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Related Concept Videos

Long-term Potentiation01:35

Long-term Potentiation

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
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Longitudinal Research02:20

Longitudinal Research

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
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Benign multiple sclerosis and long-term outcomes after 30 years.

E Matas1,2, L Bau3,4, L Romero-Pinel3,4

  • 1Multiple Sclerosis Unit, Department of Neurology, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Feixa Llarga s/n, 08907, Barcelona, Spain. ematas@bellvitgehospital.cat.

Journal of Neurology
|November 5, 2025
PubMed
Summary
This summary is machine-generated.

Most patients with multiple sclerosis (MS) maintain a benign disease course for over 30 years. However, cognitive impairment is a significant concern even in benign MS cases.

Keywords:
Benign multiple sclerosisCognitionLong-term outcomePrognosis

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Area of Science:

  • Neurology
  • Clinical Research

Background:

  • The definition of benign multiple sclerosis (MS) is debated, often relying solely on Expanded Disability Status Scale (EDSS) and disease duration.
  • Other factors influencing patient disability are not always considered in benign MS definitions.

Purpose of the Study:

  • To determine the prevalence of benign MS in a specific cohort.
  • To assess the long-term disease course (20 and 30 years) of patients initially classified as benign MS.
  • To identify clinical and demographic factors associated with maintaining a benign MS status.

Main Methods:

  • Prospective follow-up of patients meeting benign MS criteria (EDSS < 3.0 and >= 10 years of disease).
  • Assessment of EDSS scores at 20 and 30 years post-diagnosis.
  • Evaluation of clinical, radiological, fatigue, depression, and cognitive variables.

Main Results:

  • Out of 485 patients, 82 initially met benign MS criteria.
  • After 20 years, 75% of benign MS patients maintained an EDSS ≤ 3; after 30 years, 60% did.
  • No clinical variables predicted sustained benign status. Significant fatigue (50%), depression (22%), and cognitive impairment (83%) were reported by patients at 30 years.

Conclusions:

  • The majority of multiple sclerosis patients retain a benign disease status long-term.
  • Cognitive impairment is a prevalent issue in patients with long-standing benign MS, warranting attention.