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Acetylcholinesterase activity in developing rat brain during undernutrition
1Department of Paediatrics, Banaras Hindu University, Varanasi.
Insights
Low protein diets reduce acetylcholinesterase (AChE) activity in young rats, particularly during gestation and lactation. However, nutritional rehabilitation can restore normal enzyme levels, suggesting a delay rather than permanent damage.
Area of Science:
- Neuroscience
- Nutritional Science
- Biochemistry
Background:
- Acetylcholinesterase (AChE) is a critical enzyme in the nervous system.
- Nutritional status significantly impacts brain development and function.
- Prenatal and early-life nutrition are crucial for long-term health outcomes.
Purpose of the Study:
- To investigate the impact of a low protein diet on rat brain AChE activity.
- To determine the effects of undernutrition during different developmental stages (gestation, lactation, postweaning).
- To assess the reversibility of AChE changes following nutritional rehabilitation.
Main Methods:
- Rats were subjected to low protein diets during specific developmental periods.
- Acetylcholinesterase activity was measured in brain tissue.
- A rehabilitation period with a normal diet was implemented for some groups.
Main Results:
- Undernutrition during gestation and/or lactation led to decreased AChE activity, peaking at 18 days postpartum.
- Postweaning undernutrition also caused a significant reduction in AChE activity.
- A 2-week rehabilitation period restored AChE activity to control levels.
Conclusions:
- Early-life low protein diet transiently reduces rat brain AChE activity.
- The observed decrease in enzyme activity is reversible with adequate nutrition.
- AChE activity is influenced by both nutritional status and developmental age.
Abstract:
The effect of low protein diet on rat brain AChE activity has been studied during gestation, lactation and postweaning periods. There was decrease in enzyme activity of pups undernourished either during gestation and lactation or lactation alone, the decrease being maximum in 18-day-old pups. In postweaning rats, a significant decrease was observed after 2 and 4 weeks of undernutrition compared to the control. However, the effect of undernutrition was annuled by 2-week rehabilitation, thereby indicating that imposed undernutrition only delays the normal level of the enzyme. Moreover, it appears that the enzyme activity depends both on the nutritional status and the development age.