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Mir FA, Abdesselem HB, Cyprian F, Iskandarani A, Doudin A, Samra TA, Alkasem M, Abdalhakam I, Taheri S, Abou-Samra AB. Inflammatory protein signatures in individuals with obesity and metabolic syndrome. Sci Rep 2023; 13:22185. [PMID: 38092892 PMCID: PMC10719383 DOI: 10.1038/s41598-023-49643-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023] Open
Abstract
There is variability in the metabolic health status among individuals presenting with obesity; some may be metabolically healthy, while others may have developed the metabolic syndrome, a cluster including insulin resistance, hypertension, dyslipidemia, and increased risk of cardiovascular disease and type 2 diabetes. The mechanisms contributing to this metabolic heterogeneity are not fully understood. To address this question, plasma samples from 48 individuals with BMI ≥ 35 kg/m2 were examined (27 with and 21 without metabolic syndrome). Fasting plasma samples were subjected to Olink proteomics analysis for 184 cardiometabolic and inflammation-enriched proteins. Data analysis showed a clear differentiation between the two groups with distinct plasma protein expression profiles. Twenty-four proteins were differentially expressed (DEPs) between the two groups. Pathways related to immune cell migration, leukocyte chemotaxis, chemokine signaling, mucosal inflammatory response, tissue repair and remodeling were enriched in the group with metabolic syndrome. Functional analysis of DEPs revealed upregulation of 15 immunological pathways. The study identifies some of the pathways that are altered and reflect metabolic health in individuals with obesity. This provides valuable insights into some of the underlying mechanisms and can lead to identification of therapeutic targets to improve metabolic health in individuals with obesity.
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Affiliation(s)
- Fayaz Ahmad Mir
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar.
| | - Houari B Abdesselem
- Proteomics Core Facility, Office of the Vice President for Research (OVPR), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
- College of Health and Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
| | - Farhan Cyprian
- College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Asmma Doudin
- Laboratory of Immunoregulation, Research Department, Sidra Medicine, Doha, Qatar
| | - Tareq A Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Ibrahem Abdalhakam
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Shahrad Taheri
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
- National Obesity Treatment Center, Hamad Medical Corporation, Doha, Qatar
- Weil Cornell Medicine -Qatar, Doha, Qatar
| | - Abdul-Badi Abou-Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
- National Obesity Treatment Center, Hamad Medical Corporation, Doha, Qatar
- Weil Cornell Medicine -Qatar, Doha, Qatar
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Mir FA, Mall R, Ullah E, Iskandarani A, Cyprian F, Samra TA, Alkasem M, Abdalhakam I, Farooq F, Taheri S, Abou-Samra AB. An integrated multi-omic approach demonstrates distinct molecular signatures between human obesity with and without metabolic complications: a case-control study. J Transl Med 2023; 21:229. [PMID: 36991398 PMCID: PMC10053148 DOI: 10.1186/s12967-023-04074-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/22/2023] [Indexed: 03/31/2023] Open
Abstract
OBJECTIVES To examine the hypothesis that obesity complicated by the metabolic syndrome, compared to uncomplicated obesity, has distinct molecular signatures and metabolic pathways. METHODS We analyzed a cohort of 39 participants with obesity that included 21 with metabolic syndrome, age-matched to 18 without metabolic complications. We measured in whole blood samples 754 human microRNAs (miRNAs), 704 metabolites using unbiased mass spectrometry metabolomics, and 25,682 transcripts, which include both protein coding genes (PCGs) as well as non-coding transcripts. We then identified differentially expressed miRNAs, PCGs, and metabolites and integrated them using databases such as mirDIP (mapping between miRNA-PCG network), Human Metabolome Database (mapping between metabolite-PCG network) and tools like MetaboAnalyst (mapping between metabolite-metabolic pathway network) to determine dysregulated metabolic pathways in obesity with metabolic complications. RESULTS We identified 8 significantly enriched metabolic pathways comprising 8 metabolites, 25 protein coding genes and 9 microRNAs which are each differentially expressed between the subjects with obesity and those with obesity and metabolic syndrome. By performing unsupervised hierarchical clustering on the enrichment matrix of the 8 metabolic pathways, we could approximately segregate the uncomplicated obesity strata from that of obesity with metabolic syndrome. CONCLUSIONS The data suggest that at least 8 metabolic pathways, along with their various dysregulated elements, identified via our integrative bioinformatics pipeline, can potentially differentiate those with obesity from those with obesity and metabolic complications.
