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Harris RBS. Sucrose solution, but not liquid sucrose diet, leads to leptin resistance irrespective of the time of day that sucrose is available. Physiol Behav 2023; 258:114002. [PMID: 36273496 DOI: 10.1016/j.physbeh.2022.114002] [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: 09/02/2022] [Revised: 10/11/2022] [Accepted: 10/18/2022] [Indexed: 11/29/2022]
Abstract
Rats offered free access to sucrose solution in addition to a sucrose-free composite diet develop leptin resistance whereas those consuming a similar amount of sucrose from a dry diet remain leptin responsive. Here we tested whether rats consuming a complete high sucrose diet in liquid form also became leptin resistant. Female Sprague Dawley rats were offered a sucrose free diet (NS), a dry high sucrose diet (HS), NS diet plus 30% sucrose solution (LiqS), NS diet in liquid form (NSLiq) or HS diet in Liquid form (HSLiq). After 30 days LiqS rats were leptin resistant, but all other groups were leptin responsive even though HSLiq rats consumed as much sucrose as LiqS rats and NSLiq rats had the greatest amount of body fat. Therefore, development of leptin resistance is dependent upon the consumption of sucrose independent of any other nutrients. Because LiqS rats consume sucrose throughout the day and night we tested whether limiting sucrose solution access to either the light or dark period prevented development of leptin resistance. Leptin resistant LiqS rats were either given free access to sucrose, had access to sucrose only at night or had access only during the day. The intake of rats with limited access was supplemented to the level of those with free access by tube-feeding. The results of this study show that leptin resistance of LiqS rats is independent of when the sucrose is consumed and is unrelated to total energy intake, body fat mass or serum leptin concentration.
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Affiliation(s)
- Ruth B S Harris
- Department of Physiology, Medical College of Georgia at Augusta University, Natural Science Annex, Room 420, 29 Peachtree Center Ave NE, Atlanta, GA 30303, United States.
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2
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Plazas Guerrero CG, Acosta Cota SDJ, Castro Sánchez FH, Vergara Jiménez MDJ, Ríos Burgueño ER, Sarmiento Sánchez JI, Picos Corrales LA, Osuna Martínez U. Evaluation of sucrose-enriched diet consumption in the development of risk factors associated to type 2 diabetes, atherosclerosis and non-alcoholic fatty liver disease in a murine model. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:651-669. [PMID: 31668088 DOI: 10.1080/09603123.2019.1680817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
Overconsumption of sucrose, the main contributor of the total added sugar intake in the world, has been associated with negative metabolic effects related to non-communicable diseases. However, this relationship continues to be a controversial topic and further studies are needed. The aim of this study was to evaluate the sucrose-enriched diet consumption in the development of risk factors associated with type 2 diabetes, atherosclerosis and non-alcoholic fatty liver disease in a murine model. Sucrose-enriched diet-fed rats showed a decrease in food, lipids and protein intake as well as in serum total cholesterol levels, an increase in carbohydrates intake, glucose, insulin, triglycerides, VLDL-c and HDL-c levels and a greater degree of insulin resistance, steatosis and non-alcoholic steatohepatitis. Our results show that sucrose-enriched diet consumption during 25 weeks contribute to the development of risk factors associated with type 2 diabetes, atherosclerosis and non-alcoholic fatty liver disease in male Wistar rats.
