scholarly journals Early-Life Iron Deficiency Anemia Alters the Development and Long-Term Expression of Parvalbumin and Perineuronal Nets in the Rat Hippocampus

2013 ◽  
Vol 35 (5) ◽  
pp. 427-436 ◽  
Author(s):  
Liam S.N. Callahan ◽  
Kathryn A. Thibert ◽  
Jane D. Wobken ◽  
Michael K. Georgieff
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Early Life ◽  
Rat Hippocampus ◽  
Deficiency Anemia ◽  
Perineuronal Nets

scholarly journals Dysregulation of Neuronal Genes by Fetal-Neonatal Iron Deficiency Anemia Is Associated with Altered DNA Methylation in the Rat Hippocampus

Nutrients ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1191 ◽  
Author(s):  
Yu-Chin Lien ◽  
David E Condon ◽  
Michael K Georgieff ◽  
Rebecca A Simmons ◽  
Phu V Tran
Keyword(s):  
Dna Methylation ◽  
Iron Deficiency ◽  
Early Life ◽  
Rat Hippocampus ◽  
Epigenetic Mechanism ◽  
Deficiency Anemia ◽  
Gene Dysregulation ◽  
Iron Deficient ◽  
Neuronal Genes

Early-life iron deficiency results in long-term abnormalities in cognitive function and affective behavior in adulthood. In preclinical models, these effects have been associated with long-term dysregulation of key neuronal genes. While limited evidence suggests histone methylation as an epigenetic mechanism underlying gene dysregulation, the role of DNA methylation remains unknown. To determine whether DNA methylation is a potential mechanism by which early-life iron deficiency induces gene dysregulation, we performed whole genome bisulfite sequencing to identify loci with altered DNA methylation in the postnatal day (P) 15 iron-deficient (ID) rat hippocampus, a time point at which the highest level of hippocampal iron deficiency is concurrent with peak iron demand for axonal and dendritic growth. We identified 229 differentially methylated loci and they were mapped within 108 genes. Among them, 63 and 45 genes showed significantly increased and decreased DNA methylation in the P15 ID hippocampus, respectively. To establish a correlation between differentially methylated loci and gene dysregulation, the methylome data were compared to our published P15 hippocampal transcriptome. Both datasets showed alteration of similar functional networks regulating nervous system development and cell-to-cell signaling that are critical for learning and behavior. Collectively, the present findings support a role for DNA methylation in neural gene dysregulation following early-life iron deficiency.

scholarly journals Long-Term Effectiveness of Oral Ferric Maltol vs Intravenous Ferric Carboxymaltose for the Treatment of Iron-Deficiency Anemia in Patients With Inflammatory Bowel Disease: A Randomized Controlled Noninferiority Trial

2021 ◽  
Author(s):  
Stefanie Howaldt ◽  
Eugeni Domènech ◽  
Nicholas Martinez ◽  
Carsten Schmidt ◽  
Bernd Bokemeyer
Keyword(s):  
Inflammatory Bowel Disease ◽  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Primary Endpoint ◽  
Bowel Disease ◽  
Deficiency Anemia ◽  
Ferric Carboxymaltose ◽  
Inflammatory Bowel ◽  
Intent To Treat

Abstract Background Iron-deficiency anemia is common in inflammatory bowel disease, requiring oral or intravenous iron replacement therapy. Treatment with standard oral irons is limited by poor absorption and gastrointestinal toxicity. Ferric maltol is an oral iron designed for improved absorption and tolerability. Methods In this open-label, phase 3b trial (EudraCT 2015-002496-26 and NCT02680756), adults with nonseverely active inflammatory bowel disease and iron-deficiency anemia (hemoglobin, 8.0-11.0/12.0 g/dL [women/men]; ferritin, <30 ng/mL/<100 ng/mL with transferrin saturation <20%) were randomized to oral ferric maltol 30 mg twice daily or intravenous ferric carboxymaltose given according to each center’s standard practice. The primary endpoint was a hemoglobin responder rate (≥2 g/dL increase or normalization) at week 12, with a 20% noninferiority limit in the intent-to-treat and per-protocol populations. Results For the intent-to-treat (ferric maltol, n = 125/ferric carboxymaltose, n = 125) and per-protocol (n = 78/88) analyses, week 12 responder rates were 67% and 68%, respectively, for ferric maltol vs 84% and 85%, respectively, for ferric carboxymaltose. As the confidence intervals crossed the noninferiority margin, the primary endpoint was not met. Mean hemoglobin increases at weeks 12, 24, and 52 were 2.5 vs 3.0 g/dL, 2.9 vs 2.8 g/dL, and 2.7 vs 2.8 g/dL with ferric maltol vs ferric carboxymaltose. Treatment-emergent adverse events occurred in 59% and 36% of patients, respectively, and resulted in treatment discontinuation in 10% and 3% of patients, respectively. Conclusions Ferric maltol achieved clinically relevant increases in hemoglobin but did not show noninferiority vs ferric carboxymaltose at week 12. Both treatments had comparable long-term effectiveness for hemoglobin and ferritin over 52 weeks and were well tolerated.

