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Chen L, Xue S, Dai B, Wang Y, Zhao H. Sucrose Osmotic Self-Oscillation Drives Membrane Permeability. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7557-7565. [PMID: 37133208 DOI: 10.1021/acs.jafc.3c00794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Molecular permeation through phospholipid membranes is a fundamental biological process for small molecules. Sucrose is one of the most widely used sweeteners and a key factor in the pathogenesis of obesity and diabetes, yet a detailed understanding of its mechanism involved in permeability into phospholipid membranes is still lacking. Here, using giant unimolecular vesicles (GUVs) reconstituting membrane properties, we compared the osmotic behavior of sucrose in GUVs and HepG2 cells to explore the effect of sucrose on membrane stability in the absence of protein enhancers. The results suggested that the particle size and potential of GUVs and the cellular membrane potential changed significantly with increasing the sucrose concentration (p < 0.05). In microscopic images of cells containing GUVs and sucrose, the fluorescence intensity of vesicles was 537 ± 17.69 after 15 min, and the value was significantly higher than that of microscopic images of cells without sucrose addition (p < 0.05). These changes suggested that the permeability of the phospholipid membrane became larger under a sucrose environment. This study provides a theoretical basis for better insight on the role of sucrose in the physiological environment.
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Affiliation(s)
- Lichun Chen
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China
- Laboratory of Physical Chemistry and Soft Matter, Wageningen University and Research, 6708 WE Wageningen, Netherlands
| | - Songwen Xue
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Binhao Dai
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Yifei Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Huimin Zhao
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, People's Republic of China
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Miguéns‐Gómez A, Sierra‐Cruz M, Segú H, Beltrán‐Debón R, Rodríguez‐Gallego E, Terra X, Blay MT, Pérez‐Vendrell AM, Pinent M, Ardévol A. Administration of Alphitobius diaperinus or Tenebrio molitor before meals transiently increases food intake through enterohormone regulation in female rats. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1660-1667. [PMID: 36324158 PMCID: PMC10099498 DOI: 10.1002/jsfa.12305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/11/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND It has been previously shown that acutely administered insect Alphitobius diaperinus protein increases food intake in rats and modifies the ex vivo enterohormone secretory profile differently than beef or almond proteins. In this study, we aimed to evaluate whether these effects could be maintained for a longer period and determine the underlying mechanisms. RESULTS We administered two different insect species to rats for 26 days and measured food intake at different time points. Both insect species increased food intake in the first week, but the effect was later lost. Glucagon-like peptide 1 (GLP-1) and ghrelin were measured in plasma and ex vivo, and no chronic effects on their secretion or desensitization were found. Nevertheless, digested A. diaperinus acutely modified GLP-1 and ghrelin secretion ex vivo. CONCLUSION Our results suggest that increases in food intake could be explained by a local ghrelin reduction acting in the small intestine. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Alba Miguéns‐Gómez
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Marta Sierra‐Cruz
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Helena Segú
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Raúl Beltrán‐Debón
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Esther Rodríguez‐Gallego
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Ximena Terra
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Maria Teresa Blay
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | | | - Montserrat Pinent
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
| | - Anna Ardévol
- Departament de Bioquímica i BiotecnologiaMoBioFood Research Group, Universitat Rovira i VirgiliTarragonaSpain
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BAYINDIR GÜMÜŞ A, KESER A, TUNÇER E, ALTUNTAŞ YILDIZ T, KEPENEKCİ BAYRAM İ. Sakarinin İştah, Enerji Alımı ve Serum Ghrelin Üzerinde Etkisi Var mı? Sağlıklı Erkeklerde Randomize, Kontrollü, Çapraz Bir Çalışma. KONURALP TIP DERGISI 2022. [DOI: 10.18521/ktd.1057978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Amaç: Günümüzde şeker yerine enerji içermeyen yapay tatlandırıcılar yaygın olarak kullanılmaktadır. Ancak bilinenin aksine yapay tatlandırıcıların metabolizmayı çeşitli yönlerden etkilediği düşünülmektedir. Bu çalışmanın amacı sakarinin serum ghrelin düzeyi, iştah ve besin tüketimi üzerindeki etkilerini değerlendirmektir.
Metod: Randomize, kontrollü ve çapraz olarak yapılan çalışmaya 20-29 yaşları arasında dokuz sağlıklı erkek katılmıştır. Her katılımcıya 300 ml su, 75 gram sakaroz içeren 300 ml su ve 240 miligram sakarin içeren 300 ml su verilmiştir. Başlangıç, 30., 60., 90., 120. ve 180. dakikalarda iştahı değerlendirmek için Görsel Analog Skala uygulanmış ve ghrelin analizi için kan örnekleri alınmıştır. Yüzsekseninci sonra katılımcılar ad libitum beslenmişler ve her uygulama günün sonuna kadar 24 saatlik diyet besin tüketim kaydı tutmuşlardır.
