Neutrophil-Derived Opioid Peptides Reduce Pain Even Without Inflammation

Neutrophil-released opioid peptides produced pain relief in non-inflamed tissue when triggered by hypertonic stimulation, demonstrating immune-derived opioid analgesia extends beyond inflammatory contexts — broader peripheral pain control.

Rittner, H L et al.·Brain·2009·
RPEP-015402009RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Not classified
Evidence
Not graded
Sample
Not reported

What This Study Found

Neutrophil-released opioid peptides produced pain relief in non-inflamed tissue when triggered by hypertonic stimulation, demonstrating immune-derived opioid analgesia extends beyond inflammatory contexts — broader peripheral pain control.

Key Numbers

How They Did This

research study.

Why This Research Matters

Relevant for peptide research.

The Bigger Picture

Advances peptide research.

What This Study Doesn't Tell Us

See abstract.

Questions This Raises

  • ?Further research needed.

Trust & Context

Key Stat:
Key finding Neutrophil-released opioid peptides produced pain relief in non-inflamed tissue when triggered by hypertonic stimulation, demonstrating immune-derived
Evidence Grade:
emerging evidence.
Study Age:
Published in 2009.
Original Title:
Antinociception by neutrophil-derived opioid peptides in noninflamed tissue--role of hypertonicity and the perineurium.
Published In:
Brain, behavior, and immunity, 23(4), 548-57 (2009)
Database ID:
RPEP-01540

Evidence Hierarchy

Meta-Analysis / Systematic Review
Randomized Controlled Trial
Cohort / Case-Control
Cross-Sectional / ObservationalSnapshot without intervening
This study
Case Report / Animal Study
What do these levels mean? →

Frequently Asked Questions

What was studied?

Neutrophil-Derived Opioid Peptides Reduce Pain Even Without Inflammation

What was found?

Neutrophil-released opioid peptides produced pain relief in non-inflamed tissue when triggered by hypertonic stimulation, demonstrating immune-derived opioid analgesia extends beyond inflammatory contexts — broader peripheral pain control.

Read More on RethinkPeptides

Related articles coming soon.

Cite This Study

RPEP-01540·https://rethinkpeptides.com/research/RPEP-01540

APA

Rittner, H L; Hackel, D; Yamdeu, R-S; Mousa, S A; Stein, C; Schäfer, M; Brack, A. (2009). Antinociception by neutrophil-derived opioid peptides in noninflamed tissue--role of hypertonicity and the perineurium.. Brain, behavior, and immunity, 23(4), 548-57. https://doi.org/10.1016/j.bbi.2009.02.007

MLA

Rittner, H L, et al. "Antinociception by neutrophil-derived opioid peptides in noninflamed tissue--role of hypertonicity and the perineurium.." Brain, 2009. https://doi.org/10.1016/j.bbi.2009.02.007

RethinkPeptides

RethinkPeptides Research Database. "Antinociception by neutrophil-derived opioid peptides in non..." RPEP-01540. Retrieved from https://rethinkpeptides.com/research/rittner-2009-antinociception-by-neutrophilderived-opioid

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.