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Record W4300020644 · doi:10.26443/msurj.v5i1.67

Genomic and Phenotypic Variability of Mycobaterium avium Subspecies

2010· article· en· W4300020644 on OpenAlexaff
Ehsan Dadvar

Bibliographic record

VenueMcGill Science Undergraduate Research Journal · 2010
Typearticle
Languageen
FieldMedicine
TopicMycobacterium research and diagnosis
Canadian institutionsMcGill University
Fundersnot available
KeywordsSubspeciesBiologyMycobacterium avium subspecies paratuberculosisPhenotypeMycobacteriumGenotypeGeneGeneticsMicrobiologyGenomeParatuberculosisBacteriaZoology

Abstract

fetched live from OpenAlex


 
 
 Introduction: Mycobacterium avium complex consists of M. intracellulare and the subspecies of M. avium subsp. avium, M. avium subsp. paratuberculosis and M. avium subsp. hominissuis. Despite their taxonomic relationship, these subspecies are organisms with distinct phenotypes, ranging from environmental bacteria that cause infections in immunocompromised hosts to pathogens targeting birds and ruminants. The reasons for the variable pathogenicity and host range of M. avium subspecies are not known. We hypothesize that genotypic differences between M. avium subsp. avium and M. avium subsp. paraturberculosis can explain different pathogenic outcomes. Methods: We used tri-genomic comparisons to look for DNA fragments unique to each subspecies. We also used an acute model of mouse infection to determine different phenotypic outcomes in response to infection with different Mycobacterium subspecies. results: Through tri-genomic comparisons we identified genetic regions of interest that may contain genes to explain phenotypic or pathogenic differences among subspecies. In an 8 week course infection, mice infected with M. avium subspecies avium had the highest bacterial burden in their spleens and livers. at the same time, mice infected with M. avium subspecies paraturberculosis had the lowest bacterial burden. discussion: Differences in the genomic sequences of the M. avium subspecies suggests that these sequences encode pathogenic factors. Consequently, this study shows that the sequencing of M. avium subspecies genomes can be useful for predicting and explaining variation in pathogenesis.
 
 

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 distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.012
metaresearch head score (Gemma)0.005
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesScience and technology studies
Consensus categoriesScience and technology studies
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.746
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0120.005
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.004
Scholarly communication0.0000.001
Open science0.0010.000
Research integrity0.0000.002
Insufficient payload (model declined to judge)0.0000.000

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 head0.044
GPT teacher head0.356
Teacher spread0.312 · 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; both teacher heads agree on what is shown here.

Study designBench or experimental
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

Citations1
Published2010
Admission routes1
Has abstractyes

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