Publications by authors named "Flavia Castello Branco Vidal"

Penile cancer has an incidence strongly linked to sociocultural factors, being more common in underdeveloped countries like Brazil, where it represents approximately 2% of cancers affecting men. This dataset was created to address the scarcity of publicly available resources for classifying histopathological images in penile cancer research. The images were collected in 2021 from tissue samples obtained through biopsies of patients undergoing treatment for penile cancer.

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: Antifungal resistance to azoles, coupled with the increasing prevalence of infections, represents a significant public health challenge and has driven the search for new natural compounds that can act as alternatives or adjuvants to the current antifungals. Ellagic acid (EA) has demonstrated antifungal activity; however, its effects are not fully understood. In this study, we investigated the in vitro anti- activity of EA and its ability to potentiate the effects of fluconazole (FLZ) on : The Minimum Inhibitory Concentration (MIC) of EA was determined by broth microdilution and its interaction with FLZ was assessed using a checkerboard assay.

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Objective: MicroRNAs are small non-coding RNAs that are abundantly expressed in various biofluids, making them promising candidates for cancer biomarkers. This review aims to present current evidence on the use of miRNA as biomarkers for the non-invasive diagnosis of bladder cancer.

Methods: A systematic literature review, using the Medline database, was performed in July 2022 according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.

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Background: HPV is strongly related to cervical cancer. HPV lineages can contribute to a response to cervical cancer therapy. The aim of this research was to estimate the frequency of human papillomavirus (HPV)-16 lineages in specimens of cervical cancer, relate the pathological factors in these variants, and assess their response to treatment with radical chemoradiotherapy.

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Background: The prevalence of Human Papillomavirus (HPV) infection in the general population is widely known, however, there are still few studies related to this infection in minority groups, Thus, the objective is to analyze the frequency of human papillomavirus and associated factors in quilombola and gypsy women.

Methods: Cross-sectional research with 145 quilombola and gypsy women from Caxias, Maranhão. Two Pap smear collections were performed and a questionnaire with 46 questions was applied between January, 2020 and March, 2021.

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Background: Human Papillomavirus (HPV) is the main etiological factor for the development of cervical cancer. HPV 18 is the second most frequent type, accounting for up to 65% of all cases. HPV intratypic variation may influence the potential for progression to invasive cancer.

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Background: A high prevalence and incidence of head and neck tumors make Brazil the country with the third-highest number of cases of these malignant neoplasms. The main risk factors are smoking and alcohol consumption; however, cases related to the human papillomavirus (HPV) have tripled in number, demonstrating a changing disease profile. Studies have reported the prevalence of HPV in laryngeal squamous cell carcinoma (LSCC) to vary between 8% and 83%.

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Aim: To analyze the effect of the use of carvacrol in the cardiovascular system of spontaneously hypertensive rats (SHR).

Methods: Methods: Twenty animals were allocated in four groups, one group control Wistar receiving only sorbitol, used as vehicle of administration of the carvacrol (Wistar-Vehicle), one control group SHR, also receive only sorbitol (SHR-Vehicle), a third, treated with losartan (SHR-Losartan/50 mg/kg), and the fourth, treated with carvacrol (SHR - Carvacrol/20 mg/kg). Sorbitol, losartan and carvacrol were administered by oral gavage daily for 30-day.

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Article Synopsis
  • This study analyzed 25 cases of recurrent respiratory papillomatosis (RRP) in Brazil, focusing on patient demographics, clinical features, and HPV infection status over an 11-year period.
  • The majority of patients were young (median age 12.4 years), with juvenile RRP being more common (68%), and the most frequent symptom was dysphonia; 56% experienced recurrences, while tracheostomy was required for 26.9%.
  • HPV-6 was the most prevalent type among the patients, with a significant portion infected with low-risk and high-risk HPV strains, suggesting a need for further research to understand the disease and its implications better.
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Background: Human papillomavirus (HPV) and Trichomonas vaginalis (TV) infections are the most common sexually transmitted infections (STIs) globally. The latter has contributed to a variety of adverse outcomes for both sexes. Moreover, in Brazil, epidemiological studies on patients with STIs are limited.

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Objective: To verify the association between HPV infection and the presence of coinfections (, , and ) in women in the state of Maranhão.

