Unit 3110: Biochemical Pharmacology

1. Introduction to Biochemical Pharmacology

• Definition and scope of biochemical pharmacology
• Relationship between biochemistry and pharmacology
• Key concepts: molecular targets, biochemical pathways, drug-receptor interactions
• Importance of understanding drug interactions at the molecular level

2. Drug Receptors and Signal Transduction Pathways

• Types of drug receptors
  • Ion channel-linked receptors
  • G protein-coupled receptors (GPCRs)
  • Enzyme-linked receptors
  • Nuclear receptors
• Mechanisms of receptor activation and signaling
• Intracellular signal transduction pathways
  • Second messengers (cAMP, IP3, DAG, Ca2+)
  • Kinase cascades
• Modulation of cellular responses by drugs
• Receptor desensitization and downregulation

3. Enzyme Inhibition and Drug Metabolism

• Role of enzymes in drug metabolism
  • Phase I reactions (oxidation, reduction, hydrolysis)
  • Phase II reactions (conjugation)
• Types of enzyme inhibitors
  • Competitive, non-competitive, uncompetitive inhibitors
• Impact of enzyme inhibition on drug efficacy and toxicity
• Examples of clinically relevant enzyme inhibitors
• Enzyme induction and its effects

4. Pharmacokinetics and Pharmacodynamics

• Pharmacokinetics (ADME)
  • Absorption mechanisms
  • Distribution and plasma protein binding
  • Metabolism pathways and sites
  • Excretion routes
• Pharmacodynamics
  • Dose-response relationships
  • Therapeutic index and window
  • Mechanisms of drug action and effect
• Factors influencing pharmacokinetics and pharmacodynamics
• Implications for drug dosing and therapy optimization

5. Drug-Drug Interactions

• Definitions and types
  • Pharmacokinetic interactions
  • Pharmacodynamic interactions
• Mechanisms underlying interactions
  • Enzyme induction/inhibition
  • Competition for protein binding
  • Additive, synergistic, antagonistic effects
• Clinical significance and management
• Case studies illustrating drug interactions

6. Drug Design and Development

• Drug discovery process
  • Target identification and validation
  • Lead compound identification and optimization
• Preclinical testing
  • In vitro and in vivo models
  • Toxicity and efficacy studies
• Clinical trials phases I–III
• Regulatory approval process
• Post-marketing surveillance

7. Pharmacogenomics and Personalized Medicine

• Genetic variations affecting drug response
• Principles of pharmacogenomics
• Examples of pharmacogenomic markers
• Personalized medicine approaches
• Benefits and challenges of individualized therapy

8. Drug Toxicity and Adverse Drug Reactions

• Mechanisms of drug toxicity
• Types of adverse drug reactions (Type A and Type B)
• Risk factors contributing to toxicity
• Predictive methods and biomarkers
• Prevention and management strategies

9. Drug Abuse and Addiction

• Biochemical basis of drug abuse
• Drugs affecting the brain's reward system
• Mechanisms of tolerance and dependence
• Neurochemical pathways involved
• Pharmacological interventions for addiction treatment