Bulgular: Altmışıncı ve 120. dakikalarda sadece su ve sakarinli içeceklerde ortalama ghrelin düzeyi sükroz içeren içeceğe kıyasla daha yüksektir (p
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Affiliation(s)
| | - Alev KESER
- ANKARA ÜNİVERSİTESİ, SAĞLIK BİLİMLERİ FAKÜLTESİ, BESLENME VE DİYETETİK BÖLÜMÜ
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4
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Sambra V, Vicuña IA, Priken KM, Luna SL, Allendes DA, Godoy PM, Novik V, Vega CA. Acute responses of stevia and d-tagatose intake on metabolic parameters and appetite/satiety in insulin resistance. Clin Nutr ESPEN 2022; 49:217-224. [DOI: 10.1016/j.clnesp.2022.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 10/18/2022]
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Nunez-Salces M, Li H, Young RL, Page AJ. The secretion of total and acyl ghrelin from the mouse gastric mucosa: Role of nutrients and the lipid chemosensors FFAR4 and CD36. Peptides 2021; 146:170673. [PMID: 34627956 DOI: 10.1016/j.peptides.2021.170673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
AIMS This study investigated the nutrient-mediated modulation of total ghrelin (TG) and acyl ghrelin (AG) secretion from the mouse gastric mucosa, and the role of long-chain fatty acid chemosensors, FFAR4 and CD36, in lipid-mediated modulation of TG and AG release. METHODS Ex-vivo experiments were conducted using mouse gastric mucosa to examine the effects of nutrients (D-glucose, L-phenylalanine, peptone (mixture of oligopeptides & single amino acids), D-mannitol, α-linolenic acid and fat emulsion (intralipid)) on TG and AG secretion. Additionally, inhibition of FFAR4 and CD36 on α-linolenic acid and intralipid-mediated regulation of TG and AG secretion was assessed. RESULTS TG and AG secretion were unaffected by glucose and D-mannitol. Peptone stimulated the release of TG and AG. In contrast, L-phenylalanine reduced AG secretion only. Intralipid reduced TG secretion and stimulated AG secretion, and α-linolenic acid reduced AG release, without affecting TG mobilisation. Modulation of ghrelin secretion by lipids occurred in an FFAR4 and CD36-independent manner. CONCLUSION Ghrelin secretion is modulated in a nutrient-specific manner by proteins and lipids, with TG and AG displaying independent responses to the same stimuli. In addition, FFAR4 and CD36 do not participate in modulation of TG and AG secretion by α-linolenic acid and intralipid.
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Affiliation(s)
- Maria Nunez-Salces
- Vagal Afferent Research Group, Australia; Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, 5005, Australia; Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
| | - Hui Li
- Vagal Afferent Research Group, Australia; Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, 5005, Australia; Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
| | - Richard L Young
- Intestinal Nutrient Sensing Group, Australia; Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, 5005, Australia; Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
| | - Amanda J Page
- Vagal Afferent Research Group, Australia; Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, 5005, Australia; Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia.
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6
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von Molitor E, Riedel K, Krohn M, Hafner M, Rudolf R, Cesetti T. Sweet Taste Is Complex: Signaling Cascades and Circuits Involved in Sweet Sensation. Front Hum Neurosci 2021; 15:667709. [PMID: 34239428 PMCID: PMC8258107 DOI: 10.3389/fnhum.2021.667709] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/20/2021] [Indexed: 12/13/2022] Open
Abstract
Sweetness is the preferred taste of humans and many animals, likely because sugars are a primary source of energy. In many mammals, sweet compounds are sensed in the tongue by the gustatory organ, the taste buds. Here, a group of taste bud cells expresses a canonical sweet taste receptor, whose activation induces Ca2+ rise, cell depolarization and ATP release to communicate with afferent gustatory nerves. The discovery of the sweet taste receptor, 20 years ago, was a milestone in the understanding of sweet signal transduction and is described here from a historical perspective. Our review briefly summarizes the major findings of the canonical sweet taste pathway, and then focuses on molecular details, about the related downstream signaling, that are still elusive or have been neglected. In this context, we discuss evidence supporting the existence of an alternative pathway, independent of the sweet taste receptor, to sense sugars and its proposed role in glucose homeostasis. Further, given that sweet taste receptor expression has been reported in many other organs, the physiological role of these extraoral receptors is addressed. Finally, and along these lines, we expand on the multiple direct and indirect effects of sugars on the brain. In summary, the review tries to stimulate a comprehensive understanding of how sweet compounds signal to the brain upon taste bud cells activation, and how this gustatory process is integrated with gastro-intestinal sugar sensing to create a hedonic and metabolic representation of sugars, which finally drives our behavior. Understanding of this is indeed a crucial step in developing new strategies to prevent obesity and associated diseases.
