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Haron N, Rajendran S, Kallarakkal TG, Zain RB, Ramanathan A, Abraham MT, Lau SH, Cheng LC, Chong SMY, Mohamed Azahar FA, Mohamad Zaini Z, Chan SW, Goh YC, Lim D, Khairi J, Abidin MZ, Abdul Rahman ZA, Liew CS, Fong SC, Yang YH, Ismail SM, Cheong SC. High referral accuracy for oral cancers and oral potentially malignant disorders using telemedicine. Oral Dis 2023; 29:380-389. [PMID: 33914993 DOI: 10.1111/odi.13892] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [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: 10/26/2020] [Revised: 02/02/2021] [Accepted: 04/19/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To evaluate the accuracy of MeMoSA®, a mobile phone application to review images of oral lesions in identifying oral cancers and oral potentially malignant disorders requiring referral. SUBJECTS AND METHODS A prospective study of 355 participants, including 280 with oral lesions/variants was conducted. Adults aged ≥18 treated at tertiary referral centres were included. Images of the oral cavity were taken using MeMoSA®. The identification of the presence of lesion/variant and referral decision made using MeMoSA® were compared to clinical oral examination, using kappa statistics for intra-rater agreement. Sensitivity, specificity, concordance and F1 score were computed. Images were reviewed by an off-site specialist and inter-rater agreement was evaluated. Images from sequential clinical visits were compared to evaluate observable changes in the lesions. RESULTS Kappa values comparing MeMoSA® with clinical oral examination in detecting a lesion and referral decision was 0.604 and 0.892, respectively. Sensitivity and specificity for referral decision were 94.0% and 95.5%. Concordance and F1 score were 94.9% and 93.3%, respectively. Inter-rater agreement for a referral decision was 0.825. Progression or regression of lesions were systematically documented using MeMoSA®. CONCLUSION Referral decisions made through MeMoSA® is highly comparable to clinical examination demonstrating it is a reliable telemedicine tool to facilitate the identification of high-risk lesions for early management.
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Affiliation(s)
| | | | - Thomas George Kallarakkal
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Rosnah Binti Zain
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Faculty of Dentistry, Saujana Putra Campus, MAHSA University, Selangor, Malaysia
| | - Anand Ramanathan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Selangor, Malaysia.,Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia
| | - Shin Hin Lau
- Institute for Medical Research, Kuala Lumpur, Malaysia
| | - Lai Choo Cheng
- Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia
| | - Sherrie Mei Yee Chong
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Selangor, Malaysia.,Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia
| | - Farah Aliya Mohamed Azahar
- Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia.,Oral Surgery Clinic, Hospital Serdang, Ministry of Health, Serdang, Malaysia
| | - Zuraiza Mohamad Zaini
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siew Wui Chan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Yet Ching Goh
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Daniel Lim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Juliana Khairi
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Selangor, Malaysia.,Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia
| | - Marzuki Zainal Abidin
- Oral Health Program, Ministry of Health Malaysia, Putrajaya, Malaysia.,Oral Surgery Clinic, Hospital Serdang, Ministry of Health, Serdang, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Chee Sun Liew
- Department of Computer System & Technology, Faculty of Computer Science & Information Technology, University of Malaya, Kuala Lumpur, Malaysia.,Data Intensive Computing Centre, Research Management & Innovation Complex, University of Malaya, Kuala Lumpur, Malaysia.,Centre for Data Science, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Yi-Hsin Yang
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Sok Ching Cheong
- Cancer Research Malaysia, Selangor, Malaysia.,Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Ahmad AS, Doss JG, Ismail SM, Chen Kiong S, Jelon MA, Thangavalu L, Lay Ling C. Quality of Life vs. Supportive Care Needs for Oral Cancer Caregivers: Are They Related? Curr Oncol 2023; 30:1733-1744. [PMID: 36826095 PMCID: PMC9954937 DOI: 10.3390/curroncol30020134] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023] Open
Abstract
Caregivers providing care for their family members with oral cancer usually endure the caregiving burden in silence, which affects their quality of life and necessitates the need for supportive care. The aim of this study is to determine the relationship between the quality of life (QOL) of oral cancer caregivers and their supportive care needs (SCN) in Malaysia. The Malaysian versions of the Caregiver Oncology Quality of Life Questionnaire (M-CarGOQoL) and the Comprehensive Needs Assessment Tool for Cancer Caregivers (M-CNAT-C) were self-administered by 56 family caregivers of oral cancer patients from five tertiary hospitals throughout Peninsular Malaysia and Sarawak between October and December 2021. Correlation and multiple regression analyses were employed, and the significance level was set at p < 0.05. The mean score for the QOL of caregivers was 76.16 ± 16.01, with the lowest scores in the psychological well-being (64.87 ± 30.12) and self-esteem (68.64 ± 28.29) domains. The mean score for SCN of caregivers was 36.42 ± 24.16, with the highest scores in the healthcare staff (58.44 ± 33.80) and information (55.35 ± 29.98) domains. The correlation between QOL and SCN was moderately inversed, (r(54) = 0.58, p < 0.01). There was a significant effect of caregiving duration (<3 h/day versus >3 h/day) on the combined dependent variables (QOL and SCN), F(2, 53) = 5.006, p < 0.01, partial η2 = 0.16. QOL and caregiving duration accounted for a significant 43% of SCN, R2 = 0.43, adjusted R2 = 0.41, F(2, 53) = 20.32, p < 0.01. In conclusion, oral cancer caregivers with poorer QOL have higher SCN. It is recommended that oral cancer caregivers be recognized by healthcare providers in order to deliver holistic patient care.
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Affiliation(s)
- Aira Syazleen Ahmad
- Oral Health Program, Ministry of Health, Federal Government Administrative Centre, Putrajaya 62590, Malaysia
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Jennifer Geraldine Doss
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
- Oral Cancer Research & Coordinating Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
- Correspondence: ; Tel.: +603-7967-4805
| | - Siti Mazlipah Ismail
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Shim Chen Kiong
- Department of Oral and Maxillofacial Surgery, Sarawak General Hospital, Kuching 93586, Malaysia
| | - Md Arad Jelon
- Department of Oral and Maxillofacial Surgery, Kuala Lumpur Hospital, Kuala Lumpur 50586, Malaysia
| | - Logesvari Thangavalu
- Department of Oral and Maxillofacial Surgery, National Cancer Institute, Putrajaya 62250, Malaysia
| | - Ch’ng Lay Ling
- Department of Oral and Maxillofacial Surgery, Seberang Jaya Hospital, Perai 13700, Malaysia
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Apipi M, Yap AU, Ismail SM, Mohd Tahir MKA, Kadir K, Mohd Yusof ZY. Translation and Validation of the Malay Version of Oral Health Impact Profile for Temporomandibular Disorders. AOS 2022. [DOI: 10.21315/aos2022.1702.oa02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Most prior oral health-related quality of life (OHRQoL) research concerning temporomandibular disorders (TMDs) had utilised generic OHRQoL measures. This study aimed to translate and validate the Malay version of Oral Health Impact Profile for TMDs (OHIP-TMDs), a TMDs-specific OHRQoL tool, for use in Malay literate populations. The translation and cross-cultural adaptation of the OHIP-TMDs into the Malay language were implemented according to the international guidelines. A convenience sample of 243 subjects completed the Malay OHIP-TMDs (OHIP-TMDs-M) as well as the Malay Short Oral Health Impact Profile (S-OHIP-M), Global Oral Health ratings (GOH-M) and Fonseca Anamnestic Index (FAI-M). The OHIP-TMDs-M was re-administered to a subset of 40 subjects after two weeks for test-retest reliability. Concurrent, convergent and discriminative validity were assessed using Spearman’s rank correlation, Kruskal Wallis and Mann-Whitney U tests with significance level set at p < 0.05. The OHIP-TMDs-M was found to have excellent internal consistency (Cronbach’s alpha = 0.98) and test-retest reliability (intraclass correlation coefficient = 0.99, p < 0.001). A strong and positive correlation with S-OHIP-M (rs = 0.74) was observed, and OHIP-TMDs-M scores differed significantly between subjects with disparate GOH-M ratings (p < 0.001). Furthermore, the OHIPTMDs-M was able to discriminate between subjects with and without TMDs. The OHIP-TMDs-M was found to have excellent reliability and good validity. It is a promising tool for assessing TMDs-specific OHRQoL in Malay literate populations.
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Burhanudin NA, Zaini ZM, Rahman ZAA, Ismail SM, Gopinath D, Abraham MT, Kallarakkal TG. Overexpression of gamma glutamyl hydrolase predicts extranodal extension in squamous cell carcinoma of the oral cavity. Oral Surg Oral Med Oral Pathol Oral Radiol 2022; 134:725-732. [PMID: 36229363 DOI: 10.1016/j.oooo.2022.07.014] [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] [Received: 12/05/2021] [Revised: 06/21/2022] [Accepted: 07/23/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Extranodal extension (ENE) is an important prognostic factor in oral squamous cell carcinoma (OSCC). However, ENE is only confirmed postoperatively by histologic assessment of the lymph nodes after neck dissection. Accurate identification of ENE preoperatively would help in management of OSCC. STUDY DESIGN We determined the expression of molecular markers gamma glutamyl hydrolase (GGH), cyclin-dependent kinase inhibitor-3 (CDKN3), and chromobox homolog-7 (CBX7) using immunohistochemistry in OSCC clinical samples (n = 35). The intensity of staining was scored using a semiquantitative index (HSCORE). The association between clinicopathologic parameters and expression of molecular markers with ENE status was analyzed using chi-square test. RESULTS The number of positive nodes and the highest anatomic level of nodal involvement significantly correlated with ENE (P < .05). High GGH expression was significantly associated with ENE (P < .05), with an increased risk for ENE (odds ratio [OR] 9.9, 95% CI 1.08-91.47, P = .04), whereas no significant association was seen for CDKN3 and CBX7 expression with ENE. However, a trend toward significance was observed with a high level of CDKN3 and a low level of CBX7 expression with ENE. CONCLUSIONS Gamma glutamyl hydrolase offers potential as a predictor for ENE in OSCC, whereas the role of CDKN3 and CBX7 need to be validated in a larger sample.
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Affiliation(s)
- Nor Aszlitah Burhanudin
- Department of Oral Maxillofacial Surgery & Oral Diagnosis, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Malaysia
| | - Zuraiza Mohd Zaini
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Divya Gopinath
- Department of Clinical and Oral Health Sciences, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | | | - Thomas George Kallarakkal
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia.
