1
|
Rathaus M, Azem L, Livne R, Ron S, Ron I, Hadar R, Efroni G, Amir A, Braun T, Haberman Y, Tirosh A. Long-term metabolic effects of non-nutritive sweeteners. Mol Metab 2024; 88:101985. [PMID: 38977130 PMCID: PMC11347859 DOI: 10.1016/j.molmet.2024.101985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/02/2024] [Accepted: 07/03/2024] [Indexed: 07/10/2024] Open
Abstract
OBJECTIVE Excessive consumption of added sugars has been linked to the rise in obesity and associated metabolic abnormalities. Non-nutritive sweeteners (NNSs) offer a potential solution to reduce sugar intake, yet their metabolic safety remains debated. This study aimed to systematically assess the long-term metabolic effects of commonly used NNSs under both normal and obesogenic conditions. METHODS To ensure consistent sweetness level and controlling for the acceptable daily intake (ADI), eight weeks old C57BL/6 male mice were administered with acesulfame K (ace K, 535.25 mg/L), aspartame (411.75 mg/L), sucralose (179.5 mg/L), saccharin (80 mg/L), or steviol glycoside (Reb M, 536.25 mg/L) in the drinking water, on the background of either regular or high-fat diets (in high fat diet 60% of calories from fat). Water or fructose-sweetened water (82.3.gr/L), were used as controls. Anthropometric and metabolic parameters, as well as microbiome composition, were analyzed following 20-weeks of exposure. RESULTS Under a regular chow diet, chronic NNS consumption did not significantly affect body weight, fat mass, or glucose metabolism as compared to water consumption, with aspartame demonstrating decreased glucose tolerance. In diet-induced obesity, NNS exposure did not increase body weight or alter food intake. Exposure to sucralose and Reb M led to improved insulin sensitivity and decreased weight gain. Reb M specifically was associated with increased prevalence of colonic Lachnospiracea bacteria. CONCLUSIONS Long-term consumption of commonly used NNSs does not induce adverse metabolic effects, with Reb M demonstrating a mild improvement in metabolic abnormalities. These findings provide valuable insights into the metabolic impact of different NNSs, aiding in the development of strategies to combat obesity and related metabolic disorders.
Collapse
Affiliation(s)
- Moran Rathaus
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel
| | - Loziana Azem
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel; Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Rinat Livne
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel
| | - Sophie Ron
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel; Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Idit Ron
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel
| | - Rotem Hadar
- Sheba Medical Center, Tel-Hashomer, affiliated with the Tel-Aviv University, Israel
| | - Gilat Efroni
- Sheba Medical Center, Tel-Hashomer, affiliated with the Tel-Aviv University, Israel
| | - Amnon Amir
- Sheba Medical Center, Tel-Hashomer, affiliated with the Tel-Aviv University, Israel
| | - Tzipi Braun
- Sheba Medical Center, Tel-Hashomer, affiliated with the Tel-Aviv University, Israel
| | - Yael Haberman
- Sheba Medical Center, Tel-Hashomer, affiliated with the Tel-Aviv University, Israel; Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Amir Tirosh
- The Dalia and David Arabov Endocrinology and Diabetes Research Center, Division of Endocrinology, Diabetes and Metabolism, Sheba Medical Center, Tel-Hashomer, Israel; Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| |
Collapse
|
2
|
Yin X, Shi Y, Sheng T, Ji C. Early-Life Gut Microbiota: A Possible Link Between Maternal Exposure to Non-Nutritive Sweeteners and Metabolic Syndrome in Offspring. Nutr Rev 2024:nuae140. [PMID: 39348276 DOI: 10.1093/nutrit/nuae140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2024] Open
Abstract
Metabolic syndrome (MetS) is recognized as a group of metabolic abnormalities, characterized by clustered interconnected traits that elevate the risks of obesity, cardiovascular and atherosclerotic diseases, hyperlipidemia, and type 2 diabetes mellitus. Non-nutritive sweeteners (NNS) are commonly consumed by those with imbalanced calorie intake, especially in the perinatal period. In the past, accumulating evidence showed the transgenerational and mediated roles of human microbiota in the development of early-life MetS. Maternal exposure to NNS has been recognized as a risk factor for filial metabolic disturbance through various mechanisms, among which gut microbiota and derived metabolites function as nodes linking NNS and MetS in early life. Despite the widespread consumption of NNS, there remain growing concerns about their transgenerational impact on metabolic health. There is growing evidence of NNS being implicated in the development of metabolic abnormalities. Intricate complexities exist and a comprehensive understanding of how the gut microbiota interacts with mechanisms related to maternal NNS intake and disrupts metabolic homeostasis of offspring is critical to realize its full potential in preventing early-life MetS. This review aims to elucidate the effects of early-life gut microbiota and links to maternal NNS exposure and imbalanced offspring metabolic homeostasis and discusses potential perspectives and challenges, which may provide enlightenment and understanding into optimal perinatal nutritional management.
Collapse
Affiliation(s)
- Xiaoxiao Yin
- Nanjing Medical Research Center for Women and Children, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, Jiangsu 210004, China
- School of Nursing, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Yujie Shi
- Nanjing Medical Research Center for Women and Children, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, Jiangsu 210004, China
| | - Tongtong Sheng
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - Chenbo Ji
- Nanjing Medical Research Center for Women and Children, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, Jiangsu 210004, China
- School of Nursing, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| |
Collapse
|
3
|
Martínez-Magaña JJ, Genis-Mendoza AD, Gallegos-Silva I, López-Narváez ML, Juárez-Rojop IE, Diaz-Zagoya JC, Tovilla-Zárate CA, González-Castro TB, Nicolini H, Solis-Medina A. Differential Alterations of Expression of the Serotoninergic System Genes and Mood-Related Behavior by Consumption of Aspartame or Potassium Acesulfame in Rats. Nutrients 2024; 16:490. [PMID: 38398814 PMCID: PMC10892058 DOI: 10.3390/nu16040490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/18/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
The use of aspartame (ASP) and potassium acesulfame (ACK) to reduce weight gain is growing; however, contradictory effects in body mass index control and neurobiological alterations resulting from artificial sweeteners consumption have been reported. This study aimed to evaluate the impact of the chronic consumption of ASP and ACK on mood-related behavior and the brain expression of serotonin genes in male Wistar rats. Mood-related behaviors were evaluated using the swim-forced test and defensive burying at two time points: 45 days (juvenile) and 95 days (adult) postweaning. Additionally, the mRNA expression of three serotoninergic genes (Slc6a4, Htr1a, and Htr2c) was measured in the brain areas (prefrontal cortex, hippocampus, and hypothalamus) involved in controlling mood-related behaviors. In terms of mood-related behaviors, rats consuming ACK exhibited anxiety-like behavior only during the juvenile stage. In contrast, rats consuming ASP showed a reduction in depressive-like behavior during the juvenile stage but an increase in the adult stage. The expression of Slc6a4 mRNA increased in the hippocampus of rats consuming artificial sweeteners during the juvenile stage. In the adult stage, there was an upregulation in the relative expression of Slc6a4 and Htr1a in the hypothalamus, while Htr2c expression decreased in the hippocampus of rats consuming ASP. Chronic consumption of ASP and ACK appears to have differential effects during neurodevelopmental stages in mood-related behavior, potentially mediated by alterations in serotoninergic gene expression.
Collapse
Affiliation(s)
- José Jaime Martínez-Magaña
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (I.G.-S.); (A.S.-M.)
| | - Alma Delia Genis-Mendoza
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (I.G.-S.); (A.S.-M.)
| | - Ileana Gallegos-Silva
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (I.G.-S.); (A.S.-M.)
| | - María Lilia López-Narváez
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico; (M.L.L.-N.); (I.E.J.-R.)
| | - Isela Esther Juárez-Rojop
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico; (M.L.L.-N.); (I.E.J.-R.)
| | - Juan C. Diaz-Zagoya
- División de Investigación, Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico;
| | - Carlos Alfonso Tovilla-Zárate
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa 86100, Mexico; (M.L.L.-N.); (I.E.J.-R.)
| | | | - Humberto Nicolini
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (I.G.-S.); (A.S.-M.)
| | - Anayelly Solis-Medina
- Laboratorio de Genómica de Enfermedades Psiquiátricas y Neurodegenerativas, Instituto Nacional de Medicina Genómica, Ciudad de México 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (I.G.-S.); (A.S.-M.)
| |
Collapse
|
4
|
Gentry R, Greene T, Clewell HJ, Rodricks JV. Critical considerations in the review of the toxicological evidence regarding the potential carcinogenicity of aspartame. Food Chem Toxicol 2023; 182:114105. [PMID: 37852352 DOI: 10.1016/j.fct.2023.114105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/13/2023] [Accepted: 10/13/2023] [Indexed: 10/20/2023]
Affiliation(s)
| | - Tracy Greene
- Ramboll US Consulting, Inc., Monroe, LA, 71201, USA
| | | | | |
Collapse
|
5
|
Jones SK, McCarthy DM, Stanwood GD, Schatschneider C, Bhide PG. Learning and memory deficits produced by aspartame are heritable via the paternal lineage. Sci Rep 2023; 13:14326. [PMID: 37652922 PMCID: PMC10471780 DOI: 10.1038/s41598-023-41213-2] [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: 03/16/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
Environmental exposures produce heritable traits that can linger in the population for one or two generations. Millions of individuals consume substances such as artificial sweeteners daily that are declared safe by regulatory agencies without evaluation of their potential heritable effects. We show that consumption of aspartame, an FDA-approved artificial sweetener, daily for up to 16-weeks at doses equivalent to only 7-15% of the FDA recommended maximum daily intake value (equivalent to 2-4 small, 8 oz diet soda drinks per day) produces significant spatial learning and memory deficits in mice. Moreover, the cognitive deficits are transmitted to male and female descendants along the paternal lineage suggesting that aspartame's adverse cognitive effects are heritable, and that they are more pervasive than current estimates, which consider effects in the directly exposed individuals only. Traditionally, deleterious environmental exposures of pregnant and nursing women are viewed as risk factors for the health of future generations. Environmental exposures of men are not considered to pose similar risks. Our findings suggest that environmental exposures of men can produce adverse impact on cognitive function in future generations and demonstrate the need for considering heritable effects via the paternal lineage as part of the regulatory evaluations of artificial sweeteners.
