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Related Concept Videos

Pharmacogenetics and Pharmacogenomics: Overview01:29

Pharmacogenetics and Pharmacogenomics: Overview

Pharmacogenetics and pharmacogenomics examine how genetic factors influence an individual's response to drugs. While pharmacogenetics focuses on the impact of specific genetic variants on drug effects, pharmacogenomics takes a broader approach, studying how genetic variation across populations contributes to differences in drug responses. These fields aim to explain why individuals may experience varying levels of efficacy or adverse reactions to the same medication.Variability in drug...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
Pharmacogenetics of Drug Metabolism: Overview01:27

Pharmacogenetics of Drug Metabolism: Overview

Genetic polymorphism in drug metabolism is crucial to the inter-individual variability observed in drug responses. Drug metabolism primarily involves the chemical modification of drugs and other xenobiotics to enhance their elimination by increasing their polarity. Two main classes of enzymes mediate this biotransformation process: Phase I enzymes, primarily cytochrome P450s, catalyze oxidation and reduction reactions, while other enzymes, such as esterases, mediate hydrolysis, and Phase II...
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...

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Pharmacogenetics and schizophrenia.

Adriana Foster1, Del D Miller, Peter Buckley

  • 1Department of Psychiatry and Health Behavior, Medical College of Georgia, 997 St Sebastian, Augusta, GA 30912, USA. afoster@mcg.edu

Clinics in Laboratory Medicine
|September 14, 2010
PubMed
Summary
This summary is machine-generated.

Genetic factors influence how patients respond to antipsychotic medications. Pharmacogenetics may personalize schizophrenia treatment by predicting drug efficacy and side effects for better patient outcomes.

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Area of Science:

  • Psychiatry
  • Pharmacology
  • Genetics

Background:

  • Interindividual variability in antipsychotic medication response and tolerability is significant.
  • Genetic control over these variabilities is a key hypothesis.
  • Emergent pharmacogenetic studies show promise in this area.

Purpose of the Study:

  • To explore the genetic regulation of antipsychotic medication efficacy in schizophrenia.
  • To investigate pharmacogenetic links to side-effect profiles of second-generation antipsychotics.
  • To assess the potential for personalized medicine in antipsychotic selection.

Main Methods:

  • Review of emergent pharmacogenetic studies.
  • Analysis of genetic factors influencing drug response and side effects.
  • Exploration of genotype-phenotype correlations in schizophrenia patients.

Main Results:

  • Indications suggest genetic regulation of antipsychotic efficacy across schizophrenia symptom domains.
  • Suggestive findings link pharmacogenetic factors to side effects, including weight gain, metabolic abnormalities, and tardive dyskinesia.
  • Genetic profiles may predict clinical response and side effect likelihood.

Conclusions:

  • Pharmacogenetics offers a promising approach to understanding antipsychotic variability.
  • Personalized medicine, guided by genetic profiles, could optimize antipsychotic selection for schizophrenia.
  • Future clinical practice may involve genotype-based antipsychotic choices.