Publications by authors named "Jana Alber"

Article Synopsis
  • Bone cells produce FGF23, a hormone that helps regulate phosphate and vitamin D levels, with elevated FGF23 linked to chronic kidney disease and cardiovascular issues.
  • The study examined how Prostaglandin E (PGE), particularly through its receptor EP2, influences FGF23 production in bone cells, and found that PGE significantly enhances FGF23 levels.
  • Using different mouse models, the research showed that PGE signaling through EP2 and the transcription factor Nurr1 is critical for FGF23 production, suggesting potential clinical implications for conditions involving inflammation and kidney health.
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Particularly expressed in the kidney, αKlotho is a transmembrane protein that acts together with bone hormone fibroblast growth factor 23 (FGF23) to regulate renal phosphate and vitamin D homeostasis. Soluble Klotho (sKL) is released from the transmembrane form and controls various cellular functions as a paracrine and endocrine factor. αKlotho deficiency accelerates aging, whereas its overexpression favors longevity.

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Aims: Phosphate and vitamin D homeostasis are controlled by fibroblast growth factor 23 (FGF23) from bone suppressing renal phosphate transport and enhancing 24-hydroxylase (Cyp24a1), thereby inactivating 1,25(OH) D . Serum FGF23 is correlated with outcomes in several diseases. Fasting stimulates the production of ketone bodies.

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The CREDENCE trial testing canagliflozin and the EMPA-REG OUTCOME trial testing empagliflozin suggest different effects on acute kidney injury (AKI). AKI diagnosis was mainly made based on changes of serum creatinine (sCr) although this also reflect mode of action of SGLT-2 inhibitors. We analyzed both compounds in a rat AKI model.

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Objectives: Fibroblast growth factor 23 (FGF23) controls the production and degradation of biologically active vitamin D, 1,25(OH)D, and phosphate reabsorption in the kidney as a hormone synthesized by bone cells. Additional paracrine effects in other organs exist as well. As a biomarker, the FGF23 plasma concentration increases in renal and cardiovascular diseases, and is correlated with outcome.

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Endocrine and paracrine fibroblast growth factor 23 (FGF23) is a protein predominantly produced by bone cells with strong impact on phosphate and vitamin D metabolism by targeting the kidney. Plasma FGF23 concentration early rises in kidney and cardiovascular diseases correlating with progression and outcome. Lactic acid is generated in anaerobic glycolysis.

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