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Ankathil R, Zakaria WNA, Rostenberghe HV, Ibrahim NR, Ramli N, Ismail SM, Mohd Nawi NA, Mat Zin NMZ, Ramli N, Abu Bakar Z, Rasudin NFS, Chia BH, Mohd Adam NA, Mohd Yunus N, Annuar AA, Sulong S, Alwi Z. Karyotype patterns, clinical features, and parental ages of three predominant live born autosomal trisomies of Northeast Malaysia. Malays J Pathol 2022; 44:235-244. [PMID: 36043586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chromosomal abnormality is one of the causes of congenital disorders among newborns. Despite aneuploidy being the major cause of first trimester miscarriages, very few aneuploidies such as trisomies of chromosomes 13, 18 and 21 survive to birth. The results of 4,064 patients referred for cytogenetic analysis at Human Genome Centre, Universiti Sains Malaysia, Kelantan, Malaysia between 2008 and 2019 were reviewed. We retrospectively investigated the karyotype patterns, clinical features and parental ages of the three common live-born autosomal trisomies such as trisomy 13, trisomy 18 and trisomy 21. The relative frequency of cases with the total sample received and cultured was calculated in each group and compared with those reported elsewhere. Between 2008 and 2019, a total of 1034 live-born trisomic cases which accounted for 25.4% of the 4064 total referred cases and 73.7% of 1403 suspected trisomy cases, were identified, with age ranging from newborns to 57 years. Down syndrome was the commonest aneuploidy (857 cases; 21.1%) followed by Edwards syndrome (133 cases; 3.3%) and Patau syndrome (44 cases; 1.1%). The number of diagnosed cases for each of the trisomies was fairly stable from year to year. About two-thirds of both maternal and paternal ages were ≥ 35 years. This is the first cytogenetic report on the common live-born autosomal trisomies in the North-Eastern region of Malaysia. The prevalence of trisomies 21 was found to be higher compared to an earlier study in the North-Western region of Malaysia, wherein also, advanced maternal age was a significant risk factor.
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Affiliation(s)
- R Ankathil
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - W N A Zakaria
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia.
| | - H V Rostenberghe
- Universiti Sains Malaysia, School of Medical Sciences, Department of Pediatrics, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N R Ibrahim
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N Ramli
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - S M Ismail
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N A Mohd Nawi
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N M Z Mat Zin
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N Ramli
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - Z Abu Bakar
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N F S Rasudin
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - B H Chia
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N A Mohd Adam
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - N Mohd Yunus
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - A A Annuar
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - S Sulong
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
| | - Z Alwi
- Universiti Sains Malaysia, School of Medical Sciences, Human Genome Centre, Health Campus, Kota Bharu, Kelantan, Malaysia
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Mahamad Apandi NI, Ramanathan A, Ismail SM, Ranganathan K. Do Clear Cell Changes in Oral Squamous Cell Carcinoma Warrant It Being Recognised as a Variant? Cureus 2022; 14:e25057. [PMID: 35719807 PMCID: PMC9200516 DOI: 10.7759/cureus.25057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2022] [Indexed: 11/06/2022] Open
Abstract
Histological variants of oral squamous cell carcinoma (OSCC) include verrucous, basaloid, spindle cell, adenosquamous, papillary, and acantholytic types. Clear-cell changes in OSCC are rare. We report a case of a 65-year-old male Chinese patient who presented with a swelling in the lower-left mandible for three weeks, causing ill-fitting of his lower denture and an ulcer on the floor of the mouth. Histologically, the lesion showed a dense proliferation of malignant tumor cells arranged in islands and sheets consisting of squamoid cells intermixed with signet ring-shaped clear cells. The clear cells were negative for mucicarmine, periodic acid Schiff (PAS), periodic acid Schiff-diastase (PAS-D), and alcian blue (AB). Immunohistochemistry showed the tumor cells were immuno-positive for cytokeratin (CK) and p63, but CK7, CK20, and S100 were immuno-negative. Therefore, a metastatic tumor in the oral cavity was suggested. However, the CT scan did not show any primary tumors in other sites. Histopathologically, the surgical specimen showed signet-ring-shaped clear cells in the stroma with squamoid cells invading the underlying connective tissue from the surface epithelium, suggesting a diagnosis of clear cell changes in OSCC. Follow-up showed recurrent OSCC at the base of the tongue with lymph node metastasis and distant metastasis in the lung. Only a few cases of clear-cell changes have been reported, with most having a poor prognosis. This case report adds one more case of clear cell changes in the OSCC with a poor prognosis. We reviewed the literature to understand their clinical behavior. Due to the rarity of its (clear cell changes) occurrence, further research is required in order to obtain a better understanding of the clinical behavior and prognosis of these clear cell changes seen in OSCC.
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Yap AU, Apipi M, Ismail SM, Yusof ZYM, Kadir K. Psychometric properties of the Malay Fonseca Anamnestic Index for temporomandibular disorders. Cranio 2022:1-8. [PMID: 35384792 DOI: 10.1080/08869634.2022.2059130] [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: 10/18/2022]
Abstract
OBJECTIVE This study translated/cross-culturally adapted the Fonseca Anamnestic Index (FAI) for temporomandibular disorders (TMDs) into Malay and psychometrically tested the Malay-FAI (FAI-M). METHODS The FAI-M was created according to international guidelines. Internal consistency/test-retest reliability were assessed with Cronbach's alpha/intra-class correlation (ICC) coefficients. Construct and convergent validity were appraised by relating the FAI-M to the Global Oral Health (GOH) questionnaire and Short-form Oral Health Impact Profile (S-OHIP) using Kruskal-Wallis and Spearman's rho correlation (α = 0.05). RESULTS Of the 243 participants enrolled, 54.7% (n = 133) had no TMDs, while TMDs were present in 45.3% (n = 110). The FAI-M presented very good internal consistency (α = 0.90) and test-retest reliability (ICC = 0.99). Theoretically predicted FAI-M score patterns matched the GOH categories, and strong correlations were discerned between FAI-M and S-OHIP (rs = 0.71). CONCLUSION The FAI-M exhibited good psychometric properties and can be applied in Malay-speaking populations.
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Affiliation(s)
- Adrian Ujin Yap
- Department of Dentistry, Ng Teng Fong General Hospital and Faculty of Dentistry, National University Health System, Singapore; National Dental Research Institute Singapore, National Dental Centre Singapore and Duke-NUS Medical School, Singapore Health Services, Singapore
| | - Muzaffar Apipi
- Department of Oral and Maxillofacial Surgery, Slim River Hospital, Perak, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Zamros Yuzadi Mohd Yusof
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Kathreena Kadir
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
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Kallarakkal TG, Ismail SM, Goh YC. Zymogen-poor acinic cell carcinoma of the soft palate with high-grade transformation. Malays J Pathol 2022; 44:121-127. [PMID: 35484895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Acinic cell carcinoma is an uncommon malignant salivary gland tumour accounting for approximately 6-7% of all salivary gland neoplasms. The key diagnostic feature of acinic cell carcinoma is the presence of acinar cell differentiation characterised by cytoplasmic zymogen secretory granules. This tumour shows a variety of growth patterns, including solid, microcystic, follicular and papillary cystic patterns. Acinic cell carcinoma is typically a cytologically low-grade malignancy. Acinic cell carcinomas with high-grade transformation (HGT) are exceedingly rare and are reported to have a more aggressive clinical course than conventional acinic cell carcinoma. This is a case report of this uncommon entity with high-grade transformation arising on the soft palate in a 64-year-old woman.
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Affiliation(s)
- T G Kallarakkal
- Universiti Malaya, Faculty of Dentistry, Department of Oral and Maxillofacial Clinical Sciences, Kuala Lumpur, Malaysia
| | - S M Ismail
- Universiti Malaya, Faculty of Dentistry, Department of Oral and Maxillofacial Clinical Sciences, Kuala Lumpur, Malaysia
| | - Y C Goh
- Universiti Malaya, Faculty of Dentistry, Department of Oral and Maxillofacial Clinical Sciences, Kuala Lumpur, Malaysia.
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Rajendran S, Mohamad Zaini Z, Lim YZ, Kallarakkal TG, Ramanathan A, Chan SW, Goh YC, Tan CC, Lim D, Hassan MK, Kanapathy J, Pathmanathan D, Chan CS, Liew CS, Ismail SM, Cheong SC. Accelerated implementation of teleconsultation services for the monitoring of oral potentially malignant disorders as a result of the COVID-19 pandemic. Oral Oncol 2022; 126:105730. [PMID: 35176655 PMCID: PMC8842584 DOI: 10.1016/j.oraloncology.2022.105730] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Senthilmani Rajendran
- Digital Health Research Unit, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Zuraiza Mohamad Zaini
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Ying Zhi Lim
- Digital Health Research Unit, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | - Thomas George Kallarakkal
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia; Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Siew Wui Chan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Yet Ching Goh
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Chuey Chuan Tan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Daniel Lim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Muhammad Kamil Hassan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Jananezwary Kanapathy
- Digital Health Research Unit, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia
| | | | - Chee Seng Chan
- Centre of Image and Signal Processing, Faculty of Computer Science and Information Technology, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chee Sun Liew
- Department of Computer System & Technology, Faculty of Computer Science & Information Technology, Universiti Malaya, 50603 Kuala Lumpur, Malaysia; Centre for Data Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia.
| | - Sok Ching Cheong
- Digital Health Research Unit, Cancer Research Malaysia, Subang Jaya, Selangor, Malaysia; Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, Malaysia.
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Tahir MKAM, Kadir K, Apipi M, Ismail SM, Yusof ZYM, Yap AU. Translation and Adaptation of the Diagnostic Criteria for Temporomandibular Disorders into the Malay Language: Psychometric Evaluation of Contents. J Oral Facial Pain Headache 2020; 34:323-330. [PMID: 33290438 DOI: 10.11607/ofph.2624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AIMS To develop the Malay DC/TMD through a formal cross-cultural adaptation (CCA) process for use in non-English speaking populations and to determine the reliability and validity of the Malay Graded Chronic Pain Scale (M-GCPS) and Malay Jaw Functional Limitation Scale (M-JFLS). METHODS The English DC/TMD was translated into the Malay language using the forward-backward translation procedures specified in the INfORM guideline. The initial Malay instrument was pre-tested, and any discrepancies were identified and reconciled before producing the final Malay DC/TMD. Psychometric properties of the M-GCPS and M-JFLS were evaluated using a convenience sample of 252 subjects and were assessed using internal consistency and test-retest reliability, as well as face, content, concurrent, and construct validity testing. Internal consistency was assessed using Cronbach's alpha, while test-retest reliability was examined using intraclass correlation coefficient (ICC). Concurrent and construct validity of both domains were performed using Spearman ρ correlation test. In addition, construct and discriminant validity were appraised using Kruskal-Wallis and Mann-Whitney U tests, respectively. RESULTS Cronbach's alpha values for the M-GCPS and M-JFLS were 0.95 and 0.97, respectively. The ICC was 0.98 for the M-GCPS and 0.99 for M-JFLS. The majority of the tested associations for both domains were found to be statistically significant, with good positive correlations. CONCLUSION The M-GCPS and M-JFLS were found to be reproducible and valid. The Malay DC/TMD shows potential for use among Malay-speaking adults.
