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Related Concept Videos

Alzheimer Disease ll: Pathophysiology01:23

Alzheimer Disease ll: Pathophysiology

Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Alzheimer's Disease: Treatment01:22

Alzheimer's Disease: Treatment

Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...

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Related Experiment Video

Updated: May 30, 2026

Automated, Long-term Behavioral Assay for Cognitive Functions in Multiple Genetic Models of Alzheimer's Disease, Using IntelliCage
06:46

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Published on: August 4, 2018

Proposal for Alzheimer's diagnosis using molecular buffer and bus network.

S Mitatha1, N Moongfangklang, M A Jalil

  • 1Hybrid Computing Research Laboratory, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand.

International Journal of Nanomedicine
|August 9, 2011
PubMed
Summary

A novel optical trapping tool uses PANDA ring resonators to manipulate tangle proteins and molecular motors. This technology shows potential for dynamic molecular transport and Alzheimer's disease diagnosis.

Keywords:
Alzheimer’s diseasemolecular diagnosismolecular networksoptical trapping tool

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Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
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Automated, Long-term Behavioral Assay for Cognitive Functions in Multiple Genetic Models of Alzheimer's Disease, Using IntelliCage
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09:38

Generalized Psychophysiological Interaction (PPI) Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease

Published on: November 14, 2017

Area of Science:

  • Biophotonics
  • Nanotechnology
  • Molecular Biology

Background:

  • Tangle proteins like tau tangles and beta-amyloid plaques are implicated in neurodegenerative diseases such as Alzheimer's.
  • Efficient manipulation and storage of these biomolecules are crucial for research and diagnostics.
  • Existing methods for molecular manipulation face limitations in precision and dynamic control.

Purpose of the Study:

  • To propose a novel optical trapping tool design utilizing a PANDA ring resonator.
  • To investigate the potential of optical vortices for trapping and manipulating tangle proteins and molecular motors.
  • To explore the application of this technology in molecular storage, delivery, and Alzheimer's diagnosis.

Main Methods:

  • Theoretical design of an optical trapping system based on a PANDA ring resonator.
  • Generation and control of optical vortices for creating trapping forces.
  • Analysis of trapping force mechanisms, including gradient and scattering forces.
  • Simulation of dynamic trapping and movement of molecular volumes within a buffer and bus network.

Main Results:

  • The proposed design theoretically enables the generation and control of optical vortices for trapping.
  • The PANDA ring resonator facilitates intense optical vortex generation for molecular manipulation.
  • The system allows for dynamic trapping and movement of molecular volumes, including tangle proteins and molecular motors.
  • The study reviews the principles of optical trapping forces, combining gradient and scattering effects.

Conclusions:

  • The novel optical trapping tool design shows promise for precise molecular manipulation.
  • This technology could enable efficient storage and delivery of tangle proteins and molecular motors.
  • The system holds potential for advancing Alzheimer's disease diagnosis through molecular analysis.