Железодефицитные новости

[Dr.Vad]

У пациентов на омепразоле или др. празолах хуже корректируется ЖД анемия или железодефицит: нужно или увеличивать дозу, или повышать длительность лечения, или в/в введение железа:

Am J Ther. 2010 Dec 3.
Suboptimal Response to Ferrous Sulfate in Iron-Deficient Patients Taking Omeprazole.

Ajmera AV, Shastri GS, Gajera MJ, Judge TA.

Iron deficiency anemia is commonly encountered in outpatient practice. Gastric acid is one of the important factors for optimum absorption of iron. Proton pump inhibitors are very commonly prescribed medications. One of the debated effects of proton pump inhibitors is on oral iron absorption. Their effect on absorption of oral iron supplementation in iron-deficient patients has not been studied. At the Cooper Hematology Outpatient office, we reviewed charts of iron-deficient anemic patients who were on omeprazole for the last 4 years. Fifty patients having no apparent ongoing blood loss, having other causes of anemia especially that of chronic diseases ruled out, and on omeprazole while starting ferrous sulfate therapy for iron deficiency were selected for chart review. The iron-study results at the start of oral ferrous sulfate therapy and at 3 months follow-up were compared to evaluate the response of ferrous sulfate. The mean hemoglobin change was 0.8 ± 1.2 g/L. The mean change in ferrtin values was 10.2 ± 7.8 μg/L. Only 16% of the patients had a normal response to hemoglobin levels (rise of >2 g/dL), and only 40% had a normal response to ferritin levels (rise of >20 μg/dL). The average age of patients having a suboptimal response to both hemoglobin and ferritin was significantly higher compared with that of the patients with an optimal response. Omeprazole and possibly all proton pump inhibitors decrease the absorption of oral iron supplementation. Iron-deficient patients taking proton pump inhibitors may have to be treated with high dose iron therapy for a longer duration or with intravenous iron therapy.

[Dr.Vad]

Низкий ферритин после родов может предсказывать повышенный риск развития послеродовой депрессии: этот риск в 3.7 выше, если ферритин менее 7.3:

J Affect Disord. 2010 Dec 2.

An association between plasma ferritin concentrations measured 48h after delivery and postpartum depression.

Albacar G, Sans T, Martín-Santos R, García-Esteve L, Guillamat R, Sanjuan J, Cañellas F, Gratacòs M, Cavalle P, Arija V, Gaviria A, Gutiérrez-Zotes A, Vilella E.

Hospital Psiquiàtric Universitari Institut Pere Mata, IISPV, Universitat Rovira i Virgili, Reus, Spain.

CONTEXT: Iron deficiency is the most common nutritional problem experienced by childbearing women, and postpartum depression (PPD) is the most common psychiatric disorder seen during the first year after delivery. The possible link between iron deficiency and PPD is not clear.

OBJECTIVE: To evaluate whether iron status 48h after delivery was associated with PPD. Our hypothesis was that iron deficiency would be associated with PPD.

DESIGN: This was a prospective cohort study of depression-free women studied in the postpartum period.

SETTING: Women who give birth at obstetric units in several general hospitals in Spain.

PARTICIPANTS: A subsample of 729 women was included in the present study after exclusion of women with high C-reactive protein (CRP) and other diseases known to interfere with iron metabolism.

MAIN OUTCOME MEASURES: We evaluated depressive symptoms at 48h, 8weeks and 32weeks postpartum and used a diagnostic interview to confirm the diagnosis of major depression. A blood sample obtained 48h after delivery was used to measure the following iron storage parameters: ferritin, transferrin (Tf), free iron and transferrin saturation (TfS) and the inflammatory marker CRP.

RESULTS: Overall, the women in the study had low iron concentrations (8.8±6.9μmol/L) and low TfS (12.6±9.6%) but normal ferritin and Tf concentrations. A total of 65 women (9%) developed PPD during the 32week postpartum period; these women also had a lower ferritin concentration (15.4±12.7μg/L vs. 21.6±13.5μg/L, P=0.002). A strong association between ferritin and PPD was observed (odds ratio=3.73, 95% CI: 1.84-7.56; P=0.0001 for ferritin cutoff value of 7.26μg/L). In our study, ferritin concentrations have a high specificity but low sensitivity in predicting PPD.

