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Malik S, Xavier S, Soch A, Younesi S, Yip J, Slayo M, Barrientos RM, Sominsky L, Spencer SJ. High-fat diet and aging-associated memory impairments persist in the absence of microglia in female rats. Neurobiol Aging 2024; 140:22-32. [PMID: 38703636 DOI: 10.1016/j.neurobiolaging.2024.04.010] [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: 01/06/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/06/2024]
Abstract
Aging is associated with a priming of microglia such that they are hypersensitive to further immune challenges. As such high-fat diet during aging can have detrimental effects on cognition that is not seen in the young. However, conflicting findings also suggest that obesity may protect against cognitive decline during aging. Given this uncertainty we aimed here to examine the role of microglia in high-fat, high-sucrose diet (HFSD)-induced changes in cognitive performance in the aging brain. We hypothesised that 8 weeks of HFSD-feeding would alter microglia and the inflammatory milieu in aging and worsen aging-related cognitive deficits in a microglia-dependent manner. We found that both aging and HFSD reduced hippocampal neuron numbers and open field exploration; they also impaired recognition memory. However, the aging-related deficits occurred in the absence of a pro-inflammatory response and the deficits in memory performance persisted after depletion of microglia in the Cx3cr1-Dtr knock-in rat. Our data suggest that mechanisms additional to the acute microglial contribution play a role in aging- and HFSD-associated memory dysfunction.
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Affiliation(s)
- Sajida Malik
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia; IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Geelong, Victoria, Australia
| | - Soniya Xavier
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia; The Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Simin Younesi
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia; Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Jackson Yip
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia
| | - Mary Slayo
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia; Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Germany; Center for Mind, Brain and Behavior-CMBB, Giessen, Marburg, Germany
| | - Ruth M Barrientos
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA; Department of Neuroscience, The Ohio State University, Columbus, OH, USA; Department of Psychiatry and Behavioral Health, The Ohio State University, Columbus, OH, USA; Chronic Brain Injury Program, The Ohio State University, Columbus, OH, USA
| | - Luba Sominsky
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia; Barwon Health, Geelong, Victoria, Australia; IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Geelong, Victoria, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences RMIT University, Melbourne, VIC, Australia.
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N'Diaye M, Ducourneau EG, Bakoyiannis I, Potier M, Lafenetre P, Ferreira G. Obesogenic diet induces sex-specific alterations of contextual fear memory and associated hippocampal activity in mice. Cereb Cortex 2024; 34:bhae254. [PMID: 38934712 DOI: 10.1093/cercor/bhae254] [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: 02/16/2024] [Revised: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
In addition to metabolic and cardiovascular disorders, obesity is associated with cognitive deficits in humans and animal models. We have previously shown that obesogenic high-fat and sugar diet intake during adolescence (adoHFSD) impairs hippocampus (HPC)-dependent memory in rodents. These results were obtained in males only and it remains to evaluate whether adoHFSD has similar effect in females. Therefore, here, we investigated the effects of adoHFSD consumption on HPC-dependent contextual fear memory and associated brain activation in male and female mice. Exposure to adoHFSD increased fat mass accumulation and glucose levels in both males and females but impaired contextual fear memory only in males. Compared with females, contextual fear conditioning induced higher neuronal activation in the dorsal and ventral HPC (CA1 and CA3 subfields) as well as in the medial prefrontal cortex in males. Also, adoHFSD-fed males showed enhanced c-Fos expression in the dorsal HPC, particularly in the dentate gyrus, and in the basolateral amygdala compared with the other groups. Finally, chemogenetic inactivation of the dorsal HPC rescued adoHFSD-induced memory deficits in males. Our results suggest that males are more vulnerable to the effects of adoHFSD on HPC-dependent aversive memory than females, due to overactivation of the dorsal HPC.
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Affiliation(s)
- Matéo N'Diaye
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Eva-Gunnel Ducourneau
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Ioannis Bakoyiannis
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Mylène Potier
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Pauline Lafenetre
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Guillaume Ferreira
- NutriNeuro Lab, FoodCircus Team, Université de Bordeaux, UMR 1286 INRAE, Bordeaux INP, 146 rue Léo Saignat, 33076 Bordeaux, France
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Bakoyiannis I, Ducourneau EG, N'diaye M, Fermigier A, Ducroix-Crepy C, Bosch-Bouju C, Coutureau E, Trifilieff P, Ferreira G. Obesogenic diet induces circuit-specific memory deficits in mice. eLife 2024; 13:e80388. [PMID: 38436653 PMCID: PMC10911750 DOI: 10.7554/elife.80388] [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: 05/18/2022] [Accepted: 02/13/2024] [Indexed: 03/05/2024] Open
Abstract
Obesity is associated with neurocognitive dysfunction, including memory deficits. This is particularly worrisome when obesity occurs during adolescence, a maturational period for brain structures critical for cognition. In rodent models, we recently reported that memory impairments induced by obesogenic high-fat diet (HFD) intake during the periadolescent period can be reversed by chemogenetic manipulation of the ventral hippocampus (vHPC). Here, we used an intersectional viral approach in HFD-fed male mice to chemogenetically inactivate specific vHPC efferent pathways to nucleus accumbens (NAc) or medial prefrontal cortex (mPFC) during memory tasks. We first demonstrated that HFD enhanced activation of both pathways after training and that our chemogenetic approach was effective in normalizing this activation. Inactivation of the vHPC-NAc pathway rescued HFD-induced deficits in recognition but not location memory. Conversely, inactivation of the vHPC-mPFC pathway restored location but not recognition memory impairments produced by HFD. Either pathway manipulation did not affect exploration or anxiety-like behaviour. These findings suggest that HFD intake throughout adolescence impairs different types of memory through overactivation of specific hippocampal efferent pathways and that targeting these overactive pathways has therapeutic potential.
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Affiliation(s)
- Ioannis Bakoyiannis
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Eva Gunnel Ducourneau
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Mateo N'diaye
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Alice Fermigier
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Celine Ducroix-Crepy
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Clementine Bosch-Bouju
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | | | - Pierre Trifilieff
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
| | - Guillaume Ferreira
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33077BordeauxFrance
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Rey M, Coirini H, Marchena A, González Deniselle MC, Kruse MS. Effects of metformin on behavioral alterations produced by chronic sucrose consumption in male rats. J Neuroendocrinol 2024; 36:e13362. [PMID: 38148478 DOI: 10.1111/jne.13362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 11/11/2023] [Accepted: 11/28/2023] [Indexed: 12/28/2023]
Abstract
Excessive consumption of sugary drinks negatively impacts the developing brain, producing long-lasting behavioral and metabolic disorders. Here, we study whether treatment with the antihyperglycemic agent metformin prevents some of the anxiety and memory alterations produced by chronic sucrose consumption. Male Sprague-Dawley rats had unrestricted access to water (control group) and a bottle containing a 10% sucrose solution (sucrose group, SUC) for 35 days. In parallel, a group of animals from SUC received metformin (25 mg/kg or 50 mg/kg, orally; MET 25 and MET 50 groups, respectively). After 2 weeks of metformin treatment, the animals weighed less than controls. SUC and MET 50 groups compensated for the caloric intake from the sugary solution by consuming less chow. In contrast, total energy intake in MET 25 was higher than the rest of the groups, but they still weighed less than control and SUC groups, suggesting that at this concentration, metformin delays body growth. The animals were then tested for the open field (OF), elevated plus maze (EPM) and novel object location (NOL) tests. In the OF, SUC animals spent more time in the central zone of the arena, evidenced by an increased number of entries and the distance traveled there. In the EPM, SUC animals spent more time in the open arms and less time in the central square. Metformin treatment prevented the decreased anxiety observed in SUC animals in the OF and EPM. In the NOL test, SUC animals showed less interest in novelty and metformin treatment did not improve this alteration. The preference for open spaces in the OF and EPM were associated with increased serum triglycerides (TG) and malondialdehyde levels in the medial prefrontal cortex (mPFC) and the hippocampus (HIP), while poor memory performance was associated with high basal blood glucose levels. In conclusion, the decreased anxiety-like behavior produced by chronic sucrose consumption was prevented by metformin treatment, through a mechanism that probably involves normalization of TG levels and decreased oxidative stress in mPFC and HIP.
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Affiliation(s)
- Mariana Rey
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
| | - Héctor Coirini
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
| | - Agustina Marchena
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
| | - María Claudia González Deniselle
- Laboratorio de Bioquímica Neuroendócrina, Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
- Facultad de Medicina, Departamento de Fisiología, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María Sol Kruse
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
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5
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Gancarz AM, Parmar R, Shwani T, Cobb MM, Crawford MN, Watson JR, Evans L, Kausch MA, Werner CT, Dietz DM. Adolescent exposure to sucrose increases cocaine-mediated behaviours in adulthood via Smad3. Addict Biol 2023; 28:e13346. [PMID: 38017636 DOI: 10.1111/adb.13346] [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: 06/29/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 11/30/2023]
Abstract
Adolescence, a critical period of developmental period, is marked by neurobiological changes influenced by environmental factors. Here, we show how exposure to sucrose, which is ubiquitously available in modern diets, results in changes in behavioural response to cocaine as an adult. Rats were given daily access to either 10% sucrose or water during the adolescent period (PND28-42). Following this period, rats are left undisturbed until they reach adulthood. In adulthood, rats were tested for (i) acquisition of a low dose of cocaine, (ii) progressive ratio (PR) test, and (iii) resistance to punished cocaine taking. Sucrose exposure resulted in significant alterations in all behavioural measures. To determine the neurobiological mechanisms leading to such behavioural adaptations, we find that adolescent sucrose exposure results in an upregulation of the transcription factor Smad3 in the nucleus accumbens (NAc) when compared with water-exposed controls. Transiently blocking the active form of this transcription factor (HSV-dnSmad3) during adolescence mitigated the enhanced cocaine vulnerability-like behaviours observed in adulthood. These findings suggest that prior exposure to sucrose during adolescence can heighten the reinforcing effects of cocaine. Furthermore, they identify the TGF-beta pathway and Smad3 as playing a key role in mediating enduring and long-lasting adaptations that contribute to sucrose-induced susceptibility to cocaine. Taken together, these results have important implications for development and suggest that adolescent sucrose exposure may persistently enhance the susceptibility to substance abuse.
