Related Experiment Video

Updated: Jun 26, 2026

Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography
05:03

Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography

Published on: December 27, 2024

The aging eye and the role of L-carnitine and its derivatives

Nicola Pescosolido1, Barbara Imperatrice, Panagiotis Karavitis

  • 1Ophthalmic Neuroscience Program, Department of Ophthalmology, University of Rome, Sapienza, Rome, Italy.

Drugs in R&D
|December 25, 2008
PubMed

Insights

L-carnitine and its derivatives show promise in slowing age-related eye diseases like AMD. Studies indicate potential benefits for visual function and antioxidant properties, suggesting therapeutic applications.

Area of Science:

  • Ophthalmology
  • Biochemistry
  • Nutritional Science

Background:

  • Age-related eye diseases stem from intraocular tissue deterioration.
  • Carnitine plays vital roles in cellular metabolism and energy production.
  • Ocular carnitine levels and functions are areas of growing research interest.

Purpose of the Study:

  • To review the potential therapeutic applications of L-carnitine and its derivatives.
  • To explore the role of carnitine in age-related ocular pathologies.
  • To summarize existing evidence on carnitine's effects on visual function and oxidative stress.

Main Methods:

  • Review of existing literature on L-carnitine and ocular health.
  • Analysis of studies investigating carnitine's physiological roles.
  • Examination of clinical and animal model data regarding carnitine supplementation.

Main Results:

  • L-carnitine and derivatives are involved in key metabolic processes.
  • Animal studies show differential carnitine distribution in ocular tissues.
  • Acetyl-L-carnitine improved visual function parameters in age-related macular degeneration (AMD) patients.
  • L-carnitine exhibits antioxidant properties in animal models.

Conclusions:

  • L-carnitine and its derivatives hold potential for managing age-related eye conditions.
  • Further research is warranted to establish optimal therapeutic strategies.
  • Carnitine's metabolic and antioxidant functions may protect against ocular tissue degeneration.

More Related Videos

A Workflow to Quantitatively Determine Age-Related Macular Degeneration Lesion-Specific Variations in Fundus Autofluorescence08:54

A Workflow to Quantitatively Determine Age-Related Macular Degeneration Lesion-Specific Variations in Fundus Autofluorescence

Published on: May 26, 2023

Related Concept Videos

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...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
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...
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...