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Record W2149403113

The etiology and natural history of type 2 diabetes

2005· dissertation· en· W2149403113 on OpenAlexfundno aff
Brian Topp

Bibliographic record

VenueSummit (Simon Fraser University) · 2005
Typedissertation
Languageen
FieldMedicine
TopicPancreatic function and diabetes
Canadian institutionsnot available
FundersMedical Research CouncilCanadian Institutes of Health ResearchNatural Sciences and Engineering Research Council of CanadaMedical Research Council CanadaMitacs
KeywordsType 2 diabetesDiabetes mellitusInsulin resistanceEtiologyDiseaseNatural historyPathogenesisMedicineBioinformaticsComputer scienceBiologyEndocrinologyInternal medicine
DOInot available

Abstract

fetched live from OpenAlex

Type 2 diabetes is a complex disorder characterized by progressive defects in nearly every aspect of metabolic regulation. Despite this complexity, traditional in vivo methodologies have limited experimental examination to a small number of metabolic indices at one or two points in time. As a result the etiology and natural history of this disease remain unclear and much debated. This thesis takes a two pronged approach to this problem. First, a mathematical model is developed to incorporate experimental data from different sources into an integrated representation of metabolic regulation. Bifurcation and simulation analysis of this model are used to investigate mechanisms of metabolic regulation as well as the pathogenesis of type 2 diabetes. Second, new experimental methodologies are developed that greatly improve the practicality of estimating several key metabolic indices in vivo. Applying these methodologies to animal models of type 2 diabetes allowed us to perform a fully dynamic and integrative analysis of the pathogenesis of type 2 diabetes in two commonly used animal models. Overall, data from this thesis suggests that the etiology of type 2 diabetes lies in two distinct abnormalities; rapid development of insulin resistance coupled to impaired P-cell mass adaptation.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.004

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.009
GPT teacher head0.209
Teacher spread0.200 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2005
Admission routes1
Has abstractyes

Explore more

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