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Related Concept Videos

Phosphorylation01:02

Phosphorylation

The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Phosphorylation01:02

Phosphorylation

The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
Roles of Electrolytes: Calcium and Phosphate01:27

Roles of Electrolytes: Calcium and Phosphate

Calcium and phosphate are essential electrolytes in the human body, with calcium being the most abundant mineral. Around 99% of the body's calcium is stored in the skeleton and teeth, forming a crystal lattice of mineral salts in combination with phosphates. Calcium plays crucial roles in various bodily functions such as blood clotting, neurotransmitter release, muscle tone maintenance, and nervous and muscle tissue excitability.
The calcium concentration in blood plasma is primarily regulated...
Protein Kinases and Phosphatases02:54

Protein Kinases and Phosphatases

Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Introduction to Electrolytes01:33

Introduction to Electrolytes

In humans, electrolytes play a vital role in various physiological processes. Balancing electrolyte levels is essential for normal body functions; their imbalance can be life-threatening. The major electrolytes include sodium, potassium, chloride, calcium, phosphate, and bicarbonate. They are primarily involved in physiological processes, such as nerve signal transmission, membrane trafficking, muscle contraction, buffering body fluids, and balancing water levels in the body.
Role of Sodium
One...

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A Simple Protocol for Mapping the Plant Root System Architecture Traits
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Direct effects of phosphate on vascular cell function.

Wei Ling Lau1, Ashwini Pai, Sharon M Moe

  • 1Department of Nephrology, University of Washington, Seattle, USA.

Advances in Chronic Kidney Disease
|March 17, 2011
PubMed
Summary

High phosphate levels contribute to vascular stiffness and heart disease. This review details how phosphate affects blood vessel walls, leading to calcification and cell changes.

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Area of Science:

  • Cardiovascular Biology
  • Vascular Physiology
  • Mineral Metabolism

Background:

  • Elevated serum phosphate is linked to vascular stiffness and cardiovascular mortality.
  • Phosphate's local effects on the vessel wall are increasingly understood, highlighting pathways to vascular calcification.
  • Smooth muscle cell (SMC) phenotype modulation and apoptosis are key processes in phosphate-induced vascular damage.

Purpose of the Study:

  • To review current knowledge on phosphate-induced changes in the vascular wall.
  • To elucidate the mechanisms linking phosphate to vascular calcification and dysfunction.
  • To highlight the roles of specific transporters like PiT-1 in vascular pathology.

Main Methods:

  • Review of mechanistic studies on phosphate's effects on the vasculature.
  • Analysis of in vitro data on smooth muscle cell differentiation.
  • Examination of pathways involved in vascular calcification and elastin degradation.

Main Results:

  • Phosphate promotes osteochondrogenic differentiation of vascular smooth muscle cells via PiT-1.
  • Phosphate contributes to vascular calcification through smooth muscle cell apoptosis and phenotype changes.
  • Phosphate's role in valve interstitial cell calcification and elastin degradation requires further investigation.

Conclusions:

  • Phosphate significantly impacts vascular health by promoting calcification and cell death.
  • Understanding these mechanisms is crucial for developing therapeutic strategies against phosphate-related cardiovascular disease.
  • Further research is needed to fully comprehend phosphate's role in valvular heart disease.