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Affiliation(s)
- Amy M Gancarz
- Department of Psychology, California State University, Bakersfield, California, USA
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
- Clinical and Research Institute on Addictions, University at Buffalo, Buffalo, New York, USA
| | - Raveena Parmar
- Department of Psychology, California State University, Bakersfield, California, USA
| | - Treefa Shwani
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
| | - Moriah M Cobb
- Department of Psychology, California State University, Bakersfield, California, USA
| | - Michelle N Crawford
- Department of Psychology, California State University, Bakersfield, California, USA
| | - Jacob R Watson
- Department of Psychology, California State University, Bakersfield, California, USA
| | - Lisa Evans
- Department of Psychology, California State University, Bakersfield, California, USA
| | - Michael A Kausch
- Department of Psychology, California State University, Bakersfield, California, USA
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
| | - Craig T Werner
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
| | - David M Dietz
- Department of Pharmacology and Toxicology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
- Clinical and Research Institute on Addictions, University at Buffalo, Buffalo, New York, USA
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6
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Jeon YJ, Park JC, Jang YS, Kim DH, Choi BR, Kim JM, Kim JJ, Han JS. Chemogenetic modulation of the medial prefrontal cortex regulates resistance to acute stress-induced cognitive impairments. Cereb Cortex 2023; 33:4806-4814. [PMID: 36156637 PMCID: PMC10110428 DOI: 10.1093/cercor/bhac381] [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: 02/14/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/14/2022] Open
Abstract
The medial prefrontal cortex (mPFC) has been implicated in regulating resistance to the effects of acute uncontrollable stress. We previously showed that mPFC-lesioned animals exhibit impaired object recognition memory after acute exposure to a brief stress that had no effect in normal animals. Here, we used designer receptors exclusively activated by designer drugs to determine how modulating mPFC activity affects recognition-memory performance under stressful conditions. Specifically, animals with chemogenetic excitation or inhibition of the mPFC underwent either a brief ineffective stress (20-min restraint + 20 tail shocks) or a prolonged effective stress (60-min restraint + 60 tail shocks). Subsequent recognition memory tests showed that animals with chemogenetic mPFC inhibition exposed to brief stress showed impairment in an object recognition memory task, whereas those with chemogenetic mPFC excitation exposed to prolonged stress did not. Thus, the present findings the decreased mPFC activity exacerbates acute stress effects on memory function whereas increased mPFC activity counters these stress effects provide evidence that the mPFC bidirectionally modulates stress resistance.
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Affiliation(s)
- Yong-Jae Jeon
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Jung-Cheol Park
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Yoon-Sun Jang
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Dong-Hee Kim
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Bo-Ryoung Choi
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Jae-Min Kim
- Department of Psychiatry, Chonnam National University Medical School, Gwangju 61669, Republic of Korea
| | - Jeansok J Kim
- Department of Psychology, Program in Neuroscience, University of Washington, Seattle, WA 98195-1525, United States
| | - Jung-Soo Han
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
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McNaughton KA, Williamson LL. Effects of sex and pro-inflammatory cytokines on context discrimination memory. Behav Brain Res 2023; 442:114320. [PMID: 36720350 PMCID: PMC9930642 DOI: 10.1016/j.bbr.2023.114320] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/02/2023]
Abstract
In learning and memory tasks, immune overactivation is associated with impaired performance, while normal immune activation is associated with optimal performance. In one specific domain of memory, context discrimination memory, peripheral immune stimulation has been shown to impair performance on the context-object discrimination memory task in male rats. In order to evaluate potential sex differences in this task, as well as potential mechanisms for the memory impairment, we evaluated the ability of peripheral immune stimulation to impair task performance in both males and females. Next, we examined whether treatment with interleukin-1 receptor antagonist (IL-1ra), a receptor antagonist for the pro-inflammatory cytokine interleukin (IL)-1β, was able to rescue the memory deficit. We examined microglial morphology in the hippocampus and cytokine mRNA and protein expression in the hippocampus and the periphery. Male rats displayed memory impairment in response to LPS, and this impairment was not rescued by IL-1ra. Female rats did not have significant memory impairments and IL-1ra administration improved memory following inflammation. A subset of cytokines and chemokines were increased only in LPS-treated males. Inflammation alone did not alter microglia morphology, but IL-1ra did in certain sub-regions of the hippocampus. Together, these results indicate that sex differences exist in the ability of a peripheral immune stimulus to influence context discrimination memory and specific cytokine signals may be altered in impaired males. This study highlights the importance of sex differences in response to inflammatory challenges, especially related to memory impairments in context discrimination memory.
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Affiliation(s)
- Kathryn A McNaughton
- University of Maryland (UMD), 0112 Biology-Psychology Building, Department of Psychology, College Park, MD 20742, United States.
| | - Lauren L Williamson
- Northern Kentucky University, 100 Nunn Dr, FH 359F, Highland Heights, KY 41099, United States.
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Coirini H, Rey M, Gonzalez Deniselle MC, Kruse MS. Long-Term Memory Function Impairments following Sucrose Exposure in Juvenile versus Adult Rats. Biomedicines 2022; 10:biomedicines10112723. [PMID: 36359243 PMCID: PMC9687305 DOI: 10.3390/biomedicines10112723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/30/2022] Open
Abstract
We previously described that excessive consumption of sucrose during youth produces fear memory and anxiety-like behavior in adulthood. Here, we evaluated whether high cognitive function is also affected by studying early sucrose consumption in object recognition memory (NOR). Male Sprague Dawley rats were tested for short-term, long-term, and consolidated NOR after 25 days of unlimited sucrose access in juvenile (PD 25–50) or adult age (PD 75–100). All rats spent equal time exploring the two objects during the sample phase T1. When animals were exposed for 2, 24 h or 7 days later to a copy of the objects presented in T1 and a novel object, the sucrose-exposed juvenile group failed to distinguish between the familiar and the novel objects in contrast with the rest of the groups. Sucrose-exposed animals developed hypertriglyceridemia and glucose intolerance, but juvenile animals showed increased fasting glycemia and sustained the glucose intolerance longer. Moreover, sucrose decreased hippocampal proBDNF expression in juveniles while it was increased in adults, and sucrose also increased RAGE expression in adults. The NOR exploration ratio correlated negatively with basal glycemia and positively with proBDNF. Taken together, these data suggest that sucrose-induced alterations in glucose metabolism may contribute to a long-term decline in proBDNF and impaired recognition memory.
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Affiliation(s)
- Héctor Coirini
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Vuelta de Obligado 2490, Buenos Aires C1428ADN, Argentina
- Correspondence: ; Tel.: +54-11-4783-2869 (ext. 1250); Fax: +54-11-4786-2564
| | - Mariana Rey
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Vuelta de Obligado 2490, Buenos Aires C1428ADN, Argentina
| | - María Claudia Gonzalez Deniselle
- Laboratorio de Bioquímica Neuroendócrina, Instituto de Biología y Medicina Experimental-CONICET, Vuelta de Obligado 2490, Buenos Aires C1428ADN, Argentina
- Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires C1121ABG, Argentina
| | - María Sol Kruse
- Laboratorio de Neurobiología, Instituto de Biología y Medicina Experimental-CONICET, Vuelta de Obligado 2490, Buenos Aires C1428ADN, Argentina
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Fadó R, Molins A, Rojas R, Casals N. Feeding the Brain: Effect of Nutrients on Cognition, Synaptic Function, and AMPA Receptors. Nutrients 2022; 14:nu14194137. [PMID: 36235789 PMCID: PMC9572450 DOI: 10.3390/nu14194137] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022] Open
Abstract
In recent decades, traditional eating habits have been replaced by a more globalized diet, rich in saturated fatty acids and simple sugars. Extensive evidence shows that these dietary factors contribute to cognitive health impairment as well as increase the incidence of metabolic diseases such as obesity and diabetes. However, how these nutrients modulate synaptic function and neuroplasticity is poorly understood. We review the Western, ketogenic, and paleolithic diets for their effects on cognition and correlations with synaptic changes, focusing mainly (but not exclusively) on animal model studies aimed at tracing molecular alterations that may contribute to impaired human cognition. We observe that memory and learning deficits mediated by high-fat/high-sugar diets, even over short exposure times, are associated with reduced arborization, widened synaptic cleft, narrowed post-synaptic zone, and decreased activity-dependent synaptic plasticity in the hippocampus, and also observe that these alterations correlate with deregulation of the AMPA-type glutamate ionotropic receptors (AMPARs) that are crucial to neuroplasticity. Furthermore, we explored which diet-mediated mechanisms modulate synaptic AMPARs and whether certain supplements or nutritional interventions could reverse deleterious effects, contributing to improved learning and memory in older people and patients with Alzheimer’s disease.
