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SHR Neuro Cancer Cardio Lipid Metab Microb
Enko, D; Kriegshäuser, G; Halwachs-Baumann, G; Mangge, H; Schnedl, WJ.
Serum diamine oxidase activity is associated with lactose malabsorption phenotypic variation.
Clin Biochem. 2017; 50(1-2):50-53
Doi: 10.1016/j.clinbiochem.2016.08.019
Web of Science
PubMed
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FullText_MUG
- Leading authors Med Uni Graz
- Enko Dietmar
- Schnedl Wolfgang
- Co-authors Med Uni Graz
- Baumann Gabriele
- Kriegshäuser Gernot
- Mangge Harald
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- Abstract:
- Recently, an intermediate lactose intolerance (LI) phenotype based on the lactase gene (LCT) C/T-13910 polymorphism was proposed. However, a multifactorial genesis of LI phenotypic variation including endogenous and exogenous factors cannot be ruled out. Therefore, this study was conducted to investigate a possible association between serum diamine oxidase (DAO) and LI phenotypes in individuals with lactose malabsorption (LM). A total of 121 ambulatory patients with LM were included in this retrospective study. The lactose hydrogen breath test (LHBT) and serum DAO activity measurements were performed on the same day. A thorough anamnesis with respect to gastrointestinal symptoms was carried out at the initial consultation. In total, 44 (36.4%) patients with a serum DAO activity <10U/mL showed higher H2 levels after 60 (mean: 53.7±57.6 vs 34.5±31.7 parts per million [ppm], p=0.116), 90 (mean: 70.3±57.5 vs 52.7±41.4ppm, p=0.184) and 120min (mean: 98.9±72.5 vs 67.9±44.9ppm, p=0.012) during LHBT compared to 77 (63.6%) patients with a serum DAO activity ≥10U/mL. Individuals with a serum DAO activity <10U/mL tended to report gastrointestinal symptoms during the LHBT more often (p=0.091). Our findings suggest that patients with LM and a serum DAO activity level<10U/mL had higher end-expiratory H2 levels and tended to be more symptomatic during the LHBT compared to LM patients with DAO activity levels ≥10U/mL. Copyright © 2016 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Amine Oxidase (Copper-Containing) - blood
- Female -
- Humans -
- Lactose Intolerance -
- Male -
- Middle Aged -
- Phenotype -
- Retrospective Studies -
- Find related publications in this database (Keywords)
- Lactose intolerance
- Diamine oxidase
- Breath test
- Phenotypes