What are the differences between peroxisomes and lysosomes?

May 12, 2023 Source: Cainiu Health
Dr. Yang Shuwen
Introduction
Peroxisomes differ from lysosomes in terms of their contents, functions, and formation processes. Peroxisomes contain approximately 40 kinds of oxidases and catalase, whereas lysosomes contain various hydrolases. The main function of peroxisomes is to catalyze the beta-oxidation of fatty acids, breaking down very long-chain fatty acids into short-chain fatty acids.

Peroxisomes differ from lysosomes in terms of their contents, functions, and formation processes. The specific differences are as follows:
1. Different contents
Peroxisomes contain approximately 40 kinds of oxidases and catalase, whereas lysosomes contain various hydrolases.
2. Different functions
The primary function of peroxisomes is to catalyze the β-oxidation of fatty acids, breaking down very-long-chain fatty acids into shorter-chain fatty acids. Lysosomes break down substances that enter the cell from the outside and can also digest portions of the cell's own cytoplasm or organelles. When a cell ages, its lysosomes rupture, releasing hydrolases that digest the entire cell, leading to cell death.
3. Different formation processes
Peroxisomes are similar to mitochondria or chloroplasts but do not contain DNA. Proteins that constitute peroxisomes are encoded in the nucleus and synthesized in the cytosol, then imported into peroxisomes via signal-dependent sorting. Primary lysosomes are formed by budding from the trans side of the Golgi apparatus and may involve concentration and accumulation of lysosomal enzymes.
Medications should be taken under a doctor's guidance; self-medication should be avoided to prevent adverse effects on the body. Adequate rest should be maintained, and excessive fatigue should be avoided.