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Taha A, Eroğlu H, Demirbaş İE, Demir B, Dilektaşli E. Impact of Short-Term Weight Loss on Hemostasis and Thrombosis after Bariatric Surgery. Surg Res Pract 2023; 2023:1729167. [PMID: 38028115 PMCID: PMC10661871 DOI: 10.1155/2023/1729167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Obesity causes thrombophilia and many coagulation problems related to slowing the capillary flow. We aimed to evaluate rapid weight loss outcomes in the early period after bariatric surgery on the coagulation system. Materials and Method. A prospective study enrolled 28 patients with a BMI > 40 kg/m2 who underwent bariatric surgery. Preoperative and postoperative (first and third months) demographic criteria-such as age, gender, weight, height, and alcohol and tobacco use, and biochemical parameters such as PLT, PT, aPTT, INR, bleeding time, coagulation time, fibrinogen, D-dimer, albumin, calcium, ionized calcium, vitamin D, and PTH-were analyzed. Results We found that both bleeding and thrombotic parameters increase in early-slowing surgery. The first-month platelet levels were significantly different from the preoperative values (p < 0.001). The prothrombin time in the first (p < 0.001) and third months (p < 0.009) was also comparable. The PTT in the first month was higher than in the preoperative period (p < 0.011). INR in the first month (p < 0.001) was higher than that in the preoperative period and the third month (p = 0.007) value was higher than in the first month. In terms of fibrinogen levels, all parameters indicated statistical significance within each other; preoperative to the first month (p < 0.001), the first month to the third month (p < 0.016). Third-month D-dimer levels were lower than the first month's values (p = 0.032). Conclusion Thromboembolic events have crucial importance in the converse scenario of haemorrhagic diathesis during the first months of bariatric surgery. Vitamin support and antithrombotic agents may be recommended in the early postoperative period.
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Affiliation(s)
- Ahmed Taha
- Yalova Training and Research Hospital, Department of General Surgery, Yalova, Türkiye
| | - Hasan Eroğlu
- Yalova Training and Research Hospital, Department of General Surgery, Yalova, Türkiye
| | | | - Berkay Demir
- Malatya Darende Hulusi Efendi State Hospital, Department of General Surgery, Malatya, Türkiye
| | - Evren Dilektaşli
- Bursa Yüksek İhtisas Training and Research Hospital Department of General Surgery, Bursa, Türkiye
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Acewicz M, Kasacka I. Chemerin activity in selected pathological states of human body - A systematic review. Adv Med Sci 2021; 66:270-278. [PMID: 34082283 DOI: 10.1016/j.advms.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/18/2021] [Accepted: 05/19/2021] [Indexed: 12/16/2022]
Abstract
Recent studies have revealed that fatty tissue, so far considered an energy storage organ, is also the source of many substances called adipokines, including chemerin which plays many important functions in the body. Chemerin stimulates adipocytes maturation and differentiation, as well as acts as a chemoattractant, which stimulates innate and acquired immunity. This adipokine participates in the early stages of acute inflammation as well as its suppression by reacting with the CMKLR1 receptor. In various diseases associated with inflammatory processes, the level of chemerin in the serum increases. It is also considered a marker for benign and malignant tumors. Explanation of the pathomechanisms involving this adipokine is of a high importance and may contribute to the development of new possibilities in the treatment of many diseases. The article presents the latest information on the role of chemerin in various pathological states, particularly in psoriasis.
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Affiliation(s)
- Magdalena Acewicz
- Department of Histology and Cytophysiology, Medical University of Bialystok, Bialystok, Poland
| | - Irena Kasacka
- Department of Histology and Cytophysiology, Medical University of Bialystok, Bialystok, Poland.
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Blessberger H, Mueller P, Makimoto H, Hauffe F, Meissner A, Gemein C, Schmitt J, Hamm C, Deneke T, Schiedat F, Mügge A, Gabriel M, Steinwender C. Association of adipocytokines serum levels with left atrial thrombus formation in atrial fibrillation patients on oral anticoagulation (Alert) - A cross-sectional study. Nutr Metab Cardiovasc Dis 2021; 31:860-868. [PMID: 33549449 DOI: 10.1016/j.numecd.2020.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 10/25/2020] [Accepted: 11/06/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Oral anticoagulation is effective for stroke prevention in atrial fibrillation (AF). However, strokes may still occur in high-risk individuals. We conducted a prospective trial to assess the association between adipocytokine serum levels and surrogate parameters for thromboembolic events. METHODS AND RESULTS In this cross-sectional multicenter trial, we enrolled 189 patients with AF who were on oral anticoagulation. The primary endpoint was defined as either the presence of spontaneous echo contrast (SEC), a left atrial appendage (LAA), or a left atrial (LA) thrombus on transesophageal echocardiography. We investigated the association of adipocytokine serum levels with the combined endpoint using logistic regression analysis. Forty-eight individuals (25%) were assigned to group 1 (G1) due to the occurrence of at least one of the components of the combined endpoint (41 [21.7%] SEC, 3 [1.6%] LA thrombus, 13 [6.9%] LAA thrombus), whereas the remaining patients formed group 2 (G2). The BMI, logarithmized (loge) leptin (G1: 2.0 ± 1.3 μg/ml, G2: 2.0 ± 1.1 μg/ml, p = 0.746) and visfatin serum levels (G1: 3.4 ± 0.3 ng/ml, G2: 3.4 ± 0.5 ng/ml, p = 0.900) did not significantly differ between the groups. Conversely, logarithmized adiponectin (G1: 3.3 ± 0.6 ng/ml, G2: 3.1 ± 0.7 ng/ml, p = 0.036) and resistin levels (G1: 1.8 ± 0.5 ng/ml, G2: 1.6 ± 0.5 ng/ml, p = 0.009) were higher in patients with the primary endpoint. Multivariate logistic regression analysis using a score that combined the individual adiponectin and resistin values in each patient corroborated this association. CONCLUSIONS Our results suggest that adiponectin and resistin may act as potential biomarkers to identify individuals with AF who are at high thromboembolic risk.
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Affiliation(s)
- Hermann Blessberger
- Johannes Kepler University Linz, Medical Faculty, Linz, Austria; Department of Cardiology, Kepler University Hospital, Linz, Austria.
| | - Patrick Mueller
- Department of Cardiology, Pneumology and Angiology, University Hospital Duesseldorf, Germany; Department of Cardiology II - Electrophysiology, University Hospital of Muenster, Germany
| | - Hisaki Makimoto
- Department of Cardiology, Pneumology and Angiology, University Hospital Duesseldorf, Germany
| | - Friederike Hauffe
- Department of Cardiology, Pneumology and Angiology, University Hospital Duesseldorf, Germany
| | - Anita Meissner
- Department of Cardiology, Pneumology and Angiology, University Hospital Duesseldorf, Germany
| | - Christopher Gemein
- Department of Cardiology, University Hospital Giessen, Germany; Clinic for Cardiology, Klinikum Frankfurt Hoechst, Frankfurt, Germany
| | - Joern Schmitt
- Department of Cardiology, University Hospital Giessen, Germany
| | - Christian Hamm
- Department of Cardiology, University Hospital Giessen, Germany
| | - Thomas Deneke
- Department of Cardiology, Heart Center (Herz- und Gefäßklinik GmbH), Bad Neustadt a.d. Saale, Germany
| | - Fabian Schiedat
- Department of Cardiology, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Andreas Mügge
- Department of Cardiology, BG University Hospital Bergmannsheil, Bochum, Germany
| | - Michael Gabriel
- Johannes Kepler University Linz, Medical Faculty, Linz, Austria; Institute of Nuclear Medicine and Endocrinology, Kepler University Hospital, Linz, Austria
| | - Clemens Steinwender
- Johannes Kepler University Linz, Medical Faculty, Linz, Austria; Department of Cardiology, Kepler University Hospital, Linz, Austria; Department of Internal Medicine II, Paracelsus Medical University Salzburg, Austria
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Su X, Cheng Y, Zhang G, Wang B. Chemerin in inflammatory diseases. Clin Chim Acta 2021; 517:41-47. [PMID: 33631197 DOI: 10.1016/j.cca.2021.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 02/06/2021] [Accepted: 02/09/2021] [Indexed: 12/31/2022]
Abstract
Obesity is associated with a series of health problems. Adipocytes are a huge repository of energy as well as an important source of many adipokines. In obesity, adipocytes are dysfunctional with excessive production and secretion of pro-inflammatory adipokines, such as tumor necrosis factor α (TNF-α), leptin, and chemerin. Recent studies have revealed that chemerin plays an important role in modulating physiologic as well as pathophysiologic processes. For example, chemerin stimulates maturation and differentiation of pre-adipocytes, acts as a chemoattractant and facilitates innate and acquired immunity. Furthermore, chemerin participates in the early stage of acute inflammation by reacting with the ChemR23 receptor. In various inflammatory diseases, the serum chemerin is significantly increased. Additionally, chemerin is also considered as an important biomarker for benign and malignant tumors. Thus, elucidating the pathologic mechanisms of chemerin action may facilitate the development of new therapeutic modalities to treat diverse inflammatory diseases. In this review, we summarize current knowledge of chemerin and its role as an important regulator in modulating various inflammatory diseases. Mechanisms underlying chemerin function in diverse diseases are explored to better understand its biochemistry and mechanisms of action.
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Affiliation(s)
- Xin Su
- Department of Cardiology, the Xiamen Cardiovascular Hospital of Xiamen University, Xiamen, Fujian, China
| | - Ye Cheng
- Department of Cardiology, the Xiamen Cardiovascular Hospital of Xiamen University, Xiamen, Fujian, China
| | - Guoming Zhang
- Department of Cardiology, the Xiamen Cardiovascular Hospital of Xiamen University, Xiamen, Fujian, China.
| | - Bin Wang
- Department of Cardiology, the Xiamen Cardiovascular Hospital of Xiamen University, Xiamen, Fujian, China.
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Depommier C, Flamand N, Pelicaen R, Maiter D, Thissen JP, Loumaye A, Hermans MP, Everard A, Delzenne NM, Di Marzo V, Cani PD. Linking the Endocannabinoidome with Specific Metabolic Parameters in an Overweight and Insulin-Resistant Population: From Multivariate Exploratory Analysis to Univariate Analysis and Construction of Predictive Models. Cells 2021; 10:cells10010071. [PMID: 33466285 PMCID: PMC7824762 DOI: 10.3390/cells10010071] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/21/2020] [Accepted: 12/29/2020] [Indexed: 12/18/2022] Open
Abstract
The global obesity epidemic continues to rise worldwide. In this context, unraveling new interconnections between biological systems involved in obesity etiology is highly relevant. Dysregulation of the endocannabinoidome (eCBome) is associated with metabolic complications in obesity. This study aims at deciphering new associations between circulating endogenous bioactive lipids belonging to the eCBome and metabolic parameters in a population of overweight or obese individuals with metabolic syndrome. To this aim, we combined different multivariate exploratory analysis methods: canonical correlation analysis and principal component analysis, revealed associations between eCBome subsets, and metabolic parameters such as leptin, lipopolysaccharide-binding protein, and non-esterified fatty acids (NEFA). Subsequent construction of predictive regression models according to the linear combination of selected endocannabinoids demonstrates good prediction performance for NEFA. Descriptive approaches reveal the importance of specific circulating endocannabinoids and key related congeners to explain variance in the metabolic parameters in our cohort. Analysis of quartiles confirmed that these bioactive lipids were significantly higher in individuals characterized by important levels for aforementioned metabolic variables. In conclusion, by proposing a methodology for the exploration of large-scale data, our study offers additional evidence of the existence of an interplay between eCBome related-entities and metabolic parameters known to be altered in obesity.