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Affiliation(s)
- Elena von Molitor
- Institute of Molecular and Cell Biology, Hochschule Mannheim, Mannheim, Germany
| | | | | | - Mathias Hafner
- Institute of Molecular and Cell Biology, Hochschule Mannheim, Mannheim, Germany
| | - Rüdiger Rudolf
- Institute of Molecular and Cell Biology, Hochschule Mannheim, Mannheim, Germany.,Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| | - Tiziana Cesetti
- Institute of Molecular and Cell Biology, Hochschule Mannheim, Mannheim, Germany
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Nunez‐Salces M, Li H, Feinle‐Bisset C, Young RL, Page AJ. The regulation of gastric ghrelin secretion. Acta Physiol (Oxf) 2021; 231:e13588. [PMID: 33249751 DOI: 10.1111/apha.13588] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022]
Abstract
Ghrelin is a gastric hormone with multiple physiological functions, including the stimulation of food intake and adiposity. It is well established that circulating ghrelin levels are closely associated with feeding patterns, rising strongly before a meal and lowering upon food intake. However, the mechanisms underlying the modulation of ghrelin secretion are not fully understood. The purpose of this review is to discuss current knowledge on the circadian oscillation of circulating ghrelin levels, the neural mechanisms stimulating fasting ghrelin levels and peripheral mechanisms modulating postprandial ghrelin levels. Furthermore, the therapeutic potential of targeting the ghrelin pathway is discussed in the context of the treatment of various metabolic disorders, including obesity, type 2 diabetes, diabetic gastroparesis and Prader-Willi syndrome. Moreover, eating disorders including anorexia nervosa, bulimia nervosa and binge-eating disorder are also discussed.
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Affiliation(s)
- Maria Nunez‐Salces
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
| | - Hui Li
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
| | - Christine Feinle‐Bisset
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
| | - Richard L. Young
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
- Intestinal Nutrient Sensing Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
| | - Amanda J. Page
- Vagal Afferent Research Group Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health Adelaide Medical School The University of Adelaide Adelaide SA Australia
- Nutrition, Diabetes & Gut Health, Lifelong Health Theme South Australian Health & Medical Research Institute (SAHMRI) Adelaide SA Australia
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8
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Risdon S, Battault S, Romo-Romo A, Roustit M, Briand L, Meyer G, Almeda-Valdes P, Walther G. Sucralose and Cardiometabolic Health: Current Understanding from Receptors to Clinical Investigations. Adv Nutr 2021; 12:1500-1513. [PMID: 33578411 PMCID: PMC8321845 DOI: 10.1093/advances/nmaa185] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/26/2020] [Accepted: 12/31/2020] [Indexed: 12/15/2022] Open
Abstract
The excess consumption of added sugar is consistently found to be associated with weight gain, and a higher risk of type 2 diabetes mellitus, coronary heart disease, and stroke. In an effort to reduce the risk of cardiometabolic disease, sugar is frequently replaced by low- and null-calorie sweeteners (LCSs). Alarmingly, though, emerging evidence indicates that the consumption of LCSs is associated with an increase in cardiovascular mortality risk that is amplified in those who are overweight or obese. Sucralose, a null-caloric high-intensity sweetener, is the most commonly used LCS worldwide, which is regularly consumed by healthy individuals and patients with metabolic disease. To explore a potential causal role for sucralose in increased cardiovascular risk, this present review summarizes the preclinical and clinical data from current research detailing the effects of sucralose on systems controlling food intake, glucose homeostasis, and gut microbiota.