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Affiliation(s)
- Fayaz Ahmad Mir
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar.
| | - Raghvendra Mall
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, USA.
- Biotechnology Research Center, Technology Innovation Institute, P.O. Box 9639, Abu Dhabi, United Arab Emirates.
| | - Ehsan Ullah
- Qatar Computational Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar.
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Farhan Cyprian
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Tareq A Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Ibrahem Abdalhakam
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
| | - Faisal Farooq
- Qatar Computational Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
| | - Shahrad Taheri
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
- National Obesity Treatment Center, Hamad Medical Corporation, Doha, Qatar
- Weil Cornell Medicine - Qatar, Doha, Qatar
| | - Abdul-Badi Abou-Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, PO Box 3050, Doha, Qatar
- National Obesity Treatment Center, Hamad Medical Corporation, Doha, Qatar
- Weil Cornell Medicine - Qatar, Doha, Qatar
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Mir FA, Ullah E, Mall R, Iskandarani A, Samra TA, Cyprian F, Parray A, Alkasem M, Abdalhakam I, Farooq F, Abou-Samra AB. Dysregulated Metabolic Pathways in Subjects with Obesity and Metabolic Syndrome. Int J Mol Sci 2022; 23:ijms23179821. [PMID: 36077214 PMCID: PMC9456113 DOI: 10.3390/ijms23179821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 11/24/2022] Open
Abstract
Background: Obesity coexists with variable features of metabolic syndrome, which is associated with dysregulated metabolic pathways. We assessed potential associations between serum metabolites and features of metabolic syndrome in Arabic subjects with obesity. Methods: We analyzed a dataset of 39 subjects with obesity only (OBO, n = 18) age-matched to subjects with obesity and metabolic syndrome (OBM, n = 21). We measured 1069 serum metabolites and correlated them to clinical features. Results: A total of 83 metabolites, mostly lipids, were significantly different (p < 0.05) between the two groups. Among lipids, 22 sphingomyelins were decreased in OBM compared to OBO. Among non-lipids, quinolinate, kynurenine, and tryptophan were also decreased in OBM compared to OBO. Sphingomyelin is negatively correlated with glucose, HbA1C, insulin, and triglycerides but positively correlated with HDL, LDL, and cholesterol. Differentially enriched pathways include lysine degradation, amino sugar and nucleotide sugar metabolism, arginine and proline metabolism, fructose and mannose metabolism, and galactose metabolism. Conclusions: Metabolites and pathways associated with chronic inflammation are differentially expressed in subjects with obesity and metabolic syndrome compared to subjects with obesity but without the clinical features of metabolic syndrome.
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Affiliation(s)
- Fayaz Ahmad Mir
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Correspondence: (F.A.M.); (E.U.)
| | - Ehsan Ullah
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
- Correspondence: (F.A.M.); (E.U.)