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Affiliation(s)
- Clara Depommier
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and Biotechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Brussels, Belgium; (C.D.); (R.P.); (A.E.); (N.M.D.)
| | - Nicolas Flamand
- Quebec Heart and Lung Institute Research Centre, Université Laval, Quebec City, QC G1V 0A6, Canada; (N.F.); (V.D.M.)
| | - Rudy Pelicaen
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and Biotechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Brussels, Belgium; (C.D.); (R.P.); (A.E.); (N.M.D.)
| | - Dominique Maiter
- Pôle EDIN, Institut de Recherches Expérimentales et Cliniques, UCLouvain, Université Catholique de Louvain, 1200 Brussels, Belgium; (D.M.); (J.-P.T.); (A.L.); (M.P.H.)
- Division of Endocrinology and Nutrition, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - Jean-Paul Thissen
- Pôle EDIN, Institut de Recherches Expérimentales et Cliniques, UCLouvain, Université Catholique de Louvain, 1200 Brussels, Belgium; (D.M.); (J.-P.T.); (A.L.); (M.P.H.)
- Division of Endocrinology and Nutrition, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - Audrey Loumaye
- Pôle EDIN, Institut de Recherches Expérimentales et Cliniques, UCLouvain, Université Catholique de Louvain, 1200 Brussels, Belgium; (D.M.); (J.-P.T.); (A.L.); (M.P.H.)
- Division of Endocrinology and Nutrition, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - Michel P. Hermans
- Pôle EDIN, Institut de Recherches Expérimentales et Cliniques, UCLouvain, Université Catholique de Louvain, 1200 Brussels, Belgium; (D.M.); (J.-P.T.); (A.L.); (M.P.H.)
- Division of Endocrinology and Nutrition, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium
| | - Amandine Everard
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and Biotechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Brussels, Belgium; (C.D.); (R.P.); (A.E.); (N.M.D.)
| | - Nathalie M. Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and Biotechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Brussels, Belgium; (C.D.); (R.P.); (A.E.); (N.M.D.)
| | - Vincenzo Di Marzo
- Quebec Heart and Lung Institute Research Centre, Université Laval, Quebec City, QC G1V 0A6, Canada; (N.F.); (V.D.M.)
- Centre NUTRISS, Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC G1V 0A6, Canada
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, 80078 Pozzuoli, Italy
| | - Patrice D. Cani
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life Sciences and Biotechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Brussels, Belgium; (C.D.); (R.P.); (A.E.); (N.M.D.)
- Correspondence: ; Tel.: +32-2-764-73-97
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Molla MD, Akalu Y, Geto Z, Dagnew B, Ayelign B, Shibabaw T. Role of Caspase-1 in the Pathogenesis of Inflammatory-Associated Chronic Noncommunicable Diseases. J Inflamm Res 2020; 13:749-764. [PMID: 33116753 PMCID: PMC7585796 DOI: 10.2147/jir.s277457] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022] Open
Abstract
Caspase-1 is the first and extensively studied inflammatory caspase that is activated through inflammasome assembly. Inflammasome is a cytosolic formation of multiprotein complex that aimed to start inflammatory response against infections or cellular damages. The process leads to an auto-activation of caspase-1 and consequent maturation of caspase-1 target molecules such as interleukin (IL)-1β and IL-18. Recently, the role of caspase-1 and inflammasome in inflammatory-induced noncommunicable diseases (NCDs) like obesity, diabetes mellitus (DM), cardiovascular diseases (CVDs), cancers and chronic respiratory diseases have widely studied. However, their reports are distinct and even they have reported contrasting role of caspase-1 in the development and progression of NCDs. A few studies have reported that caspase-1/inflammasome assembley has a protective role in the initiation and progression of these diseases through the activation of the noncanonical caspase-1 target substrates like gasdermin-D and regulation of immune cells. Conversely, others have revealed that caspase-1 has a direct/indirect effect in the development and progression of several NCDs. Therefore, in this review, we systematically summarized the role of caspase-1 in the development and progression of NCDs, especially in obesity, DM, CVDs and cancers.
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Affiliation(s)
- Meseret Derbew Molla
- Department of Biochemistry, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Yonas Akalu
- Department of Human Physiology, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Zeleke Geto
- Department of Biomedical Sciences, School of Medicine, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Baye Dagnew
- Department of Human Physiology, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Birhanu Ayelign
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
| | - Tewodros Shibabaw
- Department of Biochemistry, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia
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Obesity, Bioactive Lipids, and Adipose Tissue Inflammation in Insulin Resistance. Nutrients 2020; 12:nu12051305. [PMID: 32375231 PMCID: PMC7284998 DOI: 10.3390/nu12051305] [Citation(s) in RCA: 194] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022] Open
Abstract
Obesity is a major risk factor for the development of insulin resistance and type 2 diabetes. The exact mechanism by which adipose tissue induces insulin resistance is still unclear. It has been demonstrated that obesity is associated with the adipocyte dysfunction, macrophage infiltration, and low-grade inflammation, which probably contributes to the induction of insulin resistance. Adipose tissue synthesizes and secretes numerous bioactive molecules, namely adipokines and cytokines, which affect the metabolism of both lipids and glucose. Disorders in the synthesis of adipokines and cytokines that occur in obesity lead to changes in lipid and carbohydrates metabolism and, as a consequence, may lead to insulin resistance and type 2 diabetes. Obesity is also associated with the accumulation of lipids. A special group of lipids that are able to regulate the activity of intracellular enzymes are biologically active lipids: long-chain acyl-CoAs, ceramides, and diacylglycerols. According to the latest data, the accumulation of these lipids in adipocytes is probably related to the development of insulin resistance. Recent studies indicate that the accumulation of biologically active lipids in adipose tissue may regulate the synthesis/secretion of adipokines and proinflammatory cytokines. Although studies have revealed that inflammation caused by excessive fat accumulation and abnormalities in lipid metabolism can contribute to the development of obesity-related insulin resistance, further research is needed to determine the exact mechanism by which obesity-related insulin resistance is induced.
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Faraj M. LDL, LDL receptors, and PCSK9 as modulators of the risk for type 2 diabetes: a focus on white adipose tissue. J Biomed Res 2020; 34:251-259. [PMID: 32701068 PMCID: PMC7386410 DOI: 10.7555/jbr.34.20190124] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Type 2 diabetes (T2D) and cardiovascular disease (CVD) share many risk factors such as obesity, unhealthy lifestyle, and metabolic syndrome, whose accumulation over years leads to disease onset. However, while lowering plasma low-density lipoprotein cholesterol (LDLC) is cardio-protective, novel evidence have recognised a role for common LDLC-lowering variants (e.g. in HMGCR, PCSK9, and LDLR) and widely used hypocholesterolemic drugs that mimic the effects of some of these variants (statins) in higher risk for T2D. As these conditions decrease plasma LDLC by increasing tissue-uptake of LDL, a role for LDL receptor (LDLR) pathway was proposed. While underlying mechanisms remain to be fully elucidated, work from our lab reported that native LDL directly provoke the dysfunction of human white adipose tissue (WAT) and the activation of WAT NLRP3 (Nucleotide-binding domain and Leucine-rich repeat Receptor, containing a Pyrin domain 3) inflammasome, which play a major role in the etiology of T2D. However, while elevated plasma numbers of apolipoprotein B (apoB)-containing lipoproteins (measured as apoB, mostly as LDL) is associated with WAT dysfunction and related risk factors for T2D in our cohort, this relation was strengthened in regression analysis by lower plasma proprotein convertase subtilisin/kexin type 9 (PCSK9). This supports a central role for upregulated pathway of LDLR and/or other receptors regulated by PCSK9 such as cluster of differentiation 36 (CD36) in LDL-induced anomalies. Targeting receptor-mediated uptake of LDL into WAT may reduce WAT inflammation, WAT dysfunction, and related risk for T2D without increasing the risk for CVD.
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Affiliation(s)
- May Faraj
- Cardiovascular and Metabolic Disease Division, Montreal Clinical Research Institute, Montréal, Québec H2W 1R7, Canada;Department of Nutrition, Faculty of Medicine, University of Montréal, Montréal, Québec H3C 3J7, Canada;Montréal Diabetes Research Center, Montréal, Québec H2X 0A9, Canada
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9
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Coexistence of obstructive sleep apnea and telomerase activity, concentration of selected adipose tissue hormones and vascular endothelial function in patients with arterial hypertension. Respir Med 2019; 153:20-25. [PMID: 31136928 DOI: 10.1016/j.rmed.2019.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/12/2019] [Accepted: 05/16/2019] [Indexed: 01/21/2023]
Abstract
AIM The aim of the present study was to determine the effect of obstructive sleep apnea (OSA) with hypertension on telomerase activity, visfatin and adipsine concentration in the blood and vascular endothelial function assessed by ultrasound measured flow-mediated dilatation of the brachial artery (FMD). MATERIAL AND METHODS The study involved a group of 106 people (average age: 54.79 years). The determination of telomerase activity and blood visfatin and adipsine concentrations, brachial artery ultrasound examination with endothelium-dependent dilatation evaluation (FMD) and polysomnography were carried out. RESULTS Patients with hypertension without OSA were characterized by significantly greater FMD in comparison to patients with arterial hypertension and OSA (8.13 ± 5.12 %vs. 6.82 ± 5.36%; p < 0.05). Negative linear relationship between apnea-hypopnea index (AHI) and FMD (r = -0.22, p < 0.05) has been demonstrated. Negative linear relationship between adipsine concentration in the blood and length of REM (Rapid Eye Movement) sleep (r = -0.21, p < 0.05) was found. Positive linear relationship between the concentration of visfatin in the blood and the length of REM sleep (r = 0.22, p < 0.05) was also observed. Higher body mass index, higher total cholesterol, triglyceride and glucose levels have been shown to be independent predictors of higher AHI values, while greater telomerase activity, greater FMD and use of angiotensin converting enzyme inhibitors are independent predicators for lower AHI values. CONCLUSION Higher values of AHI index in polysomnography in hypertensive patients can be related to lower telomerase activity in the blood and impaired function of vascular endothelial function assessed using ultrasound.
