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Related Concept Videos

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 Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase01:11

Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
Translation01:31

Translation

Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation01:31

Translation

Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase01:27

Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase

Phase II biotransformation reactions are essential for detoxifying and eliminating xenobiotics, including many pharmaceutical compounds. These reactions typically involve conjugation, the covalent attachment of polar endogenous groups such as glucuronic acid, sulfate, methyl, or acetyl moieties to functional groups introduced during Phase I metabolism. The resulting conjugates are more water-soluble, enabling efficient renal or biliary excretion.The major classes of Phase II enzymes include...
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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High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment
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TLR4 polymorphisms and disease susceptibility.

Mamoona Noreen1, Muhammad Ali A Shah, Sheeba Murad Mall

  • 1NUST Centre of Virology and Immunology, National University of Sciences and Technology, H-12, Islamabad, Pakistan. mamoona786@hotmail.com

Inflammation Research : Official Journal of the European Histamine Research Society ... [Et Al.]
|January 27, 2012
PubMed
Summary

Toll-like receptor 4 (TLR4) recognizes pathogens and endogenous molecules, initiating immune responses. Genetic variations in TLR4 influence disease susceptibility and immune outcomes.

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A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
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High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment
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A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
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A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene

Published on: April 1, 2019

Area of Science:

  • Immunology
  • Genetics
  • Microbiology

Background:

  • Toll-like receptors (TLRs) are crucial for host immune system regulation.
  • TLR4 specifically recognizes pathogen-associated molecular patterns (PAMPs) like lipopolysaccharide (LPS) and endogenous ligands.
  • Ligand binding to TLR4 triggers signaling cascades, activating inflammatory genes.

Purpose of the Study:

  • To review existing literature on Toll-like receptor 4 (TLR4) polymorphisms.
  • To explore the association between TLR4 genetic variations and disease susceptibility.

Main Methods:

  • Literature review of studies investigating TLR4 polymorphisms.
  • Analysis of reported associations between genetic variations and immune responses/disease outcomes.

Main Results:

  • Genetic variations in TLR4 significantly impact immune responses.
  • Specific TLR4 polymorphisms are linked to varying degrees of disease susceptibility.

Conclusions:

  • TLR4 genetic variations are important determinants of host defense.
  • Understanding TLR4 polymorphisms is key to predicting disease outcomes and developing targeted therapies.