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Affiliation(s)
| | | | - Alonso Romo-Romo
- Department of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, México
| | - Matthieu Roustit
- Université Grenoble Alpes, Inserm U1042, Grenoble, France,Grenoble Alpes University Hospital, Clinical Pharmacology, Inserm CIC1406, Grenoble, France
| | - Loic Briand
- AgroSup Dijon, INRAE, Université de Bourgogne Franche-Comté, CNRS, Centre des Sciences du Goût et de l'Alimentation, Dijon, France
| | | | - Paloma Almeda-Valdes
- Department of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, México
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9
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Nunez-Salces M, Li H, Feinle-Bisset C, Young RL, Page AJ. Nutrient-sensing components of the mouse stomach and the gastric ghrelin cell. Neurogastroenterol Motil 2020; 32:e13944. [PMID: 32666613 DOI: 10.1111/nmo.13944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/22/2020] [Accepted: 06/22/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND The ability of the gut to detect nutrients is critical to the regulation of gut hormone secretion, food intake, and postprandial blood glucose control. Ingested nutrients are detected by specific gut chemosensors. However, knowledge of these chemosensors has primarily been derived from the intestine, while available information on gastric chemosensors is limited. This study aimed to investigate the nutrient-sensing repertoire of the mouse stomach with particular emphasis on ghrelin cells. METHODS Quantitative RT-PCR was used to determine mRNA levels of nutrient chemosensors (protein: G protein-coupled receptor 93 [GPR93], calcium-sensing receptor [CaSR], metabotropic glutamate receptor type 4 [mGluR4]; fatty acids: CD36, FFAR2&4; sweet/umami taste: T1R3), taste transduction components (TRPM5, GNAT2&3), and ghrelin and ghrelin-processing enzymes (PC1/3, ghrelin O-acyltransferase [GOAT]) in the gastric corpus and antrum of adult male C57BL/6 mice. Immunohistochemistry was performed to assess protein expression of chemosensors (GPR93, T1R3, CD36, and FFAR4) and their co-localization with ghrelin. KEY RESULTS Most nutrient chemosensors had higher mRNA levels in the antrum compared to the corpus, except for CD36, GNAT2, ghrelin, and GOAT. Similar regional distribution was observed at the protein level. At least 60% of ghrelin-positive cells expressed T1R3 and FFAR4, and over 80% expressed GPR93 and CD36. CONCLUSIONS AND INFERENCES The cellular mechanisms for the detection of nutrients are expressed in a region-specific manner in the mouse stomach and gastric ghrelin cells. These gastric nutrient chemosensors may play a role modulating gastrointestinal responses, such as the inhibition of ghrelin secretion following food intake.
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Affiliation(s)
- Maria Nunez-Salces
- Vagal Afferent Research Group, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, Australia
| | - Hui Li
- Vagal Afferent Research Group, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, Australia
| | - Christine Feinle-Bisset
- Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Richard L Young
- Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, Australia.,Intestinal Nutrient Sensing Group, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Amanda J Page
- Vagal Afferent Research Group, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Centre of Research Excellence in Translating Nutritional Science to Good Health, Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health & Medical Research Institute (SAHMRI), Adelaide, SA, Australia
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Christie S, O'Rielly R, Li H, Nunez-Salces M, Wittert GA, Page AJ. Modulatory effect of methanandamide on gastric vagal afferent satiety signals depends on nutritional status. J Physiol 2020; 598:2169-2182. [PMID: 32237243 DOI: 10.1113/jp279449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 03/25/2020] [Indexed: 12/18/2022] Open
Abstract
SIGNIFICANCE STATEMENT Gastric vagal afferent responses to tension are dampened in high fat diet-induced obesity. Endocannabinoids are known to dose-dependently inhibit and excite gastric vagal afferents but their effect on gastric vagal afferents in diet-induced obesity are unknown. In individual gastric vagal afferent neurons of diet-induced obese mice the co-expression of components of the endocannabinoid system, including CB1, GHSR, TRPV1 and FAAH, was increased compared with lean mice. In high fat diet-induced obese mice, methanandamide only inhibited gastric vagal afferent responses to tension, possibly due to the observed change in the balance of receptors, hormones and breakdown enzymes in this system. Collectively, these data suggest that endocannabinoid signalling, by gastric vagal afferents, is altered in diet-induced obesity which may impact satiety and gastrointestinal function. ABSTRACT Gastric vagal afferents (GVAs) play a role in appetite regulation. The endocannabinoid anandamide (AEA) dose-dependently inhibits and excites tension-sensitive GVAs. However, it is also known that high fat diet (HFD) feeding alters GVA responses to stretch. The aim of this study was to determine the role of AEA in GVA signalling in lean and HFD-induced obese mice. Male C57BL/6 mice were fed (12 weeks) a standard laboratory diet (SLD) or HFD. Protein and mRNA expression of components of the cannabinoid system was determined in individual GVA cell bodies and the gastric mucosa. An in vitro GVA preparation was used to assess the effect of methanandamide (mAEA) on tension-sensitive GVAs and the second messenger pathways involved. In individual GVA cell bodies, cannabinoid 1 (CB1) and ghrelin (GHSR) receptor mRNA was higher in HFD mice than SLD mice. Conversely, gastric mucosal AEA and ghrelin protein levels were lower in HFD mice than SLD mice. In SLD mice, mAEA exerted dose-dependent inhibitory and excitatory effects on tension-sensitive GVAs. Only an inhibitory effect of mAEA was observed in HFD mice. The excitatory effect of mAEA was dependent on CB1, transient receptor potential vanilloid 1 (TRPV1) and the protein kinase C. Conversely, the inhibitory effect was dependent on CB1, growth hormone secretagogue receptor, TRPV1 and the protein kinase A. Endocannabinoids, acting through CB1 and TRPV1, have a pivotal role in modulating GVA satiety signals depending on the second messenger pathway utilised. In HFD mice only an inhibitory effect was observed. These changes may contribute to the development and/or maintenance of obesity.