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Lamantia V, Bissonnette S, Provost V, Devaux M, Cyr Y, Daneault C, Rosiers CD, Faraj M. The Association of Polyunsaturated Fatty Acid δ-5-Desaturase Activity with Risk Factors for Type 2 Diabetes Is Dependent on Plasma ApoB-Lipoproteins in Overweight and Obese Adults. J Nutr 2019; 149:57-67. [PMID: 30535058 PMCID: PMC6351138 DOI: 10.1093/jn/nxy238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/24/2018] [Indexed: 01/05/2023] Open
Abstract
Background δ-5 and δ-6 desaturases (D5D and D6D) catalyze the endogenous conversion of n-3 (ω-3) and n-6 (ω-6) polyunsaturated fatty acids (PUFAs). Their activities are negatively and positively associated with type 2 diabetes (T2D), respectively, by unclear mechanisms. Elevated plasma apoB-lipoproteins (measured as plasma apoB), which can be reduced by n-3 PUFA intake, promote T2D risk factors. Objective The aim of this study was to test the hypothesis that the association of D5D and D6D activities with T2D risk factors is dependent on plasma apoB. Methods This is a pooled analysis of 2 populations recruited for 2 different metabolic studies. It is a post hoc analysis of baseline data of these subjects [n = 98; 60% women (postmenopausal); mean ± SD body mass index (in kg/m2): 32.8 ± 4.7; mean ± SD age: 57.6 ± 6.3 y]. Glucose-induced insulin secretion (GIIS) and insulin sensitivity (IS) were measured using Botnia clamps. Plasma clearance of a high-fat meal (600 kcal/m2, 66% fat) and white adipose tissue (WAT) function (storage of 3H-triolein-labeled substrate) were assessed in a subpopulation (n = 47). Desaturase activities were estimated from plasma phospholipid fatty acids. Associations were examined using Pearson and partial correlations. Results While both desaturase activities were positively associated with percentage of eicosapentaenoic acid, only D5D was negatively associated with plasma apoB (r = -0.30, P = 0.003). Association of D5D activity with second-phase GIIS (r = -0.23, P = 0.029), IS (r = 0.33, P = 0.015, in women) and 6-h area-under-the-curve (AUC6h) of plasma chylomicrons (apoB48, r = -0.47, P = 0.020, in women) was independent of age and adiposity, but was eliminated after adjustment for plasma apoB. D6D activity was associated in the opposite direction with GIIS (r = 0.24, P = 0.049), IS (r = -0.36, P = 0.004) and AUC6h chylomicrons (r = 0.52, P = 0.004), independent of plasma apoB. Both desaturases were associated with plasma interleukin-1-receptor antagonist (D5D: r = -0.45, P < 0.001 in women; D6D: r = -0.33, P = 0.007) and WAT function (trend for D5D: r = 0.30, P = 0.05; D6D: r = 0.39, P = 0.027) independent of any adjustment. Conclusions Association of D5D activity with IS, lower GIIS, and plasma chylomicron clearance is dependent on plasma apoB in overweight and obese adults.
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Affiliation(s)
- Valérie Lamantia
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec
| | - Simon Bissonnette
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec
| | - Viviane Provost
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec
| | - Marie Devaux
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec
| | - Yannick Cyr
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec
| | | | - Christine Des Rosiers
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Cardiologie de Montréal (ICM), Montréal, Québec
| | - May Faraj
- Faculty of Medicine, Université de Montréal, Montréal, Québec,Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec,Montreal Diabetes Research Center (MDRC), Montréal, Québec,Address correspondence to MF (e-mail: )
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11
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Coyne ES, Bédard N, Gong YJ, Faraj M, Tchernof A, Wing SS. The deubiquitinating enzyme USP19 modulates adipogenesis and potentiates high-fat-diet-induced obesity and glucose intolerance in mice. Diabetologia 2019; 62:136-146. [PMID: 30386869 DOI: 10.1007/s00125-018-4754-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/25/2018] [Indexed: 01/22/2023]
Abstract
AIMS/HYPOTHESIS Elucidating the molecular mechanisms of fat accumulation and its metabolic consequences is crucial to understanding and treating obesity, an epidemic disease. We have previously observed that Usp19 deubiquitinating enzyme-null mice (Usp19-/-) have significantly lower fat mass than wild-type (WT) mice. Thus, this study aimed to provide further understanding of the role of ubiquitin-specific peptidase 19 (USP19) in fat development, obesity and diabetes. METHODS In this study, the metabolic phenotypes of WT and Usp19-/- mice were compared. The stromal vascular fractions (SVFs) of inguinal fat pads from WT and Usp19-/- mice were isolated and cells were differentiated into adipocytes in culture to assess their adipogenic capacity. Mice were fed a high-fat diet (HFD) for 18 weeks. Body composition, glucose metabolism and metabolic variables were assessed. In addition, following insulin injection, signalling activity was analysed in the muscle, liver and adipose tissue. Finally, the correlation between the expression of Usp19 mRNA and adipocyte function genes in human adipose tissue was analysed. RESULT Upon adipogenic differentiation, SVF cells from Usp19-/- failed to accumulate lipid and upregulate adipogenic genes, unlike cells from WT mice. Usp19-/- mice were also found to have smaller fat pads throughout the lifespan and a higher percentage of lean mass, compared with WT mice. When fed an HFD, Usp19-/- mice were more glucose tolerant, pyruvate tolerant and insulin sensitive than WT mice. Moreover, HFD-fed Usp19-/- mice had enhanced insulin signalling in the muscle and the liver, but not in adipose tissue. Finally, USP19 mRNA expression in human adipose tissue was positively correlated with the expression of important adipocyte genes in abdominal fat depots, but not subcutaneous fat depots. CONCLUSIONS/INTERPRETATION USP19 is an important regulator of fat development. Its inactivation in mice exerts effects on multiple tissues, which may protect against the negative metabolic effects of high-fat feeding. These findings suggest that inhibition of USP19 could have therapeutic potential to protect from the deleterious consequences of obesity and diabetes.
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Affiliation(s)
- Erin S Coyne
- Department of Biochemistry, McGill University, Montréal, QC, Canada
| | - Nathalie Bédard
- Department of Medicine, McGill University and Research Institute of the McGill University Health Centre, 1001 Décarie Blvd., Room E02.7232, Montréal, QC, H4A 3J1, Canada
| | - Ying Jia Gong
- Department of Medicine, McGill University and Research Institute of the McGill University Health Centre, 1001 Décarie Blvd., Room E02.7232, Montréal, QC, H4A 3J1, Canada
| | - May Faraj
- Institut de recherches cliniques de Montréal, Montréal, QC, Canada
- Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
- Montréal Diabetes Research Center, Montréal, QC, Canada
| | - André Tchernof
- Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ), Université Laval, Québec, QC, Canada
| | - Simon S Wing
- Department of Biochemistry, McGill University, Montréal, QC, Canada.
- Department of Medicine, McGill University and Research Institute of the McGill University Health Centre, 1001 Décarie Blvd., Room E02.7232, Montréal, QC, H4A 3J1, Canada.
- Montréal Diabetes Research Center, Montréal, QC, Canada.
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12
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Oliveira RFD, Daniele TMDC, Façanha CFS, Forti ACE, Bruin PFCD, Bruin VMSD. Adiponectin levels and sleep deprivation in patients with endocrine metabolic disorders. ACTA ACUST UNITED AC 2018; 64:1122-1128. [PMID: 30569989 DOI: 10.1590/1806-9282.64.12.1122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 05/27/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Sleep abnormalities are frequent in patients with endocrine metabolic disorders (EMD) such as arterial hypertension, diabetes and obesity. Adiponectin is a peptide largely secreted by adipocytes and has various properties e.g. anti-inflammatory, antioxidant, antiatherogenic, pro-angiogenic, vasoprotective and insulin-sensitizing. Adiponectin inversely relates to body weight and when its concentration decreases, the resistin concentration increases resulting in greater insulin resistance. OBJECTIVE The objective of this study is to examine factors influencing adiponectin levels in a population with EMD. METHODS This was a cross-sectional evaluation of 332 patients (18 to 80y) presenting arterial hypertension, pre-diabetes, diabetes, and/or obesity. Investigation included clinical evaluation of comorbidities, general blood tests and adiponectin measures (ELISA). Chronic sleep deprivation was determined if habitual sleep was <6 hours >4 days/week. RESULTS Arterial hypertension (78.5%), type-2 diabetes (82.3%), and overweight (45.0%)/obesity (38.8%) were frequent. Patients with type-2 diabetes tended to have more chronic sleep deprivation (p=0.05). Adiponectin levels increased with age and were inversely correlated with sagittal abdominal diameter (p=0.04) and fasting insulin (p=0.001). Chronic sleep deprivation was associated with higher adiponectin concentration [OR=1.34; CI=1.13-1.58; p<0.005] and this was maintained after adjustment for gender, age, body mass index, menopause, arterial hypertension, American Diabetes Association classification and physical exercise levels [OR=1.38; 0=1.14-1.66: p=0.001]. CONCLUSION In patients with EMD, adiponectin is influenced not only by obesity but also by age and sleep deprivation. The latter finding may be explained by a compensatory effect or a counter regulation to minimize the harmful effects of sleep deprivation.
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Affiliation(s)
- Roseane Feitosa de Oliveira
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil
| | - Thiago Medeiros da Costa Daniele
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil.,Sleep Lab and Biological Rhythms, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
| | - Cristina Figueiredo Sampaio Façanha
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil.,Sleep Lab and Biological Rhythms, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
| | - Adriana Costa E Forti
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil
| | - Pedro Felipe Carvalhedo de Bruin
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil.,Sleep Lab and Biological Rhythms, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
| | - Veralice Meireles Sales de Bruin
- School of Medicine, Universidade Federal do Ceará (UFC). Postgraduate Program in Medical Sciences, UFC, Fortaleza, CE, Brasil.,Sleep Lab and Biological Rhythms, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brasil
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13
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Cellulite: a cosmetic or systemic issue? Contemporary views on the etiopathogenesis of cellulite. Postepy Dermatol Alergol 2018; 35:442-446. [PMID: 30429699 PMCID: PMC6232550 DOI: 10.5114/ada.2018.77235] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 06/27/2017] [Indexed: 01/09/2023] Open
Abstract
Cellulite (also known as gynoid lipodystrophy or orange peel syndrome) is one of the most common lipodystrophy syndromes, which affects millions of post-adolescent women. Cellulite is manifested by topographic disorders of subcutaneous tissue such as nodules, edema, and abnormal fibrosis. It is located mainly on the pelvic area, especially on the buttocks. Its pathogenesis is complexed and unclear. There are several theories about its pathophysiology. Hormonal disorders, endothelial dysfunction and genetic predispositions are taken under consideration.
