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Related Concept Videos

Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers01:24

Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers

Adrenergic stimulation generally impacts cardiac rate and rhythm. Specifically, stimulation of the β-adrenoceptors triggers an increase in intracellular calcium ion influx and pacemaker currents, which may cause arrhythmias. Catecholamines like adrenaline also demonstrate β2-adrenoceptor-mediated hypokalemia, impacting cardiac action potential and disrupting the normal cardiac rhythm. Class II antiarrhythmic drugs are β-adrenoceptor antagonists or β-blockers, which indirectly block calcium...
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers01:22

Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers

Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

Sedatives and Hypnotics Drugs: Miscellaneous Agents

Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers01:20

Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers

Class IV antiarrhythmic drugs, such as verapamil and diltiazem, block calcium channels. They primarily affect the heart, slowing the conduction in calcium-dependent tissues like the SA and AV nodes. These drugs manage reentrant supraventricular tachycardia (SVT) and reduce ventricular rate in atrial flutter/fibrillation.
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
Oral Drug Delivery Systems: Continuous-Release Systems01:26

Oral Drug Delivery Systems: Continuous-Release Systems

Continuous-release drug delivery systems offer a strategic approach to maintaining therapeutic drug levels over extended periods following oral administration. By modulating the release rate of active pharmaceutical ingredients, these systems minimize fluctuations in plasma concentrations, which enhances clinical efficacy and reduces the need for frequent dosing. Such characteristics make them particularly advantageous in managing chronic diseases where patient adherence and stable drug...
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

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. Administered...

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Related Experiment Video

Updated: Jun 7, 2026

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
04:29

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression

Published on: January 7, 2019

[Nimesulide: 25 years later].

C Mattia1, S Ciarcia, A Muhindo

  • 1Dipartimento Scienze Anestesiologiche, Polo Pontino Sapienza Università di Roma, Italia. consalvo.mattia@uniroma1.it

Minerva Medica
|October 30, 2010
PubMed
Summary
This summary is machine-generated.

Nimesulide, an arylsulfonamide NSAID, offers rapid pain relief with a preferential COX-2 effect. It shows a lower risk of gastrointestinal bleeding compared to other NSAIDs.

Related Experiment Videos

Last Updated: Jun 7, 2026

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
04:29

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression

Published on: January 7, 2019

Area of Science:

  • Pharmacology
  • Medicinal Chemistry

Context:

  • Nimesulide, approved in 1985, is unique among NSAIDs as an arylsulfonamide.
  • It exhibits preferential cyclooxygenase-2 (COX-2) inhibition with balanced COX-1 activity.

Purpose:

  • To evaluate the distinct characteristics of nimesulide compared to other nonsteroidal anti-inflammatory drugs (NSAIDs) after 25 years on the market.
  • To analyze its pharmacokinetic profile, efficacy in pain management, and safety, particularly gastrointestinal and hepatic risks.

Summary:

  • Nimesulide demonstrates rapid and complete gastrointestinal absorption, leading to a swift onset of action.
  • It distributes effectively into synovial fluid, prolonging its presence for sustained pain control.
  • Its preferential COX-2 activity is associated with a reduced risk of upper gastrointestinal bleeding.

Impact:

  • Nimesulide's safety profile regarding severe hepatic reactions is considered comparable to other NSAIDs by European regulatory authorities.
  • It serves as an alternative pain management therapy when paracetamol is insufficient or for inflammatory pain.
  • This evaluation reinforces nimesulide's position as a valuable NSAID option.