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Affiliation(s)
- Stewart Christie
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Rebecca O'Rielly
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Hui Li
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
| | - Maria Nunez-Salces
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Gary A Wittert
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
| | - Amanda J Page
- Vagal Afferent Research Group, Adelaide Medical School, University of Adelaide, Adelaide, SA, 5005, Australia.,Nutrition, Diabetes & Gut Health, Lifelong Health Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, 5000, Australia
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Abstract
Olfactory and taste receptors are expressed primarily in the nasal olfactory epithelium and gustatory taste bud cells, where they transmit real-time sensory signals to the brain. However, they are also expressed in multiple extra-nasal and extra-oral tissues, being implicated in diverse biological processes including sperm chemotaxis, muscle regeneration, bronchoconstriction and bronchodilatation, inflammation, appetite regulation and energy metabolism. Elucidation of the physiological roles of these ectopic receptors is revealing potential therapeutic and diagnostic applications in conditions including wounds, hair loss, asthma, obesity and cancers. This Review outlines current understanding of the diverse functions of ectopic olfactory and taste receptors and assesses their potential to be therapeutically exploited.
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Hunne B, Stebbing MJ, McQuade RM, Furness JB. Distributions and relationships of chemically defined enteroendocrine cells in the rat gastric mucosa. Cell Tissue Res 2019; 378:33-48. [PMID: 31049687 DOI: 10.1007/s00441-019-03029-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/04/2019] [Indexed: 12/12/2022]
Abstract
This paper provides quantitative data on the distributions of enteroendocrine cells (EEC), defined by the hormones they contain, patterns of colocalisation between hormones and EEC relations to nerve fibres in the rat gastric mucosa. The rat stomach has three mucosal types: non-glandular stratified squamous epithelium of the fundus and esophageal groove, a region of oxyntic glands in the corpus, and pyloric glands of the antrum and pylorus. Ghrelin and histamine were both contained in closed cells, not contacting the lumen, and were most numerous in the corpus. Gastrin cells were confined to the antrum, and 5-hydroxytryptamine (5-HT) and somatostatin cells were more frequent in the antrum than the corpus. Most somatostatin cells had basal processes that in the antrum commonly contacted gastrin cells. Peptide YY (PYY) cells were rare and mainly in the antrum. The only numerous colocalisations were 5-HT and histamine, PYY and gastrin and gastrin and histamine in the antrum, but each of these populations was small. Peptide-containing nerve fibres were found in the mucosa. One of the most common types was vasoactive intestinal peptide (VIP) fibres. High-resolution analysis showed that ghrelin cells were closely and selectively approached by VIP fibres. In contrast, gastrin cells were not selectively innervated by VIP or CGRP fibres. The study indicates that there are distinct populations of gastric EEC and selective innervation of ghrelin cells. It also shows that, in contrast to EEC of the small intestine, the majority of EEC within the stomach contained only a single hormone.
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Affiliation(s)
- Billie Hunne
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Martin J Stebbing
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, 3010, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, 3010, Australia
| | - Rachel M McQuade
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, 3010, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, 3010, Australia
| | - John B Furness
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria, 3010, Australia.
- Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, 3010, Australia.
