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Dong G, Boothe K, He L, Shi Y, McCluskey LP. Altered peripheral taste function in a mouse model of inflammatory bowel disease. Sci Rep 2023; 13:18895. [PMID: 37919307 PMCID: PMC10622515 DOI: 10.1038/s41598-023-46244-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023] Open
Abstract
Increased sugar intake and taste dysfunction have been reported in patients with inflammatory bowel disease (IBD), a chronic disorder characterized by diarrhea, pain, weight loss and fatigue. It was previously unknown whether taste function changes in mouse models of IBD. Mice consumed dextran sodium sulfate (DSS) during three 7-day cycles to induce chronic colitis. DSS-treated mice displayed signs of disease, including significant weight loss, diarrhea, loss of colon architecture, and inflammation of the colon. After the last DSS cycle we assessed taste function by recording electrophysiological responses from the chorda tympani (CT) nerve, which transmits activity from lingual taste buds to the brain. DSS treatment significantly reduced neural taste responses to natural and artificial sweeteners. Responses to carbohydrate, salt, sour or bitter tastants were unaffected in mice with colitis, but umami responses were modestly elevated. DSS treatment modulated the expression of receptor subunits that transduce sweet and umami stimuli in oral taste buds as a substrate for functional changes. Dysregulated systemic cytokine responses or dysbiosis that occurs during chronic colitis may be upstream from changes in oral taste buds. We demonstrate for the first time that colitis alters taste input to the brain, which could exacerbate malnutrition in IBD patients.
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Affiliation(s)
- Guangkuo Dong
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th Street/CA-3016, Augusta, GA, 30912, USA
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Khaylie Boothe
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th Street/CA-3016, Augusta, GA, 30912, USA
| | - Lianying He
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th Street/CA-3016, Augusta, GA, 30912, USA
| | - Yang Shi
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th Street/CA-3016, Augusta, GA, 30912, USA
- Division of Biostatistics and Data Science, Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Lynnette Phillips McCluskey
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, 1120 15th Street/CA-3016, Augusta, GA, 30912, USA.
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2
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Dong G, Boothe K, He L, Shi Y, McCluskey LP. Altered peripheral taste function in a mouse model of inflammatory bowel disease. RESEARCH SQUARE 2023:rs.3.rs-3304297. [PMID: 37720020 PMCID: PMC10503843 DOI: 10.21203/rs.3.rs-3304297/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Increased sugar intake and taste dysfunction have been reported in patients with inflammatory bowel disease (IBD), a chronic disorder characterized by diarrhea, pain, weight loss and fatigue. It was previously unknown whether taste function changes in mouse models of IBD. Mice consumed dextran sodium sulfate (DSS) during three 7-day cycles to induce chronic colitis. DSS-treated mice displayed signs of disease, including significant weight loss, diarrhea, loss of colon architecture, and inflammation of the colon. After the last DSS cycle we assessed taste function by recording electrophysiological responses from the chorda tympani (CT) nerve, which transmits activity from lingual taste buds to the brain. DSS treatment significantly reduced neural taste responses to natural and artificial sweeteners. Responses to carbohydrate, salt, sour or bitter tastants were unaffected in mice with colitis, but umami responses were modestly elevated. DSS treatment modulated the expression of receptor subunits that transduce sweet and umami stimuli in oral taste buds as a substrate for functional changes. Dysregulated systemic cytokine responses, or dysbiosis that occurs during chronic colitis may be upstream from changes in oral taste buds. We demonstrate for the first time that colitis alters taste input to the brain, which could exacerbate malnutrition in IBD patients.
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3
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Bretón I, Ballesteros-Pomar MD, Calle-Pascual A, Alvarez-Sala LA, Rubio-Herrera MA. Micronutrients in Pregnancy after Bariatric Surgery: A Narrative Review. J Clin Med 2023; 12:5429. [PMID: 37629473 PMCID: PMC10455502 DOI: 10.3390/jcm12165429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Bariatric surgery is increasingly used in women of childbearing age due to the rising prevalence of obesity and the effectiveness and availability of this treatment. Pregnancy in women with previous bariatric surgery deserves special attention. Weight loss induced by surgery reduces the risks that obesity poses to pregnancy. But on the other hand, decreased intake and malabsorption may increase the risk of malnutrition and micronutrient deficiency and negatively affect maternal and foetal health. The aim of this narrative review is to provide an updated analysis of the impact of different bariatric surgery techniques on mineral and micronutrient nutritional status during pregnancy and the possible effect on maternal-foetal health.
