Evidence map›Paper›PMID 41814140›Full record

ArticleVeterinary pathology2026

Effects of fixation and demineralization on immunohistochemical assessment of canine bone marrow.

Gabriella M L Diamantino, Janet Beeler-Marfisi, Robert A Foster, Gabrielle Monteith, William Sears, Alice Defarges, Dorothee Bienzle

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Article in Veterinary pathology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Gabriella M L DiamantinoUniversity of Guelph, Guelph, ON, Canada.
Janet Beeler-MarfisiUniversity of Guelph, Guelph, ON, Canada.
Robert A FosterUniversity of Guelph, Guelph, ON, Canada.
Gabrielle MonteithUniversity of Guelph, Guelph, ON, Canada.
William SearsUniversity of Guelph, Guelph, ON, Canada.
Alice DefargesUniversity of Guelph, Guelph, ON, Canada.
Dorothee BienzleUniversity of Guelph, Guelph, ON, Canada.ORCID 0000-0002-2301-2931

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this study was to evaluate the effect of different fixatives and demineralizers on immunohistochemical (IHC) detection of antigens in bone marrow (BM). Sternal BM samples were collected within 24 hours of death from dogs with spontaneous disease, fixed with acetic acid-zinc-formalin (AZF) or 10% neutral-buffered formalin (NBF) for 24 hours, and decalcified with formic acid, hydrochloric acid, or ethylenediaminetetraacetic acid (EDTA) for 1, 12, or 24 hours, respectively. Immunohistochemical sections for CD3, CD20, CD34, CD204, FLT3, and factor VIII-related antigen (FVIII-rAG) were scored for background, signal intensity, and percent positive cells by 4 independent raters. Some endothelial but not hematopoietic cells were CD34 immunopositive, precluding further assessment. Immunopositive BM cells ranged from 1.3% to 18.3% (CD3), 1.3% to 22.3% (CD20), 0.5% to 22.5% (CD204), and 0% to 17.6% (FLT3). Background scores were similar for all antigens and fixatives except for CD3, for which NBF yielded lower scores than AZF. The signal intensity for all IHC assays was similar for AZF and NBF. The percentage of FLT3- and FVIII-rAG-immunopositive cells was slightly higher in AZF- than NBF-fixed samples. Different demineralizers yielded similar results for all IHC assays except higher background for CD20/EDTA. Signal intensity was higher for CD204 in samples demineralized with EDTA rather than acids. Higher percentages of CD204 and FLT3 immunopositive cells were noted with EDTA relative to acid demineralization. Overall, with the use of stringently standardized pre-analytic and processing protocols, all IHC assays yielded acceptable results, and differences between protocols were considered minor.

Indexed as

Bone MarrowFixativesImmunohistochemistryTissue FixationAnimalsDecalcification TechniqueDog DiseasesDogsEdetic AcidFormaldehydeHydrochloric AcidEdetic AcidFixativesFormaldehydeHydrochloric Acidacetic acid-zinc-formalinbone marrowCD20CD204CD3CD34decalcificationdogEDTAfactor VIII–related antigenfixationFLT3formic acidhydrochloric acidimmunohistochemistry

Identifiers

PMID41814140
PMCPMC13534777

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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.