- Department
of Ophthalmology and Visual Science, St. Vincent’s Hospital,
College of Medicine, The Catholic University
of Korea, Suwon 16247, Korea
| | - Diana R. Gutsaeva
- Department
of Ophthalmology, Augusta University, Augusta, Georgia 30912, United States
| | - Wan Jin Jahng
- Department
of Petroleum Chemistry, American University
of Nigeria, Yola 640101, Nigeria
- . Phone: +234-805-550-1032
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38
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Onalan E, Doğan Y, Onalan E, Gozel N, Buran I, Donder E. Elabela levels in patients with type 2 diabetes: can it be a marker for diabetic nephropathy? Afr Health Sci 2020; 20:833-840. [PMID: 33163050 PMCID: PMC7609116 DOI: 10.4314/ahs.v20i2.37] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Elabela (ELA) is a hormone that is secreted at high levels in the kidneys of a healthy adult. This study aims to investigate whether serum ELA levels of patients with Type 2 Diabetes vary with the severity of renal damage. METHODS Our study included 50 healthy control subjects and 100 diabetic patients, who were categorized into groups based on urine albumin/creatinine ratios (ACR). Patients included in the study were assigned to four groups: Group 1 (healthy control), Group 2 (ACR<29mg/g), Group 3 (ACR=30-299 mg/g), and Group 4 (ACR>300 mg/g normal or high serum creatinine). Physical examination findings, demographic characteristics of the study group were recorded, and serum ELA levels and other laboratory parameters were assessed using appropriate methods. RESULTS The results of the study indicated that ELA levels determined in healthy individuals gradually decreased through stages of normal albuminuria, microalbuminuria, and macroalbuminuria. Moreover, ELA had a significant negative correlation with LDL-C (r=-0.201, p=0.014), glucose (r=-0.437, P<0.001), retinopathy (r=-0.222, P=0.006), serum BUN (r=-0.161, P=0.049), and a positive correlation with eGFR (r=0.250, P=0.002). CONCLUSIONS The fact that ELA levels are higher in healthy individuals compared to diabetic patients without microalbuminuria, and higher in diabetic patients without microalbuminuria compared to patients with advanced albuminuria and kidney damage, suggests that the ELA level can be an important clinical prognostic variable and even a promising agent for the treatment of diabetic nephropathy patients.
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Affiliation(s)
- Erhan Onalan
- Department of Internal Medicine, Faculty of Medicine, Firat University, 23000, Elazig, Turkey
- Corresponding author: Erhan Onalan, Assistant Professor, Firat University Medical Faculty, Internal Medicine Department, Elaziğ, Turkey. E-mail:
| | - Yusuf Doğan
- Department of Internal Medicine, Faculty of Medicine, Firat University, 23000, Elazig, Turkey
| | - Ebru Onalan
- Department of Medical Biology, Medical Faculty of Firat University, 23000, Elaziğ, Turkey
| | - Nevzat Gozel
- Department of Internal Medicine, Faculty of Medicine, Firat University, 23000, Elazig, Turkey
| | - Ilay Buran
- Department of Medical Biology, Medical Faculty of Firat University, 23000, Elaziğ, Turkey
| | - Emir Donder
- Department of Internal Medicine, Faculty of Medicine, Firat University, 23000, Elazig, Turkey
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Tune JD, Baker HE, Berwick Z, Moberly SP, Casalini ED, Noblet JN, Zhen E, Kowala MC, Christe ME, Goodwill AG. Distinct hemodynamic responses to (pyr)apelin-13 in large animal models. Am J Physiol Heart Circ Physiol 2020; 318:H747-H755. [PMID: 32108522 DOI: 10.1152/ajpheart.00365.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This study tested the hypothesis that (pyr)apelin-13 dose-dependently augments myocardial contractility and coronary blood flow, irrespective of changes in systemic hemodynamics. Acute effects of intravenous (pyr)apelin-13 administration (10 to 1,000 nM) on blood pressure, heart rate, left ventricular pressure and volume, and coronary parameters were measured in dogs and pigs. Administration of (pyr)apelin-13 did not influence blood pressure (P = 0.59), dP/dtmax (P = 0.26), or dP/dtmin (P = 0.85) in dogs. However, heart rate dose-dependently increased > 70% (P < 0.01), which was accompanied by a significant increase in coronary blood flow (P < 0.05) and reductions in left ventricular end-diastolic volume and stroke volume (P < 0.001). In