scholarly journals Assessment of Cytological Atypia, AgNOR and Nuclear Area in Epithelial Cells of Normal Oral Mucosa Exposed to Toombak and Smoking

Rare Tumors ◽  
2009 ◽  
Vol 1 (1) ◽  
pp. 28-30 ◽  
Author(s):  
Hussain Gadelkarim Ahmed ◽  
Abd-Elraheem Ali Babiker

The purpose of this study was to assess cellular proliferative activity of clinically healthy oral mucosal epithelial cells of toombak dippers and smokers by means of AgNOR counts and nuclear areas via nuclear morphometry. Smears were collected from normal-appearing mouth floor mucosa and tongue of 75 toombak dippers, 75 smokers and 50 non-tobacco users between the ages of 20 and 70 with a mean age of 36 years. AgNORs were counted in the first 50 well-fixed, nucleated squamous cells and nuclear areas were calculated via microscopic stage micrometer. Cytological atypia was ascertained in 6 tobacco users and could not be ascertained in non-tobacco users. Statistically mean AgNOR numbers per nucleus in the non-tobacco users (2.45±0.30) was lower than the toombak dippers (3.081±0.39, p<0.004), and the smokers (2.715±0.39, p<0.02), and mean nuclear areas of epithelial cells of toombak dippers (6.081±0.39, p<0.009) and smokers (5.68±10.08, p<0.01) was also significantly higher than non-smokers (5.39±9.4). The mean number of nuclei having more than 3 AgNORs was 28%, 19% and 7% in toombak dippers, smokers and non-tobacco users, respectively. These findings support the view that toombak dipping and smoking are severe risk factors for oral mucosal proliferative lesions and exfoliative cytology is valid for screening of oral mucosal lesions.

2020 ◽  
Vol 14 (1) ◽  
pp. 34-39
Author(s):  
Parvin Parvaei ◽  
Afsaneh Dorri-giv ◽  
Gholamreza Sharifzadeh ◽  
Hakimeh Malakimoghadam ◽  
Elham Atabati

Introduction: Rheumatoid Arthritis (RA) may cause malfunction in the immune system and the inability to observe oral hygiene in patients due to physical deficits. A bacterial infection caused as such can constitute a significant risk factor for the development of systemic infection. The present study aimed to investigate the oral mucosal lesions, the DMFT index, and the Modified Gingival Index (MGI) in RA patients treated in Birjand city. Materials and Methods: This descriptive cross-sectional study was performed with 80 RA patients referred to rheumatology clinics of Birjand in 2018. Data were collected through observation, clinical examination, information forms, and medical records. After the patients were informed about the research purposes and signed consent forms for participation, they were examined at the rheumatology clinics. The collected data were analyzed in SPSS software (version 19). Results: Of the 80 patients, n = 64 (80%) had oral mucosal lesions. Dry mouth (66.3%) was the most common finding. The mean DMFT index score was 18.7. Conclusion: Oral mucosal lesions and the mean DMFT index score seem to be at high levels in RA patients, possibly due to the complications of the disease or the consumed medications.


Background and Aims: The use of methods with minimal complications and risk is of utmost importance in the promotion of oral hygiene in the care of intensive care unit (ICU) patients. The present study aimed to compare the effect of chamomile mouthwash and chlorhexidine gluconate on dental plaque and oral mucosal lesions of patients under ventilator in the intensive care unit. Materials and Methods: This randomized controlled clinical trial was conducted on 50 eligible patients who were selected via available sampling method from among trauma patients in the ICU of Imam Reza (AS) Hospital in Birjand. They were assigned to two groups of chamomile extract 10% (n=25) and chlorhexidine gluconate 0.2% (n=25) by block randomization. In each group, the solution was used three times a day every 8 hours for 5 days. The instruments were the Backas Assessment Checklist (BOAS) and the Mucosal Plate (MPS). Results: In both groups, the mean total score of oral mucosal lesions and dental plaque significantly decreased 2 and 5 days after the intervention, compared to the pre-intervention (P<0.001); nonetheless, the two groups were not significantly different in this regard (P>0.05). Furthermore, there was no statistically significant difference in the mean changes in the total scores of oral mucosal lesions and dental plaque at different times in the two groups (P>0.05). Conclusion: Chamomile mouthwash and chlorhexidine mouthwash have similar beneficial effects on dental plaque and oral mucosal lesions of ventilated patients admitted to the ICU.


