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Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Public Health.

Gregory Brown1,2, Diego Bustamante-Paytan3, José Carlos Huilca4

  • 1Instituto Peruano de Neurociencias, Lima, Lima, Peru.

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|December 23, 2025
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Summary
This summary is machine-generated.

Knowledge of Indigenous languages may protect the brain from atrophy in low-education individuals. Diabetes was unexpectedly linked to fewer white matter changes, warranting further study in neuroprotection research.

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Area of Science:

  • Neuroscience
  • Public Health
  • Medical Imaging

Background:

  • Global rise in dementia, particularly in Latin America.
  • Low education linked to reduced cognitive reserve and increased neurodegeneration vulnerability.
  • Factors influencing brain alterations in low-education populations are under-researched.

Purpose of the Study:

  • Evaluate associations between brain atrophy scales and health factors in a low-education Peruvian cohort.
  • Investigate neuroprotection and vulnerability determinants in this population.
  • Understand structural brain changes in relation to health and linguistic background.

Main Methods:

  • Study included 205 cognitively healthy individuals with low education (<7 years).
  • Non-contrast brain MRIs assessed global cortical atrophy (GCA), medial temporal lobe atrophy (MTA), Koedam, ERICA, and Fazekas scales.
  • Linear regression analyzed associations between health factors and MRI metrics; evaluations were blinded.

Main Results:

  • Indigenous language knowledge (Quechua/Aymara) showed neuroprotection for GCA, MTA, and ERICA (p<0.05).
  • Type 2 diabetes mellitus associated with lower Fazekas scores (fewer white matter hyperintensities, p=0.039).
  • Smoking, hypercholesterolemia, and hypertension had no significant effects on MRI metrics.

Conclusions:

  • Indigenous language knowledge may offer neuroprotection against cortical and medial temporal atrophy.
  • The link between diabetes and reduced white matter hyperintensities needs further investigation.
  • Further research is needed to identify brain structure determinants in low-education populations, especially regarding vascular risk factors.