contrast, (pyr)apelin-13 did not significantly affect hemodynamics, coronary blood flow, or indexes of contractile function in pigs. Furthermore, swine studies found no effect of intracoronary (pyr)apelin-13 administration on coronary blood flow (P = 0.83) or vasorelaxation in isolated, endothelium-intact (P = 0.89) or denuded (P = 0.38) coronary artery rings. Examination of all data across (pyr)apelin-13 concentrations revealed an exponential increase in cardiac output as peripheral resistance decreased across pigs and dogs (P < 0.001; R2 = 0.78). Assessment of the Frank-Starling relationship demonstrated a significant linear relationship between left ventricular end-diastolic volume and stroke volume across species (P < 0.001; R2 = 0.70). Taken together, these findings demonstrate that (pyr)apelin-13 does not directly influence myocardial contractility or coronary blood flow in either dogs or pigs.NEW & NOTEWORTHY Our findings provide much needed insight regarding the pharmacological cardiac and coronary effects of (pyr)apelin-13 in larger animal preparations. In particular, data highlight distinct hemodynamic responses of apelin across species, which are independent of any direct effect on myocardial contractility or perfusion.
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Affiliation(s)
- Johnathan D Tune
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Hana E Baker
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana.,Diabetes and Complications Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Zachary Berwick
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Steven P Moberly
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Eli D Casalini
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Jillian N Noblet
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Eugene Zhen
- Diabetes and Complications Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Mark C Kowala
- Diabetes and Complications Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Michael E Christe
- Diabetes and Complications Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Adam G Goodwill
- Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana
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40
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Adki KM, Kulkarni YA. Potential Biomarkers in Diabetic Retinopathy. Curr Diabetes Rev 2020; 16:971-983. [PMID: 32065092 DOI: 10.2174/1573399816666200217092022] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/28/2019] [Accepted: 01/09/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Diabetic retinopathy is one of the important complications of diabetes. In major cases, diabetic retinopathy is unnoticed until the irreversible damage to eye occurs and leads to blurred vision and, eventually, blindness. OBJECTIVE The pathogenesis and diagnosis of diabetic retinopathy are very complex and not fully understood. Currently, well-established laser techniques and medications are available, but these treatment options have their own shortcomings on biological systems. Biomarkers can help to overcome this problem due to easy, fast and economical options for diagnosis of diabetic retinopathy. METHODS The search terms used were "Diabetic retinopathy", "Biomarkers in diabetic retinopathy", "Novel biomarkers in diabetic retinopathy" and "Potential biomarkers of diabetic retinopathy" by using different scientific resources and databases like EBSCO, ProQuest, PubMed and Scopus. Eligibility criteria included biomarkers involved in diabetic retinopathy in the detectable range. Exclusion criteria included the repetition and duplication of the biomarker in diabetic retinopathy. RESULTS Current review and literature study revealed that biomarkers of diabetic retinopathy can be categorized as inflammatory: tumor necrosis factor-α, monocyte chemoattractant protein-1, transforming growth factor- β; antioxidant: nicotinamide adenine dinucleotide phosphate oxidase; nucleic acid: poly ADP ribose polymerase- α, Apelin, Oncofetal; enzyme: ceruloplasmin, protein kinase C; and miscellaneous: erythropoietin. These biomarkers have a great potential in the progression of diabetic retinopathy hence can be used in the diagnosis and management of this debilitating disease. CONCLUSION Above mentioned biomarkers play a key role in the pathogenesis of diabetic retinopathy; hence they can also be considered as potential targets for new drug development.