| | - Raghvendra Mall
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38104, USA
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Tareq A. Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Farhan Cyprian
- College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Aijaz Parray
- Qatar Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ibrahem Abdalhakam
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Faisal Farooq
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
| | - Abdul-Badi Abou-Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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Mir FA, Mall R, Iskandarani A, Ullah E, Samra TA, Cyprian F, Parray A, Alkasem M, Abdalhakam I, Farooq F, Abou-Samra AB. Characteristic MicroRNAs Linked to Dysregulated Metabolic Pathways in Qatari Adult Subjects With Obesity and Metabolic Syndrome. Front Endocrinol (Lausanne) 2022; 13:937089. [PMID: 35937842 PMCID: PMC9352892 DOI: 10.3389/fendo.2022.937089] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/24/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Obesity-associated dysglycemia is associated with metabolic disorders. MicroRNAs (miRNAs) are known regulators of metabolic homeostasis. We aimed to assess the relationship of circulating miRNAs with clinical features in obese Qatari individuals. METHODS We analyzed a dataset of 39 age-matched patients that includes 18 subjects with obesity only (OBO) and 21 subjects with obesity and metabolic syndrome (OBM). We measured 754 well-characterized human microRNAs (miRNAs) and identified differentially expressed miRNAs along with their significant associations with clinical markers in these patients. RESULTS A total of 64 miRNAs were differentially expressed between metabolically healthy obese (OBO) versus metabolically unhealthy obese (OBM) patients. Thirteen out of 64 miRNAs significantly correlated with at least one clinical trait of the metabolic syndrome. Six out of the thirteen demonstrated significant association with HbA1c levels; miR-331-3p, miR-452-3p, and miR-485-5p were over-expressed, whereas miR-153-3p, miR-182-5p, and miR-433-3p were under-expressed in the OBM patients with elevated HbA1c levels. We also identified, miR-106b-3p, miR-652-3p, and miR-93-5p that showed a significant association with creatinine; miR-130b-5p, miR-363-3p, and miR-636 were significantly associated with cholesterol, whereas miR-130a-3p was significantly associated with LDL. Additionally, miR-652-3p's differential expression correlated significantly with HDL and creatinine. CONCLUSIONS MicroRNAs associated with metabolic syndrome in obese subjects may have a pathophysiologic role and can serve as markers for obese individuals predisposed to various metabolic diseases like diabetes.
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Affiliation(s)
- Fayaz Ahmad Mir
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Raghvendra Mall
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ehsan Ullah
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
| | - Tareq A Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Farhan Cyprian
- College of Medicine, Qatar University (QU) Health, Qatar University, Doha, Qatar
| | - Aijaz Parray
- Qatar Neuroscience Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ibrahem Abdalhakam
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Faisal Farooq
- Qatar Computing Research Institute (QCRI), Hamad Bin Khalifa University, Doha, Qatar
| | - Abdul-Badi Abou-Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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Bettahi I, Krishnankutty R, Jaganjac M, Suleiman NNM, Ramanjaneya M, Jerobin J, Hassoun S, Alkasem M, Abdelhakam I, Iskandarani A, Samra TA, Mohamed-Ali V, Abou-Samra AB. Differences in protein expression, at the basal state and at 2 h of insulin infusion, in muscle biopsies from healthy Arab men with high or low insulin sensitivity measured by hyperinsulinemic euglycemic clamp. Front Endocrinol (Lausanne) 2022; 13:1024832. [PMID: 36876056 PMCID: PMC9982120 DOI: 10.3389/fendo.2022.1024832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/14/2022] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Skeletal muscle is the main site for insulin-dependent glucose disposal. The hyperinsulinemic euglycemic clamp (HIEC) is the gold standard for the assessment of insulin sensitivity (IS). We have previously shown that insulin sensitivity, measured by HIEC, varied widely among a group of 60 young healthy men with normoglycemia. The aim of this study was to correlate the proteomic profile of skeletal muscles to insulin sensitivity. METHODS Muscle biopsies from 16 subjects having the highest (M ≥ 13; n = 8, HIS) and lowest (M ¾ 6, n = 8, LIS) IS were obtained at baseline and during insulin infusion after stabilization of the blood glucose level and glucose infusion rate at the end of the HIEC. The samples were processed using a quantitative proteomic analysis approach. RESULTS At baseline, 924 proteins were identified in the HIS and LIS groups. Among the 924 proteins detected in both groups, three were suppressed and three were increased significantly in the LIS subjects compared with the HIS subjects. Following insulin infusion, 835 proteins were detected in both groups. Among the 835 proteins, two showed differential responsiveness to insulin; ATP5F1 protein was decreased, and MYLK2 was higher in the LIS group compared with that in the HIS group. Our data suggest that alteration in mitochondrial proteins and an increased number of proteins involved in fast-twitch fiber correlate to insulin sensitivity in healthy young Arab men. CONCLUSIONS These results suggest a change in a small number of differentially expressed proteins. A possible reason for this small change could be our study cohorts representing a homogeneous and healthy population. Additionally, we show differences in protein levels from skeletal muscle in low and high insulin sensitivity groups. Therefore, these differences may represent early events for the development of insulin resistance, pre-diabetes, and type 2 diabetes.
