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Singh A, Astekar MS, Sapra G, Agarwal A, Murari A. Immunohistochemical expression of paxillin in ameloblastoma and odontogenic keratocyst: An observational study. J Oral Maxillofac Pathol 2023; 27:727-734. [PMID: 38304525 PMCID: PMC10829436 DOI: 10.4103/jomfp.jomfp_312_23] [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: 07/12/2023] [Revised: 09/08/2023] [Accepted: 10/09/2023] [Indexed: 02/03/2024] Open
Abstract
Background Cell adhesion molecules (CAMs) are found on the surface of all cells, where they allow dynamic processes to take place. These include cadherins, integrins, selectins and Immunoglobulin superfamily. Directly associated with β-integrin tails is a multidomain protein known as paxillin. However, CAMs participate in cell-cell and extracellular matrix-cell interactions during histomorphogenesis in the various phases of odontogenesis. Some tumours or cysts like ameloblastoma (AB) or odontogenic keratocyst (OKC) having odontogenic origin show disturbance in the interaction of these CAMs. Hence, the assessment of paxillin expression in AB and OKC was carried out. Materials and Methods The present observational study comprised 30 clinically and histologically confirmed cases of AB and OKC. All the slides were stained immunohistochemically using a paxillin antibody. Results Upon comparison of staining intensity of paxillin among AB and OKC showed statistically significant result, whereas quantitative staining and final summation showed non-significant result. Gender-wise comparison of paxillin staining intensity, quantitative staining and final summation among OKC showed significant result; however, in AB, staining intensity showed non-significant result, whereas quantitative staining and final summation showed significant result. Conclusion Paxillin has the greatest influence on tissue morphogenesis and development. The regulation of cell mobility is aided by the multiple roles that paxillin plays in a range of cells and tissues. However, further studies using a large sample size, along with other molecular analytical methods, may be essential to draw a definite conclusion about the association of paxillin and its exact function in OKC and AB.
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Affiliation(s)
- Arunima Singh
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Madhusudan S. Astekar
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Gaurav Sapra
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Ashutosh Agarwal
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Aditi Murari
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
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Alam S, Astekar MS, Sapra G, Agarwal A, Agarwal AM, Vishnu Rao SG. Immunohistochemical expression of paxillin in potentially malignant disorders and squamous cell carcinoma patients. J Oral Maxillofac Pathol 2022; 26:322-329. [PMID: 36588853 PMCID: PMC9802509 DOI: 10.4103/jomfp.jomfp_187_21] [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: 06/12/2021] [Revised: 11/16/2021] [Accepted: 01/21/2022] [Indexed: 01/03/2023] Open
Abstract
Background Cell adhesion molecules are essential to maintain the integrity of stratified squamous epithelium but their expression has to be dynamic to aid the mobility and turnover of cells. Paxillin is one such multi-domain protein which integrates numerous signals from cell surface receptors, integrins and growth factors. It thus functions as a regulator of various physiological and pathological processes including tissue remodeling, cell motility, gene expression, matrix organization, cell proliferation, metastasis and survival. Hence, the assessment of paxillin expression in normal control, potentially malignant disorders and oral squamous cell carcinoma patients was carried out. Material and Methods The present retrospective study comprised of 20 each clinically and histologically confirmed case of normal control, potentially malignant disorders, and oral squamous cell carcinomas. All the slides were stained immunohistochemically using Paxillin antibody. Results The localization, staining intensity and percentage of positivity for paxillin expression was statistically significant among normal control and potentially malignant disorders, whereas oral squamous cell carcinoma showed a non-significant difference. Upon comparison of histopathological grading of potentially malignant disorders, mild versus severe and moderate versus severe epithelial dysplasia showed a statistical significant difference among all the parameters of paxillin expression. However, WDSCC & MDSCC a statistically significant difference among localization and staining intensity of paxillin. Conclusion Paxillin may play an important role in pathogenesis of oral squamous cell carcinoma by altering the adhesive properties of the tumor cells interacting with the extracellular matrix which in turn affects their invasive behavior and histologic differentiation.