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Ankathil R, Ismail SM, Mohd Yunus N, Sulong S, Husin A, Abdullah AD, Hassan R. Clinical implications of conventional cytogenetics, fluorescence in situ hybridization (FISH) and molecular testing in chronic myeloid leukaemia patients in the tyrosine kinase inhibitor era - A review. Malays J Pathol 2020; 42:307-321. [PMID: 33361712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chronic myeloid leukaemia (CML) provides an illustrative disease model for both molecular pathogenesis of cancer and rational drug therapy. Imatinib mesylate (IM), a BCR-ABL1 targeted tyrosine kinase inhibitor (TKI) drug, is the first line gold standard drug for CML treatment. Conventional cytogenetic analysis (CCA) can identify the standard and variant Philadelphia (Ph) chromosome, and any additional complex chromosome abnormalities at diagnosis as well as during treatment course. Fluorescence in situ hybridization (FISH) is especially important for cells of CML patients with inadequate or inferior quality metaphases or those with variant Ph translocations. CCA in conjunction with FISH can serve as powerful tools in all phases of CML including the diagnosis, prognosis, risk stratification and monitoring of cytogenetic responses to treatment. Molecular techniques such as reverse transcriptase-polymerase chain reaction (RT-PCR) is used for the detection of BCR-ABL1 transcripts at diagnosis whereas quantitative reverse transcriptase-polymerase chain reaction (qRTPCR) is used at the time of diagnosis as well as during TKI therapy for the quantitation of BCR-ABL1 transcripts to evaluate the molecular response and minimal residual disease (MRD). Despite the excellent treatment results obtained after the introduction of TKI drugs, especially Imatinib mesylate (IM), resistance to TKIs develops in approximately 35% - 40% of CML patients on TKI therapy. Since point mutations in BCR-ABL1 are a common cause of IM resistance, mutation analysis is important in IM resistant patients. Mutations are reliably detected by nested PCR amplification of the translocated ABL1 kinase domain followed by direct sequencing of the entire amplified kinase domain. The objective of this review is to highlight the importance of regular and timely CCA, FISH analysis and molecular testing in the diagnosis, prognosis, assessment of therapeutic efficacy, evaluation of MRD and in the detection of BCR-ABL1 kinase mutations which cause therapeutic resistance in adult CML patients.
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MESH Headings
- Antineoplastic Agents/therapeutic use
- Cytogenetic Analysis/methods
- Drug Resistance, Neoplasm/genetics
- Fusion Proteins, bcr-abl/analysis
- Fusion Proteins, bcr-abl/genetics
- Humans
- Imatinib Mesylate/therapeutic use
- In Situ Hybridization, Fluorescence
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Molecular Targeted Therapy/methods
- Mutation
- Protein Kinase Inhibitors/therapeutic use
- Protein-Tyrosine Kinases/antagonists & inhibitors
- Reverse Transcriptase Polymerase Chain Reaction/methods
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Affiliation(s)
- R Ankathil
- Human Genome Centre, School of Medical Sciences, Health campus, Universiti Sains Malaysia, 16150 Kubang kerian, Kelantan, Malaysia.
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Aminnudin AN, Doss JG, Ismail SM, Chai MB, Abidin MZ, Basri CSJM, Kipli NP, Wei LC. Can post-treatment oral cancer patients' concerns reflect their cancer characteristics, HRQoL, psychological distress level and satisfaction with consultation? Ecancermedicalscience 2020; 14:1118. [PMID: 33209109 PMCID: PMC7652548 DOI: 10.3332/ecancer.2020.1118] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Indexed: 12/30/2022] Open
Abstract
Background Oral cancer and its treatment impact patients' post-treatment outcomes, challenging clinicians to manage them optimally. Addressing patients' concerns is central to holistic patient-centred care. Objectives This study aimed to determine post-treatment oral cancer patients' concerns and its relationship with patients' clinical characteristics, health-related quality of life (HRQoL), psychological distress and patient satisfaction with the follow-up consultation. Methods A total of 85 oral cancer patients were recruited from a three-armed pragmatic RCT study on the patient concerns inventory for head and neck cancer (PCI-H&N), which was conducted at six hospital-based oral maxillofacial specialist clinics throughout Malaysia. Malaysians aged 18 years and above and on follow-ups from 1 month to 5 years or more were eligible. Patients completed the PCI-H&N, functional assessment of cancer therapy -H&N v4.0 and Distress Thermometer at pre-consultation and satisfaction questionnaire at post-consultation. The data were analysed descriptively; multiple linear regression and multivariate logistic regression analyses were used to determine possible predictors of patients' HRQoL and psychological distress. Results 'Recurrence or fear of cancer coming back' (31.8%) was most frequently selected. 43.5% of patients selected ≥4 concerns. A significantly high number of concerns were associated with patients of '1-month to 1-year post-treatment' (n = 84%; p = 0.001). A significant association existed between 'time after treatment completed' and patients' concerns of 'chewing/eating', 'mouth opening', 'swelling', 'weight', 'ability to perform', 'cancer treatment' and 'supplement/diet-related'. 'Chewing/eating' was predicted for low HRQoL (p < 0.0001) followed by 'appearance' and 'ability to perform recreation activities' (personal functions domain). Patients with high psychological distress levels were 14 times more likely to select 'ability to perform recreation activities' and seven times more likely to select 'feeling depressed'. No significant association was identified between patients' concerns and patients' satisfaction with the consultation. Conclusion Routine follow-up consultations should incorporate the PCI-H&N prompt list to enhance patient-centred care approach as the type and number of patients' concerns are shown to reflect their HRQoL and psychological distress.TRIAL REGISTRATION: NMRR-18-3624-45010 (IIR).
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Affiliation(s)
- Ainon Natrah Aminnudin
- Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Oral Health Program, Ministry of Health Malaysia (MOH), 62590 Putrajaya, Malaysia
| | - Jennifer Geraldine Doss
- Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oro-Maxillofacial Surgical & Medical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ma Bee Chai
- Oral Maxillo-Facial Surgery, Sultanah Aminah Hospital, 80100 Johore Bahru, Malaysia
| | - Marzuki Zainal Abidin
- Oral Maxillo-Facial Surgery, Queen Elizabeth Hospital, 88200 Kota Kinabalu, Malaysia
| | | | | | - Lee Chee Wei
- Oral Maxillo-Facial Surgery, Kuala Lumpur General Hospital, 50586 Kuala Lumpur, Malaysia
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Tegginamani AS, Shivakumar VH, Kallarakkal TG, Ismail SM, Abraham MT, Bin Zamzuri AT. Analysis of octamer-binding transcription factor-4 expression in oral leukoplakia. J Oral Maxillofac Pathol 2020; 24:400. [PMID: 33456258 PMCID: PMC7802831 DOI: 10.4103/jomfp.jomfp_272_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 06/12/2020] [Accepted: 06/24/2020] [Indexed: 11/14/2022] Open
Abstract
Background: Oral potentially malignant disorders have a risk for malignant transformation but are difficult to reliably identify and predict which patients are at the risk for malignant transformation. OCT4 has been hypothesized to play a key oncogenic driver in a variety of solid tumors. A deeper understanding of the aberrant molecular pathways which lead to carcinogenesis needs to be identified by the potential markers. Aims: To assess the OCT4 stemness factor in oral leukoplakia for its potential risk to malignant transformation. Settings and Design: 20 cases of oral leukoplakia were obtained from archives at Oral Cancer Research & Coordinating center (OCRCC) Malaysia Subjects and Methods: 20 cases of oral leukoplakia were assessed by OCT4 immunohistochemically. Oral squamous cell carcinoma was used as a control. Result: no expression of OCT 4 was observed in any cases of oral leukoplakia. Conclusion: The molecular mechanisms of Oct4 regulation and in particular of its switch on and off in tissues depends upon its microenvironment, which makes it challenging in fundamental and applied research fields of regenerative medicine and cancer therapy. It's better that patients should undergo multiple biopsies for the early detection of malignant transformation with close follow-up during the first two to three years, a large amount of work remains to be done with multi-marker panel investigation, as cure rates have remained constant over three decades.
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Awd-Allah NA, Ismail SM, Salah El-Dine MM, Mohammed MM. Association between POLG and XRCC1 gene polymorphisms and keratoconus occurrence among Egyptian patients. ACTA ACUST UNITED AC 2020; 95:439-446. [PMID: 32414513 DOI: 10.1016/j.oftal.2020.03.019] [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: 01/22/2020] [Revised: 02/29/2020] [Accepted: 03/24/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Keratoconus is a progressive disorder distinguished by thinning of the corneal tissue and bulging forward into a cone-shaped fashion. Yet its etiology, which is multifactorial, despite intensive research remains elusive. Corneal exposure a reactive oxygen species causing oxidative DNA damage has been reported to be associated with KC and therefore suggesting that DNA base excision repair mechanism might lie behind the pathogenesis of the disease. METHODS We studied the association of three variants in two BER genes (XRCC1 and POLG) and QC occurrence in a cohort of patients from Egypt. Genotyping of the three variants was performed using PCR and restriction enzymes analysis. RESULTS We observed that A allele and A/A genotype of the c.1196A>G variant in the XRCC1 gene were significantly associated with increased KC occurrence while the G allele was associated with decreased KC occurrence. Similarly, the A/A genotype of the c.-1370T>A polymorphism in the POLG gene and the A allele were associated with increased occurrence of KC, while T/A genotype and the T allele were accompanied with decreased occurrence of KC. On the other hand, no association was observed between the c.580C>T variant in the XRCC1 gene and KC occurrence among the studied group of patients. CONCLUSION Our results suggest that c.1196A>G variant of the XRCC1 and c.-1370T>A variant of the POLG gene may be involved in KC pathogenesis and might be considered as a genetic risk factors of the disease among Egyptian population.
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Affiliation(s)
- N A Awd-Allah
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egipto.
| | - S M Ismail
- Medical Molecular Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egipto
| | | | - M M Mohammed
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egipto
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ElSheshtawy AS, Nazzal H, El Shahawy OI, El Baz AA, Ismail SM, Kang J, Ezzat KM. The effect of platelet-rich plasma as a scaffold in regeneration/revitalization endodontics of immature permanent teeth assessed using 2-dimensional radiographs and cone beam computed tomography: a randomized controlled trial. Int Endod J 2020; 53:905-921. [PMID: 32249441 DOI: 10.1111/iej.13303] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [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: 01/17/2020] [Accepted: 03/26/2020] [Indexed: 12/20/2022]
Abstract
AIM To assess the outcomes of platelet-rich plasma as a scaffold in regenerative/revitalization endodontics (RET) using cone beam computed tomography (CBCT) and 2-dimensional radiographs. METHODOLOGY Twenty-six healthy patients with mean age of 12.66 ± 4.47, and immature permanent anterior teeth with necrotic pulps, were randomly allocated to two groups, whereby RET was performed using platelet-rich plasma (PRP, test group) and blood clot (BLC, control group). Changes in root length (RL), root dentinal thickness (RDT), apical foramen width (AFW) and radiographic root area (RRA), were assessed using both radiographic methods, whilst changes in periapical area diameter (PAD) were assessed using CBCT, over a period of 12 months. T-test and chi-square/Fisher's exact tests were used to compare continuous and categorical data between BLC and PRP groups, respectively. Changes in RL, RDT, AFW, RRA and PAD were examined by comparing the two groups (PRP versus BLC) using multilevel modelling, considering the clustering effect of repeated measures of several teeth originating from the same participant. RESULTS Changes in RL, RDT, AFW, RRA and PAD, over time, were found to be significant for both groups. There was, however, no difference between the RET techniques (PRP versus BLC), using both radiographic and CBCT methods. The results of both assessment techniques (CBCT and 2-dimensional radiographic methods) were highly consistent (overall ICC ranged between 0.80 and 0.94). In addition, a significant effect of baseline PAD was found on RL, RRA and AD at 12 months (RL effect = -0.68, P < 0.001; RRA effect = -1.91, P = 0.025; AD effect = 0.08, P = 0.024). CONCLUSION The current study highlights successful and comparable clinical and radiographic outcomes of RET techniques using PRP and BLC. Standardized and calibrated 2-dimensional radiographic assessment was as effective as CBCT in assessing RET outcomes; therefore, the routine use of CBCT in RET is not recommended. Although an effect of baseline periapical lesion diameter on root development outcomes, at 12 months, were observed, more studies are recommended in order to assess such an effect.