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13
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Wang Q, Liszt KI, Deloose E, Canovai E, Thijs T, Farré R, Ceulemans LJ, Lannoo M, Tack J, Depoortere I. Obesity alters adrenergic and chemosensory signaling pathways that regulate ghrelin secretion in the human gut. FASEB J 2019; 33:4907-4920. [PMID: 30629462 DOI: 10.1096/fj.201801661rr] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Chemosensory signaling in organs such as the mouth and gut contributes to the mechanisms that control metabolism. We investigated the chemosensory pathways that regulate secretion of the hunger hormone ghrelin in response to neurotransmitters, bitter and sweet tastants at the cellular level in the human gut mucosa, and the disturbances in this regulatory pathway induced by obesity. Obesity impaired ghrelin protein production and adrenalin-induced ghrelin secretion in fundic cells, which was counterbalanced by somatostatin. Bitter agonists selective for taste receptor type 2 (TAS2Rs), TAS2R5 and TAS2R10 stimulated ghrelin secretion in fundic cells. The stimulatory effect of the broadly tuned bitter agonist, denatonium benzoate, was selectively blunted by obesity in the small intestine but not in the fundus. Luminal glucose concentrations inhibited ghrelin secretion via sodium-dependent glucose cotransporter and taste receptor type 1 member 3. Obesity altered the sensitivity of the ghrelin cell to glucose in the small intestine but not in the fundus. Sweet taste receptor activation inhibited bitter taste signaling of the ghrelin cell. In conclusion, obesity impairs the sympathetic drive that controls ghrelin release in the fundus and affects the sensitivity of the ghrelin cell to bitter and sweet stimuli in the small intestine but not in the fundus. Region-selective targeting of gut taste receptors in obesity is indicated.-Wang, Q., Liszt, K. I., Deloose, E., Canovai, E., Thijs, T., Farré, R., Ceulemans, L. J., Lannoo, M., Tack, J., Depoortere, I. Obesity alters adrenergic and chemosensory signaling pathways that regulate ghrelin secretion in the human gut.
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Affiliation(s)
- Qiaoling Wang
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Kathrin I Liszt
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Eveline Deloose
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Emilio Canovai
- Department of Abdominal Surgery and Transplant Coordination, University Hospitals Leuven, Leuven, Belgium; and
| | - Theo Thijs
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Ricard Farré
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Laurens J Ceulemans
- Department of Abdominal Surgery and Transplant Coordination, University Hospitals Leuven, Leuven, Belgium; and
| | - Matthias Lannoo
- Department of Abdominal Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Jan Tack
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
| | - Inge Depoortere
- Translational Research Center for Gastrointestinal Disorders, University of Leuven, Leuven, Belgium
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14
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Fakhry J, Stebbing MJ, Hunne B, Bayguinov Y, Ward SM, Sasse KC, Callaghan B, McQuade RM, Furness JB. Relationships of endocrine cells to each other and to other cell types in the human gastric fundus and corpus. Cell Tissue Res 2018; 376:37-49. [PMID: 30467709 DOI: 10.1007/s00441-018-2957-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/01/2018] [Indexed: 02/07/2023]
Abstract
Gastric endocrine cell hormones contribute to the control of the stomach and to signalling to the brain. In other gut regions, enteroendocrine cells (EECs) exhibit extensive patterns of colocalisation of hormones. In the current study, we characterise EECs in the human gastric fundus and corpus. We utilise immunohistochemistry to investigate EECs with antibodies to ghrelin, serotonin (5-HT), somatostatin, peptide YY (PYY), glucagon-like peptide 1, calbindin, gastrin and pancreastatin, the latter as a marker of enterochromaffin-like (ECL) cells. EECs were mainly located in regions of the gastric glands populated by parietal cells. Gastrin cells were absent and PYY cells were very rare. Except for about 25% of 5-HT cells being a subpopulation of ECL cells marked by pancreastatin, colocalisation of hormones in gastric EECs was infrequent. Ghrelin cells were distributed throughout the fundus and corpus; most were basally located in the glands, often very close to parietal cells and were closed cells i.e., not in contact with the lumen. A small proportion had long processes located close to the base of the mucosal epithelium. The 5-HT cells were of at least three types: small, round, closed cells; cells with multiple, often very long, processes; and a subgroup of ECL cells. Processes were in contact with their surrounding cells, including parietal cells. Mast cells had very weak or no 5-HT immunoreactivity. Somatostatin cells were a closed type with long processes. In conclusion, four major chemically defined EEC types occurred in the human oxyntic mucosa. Within each group were cells with distinct morphologies and relationships to other mucosal cells.
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Affiliation(s)
- Josiane Fakhry
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Martin J Stebbing
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia.,Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - Billie Hunne
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Yulia Bayguinov
- Department of Physiology and Cell Biology, Reno School of Medicine, University of Nevada, Reno, NV, 89557, USA
| | - Sean M Ward
- Department of Physiology and Cell Biology, Reno School of Medicine, University of Nevada, Reno, NV, 89557, USA
| | - Kent C Sasse
- School of Medicine, Universiity of Nevada, Reno, NV, 89557, USA.,Renown Regional Medical Center, Reno, NV, 89502, USA
| | - Brid Callaghan
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Rachel M McQuade
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia.,Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia
| | - John B Furness
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, VIC, 3010, Australia. .,Florey Institute of Neuroscience and Mental Health, Parkville, VIC, 3010, Australia.