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14
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Bissonnette S, Saint-Pierre N, Lamantia V, Leroux C, Provost V, Cyr Y, Rabasa-Lhoret R, Faraj M. High plasma apolipoprotein B identifies obese subjects who best ameliorate white adipose tissue dysfunction and glucose-induced hyperinsulinemia after a hypocaloric diet. Am J Clin Nutr 2018; 108:62-76. [PMID: 29917037 DOI: 10.1093/ajcn/nqy070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 03/21/2018] [Indexed: 11/14/2022] Open
Abstract
Background To optimize the prevention of type 2 diabetes (T2D), high-risk obese subjects with the best metabolic recovery after a hypocaloric diet should be targeted. Apolipoprotein B lipoproteins (apoB lipoproteins) induce white adipose tissue (WAT) dysfunction, which in turn promotes postprandial hypertriglyceridemia, insulin resistance (IR), and hyperinsulinemia. Objective The aim of this study was to explore whether high plasma apoB, or number of plasma apoB lipoproteins, identifies subjects who best ameliorate WAT dysfunction and related risk factors after a hypocaloric diet. Design Fifty-nine men and postmenopausal women [mean ± SD age: 58 ± 6 y; body mass index (kg/m2): 32.6 ± 4.6] completed a prospective study with a 6-mo hypocaloric diet (-500 kcal/d). Glucose-induced insulin secretion (GIIS) and insulin sensitivity (IS) were measured by 1-h intravenous glucose-tolerance test (IVGTT) followed by a 3-h hyperinsulinemic-euglycemic clamp, respectively. Ex vivo gynoid WAT function (i.e., hydrolysis and storage of 3H-triolein-labeled triglyceride-rich lipoproteins) and 6-h postprandial plasma clearance of a 13C-triolein-labeled high-fat meal were measured in a subsample (n = 25). Results Postintervention first-phase GIISIVGTT and total C-peptide secretion decreased in both sexes, whereas second-phase and total GIISIVGTT and clamp IS were ameliorated in men (P < 0.05). Baseline plasma apoB was associated with a postintervention increase in WAT function (r = 0.61) and IS (glucose infusion rate divided by steady state insulin (M/Iclamp) r = 0.30) and a decrease in first-phase, second-phase, and total GIISIVGTT (r = -0.30 to -0.35) without sex differences. The association with postintervention amelioration in WAT function and GIISIVGTT was independent of plasma cholesterol (total, LDL, and HDL), sex, and changes in body composition. Subjects with high baseline plasma apoB (1.2 ± 0.2 g/L) showed a significant increase in WAT function (+105%; P = 0.012) and a decrease in total GIISIVGTT (-34%; P ≤ 0.001), whereas sex-matched subjects with low plasma apoB (0.7 ± 0.1 g/L) did not, despite equivalent changes in body composition and energy intake and expenditure. Conclusions High plasma apoB identifies obese subjects who best ameliorate WAT dysfunction and glucose-induced hyperinsulinemia, independent of changes in adiposity after consumption of a hypocaloric diet. We propose that subjects with high plasma apoB represent an optimal target group for the primary prevention of T2D by hypocaloric diets. This trial was registered at BioMed Central as ISRCTN14476404.
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Affiliation(s)
- Simon Bissonnette
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
| | | | - Valerie Lamantia
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
| | - Catherine Leroux
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada
| | - Viviane Provost
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
| | - Yannick Cyr
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
| | - Remi Rabasa-Lhoret
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
| | - May Faraj
- Institut de Recherches Cliniques de Montréal (IRCM), Montreal, Quebec, Canada.,Faculty of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Montreal Diabetes Research Center, Montreal (MDRC), Quebec, Canada
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15
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Sista F, Abruzzese V, Clementi M, Guadagni S, Montana L, Carandina S. Resolution of type 2 diabetes after sleeve gastrectomy: a 2-step hypothesis. Surg Obes Relat Dis 2017; 14:284-290. [PMID: 29339031 DOI: 10.1016/j.soard.2017.12.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/27/2017] [Accepted: 12/08/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Weight loss (WL) and altered gut hormonal levels are involved in glucose homeostasis after laparoscopic sleeve gastrectomy (LSG). OBJECTIVES The aim of this study was to evaluate the time-related effects of WL, ghrelin, and glucacon-like peptide-1 (GLP-1) plasma concentrations on type 2 diabetes resolution after LSG. SETTING University hospital, Italy. METHODS Ninety-one patients who underwent LSG were investigated. Insulin secretion (insulinogenic index [IGI]), insulin resistance, plasma glucose level and percentage glycated hemoglobin using the oral glucose tolerance test were assessed before surgery, on postoperative day 3, and then at 6, 12, 24, and 36 months after LSG. At the same time points, WL, ghrelin, and GLP-1 levels were determined. RESULTS During follow-up, the resolution rate of type 2 diabetes was 9.4%, 42.3%, 71.8%, 81.2%, and 91.8%, respectively. Ghrelin plasma concentrations decreased significantly after LSG (271.5 ± 24.5 pg/mL versus 122.4 ± 23.4 pg/mL, P = .04). GLP-1 plasma concentrations increased significantly after LSG (1.7 ± 2.6 pg/mL versus 2.5 ± 3.4 pg/mL, P = .04). The percentage of excess weight loss and IGI presented a positive linear correlation (r) at all follow-up time points with a strong positive correlation at 12 and 24 months. A strong negative correlation between ghrelin and IGI was recorded during the first 3 days after LSG (r = -.9). GLP-1 and IGI presented a strong positive correlation at day 3 and 6 months (i.e., .8 and .8, respectively). CONCLUSION LSG may affect glucose homeostasis by 2 different time-related modes: a first step in which the hormonal changes play a predominant role in glucose homeostasis and a second step in which the percentage excess weight loss determines the metabolic results.
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Affiliation(s)
- Federico Sista
- Department of General Surgery, Ospedale civile San Salvatore, University of L'Aquila, L'Aquila, Italy
| | - Valentina Abruzzese
- Department of General Surgery, Ospedale civile San Salvatore, University of L'Aquila, L'Aquila, Italy
| | - Marco Clementi
- Department of General Surgery, Ospedale civile San Salvatore, University of L'Aquila, L'Aquila, Italy
| | - Stefano Guadagni
- Department of General Surgery, Ospedale civile San Salvatore, University of L'Aquila, L'Aquila, Italy
| | - Laura Montana
- Assistance Publique-Hôpitaux de Paris (AP-HP), Department of digestive and metabolic surgery, Avicenne university hospital, Université Paris XIII-UFR SMBH "Léonard de Vinci", AP-HP, Bobigny, France
| | - Sergio Carandina
- ELSAN, Surgical obesity Center (CCO), Clinique Saint Michel, Toulon, France.
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16
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ApoB-lipoproteins and dysfunctional white adipose tissue: Relation to risk factors for type 2 diabetes in humans. J Clin Lipidol 2017; 11:34-45.e2. [DOI: 10.1016/j.jacl.2016.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/11/2016] [Accepted: 09/26/2016] [Indexed: 01/14/2023]
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17
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Cianflone K, Paglialunga S. Regulation of fatty acid transport and storage: influence of acylation-stimulating protein. SCANDINAVIAN JOURNAL OF FOOD & NUTRITION 2016. [DOI: 10.1080/17482970601069185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Effect of Resected Gastric Volume on Ghrelin and GLP-1 Plasma Levels: a Prospective Study. J Gastrointest Surg 2016; 20:1931-1941. [PMID: 27738878 DOI: 10.1007/s11605-016-3292-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 09/27/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND The correlation between resected gastric volume (RGV) and neuro-humoral changes (ghrelin and GLP-1) after laparoscopic sleeve gastrectomy (LSG) and their effects on type 2 diabetes mellitus (T2DM) has been evaluated. MATERIALS Ninety-eight patients were divided in two groups: RGV <1200 mL (group A: 53 pts) and RGV >1200 mL (group B: 45 pts). Insulin secretion (insulin area under the curve (AUC)), insulinogenic index (IGI) and insulin-resistance (homeostasis model assessment, HOMAIR) were assessed before and after surgery (at the 3rd day and 6, 12 and 24 months after LSG) using the oral glucose tolerance test (OGTT). At the same time, ghrelin and GLP-1 levels were determined. RESULTS A significant difference in T2DM resolution rate was observed after 6, 12 and 24 months in favour of RGV >1200 mL. Group B performed better than group A at the 3rd day and at the 6th, 12th and 24th months with regard to AUC, IGI and HOMAIR. In both groups, OGTT resulted in decreased ghrelin values and a significant increase in GLP-1 values for group B at the 3rd day and at the 6th and 12th months with no difference at the 24th month. CONCLUSION Ghrelin and GLP-1 changes play a role in the regulation of glucose metabolism during the 1st year after LSG. RGV influences ghrelin and GLP-1 plasma levels after LSG, with a significant improvement in the T2DM control.
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19
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Beneficial Effects of Bariatric Surgery on Cardiac Structure and Function in Obesity. Obes Surg 2016; 27:620-625. [DOI: 10.1007/s11695-016-2330-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Shantha GPS, Kumar AA, Ravi V, Khanna RC, Kahan S, Cheskin LJ. A clinical score to predict dose reductions of antidiabetes medications with intentional weight loss: A retrospective cohort study. Biomed J 2016; 39:188-94. [PMID: 27621120 PMCID: PMC6140282 DOI: 10.1016/j.bj.2016.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 11/14/2015] [Indexed: 01/22/2023] Open
Abstract
Background We assessed the predictive accuracy of an empirically-derived score (weight loss, insulin resistance, and glycemic control: “WIG”) to predict patients who will be successful in reducing diabetes mellitus (DM) medication use with weight loss. Methods Case records of 121 overweight and obese patients with DM at two outpatient weight management centers were analyzed. Results Mean period of follow-up was 12.5 ± 3.5 months. To derive the “WIG” scoring algorithm, one point each was assigned to “W” (loss of 5% of initial body weight within the first 3 months of attempting weight loss), “I” (triglyceride [TGL]/highdensity lipoprotein ratio >3 [marker of insulin resistance] at baseline), and “G” (glycosylated hemoglobin [A1c%] >8.5 at baseline). WIG score showed moderate accuracy in discriminating anti-DM dose reductions at baseline, and after 3 months of weight loss efforts (likelihood ratios [LR] + >1, LR− <1, and area under the curve >0.7), and demonstrated good reproducibility. Conclusions WIG score shows promise as a tool to predict success with dose reductions of antidiabetes medications.
