Adrenomedullin Peptide Levels Surge During Sepsis and Track Disease Severity
Plasma adrenomedullin levels were extremely elevated in sepsis patients admitted to ICU and correlated with disease severity, suggesting its role in sepsis-related blood pressure drops.
Quick Facts
What This Study Found
Plasma adrenomedullin concentrations were extremely elevated in septic ICU patients compared to healthy controls, correlating with disease severity.
Key Numbers
How They Did This
Cross-sectional study measuring plasma immunoreactive adrenomedullin levels in 12 septic patients upon ICU admission, compared to healthy controls.
Why This Research Matters
Understanding which peptides drive the fatal blood pressure collapse in sepsis could lead to targeted treatments. Adrenomedullin's vasodilatory properties make it a key suspect in sepsis pathophysiology.
The Bigger Picture
Adrenomedullin has since become recognized as both a biomarker and potential therapeutic target in sepsis, with ongoing clinical trials of adrenomedullin-binding antibodies for septic shock treatment.
What This Study Doesn't Tell Us
Small sample (12 patients). Cross-sectional design cannot determine whether adrenomedullin elevation is a cause or consequence of sepsis. Correlation with severity doesn't prove causation.
Questions This Raises
- ?Is adrenomedullin a driver of septic vasodilation or a compensatory protective response?
- ?Could adrenomedullin levels predict sepsis outcomes and guide treatment?
Trust & Context
- Key Stat:
- Extremely elevated in sepsis Plasma adrenomedullin levels in septic ICU patients were dramatically higher than in healthy individuals
- Evidence Grade:
- Preliminary human evidence from a small ICU cohort. Demonstrates the association but cannot establish causation between adrenomedullin and sepsis outcomes.
- Study Age:
- Published in 1996, this was an early study establishing adrenomedullin's role in sepsis. It has since been validated by larger studies and clinical trials.
- Original Title:
- Increased circulating adrenomedullin, a novel vasodilatory peptide, in sepsis.
- Published In:
- The Journal of clinical endocrinology and metabolism, 81(4), 1449-53 (1996)
- Database ID:
- RPEP-00364
Evidence Hierarchy
A snapshot of a population at one point in time.
What do these levels mean? →Frequently Asked Questions
What is adrenomedullin?
Adrenomedullin is a peptide hormone that powerfully dilates blood vessels (vasodilation). It's produced throughout the body and helps regulate blood pressure. In sepsis, massive overproduction may contribute to the dangerous blood pressure drops that can lead to organ failure.
Why does sepsis cause blood pressure to drop?
In sepsis, the immune response triggers release of vasodilatory molecules like adrenomedullin and nitric oxide that cause blood vessels to relax and widen. This leads to a dramatic drop in blood pressure (septic shock) that can be fatal if not treated.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-00364APA
Hirata, Y; Mitaka, C; Sato, K; Nagura, T; Tsunoda, Y; Amaha, K; Marumo, F. (1996). Increased circulating adrenomedullin, a novel vasodilatory peptide, in sepsis.. The Journal of clinical endocrinology and metabolism, 81(4), 1449-53.
MLA
Hirata, Y, et al. "Increased circulating adrenomedullin, a novel vasodilatory peptide, in sepsis.." The Journal of clinical endocrinology and metabolism, 1996.
RethinkPeptides
RethinkPeptides Research Database. "Increased circulating adrenomedullin, a novel vasodilatory p..." RPEP-00364. Retrieved from https://rethinkpeptides.com/research/hirata-1996-increased-circulating-adrenomedullin-a
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.