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Affiliation(s)
- Rut Fadó
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, E-08195 Sant Cugat del Vallès, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, E-08193 Cerdanyola del Vallès, Spain
- Correspondence: ; Tel.: +34-93-504-20-00
| | - Anna Molins
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, E-08195 Sant Cugat del Vallès, Spain
| | - Rocío Rojas
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, E-08195 Sant Cugat del Vallès, Spain
| | - Núria Casals
- Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, E-08195 Sant Cugat del Vallès, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
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Becegato M, Silva RH. Object recognition tasks in rats: Does sex matter? Front Behav Neurosci 2022; 16:970452. [PMID: 36035023 PMCID: PMC9412164 DOI: 10.3389/fnbeh.2022.970452] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
Novelty recognition tasks based on object exploration are frequently used for the evaluation of cognitive abilities and investigation of neurobiological and molecular aspects of memory in rodents. This is an interesting approach because variations of the object recognition tasks focus on different aspects of the memory events such as novelty, location, context, and combinations of these elements. Nevertheless, as in most animal neuroscience research, female subjects are underrepresented in object recognition studies. When studies include females, the particularities of this sex are not always considered. For example, appropriate controls for manipulations conducted exclusively in females (such as estrous cycle verification) are not included. In addition, interpretation of data is often based on standardizations conducted with male subjects. Despite that, females are frequently reported as deficient and unable to adequately perform some memory tests. Thus, our study aims to review studies that describe similarities and differences between male and female performances in the different variations of object recognition tasks. In summary, although females are commonly described with deficits and the articles emphasize sex differences, most published data reveal similar performances when sexes are compared.
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Affiliation(s)
- Marcela Becegato
- Behavioral Neuroscience Laboratory, Department of Pharmacology, Federal University of São Paulo, São Paulo, Brazil
| | - Regina H. Silva
- Behavioral Neuroscience Laboratory, Department of Pharmacology, Federal University of São Paulo, São Paulo, Brazil
- MaternaCiência, Federal University of São Paulo, São Paulo, Brazil
- *Correspondence: Regina H. Silva,
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11
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Garcez ML, Bellettini-Santos T, Schiavo GL, Calixto KV, Mina F, Medeiros EB, Zabot GC, de Souza Pereira N, Nascimento NB, Tomaz DB, Manenti MC, Kucharska E, Rico EP, Budni J. Long-term administration of soft drink causes memory impairment and oxidative damage in adult and middle-aged rats. Exp Gerontol 2022; 166:111873. [PMID: 35760268 DOI: 10.1016/j.exger.2022.111873] [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: 02/02/2022] [Revised: 06/13/2022] [Accepted: 06/21/2022] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The consumption of soft drinks has increased considerably in recent decades, mainly cola soft drinks. Excessive consumption of cola-based soft drinks is associated with several diseases and cognitive decline, particularly memory impairment. Furthermore, diets with high sugar can promote insulin resistance, metabolic syndrome, and dyslipidemia. AIM Thus, the present study aimed to evaluate the effect of cola soft drink intake on behavioral alterations and oxidative damage in 2-, 8- and 14- month-old male Wistar rats. METHODS The soft drink groups drank soft drink and/or water ad libitum during 67 days, the control groups ingested only water. Radial-arm maze and Y-maze were used to evaluate spatial memory, open-field to evaluate the habituation memory, and inhibitory avoidance to evaluate aversive memory. The behavioral tests started at the day 57 and finished at day 67 of treatment. At 68th day, the rats were killed; frontal cortex and hippocampus were dissected to the analysis of antioxidants enzymes catalase (CAT) and superoxide dismutase (SOD); and the oxidative markers thiobarbituric acid reactive substances (TBARs) and dichloro-dihydro-fluorescein diacetate (DCFH) were measured in the hippocampus. RESULTS AND DISCUSSION The cola-based soft drink intake caused memory impairment in the radial-arm maze, Y-maze task, and open-field in the 2- and 8-month-old rat, but not in the 14-month-old. There were no difference among groups in the inhibitory avoidance test. In the frontal cortex, soft drink intake reduced CAT activity in the 8-month-old rats and SOD activity in the 8- and 14-month-old rats. In the hippocampus, the soft drink increased CAT activity in 8-month-old rats, increased DCFH levels at all ages, and increased TBARs levels in 2-month-rats. Therefore, the results show that long-term soft drink intake leads to memory impairment and oxidative stress. The younger seems to be more susceptible to the soft drink alterations on behavior; however, soft drink caused alterations in the oxidative system at all ages evaluated.
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Affiliation(s)
- Michelle Lima Garcez
- Laboratory of Translational Neuroscience, Department of Biochemistry, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil; Graduate Program of Research and Extension (CEPEG), University Center of Espirito Santo, Espírito Santo, Brazil
| | - Tatiani Bellettini-Santos
- Graduate Program of Research and Extension (CEPEG), University Center of Espirito Santo, Espírito Santo, Brazil
| | - Gustavo Luis Schiavo
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Karen Vasconcelos Calixto
- Graduate Program of Research and Extension (CEPEG), University Center of Espirito Santo, Espírito Santo, Brazil
| | - Francielle Mina
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Eduarda Behenck Medeiros
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Gabriel Casagrande Zabot
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Nathalia de Souza Pereira
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Natália Baltazar Nascimento
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Débora Borges Tomaz
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Maria Cecília Manenti
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Ewa Kucharska
- Jesuit University Ignatianum in Krakow, Faculty of Education, Institute of Educational Science, Poland
| | - Eduardo Pacheco Rico
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil
| | - Josiane Budni
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, Santa Catarina, Brazil.
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12
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Ródenas-González F, Blanco-Gandía MC, Miñarro J, Rodríguez-Arias M. Cognitive profile of male mice exposed to a Ketogenic Diet. Physiol Behav 2022; 254:113883. [PMID: 35716801 DOI: 10.1016/j.physbeh.2022.113883] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 10/18/2022]
Abstract
In recent years, nutritional interventions for different psychiatric diseases have gained increasing attention, such as the ketogenic diet (KD). This has led to positive effects in neurological disorders such as Parkinson's disease, addiction, autism or epilepsy. The neurobiological mechanisms through which these effects are induced and the effects in cognition still warrant investigation, and considering that other high-fat diets (HFD) can lead to cognitive disturbances that may affect the results achieved, the main aim of the present work was to evaluate the effects of a KD to determine whether it can induce such cognitive effects. A total of 30 OF1 male mice were employed to establish the behavioral profile of mice fed a KD by testing anxiety behavior (Elevated Plus Maze), locomotor activity (Open Field), learning (Hebb Williams Maze), and memory (Passive Avoidance Test). The results revealed that the KD did not affect locomotor activity, memory or hippocampal-dependent learning, as similar results were obtained with mice on a standard diet, albeit with increased anxiety behavior. We conclude that a KD is a promising nutritional approach to apply in research studies, given that it does not cause cognitive alterations.
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Affiliation(s)
- Francisco Ródenas-González
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Avda. Blasco Ibáñez, 21, Valencia, 46010 Spain
| | - M Carmen Blanco-Gandía
- Departamento de Psicología y Sociología, Facultad de Ciencias Sociales y Humanas, Universidad de Zaragoza, Teruel, Spain
| | - José Miñarro
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Avda. Blasco Ibáñez, 21, Valencia, 46010 Spain
| | - Marta Rodríguez-Arias
- Unidad de Investigación Psicobiología de las Drogodependencias, Departamento de Psicobiología, Facultad de Psicología, Universitat de Valencia, Avda. Blasco Ibáñez, 21, Valencia, 46010 Spain.
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13
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Abstract
Sex and gender differences are seen in cognitive disturbances in a variety of neurological and psychiatry diseases. Men are more likely to have cognitive symptoms in schizophrenia whereas women are more likely to have more severe cognitive symptoms with major depressive disorder and Alzheimer's disease. Thus, it is important to understand sex and gender differences in underlying cognitive abilities with and without disease. Sex differences are noted in performance across various cognitive domains - with males typically outperforming females in spatial tasks and females typically outperforming males in verbal tasks. Furthermore, there are striking sex differences in brain networks that are activated during cognitive tasks and in learning strategies. Although rarely studied, there are also sex differences in the trajectory of cognitive aging. It is important to pay attention to these sex differences as they inform researchers of potential differences in resilience to age-related cognitive decline and underlying mechanisms for both healthy and pathological cognitive aging, depending on sex. We review literature on the progressive neurodegenerative disorder, Alzheimer's disease, as an example of pathological cognitive aging in which human females show greater lifetime risk, neuropathology, and cognitive impairment, compared to human males. Not surprisingly, the relationships between sex and cognition, cognitive aging, and Alzheimer's disease are nuanced and multifaceted. As such, this chapter will end with a discussion of lifestyle factors, like education and diet, as modifiable factors that can alter cognitive aging by sex. Understanding how cognition changes across age and contributing factors, like sex differences, will be essential to improving care for older adults.
