KAI-1 ad p53 Expression in Odontogenic Cysts: An Immunohistochemical Marker Study

2018 ◽  
Vol 7 (2) ◽  
pp. 62 ◽  
Author(s):  
AbhishekSingh Nayyar ◽  
NamrataN Patil ◽  
Vijay Wadhwan ◽  
Minal Chaudhary ◽  
SanthoshD Reddy ◽  
...  
2017 ◽  
Vol 04 ◽  
pp. 1
Author(s):  
Namrata N. Patil ◽  
Vijay Wadhwan ◽  
Minal Chowdhary ◽  
Abhishek Singh Nayyar ◽  
◽  
...  

Background: KAI-1/CD82 is a tumour suppressor gene; decreased gene expression is associated with the increased invasive ability of oral squamous cell carcinoma (OSCC), as hypothesised for various odontogenic cysts and tumours. p53 protein functions in the G1-S phase of the cell cycle to allow repair of the damaged DNA. In the present study, p53 and KAI-1 expression was investigated by using monoclonal antibodies in the various odontogenic cysts. Aims: To detect KAI-1 and p53 expression in radicular cysts, dentigerous cysts and odontogenic keratocysts (OKCs) and to assess the relation between p53 and KAI-1 expression in the aforementioned cysts. Materials and Methods: The present study included histopathologically diagnosed cases of radicular cysts, dentigerous cysts and OKCs for the expression of KAI-1 and p53 antibodies. Results: Amongst odontogenic cysts, radicular cysts expressed a maximum positivity of KAI-1 (20.92%) while p53 positive cells were maximum in odontogenic keratocysts (4.04%). The correlation between KAI-1 and p53 expression in the various odontogenic cysts was not found to be significant. Conclusion: The increased KAI-1 expression in the radicular cysts and its downregulation in OKCs may be indicative of aggressive clinical behaviour and the fact that OKCs are hypothesised as neoplastic rather than being developmental in origin.


2017 ◽  
Vol 6 (2) ◽  
pp. 44-50
Author(s):  
Namrata Patil ◽  
Vijay Wadhwan ◽  
Minal Chowdhary ◽  
Abhishek Singh Nayyar

2005 ◽  
Vol 28 (4) ◽  
Author(s):  
D. Tamiolakis ◽  
S. Nikolaidou ◽  
A. Kotini ◽  
T. Jivannakis ◽  
A. Efthimiadou ◽  
...  

2003 ◽  
Vol 111 (06) ◽  
Author(s):  
C Tanase ◽  
E Codorean ◽  
C Ardeleanu ◽  
D Terzea ◽  
G Butur ◽  
...  

2004 ◽  
Vol 83 (02) ◽  
Author(s):  
M Jaehne ◽  
BG Neumann ◽  
F Reitmeier ◽  
K Roeser
Keyword(s):  

2016 ◽  
Vol 46 (1) ◽  
pp. 53
Author(s):  
Azwar Azwar ◽  
Sofia Mubarika ◽  
Agus Surono

