Article ; Online: Canine urothelial carcinoma: a pilot study of microRNA detection in formalin-fixed, paraffin-embedded tissue samples and in normal urine
Journal of Veterinary Diagnostic Investigation. 2024 Jan., v. 36, no. 1 p.70-77
2024
Abstract: We assessed the effects of fixation time in formalin and inclusion of surrounding tissue on microRNA (miRNA) cycle quantification (Cq) values in formalin-fixed, paraffin-embedded (FFPE) urothelial carcinoma (UC) tissue (n = 3), and the effect of ... ...
Abstract | We assessed the effects of fixation time in formalin and inclusion of surrounding tissue on microRNA (miRNA) cycle quantification (Cq) values in formalin-fixed, paraffin-embedded (FFPE) urothelial carcinoma (UC) tissue (n = 3), and the effect of conditions on miRNAs in urine from 1 healthy dog. MiRNAs were extracted using commercial kits and quantified using miRNA-specific fluorometry in normal bladder tissue scrolls, UC tissue cores, and bladder muscularis tissue cores from 4 FFPE bladder sections (3 UCs, 1 normal), plus 1 UC stored in formalin for 1, 8, 15, and 22 d before paraffin-embedding. Urine was collected from a healthy dog on 4 occasions; 1-mL aliquots were stored at 20, 4, −20, and −80°C for 4, 8, 24, and 48 h, and 1 and 2 wk. For both FFPE tissue and urine, we used reverse-transcription quantitative real-time PCR (RT-qPCR) to quantify miR-143, miR-152, miR-181a, miR-214, miR-1842, and RNU6B in each tissue or sample, using miR-39 as an exogenous control gene. The Cq values were compared with ANOVA and t-tests. The time of tissue-fixation in formalin did not alter miRNA Cq values; inclusion of the muscularis layer resulted in a statistically different miRNA Cq profile for miR-152, miR-181a, and RNU6B in bladder tissue. MiRNAs in acellular urine were stable for up to 2 wk regardless of the storage temperature. Our findings support using stored FFPE and urine samples for miRNA detection; we recommend measuring miRNA only in the tissue of interest in FFPE sections. |
---|---|
Keywords | bladder ; carcinoma ; dogs ; fluorometry ; formalin ; genes ; microRNA ; quantitative polymerase chain reaction ; reverse transcription ; storage temperature ; t-test ; urine ; formalin-fixation ; paraffin-embedded tissues ; stability ; urothelial carcinoma |
Language | English |
Dates of publication | 2024-01 |
Size | p. 70-77. |
Publishing place | SAGE Publications |
Document type | Article ; Online |
ZDB-ID | 287603-6 |
ISSN | 1943-4936 ; 1040-6387 |
ISSN (online) | 1943-4936 |
ISSN | 1040-6387 |
DOI | 10.1177/10406387231211908 |
Database | NAL-Catalogue (AGRICOLA) |
More links
Kategorien
In stock of ZB MED Cologne/Königswinter
Zs.A 3645: Show issues | Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (2.OG) ab Jg. 2022: Lesesaal (EG) |
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.