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Ghosh B, Chatterjee J, Paul RR, Acuña S, Lahiri P, Pal M, Mitra P, Agarwal K. Molecular histopathology of matrix proteins through autofluorescence super-resolution microscopy. Sci Rep 2024; 14:10524. [PMID: 38719976 PMCID: PMC11078950 DOI: 10.1038/s41598-024-61178-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 05/02/2024] [Indexed: 05/12/2024] Open
Abstract
Extracellular matrix diseases like fibrosis are elusive to diagnose early on, to avoid complete loss of organ function or even cancer progression, making early diagnosis crucial. Imaging the matrix densities of proteins like collagen in fixed tissue sections with suitable stains and labels is a standard for diagnosis and staging. However, fine changes in matrix density are difficult to realize by conventional histological staining and microscopy as the matrix fibrils are finer than the resolving capacity of these microscopes. The dyes further blur the outline of the matrix and add a background that bottlenecks high-precision early diagnosis of matrix diseases. Here we demonstrate the multiple signal classification method-MUSICAL-otherwise a computational super-resolution microscopy technique to precisely estimate matrix density in fixed tissue sections using fibril autofluorescence with image stacks acquired on a conventional epifluorescence microscope. We validated the diagnostic and staging performance of the method in extracted collagen fibrils, mouse skin during repair, and pre-cancers in human oral mucosa. The method enables early high-precision label-free diagnosis of matrix-associated fibrotic diseases without needing additional infrastructure or rigorous clinical training.
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Affiliation(s)
- Biswajoy Ghosh
- Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
- UiT - The Arctic University of Norway, 9019, Tromsø, Norway.
| | | | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, 700114, India
| | | | - Pooja Lahiri
- Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, 700114, India
| | - Pabitra Mitra
- Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Krishna Agarwal
- UiT - The Arctic University of Norway, 9019, Tromsø, Norway.
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Dutta A, Mukherjee K, Seesala VS, Dutta K, Paul RR, Dhara S, Gupta S. Comparative evaluation of a patient-specific customised plate designs and screws for partial mandibular reconstruction. Med Eng Phys 2023; 111:103941. [PMID: 36792242 DOI: 10.1016/j.medengphy.2022.103941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/27/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
Mandibles with odontogenic tumors are often partially reconstructed with a metallic bone graft analogue with dental roots, crowns, along with a customized plate fixed with monocortical or bicortical screws, following resection of the tumor. In this study, two different designs of patient specific customized Ti reconstruction plates, solid and plate with holes, were considered. Fixation through both bicortical and monocortical screw types were investigated. FE models of the reconstructed mandibles were developed to analyse the influence of the plate-screw type combination on the load transfer across the mandibles under a mastication cycle. The effective homogenized orthotropic material properties of the lattice structures with 0.6 mm fibre diameter with 0.5 mm inter-fibre space were assigned to material properties for the bone graft analogue. The study shows that the combination of plate and screw types influences the state of stresses in the reconstructed mandible. Based on the results of this patient specific study, following resection of the tumor, either solid Ti plate with bicortical screws or Ti plate with holes along with monocortical screws may be used for partial mandibulectomy. It should also be noted that stresses in none of the plates or screws exceeded the yield limit for Ti under the mastication cycle indicating that the components are safe for mandibular reconstruction. However, the choice of this combination of reconstruction plates and screws is dependant on the condition and severity of the tumor in the diseased mandible.
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Affiliation(s)
- Abir Dutta
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India
| | - Kaushik Mukherjee
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India; Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
| | - Venkata Sundeep Seesala
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India
| | - Kaushik Dutta
- Gurunanak Institute of Dental Science and Research, Department of Oral and Maxillofacial Pathology, Kolkata, West Bengal 700 114, India
| | - Ranjan Rashmi Paul
- Gurunanak Institute of Dental Science and Research, Department of Oral and Maxillofacial Pathology, Kolkata, West Bengal 700 114, India
| | - Santanu Dhara
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India
| | - Sanjay Gupta
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721 302, India
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Chakraborti S, Paul RR, Pal M, Chatterjee J, Das RK. Collagen deposition correlates with loss of E-cadherin and increased p63 expression in dysplastic conditions of oral submucous fibrosis. Med Mol Morphol 2021; 55:20-26. [PMID: 34482436 DOI: 10.1007/s00795-021-00304-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/30/2021] [Indexed: 11/26/2022]
Abstract
This paper focuses on the status of epithelial markers, E-cadherin, and p63 in the backdrop of an abnormal amount of collagen in the sub-mucosa of dysplastic and non-dysplastic grades of OSF. Histologically confirmed OSF and normal oral mucosa samples were procured. Samples were stained by Van Gieson's stain (VG) and immunohistochemistry. The captured images were analyzed by ImageJ software to quantify their grayscale intensities. There was a gradual increase in the intensity of VG stain from normal to non-dysplastic and dysplastic OSF and the differences in their mean grayscale values were found to be significant (p < 0.00001). The intensity of E-cadherin was found to be the highest in non-dysplastic conditions and lowest in dysplastic conditions. The intensity difference of E-cadherin between normal and non-dysplastic OSF was found to be significant (p < 0.00001). The grayscale scale intensity values for p63 in whole epithelium depicted significant differences between normal and diseased conditions but for its intensity, in basal cells, significant differences were found between non-dysplastic and other classes of tissues. There was a positive correlation observed between VG and p63 staining intensity. The diseased oral epithelium demonstrated greater deposition of sub-epithelial collagen fibers along with subsequent loss of E-cadherin and an increased p63 expression.
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Affiliation(s)
- Sourangshu Chakraborti
- Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology (IIT), Kharagpur, West Bengal, India
| | - Raunak Kumar Das
- Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu, India.
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Lahiri P, Mukherjee S, Ghosh B, Das D, Lahiri B, Varshney SK, Pal M, Paul RR, Chatterjee J. Comprehensive Evaluation of PAXgene Fixation on Oral Cancer Tissues Using Routine Histology, Immunohistochemistry, and FTIR Microspectroscopy. Biomolecules 2021; 11:biom11060889. [PMID: 34203873 PMCID: PMC8232633 DOI: 10.3390/biom11060889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/06/2021] [Accepted: 06/10/2021] [Indexed: 11/25/2022] Open
Abstract
The choice of tissue fixation is critical for preserving the morphology and biochemical information of tissues. Fragile oral tissues with lower tensile strength are challenging to process for histological applications as they are prone to processing damage, such as tissue tear, wrinkling, and tissue fall-off from slides. This leads to loss of morphological information and unnecessary delay in experimentation. In this study, we have characterized the new PAXgene tissue fixation system on oral buccal mucosal tissue of cancerous and normal pathology for routine histological and immunohistochemical applications. We aimed to minimize the processing damage of tissues and improve the quality of histological experiments. We also examined the preservation of biomolecules by PAXgene fixation using FTIR microspectroscopy. Our results demonstrate that the PAXgene-fixed tissues showed significantly less tissue fall-off from slides. Hematoxylin and Eosin staining showed comparable morphology between formalin-fixed and PAXgene-fixed tissues. Good quality and slightly superior immunostaining for cancer-associated proteins p53 and CK5/6 were observed in PAXgene-fixed tissues without antigen retrieval than formalin-fixed tissues. Further, FTIR measurements revealed superior preservation of glycogen, fatty acids, and amide III protein secondary structures in PAXgene-fixed tissues. Overall, we present the first comprehensive evaluation of the PAXgene tissue fixation system in oral tissues. This study concludes that the PAXgene tissue fixation system can be applied to oral tissues to perform diagnostic molecular pathology experiments without compromising the quality of the morphology or biochemistry of biomolecules.
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Affiliation(s)
- Pooja Lahiri
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (S.M.); (B.G.); (D.D.); (J.C.)
- Correspondence:
| | - Suranjana Mukherjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (S.M.); (B.G.); (D.D.); (J.C.)
| | - Biswajoy Ghosh
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (S.M.); (B.G.); (D.D.); (J.C.)
| | - Debnath Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (S.M.); (B.G.); (D.D.); (J.C.)
| | - Basudev Lahiri
- Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (B.L.); (S.K.V.)
| | - Shailendra Kumar Varshney
- Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (B.L.); (S.K.V.)
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research (GNIDSR), Kolkata 700114, India;
| | - Ranjan Rashmi Paul
- Department of Oral & Dental Sciences, JIS University, Kolkata 700109, India;
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India; (S.M.); (B.G.); (D.D.); (J.C.)
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Das M, Das A, Barui A, Paul RR. Comparative evaluation of proliferative potential and replicative senescence associated changes in mesenchymal stem cells derived from dental pulp and umbilical cord. Cell Tissue Bank 2021; 23:157-170. [PMID: 33900487 DOI: 10.1007/s10561-021-09926-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 04/12/2021] [Indexed: 12/29/2022]
Abstract
Mesenchymal stem cells (MSC) have been widely studied for tissue regeneration and cell-based therapy. MSC can be isolated from different body tissues while several biological waste sources like dental pulp, umbilical cord, cord derived blood, amniotic fluid or urine have also emerged as potential sources of MSCs. Specifically, isolation of MSCs from such non-conventional sources show promising outcomes due to the non-invasiveness of the extraction process and high proliferation capacity of the isolated MSC. However, these stem cells also exhibit the limitation of replicative senescence in long-term culture condition. Inter-cellular reactive oxygen species is an important contributor for inducing cellular senescence under long-term culture conditions. For translational application, it becomes imperative to compare the stem cells isolated from these sources for their senescence and proliferative properties. In this study, MSC were extracted from two different sources of biological waste materials-dental pulp and umbilical cord, and compared for their proliferation capacity and replicative senescence at different passage numbers (i.e. P2 and P6). Intracellular ROS production was significantly (p < 0.001) less in dental pulp stem cells culture in comparison to umbilical cord-derived stem cells at P6. The β-gal expression also showed significantly (p < 0.001) low expression in DPSC culture compared to that of UCSC at P6. The study indicates the source of stem cells influences the proliferation capacity as well as replicative senescence of MSCs. This study will thus pave the path of future research in selecting appropriate stem cell source for regenerative medicine application.