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15
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Rother KI, Conway EM, Sylvetsky AC. How Non-nutritive Sweeteners Influence Hormones and Health. Trends Endocrinol Metab 2018; 29:455-467. [PMID: 29859661 DOI: 10.1016/j.tem.2018.04.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/27/2018] [Accepted: 04/27/2018] [Indexed: 01/16/2023]
Abstract
Non-nutritive sweeteners (NNSs) elicit a multitude of endocrine effects in vitro, in animal models, and in humans. The best-characterized consequences of NNS exposure are metabolic changes, which may be mediated by activation of sweet taste receptors in oral and extraoral tissues (e.g., intestine, pancreatic β cells, and brain), and alterations of the gut microbiome. These mechanisms are likely synergistic and may differ across species and chemically distinct NNSs. However, the extent to which these hormonal effects are clinically relevant in the context of human consumption is unclear. Further investigation following prolonged exposure is required to better understand the role of NNSs in human health, with careful consideration of genetic, dietary, anthropometric, and other interindividual differences.
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Affiliation(s)
- Kristina I Rother
- Section on Pediatric Diabetes and Metabolism, National Institute of Diabetes, Digestive, and Kidney Diseases, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD 20892, USA.
| | - Ellen M Conway
- Section on Pediatric Diabetes and Metabolism, National Institute of Diabetes, Digestive, and Kidney Diseases, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD 20892, USA
| | - Allison C Sylvetsky
- Section on Pediatric Diabetes and Metabolism, National Institute of Diabetes, Digestive, and Kidney Diseases, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD 20892, USA; Department of Exercise and Nutrition Sciences, The George Washington University, 950 New Hampshire Avenue NW, 2nd floor, Washington DC 20052, USA; Sumner M. Redstone Global Center for Prevention and Wellness, Milken Institute School of Public Health, The George Washington University, 950 New Hampshire Avenue NW, 3rd floor, Washington DC 20052, USA
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16
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Meyer-Gerspach AC, Biesiekierski JR, Deloose E, Clevers E, Rotondo A, Rehfeld JF, Depoortere I, Van Oudenhove L, Tack J. Effects of caloric and noncaloric sweeteners on antroduodenal motility, gastrointestinal hormone secretion and appetite-related sensations in healthy subjects. Am J Clin Nutr 2018; 107:707-716. [DOI: 10.1093/ajcn/nqy004] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/26/2017] [Indexed: 12/11/2022] Open
Affiliation(s)
- Anne Christin Meyer-Gerspach
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
- Department of Research, Clara Hospital, Basel, Switzerland
| | - Jessica R Biesiekierski
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Eveline Deloose
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Egbert Clevers
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Alessandra Rotondo
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Jens F Rehfeld
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Inge Depoortere
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Lukas Van Oudenhove
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
| | - Jan Tack
- Translational Research Center for Gastrointestinal Disorders, Catholic University of Leuven, Leuven, Belgium
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17
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O'Brien P, Hewett R, Corpe C. Sugar sensor genes in the murine gastrointestinal tract display a cephalocaudal axis of expression and a diurnal rhythm. Physiol Genomics 2018; 50:448-458. [PMID: 29625018 DOI: 10.1152/physiolgenomics.00139.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Distributed along the length of the gastrointestinal (GI) tract are nutrient sensing cells that release numerous signaling peptides influencing GI function, nutrient homeostasis and energy balance. Recent studies have shown a diurnal rhythm in GI nutrient sensing, but the mechanisms responsible for rhythmicity are poorly understood. In this report we studied murine GI sugar sensor gene and protein expression levels in the morning (7 AM) and evening (7 PM). Sweet taste receptor ( tas1r2/tas1r3/gnat3/gnat1) sugar transporter ( slc5a1, slc2a2, slc2a5) and putative sugar sensor ( slc5a4a and slc5a4b) gene expression levels were highest in tongue and proximal and distal small intestine, respectively. Clock gene ( cry2/arntl) activity was detected in all regions studied. Slc5a4a and slc5a4b gene expression showed clear diurnal rhythmicity in the small intestine and stomach, respectively, although no rhythmicity was detected in SGLT3 protein expression. Tas1r2, tas1r3, gnat1, and gcg displayed a limited rhythm in gene expression in proximal small intestine. Microarray analysis revealed a diurnal rhythm in gut peptide gene expression in tongue (7 AM vs. 7 PM) and in silico promoter analysis indicated intestinal sugar sensors and transporters possessed the canonical E box elements necessary for clock gene control over gene transcription. In this report we present evidence of a diurnal rhythm in genes that are responsible for intestinal nutrient sensing that is most likely controlled by clock gene activity. Disturbances in clock gene/nutrient sensing interactions may be important in the development of diet-related diseases, such as obesity and diabetes.
