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Specimen Atlas of Research Peptides81 plates · MIT
Side-by-side · Research reference

BronchogenvsHGH Fragment 176-191

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AAnimal-StrongHUMAN-REVIEWED16/35 cited
BAnimal-StrongHUMAN-REVIEWED28/59 cited
Bronchogen
Tetrapeptide Bioregulator · Khavinson-School
0.05 ng/mLEffective concentrationZakutskiĭ 2006
60 daysCOPD model durationTitova 2017
30 daysTreatment courseKuzubova 2015
Research models: tissue culture / parenteral
HGH Fragment 176-191
GH Fragment · Pre-Clinical
50%Weight gain reductionNg 2000
~26 minHalf-life (est.)
No IGF-1 ↑GH axis impact
SQ · IP (animal) · Oral (tested)

01Mechanism of Action

Parameter
Bronchogen
HGH Fragment 176-191
Primary target
Bronchial epithelial cellsKuzubova 2015
Beta-3 adrenergic receptors on adipocytesHeffernan 2001
Pathway
Tissue-specific bioregulation → epithelial cell differentiation → ciliated cell restoration
Fragment → β3-AR upregulation → Enhanced lipolytic sensitivityHeffernan 2001
Downstream effect
Reversal of goblet cell hyperplasia, squamous metaplasia elimination, restoration of ciliated epithelium, normalized secretory IgA and surfactant protein B productionKuzubova 2015Titova 2017
Increased lipolysis and beta-3 AR mRNA expression without IGF-1 axis activation
Feedback intact?
N/A — does not interact with GH/IGF-1 axis
Origin
Synthetic tetrapeptide (Ala-Glu-Asp-Leu) from Khavinson bioregulator framework
Synthetic peptide derived from hGH residues 176-191; AOD9604 includes N-terminal tyrosine (177-191)Cox 2015
Antibody development
Not reported in available studies

02Dosage Protocols

Parameter
Bronchogen
HGH Fragment 176-191
Effective concentration (culture)
0.05 ng/mLZakutskiĭ 2006
Demonstrated in organotypic tissue culture of bronchial explants.
Treatment duration (animal)
1 month (30 days)Kuzubova 2015Titova 2017
Course duration in rat COPD models.
Evidence basis
Animal models (rat) / organotypic cultureTitova 2017Kuzubova 2015Zakutskiĭ 2006
No human clinical trials reported in available literature.
Animal studies only
Model system
NO₂-induced COPD (60-day intermittent exposure)Titova 2017
Tissue specificity
Selective for bronchopulmonary tissue
Part of Khavinson organ-specific bioregulator series.
Animal dose (oral)
500 mcg/kg body weightNg 2000
Obese Zucker rats, 19 days.
Animal dose (IP)
Not specified (14-day chronic administration)Heffernan 2001
Obese mice, daily IP injection.
Human equivalent dose
Not established — no published human RCTs
Frequency
Once daily (animal models)
Duration tested
Detection window
50 pg/mL LOD in urine; stable metabolite extends detectionCox 2015
WADA-banned; anti-doping testing available.
Oral bioavailability
Demonstrated efficacy in animal oral administrationNg 2000
Potential for oral therapeutic development.

03Metabolic / Fat Loss Evidence

Parameter
Bronchogen
HGH Fragment 176-191
Primary fat target
Adipose tissue (general) — beta-3 AR mediated lipolysisHeffernan 2001
Weight gain reduction
50% reduction vs control (15.8 ± 0.6 g vs 35.6 ± 0.8 g)Ng 2000
Obese Zucker rats, 19 days oral administration.
Body fat reduction
Significant decrease in body weight and body fat in obese mice (14 days)Heffernan 2001
Lipolytic activity
Increased adipose tissue lipolytic activityNg 2000
Direct measurement in treated animals.
Beta-3 AR expression
Upregulated β3-AR mRNA in obese mice to lean-comparable levelsHeffernan 2001
Insulin sensitivity
No adverse effect — euglycemic clamp confirmedNg 2000
Contrasts with intact hGH diabetogenic effects.
IGF-1 impact
No elevation — fragment does not activate GH/IGF-1 axis
Beta-3 AR dependency
Effect abolished in β3-AR knockout miceHeffernan 2001
Confirms β3-AR as primary mechanism.
Route of administration
Efficacy demonstrated via oral and IP routesNg 2000Heffernan 2001
Human evidence
None published — pre-clinical only

04Side Effects & Safety

Parameter
Bronchogen
HGH Fragment 176-191
Animal safety profile
No adverse effects reported in published rat studies
Limited safety data; only animal models available.
Human data
Absent — no clinical trials in humans reported
Long-term effects
Unknown — maximum study duration 30 days in animals
Insulin sensitivity
No adverse effects observed in euglycemic clamp (animal)Ng 2000
GH/IGF-1 axis
No activation — avoids diabetogenic effects of full GHNg 2000
Human safety data
Not available — no published human trials
WADA status
Banned as performance-enhancing drugCox 2015
Metabolic profile
Six metabolites identified; CRSVEGSCG most stableCox 2015
Detection window implications for doping control.
Absolute Contraindications
Bronchogen
HGH Fragment 176-191
  • ·Competitive athletes (WADA-banned)Cox 2015
Relative Contraindications
Bronchogen
HGH Fragment 176-191
  • ·Absence of human safety data — experimental use only

05Administration Protocol

Parameter
Bronchogen
HGH Fragment 176-191
1. Research context only
Bronchogen has been studied exclusively in animal models and organotypic tissue culture. No approved formulation or human administration protocol exists.
Subcutaneous injection primary route in research context. Oral administration demonstrated efficacy in animal models at 500 mcg/kg.
2. Animal model protocol
In rat COPD models, tetrapeptide administered for 30-day course following 60-day NO₂ exposure. Route and exact dosing not specified in abstracts.Titova 2017Kuzubova 2015
Once daily dosing used in animal studies. Timing not specified; GH-independent mechanism suggests flexibility.
3. Organotypic culture
Bronchial tissue explants from young (3-week) and aged (18-month) rats cultured in medium containing 0.05 ng/mL bronchogen, demonstrating tissue-specific stimulation.Zakutskiĭ 2006
Animal protocols: 14–19 days. Human duration not established — no published trials.
4. Khavinson bioregulator tradition
Part of Russian peptide bioregulator framework emphasizing tissue-specific low-dose effects. Typically administered parenterally in related peptides from this series.
Lyophilized peptide storage per standard peptide protocols. Metabolite stability suggests refrigerated reconstituted solution viable.
5. Detection
Detectable in urine via SPE-LC-MS at 50 pg/mL LOD. Extended detection window via stable metabolite CRSVEGSCG.Cox 2015