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Affiliation(s)
- Kaveri M Adki
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS, V.L. Mehta Road, Vile Parle (West), Mumbai-400056, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM'S NMIMS, V.L. Mehta Road, Vile Parle (West), Mumbai-400056, India
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41
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Cui L, Zhang JY, Ren ZP, Zhao HJ, Li GS. APLNR promotes the progression of osteosarcoma by stimulating cell proliferation and invasion. Anticancer Drugs 2019; 30:940-947. [PMID: 30920988 DOI: 10.1097/cad.0000000000000785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Osteosarcoma is the most common type of bone malignancies with a poor prognosis. In recent years, targeted therapy has shown great potential in the treatment of osteosarcoma, and more effective therapeutic targets for this disease need to be developed. APLNR is a seven transmembrane G-protein-coupled receptor expressed widely in multiple tissues. As has been reported, APLNR is involved in various physiological and pathological processes. Although APLNR plays a role in the development and progression of multiple tumors, the potential role of APLNR in osteosarcoma, a highly malignant tumor, remains unclear. Here, we reported that APLNR expression was correlated positively with clinical features including tumor size and stage of osteosarcoma. We found that APLNR knockdown inhibited the proliferation and invasion of osteosarcoma cells in vitro. In addition, APLNR could promote the progression and metastasis of osteosarcoma in mice. Collectively, this study showed the potential link between APLNR and osteosarcoma and suggested APLNR as a novel therapeutic target for osteosarcoma.
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Affiliation(s)
- Lei Cui
- Departments of Ophthalmology Surgery
| | | | | | - He-Jun Zhao
- Department of Endocrinology, Tianjin First Center Hospital, Tianjin, China
| | - Gui-Shi Li
- Joint Orthopaedics, Yantai Yuhuangding Hospital, Yantai, Shandong Province
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Read C, Nyimanu D, Williams TL, Huggins DJ, Sulentic P, Macrae RGC, Yang P, Glen RC, Maguire JJ, Davenport AP. International Union of Basic and Clinical Pharmacology. CVII. Structure and Pharmacology of the Apelin Receptor with a Recommendation that Elabela/Toddler Is a Second Endogenous Peptide Ligand. Pharmacol Rev 2019; 71:467-502. [PMID: 31492821 PMCID: PMC6731456 DOI: 10.1124/pr.119.017533] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The predicted protein encoded by the APJ gene discovered in 1993 was originally classified as a class A G protein-coupled orphan receptor but was subsequently paired with a novel peptide ligand, apelin-36 in 1998. Substantial research identified a family of shorter peptides activating the apelin receptor, including apelin-17, apelin-13, and [Pyr1]apelin-13, with the latter peptide predominating in human plasma and cardiovascular system. A range of pharmacological tools have been developed, including radiolabeled ligands, analogs with improved plasma stability, peptides, and small molecules including biased agonists and antagonists, leading to the recommendation that the APJ gene be renamed APLNR and encode the apelin receptor protein. Recently, a second endogenous ligand has been identified and called Elabela/Toddler, a 54-amino acid peptide originally identified in the genomes of fish and humans but misclassified as noncoding. This precursor is also able to be cleaved to shorter sequences (32, 21, and 11 amino acids), and all are able to activate the apelin receptor and are blocked by apelin receptor antagonists. This review summarizes the pharmacology of these ligands and the apelin receptor, highlights the emerging physiologic and pathophysiological roles in a number of diseases, and recommends that Elabela/Toddler is a second endogenous peptide ligand of the apelin receptor protein.
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Affiliation(s)
- Cai Read
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Duuamene Nyimanu
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Thomas L Williams
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - David J Huggins
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Petra Sulentic
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Robyn G C Macrae
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Peiran Yang
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Robert C Glen
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Janet J Maguire
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
| | - Anthony P Davenport
- Experimental Medicine and Immunotherapeutics, University of Cambridge, Centre for Clinical Investigation, Addenbrooke's Hospital, Cambridge, United Kingdom (C.R., D.N., T.L.W., D.J.H., P.S., R.G.C.M., P.Y., J.J.M., A.P.D.); The Centre for Molecular Informatics, Department of Chemistry, University of Cambridge, Cambridge, United Kingdom (D.J.H., R.C.G.); and Computational and Systems Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom (R.C.G.)
