Fibroblast growth-factor 23 and vitamin D are associated with iron deficiency and anemia in children with chronic kidney disease

Background This cross-sectional study investigates the association of fibroblast growth-factor 23 (FGF23) and other bone mineral parameters with iron status and anemia in pediatric chronic kidney disease (CKD). Methods Serum calcium, phosphorus, 25-hydroxyvitamin D (25(OH)D), intact parathormone, c-...

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Veröffentlicht in:Pediatric nephrology (Berlin, West) West), 2023-08, Vol.38 (8), p.2771-2779
Hauptverfasser: Karava, Vasiliki, Dotis, John, Kondou, Antonia, Christoforidis, Athanasios, Taparkou, Anna, Farmaki, Evangelia, Economou, Marina, Printza, Nikoleta
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container_title Pediatric nephrology (Berlin, West)
container_volume 38
creator Karava, Vasiliki
Dotis, John
Kondou, Antonia
Christoforidis, Athanasios
Taparkou, Anna
Farmaki, Evangelia
Economou, Marina
Printza, Nikoleta
description Background This cross-sectional study investigates the association of fibroblast growth-factor 23 (FGF23) and other bone mineral parameters with iron status and anemia in pediatric chronic kidney disease (CKD). Methods Serum calcium, phosphorus, 25-hydroxyvitamin D (25(OH)D), intact parathormone, c-terminal FGF23, a-Klotho, iron (Fe), ferritin, unsaturated iron-binding capacity, and hemoglobin (Hb) were measured in 53 patients from 5 to 19 years old with GFR  100 ng/mL, TSAT ≤ 20%) were observed in 32% and 7.5% of patients, respectively. In CKD stages 3–4 (36 patients), lnFGF23 and 25(OH)D were correlated with Fe (rs =  − 0.418, p  = 0.012 and rs = 0.467, p  = 0.005) and TSAT (rs =  − 0.357, p  = 0.035 and rs = 0.487, p  = 0.003) but not to ferritin. In this patient group, lnFGF23 and 25(OH)D were correlated with Hb z -score (rs =  − 0.649, p  
doi_str_mv 10.1007/s00467-023-05903-3
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Methods Serum calcium, phosphorus, 25-hydroxyvitamin D (25(OH)D), intact parathormone, c-terminal FGF23, a-Klotho, iron (Fe), ferritin, unsaturated iron-binding capacity, and hemoglobin (Hb) were measured in 53 patients from 5 to 19 years old with GFR &lt; 60 mL/min/1.73 m 2 . Transferrin saturation (TSAT) was calculated. Results Absolute (ferritin ≤ 100 ng/mL, TSAT ≤ 20%) and functional iron deficiency (ferritin &gt; 100 ng/mL, TSAT ≤ 20%) were observed in 32% and 7.5% of patients, respectively. In CKD stages 3–4 (36 patients), lnFGF23 and 25(OH)D were correlated with Fe (rs =  − 0.418, p  = 0.012 and rs = 0.467, p  = 0.005) and TSAT (rs =  − 0.357, p  = 0.035 and rs = 0.487, p  = 0.003) but not to ferritin. In this patient group, lnFGF23 and 25(OH)D were correlated with Hb z -score (rs =  − 0.649, p  &lt; 0.001 and rs = 0.358, p  = 0.035). No correlation was detected between lnKlotho and iron parameters. In CKD stages 3–4, in multivariate backward logistic regression analysis, including bone mineral parameters, CKD stage, patient age, and daily alphacalcidol dose as covariates, lnFGF23 and 25(OH)D were associated with low TSΑΤ (15 patients) (OR 6.348, 95% CI 1.106–36.419, and OR 0.619, 95% CI 0.429–0.894, respectively); lnFGF23 was associated with low Hb (10 patients) (OR 5.747, 95% CI 1.270–26.005); while the association between 25(OH)D and low Hb did not reach statistical significance (OR 0.818, 95% CI 0.637–1.050). Conclusions In pediatric CKD stages 3–4, iron deficiency and anemia are associated with increased FGF23, independently of Klotho. Vitamin D deficiency might contribute to iron deficiency in this population. Graphical abstract A higher resolution version of the Graphical abstract is available as Supplementary information</description><identifier>ISSN: 0931-041X</identifier><identifier>ISSN: 1432-198X</identifier><identifier>EISSN: 1432-198X</identifier><identifier>DOI: 10.1007/s00467-023-05903-3</identifier><identifier>PMID: 36862253</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>25-Hydroxyvitamin D ; Adolescent ; Adult ; Alfacalcidol ; Anemia ; Anemia, Iron-Deficiency - diagnosis ; Anemia, Iron-Deficiency - etiology ; Calcifediol ; Calcium (blood) ; Child ; Child, Preschool ; Children ; Chronic kidney failure ; Complications and side effects ; Cross-Sectional Studies ; Diseases ; Ferritin ; Ferritins ; Fibroblast growth factor 23 ; Fibroblast growth factor receptors ; Fibroblasts ; Fibroblasts - metabolism ; Health aspects ; Hemoglobin ; Hemoglobins - metabolism ; Humans ; Iron ; Iron Deficiencies ; Iron deficiency ; Kidney diseases ; Klotho protein ; Medicine ; Medicine &amp; Public Health ; Minerals - metabolism ; Nephrology ; Nutrient deficiency ; Original Article ; Patients ; Pediatrics ; Renal Insufficiency, Chronic ; Urology ; Vitamin D ; Vitamin D Deficiency - complications ; Vitamin deficiency ; What’s New in Chronic Kidney Disease ; Young Adult</subject><ispartof>Pediatric nephrology (Berlin, West), 2023-08, Vol.38 (8), p.2771-2779</ispartof><rights>The Author(s), under exclusive licence to International Pediatric Nephrology Association 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>2023. The Author(s), under exclusive licence to International Pediatric Nephrology Association.</rights><rights>COPYRIGHT 2023 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c511t-3c1557b3bcc4c2f071864635c9f37218d61709a10201c3ed5d6999aea3efba893</citedby><cites>FETCH-LOGICAL-c511t-3c1557b3bcc4c2f071864635c9f37218d61709a10201c3ed5d6999aea3efba893</cites><orcidid>0000-0003-3638-5179</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00467-023-05903-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00467-023-05903-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36862253$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Karava, Vasiliki</creatorcontrib><creatorcontrib>Dotis, John</creatorcontrib><creatorcontrib>Kondou, Antonia</creatorcontrib><creatorcontrib>Christoforidis, Athanasios</creatorcontrib><creatorcontrib>Taparkou, Anna</creatorcontrib><creatorcontrib>Farmaki, Evangelia</creatorcontrib><creatorcontrib>Economou, Marina</creatorcontrib><creatorcontrib>Printza, Nikoleta</creatorcontrib><title>Fibroblast growth-factor 23 and vitamin D are associated with iron deficiency and anemia in children with chronic kidney disease</title><title>Pediatric nephrology (Berlin, West)</title><addtitle>Pediatr Nephrol</addtitle><addtitle>Pediatr Nephrol</addtitle><description>Background This cross-sectional study investigates the association of fibroblast growth-factor 23 (FGF23) and other bone mineral parameters with iron status and anemia in pediatric chronic kidney disease (CKD). Methods Serum calcium, phosphorus, 25-hydroxyvitamin D (25(OH)D), intact parathormone, c-terminal FGF23, a-Klotho, iron (Fe), ferritin, unsaturated iron-binding capacity, and hemoglobin (Hb) were measured in 53 patients from 5 to 19 years old with GFR &lt; 60 mL/min/1.73 m 2 . Transferrin saturation (TSAT) was calculated. Results Absolute (ferritin ≤ 100 ng/mL, TSAT ≤ 20%) and functional iron deficiency (ferritin &gt; 100 ng/mL, TSAT ≤ 20%) were observed in 32% and 7.5% of patients, respectively. In CKD stages 3–4 (36 patients), lnFGF23 and 25(OH)D were correlated with Fe (rs =  − 0.418, p  = 0.012 and rs = 0.467, p  = 0.005) and TSAT (rs =  − 0.357, p  = 0.035 and rs = 0.487, p  = 0.003) but not to ferritin. In this patient group, lnFGF23 and 25(OH)D were correlated with Hb z -score (rs =  − 0.649, p  &lt; 0.001 and rs = 0.358, p  = 0.035). No correlation was detected between lnKlotho and iron parameters. In CKD stages 3–4, in multivariate backward logistic regression analysis, including bone mineral parameters, CKD stage, patient age, and daily alphacalcidol dose as covariates, lnFGF23 and 25(OH)D were associated with low TSΑΤ (15 patients) (OR 6.348, 95% CI 1.106–36.419, and OR 0.619, 95% CI 0.429–0.894, respectively); lnFGF23 was associated with low Hb (10 patients) (OR 5.747, 95% CI 1.270–26.005); while the association between 25(OH)D and low Hb did not reach statistical significance (OR 0.818, 95% CI 0.637–1.050). Conclusions In pediatric CKD stages 3–4, iron deficiency and anemia are associated with increased FGF23, independently of Klotho. Vitamin D deficiency might contribute to iron deficiency in this population. Graphical abstract A higher resolution version of the Graphical abstract is available as Supplementary information</description><subject>25-Hydroxyvitamin