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Affiliation(s)
- Ilham Bettahi
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- *Correspondence: Ilham Bettahi,
| | - Roopesh Krishnankutty
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Morana Jaganjac
- Division of Molecular Medicine, Ruder Boskovic Institute, Zagreb, Croatia
| | - Noor Nabeel M. Suleiman
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Manjunath Ramanjaneya
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Jayakumar Jerobin
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shaimaa Hassoun
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ibrahem Abdelhakam
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Tareq A. Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | | | - Abdul Badi Abou-Samra
- Qatar Metabolic Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Weill Cornell Medicine-Qatar, Doha, Qatar
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Suleiman N, Alkasem M, Hassoun S, Abdalhakam I, Bettahi I, Mir F, Ramanjaneya M, Jerobin J, Iskandarani A, Samra TA, Chandra P, Skarulis M, Abou-Samra AB. Insulin sensitivity variations in apparently healthy Arab male subjects: correlation with insulin and C peptide. BMJ Open Diabetes Res Care 2021; 9:9/2/e002039. [PMID: 34785564 PMCID: PMC8596034 DOI: 10.1136/bmjdrc-2020-002039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 06/30/2021] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Decreased insulin sensitivity occurs early in type 2 diabetes (T2D). T2D is highly prevalent in the Middle East and North Africa regions. This study assessed the variations in insulin sensitivity in normal apparently healthy subjects and the levels of adiponectin, adipsin and inflammatory markers. RESEARCH DESIGN AND METHODS A total of 60 participants (aged 18-45, body mass index <28) with a normal oral glucose tolerance test (OGTT) completed hyperinsulinemic-euglycemic clamp (40 mU/m2/min) and body composition test by dual-energy X-ray absorptiometry scan. Blood samples were assayed for glucose, insulin, C peptide, inflammatory markers, oxidative stress markers, adiponectin and adipsin. RESULTS The subjects showed wide variations in the whole-body glucose disposal rate (M value) from 2 to 20 mg/kg/min and were divided into three groups: most responsive (M>12 mg/kg/min, n=17), least responsive (M≤6 mg/kg/min, n=14) and intermediate responsive (M=6.1-12 mg/kg/min, n=29). Insulin and C peptide responses to OGTT were highest among the least insulin sensitive group. Triglycerides, cholesterol, alanine transaminase (ALT) and albumin levels were higher in the least responsive group compared with the other groups. Among the inflammatory markers, C reactive protein (CRP) was highest in the least sensitivity group compared with the other groups; however, there were no differences in the level of soluble receptor for advanced glycation end products and Tumor Necrosis Factor Receptor Superfamily 1B (TNFRS1B). Plasma levels of insulin sensitivity markers, adiponectin and adipsin, and oxidative stress markers, oxidized low-density lipoprotein, total antioxidant capacity and glutathione peroxidase 1, were similar between the groups. CONCLUSIONS A wide range in insulin sensitivity and significant differences in triglycerides, cholesterol, ALT and CRP concentrations were observed despite the fact that the study subjects were homogenous in terms of age, gender and ethnic background, and all had normal screening comprehensive chemistry and normal glucose response to OGTT. The striking differences in insulin sensitivity reflect differences in genetic predisposition and/or environmental exposure. The low insulin sensitivity status associated with increased insulin level may represent an early stage of metabolic abnormality.
