Appetite Hormones Create a Distinct Pattern in Prader-Willi Syndrome
Patients with Prader-Willi syndrome show a distinctive hormonal fingerprint with elevated fasting levels of ghrelin, leptin, PYY, GIP, and GLP-1, distinguishing them from obese and healthy controls.
Quick Facts
What This Study Found
Cluster analysis separated PWS patients (23/27) into a distinct group with paradoxically elevated levels of both hunger (ghrelin) and satiety (leptin, PYY, GIP, GLP-1) hormones, suggesting hormonal dysfunction rather than simple imbalance.
Key Numbers
30 per group; 9 hormones; 4 time points; 23/27 PWS in Cluster 2; elevated ghrelin, leptin, PYY, GIP, GLP-1; PP declined post-60 min
How They Did This
Prospective study comparing 30 PWS adults, 30 obese controls, and 30 healthy controls. Nine appetite-related peptides/hormones measured at fasting and 30, 60, and 120 minutes after a hypercaloric liquid diet. Cluster analysis applied.
Why This Research Matters
Understanding the specific hormonal dysfunction in PWS could lead to targeted therapies for the uncontrollable hunger that is the hallmark of this genetic condition, which currently has no effective pharmacological treatment.
The Bigger Picture
Prader-Willi syndrome causes extreme, uncontrollable hunger leading to severe obesity if left unmanaged. This study reveals that the problem isn't simply too much ghrelin — it's a comprehensive dysfunction affecting multiple appetite hormones simultaneously, which may explain why single-target therapies have been unsuccessful.
What This Study Doesn't Tell Us
Moderate sample size (n=30 per group). Only 27 of 30 PWS patients had complete data for cluster analysis. Cross-sectional design cannot establish causation. Single meal challenge may not capture full hormonal dynamics.
Questions This Raises
- ?Could therapies targeting multiple appetite hormones simultaneously be more effective for PWS?
- ?Why are satiety hormones elevated in PWS patients despite persistent hunger — is there receptor-level resistance?
- ?What drives the abnormal pancreatic polypeptide response, and could it be a therapeutic target?
Trust & Context
- Key Stat:
- 23 of 27 PWS patients in a distinct cluster Showing hyperghrelinemia alongside elevated satiety hormones — a paradoxical pattern not seen in obesity alone
- Evidence Grade:
- Well-designed prospective study with appropriate controls and standardized meal challenge. Moderate sample size provides meaningful but not definitive evidence.
- Study Age:
- Published in 2021, contributing to evolving understanding of hormonal dysregulation in Prader-Willi syndrome.
- Original Title:
- Hunger and Satiety Peptides: Is There a Pattern to Classify Patients with Prader-Willi Syndrome?
- Published In:
- Journal of clinical medicine, 10(21) (2021)
- Authors:
- Bueno, Marta, Boixadera-Planas, Ester, Blanco-Hinojo, Laura, Esteba-Castillo, Susanna, Giménez-Palop, Olga, Torrents-Rodas, David, Pujol, Jesús, Corripio, Raquel, Deus, Joan, Caixàs, Assumpta
- Database ID:
- RPEP-05294
Evidence Hierarchy
Watches what happens naturally without intervening.
What do these levels mean? →Frequently Asked Questions
Why are people with Prader-Willi syndrome always hungry?
This study shows it's not simply about having too much of the hunger hormone ghrelin. PWS patients have a complex dysfunction where both hunger and fullness hormones are abnormally elevated, suggesting the brain's ability to process appetite signals is fundamentally disrupted.
Could hormone therapy help control hunger in Prader-Willi syndrome?
The finding that multiple hormones are dysfunctional simultaneously suggests that targeting just one hormone may not be enough. Future therapies may need to address the broader signaling dysfunction, perhaps targeting hormone receptors or downstream pathways rather than hormone levels themselves.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-05294APA
Bueno, Marta; Boixadera-Planas, Ester; Blanco-Hinojo, Laura; Esteba-Castillo, Susanna; Giménez-Palop, Olga; Torrents-Rodas, David; Pujol, Jesús; Corripio, Raquel; Deus, Joan; Caixàs, Assumpta. (2021). Hunger and Satiety Peptides: Is There a Pattern to Classify Patients with Prader-Willi Syndrome?. Journal of clinical medicine, 10(21). https://doi.org/10.3390/jcm10215170
MLA
Bueno, Marta, et al. "Hunger and Satiety Peptides: Is There a Pattern to Classify Patients with Prader-Willi Syndrome?." Journal of clinical medicine, 2021. https://doi.org/10.3390/jcm10215170
RethinkPeptides
RethinkPeptides Research Database. "Hunger and Satiety Peptides: Is There a Pattern to Classify ..." RPEP-05294. Retrieved from https://rethinkpeptides.com/research/bueno-2021-hunger-and-satiety-peptides
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.