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Record W6990954256

Estudo imunoistoquímico das neoplasias melanocíticas uvais em cães

2015· article· pt· W6990954256 on OpenAlexaboutno aff

Bibliographic record

VenueAmericanae (AECID Library) · 2015
Typearticle
Languagept
FieldMedicine
TopicVeterinary Oncology Research
Canadian institutionsnot available
Fundersnot available
KeywordsMelanomaImmunohistochemistryStage (stratigraphy)MalignancySignificant differenceLesion
DOInot available

Abstract

fetched live from OpenAlex

Os melanomas possuem diferentes comportamentos entre as espécies, sendo de grande importância a caracterização do mecanismo molecular que influencia tal diversidade comportamental. Objetivou-se neste estudo avaliar as características moleculares das neoplasias melanocíticas uveais em cães, a fim de compreender as diferenças entre o melanoma uveal humano e o canino. Foram utilizados 64 olhos de 64 cães com diagnóstico de neoplasia intraocular primária de origem melanocítica. Com base nos critérios histopatológicos estabelecidos foram diagnosticados 37 melanocitomas e 27 melanomas. Não houve predominância sexual e cães sem raça definida, Labrador Retriever e Cocker Spaniel Inglês foram os mais acometidos. Foram analisadas características morfológicas, taxa de mitose, grau de pigmentação, presença de extensão extraocular, localização, infiltrado inflamatório, loop vascular e necrose. Foi realizada análise imunoistoquímica avaliando os marcadores Melan-A, HMB-45, Ki-67 e COX-2. O Melan-A mostrou ser mais sensível, sendo expresso em 53,1% dos casos, enquanto o HMB-45 foi positivo em apenas 31,2% dos casos. O Melan-A e o HMB-45 foram menos frequentes nos melanocitomas comparado com os melanomas. Em 23 casos, nenhum dos dois marcadores reagiu. Os resultados do marcador de proliferação Ki-67 revelaram maior positividade entre os melanomas, com média do índice Ki-67 de 37,8%, enquanto a média dos melanocitomas foi de 15%. Não houve diferença estatística da marcação do Ki-67 com os tipos celulares dentre os melanomas. A COX-2 reagiu positivamente na maioria dos casos e não foi observada diferença estatística entre melanocitomas e melanomas. Dentre os melanomas não houve diferença estatística entre os tipos celulares para a marcação da COX-2. Os achados aqui discutidos revelam interessantes diferenças e similaridades entre as neoplasias melanocíticas uveais no homem e no cão

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)0.001
metaresearch head score (Gemma)0.001
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 score0.003

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
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 head0.049
GPT teacher head0.347
Teacher spread0.298 · 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
Published2015
Admission routes1
Has abstractyes

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