Collapse
Affiliation(s)
- Sara K Jones
- Biomedical Sciences, Florida State University College of Medicine, 1115, West Call Street, Tallahassee, FL, 32306, USA
| | - Deirdre M McCarthy
- Biomedical Sciences, Florida State University College of Medicine, 1115, West Call Street, Tallahassee, FL, 32306, USA
- Center for Brain Repair, Florida State University College of Medicine, Tallahassee, FL, 32306, USA
| | - Gregg D Stanwood
- Biomedical Sciences, Florida State University College of Medicine, 1115, West Call Street, Tallahassee, FL, 32306, USA
- Center for Brain Repair, Florida State University College of Medicine, Tallahassee, FL, 32306, USA
- Program in Neuroscience, Florida State University College of Medicine, Tallahassee, FL, 32306, USA
| | - Christopher Schatschneider
- Program in Neuroscience, Florida State University College of Medicine, Tallahassee, FL, 32306, USA
- Psychology, College of Arts and Sciences, Florida State University, Tallahassee, FL, 32306, USA
| | - Pradeep G Bhide
- Biomedical Sciences, Florida State University College of Medicine, 1115, West Call Street, Tallahassee, FL, 32306, USA.
- Center for Brain Repair, Florida State University College of Medicine, Tallahassee, FL, 32306, USA.
- Program in Neuroscience, Florida State University College of Medicine, Tallahassee, FL, 32306, USA.
| |
Collapse
|
6
|
Mukherjee I, Biswas S, Singh S, Talukdar J, Alqahtani MS, Abbas M, Nag TC, Mridha AR, Gupta S, Sharma JB, Kumari S, Dhar R, Karmakar S. Monosodium Glutamate Perturbs Human Trophoblast Invasion and Differentiation through a Reactive Oxygen Species-Mediated Pathway: An In-Vitro Assessment. Antioxidants (Basel) 2023; 12:antiox12030634. [PMID: 36978882 PMCID: PMC10045473 DOI: 10.3390/antiox12030634] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/19/2023] [Accepted: 02/21/2023] [Indexed: 03/08/2023] Open
Abstract
The overproduction of reactive oxygen species (ROS) has been associated with various human diseases. ROS exert a multitude of biological effects with both physiological and pathological consequences. Monosodium glutamate (MSG), a sodium salt of the natural amino acid glutamate, is a flavor-enhancing food additive, which is widely used in Asian cuisine and is an ingredient that brings out the “umami” meat flavor. MSG consumption in rats is associated with ROS generation. Owing to its consumption as part of the fast-food culture and concerns about its possible effects on pregnancy, we aimed to study the impact of MSG on placental trophoblast cells. MSG exposure influenced trophoblast invasion and differentiation, two of the most critical functions during placentation through enhanced production of ROS. Similar findings were also observed on MSG-treated placental explants, as confirmed by elevated Nrf2 levels. Ultrastructural studies revealed signs of subcellular injury by MSG exposure. Mechanistically, MSG-induced oxidative stress with endoplasmic reticulum stress pathways involving Xbp1s and IRE1α was observed. The effect of MSG through an increased ROS production indicates that its long-term exposure might have adverse health effect by compromising key trophoblast functions.
Collapse
Affiliation(s)
- Indrani Mukherjee
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
- Amity Institute of Biotechnology (AIB), Amity University, Noida 201301, India
| | - Subhrajit Biswas
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Noida 201301, India
| | - Sunil Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Joyeeta Talukdar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Mohammed S. Alqahtani
- Radiological Sciences Department, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
- BioImaging Unit, Space Research Centre, Michael Atiyah Building, University of Leicester, Leicester LE1 7RH, UK
| | - Mohamed Abbas
- Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
- Electronics and Communications Department, College of Engineering, Delta University for Science and Technology, Gamesa 35712, Egypt
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Asit Ranjan Mridha
- Department of Pathology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Surabhi Gupta
- Department of Reproductive Biology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Jai Bhagwan Sharma
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Supriya Kumari
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Ruby Dhar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
- Correspondence: (R.D.); (S.K.); Tel.: +91-9999612564 (S.K.)
| | - Subhradip Karmakar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
- Correspondence: (R.D.); (S.K.); Tel.: +91-9999612564 (S.K.)
| |
Collapse
|
7
|
Huang SY, Sun R, Chen YC, Kang L, Wang CT, Chiu CF, Wu HT. Aspartame consumption during pregnancy impairs placenta growth in mice through sweet taste receptor-reactive oxygen species-dependent pathway. J Nutr Biochem 2023; 113:109228. [PMID: 36435291 DOI: 10.1016/j.jnutbio.2022.109228] [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: 11/18/2021] [Revised: 09/23/2022] [Accepted: 10/05/2022] [Indexed: 11/25/2022]
Abstract
The prevalence of obesity has risen dramatically over recent years, and so has the prevalence of adverse obesity-associated pregnancy outcomes. To combat obesity, the calorie contents of many foods and beverages may be reduced by the use of artificial sweeteners, such as aspartame. However, animal studies suggest that aspartame and its metabolites may exhibit toxicity, and the effects of aspartame on pregnancy are largely unknown. In this study, we treated pregnant mice with aspartame by oral gavage and found that the treatment decreased fasting blood glucose level, whereas systolic blood pressure was elevated. Importantly, the aspartame-treated animals also had low placenta and fetus weights, as well as reduced thickness of the placenta decidua layer. Moreover, aspartame decreased the expression of epithelial-mesenchymal transition proteins and manganese superoxide dismutase (MnSOD) in mouse placentae. In order to clarify the mechanisms though which aspartame affects placenta, we performed experiments on 3A-sub-E trophoblasts. In the cells, aspartame treatments induced cell cycle arrest and reduced the proliferation rate, epithelial-mesenchymal transition, migration activity and invasion activity. We also found that aspartame increased reactive oxygen species (ROS) levels to hyper-activate Akt and downregulate MnSOD expression. Pretreatment with antioxidants or sweet taste receptor inhibitors reversed the effects of aspartame on trophoblast function. We also found that the aspartame metabolite phenylalanine similarly induced ROS production and affected proliferation of trophoblasts. Taken together, our data suggest that aspartame consumption during pregnancy may impact the structure, growth and function of the placenta via sweet taste receptor-mediated stimulation of oxidative stress.
Collapse
Affiliation(s)
- Shih-Yi Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan; Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Rong Sun
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan
| | - Yang-Ching Chen
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan; Department of Family Medicine, School of medicine, College of medicine, Taipei Medical University, Taipei, Taiwan
| | - Lin Kang
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Teng Wang
- Department of Internal Medicine, School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Feng Chiu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan
| | - Hung-Tsung Wu
- Department of Internal Medicine, School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| |
Collapse
|
8
|
Barakat H, Al-Roug K, Algonaiman R, Althwab SA, Alfheeaid HA, Alhomaid RM, Almujaydil MS, Bushnaq T, Ebeid TA. Biological Assessment of Stevioside and Sucralose as Sucrose Substitutes for Diabetics on STZ-Induced Diabetes in Rats. Molecules 2023; 28:940. [PMID: 36770608 PMCID: PMC9920551 DOI: 10.3390/molecules28030940] [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: 12/25/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/20/2023] Open
Abstract
Numerous food organizations have identified excessive calorie consumption and accompanying ailments as significant health risks associated with high sugar consumption. Administering stevioside (ST), sucralose (SU), and the two synergically (SU+ST) affected normal rats' weight gain. In the current study, SU showed the highest undesired effect. Indeed, administering the three treatments to diabetic rats (DR) did not improve the rats' weight gain. Although, insulin injection synergically with the treatments improved the weight gain, as recorded after three weeks. The best-improving rate was observed in the ST group. After the administration of ST and ST+SU to the DR, the blood glucose level (GL) was positively affected, with SU having no effects on reducing the GL. A considerable reduction in serum insulin (SIL) was noted in the DR+SU group. On the contrary, ST did not negatively affect the SIL, rather an improvement was recorded. In addition, giving SU did not significantly affect the ALT level in the DR or normal rats (NR). A significant improvement in total bilirubin (TBILI) was observed when insulin was injected with ST or SU in DR groups. Further, triglycerides (TG) after administering ST, SU, or ST+SU to NR had no significant difference compared to the control group (NR). Although, the three treatments markedly but not significantly lowered TG in the DR. For total cholesterol (CHO), both DR and NR had no significant effect after the three treatments. No histopathological alterations were recorded in the NR group. Diffuse and severe atrophy of the islands of Langerhans due to depletion of their cells and mild papillary hyperplasia of the pancreatic ducts were represented by a slightly folded ductal basement membrane and newly formed ductules in STZ-DR. Simultaneous atrophy and absence of the cells of islands of Langerhans besides ductal hyperplasia were evident in DR+SU. Hyperplastic ductal epithelium and atrophic Langerhans cells were seen in DR+SU+In. Degeneration and mild atrophy were observed in the islands of Langerhans structures. There was essentially no noticeable change after utilizing ST. A slight shrinkage of the Langerhans' islets was detected in DR+ST. In DR+ST+In, no histopathological alterations in the islands of Langerhans were recorded. Congestion in the stromal blood vessels associated with degenerative and necrotic changes in the cells of the islands of Langerhans in DR+SU+ST was observed. In NR+SU, congestion of the blood vessels associated with mild atrophy in the islands of Langerhans and dilatation in stromal blood vessels was noticed. In conclusion, ST is safe, and SU should be taken cautiously, such as mixing with ST and/or taken at a very low concentration to avoid its drastic effect on the human body.