Latar belakang: Karsinoma sel skuamosa kepala dan leher merupakan salah satu kanker terseringdi seluruh dunia. Pendekatan pengobatan agresif dan multidisiplin telah dilakukan, namun belum adapeningkatan yang signifikan dalam kelangsungan hidup 5 tahun, selama 20 tahun terakhir. Kegagalanpengobatan terjadi dalam bentuk kekambuhan lokoregional, metastasis jauh, dan/atau tumor primer kedua.Berbagai penanda molekular tumor telah diteliti untuk mengetahui potensinya dalam memprediksi hasilpenyakit atau respon terhadap terapi.Tujuan: Mengetahui hubungan ekspresi protein p53, Bcl-2, c-Myc,dan MMP-9 berdasarkan gambaran klinikopatologis karsinoma sel skuamosa kepala dan leher di RumahSakit dr. Zainoel Abidin.Metode: Studi menggunakan desain cross sectional. Sampel terdiri dari 60blok parafin karsinoma sel skuamosa kepala dan leher. Prosedur pewarnaan imunohistokimia dilakukandengan menggunakan antibodi monoklonal terhadap p53, Bcl-2, c-Myc, dan MMP-9. Ekspresi proteinp53, Bcl-2, c-Myc, dan MMP-9 dianalisis secara imunohistokimia pada karsinoma sel skuamosa kepaladan leher kemudian hasilnya dihubungkan dengan parameter klinikopatologis seperti usia, jenis kelamin,lokasi tumor, diferensiasi tumor, metastasis kelenjar getah bening dan stadium tumor, kemudian dianalisisstatistik dengan Chi square.Hasil: Hasil penelitian menunjukkan terdapat hubungan bermakna tingkatekspresi p53 dengan metastasis lokal (p=0,021) dan ada hubungan bermakna tingkat ekspresi MMP-9dengan lokasi tumor (p=0,026). Tidak terdapat hubungan ekspresi p53, Bcl-2, cMyc, dan MMP-9 terhadapusia, jenis kelamin, stadium tumor, diferensiasi histologi, tingkat T, N, dan metastasis jauh.Kesimpulan:Ada hubungan ekpresi p53 dengan metastasis kelenjar limfe regional dan ekspresi MMP-9 dengan lokasitumor pada karsinoma sel skuamosa kepala dan leher. Kata kunci: Karsinoma sel skuamosa kepala dan leher, p53, Bcl-2, c-Myc, MMP-9 ABSTRACTBackground: Head and neck squamous cell carcinoma (HNSCC) is one of the most commoncancers world wide. Although aggressive and multidisciplinary approach to the treatment has been done,there is no significant improvement in 5-year survival in the last 20 years. Treatment failure occurredin the form of locoregional recurrence, distant metastasis, and/or a second primary tumor. A variety oftumor molecular markers have been studied to determine their potential in predicting disease outcome orresponse to the therapy. Purpose: To investigate correlation p53, Bcl-2, c-Myc, and MMP-9 expressionto clinicopathologic parameter in head and neck squamous cell carcinoma patient in dr. Zainoel Abidinhospital. Methods: Cross sectional design study. The sample was consisted of 60 paraffin blocks ofhead and neck squamous cell carcinoma. Procedure of immunohistochemical staining used monoclonalantibodies against p53, Bcl-2, c-Myc, and MMP-9. Expression of p53 protein, Bcl-2, c-Myc, and MMP-9were analyzed by immunohistochemistry in head and neck squamous cell carcinoma. Then, the results were linked to clinicopathologic parameters such as age, sex, tumor location, tumor differentiation,lymph node metastasis and tumor stage, and statistically analyzed with Chi square. Results: The resultsshowed there were significant correlation between p53 expression level with local metastasis (p=0,021)and significant correlation of MMP-9 expression levels with tumor location (p=0,026). There were norelationship of p53, Bcl-2, cMyc and MMP-9 expressions based on age, sex, stage tumor, histologicdifferentiation, level of T, N, and distant metastases. Conclusion: There were relationships between p53expression with local metastasis and MMP-9 expression with tumor location in head and neck squamouscell carcinoma. Keywords: Head and neck squamous cell carcinoma, p53, Bcl-2, c-Myc, MMP-9


2019 ◽  
Vol 2 (02) ◽  
pp. 80-89
Author(s):  
Blanca De Unamuno Bustos ◽  
Natalia Chaparr´´o Aguilera ◽  
Inmaculada Azorín García ◽  
Anaid Calle Andrino ◽  
Margarita Llavador Ros ◽  
...  

Actinic keratosis (AKs) are part of the cancerization field, a region adjacent to AKs containing subclinical and histologically abnormal epidermal tissue due to Ultraviolet (UV)-induced DNA damage. The photoproducts as consequence of DNA damage induced by UV are mainly cyclobutane pyrimidine dimers (CPDs). Fernblock® demonstrated in previous studies significant reduction of the number of CPDs induced by UV radiation. Photolyases are a specific group of enzymes that remove the major UV-induced DNA lesions by a mechanism called photo-reactivation. A monocentric, prospective, controlled, and double blind interventional study was performed to evaluate the effect of a new medical device (NMD) containing a DNA-repair enzyme complex (photolyases, endonucleases and glycosilases), a combination of UV-filters, and Fernblock® in the treatment of the cancerization field in 30 AK patients after photodynamic therapy. Patients were randomized into two groups: patients receiving a standard sunscreen (SS) andpatients receiving the NMD. Clinical, dermoscopic, reflectance confocal microscopy (RCM) and histological evaluations were performed. An increase of AKs was noted in all groups after three months of PDT without significant differences between them (p=0.476). A significant increase in the number of AKs was observed in SS group after six (p=0.026) and twelve months of PDT (p=0.038); however, this increase did not reach statistical significance in the NMD group. Regarding RCM evaluation, honeycomb pattern assessment after twelve months of PDT showed significant differences in the extension and grade of the atypia in the NMD group compared to SS group (p=0.030 and p=0.026, respectively). Concerning histopathological evaluation, keratinocyte atypia grade improved from baseline to six months after PDT in all the groups, with no statistically significant differences between the groups. Twelve months after PDT, p53 expression was significantly lower in the NMD group compared to SS group (p=0.028). The product was well-tolerated, with no serious adverse events reported. Our results provide evidence of the utility of this NMD in the improvement of the cancerization field and in the prevention of the development of new AKs.  


Sign in / Sign up

Export Citation Format

Share Document