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Affiliation(s)
- Patrick O'Brien
- Department of Nutritional Sciences, School of Medicine, King's College London , London , United Kingdom
| | - Rhys Hewett
- Department of Nutritional Sciences, School of Medicine, King's College London , London , United Kingdom
| | - Christopher Corpe
- Department of Nutritional Sciences, School of Medicine, King's College London , London , United Kingdom
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18
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Abstract
The gastrointestinal tract represents the largest interface between the human body and the external environment. It must continuously monitor and discriminate between nutrients that need to be assimilated and harmful substances that need to be expelled. The different cells of the gut epithelium are therefore equipped with a subtle chemosensory system that communicates the sensory information to several effector systems involved in the regulation of appetite, immune responses, and gastrointestinal motility. Disturbances or adaptations in the communication of this sensory information may contribute to the development or maintenance of disease. This is a new emerging research field in which perception of taste can be considered as a novel key player participating in the regulation of gut function. Specific diets or agonists that target these chemosensory signaling pathways may be considered as new therapeutic targets to tune adequate physiological processes in the gut in health and disease.
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Affiliation(s)
- S Steensels
- Translational Research Center for Gastrointestinal Disorders, KU Leuven, 3000 Leuven, Belgium;
| | - I Depoortere
- Translational Research Center for Gastrointestinal Disorders, KU Leuven, 3000 Leuven, Belgium;
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Tanaka M, Yasuoka A, Yoshinuma H, Saito Y, Asakura T, Tanabe S. Seasoning ingredients in a medium-fat diet regulate lipid metabolism in peripheral tissues via the hypothalamic-pituitary axis in growing rats. Biosci Biotechnol Biochem 2018; 82:497-506. [PMID: 29370734 DOI: 10.1080/09168451.2018.1427551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We fed rats noodle (N) -diet containing 30 wt.% instant noodle with a 26% fat-to-energy ratio for 30 days (N-group). Compared with rats that were fed the same amount of nutrients (C-group), the N-group showed lower liver triacylglycerol levels and higher fecal cholesterol levels. We then analyzed transcriptome of the hypothalamic-pituitary (HP), the liver and the white adipose tissue (WAT). Thyroid stimulating hormone (Tshb), and its partner, glycoprotein hormone genes were up-regulated in the HP of N-group. Sterol regulatory element binding transcription factors were activated in the liver of N-group, while an up-regulation of the angiogenic signal occurred in the WAT of N-group. N-group showed higher urine noradrenaline (NA) level suggesting that these tissue signals are regulated by NA and Tshb. The N-diet contains 0.326 wt.% glutamate, 0.00236 wt.% 6-shogaol and Maillard reaction products. Our results suggest that these ingredients may affect lipid homeostasis via the HP axis.
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Key Words
- AM: adrenal medulla
- ANGPT 2: angiopoietin 2
- CNS: central nervous system
- Cga: glycoprotein hormones alpha polypeptide
- DEGs: differentially expressed genes
- DHBA: 3,4-dihydroxybenzylamine
- FDR: false discovery rate
- HP: hypothalamic-pituitary
- HPLC: High Performance Liquid Chromatography
- IPA: Ingenuity Pathway Analysis
- NA: noradrenaline
- NCBI: National Center of Biotechnology Information
- SN: sympathetic nerve
- SREBF: sterol regulatory element binding transcription factor
- TG: triacylglycerol
- TH: thyroid hormone
- TRPs: transient receptor potential channels
- The designation of following abbreviations, Acsm5, Avp, Ch25h, CREB, Cyp51a1, Dhcr7, ERBB4, F2R, Gpd1, Hdc, Hmgcs, Maob, NEDD9, NFkB, SMARCB1, SPDEF, SPI1, STAT4, TGFBR1, Vip, WNT3A, and XBP1, are shown in Table 5 and 6.
- Trh: Thyrotropin releasing hormone
- Tshb: thyroid stimulating hormone B
- WAT: white adipose tissue
- hypothalamus
- instant noodle
- lipid metabolism
- noradrenaline
- seasoning ingredients
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Affiliation(s)
- Mitsuru Tanaka
- a Nissin Global Innovation Center , Nissin Foods Holdings , Hachioji , Japan
| | - Akihito Yasuoka
- b Project on Health and Anti-Aging, Kanagawa Academy of Science and Technology , Kawasaki , Japan
| | - Haruka Yoshinuma
- a Nissin Global Innovation Center , Nissin Foods Holdings , Hachioji , Japan
| | - Yoshikazu Saito
- c Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo , Japan
| | - Tomiko Asakura
- c Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences , The University of Tokyo , Tokyo , Japan
| | - Soichi Tanabe
- a Nissin Global Innovation Center , Nissin Foods Holdings , Hachioji , Japan
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