Collapse
Affiliation(s)
- Hassan Barakat
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Food Technology Department, Faculty of Agriculture, Benha University, Banha 13736, Egypt
| | - Khaled Al-Roug
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Raya Algonaiman
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Sami A. Althwab
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Hani A. Alfheeaid
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Raghad M. Alhomaid
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Mona S. Almujaydil
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Taqwa Bushnaq
- Department of Food Science and Nutrition, College of Science, Taif University, Taif 21944, Saudi Arabia
| | - Tarek A. Ebeid
- Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| |
Collapse
|
9
|
El Tabbal J. Monosodium glutamate in a type 2 diabetes context: A large scoping review. Regul Toxicol Pharmacol 2022; 133:105223. [PMID: 35817208 DOI: 10.1016/j.yrtph.2022.105223] [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: 03/04/2022] [Revised: 05/16/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Abstract
This scoping review aimed to map and elaborate the heterogenous and inconclusive body of evidence relating monosodium glutamate (MSG) and type 2 diabetes (T2DM). For this reason, multiple health outcomes related to T2DM were included and a systematic search was conducted. Experimental and observational trials between 1995 and January 2021 were collected. The tests were highly heterogenous in their samples, doses, route of exposures, durations, diets and conclusions. There was a pattern of negative effects of MSG at oral doses ≥2,000 mg/kg of body weight, and by gavage or injection at any given dose. Evidence was lacking in many areas and most of the evidence relied on short term tests. Further research should focus on standardizing and justifying methodologies, conducting long term studies and toxicokinetic tests, and avoiding bias. Focusing on the gaps highlighted and investigating mechanisms of action of MSG is crucial. Evidence-based toxicology is encouraged.
Collapse
Affiliation(s)
- Jana El Tabbal
- Department of Health Sciences, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom.
| |
Collapse
|
10
|
Phenylalanine impairs insulin signaling and inhibits glucose uptake through modification of IRβ. Nat Commun 2022; 13:4291. [PMID: 35879296 PMCID: PMC9314339 DOI: 10.1038/s41467-022-32000-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/08/2022] [Indexed: 11/09/2022] Open
Abstract
Whether amino acids act on cellular insulin signaling remains unclear, given that increased circulating amino acid levels are associated with the onset of type 2 diabetes (T2D). Here, we report that phenylalanine modifies insulin receptor beta (IRβ) and inactivates insulin signaling and glucose uptake. Mice fed phenylalanine-rich chow or phenylalanine-producing aspartame or overexpressing human phenylalanyl-tRNA synthetase (hFARS) develop insulin resistance and T2D symptoms. Mechanistically, FARS phenylalanylate lysine 1057/1079 of IRβ (F-K1057/1079), inactivating IRβ and preventing insulin from promoting glucose uptake by cells. SIRT1 reverse F-K1057/1079 and counteract the insulin-inactivating effects of hFARS and phenylalanine. F-K1057/1079 and SIRT1 levels in white blood cells from T2D patients are positively and negatively correlated with T2D onset, respectively. Blocking F-K1057/1079 with phenylalaninol sensitizes insulin signaling and relieves T2D symptoms in hFARS-transgenic and db/db mice. These findings shed light on the activation of insulin signaling and T2D progression through inhibition of phenylalanylation. Whether amino acids act on cellular insulin signaling remains unclear. Here, the authors find that phenylalanine modifies insulin receptor beta (IRβ) and inactivates insulin signaling and glucose uptake and positively correlated with T2D onset.
Collapse
|
11
|
Stampe S, Leth-Møller M, Greibe E, Hoffmann-Lücke E, Pedersen M, Ovesen P. Artificial Sweeteners in Breast Milk: A Clinical Investigation with a Kinetic Perspective. Nutrients 2022; 14:nu14132635. [PMID: 35807817 PMCID: PMC9268461 DOI: 10.3390/nu14132635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/18/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
Artificial sweeteners (ASs) are calorie-free chemical substances used instead of sugar to sweeten foods and drinks. Pregnant women with obesity or diabetes are often recommended to substitute sugary products with ASs to prevent an increase in body weight. However, some recent controversy surrounding ASs relates to concerns about the risk of obesity caused by a variety of metabolic changes, both in the mother and the offspring. This study addressed these concerns and investigated the biodistribution of ASs in plasma and breast milk of lactating women to clarify whether ASs can transfer from mother to offspring through breast milk. We recruited 49 lactating women who were provided with a beverage containing four different ASs (acesulfame-potassium, saccharin, cyclamate, and sucralose). Blood and breast milk samples were collected before and up to six hours after consumption. The women were categorized: BMI < 25 (n = 20), BMI > 27 (n = 21) and type 1 diabetes (n = 8). We found that all four ASs were present in maternal plasma and breast milk. The time-to-peak was 30−120 min in plasma and 240−300 min in breast milk. Area under the curve (AUC) ratios in breast milk were 88.9% for acesulfame-potassium, 38.9% for saccharin, and 1.9% for cyclamate. We observed no differences in ASs distributions between the groups.
Collapse
Affiliation(s)
- Sofie Stampe
- Department of Gynaecology and Obstetrics, Aarhus University Hospital and Steno Diabetes Centre Aarhus, 8200 Aarhus N, Denmark;
- Comparative Medicine Laboratory, Aarhus University, 8000 Aarhus, Denmark;
- Institute for Clinical Medicine, Health, Aarhus University, 8000 Aarhus, Denmark; (E.G.); (E.H.-L.)
- Correspondence: (S.S.); (P.O.); Tel.: +45-31714417 (S.S.); +45-30714824 (P.O.)
| | - Magnus Leth-Møller
- Department of Gynaecology and Obstetrics, Aarhus University Hospital and Steno Diabetes Centre Aarhus, 8200 Aarhus N, Denmark;
- Comparative Medicine Laboratory, Aarhus University, 8000 Aarhus, Denmark;
- Institute for Clinical Medicine, Health, Aarhus University, 8000 Aarhus, Denmark; (E.G.); (E.H.-L.)
| | - Eva Greibe
- Institute for Clinical Medicine, Health, Aarhus University, 8000 Aarhus, Denmark; (E.G.); (E.H.-L.)
- Department of Clinical Biochemistry, Aarhus University Hospital, 8200 Aarhus N, Denmark
| | - Elke Hoffmann-Lücke
- Institute for Clinical Medicine, Health, Aarhus University, 8000 Aarhus, Denmark; (E.G.); (E.H.-L.)
- Department of Clinical Biochemistry, Aarhus University Hospital, 8200 Aarhus N, Denmark
| | - Michael Pedersen
- Comparative Medicine Laboratory, Aarhus University, 8000 Aarhus, Denmark;
| | - Per Ovesen
- Department of Gynaecology and Obstetrics, Aarhus University Hospital and Steno Diabetes Centre Aarhus, 8200 Aarhus N, Denmark;
- Institute for Clinical Medicine, Health, Aarhus University, 8000 Aarhus, Denmark; (E.G.); (E.H.-L.)
- Correspondence: (S.S.); (P.O.); Tel.: +45-31714417 (S.S.); +45-30714824 (P.O.)
| |
Collapse
|
12
|
PEKMEZEKMEK A. MONOSODYUM GLUTAMAT, LEZZET ARTTIRICI MI, ÖLDÜREN LEZZET Mİ? KAHRAMANMARAŞ SÜTÇÜ İMAM ÜNIVERSITESI TIP FAKÜLTESI DERGISI 2022. [DOI: 10.17517/ksutfd.1067018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Monosodium glutamat (MSG) 1800’lü yıllardan beri lezzet artırıcı katkı maddesi olarak, işlenmiş ve paketlenmiş tuzlu veya tatlı gıdalarda kullanılmaktadır. Yapılan birçok çalışma MSG kullanımının çok sayıda yapısal ve fonksiyonel bozukluklara yol açabileceğini ortaya çıkarmıştır. Son yıllarda MSG kullanımının çok artması gıda güvenliği konusunda endişelerinde artmasına neden olmuştur.
Collapse
|
13
|
Abdul-Hamid M, Galaly SR, Ahmed RR, Hamdalla HM. Histopathological and biochemical effect of quercetin on monosodium glutamate supplementation-induced testicular toxicity. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2021. [DOI: 10.1186/s43088-021-00167-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Background
Despite the wide usage of monosodium glutamate (MSG) as a flavor enhancer in many types of food, it has been reported as a toxic agent to humans and experimental animals. It also adversely influences male fertility. Several research studies attributed detrimental effects of MSG on reproductive organs to oxidative stress. The current study investigated the effects of MSG on testis and the potential role of quercetin in attenuating them.
Results
MSG-treated rats showed a considerable elevation in lipid peroxidation level and reduction in glutathione concentration, superoxide dismutase (SOD), and glutathione peroxidase (GPx) activities in the homogenate of testis tissues. Treatment with quercetin in combination with MSG provided significant protection. When QU was used, the toxic side effects were significantly reduced, with a considerable reduction in lipid peroxidation and an increase in SOD and GPx activities, and glutathione concentration.
Conclusions
Quercetin may be used in combination with MSG to improve the histopathological, ultrastructure, oxidative stress, and biochemical parameters of testicular toxicity induced by MSG due to its antioxidant effects.
