Use of a Probiotic to Enhance Iron Absorption in a Randomized Trial of Pediatric Patients Presenting with Iron Deficiency

2019 ◽  
Vol 207 ◽  
pp. 192-197.e1 ◽  
Author(s):  
Gerald M. Rosen ◽  
Sue Morrissette ◽  
Amy Larson ◽  
Pam Stading ◽  
Kristen H. Griffin ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Randomized Trial ◽  
Pediatric Patients ◽  
Iron Absorption

scholarly journals Reply: Intravenous Ferumoxytol in Pediatric Patients With Iron-Deficiency Anemia

2017 ◽  
Vol 51 (12) ◽  
pp. 1146-1146
Author(s):  
Nabil E. Hassan
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Pediatric Patients ◽  
Iron Absorption ◽  
Deficiency Anemia

Iron Deficiency in children is common problem. Its mechanism could be nutritional or due to lack of iron absorption. Several conditions are associated with IDA. Presence of inflammation further complicate attempts to make a definitive diagnoses or accurately quantify reponse to therapy.

scholarly journals Changes in Plasma Glial Fibrillary Acidic Protein in Children Receiving Sevoflurane Anesthesia: A Preliminary Randomized Trial

2021 ◽  
Vol 10 (4) ◽  
pp. 662
Author(s):  
Eun-Hee Kim ◽  
Young-Eun Jang ◽  
Sang-Hwan Ji ◽  
Ji-Hyun Lee ◽  
Sung-Ae Cho ◽  
...  
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Randomized Trial ◽  
Protein Concentration ◽  
Pediatric Patients ◽  
Neuronal Injury ◽  
Acidic Protein ◽  
Anesthesia Induction ◽  
Sevoflurane Anesthesia ◽  
Control Groups ◽  
Over Time

We investigated changes in plasma glial fibrillary acidic protein concentration during sevoflurane anesthesia induction in children < 3 years old and determined the effect of co-administering dexmedetomidine. This preliminary randomized trial included 60 pediatric patients who received sevoflurane anesthesia for >3 h. Patients were assigned to dexmedetomidine or control groups at a 1:1 ratio. The primary outcome was changes in plasma glial fibrillary acidic protein concentration of dexmedetomidine and control groups over time. Fifty-five patients were included in the final analysis. The median (interquartile range (IQR)) of the plasma glial fibrillary acidic protein level was 387.7 (298.9–510.8) pg·mL−1 immediately after anesthetic induction, 302.6 (250.9–412.5) pg·mL−1 at 30 min, and 321.9 (233.8–576.2) pg·mL−1 at 180 min after the first sample. These values did not change over time (p = 0.759). However, plasma glial fibrillary acidic protein increased after 180 min of infusion of dexmedetomidine compared with values at 30 min infusion (p = 0.04, mean difference and 95% confidence interval of 221.6 and 2.2 to 441.0 pg·mL−1). In conclusion, three hours of sevoflurane anesthesia in pediatric patients < 3 years old did not provoke neuronal injury assessed by the plasma biomarker. Further studies regarding the effect of prolonged dexmedetomidine infusion on anesthetic neuronal injury are required.

Maturation, iron deficiency, and ligands in enteric radioiron transport in vitro

1963 ◽  
Vol 204 (1) ◽  
pp. 171-175 ◽  
Author(s):  
W. S. Ruliffson ◽  
J. M. Hopping
Keyword(s):  
Ascorbic Acid ◽  
Iron Deficiency ◽  
Iron Absorption ◽  
Deficiency Anemia ◽  
Anaerobic Incubation ◽  
Reverse Effect ◽  
Factors Affecting ◽  
Everted Gut Sac

The effects in rats, of age, iron-deficiency anemia, and ascorbic acid, citrate, fluoride, and ethylenediaminetetraacetate (EDTA) on enteric radioiron transport were studied in vitro by an everted gut-sac technique. Sacs from young animals transported more than those from older ones. Proximal jejunal sacs from anemic animals transported more than similar sacs from nonanemic rats, but the reverse effect appeared in sacs formed from proximal duodenum. When added to media containing ascorbic acid or citrate, fluoride depressed transport as did anaerobic incubation in the presence of ascorbic acid. Anaerobic incubation in the presence of EDTA appeared to permit elevated transport. Ascorbic acid, citrate, and EDTA all enhanced the level of Fe59 appearing in serosal media. These results appear to agree with previously established in vivo phenomena and tend to validate the in vitro method as one of promise for further studies of factors affecting iron absorption and of the mechanism of iron absorption.

scholarly journals IRON ABSORPTION AND RESPONSE TO ORAL IRON THERAPY IN IRON DEFICIENCY ANEMIA ASSOCIATED TO ASYMPTOMATIC GIARDIASIS.

