ArticleTranslational psychiatry2019
Immunoglobulin G modulation of the melanocortin 4 receptor signaling in obesity and eating disorders.
Article in Translational psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 40 citations in OpenAlex.
- Anorexia nervosa and microbiota: systematic review and critical appraisal.Eating and weight disorders : EWD · 2023Pooled it
- An evidence review of the association of immune and inflammatory markers with obesity-related eating behaviors.Frontiers in immunology · 2022Pooled it
- A systematic review on the role of microbiota in the pathogenesis and treatment of eating disorders.European psychiatry : the journal of the Association of European Psychiatrists · 2020Pooled it
- Dysregulated eating behaviour and microbiota-based interventions targeting eating disorders and food addiction.Gut microbes · 2026Review
- Refeeding the Gut in Anorexia Nervosa: Microbiome, Nutritional Rehabilitation and Dietetic Care.Nutrients · 2026Review
- Eating and Mental Health Disorders.Nutrients · 2026Article
- Targeted proteomics reveal α-MSH-like Enterobacterial ClpB protein in gut microbiota of patients with anorexia nervosa.NPJ biofilms and microbiomes · 2025Article
- Long-Term Dynamics of Serum α-MSH and α-MSH-Binding Immunoglobulins with a Link to Gut Microbiota Composition in Patients with Anorexia Nervosa.Neuroendocrinology · 2024Article
- Possible roles of neuropeptide/transmitter and autoantibody modulation in emotional problems and aggression.Frontiers in psychiatry · 2024Review
- Review
- Lipocalin 2 - mutation screen and serum levels in patients with anorexia nervosa or obesity and in lean individuals.Frontiers in endocrinology · 2023Article
- Expression of salivary immunoglobulins and their association with analgesic neuropeptide opiorphin in anorexia nervosa during adolescence.Journal of eating disorders · 2022Article
- Shedding light on biological sex differences and microbiota-gut-brain axis: a comprehensive review of its roles in neuropsychiatric disorders.Biology of sex differences · 2022Review
- From gut microbiota to host appetite: gut microbiota-derived metabolites as key regulators.Microbiome · 2021Review
- Current Aspects of the Role of Autoantibodies Directed Against Appetite-Regulating Hormones and the Gut Microbiome in Eating Disorders.Frontiers in endocrinology · 2021Review
- Altered Serum Immunological and Biochemical Parameters and Microbiota Composition in Patients With AN During Realimentation.Frontiers in nutrition · 2021Article
- Host Starvation and Female Sex Influence Enterobacterial ClpB Production: A Possible Link to the Etiology of Eating Disorders.Microorganisms · 2020Article
- Article
- The Gut Microbiome in Anorexia Nervosa: Friend or Foe?Frontiers in psychiatry · 2020Review
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Melanocortin 4 receptor (MC4R) plays a key role in regulation of appetite activated by its main ligand α-melanocyte-stimulating hormone (α-MSH) in both central and peripheral targets. α-MSH also binds to circulating immunoglobulins (Igs) but the functional significance of such immune complexes (ICs) in MC4R signaling in normal and pathological conditions of altered appetite has remained unknown. To address this question, we analyzed plasma levels, affinity kinetics, and binding epitopes of α-MSH-reactive IgG extracted from plasma samples of female patients with hyperphagic obesity, anorexia nervosa, bulimia nervosa, binge-eating disorder, and healthy controls. Ability of α-MSH/IgG IC to bind and activate human MC4R were studied in vitro and to influence feeding behavior in vivo in rodents. We found that α-MSH-reactive IgG were low in obese but increased in anorectic and bulimic patients and displayed different epitope and kinetics of IC formation. Importantly, while α-MSH/IgG IC from all subjects were binding and activating MC4R, the receptor binding affinity was decreased in obesity. Additionally, α-MSH/IgG IC had lower MC4R-mediated cAMP activation threshold as compared with α-MSH alone in all but not obese subjects. Furthermore, the cellular internalization rate of α-MSH/IgG IC by MC4R-expressing cells was decreased in obese but increased in patients with anorexia nervosa. Moreover, IgG from obese patients prevented central anorexigenic effect of α-MSH. These findings reveal that MC4R is physiologically activated by IC formed by α-MSH/IgG and that different levels and molecular properties of α-MSH-reactive IgG underlie biological activity of such IC relevant to altered appetite in obesity and eating disorders.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.