Dataset Information

Does centrifugation matter? Centrifugal force and spinning time alter the plasma metabolome.

ABSTRACT:

Background

Centrifugation is an indispensable procedure for plasma sample preparation, but applied conditions can vary between labs.

Aim

Determine whether routinely used plasma centrifugation protocols (1500×g 10 min; 3000×g 5 min) influence non-targeted metabolomic analyses.

Methods

Nuclear magnetic resonance spectroscopy (NMR) and High Resolution Mass Spectrometry (HRMS) data were evaluated with sparse partial least squares discriminant analyses and compared with cell count measurements.

Results

Besides significant differences in platelet count, we identified substantial alterations in NMR and HRMS data related to the different centrifugation protocols.

Conclusion

Already minor differences in plasma centrifugation can significantly influence metabolomic patterns and potentially bias metabolomics studies.

SUBMITTER: Lesche D

PROVIDER: S-EPMC5025507 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Publications

Does centrifugation matter? Centrifugal force and spinning time alter the plasma metabolome.

Lesche Dorothea D Geyer Roland R Lienhard Daniel D Nakas Christos T CT Diserens Gaëlle G Vermathen Peter P Leichtle Alexander B AB

Metabolomics : Official journal of the Metabolomic Society 20160915 10

<h4>Background</h4>Centrifugation is an indispensable procedure for plasma sample preparation, but applied conditions can vary between labs.<h4>Aim</h4>Determine whether routinely used plasma centrifugation protocols (1500×<i>g</i> 10 min; 3000×<i>g</i> 5 min) influence non-targeted metabolomic analyses.<h4>Methods</h4>Nuclear magnetic resonance spectroscopy (NMR) and High Resolution Mass Spectrometry (HRMS) data were evaluated with sparse partial least squares discriminant analyses and compared ...[more]

PMID: 27729833

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Project description:BackgroundCentrifugation is routinely employed in handling the ejaculates of some species, but it is not part of the commonly used protocols in ram. However, the development and implementation of new assisted reproductive technologies, alternative preservation models based on washing sperm from a cellular ageing-accelerating substance such as the seminal plasma, and basic studies in spermatology is associated with the use of centrifugation. This requires a specific evaluation of the centrifugation protocols considering the species-specific relationship with the potential damage produced by this procedure. No previous studies have determined the effect of different centrifugation forces on ram sperm. Therefore, we aimed to assess the performance of three centrifugal forces (600×g, 3000×g, and 6000×g for 10 min at room temperature) and their effects on ram sperm motility and functionality.ResultsSperm motility and functionality parameters were assessed at 0 h and after 2 h of incubation at 37 °C. As expected, a higher cell packaging degree was obtained at high centrifugation forces (P ≤ 0.0001). Cell packaging was unstable at all centrifugal forces. Thus, there was a high cell resuspension rate after less than 2 min. Regarding sperm quality, there was a change in movement pattern of 3000×g and 6000×g centrifuged sperm after 2 h of incubation at 37 °C, characterized by an increase in rapid progressive motility, linearity, straightness, and beat frequency, and a decrease in medium progressive motility, curvilinear velocity, path velocity, and head lateral amplitude. Non-significant differences were obtained among the different treatments concerning the total viability. However, we observed a significant increase (P ≤ 0.05) in the percentage of viable apoptotic sperm in the samples centrifuged at 6000×g at 0 h.ConclusionsCentrifugal forces equal to or greater than 3000×g induced some deleterious effects in ram sperm quality, and lower forces did not provide a successful cell packaging degree.

Dataset Information

Does centrifugation matter? Centrifugal force and spinning time alter the plasma metabolome.

Background

Aim

Methods

Results

Conclusion

Publications

Does centrifugation matter? Centrifugal force and spinning time alter the plasma metabolome.

Similar Datasets

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