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Affiliation(s)
- Monalisa Das
- Department of Oral and Dental Sciences, JIS University, Kolkata, India
| | - Ankita Das
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, West Bengal, India
| | - Ananya Barui
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, West Bengal, India.
| | - Ranjan Rashmi Paul
- Department of Oral and Dental Sciences, JIS University, Kolkata, India. .,Department of Oral and Dental Sciences, Guru Nanak Institute of Dental Sciences and Research, JIS University, Kolkata, India.
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Ghosh B, Bhandari A, Mandal M, Paul RR, Pal M, Mitra P, Chatterjee J. Quantitative in situ imaging and grading of oral precancer with attenuation corrected-optical coherence tomography. Oral Oncol 2021; 117:105216. [PMID: 33608211 DOI: 10.1016/j.oraloncology.2021.105216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Biswajoy Ghosh
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India.
| | | | - Mousumi Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | | | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, India
| | - Pabitra Mitra
- Department of Computer Science and Engineering, Indian Institute of Technology Kharagpur, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
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Nawn D, Pratiher S, Chattoraj S, Chakraborty D, Pal M, Paul RR, Dutta S, Chatterjee J. Multifractal Alterations in Oral Sub-Epithelial Connective Tissue During Progression of Pre-Cancer and Cancer. IEEE J Biomed Health Inform 2021; 25:152-162. [PMID: 32750913 DOI: 10.1109/jbhi.2020.2997875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Bright-field microscopy (BFM) encrypts the optical transillumination profile of the transmitted light attenuated by the complex micro-structural tissue convolutions, manifested by the dense and compact regions of the specimen under examination. The connotations of idiosyncratic tissue interaction dynamics with the onset of pre-cancerous activity are encoded in the BFM acquired oral mucosa histopathological images (OMHI). In the present study, our analysis is focused on the sub-epithelium region of the oral mucosa, which has high clinical significance but sparsely explored in the literature from the textural domain. Histopathology being the gold-standard technique till date, we have used the light microscopic histopathology images for tissue characterization. The tissue-index transmission patches (TITP) from the sub-epithelium region are cropped under the guidance of oral onco-pathologists. After that, the TITPs are characterized for its multi-scale spatial-deformation dynamics, while keeping the intrinsic anisotropic geometry, and local contour connectivity within tolerable limits. With recent studies exhibiting multifractal's potency in diverse biological system analysis, here, we exploit the 2D multifractal detrended fluctuation analysis (2D-MFDFA) on TITPs for exploring a discriminative set of multifractal signatures for healthy, oral potentially malignant disorders and oral cancer tissue sample. The predictive model's competency is validated on an experimentally collected corpus of TITP samples and substantiated via confirmatory data statistics and analysis, showing its inter-class segregation efficacy. Moreover, the 2D-MFDFA analysis evinces the complex multifractal patterns in TITPs, which is due to the presence of composite long-range correlations in the oral mucosa tissue fabric.
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Chatterjee R, Ghosh B, Mandal M, Nawn D, Banerjee S, Pal M, Paul RR, Banerjee S, Chatterjee J. Pathophysiological relationship between hypoxia associated oxidative stress, Epithelial-mesenchymal transition, stemness acquisition and alteration of Shh/ Gli-1 axis during oral sub-mucous fibrosis and oral squamous cell carcinoma. Eur J Cell Biol 2020; 100:151146. [PMID: 33418093 DOI: 10.1016/j.ejcb.2020.151146] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023] Open
Abstract
Oral sub-mucous fibrosis (OSF) is a pathophysiological state of oral cavity or oropharynx having a high chance of conversion to oral squamous cell carcinoma (OSCC). It involves fibrotic transformation of sub-epithelial matrix along with epithelial abnormalities. The present work aims to unveil the mechanistic domain regarding OSF to OSCC conversion exploring the scenario of hypoxia associated oxidative stress, epithelial-mesenchymal transition (EMT), metastasis and stemness acquisition. The study involves histopathological analysis of the diseased condition along with the exploration of oxidative stress status, assessment of mitochondrial condition, immunohistochemical analysis of HIF-1α, E-cadherin, vimentin, ERK, ALDH-1, CD133, Shh, Gli-1 and survivin expressions in the oral epithelial region together with the quantitative approach towards collagen deposition in the sub-epithelial matrix. Oxidative stress was found to be associated with type-II EMT in case of OSF attributing the development of sub-epithelial fibrosis and type-III EMT in case of OSCC favoring malignancy associated metastasis. Moreover, the acquisition of stemness during OSCC can also be correlated with EMT. Alteration of Shh and Gli-1 expression pattern revealed the mechanistic association of hypoxia with the phenotypic plasticity and disease manifestation in case of OSF as well as OSCC. Shh/ Gli-1 signaling can also be correlated with survivin mediated cytoprotective phenomenon under oxidative stress. Overall, the study established the correlative network of hypoxia associated oxidative stress, EMT and manifestation of oral pre-cancerous and cancerous condition in a holistic approach that may throw rays of hope in the therapeutic domain of the concerned diseases.
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Affiliation(s)
- Ritam Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
| | - Biswajoy Ghosh
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Mousumi Mandal
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Debaleena Nawn
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Satarupa Banerjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India; School of Bioscience and Technology, Vellore Institute of Technology, Vellore, Tamilnadu 632014, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114 West Bengal, India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114 West Bengal, India
| | | | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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Nag R, Paul RR, Pal M, Chatterjee J, Das RK. Epithelial Distribution of E-Cadherin, p63, and Mitotic Figures in ApoTome Images to Determine the Oncogenic Potentiality of Oral Submucous Fibrosis. Microsc Microanal 2020; 26:1198-1210. [PMID: 33050978 DOI: 10.1017/s1431927620024538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The exact process of the malignant conversion of oral submucous fibrosis (OSF) to oral cancer is not fully understood. This study aimed to detect and analyze E-cadherin expression, p63 expression, and number of mitotic figures, all correlated to cancer development, in ApoTome images of oral tissues to determine the oncogenic potentiality of OSF. ApoTome images of the study groups (6 normal, 16 OSF with dysplasia, and 10 OSF without dysplasia) were recorded. Cytoplasmic and membranous E-cadherin expression, breakages of the cell membrane, and p63 expression were detected in MATLAB 2016b. The number of mitotic figures detected by MATLAB was correlated with the number of chromosomes detected by ImageJ. A Mann–Whitney U test was done to determine a significant difference between the study groups for cytoplasmic and membranous E-cadherin distribution points. Statistical significant differences were found for cytoplasmic E-cadherin distribution between normal and OSF (with dysplasia) (p = 0.0278). There was an increase in mitotic figures, p63 expression, and cytoplasmic E-cadherin expression and a decrease in membranous E-cadherin expression from normal to diseased condition. Hence, automated detection and quantification of E-cadherin, p63, and mitotic figures in ApoTome images of oral biopsies can help in determining the oncogenic potentiality of OSF.
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Affiliation(s)
- Reetoja Nag
- Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology, Room No. 402, ALM Building, Vellore632014, Tamil Nadu, India
| | - Ranjan Rashmi Paul
- Gurunanak Institute of Dental Sciences and Research, Panihati700114, West Bengal, India
| | - Mousumi Pal
- Gurunanak Institute of Dental Sciences and Research, Panihati700114, West Bengal, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur721302, West Bengal, India
| | - Raunak Kumar Das
- Centre for Biomaterials, Cellular and Molecular Theranostics, Vellore Institute of Technology, Room No. 402, ALM Building, Vellore632014, Tamil Nadu, India
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Pal M, Nawn D, Lahiri P, Das D, Paul RR, Chakraborty D. Malignant potentiality assessment of oral submucous fibrosis through semi-quantitative approach. J Oral Maxillofac Pathol 2020; 24:188. [PMID: 32508480 PMCID: PMC7269314 DOI: 10.4103/jomfp.jomfp_297_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 01/29/2020] [Indexed: 12/02/2022] Open
Abstract
Background: In the context of early diagnosis and prevention of oral cancer, precise assessment of malignant potentiality of the oral potentially malignant disorders, particularly oral submucous fibrosis (OSF) is crucial. Till date, the assessment of malignant potentiality suffers from predictive ambiguity due to the lack of precision in the gold standard techniques. This can be addressed by integrating heuristic domain knowledge with quantitative analysis. Aim: The aim of this study is to propose an index for enhancing accuracy in malignant potentiality evaluation. Materials and Methods: The present study analyzes important histomorphometric attributes (epithelial thickness, basal cell nuclear size, nuclear-to-cytoplasmic area ratio of basal cells, chromaticity of basal cell nucleus, thickness of basement membrane, ratio of vasculature in juxta-epithelial connective tissue [i.e., area covered by blood vessels/total area], collagen density in the lamina propria) of oral mucosa in dysplastic and nondysplastic OSF in association with relevant oncopathological appreciations (weightage of different features as suggested by oral pathologists) toward proposing a “Malignant Potentiality Index” (MPI). Results: Analysis of variance and notch box plot analysis depict statistically significant differences (P < 0.0001) in the histopathological features among different study groups (normal oral mucosa, OSF without dysplasia, OSF with dysplasia). Histopathological observation of one OSF patient with calculated MPI is shown. Conclusion: This newly proposed diagnostic cum prognostic decision-making parameter, the “MPI” may bring a value addition to the conventional diagnostic gold standard.
