Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma

Abstract Background Calretinin is a 29 kilodalton (KDa) calcium-binding protein that is expressed in normal and tumoral tissues. The expression of calretinin has been shown in the dental epithelium during odontogenesis and in different odontogenic cysts and tumors such as ameloblastoma. Since the ep...

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Main Authors: Maryam Mahdizadeh, Nazanin Mahdavi, Ali Bijani, Fatima Bijani
Format: Article
Language:English
Published: BMC 2025-01-01
Series:BMC Oral Health
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Online Access:https://doi.org/10.1186/s12903-025-05522-4
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author Maryam Mahdizadeh
Nazanin Mahdavi
Ali Bijani
Fatima Bijani
author_facet Maryam Mahdizadeh
Nazanin Mahdavi
Ali Bijani
Fatima Bijani
author_sort Maryam Mahdizadeh
collection DOAJ
description Abstract Background Calretinin is a 29 kilodalton (KDa) calcium-binding protein that is expressed in normal and tumoral tissues. The expression of calretinin has been shown in the dental epithelium during odontogenesis and in different odontogenic cysts and tumors such as ameloblastoma. Since the epithelium of calcifying odontogenic cyst (COC) is similar to ameloblastoma and in both lesions, an arrangement of loose cells similar to stellate reticulum is seen, we aimed to investigate the comparative expression of calretinin in COC and ameloblastoma. Methods In this observational-analytical study, 11 paraffin blocks of each lesion were examined. The immunohistochemical expression of calretinin and its severity and distribution were evaluated. Data were evaluated using SPSS version 26 and P < 0.05 was considered the level of significance. Results Out of 11 ameloblastoma samples, calretinin staining was positive in 6 samples in the stellate reticulum-like cells and also in the lining of microcysts and macrocysts in some cases. Ameloblast like cells did not show staining. In COC samples, epithelial cells were not stained, but in 8 samples, staining was seen in the area of ghost cells. There was no significant difference in staining between ameloblastoma and COC (P = 0.33), but the difference in staining in the stellate reticulum of ameloblastoma and COC was significant. (P = 0.012). Conclusions it is concluded that calretinin does not play a role in the pathogenesis and histogenesis of COC epithelium, but since ghost cells are caused by a degenerative process, the possibility of involving calretinin as an apoptotic factor in the formation of these cells is supported.
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spelling doaj-art-ec2112dc45f841ceb6e8f91f43e848a72025-02-02T12:45:16ZengBMCBMC Oral Health1472-68312025-01-012511710.1186/s12903-025-05522-4Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastomaMaryam Mahdizadeh0Nazanin Mahdavi1Ali Bijani2Fatima Bijani3Student Research Committee, Babol University of Medical SciencesDepartment of Oral and Maxillofacial Pathology, School of Dentistry, Tehran University of Medical SciencesSocial Determinats of Health Research Center, Health Research Institute, Babol University of Medical SciencesOral Health Research Center, Health Research Institute, Babol University of Medical SciencesAbstract Background Calretinin is a 29 kilodalton (KDa) calcium-binding protein that is expressed in normal and tumoral tissues. The expression of calretinin has been shown in the dental epithelium during odontogenesis and in different odontogenic cysts and tumors such as ameloblastoma. Since the epithelium of calcifying odontogenic cyst (COC) is similar to ameloblastoma and in both lesions, an arrangement of loose cells similar to stellate reticulum is seen, we aimed to investigate the comparative expression of calretinin in COC and ameloblastoma. Methods In this observational-analytical study, 11 paraffin blocks of each lesion were examined. The immunohistochemical expression of calretinin and its severity and distribution were evaluated. Data were evaluated using SPSS version 26 and P < 0.05 was considered the level of significance. Results Out of 11 ameloblastoma samples, calretinin staining was positive in 6 samples in the stellate reticulum-like cells and also in the lining of microcysts and macrocysts in some cases. Ameloblast like cells did not show staining. In COC samples, epithelial cells were not stained, but in 8 samples, staining was seen in the area of ghost cells. There was no significant difference in staining between ameloblastoma and COC (P = 0.33), but the difference in staining in the stellate reticulum of ameloblastoma and COC was significant. (P = 0.012). Conclusions it is concluded that calretinin does not play a role in the pathogenesis and histogenesis of COC epithelium, but since ghost cells are caused by a degenerative process, the possibility of involving calretinin as an apoptotic factor in the formation of these cells is supported.https://doi.org/10.1186/s12903-025-05522-4Calbindin 2AmeloblastomaOdontogenic cystCalcifying
spellingShingle Maryam Mahdizadeh
Nazanin Mahdavi
Ali Bijani
Fatima Bijani
Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
BMC Oral Health
Calbindin 2
Ameloblastoma
Odontogenic cyst
Calcifying
title Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
title_full Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
title_fullStr Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
title_full_unstemmed Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
title_short Comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
title_sort comparative evaluation of calretinin immunohistochemical expression in calcifying odontogenic cyst and ameloblastoma
topic Calbindin 2
Ameloblastoma
Odontogenic cyst
Calcifying
url https://doi.org/10.1186/s12903-025-05522-4
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AT nazaninmahdavi comparativeevaluationofcalretininimmunohistochemicalexpressionincalcifyingodontogeniccystandameloblastoma
AT alibijani comparativeevaluationofcalretininimmunohistochemicalexpressionincalcifyingodontogeniccystandameloblastoma
AT fatimabijani comparativeevaluationofcalretininimmunohistochemicalexpressionincalcifyingodontogeniccystandameloblastoma