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Affiliation(s)
- Irene Bretón
- Department of Endocrinology and Nutrition, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, 28007 Madrid, Spain
- Department of Medicine, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
| | - María D. Ballesteros-Pomar
- Department of Endocrinology and Nutrition, Complejo Asistencial Universitario de León, 24008 León, Spain
| | - Alfonso Calle-Pascual
- Department of Medicine, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Clínico Universitario San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Luis Antonio Alvarez-Sala
- Department of Medicine, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
- Department of Internal Medicine, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain
| | - Miguel Angel Rubio-Herrera
- Department of Medicine, Facultad de Medicina, Universidad Complutense, 28040 Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Clínico Universitario San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, 28040 Madrid, Spain
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Lee SH, Ko HM, Jee W, Kim H, Chung WS, Jang HJ. Isosinensetin Stimulates Glucagon-like Peptide-1 Secretion via Activation of hTAS2R50 and the G βγ-Mediated Signaling Pathway. Int J Mol Sci 2023; 24:ijms24043682. [PMID: 36835092 PMCID: PMC9959872 DOI: 10.3390/ijms24043682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Bitter taste receptors (TAS2Rs) are G protein-coupled receptors localized in the taste buds of the tongue. They may also be present in non-lingual organs, including the brain, lung, kidney, and gastrointestinal (GI) tract. Recent studies on bitter taste receptor functions have suggested TAS2Rs as potential therapeutic targets. The human bitter taste receptor subtype hTAS2R50 responds to its agonist isosinensetin (ISS). Here, we demonstrated that, unlike other TAS2R agonists, isosinensetin activated hTAS2R50 as well as increased Glucagon-like peptide 1 (GLP-1) secretion through the Gβγ-mediated pathway in NCI-H716 cells. To confirm this mechanism, we showed that ISS increased intracellular Ca2+ and was suppressed by the IP3R inhibitor 2-APB as well as the PLC inhibitor U73122, suggesting that TAS2Rs alters the physiological state of enteroendocrine L cells in a PLC-dependent manner. Furthermore, we demonstrated that ISS upregulated proglucagon mRNA and stimulated GLP-1 secretion. ISS-mediated GLP-1 secretion was suppressed in response to small interfering RNA-mediated silencing of Gα-gust and hTAS2R50 as well as 2-APB and U73122. Our findings improved the understanding of how ISS modulates GLP-1 secretion and indicates the possibility of using ISS as a therapeutic agent in the treatment of diabetes mellitus.
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Affiliation(s)
- Seung-Hyeon Lee
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyun Min Ko
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wona Jee
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyungsuk Kim
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Won-Seok Chung
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyeung-Jin Jang
- College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Correspondence:
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Geisler CE, Antonellis MP, Trumbauer W, Martin JA, Coskun T, Samms RJ, Hayes MR. Tirzepatide suppresses palatable food intake by selectively reducing preference for fat in rodents. Diabetes Obes Metab 2023; 25:56-67. [PMID: 36054312 PMCID: PMC10362946 DOI: 10.1111/dom.14843] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/04/2022] [Accepted: 08/13/2022] [Indexed: 12/14/2022]
Abstract
AIM To investigate the role of glucose-dependent insulinotropic polypeptide receptor (GIPR) agonists alone or combined with glucagon-like peptide-1 receptor (GLP-1R) agonists to regulate palatable food intake and the role of specific macronutrients in these preferences. METHODS To understand this regulation, we treated mice and rats on several choice diet paradigms of chow and a palatable food option with individual or dual GIPR and GLP-1R agonists. RESULTS In mice, the dual agonist tirzepatide suppressed total caloric intake, while promoting the intake of chow over a high fat/sucrose diet. Surprisingly, GIPR agonism alone did not alter food choice. The food intake shift observed with tirzepatide in wild-type mice was completely absent in GLP-1R knockout mice, suggesting that GIPR signalling does not regulate food preference. Tirzepatide also selectively suppressed the intake of palatable food but not chow in a rat two-diet choice model. This suppression was specific to lipids, as GLP-1R agonist and dual agonist treatment in rats on a choice paradigm assessing individual palatable macronutrients robustly inhibited the intake of Crisco (lipid) without decreasing the intake of a sucrose (carbohydrate) solution. CONCLUSIONS Decreasing preference for high-caloric, high-fat foods is a powerful action of GLP-1R and dual GIPR/GLP-1R agonist therapeutics, which may contribute to the weight loss success of these drugs.