CONCLUSIONS: These findings support the role of iron in the etiology of PPD and the use of ferritin as a marker of iron deficiency in the postpartum period. We believe that this topic deserves further investigation.

[Dr.Vad]

Еще одна статья, показывающая, что именно двухвалентное (а не трехвалентное) железо лучше всасывается у людей с железодефицитом и именно двухвалентное железо обладает б0льшей эффективностью при лечении железодефицита:

Br J Nutr. 2011 Apr;105(8):1245-50.
Iron deficiency up-regulates iron absorption from ferrous sulphate but not ferric pyrophosphate and consequently food fortification with ferrous sulphate has relatively greater efficacy in iron-deficient individuals.
Zimmermann MB, Biebinger R, Egli I, Zeder C, Hurrell RF.
SourceLaboratory for Human Nutrition, Institute of Food Science and Nutrition, Swiss Federal Institute of Technology (ETH) Zurich, Schmelzbergstrasse 7, LFV E19, CH-8092 Zurich, Switzerland.
AbstractFe absorption from water-soluble forms of Fe is inversely proportional to Fe status in humans. Whether this is true for poorly soluble Fe compounds is uncertain. Our objectives were therefore (1) to compare the up-regulation of Fe absorption at low Fe status from ferrous sulphate (FS) and ferric pyrophosphate (FPP) and (2) to compare the efficacy of FS with FPP in a fortification trial to increase body Fe stores in Fe-deficient children v. Fe-sufficient children. Using stable isotopes in test meals in young women (n 49) selected for low and high Fe status, we compared the absorption of FPP with FS. We analysed data from previous efficacy trials in children (n 258) to determine whether Fe status at baseline predicted response to FS v. FPP as salt fortificants. Plasma ferritin was a strong negative predictor of Fe bioavailability from FS (P < 0·0001) but not from FPP. In the efficacy trials, body Fe at baseline was a negative predictor of the change in body Fe for both FPP and FS, but the effect was significantly greater with FS (P < 0·01). Because Fe deficiency up-regulates Fe absorption from FS but not from FPP, food fortification with FS may have relatively greater impact in Fe-deficient children. Thus, more soluble Fe compounds not only demonstrate better overall absorption and can be used at lower fortification levels, but they also have the added advantage that, because their absorption is up-regulated in Fe deficiency, they innately 'target' Fe-deficient individuals in a population.

[Dr.Vad]

Еще одно исследование из Израиля подтверждает б0льшую эффективность, но худшую переносимость двухвалентного железа у детей первого года жизни (на фоне приема 3-валентного железа анемия может сохраняться у 20% (!) детей):


J Pediatr Hematol Oncol. 2010 Nov;32(8):585-8.
Iron polymaltose versus ferrous gluconate in the prevention of iron deficiency anemia of infancy.
Jaber L, Rigler S, Taya A, Tebi F, Baloum M, Yaniv I, Haj Yehia M, Tamary H.
SourceNeurology Clinic, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.
AbstractWe prospectively compared the efficacy and safety of iron deficiency anemia prophylaxis with iron gluconate (IG) or iron polymaltose complex (IPC) in healthy infants attending a community pediatric center. Participants were randomly assigned to receive one of the test drugs from age 4 to 6 months to age 12 months. Parents/guardians were given extensive information on iron-rich diets and anemia prevention. Main outcome measures were blood levels of hemoglobin, hematocrit, mean corpuscular volume, red blood cell distribution width, and serum iron, ferritin, and transferrin, in addition to adverse effects. One hundred five children completed the study: 53 in the IG group and 52 in the IPC group Mean hemoglobin levels at study end were significantly higher in the IG group (12.04±0.09 g/dL vs. 11.68±0.11, P<0.014). A hemoglobin level <11 g/dL was detected in 3 infants of the IG group, and in 10 infants of the IPC group (P<0.04). Adverse effects (spitting, vomiting, diarrhea, constipation, discolored teeth) were significantly more common in the IG group (47% vs. 25%, P>0.025). In conclusion, both oral IG and IPC prevent iron deficiency anemia in infants. Iron gluconate seems to be more effective but less tolerable.

[Dr.Vad]

У женщин с дефицитом железа (ферритин менее 20) до беременности назначение препарата железа во время беременности приводило к улучшению веса новорожденного:

Early Hum Dev. 2011 Jun 29.
Pre-pregnancy iron reserves, iron supplementation during pregnancy, and birth weight.
Aranda N, Ribot B, Garcia E, Viteri FE, Arija V.
SourceIISPV, Departament de Ciències Mèdiques Bàsiques, Universitat Rovira i Virgili (URV), Spain.

