Evidence map›Paper›PMID 31463444›Full record

ArticleJOR spine2018

Isolation of high-quality RNA from intervertebral disc tissue via pronase predigestion and tissue pulverization.

Stephanie Caprez, Ursula Menzel, Zhen Li, Sibylle Grad, Mauro Alini, Marianna Peroglio

Open access · goldAbstract read
In one paragraph

Article in JOR spine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.2field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 32 citations in OpenAlex.

  1. Review
  2. ISSLS Prize in Basic Science 2026: Early markers of mechanical modulation in whole bovine intervertebral discs loaded in a multiaxial bioreactor.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Stephanie CaprezAO Research Institute Davos Davos Switzerland.
Ursula MenzelAO Research Institute Davos Davos Switzerland.
Zhen LiAO Research Institute Davos Davos Switzerland.ORCID 0000-0002-9754-6389
Sibylle GradAO Research Institute Davos Davos Switzerland.ORCID 0000-0001-9552-3653
Mauro AliniAO Research Institute Davos Davos Switzerland.ORCID 0000-0002-0262-1412
Marianna PeroglioAO Research Institute Davos Davos Switzerland.ORCID 0000-0002-5458-3446
AO Foundation · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The isolation of high-quality RNA from the intervertebral disc and especially from the nucleus pulposus is challenging due to the low cellularity and high proteoglycan content of this tissue. In this study, we report a simple modification of the standard guanidinium thiocyanate-phenol-chloroform extraction method, which involves enzymatic predigestion of the tissue prior to standard RNA isolation. Yield, purity and integrity of RNA isolated from bovine nucleus pulposus, inner annulus fibrosus and outer annulus fibrosus were compared among complete matrix digestion, predigestion and pulverization, pulverization alone, and pulverization followed by on-column purification. With predigestion, the average yield of RNA obtained from bovine nucleus pulposus was 8.82 ± 2.05 ng/mg of wet tissue with 260/280 and 260/230 optical density ratios of 1.91 ± 0.15 and 1.84 ± 0.30, respectively. RIN analysis indicated that RNA quality was best preserved with the predigestion method (RNA integrity number > 7), and the extracted RNA was suitable for real-time polymerase chain reaction. This method is of importance for gene expression studies on intervertebral disc development, degeneration and repair, and we anticipate that it may be further applied to other tissues rich in proteoglycans.

Indexed as

gene expressionintervertebral discreal‐time PCRRNA isolation

Identifiers

PMID31463444
PMCPMC6686795
OpenAlexW2805778779

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.