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14
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Miles B, Yang W, Dezsi G, Sokolenko E, Gomes FMM, Jupp B, Hill R, Hudson M, Jones NC. High sucrose diet does not impact spatial cognition in rats using advanced touchscreen technology. Behav Brain Res 2022; 418:113665. [PMID: 34767903 DOI: 10.1016/j.bbr.2021.113665] [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: 07/19/2021] [Revised: 10/03/2021] [Accepted: 11/07/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Western diets, including those consisting of saturated fats, simple sugars and processed foods, is rising at an unprecedented rate. These lead to obesity and metabolic diseases, and possibly cognitive deficits. Exploring this, recent studies demonstrate marked impairment in spatial learning in rodents exposed to high-sugar diets. We utilised advanced touchscreen technology to assess several spatial and non-spatial components of cognition in rats chronically exposed to a high sucrose diet. METHODS Male Wistar rats received 70 ml of 10% sucrose solution each day, or control tap water, persisting for the experiment duration (total n = 32). After 5 weeks of diet, rats performed Pairwise Discrimination, Location Discrimination, or Progressive Ratio tasks on automated touchscreens, and performance compared between groups. RESULTS Sucrose rats consumed all the sugar solution provided to them, and had significantly increased caloric intake, compared to controls (p < 0.0001). However, in all tests, we found no significant difference in cognitive performance between Sucrose and Control treated rats. This included the number of trials for acquisition, and reversal, in Pairwise Discrimination, and number of trials required to complete Location Discrimination (p > 0.05 for all outcomes). No differences were observed in perseverative behaviour, motivation levels, or processing speed. CONCLUSION Our study found no evidence to suggest that chronic consumption of sucrose impairs cognition, including both spatial and non-spatial learning tasks. These findings suggest that not all aspects of spatial cognition are negatively impacted by high sugar diet in rodents, and that particular use of touchscreen technology may probe different aspects of cognition than traditional tasks.
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Affiliation(s)
- Briannah Miles
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - William Yang
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Gabi Dezsi
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Elysia Sokolenko
- Department of Medicine (Royal Melbourne Hospital), University of Melbourne, Parkville, VIC 3052, Australia
| | - Flávia M M Gomes
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Bianca Jupp
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Rachel Hill
- Department of Psychiatry, School of Clinical Sciences at Monash Health, Monash Medical Centre, Monash University, Clayton, VIC 3168, Australia
| | - Matthew Hudson
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Nigel C Jones
- Department of Neuroscience, Central Clinical School, Monash University, The Alfred Hospital, Melbourne, VIC 3004, Australia; Department of Medicine (Royal Melbourne Hospital), University of Melbourne, Parkville, VIC 3052, Australia.
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15
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Alemohammad SMA, Noori SMR, Samarbafzadeh E, Noori SMA. The role of the gut microbiota and nutrition on spatial learning and spatial memory: a mini review based on animal studies. Mol Biol Rep 2022; 49:1551-1563. [PMID: 35028854 DOI: 10.1007/s11033-021-07078-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/09/2021] [Indexed: 02/07/2023]
Abstract
The gut-brain axis is believed to constitute a bidirectional communication mechanism that affects both mental and digestive processes. Recently, the role of the gut microbiota in cognitive performance has been the focus of much research. In this paper, we discuss the effects of gut microbiota and nutrition on spatial memory and learning. Studies have shown the influence of diet on cognitive capabilities such as spatial learning and memory. It has been reported that a high-fat diet can alter gut microbiota which subsequently leads to changes in spatial learning and memory. Some microorganisms in the gut that can significantly affect spatial learning and memory are Akkermansia muciniphila, Bifidobacterium, Lactobacillus, Firmicutes, Bacteroidetes, and Helicobacter pylori. For example, a reduction in the amount of A. muciniphila in the gut leads to increased intestinal permeability and induces immune response in the brain which then negatively affects cognitive performances. We suggest that more studies should be carried out regarding the indirect effects of nutrition on cognitive activities via alteration in gut microbiota.
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Affiliation(s)
| | - Seyed Mohammad Reza Noori
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ehsan Samarbafzadeh
- Department of Psychiatry and Behavioral Medicine, Carilion Clinic, Roanoke, VA, USA
| | - Seyyed Mohammad Ali Noori
- Toxicology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. .,Department of Nutrition, School of Allied Medical Sciences, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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16
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Marinho AR, Severo M, Vilela S, Costa R, de Lauzon-Guillain B, Torres D, Lopes C. Is the association between dietary patterns and cognition mediated by children's adiposity? A longitudinal approach in Generation XXI birth cohort. Clin Nutr 2021; 41:231-237. [PMID: 34915274 DOI: 10.1016/j.clnu.2021.11.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/07/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND/AIMS There is a consistent body of evidence on the association between single nutrients and cognition, but the role of a healthful dietary pattern on cognition in children has been seldomly studied. This study aims to assess the association between dietary patterns at 4 years (y) and cognitive abilities at 10-13y and examine whether adiposity mediated these associations. METHODS This study used data from a sub-sample of the population-based birth cohort Generation XXI, with complete information on diet and cognition (n = 3575). At 4y, data on dietary intake was collected by a validated food frequency questionnaire and dietary patterns were derived by latent class analysis, namely Energy-dense food (EDF) pattern, Snacking pattern and Healthier pattern (Reference). At 10-13y, the Portuguese Version of the Wechsler Intelligence Scale for Children®-Third Edition was administered by trained psychologists and age-adjusted composite scores were computed: a Full-Scale Intelligence Quotient (IQ), plus a Verbal IQ, Performance IQ and Processing Speed IQ. Age- and sex-specific body mass index (BMI) z-scores, body fat percentage from bioimpedance, and waist-to-weight ratio and waist-to-hip ratio were used as measures of adiposity. Regression coefficients and 95% confidence intervals (CI) were computed using linear regression models (adjusted for maternal age and education, pre-pregnancy BMI, smoking and alcohol intake during pregnancy, child's sex, birthweight, exclusive breastfeeding duration and having siblings at 4y). Mediation analysis was conducted using path analysis. RESULTS After adjustment, children classified in the EDF or a Snacking patterns at 4y were more likely to have lower scores on total IQ (β = -0.116; 95%CI:-0.192,-0.039 and β = -0.148; 95%CI -0.252,-0.044, respectively), Verbal IQ (β = -0.104; 95%CI -0.177, -0.031 and β = -0.163; 95%CI -0.262,-0.064, respectively) and Performance IQ (β = -0.116 95%CI -0.193,-0.040 and β = -0.147; 95%CI -0.250,-0.042, respectively) at 10-13y, when compared to those classified in the Healthier pattern. None of the adiposity measures seemed to explain the associations between dietary patterns and IQ. CONCLUSION This study supports that early unhealthy dietary patterns were associated with lower child's cognitive ability, but this effect did not seem to be mediated by adiposity.
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Affiliation(s)
- Ana Rita Marinho
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal; Department of Public Health and Forensic Sciences, and Medical School, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Milton Severo
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal; Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - Sofia Vilela
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Raquel Costa
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal; Digital Human-Environment Interaction Lab, Universidade Lusófona, Portugal
| | | | - Duarte Torres
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal; Faculty of Nutrition and Food Sciences, University of Porto, Porto, Portugal
| | - Carla Lopes
- EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal; Department of Public Health and Forensic Sciences, and Medical School, Faculty of Medicine, University of Porto, Porto, Portugal.
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17
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The spontaneous location recognition task for assessing spatial pattern separation and memory across a delay in rats and mice. Nat Protoc 2021; 16:5616-5633. [PMID: 34741153 DOI: 10.1038/s41596-021-00627-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/02/2021] [Indexed: 11/08/2022]
Abstract
Keeping similar memories distinct from one another is a critical cognitive process without which we would have difficulty functioning in everyday life. Memories are thought to be kept distinct through the computational mechanism of pattern separation, which reduces overlap between similar input patterns to amplify differences among stored representations. At the behavioral level, impaired pattern separation has been shown to contribute to memory deficits seen in neuropsychiatric and neurodegenerative diseases, including Alzheimer's disease, and in normal aging. This protocol describes the use of the spontaneous location recognition (SLR) task in mice and rats to behaviorally assess spatial pattern separation ability. This two-phase spontaneous memory task assesses the extent to which animals can discriminate and remember object locations presented during the encoding phase. Using three configurations of the task, the similarity of the to-be-remembered locations can be parametrically manipulated by altering the spatial positions of objects-dissimilar, similar or extra similar-to vary the load on pattern separation. Unlike other pattern separation tasks, SLR varies the load on pattern separation during encoding, when pattern separation is thought to occur. Furthermore, SLR can be used in standard rodent behavioral facilities with basic expertise in rodent handling. The entire protocol takes ~20 d from habituation to testing of the animals on all three task configurations. By incorporating breaks between testing, and varying the objects used as landmarks, animals can be tested repeatedly, increasing experimental power by allowing for within-subjects manipulations.