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Apelin promotes hepatic fibrosis through ERK signaling in LX-2 cells. Mol Cell Biochem 2019; 460:205-215. [PMID: 31270645 PMCID: PMC6745032 DOI: 10.1007/s11010-019-03581-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/27/2019] [Indexed: 02/08/2023]
Abstract
Apelin participates in cardiovascular functions, metabolic disease, and homeostasis disorder. However, the biological function of apelin in liver diseases, especially liver fibrosis is still under investigation. The present study aimed to investigate the expression of apelin in nonalcoholic fatty liver disease (NAFLD) and the mechanism of apelin promoting hepatic fibrosis through ERK signaling in hepatic stellate LX-2 cells. The results showed that the ALT and AST levels in serum were increased in the mice fed HFC. The histological staining revealed that hepatocellular steatosis and ballooning degeneration was severe, and fibrogenesis appeared as increased pericellular collagen deposition along with pericentral (lobular) collagen deposition in the mice fed HFC. Immunochemistry and qRT-PCR results showed that the expression of apelin and profibrotic genes was higher as compared to the control group. The in vitro experiments demonstrated that apelin-13 upregulated the transcription and translation levels of collagen type I (collagen-I) and α-smooth muscle actin (α-SMA) in LX-2 cells. The immunofluorescent staining, qRT-PCR, and Western blot results showed that the overexpression of apelin markedly increased the expression of α-SMA and cyclinD1. The LX-2 cells treated with apelin-13 displayed an increased expression of pERK1/2 in a time-dependent manner, while the pretreatment with PD98059 abolished the apelin-induced expression of α-SMA and cyclinD1. Furthermore, the in vivo and in vitro assays suggested a key role of apelin in promoting liver fibrosis, and the underlying mechanism might be ascribed to the apelin expression of profibrotic genes via ERK signaling pathway.
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Huang R, Zhu J, Zhang L, Hua X, Ye W, Chen C, Sun K, Wang W, Feng L, Zhang J. Is ELABELA a reliable biomarker for hypertensive disorders of pregnancy? Pregnancy Hypertens 2019; 17:226-232. [PMID: 31487645 PMCID: PMC7001771 DOI: 10.1016/j.preghy.2019.06.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/26/2019] [Accepted: 06/25/2019] [Indexed: 11/15/2022]
Abstract
OBJECTIVE We aimed to examine the ELABELA levels at different stages of pregnancy among normotensive controls and women with hypertensive disorders of pregnancy (HDP). STUDY DESIGN A total of 336 blood samples of 169 women were collected from pre-pregnancy, the first, second, and third trimesters. Women were divided into the following six groups: 1) non-pregnant healthy women; 2) healthy pregnant controls; 3) chronic hypertension; 4) gestational hypertension; 5) preeclampsia; and 6) preeclampsia superimposed on chronic hypertension. ELABELA plasma concentrations were measured by human ELA Elisa Kit (Peninsula Laboratories International, Inc. USA). Kruskal-Wallis test was used to test whether ELABELA level in each type of HDP differed from that in gestational week-matched normotensive controls. MAIN OUTCOME MEASURES Hypertensive disorders of pregnancy. RESULTS In the first trimester, patients with gestational hypertension had higher ELABELA level than gestational week-matched normotensive controls [median (ng/ml): 31.9, (IQR (ng/ml): 16.3, 47.6) vs. 19.7 (13.7, 23.2), p = 0.03]. In the second trimester, the levels were 49.2 (32.2, 69.1) vs 24.0 (13.0, 32.6) (p = 0.002), respectively. The level for gestational hypertensive women in the third trimester did not differ significantly from that of normotensive women [43.8 (30.8, 62.7) vs 25.0 (12.3, 74.0), p = 0.82]. The ELABELA levels were similar between preeclamptic women and normotensive controls throughout pregnancy. CONCLUSIONS Maternal blood ELABELA levels in the first and second trimesters were elevated in women who developed gestational hypertension late in pregnancy, but the ELABELA level bears no significant relationship with preeclampsia during any stage of pregnancy.
