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Related Concept Videos

Diabetes: Symptoms, Diagnosis, and Complications01:15

Diabetes: Symptoms, Diagnosis, and Complications

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 based on...
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
Psychoneuroimmunology: Diabetes and Cancer01:19

Psychoneuroimmunology: Diabetes and Cancer

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...
Type I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
Diabetic Neuropathy01:22

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis01:25

Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis

Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...

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Osmotic Minipump Implantation for Increasing Glucose Concentration in Mouse Cerebrospinal Fluid
06:21

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Published on: April 7, 2023

Diabetes and cognitive dysfunction.

Rory J McCrimmon1, Christopher M Ryan, Brian M Frier

  • 1Medical Research Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK. r.mccrimmon@dundee.ac.uk

Lancet (London, England)
|June 12, 2012
PubMed
Summary
This summary is machine-generated.

Type 1 and type 2 diabetes impact cognition similarly, but type 2 diabetes more often affects learning and memory. Both conditions cause neural slowing and brain changes, raising concerns about rising diabetes-related cognitive dysfunction.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Metabolic Disorders

Background:

  • Cognitive dysfunction is a recognized complication in both type 1 and type 2 diabetes.
  • While sharing similarities, distinct cognitive profiles exist between the two diabetes types.

Purpose of the Study:

  • To delineate the similarities and differences in cognitive dysfunction between type 1 and type 2 diabetes.
  • To identify common and distinct neurological and neuroimaging markers associated with diabetes-related cognitive impairment.

Main Methods:

  • Comparative analysis of cognitive performance measures, focusing on learning, memory, attention, and executive functioning.
  • Review of neuroimaging findings including cortical atrophy, white matter integrity, and brain neurometabolite concentrations.
  • Consideration of etiological factors such as chronic hyperglycemia and microvascular disease.

Main Results:

  • Type 2 diabetes is more frequently associated with deficits in learning and memory compared to type 1 diabetes.
  • Both diabetes types exhibit similar magnitudes of mental and motor slowing, and decrements in attention and executive functioning.
  • Shared neurobiological changes include neural slowing, cortical atrophy, white matter abnormalities, and altered brain neurometabolites.

Conclusions:

  • Cognitive dysfunction in diabetes presents with overlapping yet distinct features between type 1 and type 2.
  • Chronic hyperglycemia and associated vascular changes are key contributors to cognitive decline in both forms of diabetes.
  • The increasing prevalence of type 2 diabetes necessitates attention to its growing impact on cognitive health.