Publications by authors named "Marcelo Mota"

Conventional as well as advanced imaging modalities contribute to accurate detection of prostate cancer and have important roles in screening, staging, active surveillance, and evaluation for biochemical recurrence.

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Female sex workers (FSWs) are an important group of people vulnerable to sexually transmitted infections. Northern Brazil is a rural and socioeconomically underdeveloped region, with lack of epidemiological information on syphilis in key populations. This study investigated the prevalence and factors associated with exposure to among FSWs in three major cities in northern Brazil.

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Aims: The hallmarks of type 2 diabetes (T2D) are hyperglycaemia and insulin resistance. These factors, at the cellular level, are associated with mitochondrial dysfunction and increased glucose uptake. Such events are poorly explored in the context of the salivary glands.

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Termite colonies are usually headed by primary reproductives, which establish nests during the swarming season. However, secondary reproductives may develop in some species and become supplementary or replacement breeders, extending colony lifespan. Here we investigate the developmental origin, fecundity and genetic characterization of ergatoid reproductives in the Neotropical termite Nasutitermes aquilinus (Holmgren), using morphometrical and histological techniques, five microsatellite loci and the COI mitochondrial DNA.

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Epilepsy is a common disease presenting with recurrent seizures. Hippocampal sclerosis (HS) is the commonest histopathological alteration in patients with temporal lobe epilepsy (TLE) undergoing surgery. HS physiopathogenesis is debatable.

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Background:: Resistance exercise (RE) has been recommended for patients with cardiovascular diseases. Recently, a few studies have demonstrated that the intensity of a single bout of RE has an effect on endothelial adaptations to exercise. However, there is no data about the effects of different volumes of RE on endothelium function.

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Resistance training is one of the most common kind of exercise used nowadays. Long-term high-intensity resistance training are associated with deleterious effects on vascular adjustments. On the other hand, is unclear whether low-intensity resistance training (LI-RT) is able to induce systemic changes in vascular tone.

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Aims: We evaluated the acute effects of different intensities of resistance exercise over endothelium-dependent vasodilatation, eNOSser1177 phosphorylation level and endothelial production of NO in superior mesenteric artery of healthy rats.

Main Methods: Groups: control (Ct), resistance exercise in the intensities of 30% (Ex30%), 50% (Ex50%) and 70% (Ex70%) of the maximal load established by the maximal repetition test (1RM). Exercise protocol: 15 sets of 10 repetitions.

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Background: Hypertension is a public health problem and increases the incidence of cardiovascular diseases.

Objective: To evaluate the effects of a resistance exercise session on the contractile and relaxing mechanisms of vascular smooth muscle in mesenteric arteries of NG-nitro L-arginine methyl ester (L-NAME)-induced hypertensive rats.

Methods: Wistar rats were divided into three groups: control (C), hypertensive (H), and exercised hypertensive (EH).

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Aquatic birds are the natural reservoir for avian influenza viruses (AIV). Habitats in Brazil provide stopover and wintering sites for water birds that migrate between North and South America. The current study was conducted to elucidate the possibility of the transport of influenza A viruses by birds that migrate annually between the Northern and Southern Hemispheres.

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Background: Resistance exercise effects on cardiovascular parameters are not consistent.

Objectives: The effects of resistance exercise on changes in blood glucose, blood pressure and vascular reactivity were evaluated in diabetic rats.

Methods: Wistar rats were divided into three groups: control group (n = 8); sedentary diabetic (n = 8); and trained diabetic (n = 8).

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Background: Arterial hypertension is a multifactorial chronic condition caused by either congenital or acquired factors.

Objective: To evaluate the effects of Resistance Training (RT) on arterial pressure, and on vascular reactivity and morphology, of L-NAME-treated hypertensive rats.

Methods: Male Wistar rats (200 - 250 g) were allocated into Sedentary Normotensive (SN), Sedentary Hypertensive (SH) and Trained Hypertensive (TH) groups.

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Background And Purpose Of The Study: The hypotensive activity of the essential oil of Mentha x villosa and its main constituent, the monoterpene rotundifolone, have been reported. Therefore, our objective was to evaluate the vasorelaxant effect of monoterpenes found in medicinal plants and establish the structure-activity relationship of rotundifolone and its structural analogues on the rat superior mesenteric artery.

Methods: Contractions of the vessels were induced with 10 μM of phenylephine (Phe) in rings with endothelium.

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