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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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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Drug development from natural resource: a systematic approach.

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  • 1Department of Biochemistry, University College of Medical Sciences, Dilshad Garden, Delhi-110095 (University of Delhi), India. drsbs08@hotmail.com.

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Medicinal plants offer promising therapeutic leads for chronic diseases like cancer and diabetes. However, challenges in scaling up and commercializing compounds limit drug development from these natural resources.

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Area of Science:

  • Pharmacology
  • Natural Product Chemistry
  • Drug Discovery

Background:

  • Natural sources are crucial for identifying novel therapeutic leads against chronic diseases such as diabetes, cardiovascular disease (CVD), and cancer.
  • There is a global demand for safe and effective drugs, driving renewed interest in medicinal plants as a source of therapeutics.
  • Despite their potential, significant challenges exist in translating natural product leads into viable drugs.

Purpose of the Study:

  • To provide an overview of the methodologies employed in natural product research for drug discovery.
  • To highlight the process from crude plant extract to the identification of bioactive pharmacological leads.
  • To discuss the limitations associated with evaluating the bioactivity of medicinal plants.

Main Methods:

  • Multidimensional approach integrating botanical, phytochemical, and biochemical techniques.
  • Combinatorial chemistry strategies.
  • Bioassay-guided fractionation for isolating active compounds.

Main Results:

  • Natural products serve as vital sources for pharmacological leads against prevalent and severe diseases.
  • A systematic scientific approach is essential for successful drug development from natural resources.
  • Only a small fraction of potential lead molecules from natural sources are successfully developed into drugs.

Conclusions:

  • Medicinal plants represent a valuable resource for drug discovery, offering potential treatments for various diseases.
  • Overcoming challenges in scale-up and commercialization is critical for realizing the full therapeutic potential of natural products.
  • Further research and systematic approaches are needed to address the limitations in medicinal plant bioactivity studies.