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Affiliation(s)
| | | | | | | | - Efrén Rafael Ríos Burgueño
- Centro de Investigación y Docencia en Ciencias de la Salud, Universidad Autónoma de Sinaloa, Culiacán de Rosales, Mexico
| | | | | | - Ulises Osuna Martínez
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán de Rosales, Mexico
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3
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De León-Ramírez YM, Lara-García M, Pacheco P, Lara-García O, Martínez-Gómez M, Cuevas-Romero E, Rodríguez-Antolín J, Nicolás-Toledo L. Histomorphological testicular changes and decrease in the sperm count in pubertal rats induced by a high-sugar diet. Ann Anat 2021; 235:151678. [PMID: 33515690 DOI: 10.1016/j.aanat.2021.151678] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/01/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND During childhood and adolescence, excessive food consumption stimulates adipose tissue expansion promoting overweight in humans, and mice. A high-sucrose diet is related to obesity and metabolic syndrome. Infertility is commonly related to these pathologies. We aim to evaluate possible histomorphological testicular changes induced by a high-sucrose diet on sperm count during the post-weaning period. METHODS Wistar male rats aged 21 days, weaned, were randomly assigned into two groups: control (fed and hydrated normally) and sugar group (fed normally but hydrated with a solution containing 30% of diluted sucrose during 30 days). At the pubertal age of 51 days, animals were killed and blood samples were taken to measure testosterone and leptin. Testicles were collected and gonadal adipose tissue and semen samples from the epididymis were excised. Testicle samples were used for morphological description using H&E staining, as well as to quantify the triacylglycerol content and the lactate dehydrogenase (LDH) expression. Semen samples were used to assess motility, viability, and sperm count. RESULTS The sugar group presented an increase in the testicular weight, but a reduction in the cross-sectional area of seminiferous tubules. Moreover, disorganization of Sertoli cells and spermatogonia, an increase in the LDH expression within the entire seminiferous tubule, and a reduced sperm count and spermatozoid motility were found. These alterations were accompanied by high serum levels of testosterone and leptin. CONCLUSIONS Our results indicate strong damage of testis by sugar consumption during early life that may lead to the onset of infertility in adulthood.
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Affiliation(s)
| | | | - Pablo Pacheco
- Instituto de Neuroetología, Universidad Veracruzana, Veracruz, México; Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Omar Lara-García
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, México
| | - Margarita Martínez-Gómez
- Instituto de Neuroetología, Universidad Veracruzana, Veracruz, México; Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México
| | - Estela Cuevas-Romero
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, México
| | - Jorge Rodríguez-Antolín
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, México
| | - Leticia Nicolás-Toledo
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, México.
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4
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Harris RBS. Consuming sucrose solution promotes leptin resistance and site specifically modifies hypothalamic leptin signaling in rats. Am J Physiol Regul Integr Comp Physiol 2020; 320:R182-R194. [PMID: 33206557 DOI: 10.1152/ajpregu.00238.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rats consuming 30% sucrose solution and a sucrose-free diet (LiqS) become leptin resistant, whereas rats consuming sucrose from a formulated diet (HS) remain leptin responsive. This study tested whether leptin resistance in LiqS rats extended beyond a failure to inhibit food intake and examined leptin responsiveness in the hypothalamus and hindbrain of rats offered HS, LiqS, or a sucrose-free diet (NS). Female LiqS Sprague-Dawley rats initially only partially compensated for the calories consumed as sucrose, but energy intake matched that of HS and NS rats when they were transferred to calorimetry cages. There was no effect of diet on energy expenditure, intrascapular brown fat tissue (IBAT) temperature, or fat pad weight. A peripheral injection of 2 mg of leptin/kg on day 23 or day 26 inhibited energy intake of HS and NS but not LiqS rats. Inhibition occurred earlier in HS rats than in NS rats and was associated with a smaller meal size. Leptin had no effect on energy expenditure but caused a transient rise in IBAT temperature of HS rats. Leptin increased the phosphorylation of signal transducer and activator of transcription 3 (pSTAT3) in the hindbrain and ventromedial hypothalamus of all rats. There was a minimal effect of leptin in the arcuate nucleus, and only the dorsomedial hypothalamus showed a correlation between pSTAT3 and leptin responsiveness. These data suggest that the primary response to leptin is inhibition of food intake and the pattern of sucrose consumption, rather than calories consumed as sucrose, causes leptin resistance associated with site-specific differences in hypothalamic leptin signaling.
