Over the last decade the evaluation of odors and vapors in human breath has
gained more and more attention, particularly in the diagnostics of pulmonary
Ion mobility spectrometry coupled with multi-capillary columns (MCC/IMS), is a
well known technology for detecting volatile organic compounds (VOCs) in air.
It is a comparatively inexpensive, non-invasive, high-throughput method, which
is able to handle the moisture that comes with human exhaled air, and allows
for characterizing of VOCs in very low concentrations.
To identify discriminating compounds as biomarkers, it is necessary to have a
clear understanding of the detailed composition of human breath.
Therefore, in addition to the clinical studies, there is a need for a flexible
and comprehensive centralized data repository, which is capable of gathering
all kinds of related information.
Moreover, there is a demand for automated data integration and semi-automated
data analysis, in particular with regard to the rapid data accumulation,
emerging from the high-throughput nature of the MCC/IMS technology.
Here, we present a comprehensive database application and analysis platform,
which combines metabolic maps with heterogeneous biomedical data in a
The design of the database is based on a hybrid of the entity-attribute-value
(EAV) model and the EAV-CR, which incorporates the concepts of classes and
Additionally it offers an intuitive user interface that provides easy and quick
access to the platform's functionality: automated data integration and
integrity validation, versioning and roll-back strategy, data retrieval as well
as semi-automatic data mining and machine learning capabilities.
The platform will support MCC/IMS-based biomarker identification and validation.
The software, schemata, data sets and further information is publicly available