Carcinogenesis
Mostrando 25-36 de 854 artigos, teses e dissertações.
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25. Hydrolyzed collagen interferes with in vitro photoprotective effectiveness of sunscreens
ABSTRACT The chronological skin aging is a progressive and natural process with genetic and physiological changes. However, ultraviolet (UV) radiation may accelerate the oxidative stress, generating carcinogenesis and photoaging. Natural compounds and their applications are considered a trend in the cosmetic market. The protein-based film-forming compounds p
Braz. J. Pharm. Sci.. Publicado em: 22/06/2017
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26. High prevalence of human papillomavirus (HPV) in oral mucosal lesions of patients at the Ambulatory of Oral Diagnosis of the Federal University of Sergipe, Northeastern Brazil
Abstract The role of human papillomavirus (HPV) in oral carcinogenesis is still controversial as detection rates of the virus in oral cavity reported in the literature varies greatly. Objective The aim of this study was to evaluate the frequency of HPV infection and its genotypes in patients with oral lesions at the Ambulatory of Oral Diagnosis of the Fede
J. Appl. Oral Sci.. Publicado em: 2017-02
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27. Immunohistochemical analysis of FoxP3+ regulatory T cells in lower lip squamous cell carcinomas
Abstract: The aim of this study was to determine the number of FoxP3+ regulatory T (Treg) cells in the microenvironment of lower lip squamous cell carcinomas (LLSCCs) and to correlate the findings with clinicopathological parameters (tumor size/extent, regional lymph node metastasis, clinical stage, and histopathological grade of malignancy). Fifty cases of
Braz. oral res.. Publicado em: 22/12/2016
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28. Carcinogenesis in rats subjected to a new model ureterosigmoidostomy and treated with L-lysine
ABSTRACT PURPOSE: To evaluate the effects of L-lysine on the intestinal and urothelial epithelium of rats subjected to ureterosigmoidostomy (new model for surgical carcinogenesis). METHODS: Forty-two rats, 9 weeks of age, were divided into 6 groups. Animals in groups A, B, C were subjected to ureterosigmoidostomy (US) and treated with L-lysine, celecoxib a
Acta Cir. Bras.. Publicado em: 2016-12
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29. The Complex Link between Apoptosis and Autophagy: a Promising New Role for RB
ABSTRACT Physiological processes, as autophagy, proliferation and apoptosis are affected during carcinogenesis. Restoring cellular sensitivity to apoptotic stimuli, such as the antineoplastic cocktails, has been explored as a strategy to eliminate cancer cells. Autophagy, a physiological process of recycling organelles and macromolecules can be deviated from
An. Acad. Bras. Ciênc.. Publicado em: 2016-12
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30. Immunohistochemical angiogenic biomarkers in hepatocellular carcinoma and cirrhosis: correlation with pathological features
OBJECTIVE To investigate immunohistochemical markers of angiogenesis and their association with pathological prognostic features in hepatocellular carcinoma and cirrhotic liver. METHODS Vascular endothelial growth factor, CD105, and cyclooxygenase-2 were immunohistochemically detected in 52 hepatocellular carcinoma tissue samples and 48 cirrhotic liver tis
Clinics. Publicado em: 2016-11
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31. Renal Cell Carcinoma and Visceral Adipose Index: a new risk parameter
ABSTRACT Purpose: The aim of this study was to evaluate the relationship between tumor size and grade with visceral adipose index (VAI) levels in patients with renal cell carcinoma. Materials and methods: We retrospectively reviewed the records of 310 consecutive patients with RCC who underwent radical nephrectomy at our institution between January 2007 an
Int. braz j urol.. Publicado em: 2016-10
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32. Tumor-associated macrophages (TAMs): clinical-pathological parameters in squamous cell carcinomas of the lower lip
Abstract The objective of this study was to analyze the presence of tumor-associated macrophage (TAM) subpopulations M1 and M2 in squamous cell carcinoma of the lower lip (SCCLL) by immunohistochemitry, and to evaluate the possible role of these subtypes in the development of regional lymph node metastasis and their association with clinical and pathological
Braz. oral res.. Publicado em: 22/08/2016
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33. Immunoexpression of cleaved caspase-3 shows lower apoptotic area indices in lip carcinomas than in intraoral cancer
ABSTRACT Objective This study aimed to evaluate apoptosis by assessing cleaved caspase-3 immunoexpression in hyperplastic, potentially malignant disorder (PMD), and malignant tumors in intraoral and lower lip sites. Material and Methods A retrospective study using paraffin blocks with tissues from patients with inflammatory fibrous hyperplasia (IFH), act
J. Appl. Oral Sci.. Publicado em: 2016-08
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34. Fontes, formação, reatividade e determinação de quinonas na atmosfera
Quinones are a group of semi-volatile organic substances, ubiquitous in nature, belonging to the class of oxygenated polycyclic aromatic hydrocarbons (Oxygenated PAH). These compounds are formed in biogenic processes, through the oxidative metabolism of endogenous compounds, such as catecholamines, estrogen hormones and xenobiotics, as well as directly emitt
Quím. Nova. Publicado em: 2016-05
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35. Lack of detection of human papillomavirus DNA in prostate carcinomas in patients from northeastern Brazil
Abstract Prostate cancer is the second most common cancer among men in western populations, and despite its high mortality, its etiology remains unknown. Inflammatory processes are related to the etiology of various types of tumors, and prostate inflammation, in particular, has been associated with prostate cancer carcinogenesis and progression. Human papill
Genet. Mol. Biol.. Publicado em: 2016-03
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36. Association of human papillomavirus and Chlamydia trachomatis with intraepithelial alterations in cervix samples
The influence of different infectious agents and their association with human papillomavirus (HPV) in cervical carcinogenesis have not been completely elucidated. This study describes the association between cytological changes in cervical epithelium and the detection of the most relevant aetiological agents of sexually transmitted diseases. Samples collecte
Mem. Inst. Oswaldo Cruz. Publicado em: 02/02/2016