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Affiliation(s)
| | - Meghan P. Antonellis
- Diabetes, Obesity and Complications, Lilly Research Laboratories, Eli Lilly and Company
| | | | - Jennifer A. Martin
- Diabetes, Obesity and Complications, Lilly Research Laboratories, Eli Lilly and Company
| | - Tamer Coskun
- Diabetes, Obesity and Complications, Lilly Research Laboratories, Eli Lilly and Company
| | - Ricardo J. Samms
- Diabetes, Obesity and Complications, Lilly Research Laboratories, Eli Lilly and Company
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Ribeiro G, Torres S, Fernandes AB, Camacho M, Branco TL, Martins SS, Raimundo A, Oliveira-Maia AJ. Enhanced sweet taste perception in obesity: Joint analysis of gustatory data from multiple studies. Front Nutr 2022; 9:1028261. [PMID: 36606228 PMCID: PMC9807659 DOI: 10.3389/fnut.2022.1028261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction While sweet taste perception is a potential determinant of feeding behavior in obesity, the supporting evidence is inconsistent and is typically associated with methodological limitations. Notably, possible associations between sweet taste perception and measures of food reward remain undetermined. Materials and methods We conducted a cross-sectional analysis comparing 246 individuals with severe obesity and 174 healthy volunteers using a validated method for taste perception assessment. We included gustatory variables, namely intensity and pleasantness ratings of sour, salt, sweet, and bitter tastants, and taste thresholds assessed by electrogustometry. Reward-related feeding behavior, including hedonic hunger, food addiction, feeding behavior traits, and acceptance of foods and alcohol, was evaluated using self-rated scales for comparison with gustatory measures. Result In logistic regressions adjusted for age, gender, educational level, and research center, we found that a greater likelihood of belonging to the obesity group was associated with higher sweet intensity ratings (OR = 1.4, P = 0.01), hedonic hunger, food addiction symptoms, restrained and emotional eating (1.7 < OR ≤ 4.6, all P ≤ 0.001), and lower alcohol acceptance (OR = 0.6, P = 0.0002). Using principal component analysis, we found that while hedonic hunger, food addiction, and emotional eating were strongly interrelated, they were not associated with sweet intensity perception that, in turn, had a closer relationship with alcohol acceptance and restrained eating. Conclusion We found that individuals with obesity report higher sweet taste intensity ratings than healthy controls. Furthermore, while psychological measures of reward-related feeding behavior assess a common construct, sweet intensity perception may represent a different obesity-related dimension.
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Affiliation(s)
- Gabriela Ribeiro
- Champalimaud Research and Clinical Centre, Champalimaud Foundation, Lisbon, Portugal,Lisbon Academic Medical Centre PhD Program, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Sandra Torres
- Faculdade de Psicologia e de Ciências da Educação, Universidade do Porto, Porto, Portugal,Centro de Psicologia da Universidade do Porto, Porto, Portugal
| | - Ana B. Fernandes
- Champalimaud Research and Clinical Centre, Champalimaud Foundation, Lisbon, Portugal,NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Marta Camacho
- Champalimaud Research and Clinical Centre, Champalimaud Foundation, Lisbon, Portugal
| | - Teresa L. Branco
- Exercise and Health Laboratory, CIPER, Faculdade de Medicina da Universidade de Lisboa, Cruz Quebrada, Portugal
| | - Sandra S. Martins
- Universidade Europeia, Lisbon, Portugal,Instituto de Saúde Ambiental (ISAMB), Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal
| | - Armando Raimundo
- Departamento de Desporto e Saúde, Escola de Saúde e Desenvolvimento Humano, Universidade de Évora, Évora, Portugal,Comprehensive Health Research Centre (CHRC), Universidade de Évora, Évora, Portugal
| | - Albino J. Oliveira-Maia
- Champalimaud Research and Clinical Centre, Champalimaud Foundation, Lisbon, Portugal,NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisbon, Portugal,*Correspondence: Albino J. Oliveira-Maia,
