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Apoptosis: molecular mechanisms and implications for human disease
1Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Abstract:
Apoptosis is a highly regulated process of cell death with characteristic morphological changes that are distinct from necrosis. The biochemical machinery responsible for apoptotic cell death appears to be constitutively expressed in most, if not all, cells and can be triggered by a variety of signals, including sustained increases in the intracellular Ca2+ level. Apoptosis is the main mechanism of cell deletion during development, normal cell turnover, hormone-induced tissue atrophy, and pathological processes such as T-cell depletion in HIV/AIDS and neurodegenerative disease. The aim of this review is to briefly summarize current knowledge of the molecular mechanisms of apoptosis and its role in human disease.
Insights
Apoptosis, a regulated cell death, involves distinct changes and is triggered by signals like calcium. This process is crucial in development, cell turnover, and diseases such as HIV/AIDS and neurodegenerative conditions.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Apoptosis is a regulated cellular process distinct from necrosis.
- Its molecular machinery is present in most cells and can be activated by various signals, including intracellular calcium (Ca2+).
- Apoptosis plays a key role in development, normal cell turnover, and pathological conditions.
Purpose of the Study:
- To review the molecular mechanisms underlying apoptosis.
- To summarize the role of apoptosis in human diseases.
Main Methods:
- Literature review of current knowledge on apoptosis.
Main Results:
- Apoptosis is characterized by specific morphological and biochemical changes.
- It is a fundamental process in physiological and pathological contexts.
- Dysregulation of apoptosis is implicated in diseases like HIV/AIDS and neurodegenerative disorders.
Conclusions:
- Understanding apoptosis mechanisms is vital for comprehending its role in human health and disease.
- Further research into apoptosis pathways may offer therapeutic targets for various diseases.