Graphical abstract
Collapse
|
14
|
Cai C, Sivak A, Davenport MH. Effects of prenatal artificial sweeteners consumption on birth outcomes: a systematic review and meta-analysis. Public Health Nutr 2021; 24:5024-5033. [PMID: 33441213 PMCID: PMC11082813 DOI: 10.1017/s1368980021000173] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/21/2020] [Accepted: 01/06/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To examine the influence of prenatal artificial sweetener (AS) consumption on birth outcomes. DESIGN Systematic review and meta-analysis. SETTING Online databases (Medline, CINAHL, Embase, Cochrane Library, Scopus, Web of Science, FSTA - the food resource database, and ClinicalTrials.gov) were searched up to 9 April 2020. Studies of all designs (except case studies and reviews) were eligible, which contained information on the relevant population (pregnant women), intervention/exposure (any AS consumption), comparator (no AS consumption) and birth outcomes (preterm delivery, gestational age, birth weight). RESULTS From 677 citations, ten cohort studies and one randomised controlled trial (n 138 007 women) were included. 'Low' to 'very low' certainty evidence revealed that daily consumption of AS was associated with an increased risk of preterm delivery (three studies, n 129 009; risk ratio = 1·18, 95 % CI 1·09, 1·28, I2 = 9 %), a 24 g increase in birth weight (three studies, n 64 417; mean difference (MD): 23·74 g, 95 % CI 0·89, 45·58, I2 = 0 %) and a 0·11 week decrease in gestational age (three studies, n 64 417; MD: -0·11 weeks, 95 % CI -0·19, -0·03, I2 = 0 %). CONCLUSIONS 'Low' to 'very low' certainty evidence suggests daily AS consumption during pregnancy is associated with an increased risk of preterm delivery, increased birth weight and decreased gestational age. Additional 'high'-quality research is urgently needed to further assess these relationships.PROSPERO registration number: CRD42019136728.
Collapse
Affiliation(s)
- Chenxi Cai
- School of Public Heath, Xiamen University, Xiamen, Fujian, China
- Program for Pregnancy and Postpartum Health, Edmonton, Alberta, Canada
- Physical Activity and Diabetes Laboratory, University of Alberta, Edmonton, Alberta, Canada
- Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, Alberta, Canada
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, Alberta, Canada
- Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Allison Sivak
- H.T. Coutts Education & Physical Education Library, University of Alberta, Edmonton, Alberta, Canada
| | - Margie H Davenport
- Program for Pregnancy and Postpartum Health, Edmonton, Alberta, Canada
- Physical Activity and Diabetes Laboratory, University of Alberta, Edmonton, Alberta, Canada
- Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, Alberta, Canada
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, Alberta, Canada
- Alberta Diabetes Institute, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
15
|
Normand M, Ritz C, Mela D, Raben A. Low-energy sweeteners and body weight: a citation network analysis. BMJ Nutr Prev Health 2021; 4:319-332. [PMID: 34308140 PMCID: PMC8258071 DOI: 10.1136/bmjnph-2020-000210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE Reviews on the relationship of low-energy sweeteners (LES) with body weight (BW) have reached widely differing conclusions. To assess possible citation bias, citation analysis was used to quantify the relevant characteristics of cited articles, and explore citation patterns in relation to review conclusions. DESIGN A systematic search identified reviews published from January 2010 to March 2020. Different characteristics (for example, type of review or research, journal impact factor, conclusions) were extracted from the reviews and cited articles. Logistic regression was used to estimate likelihood of articles with particular characteristics being cited in reviews. A qualitative network analysis linked reviews sub-grouped by conclusions with the types of articles they cited. MAIN OUTCOME MEASURES (OR; 95% CI) for likelihood that articles with particular characteristics were cited as evidence in reviews. RESULTS From 33 reviews identified, 183 different articles were cited (including other reviews). Narrative reviews were 62% less likely to be cited than systematic reviews with meta-analysis (OR 0.38; 0.16 to 0.86; p=0.03). Likelihood of being cited was higher for evidence on children than adults (OR 2.27; 1.59 to 3.25; p<0.0001), and with increased journal impact factor (OR 1.15; 1.00 to 1.31; p=0.04). No other factors were statistically significant in the main analysis, and few factors were significant in subgroup analyses. Network analysis showed that reviews concluding a beneficial relationship of LES with BW cited mainly randomised controlled trials, whereas reviews concluding an adverse relationship cited mainly observational studies. CONCLUSIONS Overall reference to the available evidence across reviews appears largely arbitrary, making citation bias likely. Differences in the conclusions of individual reviews map onto different types of evidence cited. Overall, inconsistent and selective use of the available evidence may account for the diversity of conclusions in reviews on LES and BW. TRIAL REGISTRATION NUMBER Prior to data analysis, the protocol was registered with the Open Science Framework (https://osf.io/9ghws).
Collapse
Affiliation(s)
- Mie Normand
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | | | - Anne Raben
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
- Steno Diabetes Center Copenhagen, Copenhagen, Denmark
| |
Collapse
|
16
|
Long-Term Aspartame Administration Leads to Fibrosis, Inflammasome Activation, and Gluconeogenesis Impairment in the Liver of Mice. BIOLOGY 2021; 10:biology10020082. [PMID: 33499218 PMCID: PMC7911935 DOI: 10.3390/biology10020082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Aspartame is an artificial sweetener used in foods and beverages worldwide. However, it is linked to oxidative stress, inflammation, and liver damage through mechanisms that are not fully elucidated yet. This work aimed to investigate the effects of long-term administration of aspartame on the oxidative and inflammatory mechanisms associated with liver fibrosis progression in mice. METHODS Mice were divided into two groups with six animals each: control and aspartame. Aspartame (80 mg/kg, via oral) or vehicle was administrated for 12 weeks. RESULTS Aspartame caused liver damage and elevated serum transaminase levels. Aspartame also generated liver fibrosis, as evidenced by histology analysis, and pro-fibrotic markers' upregulation, including transforming growth factor β 1, collagen type I alpha 1, and alpha-smooth muscle actin. Furthermore, aspartame reduced nuclear factor erythroid 2-related factor 2 (Nrf2) activation and enzymatic antioxidant activity and increased lipid peroxidation, which triggered NOD-like receptor containing protein 3 (NLRP3) inflammasome activation and p53 induction. Furthermore, aspartame reduced peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) levels, possibly through p53 activation. This PGC-1α deficiency could be responsible for the changes in lipid profile in serum, total lipid accumulation, and gluconeogenesis impairment in liver, evidenced by the gluconeogenic enzymes' downregulation, thus causing hypoglycemia. CONCLUSIONS This work provides new insights to understand the mechanisms related to the adverse effects of aspartame on liver tissue.
Collapse
|
17
|
Changes in Non-Nutritive Sweetener Consumption Patterns in Response to a Sugar-Sweetened Beverage Reduction Intervention. Nutrients 2020; 12:nu12113428. [PMID: 33171645 PMCID: PMC7695198 DOI: 10.3390/nu12113428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 02/02/2023] Open
Abstract
Data are lacking on whether non-nutritive sweeteners (NNS) can be used as a strategy to support decreases in sugar-sweetened beverage (SSB) consumption. The purpose of this secondary analysis of a 6-month SSB-reduction intervention was to explore changes in NNS consumption patterns in Talking Health participants within the SIPsmartER (n = 101) intervention. Additionally, participant characteristics were compared for three SSB-NNS change groups (decrease SSB/increase NNS; decrease SSB/no increase in NNS; increase/no change in SSB/regardless of NNS). There was a significant increase in aspartame and total NNS intake for participants (mean daily mg increases of 37.2 ± 13.9 and 63.7 ± 18.5, respectively). With the exception of sex, no differences in participant characteristics were found between the three SSB-NNS change groups. Furthermore, no significant changes in weight or body mass index (BMI) were demonstrated between SSB-NNS change groups over time. Diet soda was the most commonly consumed source of NNS; however, other dietary sources of NNS also contributed to intake. At 6 months, intake of sucralose and saccharin were primarily from dietary sources other than diet sodas (94% and 100%, respectively). These findings suggest that NNS may be a feasible strategy to help reduce SSB consumption. This study supports the need to consistently quantify and identify NNS intake, beyond using diet soda intake as a proxy for NNS intake and grouping all NNS types into one variable, to more accurately address the potential health effects of NNS.
Collapse
|
18
|
Liu C, Yuan Y, Zhou J, Hu R, Ji L, Jiang G. Piperine ameliorates insulin resistance via inhibiting metabolic inflammation in monosodium glutamate-treated obese mice. BMC Endocr Disord 2020; 20:152. [PMID: 33028294 PMCID: PMC7542877 DOI: 10.1186/s12902-020-00617-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 08/27/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Metabolic inflammation is an essential event in obesity-induced diabetes and insulin resistance. In obesity, an increasing number of macrophages recruited into visceral adipose tissues undergo significant M1-like polarization, secreting variable amounts of pro-inflammatory cytokines and causing insulin resistance. Piperine has excellent anti-inflammatory activities and may be used in the treatment of a variety of inflammatory diseases. In this study, we investigated the effect of piperine on adipose tissue inflammation and insulin resistance in obese mice. METHODS Newborn mice were subcutaneously (s.c.) injected with monosodium glutamate (MSG) to establish a diabetes model. After 24 weeks, the MSG obese mice were divided into three groups and treated with piperine (40 mg/kg/day), metformin (150 mg/kg/day) and vehicle for 10 successive weeks, respectively. RESULTS The obesity model was successfully established, as the body weight, insulin resistance, fasting blood glucose (FBG) and dyslipidemia were significantly increased. The 10-week administration of piperine to the obese mice not only significantly decreased the elevated FBG (Model: 6.45 ± 0.41 mM; Piperine: 4.72 ± 0.44 mM, p < 0.01), serum TC (Model: 5.66 ± 0.66 mM; Piperine: 3.55 ± 0.30 mM, p < 0.01) and TG (Model: 1.41 ± 0.08 mM; Piperine: 0.94 ± 0.05 mM, p < 0.001), but also enhanced the glucose infusion rate in the hyperglycemic clamp experiment. Meanwhile, piperine improved glucose intolerance and insulin resistance in MSG obese mice. Piperine markedly decreased the total and differential white blood cell (WBC) count, the serum levels of lipopolysaccharide (LPS) and pro-inflammatory cytokines such as galectin-3 (Gal-3) and interleukin-1β (IL-1β). Furthermore, piperine clearly down-regulated the mRNA levels of pro-inflammatory cytokines and the protein levels of M1-like polarization marker CD11c and Gal-3 in adipose tissues. The in vitro study showed that piperine inhibited LPS-stimulated polarization of RAW 264.7 cells toward the M1 phenotype. CONCLUSIONS Piperine served as an immunomodulator for the treatment of obesity-related diabetes through its anti-inflammatory effects, which might be achieved by inhibiting macrophages M1 polarization in adipose tissues.