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Affiliation(s)
- Ruth B S Harris
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, Georgia
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5
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Martínez-Sánchez N. There and Back Again: Leptin Actions in White Adipose Tissue. Int J Mol Sci 2020; 21:ijms21176039. [PMID: 32839413 PMCID: PMC7503240 DOI: 10.3390/ijms21176039] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/13/2022] Open
Abstract
Leptin is a hormone discovered almost 30 years ago with important implications in metabolism. It is primarily produced by white adipose tissue (WAT) in proportion to the amount of fat. The discovery of leptin was a turning point for two principle reasons: on one hand, it generated promising expectations for the treatment of the obesity, and on the other, it changed the classical concept that white adipose tissue was simply an inert storage organ. Thus, adipocytes in WAT produce the majority of leptin and, although its primary role is the regulation of fat stores by controlling lipolysis and lipogenesis, this hormone also has implications in other physiological processes within WAT, such as apoptosis, browning and inflammation. Although a massive number of questions related to leptin actions have been answered, the necessity for further clarification facilitates constantly renewing interest in this hormone and its pathways. In this review, leptin actions in white adipose tissue will be summarized in the context of obesity.
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6
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Yeh SHH, Shie FS, Liu HK, Yao HH, Kao PC, Lee YH, Chen LM, Hsu SM, Chao LJ, Wu KW, Shiao YJ, Tsay HJ. A high-sucrose diet aggravates Alzheimer's disease pathology, attenuates hypothalamic leptin signaling, and impairs food-anticipatory activity in APPswe/PS1dE9 mice. Neurobiol Aging 2019; 90:60-74. [PMID: 31879131 DOI: 10.1016/j.neurobiolaging.2019.11.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 12/14/2022]
Abstract
High-fat and high-sugar diets contribute to the prevalence of type 2 diabetes and Alzheimer's disease (AD). Although the impact of high-fat diets on AD pathogenesis has been established, the effect of high-sucrose diets (HSDs) on AD pathogenesis remains unclear. This study sought to determine the impact of HSDs on AD-related pathologies. Male APPswe/PS1dE9 (APP/PS1) transgenic and wild-type mice were provided with HSD and their cognitive and hypothalamus-related noncognitive parameters, including feeding behaviors and glycemic regulation, were compared. HSD-fed APP/PS1 mice showed increased neuroinflammation, as well as increased cortical and serum levels of amyloid-β. HSD-fed APP/PS1 mice showed aggravated obesity, hyperinsulinemia, insulin resistance, and leptin resistance, but there was no induction of hyperphagia or hyperleptinemia. Leptin-induced phosphorylation of signal transducer and activator of transcription 3 in the dorsomedial and ventromedial hypothalamus was reduced in HSD-fed APP/PS1 mice, which might be associated with attenuated food-anticipatory activity, glycemic dysregulation, and AD-related noncognitive symptoms. Our study demonstrates that HSD aggravates metabolic stresses, increases AD-related pathologies, and attenuates hypothalamic leptin signaling in APP/PS1 mice.
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Affiliation(s)
| | - Feng-Shiun Shie
- Center for Neuropsychiatric Research, National Health Research Institutes, Taiwan, Miaoli, Taiwan, R.O.C
| | - Hui-Kang Liu
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan; Ph.D. Program in Clinical Drug Development of Chinese Herbal Medicine, Taipei Medical University, Taipei, Taiwan, R.O.C
| | - Heng-Hsiang Yao
- Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan, R.O.C
| | - Pei-Chen Kao
- Center for Neuropsychiatric Research, National Health Research Institutes, Taiwan, Miaoli, Taiwan, R.O.C
| | - Yi-Heng Lee
- Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan, R.O.C.; Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei, Taiwan, R.O.C
| | - Li-Min Chen
- Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan, R.O.C
| | - Shu-Meng Hsu
- Center for Neuropsychiatric Research, National Health Research Institutes, Taiwan, Miaoli, Taiwan, R.O.C.; Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan, R.O.C
| | - Li-Jung Chao
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan, R.O.C
| | - Kuan-Wei Wu
- Institute of Biopharmaceutical Science, National Yang-Ming University, Taipei, Taiwan, R.O.C
| | - Young-Ji Shiao
- National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei, Taiwan; Ph.D. Program in Clinical Drug Development of Chinese Herbal Medicine, Taipei Medical University, Taipei, Taiwan, R.O.C.; Institute of Biopharmaceutical Science, National Yang-Ming University, Taipei, Taiwan, R.O.C..
| | - Huey-Jen Tsay
- Institute of Neuroscience, School of Life Science, National Yang-Ming University, Taipei, Taiwan, R.O.C..
