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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...
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...
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...
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...
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...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...

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Related Experiment Video

Updated: May 29, 2026

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
13:47

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis

Published on: June 3, 2018

Pharmacogenomics in ophthalmology.

Barkur S Shastry1

  • 1Department of Biological Sciences, Oakland University, Rochester, MI 48309, USA. shastry@oakland.edu

Discovery Medicine
|September 1, 2011
PubMed
Summary

Genetic diversity influences drug response in eye diseases like age-related macular degeneration (AMD) and glaucoma. While pharmacogenetics shows promise, clinical integration faces challenges, requiring further research and education.

Area of Science:

  • Ophthalmology
  • Pharmacogenetics
  • Genetics

Background:

  • Inter-individual variability in drug response and adverse drug reactions (ADRs) are recognized in medicine.
  • Genetic diversity is a significant factor contributing to these variations in drug response.
  • While extensively studied in cancer and heart disease, pharmacogenetic research in ophthalmology is nascent.

Purpose of the Study:

  • To summarize recent small-scale pharmacogenetic studies in ophthalmology.
  • To highlight the potential of genetic variants in understanding drug response for eye disorders.
  • To discuss challenges hindering clinical integration of pharmacogenetics in ophthalmology.

Main Methods:

  • Review of recent small-scale pharmacogenetic studies.
  • Focus on age-related macular degeneration (AMD) and glaucoma.

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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

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Related Experiment Videos

Last Updated: May 29, 2026

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis
13:47

Laser Capture Microdissection of Highly Pure Trabecular Meshwork from Mouse Eyes for Gene Expression Analysis

Published on: June 3, 2018

Use of Rabbit Eyes in Pharmacokinetic Studies of Intraocular Drugs
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Use of Rabbit Eyes in Pharmacokinetic Studies of Intraocular Drugs

Published on: July 23, 2016

A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

Published on: July 14, 2016

  • Identification of genetic associations with drug response and eye disorders.
  • Main Results:

    • Small-scale studies suggest associations between genotypes/haplotypes and drug response in ophthalmology.
    • Advancements in technology aid in identifying genes linked to eye disorders.
    • Pharmacogenetic studies in ophthalmology are in early stages.

    Conclusions:

    • Pharmacogenetics holds future potential for drug development in ophthalmology.
    • Clinical integration is currently limited by complex genetic factors, unknown variant functions, and ethical/social considerations.
    • Further research and education are crucial for advancing pharmacogenetics in eye care.