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Controlled Cortical Impact Model for Traumatic Brain Injury
Published on: August 5, 2014
Pelargonium Graveolens Essential Oil Improves Recovery after Experimental Traumatic Brain Injury
Liora Omesi1, Shlomit Lempert2,3, Chen Shemesh1
1The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Israel.
Journal of Neurotrauma
|August 4, 2026
Summary
Geranium oil (Pelargonium graveolens) shows therapeutic potential for traumatic brain injury (TBI). Oral administration of Pg oil improved cognitive function and reduced brain damage in a mouse model, suggesting a novel treatment option.
Area of Science:
- Neuroscience
- Pharmacology
- Toxicology
Background:
- Traumatic brain injury (TBI) is a major cause of disability worldwide, with limited FDA-approved treatments.
- Pelargonium graveolens (Pg) essential oil, recognized as safe, possesses anti-inflammatory and neuroprotective properties.
- Pg oil's lipophilic compounds may cross the blood-brain barrier, offering potential therapeutic benefits for TBI.
Purpose of the Study:
- To investigate the therapeutic efficacy of Pg oil in a mouse model of closed-head injury (CHI), a common form of TBI.
- To evaluate the impact of Pg oil on cognitive function, neuropathology, and underlying molecular mechanisms following TBI.
- To explore Pg oil as a potential nutraceutical or therapeutic agent for TBI management.
Main Methods:
- Male mice underwent CHI and were orally treated with Pg oil for two weeks, with treatment randomized by neurological severity score.
- Behavioral assessments (Barnes Maze, Y-maze, novel object recognition) were conducted for one month post-injury.
- Histopathological analysis examined axonal damage, neuronal survival, and brain atrophy; biochemical assays measured inflammatory markers and oxidative stress.
Main Results:
- Pg oil treatment significantly improved cognitive performance in mice with TBI, with effects lasting at least one month.
- Histopathology revealed reduced axonal damage, increased neuronal survival, and preserved brain tissue in Pg oil-treated mice.
- Therapeutic effects were linked to reduced inflammation (TNF-α, IL-1β), decreased lipid peroxidation, M2 immunomodulation, and increased pCREB levels.
Conclusions:
- Pelargonium graveolens oil demonstrates significant therapeutic potential for TBI, improving cognitive outcomes and neuroprotection.
- The anti-inflammatory and antioxidant properties of Pg oil contribute to its beneficial effects in TBI models.
- Further translational research is warranted to explore Pg oil as a novel treatment for TBI patients, particularly for cognitive recovery.
