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Oral precancerous conditions frequency in 1648 Malaysians with correlation to oral habits

Ramanathan K, Keat TC, Retnanesan A, Canaganayagam A

Dent J Malaysia Singapore, 1973 May;13(1):11-21.
PMID: 4521124
Matched MeSH terms: Precancerous Conditions/etiology
Risk of the contralateral mucosa in patients with oral potentially malignant disorders

Siar CH, Mah MC, Gill PP

Asian Pac J Cancer Prev, 2011;12(3):631-5.
PMID: 21627356

BACKGROUND: It is known that abnormal changes may occur in any part of the oral mucous membrane exposed to a carcinogen. Therefore patients with oral potentially malignant disorders (PMDs) are at risk of developing similar lesions at multiple sites.
OBJECTIVES: To determine the risk of the contralateral mucosa in patients presenting with oral PMDs.
MATERIALS AND METHODS: Sixty individuals with PMDs were selected for this study. These comprised 32 (53.3%) Indians, 23 (38.3%) Chinese, four (6.7%) Malays and one (1.7%) Nepalese. All selected cases had histopathological confirmation of their primary existing lesion as inclusion criteria. Cases that subsequently presented with a lesion in the corresponding anatomical site also underwent scalpel incisional biopsy on this second lesion to verify its diagnosis. The remaining cases that presented with unilateral PMDs at the time of study were subjected to a cytobrush biopsy on the normal looking contralateral mucosa.
RESULTS: A total of 70 primary PMDs were detected in 60 patients. The most common PMD found was oral lichen planus (n=40, 57.1%). Of the 60 patients studied, 28 (46.6%) exhibited bilateral lesions either synchronously (n=21, 35.0%) or metachronously (n=7, 11.6%). The remaining cases that had undergone cytobrush biopsy on the corresponding anatomical site yielded normal cytological results.
CONCLUSIONS: Present findings demonstrated that patients presenting with PMDs in the upper aerodigestive tract are at a greater risk of developing a second lesion most probably in the contralateral anatomical site.

Matched MeSH terms: Precancerous Conditions/etiology
Fulltext Population burden of betel quid abuse and its relation to oral premalignant disorders in South, Southeast, and East Asia: an Asian Betel-quid Consortium Study

Lee CH, Ko AM, Warnakulasuriya S, Ling TY, Sunarjo, Rajapakse PS, et al.

Am J Public Health, 2012 Mar;102(3):e17-24.
PMID: 22390524 DOI: 10.2105/AJPH.2011.300521

We investigated the population burden of betel quid abuse and its related impact on oral premalignant disorders (OPDs) in South, Southeast, and East Asia.

Matched MeSH terms: Precancerous Conditions/etiology*
Fulltext The association of Streptococcus bovis/gallolyticus with colorectal tumors: the nature and the underlying mechanisms of its etiological role

Abdulamir AS, Hafidh RR, Abu Bakar F

J Exp Clin Cancer Res, 2011;30:11.
PMID: 21247505 DOI: 10.1186/1756-9966-30-11

Streptococcus bovis (S. bovis) bacteria are associated with colorectal cancer and adenoma. S. bovis is currently named S. gallolyticus. 25 to 80% of patients with S. bovis/gallolyticus bacteremia have concomitant colorectal tumors. Colonic neoplasia may arise years after the presentation of bacteremia or infectious endocarditis of S. bovis/gallolyticus. The presence of S. bovis/gallolyticus bacteremia and/or endocarditis is also related to the presence of villous or tubular-villous adenomas in the large intestine. In addition, serological relationship of S. gallolyticus with colorectal tumors and direct colonization of S. gallolyticus in tissues of colorectal tumors were found. However, this association is still under controversy and has long been underestimated. Moreover, the etiological versus non-etiological nature of this associationis not settled yet. Therefore, by covering the most of up to date studies, this review attempts to clarify the nature and the core of S. bovis/gallolyicus association with colorectal tumors and analyze the possible underlying mechanisms.

Matched MeSH terms: Precancerous Conditions/etiology
Oral mucosal lesions in non oral habit diabetic patients and association of diabetes mellitus with oral precancerous lesions

Saini R, Al-Maweri SA, Saini D, Ismail NM, Ismail AR

Diabetes Res Clin Pract, 2010 Sep;89(3):320-6.
PMID: 20488573 DOI: 10.1016/j.diabres.2010.04.016