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Ribeiro FM, Silva MA, Lyssa V, Marques G, Lima HK, Franco OL, Petriz B. The molecular signaling of exercise and obesity in the microbiota-gut-brain axis. Front Endocrinol (Lausanne) 2022; 13:927170. [PMID: 35966101 PMCID: PMC9365995 DOI: 10.3389/fendo.2022.927170] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity is one of the major pandemics of the 21st century. Due to its multifactorial etiology, its treatment requires several actions, including dietary intervention and physical exercise. Excessive fat accumulation leads to several health problems involving alteration in the gut-microbiota-brain axis. This axis is characterized by multiple biological systems generating a network that allows bidirectional communication between intestinal bacteria and brain. This mutual communication maintains the homeostasis of the gastrointestinal, central nervous and microbial systems of animals. Moreover, this axis involves inflammatory, neural, and endocrine mechanisms, contributes to obesity pathogenesis. The axis also acts in appetite and satiety control and synthesizing hormones that participate in gastrointestinal functions. Exercise is a nonpharmacologic agent commonly used to prevent and treat obesity and other chronic degenerative diseases. Besides increasing energy expenditure, exercise induces the synthesis and liberation of several muscle-derived myokines and neuroendocrine peptides such as neuropeptide Y, peptide YY, ghrelin, and leptin, which act directly on the gut-microbiota-brain axis. Thus, exercise may serve as a rebalancing agent of the gut-microbiota-brain axis under the stimulus of chronic low-grade inflammation induced by obesity. So far, there is little evidence of modification of the gut-brain axis as a whole, and this narrative review aims to address the molecular pathways through which exercise may act in the context of disorders of the gut-brain axis due to obesity.
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Affiliation(s)
- Filipe M. Ribeiro
- Post-Graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
| | - Maycon A. Silva
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
| | - Victória Lyssa
- Laboratory of Molecular Analysis, Graduate Program of Sciences and Technology of Health, University of Brasilia, Brasilia, Brazil
| | - Gabriel Marques
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
| | - Henny K. Lima
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
| | - Octavio L. Franco
- Post-Graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- S-Inova Biotech, Catholic University Dom Bosco, Biotechnology Program, Campo Grande, Brazil
| | - Bernardo Petriz
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
- Postgraduate Program in Rehabilitation Sciences - University of Brasília, Brasília, Brazil
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Chen L, Yang Y, Sun S, Xie Y, Pan C, Li M, Li C, Liu Y, Xu Z, Liu W, Ji M. Indolepropionic acid reduces obesity‐induced metabolic dysfunction through colonic barrier restoration mediated via tuft cell‐derived IL‐25. FEBS J 2022; 289:5985-6004. [DOI: 10.1111/febs.16470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 04/06/2022] [Accepted: 05/03/2022] [Indexed: 12/19/2022]
Affiliation(s)
- Lu Chen
- Department of Pathogen Biology Nanjing Medical University China
- Jiangsu Province Engineering Research Center of Antibody Drug Nanjing China
| | - Yuxuan Yang
- Department of Pathogen Biology Nanjing Medical University China
| | - Siyu Sun
- Department of Pathogen Biology Nanjing Medical University China
| | - Yuan Xie
- Department of Endocrinology Sir Run Run Hospital Nanjing Medical University China
| | - Cailong Pan
- Department of Pathology School of Basic Medicine Nanjing Medical University China
| | - Maining Li
- Department of Pathogen Biology Nanjing Medical University China
| | - Chen Li
- Department of Pathogen Biology Nanjing Medical University China
| | - Yu Liu
- Department of Endocrinology Sir Run Run Hospital Nanjing Medical University China
| | - Zhipeng Xu
- Department of Pathogen Biology Nanjing Medical University China
| | - Wentao Liu
- Department of Pharmacology School of Basic Medicine Nanjing Medical University China
| | - Minjun Ji
- Department of Pathogen Biology Nanjing Medical University China
- Jiangsu Province Engineering Research Center of Antibody Drug Nanjing China
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9
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Frühbeck G, Becerril S, Martín M, Ramírez B, Valentí V, Moncada R, Catalán V, Gómez-Ambrosi J, Silva C, Burrell MA, Escalada J, Rodríguez A. High plasma and lingual uroguanylin as potential contributors to changes in food preference after sleeve gastrectomy. Metabolism 2022; 128:155119. [PMID: 34990711 DOI: 10.1016/j.metabol.2021.155119] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/25/2021] [Accepted: 12/27/2021] [Indexed: 01/15/2023]
