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Related Concept Videos

Drugs Acting on Autonomic Ganglia: Stimulants01:23

Drugs Acting on Autonomic Ganglia: Stimulants


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 sympathetic or...
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Stimulants

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.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Statistical Methods for Analyzing Epidemiological Data01:25

Statistical Methods for Analyzing Epidemiological Data

Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Related Experiment Video

Updated: May 12, 2026

Using Nicotine in a Silica-Exposed Mouse Model to Promote Lung Epithelial-Mesenchymal Transition
06:12

Using Nicotine in a Silica-Exposed Mouse Model to Promote Lung Epithelial-Mesenchymal Transition

Published on: March 3, 2023

Nicotine and lung cancer.

Graham W Warren1, Anurag K Singh

  • 1Department of Radiation Oncology, Medical University of South Carolina, Charleston, SC, USA and Roswell Park Cancer Institute, Buffalo, NY, USA ; Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, USA and Roswell Park Cancer Institute, Buffalo, NY, USA.

Journal of Carcinogenesis
|April 20, 2013
PubMed
Summary

Nicotine, a key component of tobacco, fuels cancer growth and hinders treatment effectiveness. Understanding nicotine

Keywords:
Cancerlungnicotinesmokingtobacco

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Area of Science:

  • Oncology
  • Cancer Biology
  • Pharmacology

Background:

  • Tobacco use in cancer patients correlates with treatment failure and reduced survival.
  • Nicotine is the primary addictive compound in tobacco smoke, implicated in addiction.
  • Tobacco smoke contains over 7,000 chemical compounds, with nicotine being a key focus.

Purpose of the Study:

  • To review the tumor-promoting activities of nicotine.
  • To elucidate the mechanisms by which nicotine influences cancer progression.
  • To examine nicotine's impact on the efficacy of cancer therapies.

Main Methods:

  • Literature review of studies on nicotine's effects on tumor growth and treatment response.
  • Analysis of research investigating nicotine's interaction with cellular pathways.
  • Examination of data linking nicotine to cancer development and therapeutic resistance.

Main Results:

  • Nicotine and its metabolites promote tumor growth via increased proliferation, angiogenesis, migration, invasion, and epithelial to mesenchymal transition.
  • Nicotine stimulates autocrine loops that contribute to tumor growth.
  • Nicotine diminishes the effectiveness of chemotherapy and radiotherapy.

Conclusions:

  • Nicotine activates nicotinic acetylcholine and beta-adrenergic receptors, driving tumor progression and treatment resistance.
  • Nicotine is a significant factor in tobacco-induced tumor development, progression, and resistance to cancer treatment.
  • Targeting nicotine-related pathways may offer novel strategies for cancer therapy.