Evidence map›Paper›PMID 23756701›Full record

Trial reportIslets

Clinical islet isolation outcomes with a highly purified neutral protease for pancreas dissociation.

Doug O'Gorman, Tatsuya Kin, Rena Pawlick, Sharleen Imes, Peter A Senior, A M James Shapiro

Open access · hybridAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Islets. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

7 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Experimental studies on islets isolation, purification and function in rats.International journal of clinical and experimental medicine · 2015
    Article
  6. Article
  7. Islet product characteristics and factors related to successful human islet transplantation from the Collaborative Islet Transplant Registry (CITR) 1999-2010.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2014
    Article
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 2 institutions in 1 country.

Doug O'GormanClinical Islet Transplant Program; Department of Transplant Services; Alberta Health Services; Edmonton, AB Canada.
Tatsuya Kin
Rena Pawlick
Sharleen Imes
Peter A Senior
A M James Shapiro
Alberta Health Services · CAUniversity of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPancreas dissociation is a critical initial component of the islet isolation procedure and introduces high variability based on factors including the enzyme type, specificity and potency. Product refinement and alterations to the application strategies have improved isolation outcomes over time; however, islet utilization from donor organs remains low. In this study we evaluate a low endotoxin-high activity grade neutral protease in clinical islet isolation. MATERIALS AND

methodsThe use of a non-collagenolytic enzyme, either thermolysin or high active neutral protease, was randomized in clinical islet isolations to evaluate efficacy. Additionally a retrospective comparison to neutral protease NB was conducted.

resultsThe thermolysin group had lower trapped islet population and increased purity and post-culture islet mass in comparison to high active grade neutral protease. Comparison of neutral protease NB GMP grade to high active neutral protease displayed no measurable difference in islet mass or viability and transplantation outcomes at 1 mo post-transplant were favorable for both groups.

conclusionsHigh activity neutral protease can generate clinical grade islets and may prove beneficial to islet function and viability based on a reduced endotoxin load but dosing of neutral protease requires ongoing optimization.

Indexed as

Tissue and Organ HarvestingAdultBacterial ProteinsCell AdhesionCollagenasesDiabetes Mellitus, Type 1EndopeptidasesGraft SurvivalHathewaya histolyticaHumansIndicators and ReagentsInfusions, IntravenousIslets of LangerhansIslets of Langerhans TransplantationMiddle AgedPortal VeinBacterial ProteinsCollagenasesdispaseEndopeptidasesIndicators and ReagentsLiberaseThermolysinenzyme dissociationislet isolationislet transplantationneutral proteasepancreaspancreas dissociationthermolysin

Identifiers

PMID23756701
PMCPMC4049837
OpenAlexW1963579109

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.