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Affiliation(s)
- A S ElSheshtawy
- Department of Endodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - H Nazzal
- Paediatric Dentistry Section, Hamad Dental Center, Hamad Medical Corporation, Doha, Qatar
| | - O I El Shahawy
- Department of Pediatric Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - A A El Baz
- Department of Endodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - S M Ismail
- Department of Endodontics, The National Research Center, Cairo, Egypt
| | - J Kang
- Department of Oral Biology, School of Dentistry, University of Leeds, Leeds, UK
| | - K M Ezzat
- Department of Endodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Yee PS, Zainal NS, Gan CP, Lee BKB, Mun KS, Abraham MT, Ismail SM, Abdul Rahman ZA, Patel V, Cheong SC. Synergistic Growth Inhibition by Afatinib and Trametinib in Preclinical Oral Squamous Cell Carcinoma Models. Target Oncol 2019; 14:223-235. [DOI: 10.1007/s11523-019-00626-8] [Citation(s) in RCA: 3] [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] [Indexed: 12/12/2022]
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Ghani WMN, Razak IA, Doss JG, Yang YH, Rahman ZAA, Ismail SM, Abraham MT, Wan Mustafa WM, Tay KK, Zain RB. Multi-ethnic variations in the practice of oral cancer risk habits in a developing country. Oral Dis 2018; 25:447-455. [DOI: 10.1111/odi.12995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 10/02/2018] [Accepted: 10/11/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Wan Maria Nabillah Ghani
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Ishak Abdul Razak
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Faculty of Dentistry; MAHSA University; Selangor Malaysia
| | - Jennifer Geraldine Doss
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Yi-Hsin Yang
- School of Pharmacy; Kaohsiung Medical University; Kaohsiung City Taiwan
| | - Zainal Ariff Abdul Rahman
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Mannil Thomas Abraham
- Oral Health Division, Ministry of Health; Federal Government Administrative Centre; Putrajaya Malaysia
| | | | - Keng Kiong Tay
- Oral Health Division, Ministry of Health; Federal Government Administrative Centre; Putrajaya Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
- Faculty of Dentistry; MAHSA University; Selangor Malaysia
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Chai SJ, Fong SCY, Gan CP, Pua KC, Lim PVH, Lau SH, Zain RB, Abraham T, Ismail SM, Abdul Rahman ZA, Ponniah S, Patel V, Cheong SC, Lim KP. In vitro evaluation of dual-antigenic PV1 peptide vaccine in head and neck cancer patients. Hum Vaccin Immunother 2018; 15:167-178. [PMID: 30193086 DOI: 10.1080/21645515.2018.1520584] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 12/17/2022] Open
Abstract
Peptide vaccines derived from tumour-associated antigens have been used as an immunotherapeutic approach to induce specific cytotoxic immune response against tumour. We previously identified that MAGED4B and FJX1 proteins are overexpressed in HNSCC patients; and further demonstrated that two HLA-A2-restricted 9-11 amino acid peptides derived from these proteins were able to induce anti-tumour immune responses in vitro independently using PBMCs isolated from these patients. In this study, we evaluated the immunogenicity and efficacy of a dual-antigenic peptide vaccine (PV1), comprised of MAGED4B and FJX1 peptides in HNSCC patients. We first demonstrated that 94.8% of HNSCC patients expressed MAGED4B and/or FJX1 by immunohistochemistry, suggesting that PV1 could benefit the majority of HNSCC patients. The presence of pre-existing MAGED4B and FJX1-specific T-cells was detected using a HLA-A2 dimer assay and efficacy of PV1 to induce T-cell to secrete cytotoxic cytokine was evaluated using ELISPOT assay. Pre-existing PV1-specific T-cells were detected in all patients. Notably, we demonstrated that patients' T-cells were able to secrete cytotoxic cytokines upon exposure to target cells expressing the respective antigen post PV1 stimulation. Furthermore, patients with high expression of MAGED4B and FJX1 in their tumours were more responsive to PV1 stimulation, demonstrating the specificity of the PV1 peptide vaccine. Additionally, we also demonstrated the expression of MAGED4B and FJX1 in breast, lung, colon, prostate and rectal cancer suggesting the potential use of PV1 in these cancers. In summary, PV1 could be a good vaccine candidate for the treatment of HNSCC patients and other cancers expressing these antigens.
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Affiliation(s)
- San Jiun Chai
- a Cancer Research Malaysia , Subang Jaya , Selangor , Malaysia
| | | | - Chai Phei Gan
- a Cancer Research Malaysia , Subang Jaya , Selangor , Malaysia
| | - Kin Choo Pua
- b Department of Otorhinolaryngology , Hospital Pulau Pinang , Penang , Malaysia
| | - Paul Vey Hong Lim
- c Ear, Nose and Throat Department , Tung Shin Hospital , Kuala Lumpur , Malaysia
| | - Shin Hin Lau
- d Stomatology Unit , Cancer Research Centre, Institute for Medical Research , Kuala Lumpur , Malaysia
| | - Rosnah Binti Zain
- e Faculty of Dentistry , MAHSA University , Selangor , Malaysia.,f Oral Cancer Research and Coordinating Centre, Faculty of Dentistry , University of Malaya , Kuala Lumpur , Malaysia
| | - Thomas Abraham
- g Department of Oral & Maxillofacial Surgery , Tengku Ampuan Rahimah Hospital , Klang , Malaysia
| | - Siti Mazlipah Ismail
- h Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry , University of Malaya , Kuala Lumpur , Malaysia
| | - Zainal Ariff Abdul Rahman
- h Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry , University of Malaya , Kuala Lumpur , Malaysia
| | - Sathibalan Ponniah
- i Cancer Vaccine Development Program, Department of Surgery , Uniformed Services University of the Health Sciences , Bethesda , MD , USA
| | - Vyomesh Patel
- a Cancer Research Malaysia , Subang Jaya , Selangor , Malaysia
| | - Sok Ching Cheong
- a Cancer Research Malaysia , Subang Jaya , Selangor , Malaysia.,h Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry , University of Malaya , Kuala Lumpur , Malaysia
| | - Kue Peng Lim
- a Cancer Research Malaysia , Subang Jaya , Selangor , Malaysia
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Vincent-Chong VK, Salahshourifar I, Woo KM, Anwar A, Razali R, Gudimella R, Rahman ZAA, Ismail SM, Kallarakkal TG, Ramanathan A, Wan Mustafa WM, Abraham MT, Tay KK, Zain RB. Genome wide profiling in oral squamous cell carcinoma identifies a four genetic marker signature of prognostic significance. PLoS One 2017; 12:e0174865. [PMID: 28384287 PMCID: PMC5383235 DOI: 10.1371/journal.pone.0174865] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 03/16/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Cancers of the oral cavity are primarily oral squamous cell carcinomas (OSCCs). Many of the OSCCs present at late stages with an exceptionally poor prognosis. A probable limitation in management of patients with OSCC lies in the insufficient knowledge pertaining to the linkage between copy number alterations in OSCC and oral tumourigenesis thereby resulting in an inability to deliver targeted therapy. OBJECTIVES The current study aimed to identify copy number alterations (CNAs) in OSCC using array comparative genomic hybridization (array CGH) and to correlate the CNAs with clinico-pathologic parameters and clinical outcomes. MATERIALS AND METHODS Using array CGH, genome-wide profiling was performed on 75 OSCCs. Selected genes that were harboured in the frequently amplified and deleted regions were validated using quantitative polymerase chain reaction (qPCR). Thereafter, pathway and network functional analysis were carried out using Ingenuity Pathway Analysis (IPA) software. RESULTS Multiple chromosomal regions including 3q, 5p, 7p, 8q, 9p, 10p, 11q were frequently amplified, while 3p and 8p chromosomal regions were frequently deleted. These findings were in confirmation with our previous study using ultra-dense array CGH. In addition, amplification of 8q, 11q, 7p and 9p and deletion of 8p chromosomal regions showed a significant correlation with clinico-pathologic parameters such as the size of the tumour, metastatic lymph nodes and pathological staging. Co-amplification of 7p, 8q, 9p and 11q regions that harbored amplified genes namely CCND1, EGFR, TPM2 and LRP12 respectively, when combined, continues to be an independent prognostic factor in OSCC. CONCLUSION Amplification of 3q, 5p, 7p, 8q, 9p, 10p, 11q and deletion of 3p and 8p chromosomal regions were recurrent among OSCC patients. Co-alteration of 7p, 8q, 9p and 11q was found to be associated with clinico-pathologic parameters and poor survival. These regions contain genes that play critical roles in tumourigenesis pathways.
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Affiliation(s)
- Vui King Vincent-Chong
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Iman Salahshourifar
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Kar Mun Woo
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Arif Anwar
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Rozaimi Razali
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Ranganath Gudimella
- Sengenics Sdn Bhd, High Impact Research (HIR) Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Mannil Thomas Abraham
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Klang, Selangor Darul Ehsan, Malaysia
| | - Keng Kiong Tay
- Department of Oral Surgery, Hospital Umum Kuching, Kuching, Sarawak, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail:
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Kazakydasan S, Rahman ZAA, Ismail SM, Abraham MT, Kallarakkal TG. Prognostic significance of VEGF-C in predicting micrometastasis and isolated tumour cells in N0 oral squamous cell carcinoma. J Oral Pathol Med 2016; 46:194-200. [PMID: 27417330 DOI: 10.1111/jop.12476] [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] [Accepted: 06/16/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Lymph node metastasis in oral squamous cell carcinoma (OSCC) is a well-known independent prognostic factor. However, the identification of occult tumour cells within the lymph nodes has remained a challenge for the pathologist as well as the clinician. OBJECTIVE The aim of this study was to determine the prevalence of micrometastasis and isolated tumour cells (ITCs) in pathologically staged N0 OSCC of the tongue and buccal mucosa and to assess its correlation with vascular endothelial growth factor C, (VEGF-C) expression in the primary tumour. METHODS Thirty-four cases of N0 OSCC comprising of 17 cases each from the tongue and buccal mucosa were evaluated by immunohistochemistry for VEGF-C expression. The corresponding lymph nodes from levels I and II were pathologically examined and cross-detected for micrometastasis and ITCs with desmoglein 3 (DSG3). RESULTS The prevalence of micrometastasis and ITCs in OSCC of the tongue and buccal mucosa was 23.5% and 17.6%, respectively. A total of 12 out of 151 lymph nodes contained micrometastatic tumour foci and ITCs. A higher expression of VEGF-C in the primary tumour was associated with a greater probability for the occurrence of micrometastasis and ITCs in the lymph nodes. CONCLUSION High expression of VEGF-C in the primary tumour may be a good determinant for detection of occult tumour cells in the lymph nodes of OSCC cases.
