نتایج جستجو برای: odontogenic epithelium

تعداد نتایج: 73441  

2013
Kristiina Heikinheimo Risto-Pekka Happonen

Dysregulation of TGF,62, a modulator of cell growth and differentiation, can result in uncontrolled growth and tumor formation. Our comparative studies on the expression of TGF (2 mRNA and protein indicate that TGF (2 may primarily be a regulator of epithelial differentiation during tooth development (between 13 and 20 gestational wk) and tumorigenesis of odontogenic neoplasms. A paracrine mode...

Journal: :The Journal of clinical investigation 1993
K Heikinheimo R P Happonen P J Miettinen O Ritvos

Dysregulation of TGF beta 2, a modulator of cell growth and differentiation, can result in uncontrolled growth and tumor formation. Our comparative studies on the expression of TGF beta 2 mRNA and protein indicate that TGF beta 2 may primarily be a regulator of epithelial differentiation during tooth development (between 13 and 20 gestational wk) and tumorigenesis of odontogenic neoplasms. A pa...

Journal: :Histology and histopathology 1996
L Domenici-Lombardo F Amunni M Bergamini P Romagnoli

Light and electron microscopy were used to analyze the epithelial lining of odontogenic cysts excised from edentulous regions of the jaws. Clinically, three cases were identified as keratocysts, and 21 cases as cysts other than keratocysts ("non-keratocysts"). The epithelium of the former was found to achieve keratinization over most of the surface and to never contain mucus secreting cells. Th...

Journal: :Dentistry 3000 2022

Purpose: Odontogenic cysts and tumors comprise a major component of lesions the oral maxillofacial region. The pathogenesis these involves interaction between odontogenic epithelium ectomesenchyme. However, clinical behavior biological entities is unpredictable. aim this study was to evaluate role Cyclooxygenase 2 (COX-2) in prognostication lesions.Material method: : In formalin-fixed paraffin-...

Journal: :Archives of dental research 2023

An adenomatoid odontogenic tumour (AOT) is a unique and somewhat uncommon that only arises from epithelium makes up between 2 7% of all tumours cysts. The lesion categorised into three variants, the most common which follicular type, frequently presents as dentigerous cyst clinically because it surrounds an impacted tooth. Because lesion's well-known ability to take on various clinical histopat...

2012
Jelena Stepić Marko Pejović Snježana Čolić

Paradental cysts are rare cystic lesions that develop on buccal, distal and rarely mesial side of the mandibular permanent molars in the period of their eruption. They belong to the group of inflammatory cysts and constitute less than 5% of all odontogenic cysts [1]. Most often they are associated with recurrent pericoronitis of semi-impacted wisdom teeth (61.4%) at the time of their eruption, ...

Journal: :The Journal of Nihon University School of Dentistry 1995

Journal: :The Journal of Cell Biology 2004
Satoshi Fukumoto Takayoshi Kiba Bradford Hall Noriyuki Iehara Takashi Nakamura Glenn Longenecker Paul H. Krebsbach Antonio Nanci Ashok B. Kulkarni Yoshihiko Yamada

Tooth morphogenesis results from reciprocal interactions between oral epithelium and ectomesenchyme culminating in the formation of mineralized tissues, enamel, and dentin. During this process, epithelial cells differentiate into enamel-secreting ameloblasts. Ameloblastin, an enamel matrix protein, is expressed by differentiating ameloblasts. Here, we report the creation of ameloblastin-null mi...

2014
Maria Pavli Elena Farmaki Stavroula Merkourea Helen Vastardis Alexandra Sklavounou Fotios Tzerbos Ioulia Chatzistamou

OBJECTIVES Odontogenic keratocysts (OKCs) are developmental cysts that have been reclassified according World Health Organization (WHO), to keratocystic odontogenic tumours (KCOTs), a term that better reflects their neoplastic nature. The aim of present study is to evaluate the induction of stress of the endoplasmic reticulum and execution of the resulting unfolded protein response in keratinoc...

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