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Related Concept Videos

Amines: Introduction01:07

Amines: Introduction

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Amines are organic derivatives of ammonia. They are formed by replacing one or more ammonia protons with alkyl or aryl groups. Depending upon the number of organyl groups bonded to nitrogen, amines are classified as primary, secondary, or tertiary. Primary amines have one organyl group attached to the nitrogen atom, while secondary and tertiary amines have two and three organyl groups attached to the nitrogen atom, respectively.
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Effects of Chemicals: Overview01:27

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Drugs, encompassing various chemical compounds from natural sources, lab synthesis, or genetic engineering, elicit different biological responses in living organisms. Some of these responses are desirable or therapeutic, while others are undesirable. The primary goal of administering a drug is to achieve a therapeutic effect, that is, to address a specific disease or health condition. Any concurrent effects outside of this therapeutic outcome are considered undesirable. These undesirable...
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Principles of Drug Action01:24

Principles of Drug Action

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Drugs are chemical substances that modify biological responses by interacting with macromolecular targets such as receptors, ion channels, transporters, and enzymes. Pharmacodynamics describes the course of action of drugs leading to the physiological effect at a specific site in the body.
Drugs can be agonists or antagonists. Like the endogenous ligands, agonists always bind and activate the target to produce a cellular response. Agonist binding induces a conformational change which in turn...
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Physical Properties of Amines01:26

Physical Properties of Amines

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Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
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Antidotes01:17

Antidotes

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Antidotes are medicinal substances used to counteract the harmful effects of toxins or drugs in the body. They function in various ways, each uniquely designed to combat specific toxic compounds.
Specific antidotes operate by inhibiting the enzymes that control biochemical pathways, reducing the production of harmful metabolites.
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Drug Discovery: Overview01:26

Drug Discovery: Overview

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Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
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Related Experiment Video

Updated: Apr 27, 2026

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
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Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques

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Natural alkaloids: basic aspects, biological roles, and future perspectives.

Shi Qiu1, Hui Sun1, Ai-Hua Zhang1

  • 1National TCM Key Laboratory of Serum Pharmacochemistry, Heilongjiang University of Chinese Medicine, Harbin 150040, China.

Chinese Journal of Natural Medicines
|June 28, 2014
PubMed
Summary
This summary is machine-generated.

Natural alkaloids from herbs show promise for disease prevention and treatment, exhibiting anticancer and antimicrobial effects. Further research and clinical trials are needed to confirm their therapeutic potential.

Keywords:
AlkaloidsBiological rolesHealth benefitsNatural product

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Area of Science:

  • Pharmacology and Natural Product Chemistry
  • Medicinal Chemistry
  • Drug Discovery

Background:

  • Natural products, particularly alkaloids, are increasingly recognized for their health benefits and disease prevention properties.
  • Alkaloids serve as a valuable source for novel drug discovery due to their diverse biological activities.
  • Many plant-derived alkaloids demonstrate significant antiproliferative, antibacterial, antiviral, insecticidal, and antimetastatic effects against various cancers in vitro and in vivo.

Purpose of the Study:

  • To review and summarize the action mechanisms of naturally-derived alkaloids with therapeutic potential.
  • To highlight specific alkaloids like berberine, matrine, piperine, fritillarine, and rhynchophylline.
  • To assess the current promise and future directions for alkaloid-based drug development.

Main Methods:

  • Literature review and synthesis of existing research on natural alkaloids.
  • Focus on alkaloids isolated from natural herbs.
  • Summary of in vitro and in vivo studies on the effects of selected alkaloids.

Main Results:

  • Naturally-derived alkaloids exhibit a broad spectrum of biological activities relevant to disease therapy.
  • Specific alkaloids like berberine, matrine, piperine, fritillarine, and rhynchophylline show significant potential.
  • Documented evidence of antiproliferation, antibacterial, antiviral, insecticidal, and antimetastatic effects.

Conclusions:

  • Naturally-derived alkaloids represent a promising avenue for future drug development.
  • Extensive research and clinical trials are essential to validate the efficacy and safety of specific alkaloids for therapeutic use.
  • Increased awareness of natural alkaloids' potential can drive further investigation into their medicinal applications.