BPC 157 Protects Against Organ Damage After Major Bowel Surgery in Rats

The peptide BPC 157 completely reversed gastrointestinal, liver, and brain damage caused by major bowel surgery and diclofenac toxicity in rats, even when nitric oxide signaling was blocked.

Lojo, Nermin et al.·PloS one·2016·
RPEP-030252016RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Not classified
Evidence
Not graded
Sample
Not reported

What This Study Found

BPC 157 completely ameliorated symptoms in short-bowel rats across all experimental conditions: surgery alone, surgery plus diclofenac, and surgery plus diclofenac plus the NOS blocker L-NAME. This included protection of anastomosis healing, restoration of intestinal adaptation, and reduction of gastrointestinal, liver, and brain lesions.

The damage cascade was dose-dependent: surgery alone caused mild stomach/duodenum lesions with severe brain lesions; adding diclofenac (12 mg/kg) caused widespread severe lesions across all organs; adding L-NAME on top made everything worse with macro/microscopic necrosis. BPC 157 at both 10 μg/kg and 10 ng/kg reversed all of these. L-arginine only helped reverse L-NAME-specific aggravation.

Key Numbers

How They Did This

Wistar rats underwent massive small bowel resection with anastomosis creation. Immediately after surgery, rats were given intraperitoneal injections of diclofenac (12 mg/kg), BPC 157 (10 μg/kg or 10 ng/kg), L-NAME (5 mg/kg), L-arginine (100 mg/kg), alone or in combinations. Animals were assessed 24 hours later for anastomosis healing quality, intestinal adaptation, and macro/microscopic lesions in the gastrointestinal tract, liver, and brain (cerebrum, hippocampus, cerebellum).

Why This Research Matters

Major bowel surgery carries significant risks of complications including anastomosis failure, organ damage, and impaired intestinal adaptation. NSAIDs like diclofenac, commonly used for post-surgical pain, can worsen these outcomes. BPC 157’s ability to protect multiple organ systems simultaneously — gut, liver, and brain — through what appears to involve the COX-NO system suggests it could be a valuable therapeutic agent for post-surgical recovery, particularly in situations where NSAID use is necessary.

The Bigger Picture

This study is part of an extensive body of BPC 157 research from the Sikiric lab group, which has published numerous studies on this gastric pentadecapeptide’s wound-healing and protective properties. The finding that BPC 157 works across multiple organ systems and overcomes COX-NO system inhibition adds to the evidence for its broad cytoprotective mechanism. However, BPC 157 research remains predominantly preclinical, and human clinical trials are still limited.

What This Study Doesn't Tell Us

This is an animal study with only a 24-hour follow-up period, which cannot predict long-term outcomes or human responses. The sample size per group is not specified in the abstract. The research comes from a single lab group (Sikiric et al.) that produces the majority of BPC 157 research, limiting independent replication. The mechanisms by which BPC 157 achieves such broad protective effects remain incompletely understood. No human surgical studies with BPC 157 exist.

Questions This Raises

  • ?Through what specific molecular mechanisms does BPC 157 provide simultaneous protection to the gut, liver, and brain after surgical trauma?
  • ?Would BPC 157’s protective effects persist beyond the 24-hour window and improve long-term surgical outcomes?
  • ?Can these dramatic preclinical results be translated to human post-surgical care, and if so, what would be the optimal dosing and timing?

Trust & Context

Key Stat:
Complete amelioration across all conditions BPC 157 fully reversed gastrointestinal, liver, and brain lesions caused by bowel surgery, diclofenac, and nitric oxide blockade — even at the nanogram dose level
Evidence Grade:
This is a preclinical animal study in rats with a short 24-hour follow-up. While it demonstrates strong effects, the results are limited by the animal model, single research group, and lack of human data. The broad claims of complete amelioration across multiple organ systems require independent replication.
Study Age:
Published in 2016, this study is moderately dated but remains relevant as BPC 157 research continues to expand. The findings are consistent with the broader BPC 157 literature and have informed subsequent studies on the peptide’s mechanisms.
Original Title:
Effects of Diclofenac, L-NAME, L-Arginine, and Pentadecapeptide BPC 157 on Gastrointestinal, Liver, and Brain Lesions, Failed Anastomosis, and Intestinal Adaptation Deterioration in 24 Hour-Short-Bowel Rats.
Published In:
PloS one, 11(9), e0162590 (2016)
Database ID:
RPEP-03025

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 is BPC 157?

BPC 157 (Body Protection Compound-157) is a synthetic peptide derived from a protein found in human gastric juice. It has been extensively studied in animal models for its wound-healing, anti-inflammatory, and organ-protective properties, though human clinical data remains limited.

Why did the researchers test BPC 157 together with diclofenac?

Diclofenac is a common anti-inflammatory painkiller (NSAID) often used after surgery, but it can cause serious gastrointestinal damage and impair healing. The researchers wanted to see if BPC 157 could protect against both the surgical damage and the additional harm caused by diclofenac — a clinically relevant combination since patients often receive NSAIDs post-surgery.

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Cite This Study

RPEP-03025·https://rethinkpeptides.com/research/RPEP-03025

APA

Lojo, Nermin; Rasic, Zarko; Zenko Sever, Anita; Kolenc, Danijela; Vukusic, Darko; Drmic, Domagoj; Zoricic, Ivan; Sever, Marko; Seiwerth, Sven; Sikiric, Predrag. (2016). Effects of Diclofenac, L-NAME, L-Arginine, and Pentadecapeptide BPC 157 on Gastrointestinal, Liver, and Brain Lesions, Failed Anastomosis, and Intestinal Adaptation Deterioration in 24 Hour-Short-Bowel Rats.. PloS one, 11(9), e0162590. https://doi.org/10.1371/journal.pone.0162590

MLA

Lojo, Nermin, et al. "Effects of Diclofenac, L-NAME, L-Arginine, and Pentadecapeptide BPC 157 on Gastrointestinal, Liver, and Brain Lesions, Failed Anastomosis, and Intestinal Adaptation Deterioration in 24 Hour-Short-Bowel Rats.." PloS one, 2016. https://doi.org/10.1371/journal.pone.0162590

RethinkPeptides

RethinkPeptides Research Database. "Effects of Diclofenac, L-NAME, L-Arginine, and Pentadecapept..." RPEP-03025. Retrieved from https://rethinkpeptides.com/research/lojo-2016-effects-of-diclofenac-lname

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.