Evidence map›Paper›PMID 15492571›Full record

ArticleAnnals of surgery2004

A pentadecapeptide fragment of islet neogenesis-associated protein increases beta-cell mass and reverses diabetes in C57BL/6J mice.

Lawrence Rosenberg, Mark Lipsett, Ji-Won Yoon, Marc Prentki, Rennian Wang, Hee-Sook Jun, Gary L Pittenger, David Taylor-Fishwick, Aaron I Vinik

Open access · greenAbstract read
In one paragraph

Article in Annals of surgery, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
10.5field-weighted citation impact, top 1% 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

41 citing papers in PubMed, 155 citations in OpenAlex.

  1. Review
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  9. Regenerative medicine of pancreatic islets.World journal of gastroenterology · 2020
    Review
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  15. Genes involved in pancreatic islet cell rejuvenation.The Indian journal of medical research · 2013
    Review
  16. Article
  17. Article
  18. Article
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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

9 authors at 4 institutions in 2 countries.

Lawrence RosenbergDepartment of Surgery, McGill University, Montreal, Quebec, Canada. lawrence.rosenberg@mcgill.ca
Mark Lipsett
Ji-Won Yoon
Marc Prentki
Rennian Wang
Hee-Sook Jun
Gary L Pittenger
David Taylor-Fishwick
Aaron I Vinik
Eastern Virginia Medical School · USMcGill University · CAUniversity of Calgary · CAUniversité de Montréal · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe objective of this study was to demonstrate that islet neogenesis-associated protein (INGAP) peptide, a pentadecapeptide containing the biologically active portion of native INGAP, increases functional beta-cell mass in normal animals and can be used therapeutically to reverse hyperglycemia in streptozotocin-induced diabetes. SUMMARY BACKGROUND DATA: INGAP, a 175 amino acid pancreatic acinar cell protein, has been suggested to be implicated in beta-cell mass expansion.

methodsIn the first part of this study, normoglycemic hamsters were administered either 500 microg INGAP peptide (n = 30) or saline (n = 20) intraperitoneally daily and sacrificed after 10 or 30 days of treatment. Blood glucose and insulin levels were measured, and a histologic and morphometric analysis of the pancreas was performed to determine the effect of INGAP peptide on the endocrine pancreas. In the second part of the study, 6- to 8-week-old C57BL/6J mice (n = 8) were administered multiple low doses of the beta-cell toxin streptozotocin (STZ) inducing insulitis and hyperglycemia. The mice were then injected with INGAP peptide (n = 4) or saline (n = 4) for 39 days and sacrificed at 48 days. Two additional groups of diabetic mice were administered either a peptide composed of a scrambled sequence of amino acids from INGAP peptide (n = 5) or exendin-4 (n = 5), an incretin that has been associated with amelioration of hyperglycemia.

resultsIslet cell neogenesis was stimulated in INGAP-treated hamsters by 10 days. At 30 days, the foci of new endocrine cells had the appearance of mature islets. There was a 75% increase in islet number, with normal circulating levels of blood glucose and insulin. Administration of INGAP peptide to diabetic mice reversed the diabetic state in all animals, and this was associated with increased expression of PDX-1 in duct cells and islet cell neogenesis with a reduction of insulitis in the new islets. Diabetic mice treated with exendin-4 or a scrambled INGAP peptide did not revert from hyperglycemia.

conclusionBecause there is a deficiency of beta-cell mass in both type-1 and type-2 diabetes, INGAP peptide stimulation of fully functional neoislet differentiation may provide a novel approach for diabetes therapy.

Indexed as

AnimalsBlood GlucoseCell DivisionCricetinaeDiabetes Mellitus, ExperimentalDose-Response Relationship, DrugFemaleInsulinIslets of LangerhansMaleMesocricetusMiceMice, Inbred C57BLPancreasPancreatitis-Associated ProteinsPeptide FragmentsBlood GlucoseInsulinPancreatitis-Associated ProteinsPeptide FragmentsProteinsREG3A protein, humanReg3b protein, mouse

Identifiers

PMID15492571
PMCPMC1356495
OpenAlexW2027363052

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.