D</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Alfacalcidol</subject><subject>Anemia</subject><subject>Anemia, Iron-Deficiency - diagnosis</subject><subject>Anemia, Iron-Deficiency - etiology</subject><subject>Calcifediol</subject><subject>Calcium (blood)</subject><subject>Child</subject><subject>Child, Preschool</subject><subject>Children</subject><subject>Chronic kidney failure</subject><subject>Complications and side effects</subject><subject>Cross-Sectional Studies</subject><subject>Diseases</subject><subject>Ferritin</subject><subject>Ferritins</subject><subject>Fibroblast growth factor 23</subject><subject>Fibroblast growth factor receptors</subject><subject>Fibroblasts</subject><subject>Fibroblasts - metabolism</subject><subject>Health aspects</subject><subject>Hemoglobin</subject><subject>Hemoglobins - metabolism</subject><subject>Humans</subject><subject>Iron</subject><subject>Iron Deficiencies</subject><subject>Iron deficiency</subject><subject>Kidney diseases</subject><subject>Klotho protein</subject><subject>Medicine</subject><subject>Medicine &amp; Public Health</subject><subject>Minerals - metabolism</subject><subject>Nephrology</subject><subject>Nutrient deficiency</subject><subject>Original Article</subject><subject>Patients</subject><subject>Pediatrics</subject><subject>Renal Insufficiency, Chronic</subject><subject>Urology</subject><subject>Vitamin D</subject><subject>Vitamin D Deficiency - complications</subject><subject>Vitamin deficiency</subject><subject>What’s New in Chronic Kidney Disease</subject><subject>Young Adult</subject><issn>0931-041X</issn><issn>1432-198X</issn><issn>1432-198X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNp9kk9rFTEUxQdR7LP6BVxIQBA3U_NnZpIsS7UqFNwodBcyyZ03qTNJTTItb-dHN-1Ua-UhWVzI_Z3D5XCq6iXBRwRj_i5h3HS8xpTVuJWY1exRtSENozWR4vxxtcGSkRo35PygepbSBcZYtKJ7Wh2wTnSUtmxT_Tx1fQz9pFNG2xiu81gP2uQQEWVIe4uuXNaz8-g90hGQTikYpzNYdO3yiFwMHlkYnHHgze5WoT3MTqOiMaObbAS_smYssDPou7Medsi6BDrB8-rJoKcEL-7mYfXt9MPXk0_12ZePn0-Oz2rTEpJrZkjb8p71xjSGDpgT0TUda40cGKdE2I5wLDXBFBPDwLa2k1Jq0AyGXgvJDqu3q-9lDD8WSFnNLhmYpnJuWJKiXJCOCEFxQV__g16EJfpynaKiaRpGWCvvqa2eQDk_hBy1uTFVx7zsGeeSF6reQ23BQ9RT8CW58v2AP9rDl2dLqGav4M1fghH0lMcUpiW74NNDkK6giSGlCIO6jG7WcacIVjd9UmufVOmTuu2TYkX06i6KpZ_B_pH8LlAB2AqksvJbiPdZ_cf2F97t0xk</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Karava, Vasiliki</creator><creator>Dotis, John</creator><creator>Kondou, Antonia</creator><creator>Christoforidis, Athanasios</creator><creator>Taparkou, Anna</creator><creator>Farmaki, Evangelia</creator><creator>Economou, Marina</creator><creator>Printza, Nikoleta</creator><general>Springer Berlin Heidelberg</general><general>Springer</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QP</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>K9-</scope><scope>K9.</scope><scope>KB0</scope><scope>M0R</scope><scope>M0S</scope><scope>M1P</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-3638-5179</orcidid></search><sort><creationdate>20230801</creationdate><title>Fibroblast growth-factor 23 and vitamin D are associated with iron deficiency and anemia in children with chronic kidney disease</title><author>Karava, Vasiliki ; Dotis, John ; Kondou, Antonia ; Christoforidis, Athanasios ; Taparkou, Anna ; Farmaki, Evangelia ; Economou, Marina ; Printza, Nikoleta</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c511t-3c1557b3bcc4c2f071864635c9f37218d61709a10201c3ed5d6999aea3efba893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>25-Hydroxyvitamin D</topic><topic>Adolescent</topic><topic>Adult</topic><topic>Alfacalcidol</topic><topic>Anemia</topic><topic>Anemia, Iron-Deficiency - diagnosis</topic><topic>Anemia, Iron-Deficiency - etiology</topic><topic>Calcifediol</topic><topic>Calcium (blood)</topic><topic>Child</topic><topic>Child, Preschool</topic><topic>Children</topic><topic>Chronic kidney failure</topic><topic>Complications and side effects</topic><topic>Cross-Sectional Studies</topic><topic>Diseases</topic><topic>Ferritin</topic><topic>Ferritins</topic><topic>Fibroblast growth factor 23</topic><topic>Fibroblast growth factor receptors</topic><topic>Fibroblasts</topic><topic>Fibroblasts - metabolism</topic><topic>Health