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How Alzheimer’s Disease Affects Your Brain Cells скачать в хорошем качестве

How Alzheimer’s Disease Affects Your Brain Cells 1 year ago

animation

nucleus medical media

patient education

patient engagement

medical

education

video

brain

Alzheimer's disease

cognition

cognitive

memory

neurons

nerves

cells

dendrites

action potential

axon

neurotransmitters

receptors

communication

learning

memory loss

amyloid

protein

beta-amyloid

peptide

enzyme

enzymatic

tau

ions

nutrients

chemicals

plaques

neurofibrillary tangles

microtubules

cholinesterase

acetylcholine

antiglutamatergic

medications

dysfunction

anatomy

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How Alzheimer’s Disease Affects Your Brain Cells

MEDICAL ANIMATION TRANSCRIPT: The brain's cognitive functions include memory, which is the process of information retention and retrieval. Memories form in the hippocampus, which consists of information-processing cells called neurons. Each neuron receives chemical messages from other neurons via dendrites, then converts the message to an electrical charge called an action potential. In the space between them, neurons release stimulatory chemicals called neurotransmitters, which bind with receptors on the receiving cell and transfer information. Alzheimer's disease is a gradual, degenerative brain condition in which neurons in the memory and other cognitive areas of the brain lose function and die, resulting in progressive memory loss first, then difficulties learning and communicating, and, eventually, failing basic functions like breathing. In healthy neurons, enzymes help process a protein called amyloid precursor protein into fragments which help with normal cell function. In Alzheimer's, abnormal enzymatic processing produces fragments that include a sticky peptide called beta amyloid. Beta amyloid accumulates in the extracellular space, forming clumps called amyloid plaques. These clumps block the electrical and chemical connections between neurons. Inside healthy neurons, microtubules and tau proteins form an orderly structure that carries ions and nutrients within the cell. In Alzheimer's, chemical changes inside the neurons damage tau, twisting microtubules abnormally into neurofibrillary tangles, which disrupts ion and nutrient delivery within the cell. As the plaques and tangles multiply throughout brain tissue, neural connections diminish, and the malnourished cells lose function, resulting in widespread neural death, reduced brain mass, and severe cognitive and functional impairment. There is no cure for Alzheimer's, but current treatments include cholinesterase inhibitors, which delay the breakdown of acetylcholine, a neurotransmitter important for memory and learning, and antiglutamatergic medications, which regulate the activity of glutamate, another neurotransmitter essential for memory and learning, by blocking excessive glutamate binding to neurons, thus preventing neuronal dysfunction and death. ♪ [music] ♪ #AlzheimersDisease #MemoryLoss #BrainCells ANM11034

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