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The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...

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Related Experiment Video

Updated: Jun 23, 2026

A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

Published on: April 11, 2014

Alpha-tocopherol: looking beyond an antioxidant.

Kaya Nusret Engin¹

¹Bağcilar Education and Research Hospital, Department of Ophthalmology, Istanbul, Turkey. kayanengin@hotmail.com

Molecular Vision

|April 25, 2009

Summary

Alpha-tocopherol, a form of vitamin E, offers benefits beyond its antioxidant role. It shows potential in treating eye conditions like glaucoma and cataracts by regulating protein kinase C pathways.

Area of Science:

Biochemistry
Ophthalmology
Cell Biology

Background:

Vitamin E, particularly alpha-tocopherol, is a key natural antioxidant.
The body actively regulates tissue levels of tocopherols via specific transport proteins and receptors.
Alpha-tocopherol exhibits unique antiproliferative and protein kinase C-suppressing effects not seen with beta-tocopherol or probucol.

Purpose of the Study:

To explore the regulatory and therapeutic potential of alpha-tocopherol beyond its antioxidant functions.
To investigate the role of alpha-tocopherol in pathways relevant to ocular health, including glaucoma and cataractogenesis.
To identify novel applications for alpha-tocopherol in ophthalmology.

Main Methods:

Review of existing literature on alpha-tocopherol's biological effects.

Related Experiment Videos

Last Updated: Jun 23, 2026

A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

A Rapid and Specific Microplate Assay for the Determination of Intra- and Extracellular Ascorbate in Cultured Cells

Published on: April 11, 2014

Analysis of alpha-tocopherol's interaction with the diacylglycerol-protein kinase C pathway.

Examination of antiproliferative effects in human Tenon's capsule fibroblasts.

Main Results:

Alpha-tocopherol prevents hyperglycemia-induced retinal vascular dysfunction via the diacylglycerol-protein kinase C pathway.
Protein kinase C, modulated by alpha-tocopherol, influences glutamate transporter activity and intraocular pressure.
Demonstrated antiproliferative effects of alpha-tocopherol on human Tenon's capsule fibroblasts suggest potential in filtration surgery.

Conclusions:

Alpha-tocopherol possesses significant regulatory properties that extend beyond its antioxidant capacity.
Its modulation of protein kinase C pathways holds promise for managing glaucoma, cataracts, and post-surgical complications.
Further research into alpha-tocopherol's therapeutic applications in ophthalmology is warranted.