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Affiliation(s)
- Rong Huang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China
| | - Jing Zhu
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China; Department of Obstetrics and Gynecology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lin Zhang
- Department of Obstetrics and Gynecology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaolin Hua
- Department of Obstetrics and Gynecology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiping Ye
- Department of Obstetrics and Gynecology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chang Chen
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China; School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Weiye Wang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China
| | - Liping Feng
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China; Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC 27710, USA.
| | - Jun Zhang
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China; School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Aykan MB, Tasci I. Interpretation of blood apelin level across different clinical pictures of diabetes mellitus. Diabetes Res Clin Pract 2019; 152:183-184. [PMID: 30802479 DOI: 10.1016/j.diabres.2019.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 02/08/2019] [Indexed: 11/19/2022]
Affiliation(s)
- Musa Baris Aykan
- Turkish Ministry of Health, Bahce Physical Therapy and Rehabilitation Hospital, Adana, Turkey
| | - Ilker Tasci
- University of Health Sciences, Gulhane Faculty of Medicine, Department of Internal Medicine, Ankara, Turkey; Turkish Ministry of Health, Gulhane Teaching and Research Hospital, Department of Internal Medicine, Ankara, Turkey.
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He S, Li J, Wang J, Zhang Y. Hypoxia exposure alleviates impaired muscular metabolism, glucose tolerance, and aerobic capacity in apelin-knockout mice. FEBS Open Bio 2019; 9:498-509. [PMID: 30868058 PMCID: PMC6396165 DOI: 10.1002/2211-5463.12587] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/13/2018] [Accepted: 12/21/2018] [Indexed: 12/12/2022] Open
Abstract
High altitude hypoxia adaptation can improve glucose tolerance in people with metabolic syndrome and type 2 diabetes (T2D). Apelin is an endogenous ligand of the G protein-coupled receptor APJ and has possible roles in energy metabolism. Apelin-null mice have been reported to exhibit impaired insulin sensitivity, which can be reversed by supplementation of exogenous apelin. Here, we examined the effects of 4 weeks' intermittent hypoxia exposure on physiological and biochemical variables in apelin knockout (KO) mice. Apelin KO mice exhibited decreased expression of substrate metabolism-associated genes/proteins, impaired glucose tolerance, and reduced exercise capacity compared to wild-type mice, and all of these effects were rescued by hypoxia. These findings suggest that hypoxia intervention may possibly be able to alleviate metabolic conditions caused by genetic defects.
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Affiliation(s)
- Shiyi He
- School of Sport ScienceBeijing Sport UniversityChina
| | - Junping Li
- School of Sport ScienceBeijing Sport UniversityChina
| | - Jianxiong Wang
- Faculty of Health, Engineering and SciencesUniversity of Southern QueenslandToowoombaAustralia
| | - Ying Zhang
- School of Sport ScienceBeijing Sport UniversityChina
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Huang Z, Luo X, Liu M, Chen L. Function and regulation of apelin/APJ system in digestive physiology and pathology. J Cell Physiol 2018; 234:7796-7810. [PMID: 30390294 DOI: 10.1002/jcp.27720] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/16/2018] [Indexed: 12/11/2022]
Abstract
Apelin is an endogenous ligand of seven-transmembrane G-protein-coupled receptor APJ. Apelin and APJ are distributed in various tissues, including the heart, lung, liver, kidney, and gastrointestinal tract and even in tumor tissues. Studies show that apelin messenger RNA is widely expressed in gastrointestinal (GI) tissues, including stomach and small intestine, which is closely correlated with GI function. Thus, the apelin/APJ system may exert a broad range of activities in the digestive system. In this paper, we review the role of the apelin/APJ system in the digestive system in physiological conditions, such as gastric acid secretion, control of appetite and food intake, cell proliferation, cholecystokinin secretion and histamine release, gut-brain axis, GI motility, and others. In pathological conditions, the apelin/APJ system plays an important role in the healing process of stress gastric injury, the clinical features and prognosis of patients with gastric cancers, the reduction of inflammatory response to enteritis and pancreatitis, the mediation of liver fibrogenesis, the promotion of liver damage, the inhibition of liver regeneration, the contribution of splanchnic neovascularization in portal hypertension, the treatment of colon cancer, and GI oxidative damage. Overall, the apelin/APJ system plays diversified functions and regulatory roles in digestive physiology and pathology. Further exploration of the relationship between the apelin/APJ system and the digestive system will help to find new and effective drugs for treating and alleviating the pain of digestive diseases.
