ArticleBiopreservation and biobanking2011
Variation of Peripheral Blood Mononuclear Cell RNA Quality in Archived Samples.
Article in Biopreservation and biobanking, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
Funding
Abstract
The Infectious Diseases BioBank (IDB) has consistently archived peripheral blood mononuclear cell (PBMNC) RNA for transcriptome analyses. RNA is particularly labile, and hence, these samples provide a sensitive indicator for assessing the IDB's quality-assurance measures. Independent analyses of 104 PBMNC RNA specimens from 26 volunteers revealed that the mean RNA integrity number (RIN) was high (9.02), although RIN ranged between scores of 7 and 10. This variation of RIN values was not associated with ischemic time, PBMNC quality, number of samples processed per day, self-medication after immunization, freezer location, donor characteristics, differential white blood cell counts, or daily variation in RNA extractions (all P>0.05). RIN values were related to the date of collection, with those processed during mid-summer having highest RIN scores (P=0.0001). Amongst specimens with the lowest RIN scores, no common feature could be identified. Thus, no technical explanation for the variation in RNA quality could be ascertained and these may represent normal physiological variations. These data provide strong evidence that current IDB protocols for the isolation and preservation PBMNC RNA are robust.
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