Abstract
BACKGROUND The biological mediators supporting long-term weight loss and changes in dietary choice behaviour after sleeve gastrectomy remain unclear. Guanylin and uroguanylin are gut hormones involved in the regulation of satiety, food preference and adiposity. Thus, we sought to analyze whether the guanylin system is involved in changes in food preference after sleeve gastrectomy in obesity. METHODS Proguanylin (GUCA2A) and prouroguanylin (GUCA2B) were determined in patients with severe obesity (n = 41) as well as in rats with diet-induced obesity (n = 48), monogenic obesity (Zucker fa/fa) (n = 18) or in a food choice paradigm (normal diet vs high-fat diet) (n = 16) submitted to sleeve gastrectomy. Lingual distribution and expression of guanylins (GUCA2A and GUCA2B) and their receptor GUCY2C as well as the fatty acid receptor CD36 were evaluated in the preclinical models. RESULTS Circulating concentrations of GUCA2A and GUCA2B were increased after sleeve gastrectomy in patients with severe obesity as well as in rats with diet-induced and monogenic (fa/fa) obesity. Interestingly, the lower dietary fat preference observed in obese rats under the food choice paradigm as well as in patients with obesity after sleeve gastrectomy were negatively associated with post-surgical GUCA2B levels. Moreover, sleeve gastrectomy upregulated the low expression of GUCA2A and GUCA2B in taste bud cells of tongues from rats with diet-induced and monogenic (fa/fa) obesity in parallel to a downregulation of the lingual lipid sensor CD36. CONCLUSIONS The increased circulating and lingual GUCA2B after sleeve gastrectomy suggest an association between the uroguanylin-GUCY2C endocrine axis and food preference through the regulation of gustatory responses.
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Affiliation(s)
- Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain.
| | - Sara Becerril
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Marina Martín
- Department of Pathology, Anatomy and Physiology, University of Navarra, Pamplona, Spain
| | - Beatriz Ramírez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Víctor Valentí
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Rafael Moncada
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Anesthesia, Clínica Universidad de Navarra, Pamplona, Spain
| | - Victoria Catalán
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Javier Gómez-Ambrosi
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Camilo Silva
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - María A Burrell
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Pathology, Anatomy and Physiology, University of Navarra, Pamplona, Spain
| | - Javier Escalada
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain; Department of Endocrinology and Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Amaia Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Pamplona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Spain; Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
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Jensterle M, Ferjan S, Vovk A, Battelino T, Rizzo M, Janež A. Semaglutide reduces fat accumulation in the tongue: A randomized single-blind, pilot study. Diabetes Res Clin Pract 2021; 178:108935. [PMID: 34217774 DOI: 10.1016/j.diabres.2021.108935] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/15/2021] [Accepted: 06/19/2021] [Indexed: 12/01/2022]
Abstract
AIM We evaluated the effect of the latest GLP-1 RA semaglutide on tongue fat storage in obese women. DESIGN We conducted a randomized single-blind, pilot study. METHODS Twenty-five obese women with polycystic ovary syndrome (PCOS) (33.7 ± 5.3 years, body mass index (BMI) 36.1 ± 3.9 kg/m2, mean ± SD) were randomized to semaglutide 1.0 mg or placebo for 16 weeks. We quantified tongue volume and its fat tissue and fat proportion by magnetic resonance imaging. RESULTS Tongue fat tissue and fat proportion significantly reduced after semaglutide vs placebo (-1.94 ± 5.51 vs. + 3.12 ± 4.87 cm3, p = 0.022, and -0.02 ± 0.07 vs. 0.04 ± 0.06, p = 0.010, respectively). Correlation analysis revealed that these reductions were associated with those in body weight, BMI and waist circumference (p = 0.010 for all). CONCLUSIONS This is the first study confirming the beneficial effect of semaglutide on tongue structure in obese women with PCOS. Further studies are needed to assess the clinical importance of such findings.