aspects</topic><topic>Hemoglobin</topic><topic>Hemoglobins - metabolism</topic><topic>Humans</topic><topic>Iron</topic><topic>Iron Deficiencies</topic><topic>Iron deficiency</topic><topic>Kidney diseases</topic><topic>Klotho protein</topic><topic>Medicine</topic><topic>Medicine &amp; Public Health</topic><topic>Minerals - metabolism</topic><topic>Nephrology</topic><topic>Nutrient deficiency</topic><topic>Original Article</topic><topic>Patients</topic><topic>Pediatrics</topic><topic>Renal Insufficiency, Chronic</topic><topic>Urology</topic><topic>Vitamin D</topic><topic>Vitamin D Deficiency - complications</topic><topic>Vitamin deficiency</topic><topic>What’s New in Chronic Kidney Disease</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Karava, Vasiliki</creatorcontrib><creatorcontrib>Dotis, John</creatorcontrib><creatorcontrib>Kondou, Antonia</creatorcontrib><creatorcontrib>Christoforidis, Athanasios</creatorcontrib><creatorcontrib>Taparkou, Anna</creatorcontrib><creatorcontrib>Farmaki, Evangelia</creatorcontrib><creatorcontrib>Economou, Marina</creatorcontrib><creatorcontrib>Printza, Nikoleta</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium &amp; 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Methods Serum calcium, phosphorus, 25-hydroxyvitamin D (25(OH)D), intact parathormone, c-terminal FGF23, a-Klotho, iron (Fe), ferritin, unsaturated iron-binding capacity, and hemoglobin (Hb) were measured in 53 patients from 5 to 19 years old with GFR &lt; 60 mL/min/1.73 m 2 . Transferrin saturation (TSAT) was calculated. Results Absolute (ferritin ≤ 100 ng/mL, TSAT ≤ 20%) and functional iron deficiency (ferritin &gt; 100 ng/mL, TSAT ≤ 20%) were observed in 32% and 7.5% of patients, respectively. In CKD stages 3–4 (36 patients), lnFGF23 and 25(OH)D were correlated with Fe (rs =  − 0.418, p  = 0.012 and rs = 0.467, p  = 0.005) and TSAT (rs =  − 0.357, p  = 0.035 and rs = 0.487, p  = 0.003) but not to ferritin. In this patient group, lnFGF23 and 25(OH)D were correlated with Hb z -score (rs =  − 0.649, p  &lt; 0.001 and rs = 0.358, p  = 0.035). No correlation was detected between lnKlotho and iron parameters. In CKD stages 3–4, in multivariate backward logistic regression analysis, including bone mineral parameters, CKD stage, patient age, and daily alphacalcidol dose as covariates, lnFGF23 and 25(OH)D were associated with low TSΑΤ (15 patients) (OR 6.348, 95% CI 1.106–36.419, and OR 0.619, 95% CI 0.429–0.894, respectively); lnFGF23 was associated with low Hb (10 patients) (OR 5.747, 95% CI 1.270–26.005); while the association between 25(OH)D and low Hb did not reach statistical significance (OR 0.818, 95% CI 0.637–1.050). Conclusions In pediatric CKD stages 3–4, iron deficiency and anemia are associated with increased FGF23, independently of Klotho. Vitamin D deficiency might contribute to iron deficiency in this population. Graphical abstract A higher resolution version of the Graphical abstract is available as Supplementary information</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>36862253</pmid><doi>10.1007/s00467-023-05903-3</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0003-3638-5179</orcidid></addata></record>
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subjects 25-Hydroxyvitamin D
Adolescent
Adult
Alfacalcidol
Anemia
Anemia, Iron-Deficiency - diagnosis
Anemia, Iron-Deficiency - etiology
Calcifediol
Calcium (blood)
Child
Child, Preschool
Children
Chronic kidney failure
Complications and side effects
Cross-Sectional Studies
Diseases
Ferritin
Ferritins
Fibroblast growth factor 23
Fibroblast growth factor receptors
Fibroblasts
Fibroblasts - metabolism
Health aspects
Hemoglobin
Hemoglobins - metabolism
Humans
Iron
Iron Deficiencies
Iron deficiency
Kidney diseases
Klotho protein
Medicine
Medicine & Public Health
Minerals - metabolism
Nephrology
Nutrient deficiency
Original Article
Patients
Pediatrics
Renal Insufficiency, Chronic
Urology
Vitamin D
Vitamin D Deficiency - complications
Vitamin deficiency
What’s New in Chronic Kidney Disease
Young Adult
title Fibroblast growth-factor 23 and vitamin D are associated with iron deficiency and anemia in children with chronic kidney disease
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