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Treadmill exercise ameliorates nicotine withdrawal-induced symptoms
Sang-Seo Park1, Mal-Soon Shin2, Hye-Sang Park1
1Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea.
Journal of Exercise Rehabilitation
|July 19, 2019
Summary
Treadmill exercise effectively reduced anxiety, depression, and memory deficits in rats experiencing nicotine withdrawal. This physical activity also boosted key neurochemicals and cell growth in the brain.
Area of Science:
- Neuroscience
- Behavioral Science
- Exercise Physiology
Background:
- Nicotine withdrawal commonly causes psychological and cognitive impairments, including anxiety, depression, and memory deficits.
- Understanding the neurobiological underpinnings of these withdrawal symptoms is crucial for developing effective interventions.
Purpose of the Study:
- To investigate the potential of treadmill exercise to alleviate nicotine withdrawal symptoms in a rat model.
- To examine the effects of exercise on neurochemical changes and neurogenesis associated with nicotine withdrawal.
Main Methods:
- Rats were administered nicotine for 17 days, followed by a 2-week withdrawal period.
- Exercise groups engaged in daily treadmill running for 31 days.
- Behavioral tests assessed anxiety-like behavior and cognitive function (short-term memory, spatial learning).
- Neurochemical analysis measured tryptophan hydroxylase (TPH) and 5-hydroxytryptamine (5-HT) levels.
- Neurogenesis markers, including brain-derived neurotrophic factor (BDNF), tyrosine kinase B (TrkB), doublecortin (DCX), and BrdU-positive cells, were quantified.
Main Results:
- Nicotine withdrawal led to decreased activity, increased anxiety-like behavior, and impaired memory and spatial learning.
- Treadmill exercise significantly increased activity and reduced anxiety-like behavior in withdrawn rats.
- Exercise normalized decreased levels of TPH and 5-HT in the dorsal raphe nucleus.
- Treadmill running ameliorated memory and spatial learning deficits and increased BDNF and TrkB expressions.
- Exercise enhanced the proliferation of new neurons, indicated by increased DCX and BrdU-positive cells in the dentate gyrus.
Conclusions:
- Treadmill exercise serves as a potent intervention for mitigating adverse effects of nicotine withdrawal.
- Exercise positively impacts neurochemical balance, neurotrophic support, and neurogenesis during nicotine withdrawal.
- Physical activity may offer a therapeutic strategy for managing nicotine dependence and its associated cognitive and mood disturbances.
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