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Affiliation(s)
- Mousumi Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kharagpur, West Bengal, India
| | - Debaleena Nawn
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Pooja Lahiri
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Debnath Das
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kharagpur, West Bengal, India
| | - Debjani Chakraborty
- Department of Mathematics, Indian Institute of Technology, Kharagpur, West Bengal, India
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Dutta A, Mukherjee K, Seesala VS, Dutta K, Paul RR, Dhara S, Gupta S. Load transfer across a mandible during a mastication cycle: The effects of odontogenic tumour. Proc Inst Mech Eng H 2020; 234:486-495. [PMID: 32022650 DOI: 10.1177/0954411920904618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The extent to which load transfer in a diseased mandible with odontogenic tumour might influence the potential risk of pathological fracture has scarcely been investigated. The study sought to investigate the quantitative deviations in load transfer across healthy and cancer-affected (diseased) mandibles having odontogenic tumours. The effect of size of the tumours (small: 9 mm diameter, large: 19 mm diameter), and variation in bone mechanical (elastic) properties of the mandible on load transfer in cancer-affected mandibles during a mastication cycle have been investigated. Based on patient-specific computed tomography-scan datasets, detailed three-dimensional finite element models of healthy and diseased mandibles were developed. High stresses of 25-30 MPa and strains ∼700 µε were observed in the healthy mandible during the right molar bite. However, marginal deviations were observed in principal stress distributions in the diseased mandibles with small- and large-sized tumours, as compared to the healthy mandible. Maximum principal strains of ∼1474 µε were found in the body region adjacent to the symphysis region for small-sized tumour. Whereas for large-sized tumour, maximum strains of ∼2700 µε were observed in the right buccal regions. Reduction in Young's modulus due to different stages of odontogenic tumours had a localised effect on the principal stress distributions, but triggered an abrupt increase in the principal tensile strains. It appears that there is a potential risk of pathological fracture for large-sized odontogenic tumour, owing to high tensile stresses and strains.
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Affiliation(s)
- Abir Dutta
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Kaushik Mukherjee
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India.,Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Venkata Sundeep Seesala
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Kaushik Dutta
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Science and Research, Kolkata, India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Science and Research, Kolkata, India
| | - Santanu Dhara
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Sanjay Gupta
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
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Nawn D, Chatterjee S, Anura A, Bag S, Chakraborty D, Pal M, Paul RR, Chatterjee J. Elucidation of Differential Nano-Textural Attributes for Normal Oral Mucosa and Pre-Cancer. Microsc Microanal 2019; 25:1224-1233. [PMID: 31526400 DOI: 10.1017/s1431927619014867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Computational analysis on altered micro-nano-textural attributes of the oral mucosa may provide precise diagnostic information about oral potentially malignant disorders (OPMDs) instead of an existing handful of qualitative reports. This study evaluated micro-nano-textural features of oral epithelium from scanning electron microscopic (SEM) images and the sub-epithelial connective tissue from light microscopic (LM) and atomic force microscopic (AFM) images for normal and OPMD (namely oral sub-mucous fibrosis, i.e., OSF). Objective textural descriptors, namely discrete wavelet transform, gray-level co-occurrence matrix (GLCM), and local binary pattern (LBP), were extracted and fed to standard classifiers. Best classification accuracy of 87.28 and 93.21%; sensitivity of 93 and 96%; specificity of 80 and 91% were achieved, respectively, for SEM and AFM. In the study groups, SEM analysis showed a significant (p < 0.01) variation for all the considered textural descriptors, while for AFM, a remarkable alteration (p < 0.01) was only found in GLCM and LBP. Interestingly, sub-epithelial collagen nanoscale and microscale textural information from AFM and LM images, respectively, were complementary, namely microlevel contrast was more in normal (0.251) than OSF (0.193), while nanolevel contrast was more in OSF (0.283) than normal (0.204). This work, thus, illustrated differential micro-nano-textural attributes for oral epithelium and sub-epithelium to distinguish OPMD precisely and may be contributory in early cancer diagnostics.
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Affiliation(s)
- Debaleena Nawn
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Saunak Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Anji Anura
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Swarnendu Bag
- Tata Medical Center, Kolkata 700160, West Bengal, India
| | - Debjani Chakraborty
- Department of Mathematics, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114, West Bengal, India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114, West Bengal, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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Anura A, Kazi A, Pal M, Paul RR, Sengupta S, Chatterjee J. Endorsing cellular competitiveness in aberrant epithelium of oral submucous fibrosis progression: neighbourhood analysis of immunohistochemical attributes. Histochem Cell Biol 2018; 150:61-75. [DOI: 10.1007/s00418-018-1671-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2018] [Indexed: 12/14/2022]
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Biswas SN, Paul RR, Ray JG, Majumdar S, Uppala D. Quantitative assessment of silver-stained nucleolar organizer region in odontogenic cysts to correlate the growth and malignant potentiality. J Oral Maxillofac Pathol 2018; 21:460-461. [PMID: 29391734 PMCID: PMC5763882 DOI: 10.4103/jomfp.jomfp_181_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Context: The most common and important odontogenic cyst involving jaws is the odontogenic keratocyst (OKC) or primordial cyst, the dentigerous cyst and the radicular cyst. These cysts all though do not show similar behavior, they all have the potentiality to recur. Silver nitrate staining of the nucleolar organizer regions (AgNORs) of the benign and malignant lesions is becoming very useful as a diagnostic indicator. Thus, the aim of this study is to assess the diagnostic potential of AgNORs in the cystic epithelium of common odontogenic cysts. Materials and Methods: Archived specimens of odontogenic cysts were stained with hematoxylin and eosin stain and AgNOR stain. Results: The comparative evaluation of the AgNOR counts was done among the three varieties of odontogenic cysts, i.e., radicular cysts, dentigerous cysts and OKC and were observed that the mean for OKC was significantly higher than that of radicular cyst. Conclusion: Therefore, AgNor could be used as an efficient tool for comparative evaluation of microscopic features such as epithelial thickness, surface keratinization and mural proliferation in dentigerous cyst to that of the AgNOR count.
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Affiliation(s)
| | - R R Paul
- Department of Oral Pathology, Guru Nanak Dental College, Kolkata, West Bengal, India
| | - Jay Gopal Ray
- Department of Oral Pathology, Dr. R. Ahmed Dental College and Hospital, Kolkata, West Bengal, India
| | - Sumit Majumdar
- Department of Oral Pathology and Microbiology, GITAM Dental College, Visakhapatnam, Andhra Pradesh, India
| | - Divya Uppala
- Department of Oral Pathology, GITAM Dental College, Visakhapatnam, Andhra Pradesh, India
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Nag R, Raza H, Kumar S, Seal R, Banerjee A, Paul RR, Pal M, Chatterjee J, Das RK. Detection and analysis of abnormal nuclear changes in oral cytological smears by Papanicolaou staining. Cytopathology 2017; 29:112-114. [PMID: 29205596 DOI: 10.1111/cyt.12504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R Nag
- Centre for Biomaterials, Cellular, and Molecular Theranostics, VIT University, Vellore, India
| | - H Raza
- School of Biosciences and Technology, VIT University, Vellore, India
| | - S Kumar
- Department of Dental and Oral Surgery, Christian Medical College & Hospital, Vellore, India
| | - R Seal
- School of Biosciences and Technology, VIT University, Vellore, India
| | - A Banerjee
- School of Biosciences and Technology, VIT University, Vellore, India
| | - R R Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, India
| | - M Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata, India
| | - J Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, India
| | - R K Das
- Centre for Biomaterials, Cellular, and Molecular Theranostics, VIT University, Vellore, India.,School of Biosciences and Technology, VIT University, Vellore, India
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Sikdar N, Datta S, Dey B, Paul RR, Panda CK, Roy B. Homozygous Null Genotype at Glutathione S-transferase M1 Locus as a Risk Factor for Oral Squamous Cell Carcinoma in Indian Tobacco Users. INT J HUM GENET 2017. [DOI: 10.1080/09723757.2005.11885914] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nilabja Sikdar
- Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700 108, West Bengal, India
| | - Sila Datta
- Department of Oral Pathology and Microbiology, R. Ahmed Dental College and Hospital, Kolkata 700 014, West Bengal, India
| | - Badal Dey
- Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700 108, West Bengal, India
| | - Ranjan Rashmi Paul
- Department of Oral Pathology and Microbiology, R. Ahmed Dental College and Hospital, Kolkata 700 014, West Bengal, India
| | - Chinmay Kumar Panda
- Department of Oncogene Regulation, Chittaranjan National Cancer Institute, 37 S. P. Mukherjee Road, Kolkata 700 026, West Bengal, India
| | - Bidyut Roy
- Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700 108, West Bengal, India
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Bag S, Dutta D, Chaudhary A, Sing BC, Pal M, Ray AK, Banerjee R, Paul RR, Basak A, Das AK, Chatterjee J. Identification of α-enolase as a prognostic and diagnostic precancer biomarker in oral submucous fibrosis. J Clin Pathol 2017; 71:228-238. [PMID: 28821582 DOI: 10.1136/jclinpath-2017-204430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/30/2017] [Accepted: 07/03/2017] [Indexed: 11/03/2022]
Abstract
AIMS Diagnostic ambiguities regarding the malignant potentiality of oral submucous fibrosis (OSF), an oral precancerous condition having dysplastic and non-dysplastic isoforms are the major failure for early intervention of oral squamous cell carcinoma (OSCC) patients. Our goal is to identify proteomic signatures from biopsies that can be used as precancer diagnostic marker for patient suffering from OSF. METHODS The high throughput techniques adopting de novo peptide sequencing (1D SDS-PAGE coupled nanoLC MALDI tandem mass spectrometry (MS/MS)-based peptide mass fingerprint), immunohistochemistry (IHC), Western blot (WB) and real-time PCR (RT-PCR) analysis are considered for such biomarker identification and multilevel validations. RESULTS Alpha-enolase is identified as an overexpressed protein in biopsies of oral submucous fibrosis with dysplasia (OSFWD) compared with oral submucous fibrosis without dysplasia (OSFWT) and normal oral mucosa (NOM). Total proteome analysis of an overexpressed protein band around 47 kDa of OSFWD identifies 334 peptides corresponding to 61 human proteins. Among them α-enolase is identified as a prime protein with highest number of peptides (44 out of 334 peptides) and sequence coverage (66.4%). Furthermore, RT-PCR, WB and IHC analysis also show mRNA and tissue level upregulation of α-enolase in OSFWD validating α-enolase as precancer marker. CONCLUSIONS This study for the first time identifies and validates α-enolase as a novel biomarker for early diagnosis of malignant potentiality of OSF. Hence, the identified protein marker, α-enolase can help in early therapeutic intervention of OSF patients leading to the reduction of patient's pain, treatment cost and enhancement of patient's quality of life.
