Elevated iron stores are associated with HIV disease severity and mortality among postpartum women in Zimbabwe
Identifieur interne : 000B60 ( Main/Exploration ); précédent : 000B59; suivant : 000B61Elevated iron stores are associated with HIV disease severity and mortality among postpartum women in Zimbabwe
Auteurs : R. Rawat [États-Unis] ; Jh Humphrey [Zimbabwe, États-Unis] ; R. Ntozini [Zimbabwe] ; K. Mutasa [Zimbabwe] ; Pj Iliff [Zimbabwe] ; Rj Stoltzfus [États-Unis]Source :
- Public Health Nutrition [ 1368-9800 ] ; 2009.
Abstract
AbstractObjectives The relationship between Fe status and HIV infection is complex and poorly understood. While anaemia is a major complication of HIV infection, higher Fe stores may be associated with disease progression. There is limited and conflicting data available from Africa. Design Cross-sectional and prospective cohort study. Setting, subjects and methods We examined the association between postpartum Fe status (Hb, serum ferritin (SF) and transferrin receptor (TfR)) and viral load (VL) and HIV-related mortality in 643 HIV-positive Zimbabwean women over a period of 12 months. Results In non-anaemic women a log10 increase in SF was associated with a 2·3-fold increase in VL (P = 0·019); this association was absent in anaemic women. In prospective analyses, a log10 increase in SF was associated with a 4-fold increase in mortality by 12 months (P = 0·002). Hb was negatively associated with VL (P = 0·001) and mortality (P = 0·047). The adverse associations between SF and both VL and mortality were found at SF concentrations >45 μg/l (P < 0·05). Controlling for α1 acid glycoprotein, a marker of inflammation, attenuated the association between both SF and VL and mortality, but these remained significant. Conclusions These results are consistent with the hypothesis that high Fe stores have adverse consequences in HIV infection. If adverse consequences are real, our data suggest that they occur at SF concentrations exceeding those consistent with adequate Fe nutriture.
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DOI: 10.1017/S136898000800390X
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Ntozini</name><affiliation wicri:level="1"><country xml:lang="fr">Zimbabwe</country><wicri:regionArea>ZVITAMBO Study Team, Harare</wicri:regionArea><wicri:noRegion>Harare</wicri:noRegion></affiliation></author><author><name sortKey="Mutasa, K" sort="Mutasa, K" uniqKey="Mutasa K" first="K" last="Mutasa">K. Mutasa</name><affiliation wicri:level="1"><country xml:lang="fr">Zimbabwe</country><wicri:regionArea>ZVITAMBO Study Team, Harare</wicri:regionArea><wicri:noRegion>Harare</wicri:noRegion></affiliation></author><author><name sortKey="Iliff, Pj" sort="Iliff, Pj" uniqKey="Iliff P" first="Pj" last="Iliff">Pj Iliff</name><affiliation wicri:level="1"><country xml:lang="fr">Zimbabwe</country><wicri:regionArea>ZVITAMBO Study Team, Harare</wicri:regionArea><wicri:noRegion>Harare</wicri:noRegion></affiliation></author><author><name sortKey="Stoltzfus, Rj" sort="Stoltzfus, Rj" uniqKey="Stoltzfus R" first="Rj" last="Stoltzfus">Rj Stoltzfus</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Cornell University, Division of Nutritional Sciences, Ithaca, NY</wicri:regionArea><orgName type="university">Université Cornell</orgName><placeName><settlement type="city">Ithaca (New York)</settlement><region type="state">État de New York</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Public Health Nutrition</title><title level="j" type="abbrev">Public Health Nutr.</title><idno type="ISSN">1368-9800</idno><idno type="eISSN">1475-2727</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><date type="published" when="2009">2009</date><biblScope unit="volume">12</biblScope><biblScope unit="issue">9</biblScope><biblScope unit="page" from="1321">1321</biblScope><biblScope unit="page" to="1329">1329</biblScope></imprint><idno type="ISSN">1368-9800</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1368-9800</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">AbstractObjectives The relationship between Fe status and HIV infection is complex and poorly understood. While anaemia is a major complication of HIV infection, higher Fe stores may be associated with disease progression. There is limited and conflicting data available from Africa. Design Cross-sectional and prospective cohort study. Setting, subjects and methods We examined the association between postpartum Fe status (Hb, serum ferritin (SF) and transferrin receptor (TfR)) and viral load (VL) and HIV-related mortality in 643 HIV-positive Zimbabwean women over a period of 12 months. Results In non-anaemic women a log10 increase in SF was associated with a 2·3-fold increase in VL (P = 0·019); this association was absent in anaemic women. In prospective analyses, a log10 increase in SF was associated with a 4-fold increase in mortality by 12 months (P = 0·002). Hb was negatively associated with VL (P = 0·001) and mortality (P = 0·047). The adverse associations between SF and both VL and mortality were found at SF concentrations >45 μg/l (P < 0·05). Controlling for α1 acid glycoprotein, a marker of inflammation, attenuated the association between both SF and VL and mortality, but these remained significant. Conclusions These results are consistent with the hypothesis that high Fe stores have adverse consequences in HIV infection. If adverse consequences are real, our data suggest that they occur at SF concentrations exceeding those consistent with adequate Fe nutriture.</div></front></TEI><affiliations><list><country><li>Zimbabwe</li><li>États-Unis</li></country><region><li>État de New York</li></region><settlement><li>Ithaca (New York)</li></settlement><orgName><li>Université Cornell</li></orgName></list><tree><country name="États-Unis"><noRegion><name sortKey="Rawat, R" sort="Rawat, R" uniqKey="Rawat R" first="R" last="Rawat">R. 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