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18
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Xavier S, Soch A, Younesi S, Malik S, Spencer SJ, Sominsky L. Maternal diet before and during pregnancy modulates microglial activation and neurogenesis in the postpartum rat brain. Brain Behav Immun 2021; 98:185-197. [PMID: 34418500 DOI: 10.1016/j.bbi.2021.08.223] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 08/11/2021] [Accepted: 08/14/2021] [Indexed: 01/12/2023] Open
Abstract
The implications of poor maternal diet on offspring metabolic and neuroimmune development are well established. Increasing evidence now suggests that maternal obesity and poor diet can also increase the risk of postpartum mood disorders, but the mechanisms are unknown. Here we investigated the effects of a poor, high-fat-high-sugar diet (HFSD) on peripheral and central inflammation, neurogenesis and postpartum anxiety-like behaviours. We hypothesised that long-term consumption of a HFSD pre- and post-conception would increase the levels of circulating cytokines and induce microglial activation, particularly in the arcuate nucleus of the hypothalamus (ARC), as the primary brain region involved in the integration of satiety signalling; and this would lead to increased anxiety, stress responsivity and disrupted neurogenesis. We further hypothesised that these effects would be ameliorated by consumption of a healthier diet during pregnancy - specifically a diet high in omega-3 polyunsaturated fatty acids (PUFAs). As expected, the HFSD significantly increased pre-conception body weight, elevated circulating cytokines and activated microglia in the ARC, as well as in the basolateral amygdala. The HFSD also significantly increased the numbers of immature (doublecortin (DCX)-positive) neurons in the subgranular/granular region of the hippocampus, a neurogenic response that was, surprisingly, mimicked by consumption of a diet high in omega-3 PUFAs. Despite these effects of peri-pregnancy dietary imbalance, we detected no differences in anxiety-like behaviours or hypothalamic-pituitary-adrenal (HPA) axis reactivity between the groups. A shift to a healthier diet post-conception reversed the peripheral inflammation and alleviated the microglial activation. These novel data indicate the importance of a balanced peri-pregnancy diet and highlight the need for future research into key triggers that alter the neuroimmune balance in the maternal brain.
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Affiliation(s)
- Soniya Xavier
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Simin Younesi
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Sajida Malik
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia; ARC Centre of Excellence for Nanoscale Biophotonics, RMIT University, Melbourne, VIC, Australia
| | - Luba Sominsky
- School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia; Barwon Health Laboratory, Barwon Health University Hospital, Geelong, VIC, Australia; Institute for Physical and Mental Health and Clinical Transformation, School of Medicine, Deakin University, Geelong, VIC, Australia.
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19
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Rehn S, Boakes RA, Badolato CJ, Rooney KB. Sex differences in recovery from cognitive and metabolic impairments induced by supplementary sucrose in rats. Physiol Behav 2021; 239:113515. [PMID: 34224781 DOI: 10.1016/j.physbeh.2021.113515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 12/25/2022]
Abstract
Consumption of beverages containing around 10% sucrose contributes to worldwide obesity. Studies using rats can increase understanding of the consequences of such consumption. The present experiment aimed to compare male and female rats, first, in terms of cognitive and metabolic impairments produced by excessive intakes of 10% sucrose solution (Stage 1:8 weeks) and, second, with regard to recovery once access to sucrose ceased (Stage 2:4 weeks). All animals had unrestricted access to chow and water throughout. The primary cognitive outcome was performance on a place recognition task. The primary metabolic outcome was retroperitoneal fat pad mass/kg bodyweight at cull, with body weight and glucose tolerance as secondary outcomes. In a 3 × 2 between-subject factorial design the first factor was whether rats had: (1) unlimited access to a 10% sucrose solution and water throughout both stages (Suc-Suc); (2) were switched from sucrose in the 8-week Stage 1 to water only in the 4-week Stage 2 (Suc-Water); or (3) had no access to sucrose in either stage (Water-Water). The second factor was sex. A major metabolic outcome was that of persistent adiposity in both males and females in the Suc-Water condition. As for place recognition, females in the Suc-Suc condition showed greater long-term resistance than males to the impact of excessive sucrose on spatial memory impairment. Overall, few sex differences were found in secondary metabolic outcomes.
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Affiliation(s)
- Simone Rehn
- School of Psychology, University of Sydney, Australia
| | | | | | - Kieron B Rooney
- Faculty of Health Science, Charles Perkins Centre, University of Sydney, Australia
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20
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Lin C, Inoue M, Li X, Bosak NP, Ishiwatari Y, Tordoff MG, Beauchamp GK, Bachmanov AA, Reed DR. Genetics of mouse behavioral and peripheral neural responses to sucrose. Mamm Genome 2021; 32:51-69. [PMID: 33713179 DOI: 10.1007/s00335-021-09858-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 02/08/2021] [Indexed: 01/04/2023]
Abstract
Mice of the C57BL/6ByJ (B6) strain have higher consumption of sucrose, and stronger peripheral neural responses to it, than do mice of the 129P3/J (129) strain. To identify quantitative trait loci (QTLs) responsible for this strain difference and to evaluate the contribution of peripheral taste responsiveness to individual differences in sucrose intake, we produced an intercross (F2) of 627 mice, measured their sucrose consumption in two-bottle choice tests, recorded the electrophysiological activity of the chorda tympani nerve elicited by sucrose in a subset of F2 mice, and genotyped the mice with DNA markers distributed in every mouse chromosome. We confirmed a sucrose consumption QTL (Scon2, or Sac) on mouse chromosome (Chr) 4, harboring the Tas1r3 gene, which encodes the sweet taste receptor subunit TAS1R3 and affects both behavioral and neural responses to sucrose. For sucrose consumption, we also detected five new main-effect QTLs, Scon6 (Chr2), Scon7 (Chr5), Scon8 (Chr8), Scon3 (Chr9), and Scon9 (Chr15), and an epistatically interacting QTL pair Scon4 (Chr1) and Scon3 (Chr9). No additional QTLs for the taste nerve responses to sucrose were detected besides Scon2 (Tas1r3) on Chr4. Identification of the causal genes and variants for these sucrose consumption QTLs may point to novel mechanisms beyond peripheral taste sensitivity that could be harnessed to control obesity and diabetes.
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Affiliation(s)
- Cailu Lin
- Monell Chemical Senses Center, Philadelphia, PA, USA
| | - Masashi Inoue
- Monell Chemical Senses Center, Philadelphia, PA, USA.,Laboratory of Cellular Neurobiology, School of Life Science, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, Japan
| | - Xia Li
- Monell Chemical Senses Center, Philadelphia, PA, USA.,Sonora Quest Laboratories, Phoenix, AZ, USA
| | | | - Yutaka Ishiwatari
- Monell Chemical Senses Center, Philadelphia, PA, USA.,Ajinomoto Co., Inc., Tokyo, Japan
| | | | | | - Alexander A Bachmanov
- Monell Chemical Senses Center, Philadelphia, PA, USA. .,GlaxoSmithKline, Collegeville, PA, USA.
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Tsan L, Décarie-Spain L, Noble EE, Kanoski SE. Western Diet Consumption During Development: Setting the Stage for Neurocognitive Dysfunction. Front Neurosci 2021; 15:632312. [PMID: 33642988 PMCID: PMC7902933 DOI: 10.3389/fnins.2021.632312] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/19/2021] [Indexed: 01/18/2023] Open
Abstract
The dietary pattern in industrialized countries has changed substantially over the past century due to technological advances in agriculture, food processing, storage, marketing, and distribution practices. The availability of highly palatable, calorically dense foods that are shelf-stable has facilitated a food environment where overconsumption of foods that have a high percentage of calories derived from fat (particularly saturated fat) and sugar is extremely common in modern Westernized societies. In addition to being a predictor of obesity and metabolic dysfunction, consumption of a Western diet (WD) is related to poorer cognitive performance across the lifespan. In particular, WD consumption during critical early life stages of development has negative consequences on various cognitive abilities later in adulthood. This review highlights rodent model research identifying dietary, metabolic, and neurobiological mechanisms linking consumption of a WD during early life periods of development (gestation, lactation, juvenile and adolescence) with behavioral impairments in multiple cognitive domains, including anxiety-like behavior, learning and memory function, reward-motivated behavior, and social behavior. The literature supports a model in which early life WD consumption leads to long-lasting neurocognitive impairments that are largely dissociable from WD effects on obesity and metabolic dysfunction.
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Affiliation(s)
- Linda Tsan
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, United States.,Department of Biological Sciences, Human and Evolutionary Biology Section, University of Southern California, Los Angeles, CA, United States
| | - Léa Décarie-Spain
- Department of Biological Sciences, Human and Evolutionary Biology Section, University of Southern California, Los Angeles, CA, United States
| | - Emily E Noble
- Department of Foods and Nutrition, University of Georgia, Athens, GA, United States
| | - Scott E Kanoski
- Neuroscience Graduate Program, University of Southern California, Los Angeles, CA, United States.,Department of Biological Sciences, Human and Evolutionary Biology Section, University of Southern California, Los Angeles, CA, United States
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22
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de la Garza AL, Romero-Delgado B, Martínez-Tamez AM, Cárdenas-Tueme M, Camacho-Zamora BD, Matta-Yee-Chig D, Sánchez-Tapia M, Torres N, Camacho-Morales A. Maternal Sweeteners Intake Modulates Gut Microbiota and Exacerbates Learning and Memory Processes in Adult Male Offspring. Front Pediatr 2021; 9:746437. [PMID: 35071124 PMCID: PMC8777273 DOI: 10.3389/fped.2021.746437] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 09/02/2021] [Indexed: 12/23/2022] Open
Abstract
Background: There is increasing evidence that gut microbiota in offspring is derived in part from maternal environment such as diet. Thus, sweeteners intake including caloric or non-caloric during perinatal period can induce gut dysbiosis and program the offspring to develop cognitive problems later in life. Objective: To determine the effect of maternal high-sweeteners intake during gestation and lactation on gut microbiota shifts in adult male offspring rats and the impact on cognitive dysfunction. Methods: Thirty-four male pups from dams fed standard diet (Control-C, n = 10), high-sucrose diet (HS-C, n = 11), high-honey diet (Ho-C, n = 8), and high-stevia diet (HSt-C, n = 5) were fed standard diet after weaning, and body weight and food intake were recorded once a week for 26 weeks. Learning and memory tests were performed at week 23 of life using the Barnes maze. Fecal samples from the breastfeeding and adulthood periods were collected and analyzed by sequencing the 16S rRNA V3-V4 region of gut microbiota. Results: Maternal high-sucrose and stevia diets programmed the male offspring, and changes in microbial diversity by Shannon index were observed after weaning (p < 0.01). Furthermore, maternal high-stevia diet programming lasted into adulthood. The increase of Firmicutes abundance and the decrease in phylum Bacteroidetes were significant in HS-C and HSt-C groups. This led to an increase in the Firmicutes/Bacteroidetes index, although only in HS-C group was statistically significant (p < 0.05). Of note, the downstream gram-negative Bacteroidales and the upregulation of the gram-positive Clostridiales abundance contribute to cognitive dysfunction. Conclusion: These results suggest that dams fed a high-sucrose and stevia diets during gestation and lactation favor a deficient memory performance in adult male offspring rats through shifts gut microbiota diversity and relative abundance at several taxa.