Author(s):  
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Background: Liver cirrhosis is an ultimate complication of all chronic liver diseases. The oral cavity especially the periodontium is affected by malnutrition, coagulation disorders, immunodeficiency which are some of the main features present in patients with liver cirrhosis. The aim of this study was to determine the prevalence and determinants of oral pathologies in patients with decompensated liver cirrhosis in two hospitals of Yaoundé Cameroon. Patients and Methods: This was a cross-sectional and analytical study comparing the oral health status of decompensated liver cirrhotic patients in Yaoundé with sex and age (±3 years) matched healthy controls from the same area. We enrolled patients with liver cirrhosis (Child Pugh score greater than or equal to 7) and their corresponding healthy controls. For each participant, socio-demographic data, clinical data on liver cirrhosis and on oral examination were collected. Oral examination evaluated the level of oral hygiene, gingival index (GI), probing depth (PD) and Clinical attachment loss (CAL), determined and identified oral mucosal lesions. The mean Decayed-Missing-Filled-Teeth (DMFT) index and prevalence of dental caries were also determined. The groups were then compared with regards to periodontal oral mucosal and dental variables using chi square test and Mantel – Haenszel odds ratio was used to determine the strength of association between decompensated liver cirrhosis and oral pathologies. The student‘s T-test was used to compare mean values of quantitative variables. A p-value ˂ 0.05 was statistically significant. Results: We included a total of 80 participants among which 40 liver cirrhotic patients and 40 sex and age (±3 years) matched controls. The mean age was 50.0(±19.0) years for the cases and 52.4(±17.9) years for the healthy controls. Hepatitis B virus (HBV) and Hepatitis C virus (HCV) were the main aetiology of liver cirrhosis representing 42.5% and 30% respectively and Child Pugh class B (65% of cases) was the most represented stage of the disease. A number of past bucco-dental consultations was significantly less frequent in the cases than the controls (09 versus 18, p = 0.03). Over 80% of cases used an inappropriate brushing technique compared to 60% of controls and 55% of cases used toothbrushes and toothpaste compared to 85% controls (p=0.09). A frequency of brushing at least twice daily was 42.5% in cases compared to 55% in controls (p=0.19). Patients with decompensated liver cirrhosis had a significantly greater prevalence of periodontal disease than the controls (95% versus 77.5%, p = 0.013). In addition, they had greater mean PI (1.8(±0.7) versus 1.6(±0.5), p = 0.182), mean GI index (1.9(±0.8) versus 1.3(±0.64), p = 0.004) and periodontal recession (77.5% versus 47.5%). Oral mucosal lesions and salivary lesions were more frequent in cirrhotic patients than in the healthy controls. These lesions include xerostomia (45% versus 17.5%, p ˂0.001), oral candidiasis (7.5% versus 0%, p = 0.120), lichen planus (17.5% versus 2.5%, p = 0.028), petechiae (57.5% versus 5%, p ˂ 0.001), halitosis (50% versus 7.5%, p ˂0.001) and sialadenitis (17.5% versus 0%, p = 0.006). Higher prevalence’s of dental and mean DMFT index were found in cases than in controls. Factors associated with the development of oral pathologies in decompensated cirrhotic patients were oral consultations (p = 0.046), presence of cytolysis (OR = 2.58, p = 0.042) and inadequate brushing technique (p = 0.004). Conclusion: The prevalence of oral pathologies is higher in patients with decompensated liver cirrhosis than corresponding age-sex matched healthy controls.


