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© 1993 Oxford University Press
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Serum Beta-Carotene and Antioxidant Micronutrients in Children with Cancer


D
E-MANESME*
* Unité de recherches en Hépatologie pédiatrique INSERM UO56 and Department of Pediatrics, Centre Hospitalier de Bicêtre 78 rue du Général Leclerc, F-94275 Bicêtre Cedex, France
** Laboratory of Public Health, University of Medicine 2 bis Boulevard Tonnellé. F-37044 Tours Cedex, France
Statistical Unit, Télécom Paris 46 rue Barrault, F-75634 Paris Cedex 13, France
Laboratory of Biochemistry C, Centre Hospitalier Universitaire F-38043 Grenoble Cedex, France
§ Department of Pediatrics II. Hôpital d'enfants, Centre Hospitalier de Nancy rue du Morvan F-54511 Vand
uvre Cedex, France
| Department of Pediatric Hematology, Hôpital St Louis 1 rue Cl. Vellefaux, F-75010 Paris, France
¶ Department of Clinical Nutrition F Hoffman - La Roche CH-4002 Basel, Switzerland
Reprint requests to: Dr. D Malvy
Serum antioxidant vitamins A (retinol) and E (
-tocopherol), ß-carotene, zinc and selenium for 418 children with newly diagnosed malignancy were compared with those of 632 cancer-free controls. Incident cancer cases and controls were 116 years old and recruited in 19861989. Age- and sex-adjusted serum concentrations of retinol, ß-carotene and
-tocopherol were significantly inversely associated with cancer. In similar models, the odds ratio (OR) comparing the highest with the lowest quintile was 2.06 (95% confidence interval [CI] 1.403.02) for retinol, 3.87 (95% CI:2.545.90) for ß-carotene, 2.15 (95% CI:1.483.10) for
-tocopherol, 1.29 (95% CI:0.752.23) for selenium, and 1.94 (95% CI:1.172.23) for zinc. The cancer sites that were associated with serum ß-carotene were, in general, leukaemia, lymphoma, central nervous system, bone and renal tumours. Moreover, leukaemia was associated with low mean serum levels of retinol, selenium and zinc. Subjects with lymphoma, bone and renal tumours also had lower mean retinol and
-tocopherol levels than controls. Brain tumour patients had low vitamin E levels. Low serum values of antioxidant vitamins were associated with childhood neoplasm occurrence. Some site-specific effect was reported. Low peripheral nutrient levels are not considered as cancer promoters but rather as an impairment of the body's defence mechanism occurring during the cancer-related metabolic and nutritional disturbances and inflammation processes.
Received 1 March 1993
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