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Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating...
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Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
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Related Experiment Video

Updated: Oct 3, 2025

Spectral Confocal Imaging of Fluorescently tagged Nicotinic Receptors in Knock-in Mice with Chronic Nicotine Administration
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Nicotine and the developing brain: Insights from preclinical models.

Deirdre M McCarthy1, Lin Zhang1, Bradley J Wilkes2

  • 1Biomedical Sciences, Florida State University, College of Medicine, Tallahassee, FL 32306, United States of America.

Pharmacology, Biochemistry, and Behavior
|February 17, 2022
PubMed
Summary

Prenatal nicotine exposure in animal models impacts offspring neurodevelopment and behavior across generations. This research explores lasting effects and potential treatments for attention deficit hyperactivity disorder.

Keywords:
AttentionKappa opioid receptorMemoryMouseNicotineTransgenerational transmissionTraumatic brain injury

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pharmacology

Background:

  • Prenatal exposure to tobacco products, specifically nicotine, is linked to neurodevelopmental disorders in offspring.
  • Preclinical models are crucial for understanding nicotine's long-term effects on brain development, neurotransmission, and behavior.
  • These models have identified potential therapeutic compounds for attention deficit hyperactivity disorder (ADHD).

Purpose of the Study:

  • To investigate the neurobiological mechanisms underlying the effects of developmental nicotine exposure.
  • To examine the transgenerational inheritance of behavioral phenotypes.
  • To explore the interaction between developmental nicotine exposure and traumatic brain injury.

Main Methods:

  • Utilizing preclinical models of developmental nicotine exposure.
  • Assessing changes in brain structure, neurotransmitter signaling, and behavior.
  • Investigating the heritability of behavioral traits across multiple generations.
  • Examining the combined effects of nicotine exposure and mild traumatic brain injury.

Main Results:

  • Developmental nicotine exposure causes lasting alterations in brain structure, neurotransmitter systems, and behavior.
  • Behavioral phenotypes associated with nicotine exposure are heritable across generations.
  • Synergistic negative outcomes occur when developmental nicotine exposure is combined with repetitive mild traumatic brain injury, particularly in individuals with ADHD.

Conclusions:

  • Preclinical models provide critical insights into the neurodevelopmental consequences of prenatal nicotine exposure.
  • Nicotine's effects on brain development and behavior can be transmitted across generations.
  • Combined prenatal nicotine exposure and TBI exacerbate neurodevelopmental deficits, highlighting the need for targeted interventions.