Cellular Changes in Buccal Mucosa from Farmers Exposed to Glyphosate / Alterações Celulares na Mucosa Bucal de Agricultores Expostos ao Glifosato

This study evaluated the sociodemographic characteristics and behavior of the oral mucosa epithelium exposured to the herbicide glyphosate of family farmers in Cerro Largo, RS, Brazil. 120 individuals were selected for social data collection through interviews. According to the results, most of the interviewees uses glyphosate between 5-10 years, being exposed between 30 minutes to one hour each application and applying the herbicide 1-2 times a year. After the interview, we selected the subjects to the Micronucleus (MN) test. For this test, oral smears were performed in three distinct regions (cheek, mouth floor and tongue edges) of 10 test subjects (exposed to glyphosate, non-smoker and non-alcoholic) and 10 control subjects. Results showed that glyphosate exposure increased the frequency of MN in the test group (p = 0.0002), as well as the frequency of other cellular alterations, such as brokenegg (p = 0.001), binucleation (p = 0.0001) and karyolysis (p = 0.0004). Based on these findings, the extent use of glyphosate may be causing damage to the oral mucosa epithelium and this might respond adaptively through cellular modifications.

Severe Inflammation Indicates High Risk of HSIL: from a Cross-Sectional Study

Inflammation has been reported as a facilitator in cervical oncogenesis, but the correlation between inflammation and cytology abnormality including Cervical Intraepithelial Neoplasia (CIN) remains uncertain. The aim of this study was to investigate the correlation between them with ThinPrep cytological test (TCT) as a screening tool for cervical cancer and CIN, which can identify abnormal morphology of cervical mucosa epithelium and inflammation degrees. A retrospective analysis of clinical data from 48101 women undergoing TCT in the affiliated hospitals of Sun Yat-Sen University (SYSU) revealed that among the 8.87% (4102 cases) total positive rate of ASC, LSIL and HSIL, 67.7% (2777/4102) of TCT positive samples had inflammatory infection. The rate of severe inflammation was significantly higher in cytological abnormality group than the control group (15.1% vs. 2%, P=0.000). Our results showed that severe inflammation significantly increased incidence of cytological abnormality by 12.59 times and elevated the risk of HSIL by 756.47 times. In conclusion, severe inflammation increased the risk of cytological abnormality, and should be viewed as an important risk of HISL. These results of our study remind clinicians to be more watchful for women with severe cervical inflammation in TCT reports for earlier prevention of the HSIL.

Case series of cultivated oral mucosa epithelium transplantation for limbal stem cell failure

Purpose: To report a case series of seven eyes (six patients) with severe limbal stem cell failure who underwent cultivated oral mucosa epithelium transplantation (COMET) in preparation for corneal transplant surgery and assess the change in visual acuity postoperatively. Design: Case series. Methods: A retrospective analysis of an interventional case series of six patients with severe limbal stem cell deficiency who underwent COMET between 2012 and 2015 was performed. Six eyes had COMET followed by corneal transplant, and one eye had corneal transplant preceding COMET. The change in the visual acuity after operation was evaluated. Results: A total of six patients with seven eyes were studied. All of them had severe ocular surface disease with limbal stem cell deficiency (LSCD) secondary to chemical injury (five eyes), SJS (one eye), and severe ocular rosacea (one eye). Four eyes had improvements in visual acuity, two of which achieved best corrected visual acuity (BCVA) of 6/12. Conclusion: The use of COMET helps to optimize the ocular surface in severe LSCD for further corneal transplant surgeries. It has helped to improve the graft uptake and subsequent visual improvement, especially in chronic chemical burn cases.

THE EFFECTS OF BANANA STEM (Musa paradisiaca var. sapientum) EXTRACT ON HISTOPATHOLOGIC GASTRIC OF RATS INDUCED BY INDOMETACHIN

This research aims to find out the administration effect of Ambon banana stem extract (Musa paradisiaca var. sapientum) to prevent gastric damage and observe histopathology of rat’s gastric induced by indomethacin. This research used 30 male rats age 8-12 week having 150 gram weight. They were selected randomly and divided into five groups. Negative control (K-) was given 0.5 ml CMC Na 0.5 % for 9 days and 0.5 ml corn oil was given on 10th. Positive control (K+) was given 0.5 ml CMC Na 0.5% for 9 days and then given Indomethacin emultion 5 mg/0.5 ml/150 g BW once on 10th day, and the other groups were given Ambon banana stem extract for (P1) 20 mg/150 g BW, (P2) 40 mg/150 g BW and (P3) 80 mg/150 g BW for 9 days. Afterwards, they were given Indometachin emultion 5 mg/150 g BW once on 10th day. Each gastric specimen was processed and histopathological changes were observed. Scoring of mucosa epithelium erosion and hemorrhagic, as qualitative data, was analyzed by Kruskall-Wallis test and continued by using Z test. The result shows that Pisang Ambon’s stem extract reduce significantly in gastric mucosa epithelium erosion and hemorrhagic induced by Indomethacin (p<0.05).