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7
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Ramos‐Romero S, Hereu M, Atienza L, Amézqueta S, Casas J, Muñoz S, Medina I, Miralles‐Pérez B, Romeu M, Torres JL. The Buckwheat Iminosugard‐Fagomine Attenuates Sucrose‐Induced Steatosis and Hypertension in Rats. Mol Nutr Food Res 2019; 64:e1900564. [DOI: 10.1002/mnfr.201900564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 10/01/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Sara Ramos‐Romero
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
- Department of Cell Biology, Physiology & Immunology, Faculty of BiologyUniversity of Barcelona Barcelona 08028 Spain
| | - Mercè Hereu
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
| | - Lidia Atienza
- Department of PathologyPuerta del Mar University Hospital Cádiz 11009 Spain
| | - Susana Amézqueta
- Departament d'Enginyeria Química i Química Analítica and Institut de Biomedicina (IBUB)Universitat de Barcelona Barcelona 08028 Spain
| | - Josefina Casas
- Research Unit on BioactiveMolecules (RUBAM), Department of Biological ChemistryInstitute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
- Center for Biomedical Research on Hepatic and Digestive Diseases (CIBEREHD)ISCIII Madrid 28029 Spain
| | - Silvia Muñoz
- Instituto de Investigaciones Marinas (IIM‐CSIC) Vigo 36208 Spain
| | - Isabel Medina
- Instituto de Investigaciones Marinas (IIM‐CSIC) Vigo 36208 Spain
| | - Bernat Miralles‐Pérez
- Facultat de Medicina i Ciències de la SalutUniversitat Rovira i Virgili Reus 43201 Spain
| | - Marta Romeu
- Facultat de Medicina i Ciències de la SalutUniversitat Rovira i Virgili Reus 43201 Spain
| | - Josep L. Torres
- Institute of Advanced Chemistry of Catalonia (IQAC‐CSIC) Barcelona 08034 Spain
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8
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McCluskey LP, He L, Dong G, Harris R. Chronic exposure to liquid sucrose and dry sucrose diet have differential effects on peripheral taste responses in female rats. Appetite 2019; 145:104499. [PMID: 31669578 DOI: 10.1016/j.appet.2019.104499] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 11/29/2022]
Abstract
Sugar-sweetened beverages are the major source of added calories in the Western diet and their prevalence is associated with obesity and metabolic disruption. Despite the critical role of the taste system in determining food selection and consumption, the effects of chronic sucrose consumption on the peripheral taste system in mammals have received limited attention. We offered female Sprague Dawley rats free access to water and one of three diets for up to 40 days: (1) sucrose-free chow or "NS" diet; (2) a high-sucrose dry diet or "HS"; or (3) 30% sucrose solution and the NS diet, designated "LiqS" diet. Sucrose consumption by LiqS rats gradually increased and by day 14 was equal to that of HS rats. Food intake decreased in LiqS rats, but their energy intake remained higher than for NS or HS rats. There was no significant difference in weight gain of the groups during the study. Recordings from the chorda tympani nerve (CT), which innervates taste buds on the anterior tongue, revealed decreased responses to 1 M sucrose in both LiqS and HS rats and to acesulfame K and salt tastants in LiqS rats after 40 days on diet. Umami, bitter, and acid response magnitudes were unchanged in both groups. These results demonstrate that chronic sucrose exposure inhibits taste responses to higher concentrations of sweet stimuli. More surprisingly, CT responses to NaCl and 0.5M NaAc were significantly reduced in rats on the LiqS diet. Thus, the physical form of the diet influences taste responsiveness to salt and sweet taste function. These data suggest that taste buds are previously unappreciated targets of chronic sucrose consumption.
