Evidence map›Paper›PMID 31207966›Full record

ArticleInternational journal of molecular sciences2019

Initial Harm Reduction by N-Acetylcysteine Alleviates Cartilage Degeneration after Blunt Single-Impact Cartilage Trauma in Vivo.

Jana Riegger, Frank Leucht, Hans-Georg Palm, Anita Ignatius, Rolf E Brenner

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

12 citing papers in PubMed, 16 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Jana RieggerDivision for Biochemistry of Joint and Connective Tissue Diseases, Department of Orthopedics, University of Ulm, Ulm 89081, Germany. jana.riegger@uni-ulm.de.
Frank LeuchtDepartment of Orthopedics, University of Ulm, Ulm 89081, Germany. frank.leucht@rku.de.
Hans-Georg PalmDepartment of Orthopedics and Trauma Surgery, German Armed Forces Hospital Ulm, Ulm 89081, Germany. hansgeorgerichpalm@bundeswehr.org.
Anita IgnatiusInstitute of Orthopedic Research and Biomechanics, University of Ulm, Ulm 89081, Germany. anita.ignatius@uni-ulm.de.ORCID 0000-0002-4782-1979
Rolf E BrennerDivision for Biochemistry of Joint and Connective Tissue Diseases, Department of Orthopedics, University of Ulm, Ulm 89081, Germany. rolf.brenner@uni-ulm.de.
Universität Ulm · DEUniversity Hospital Ulm · DE

Funding

German Mistry of Defense E/U2A/CD524/DF560
6 · The paper itself

Abstract

Joint injuries are highly associated with the development of post-traumatic osteoarthritis. Previous studies revealed cell- and matrix-protective effects of N-acetylcysteine (NAC) after ex vivo cartilage trauma, while chondroanabolic stimulation with bone morphogenetic protein 7 (BMP7) enhanced type II collagen (COL2) expression. Here, as a next step, we investigated the combined and individual efficacy of intra-articular antioxidative and chondroanabolic treatment in a rabbit in vivo cartilage trauma model. Animals were randomly divided into group A (right joint: trauma (T); left joint: T+BMP7) and group B (right joint: T+NAC; left joint: T+BMP7+NAC). Condyles were impacted with the use of a spring-loaded impact device to ensure defined, single trauma administration. After 12 weeks, histopathological analysis was performed and the presence of matrix metalloproteinase 13 (MMP-13) and COL2 was assessed. Trauma-induced hypocellularity, MMP-13 expression, and cell cluster formation were reduced in NAC-treated animals. In contrast, BMP7 further increased cluster formation. Moreover, synovial concentrations of COL2 carboxy propeptide (CPII) and proteoglycan staining intensities were enhanced in NAC- and NAC+BMP7-treated joints. For the first time, the efficacy of NAC regarding early harm reduction after blunt cartilage trauma was demonstrated in vivo. However, parallel administration of BMP7 was not significantly superior compared to NAC alone.

Indexed as

RegenerationAcetylcysteineAnimalsBone Morphogenetic Protein 7CartilageCollagen Type IIFemaleMatrix Metalloproteinase 13OsteoarthritisRabbitsWounds, NonpenetratingAcetylcysteineBone Morphogenetic Protein 7Collagen Type IIMatrix Metalloproteinase 13bone morphogenic protein 7cartilage traumahistomorphologyN-acetylcysteinepost-traumatic osteoarthritistherapy

Identifiers

PMID31207966
PMCPMC6628290
OpenAlexW2949569889

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.