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Affiliation(s)
- Ghanshyam Palamaner Subash Shantha
- Division of Cardiovascular Medicine, University of Iowa Hospitals and Clinics, Iowa, USA; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Anita Ashok Kumar
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Vimal Ravi
- Department of Internal Medicine, The Wright Center for Graduate Medical Education, Scranton, PA, USA
| | - Rohit C Khanna
- Division of Community Ophthalmology, Allen Foster Research Centre for Community Eye Health, International Centre for Advancement of Rural Eye Care, L V Prasad Eye Institute, Hyderabad, India
| | - Scott Kahan
- Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Health Policy, George Washington University School of Public Health and Health Services, Washington, DC, USA
| | - Lawrence J Cheskin
- Johns Hopkins Weight Management Center, Johns Hopkins University, Baltimore, MD, USA; Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Global Obesity Prevention Center at Johns Hopkins University, Baltimore, MD, USA; International Health/Human Nutrition, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
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21
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Gaio EJ, Haas AN, Rösing CK, Oppermann RV, Albandar JM, Susin C. Effect of obesity on periodontal attachment loss progression: a 5-year population-based prospective study. J Clin Periodontol 2016; 43:557-65. [DOI: 10.1111/jcpe.12544] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Eduardo José Gaio
- Faculty of Dentistry - Periodontology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Alex Nogueira Haas
- Faculty of Dentistry - Periodontology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | | | - Rui Vicente Oppermann
- Faculty of Dentistry - Periodontology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
| | - Jasim M. Albandar
- Department of Periodontology; Temple University School of Dentistry; Philadelphia PA USA
| | - Cristiano Susin
- Departments of Periodontics and Oral Biology; The Dental College of Georgia; Augusta University; Augusta GA USA
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Cyr Y, Wassef H, Bissonnette S, Lamantia V, Davignon J, Faraj M. WAT apoC-I secretion: role in delayed chylomicron clearance in vivo and ex vivo in WAT in obese subjects. J Lipid Res 2016; 57:1074-85. [PMID: 27040450 DOI: 10.1194/jlr.p064170] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Indexed: 01/14/2023] Open
Abstract
Reduced white adipose tissue (WAT) LPL activity delays plasma clearance of TG-rich lipoproteins (TRLs). We reported the secretion of apoC-I, an LPL inhibitor, from WAT ex vivo in women. Therefore we hypothesized that WAT-secreted apoC-I associates with reduced WAT LPL activity and TRL clearance. WAT apoC-I secretion averaged 86.9 ± 31.4 pmol/g/4 h and 74.1 ± 36.6 pmol/g/4 h in 28 women and 11 men with BMI ≥27 kg/m(2), respectively, with no sex differences. Following the ingestion of a (13)C-triolein-labeled high-fat meal, subjects with high WAT apoC-I secretion (above median) had delayed postprandial plasma clearance of dietary TRLs, assessed from plasma (13)C-triolein-labeled TGs and apoB48. They also had reduced hydrolysis and storage of synthetic (3)H-triolein-labeled ((3)H)-TRLs in WAT ex vivo (i.e., in situ LPL activity). Adjusting for WAT in situ LPL activity eliminated group differences in chylomicron clearance; while adjusting for plasma apoC-I, (3)H-NEFA uptake by WAT, or body composition did not. apoC-I inhibited in situ LPL activity in adipocytes in both a concentration- and time-dependent manner. There was no change in postprandial WAT apoC-I secretion. WAT apoC-I secretion may inhibit WAT LPL activity and promote delayed chylomicron clearance in overweight and obese subjects. We propose that reducing WAT apoC-I secretion ameliorates postprandial TRL clearance in humans.
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Affiliation(s)
- Yannick Cyr
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Montreal Diabetes Research Center (MDRC), Montréal, Québec, Canada
| | - Hanny Wassef
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Montreal Diabetes Research Center (MDRC), Montréal, Québec, Canada
| | - Simon Bissonnette
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Montreal Diabetes Research Center (MDRC), Montréal, Québec, Canada
| | - Valerie Lamantia
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Montreal Diabetes Research Center (MDRC), Montréal, Québec, Canada
| | - Jean Davignon
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - May Faraj
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada Montreal Diabetes Research Center (MDRC), Montréal, Québec, Canada
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Yang S, Deng H, Zhang Q, Xie J, Zeng H, Jin X, Ling Z, Shan Q, Liu M, Ma Y, Tang J, Wei Q. Amelioration of Diabetic Mouse Nephropathy by Catalpol Correlates with Down-Regulation of Grb10 Expression and Activation of Insulin-Like Growth Factor 1 / Insulin-Like Growth Factor 1 Receptor Signaling. PLoS One 2016; 11:e0151857. [PMID: 26986757 PMCID: PMC4795681 DOI: 10.1371/journal.pone.0151857] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 03/04/2016] [Indexed: 12/17/2022] Open
Abstract
Growth factor receptor-bound protein 10 (Grb10) is an adaptor protein that can negatively regulate the insulin-like growth factor 1 receptor (IGF-1R). The IGF1-1R pathway is critical for cell growth and apoptosis and has been implicated in kidney diseases; however, it is still unknown whether Grb10 expression is up-regulated and plays a role in diabetic nephropathy. Catalpol, a major active ingredient of a traditional Chinese medicine, Rehmannia, has been reported to possess anti-inflammatory and anti-aging activities and then used to treat diabetes. Herein, we aimed to assess the therapeutic effect of catalpol on a mouse model diabetic nephropathy and the potential role of Grb10 in the pathogenesis of this diabetes-associated complication. Our results showed that catalpol treatment improved diabetes-associated impaired renal functions and ameliorated pathological changes in kidneys of diabetic mice. We also found that Grb10 expression was significantly elevated in kidneys of diabetic mice as compared with that in non-diabetic mice, while treatment with catalpol significantly abrogated the elevated Grb10 expression in diabetic kidneys. On the contrary, IGF-1 mRNA levels and IGF-1R phosphorylation were significantly higher in kidneys of catalpol-treated diabetic mice than those in non-treated diabetic mice. Our results suggest that elevated Grb10 expression may play an important role in the pathogenesis of diabetic nephropathy through suppressing IGF-1/IGF-1R signaling pathway, which might be a potential molecular target of catalpol for the treatment of this diabetic complication.
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Affiliation(s)
- Shasha Yang
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Huacong Deng
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qunzhou Zhang
- Department of Oral Surgery and Pharmacology, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Jing Xie
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hui Zeng
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaolong Jin
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zixi Ling
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiaoyun Shan
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Momo Liu
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuefei Ma
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Juan Tang
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qianping Wei
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- * E-mail:
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Wassef H, Bissonnette S, Saint-Pierre N, Lamantia V, Cyr Y, Chrétien M, Faraj M. The apoB-to-PCSK9 ratio: A new index for metabolic risk in humans. J Clin Lipidol 2015; 9:664-75. [DOI: 10.1016/j.jacl.2015.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 05/08/2015] [Accepted: 06/23/2015] [Indexed: 10/23/2022]
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Pratchayasakul W, Sa-Nguanmoo P, Sivasinprasasn S, Pintana H, Tawinvisan R, Sripetchwandee J, Kumfu S, Chattipakorn N, Chattipakorn SC. Obesity accelerates cognitive decline by aggravating mitochondrial dysfunction, insulin resistance and synaptic dysfunction under estrogen-deprived conditions. Horm Behav 2015; 72:68-77. [PMID: 25989597 DOI: 10.1016/j.yhbeh.2015.04.023] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 04/22/2015] [Accepted: 04/29/2015] [Indexed: 01/08/2023]
Abstract
Chronic consumption of a high-fat diet (HF) causes peripheral insulin resistance, brain insulin resistance, brain mitochondrial dysfunction and cognitive impairment. Estrogen deprivation has also been found to impair cognition. However, the combined effect of both conditions on the brain is unclear. We hypothesized that estrogen deprivation causes brain insulin resistance, brain mitochondrial dysfunction, hippocampal synaptic dysfunction and cognitive impairment, and that consumption of a HF accelerates these impairments in an estrogen-deprived condition. Seventy-two female rats were divided into sham (S) and ovariectomized (O) groups. Rats in each group were further divided into two subgroups to be fed with either a normal diet (ND) or HF for 4, 8 and 12 weeks. At the end of each period, the Morris water maze test was carried out, after which the blood and brain were collected for metabolic and brain function analysis. Obesity, peripheral insulin resistance, increased brain oxidative stress and hippocampal synaptic dysfunction were observed at the eighth week in the NDO, HFS and HFO rats. However, these impairments were worse in the HFO rats. Interestingly, brain insulin resistance, brain mitochondrial dysfunction and cognitive impairment developed earlier (week eight) in the HFO rats, whereas these conditions were observed later at week 12 in the NDO and HFS rats. Either estrogen deprivation or HF appears to cause peripheral insulin resistance, increased brain oxidative stress, hippocampal synaptic dysfunction, brain mitochondrial dysfunction and brain insulin resistance, which together can lead to cognitive impairment. A HF accelerates and aggravates these deleterious effects under estrogen-deprived conditions.
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Affiliation(s)
- Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Piangkwan Sa-Nguanmoo
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Sivaporn Sivasinprasasn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Hiranya Pintana
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Rungroj Tawinvisan
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jirapas Sripetchwandee
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Sirinart Kumfu
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
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Wang H, Li Q, Deng W, Omari-Siaw E, Wang Q, Wang S, Wang S, Cao X, Xu X, Yu J. Self-nanoemulsifying drug delivery system of trans-cinnamic acid: formulation development and pharmacodynamic evaluation in alloxan-induced type 2 diabetic rat model. Drug Dev Res 2015; 76:82-93. [PMID: 25847843 DOI: 10.1002/ddr.21244] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/13/2015] [Indexed: 12/12/2022]
Abstract
The objective of this study was to formulate a self-nanoemulsifying oral drug delivery system (SNEDDS) for the poorly water-soluble trans-Cinnamic acid (t-CA SNEDDS) that could be evaluated for its antihyperglycemic efficacy in comparison to the parent t-CA in an alloxan-induced diabetic rat model. A SNEDDS formulation consisting of 60% surfactant (Kolliphor EL), 10% co-surfactant (PEG 400) and 30% oil (isopropyl myristate) proved to be optimal. t-CA SNEDDS (80 mg/kg, p.o.), t-CA suspension (80 mg/kg, p.o.), and Metformin Hydrochloride Tablets (230 mg/kg, p.o.) were administer qdfor 30 days to diabetic rats. After treatment the body weight of diabetic rats was increased, blood glucose levels, total cholesterol, and triglyceride in the serum tended to be normalized, while the levels of alanine aminotransferase and aspartate aminotransferase were markedly decreased. The effects of t-CA SNEDDS were superior to that of the t-CA suspension. The present study demonstrated that t-CA was effective in attenuating the effects of alloxan treatment and that t-CA SNEDDS with a more favorable absorption and enhanced bioavailability is more effective than t-CA.
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Affiliation(s)
- Houyong Wang
- Department of Pharmaceutics, School of Pharmacy, Center for Nano Drug/Gene Delivery and Tissue Engineering, Jiangsu University, Zhenjiang, People's Republic of China
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Liu Y, Gupta P, Lapointe M, Yotsapon T, Sarat S, Cianflone K. Acylation stimulating protein, complement C3 and lipid metabolism in ketosis-prone diabetic subjects. PLoS One 2014; 9:e109237. [PMID: 25275325 PMCID: PMC4183552 DOI: 10.1371/journal.pone.0109237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 09/03/2014] [Indexed: 01/29/2023] Open
Abstract
Background Ketosis-prone diabetes (KPDM) is new-onset diabetic ketoacidosis without precipitating factors in non-type 1 diabetic patients; after management, some are withdrawn from exogenous insulin, although determining factors remain unclear. Methods Twenty KPDM patients and twelve type 1 diabetic patients (T1DM), evaluated at baseline, 12 and 24 months with/without insulin maintenance underwent a standardized mixed-meal tolerance test (MMTT) for 2 h. Results At baseline, triglyceride and C3 were higher during MMTT in KPDM vs. T1DM (p<0.0001) with no differences in non-esterified fatty acids (NEFA) while Acylation Stimulating Protein (ASP) tended to be higher. Within 12 months, 11 KPDM were withdrawn from insulin treatment (KPDM-ins), while 9 were maintained (KPDM+ins). NEFA was lower in KPDM-ins vs. KPDM+ins at baseline (p = 0.0006), 12 months (p<0.0001) and 24 months (p<0.0001) during MMTT. NEFA in KPDM-ins decreased over 30–120 minutes (p<0.05), but not in KPDM+ins. Overall, C3 was higher in KPDM-ins vs KPDM+ins at 12 months (p = 0.0081) and 24 months (p = 0.0019), while ASP was lower at baseline (p = 0.0024) and 12 months (p = 0.0281), with a decrease in ASP/C3 ratio. Conclusions Notwithstanding greater adiposity in KPDM-ins, greater NEFA decreases and lower ASP levels during MMTT suggest better insulin and ASP sensitivity in these patients.
