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Related Concept Videos

Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility, suggesting a...
Diabetes Insipidus II: Pathophysiology01:22

Diabetes Insipidus II: Pathophysiology

Normally, water balance is maintained through three interconnected mechanisms: the hypothalamic thirst center, the synthesis and release of antidiuretic hormone (ADH, or vasopressin), and the kidneys' responsiveness to this hormone. ADH is synthesized in the hypothalamus, released from the posterior pituitary, and acts on the distal nephron, allowing water reabsorption and concentrated urine production.Diabetes Insipidus and Its TypesIn diabetes insipidus (DI), this regulatory system is...
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
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...
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.
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...

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Related Experiment Video

Updated: Jul 17, 2026

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice
08:51

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

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[Brainstem auditory evoked potentials in diabetes mellitus].

C H Pan1, T J Chen, S S Chen

  • 1Department of Neurology, Show Chwan Memorial Hospital.

Zhonghua Yi Xue Za Zhi = Chinese Medical Journal; Free China Ed
|April 1, 1992
PubMed
Summary

Diabetic neuropathy affects both peripheral nerves and central pathways in patients with non-insulin-dependent (NIDDM) and insulin-dependent (IDDM) diabetes. Auditory brainstem response (ABR) studies reveal conduction delays in both groups.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Audiology

Context:

  • Diabetic neuropathy is a common complication affecting both peripheral and autonomic nerves.
  • Emerging evidence suggests central nervous system involvement in diabetes.
  • Auditory pathways may be affected, necessitating investigation through Brainstem Auditory Evoked Potential (BAEP) studies.

Purpose:

  • To investigate central auditory pathway abnormalities in patients with non-insulin-dependent diabetes mellitus (NIDDM) and insulin-dependent diabetes mellitus (IDDM).
  • To correlate BAEP findings with peripheral nerve conduction studies and glycemic control.
  • To compare central auditory function between diabetic subgroups and healthy controls.

Summary:

  • BAEP analysis in 61 NIDDM and 11 IDDM patients revealed prolonged peak latencies and interpeak latencies (IPLs), indicating central conduction dysfunction.
  • Peripheral nerve conduction velocities (MNCV and SNCV) of the median nerve were significantly delayed in both diabetic groups.
  • While amplitude differences were not significant in NIDDM, IDDM patients showed reduced amplitudes in specific BAEP waves, suggesting more widespread auditory pathway involvement.

Impact:

  • This study confirms the presence of both peripheral and central nervous system dysfunction in diabetic patients.
  • Findings highlight the importance of considering central auditory pathway integrity in the comprehensive management of diabetes.
  • Results provide a basis for further research into the mechanisms and clinical implications of central auditory abnormalities in diabetes.