Related Experiment Video
Updated: Jul 6, 2026
09:29
Signal Attenuation as a Rat Model of Obsessive Compulsive Disorder
Published on: January 9, 2015
Axonal self-destruction and neurodegeneration.
Martin C Raff1, Alan V Whitmore, John T Finn
1MRC Laboratory for Molecular Cell Biology and Cell Biology Unit and the Biology Department, University College London, London WC1E 6BT, UK. m.raff@ucl.ac.uk
Science (New York, N.Y.)
|May 4, 2002
Summary
Neurons possess two distinct self-destruct mechanisms. One is apoptosis for cell death, while the second rapidly degenerates severed axons, a process potentially used in development and stress response.
Area of Science:
- Neurobiology
- Cellular Biology
- Developmental Neuroscience
Background:
- Neurons have intrinsic self-destruct pathways.
- Apoptosis is a known cell death mechanism in neurons.
Purpose of the Study:
- To investigate the existence and function of a second, distinct neuronal self-destruct program.
- To determine if this program is involved in axonal pruning and response to insults.
Main Methods:
- The abstract does not specify methods.
Main Results:
- Neurons possess at least two self-destruct programs.
- A second program exists in the axon, distinct from apoptosis.
- This axonal program triggers rapid degeneration of severed axons.
Conclusions:
- Neurons have a specialized mechanism for axon self-destruction.
- This mechanism may play roles in neural development and response to cellular stress.
Related Concept Videos
01:28Disorders of the Nervous Tissue
Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
01:29Psychological and Sociocultural Causes of Schizophrenia
Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
01:25Beck's Cognitive Therapy
Cognitive therapy is a psychological approach designed to address distortions in thinking, which can lead to negative emotions and unrealistic beliefs. These cognitive distortions often influence how individuals interpret and respond to situations, exacerbating emotional distress. Below are some prevalent cognitive distortions, their characteristics, and examples of how they manifest in thought processes.
Arbitrary Inference
Arbitrary inference involves making conclusions without sufficient...
Arbitrary Inference
Arbitrary inference involves making conclusions without sufficient...
01:26Personality Disorders: Narcissistic and Avoidant
Narcissistic and avoidant personality traits represent two contrasting patterns of behavior that significantly influence social interactions and self-perception. While individuals with narcissistic disorder seek admiration and validation, individuals with avoidant personality disorder withdraw due to fear of judgment.
Characteristics of Narcissistic Personality Disorder
Narcissistic individuals exhibit an inflated sense of self-importance and an excessive need for admiration. They are often...
Characteristics of Narcissistic Personality Disorder
Narcissistic individuals exhibit an inflated sense of self-importance and an excessive need for admiration. They are often...
01:25Borderline Personality Disorder
Borderline Personality Disorder is a complex and multifaceted mental health condition characterized by pervasive instability in interpersonal relationships, self-image, emotions, and impulse control. This instability manifests in extreme emotional reactions, fear of abandonment, and self-destructive behaviors. The disorder significantly impacts daily functioning, often leading to distress in both personal and professional domains.
Genetic and Environmental Contributions
Borderline Personality...
Genetic and Environmental Contributions
Borderline Personality...