Ferric Citrate Dosing in Iron Deficiency Anemia in Nondialysis-Dependent Chronic Kidney Disease

2021 ◽  
pp. 1-10
Author(s):  
Pablo E. Pergola ◽  
Diogo Belo ◽  
Paul Crawford ◽  
Moustafa Moustafa ◽  
Wenli Luo ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Ferric Citrate ◽  
Deficiency Anemia ◽  
Open Label ◽  
Starting Dose ◽  
Dosing Regimens

<b><i>Introduction:</i></b> Ferric citrate (FC) is indicated as an oral iron replacement for iron deficiency anemia in adult patients with chronic kidney disease (CKD) not on dialysis. The recommended starting dose is one 1-g tablet three times daily (TID). This study investigated long-term efficacy and safety of different FC dosing regimens for treating anemia in nondialysis-dependent CKD (NDD-CKD). <b><i>Methods:</i></b> In this phase 4, randomized, open-label, multicenter study, patients with anemia with NDD-CKD (estimated glomerular filtration rate, ≥20 mL/min and &#x3c;60 mL/min) were randomized 1:1 to one FC tablet (1-g equivalent to 210 mg ferric iron) TID (3 g/day) or 2 tablets twice daily (BID; 4 g/day). At week 12, dosage was increased to 2 tablets TID (6 g/day) or 3 tablets BID (6 g/day) in patients whose hemoglobin (Hb) levels increased &#x3c;0.5 g/dL or were &#x3c;10 g/dL. Primary endpoint was mean change in Hb from baseline to week 24. <b><i>Results:</i></b> Of 484 patients screened, 206 were randomized and 205 received FC. Mean (standard deviation) changes from baseline in Hb at week 24 were 0.77 (0.84) g/dL with FC TID 3 g/day and 0.70 (0.98) g/dL with FC BID 4 g/day. <b><i>Discussion/Conclusions:</i></b> FC administered BID and TID for 48 weeks was safe and effective for treating anemia in this population, supporting potentially increased dosing flexibility.

scholarly journals Idiopathic intracranial hypertension presenting as iron deficiency anemia: a case report

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Peng Yong Sim ◽  
Priyal Taribagil ◽  
Ione O. C. Woollacott ◽  
Safina Rashid ◽  
Desmond P. Kidd
Keyword(s):  
Case Report ◽  
Iron Deficiency ◽  
Intracranial Hypertension ◽  
Iron Deficiency Anemia ◽  
Idiopathic Intracranial Hypertension ◽  
Deficiency Anemia ◽  
Visual Deficits ◽  
Fluid Analysis ◽  
Optic Disc Swelling

Abstract Background The presentation of idiopathic intracranial hypertension (IIH) in association with iron deficiency anemia (IDA) is rare. Case presentation This case report depicts the unusual case of a 31-year-old woman of mixed Jamaican and English heritage with IIH who presented initially as IDA in the context of menorrhagia. Subsequent ophthalmic review, lumbar puncture, cerebrospinal fluid analysis and neuroimaging studies revealed severe bilateral optic disc swelling and raised intracranial pressure in keeping with IIH. Prompt treatment of IDA with blood transfusion and orally administered iron supplements, in addition to medical treatment for IIH, contributed to significant improvement of symptoms and prevented long-term visual deficits. Conclusion The possibility of IDA, albeit rare, should always be considered and investigated appropriately in all patients with IIH, as the treatment of the anemia alone may be sight-saving.

scholarly journals Long-term neuroendocrine effects of iron-deficiency anemia in infancy

2012 ◽  
Vol 71 (6) ◽  
pp. 707-712 ◽  
Author(s):  
Barbara T. Felt ◽  
Patricio Peirano ◽  
Cecilia Algarín ◽  
Rodrigo Chamorro ◽  
Teresa Sir ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Deficiency Anemia

Long-Term Follow-Up and Predictive Factors of Recurrence of Anemia in a Cohort of 102 Very Elderly Patients Explored for Iron Deficiency Anemia

2007 ◽  
Vol 65 (5) ◽  
pp. AB270
Author(s):  
Stéphane Nahon ◽  
Pierre Lahmek ◽  
Francine Barclay ◽  
Gilles Macaigne ◽  
Cécile Poupardin ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Elderly Patients ◽  
Iron Deficiency Anemia ◽  
Predictive Factors ◽  
Deficiency Anemia ◽  
Very Elderly ◽  
Long Term Follow Up
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