Collapse
Affiliation(s)
- Chaolong Liu
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China
| | - Yanting Yuan
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China
| | - Ji Zhou
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China
| | - Ruixin Hu
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China
| | - Lixia Ji
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China.
| | - Guohui Jiang
- School of Pharmacy, Qingdao University, Qingdao, 266021, Shandong, China.
| |
Collapse
|
19
|
Nettleton JE, Cho NA, Klancic T, Nicolucci AC, Shearer J, Borgland SL, Johnston LA, Ramay HR, Noye Tuplin E, Chleilat F, Thomson C, Mayengbam S, McCoy KD, Reimer RA. Maternal low-dose aspartame and stevia consumption with an obesogenic diet alters metabolism, gut microbiota and mesolimbic reward system in rat dams and their offspring. Gut 2020; 69:1807-1817. [PMID: 31996393 PMCID: PMC7497576 DOI: 10.1136/gutjnl-2018-317505] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 01/11/2023]
Abstract
OBJECTIVE We examined the impact of maternal low-dose aspartame and stevia consumption on adiposity, glucose tolerance, gut microbiota and mesolimbic pathway in obese dams and their offspring. DESIGN Following obesity induction, female Sprague-Dawley rats were allocated during pregnancy and lactation to: (1) high fat/sucrose diet (HFS) +water (obese-WTR); (2) HFS +aspartame (obese-APM; 5-7 mg/kg/day); (3) HFS +stevia (obese-STV; 2-3 mg/kg/day). Offspring were weaned onto control diet and water and followed until 18 weeks. Gut microbiota and metabolic outcomes were measured in dams and offspring. Cecal matter from offspring at weaning was used for faecal microbiota transplant (FMT) into germ-free (GF) mice. RESULTS Maternal APM and STV intake with a HFS diet increased body fat in offspring at weaning and body weight long-term with APM. Maternal APM/HFS consumption impaired glucose tolerance in male offspring at age 8 weeks and both APM and STV altered faecal microbiota in dams and offspring. Maternal obesity/HFS diet affected offspring adiposity and glucose tolerance more so than maternal LCS consumption at age 12 and 18 weeks. APM and STV altered expression of genes in the mesolimbic reward system that may promote consumption of a palatable diet. GF mice receiving an FMT from obese-APM and obese-STV offspring had greater weight gain and body fat and impaired glucose tolerance compared with obese-WTR. CONCLUSION Maternal low-calorie sweetener consumption alongside HFS may disrupt weight regulation, glucose control and gut microbiota in dams and their offspring most notably in early life despite no direct low-calorie sweetener consumption by offspring.
Collapse
Affiliation(s)
- Jodi E Nettleton
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Nicole A Cho
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Teja Klancic
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | | | - Jane Shearer
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada,Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - Leah A Johnston
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Hena R Ramay
- International Microbiome Centre, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Erin Noye Tuplin
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Faye Chleilat
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Carolyn Thomson
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | | | - Kathy D McCoy
- Department of Physiology and Pharmacology, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Raylene A Reimer
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada .,Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
20
|
Consumption of non-nutritive sweeteners during pregnancy. Am J Obstet Gynecol 2020; 223:211-218. [PMID: 32275895 DOI: 10.1016/j.ajog.2020.03.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 01/15/2023]
Abstract
In an effort to reduce sugar consumption to prevent diabetes mellitus and cardiovascular diseases, "sugar-free" or "no added sugar" products that substitute sugar with non-nutritive sweeteners (NNSs) (eg, Splenda, Sweet'N Low, and Stevia) have become increasingly popular. The use of these products during pregnancy has also increased, with approximately 30% of pregnant women reporting intentional NNS consumption. In clinical studies with nonpregnant participants and animal models, NNSs were shown to alter gut hormonal secretion, glucose absorption, appetite, kidney function, in vitro insulin secretion, adipogenesis, and microbiome dysbiosis of gut bacteria. In pregnant animal models, NNS consumption has been associated with altered sweet taste preference later in life and metabolic dysregulations in the offspring (eg, elevated body mass index, increased risk of obesity, microbiome dysbiosis, and abnormal liver function tests). Despite the accumulating evidence, no specific guidelines for NNS consumption are available for pregnant women. Furthermore, there are limited clinical studies on the effects of NNS consumption during pregnancy and postpartum and long-term outcomes in the offspring.
Collapse
|
21
|
Effects of Non-nutritive Sweeteners on Sweet Taste Processing and Neuroendocrine Regulation of Eating Behavior. Curr Nutr Rep 2020; 9:278-289. [PMID: 32588329 DOI: 10.1007/s13668-020-00323-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Non-nutritive sweeteners (NNS) are increasingly used as a replacement for nutritive sugars as means to quench the desire for "sweets" while contributing few or no dietary calories. However, there is concern that NNS may uncouple the evolved relationship between sweet taste and post-ingestive neuroendocrine signaling. In this review, we examine the effects of NNS exposure on neural and peripheral systems in humans. RECENT FINDINGS NNS exposure during early development may influence sweet taste preferences, and NNS consumption might increase motivation for sweet foods. Neuroimaging studies provide evidence that NNS elicit differential neuronal responsivity in areas related to reward and satiation, compared with caloric sweeteners. Findings are heterogenous regarding whether NNS affect physiological responses. Additional studies are warranted regarding the consequences of NNS on metabolic outcomes and neuroendocrine pathways. Given the widespread popularity of NNS, future studies are essential to establish their role in long-term health.
Collapse
|
22
|
Metabolic and behavioural effects of prenatal exposure to non-nutritive sweeteners: A systematic review and meta-analysis of rodent models. Physiol Behav 2020; 213:112696. [DOI: 10.1016/j.physbeh.2019.112696] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/17/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022]
|
23
|
Goran MI, Plows JF, Ventura EE. Effects of consuming sugars and alternative sweeteners during pregnancy on maternal and child health: evidence for a secondhand sugar effect. Proc Nutr Soc 2019; 78:262-271. [PMID: 30501650 PMCID: PMC7441786 DOI: 10.1017/s002966511800263x] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Consumption of sugar and alternative low- or no-energy sweeteners has increased in recent decades. However, it is still uncertain how consumption of sugar and alternative sweeteners during pregnancy affects pregnancy outcomes and long-term offspring health. This review aims to collate the available evidence surrounding the consequences of sugar and alternative sweetener consumption during pregnancy, a so-called secondhand sugar effect. We found evidence that sugar consumption during pregnancy may contribute to increased gestational weight gain and the development of pregnancy complications, including gestational diabetes, preeclampsia and preterm birth. Further, we found a growing body of the animal and human evidence that maternal sugar intake during pregnancy may impact neonatal and childhood metabolism, taste perception and obesity risk. Emerging evidence also suggests that both maternal and paternal preconception sugar intakes are linked to offspring metabolic outcomes, perhaps via epigenetic alterations to the germline. While there have been fewer studies of the impacts of alternative sweetener consumption before and during pregnancy, there is some evidence to suggest effects on infant outcomes including preterm birth risk, increased infant body composition and offspring preference for sweet foods, although mechanisms are unclear. We conclude that preconception and gestational sugar and alternative sweetener consumption may negatively impact pregnancy outcomes and offspring health and that there is a need for further observational, mechanistic and intervention research in this area.
Collapse
Affiliation(s)
- M. I. Goran
- Department of Preventive Medicine, University of Southern California Health Sciences Campus, 2250 Alcazar Street, Los Angeles, CA 90033, USA
| | - J. F. Plows
- Department of Preventive Medicine, University of Southern California Health Sciences Campus, 2250 Alcazar Street, Los Angeles, CA 90033, USA
| | - E. E. Ventura
- Department of Preventive Medicine, University of Southern California Health Sciences Campus, 2250 Alcazar Street, Los Angeles, CA 90033, USA
| |
Collapse
|
24
|
Obesity: Pathophysiology, monosodium glutamate-induced model and anti-obesity medicinal plants. Biomed Pharmacother 2019; 111:503-516. [DOI: 10.1016/j.biopha.2018.12.108] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/13/2018] [Accepted: 12/23/2018] [Indexed: 02/08/2023] Open
|
25
|
Simcocks AC, Jenkin KA, O’Keefe L, Samuel CS, Mathai ML, McAinch AJ, Hryciw DH. Atypical cannabinoid ligands O-1602 and O-1918 administered chronically in diet-induced obesity. Endocr Connect 2019; 8:203-216. [PMID: 30707678 PMCID: PMC6391900 DOI: 10.1530/ec-18-0535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/01/2019] [Indexed: 01/01/2023]
Abstract
Atypical cannabinoid compounds O-1602 and O-1918 are ligands for the putative cannabinoid receptors G protein-coupled receptor 55 and G protein-coupled receptor 18. The role of O-1602 and O-1918 in attenuating obesity and obesity-related pathologies is unknown. Therefore, we aimed to determine the role that either compound had on body weight and body composition, renal and hepatic function in diet-induced obesity. Male Sprague-Dawley rats were fed a high-fat diet (40% digestible energy from lipids) or a standard chow diet for 10 weeks. In a separate cohort, male Sprague-Dawley rats were fed a high-fat diet for 9 weeks and then injected daily with 5 mg/kg O-1602, 1 mg/kg O-1918 or vehicle (0.9% saline/0.75% Tween 80) for a further 6 weeks. Our data demonstrated that high-fat feeding upregulates whole kidney G protein receptor 55 expression. In diet-induced obesity, we also demonstrated O-1602 reduces body weight, body fat and improves albuminuria. Despite this, treatment with O-1602 resulted in gross morphological changes in the liver and kidney. Treatment with O-1918 improved albuminuria, but did not alter body weight or fat composition. In addition, treatment with O-1918 also upregulated circulation of pro-inflammatory cytokines including IL-1α, IL-2, IL-17α, IL-18 and RANTES as well as plasma AST. Thus O-1602 and O-1918 appear not to be suitable treatments for obesity and related comorbidities, due to their effects on organ morphology and pro-inflammatory signaling in obesity.