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Affiliation(s)
- Lynnette Phillips McCluskey
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, United States.
| | - Lianying He
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, United States; Department of Pathology and Laboratory Medicine, Medical University of South Carolina, United States
| | - Guankuo Dong
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, United States
| | - Ruth Harris
- Department of Physiology, Medical College of Georgia at Augusta University, United States
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9
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Slomp M, Belegri E, Blancas‐Velazquez AS, Diepenbroek C, Eggels L, Gumbs MC, Joshi A, Koekkoek LL, Lamuadni K, Ugur M, Unmehopa UA, la Fleur SE, Mul JD. Stressing the importance of choice: Validity of a preclinical free-choice high-caloric diet paradigm to model behavioural, physiological and molecular adaptations during human diet-induced obesity and metabolic dysfunction. J Neuroendocrinol 2019; 31:e12718. [PMID: 30958590 PMCID: PMC6593820 DOI: 10.1111/jne.12718] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 03/06/2019] [Accepted: 03/28/2019] [Indexed: 12/23/2022]
Abstract
Humans have engineered a dietary environment that has driven the global prevalence of obesity and several other chronic metabolic diseases to pandemic levels. To prevent or treat obesity and associated comorbidities, it is crucial that we understand how our dietary environment, especially in combination with a sedentary lifestyle and/or daily-life stress, can dysregulate energy balance and promote the development of an obese state. Substantial mechanistic insight into the maladaptive adaptations underlying caloric overconsumption and excessive weight gain has been gained by analysing brains from rodents that were eating prefabricated nutritionally-complete pellets of high-fat diet (HFD). Although long-term consumption of HFDs induces chronic metabolic diseases, including obesity, they do not model several important characteristics of the modern-day human diet. For example, prefabricated HFDs ignore the (effects of) caloric consumption from a fluid source, do not appear to model the complex interplay in humans between stress and preference for palatable foods, and, importantly, lack any aspect of choice. Therefore, our laboratory uses an obesogenic free-choice high-fat high-sucrose (fc-HFHS) diet paradigm that provides rodents with the opportunity to choose from several diet components, varying in palatability, fluidity, texture, form and nutritive content. Here, we review recent advances in our understanding how the fc-HFHS diet disrupts peripheral metabolic processes and produces adaptations in brain circuitries that govern homeostatic and hedonic components of energy balance. Current insight suggests that the fc-HFHS diet has good construct and face validity to model human diet-induced chronic metabolic diseases, including obesity, because it combines the effects of food palatability and energy density with the stimulating effects of variety and choice. We also highlight how behavioural, physiological and molecular adaptations might differ from those induced by prefabricated HFDs that lack an element of choice. Finally, the advantages and disadvantages of using the fc-HFHS diet for preclinical studies are discussed.
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Affiliation(s)
- Margo Slomp
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Evita Belegri
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Aurea S. Blancas‐Velazquez
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Charlene Diepenbroek
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Leslie Eggels
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Myrtille C.R. Gumbs
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Anil Joshi
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Laura L. Koekkoek
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Khalid Lamuadni
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Muzeyyen Ugur
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Unga A. Unmehopa
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Susanne E. la Fleur
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
| | - Joram D. Mul
- Department of Endocrinology and Metabolism, Laboratory of EndocrinologyDepartment of Clinical ChemistryAmsterdam Neuroscience, Amsterdam UMC, University of AmsterdamAmsterdamThe Netherlands
- Metabolism and Reward GroupNetherlands Institute for NeuroscienceRoyal Netherlands Academy of Arts and Sciences (KNAW)AmsterdamThe Netherlands
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10
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Acosta-Cota SDJ, Aguilar-Medina EM, Ramos-Payán R, Ruiz-Quiñónez AK, Romero-Quintana JG, Montes-Avila J, Rendón-Maldonado JG, Sánchez-López A, Centurión D, Osuna-Martínez U. Histopathological and biochemical changes in the development of nonalcoholic fatty liver disease induced by high-sucrose diet at different times. Can J Physiol Pharmacol 2018; 97:23-36. [PMID: 30388378 DOI: 10.1139/cjpp-2018-0353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The high intake of sweetened drinks is associated with obesity and insulin resistance. These pathologies are directly related to the development of nonalcoholic fatty liver disease (NAFLD), considered a condition of metabolic syndrome (MS). Due to their increasing worldwide prevalence, experimental animal models have been developed to gain a better understanding of its physiopathology; notwithstanding, few studies have evaluated its progression in association with MS and ingestion of sweetened drinks. Therefore, the aim of this study was to understand the pathophysiologic characteristics of NAFLD related to sucrose concentration and time of ingestion in rats. Wistar rats were divided into 2 groups with free access to either tap water or 30% sucrose, and euthanized at 12, 16, or 20 weeks; and 2 additional groups were given free access to either 40% or 50% sucrose and were euthanized at 20 weeks. Biochemical parameters and levels of serum cytokines were measured, and histology was performed. Ingestion of 30% sucrose induced liver steatosis until 16 weeks (grade 2) and 20 weeks (grade 3). Meanwhile, during 20 weeks, 40% sucrose induced grade 5 of nonalcoholic steatohepatitis (NASH) and 50% sucrose induced grade 6 of NASH and fibrosis. This study demonstrated that increasing time of induction and concentration of sucrose ingestion resulted in a higher grade of NAFLD.
