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Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Dementia01:30

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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
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Diabetes and cognitive decline.

Chiara Bellia1, Mauro Lombardo2, Marco Meloni3

  • 1Department of Biomedicine, Neurosciences, and Advanced Diagnostics, University of Palermo, Palermo, Italy.

Advances in Clinical Chemistry
|June 6, 2022
PubMed
Summary

Diabetes is linked to cognitive decline in older adults. This review explores molecular links and biomarkers for early detection in diabetic patients.

Keywords:
Alzheimer diseaseAmyloid beta-peptidesBiomarkersBlood glucoseDementiaDiabetes mellitusGlycated hemoglobinRisk assessmentTau proteinVascular dementia

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Geriatrics

Background:

  • Epidemiologic studies show diabetes increases cognitive decline risk in the elderly.
  • Proposed mechanisms include impaired insulin signaling, neurodegeneration, amyloidosis, and neuroinflammation, but human data is limited.
  • Early detection of neurological symptoms in diabetics is crucial for quality of life and cost reduction.

Purpose of the Study:

  • To review molecular mechanisms linking diabetes and cognitive decline.
  • To present findings on clinical biomarker use for early cognitive decline diagnosis and prediction in diabetics.

Main Methods:

  • Literature review of epidemiologic and animal model studies.
  • Analysis of proposed molecular pathways.
  • Evaluation of current and potential biomarkers for dementia in diabetic populations.

Main Results:

  • Diabetes is associated with increased risk of cognitive impairment and dementia.
  • Several molecular pathways are implicated, including insulin resistance, neuroinflammation, and oxidative stress.
  • Biomarkers for amyloidosis, neurodegeneration, and synaptic plasticity show potential but require further validation in diabetic cohorts.

Conclusions:

  • Understanding the molecular links between diabetes and cognitive decline is essential.
  • Biomarkers are critical for early diagnosis and prediction of cognitive impairment in elderly diabetics.
  • Further research is needed to clarify the role of specific biomarkers in diabetes-related cognitive decline.