2009 ◽  
Vol 13 (4) ◽  
pp. 119-126
Author(s):  
Yoshimitsu Bamba ◽  
Tetsunari Nishikawa ◽  
Akio Tanaka

1987 ◽  
Vol 7 (11) ◽  
pp. 4017-4023 ◽  
Author(s):  
H L Smits ◽  
E E Floyd ◽  
A M Jetten

A cDNA library was constructed from polyadenylated RNA present in squamous differentiated rabbit tracheal epithelial cells. Screening of the cDNA library was aimed at identifying RNAs that were abundant in squamous cells and expressed at low levels in undifferentiated cells. Two different recombinants were obtained containing inserts, 0.86 and 0.77 kilobases (kb) in size, that hybridized to mRNAs 1.0 and 1.25 kb in length. These RNAs were present at approximately 50-fold higher levels in squamous cells than in proliferative or confluent retinoic acid-treated cells. The increase in the levels of the 1.0- and 1.25-kb RNAs correlated closely with the onset of squamous differentiation and was not related to induction of terminal cell division. Treatment of rabbit tracheal epithelial cells with transforming growth factor beta, which induces squamous differentiation in these cells, also resulted in elevated levels of the 1.0- and 1.25-kb RNAs. The increased levels of these RNAs in squamous cells appeared to a large extent to be regulated at a posttranscriptional level. Retinoic acid not only inhibited the increase in the levels of the 1.0- and 1.25-kb RNAs but also reversed the expression of these RNAs in squamous cells. These results suggest that retinoic acid affects, directly or indirectly, molecular events that induce alterations in the posttranscriptional processing of the transcripts corresponding to the 1.0- and 1.25-kb RNAs.


2011 ◽  
Vol 145 (2_suppl) ◽  
pp. P146-P146
Author(s):  
Paul Seltzer ◽  
Ronald K. Loewenstein ◽  
Deborah J. Carroll ◽  
R. Bruce Buechler

2021 ◽  
pp. jclinpath-2021-207570
Author(s):  
Hans Blaauwgeers ◽  
Birgit I Lissenberg-Witte ◽  
Chris Dickhoff ◽  
Sylvia Duin ◽  
Erik Thunnissen

AimsThe aim of this study was to determine the relationship between proliferative activity, PD-L1 status and nuclear size changes after preoperative chemoradiotherapy (CRT) and the clinical outcome in patients with superior sulcus tumours.MethodsProliferative activity (MIB-1) and PD-L1 status were estimated by immunohistochemistry in the tumour cells of resection specimen in a series of 33 patients with residual tumour after trimodality therapy for a sulcus superior tumour between 2005 and 2014. A morphometric analysis of both pretreatment and post-treatment tumour materials was also performed. Results were related to disease-free survival and overall survival.ResultsLow proliferative activity (<20% MIB-1) was associated with better overall survival: 2-year overall survival of 73% compared with 43% and 25%, respectively, for moderate (MIB-1 20%–50%) and high (MIB-1 >50%) proliferative activity (p=0.016). A negative PD-L1 status (<1% positive tumour cells) was also associated with better overall survival (p=0.021). The mean nuclear size of normal lung tissue pneumocytes was significantly smaller compared with the mean nuclear size of tumour cells of the resection specimens (median difference −38.1; range −115.2 to 16.0; p<0.001). The mean nuclear size of tumour cells did not differ between pretreatment biopsies and resection specimens (median difference −4.6; range −75.2 to 86.7; p=0.14). Nuclear size was not associated with survival (p=0.82).ConclusionsLow proliferative activity determined by MIB-1 as well as a negative PD-L1 expression are significantly associated with better overall survival in patients with residual tumour after CRT for superior sulcus tumour.


2013 ◽  
Vol 55 (2) ◽  
pp. 157-160 ◽  
Author(s):  
Pragati B. Hebbar ◽  
Anuradha Pai ◽  
Sujatha D

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