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Affiliation(s)
- Sarvambika Kazakydasan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Klang, Selangor, Malaysia
| | - Thomas George Kallarakkal
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Auzair LBM, Vincent-Chong VK, Ghani WMN, Kallarakkal TG, Ramanathan A, Lee CE, Rahman ZAA, Ismail SM, Abraham MT, Zain RB. Caveolin 1 (Cav-1) and actin-related protein 2/3 complex, subunit 1B (ARPC1B) expressions as prognostic indicators for oral squamous cell carcinoma (OSCC). Eur Arch Otorhinolaryngol 2015; 273:1885-93. [PMID: 26138391 DOI: 10.1007/s00405-015-3703-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 12/17/2014] [Accepted: 06/25/2015] [Indexed: 12/22/2022]
Abstract
Caveolin-1 (Cav-1) and Actin-Related Protein 2/3 Complex, Subunit 1B (ARPC1B) have been implicated in various human cancers, yet its role in tumorigenesis remains controversial. Therefore, this study aims to determine the protein expression of these two genes in oral squamous cell carcinomas (OSCCs) and to evaluate the clinical and prognostic impact of these genes in OSCC. Protein expressions of these two genes were determined by immunohistochemistry technique. The association between Cav-1 and ARPC1B with clinico-pathological parameters was evaluated by Chi-square test (or Fisher exact test where appropriate). Correlation between the protein expressions of these 2 genes with survival was analyzed using Kaplan-Meier and Cox regression models. Cav-1 and ARPC1B were found to be significantly over-expressed in OSCC compared to normal oral mucosa (p = 0.002 and p = 0.033, respectively). Low level of ARPC1B protein expression showed a significant correlation with lymph node metastasis (LNM) (p = 0.010) and advanced tumor staging (p = 0.003). Kaplan-Meier survival analyses demonstrated that patients with over-expression of Cav-1 protein were associated with poor prognosis (p = 0.030). Adjusted multivariate Cox regression model revealed that over-expression of Cav-1 remained as an independent significant prognostic factor for OSCC (HRR = 2.700, 95 % CI 1.013-7.198, p = 0.047). This study demonstrated that low-expression of ARPC1B is significantly associated with LNM and advanced tumor staging whereas high expression of Cav-1 can be a prognostic indicator for poor prognosis in OSCC patients.
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Affiliation(s)
- Lukman Bin Md Auzair
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Vui King Vincent-Chong
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Wan Maria Nabillah Ghani
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Chia Ee Lee
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral & Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health, Klang, Selangor, Malaysia
| | - Rosnah Binti Zain
- Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, Oral Cancer Research and Coordinating Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
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Salahshourifar I, Vincent-Chong VK, Chang HY, Ser HL, Ramanathan A, Kallarakkal TG, Rahman ZAA, Ismail SM, Prepageran N, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Downregulation of CRNN gene and genomic instability at 1q21.3 in oral squamous cell carcinoma. Clin Oral Investig 2015; 19:2273-83. [DOI: 10.1007/s00784-015-1467-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 03/23/2015] [Indexed: 12/14/2022]
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Hartanto FK, Karen-Ng LP, Vincent-Chong VK, Ismail SM, Mustafa WMW, Abraham MT, Tay KK, Zain RB. KRT13, FAIM2 and CYP2W1 mRNA Expression in Oral Squamous Cell Carcinoma Patients with Risk Habits. Asian Pac J Cancer Prev 2015; 16:953-8. [DOI: 10.7314/apjcp.2015.16.3.953] [Citation(s) in RCA: 5] [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] [Indexed: 11/10/2022] Open
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Lee CE, Vincent-Chong VK, Ramanathan A, Kallarakkal TG, Karen-Ng LP, Ghani WMN, Rahman ZAA, Ismail SM, Abraham MT, Tay KK, Mustafa WMW, Cheong SC, Zain RB. Collagen Triple Helix Repeat Containing-1 (CTHRC1) Expression in Oral Squamous Cell Carcinoma (OSCC): Prognostic Value and Clinico-Pathological Implications. Int J Med Sci 2015; 12:937-45. [PMID: 26664254 PMCID: PMC4661291 DOI: 10.7150/ijms.11605] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 08/17/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Collagen Triple Helix Repeat Containing 1 (CTHRC1) is a protein often found to be over-expressed in various types of human cancers. However, correlation between CTHRC1 expression level with clinico-pathological characteristics and prognosis in oral cancer remains unclear. Therefore, this study aimed to determine mRNA and protein expression of CTHRC1 in oral squamous cell carcinoma (OSCC) and to evaluate the clinical and prognostic impact of CTHRC1 in OSCC. METHODS In this study, mRNA and protein expression of CTHRC1 in OSCCs were determined by quantitative PCR and immunohistochemistry, respectively. The association between CTHRC1 and clinico-pathological parameters were evaluated by univariate and multivariate binary logistic regression analyses. Correlation between CTHRC1 protein expressions with survival were analysed using Kaplan-Meier and Cox regression models. RESULTS Current study demonstrated CTHRC1 was significantly overexpressed at the mRNA level in OSCC. Univariate analyses indicated a high-expression of CTHRC1 that was significantly associated with advanced stage pTNM staging, tumour size ≥ 4 cm and positive lymph node metastasis (LNM). However, only positive LNM remained significant after adjusting with other confounder factors in multivariate logistic regression analyses. Kaplan-Meier survival analyses and Cox model demonstrated that patients with high-expression of CTHRC1 protein were associated with poor prognosis and is an independent prognostic factor in OSCC. CONCLUSION This study indicated that over-expression of CTHRC1 potentially as an independent predictor for positive LNM and poor prognosis in OSCC.
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Affiliation(s)
- Chia Ee Lee
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Vui King Vincent-Chong
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Lee Peng Karen-Ng
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Wan Maria Nabillah Ghani
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- 3. Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Selangor Darul Ehsan, Klang, Malaysia
| | - Keng Kiong Tay
- 4. Department of Oral Surgery, Hospital Umum Kuching, Sarawak, Malaysia
| | | | - Sok Ching Cheong
- 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 6. Oral Cancer Research Team, Cancer Research Initiatives Foundation (CARIF), Selangor Darul Ehsan, Malaysia
| | - Rosnah Binti Zain
- 1. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; ; 2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Vincent-Chong VK, Karen-Ng LP, Abdul Rahman ZA, Yang YH, Anwar A, Zakaria Z, Jayaprasad Pradeep P, Kallarakkal TG, Kiong Tay K, Thomas Abraham M, Mazlipah Ismail S, Zain RB. Distinct pattern of chromosomal alterations and pathways in tongue and cheek squamous cell carcinoma. Head Neck 2014; 36:1268-1278. [PMID: 31615169 DOI: 10.1002/hed.23448] [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: 05/17/2012] [Revised: 05/10/2013] [Accepted: 08/01/2013] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate the cause of behavioral difference between tongue and cheek squamous cell carcinomas (SCCs) by verifying the copy number alterations (CNAs). METHODS Array comparative genomic hybridization (aCGH) was used to profile unique deletions and amplifications that are involved with tongue and cheek SCC, respectively. This was followed by pathway analysis relating to CNA genes from both sites. RESULTS The most frequently amplified regions in tongue SCC were 4p16.3, 11q13.4, and 13q34; whereas the most frequently deleted region was 19p12. For cheek SCC, the most frequently amplified region was identified on chromosome 9p24.1-9p23; whereas the most common deleted region was located on chromosome 8p23.1. Further analysis revealed that the most significant unique pathway related to tongue and cheek SCCs was the cytoskeleton remodeling and immune response effect on the macrophage differentiation pathway. CONCLUSION This study has showed the different genetic profiles and biological pathways between tongue and cheek SCCs. © 2013 Wiley Periodicals, Inc. Head Neck 36: 1268-1278, 2014.
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Affiliation(s)
- Vui King Vincent-Chong
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Lee Peng Karen-Ng
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Yi-Hsin Yang
- Department of Dental Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung
| | - Arif Anwar
- Sengenics Sdn Bhd, Petaling Jaya, Selangor Darul Ehsan, Malaysia
| | - Zubaidah Zakaria
- Department of Haematology, Institute for Medical Research, Jalan Pahang, Kuala Lumpur, Malaysia
| | - Padmaja Jayaprasad Pradeep
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Keng Kiong Tay
- Oral Health Division, Ministry of Health, Putrajaya, Malaysia
| | | | - Siti Mazlipah Ismail
- Department of Oral Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Center, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.,Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Lim KP, Chun NAL, Ismail SM, Abraham MT, Yusoff MN, Zain RB, Ngeow WC, Ponniah S, Cheong SC. CD4+CD25hiCD127low regulatory T cells are increased in oral squamous cell carcinoma patients. PLoS One 2014; 9:e103975. [PMID: 25153698 PMCID: PMC4143252 DOI: 10.1371/journal.pone.0103975] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [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: 02/03/2014] [Accepted: 07/08/2014] [Indexed: 12/19/2022] Open
Abstract
Regulatory T cells (Tregs), a subset of CD4+ T cells plays a pivotal role in regulating the immune system. An increase in Treg numbers enables cancer progression by dampening the immune system and allowing tumor cells to evade immune detection and destruction. An increase in Treg numbers and expression of inhibitory cytokines including TGF-β and IL-10 are mechanisms by which Tregs exert their immune suppressive function. However, the presence of Tregs and inhibitory cytokines in oral cancer patients is still unclear. In this study, the presence of circulating Tregs in 39 oral cancer patients and 24 healthy donors was examined by studying the presence of the CD4+CD25hiCD127low cell population in their peripheral blood mononuclear cells using flow cytometry. Serum levels of TGF-β and IL-10 were measured by ELISA. T cell subsets of OSCC patients were found to differ significantly from healthy donors where a decrease in CD8+ cytotoxic T cells and an increase in Tregs (CD4+CD25hiCD127low) were observed. Further, the ratio of CD8+ T cells/Tregs was also decreased in patients compared to healthy donors. The presence of Tregs was accompanied by a decrease in IL-10 but not TGF-β secretion in OSCC patients when compared to donors; in addition, the analysis also revealed that an increased presence of Tregs was accompanied by better patient survival. Amongst OSCC patients, smokers had significantly higher levels of TGF-β. It is apparent that the immune system is compromised in OSCC patients and the characterization of the Treg subpopulation could form a basis for improving our understanding of the perturbations in the immune system that occur during OSCC tumorigenesis.
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Affiliation(s)
- Kue Peng Lim
- Oral Cancer Research Team, Cancer Research Initiatives Foundation (CARIF), 2 Floor Outpatient Centre, Subang Jaya, Selangor, Malaysia
| | - Nicole Ai Leng Chun
- Oral Cancer Research Team, Cancer Research Initiatives Foundation (CARIF), 2 Floor Outpatient Centre, Subang Jaya, Selangor, Malaysia
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mannil Thomas Abraham
- Department of Oral & Maxillofacial Surgery, Tengku Ampuan Rahimah Hospital, Klang, Malaysia
| | - Mohd Nury Yusoff
- Department of Oral & Maxillofacial Surgery, Tengku Ampuan Rahimah Hospital, Klang, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Wei Cheong Ngeow
- Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Sathibalan Ponniah
- Cancer Vaccine Development Program, Uniformed Services University of the Health Sciences, Bethesda, Maryland, United States of America
| | - Sok Ching Cheong
- Oral Cancer Research Team, Cancer Research Initiatives Foundation (CARIF), 2 Floor Outpatient Centre, Subang Jaya, Selangor, Malaysia
- Department of Oro-Maxillofacial Surgery and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Yong ZWE, Zaini ZM, Kallarakkal TG, Karen-Ng LP, Rahman ZAA, Ismail SM, Sharifah NA, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Genetic alterations of chromosome 8 genes in oral cancer. Sci Rep 2014; 4:6073. [PMID: 25123227 PMCID: PMC4133705 DOI: 10.1038/srep06073] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 06/27/2014] [Indexed: 12/13/2022] Open
Abstract
The clinical relevance of DNA copy number alterations in chromosome 8 were investigated in oral cancers. The copy numbers of 30 selected genes in 33 OSCC patients were detected using the multiplex ligation-dependent probe amplification (MLPA) technique. Amplifications of the EIF3E gene were found in 27.3% of the patients, MYC in 18.2%, RECQL4 in 15.2% and MYBL1 in 12.1% of patients. The most frequent gene losses found were the GATA4 gene (24.2%), FGFR1 gene (24.2%), MSRA (21.2) and CSGALNACT1 (12.1%). The co-amplification of EIF3E and RECQL4 was found in 9% of patients and showed significant association with alcohol drinkers. There was a significant association between the amplification of EIF3E gene with non-betel quid chewers and the negative lymph node status. EIF3E amplifications did not show prognostic significance on survival. Our results suggest that EIF3E may have a role in the carcinogenesis of OSCC in non-betel quid chewers.
