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Related Concept Videos

Nitric Oxide Signaling Pathway01:28

Nitric Oxide Signaling Pathway

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Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
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Antianginal Drugs: Nitrates and β-Blockers01:16

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In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates,  such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
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Anxiety: Overview01:18

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Anxiety is a common mental disorder featuring excessive worry, fear, and apprehension, significantly affecting daily life. People with anxiety disorders experience persistent and intense anxiety, interrupting their everyday functioning.
Individuals with anxiety often experience a range of physical and emotional symptoms, including sweating, trembling, tachycardia, and disturbances in sleep patterns. These symptoms vary in intensity and frequency but are generally disruptive and distressing.
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Anxiolytic Drugs: Overview01:26

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Anxiolytic drugs are vital in managing anxiety disorders by effectively alleviating symptoms such as excessive fear, tachycardia, and tremors. There are several classes of anxiolytic medications, each with unique mechanisms of action and potential side effects.
Primary Types of Anxiolytic Drugs
1. Benzodiazepines:
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Antihypertensive Drugs: Vasodilators01:23

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Vasodilators, primarily affecting the smooth muscles within arterial and venous walls, are commonly used for hypertension treatment. Medications such as minoxidil and hydralazine primarily target arteries and arterioles, while sodium nitroprusside acts on arterioles and venules. Minoxidil, functioning as a prodrug, is metabolized by hepatic sulfotransferase into its active form, minoxidil sulfate, after oral administration. This metabolite binds to the sulfonylurea receptor (SUR) component of...
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Angina I: Introduction01:30

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Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
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Related Experiment Video

Updated: Mar 9, 2026

Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds
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Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds

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Nitric Oxide and Anxiety.

K Gulati1, N Rai1, A Ray1

  • 1Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India.

Vitamins and Hormones
|January 8, 2017
PubMed
Summary
This summary is machine-generated.

Nitric oxide (NO) may play a role in regulating anxiety. Further research is needed to understand its potential for developing safer anxiety medications.

Keywords:
AnxietyCytoprotectionCytotoxicityNitric oxideSignal transductionStress

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Psychiatry

Background:

  • Anxiety disorders are prevalent neuropsychiatric conditions with significant physical and mental health impacts.
  • Current anxiety treatments, including benzodiazepines and buspirone, have limitations, necessitating exploration of novel therapeutic targets.
  • Nitric oxide (NO), a neuromodulator, influences various signaling pathways relevant to anxiety.

Purpose of the Study:

  • To review existing research on the role of nitrergic mechanisms in anxiety.
  • To evaluate the pharmacological and biochemical evidence linking NO to anxiety-like behavior.
  • To identify gaps and suggest future research directions in this field.

Main Methods:

  • Literature review of experimental and clinical studies on nitric oxide and anxiety.
  • Analysis of pharmacological and biochemical data related to nitrergic pathways.
  • Synthesis of current understanding of NO's involvement in anxiety regulation.

Main Results:

  • Experimental and clinical data suggest a potential involvement of NO in modulating anxiety-like behaviors.
  • The available data on nitrergic mechanisms in anxiety are currently equivocal.
  • Evidence highlights NO's capacity to interact with conventional neurotransmitter systems implicated in anxiety.

Conclusions:

  • Nitric oxide (NO) is a promising neuromodulator for anxiety research.
  • The role of NO in anxiety is complex and requires further elucidation.
  • Significant scope exists for future research to explore NO-based therapeutic strategies for anxiety disorders.