Topical Chemotherapeutic Effect of Thymoquinone, Epigallocatechin-3-gallate, and Curcumin on Chemically Induced Oral Epithelial Dysplasia in Hamsters.

Elmansy, Merhan Nabih; Shata, Mona Saad; El-sherbiny, Randa Hamed

doi:10.21608/edj.2023.240685.2735

	Topical Chemotherapeutic Effect of Thymoquinone, Epigallocatechin-3-gallate, and Curcumin on Chemically Induced Oral Epithelial Dysplasia in Hamsters.
Egyptian Dental Journal
Volume 70, Issue 1 - Serial Number 3, January 2024, Page 251-260 PDF (3.39 MB)
Document Type: Original Article
DOI: 10.21608/edj.2023.240685.2735
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Authors
Merhan Nabih Elmansy ¹; Mona Saad Shata ²; Randa Hamed El-sherbiny ³
¹Associate professor in Oral Pathology Department, Faculty of Dentistry, Suez Canal University
²Associate professor in Oral Pathology Department, Faculty of Dentistry, Suez Canal University.
³lecturer in Oral and Maxillofacial Pathology Department, Faculty of Dentistry, Suez University, Suez, Egypt
Abstract
This study aimed to compare the effects of Thymoquinone (TQ), Epigallocatechin gallate (EGCG) and Curcumin (CUR) on the inhibition of progression of oral premalignant lesions to invasive carcinoma through detection of PCNA and Caspase 3 expression. Thirty Syrian golden hamsters were divided into 5 groups (n=6). G.A: no treatment was given. The remaining of the hamsters were painted three times per week for six weeks with 0.5% DMBA. Then, they were subdivided into: G.B 1: did not receive any treatment till 12th week. G.B 2, 3, 4: were painted by TQ, EGCG, and CUR 3 times/week for another 6 weeks respectively. In G.B1; 100% of hamsters revealed OSCC. In G.B2 (TQ); 16.6% hamsters showed superficial invasion, 33.3% revealed carcinoma in situ and 50% showed severe dysplasia. In G.B3 (EGCG), 66.6% of hamsters showed severe dysplasia and 33.3% exhibited moderate dysplasia. In G.B4 (CUR), 66.6% hamsters showed well-differentiated OSCC, and 33.3% revealed carcinoma in situ. Significant decrease of PCNA immunoreactivity in GA, GB3, and GB2 (8.9 ± 2.2, 16.1 ± 2.4, and 32.5 ± 1.3 respectively) in comparison with G.B1 (53.7 ± 1.4). While GB4, showed statistically significant decrease (40.7 ± 0.8) in comparison to G.B1. Significant increase of Caspase 3 expression in GB3, GB2, GB4, and GA (120.3 ± 2.1, 100 ± 3.1, 70.5 ± 0.9, and 59.9 ± 11.7 respectively) in comparison with G.B1. Topical EGCG had a superior therapeutic effect than TQ, and CUR against the progression of oral premalignant lesions.
Keywords
oral squamous cell carcinoma; phytotherapy; thymoquinone; epigallocatechin gallate; curcumin


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