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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Asian Pacific Journal of Cancer Prevention
- نوع مقاله: Journal Article
- کلمات کلیدی: Raman spectroscopy,Carnoy’s Solution,Oral Surgery
- چکیده:
- چکیده انگلیسی: Background: There are several lesions of odontogenic and non-odontogenic origin in the oral cavity, such as odontogenic keratocyst, as well as many treatment options for such lesions. In order to reduce recurrence due to conservative treatments and less aesthetic and functional impairment of the patient (radical therapies), Carnoy’s solution has been used as an adjuvant to surgery, showing satisfactory results. Its application is not standardized, presenting risks to adjacent tissues. Thus, we characterized the Carnoy’s solution with different viscosity agents to enhance its applicability. Material and Methods: All solutions prepared (Carnoy with and without chloroform) were added with viscosity agent: ethyl cellulose, propylene glycol, and glycerol totaling eight solutions. The pharmacological characterization of the solutions was performed by determining the mass density and relative density (using a clean and dry pycnometer), pH (using pH meter), and concentration of Fe3+ (using ultraviolet/visible spectroscopy). The analyses of the inorganic components were determined by Raman micro spectrometry. Data were analyzed with statistical program BIOESTAT 5.3. Results: Solutions with ethyl cellulose were discarded due to precipitate formation and suspension of the viscosity agent. In the other solutions, viscosity increase (propylene glycol solutions) and acidic pH were observed mainly in the glycerol group. The ferric chloride characterized as a hemostatic agent had its concentration increased with the use of thickening agents, theoretically favoring its action. Conclusion: The similarity of the propylene glycol and glycerol molecules justifies the Raman spectra of these substances to be similar and the difficulty in obtaining a “fingerprint”.
- انتشار مقاله: 17-10-1397
- نویسندگان: Francisco Samuel Rodrigues Carvalho,Marina Mota Lima Verde,Khalil Fernandes Viana,Thâmara Manoela Marinho Bezerra,Said Gonçalves Da Cruz Fonseca,Karuza Maria Alves Pereira,Thyciana Rodrigues Ribeiro,Fábio Wildson Gurgel Costa
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Pacific Journal of Cancer Prevention
- نوع مقاله: Journal Article
- کلمات کلیدی: immunohistochemistry,oral squamous cell carcinoma,oral epithelial dysplasia,GLUT proteins
- چکیده:
- چکیده انگلیسی: Objectives: To evaluate immunohistochemically the expression of GLUT-3 and GLUT-4 in oral epithelial dysplasia
(OED) and the oral squamous cell carcinoma (OSCC) and assess possible involvement in the malignant transformation of
oral lesions. Methods: Tissue samples of 15 cases of OSCC and 15 of OED were subjected to immunohistochemistry
with anti-GLUT-3 and anti-GLUT-4 antibodies. Five fields of each case were analyzed, to provide percentages of
positive cells at 400X magnification. Result: GLUT-3 and GLUT-4 were positive in 100% of the analyzed samples,
the percentage immunolabeling for GLUT-3 ranging from 19% to 73% in the OED group and 10% to 89% in the OSCC
group. Positive immunolabeling for GLUT-4 ranged from 15.2% to 79.9% in the OSCC group and 27.1% to 92.6% in
the OED group. Statistical analysis with the Mann-Whitney test revealed that there was a higher expression of GLUT-4 in
the OED group than in the OSCC group (p=0.04) without any significant difference in the GLUT-3 expression (p=0.852).
Conclusion: GLUT-4 expression may indicate some role in oncogenic mechanisms which can determine a malignant
phenotype. Thus, it is suggested that further studies on the role of GLUT-3 in oral carcinogenesis be conducted.- انتشار مقاله: 04-04-1396
- نویسندگان: Sthefane Gomes Feitosa,Khalil Fernandes Viana,Ealber Carvalho Macedo Luna,Fábio Wildson Gurgel Costa,Roberta Barroso Cavalcante,Filipe Nobre Chaves,Hellíada Vasconcelos Chaves,Karuza Maria Alves Pereira
- مشاهده