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Affiliation(s)
- Noor Suleiman
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | - Meis Alkasem
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | - Shaimaa Hassoun
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | | | - Ilham Bettahi
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Fayaz Mir
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Manjunath Ramanjaneya
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Jayakumar Jerobin
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Ahmad Iskandarani
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Tareq A Samra
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Prem Chandra
- Medical Research Center, Hamad Medical Corporation, Doha, Qatar
| | - Monica Skarulis
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
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Halama A, Suleiman NN, Kulinski M, Bettahi I, Hassoun S, Alkasem M, Abdalhakam I, Iskandarani A, Samra TA, Atkin SL, Suhre K, Abou-Samra AB. The metabolic footprint of compromised insulin sensitivity under fasting and hyperinsulinemic-euglycemic clamp conditions in an Arab population. Sci Rep 2020; 10:17164. [PMID: 33051490 PMCID: PMC7555540 DOI: 10.1038/s41598-020-73723-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/15/2020] [Indexed: 11/29/2022] Open
Abstract
Metabolic pathways that are corrupted at early stages of insulin resistance (IR) remain elusive. This study investigates changes in body metabolism in clinically healthy and otherwise asymptomatic subjects that may become apparent already under compromised insulin sensitivity (IS) and prior to IR. 47 clinically healthy Arab male subjects with a broad range of IS, determined by hyperinsulinemic-euglycemic clamp (HIEC), were investigated. Untargeted metabolomics and complex lipidomics were conducted on serum samples collected under fasting and HIEC conditions. Linear models were used to identify associations between metabolites concentrations and IS levels. Among 1896 identified metabolites, 551 showed significant differences between fasting and HIEC, reflecting the metabolic switch in energy utilization. At fasting, 336 metabolites, predominantly di- and tri-acylglycerols, showed significant differences between subjects with low and high levels of IS. Changes in amino acid, carbohydrate and fatty acid metabolism in response to insulin were impaired in subjects with low IS. Association of altered mannose and amino acids with IS was also replicated in an independent cohort of T2D patients. We identified metabolic phenotypes that characterize clinically healthy Arab subjects with low levels of IS at their fasting state. Our study is providing further insights into the metabolic pathways that precede IR.
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Affiliation(s)
- Anna Halama
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Doha, Qatar.
| | - Noor N Suleiman
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | - Michal Kulinski
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ilham Bettahi
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Shaimaa Hassoun
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | - Meis Alkasem
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ibrahem Abdalhakam
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
| | - Ahmad Iskandarani
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Tareq A Samra
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar.,Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Stephen L Atkin
- Weill Cornell Medicine-Qatar, Doha, Qatar.,Royal College of Surgeons in Ireland, Busaiteen, Bahrain
| | - Karsten Suhre
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Doha, Qatar.
| | - Abdul Badi Abou-Samra
- Department of Internal Medicine, Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar. .,Weill Cornell Medicine-Qatar, Doha, Qatar.