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Affiliation(s)
- Ana Laura de la Garza
- Universidad Autónoma de Nuevo León, Facultad de Salud Pública y Nutrición, Centro de Investigación en Nutrición y Salud Pública, Monterrey, Mexico.,Universidad Autónoma de Nuevo León, Unidad de Nutrición, Centro de Investigación y Desarrollo en Ciencias de la Salud, Monterrey, Mexico
| | - Bianca Romero-Delgado
- Universidad Autónoma de Nuevo León, Facultad de Salud Pública y Nutrición, Centro de Investigación en Nutrición y Salud Pública, Monterrey, Mexico
| | - Alejandra Mayela Martínez-Tamez
- Universidad Autónoma de Nuevo León, Facultad de Salud Pública y Nutrición, Centro de Investigación en Nutrición y Salud Pública, Monterrey, Mexico
| | - Marcela Cárdenas-Tueme
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Departamento de Biología Celular y Genética, Monterrey, Mexico
| | - Bianka Dianey Camacho-Zamora
- Universidad Autónoma de Nuevo León, Unidad de Genómica, Centro de Investigación y Desarrollo en Ciencias de la Salud, Monterrey, Mexico
| | - Daniel Matta-Yee-Chig
- Universidad Autónoma de Nuevo León, Unidad de Genómica, Centro de Investigación y Desarrollo en Ciencias de la Salud, Monterrey, Mexico
| | - Mónica Sánchez-Tapia
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico
| | - Nimbe Torres
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico
| | - Alberto Camacho-Morales
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Bioquímica, Monterrey, Mexico.,Universidad Autónoma de Nuevo León, Unidad de Neurometabolismo, Centro de Investigación y Desarrollo en Ciencias de la Salud, Monterrey, Mexico
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23
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Treading water: mixed effects of high fat diet on mouse behavior in the forced swim test. Physiol Behav 2020; 223:112965. [DOI: 10.1016/j.physbeh.2020.112965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 05/02/2020] [Accepted: 05/10/2020] [Indexed: 12/27/2022]
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24
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Espinosa‐García C, Fuentes‐Venado CE, Guerra‐Araiza C, Segura‐Uribe J, Chávez‐Gutiérrez E, Farfán‐García ED, Estrada Cruz NA, Pinto‐Almazán R. Sex differences in the performance of cognitive tasks in a murine model of metabolic syndrome. Eur J Neurosci 2020; 52:2724-2736. [DOI: 10.1111/ejn.14751] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Claudia Espinosa‐García
- Department of Emergency Medicine Emory University Atlanta GA USA
- Laboratorio de Biología Molecular en Enfermedades Metabólicas y Neurodegenerativas Unidad de InvestigaciónHospital Regional de Alta Especialidad de Ixtapaluca Ixtapaluca Mexico
| | - Claudia Erika Fuentes‐Venado
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades Centro Médico Nacional Siglo XXIInstituto Mexicano del Seguro Social Mexico City Mexico
- Servicio de Medicina Física y Rehabilitación Hospital General de Zona No 197 Texcoco Mexico
- Doctorado en Ciencias Biológicas y de la Salud Universidad Autónoma Metropolitana Unidad Iztapalapa Mexico City Mexico
| | - Christian Guerra‐Araiza
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades Centro Médico Nacional Siglo XXIInstituto Mexicano del Seguro Social Mexico City Mexico
| | - Julia Segura‐Uribe
- Unidad de Investigación Médica en Enfermedades Neurológicas Centro Médico Nacional Siglo XXIInstituto Mexicano del Seguro Social Mexico City Mexico
- Departamento de Investigación Hospital Infantil de México Federico GómezSecretaría de Salud Mexico City Mexico
| | - Edwin Chávez‐Gutiérrez
- Laboratorio de Biología Molecular en Enfermedades Metabólicas y Neurodegenerativas Unidad de InvestigaciónHospital Regional de Alta Especialidad de Ixtapaluca Ixtapaluca Mexico
| | - Eunice Dalet Farfán‐García
- Departamento de Fisiología, Sección de Estudios de Posgrado e Investigación. Escuela Superior de Medicina, Instituto Politécnico Nacional. Mexico City Mexico
| | - Norma Angélica Estrada Cruz
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades Centro Médico Nacional Siglo XXIInstituto Mexicano del Seguro Social Mexico City Mexico
| | - Rodolfo Pinto‐Almazán
- Laboratorio de Biología Molecular en Enfermedades Metabólicas y Neurodegenerativas Unidad de InvestigaciónHospital Regional de Alta Especialidad de Ixtapaluca Ixtapaluca Mexico
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25
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Choe WH, Lee KA, Goto Y, Lee YA. Concurrent and Delayed Behavioral and Monoamine Alterations by Excessive Sucrose Intake in Juvenile Mice. Front Neurosci 2020; 14:504. [PMID: 32508582 PMCID: PMC7248345 DOI: 10.3389/fnins.2020.00504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/22/2020] [Indexed: 01/21/2023] Open
Abstract
Our daily diet in the modern society has substantially changed from that in the ancient past. Consequently, new disorders associated with such dietary changes have emerged. For instance, excessive intake of compounds, such as sucrose (SUC), has recently been reported to induce pathological neuronal changes in adults, such as food addiction. It is still largely unclear whether and how excessive intake of such nutrients affects neurodevelopment. We investigated changes in behavior and monoamine signaling caused by excessive, semi-chronic intake of SUC and the non-caloric sweetener saccharin (SAC) in juvenile mice, using a battery of behavioral tests and high-performance liquid chromatography. Both SUC and SAC intake induced behavioral alterations such as altered amphetamine responses, sucrose preference, stress response, and anxiety, but did not affect social behavior and cognitive function such as attention in juvenile and adult mice. Moreover, SUC and SAC also altered dopamine and serotonin transmission in mesocorticolimbic regions. Some of these behavioral and neural alterations were triggered by SAC and SUC but others were distinct between the treatments. Moreover, alterations induced in juvenile mice were also different from those observed in adult mice. These results suggest that excessive SUC and SAC intake during the juvenile period may cause concurrent and delayed behavioral and monoamine signaling alterations in juvenile and adult mice, respectively.
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Affiliation(s)
- Won-Hui Choe
- Department of Food Science and Nutrition, Daegu Catholic University, Gyeongsan, South Korea
| | - Kyung-A Lee
- Department of Food Science and Nutrition, Daegu Catholic University, Gyeongsan, South Korea
| | - Yukiori Goto
- Primate Research Institute, Kyoto University, Kyoto, Japan
| | - Young-A Lee
- Department of Food Science and Nutrition, Daegu Catholic University, Gyeongsan, South Korea
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26
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Leigh SJ, Kaakoush NO, Bertoldo MJ, Westbrook RF, Morris MJ. Intermittent cafeteria diet identifies fecal microbiome changes as a predictor of spatial recognition memory impairment in female rats. Transl Psychiatry 2020; 10:36. [PMID: 32066702 PMCID: PMC7026185 DOI: 10.1038/s41398-020-0734-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 11/20/2019] [Accepted: 11/27/2019] [Indexed: 12/12/2022] Open
Abstract
Excessive consumption of diets high in saturated fat and sugar impairs short-term spatial recognition memory in both humans and rodents. Several studies have identified associations between the observed behavioral phenotype and diet-induced changes in adiposity, hippocampal gene expression of inflammatory and blood-brain barrier-related markers, and gut microbiome composition. However, the causal role of such variables in producing cognitive impairments remains unclear. As intermittent cafeteria diet access produces an intermediate phenotype, we contrasted continuous and intermittent diet access to identify specific changes in hippocampal gene expression and microbial species that underlie the cognitive impairment observed in rats fed continuous cafeteria diet. Female adult rats were fed either regular chow, continuous cafeteria diet, or intermittent cafeteria diet cycles (4 days regular chow and 3 days cafeteria) for 7 weeks (12 rats per group). Any cafeteria diet exposure affected metabolic health, hippocampal gene expression, and gut microbiota, but only continuous access impaired short-term spatial recognition memory. Multiple regression identified an operational taxonomic unit, from species Muribaculum intestinale, as a significant predictor of performance in the novel place recognition task. Thus, contrasting intermittent and continuous cafeteria diet exposure allowed us to identify specific changes in microbial species abundance and growth as potential underlying mechanisms relevant to diet-induced cognitive impairment.
