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In biological systems, most metabolic pathways are interconnected. The cellular respiration processes that convert glucose to ATP—such as glycolysis, pyruvate oxidation, and the citric acid cycle—tie into those that break down other organic compounds. As a result, various foods—from apples to cheese to guacamole—end up as ATP. In addition to carbohydrates, food also contains proteins and lipids—such as cholesterol and fats. All of these organic compounds are used...
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Connective tissues are one of the four main tissue types in humans that are extensively present in the body. They are characterized by cells embedded in an extracellular matrix (ECM) composed of a ground substance and three main types of protein fibers— collagen, elastic, and reticular fibers. The ground substance of connective tissues can range from a watery and jelly-like consistency to mineralized and hard. The wide variety of cells in the connective tissues include fibroblasts,...
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The connective tissues have different properties and functions in the human body. They are broadly categorized into proper, supporting, or fluid connective tissues.
Connective Tissue Proper
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During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
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Dense connective tissue contains more collagen fibers than loose connective tissue. As a consequence, it displays greater resistance to stretching. There are two major categories of dense connective tissue— regular and irregular.
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A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
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Association that Neuroimaging and Clinical Measures Have with Change in Arm Impairment in a Phase 3 Stroke Recovery Trial.

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Motor adaptation and internal model formation in a robot-mediated forcefield.

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Vagus nerve stimulation paired with rehabilitation for upper limb motor function after ischaemic stroke (VNS-REHAB): a randomised, blinded, pivotal, device trial.

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Injection of Hydrogel Biomaterial Scaffolds to The Brain After Stroke
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Dynamics of brain connectivity after stroke.

Adela Desowska1, Duncan L Turner1,2

  • 1Neuroplasticity and Neurorehabilitation Doctoral Training Programme, NeuroRehabilitation Unit, Department of Health and Nursing, College of Applied Health and Communities, University of East London, Stratford Campus, Water Lane, London E15 4LZUK.

Reviews in the Neurosciences
|February 16, 2019
PubMed
Summary

Brain connectivity changes dynamically after stroke, with motor network connections initially decreasing then increasing over time, correlating with functional recovery. Rehabilitation may enhance this neural reorganization.

Keywords:
EEGconnectivityfMRIhand functionstroke

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Area of Science:

  • Neuroscience
  • Neurology
  • Rehabilitation Science

Background:

  • Stroke significantly impacts the central nervous system, necessitating neural reorganization for recovery.
  • Understanding brain connectivity changes is crucial for effective stroke rehabilitation strategies.

Purpose of the Study:

  • To review recent longitudinal studies investigating changes in brain connectivity following stroke.
  • To analyze the relationship between neural reorganization and functional motor recovery after stroke.

Main Methods:

  • Systematic review of research papers.
  • Inclusion of studies reporting functional or effective connectivity at multiple time points in stroke patients.

Main Results:

  • Stroke initially reduces motor network connectivity, which increases over time, correlating with motor gains.
  • Long-term recovery may show randomized connectivity patterns, sometimes exceeding healthy control levels.
  • Rehabilitation interventions show potential to improve specific regional connectivity.

Conclusions:

  • Motor network connectivity reorganizes during stroke recovery, linked to behavioral improvements.
  • Analyzing connectivity patterns aids understanding of stroke adaptation and rehabilitation support.
  • Dynamic changes in brain connectivity offer insights into stroke recovery mechanisms.