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Affiliation(s)
- Swarnendu Bag
- Department of Biotechnology, National Institute of Technology Sikkim, South Sikkim, India
| | - Debabrata Dutta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Amrita Chaudhary
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Bidhan Chandra Sing
- Department of Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, India
| | - Ajoy Kumar Ray
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Rita Banerjee
- Department of Science and Technology, New Delhi, India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, India
| | - Amit Basak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Amit Kumar Das
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
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Anura A, Das D, Pal M, Paul RR, Das S, Chatterjee J. Nanomechanical signatures of oral submucous fibrosis in sub-epithelial connective tissue. J Mech Behav Biomed Mater 2017; 65:705-715. [DOI: 10.1016/j.jmbbm.2016.09.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 09/02/2016] [Accepted: 09/12/2016] [Indexed: 11/15/2022]
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Sarkar R, Dey S, Pal M, Paul RR, Chatterjee J, RoyChaudhuri C, Barui A. Risk prediction for oral potentially malignant disorders using fuzzy analysis of cytomorphological and autofluorescence alterations in habitual smokers. Future Oncol 2016; 13:499-511. [PMID: 27855516 DOI: 10.2217/fon-2016-0382] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM This study aims to develop a novel noninvasive method for early cancer trend diagnosis in habitual smokers by corroborating cytomorphological and autofluorescence alterations. MATERIALS & METHODS A total of 120 subjects were included and categorized into nonsmoker, smoker and clinically diagnosed oral potentially malignant disorder (OPMD) patients. Oral exfoliative epithelial cells were studied through differential interference contrast and fluorescence microscopy. Fuzzy trend analysis was performed using measured parameters for determining the risk factors among smokers. RESULTS The risk assessment in this study showed a positive correlation of smoking duration with early cancer risk factors with a correlation co-efficient of 0.86. CONCLUSION Alterations in cellular morphology and autofluorescence intensities showed positive correlation with OPMD. The present study will benefit to investigate early prediction of OPMD among susceptible individuals.
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Affiliation(s)
- Ripon Sarkar
- Centre for Healthcare Science & Technology, Indian Institute of Engineering Science and Technology Shibpur, Howrah-711103, India
| | - Susmita Dey
- Centre for Healthcare Science & Technology, Indian Institute of Engineering Science and Technology Shibpur, Howrah-711103, India
| | - Mousumi Pal
- Department of Oral Medicine & Oral Radiology, Guru Nanak Institute of Dental Science and Research, 157/F Nilgunj Road, Panihati, Kolkata-700114, West Bengal, India
| | - Ranjan Rashmi Paul
- Department of Oral Medicine & Oral Radiology, Guru Nanak Institute of Dental Science and Research, 157/F Nilgunj Road, Panihati, Kolkata-700114, West Bengal, India
| | - Jyotirmoy Chatterjee
- School of Medical Science & Technology, Indian Institute of Technology Kharagpur, Kharagpur-721302, West Bengal, India
| | - Chirasree RoyChaudhuri
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering Science & Technology Shibpur, Howrah-711103, India
| | - Ananya Barui
- Centre for Healthcare Science & Technology, Indian Institute of Engineering Science and Technology Shibpur, Howrah-711103, India
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Roy R, Singh R, Chattopadhyay E, Ray A, Sarkar ND, Aich R, Paul RR, Pal M, Roy B. MicroRNA and target gene expression based clustering of oral cancer, precancer and normal tissues. Gene 2016; 593:58-63. [PMID: 27515006 DOI: 10.1016/j.gene.2016.08.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 08/02/2016] [Accepted: 08/05/2016] [Indexed: 12/26/2022]
Abstract
PURPOSE Development of oral cancer is usually preceded by precancerous lesion. Despite histopathological diagnosis, development of disease specific biomarkers continues to be a promising field of study. Expression of miRNAs and their target genes was studied in oral cancer and two types of precancer lesions to look for disease specific gene expression patterns. METHODS Expression of miR-26a, miR-29a, miR-34b and miR-423 and their 11 target genes were determined in 20 oral leukoplakia, 20 lichen planus and 20 cancer tissues with respect to 20 normal tissues using qPCR assay. Expression data were, then, used for cluster analysis of normal as well as disease tissues. RESULTS Expression of miR-26a and miR-29a was significantly down regulated in leukoplakia and cancer tissues but up regulated in lichen planus tissues. Expression of target genes such as, ADAMTS7, ATP1B1, COL4A2, CPEB3, CDK6, DNMT3a and PI3KR1 was significantly down regulated in at least two of three disease types with respect to normal tissues. Negative correlations between expression levels of miRNAs and their targets were observed in normal tissues but not in disease tissues implying altered miRNA-target interaction in disease state. Specific expression profile of miRNAs and target genes formed separate clusters of normal, lichen planus and cancer tissues. CONCLUSION Our results suggest that alterations in expression of selected miRNAs and target genes may play important roles in development of precancer to cancer. Expression profiles of miRNA and target genes may be useful to differentiate cancer and lichen planus from normal tissues, thereby bolstering their role in diagnostics.
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Affiliation(s)
- Roshni Roy
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Richa Singh
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Esita Chattopadhyay
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Anindita Ray
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Navonil De Sarkar
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India
| | - Ritesh Aich
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India; Department of Oral Pathology, Guru Nanak Institute of Dental Science & Research, 157/F Nilganj Road, Kolkata 700114, India
| | - Ranjan Rashmi Paul
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India; Department of Oral Pathology, Guru Nanak Institute of Dental Science & Research, 157/F Nilganj Road, Kolkata 700114, India
| | - Mousumi Pal
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India; Department of Oral Pathology, Guru Nanak Institute of Dental Science & Research, 157/F Nilganj Road, Kolkata 700114, India
| | - Bidyut Roy
- Human Genetics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India.
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Rajput M, Bhandaru N, Anura A, Pal M, Pal B, Paul RR, Chatterjee J, Mukherjee R. Differential Behavior of Normal and Fibrotic Fibroblasts under the Synergistic Influence of Micropillar Topography and the Rigidity of Honey/Silk-Fibroin Substrates. ACS Biomater Sci Eng 2016; 2:1528-1539. [PMID: 33440589 DOI: 10.1021/acsbiomaterials.6b00292] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Monika Rajput
- School
of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
| | - Nandini Bhandaru
- Instability & Soft Patterning Lab, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
| | - Anji Anura
- School
of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
| | - Mousumi Pal
- Department
of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Panihati, Kolkata, West Bengal -700114, India
| | - Barnali Pal
- B.
C Roy Technological Hospital, Indian Institute of Kharagpur, Kharagpur, West Bengal -721302, India
| | - Ranjan Rashmi Paul
- Department
of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Panihati, Kolkata, West Bengal -700114, India
| | - Jyotirmoy Chatterjee
- School
of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
| | - Rabibrata Mukherjee
- Instability & Soft Patterning Lab, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
- School of Nano Science & Nano Technology (SNST), Indian Institute of Technology Kharagpur, Kharagpur, West Bengal -721302, India
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Chattopadhyay E, De Sarkar N, Singh R, Ray A, Roy R, Paul RR, Pal M, Ghose S, Ghosh S, Kabiraj D, Banerjee R, Roy B. Genome-wide mitochondrial DNA sequence variations and lower expression of OXPHOS genes predict mitochondrial dysfunction in oral cancer tissue. Tumour Biol 2016; 37:11861-11871. [PMID: 27055661 DOI: 10.1007/s13277-016-5026-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 03/18/2016] [Indexed: 12/17/2022] Open
Abstract
Several studies reported that mtDNA mutations may play important roles in carcinogenesis although the mechanism is not clear yet. Most of the studies compared mtDNA sequences in a tumor with those in normal tissues from different individuals ignoring inter-individual variations. In this study, 271 SNPs, 7 novel SNPs (or SNVs), and 15 somatic mutations were detected in mtDNA of 8 oral cancer tissues with respect to reference (rCRS) and adjacent normal tissues, respectively, using Ion PGM next generation sequencing method. Most of the sequence variations (76 SNPs and 1 somatic) are present in D-loop region followed by CyB (36 SNPs), ATP6 (24 SNPs), ND5 (17 SNPs and 5 somatic), ND4 (18 coding and 2 somatic) and other non-coding and coding DNA sequences. A total of 53 and 8 non-synonymous SNPs and somatic mutations, respectively, were detected in tumor tissues and some of these variations may have deleterious effects on the protein function as predicted by bioinformatic analysis. Moreover, significantly low mtDNA contents and expression of several mitochondrial genes in tumor compared to adjacent normal tissues may have also affected mitochondrial functions. Taken together, this study suggests that mtDNA mutations as well as low expression of mtDNA coded genes may play important roles in tumor growth. Although the sample size is low, an important aspect of the study is the use of adjacent control tissues to find out somatic mutations and a change in the expression of mitochondrial genes, to rule out inter-individual and inter-tissue variations which are important issues in the study of mitochondrial genomics.
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Affiliation(s)
- Esita Chattopadhyay
- Human Genetics Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India
| | - Navonil De Sarkar
- Fred Hutchinson Cancer Research center, University of Washington, Seattle, WA, USA
| | - Richa Singh
- Human Genetics Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India
| | - Anindita Ray
- Human Genetics Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India
| | - Roshni Roy
- Human Genetics Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India
| | - Ranjan Rashmi Paul
- Department of Oral Pathology, Guru Nanak Institute of Dental Science & Research, 157/F Nilganj Road, Kolkata, 700114, India
| | - Mousumi Pal
- Department of Oral Pathology, Guru Nanak Institute of Dental Science & Research, 157/F Nilganj Road, Kolkata, 700114, India
| | - Sandip Ghose
- Department of Oral Pathology, Dr. R Ahmed Dental College and Hospital, 114- AJC Bose Road, Kolkata, 700014, India
| | - Subhrendu Ghosh
- Department of Bioinformatics, Maulana Abul Kalam Azad University of Technology, West Bengal (formerly known as WBUT), BF-142, Sector 1, Salt Lake City, Kolkata, 700064, India
| | - Debajyoti Kabiraj
- Department of Bioinformatics, Maulana Abul Kalam Azad University of Technology, West Bengal (formerly known as WBUT), BF-142, Sector 1, Salt Lake City, Kolkata, 700064, India
| | - Raja Banerjee
- Department of Bioinformatics, Maulana Abul Kalam Azad University of Technology, West Bengal (formerly known as WBUT), BF-142, Sector 1, Salt Lake City, Kolkata, 700064, India
- Department of Biotechnology, Maulana Abul Kalam Azad University of Technology West Bengal (formerly known as WBUT), BF-142, Sector 1, Salt Lake City, Kolkata, 700064, India
| | - Bidyut Roy
- Human Genetics Unit, Indian Statistical Institute, 203 B T Road, Kolkata, 700108, India.