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Ramanjaneya M, Bensila M, Bettahi I, Jerobin J, Samra TA, Aye MM, Alkasem M, Siveen KS, Sathyapalan T, Skarulis M, Atkin SL, Abou-Samra AB. Dynamic Changes in Circulating Endocrine FGF19 Subfamily and Fetuin-A in Response to Intralipid and Insulin Infusions in Healthy and PCOS Women. Front Endocrinol (Lausanne) 2020; 11:568500. [PMID: 33101202 PMCID: PMC7554576 DOI: 10.3389/fendo.2020.568500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/25/2020] [Indexed: 12/26/2022] Open
Abstract
Background: The fibroblast growth factors (FGF) 19 subfamily, also referred to as endocrine FGFs, includes FGF19, FGF21, and FGF23 are metabolic hormones involved in the regulation of glucose and lipid metabolism. Fetuin-A is a hepatokine involved in the regulation of beta-cell function and insulin resistance. Endocrine FGFs and fetuin-A are dysregulated in metabolic disorders including obesity, type 2 diabetes, non-alcoholic fatty liver disease and polycystic ovary syndrome (PCOS). Our study was designed to examine the response of endocrine FGFs and fetuin-A to an acute intralipid, insulin infusion and exercise in PCOS and healthy women. Subjects and Measurements: Ten healthy and 11 PCOS subjects underwent 5-h saline infusions with a hyperinsulinemic-euglycemic clamp (HIEC) performed during the final 2 h. One week later, intralipid infusions were undertaken with a HIEC performed during the final 2 h. After an 8 week of exercise intervention the saline, intralipid, and HIEC were repeated. Plasma levels of endocrine FGFs and fetuin-A were measured. Results: Baseline fetuin-A was higher in PCOS women but FGF19, FGF21, and FGF23 did not differ and were unaffected by exercise. Insulin administration elevated FGF21 in control and PCOS, suppressed FGF19 in controls, and had no effects on FGF23 and fetuin-A. Intralipid infusion suppressed FGF19 and increased FGF21. Insulin with intralipid synergistically increased FGF21 and did not have effects on lipid-mediated suppression of FGF19 in both groups. Conclusion: Our study provides evidence for insulin and lipid regulation of endocrine FGFs in healthy and PCOS women, suggesting that FGF family members play a role in lipid and glucose metabolism. Clinical Trial Registration: www.isrctn.org, Identifier: ISRCTN42448814.
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Affiliation(s)
- Manjunath Ramanjaneya
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- *Correspondence: Manjunath Ramanjaneya
| | - Milin Bensila
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Ilham Bettahi
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Jayakumar Jerobin
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Tareq A. Samra
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Myint Myint Aye
- Department of Academic Endocrinology, Diabetes and Metabolism, Hull York Medical School, Hull, United Kingdom
| | - Meis Alkasem
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | | | - Thozhukat Sathyapalan
- Department of Academic Endocrinology, Diabetes and Metabolism, Hull York Medical School, Hull, United Kingdom
| | - Monica Skarulis
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | | | - Abdul-Badi Abou-Samra
- Qatar Metabolic Institute, Interim Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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Abstract
Activation of G protein-coupled receptors by agonists leads to receptor phosphorylation, internalization of ligand receptor complexes, and desensitization of hormonal response. The role of parathyroid hormone (PTH) receptor 1, PTHR1, is well characterized and known to regulate cellular responsiveness in vitro. However, the role of PTHR1 phosphorylation in bone formation is yet to be investigated. We have previously demonstrated that impaired internalization and sustained cAMP stimulation of phosphorylation-deficient (PD) PTHR1 leads to exaggerated cAMP response to subcutaneous PTH infusion in a PD knockin mouse model. To understand the physiological role of receptor internalization on PTH bone anabolic action, we examined bone parameters of wild-type (WT) and PD knockin female and male mice following PTH treatment. We found a decrease in total and diaphyseal bone mineral density in female but not in male PD mice compared with WT controls at 3-6 mo of age. This effect was attenuated at older age groups. PTH administration displayed increased bone volume and trabecular thickness in the vertebrae and distal femora of both WT and PD animals. These results suggest that PTHR1 phosphorylation does not play a major role in the anabolic action of PTH.
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Affiliation(s)
- Nabanita S Datta
- Wayne State Univ. School of Medicine, Dept. Internal Medicine/Endocrinology, 1107 Elliman Bldg., 421 E. Canfield Ave., Detroit, MI 48201, USA.
