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Parent MB, Whitley KE, Zafar U, Zickgraf HF, Sharp WG. Systematic review of pharmacological treatments that reduce conditioned taste aversions in rodents: A potential animal model of pediatric feeding disorder and avoidant/restrictive food intake disorder (ARFID). Appetite 2024; 194:107172. [PMID: 38135183 DOI: 10.1016/j.appet.2023.107172] [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: 10/05/2023] [Revised: 11/22/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023]
Abstract
Avoidant/restrictive food intake disorder (ARFID) is diagnosed when food avoidance leads to clinically significant nutritional, weight/growth, or psychosocial impairment. As many as 81.5% of children and adolescents diagnosed with ARFID have a history of a medical condition associated with pain, fatigue, or malaise. ARFID is diagnosed and treatment begins after the medical condition is resolved but food avoidance remains. Effective treatment involves repeated exposure to eating food and related stimuli aimed at creating inhibitory learning to counteract learned fears and aversions. Treatment usually involves positive reinforcement of food approach behavior and escape extinction/response prevention to eliminate food avoidant behavior. To shed light on the neural mechanisms that may maintain ARFID and to identify candidate pharmacological treatments for adjuncts to behavioral interventions, this paper systematically reviews research on drug treatments that successfully reduce conditioned taste aversions (CTA) in animal models by disrupting reconsolidation or promoting extinction. The mechanism of action of these treatments, brain areas involved, and whether these CTA findings have been used to understand human eating behavior are assessed. Collectively, the results provide insight into possible neural mechanisms associated with resuming oral intake following CTA akin to the therapeutic goals of ARFID treatment and suggest that CTA animal models hold promise to facilitate the development of interventions to prevent feeding problems. The findings also reveal the need to investigate CTA reduction in juvenile and female animals and show that CTA is rarely studied to understand disordered human feeding even though CTA has been observed in humans and parallels many of the characteristics of rodent CTA.
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Affiliation(s)
- Marise B Parent
- Neuroscience Institute, Georgia State University, Atlanta, GA, USA; Department of Psychology, Georgia State University, Atlanta, GA, USA.
| | | | - Usama Zafar
- Neuroscience Institute, Georgia State University, Atlanta, GA, USA
| | - Hana F Zickgraf
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - William G Sharp
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Children's Healthcare of Atlanta, Atlanta, GA, USA
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Bektas S, Natali L, Rowlands K, Valmaggia L, Di Pietro J, Mutwalli H, Himmerich H, Treasure J, Cardi V. Exploring Correlations of Food-Specific Disgust with Eating Disorder Psychopathology and Food Interaction: A Preliminary Study Using Virtual Reality. Nutrients 2023; 15:4443. [PMID: 37892518 PMCID: PMC10609698 DOI: 10.3390/nu15204443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/02/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
The emotion of disgust is thought to play a critical role in maintaining restrictive eating among individuals with anorexia nervosa. This exploratory cross-sectional study examined correlations between food-specific trait and state disgust, eating disorder psychopathology, illness severity (body mass index: BMI), and interactions with virtual foods in people with anorexia nervosa. Food-specific trait disgust and eating disorder symptoms were measured before exposure to virtual foods in one of three virtual reality (VR) kitchens to which participants were randomly allocated. Food interactions (eye gaze and reaching towards virtual foods) were measured during the VR exposure. Food-specific state disgust ratings were collected after the VR exposure. In the entire sample, eating disorder symptoms correlated positively with food-specific trait disgust (rs (68) = 0.45, p < 0.001). We also found a significant association between food-specific state disgust and eating disorder symptoms in each virtual kitchen scenario: virtual kitchen only (rs (22) = 0.40, p = 0.05), virtual kitchen plus pet (rs (22) = 0.80, p < 0.001), and virtual kitchen plus avatar (rs (20) = 0.78, p < 0.001). No significant correlation was observed for the link between food-specific disgust measures and food-related touch. Correlations between food-specific trait disgust and food-related eye gaze differed across scenarios. The current experimental paradigm needs to be improved to draw firm conclusions. Both food-specific trait and state disgust are associated with eating disorder psychopathology, and therefore, effective strategies are warranted to attenuate food-specific disgust.
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Affiliation(s)
- Sevgi Bektas
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
- Department of Psychology, Hacettepe University, Ankara 06800, Türkiye
| | - Ludovica Natali
- Department of General Psychology, University of Padova, 35122 Padova, Italy
| | - Katie Rowlands
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
| | - Lucia Valmaggia
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London SE5 8AF, UK; (L.V.); (J.D.P.)
- South London and Maudsley NHS Foundation Trust, London SE5 8AB, UK
- Department of Psychiatry, KU Leuven, 3000 Leuven, Belgium
| | - Jerome Di Pietro
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London SE5 8AF, UK; (L.V.); (J.D.P.)
| | - Hiba Mutwalli
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
- Department of Clinical Nutrition, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
| | - Hubertus Himmerich
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
- South London and Maudsley NHS Foundation Trust, London SE5 8AB, UK
| | - Janet Treasure
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
- South London and Maudsley NHS Foundation Trust, London SE5 8AB, UK
| | - Valentina Cardi
- Centre for Research in Eating and Weight Disorders (CREW), Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London SE5 8AF, UK; (K.R.); (H.M.); (H.H.); (J.T.); (V.C.)
- Department of General Psychology, University of Padova, 35122 Padova, Italy
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