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Affiliation(s)
- Sarah-Jane Leigh
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
| | - Nadeem O. Kaakoush
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
| | - Michael J. Bertoldo
- grid.1005.40000 0004 4902 0432Fertility and Research Centre, School of Women’s and Children’s Health, UNSW, Sydney, NSW 2052 Australia
| | | | - Margaret J. Morris
- grid.1005.40000 0004 4902 0432School of Medical Sciences, UNSW, Sydney, NSW 2052 Australia
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27
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The effect of high fat, high sugar, and combined high fat-high sugar diets on spatial learning and memory in rodents: A meta-analysis. Neurosci Biobehav Rev 2019; 107:399-421. [DOI: 10.1016/j.neubiorev.2019.08.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 08/02/2019] [Accepted: 08/12/2019] [Indexed: 12/29/2022]
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28
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Pattern of access to cafeteria-style diet determines fat mass and degree of spatial memory impairments in rats. Sci Rep 2019; 9:13516. [PMID: 31534169 PMCID: PMC6751189 DOI: 10.1038/s41598-019-50113-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 08/15/2019] [Indexed: 02/05/2023] Open
Abstract
Repeated ‘cycling’ between healthy and unhealthy eating is increasingly common but the effects of such cycling on cognitive function are unknown. Here we tested the effects of cycling between chow and a cafeteria diet (CAF) rich in saturated fat and refined carbohydrates on fat mass and place recognition memory in rats. Rats fed the chow diet (control group) were compared with groups fed CAF for either: 3 consecutive days per week followed by 4 days of chow, (3CAF:4CHOW group); 5 consecutive days per week followed by 2 days of chow (5CAF:2CHOW group); or 7 days per week (7CAF group). Total days of exposure to CAF were matched between the latter groups by staggering the introduction of CAF diet. After 16–18 days of CAF, spatial recognition memory was significantly worse in the 7CAF group relative to controls. After 23–25 days of CAF, both the 7CAF and 5CAF:2CHOW groups, but not the 3CAF:4CHOW group, were impaired relative to controls, mirroring changes in fat mass measured by EchoMRI. CAF feeding did not affect object recognition memory or total exploration time. These results indicate that even when matching total exposure, the pattern of access to unhealthy diets impairs spatial memory in a graded fashion.
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29
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Behavioral profile of intermittent vs continuous access to a high fat diet during adolescence. Behav Brain Res 2019; 368:111891. [PMID: 31009646 DOI: 10.1016/j.bbr.2019.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/13/2019] [Accepted: 04/03/2019] [Indexed: 12/28/2022]
Abstract
Over the past few years, the effects of a high-fat diet (HFD) on cognitive functions have been broadly studied as a model of obesity, although no studies have evaluated whether these effects are maintained after the cessation of this diet. In addition, the behavioral effects of having a limited access to an HFD (binge-eating pattern) are mostly unknown, although they dramatically increase the vulnerability to drug use in contrast to having continuous access. Thus, the aim of the present study was to compare the effects of an intermittent versus a continuous exposure to an HFD during adolescence on cognition and anxiety-like behaviors, as well as to study the changes observed after the interruption of this diet. Adolescent male mice received for 40 days a standard diet, an HFD with continuous access or an HFD with sporadic limited access (2 h, three days a week). Two additional groups were fed with intermittent or continuous access to the HFD and withdrawn from this diet 15 days before the behavioral tests. Only the animals with a continuous access to the HFD showed higher circulating leptin levels, increased bodyweight, marked memory and spatial learning deficits, symptoms that disappeared after 15 days of HFD abstinence. Mice that binged on fat only showed hyperlocomotion, which normalized after 15 days of HFD cessation. However, discontinuation of fat, either in a binge or a continuous pattern, led to an increase in anxiety-like behavior. These results highlight that exposure to a high-fat diet during adolescence induces alterations in brain functions, although the way in which this diet is ingested determines the extent of these behavioral changes.
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30
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Impact of high sucrose diets on the discrimination of spatial and object memories with overlapping features. Physiol Behav 2018; 192:127-133. [DOI: 10.1016/j.physbeh.2018.02.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 01/06/2023]
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31
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Abstract
PURPOSE OF REVIEW Recent evidence documents the negative impact of obesity, diabetes mellitus, and other metabolic dysregulation on neurocognitive function. This review highlights a key dietary factor in these relationships: refined carbohydrates. RECENT FINDINGS Chronic consumption of refined carbohydrates has been linked to relative neurocognitive deficits across the lifespan. Hippocampal function is especially impacted, but prefrontal and mesolimbic reward pathways may also be altered. Early life exposure to refined carbohydrates, (i.e., prenatal, juvenile, and adolescence periods) may be particularly toxic to cognitive functioning. The impact of acute carbohydrate administration is mixed, with some findings showing benefits while others are neutral or negative. Potential mechanisms of the carbohydrate-cognition relationship include dysregulation in metabolic, inflammatory, and vascular factors, whereas moderators include age, genetic factors, physiological (e.g., glucoregulatory) function and the timing and type of carbohydrate exposure. Critically, the negative neurocognitive impacts of diets high in refined carbohydrates have been shown to be independent of total body weight. SUMMARY Neurocognitive deficits induced by a diet high in refined carbohydrates may manifest before overt obesity or metabolic disease onset, suggesting that researchers and providers may need to target subclinical metabolic, inflammatory, and vascular dysregulation factors in efforts to preserve cognitive function across the lifespan.
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Affiliation(s)
- Misty A W Hawkins
- Department of Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
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32
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Metabolic and cognitive improvement from switching to saccharin or water following chronic consumption by female rats of 10% sucrose solution. Physiol Behav 2018; 188:162-172. [DOI: 10.1016/j.physbeh.2018.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/01/2018] [Accepted: 02/03/2018] [Indexed: 11/23/2022]
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33
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Xu TJ, Reichelt AC. Sucrose or sucrose and caffeine differentially impact memory and anxiety-like behaviours, and alter hippocampal parvalbumin and doublecortin. Neuropharmacology 2018; 137:24-32. [PMID: 29729502 DOI: 10.1016/j.neuropharm.2018.04.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 11/26/2022]
Abstract
Caffeinated sugar-sweetened "energy" drinks are a subset of soft drinks that are popular among young people worldwide. High sucrose diets impair cognition and alter aspects of emotional behaviour in rats, however, little is known about sucrose combined with caffeine. Rats were allocated to 2 h/day 10% sucrose (Suc), 10% sucrose plus 0.04% caffeine (CafSuc) or control (water) conditions. The addition of caffeine to sucrose appeared to increase the rewarding aspect of sucrose, as the CafSuc group consumed more solution than the Suc group. After 14 days of intermittent Suc or CafSuc access, anxiety was assessed in the elevated plus maze (EPM) prior to their daily solution access, whereby CafSuc and Suc rats spent more time in the closed arms, indicative of increased anxiety. Following daily solution access, CafSuc, but not Suc, rats showed reduced anxiety-like behaviour in the open-field. Control and CafSuc rats displayed intact place and long-term object memory, while Suc showed impaired memory performance. Sucrose reduced parvalbumin immunoreactivity in the hippocampus, but no differences were observed between Control and CafSuc conditions. Parvalbumin reactivity in the basolateral amygdala did not differ between conditions. Reduced doublecortin immunoreactivity in the dentate gyrus relative to controls was seen in the CafSuc, but not Suc, treatment conditions. These findings indicate that the addition of caffeine to sucrose attenuated cognitive deficits. However, the addition of caffeine to sucrose evoked anxiety-like responses under certain testing conditions, suggesting that frequent consumption of caffeinated energy drinks may promote emotional alterations and brain changes compared to standard soft drinks.
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Affiliation(s)
- Tanya J Xu
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic 3083, Australia
| | - Amy C Reichelt
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic 3083, Australia.
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34
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Dietary influences on cognition. Physiol Behav 2018; 192:118-126. [PMID: 29501837 DOI: 10.1016/j.physbeh.2018.02.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 01/01/2023]
Abstract
Obesity is a world-wide crisis with profound healthcare and socio-economic implications and it is now clear that the central nervous system (CNS) is a target for the complications of metabolic disorders like obesity. In addition to decreases in physical activity and sedentary lifestyles, diet is proposed to be an important contributor to the etiology and progression of obesity. Unfortunately, there are gaps in our knowledge base related to how dietary choices impact the structural and functional integrity of the CNS. For example, while chronic consumption of hypercaloric diets (increased sugars and fat) contribute to increases in body weight and adiposity characteristic of metabolic disorders, the mechanistic basis for neurocognitive deficits in obesity remains to be determined. In addition, studies indicate that acute consumption of hypercaloric diets impairs performance in a wide variety of cognitive domains, even in normal non-obese control subjects. These results from the clinical and basic science literature indicate that diet can have rapid, as well as long lasting effects on cognitive function. This review summarizes our symposium at the 2017 Society for the Study of Ingestive Behavior (SSIB) meeting that discussed these effects of diet on cognition. Collectively, this review highlights the need for integrated and comprehensive approaches to more fully determine how diet impacts behavior and cognition under physiological conditions and in metabolic disorders like type 2 diabetes mellitus (T2DM) and obesity.