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Affiliation(s)
- Zachary Wei Ern Yong
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zuraiza Mohamad Zaini
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Lee Peng Karen-Ng
- Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Noor Akmal Sharifah
- Department of Pathology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur
| | | | - Mannil Thomas Abraham
- Department of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Klang, Malaysia
| | - Keng Kiong Tay
- Oral Surgery Clinic, Hospital Umum Sarawak, Kuching, Malaysia
| | - Rosnah Binti Zain
- 1] Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia [2] Oral Cancer Research &Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Abstract
BACKGROUND The advent of molecular techniques has revolutionized the ability of scientists to estimate the sex of individuals. Forensic odontology plays an important role in establishing the sex of victims with bodies mutilated beyond recognition due to major disaster. The genetic difference between males and females is defined by the presence or absence of the Y-chromosome. The use of alphoid-repeat primers in sex estimation was first applied on dried blood. Generally, the X, Y alphoid repeats blind test attest to the accuracy of genetic testing, and also point the potential for occasional error in morphometric sexing. AIM To estimate genetic sex of dry human teeth specimens from Sokoto, Northwestern Nigeria, using polymerase chain reaction (PCR). MATERIALS AND METHODS A single-blind study of DNA analysis for sex estimation of nine dry human teeth specimens from Sokoto, Northwestern Nigeria, through PCR, using alphoid repeats primers, was undertaken. RESULTS The genetic sex of each group of the teeth samples were accurately (100%) identified. For each group of teeth, PCR Sensitivity = 100%, Specificity = 0%, Predictive value of positive test = 100%, Predictive value of negative test = 0%, False positive rate = 0%, False negative rate = 0%, Efficiency of test = 100%. Fisher's exact probability test P = 1. Z-test: z- and P values were invalid. CONCLUSION This study has demonstrated the successful use of alphoid-repeat primers in genetic sex identification of human dry teeth samples from Sokoto, Northwestern Nigeria. This is the first known study estimating the sex of human dry teeth specimens by means of PCR in Nigeria. There is need for further studies in Nigeria to complement the findings of this study.
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Affiliation(s)
- AD Zagga
- Department of Anatomy, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - H. OON Ahmed
- Department of Paediatrics, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - SM Ismail
- Department of Medical Molecular Genetics, Division of Human Genetics and Genome Research, National Research Centre, Cairo, Egypt
| | - AA Tadros
- Department of Anatomy, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
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Ba-Saddik IA, Munibari AA, Alhilali AM, Ismail SM, Murshed FM, Coulter JBS, Cuevas LE, Hart CA, Brabin BJ, Parry CM. Prevalence of Group A beta-haemolytic Streptococcus isolated from children with acute pharyngotonsillitis in Aden, Yemen. Trop Med Int Health 2014; 19:431-9. [PMID: 24405659 DOI: 10.1111/tmi.12264] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 11/30/2022]
Abstract
OBJECTIVES To estimate the prevalence of Group A beta-haemolytic streptococcus (GAS) and non-GAS infections among children with acute pharyngotonsillitis in Aden, Yemen, to evaluate the value of a rapid diagnostic test and the McIsaac score for patient management in this setting and to determine the occurrence of emm genotypes among a subset of GAS isolated from children with acute pharyngotonsillitis and a history of acute rheumatic fever (ARF) or rheumatic heart disease (RHD). METHODS Group A beta-haemolytic streptococcus infections in school-aged children with acute pharyngotonsillitis in Aden, Yemen, were diagnosed by a rapid GAS antigen detection test (RADT) and/or GAS culture from a throat swab. The RADT value and the McIsaac screening score for patient management were evaluated. The emm genotype of a subset of GAS isolates was determined. RESULTS Group A beta-haemolytic streptococcus pharyngotonsillitis was diagnosed in 287/691 (41.5%; 95% CI 37.8-45.3) children. Group B, Group C and Group G beta-haemolytic streptococci were isolated from 4.3% children. The RADT had a sensitivity of 238/258 (92.2%) and specificity of 404/423 (95.5%) against GAS culture. A McIsaac score of ≥4 had a sensitivity of 93% and a specificity of 82% for confirmed GAS infection. The emm genotypes in 21 GAS isolates from children with pharyngitis and a history of ARF and confirmed RHD were emm87 (11), emm12 (6), emm28 (3) and emm5 (1). CONCLUSION This study demonstrates a very high prevalence of GAS infections in Yemeni children and the value of the RADT and the McIsaac score in this setting. More extensive emm genotyping is necessary to understand the local epidemiology of circulating strains.
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Affiliation(s)
- I A Ba-Saddik
- Paediatric Department, Faculty of Medicine and Health Sciences, University of Aden, Aden, Yemen
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Vincent-Chong VK, Ismail SM, Abdul Rahman ZA, Sharifah NA, Anwar A, Pradeep PJ, Ramanathan A, Karen-Ng LP, Kallarakkal TG, Wan Mustafa WM, Abraham MT, Tay KK, Zain RB. PP074. Oral Oncol 2013. [DOI: 10.1016/j.oraloncology.2013.03.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Vincent-Chong VK, Anwar A, Karen-Ng LP, Cheong SC, Yang YH, Pradeep PJ, Rahman ZAA, Ismail SM, Zaini ZM, Prepageran N, Kallarakkal TG, Ramanathan A, Mohayadi NABM, Rosli NSBM, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Genome wide analysis of chromosomal alterations in oral squamous cell carcinomas revealed over expression of MGAM and ADAM9. PLoS One 2013; 8:e54705. [PMID: 23405089 PMCID: PMC3566089 DOI: 10.1371/journal.pone.0054705] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 12/14/2012] [Indexed: 12/26/2022] Open
Abstract
Despite the advances in diagnosis and treatment of oral squamous cell carcinoma (OSCC), mortality and morbidity rates have not improved over the past decade. A major drawback in diagnosis and treatment of OSCC is the lack of knowledge relating to how genetic instability in oral cancer genomes affects oral carcinogenesis. Hence, the key aim of this study was to identify copy number alterations (CNAs) that may be cancer associated in OSCC using high-resolution array comparative genomic hybridization (aCGH). To our knowledge this is the first study to use ultra-high density aCGH microarrays to profile a large number of OSCC genomes (n = 46). The most frequently amplified CNAs were located on chromosome 11q11(52%), 2p22.3(52%), 1q21.3-q22(54%), 6p21.32(59%), 20p13(61%), 7q34(52% and 72%),8p11.23-p11.22(80%), 8q11.1-q24.4(54%), 9q13-q34.3(54%), 11q23.3-q25(57%); 14q21.3-q31.1(54%); 14q31.3-q32.33(57%), 20p13-p12.3(54%) and 20q11.21-q13.33(52%). The most frequently deleted chromosome region was located on 3q26.1 (54%). In order to verify the CNAs from aCGH using quantitative polymerase chain reaction (qPCR), the three top most amplified regions and their associated genes, namely ADAM5P (8p11.23-p11.22), MGAM (7q34) and SIRPB1 (20p13.1), were selected in this study. The ADAM5P locus was found to be amplified in 39 samples and deleted in one; MGAM (24 amplifications and 3 deletions); and SIRPB1 (12 amplifications, others undetermined). On the basis of putative cancer-related annotations, two genes, namely ADAM metallopeptidase domain 9 (ADAM9) and maltase-glucoamylase alpha-glucosidase (MGAM), that mapped to CNA regions were selected for further evaluation of their mRNA expression using reverse transcriptase qPCR. The over-expression of MGAM was confirmed with a 6.6 fold increase in expression at the mRNA level whereas the fold change in ADAM9 demonstrated a 1.6 fold increase. This study has identified significant regions in the OSCC genome that were amplified and resulted in consequent over-expression of the MGAM and ADAM9 genes that may be utilized as biological markers for OSCC.
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Affiliation(s)
- Vui King Vincent-Chong
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Arif Anwar
- Sengenics Sdn Bhd, Petaling Jaya, Selangor Darul Ehsan, Malaysia
| | - Lee Peng Karen-Ng
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Sok Ching Cheong
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Oral Cancer Research Team, Cancer Research Initiatives Foundation, Selangor Darul Ehsan, Malaysia
| | - Yi-Hsin Yang
- Department of Dental Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Padmaja Jayaprasad Pradeep
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Zuraiza Mohamad Zaini
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Narayanan Prepageran
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Otorhinolaringology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Thomas George Kallarakkal
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Anand Ramanathan
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | | | | | - Keng Kiong Tay
- Oral Health Division, Ministry of Health, Putrajaya, Malaysia
| | - Rosnah Binti Zain
- Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail:
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Saleh A, Yang YH, Wan Abd Ghani WMN, Abdullah N, Doss JG, Navonil R, Abdul Rahman ZA, Ismail SM, Talib NA, Zain RB, Cheong SC. Promoting oral cancer awareness and early detection using a mass media approach. Asian Pac J Cancer Prev 2013; 13:1217-24. [PMID: 22799308 DOI: 10.7314/apjcp.2012.13.4.1217] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND AND AIM Less than 50% of oral cancer cases are diagnosed at early stages of the disease and this is in part due to poor awareness and lack of knowledge on the signs and symptoms of oral cancer. This study sought to measure the baseline awareness of oral cancer in Malaysia and aimed to increase public awareness and knowledge of oral cancer using a mass media campaign. METHODS Baseline awareness and impact of the campaign was measured using self-administered questionnaires sent via email to individuals. The campaign was aired on two national television channels and the reach was monitored through an independent programme monitoring system. RESULTS 78.2% of respondents had heard of oral cancer, and this increased significantly after the campaign. However, the ability to recognize signs and symptoms remains unchanged. We found that the level of awareness differed between the distinct ethnic subgroups and the reach of the campaign was not uniform across all ethnicities. CONCLUSION This substantial study to measure the oral cancer awareness in Malaysia provides important baseline data for the planning of public health policies. Despite encouraging evidence that a mass media campaign could increase the awareness of oral cancer, further research is required to address the acceptability, comprehensiveness and effectiveness. Furthermore, different campaign approaches may be required for specific ethnic groups in a multi-ethnic country such as Malaysia.
