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Related Concept Videos

Complications of Diabetes Mellitus01:22

Complications of Diabetes Mellitus

12
Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...
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Diabetic Foot Ulcer01:31

Diabetic Foot Ulcer

26
Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory...
26
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

57
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...
57
Diabetic Ketoacidosis ll: Pathophysiology01:22

Diabetic Ketoacidosis ll: Pathophysiology

15
Diabetic ketoacidosis (DKA) is a metabolic emergency characterized by hyperglycemia, ketonemia, and metabolic acidosis. It results from severe insulin deficiency and an excess of counterregulatory hormones, leading to uncontrolled lipolysis, ketogenesis, and widespread electrolyte and fluid disturbances.Pathophysiology The central event in DKA is a profound loss of insulin action. Without insulin, glucose uptake in insulin-dependent tissues is impaired, while hepatic glucose production...
15
Diabetic Ketoacidosis l: Introduction01:25

Diabetic Ketoacidosis l: Introduction

18
DefinitionDiabetic ketoacidosis (DKA) is an acute, life-threatening complication of diabetes mellitus, characterized by a triad of hyperglycemia (blood glucose >250 mg/dL), ketonemia or ketonuria, and metabolic acidosis (arterial pH <7.30 and serum bicarbonate <18 mEq/L). It results from insulin deficiency combined with elevated levels of counterregulatory hormones—glucagon, catecholamines, cortisol, and growth hormone—leading to increased lipolysis, hepatic...
18
Type I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

19
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...
19

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Related Experiment Video

Updated: Apr 27, 2026

Fecal Microbiota Transplantation via Colonoscopy for Recurrent C. difficile Infection
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Clostridium difficile infection in diabetes.

Hui-Qi Qu1, Zhi-Dong Jiang2

  • 1Human Genetics Center, The University of Texas School of Public Health, Houston, TX, USA.

Diabetes Research and Clinical Practice
|July 13, 2014
PubMed
Summary

Diabetes increases the risk of recurrent Clostridium difficile infection (CDI). Further research is needed to understand the mechanisms behind this heightened risk in diabetic patients.

Keywords:
Clostridium difficileDiabetesGut microbiotaHost immunity

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Endocrinology

Background:

  • Diabetes mellitus poses significant challenges to healthcare systems, exacerbated by hospital-acquired infections.
  • Clostridium difficile infection (CDI) is a major concern, with diabetes identified as a risk factor for recurrent infections.

Purpose of the Study:

  • To review recent advancements in Clostridium difficile bacteriology.
  • To highlight the limited understanding of mechanisms linking diabetes to increased CDI risk.

Main Methods:

  • Literature review of studies on Clostridium difficile and diabetes.
  • Analysis of epidemiological data regarding CDI risk in diabetic populations.
  • Overview of molecular typing methods for C. difficile isolates.

Main Results:

  • Diabetes is associated with a significantly increased risk of recurrent CDI (OR 2.99).
  • Clostridium difficile is a common bacterium with diverse strains and virulence factors.
  • Molecular typing methods like PCR are available for strain identification.

Conclusions:

  • The increased risk of CDI in diabetes requires further investigation into underlying mechanisms.
  • Understanding these mechanisms is crucial for developing targeted prevention and treatment strategies.