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Exploring Pharmacology: Understanding Drug Interactions in Living Systems

Discover the fundamentals of pharmacology, focusing on drug composition, absorption, distribution, metabolism, and excretion. Learn about the basic principles and pharmacological devices used in research, with insights into future exploration and references for further reading.

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Exploring Pharmacology: Understanding Drug Interactions in Living Systems

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  1. Pharmacology By: Kunwal Nasrullah and Badrul Islam Dr. Mark G. Klang Memorial Sloan Kettering Cancer Center; Harlem Children’s Center

  2. What is Pharmacology? • Pharmacology is the study of how chemical substances interact with living systems. • This field includes: • Drug composition, interactions, toxicology, and therapy

  3. Pharmacology (Contd.) • Pharmacologists study four aspects of drugs: • Absorption-How is the medicine absorbed? • Distribution- How is the medicine spread throughout the body? • Metabolism-Is the medicine converted into other chemicals in the body? • Excretion-How is the medicine eliminated from the body?

  4. Basic Principles of Pharmacology • Absorption (Pharmaceutical Phase)- • Through the skin, intestinal tract, intravenously, mouth, or inhalation (nasal mucosa) • Organ systems involved: • Circulatory • Respiratory • Excretory • Digestive

  5. Basic Principles of Pharmacology (Contd.) • Distribution • Dependent upon tissue permeability, blood flow, perfusion rate of the tissue, drug binding of plasma proteins and tissues.

  6. Basic Principles (Contd.) • Metabolism • Chemical conversion of medication inside the body into substances. • Things that pharmacologists consider: • The activity of by-products. (Toxicity) • Almost all drugs are xenobiotics.

  7. Basic Principles (Contd.) • Excretion Elimination of medicine (through urine, bile, breath, skin).

  8. Pharmacological Devices • HPLC (High Performance Liquid Chromatography) • pH meter • UV Spectrofometer • Refractometer

  9. Future Research • Examination of drugs in health foods (protein shakes, vitamins, etc.). • Testing compatibility and stability of generic drugs aimed at treating cancer and its side affects with Dr. Klang.

  10. References • http://xnet.rrc.mb.ca/davidb/pharmacology.htm • http://en.wikipedia.org/wiki/Pharmacology • http://www.thebody.com/tpan/winter05/images/abcs_figure1.jpghttp://www.thebody.com/tpan/winter05/images/abcs_figure1.jpg • http://web.vet.cornell.edu/public/pharmacokinetics/excretion/enterohepatic.gif

  11. Acknowledgments • Dr. Mark G. Klang • Harlem Children Society and Dr. Sat Bhattcharya • Sloan Kettering Cancer Center

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