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Related Concept Videos

Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

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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.
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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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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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Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
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Hormones Regulating Blood Glucose01:16

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Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
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Insulin: Biosynthesis, Chemistry, and Preparation01:25

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The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
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Posttranslational modifications in diabetes: Mechanisms and functions.

Ang Hu1, Haohong Zou1, Bin Chen1,2

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Posttranslational modifications (PTMs) are key to understanding diabetes complexity. This review explores PTMs

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Area of Science:

  • Biochemistry
  • Endocrinology
  • Molecular Biology

Background:

  • Diabetes mellitus is a global chronic disease with significant morbidity and mortality.
  • Diabetes involves complex cellular signaling pathways influenced by posttranslational modifications (PTMs).

Purpose of the Study:

  • To provide a comprehensive overview of the interplay between PTMs and diabetes (Types 1 and 2).
  • To discuss the therapeutic potential of PTMs in managing diabetes.
  • To suggest future research directions for understanding metabolic diseases.

Main Methods:

  • Literature review and synthesis of existing research on PTMs and diabetes.

Main Results:

  • PTMs play a critical role in the regulatory networks underlying diabetes.
  • Understanding PTM mechanisms is crucial for diabetes prediction, diagnosis, and treatment.

Conclusions:

  • PTMs are integral to diabetes pathogenesis and progression.
  • Targeting PTMs offers promising avenues for novel diabetes therapies.
  • Further research into PTMs will advance our understanding of metabolic diseases.