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Banerjee S, Chatterjee S, Anura A, Chakrabarty J, Pal M, Ghosh B, Paul RR, Sheet D, Chatterjee J. Correction: Global spectral and local molecular connects for optical coherence tomography features to classify oral lesions towards unravelling quantitative imaging biomarkers. RSC Adv 2016. [DOI: 10.1039/c6ra90039a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘Global spectral and local molecular connects for optical coherence tomography features to classify oral lesions towards unravelling quantitative imaging biomarkers’ by Satarupa Banerjee et al., RSC Adv., 2016, 6, 7511–7520.
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Affiliation(s)
- Satarupa Banerjee
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
| | - Swarnadip Chatterjee
- Advanced Technology Development Centre
- Indian Institute of Technology
- Kharagpur
- India
| | - Anji Anura
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
| | | | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Science and Research
- Kolkata
- India
| | - Bhaskar Ghosh
- Department of ENT & Head Neck Surgery
- Medical College
- Kolkata
- India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Science and Research
- Kolkata
- India
| | - Debdoot Sheet
- Department of Electrical Engineering
- Indian Institute of Technology
- Kharagpur
- India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
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Banerjee S, Chatterjee S, Anura A, Chakrabarty J, Pal M, Ghosh B, Paul RR, Sheet D, Chatterjee J. Global spectral and local molecular connects for optical coherence tomography features to classify oral lesions towards unravelling quantitative imaging biomarkers. RSC Adv 2016. [DOI: 10.1039/c5ra24117k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The biopsy based diagnosis of oral precancers like leukoplakia (OLK) and submucous fibrosis (OSF) as well as squamous cell carcinoma (OSCC) suffers from observer specific variability.
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Affiliation(s)
- Satarupa Banerjee
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
| | - Swarnadip Chatterjee
- Advanced Technology Development Centre
- Indian Institute of Technology
- Kharagpur
- India
| | - Anji Anura
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
| | | | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Science and Research
- Kolkata
- India
| | - Bhaskar Ghosh
- Department of ENT & Head Neck Surgery
- Medical College
- Kolkata
- India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Science and Research
- Kolkata
- India
| | - Debdoot Sheet
- Department of Electrical Engineering
- Indian Institute of Technology
- Kharagpur
- India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology
- Indian Institute of Technology
- Kharagpur
- India
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Bag S, Dutta D, Chaudhary A, Chandra Sing B, Banerjee R, Pal M, Paul RR, Basak A, Das AK, Ray AK, Chatterjee J. NanoLC MALDI MS/MS based quantitative metabolomics reveals the alteration of membrane biogenesis in oral cancer. RSC Adv 2016. [DOI: 10.1039/c6ra07001a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present a label-free untargeted metabolomics approach using nanoLC-MALDI MS/MS interface for the separation, identification and quantification of the metabolites from cancer biopsies.
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Affiliation(s)
- Swarnendu Bag
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Debabrata Dutta
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Amrita Chaudhary
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Bidhan Chandra Sing
- Central Research Facility
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Rita Banerjee
- Department of Science and Technology
- New Delhi 110016
- India
| | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Sciences and Research
- Kolkata 700114
- India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology
- Guru Nanak Institute of Dental Sciences and Research
- Kolkata 700114
- India
| | - Amit Basak
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Amit Kumar Das
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Ajoy Kumar Ray
- Indian Institute of Engineering Science and Technology
- Howrah 711103
- India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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Banerjee S, Pal M, Chakrabarty J, Petibois C, Paul RR, Giri A, Chatterjee J. Fourier-transform-infrared-spectroscopy based spectral-biomarker selection towards optimum diagnostic differentiation of oral leukoplakia and cancer. Anal Bioanal Chem 2015; 407:7935-43. [PMID: 26342309 DOI: 10.1007/s00216-015-8960-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 07/24/2015] [Accepted: 08/04/2015] [Indexed: 01/24/2023]
Abstract
In search of specific label-free biomarkers for differentiation of two oral lesions, namely oral leukoplakia (OLK) and oral squamous-cell carcinoma (OSCC), Fourier-transform infrared (FTIR) spectroscopy was performed on paraffin-embedded tissue sections from 47 human subjects (eight normal (NOM), 16 OLK, and 23 OSCC). Difference between mean spectra (DBMS), Mann-Whitney's U test, and forward feature selection (FFS) techniques were used for optimising spectral-marker selection. Classification of diseases was performed with linear and quadratic support vector machine (SVM) at 10-fold cross-validation, using different combinations of spectral features. It was observed that six features obtained through FFS enabled differentiation of NOM and OSCC tissue (1782, 1713, 1665, 1545, 1409, and 1161 cm(-1)) and were most significant, able to classify OLK and OSCC with 81.3 % sensitivity, 95.7 % specificity, and 89.7 % overall accuracy. The 43 spectral markers extracted through Mann-Whitney's U Test were the least significant when quadratic SVM was used. Considering the high sensitivity and specificity of the FFS technique, extracting only six spectral biomarkers was thus most useful for diagnosis of OLK and OSCC, and to overcome inter and intra-observer variability experienced in diagnostic best-practice histopathological procedure. By considering the biochemical assignment of these six spectral signatures, this work also revealed altered glycogen and keratin content in histological sections which could able to discriminate OLK and OSCC. The method was validated through spectral selection by the DBMS technique. Thus this method has potential for diagnostic cost minimisation for oral lesions by label-free biomarker identification.
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Affiliation(s)
- Satarupa Banerjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, 721302, India.
| | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Science and Research, 157/F Nilganj Road, Panihati, Kolkata, 700 114, India
| | | | - Cyril Petibois
- University of Bordeaux - Inserm U1029 LAMC - Biophysics of Vascular Plasticity, 33608, Pessac, France
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Science and Research, 157/F Nilganj Road, Panihati, Kolkata, 700 114, India
| | - Amita Giri
- Department of Pathology, North Bengal Medical College and Hospital, Darjeeling, 734012, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, 721302, India
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Anura A, Conjeti S, Das RK, Pal M, Paul RR, Bag S, Ray AK, Chatterjee J. Computer-aided molecular pathology interpretation in exploring prospective markers for oral submucous fibrosis progression. Head Neck 2015; 38:653-69. [PMID: 25532458 DOI: 10.1002/hed.23962] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2014] [Indexed: 12/17/2022] Open
Affiliation(s)
- Anji Anura
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
| | - Sailesh Conjeti
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
- Chair for Computer Aided Medical Procedures and Augmented Reality, Fakulät für Informatik; Technische Universität München; Garching bei München Germany
| | - Raunak Kumar Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
- School of BioSciences and Technology & Centre for Biomaterials Science and Technology, Vellore Institute of Technology, VIT University; Vellore Tamil Nadu India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Science and Research; Panihati Kolkata West Bengal India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Science and Research; Panihati Kolkata West Bengal India
| | - Swarnendu Bag
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
| | - Ajoy Kumar Ray
- Electronics & Electrical Communication Engineering; Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur; Kharagpur West Bengal India
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Bag S, Pal M, Chaudhary A, Das RK, Paul RR, Sengupta S, Chatterjee J. Connecting cyto-nano-architectural attributes and epithelial molecular expression in oral submucous fibrosis progression to cancer. J Clin Pathol 2015; 68:605-13. [PMID: 26038241 DOI: 10.1136/jclinpath-2014-202791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 04/21/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Problems in pre-cancer diagnosis complicate cancer theragnosis as well as life expectancy. There is uncertainty regarding malignant transformation of oral submucous fibrosis (OSF), an oral pre-cancer with dysplastic (OSFWD) and non-dysplastic (OSFWT) subtypes. Understanding the structural, molecular and physical aspects of epithelial homeostasis may be useful. MATERIALS AND METHODS Histopathological grading of biopsy sections was performed using H&E staining. Alterations in epithelial surface architecture in different groups was evaluated using scanning electron microscopy (SEM). The expression of crucial epithelial genes (p63, CK-5/6, CK-10, E-cadherin and β-catenin) was studied by immunohistochemistry, Western blot and RT-PCR analysis. RESULTS SEM observations revealed that the surface epithelial ridge pattern became thick and dense, and pit pattern gradually decreased in OSFWD and oral squamous cell carcinoma (OSCC). p63, ΔNp63 and CK-5/6 were up-regulated in OSFWD and OSCC but down-regulated in OSFWT. CK-10 was down-regulated in OSFWD compared to OSFWT. Cytoplasmic expression of E-cadherin and β-catenin was elevated in dysplastic and cancerous conditions. Moreover, statistical correlation between SEM features (ridges and pits) and molecular attributes demonstrated a significant positive relationship between the ridge-to-pit ratio and p63 population density (r=0.85) and the ridge-to-pit ratio and CK-5/6 intensity (r=0.63). CONCLUSIONS Molecular changes related to epithelial progressive maturation and cellular proliferation are correlated with concomitant alteration of epithelial surface architecture which helps to predict the malignant potentiality of OSF.