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Affiliation(s)
- Shakir Alam
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Madhusudan S Astekar
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Gaurav Sapra
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Ashutosh Agarwal
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Aditi Murari Agarwal
- Department of Oral Pathology and Microbiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Sowmya Gujjar Vishnu Rao
- Department of Oral Medicine and Radiology, Bareilly International University, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
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Bhattacharya HS, Srivastava R, Gummaluri SS, Agarwal MC, Bhattacharya P, Astekar MS. Comparison of blood parameters between periodontitis patients and healthy participants: A cross-sectional hematological study. J Oral Maxillofac Pathol 2022; 26:77-81. [PMID: 35571313 PMCID: PMC9106243 DOI: 10.4103/jomfp.jomfp_349_21] [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: 09/24/2021] [Revised: 01/06/2022] [Accepted: 01/21/2022] [Indexed: 11/04/2022] Open
Abstract
Background Bacteria and their products involved in periodontitis evoke an immunoinflammatory response in the host tissue. Inflammatory diseases, such as periodontitis, are often not just a local event, but may have systemic ramifications, including elevations in the numbers of circulating leukocytes, acute-phase proteins and oxidative stress markers. It is now emerging that also erythrocytes are affected by chronic inflammatory diseases. This phenomenon, named "anemia of inflammation," is not caused by marrow deficiencies or other diseases. The present study aimed to assess whether there was any relation between chronic periodontitis and hematological parameters. Materials and Methods A total of 80 patients were included in the study and were divided into the healthy and periodontitis groups. Blood sample was obtained from each participant for hematological analysis of leukocytes, erythrocytes, platelets, red blood cell (RBC) distribution width (RDW), mean corpuscular volume (MCV), platelet count and neutrophil-leukocyte ratio (NLR). Further, the values were gathered and subjected to statistical analysis. Unpaired t-test was performed to assess the statistical significance between the groups and P < 0.05 and < 0.001 were considered to be statistically significant. Results Results show statistically significant difference seen in leukocytes, lymphocytes, RDW, MCV, platelet count and NLR which was higher in patients with periodontitis, all other parameters are nonsignificant. Conclusion Thus, within limitations, it can be concluded that increased levels of leukocytes, lymphocytes, RDW, MCV, platelet count and NLR depict the inflammatory state and destructive nature of periodontitis.
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Affiliation(s)
- Hirak S Bhattacharya
- Department of Periodontology and Implantology, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Rishabh Srivastava
- Department of Periodontology and Implantology, Kothiwal Dental College and Research Centre, Moradabad, Uttar Pradesh, India
| | - Shiva Shankar Gummaluri
- Department of Periodontology and Implantology, Sree Sai Dental College and Research Institute, Srikakulam, Andhra Pradesh, India
| | - Manvi Chandra Agarwal
- Department of Periodontology and Implantology, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Preeti Bhattacharya
- Department of Orthodontics and Dentofacial Orthopaedics, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
| | - Madhusudan S Astekar
- Department of Oral and Maxillofacial Pathology and Microbiology, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India
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Rai B, Astekar MS, Manjunatha BS, Sapra G. Diffuse large B cell lymphoma of hard palate: a case report with literature review. J Exp Ther Oncol 2017; 11:101-105. [PMID: 28976132] [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] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/05/2015] [Indexed: 09/28/2022]
Abstract
OBJECTIVE Lymphomas are diverse group of neoplasm affecting the lymphoreticular system. Diffuse large B cell lymphoma is the most frequently diagnosed type of non-Hodgkin lymphoma and is the fifth most frequent malignancy, accounting for about 40% of cases reported. In the present case report a 40 year old female patient complains of swelling on right side of face since 45 days and gradually increased to present size. Intra-orally an ulcero-proliferative growth was present on the right side of hard palate. Incisional biopsy was suggestive of Lymphoproliferative disorder. Panel of immunohistochemical antibodies were used; which showed positivity for CD45, PAX5, Bcl2, Ki67, CD138 and negativity for CD3, CD10, CD20 and CD30. Therefore through routine standard hematoxylin and eosin staining a clear cut diagnosis of specific lymphoma was difficult to obtain and thus immunohistochemistry plays an important role in confirming the pinpoint diagnosis.
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Affiliation(s)
- Bhavana Rai
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Bareilly-243006, Uttar Pradesh State, India
| | - Madhusudan S Astekar
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Bareilly-243006, Uttar Pradesh State, India
| | | | - Gaurav Sapra
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Bareilly-243006, Uttar Pradesh State, India
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Abstract
Collagenase-3 (matrix metalloproteinase-13) is a metalloproteinase (MMP) that is associated with bone lesions and exhibits variable expression patterns in odontogenic cysts; it may play a role in regulating focal proliferation and maturation of jaw cyst epithelium. We studied the localization, staining intensity and distribution of collagenase-3 in 13 periapical granulomas with epithelium, 16 periapical granulomas without epithelium and 10 radicular cysts using archived formalin fixed, paraffin embedded tissues. A monoclonal antibody against human collagenase-3 was used to evaluate its expression. Immunohistochemical staining intensities of collagenase-3 in all periapical lesions were (-), 4 (10%); (+), 1 (3%); (++), 22 (56%) and (+++), 12 (31%); differences were not statistically significant. Immunohistochemical distribution of collagenase-3 in epithelial cells was (-), 17 (44%); (+), 17 (44%); (++), 5 (13%); in fibroblasts it was (-), 8 (20%); (+), 23 (59%); (++), 8 (21%); in plasma cells it was (-), 7 (18%); (+), 22 (56%); (++), 10 (26%); in macrophages it was (-), 7 (18%); (+), and 15 (38%); and (++), 17 (44%). Statistically significant differences were found in epithelial cells (p = 0.00) and fibroblasts (p = 0.02), whereas differences were not statistically significant for plasma cells and macrophages. Collagenase-3 may play a role in the conversion of a periapical granuloma with epithelium to radicular cyst. MMP's influence not only epithelial rest cell migration, but also invasion of various stromal cells into granulomatous tissue.