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Affiliation(s)
- Yan Liu
- Centre de Recherche de l’Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Québec, Canada
- Department of Pediatrics, Tongji Hospital, HuaZhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | - Priyanka Gupta
- Centre de Recherche de l’Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Québec, Canada
| | - Marc Lapointe
- Centre de Recherche de l’Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Québec, Canada
| | - Thewjitcharoen Yotsapon
- Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sunthornyothin Sarat
- Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Katherine Cianflone
- Centre de Recherche de l’Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Québec, Canada
- * E-mail:
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Wassef H, Davignon J, Prud’homme D, Rabasa-Lhoret R, Faraj M. Changes in total and central fat mass after a hypocaloric diet associate with changes of apoC-I in postmenopausal obese women. J Clin Lipidol 2014; 8:510-9. [DOI: 10.1016/j.jacl.2014.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/26/2014] [Accepted: 06/09/2014] [Indexed: 10/25/2022]
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Pratchayasakul W, Chattipakorn N, Chattipakorn SC. Estrogen restores brain insulin sensitivity in ovariectomized non-obese rats, but not in ovariectomized obese rats. Metabolism 2014; 63:851-9. [PMID: 24742706 DOI: 10.1016/j.metabol.2014.03.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/26/2014] [Accepted: 03/17/2014] [Indexed: 11/21/2022]
Abstract
OBJECTIVE We previously demonstrated that obesity caused the reduction of peripheral and brain insulin sensitivity and that estrogen therapy improved these defects. However, the beneficial effect of estrogen on brain insulin sensitivity and oxidative stress in either ovariectomy alone or ovariectomy with obesity models has not been determined. We hypothesized that ovariectomy alone or ovariectomy with obesity reduces brain insulin sensitivity and increases brain oxidative stress, which are reversed by estrogen treatment. MATERIALS/METHODS Thirty female rats were assigned as either sham-operated or ovariectomized. After the surgery, each group was fed either a normal diet or high-fat diet for 12 weeks. At week 13, rats in each group received either the vehicle or estradiol for 30 days. At week 16, blood and brain were collected for determining the peripheral and brain insulin sensitivity as well as brain oxidative stress. RESULTS We found that ovariectomized rats and high-fat diet fed rats incurred obesity, reduced peripheral and brain insulin sensitivity, and increased brain oxidative stress. Estrogen ameliorated peripheral insulin sensitivity in these rats. However, the beneficial effect of estrogen on brain insulin sensitivity and brain oxidative stress was observed only in ovariectomized normal diet-fed rats, but not in ovariectomized high fat diet-fed rats. CONCLUSIONS Our results suggested that reduced brain insulin sensitivity and increased brain oxidative stress occurred after either ovariectomy or obesity. However, the reduced brain insulin sensitivity and the increased brain oxidative stress in ovariectomy with obesity could not be ameliorated by estrogen treatment.
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Affiliation(s)
- Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
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Skeldon AM, Faraj M, Saleh M. Caspases and inflammasomes in metabolic inflammation. Immunol Cell Biol 2014; 92:304-13. [DOI: 10.1038/icb.2014.5] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 12/23/2013] [Accepted: 01/06/2014] [Indexed: 12/22/2022]
Affiliation(s)
| | - May Faraj
- Institut de Recherches Cliniques de Montréal (IRCM), Faculty of Medicine, Université de MontréalMontréalQuébecCanada
| | - Maya Saleh
- Department of Biochemistry, McGill UniversityMontréalQuébecCanada
- Department of Medicine, McGill UniversityMontréalQuébecCanada
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Bursać BN, Vasiljević AD, Nestorović NM, Veličković NA, Vojnović Milutinović DD, Matić GM, Djordjevic AD. High-fructose diet leads to visceral adiposity and hypothalamic leptin resistance in male rats--do glucocorticoids play a role? J Nutr Biochem 2014; 25:446-55. [PMID: 24565674 DOI: 10.1016/j.jnutbio.2013.12.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 11/29/2013] [Accepted: 12/16/2013] [Indexed: 12/22/2022]
Abstract
Fructose overconsumption has been involved in the genesis and progression of the metabolic syndrome. Hypothalamus and adipose tissue, major organs for control of food intake and energy metabolism, play crucial roles in metabolic homeostasis. We hypothesized that glucocorticoid signaling mediates the effects of a fructose-enriched diet on visceral adiposity by acting on neuropeptide Y (NPY) in the hypothalamus and altering adipogenic transcription factors in the visceral adipose tissue. We analyzed the effects of 9-week consumption of 60% fructose solution on dyslipidemia, insulin and leptin sensitivity, and adipose tissue histology in male Wistar rats. Glucocorticoid signaling was assessed in both hypothalamus and visceral adipose tissue, while the levels of peroxisome-proliferator-activated receptor γ (PPARγ), sterol regulatory element-binding protein-1 (SREBP-1) and lipin-1, together with the levels of their target genes expression, were analyzed in the visceral adipose tissue. The results showed that long-term consumption of highly concentrated liquid fructose led to the development of visceral adiposity, elevated triglycerides and hypothalamic leptin resistance accompanied by stimulated glucocorticoid signaling and NPY mRNA elevation. Results from adipose tissue implied that fructose consumption shifted the balance between glucocorticoid receptor and adipogenic transcriptional factors (PPARγ, SREBP-1 and lipin-1) in favor of adipogenesis judged by distinctly separated populations of small adipocytes observed in this tissue. In summary, we propose that high-fructose-diet-induced alterations of glucocorticoid signaling in both hypothalamus and adipose tissue result in enhanced adipogenesis, possibly serving as an adaptation to energy excess in order to limit deposition of fat in nonadipose tissues.
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Affiliation(s)
- Biljana N Bursać
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Ana D Vasiljević
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Nataša M Nestorović
- Department of Cytology, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Nataša A Veličković
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Danijela D Vojnović Milutinović
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Gordana M Matić
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Ana D Djordjevic
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia.
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Bays H, Blonde L, Rosenson R. Adiposopathy: how do diet, exercise and weight loss drug therapies improve metabolic disease in overweight patients? Expert Rev Cardiovasc Ther 2014; 4:871-95. [PMID: 17173503 DOI: 10.1586/14779072.4.6.871] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An increase in bodyweight is generally associated with an increased risk of excessive fat-related metabolic diseases (EFRMD), including Type 2 diabetes mellitus, hypertension and dyslipidemia. However, not all patients who are overweight have EFRMD, and not all patients with EFRMD are significantly overweight. The adipocentric paradigm provides the basis for a unifying, pathophysiological process whereby fat gain in susceptible patients leads to fat dysfunction ('sick fat'), and wherein pathological abnormalities in fat function (adiposopathy) are more directly related to the onset of EFRMD than increases in fat mass (adiposity) alone. But just as worsening fat function worsens EFRMD, improved fat function improves EFRMD. Peroxisome proliferator-activated receptor-gamma agonists increase the recruitment, proliferation and differentiation of preadipocytes ('healthy fat') and cause apoptosis of hypertrophic and dysfunctional (including visceral) adipocytes resulting in improved fat function and improved metabolic parameters associated with EFRMD. Weight loss interventions, such as a hypocaloric diet and physical exercise, in addition to agents such as orlistat, sibutramine and cannabinoid receptor antagonists, may have favorable effects upon fat storage (lipogenesis and fat distribution), nutrient metabolism (such as free fatty acids), favorable effects upon adipose tissue factors involved in metabolic processes and inflammation, and enhanced 'cross-talk' with other major organ systems. In some cases, weight loss therapeutic agents may even affect metabolic parameters and adipocyte function independently of weight loss alone, suggesting that the benefit of these agents in improving EFRMD may go beyond their efficacy in weight reduction. This review describes how adiposopathy interventions may affect fat function, and thus improve EFRMD.
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Affiliation(s)
- Harold Bays
- L-MARC Research Center, Medical Director/President, 3288 Illinois Avenue, Louisville, KY 40213, USA.
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Cortez M, Singleton JR, Smith AG. Glucose intolerance, metabolic syndrome, and neuropathy. ACTA ACUST UNITED AC 2014; 126:109-22. [DOI: 10.1016/b978-0-444-53480-4.00009-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Habib SS, A Al Regaeiy K, Al Dokhi L. Assessment of adipokines relationships with cardiovascular risk markers in relation to body indices in normoglycemic males. Pak J Med Sci 2013; 29:21-6. [PMID: 24353501 PMCID: PMC3809172 DOI: 10.12669/pjms.291.2913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 10/11/2012] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES To evaluate the phenotypic relationship between obesity indices, resistin, adiponectin and cardiovascular risk markers in normoglycemic healthy individuals. METHODOLOGY This cross-sectional study was conducted in the Department of Physiology College of Medicine, King Saud University, Riyadh. A total of 120 male subjects were selected for the study. All subjects underwent analysis of body composition, glucose, glycosylated hemoglobin (HbA1c), lipids, adiponectin, resistin, lipoprotein(a) and high sensitivity C reactive protein (hsCRP). RESULTS Body mass index (BMI) (r=0.326, p < 0.001), body fat mass (BFM) (r=0.377, p < 0.001), body fat percentage (BF%) (r=0.326, p < 0.001), waist hip ratio (WHR) (r=0.402, p < 0.001) and basal Insulin levels (r=0.217, p=0.018) were positively correlated with hsCRP. However, serum adiponectin levels (r=0.189, p=0.0391) were negatively correlated with hsCRP. Adiponectin levels were significantly lower in obese compared to non obese subjects (p=0.0551). Keeping hsCRP as dependant variable we observed that WHR, BFM, BF%, BMI and adiponectin were significant predictors in univariate analysis. In multiple regression analysis WHR and adiponectin were independent predictors of hsCRP. CONCLUSION Obese individuals have significantly higher levels of hsCRP levels and lower adiponectin levels than non obese subjects. Serum adiponectin levels and WHR are independant predictors of hsCRP levels in normoglycemic subjects.