BACKGROUND: Early iron supplementation in women with sufficient reserves could provoke iron excess resulting in haemoconcentration and low infant birth weight (IBW).

AIM: To clarify the influence of early iron supplementation on maternal iron status and the IBW, taking into account pre-pregnancy iron deposits.

STUDY DESIGN: Longitudinal, prospective study.

SUBJECTS: Healthy women volunteers (n=82) intending to become pregnant.

OUTCOME MEASURES: Women were grouped as a function of their pre-pregnancy (low or present) iron stores (serum ferritin (SF)<or≥20μg/L) and time of commencement of iron supplementation during pregnancy; "early" (<20weeks) or "late" (≥20weeks). Obstetric and clinical history, smoking habit, dietary intake and iron biochemical parameters were obtained at pre-pregnancy as well as at 1st, 2nd and 3rd trimesters. Haemoglobin, MCV, SF and transferrin saturation (TS) were measured.

RESULTS: Overall, 36% of the women had low iron stores at pre-pregnancy. The mean early supplementation with iron was 140.7mg/d and the mean of late supplementation was 99.01mg/d. Early supplementation improves the biochemical status of the mother and does not provoke a significant increase in haemoconcentration relative to late supplementation independently of the pre-pregnancy iron levels. Supplemental iron had a positive effect on birth weight among women with pre-pregnancy low iron stores (β=4.37; SE=1.8; p=0.038) and did not affect birth weight among women with present iron stores (β=-0.008; SE=3.03; p=0.998).

CONCLUSION: Early iron supplementation with doses ~100mg/d improves the biochemical status of the mother independently of her pre-pregnancy iron status. Supplementation with iron improves newborn birth weight in those women who start pregnancy with iron deficiency, and makes no significant difference to those women who are not iron deficient.

[Dr.Vad]

Впервые хорватские коллеги обнаружили ассоциативную связь между менструальной мигренью и железодефицитной анемией:

Acta Clin Croat. 2010 Dec;49(4):389-94.
Is iron deficiency anemia related to menstrual migraine? Post hoc analysis of an observational study evaluating clinical characteristics of patients with menstrual migraine.
Vuković-Cvetković V, Plavec D, Lovrencić-Huzjan A, Galinović I, Serić V, Demarin V.
University Department of Neurology, Sestre milosrdnice University Hospital, Zagreb, Croatia.

The aim of this study was to determine the relative prevalence and clinical characteristics of patients with pure menstrual migraine (PMM) and menstrually related migraine (MRM), and to compare them with the women free of it in an outpatient clinic-based population. Adult menstruating women with ICHD-2 migraine were included. Demographic data were obtained by verbal report. Study women were asked to keep a headache diary for 6 months, in which they recorded information on headache characteristics, medication use and presence of menses. Iron deficiency anemia was considered to be present if the patient had received therapy for iron deficiency anemia or laboratory tests indicated low iron and/or hemoglobin levels (within one year). A total of 289 women were included, 52 (18.0%) with PMM and 116 (40.1%) with MRM, whereas 121 (41.9%) women had not observed any relationship between migraine and their menstrual cycle (non-MM). Duration of migraine attacks was longer in PMM/MRM patients (P < 0.0001). No significant difference was observed according to other migraine-associated symptoms. Women with PMM/ MRM took significantly more tryptans (P < 0.0001) and iron deficiency anemia was significantly more common in women with PMM/MRM (P = 0.008). In conclusion, this study supported earlier findings that PMM/MRM has similar clinical characteristics as non-MM, except for longer duration. In addition, iron deficiency anemia is more common in women with PMM/MRM, which may be an underlying mechanism aggravating migraine attacks.

[Dr.Vad]

первая публикация из Израиля, показывающая, что у детей 3-7 лет с кариесом выше риск обнаружения и железодефицита (у 80% ферритин менее 24) и железодефицитной анемии (у 65% гемоглобин менее 120):

Acta Paediatr. 2011 Aug 24.
The association of childhood iron deficiency anemia and severe dental caries.
Shaoul R, Gaitini L, Kharouba J, Darawshi G, Maor I, Somri M.