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Related Concept Videos

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

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...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Antibody Actions01:26

Antibody Actions

Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...

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Related Experiment Video

Updated: Jun 21, 2026

Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation
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Assessment of Antibody-based Drugs Effects on Murine Bone Marrow and Peritoneal Macrophage Activation

Published on: December 26, 2017

[Anti-aging drugs].

Atsushi Kuno1, Yoshiyuki Horio

  • 1Department of Pharmacology, Sapporo Medical University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|July 14, 2009
PubMed
Summary
This summary is machine-generated.

Scientists are uncovering the secrets of aging by studying simple organisms. Certain drugs, like ethosuximide and resveratrol, have been found to extend lifespan, offering clues to understanding aging in more complex species.

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Neurodegeneration in an Animal Model of Chronic Amyloid-beta Oligomer Infusion Is Counteracted by Antibody Treatment Infused with Osmotic Pumps
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Published on: September 10, 2018

Area of Science:

  • Gerontology and molecular biology research.
  • Studies on model organisms including yeast, Caenorhabditis elegans, and Drosophila.
  • Investigation into the genetic and pharmacological manipulation of aging processes.

Context:

  • The fundamental mechanisms underlying aging remain largely unknown.
  • Recent research indicates that lifespan can be modulated through genetic interventions in model organisms.
  • Identification of specific compounds that promote longevity in these species.

Purpose:

  • To explore how genetic and drug-induced interventions affect lifespan in model organisms.
  • To identify potential molecular targets and pathways involved in the aging process.
  • To leverage findings from simpler organisms to gain insights into mammalian aging.

Summary:

  • Genetic manipulations and drug treatments in yeast, C. elegans, and Drosophila have demonstrated the ability to extend lifespan.
  • Compounds such as ethosuximide, mianserin, antioxidants, histone deacetylase inhibitors, and resveratrol (a Sir2 activator) have shown significant lifespan-extending effects.
  • While direct lifespan extension in mammals has not yet been observed for these drugs, they serve as crucial molecular probes.

Impact:

  • Provides valuable molecular insights into the complex mechanisms of aging.
  • Identifies specific drugs and pathways that can be further investigated for anti-aging potential.
  • Suggests a translational approach from model organisms to understanding and potentially intervening in mammalian aging.