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Affiliation(s)
- G Bhalla
- Himachal Institute of Dental Sciences , Paontasahib, HP , India
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Gupta N, Hungund S, Astekar MS, Dodani K. Evaluation of palatal mucosal thickness and its association with age and gender. Biotech Histochem 2014; 89:481-7. [DOI: 10.3109/10520295.2014.893586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Metgud R, Astekar MS, Soni A, Naik S, Vanishree M. Conventional xylene and xylene-free methods for routine histopathological preparation of tissue sections. Biotech Histochem 2013; 88:235-41. [PMID: 23373510 DOI: 10.3109/10520295.2013.764015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Xylene customarily has been used as a clearing agent for routine tissue processing. Because xylene is a relatively hazardous solvent, laboratories are under pressure to seek less toxic alternatives for routine use. We prepared 30 paired soft tissue specimens for routine histopathological evaluation using conventional xylene and xylene-free methods to evaluate and compare their efficacy for fixation, processing, embedding, staining and turnaround time. All specimens were measured before and after processing. Three pathologists evaluated and scored the histological sections. Tissue shrinkage was greater when using the xylene method compared to the xylene-free method. The quality of tissue sections including tissue architecture; quality of staining; preservation of epithelial, fibrous, glandular, muscle and adipose tissue; inflammatory cells; and vascular tissue was better after using the xylene method, but differences were not statistically significant. Xylene-free method produced adequate results that nearly equaled the xylene method. Added advantages included cost effectiveness, better working atmosphere and decreased toxicity.
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Affiliation(s)
- R Metgud
- Paher University, Department of Oral and Maxillofacial Pathology, Pacific Dental College and Hospital, Debari, Udaipur, Rajasthan, 313024
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Hs CB, Rai BD, Nair MA, Astekar MS. Simple bone cyst of mandible mimicking periapical cyst. Clin Pract 2012; 2:e59. [PMID: 24765458 PMCID: PMC3981309 DOI: 10.4081/cp.2012.e59] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 04/13/2012] [Accepted: 04/16/2012] [Indexed: 11/22/2022] Open
Abstract
Simple bone cysts (SBC) are pseudocysts occurring less commonly in the maxillofacial region. The uncertain and unclear etiopathogenesis led to numerous synonyms to refer this particular cyst. These cysts are devoid of an epithelial lining and are usually empty or contain blood or straw-colored fluid. In jaws initially it mimics a periapical cyst and later can lead to cortical bone expansion warranting for radical approach, which is seldom required. SBC is predominantly diagnosed in first two decades of life. Here we report a case of solitary bone cyst mimicking a periapical cyst of a mandibular molar in a 37-year-old patient.
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Affiliation(s)
| | | | | | - Madhusudan S Astekar
- Department of Oral and Maxillofacial Pathology, Pacific Dental College and Hospital Debari, Udaipur (Rajasthan), India
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Shetty PP, Astekar MS, Jain A, Pandya M. Maxillary first molar with two palatal roots located under dental operating microscope. Clin Pract 2012; 2:e26. [PMID: 24765425 PMCID: PMC3981339 DOI: 10.4081/cp.2012.e26] [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: 11/16/2011] [Revised: 12/13/2011] [Accepted: 12/17/2011] [Indexed: 11/22/2022] Open
Abstract
An awareness and understanding of the presence of an additional root and unusual root canal morphology is essential as it determines the successful outcome of endodontic treatment. A thorough knowledge of basic root canal anatomy and its variation is necessary for successful completion of endodontic treatment. This report points to the importance of looking for additional roots and canals with the help of operating microscope. Finding additional roots and canals would enable clinician to successfully treat a case that would otherwise not be successful.
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Affiliation(s)
| | - Madhusudan S Astekar
- Department of Oral Pathology, Paher University, Pacific Dental College and Hospital, Udaipur, India
| | - Ankit Jain
- Department of Conservative and Endodontics
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