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Assaying for Inorganic Polyphosphate in Bacteria

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Phosphate: a stealthier killer than previously thought?

Emilio Gonzalez-Parra¹, Jose Tuñón, Jesus Egido

¹Nephrology Department, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid. egonzalezpa@senefro.org

Cardiovascular Pathology : the Official Journal of the Society for Cardiovascular Pathology

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Summary

This summary is machine-generated.

Phosphate overload, indicated by elevated fibroblast growth factor-23, is linked to poor cardiovascular outcomes, even in those without chronic kidney disease. Managing dietary phosphate is crucial for patient health.

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Area of Science:

Nephrology
Cardiology
Metabolic Disorders

Background:

Kidneys regulate phosphate excretion; chronic kidney disease (CKD) can lead to phosphate overload and hyperphosphatemia.
Hyperphosphatemia in CKD is a risk factor for vascular calcification, cardiovascular mortality, and disease progression.
Elevated serum phosphate, even within normal limits, is linked to adverse outcomes in patients with preserved kidney function.

Purpose of the Study:

To review the pathophysiology of phosphate and its connection to cardiovascular outcomes.
To discuss the clinical relevance of phosphate overload and management strategies.
To explore the role of fibroblast growth factor-23 (FGF-23) as a marker for phosphate overload.

Main Methods:

Literature review of studies on phosphate metabolism, cardiovascular disease, and CKD.
Analysis of the role of FGF-23 in phosphate homeostasis and cardiovascular risk.
Examination of dietary phosphate and phosphate binder implications.

Main Results:

Hyperphosphatemia is not a sensitive indicator of phosphate overload; FGF-23 is a more reliable marker.
Increased FGF-23 is independently associated with adverse cardiovascular outcomes in patients with and without CKD.
Phosphate overload may contribute to vascular calcification and left ventricular hypertrophy.

Conclusions:

Phosphate overload poses significant cardiovascular risks, extending beyond patients with overt CKD.
Fibroblast growth factor-23 is a key mediator and marker in phosphate-related cardiovascular pathology.
Clinical strategies should address dietary phosphate intake and consider phosphate binders for at-risk patients.