[Flow cytometry dynamic study binding to bromodeoxyuridine in golden hamster cheek pouch premalignancy]

Area of Science:

• Oral Pathology
• Carcinogenesis Research
• Epithelial Tissue Dynamics

Background:

• Understanding cellular dynamics is crucial for identifying early stages of epithelial cancers.
• Premalignant lesions require sensitive detection methods to prevent progression to carcinoma.
• The golden hamster cheek pouch model is a recognized tool for oral carcinogenesis studies.

Purpose of the Study:

• To investigate the cellular dynamic features of premalignancy and carcinoma in epithelial tissue.
• To evaluate the efficacy of flow cytometry (FCM) with bromodeoxyuridine (BRDU) binding for detecting cellular changes.
• To compare cellular dynamics between normal and dimethylbenzanthracene (DMBA)-induced premalignant hamster cheek pouch tissues.

Main Methods:

• Established a golden hamster cheek pouch premalignant model using dimethylbenzanthracene (DMBA) smearing.
• Utilized flow cytometry (FCM) with bromodeoxyuridine (BRDU) binding for cellular detection.
• Conducted a contrast study on 30 Syrian golden hamsters, comparing control and DMBA-smeared groups.

Main Results:

• Microscopic examination revealed gradual aggravation of cellular lesions with extended DMBA smearing.
• FCM detection showed a significant difference in the detection rate of 'Sporiod' cells between control and DMBA-smeared groups.
• Significant differences were observed via FCM even in cases with mild dysplasia noted microscopically.

Conclusions:

• The golden hamster cheek pouch premalignancy model exhibits distinct cellular dynamic features characteristic of dysplasia.
• FCM analysis, particularly with BRDU binding, is a sensitive method for detecting cellular dynamic changes in premalignant lesions.
• This study supports the utility of FCM in identifying and characterizing dysplasia in epithelial premalignancy.