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Optimization, Design and Avoiding Pitfalls in Manual Multiplex Fluorescent Immunohistochemistry
Published on: July 26, 2019
Multiplex immunohistochemistry reveals histological features of three different intestinal polyp subtypes in
Lanlan Huang1, Xinjia Liu1, Songyang Li2,3
1The School of Pediatrics, Hengyang Medical School, University of South China, Changsha, 410007, China.
Insights
Multiplex immunohistochemistry revealed distinct structural differences between solitary juvenile polyps (SJPs), juvenile polyposis syndrome (JPS) polyps, and Peutz-Jeghers syndrome (PJS) polyps, aiding in their diagnosis.
Area of Science:
- Gastroenterology
- Pediatric Pathology
- Molecular Pathology
Background:
- Limited histological understanding of pediatric intestinal polyps.
- Focus on three subtypes: solitary juvenile polyps (SJPs), juvenile polyposis syndrome (JPS)-related polyps, and Peutz-Jeghers syndrome (PJS)-related polyps.
Purpose of the Study:
- To differentiate between SJP, JPS, and PJS polyps using advanced histological techniques.
- To enhance comprehension of the structural characteristics of these pediatric intestinal polyp subtypes.
Main Methods:
- Multiplex immunohistochemistry (mIHC) applied to 12 intestinal polyp samples (4 each of SJP, JPS, PJS).
- Analysis of polyp tissues obtained via colonoscopy or surgical procedures.
Main Results:
- PJS polyps showed epithelial dysplasia, dendritic gland hyperplasia, and villous structures with finger-like projections.
- SJP and JPS polyps exhibited cystic glandular dilation and eroded epithelia.
- PJS polyps were rich in microvessels and smooth muscle fibers; SJP/JPS polyps had lymphoid follicle-like structures.
Conclusions:
- mIHC reveals distinct histological features differentiating SJP, JPS, and PJS polyps.
- Findings improve structural understanding and diagnostic potential for these conditions.
Background:
Histologically, our understanding of intestinal polyps remains limited in scope, particularly regarding the diverse subtypes observed in pediatric patients. To enhance our comprehension, three different polyp subtypes including solitary juvenile polyps (SJPs), juvenile polyposis syndrome (JPS)-related polyps, and Peutz‒Jeghers syndrome (PJS)-related polyps were investigated.
Methods:
This study used advanced multiplex immunohistochemistry (mIHC) technology to analyze polyps comprising 4 SJP, 4 JPS and 4 PJS polyps from 12 individual patients who underwent colonoscopies or radical surgical procedures. subtypes.
Results:
These mIHC analyses revealed some differences among these polyp subtypes. PJS-related polyps, specifically, displayed epithelial dysplasia with dendritic gland hyperplasia and distinct villous structures adorned with finger-like projections on their surfaces. In contrast, SJP and JPS polyps exhibited cystic glandular dilation, with their surfaces lined with continuous but eroded epithelia. Furthermore, PJS polyps had an abundance of microvessels and thick smooth muscle fibers, whereas SJP and JPS polyps were characterized by lymphoid follicle-like structures.
Conclusions:
These findings not only deepen our structural understanding of various intestinal polyp subtypes but also offer valuable insights that may inform the diagnosis of patients with these conditions.