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Affiliation(s)
- Swarnendu Bag
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Mousumi Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | - Amrita Chaudhary
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
| | - Raunak Kumar Das
- School of Bio Sciences and Technology & Centre for Biomaterials Science and Technology, Vellore Institute of Technology, VIT University, Vellore, Tamil Nadu, India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | | | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
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Anura A, Das RK, Pal M, Paul RR, Ray AK, Chatterjee J. Correlated analysis of semi-quantitative immunohistochemical features of E-cadherin, VEGF and CD105 in assessing malignant potentiality of oral submucous fibrosis. Pathol Res Pract 2014; 210:1054-63. [DOI: 10.1016/j.prp.2014.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/10/2014] [Accepted: 06/12/2014] [Indexed: 12/27/2022]
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Rajput M, Bhandaru N, Barui A, Chaudhary A, Paul RR, Mukherjee R, Chatterjee J. Nano-patterned honey incorporated silk fibroin membranes for improving cellular compatibility. RSC Adv 2014. [DOI: 10.1039/c4ra05799f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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De Sarkar N, Roy R, Mitra JK, Ghose S, Chakraborty A, Paul RR, Mukhopadhyay I, Roy B. A quest for miRNA bio-marker: a track back approach from gingivo buccal cancer to two different types of precancers. PLoS One 2014; 9:e104839. [PMID: 25126847 PMCID: PMC4134240 DOI: 10.1371/journal.pone.0104839] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 07/15/2014] [Indexed: 12/19/2022] Open
Abstract
Deregulation of miRNA expression may contribute to tumorigenesis and other patho-physiology associated with cancer. Using TLDA, expression of 762 miRNAs was checked in 18 pairs of gingivo buccal cancer-adjacent control tissues. Expression of significantly deregulated miRNAs was further validated in cancer and examined in two types of precancer (leukoplakia and lichen planus) tissues by primer-specific TaqMan assays. Biological implications of these miRNAs were assessed bioinformatically. Expression of hsa-miR-1293, hsa-miR-31, hsa-miR-31* and hsa-miR-7 were significantly up-regulated and those of hsa-miR-206, hsa-miR-204 and hsa-miR-133a were significantly down-regulated in all cancer samples. Expression of only hsa-miR-31 was significantly up-regulated in leukoplakia but none in lichen planus samples. Analysis of expression heterogeneity divided 18 cancer samples into clusters of 13 and 5 samples and revealed that expression of 30 miRNAs (including the above-mentioned 7 miRNAs), was significantly deregulated in the cluster of 13 samples. From database mining and pathway analysis it was observed that these miRNAs can significantly target many of the genes present in different cancer related pathways such as “proteoglycans in cancer”, PI3K-AKT etc. which play important roles in expression of different molecular features of cancer. Expression of hsa-miR-31 was significantly up-regulated in both cancer and leukoplakia tissues and, thus, may be one of the molecular markers of leukoplakia which may progress to gingivo-buccal cancer.
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Affiliation(s)
| | - Roshni Roy
- Human Genetics Unit, Indian Statistical Institute, Kolkata, India
| | - Jit Kumar Mitra
- Human Genetics Unit, Indian Statistical Institute, Kolkata, India
| | - Sandip Ghose
- Oral Pathology Department, Guru Nanak Institute of Dental Science & Research, Panihati, Kokata, India
| | | | - Ranjan Rashmi Paul
- Oral Pathology Department, Guru Nanak Institute of Dental Science & Research, Panihati, Kokata, India
| | | | - Bidyut Roy
- Human Genetics Unit, Indian Statistical Institute, Kolkata, India
- * E-mail:
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Bag S, Conjeti S, Das RK, Pal M, Anura A, Paul RR, Ray AK, Sengupta S, Chatterjee J. Computational analysis of p63(+) nuclei distribution pattern by graph theoretic approach in an oral pre-cancer (sub-mucous fibrosis). J Pathol Inform 2013; 4:35. [PMID: 24524001 PMCID: PMC3908487 DOI: 10.4103/2153-3539.124006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 11/04/2013] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Oral submucous fibrosis (OSF) is a pre-cancerous condition with features of chronic, inflammatory and progressive sub-epithelial fibrotic disorder of the buccal mucosa. In this study, malignant potentiality of OSF has been assessed by quantification of immunohistochemical expression of epithelial prime regulator-p63 molecule in correlation to its malignant (oral squamous cell carcinoma [OSCC] and normal counterpart [normal oral mucosa [NOM]). Attributes of spatial extent and distribution of p63(+) expression in the epithelium have been investigated. Further, a correlated assessment of histopathological attributes inferred from H&E staining and their mathematical counterparts (molecular pathology of p63) have been proposed. The suggested analytical framework envisaged standardization of the immunohistochemistry evaluation procedure for the molecular marker, using computer-aided image analysis, toward enhancing its prognostic value. SUBJECTS AND METHODS In histopathologically confirmed OSF, OSCC and NOM tissue sections, p63(+) nuclei were localized and segmented by identifying regional maxima in plateau-like intensity spatial profiles of nuclei. The clustered nuclei were localized and segmented by identifying concave points in the morphometry and by marker-controlled watersheds. Voronoi tessellations were constructed around nuclei centroids and mean values of spatial-relation metrics such as tessellation area, tessellation perimeter, roundness factor and disorder of the area were extracted. Morphology and extent of expression are characterized by area, diameter, perimeter, compactness, eccentricity and density, fraction of p63(+) expression and expression distance of p63(+) nuclei. RESULTS Correlative framework between histopathological features characterizing malignant potentiality and their quantitative p63 counterparts was developed. Statistical analyses of mathematical trends were evaluated between different biologically relevant combinations: (i) NOM to oral submucous fibrosis without dysplasia (OSFWT) (ii) NOM to oral submucous fibrosis with dysplasia (OSFWD) (iii) OSFWT-OSFWD (iv) OSFWD-OSCC. Significant histopathogical correlates and their corroborative mathematical features, inferred from p63 staining, were also investigated into. CONCLUSION Quantitative assessment and correlative analysis identified mathematical features related to hyperplasia, cellular stratification, differentiation and maturation, shape and size, nuclear crowding and nucleocytoplasmic ratio. It is envisaged that this approach for analyzing the p63 expression and its distribution pattern may help to establish it as a quantitative bio-marker to predict the malignant potentiality and progression. The proposed work would be a value addition to the gold standard by incorporating an observer-independent framework for the associated molecular pathology.
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Affiliation(s)
- Swarnendu Bag
- School of Medical Science and Technology, Kharagpur, India
| | | | - Raunak Kumar Das
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Mousami Pal
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | - Anji Anura
- School of Medical Science and Technology, Kharagpur, India
| | - Ranjan Rashmi Paul
- Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, Kolkata, West Bengal, India
| | - Ajoy Kumar Ray
- Department of Electrical and Electronics Communication Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India
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Das RK, Anura A, Pal M, Bag S, Majumdar S, Barui A, Chakraborty C, Ray AK, Sengupta S, Paul RR, Chatterjee J. Epithelio-mesenchymal transitional attributes in oral sub-mucous fibrosis. Exp Mol Pathol 2013; 95:259-69. [PMID: 23994666 DOI: 10.1016/j.yexmp.2013.08.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 08/08/2013] [Accepted: 08/14/2013] [Indexed: 12/17/2022]
Abstract
Evaluating molecular attributes in association with its epithelial and sub-epithelial changes of oral sub-mucous fibrosis is meaningful in exploring the plausibility of an epithelio-mesenchymal transition (EMT) and malignant potentiality of this pathosis. In this study histopathological and histochemical attributes for basement membrane and connective tissue in biopsies of oral sub-mucous fibrosis (n = 55) and normal oral mucosa (n = 16) were assessed and expressions of p63, E-cadherin, β-catenin, N-cadherin and TWIST were analyzed immunohistochemically. The p63 and its isoforms (TA and ∆N), PARD3, E-cadherin and β-catenin were also assessed transcriptomically by q-PCR and EMT players like TWIST1, ZEB1, MMP9 and micro-RNA 205 were searched in gene expression microarrays. Oral epithelium demonstrating impairment in progressive maturation in oral sub-mucous fibrosis concomitantly experienced an increase in basement membrane thickness and collagen deposition along with alteration in target molecular expressions. In comparison to non-dysplastic conditions dysplastic stages exhibited significant increase in p63 and p63∆N expressions whereas, E-cadherin and β-catenin exhibited loss from the membrane with concurrent increase in cytoplasm. Further the N-cadherin and TWIST were gained remarkably along with the appearance of nuclear accumulation features of β-catenin. The microarray search had noticed the up-regulation of TWIST1, ZEB1 and MMP9 along with down regulation of micro-RNA 205. The simultaneous increase in basement membrane thickness and sub-epithelial collagen deposition were the plausible indicators for increased matrix stiffness with expected impact on oral epithelial functional homoeostasis. This was corroborated with the increase in expressions of epithelial master regulator p63 and its oncogenic isoform (∆N) along with membranous loss of E-cadherin (EMT hallmark) and its associate β-catein and gain of mesenchymal markers like N-cadherin and TWIST. These also became indicative for the induction of epithelial to mesenchymal transitional mechanism in oral sub-mucous fibrosis when connoted here with the relevant modulation in expressions of EMT regulators.