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10
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Datta NS, Samra TA, Mahalingam CD, Datta T, Abou-Samra AB. Role of PTH1R internalization in osteoblasts and bone mass using a phosphorylation-deficient knock-in mouse model. J Endocrinol 2010; 207:355-65. [PMID: 20929987 PMCID: PMC3771320 DOI: 10.1677/joe-10-0227] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Phosphorylation, internalization, and desensitization of G protein-coupled receptors, such as the parathyroid hormone (PTH) and PTH-related peptide (PTHrP) receptor (PTH1R), are well characterized and known to regulate the cellular responsiveness in vitro. However, the role of PTH1R receptor phosphorylation in bone formation and osteoblast functions has not yet been elucidated. In previous studies, we demonstrated impaired internalization and sustained cAMP stimulation of a phosphorylation-deficient (pd) PTH1R in vitro, and exaggerated cAMP and calcemic responses to s.c. PTH infusion in pdPTH1R knock-in mouse model. In this study, we examined the impact of impaired PTH1R phosphorylation on the skeletal phenotype of mice maintained on normal, low, and high calcium diets. The low calcium diet moderately reduced (P<0.05) bone volume and trabecular number, and increased trabecular spacing in both wild-type (WT) and pd mice. The effects, however, seem to be less pronounced in the female pd compared to WT mice. In primary calvarial osteoblasts isolated from 2-week-old pd or WT mice, PTH and PTHrP decreased phosphorylated extracellular signal-regulated kinases 1/2 (pERK1/2), a member of mitogen-activated protein kinase, and cyclin D1, a G₁/S phase cyclin, in vitro. In contrast to WT osteoblasts, down-regulation of cyclin D1 was sustained for longer periods of time in osteoblasts isolated from the pd mice. Our results suggest that adaptive responses of intracellular signaling pathways in the pd mice may be important for maintaining bone homeostasis.
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Affiliation(s)
- Nabanita S Datta
- Division of Endocrinology, Department of Internal Medicine, Wayne State University School of Medicine, 1107 Elliman Building, 421 East Canfield Avenue, Detroit, Michigan 48201, USA.
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Assil-Kishawi I, Samra TA, Mierke DF, Abou-Samra AB. Residue 17 of sauvagine cross-links to the first transmembrane domain of corticotropin-releasing factor receptor 1 (CRFR1). J Biol Chem 2008; 283:35644-51. [PMID: 18955489 DOI: 10.1074/jbc.m806351200] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Corticotropin-releasing factor receptor 1 (CRFR1) mediates the physiological actions of corticotropin-releasing factor in the anterior pituitary gland and the central nervous system. Using chemical cross-linking we have previously reported that residue 16 of sauvagine (SVG) is in a close proximity to the second extracellular loop of CRFR1. Here we introduced p-benzoylphenylalanine (Bpa) at position 17 of a sauvagine analog, [Tyr0, Gln1, Bpa17]SVG, to covalently label CRFR1 and characterize the cross-linking site. Using a combination of receptor mutagenesis, peptide mapping, and N-terminal sequencing, we identified His117 within the first transmembrane domain (TM1) of CRFR1 as the cross-linking site for Bpa17 of 125I-[Tyr0, Gln1, Bpa17]SVG. These data indicate that, within the SVG-CRFR1 complex, residue 17 of the ligand lies within a 9 angstroms distance from residue 117 of the TM1 of CRFR1. The molecular proximity between residue 17 of the ligand and TM1 of CRFR1 described here and between residue 16 of the ligand and the CRFR1 second extracellular loop described previously provides useful molecular constraints for modeling ligand-receptor interaction in mammalian cells expressing CRFR1.
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Affiliation(s)
- Iman Assil-Kishawi
- Endocrine Division, Department of Internal Medicine, Wayne State University School of Medicine, University Health Center, Detroit, Mighigan 48201, USA
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