Evidence map›Paper›PMID 25437379›Full record

ArticleIslets2014

Different digestion enzymes used for human pancreatic islet isolation: a mixed treatment comparison (MTC) meta-analysis.

Jakeline Rheinheimer, Patrícia Klarmann Ziegelmann, Rodrigo Carlessi, Luciana Ross Reck, Andrea Carla Bauer, Cristiane Bauermann Leitão, Daisy Crispim

Open access · bronzeAbstract readComparative StudyNetwork Meta-Analysis
In one paragraph

Article in Islets, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Clinical use of donation after circulatory death pancreas for islet transplantation.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2021
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. A novel thermosensitive in-situ gel of gabexate mesilate for treatment of traumatic pancreatitis: An experimental study.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2015
    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

7 authors at 4 institutions in 4 countries.

Jakeline Rheinheimera Laboratory of Biology of Human Pancreatic Islets; Endocrine Division; Hospital de Clinicas de Porto Alegre ; Porto Alegre , Brazil.
Patrícia Klarmann Ziegelmann
Rodrigo Carlessi
Luciana Ross Reck
Andrea Carla Bauer
Cristiane Bauermann Leitão
Daisy Crispim
Hospital de Clínicas de Porto Alegre · BRPost Graduate Medical Institute · PKUniversidade Federal do Rio Grande do Sul · BRUniversity of Rio Grande and Rio Grande Community College · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Collagenases are critical reagents determining yield and quality of isolated human pancreatic islets and may affect islet transplantation outcome. Some islet transplantation centers have compared 2 or more collagenase blends; however, the results regarding differences in quantity and quality of islets are conflicting. Thus, for the first time, a mixed treatment comparison (MTC) meta-analysis was carried out to compile data about the effect of different collagenases used for human pancreas digestion on islet yield, purity, viability and stimulation index (SI). Pubmed, Embase and Cochrane libraries were searched. Of 755 articles retrieved, a total of 15 articles fulfilled the eligibility criteria and were included in the MTC meta-analysis. Our results revealed that Vitacyte and Liberase MTF were associated with a small increase in islet yield (islet equivalent number/g pancreas) when compared with Sevac enzyme [standardized mean difference (95% credible interval - CrI) = -2.19 (-4.25 to -0.21) and -2.28 (-4.49 to -0.23), respectively]. However, all other enzyme comparisons did not show any significant difference regarding islet yield. Purity and viability percentages were not significantly different among any of the analyzed digestion enzymes. Interestingly, Vitacyte and Serva NB1 were associated with increased SI when compared with Liberase MTF enzyme [unstandardized weighted mean difference (95% CrI) = -1.69 (-2.87 to -0.51) and -1.07 (-1.79 to -0.39), respectively]. In conclusion, our MTC meta-analysis suggests that the digestion enzymes currently being used for islet isolation works with similar efficiency regarding islet yield, purity and viability; however, Vitacyte and Serva NB1 enzymes seem to be associated with an improved SI as compared with Liberase MTF.

Indexed as

Cell SeparationCollagenasesIslets of LangerhansHumansIslets of Langerhans TransplantationCollagenasesBMI, body mass indexcGMP, current good manufacturing practiceCIT, cold ischemia timeCrIs, credible intervalsdigestion collagenaseenzymeFE, fixed effectGRADE, grading of recommendations assessment, development and evaluationhuman islet isolationIEQ, islet equivalent numbermeta-analysismixed treatment comparisonMTC, mixed treatment comparisonNB, neutral proteaseRE, random effectSI, stimulation indexSMD, standardized mean differenceT1DM, type 1 diabetes mellitusWMD, weighted mean difference

Identifiers

PMID25437379
PMCPMC4588164
OpenAlexW2004658922

What OpenQuestion holds

Textmetadata
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.