Collapse
Affiliation(s)
- Anna C Simcocks
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
| | - Kayte A Jenkin
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
- School of Science and Health, Western Sydney University, Campbelltown, New South Wales, Australia
| | - Lannie O’Keefe
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
| | - Chrishan S Samuel
- Cardiovascular Disease Program, Biomedicine Discovery Institute and Department of Pharmacology, Monash University, Clayton, Victoria, Australia
| | - Michael L Mathai
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
- The Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, Victoria, Australia
| | - Andrew J McAinch
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), College of Health and Biomedicine, Victoria University, Melbourne, Victoria, Australia
| | - Deanne H Hryciw
- Institute for Health and Sport, Victoria University, St Albans campus, Melbourne, Victoria, Australia
- School of Environment and Sciences, Griffith University, Nathan, Queensland, Australia
| |
Collapse
|
26
|
Al-Qudsi FM, Al-Hasan MM. In utero exposure to commercial artificial sweeteners affects mice development and mammary gland structure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5054-5064. [PMID: 30607847 DOI: 10.1007/s11356-018-3935-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 12/06/2018] [Indexed: 06/09/2023]
Abstract
Commercial artificial sweeteners present in the market are usually made of combination of nutritive and artificial sweeteners such as sorbitol and aspartame. The aim of this research was to study the effect of in utero exposure to commercial artificial sweeteners on the mouse development and on mammary gland in different stages (18-day embryos and 4-week-old mice). Pregnant mice of treated groups were given 50 mg/kg body weight of commercial artificial sweetener. The dose was given on day 1 of pregnancy until 3-week nursing, while the controls were given distilled water. Congenital malformations were seen in treated 18-day fetus and 4-week-old mice, such as a significant decrease in the diameter of the placenta and the weight of the fetuses, while in 4-week-old mice, a significant decrease in the length of the body, limbs, and tail was seen compared to the controls. The result of this study showed that in 18-day fetuses, clusters of mammary gland in the treated mice seemed to be more differentiated than the controls. In 4-week-old mice, the number of mammary gland ducts in the treated group was significantly more than the control group, and the lumen of the ducts in the treated sections seemed to be narrower than the controls, also many regressing terminal end buds (TEBs) were seen in the treated group. A significant increase in the mammary gland area of treated group was seen compared to the controls.
Collapse
Affiliation(s)
- Fatma M Al-Qudsi
- Biology Department, King abdulaziz University, P.O. Box 42650, Jeddah, 21551, Saudi Arabia.
| | - Manar M Al-Hasan
- Biology Department, King abdulaziz University, P.O. Box 42650, Jeddah, 21551, Saudi Arabia
| |
Collapse
|
27
|
Early-Life Exposure to Non-Nutritive Sweeteners and the Developmental Origins of Childhood Obesity: Global Evidence from Human and Rodent Studies. Nutrients 2018; 10:nu10020194. [PMID: 29439389 PMCID: PMC5852770 DOI: 10.3390/nu10020194] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/05/2018] [Accepted: 02/07/2018] [Indexed: 12/18/2022] Open
Abstract
Non-nutritive sweeteners (NNS) are increasingly consumed by children and pregnant women around the world, yet their long-term health impact is unclear. Here, we review an emerging body of evidence suggesting that early-life exposure to NNS may adversely affect body composition and cardio-metabolic health. Some observational studies suggest that children consuming NNS are at increased risk for obesity-related outcomes; however, others find no association or provide evidence of confounding. Fewer studies have examined prenatal NNS exposure, with mixed results from different analytical approaches. There is a paucity of RCTs evaluating NNS in children, yielding inconsistent results that can be difficult to interpret due to study design limitations (e.g., choice of comparator, multifaceted interventions). The majority of this research has been conducted in high-income countries. Some rodent studies demonstrate adverse metabolic effects from NNS, but most have used extreme doses that are not relevant to humans, and few have distinguished prenatal from postnatal exposure. Most studies focus on synthetic NNS in beverages, with few examining plant-derived NNS or NNS in foods. Overall, there is limited and inconsistent evidence regarding the impact of early-life NNS exposure on the developmental programming of obesity and cardio-metabolic health. Further research and mechanistic studies are needed to elucidate these effects and inform dietary recommendations for expectant mothers and children worldwide.
Collapse
|
28
|
Finamor I, Pérez S, Bressan CA, Brenner CE, Rius-Pérez S, Brittes PC, Cheiran G, Rocha MI, da Veiga M, Sastre J, Pavanato MA. Chronic aspartame intake causes changes in the trans-sulphuration pathway, glutathione depletion and liver damage in mice. Redox Biol 2017; 11:701-707. [PMID: 28187322 PMCID: PMC5300302 DOI: 10.1016/j.redox.2017.01.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 01/20/2017] [Accepted: 01/29/2017] [Indexed: 01/23/2023] Open
Abstract
No-caloric sweeteners, such as aspartame, are widely used in various food and beverages to prevent the increasing rates of obesity and diabetes mellitus, acting as tools in helping control caloric intake. Aspartame is metabolized to phenylalanine, aspartic acid, and methanol. Our aim was to study the effect of chronic administration of aspartame on glutathione redox status and on the trans-sulphuration pathway in mouse liver. Mice were divided into three groups: control; treated daily with aspartame for 90 days; and treated with aspartame plus N-acetylcysteine (NAC). Chronic administration of aspartame increased plasma alanine aminotransferase (ALT) and aspartate aminotransferase activities and caused liver injury as well as marked decreased hepatic levels of reduced glutathione (GSH), oxidized glutathione (GSSG), γ-glutamylcysteine (γ-GC), and most metabolites of the trans-sulphuration pathway, such as cysteine, S-adenosylmethionine (SAM), and S-adenosylhomocysteine (SAH). Aspartame also triggered a decrease in mRNA and protein levels of the catalytic subunit of glutamate cysteine ligase (GCLc) and cystathionine γ-lyase, and in protein levels of methionine adenosyltransferase 1A and 2A. N-acetylcysteine prevented the aspartame-induced liver injury and the increase in plasma ALT activity as well as the decrease in GSH, γ-GC, cysteine, SAM and SAH levels and GCLc protein levels. In conclusion, chronic administration of aspartame caused marked hepatic GSH depletion, which should be ascribed to GCLc down-regulation and decreased cysteine levels. Aspartame triggered blockade of the trans-sulphuration pathway at two steps, cystathionine γ-lyase and methionine adenosyltransferases. NAC restored glutathione levels as well as the impairment of the trans-sulphuration pathway. Aspartame down-regulates glutamate cysteine ligase and decreased cysteine levels. Aspartame blockades the trans-sulphuration pathways.
Collapse
Affiliation(s)
- Isabela Finamor
- Department of Physiology, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Salvador Pérez
- Department of Physiology, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Caroline A Bressan
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Carlos E Brenner
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Sergio Rius-Pérez
- Department of Physiology, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Patricia C Brittes
- University Hospital of Santa Maria, Federal University of Santa Maria,, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Gabriele Cheiran
- Department of Morphology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Maria I Rocha
- Department of Morphology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Marcelo da Veiga
- Department of Morphology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| | - Juan Sastre
- Department of Physiology, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Maria A Pavanato
- Department of Physiology and Pharmacology, Federal University of Santa Maria, Av. Roraima, 1000, 97105900 Santa Maria, Rio Grande do Sul, Brazil
| |
Collapse
|
29
|
Sylvetsky AC, Blau JE, Rother KI. Understanding the metabolic and health effects of low-calorie sweeteners: methodological considerations and implications for future research. Rev Endocr Metab Disord 2016; 17:187-94. [PMID: 26936185 PMCID: PMC5010791 DOI: 10.1007/s11154-016-9344-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Consumption of foods, beverages, and packets containing low-calorie sweeteners (LCS) has increased markedly across gender, age, race/ethnicity, weight status, and socio-economic subgroups. However, well-controlled intervention studies rigorously evaluating the health effects of LCS in humans are limited. One of the key questions is whether LCS are indeed a beneficial strategy for weight management and prevention of obesity. The current review discusses several methodological considerations in the design and interpretation of these studies. Specifically, we focus on the selection of study participants, inclusion of an appropriate control, importance of considering habitual LCS exposure, selection of specific LCS, dose and route of LCS administration, choice of study outcomes, and the context and generalizability of the study findings. These critical considerations will guide the design of future studies and thus assist in understanding the health effects of LCS.
