Potential role of stress-induced gluconeogenesis in disease aggravation and mortality in pyruvate dehydrogenase

Jiyoung Oh1, Chungmo Koo2, Kyung Won Kim3

  • 1Division of Clinical Genetics, Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.

Medical Hypotheses
|December 11, 2020
PubMed

Insights

Pyruvate dehydrogenase deficiency, a metabolic disorder, may worsen due to stress-induced gluconeogenesis. This study explores the link between this process and disease exacerbation in patients with pyruvate dehydrogenase complex defects.

Area of Science:

  • Biochemistry
  • Metabolic disorders
  • Genetics

Background:

  • Pyruvate dehydrogenase (PDH) deficiency is an inherited metabolic disorder affecting glucose metabolism.
  • The exact mechanisms driving disease progression in PDH deficiency remain unclear.
  • The pyruvate dehydrogenase complex (PDHC) is crucial for cellular energy production.

Purpose of the Study:

  • To investigate the potential role of stress-induced gluconeogenesis in the rapid exacerbation of Pyruvate Dehydrogenase Deficiency.
  • To establish a previously unrecognized link between gluconeogenesis and PDH deficiency progression.

Main Methods:

  • Case observation of a patient with PDH deficiency.
  • Analysis of metabolic pathways and patient data.
  • Hypothesis formulation based on clinical observations.

Main Results:

  • Repeated observations suggest a correlation between stress and disease exacerbation in PDH deficiency.
  • A hypothesis was formed linking stress-induced gluconeogenesis to disease worsening.
  • This specific link has not been previously documented in scientific literature.

Conclusions:

  • Stress-induced gluconeogenesis is hypothesized to be a contributing factor to the rapid progression of Pyruvate Dehydrogenase Deficiency.
  • Further research is warranted to validate this hypothesis and explore therapeutic implications.
  • Understanding this link may offer new insights into managing PDH deficiency.

Related Concept Videos

Fates of Pyruvate01:20

Fates of Pyruvate

Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
9.9K
Overview of Carbohydrate Metabolism01:19

Overview of Carbohydrate Metabolism

Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
2.7K
Biosynthesis of Polysaccharides01:26

Biosynthesis of Polysaccharides

Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
300
What is Glycolysis?00:56

What is Glycolysis?

Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
173.6K
Glycolysis01:23

Glycolysis

Glycolysis, the Embden-Meyerhof pathway, is a central metabolic pathway involved in glucose catabolism. It is highly conserved across most organisms, reflecting its fundamental role in cellular energy production. This process occurs in the cytoplasm and can function both in the presence and absence of oxygen, making it versatile for various organisms and environmental conditions.Stages of GlycolysisGlycolysis is a ten-step pathway that converts glucose into pyruvate, generating a net gain of...
975
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...
171