Publications by authors named "Fernanda Machado Fonseca"

Histoplasmosis is a widespread systemic disease caused by , prevalent in the Americas. Despite its significant morbidity and mortality rates, no vaccines are currently available. Previously, five vaccine targets and specific epitopes for were identified.

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Article Synopsis
  • * This study aimed to identify potential protein targets for vaccine candidates and drug development by analyzing genome sequences of four fungal strains using bioinformatics techniques like reverse vaccinology and subtractive genomics.
  • * Four promising protein candidates for vaccine development were identified, along with four natural compounds that may effectively interact with these proteins, offering hope for better treatments and preventive measures against histoplasmosis.
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In recent decades, emerging fungal infections have changed the clinical mycology scenario as a consequence of the advances in medical diagnostics and therapeutic procedures, long hospitalization times, and the growing number of individuals with debilitating chronic diseases and impaired immune systems. This report presents a 19 months old Brazilian female patient who developed a severe fungal sepsis by an uncommon yeast. She was admitted at the intensive care unit with severe pneumonia, bronchopulmonary dysplasia, and weight-for-age z score of less than -2.

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Background: Statins are used as cholesterol-lowering drugs and may also have direct antimicrobial effects.

Objective: To evaluate synergic interactions between simvastatin and both amphotericin B and fluconazole, against environmental strains of Cryptococcus neoformans isolated from captive birds' droppings.

Designand Setting: Experimental study conducted at Federal University of Piauí, Parnaíba, in collaboration with Federal University of Triângulo Mineiro, Uberaba, Brazil.

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Trypanosoma cruzi and Helicobacter pylori (HP) are pathogens that cause chronic diseases and have been associated with hypergastrinemia. The aim of this study was to evaluate the fasting gastrin levels in patients with different clinical forms of Chagas disease (CD), coinfected or not by HP. The enrolled individuals were outpatients attending at the university hospital.

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Cryptococcal infections are mainly caused by members of the Cryptococcus neoformans species complex (molecular types VNI, VNII, VNB, VNIV and the AD hybrid VNIII). PCR of the mating type loci and MLST typing using the ISHAM-MLST consensus scheme were used to evaluate the genetic relationship of 102 (63 clinical and 39 environmental) C. neoformans isolates from Uberaba, Brazil and to correlate the obtained genotypes with clinical, antifungal susceptibility and virulence factor data.

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Objectives: Galectins are mediators that play an important role in the inflammatory response and in this study we analyzed the expression of Galectins (Gal) -1, -3 and -9 in biopsies of the gastric antrum of patients with upper gastrointestinal symptoms.

Methodology: 44 patients with upper digestive tract symptoms were evaluated, and underwent Upper Digestive Endoscopy examination. Sections of the gastric antrum were fixed in buffered formaldehyde at 4% in order to perform the anatomopathological examination and immunohistochemical analysis for Galectins-1, -3 and -9 expression.

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Introduction: Most studies that have evaluated the stomachs of patients with Chagas disease were performed before the discovery of Helicobacter pylori and used no control groups. This study compared the gastric features of chagasic and non-chagasic patients and assessed whether gastritis could be associated with Chagas disease.

Methods: Gastric biopsy samples were taken from patients who underwent endoscopy for histological analysis according to the Updated Sydney System.

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Background: Although Cryptococcus laurentii has been considered saprophytic and its taxonomy is still being described, several cases of human infections have already reported. This study aimed to evaluate molecular aspects of C. laurentii isolates from Brazil, Botswana, Canada, and the United States.

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Introduction: In this study, we evaluated the seroprevalence of Helicobacter pylori infection among chagasic and non-chagasic subjects as well as among the subgroups of chagasic patients with the indeterminate, cardiac, digestive, and cardiodigestive clinical forms.

Methods: The evaluated subjects were from the Triângulo Mineiro region, Minas Gerais, Brazil. Chagasic patients showed positive reactions to the conventional serological tests used and were classified according to the clinical form of their disease.

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