Collapse
Affiliation(s)
- Allison C Sylvetsky
- Department of Exercise and Nutrition Sciences, The George Washington University, 950 New Hampshire Avenue NW, Washington, DC, 20052, USA
- Section on Pediatric Diabetes and Metabolism, NIDDK, NIH, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD, 20892, USA
| | - Jenny E Blau
- Section on Pediatric Diabetes and Metabolism, NIDDK, NIH, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD, 20892, USA
| | - Kristina I Rother
- Section on Pediatric Diabetes and Metabolism, NIDDK, NIH, 9000 Rockville Pike, Building 10, Room 8C432A, Bethesda, MD, 20892, USA.
| |
Collapse
|
30
|
Fowler SPG. Low-calorie sweetener use and energy balance: Results from experimental studies in animals, and large-scale prospective studies in humans. Physiol Behav 2016; 164:517-523. [PMID: 27129676 DOI: 10.1016/j.physbeh.2016.04.047] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/21/2022]
Abstract
For more than a decade, pioneering animal studies conducted by investigators at Purdue University have provided evidence to support a central thesis: that the uncoupling of sweet taste and caloric intake by low-calorie sweeteners (LCS) can disrupt an animal's ability to predict the metabolic consequences of sweet taste, and thereby impair the animal's ability to respond appropriately to sweet-tasting foods. These investigators' work has been replicated and extended internationally. There now exists a body of evidence, from a number of investigators, that animals chronically exposed to any of a range of LCSs - including saccharin, sucralose, acesulfame potassium, aspartame, or the combination of erythritol+aspartame - have exhibited one or more of the following conditions: increased food consumption, lower post-prandial thermogenesis, increased weight gain, greater percent body fat, decreased GLP-1 release during glucose tolerance testing, and significantly greater fasting glucose, glucose area under the curve during glucose tolerance testing, and hyperinsulinemia, compared with animals exposed to plain water or - in many cases - even to calorically-sweetened foods or liquids. Adverse impacts of LCS have appeared diminished in animals on dietary restriction, but were pronounced among males, animals genetically predisposed to obesity, and animals with diet-induced obesity. Impacts have been especially striking in animals on high-energy diets: diets high in fats and sugars, and diets which resemble a highly-processed 'Western' diet, including trans-fatty acids and monosodium glutamate. These studies have offered both support for, and biologically plausible mechanisms to explain, the results from a series of large-scale, long-term prospective observational studies conducted in humans, in which longitudinal increases in weight, abdominal adiposity, and incidence of overweight and obesity have been observed among study participants who reported using diet sodas and other LCS-sweetened beverages daily or more often at baseline. Furthermore, frequent use of diet beverages has been associated prospectively with increased long-term risk and/or hazard of a number of cardiometabolic conditions usually considered to be among the sequelae of obesity: hypertension, metabolic syndrome, diabetes, depression, kidney dysfunction, heart attack, stroke, and even cardiovascular and total mortality. Reverse causality does not appear to explain fully the increased risk observed across all of these studies, the majority of which have included key potential confounders as covariates. These have included body mass index or waist circumference at baseline; total caloric intake and specific macronutrient intake; physical activity; smoking; demographic and other relevant risk factors; and/or family history of disease. Whether non-LCS ingredients in diet beverages might have independently increased the weight gain and/or cardiometabolic risk observed among frequent consumers of LCS-sweetened beverages deserves further exploration. In the meantime, however, there is a striking congruence between results from animal research and a number of large-scale, long-term observational studies in humans, in finding significantly increased weight gain, adiposity, incidence of obesity, cardiometabolic risk, and even total mortality among individuals with chronic, daily exposure to low-calorie sweeteners - and these results are troubling.
Collapse
Affiliation(s)
- Sharon P G Fowler
- Department of Medicine, The University of Texas Health Science Center at San Antonio, Texas, United States.
| |
Collapse
|
31
|
Nettleton JE, Reimer RA, Shearer J. Reshaping the gut microbiota: Impact of low calorie sweeteners and the link to insulin resistance? Physiol Behav 2016; 164:488-493. [PMID: 27090230 DOI: 10.1016/j.physbeh.2016.04.029] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 04/12/2016] [Accepted: 04/13/2016] [Indexed: 02/07/2023]
Abstract
Disruption in the gut microbiota is now recognized as an active contributor towards the development of obesity and insulin resistance. This review considers one class of dietary additives known to influence the gut microbiota that may predispose susceptible individuals to insulin resistance - the regular, long-term consumption of low-dose, low calorie sweeteners. While the data are controversial, mounting evidence suggests that low calorie sweeteners should not be dismissed as inert in the gut environment. Sucralose, aspartame and saccharin, all widely used to reduce energy content in foods and beverages to promote satiety and encourage weight loss, have been shown to disrupt the balance and diversity of gut microbiota. Fecal transplant experiments, wherein microbiota from low calorie sweetener consuming hosts are transferred into germ-free mice, show that this disruption is transferable and results in impaired glucose tolerance, a well-known risk factor towards the development of a number of metabolic disease states. As our understanding of the importance of the gut microbiota in metabolic health continues to grow, it will be increasingly important to consider the impact of all dietary components, including low calorie sweeteners, on gut microbiota and metabolic health.
Collapse
Affiliation(s)
- Jodi E Nettleton
- Faculty of Kinesiology, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
| | - Raylene A Reimer
- Faculty of Kinesiology, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada; Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada.
| | - Jane Shearer
- Faculty of Kinesiology, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada; Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada.
| |
Collapse
|
32
|
Ideta T, Shirakami Y, Miyazaki T, Kochi T, Sakai H, Moriwaki H, Shimizu M. The Dipeptidyl Peptidase-4 Inhibitor Teneligliptin Attenuates Hepatic Lipogenesis via AMPK Activation in Non-Alcoholic Fatty Liver Disease Model Mice. Int J Mol Sci 2015; 16:29207-18. [PMID: 26670228 PMCID: PMC4691103 DOI: 10.3390/ijms161226156] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/24/2015] [Accepted: 11/30/2015] [Indexed: 12/15/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD), which is strongly associated with metabolic syndrome, is increasingly a major cause of hepatic disorder. Dipeptidyl peptidase (DPP)-4 inhibitors, anti-diabetic agents, are expected to be effective for the treatment of NAFLD. In the present study, we established a novel NAFLD model mouse using monosodium glutamate (MSG) and a high-fat diet (HFD) and investigated the effects of a DPP-4 inhibitor, teneligliptin, on the progression of NAFLD. Male MSG/HFD-treated mice were divided into two groups, one of which received teneligliptin in drinking water. Administration of MSG and HFD caused mice to develop severe fatty changes in the liver, but teneligliptin treatment improved hepatic steatosis and inflammation, as evaluated by the NAFLD activity score. Serum alanine aminotransferase and intrahepatic triglyceride levels were significantly decreased in teneligliptin-treated mice (p < 0.05). Hepatic mRNA levels of the genes involved in de novo lipogenesis were significantly downregulated by teneligliptin (p < 0.05). Moreover, teneligliptin increased hepatic expression levels of phosphorylated AMP-activated protein kinase (AMPK) protein. These findings suggest that teneligliptin attenuates lipogenesis in the liver by activating AMPK and downregulating the expression of genes involved in lipogenesis. DPP-4 inhibitors may be effective for the treatment of NAFLD and may be able to prevent its progression to non-alcoholic steatohepatitis.
Collapse
Affiliation(s)
- Takayasu Ideta
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Yohei Shirakami
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
- Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Tsuneyuki Miyazaki
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Takahiro Kochi
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Hiroyasu Sakai
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Hisataka Moriwaki
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Masahito Shimizu
- Department of Gastroenterology, Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| |
Collapse
|
33
|
Araújo JR, Martel F, Keating E. Exposure to non-nutritive sweeteners during pregnancy and lactation: Impact in programming of metabolic diseases in the progeny later in life. Reprod Toxicol 2014; 49:196-201. [PMID: 25263228 DOI: 10.1016/j.reprotox.2014.09.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/11/2014] [Accepted: 09/15/2014] [Indexed: 12/11/2022]
Abstract
The nutritional environment during embryonic, fetal and neonatal development plays a crucial role in the offspring's risk of developing diseases later in life. Although non-nutritive sweeteners (NNS) provide sweet taste without contributing to energy intake, animal studies showed that long-term consumption of NSS, particularly aspartame, starting during the perigestational period may predispose the offspring to develop obesity and metabolic syndrome later in life. In this paper, we review the impact of NNS exposure during the perigestational period on the long-term disease risk of the offspring, with a particular focus on metabolic diseases. Some mechanisms underlying NNS adverse metabolic effects have been proposed, such as an increase in intestinal glucose absorption, alterations in intestinal microbiota, induction of oxidative stress and a dysregulation of appetite and reward responses. The data reviewed herein suggest that NNS consumption by pregnant and lactating women should be looked with particular caution and requires further research.
Collapse
Affiliation(s)
- João Ricardo Araújo
- Department of Biochemistry (U38-FCT), Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal.
| | - Fátima Martel
- Department of Biochemistry (U38-FCT), Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Elisa Keating
- Department of Biochemistry (U38-FCT), Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; Center for Biotechnology and Fine Chemistry, School of Biotechnology, Portuguese Catholic University, 4200-702 Porto, Portugal
| |
Collapse
|
34
|
Biochemical alterations during the obese-aging process in female and male monosodium glutamate (MSG)-treated mice. Int J Mol Sci 2014; 15:11473-94. [PMID: 24979131 PMCID: PMC4139794 DOI: 10.3390/ijms150711473] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 06/11/2014] [Accepted: 06/12/2014] [Indexed: 01/07/2023] Open
Abstract
Obesity, from children to the elderly, has increased in the world at an alarming rate over the past three decades, implying long-term detrimental consequences for individual’s health. Obesity and aging are known to be risk factors for metabolic disorder development, insulin resistance and inflammation, but their relationship is not fully understood. Prevention and appropriate therapies for metabolic disorders and physical disabilities in older adults have become a major public health challenge. Hence, the aim of this study was to evaluate inflammation markers, biochemical parameters and glucose homeostasis during the obese-aging process, to understand the relationship between obesity and health span during the lifetime. In order to do this, the monosodium glutamate (MSG) obesity mice model was used, and data were evaluated at 4, 8, 12, 16 and 20 months in both female and male mice. Our results showed that obesity was a major factor contributing to premature alterations in MSG-treated mice metabolism; however, at older ages, obesity effects were attenuated and MSG-mice became more similar to normal mice. At a younger age (four months old), the Lee index, triglycerides, total cholesterol, TNF-α and transaminases levels increased; while adiponectin decreased and glucose tolerance and insulin sensitivity levels were remarkably altered. However, from 16 months old-on, the Lee index and TNF-α levels diminished significantly, while adiponectin increased, and glucose and insulin homeostasis was recovered. In summary, MSG-treated obese mice showed metabolic changes and differential susceptibility by gender throughout life and during the aging process. Understanding metabolic differences between genders during the lifespan will allow the discovery of specific preventive treatment strategies for chronic diseases and functional decline.