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Affiliation(s)
- Mojca Jensterle
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Simona Ferjan
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Andrej Vovk
- Center for Clinical Physiology, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Tadej Battelino
- Department of Pediatrics, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Manfredi Rizzo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (Promise), University of Palermo, Italy
| | - Andrej Janež
- Department of Endocrinology, Diabetes and Metabolic Diseases, University Medical Centre Ljubljana, Faculty of Medicine, University of Ljubljana, Slovenia.
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11
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Jensterle M, Ferjan S, Battelino T, Kovač J, Battelino S, Šuput D, Vovk A, Janež A. Does intervention with GLP-1 receptor agonist semaglutide modulate perception of sweet taste in women with obesity: study protocol of a randomized, single-blinded, placebo-controlled clinical trial. Trials 2021; 22:464. [PMID: 34281590 PMCID: PMC8287101 DOI: 10.1186/s13063-021-05442-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/09/2021] [Indexed: 11/30/2022] Open
Abstract
Background Preclinical studies demonstrated that glucagon-like peptide 1 (GLP-1) is locally synthesized in taste bud cells and that GLP-1 receptor exists on the gustatory nerves in close proximity to GLP-1-containing taste bud cells. This local paracrine GLP-1 signalling seems to be specifically involved in the perception of sweets. However, the role of GLP-1 in taste perception remains largely unaddressed in clinical studies. Whether any weight-reducing effects of GLP-1 receptor agonists are mediated through the modulation of taste perception is currently unknown. Methods and analysis This is an investigator-initiated, randomized single-blind, placebo-controlled clinical trial. We will enrol 30 women with obesity and polycystic ovary syndrome (PCOS). Participants will be randomized in a 1:1 ratio to either semaglutide 1.0 mg or placebo for 16 weeks. The primary endpoints are alteration of transcriptomic profile of tongue tissue as changes in expression level from baseline to follow-up after 16 weeks of treatment, measured by RNA sequencing, and change in taste sensitivity as detected by chemical gustometry. Secondary endpoints include change in neural response to visual food cues and to sweet-tasting substances as assessed by functional MRI, change in body weight, change in fat mass and change in eating behaviour and food intake. Discussion This is the first study to investigate the role of semaglutide on taste perception, along with a neural response to visual food cues in reward processing regions. The study may identify the tongue and the taste perception as a novel target for GLP-1 receptor agonists. Ethics and disseminations The study has been approved by the Slovene National Medical Ethics Committee and will be conducted in accordance with the Declaration of Helsinki and Good Clinical Practice guidelines. Results will be submitted for publication in an international peer-reviewed scientific journal. Trial registration ClinicalTrials.govNCT04263415. Retrospectively registered on 10 February 2020 Supplementary Information The online version contains supplementary material available at 10.1186/s13063-021-05442-y.
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Affiliation(s)
- Mojca Jensterle
- Department of Endocrinology, Diabetes and Metabolic Diseases, Division of Internal Medicine, University Medical Centre Ljubljana, Zaloška cesta 7, SI-1000, Ljubljana, Slovenia.,Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia
| | - Simona Ferjan
- Department of Endocrinology, Diabetes and Metabolic Diseases, Division of Internal Medicine, University Medical Centre Ljubljana, Zaloška cesta 7, SI-1000, Ljubljana, Slovenia.,Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia
| | - Tadej Battelino
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia.,Department of Endocrinology, Diabetes and Metabolism, University Children's Hospital, University Medical Centre Ljubljana, Bohoričeva 20, SI-1000, Ljubljana, Slovenia
| | - Jernej Kovač
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia.,Department of Endocrinology, Diabetes and Metabolism, University Children's Hospital, University Medical Centre Ljubljana, Bohoričeva 20, SI-1000, Ljubljana, Slovenia
| | - Saba Battelino
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia.,Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, Zaloška cesta 2, SI-1000, Ljubljana, Slovenia
| | - Dušan Šuput
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia
| | - Andrej Vovk
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia
| | - Andrej Janež
- Department of Endocrinology, Diabetes and Metabolic Diseases, Division of Internal Medicine, University Medical Centre Ljubljana, Zaloška cesta 7, SI-1000, Ljubljana, Slovenia. .,Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000, Ljubljana, Slovenia.
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