Evidence map›Paper›PMID 25139882›Full record

Trial reportDiabetes care2014

Quantification of the glycemic response to microdoses of subcutaneous glucagon at varying insulin levels.

Joseph El Youssef, Jessica R Castle, Parkash A Bakhtiani, Ahmad Haidar, Deborah L Branigan, Matthew Breen, W Kenneth Ward

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Diabetes care, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

19 citing papers in PubMed, 51 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Adjunctive Therapies to Optimize Closed-loop Glucose Control.Journal of diabetes science and technology · 2021
    Article
  7. Review
  8. Article
  9. Article
  10. Role of Glucagon in Automated Insulin Delivery.Endocrinology and metabolism clinics of North America · 2020
    Review
  11. Article
  12. Insulin-and-Glucagon Artificial Pancreas Versus Insulin-Alone Artificial Pancreas: A Short Review.Diabetes spectrum : a publication of the American Diabetes Association · 2019
    Article
  13. Glucagon Receptor Signaling and Glucagon Resistance.International journal of molecular sciences · 2019
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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 3 institutions in 2 countries.

Joseph El YoussefOregon Health & Science University, Portland, OR elyoussj@ohsu.edu.
Jessica R CastleOregon Health & Science University, Portland, OR.
Parkash A BakhtianiOregon Health & Science University, Portland, OR.
Ahmad HaidarInstitut de Recherches Cliniques de Montréal, Montreal, Canada.
Deborah L BraniganLegacy Health, Portland, OR.
Matthew BreenLegacy Health, Portland, OR.
W Kenneth WardOregon Health & Science University, Portland, OR Legacy Health, Portland, OR.
Oregon Health & Science University · USLegacy Health · USMontreal Clinical Research Institute · CA

Funding

Oregon Clinical and Translational Research InstituteUL1TR000128 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI ELLISON, DAVID H · 2012 to 2015
$28.7M
Mitigating risk in a closed loop system by exercise detection and miniaturizationDP3DK101044 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI CASTLE, JESSICA R, JACOBS, PETER G · 2013 to 2013
$2.9M
Optimization of an Adaptive Dual-Hormone External Endocrine Pancreas.K23DK090133 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI EL YOUSSEF, JOSEPH · 2011 to 2015
$863k
NCATS NIH HHS UL1 TR000128NCATS NIH HHS UL1TR000128NIDDK NIH HHS DP3 DK101044NIDDK NIH HHS K23 DK090133NIDDK NIH HHS K23-DK-090133
6 · The paper itself

Abstract

objectiveGlucagon delivery in closed-loop control of type 1 diabetes is effective in minimizing hypoglycemia. However, high insulin concentration lowers the hyperglycemic effect of glucagon, and small doses of glucagon in this setting are ineffective. There are no studies clearly defining the relationship between insulin levels, subcutaneous glucagon, and blood glucose. RESEARCH DESIGN AND

methodsUsing a euglycemic clamp technique in 11 subjects with type 1 diabetes, we examined endogenous glucose production (EGP) of glucagon (25, 75, 125, and 175 μg) at three insulin infusion rates (0.016, 0.032, and 0.05 units/kg/h) in a randomized, crossover study. Infused 6,6-dideuterated glucose was measured every 10 min, and EGP was determined using a validated glucoregulatory model. Area under the curve (AUC) for glucose production was the primary outcome, estimated over 60 min.

resultsAt low insulin levels, EGP rose proportionately with glucagon dose, from 5 ± 68 to 112 ± 152 mg/kg (P = 0.038 linear trend), whereas at high levels, there was no increase in glucose output (19 ± 53 to 26 ± 38 mg/kg, P = NS). Peak glucagon serum levels and AUC correlated well with dose (r2 = 0.63, P < 0.001), as did insulin levels with insulin infusion rates (r2 = 0.59, P < 0.001).

conclusionsEGP increases steeply with glucagon doses between 25 and 175 μg at lower insulin infusion rates. However, high insulin infusion rates prevent these doses of glucagon from significantly increasing glucose output and may reduce glucagon effectiveness in preventing hypoglycemia when used in the artificial pancreas.

Indexed as

AdultBlood GlucoseCross-Over StudiesDiabetes Mellitus, Type 1FemaleGlucagonGlucoseGlucose Clamp TechniqueHumansHypoglycemiaInsulinMaleMiddle AgedPancreas, ArtificialBlood GlucoseGlucagonGlucoseInsulin

Identifiers

PMID25139882
PMCPMC4207205
OpenAlexW1965308157

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.