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35
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Sangüesa G, Cascales M, Griñán C, Sánchez RM, Roglans N, Pallàs M, Laguna JC, Alegret M. Impairment of Novel Object Recognition Memory and Brain Insulin Signaling in Fructose- but Not Glucose-Drinking Female Rats. Mol Neurobiol 2018; 55:6984-6999. [DOI: 10.1007/s12035-017-0863-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 12/22/2017] [Indexed: 01/10/2023]
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36
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Reichelt AC, Rank MM. The impact of junk foods on the adolescent brain. Birth Defects Res 2017; 109:1649-1658. [DOI: 10.1002/bdr2.1173] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/31/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Amy C. Reichelt
- Discipline of Psychology, School of Health and Biomedical Sciences; RMIT University; Melbourne VIC 3083 Australia
| | - Michelle M. Rank
- Discipline of Psychology, School of Health and Biomedical Sciences; RMIT University; Melbourne VIC 3083 Australia
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37
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Sample CH, Davidson TL. Considering sex differences in the cognitive controls of feeding. Physiol Behav 2017; 187:97-107. [PMID: 29174819 DOI: 10.1016/j.physbeh.2017.11.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 01/24/2023]
Abstract
Women are disproportionately affected by obesity, and obesity increases women's risk of developing dementia more so than men. Remarkably little is known about how females make decisions about when and how much to eat. Research in animal models with males supports a framework in which previous experiences with external food cues and internal physiological energy states, and the ability to retrieve memories of the consequences of eating, determines subsequent food intake. Additional evidence indicates that consumption of a high-fat, high-sugar diet interferes with hippocampal-dependent mnemonic processes that operate to suppress eating, such as in situations of satiety. Recent findings also indicate that weakening this form of hippocampal-dependent inhibitory control may also extend to other forms of learning and memory, perpetuating a vicious cycle of increased Western diet intake, hippocampal dysfunction, and further impairments in the suppression of appetitive behavior that may ultimately disrupt other types of memorial interference resolution. How these basic learning and memory processes operate in females to guide food intake has received little attention. Ovarian hormones appear to protect females from obesity and metabolic impairments, as well as modulate learning and memory processes, but little is known about how these hormones modulate learned appetitive behavior. Even less is known about how a sex-specific environmental factor - widespread hormonal contraceptive use - affects associative learning and the regulation of food intake. Extending learned models of food intake to females will require considerably investigation at many levels (e.g., reproductive status, hormonal compound, parity). This work could yield critical insights into the etiology of obesity, and its concomitant cognitive impairment, for both sexes.
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Affiliation(s)
- Camille H Sample
- Center for Behavioral Neuroscience, Department of Psychology, American University, Washington, DC, United States.
| | - Terry L Davidson
- Center for Behavioral Neuroscience, Department of Psychology, American University, Washington, DC, United States
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38
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Sbisa AM, Gogos A, van den Buuse M. Spatial working memory in the touchscreen operant platform is disrupted in female rats by ovariectomy but not estrous cycle. Neurobiol Learn Mem 2017; 144:147-154. [PMID: 28729138 DOI: 10.1016/j.nlm.2017.07.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 05/31/2017] [Accepted: 07/15/2017] [Indexed: 12/12/2022]
Abstract
Learning and memory deficits have been described in rats and mice after ovariectomy (OVX) and across the estrous cycle. Preclinical researchers therefore often avoid using female animals and, consequently, a large male bias exists in the preclinical cognitive literature. In the present study we examined the role of sex hormones in the touchscreen operant platform using the spatial working memory trial unique nonmatching-to-location (TUNL) task. Twenty-nine Long Evans rats were trained to acquire the TUNL task including three incremental spatial separations (S0, S1, S2). Following 20 consecutive days of training, subjects in experiment 1 (n=15) remained intact and immediately progressed to TUNL testing, while subjects in experiment 2 were OVX (n=6) or sham-operated (n=8) prior to testing. Subjects were tested on 4 spatial separations (S0-3) with a 1s or 6s delay between the sample and nonmatching stimuli. The estrous cycle of intact rats was monitored during the 4weeks of testing. The estrous cycle phase did not significantly affect performance. In contrast, compared to intact rats, OVX impaired performance at larger spatial separations (S2-3) during the 1s delay condition. Further, during the 6s delay, OVX impaired S2 performance, however not S3. Our results suggest a probable shift in cognitive strategy following OVX, when tested with a large and novel spatial separation. Our findings suggest that ovarian hormone deprivation following OVX, but not estrous cycle, impairs spatial working memory as measured by the TUNL task. This research is relevant for future studies utilising the touchscreen TUNL task and for cognitive testing of female rats.
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Affiliation(s)
- Alyssa M Sbisa
- Hormones in Psychiatry Laboratory, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia; School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, Australia
| | - Andrea Gogos
- Hormones in Psychiatry Laboratory, The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Victoria, Australia
| | - Maarten van den Buuse
- School of Psychology and Public Health, La Trobe University, Bundoora, Victoria, Australia; Department of Pharmacology, University of Melbourne, Victoria, Australia; The College of Public Health, Medical and Veterinary Sciences, James Cook University, Queensland, Australia.
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Wong A, Dogra VR, Reichelt AC. High-sucrose diets in male rats disrupt aspects of decision making tasks, motivation and spatial memory, but not impulsivity measured by operant delay-discounting. Behav Brain Res 2017; 327:144-154. [DOI: 10.1016/j.bbr.2017.03.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/15/2017] [Accepted: 03/18/2017] [Indexed: 10/19/2022]
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Papacostas-Quintanilla H, Ortiz-Ortega VM, López-Rubalcava C. Wistar-Kyoto Female Rats Are More Susceptible to Develop Sugar Binging: A Comparison with Wistar Rats. Front Nutr 2017; 4:15. [PMID: 28536692 PMCID: PMC5422445 DOI: 10.3389/fnut.2017.00015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/18/2017] [Indexed: 01/27/2023] Open
Abstract
The hedonic component of the feeding behavior involves the mesolimbic reward system and resembles addictions. Nowadays, the excessive consumption of sucrose is considered addictive. The Wistar-Kyoto (WKY) rat strain is prone to develop anxiety and addiction-like behavior; nevertheless, a lack of information regarding their vulnerability to develop sugar binging-like behavior (SBLB) and how it affects the reward system persist. Therefore, the first aim of the present study was to compare the different predisposition of two rat strains, Wistar (W) and WKY to develop the SBLB in female and male rats. Also, we studied if the SBLB-inducing protocol produces changes in anxiety-like behavior using the plus-maze test (PMT) and, analyzed serotonin (5-HT) and noradrenaline (NA) concentrations in brain areas related to anxiety and ingestive behavior (brain stem, hypothalamus, nucleus accumbens, and amygdala). Finally, we evaluated whether fluoxetine, a drug that has been effective in reducing the binge-eating frequency, body weight, and severity of binge eating disorder, could also block this behavior. Briefly, WKY and W female rats were exposed to 30% sucrose solution (2 h, 3 days/week for 4 weeks), and fed up ad libitum. PMT was performed between the last two test periods. Immediately after the last test where sucrose access was available, rats were decapitated and brain areas extracted for high-performance liquid chromatography analysis. The results showed that both W and WKY female and male rats developed the SBLB. WKY rats consumed more calories and ingested a bigger amount of sucrose solution than their W counterpart. This behavior was reversed by using fluoxetine, rats exposed to the SBLB-inducing protocol presented a rebound effect during the washout period. On female rats, the SBLB-inducing protocol induced changes in NA concentrations on WKY, but not on W rats. No changes were found in 5-HT levels. Finally, animals that developed SBLB showed increased anxiety-like behavior in the PMT. In conclusion, WKY female rats can be considered as a more susceptible rat strain to develop SBLB.
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Affiliation(s)
- Helena Papacostas-Quintanilla
- Laboratorio de Psicofarmacología y Trastornos de la Alimentación, Departamento de Farmacobiología, CINVESTAV, Ciudad de México, Mexico
| | - Víctor Manuel Ortiz-Ortega
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico
| | - Carolina López-Rubalcava
- Laboratorio de Psicofarmacología y Trastornos de la Alimentación, Departamento de Farmacobiología, CINVESTAV, Ciudad de México, Mexico
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The impact of a junk-food diet during development on ‘wanting’ and ‘liking’. Behav Brain Res 2017; 317:163-178. [DOI: 10.1016/j.bbr.2016.09.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 09/15/2016] [Accepted: 09/16/2016] [Indexed: 11/22/2022]
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Reichelt AC, Morris MJ, Westbrook RF. Daily access to sucrose impairs aspects of spatial memory tasks reliant on pattern separation and neural proliferation in rats. ACTA ACUST UNITED AC 2016; 23:386-90. [PMID: 27317199 PMCID: PMC4918785 DOI: 10.1101/lm.042416.116] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/27/2016] [Indexed: 11/24/2022]
Abstract
High sugar diets reduce hippocampal neurogenesis, which is required for minimizing interference between memories, a process that involves “pattern separation.” We provided rats with 2 h daily access to a sucrose solution for 28 d and assessed their performance on a spatial memory task. Sucrose consuming rats discriminated between objects in novel and familiar locations when there was a large spatial separation between the objects, but not when the separation was smaller. Neuroproliferation markers in the dentate gyrus of the sucrose-consuming rats were reduced relative to controls. Thus, sucrose consumption impaired aspects of spatial memory and reduced hippocampal neuroproliferation.
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Affiliation(s)
- Amy C Reichelt
- School of Psychology, UNSW Australia, UNSW Sydney, New South Wales 2052, Australia
| | - Margaret J Morris
- School of Medical Sciences, UNSW Australia, UNSW Sydney, New South Wales 2052, Australia
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