1993 ◽  
Vol 33 (6) ◽  
pp. 661-661
Author(s):  
Helena U Suzuki ◽  
Mauro B Morais ◽  
Jose N Corral ◽  
Ulisses Fagundes-Neto ◽  
Nelson L Machado
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Iron Absorption ◽  
Oral Iron ◽  
Iron Therapy ◽  
Deficiency Anemia ◽  
Oral Iron Therapy

984 Suppression of LPS and IL-6 Signaling By Iron Deficiency Alters Expression of the Intestinal Iron Absorption Regulator Hepcidin

2008 ◽  
Vol 134 (4) ◽  
pp. A-147
Author(s):  
Deepak Darshan ◽  
David M. Frazer ◽  
Sarah J. Wilkins ◽  
Gregory J. Anderson
Keyword(s):  
Iron Deficiency ◽  
Iron Absorption ◽  
Intestinal Iron Absorption

Iron Amino Acid Chelates

2004 ◽  
Vol 74 (6) ◽  
pp. 435-443 ◽  
Author(s):  
Hertrampf ◽  
Olivares
Keyword(s):  
Amino Acid ◽  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Ferrous Sulfate ◽  
Iron Absorption ◽  
Iron Status ◽  
Deficiency Anemia ◽  
Efficacy Trials ◽  
Food Matrices ◽  
The Cost

Iron amino acid chelates, such as iron glycinate chelates, have been developed to be used as food fortificants and therapeutic agents in the prevention and treatment of iron deficiency anemia. Ferrous bis-glycine chelate (FeBC), ferric tris-glycine chelate, ferric glycinate, and ferrous bis-glycinate hydrochloride are available commercially. FeBC is the most studied and used form. Iron absorption from FeBC is affected by enhancers and inhibitors of iron absorption, but to a lesser extent than ferrous sulfate. Its absorption is regulated by iron stores. FeBC is better absorbed from milk, wheat, whole maize flour, and precooked corn flour than is ferrous sulfate. Supplementation trials have demonstrated that FeBC is efficacious in treating iron deficiency anemia. Consumption of FeBC-fortified liquid milk, dairy products, wheat rolls, and multi-nutrient beverages is associated with an improvement of iron status. The main limitations to the widespread use of FeBC in national fortification programs are the cost and the potential for promoting organoleptic changes in some food matrices. Additional research is required to establish the bioavailability of FeBC in different food matrices. Other amino acid chelates should also be evaluated. Finally there is an urgent need for more rigorous efficacy trials designed to define the relative merits of amino acid chelates when compared with bioavailable iron salts such as ferrous sulfate and ferrous fumarate and to determine appropriate fortification levels

Intestinal expression of genes involved in iron absorption in humans

2002 ◽  
Vol 282 (4) ◽  
pp. G598-G607 ◽  
Author(s):  
Andreas Rolfs ◽  
Herbert L. Bonkovsky ◽  
James G. Kohlroser ◽  
Kristina McNeal ◽  
Ashish Sharma ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Iron Absorption ◽  
Genetic Disorders ◽  
Hereditary Hemochromatosis ◽  
Transferrin Saturation ◽  
High Serum ◽  
Deficiency Anemia ◽  
Dependent Manner ◽  
Expression Levels

Hereditary hemochromatosis (HHC) is one of the most frequent genetic disorders in humans. In healthy individuals, absorption of iron in the intestine is tightly regulated by cells with the highest iron demand, in particular erythroid precursors. Cloning of intestinal iron transporter proteins provided new insight into mechanisms and regulation of intestinal iron absorption. The aim of this study was to assess whether, in humans, the two transporters are regulated in an iron-dependent manner and whether this regulation is disturbed in HHC. Using quantitative PCR, we measured mRNA expression of divalent cation transporter 1 (DCT1), iron-regulated gene 1 (IREG1), and hephaestin in duodenal biopsy samples of individuals with normal iron levels, iron-deficiency anemia, or iron overload. In controls, we found inverse relationships between the DCT1 splice form containing an iron-responsive element (IRE) and blood hemoglobin, serum transferrin saturation, or ferritin. Subjects with iron-deficiency anemia showed a significant increase in expression of the spliced form, DCT1(IRE) mRNA. Similarly, in subjects homozygous for the C282Y HFE mutation, DCT1(IRE) expression levels remained high despite high serum iron saturation. Furthermore, a significantly increased IREG1 expression was observed. Hephaestin did not exhibit a similar iron-dependent regulation. Our data show that expression levels of human DCT1 mRNA, and to a lesser extent IREG1 mRNA, are regulated in an iron-dependent manner, whereas mRNA of hephaestin is not affected. The lack of appropriate downregulation of apical and basolateral iron transporters in duodenum likely leads to excessive iron absorption in persons with HHC.

scholarly journals Mutation of the gastric hydrogen-potassium ATPase alpha subunit causes iron-deficiency anemia in mice

Blood ◽  
2011 ◽  
Vol 118 (24) ◽  
pp. 6418-6425 ◽  
Author(s):  
Lara Krieg ◽  
Oren Milstein ◽  
Philippe Krebs ◽  
Yu Xia ◽  
Bruce Beutler ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Iron Absorption ◽  
Osmotic Fragility ◽  
Microcytic Anemia ◽  
Deficiency Anemia ◽  
Α Subunit ◽  
Hypochromic Microcytic Anemia ◽  
Gastric Proton Pump ◽  
Potassium Atpase

Abstract Iron is an essential component of heme and hemoglobin, and therefore restriction of iron availability directly limits erythropoiesis. In the present study, we report a defect in iron absorption that results in iron-deficiency anemia, as revealed by an N-ethyl-N-nitrosourea–induced mouse phenotype called sublytic. Homozygous sublytic mice develop hypochromic microcytic anemia with reduced osmotic fragility of RBCs. The sublytic phenotype stems from impaired gastrointestinal iron absorption caused by a point mutation of the gastric hydrogen-potassium ATPase α subunit encoded by Atp4a, which results in achlorhydria. The anemia of sublytic homozygotes can be corrected by feeding with a high-iron diet or by parenteral injection of iron dextran; rescue can also be achieved by providing acidified drinking water to sublytic homozygotes. These findings establish the necessity of the gastric proton pump for iron absorption and effective erythropoiesis.

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