ArticleFrontiers in neuroanatomy2024
Comparison of histological procedures and antigenicity of human post-mortem brains fixed with solutions used in gross anatomy laboratories.
Article in Frontiers in neuroanatomy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 13 citations in OpenAlex.
- A dual-modality workflow for quantifying microvascular structure in human temporal lobe epilepsy.IBRO neuroscience reports · 2026Article
- An integrated multiscale imaging workflow to resolve intracellular co-pathology in human FFPE brain tissue.Free neuropathology · 2026Article
- 18β-Glycyrrhetinic acid-loaded silver nanoparticles mitigate neuroinflammation and endoplasmic reticulum stress in the brain tissue of diabetic rats.Iranian journal of basic medical sciences · 2026Article
- Differential effects of prolonged post-fixation on immunohistochemical and histochemical staining for postmortem human brains.Frontiers in neuroanatomy · 2024Article
- Impact of fixation duration on messenger RNA detectability in human formalin-fixed paraffin-embedded brain tissue.Brain communications · 2024Article
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Authors and funding
5 authors at 2 institutions in 1 country.
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Abstract
Background: Brain banks provide small tissue samples to researchers, while gross anatomy laboratories could provide larger samples, including complete brains to neuroscientists. However, they are preserved with solutions appropriate for gross-dissection, different from the classic neutral-buffered formalin (NBF) used in brain banks. Our previous work in mice showed that two gross-anatomy laboratory solutions, a saturated-salt-solution (SSS) and an alcohol-formaldehyde-solution (AFS), preserve antigenicity of the main cellular markers (neurons, astrocytes, microglia, and myelin). Our goal is now to compare the quality of histology and antigenicity preservation of human brains fixed with NBF by immersion (practice of brain banks) vs. those fixed with a SSS and an AFS by whole body perfusion, practice of gross-anatomy laboratories. Methods: We used a convenience sample of 42 brains (31 males, 11 females; 25-90 years old) fixed with NBF (N = 12), SSS (N = 13), and AFS (N = 17). One cm Results: Sections of SSS-fixed brains were more difficult to manipulate and showed poorer tissue quality than those from brains fixed with the other solutions. The four antigens were preserved, and cell labeling was more often homogeneous in AFS-fixed specimens. NeuN and GFAP were not always present in NBF and SSS samples. Some antigens were heterogeneously distributed in some specimens, independently of the fixative, but an antigen retrieval protocol successfully recovered them. Finally, the histochemical stains were of sufficient quality regardless of the fixative, although neurons were more often paler in SSS-fixed specimens. Conclusion: Antigenicity was preserved in human brains fixed with solutions used in human gross-anatomy (albeit the poorer quality of SSS-fixed specimens). For some specific variables, histology quality was superior in AFS-fixed brains. Furthermore, we show the feasibility of frequently used histochemical stains. These results are promising for neuroscientists interested in using brain specimens from anatomy laboratories.
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