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Affiliation(s)
- Amyza Saleh
- Oral Cancer Research Team, Cancer Research Initiatives Foundation, Sime Darby Medical Centre, Subang, Malaysia
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Sam KK, Gan CP, Yee PS, Chong CE, Lim KP, Karen-Ng LP, Chang WS, Nathan S, Rahman ZAA, Ismail SM, Cheong SC. Novel MDM2 splice variants identified from oral squamous cell carcinoma. Oral Oncol 2012; 48:1128-35. [DOI: 10.1016/j.oraloncology.2012.05.016] [Citation(s) in RCA: 8] [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] [Received: 02/21/2012] [Revised: 05/09/2012] [Accepted: 05/21/2012] [Indexed: 01/10/2023]
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Vincent-Chong VK, Ismail SM, Rahman ZAA, Sharifah NA, Anwar A, Pradeep PJ, Ramanathan A, Karen-Ng LP, Kallarakkal TG, Mustafa WMW, Abraham MT, Tay KK, Zain RB. Genome-wide analysis of oral squamous cell carcinomas revealed over expression of ISG15, Nestin and WNT11. Oral Dis 2012; 18:469-76. [DOI: 10.1111/j.1601-0825.2011.01894.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Noor Siah AA, Ho SE, Jafaar MZ, Choy YC, Das S, Ismail SM, Barnett A. Information needs of family members of critically ill patients in intensive care unit of a tertiary hospital. Clin Ter 2012; 163:63-67. [PMID: 22362236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
UNLABELLED BACKGROUND AND AIMS. The experience in intensive care unit (ICU) has created an intense emotional situation both to patients and their family members. The aim of this study was to determine the family members information needs of critically ill patients in ICU. MATERIALS AND METHODS A descriptive cross-sectional study was conducted on 200 family members of patients admitted in ICU. A face to face interview was conducted and a self-report questionnaire of the Critical Care Family Needs Inventory (CCFNI) was used. RESULTS Findings reported CCFNI five sub-attributes that ranked from highest to lowest included: support (mean 39.13 ± 6.189); proximity (mean 27.17 ± 3.384); information (mean 24.25 ± 3.093); assurance (mean 22.67 ± 1.862) and comfort (mean 16.24 ± 2.776). There were no significant differences in needs between family members with different gender (p >0.05). However, there were significant differences in support needs between family members with admission to ICU with (t=-2.111; p <0.05). There were significant differences in assurance needs (F=3.542; p <0.05) and information needs (F=3.681; p <0.05) between family members with age. There were no significant differences in needs between family members with different education level (p >0.05) whereas assurance needs were significant differences with education level of (F=3.542; p <0.05). CONCLUSION The results suggest that family members perceived support and proximity as the most crucial need. Comfort need was viewed as least important. Although this study was conducted in a tertiary hospital, the findings could still provide insight for nurses to improve the delivery of care to patients and family members.
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Affiliation(s)
- A A Noor Siah
- Department of Nursing, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan, Yaacob Latiff, 56000, Cheras, Kuala Lumpur, Malaysia
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Gan CP, Hamid S, Hor SY, Zain RB, Ismail SM, Wan Mustafa WM, Teo SH, Saunders N, Cheong SC. Valproic acid: growth inhibition of head and neck cancer by induction of terminal differentiation and senescence. Head Neck 2011; 34:344-53. [PMID: 21438066 DOI: 10.1002/hed.21734] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/11/2010] [Accepted: 12/22/2010] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND There are limited studies on the effects of drugs that modulate epigenetic regulation for head and neck squamous cell carcinoma (HNSCC). This study determined the effect of valproic acid (VPA) on HNSCC. METHODS Growth inhibition effects of VPA alone or in combination with 5-aza-2'deoxycytidine (5-aza-dC) or all-trans retinoic acid (ATRA) was evaluated with MTT and clonogenic assays on 5 HNSCC cell lines. The mechanism of growth inhibition was investigated by looking at markers of terminal differentiation and senescence. RESULTS Growth inhibition profiles of HNSCC cell lines varied in response to VPA. Inhibition of clonogenic survival in response to VPA was associated with an upregulation of p21, expression of terminal differentiation markers, and cellular senescence. Notably, a combination treatment of 5-Aza-dC-VPA-ATRA enhanced growth inhibition in cells resistant to VPA. CONCLUSION VPA is a potent inhibitor of proliferation in some HNSCC cell lines, and may be used to treat HNSCC.
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Affiliation(s)
- Chai Phei Gan
- Oral Cancer Research Team, Cancer Research Initiatives Foundation, Second Floor, Outpatient Centre, Sime Darby Medical Centre, 47500 Subang Jaya, Selangor, Malaysia
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Mahdey HM, Ramanathan A, Ismail SM, Abraham MT, Jamaluddin M, Zain RB. Cyclin D1 amplification in tongue and cheek squamous cell carcinoma. Asian Pac J Cancer Prev 2011; 12:2199-2204. [PMID: 22296356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
INTRODUCTION Several molecular markers have been studied for their usefulness as prognostic markers in oral squamous cell carcinoma (OSCC). One such molecular marker is cyclin D1 which is a proto-oncogene located on 11q13 in humans. OBJECTIVE To explore the feasibility of using cyclin D1 as a prognostic marker in tongue and cheek SCC by the fluorescent-in-situ hybridization (FISH) method. METHODS Fifty paraffin-embedded samples (25 each of cheek and tongue SCCs) were obtained from the archives of the Oral Pathology Diagnostic Laboratory. Sociodemographic data, histopathologic diagnoses, lymph node status and survival data were obtained from the Malaysian Oral Cancer Database and Tissue Bank System (MOCDTBS)coordinated by the Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya. The FISH technique was used to detect the amplification of cyclin D1 using the Vysis protocol. Statistical correlations of cyclin D1 with site and lymph node status were analyzed using the Fisher exact test. Kaplan-Meier and Log Rank (Mantel-Cox) test were used to analyze cyclin D1 amplification and median survival time. RESULTS Positive amplification of cyclin D1 was detected in 72% (36) of OSCCs. Detection of positive amplification for cyclin D1 was observed in 88% (22) and 56% (14) of the tongue and cheek tumors, respectively, where the difference was statistically significant (P=0.012). Lymph node metastasis of cheek SCCs showed a trend towards a significant association (P= 0.098) with cyclin D1 amplification whereas the lymph node metastasis of tongue SCC was clearly not significant (P=0.593).There was a statistically significant correlation between cyclin D1 positivity and survival rate (P=0.009) for overall SCC cases and (P<0.001) for cheek SCC cases. CONCLUSION The present study found that cyclin D1 amplification may differ in different subsites of OSCC (tongue vs cheek) and its positive amplification implies an overall poor survival in OSCCs, particularly those arising in cheeks.
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Affiliation(s)
- Haydar M Mahdey
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
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Nimura Y, Prithivarajsingh S, Ismail SM, Nairn RS, Tucker SL, Allen PK, Stevens CW. Nucleotide excision repair proteins and their importance for radiation‐enhanced transfection. Int J Radiat Biol 2009; 79:663-9. [PMID: 14555349 DOI: 10.1080/0955300031000150611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE Irradiated cells transfect more efficiently than unirradiated cells because of a radiation-induced increase in plasmid integration. However, the molecular mechanism is unclear. Because of recent observations that nucleotide excision repair (NER) proteins can be involved in certain types of recombination in yeast, it was hypothesized that NER proteins might play a role in this radiation-enhanced integration. MATERIALS AND METHODS Hamster and human cells with inactivating mutations in NER genes were irradiated at doses from 0 to 6 Gy and then immediately transfected with a linearized selectable marker plasmid. Transfection-enhancement ratios (TERs) were calculated as the ratio of the number of drug-resistant colonies in unirradiated cells to the number of transfectants in irradiated cells, corrected for cytotoxicity from radiation. RESULTS Transfection into unirradiated rodent cells was unaffected by NER mutation status. Transfection into unirradiated human cells, however, was increased by NER mutation. The TERs were 5 and 100 for CHO and primary human fibroblasts, respectively, after exposure of the cells to 6 Gy. Mutations in ERCC1, XPA, XPB, XPC, XPF, XPG and CSB dramatically reduced TER. Mutations in ERCC1, XPC, XPF, XPG and CSB suppressed transfection so that the TER was significantly below 1. CONCLUSIONS The mechanism of radiation-enhanced plasmid integration was distinct from that of plasmid integration in unirradiated cells, and NER gene products were critical for enhanced integration to occur.
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Affiliation(s)
- Y Nimura
- Department of Experimental Radiation Oncology, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
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Abstract
PURPOSE To identify the protein components of the DNA end-binding complex in hamster cells. MATERIALS AND METHODS DNA end-binding complexes were identified as follows. Nuclear extracts from Chinese hamster ovary cells (0.5-1.0 microg protein/lane) were incubated with 0.5 ng 32P-labelled probe (144 bp) for 20 min at room temperature in the presence of 1 microg closed circular pUC18 plasmid, a non-specific competitor in a final volume of 20 microl. The electrophoretic mobility of the protein-DNA complexes was analysed by electrophoresis in 5% polyacrylamide gels subjected to autoradiography. Antibodies to various DNA repair-associated proteins were added to the DNA end-binding complex reaction and a supershift identified DNA end-binding complex components. These were confirmed by Western analysis of purified DNA end-binding complex contents. RESULTS Using both supershift and Western analysis, the following proteins were identified in the DNA end-binding complex: Ku70, Ku80, DNA-dependent protein kinase catalytic subunit, DNA ligase IV, X-ray cross complementing protein 4, meiotic recombination protein 11 (Mre11), Werner's syndrome protein, Bloom's syndrome protein, p53, poly(ADP-ribose) polymerase, replication protein A (RPA) 14, and RPA32, ataxia telangiectasia mutant, c-Abl, Rad50, Nijmegen breakage syndrome protein 1 (NBS1), and DNA ligase III were not detected in the binding complex by any assay. Using a combination of electro-elution and autoradiography, it was estimated that the single DNA end-binding complex contains at least 15 proteins whose molecular weights of the DNA end-binding proteins ranged from 620 to 12 kDa. CONCLUSIONS A combination of both a supershift assay and Western analysis of the DNA end-binding complexes has identified 12 of at least 15 proteins present in the DNA end-binding complex of Chinese hamster ovary cells. This protein complex contains Mre11, but not Rad50 or NBS1, suggesting that under some conditions, Mre11 might function independently of Rad50 and NBS1.
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Affiliation(s)
- S M Ismail
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston 77030, USA
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Hamid S, Yang YH, Peng KNL, Ismail SM, Zain RB, Lim KP, Wan Mustafa WM, Abraham MT, Teo SH, Cheong SC. MDM2 SNP309 does not confer an increased risk to oral squamous cell carcinoma but may modulate the age of disease onset. Oral Oncol 2008; 45:496-500. [PMID: 18804411 DOI: 10.1016/j.oraloncology.2008.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Revised: 05/02/2008] [Accepted: 06/24/2008] [Indexed: 12/28/2022]
Abstract
The MDM2 SNP309 has been associated with increased expression of the protein which could suppress p53 function, and has been shown to modulate risk to cancer. We have previously shown that overexpression of MDM2 is a common event in oral cancers. In the present study, we determined the association between the MDM2 SNP309 polymorphism and oral cancer in 207 oral cancer patients and 116 normal subjects. We genotyped the MDM2 SNP309 by PCR-RFLP. Logistic regression was adapted to calculate odds ratios for MDM2 SNP309 polymorphism from univariate and multivariable adjusted models. Our results suggest that MDM2 SNP309 does not confer increased risk to oral cancer (OR=1.55, 95% CI=0.77-3.11). However, the GG/TG genotype was associated with later disease onset in women above 55 years of age. Collectively, our data suggests that MDM2 SNP309 may modulate the risk to oral cancer and is a modifier of the age at oral cancer onset in women above the age of 55 years.