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Affiliation(s)
- Syed Shahid Habib
- Syed Shahid Habib, FCPS, Department of Physiology, College of Medicine, King Saud University, Riyadh-11461, Kingdom of Saudi Arabia
| | - Khlalid A Al Regaeiy
- Khlalid A Al Regaeiy, PhD, Department of Physiology, College of Medicine, King Saud University, Riyadh-11461, Kingdom of Saudi Arabia
| | - Laila Al Dokhi
- Laila Al Dokhi, PhD, Department of Physiology, College of Medicine, King Saud University, Riyadh-11461, Kingdom of Saudi Arabia
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Talc used in anticancer drugs is promoter for diabetes in hepatocellular carcinoma induced rats. Eur J Cancer 2013; 50:247-8. [PMID: 24188999 DOI: 10.1016/j.ejca.2013.09.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 09/30/2013] [Indexed: 11/27/2022]
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Bissonnette S, Salem H, Wassef H, Saint-Pierre N, Tardif A, Baass A, Dufour R, Faraj M. Low density lipoprotein delays clearance of triglyceride-rich lipoprotein by human subcutaneous adipose tissue. J Lipid Res 2013; 54:1466-76. [PMID: 23417739 DOI: 10.1194/jlr.p023176] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Delayed clearance of triglyceride-rich lipoprotein (TRL) by white adipose tissue (WAT) promotes hypertriglyceridemia and elevated apoB-lipoproteins, which are primarily in the form of LDL. This study examines whether LDL promotes delayed clearance of TRL by WAT. Following the ingestion of a (13)C-triolein-labeled high-fat meal, obese women with high plasma apoB (> median 0.93 g/l, N = 11, > 98% as IDL/LDL) had delayed clearance of postprandial (13)C-triglyceride and (13)C-NEFA over 6 h compared with controls. AUC6 h of plasma (13)C-triglyceride and (13)C-NEFA correlated with plasma apoB but not with LDL diameter or adipocyte area. There was no group difference in (13)C-triolein oxidation rate, which suggests lower (13)C-NEFA storage in peripheral tissue in women with high apoB. Ex vivo/in vitro plasma apoB correlated negatively with WAT (3)H-lipid following a 4 h incubation of women's WAT with synthetic (3)H-triolein-TRL. LDL-differentiated 3T3-L1 adipocytes had lower (3)H-TRL hydrolysis and (3)H-NEFA storage. Treatment of women's WAT with their own LDL decreased (3)H-TRL hydrolysis and (3)H-NEFA uptake. Finally, LDL, although not an LPL substrate, reduced LPL-mediated (3)H-TRL hydrolysis as did VLDL and HDL. Exposure to LDL decreases TRL clearance by human WAT ex vivo. This may promote production of apoB-lipoproteins and hypertriglyceridemia through a positive-feedback mechanism in vivo.
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Affiliation(s)
- Simon Bissonnette
- Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
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Wassef H, Salem H, Bissonnette S, Baass A, Dufour R, Davignon J, Faraj M. White adipose tissue apolipoprotein C-I secretion in relation to delayed plasma clearance of dietary fat in humans. Arterioscler Thromb Vasc Biol 2012; 32:2785-93. [PMID: 22995522 DOI: 10.1161/atvbaha.112.300306] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE White adipose tissue (WAT) dysfunction is characterized by delayed clearance of dietary triglyceride-rich lipoproteins (TRL). We reported that apolipoprotein (apo) C-I, a transferable apolipoprotein that inhibits lipoprotein lipase activity when bound to TRL, was produced by a human adipocyte model. Thus, we aimed to determine whether increased WAT apoC-I secretion is related to delayed dietary fat clearance in humans. METHODS AND RESULTS After the ingestion of a (13)C-triolein-labeled high-fat meal, postmenopausal obese women with high-fasting WAT apoC-I secretion (median >0.81 μmol/L per g/4 hours, n=9) had delayed postprandial plasma clearance of (13)C-triglyceride and (13)C-nonesterified fatty acids over 6 hours compared with controls. WAT apoC-I secretion over 4 hours correlated with fasting total and non-high-density lipoprotein apoC-I but not with high-density lipoprotein apoC-I and was the primary predictor of 4-hour postprandial increases in TRL apoC-I. Correction for TRL apoC-I eliminated the association of WAT apoC-I with 6-hour area under the curve of plasma (13)C-triglyceride; correction for insulin sensitivity or inflammation did not. Finally, in addition to apoC-I, WAT secreted considerable amount of apoC-II, apoC-III, and apoE over 24 hours; however, only WAT apoC-I secretion was associated with 6-hour area under the curve of plasma (13)C-triglyceride. CONCLUSIONS Increased WAT apoC-I secretion in obese women is associated with delayed postprandial dietary fat clearance mediated by increased TRL apoC-I. Thus, we hypothesize that reducing WAT apoC-I secretion ameliorates WAT dysfunction and associated cardiometabolic risks in humans.
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Affiliation(s)
- Hanny Wassef
- Institut de recheches cliniques de Montréal (IRCM), Montréal, Québec, Canada
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Verzeletti GN, Gaio EJ, Linhares DS, Rösing CK. Effect of obesity on alveolar bone loss in experimental periodontitis in Wistar rats. J Appl Oral Sci 2012; 20:218-21. [PMID: 22666840 PMCID: PMC3894766 DOI: 10.1590/s1678-77572012000200016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2010] [Accepted: 06/07/2011] [Indexed: 11/21/2022] Open
Abstract
Obesity has been linked to higher inflammatory status and periodontal breakdown.
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Smith JD, Cianflone K, Martin J, Poirier P, Broderick TL, Noël M. Plasma adipokine and hormone changes in mountaineers on ascent to 5300 meters. Wilderness Environ Med 2011; 22:107-14. [PMID: 21664558 DOI: 10.1016/j.wem.2011.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 12/06/2010] [Accepted: 01/13/2011] [Indexed: 01/12/2023]
Abstract
OBJECTIVE The current study evaluated multiple metabolic and inflammatory hormone responses in recreational climbers (7 men and 3 women, age 26-49 years) over 9 days. In particular, acylation-stimulating protein (ASP), which influences fat storage in adipose tissue, has not been measured at high altitude. METHODS Serial measurements were taken at sea level (SL), or 353 m, on day 0, 4000 m on day 3, 4750 m on day 6, and 5300 m on day 9 of the expedition. RESULTS Body mass index (BMI) decreased upon ascent to 5300 m from SL (SL 23.2 ± 1.5 kg/m(2); 4000 m 23.2 ± 1.4 kg/m(2); 4750 m 22.9 ± 1.3 kg/m(2); 5300 m 22.3 ± 1.2 kg/m(2); P<.001). Similarly, plasma non-esterified fatty acids and triglycerides increased, while HDL cholesterol decreased (P<.05 to <.001) from SL to 5300 m. Acylation-stimulating protein (SL 42.2 ± 40.2 nm; 4000 m 117.0 ± 69.6 nm; 4750 m 107.9 ± 44.5 nm; 5300 m 82.2 ± 20.2 nm; P=.019) and adiponectin (SL 10.4 ± 6.5 ng/mL, 4000 m 13.9 ± 8.5 ng/mL, 4750 m 18.3 ± 8.3 ng/mL, 5300 m 14.7 ± 8.0 ng/mL; P=.015) increased, as did insulin and Interleukin-6 (IL-6) levels (up to 71% and 168%, respectively; P<.05) with no change in leptin, complement C3 (C3), high sensitivity C-reactive protein (hsCRP) or cortisol levels throughout the mountain ascent from SL to 5300 m. CONCLUSION Acylation-stimulating protein and adiponectin are increased during a 9-day period of high altitude (SL to 5300 m) exposure despite weight loss in healthy mountaineers.
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Affiliation(s)
- Jessica D Smith
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Québec, QC, Canada
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Vergès B, Bonnard C, Renard E. Beyond glucose lowering: glucagon-like peptide-1 receptor agonists, body weight and the cardiovascular system. DIABETES & METABOLISM 2011; 37:477-88. [PMID: 21871831 DOI: 10.1016/j.diabet.2011.07.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 07/03/2011] [Accepted: 07/08/2011] [Indexed: 02/07/2023]
Abstract
AIM Glucagon-like peptide-1 (GLP-1) belongs to the incretin hormone family: in the presence of elevated blood glucose, it stimulates insulin secretion and inhibits glucagon production. In addition, GLP-1 slows gastric emptying. GLP-1 secretion has also been reported to potentially affect patients with type 2 diabetes (T2DM) compared with non-diabetics and, as enzymatic inactivation by dipeptidyl peptidase-4 (DPP-4) shortens the GLP-1 half-life to a few minutes, GLP-1 receptor agonists such as exenatide twice daily (BID) and liraglutide have been developed, and have become part of the management of patients with T2DM. This review focuses on the potential beneficial effects of these compounds beyond those associated with improvements in blood glucose control and weight loss, including changes in the cardiovascular and central nervous systems. METHODS This was a state-of-the-art review of the literature to evaluate the relationships between GLP-1, GLP-1 receptor agonists, weight and the cardiovascular system. RESULTS GLP-1 receptor agonists improve glucose control and do not significantly increase the risk of hypoglycaemia. Also, this new class of antidiabetic drugs was shown to favour weight loss. Mechanisms may involve central action, direct action by reduction of food intake and probably indirect action through slowing of gastric emptying. The relative importance of each activity remains unclear. Weight loss may improve cardiovascular outcomes in patients with T2DM, although GLP-1 receptor agonists may have other direct and indirect effects on the cardiovascular system. Reductions in myocardial infarct size and improvements in cardiac function have been seen in animal models. Beneficial changes in cardiac function were also demonstrated in patients with myocardial infarcts or heart failure. Indirect effects could involve a reduction in blood pressure and potential effects on oxidation. However, the mechanisms involved in the pleiotropic effects of GLP-1 receptor agonists have yet to be completely elucidated and require further study. CONCLUSION These compounds may play an important role in the treatment of patients with T2DM as their potential effects go beyond glucose-lowering (weight loss, potential improvement of cardiovascular risk factors). However, to better understand their place in the management of T2DM, further experimental and clinical prospective studies are required.
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Affiliation(s)
- B Vergès
- Department of Endocrinology and Diabetes, Bocage Hospital and Inserm CRI 866, CHU of Dijon, Dijon, France
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Athyros VG, Tziomalos K, Karagiannis A, Mikhailidis DP. Dyslipidaemia of obesity, metabolic syndrome and type 2 diabetes mellitus: the case for residual risk reduction after statin treatment. Open Cardiovasc Med J 2011; 5:24-34. [PMID: 21660248 PMCID: PMC3109607 DOI: 10.2174/1874192401105010024] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 01/03/2011] [Accepted: 01/06/2011] [Indexed: 12/21/2022] Open
Abstract
Dyslipidaemia is frequently present in obesity, metabolic syndrome (MetS) and type 2 diabetes mellitus (T2DM). The predominant features of dyslipidaemia in these disorders include increased flux of free fatty acids (FFA), raised triglyceride (TG) and low high density lipoprotein cholesterol (HDL-C) levels, a predominance of small, dense (atherogenic) low density lipoprotein cholesterol (LDL) particles and raised apolipoprotein (apo) B values Posprandial hyperlipidaemia may also be present. Insulin resistance (IR) appears to play an important role in the pathogenesis of dyslipidaemia in obesity, MetS and T2DM. The cornerstone of treatment of this IR-related dyslipidaemia is lifestyle changes and in diabetic patients, tight glycaemic control. In addition to these measures, recent clinical trials showed benefit with statin treatment. Nevertheless, a substantial percentage of patients treated with statins still experience vascular events. This residual vascular risk needs to be addressed. This review summarizes the effects of hypolipidaemic drug combinations (including statins with cholesterol ester protein inhibitors, niacin, fibrates or fish oil, as well as fibrate-ezetimibe combination) on the residual vascular risk in patients with obesity, MetS or T2DM.