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Affiliation(s)
- Selene de Jesús Acosta-Cota
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - Elsa Maribel Aguilar-Medina
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - Rosalio Ramos-Payán
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - Ana Karen Ruiz-Quiñónez
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - José Geovanni Romero-Quintana
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - Julio Montes-Avila
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - José Guadalupe Rendón-Maldonado
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
| | - Araceli Sánchez-López
- b Departamento de Farmacobiología, Cinvestav Sede Sur, Czda. de los Tenorios 235, Col. Granjas Coapa, Del. Tlalpan, CP 14330, Ciudad de Mexico, Mexico
| | - David Centurión
- b Departamento de Farmacobiología, Cinvestav Sede Sur, Czda. de los Tenorios 235, Col. Granjas Coapa, Del. Tlalpan, CP 14330, Ciudad de Mexico, Mexico
| | - Ulises Osuna-Martínez
- a Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa. Av. las Américas y Blvd. Universitarios S/N, CP 80010, Culiacán, Sinaloa, Mexico
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Harris RBS. Development of leptin resistance in sucrose drinking rats is associated with consuming carbohydrate-containing solutions and not calorie-free sweet solution. Appetite 2018; 132:114-121. [PMID: 30316873 DOI: 10.1016/j.appet.2018.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/10/2018] [Accepted: 10/09/2018] [Indexed: 01/24/2023]
Abstract
Rats offered 30% sucrose solution plus chow or a sucrose-free diet develop leptin resistance within 4 weeks. This experiment tested whether leptin resistance was associated with the reward of sweet taste or the pre- or post-absorptive effects of consumption of simple carbohydrate. Male Sprague Dawley rats were offered a sucrose-free diet (NS), a diet containing 67% calories as sucrose (HS) or NS diet plus 30% sucrose (LS), 0.03% saccharin (Sacc) or 20% SolCarb® solution for 38 days. SolCarb® is a maltodextrin powder. Sacc rats initially drank more than LS rats, but intakes were the same after Day 20. SolCarb® and LS rats drank the same number of calories from Day 15 to the end of the experiment. SolCarb® and LS rats ate less dry food than other groups, but total energy intake was greater than that of NS, HS and Sacc groups and over 80% of their energy intake was from carbohydrate. Leptin responsiveness was tested on Days 27 and 32 with each rat acting as its own control. An i.p. injection of 2 mg/kg leptin inhibited food intake of NS, HS and Sacc rats, but had no effect on energy intake of LS or SolCarb® rats or on consumption of Sacc, sucrose or SolCarb® solution. At the end of the experiment all of the rats were insulin sensitive, had the same body composition and serum leptin concentrations. These data indicate that consumption of a calorie containing carbohydrate solution and not sweet taste drives the development of leptin resistance and suggest that there is lower threshold for inhibition of hunger than for inhibition of reward by leptin.
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Affiliation(s)
- Ruth B S Harris
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
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