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Related Concept Videos

Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

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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...
341
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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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...
325
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

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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...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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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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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Related Experiment Video

Updated: Apr 1, 2026

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
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Altered serum fatty acid composition in geriatric depression.

Ivo Marx1, Panagiotis Alexopoulos2,3, Gisela Irmisch4

  • 1Department of Psychiatry and Psychotherapy, University Medicine Rostock, Rostock, Germany. ivo.marx@med.uni-rostock.de.

Journal of Neural Transmission (Vienna, Austria : 1996)
|October 1, 2015
PubMed
Summary

Elderly individuals with depression show lower levels of fatty acids (FA), particularly n-3 polyunsaturated fatty acids (PUFA). This suggests a link between reduced FA and geriatric depression, warranting further research into n-3 PUFA

Keywords:
DepressionFatty acidsGeriatric

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Area of Science:

  • Neuroscience
  • Nutritional Psychiatry
  • Gerontology

Background:

  • Polyunsaturated fatty acids (PUFA), especially n-3 and n-6 types, are implicated in neuropsychobiological functions.
  • Lower n-3 PUFA levels are associated with major depression, and supplementation may aid treatment.
  • Serum fatty acid profiles in geriatric depression remain underexplored.

Purpose of the Study:

  • To investigate and compare serum fatty acid profiles in patients with geriatric depression and healthy elderly individuals.
  • To identify potential associations between specific fatty acids and geriatric depression.

Main Methods:

  • Serum fatty acid profiles were analyzed in 36 inpatients diagnosed with geriatric depression (DSM-IV criteria for unipolar major depression).
  • Profiles were compared with those of 37 mentally healthy elderly control subjects.
  • Body Mass Index (BMI) was assessed as a covariate.

Main Results:

  • Patients with geriatric depression exhibited significantly lower total fatty acids (FA) compared to controls.
  • Concentrations of total n-3 PUFA and eicosapentaenoic acid (EPA) were significantly lower in the geriatric depression group.
  • No significant differences in Body Mass Index were observed between the groups.

Conclusions:

  • The study indicates a significant association between lower serum fatty acid levels, particularly n-3 PUFA and EPA, and geriatric depression.
  • These findings highlight the potential role of fatty acids in the pathophysiology of geriatric depression.
  • Further research with larger cohorts and dietary interventions is recommended to elucidate the role of EPA and n-3 PUFA in geriatric depression development and treatment.