Methods: HPV-DNA detection was performed by the nested PCR, using the primers PGMY09/11 and GP + 5/GP + 6. For the identification of sexually transmitted agents, conventional PCR was performed using the following primers: KL1/KL2 (), TVA5/TVA6 (), and HO1/HO3 ().

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This study aims to analyze the behaviour of cardiac autonomic modulation in adolescents with a family history of hypertension along with polymorphism of the ACE gene (rs1799752). The study involved 141 adolescents, with a mean age of 14.89, divided into the following six groups: offspring of normotensive parents (ONP): DD, DI and II; and offspring of hypertensive parents (OHP): DD, DI and II.

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Article Synopsis
  • - Cervical cancer is a major health issue for women globally, particularly in Brazil where it's the third most common cancer, with HPV found in around 90% of cases, predominantly HPV 16 variants contributing to its development.
  • - A study analyzed tumor samples from 120 cervical cancer patients, revealing that HPV was present in 73% of cases, with HPV 16 being the most common type, especially variant A, which was linked to specific tumor histological types.
  • - Understanding the variants of HPV 16 is crucial as it helps clarify their role in the progression and characteristics of cervical cancer, potentially impacting future research and treatment strategies.
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Background: Flavonoids from a variety of fruits, including açaí, have beneficial antioxidant activity in several diseases, including cancer. Breast cancer is the second most prevalent cancer among Brazilian women. Studies have shown the action of flavonoids on neoplastic cells, as well as on diabetes and neurodegenerative and cardiovascular diseases.

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Article Synopsis
  • Cardiovascular diseases are major global health issues, and recent research suggests that certain viruses, like HPV, may contribute to the risk of developing coronary artery disease (CAD), especially in women.
  • A study involving 52 climacteric women found that a significant number of those with CAD tested positive for HPV, indicating a strong link between HPV infection and CAD risk.
  • The findings suggest that HPV-positive women have a higher likelihood of having CAD, particularly with high-risk HPV types, but further research is necessary to explore the underlying mechanisms of this association.
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Article Synopsis
  • Human papillomavirus (HPV) infection varies by region and is prevalent in Quilombo communities in Brazil, which face unique health access challenges.
  • The study focused on 395 Quilombola women to identify specific HPV types and their association with sociodemographic factors and cervical abnormalities.
  • Results showed a 12.6% HPV infection rate, with high-risk types predominant; a significant link was found between HPV presence and cytological abnormalities, particularly in younger women.
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Introduction: Climacteric women are susceptible to a number of changes, among them osteoporosis. Osteoporosis is a disease characterized by low bone mass and susceptibility to fracture. Currently, this disease is a public health issue, being necessary to recognize its risk factors.

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Background: The human papillomavirus (HPV) prevalence in males has been reported to be between 3.6% and 84%, depending specially on the socioeconomic status. HPV infection has been related as a risk factor for penile cancer.

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Background: Opportunistic fungi are dispersed as airborne, ground and decaying matter. The second most frequent extra-pulmonary disease by Aspergillus is in the central nervous system.

Case Presentation: The case subject was 55 years old, male, mulatto, and an assistant surveyor residing in Teresina, Piauí.

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Background: Euterpe oleracea Mart., a plant from the Amazon region, is commonly known as açaí or juçara; it has high nutritional value and elevated levels of lipids, proteins, and minerals. Açaí is an abundant and much consumed fruit by the Amazon local population, and studies have demonstrated that it is rich in phytochemicals with antioxidant, anti-inflammatory, and anticancer activities.

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Background: Human papillomavirus (HPV) infection is one of the most common sexually transmitted diseases worldwide and is observed in both men and women. The presence of the virus is often associated with benign and malignant neoplasms of the oral cavity. We wished to investigate whether HPV infection in the genitalia was associated with HPV infection in the oral mucosa.

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Purpose: During colorectal cancer progression, the loss of differentiation and cell-cell adhesion as well as a higher migratory potential are well-defined features; however, the signaling mechanism governing these events is not fully elucidated. The aim of this study was to investigate the role that PI3K and downstream effectors play in controlling colon cancer malignant phenotypes.

Methods: HCT-116 cells, a human model of colon cancer, which are highly metastatic and undifferentiated, were treated with LY294002, a specific inhibitor of PI3K.

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