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Affiliation(s)
- Raunak Kumar Das
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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Chaudhuri SR, Mukherjee S, Paul RR, Haldar A, Chaudhuri K. CYP1AI and CYP2E1 gene polymorphisms may increase susceptibility to Oral Submucous Fibrosis among betel quid chewers of Eastern India. Gene 2013; 513:268-71. [DOI: 10.1016/j.gene.2012.10.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 10/09/2012] [Accepted: 10/16/2012] [Indexed: 01/24/2023]
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Das RK, Pal M, Barui A, Paul RR, Chakraborty C, Ray AK, Chatterjee J. ApoTome to visualize E-cadherin and p63 expression in oral pre-cancer. Biotechnol J 2011; 7:602-7. [DOI: 10.1002/biot.201100013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 06/14/2011] [Accepted: 08/22/2011] [Indexed: 11/10/2022]
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Krishnan MMR, Venkatraghavan V, Acharya UR, Pal M, Paul RR, Min LC, Ray AK, Chatterjee J, Chakraborty C. Automated oral cancer identification using histopathological images: a hybrid feature extraction paradigm. Micron 2011; 43:352-64. [PMID: 22030300 DOI: 10.1016/j.micron.2011.09.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/28/2011] [Accepted: 09/29/2011] [Indexed: 10/17/2022]
Abstract
Oral cancer (OC) is the sixth most common cancer in the world. In India it is the most common malignant neoplasm. Histopathological images have widely been used in the differential diagnosis of normal, oral precancerous (oral sub-mucous fibrosis (OSF)) and cancer lesions. However, this technique is limited by subjective interpretations and less accurate diagnosis. The objective of this work is to improve the classification accuracy based on textural features in the development of a computer assisted screening of OSF. The approach introduced here is to grade the histopathological tissue sections into normal, OSF without Dysplasia (OSFWD) and OSF with Dysplasia (OSFD), which would help the oral onco-pathologists to screen the subjects rapidly. The biopsy sections are stained with H&E. The optical density of the pixels in the light microscopic images is recorded and represented as matrix quantized as integers from 0 to 255 for each fundamental color (Red, Green, Blue), resulting in a M×N×3 matrix of integers. Depending on either normal or OSF condition, the image has various granular structures which are self similar patterns at different scales termed "texture". We have extracted these textural changes using Higher Order Spectra (HOS), Local Binary Pattern (LBP), and Laws Texture Energy (LTE) from the histopathological images (normal, OSFWD and OSFD). These feature vectors were fed to five different classifiers: Decision Tree (DT), Sugeno Fuzzy, Gaussian Mixture Model (GMM), K-Nearest Neighbor (K-NN), Radial Basis Probabilistic Neural Network (RBPNN) to select the best classifier. Our results show that combination of texture and HOS features coupled with Fuzzy classifier resulted in 95.7% accuracy, sensitivity and specificity of 94.5% and 98.8% respectively. Finally, we have proposed a novel integrated index called Oral Malignancy Index (OMI) using the HOS, LBP, LTE features, to diagnose benign or malignant tissues using just one number. We hope that this OMI can help the clinicians in making a faster and more objective detection of benign/malignant oral lesions.
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Affiliation(s)
- M Muthu Rama Krishnan
- Department of Electronics and Computer Engineering, Ngee Ann Polytechnic, Singapore.
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Muthu Rama Krishnan M, Shah P, Choudhary A, Chakraborty C, Paul RR, Ray AK. Textural characterization of histopathological images for oral sub-mucous fibrosis detection. Tissue Cell 2011; 43:318-30. [DOI: 10.1016/j.tice.2011.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 06/22/2011] [Accepted: 06/27/2011] [Indexed: 10/17/2022]
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Muthu Rama Krishnan M, Chakraborty C, Paul RR, Ray AK. Quantitative Analysis of Sub-Epithelial Connective Tissue Cell Population of Oral Submucous Fibrosis Using Support Vector Machine. J Med Imaging Hlth Inform 2011. [DOI: 10.1166/jmihi.2011.1013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Muthu Rama Krishnan M, Shah P, Pal M, Chakraborty C, Paul RR, Chatterjee J, Ray AK. Structural markers for normal oral mucosa and oral sub-mucous fibrosis. Micron 2009; 41:312-20. [PMID: 20047834 DOI: 10.1016/j.micron.2009.12.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2009] [Accepted: 12/06/2009] [Indexed: 10/20/2022]
Abstract
This article presents a quantitative approach for the characterization of normal oral mucosa (NOM) in respect to thickness and textural properties of its entire epithelial layer. Histological images of oral mucosa depict that both thickness and tissue architecture at cellular and tissue level undergo change, as mucosa converts from normal to precancerous or cancerous state. In this study the thickness and fractal dimension of the mucosal epithelium of NOM and oral sub-mucous fibrosis (OSF) condition have been computed using 83 normal and 29 OSF images of oral mucosa. The result shows significant delineation between NOM and OSF in respect of both the epithelial thickness (in microm) and fractal dimensions. This quantitative characterization of oral epithelium will be of immense help for oral onco-pathologists and researchers to assess the biological nature of normal and diseased (OSF) mucosa with higher accuracy. Moreover, further differential applications may enable them to find out newer accurate quantitative diagnostic procedures to that of the usual histopathological gold standard for the assessment of malignant potentiality.
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Affiliation(s)
- M Muthu Rama Krishnan
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, West Bengal 721302, India
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Pal M, Chaudhuri SR, Jadav A, Banerjee S, Paul RR, Dutta PK, Ghosh B, Chatterjee J, Chaudhuri K. Quantitative dimensions of histopathological attributes and status of GSTM1–GSTT1 in oral submucous fibrosis. Tissue Cell 2008; 40:425-35. [DOI: 10.1016/j.tice.2008.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 04/04/2008] [Accepted: 04/23/2008] [Indexed: 10/21/2022]
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Roychoudhury P, Paul RR, Chowdhury R, Chaudhuri K. HnRNP E2 is downregulated in human oral cancer cells and the overexpression of hnRNP E2 induces apoptosis. Mol Carcinog 2007; 46:198-207. [PMID: 17219427 DOI: 10.1002/mc.20265] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Human hnRNP genes have been reported to be involved in human malignancies and several hnRNPs are promising biomarkers of lung, head and neck, colon, breast, and pancreatic cancers. The present study investigated the clinicopathologic and biological significance of hnRNP E2 gene expression in oral cancer. Human hnRNP E2 was significantly downregulated in oral cancer tissues compared to normal one (P<0.0001) as determined by quantitative real-time reverse transcription PCR. The expression of hnRNP E2 is correlated with histology, being lower in moderate and poorly differentiated squamous cell carcinoma (SCC) compared to well-differentiated SCC. Transient transfection of hnRNP E2 in cancerous cell lines resulted in reduced cell viability and increased apoptotic nuclei. Compared to control transfectants, cells with higher expression showed an increase in the number of apoptotic cells by annexin-PI staining and an increase in caspase activity. The present study thus implicates downregulation of hnRNP E2 as a novel mechanism to enhance the resistance of cancer cells to apoptosis.
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Affiliation(s)
- Paromita Roychoudhury
- Human Genetics & Genomics Group, Indian Institute of Chemical Biology, Jadavpur, Kolkata 700032, India
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Mukherjee A, Paul RR, Chaudhuri K, Chatterjee J, Pal M, Banerjee P, Mukherjee K, Banerjee S, Dutta PK. Performance analysis of different wavelet feature vectors in quantification of oral precancerous condition. Oral Oncol 2006; 42:914-28. [PMID: 16725369 DOI: 10.1016/j.oraloncology.2005.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2005] [Accepted: 12/07/2005] [Indexed: 10/24/2022]
Abstract
This paper presents an automatic method for classification of progressive stages of oral precancerous conditions like oral submucous fibrosis (OSF). The classifier used is a three-layered feed-forward neural network and the feature vector, is formed by calculating the wavelet coefficients. Four wavelet decomposition functions, namely GABOR, HAAR, DB2 and DB4 have been used to extract the feature vector set and their performance has been compared. The samples used are transmission electron microscopic (TEM) images of collagen fibers from oral subepithelial region of normal and OSF patients. The trained network could classify normal fibers from less advanced and advanced stages of OSF successfully.
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Affiliation(s)
- Anirban Mukherjee
- Department of Electrical Engineering, Indian Institute of Technology, Kharagpur, 721302 West Bengal, India
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Mitra S, Sikdar N, Misra C, Gupta S, Paul RR, Roy B, Panda CK, Roychoudhury S. Risk assessment of p53 genotypes and haplotypes in tobacco-associated leukoplakia and oral cancer patients from eastern Idia. Int J Cancer 2005; 117:786-93. [PMID: 15981211 DOI: 10.1002/ijc.21263] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The role of 3 p53 polymorphisms (16 bp duplication at intron 3, codon 72 Arg/Pro and intron 6 NciI RFLP at np 13494) as potential markers for indicating cancer risk remains inconclusive. In our case-control study consisting of 197 leukoplakia and 310 oral squamous cell carcinoma (SCC) patients and 348 controls, genotype frequencies at these 3 p53 loci were determined by PCR-RFLP method and analyzed by multiple logistic regression to determine the risks of the diseases. The 2/2 genotype at codon 72 of p53 was at risk for developing leukoplakia (OR = 1.6, 95% CI 1.1-2.3), whereas the combination of 1/2 and 2/2 genotypes at intron 3 and 1/1 and 1/2 genotypes at intron 6 conferred a protective effect against leukoplakia and oral SCC development, respectively (OR = 0.5, 95% CI 0.4-0.8 and OR = 0.6, 95% CI 0.5-0.9, respectively). When subjects were stratified according to specific tobacco habit, the risk/protection estimates improved significantly in some cases. Specifically, the exclusive smokers with p53 codon 72 2/2 genotype showed a higher risk of developing leukoplakia (OR = 2.7, 95% CI 1.2-6.3). Furthermore, a particular p53 haplotype 1-2-2 was at risk for both tobacco-associated leukoplakia and oral SCC (OR = 1.5, 95% CI 1.1-1.9 and OR = 1.3, 95% CI 1.1-1.7, respectively). Our results show that both specific p53 genotype and haplotype can indicate risk of tobacco-associated leukoplakia, but risk of development of tobacco-associated oral SCC can be predicted by specific p53 haplotype only.
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Affiliation(s)
- Sayan Mitra
- Indian Institute of Chemical Biology, Human Genetics and Genomics Division, Kolkata, India
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Paul RR, Mukherjee A, Dutta PK, Banerjee S, Pal M, Chatterjee J, Chaudhuri K, Mukkerjee K. A novel wavelet neural network based pathological stage detection technique for an oral precancerous condition. J Clin Pathol 2005; 58:932-8. [PMID: 16126873 PMCID: PMC1770817 DOI: 10.1136/jcp.2004.022095] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIM To describe a novel neural network based oral precancer (oral submucous fibrosis; OSF) stage detection method. METHOD The wavelet coefficients of transmission electron microscopy images of collagen fibres from normal oral submucosa and OSF tissues were used to choose the feature vector which, in turn, was used to train the artificial neural network. RESULTS The trained network was able to classify normal and oral precancer stages (less advanced and advanced) after obtaining the image as an input. CONCLUSIONS The results obtained from this proposed technique were promising and suggest that with further optimisation this method could be used to detect and stage OSF, and could be adapted for other conditions.
