Background: Diagnosis of autoantibody- and immune complex-induced skin diseases is primarily based on direct immunofluorescence (DIF) microscopy. DIF staining is usually performed manually and, therefore, is labor intensive. The quality of immunohistochemical results considerably depends on the experience of the person conducting the tests. The novel EUROTide(™) technique in combination with the biochip-based system EUROPath represents a new technology for automation of DIF staining.
Methods: Frozen sections of previously characterized skin biopsies from bullous pemphigoid and pemphigus vulgaris patients were incubated with fluorescein-labelled anti-human IgG and complement C3c following the standard manual procedure and, for comparison, applying EUROTide/EUROPath in an automated version.
Results: Both, the manual and the automated procedure, detected IgG and C3c deposits in all samples. However, DIF stainings performed with EUROTide/EUROPath displayed more intense specific IF signals and distinctly less background staining. The detecting antibody could be used at a ×4 higher dilution.
Conclusion: EUROTide/EUROPath applied in an automated system improves diagnostic accuracy and saves reagents. Larger studies in other routine laboratories may further explore the value of the EUROTide/EUROPath technology and may include comparison with other automated stainers.
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http://dx.doi.org/10.1111/cup.12637 | DOI Listing |
has been identified in human and mouse HD brain as the pathogenic exon 1 mRNA generated from aberrant splicing between exon 1 and 2 that contributes to aggregate formation and neuronal dysfunction (Sathasivam et al., 2013). Detection of the HTT exon 1 protein (HTTex1p) has been accomplished with surrogate antibodies in fluorescence-based reporter assays (MSD, HTRF), and immunoprecipitation assays, in HD postmortem cerebellum and knock-in mice but direct detection by SDS-PAGE and western blot assay has been lacking.
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December 2024
Dermatology, Corewell Health Farmington Hills Hospital, Farmington Hills, USA.
Dyshidrosiform bullous pemphigoid (DBP) is a rare variant of bullous pemphigoid (BP) that mainly affects elderly patients and presents with tense bullae formation on the palms, soles, or both palms and soles. This case report describes an 87-year-old woman who was evaluated in the hospital for a month-long erythematous and pruritic rash on most of her body that eventually manifested into tense blisters on the palms. DBP can pose a challenge to clinicians as it can resemble a variety of different vesicular diseases.
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January 2025
MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, PR China.
Background: Tongue squamous cell carcinoma (TSCC) is a malignant oral cancer with unclear pathogenesis that shows a tendency for early-stage lymphatic metastasis. This results in a poor prognosis, with a low 5-year survival rate. Dietary sodium nitrite (NaNO) has proposed associations with disease, including cancer.
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January 2025
Department of Neurosurgery, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China. Electronic address:
5-Fluorouracil (5-FU) is a primary chemotherapeutic agent for gastrointestinal cancers, known to improve survival but also cause significant intestinal damage, affecting patient quality of life. This study investigated the IL-23-IL-22 axis's role in moderating 5-FU-induced intestinal damage. We analyzed paracancerous tissue damage in colon cancer patients with different Tumor Regression Grade (TRG) and found a direct correlation between TRG and tissue damage severity, indicating that higher chemotherapy effectiveness is linked to increased tissue damage.
View Article and Find Full Text PDFAm J Dermatopathol
December 2024
Department of Pathology, University of Virginia, Charlottesville, VA; and.
This is a retrospective cross-sectional diagnostic test accuracy study of direct immunofluorescence (DIF) performed on a group of potential lupus erythematosus (LE)/dermatomyositis (DM) skin biopsies from 2015 to 2020 at a large, academic medical center. For purposes of this study, which was focused primarily on detection of LE/DM-related interface dermatitis, DIF was considered positive for a LE/DM pattern if it showed granular deposition of immunoglobulin G, with or without C3, at the basement membrane zone on the final pathology report. Blinded clinicopathologic correlation was the reference standard.
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