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  • Title: Effect of Helicobacter pylori infection and low-dose aspirin use on iron stores in the elderly.
    Author: Kaffes A, Cullen J, Mitchell H, Katelaris PH.
    Journal: J Gastroenterol Hepatol; 2003 Sep; 18(9):1024-8. PubMed ID: 12911657.
    Abstract:
    BACKGROUND AND AIMS: Helicobacter pylori infection has been associated with lower ferritin levels in some adult populations, but subsets of potentially higher risk subjects, such as the elderly have not been examined. The aim of the present study was to determine the impact of H. pylori infection and low-dose aspirin use on iron stores in a well elderly population. METHODS: Consecutive subjects aged 65 years or older attending day care facilities were studied. Each subject was assisted in completing a medical questionnaire. Serum ferritin, hemoglobin, mean corpuscular volumes (MCV) and IgG antibodies (ELISA) against H. pylori were measured. RESULTS: In 220 subjects (age 75 +/- 8 years), 42% were H. pylori seropositive (male 41%, female 44%). The median (IQR) ferritin level (ug/L) was higher in men 149 (89-280) than women 94 (54-161), p < 0.002. The ferritin levels were not different in H. pylori positive males 151 (105-283) compared with H. pylori negative males 145 (72-249), or H. pylori positive females 93 (60-142) compared with H. pylori negative females 97 (45-149). This relationship was not altered when controlled for non-steroidal anti-inflammatory agents (NSAID) use (9% of subjects), alcohol or dietary iron intake. Low-dose aspirin use was common (28%), but did not have an independent impact on iron stores: male users 181 (95-248), non-users 145 (86-284); female users 92 (43-162), non-users 95 (62-163). However, in female aspirin users, H. pylori infection was associated with significantly lower ferritin levels: 65 (43-112) compared with uninfected subjects 103 (41-180), p < 0.04. CONCLUSIONS: In this well elderly population, the combination of H. pylori infection and low-dose aspirin use was associated with significantly lower serum ferritin concentrations in females. This difference supports the observation that H. pylori, even in asymptomatic subjects, may be a stressor of iron stores.
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