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Affiliation(s)
- Zhen Huang
- Institute of Pharmacy and Pharmacology, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China.,Department of Pharmacy, The First Affiliated Hospital, University of South China, Hengyang, China
| | - Xuling Luo
- Institute of Pharmacy and Pharmacology, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Meiqing Liu
- Institute of Pharmacy and Pharmacology, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
| | - Linxi Chen
- Institute of Pharmacy and Pharmacology, Learning Key Laboratory for Pharmacoproteomics, University of South China, Hengyang, China
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Apelin/APJ system: A novel promising target for anti-aging intervention. Clin Chim Acta 2018; 487:233-240. [PMID: 30296443 DOI: 10.1016/j.cca.2018.10.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 12/16/2022]
Abstract
Apelin, an endogenous ligand for the G protein-coupled receptor APJ, is widely expressed in various organs. Recent research has indicated that the Apelin/APJ system plays an important role in aging. Apelin and APJ receptor expression are down-regulated with increasing age. In murine models, Apelin and APJ knockouts exhibit accelerated senescence whereas Apelin-restoration results in enhanced vigor and rejuvenated behavioral and circadian phenotypes. Furthermore, aged Apelin knockout mice develop progressive impairment of cardiac contractility associated with systolic dysfunction. Apelin is crucial to maintain cardiac contractility in aging. Moreover, the Apelin/APJ system appears to be involved in regulation of renin-angiotensin-aldosterone system (RAAS), apoptosis, inflammation and oxidative stress which promotes aging. Likewise, the Apelin/APJ system regulates autophagy, stem cells and the sirtuin family thus contributing to anti-aging. In this review, we describe the relationship between Apelin/APJ system and aging. We elaborate on the role of the Apelin/APJ system in aging stimulators, aging inhibitors and age-related diseases such as obesity, diabetes and cardiovascular disease. We conclude that Apelin/APJ system might become a novel promising therapeutic target for anti-aging.