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Affiliation(s)
- Sharifah Hamid
- Oral Cancer Research Team, Cancer Research Initiatives Foundation (CARIF), 2nd Floor Outpatient Centre, Subang Jaya Medical Centre, 47500 Subang Jaya, Selangor, Malaysia
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Hamid S, Lim KP, Zain RB, Ismail SM, Lau SH, Mustafa WMW, Abraham MT, Nam NA, Teo SH, Cheong SC. Establishment and characterization of Asian oral cancer cell lines as in vitro models to study a disease prevalent in Asia. Int J Mol Med 2007; 19:453-60. [PMID: 17273794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
We have established 3 cell lines ORL-48, -115 and -136 from surgically resected specimens obtained from untreated primary human oral squamous cell carcinomas of the oral cavity. The in vitro growth characteristics, epithelial origin, in vitro anchorage independency, human papilloma-virus (HPV) infection, microsatellite instability status, karyotype and the status of various cell cycle regulators and gatekeepers of these cell lines were investigated. All 3 cell lines grew as monolayers with doubling times ranging between 26.4 and 40.8 h and were immortal. Karyotyping confirmed that these cell lines were of human origin with multiple random losses and gains of entire chromosomes and regions of chromosomes. Immunohistochemistry staining of cytokeratins confirmed the epithelial origin of these cell lines, and the low degree of anchorage independency expressed by these cell lines suggests non-transformed phenotypes. Genetic analysis identified mutations in the p53 gene in all cell lines and hypermethylation of p16INK4a in ORL-48 and -136. Analysis of MDM2 and EGFR expression indicated MDM2 overexpression in ORL-48 and EGFR overexpression in ORL-136 in comparison to the protein levels in normal oral keratinocytes. Analysis of the BAT-26 polyadenine repeat sequence and MLH-1 and MSH-2 repair enzymes demonstrated that all 3 cell lines were microsatellite stable. The role of HPV in driving carcinogenesis in these tumours was negated by the absence of HPV. Finally, analysis of the tissues from which these cell lines were derived indicated that the cell lines were genetically representative of the tumours, and, therefore, are useful tools in the understanding of the molecular changes associated with oral cancers.
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Affiliation(s)
- Sharifah Hamid
- Cancer Research Initiatives Foundation (CARIF), 2nd Floor Outpatient Centre, Subang Jaya Medical Centre, 47500 Subang Jaya, Selangor, Malaysia
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Kumar SKS, Zain RB, Ismail SM, Cheong SC. Human telomerase reverse transcriptase expression in oral carcinogenesis--a preliminary report. J Exp Clin Cancer Res 2005; 24:639-46. [PMID: 16471328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Human telomerase reverse transcriptase (hTERT), the catalytic subunit of telomerase, is strongly associated with telomerase activity implicated in cellular immortalization and tumorigenesis. In situ detection of hTERT will aid in determining the localization of telomerase positive cells. The aim of this study was to detect hTERT protein expression in multistep oral carcinogenesis using paraffin embedded tissue samples, and to study the relationship of hTERT expression with different histological stages in oral carcinogenesis. Normal (n = 4), hyperplastic (n = 4), dysplastic (n = 4) and neoplastic (n = 10) oral epithelia representing different histological stages in oral carcinogenesis were included in the study. hTERT protein detection was done by immunohistochemistry (IHC) technique. Nuclear staining intensities were noted and the hTERT-labelling index was determined. Dysplastic and neoplastic oral epithelia showed an increased percentage of hTERT positive cells (Grade 4: > 50% positive staining nuclei) with intense staining in the basal, parabasal and superficial layers of the epithelia, unlike normal oral mucosa which showed intense staining only in the basal and parabasal cell layers, which are the normal proliferative progenitor compartments. hTERT protein expression was elevated with the corresponding advancement of the histological stages of oral carcinogenesis, from normal to hyperplasia to dysplasia to carcinoma. There seems to be an upregulation of hTERT protein expression during the progression of oral cancer, therefore, this may indicate the feasibility of IHC detection of hTERT protein in oral carcinogenesis as a potential diagnostic or prognostic marker.
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Affiliation(s)
- S K S Kumar
- Dept. of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur Malaysia.
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Abstract
Tonsilloliths are very rare concretions found in the tonsillar crypt. They are usually single and unilateral, but occasionally may be multiple or bilateral. Small concretions in the tonsils are common, but well formed giant unilateral or bilateral tonsilloliths are extremely uncommon. Only two cases of bilateral tonsilloliths have so far been reported in the literature. A case of unilateral tonsillolith, mimicking bilateral tonsilloliths taken with the orthopantogram (OPT) in a 57-year-old Malaysian Indian female with squamous cell carcinoma of the oral cavity is described. Although the OPT is a reliable and standard panoramic X-ray unit used in dentistry, superimposition of a lesion involving one side of the jaw creates a pseudo or ghost image on the contralateral side leading to a misdiagnosis of bilateral lesions. This report highlights that tonsilloliths, though rare, should be considered in the differential diagnosis of radiopaque masses involving the mandibular ramus, and that investigations such as CT scan or MRI may be required to differentiate pseudo or ghost images from true bilateral pathologies.
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Affiliation(s)
- Saravanan Ram
- Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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Zainal M, Ismail SM, Ropilah AR, Elias H, Arumugam G, Alias D, Fathilah J, Lim TO, Ding LM, Goh PP. Prevalence of blindness and low vision in Malaysian population: results from the National Eye Survey 1996. Br J Ophthalmol 2002; 86:951-6. [PMID: 12185113 PMCID: PMC1771293 DOI: 10.1136/bjo.86.9.951] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.6] [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] [Accepted: 03/06/2002] [Indexed: 11/03/2022]
Abstract
BACKGROUND A national eye survey was conducted in 1996 to determine the prevalence of blindness and low vision and their major causes among the Malaysian population of all ages. METHODS A stratified two stage cluster sampling design was used to randomly select primary and secondary sampling units. Interviews, visual acuity tests, and eye examinations on all individuals in the sampled households were performed. Estimates were weighted by factors adjusting for selection probability, non-response, and sampling coverage. RESULTS The overall response rate was 69% (that is, living quarters response rate was 72.8% and household response rate was 95.1%). The age adjusted prevalence of bilateral blindness and low vision was 0.29% (95% CI 0.19 to 0.39%), and 2.44% (95% CI 2.18 to 2.69%) respectively. Females had a higher age adjusted prevalence of low vision compared to males. There was no significant difference in the prevalence of bilateral low vision and blindness among the four ethnic groups, and urban and rural residents. Cataract was the leading cause of blindness (39%) followed by retinal diseases (24%). Uncorrected refractive errors (48%) and cataract (36%) were the major causes of low vision. CONCLUSION Malaysia has blindness and visual impairment rates that are comparable with other countries in the South East Asia region. However, cataract and uncorrected refractive errors, though readily treatable, are still the leading causes of blindness, suggesting the need for an evaluation on accessibility and availability of eye care services and barriers to eye care utilisation in the country.
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Affiliation(s)
- M Zainal
- Department of Ophthalmology, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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46
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Prepageran N, Raman R, Ismail SM, Rahman ZAA. Spontaneous sublingual hematoma as a complication of severe hypertension: first report of a case. Ear Nose Throat J 2002; 81:576-8. [PMID: 12199178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
We describe what we believe is the first reported case of a sublingual hematoma secondary to severe hypertension. The patient, a 77-year-old woman, experienced a spontaneous hematoma of the floor of the mouth, tongue, and sublingual space that eventually caused an airway obstruction. We performed an emergency tracheostomy under local anesthesia and then evacuated the hematoma through an incision along the floor of the mouth. The patient recovered uneventfully.
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Affiliation(s)
- Narayanan Prepageran
- Department of Otolaryngology, University of Malaya Medical Center, Kuala Lumpur, 50603 Malaysia.
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47
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Prepageran N, Raman R, Ismail SM, Rahman ZAA. Spontaneous Sublingual Hematoma as a Complication of Severe Hypertension: First Report of a Case. Ear Nose Throat J 2002. [DOI: 10.1177/014556130208100821] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We describe what we believe is the first reported case of a sublingual hematoma secondary to severe hypertension. The patient, a 77-year-old woman, experienced a spontaneous hematoma of the floor of the mouth, tongue, and sublingual space that eventually caused an airway obstruction. We performed an emergency tracheostomy under local anesthesia and then evacuated the hematoma through an incision along the floor of the mouth. The patient recovered uneventfully.
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Affiliation(s)
- Narayanan Prepageran
- Department of Otolaryngology, University of Malaya Medical Center, Kuala Lumpur, Malaysia
| | - Rajagopalan Raman
- Department of Otolaryngology, University of Malaya Medical Center, Kuala Lumpur, Malaysia
| | - Siti Mazlipah Ismail
- Department of Oral Maxillofacial Surgery, University of Malaya Medical Center, Kuala Lumpur, Malaysia
| | - Zainal Ariff Abdul Rahman
- Department of Oral Maxillofacial Surgery, University of Malaya Medical Center, Kuala Lumpur, Malaysia
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49
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Abstract
A 43 year old woman who underwent a hysterectomy and bilateral salpingo-oophorectomy for secondary dysmenorrhoea was found to have bilateral ovarian endometriosis. During the following four years she developed a series of tumour-like vaginal masses, which were locally excised, a pelvic mass causing acute large bowel obstruction, which necessitated an emergency Hartmann's procedure, and a further pelvic mass causing hydronephrosis with a non-functioning kidney. Pathological examination of all the resected specimens showed endometriosis with abundant stromal and glandular elements. Immunoreactivity for p53 protein was detected within endometriotic foci from the initial oophorectomy as well as the latest resection specimens. Immunostaining for p53 may help identify potentially aggressive cases of endometriosis for proactive treatment.
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Affiliation(s)
- S M Ismail
- Department of Pathology, University of Wales College of Medicine, Heath Park, Cardiff CF4 4XN, UK.
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50
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el-Awady MK, el-Hosseiny LA, Ismail SM, Abdel-Aziz MT, el-Demellawy MA. Comparison between Toxoplasma gondii DNA and specific immunoglobulins during pregnancy. East Mediterr Health J 2000; 6:888-97. [PMID: 12197346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
Early diagnosis of toxoplasmosis in pregnant women can be of great help in early intervention and prevention of congenital disorders that usually lead to fetal death. The purpose of the present study was to evaluate nested PCR amplification of the B1 gene of Toxoplasma gondii before and after treatment and in comparison to serological follow-up during treatment. The efficiency of treatment on the bases of PCR detection of T. gondii DNA was statistically significant, while it was insignificant when anti-toxoplasma specific IgM and IgG antibodies were used. PCR detection of T. gondii DNA when performed on whole blood is a rapid, sensitive and specific diagnostic procedure and is a valuable tool for establishing the diagnosis of T. gondii infection in women before or during pregnancy.
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Affiliation(s)
- M K el-Awady
- Department of Human Genetics, National Research Centre, Department of Biochemistry, Faculty of Medicine, University of Cairo, Cairo, Egypt
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