Collapse
|
35
|
The protective effect of N-acetylcysteine on oxidative stress in the brain caused by the long-term intake of aspartame by rats. Neurochem Res 2014; 39:1681-90. [PMID: 24970110 DOI: 10.1007/s11064-014-1360-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/28/2014] [Accepted: 06/10/2014] [Indexed: 10/25/2022]
Abstract
Long-term intake of aspartame at the acceptable daily dose causes oxidative stress in rodent brain mainly due to the dysregulation of glutathione (GSH) homeostasis. N-Acetylcysteine provides the cysteine that is required for the production of GSH, being effective in treating disorders associated with oxidative stress. We investigated the effects of N-acetylcysteine treatment (150 mg kg(-1), i.p.) on oxidative stress biomarkers in rat brain after chronic aspartame administration by gavage (40 mg kg(-1)). N-Acetylcysteine led to a reduction in the thiobarbituric acid reactive substances, lipid hydroperoxides, and carbonyl protein levels, which were increased due to aspartame administration. N-Acetylcysteine also resulted in an elevation of superoxide dismutase, glutathione peroxidase, glutathione reductase activities, as well as non-protein thiols, and total reactive antioxidant potential levels, which were decreased after aspartame exposure. However, N-acetylcysteine was unable to reduce serum glucose levels, which were increased as a result of aspartame administration. Furthermore, catalase and glutathione S-transferase, whose activities were reduced due to aspartame treatment, remained decreased even after N-acetylcysteine exposure. In conclusion, N-acetylcysteine treatment may exert a protective effect against the oxidative damage in the brain, which was caused by the long-term consumption of the acceptable daily dose of aspartame by rats.
Collapse
|
36
|
Abu-Taweel GM, A ZM, Ajarem JS, Ahmad M. Cognitive and biochemical effects of monosodium glutamate and aspartame, administered individually and in combination in male albino mice. Neurotoxicol Teratol 2014; 42:60-7. [PMID: 24556450 DOI: 10.1016/j.ntt.2014.02.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 02/09/2014] [Accepted: 02/10/2014] [Indexed: 12/20/2022]
Abstract
The present study was designed to investigate the in vivo effects of monosodium glutamate (MSG) and aspartame (ASM) individually and in combination on the cognitive behavior and biochemical parameters like neurotransmitters and oxidative stress indices in the brain tissue of mice. Forty male Swiss albino mice were randomly divided into four groups of ten each and were exposed to MSG and ASM through drinking water for one month. Group I was the control and was given normal tap water. Groups II and III received MSG (8 mg/kg) and ASM (32 mg/kg) respectively dissolved in tap water. Group IV received MSG and ASM together in the same doses. After the exposure period, the animals were subjected to cognitive behavioral tests in a shuttle box and a water maze. Thereafter, the animals were sacrificed and the neurotransmitters and oxidative stress indices were estimated in their forebrain tissue. Both MSG and ASM individually as well as in combination had significant disruptive effects on the cognitive responses, memory retention and learning capabilities of the mice in the order (MSG+ASM)>ASM>MSG. Furthermore, while MSG and ASM individually were unable to alter the brain neurotransmitters and the oxidative stress indices, their combination dose (MSG+ASM) decreased significantly the levels of neurotransmitters (dopamine and serotonin) and it also caused oxidative stress by increasing the lipid peroxides measured in the form of thiobarbituric acid-reactive substances (TBARS) and decreasing the level of total glutathione (GSH). Further studies are required to evaluate the synergistic effects of MSG and ASM on the neurotransmitters and oxidative stress indices and their involvement in cognitive dysfunctions.
Collapse
Affiliation(s)
| | - Zyadah M A
- Department of Biology, Dammam University, Saudi Arabia
| | - Jamaan S Ajarem
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Ahmad
- Department of Medical Surgical Nursing, College of Nursing, King Saud University, Riyadh, Saudi Arabia.
| |
Collapse
|
37
|
Sharma A, Prasongwattana V, Cha’on U, Selmi C, Hipkaeo W, Boonnate P, Pethlert S, Titipungul T, Intarawichian P, Waraasawapati S, Puapiroj A, Sitprija V, Reungjui S. Monosodium glutamate (MSG) consumption is associated with urolithiasis and urinary tract obstruction in rats. PLoS One 2013; 8:e75546. [PMID: 24086562 PMCID: PMC3784461 DOI: 10.1371/journal.pone.0075546] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 08/17/2013] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The peritoneal injection of monosodium glutamate (MSG) can induce kidney injury in adult rats but the effects of long-term oral intake have not been determined. METHODS We investigated the kidney histology and function in adult male Wistar rats that were fed ad libitum with a standard rat chow pellet and water with or without the addition of 2 mg/g body weight MSG/day in drinking water (n=10 per group). Both MSG-treated and control animals were sacrificed after 9 months when renal function parameters, blood and urine electrolytes, and tissue histopathology were determined. RESULTS MSG-treated rats were more prone to kidney stone formation, as represented by the alkaline urine and significantly higher activity product of calcium phosphate. Accordingly, 3/10 MSG-treated rats developed kidney stones over 9 months versus none of the control animals. Further, 2/10 MSG-treated rats but none (0/10) of the controls manifested hydronephrosis. MSG-treated rats had significantly higher levels of serum creatinine and potassium including urine output volume, urinary excretion sodium and citrate compared to controls. In contrast, MSG-treated rats had significantly lower ammonium and magnesium urinary excretion. CONCLUSION Oral MSG consumption appears to cause alkaline urine and may increase the risks of kidney stones with hydronephrosis in rats. Similar effects in humans must be verified by dedicated studies.
Collapse
Affiliation(s)
- Amod Sharma
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Vitoon Prasongwattana
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Ubon Cha’on
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Carlo Selmi
- Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center, Milan, Italy
- BIOMETRA Department, University of Milan, Milan, Italy
| | - Wiphawi Hipkaeo
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Piyanard Boonnate
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Supattra Pethlert
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Tanin Titipungul
- Department of Pathology, Mahasarakham Hospital, Mahasarakham, Thailand
| | | | - Sakda Waraasawapati
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Anucha Puapiroj
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Sirirat Reungjui
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
38
|
Collison KS, Makhoul NJ, Zaidi MZ, Inglis A, Andres BL, Ubungen R, Saleh S, Al-Mohanna FA. Prediabetic changes in gene expression induced by aspartame and monosodium glutamate in Trans fat-fed C57Bl/6 J mice. Nutr Metab (Lond) 2013; 10:44. [PMID: 23783067 PMCID: PMC3727955 DOI: 10.1186/1743-7075-10-44] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 06/03/2013] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The human diet has altered markedly during the past four decades, with the introduction of Trans hydrogenated fat, which extended the shelf-life of dietary oils and promoted a dramatic increase in elaidic acid (Trans-18.1) consumption. Food additives such as monosodium glutamate (MSG) and aspartame (ASP) were introduced to increase food palatability and reduce caloric intake. Nutrigenomics studies in small-animal models are an established platform for analyzing the interactions between various macro- and micronutrients. We therefore investigated the effects of changes in hepatic and adipose tissue gene expression induced by the food additives ASP, MSG or a combination of both additives in C57Bl/6 J mice fed a Trans fat-enriched diet. METHODS Hepatic and adipose tissue gene expression profiles, together with body characteristics, glucose parameters, serum hormone and lipid profiles were examined in C57Bl/6 J mice consuming one of the following four dietary regimens, commencing in utero via the mother's diet: [A] Trans fat (TFA) diet; [B] MSG + TFA diet; [C] ASP + TFA diet; [D] ASP + MSG + TFA diet. RESULTS Whilst dietary MSG significantly increased hepatic triglyceride and serum leptin levels in TFA-fed mice, the combination of ASP + MSG promoted the highest increase in visceral adipose tissue deposition, serum free fatty acids, fasting blood glucose, HOMA-IR, total cholesterol and TNFα levels. Microarray analysis of significant differentially expressed genes (DEGs) showed a reduction in hepatic and adipose tissue PPARGC1a expression concomitant with changes in PPARGC1a-related functional networks including PPARα, δ and γ. We identified 73 DEGs common to both adipose and liver which were upregulated by ASP + MSG in Trans fat-fed mice; and an additional 51 common DEGs which were downregulated. CONCLUSION The combination of ASP and MSG may significantly alter adiposity, glucose homeostasis, hepatic and adipose tissue gene expression in TFA-fed C57Bl/6 J mice.
Collapse
Affiliation(s)
- Kate S Collison
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Nadine J Makhoul
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Marya Z Zaidi
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Angela Inglis
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Bernard L Andres
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Rosario Ubungen
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Soad Saleh
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
| | - Futwan A Al-Mohanna
- Diabetes Research Unit, Department Cell Biology, King Faisal Specialist Hospital & Research Centre, PO BOX 3354, Riyadh 11211, Saudi Arabia
- College of Medicine, Al-Faisal University, Riyadh, Saudi Arabia
| |
Collapse
|