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O’Harte FPM, Parthsarathy V, Hogg C, Flatt PR. Long-term treatment with acylated analogues of apelin-13 amide ameliorates diabetes and improves lipid profile of high-fat fed mice. PLoS One 2018; 13:e0202350. [PMID: 30157220 PMCID: PMC6114795 DOI: 10.1371/journal.pone.0202350] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 08/01/2018] [Indexed: 01/22/2023] Open
Abstract
Previous studies have shown that modified apelin analogues exhibited enzyme resistance in plasma and improved circulating half-life compared to apelin-13. This study investigated the antidiabetic effects of chronic administration of stable long acting fatty acid modified apelin analogues, namely, (Lys8GluPAL)apelin-13 amide and pGlu(Lys8GluPAL)apelin-13 amide, in high-fat fed obese-diabetic mice. Male NIH Swiss mice (groups n = 8) were maintained either on a high-fat diet (45% fat) from 8 to 28 weeks old, or control mice were fed a normal diet (10% fat). When diet induced obesity-diabetes was established after high-fat feeding, mice were injected i.p. once daily with apelin analogues, liraglutide (25 nmol/kg) or saline (controls). Administration of (Lys8GluPAL)apelin-13 amide and pGlu(Lys8GluPAL)apelin-13 amide for 28 days significantly reduced food intake and decreased body weight. Non-fasting glucose was reduced (p<0.01 to p<0.001) and plasma insulin concentrations increased (p<0.01 to p<0.001). This was accompanied by enhanced insulin responses (p<0.01 to p<0.001) and significant reductions in glucose excursion after oral (p<0.01) or i.p. (p<0.01) glucose challenges and feeding. Apelin analogues also significantly improved HbA1c (p<0.01), enhanced insulin sensitivity (p<0.01), reduced triglycerides (p<0.001), increased HDL-cholesterol (p<0.01) and decreased LDL-cholesterol (p<0.01), compared to high-fat fed saline treated control mice. Cholesterol levels were decreased (p<0.01) by pGlu(Lys8GluPAL)apelin-13 amide and both apelin treated groups showed improved bone mineral content, reduced fat deposits and increased plasma GLP-1. Daily treatment with liraglutide mirrored many of these changes (not on bone or adipose tissue), but unlike apelin analogues increased plasma amylase. Consumption of O2, production of CO2, respiratory exchange ratio and energy expenditure were improved by apelin analogues. These results indicate that long-term treatment with acylated analogues (Lys8GluPAL)apelin-13 amide and particularly pGlu(Lys8GluPAL)apelin-13 amide resulted in similar or enhanced therapeutic responses to liraglutide in high-fat fed mice. Fatty acid derived apelin analogues represent a new and exciting development in the treatment of obesity-diabetes.
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Affiliation(s)
- Finbarr P. M. O’Harte
- School of Biomedical Sciences, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - Vadivel Parthsarathy
- School of Biomedical Sciences, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - Christopher Hogg
- School of Biomedical Sciences, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
| | - Peter R. Flatt
- School of Biomedical Sciences, SAAD Centre for Pharmacy and Diabetes, Ulster University, Coleraine, Co. Londonderry, Northern Ireland, United Kingdom
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Apelin: A potential novel serum biomarker for early detection of diabetic nephropathy in patients with type 2 diabetes. North Clin Istanb 2018; 6:151-155. [PMID: 31297482 PMCID: PMC6593907 DOI: 10.14744/nci.2018.62134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 02/19/2018] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE: Diabetic nephropathy (DN) is the major cause of chronic renal failure, and proteinuria is an independent risk factor for the end stage renal disease. The random urine protein: creatinine ratio (P:C ratio) can accurately predict the amount of 24-hour urinary protein excretion. Apelin is thought to be associated with endothelial dysfunction, angiogenesis, and inflammation. This study investigated the apelin concentration and its association with the urine P:C ratio, and metabolic parameters in subjects with and without type 2 diabetes mellitus (T2D). METHODS: This study involved 86 subjects: 56 with newly diagnosed and untreated T2D and 30 non-diabetic controls. All subjects underwent a complete clinical examination that included anthropometric and laboratory measurements. RESULTS: Twenty-four males and sixty-two females participated in this study, and their mean age was 52.27±11.34 years. There were no differences in age, thyrotropin-stimulating hormone (TSH), creatinine clearance, and apelin levels between groups. As expected, fasting plasma glucose, weight, body mass index, and HbA1C were higher in T2D subjects (p=0.001, p=0.02, p=0.03, and p=0.001, respectively). Although apelin levels were higher in the control group, the differences were not statistically significant (p=0.93). The P:C ratio levels were lower in the control group, and the differences were statistically significant (p=0.006). A Spearman correlation analysis revealed that serum apelin levels were not correlated with the urine P:C ratio. CONCLUSION: Our study demonstrates that T2D is associated with decreased serum apelin levels and increased urine P:C ratios compared to those in non-diabetic subjects. This association may depend on impaired glucose homeostasis. Our results show that the serum apelin levels were not correlated with the urine protein: creatinine ratio and provide further evidence regarding the relationship between apelin and DN.
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