AIMS: This study was aimed to determine the prevalence of oral mucosal lesions (OML) in patients with diabetes mellitus (DM) and non-diabetic subjects without any oral habits and to investigate the association of DM with oral precancerous lesions.
METHODS: This cross-sectional study involved 420 diabetic and 420 non-diabetic control subjects without any oral habits. Detailed oral examination was performed based on international criteria.
RESULTS: A significantly greater proportion of subjects with DM (45%) had one or more OML in comparison to non-diabetics (38.3%). Patients with DM showed a significantly greater prevalence of geographic tongue, denture stomatitis and angular cheilitis than non-diabetics (p<0.05). The results also showed an association between occurrence of one or more OML and metabolic control of diabetic patients (p<0.05). For precancerous lesions, lichen planus was found in two diabetic patients while none of controls had any precancerous lesion (p>0.05).
CONCLUSIONS: Prevalence of OML was significantly higher in diabetic patients than non-diabetics and this prevalence was associated with the metabolic control of the patients. However, no association was observed between DM and oral precancerous lesions.

Matched MeSH terms: Precancerous Conditions/etiology
Frequency of oral precancerous conditions in 407 Malaysians--with correlation to oral habits

Ramanathan K, Canaganayagam A, Keat TC, Retnanesan A

Med J Malaysia, 1973 Mar;27(3):173-81.
PMID: 4268919
Matched MeSH terms: Precancerous Conditions/etiology
Aberrant proteins featured in the saliva of habitual betel quid chewers: an indication of early oral premalignancy?

Jessie K, Jayapalan JJ, Rahim ZH, Hashim OH

Electrophoresis, 2014 Dec;35(24):3504-11.
PMID: 25223738 DOI: 10.1002/elps.201400252

Prolonged chewing of betel quid is known to cause oral diseases, including cancer. The present study was performed to screen for aberrant proteins in the saliva of habitual betel quid chewers compared to nonchewers. Saliva of female subjects (n = 10) who had been chewing betel quid for more than 20 years and nonbetel quid chewers (n = 10) of the same gender and range of age was analyzed by gel-based proteomics. Increased structural microheterogeneity of saliva haptoglobin beta chains indicated by shifts of focused spots similar to that earlier reported in patients with oral squamous cell carcinoma, and their relatively higher abundance compared to nonbetel quid chewers, were detected in saliva protein profiles of all chewers. In addition, the majority of the betel quid chewers also showed significant higher abundance of hemopexin, alpha-1B glycoprotein, alpha1-antitrypsin, complement C3, and transthyretin. These proteins had previously been associated with several different cancers. Our data demonstrated different forms of protein aberration in the saliva of betel quid chewers, which may be indicative of early oral precancerous conditions.

Matched MeSH terms: Precancerous Conditions/etiology*
Cultural and dietary risk factors of oral cancer and precancer--a brief overview

Zain RB

Oral Oncol, 2001 Apr;37(3):205-10.
PMID: 11287272

This is an update on cultural and dietary risk factors for oral precancer and cancer. It is an overview on ethnic differences (where possible) and socio-cultural risk factors (tobacco/areca nut/betel quid, alcohol use and dietary factors) in relation to oral precancer and cancer. While studies were from Western countries, India and China, this update also attempts to include and highlight some studies conducted in the Asia-Pacific region.

Matched MeSH terms: Precancerous Conditions/etiology*
Oral mucosal lesions associated with betel quid, areca nut and tobacco chewing habits: consensus from a workshop held in Kuala Lumpur, Malaysia, November 25-27, 1996

Zain RB, Ikeda N, Gupta PC, Warnakulasuriya S, van Wyk CW, Shrestha P, et al.

J Oral Pathol Med, 1999 Jan;28(1):1-4.
PMID: 9890449

A variety of betel/areca nut/tobacco habits have been reviewed and categorized because of their possible causal association with oral cancer and various oral precancerous lesions and conditions, and on account of their widespread occurrence in different parts of the world. At a recent workshop in Kuala Lumpur it was recommended that "quid" be defined as "a substance, or mixture of substances, placed in the mouth or chewed and remaining in contact with the mucosa, usually containing one or both of the two basic ingredients, tobacco and/or areca nut, in raw or any manufactured or processed form." Clear delineations on contents of the quid (areca nut quid, tobacco quid, and tobacco and areca nut quid) are recommended as absolute criteria with finer subdivisions to be added if necessary. The betel quid refers to any quid wrapped in betel leaf and is therefore a specific variety of quid. The workshop proposed that quid-related lesions should be categorized conceptually into two categories: first, those that are diffusely outlined and second, those localized at the site where a quid is regularly placed. Additional or expanded criteria and guidelines were proposed to define, describe or identify lesions such as chewer's mucosa, areca nut chewer's lesion, oral submucous fibrosis and other quid-related lesions. A new clinical entity, betel-quid lichenoid lesion, was also proposed to describe an oral lichen planus-like lesion associated with the betel quid habit.

Matched MeSH terms: Precancerous Conditions/etiology