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Affiliation(s)
- Vasilios G Athyros
- Second Propedeutic Department of Internal Medicine, Aristotle University, Hippocration Hospital, Thessaloniki, Greece
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Faraj M, Lavoie MÈ, Messier L, Bastard JP, Prud’homme D. Reduction in serum apoB is associated with reduced inflammation and insulin resistance in post-menopausal women: A MONET study. Atherosclerosis 2010; 211:682-8. [DOI: 10.1016/j.atherosclerosis.2010.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Revised: 04/10/2010] [Accepted: 04/12/2010] [Indexed: 11/29/2022]
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Pérez-Romero N, Serra A, Granada ML, Rull M, Alastrué A, Navarro-Díaz M, Romero R, Fernández-Llamazares J. Effects of Two Variants of Roux-en-Y Gastric Bypass on Metabolism Behaviour: Focus on Plasma Ghrelin Concentrations Over a 2-Year Follow-up. Obes Surg 2009; 20:600-9. [DOI: 10.1007/s11695-009-0035-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Accepted: 11/17/2009] [Indexed: 12/31/2022]
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Smith J, Cianflone K, Biron S, Hould FS, Lebel S, Marceau S, Lescelleur O, Biertho L, Simard S, Kral JG, Marceau P. Effects of maternal surgical weight loss in mothers on intergenerational transmission of obesity. J Clin Endocrinol Metab 2009; 94:4275-83. [PMID: 19820018 DOI: 10.1210/jc.2009-0709] [Citation(s) in RCA: 227] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVES By studying cardiometabolic risk factors in children born after maternal biliopancreatic diversion bariatric surgery (AMS) compared with those in children born before maternal surgery (BMS), we tested the hypothesis that significant maternal weight loss may modify obesity-related factors transmitted via the intrauterine environment. DESIGN Anthropometry and fasting blood levels were studied in 49 mothers who had lost 36 +/- 1.8% body weight sustained for 12 +/- 0.8 yr and their 111 children (54 BMS and 57 AMS) aged 2.5-26 yr. RESULTS AMS children had lower birth weight (2.9 +/- 0.1 AMS vs. 3.3 +/- 0.1 kg BMS, P = 0.003) associated with a reduced prevalence of macrosomia (1.8 AMS vs. 14.8% BMS, P = 0.03) with no difference in underweight. At the time of follow-up, AMS children exhibited 3-fold lower prevalence of severe obesity (11 vs. 35%, P = 0.004), greater insulin sensitivity (homeostasis model assessment of insulin resistance index 3.4 +/- 0.3 vs. 4.8 +/- 0.5, P = 0.02), improved lipid profile (cholesterol/high-density lipoprotein cholesterol 2.96 +/- 0.11 vs 3.40 +/- 0.18, P = 0.03; high-density lipoprotein cholesterol 1.50 +/- 0.05 vs. 1.35 +/- 0.05 mmol/liter, P = 0.04), lower C-reactive protein (0.88 +/- 0.17 vs. 2.00 +/- 0.34 microg/ml, P = 0.004), and leptin (11.5 +/- 1.5 vs.19.7 +/- 2.5 ng/ml, P = 0.005) and increased ghrelin (1.28 +/- 0.06 vs.1.03 +/- 0.06 ng/ml, P = 0.005) than BMS offspring (AMS vs. BMS, respectively, for all). CONCLUSIONS This unique study of children aged 2.5-26 yr born before and after maternal antiobesity surgery demonstrated improvements in cardiometabolic markers sustained into adolescence, attributable to an improved intrauterine environment.
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Affiliation(s)
- J Smith
- Institut Universitaire de Cardiologie et Pneumologie de Québec, Laval University, Québec, Canada
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Pui TS, Agarwal A, Ye F, Tou ZQ, Huang Y, Chen P. Ultra-sensitive detection of adipocytokines with CMOS-compatible silicon nanowire arrays. NANOSCALE 2009; 1:159-163. [PMID: 20644875 DOI: 10.1039/b9nr00092e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Perfectly aligned arrays of single-crystalline silicon nanowires were fabricated using top-down CMOS-compatible techniques. We demonstrate that these nanowire devices are able to detect adipocytokines secreted by adipose cells with femtomolar sensitivity, high specificity, wide detection range, and ability for parallel monitoring. The nanowire sensors also provide a novel tool to reveal the poorly understood signaling mechanisms of these newly recognized signaling molecules, as well as their relevance in common diseases such as obesity and diabetes.
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Affiliation(s)
- Tze-Sian Pui
- Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 11 Science Park Road, 117685 Singapore
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C5a- and ASP-mediated C5L2 activation, endocytosis and recycling are lost in S323I-C5L2 mutation. Mol Immunol 2009; 46:3086-98. [PMID: 19615750 DOI: 10.1016/j.molimm.2009.06.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 05/26/2009] [Accepted: 06/04/2009] [Indexed: 01/10/2023]
Abstract
UNLABELLED C5L2, a G-protein-coupled receptor (GPCR), has been identified as an ASP (C3adesArg) and C5a receptor. Controversy exists regarding both ligand binding and functionality. ASP activation of C5L2 is proposed to regulate fat storage. C5L2 is also proposed as a decoy receptor for C5a, an inflammatory mediator, based on absence of Ca(2+) or chemotaxis changes. AIMS (i) to evaluate C5L2 receptor activation and recycling using recombinant ASP (rASP) and rC5a and (ii) assess receptor trafficking of S323I-C5L2 mutation previously identified in a family and demonstrated to have altered functionality. RESULTS stably transfected C5L2-HEK cells were sorted using fluorescent-ASP (Fluos-ASP) binding. Following 2-h serum-free pretreatment, C5L2 was typically localized to the cell-surface. beta-Arrestin-2-GFP transiently transfected C5L2-HEK cells demonstrated rASP and rC5a-dependent beta-arrestin-2-GFP translocation, which showed time-dependent intracellular colocalization with C5L2. Without ligand or C5L2 transfection, no translocation was identified at any time point. Ligand-dependent (rASP and rC5a) C5L2 endocytosis was time-dependent with a 1-h nadir, and was clathrin- and cholesterol-dependent. Transiently transfected Rab-GFP proteins (Rabs 5, 7 and 11) demonstrated time-dependent colocalization of Rab5, Rab7, and Rab11 with C5L2. In contrast to C5L2, a large proportion of stably transfected S323I-C5L2 did not localize to the cell-surface. While S323I-C5L2 was competent for Fluos-ASP and (125)I-ASP binding, although at a reduced level, there was no ligand-mediated receptor phosphorylation. Further, there was no ligand-mediated activation of beta-arrestin-2-GFP translocation, and no downstream functional activation of glucose transport or triglyceride synthesis. CONCLUSION C5L2 is a functional metabolic receptor, and serine 323 is important for ASP induced functionality.
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Trakhtenbroit MA, Leichman JG, Algahim MF, Miller CC, Moody FG, Lux TR, Taegtmeyer H. Body weight, insulin resistance, and serum adipokine levels 2 years after 2 types of bariatric surgery. Am J Med 2009; 122:435-42. [PMID: 19375553 PMCID: PMC2757753 DOI: 10.1016/j.amjmed.2008.10.035] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2008] [Revised: 10/02/2008] [Accepted: 10/07/2008] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Bariatric surgery reverses obesity-related comorbidities, including type 2 diabetes mellitus. Several studies have already described differences in anthropometrics and body composition in patients undergoing Roux-en-Y gastric bypass compared with laparoscopic adjustable gastric banding, but the role of adipokines in the outcomes after the different types of surgery is not known. Differences in weight loss and reversal of insulin resistance exist between the 2 groups and correlate with changes in adipokines. METHODS Fifteen severely obese women (mean body mass index [BMI]: 46.7 kg/m(2)) underwent 2 types of laparoscopic weight loss surgery (Roux-en-Y gastric bypass=10, adjustable gastric banding=5). Weight, waist and hip circumference, body composition, plasma metabolic markers, and lipids were measured at set intervals during a 24-month period after surgery. RESULTS At 24 months, patients who underwent Roux-en-Y were overweight (BMI 29.7 kg/m(2)), whereas patients who underwent gastric banding remained obese (BMI 36.3 kg/m(2)). Patients who underwent Roux-en-Y lost significantly more fat mass than patients who underwent gastric banding (mean difference 16.8 kg, P<.05). Likewise, leptin levels were lower in the patients who underwent Roux-en-Y (P=.003), and levels correlated with weight loss, loss of fat mass, insulin levels, and Homeostasis Model of Assessment 2. Adiponectin correlated with insulin levels and Homeostasis Model of Assessment 2 (r=-0.653, P=.04 and r=-0.674, P=.032, respectively) in the patients who underwent Roux-en-Y at 24 months. CONCLUSION After 2 years, weight loss and normalization of metabolic parameters were less pronounced in patients who underwent gastric banding compared with patients who underwent Roux-en-Y gastric bypass. Our findings require confirmation in a prospective randomized trial.
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Affiliation(s)
- Michael A Trakhtenbroit
- Department of Internal Medicine, Division of Cardiology, University of Texas Medical School at Houston, University of Texas Health Science Center at Houston, TX 77030, USA
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Chen J, Raymond K. Beta-glucans in the treatment of diabetes and associated cardiovascular risks. Vasc Health Risk Manag 2009; 4:1265-72. [PMID: 19337540 PMCID: PMC2663451 DOI: 10.2147/vhrm.s3803] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Diabetes mellitus is characterized by high blood glucose level with typical manifestations of thirst, polyuria, polydipsia, and weight loss. It is caused by defects in insulin-mediated signal pathways, resulting in decreased glucose transportation from blood into muscle and fat cells. The major risk is vascular injury leading to heart disease, which is accelerated by increased lipid levels and hypertension. Management of diabetes includes: control of blood glucose level and lipids; and reduction of hypertension. Dietary intake of beta-glucans has been shown to reduce all these risk factors to benefit the treatment of diabetes and associated complications. In addition, beta-glucans also promote wound healing and alleviate ischemic heart injury. However, the mechanisms behind the effect of beta-glucans on diabetes and associated complications need to be further studied using pure beta-glucan.
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Affiliation(s)
- Jiezhong Chen
- John Curtin School of Medical Research, Australian National University, Acton, ACT, Australia.
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Intestinally derived lipids: Metabolic regulation and consequences—An overview. ATHEROSCLEROSIS SUPP 2008; 9:63-8. [DOI: 10.1016/j.atherosclerosissup.2008.05.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2008] [Revised: 04/03/2008] [Accepted: 05/13/2008] [Indexed: 01/17/2023]
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Faraj M, Beauregard G, Tardif A, Loizon E, Godbout A, Cianflone K, Vidal H, Rabasa-Lhoret R. Regulation of leptin, adiponectin and acylation-stimulating protein by hyperinsulinaemia and hyperglycaemia in vivo in healthy lean young men. DIABETES & METABOLISM 2008; 34:334-42. [DOI: 10.1016/j.diabet.2008.01.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Revised: 01/18/2008] [Accepted: 01/25/2008] [Indexed: 10/21/2022]
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