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Affiliation(s)
- R R Paul
- Department of Oral and Maxillofacial Pathology, R Ahmed Dental College and Hospital, Kolkata 700 014, India
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Majumder M, Sikdar N, Paul RR, Roy B. Increased Risk of Oral Leukoplakia and Cancer Among Mixed Tobacco Users Carrying XRCC1 Variant Haplotypes and Cancer Among Smokers Carrying Two Risk Genotypes: One on Each of Two Loci, GSTM3 and XRCC1 (Codon 280). Cancer Epidemiol Biomarkers Prev 2005; 14:2106-12. [PMID: 16172217 DOI: 10.1158/1055-9965.epi-05-0108] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An individual's susceptibility to oral precancer and cancer depends not only on tobacco exposure but also on the genotypes/haplotypes at susceptible loci. In this hospital-based case-control study, 310 cancer patients, 197 leukoplakia patients, and 348 controls were studied to determine risk of the disease due to polymorphisms at three sites on XRCC1 and one site on XRCC3. Independently, variant genotypes on these loci did not modulate risk of leukoplakia and cancer except for the XRCC1 (codon 280) risk genotype in exclusive smokeless tobacco users with leukoplakia [odds ratios (OR), 2.4; 95% confidence intervals (CI), 1.0-5.7]. But variant haplotypes, containing one variant allele, on XRCC1 increased the risk of leukoplakia (OR, 1.3; 95% CI, 1.0-1.7). Among stratified samples, mixed tobacco users, carrying variant haplotypes, also had increased risk of both leukoplakia (OR, 2.2; 95% CI, 1.3-3.9) and cancer (OR, 1.9; 95% CI, 1.2-3.1). In a previous study on this population, it was shown that the GSTM3 (A/A) genotype increased the risk of oral leukoplakia and cancer among smokers, which has also been substantiated in this study with expanded sample sizes. The simultaneous presence of two risk genotypes in smokers, one on each of two loci, GSTM3 and XRCC1 (codon 280), increased the risk of cancer (OR, 2.4; 95% CI, 1.0-5.8). Again, smokers carrying two risk genotypes, one on each of two loci, GSTM3 and XRCC1 (codon 399), were also overrepresented in both leukoplakia and cancer populations (P(trend) = 0.02 and 0.04, respectively) but enhancement of risks were not observed; probably due to small sample sizes. Therefore, the presence of variant haplotypes on XRCC1 and two risk genotypes, one on each of two loci, GSTM3 and XRCC1, could be useful to determine the leukoplakias that might progress to cancer in a group of patients.
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Sikdar N, Paul RR, Roy B. GlutathioneS-transferaseM3 (A/A) genotype as a risk factor for oral cancer and leukoplakia among Indian tobacco smokers. Int J Cancer 2004; 109:95-101. [PMID: 14735473 DOI: 10.1002/ijc.11610] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Polymorphism in glutathione S-transferase (GST) genes, causing variations in enzyme activities, may influence susceptibility to oral cancer and leukoplakia in smokers and/or smokeless tobacco users. In this case-control study consisting of 109 leukoplakia and 256 oral cancer patients and 259 controls, genotype frequencies at GSTM1, GSTT1, GSTM3 and GSTP1 loci were determined by polymerase chain reaction-restriction fragment length polymorphism methods and analyzed by multiple logistic regression to determine the risks of the diseases. There were no significant differences in the distributions of GSTM1, GSTM3 and GSTT1 genotypes in patients and controls when all individuals were compared. In contrast, frequencies of ile/ile genotype at codon 105 and variant val-ala haplotype of GSTP1 was significantly higher (OR = 1.5; 95% CI = 1.0-2.0) and lower (OR = 1.4; 95% CI = 1.0-1.9) in oral cancer patients compare to controls, respectively. The impacts of all genotypes on risks of oral cancer and leukoplakia were also analyzed in patients with different tobacco habits and doses. Increased risks of cancer and leukoplakia were observed in tobacco smokers with GSTM3 (A/A) genotype (OR = 2.0, 95% CI = 1.0-4.0; OR = 2.0, 95% CI = 1.0-4.4, respectively). So, GSTM3 (A/A) genotype could become one of the markers to know which of the leukoplakia would be transformed into cancer. Heavy tobacco chewing (> 124 chewing-year) increased the risk of cancer in individuals with GSTT1 homozygous null genotype (OR = 3.0; 95% CI = 1.0-9.8). Furthermore, increased lifetime exposure to tobacco smoking (> 11.5 pack-year) increased the risk of leukoplakia in individuals with GSTM1 homozygous null genotype (OR = 2.4; 95% CI = 1.0-5.7). It may be suggested that polymorphisms in GSTP1, GSTM1, GSTM3 and GSTT1 genes regulate risk of cancer and leukoplakia differentially among different tobacco habituals.
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Affiliation(s)
- Nilabja Sikdar
- Anthropology and Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, Kolkata, India
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Sikdar N, Paul RR, Panda CK, Banerjee SK, Roy B. Loss of heterozygosity at APC and MCC genes of oral cancer and leukoplakia tissues from Indian tobacco chewers. J Oral Pathol Med 2003; 32:450-4. [PMID: 12901725 DOI: 10.1034/j.1600-0714.2003.00132.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Loss of heterozygosity (LOH) at tumor suppressor genes, such as adenomatous polyposis coli (APC) and mutated in colon cancer (MCC) genes, is one of the early events in carcinogenesis of oral tissue in Caucasian and Chinese patients. We wanted to check whether it is also true in Indian oral pre-cancer and cancer patients. METHODS Loss of heterozygosity at APC and MCC genes was investigated in 57 and 40 unrelated primary oral leukoplakia (a pre-cancerous lesion) and squamous cell carcinomas (SCC), respectively, by polymerase chain reaction. RESULTS In these samples, most of the leukoplakia patients had tobacco smoking habit whereas majority of cancer patients had tobacco chewing habit. LOH at APC gene was observed in 4 of 16 (25%) and 1 of 29 (3%) informative tumor and leukoplakia DNAs from tobacco chewers, respectively. LOH at MCC gene was not detected either in tumor or in leukoplakia DNAs. CONCLUSION This infrequent LOH at APC gene of pre-cancer and cancer tissues suggests that it may not be an early event in oral carcinogenesis in these patients.
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Affiliation(s)
- Nilabja Sikdar
- Anthropology and Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, 203 B. T. Road, Kolkata 700 08, India
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Abstract
Inter-individual genetic differences may contribute to differences in susceptibility to human diseases triggered by environmental exposures. In this study, we investigated polymorphisms at two sites in the CYP1A1 and three sites in the CYP2E1 genes in 99 leukoplakia patients and 227 controls from one Indian population. The frequencies of genotypes at these polymorphic sites (MspI and Ileu/Val) in the CYP1A1 and (PstI, RsaI and DraI) in the CYP2E1 genes, were similar in patient and control groups. But the combined rare and heterozygous genotypes (CC+CD) at the DraI site in the CYP2E1 gene were over-represented among patients compared with controls (age-adjusted odds ratio (OR)=2.02, 95% confidence interval (CI)=1.21-3.35). Light tobacco smokers (i.e. <21 pack-year) and light tobacco chewers (i.e. <104 chewing-year) with a "rare" C allele at the DraI site had high risk of leukoplakia (OR=2.88, 95% CI=1.16-7.22; OR=2.94, 95% CI=1.15-7.65, respectively). The "mixed tobacco" users with "rare" C allele are more susceptible to the disease than "exclusive" tobacco smokers and chewers. The results indicate that the "rare" C allele at the DraI polymorphic site in CYP2E1 gene may enhance susceptibility to leukoplakia among tobacco users in this population. But the low sample size limited the power to precisely estimate the tobacco-genotype interactions.
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Affiliation(s)
- Nilabja Sikdar
- Anthropology and Human Genetics Unit, Biological Sciences Division, Indian Statistical Institute, 203 B.T. Road, Kolkata 700108, India
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Paul RR, Chatterjee J, Das AK, Cervera ML, de la Guardia M, Chaudhuri K. Altered elemental profile as indicator of homeostatic imbalance in pathogenesis of oral submucous fibrosis. Biol Trace Elem Res 2002; 87:45-56. [PMID: 12117232 DOI: 10.1385/bter:87:1-3:045] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Oral submucous fibrosis (OSF) is a potential precancerous condition of the oral cavity and oropharynx. The etiopathogenesis of this complex precancerous condition is still obscure. In addition to deleterious oral habits, malnutrition, and possible genetic predisposition, altered bioelemental status is also likely to play an important role in its pathogenesis. The present study analyzed 68 elements by inductively coupled plasma-mass spectroscopy in oral mucosa of normal and OSF individuals and some interesting alterations in elemental profile in the diseased tissue have been noted, indicating a homeostatic imbalance. These bioelemental alterations leading to homeostatic imbalance might be considered as an important biological event in the pathogenesis of OSF.
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Affiliation(s)
- Ranjan Rashmi Paul
- Department of Oral & Maxillofacial Pathology, R. Ahmed Dental College & Hospital, Kolkata, India
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Fort DJ, Rogers RL, Paul RR, Stover EL, Finch RA. Optimization of an exogenous metabolic activation system for FETAX. II. Preliminary evaluation. Drug Chem Toxicol 2001; 24:117-27. [PMID: 11360430 DOI: 10.1081/dct-100102605] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The developmental toxicities of five test compounds including carbon tetrachloride, urethane, phenacetin, parathion, and chloroform, were evaluated using Frog Embryo Teratogenesis Assay--Xenopus (FETAX), with minor modification. Post-isolation mixtures of differently-induced rat liver microsomes (phenobarbital- (PB), beta-naphthoflavone- (beta-NF), and isoniazid- (INH)-induced preparations) were co-cultured directly with X. laevis embryos. Results from these studies suggest that the Aroclor 1254-induced MAS could effectively be replaced by a mixed lot of PB-, beta-NF-, and INH-induced rat liver microsomes. Each of the test materials were found to be developmentally toxic when bioactivated by the mixed MAS.
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Affiliation(s)
- D J Fort
- Fort Environmental Laboratories, Inc., Stillwater, OK, USA.
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