Publications by authors named "Ribeiro B"

Lutzomyia longipalpis Lutz & Neiva, 1912 (Diptera, Psychodidae), is the primary vector of Leishmania infantum Nicole, 1908, the etiological agent of American visceral leishmaniasis. During their development, sandfly larvae pass through four instars, consuming soil particles enriched with microorganisms and decomposing organic material. In numerous insect species, the intestinal epithelium not only secretes digestive enzymes and absorbs digested nutrients but also carries out additional functions, such as regulating luminal pH and facilitating the absorption or secretion of ions and water.

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Ethnopharmacological Relevance: Anxiety and depression are leading causes of disability worldwide, often exacerbated by chronic stress. Schinus terebinthifolia Raddi. has been used in traditional medicine for several purposes.

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Macrophages represent a fundamental component of the innate immune system that play a critical role in detecting and responding to pathogens as well as danger signals. Leishmania spp. infections lead to a notable alteration in macrophage metabolism, whereby infected cells display heightened energy metabolism that is linked to the integrity of host mitochondria.

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Article Synopsis
  • Long COVID, also known as post-acute sequelae of COVID-19 (PASC), involves lasting symptoms affecting various body systems, particularly the central nervous system (CNS) which includes issues like fatigue, brain fog, and cognitive deficits.
  • The review highlights potential mechanisms for neuro-PASC, suggesting that vascular dysfunction and disruption of the blood-brain barrier (BBB) could be key contributors to these neurological symptoms.
  • It further investigates the role of the COVID-19 spike protein interacting with brain cell receptors, which may play a significant part in the pathophysiology of long COVID symptoms.
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Background: Recent evidence indicates that statins have anti-inflammatory and antioxidant effects, leading to several investigations of whether statins have a neuroprotective effect and may benefit patients with Parkinson's disease (PD). However, the potential mechanisms of this class of medications as modifiers of the course of PD in already diagnosed patients is still unclear.

Objectives: To assess the effectiveness of statins as modifiers of established PD.

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Heavy crude oil reserves are characterized by their high viscosity and density, largely due to significant quantities of asphaltenes. The removal of asphaltene precipitates from oil industry installations is crucial, as they can contaminate catalysts and obstruct pipelines. Therefore, this study aimed to bio-transform heavy oil asphaltenes into smaller molecules using the yeast Yarrowia lipolytica, known for its ability to efficiently degrade hydrophobic substrates.

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Article Synopsis
  • Yarrowia lipolytica is recognized for its high enzyme production and ability to grow in dense cultures, making it valuable in biotechnology.
  • The study explored the effects of eighteen deep eutectic solvents (DES) on the yeast's growth, finding most DES inhibited growth compared to a control medium, except for one specific DES combination.
  • Analysis of the enzyme hexokinase (YlHxk) revealed how different DES components interact at a molecular level, suggesting potential pathways for improving biotechnological applications while also hinting at ways to reduce research costs and time.
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In Brazil, most of cereal production is concentrated in the Cerrado which is characterized by poor soils. Thus, the soil fertility management is important for suitable use of Cerrado's soils. After 40 years of increasing use of Cerrado for agricultural purposes, this work aimed to evaluate the soil fertility of a representative area known as Triângulo Mineiro and Alto Paranaíba (TMAP) mesoregion.

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New diagnostic and therapeutic approaches have been increasingly demanded due to the high morbidity and mortality associated with breast cancer. Recently, changes in the collagen fibres in mammary neoplasms have been shown to provide information that can be helpful for more accurate diagnosis. We aimed to conduct a comparative analysis of the tumour stroma in human and canine mammary neoplasms to assess the relationship between collagen modifications and the behaviour of carcinomas in both species, by multiphoton microscopy.

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Microbiome restoration using beneficial microorganisms for corals (BMCs) comprise a promising strategy to help corals cope with anthropogenic stressors. However, there is limited knowledge on the uptake of BMCs by nontarget animals, especially sponges. This study explores whether sponges can acquire BMCs upon direct application and whether inoculations affect sponge health.

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  • Hypertensive disorders in pregnancy can lead to serious complications, prompting the need for medication such as hydralazine and labetalol to lower blood pressure.
  • A systematic review of 19 randomized controlled trials compared the effectiveness and safety of intravenous labetalol versus hydralazine in managing these conditions.
  • The findings indicated no significant differences in blood pressure outcomes between the two medications, but labetalol was found to significantly reduce instances of maternal hypotension compared to hydralazine.
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Chikungunya and Mayaro fevers are viral infectious diseases characterized by fever and arthralgia, for which there are currently no effective vaccines or treatments. The urgent need for novel antiviral agents against Chikungunya virus (CHIKV) and Mayaro virus (MAYV) has led to interest in plant-based compounds that can disrupt the viral replication cycle. (L.

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Objective: To analyze the prevalence and associated factors with chronic diseases among women of reproductive age in primary health care.

Method: Cross-sectional study conducted with 397 women of reproductive age living in northern Paraná, Brazil. Data were collected from July 2019 to September 2020.

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Background: Oropouche fever, an orthobunyavirus disease endemic in Brazilian Amazon, has caused many febrile epidemics. In 2024, an epidemic of Oropouche fever spread in Brazil, with more than 7930 cases reported between Jan 1 and Aug 31. Infections in pregnant people have suggested the possibility of negative fetal consequences, therefore we tested newborns with microcephaly for known congenital pathogens and Oropouche virus (OROV).

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Flexible intramedullary nailing and external fixation have become the main methods to surgically treat femur fractures in children. This study aimed to search the current literature and evaluate the clinical and radiographic results of surgical treatment by comparing these methods and investigating their associated complications. This systematic review was carried out following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) recommendations.

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  • The study investigated two methods—high-pressure homogenization (HPH) at 100 and 1200 bar, and enzymatic hydrolysis (EH)—to extract biostimulants from Tetradesmus obliquus, a microalga grown in piggery wastewater.
  • The extracts were tested on garden cress, mung beans, and cucumbers to assess their growth-promoting effects, with untreated microalgal cultures showing the best germination rates and cytokinin-like activity.
  • High-pressure homogenization at 1200 bar and enzymatic hydrolysis yielded significant increases in auxin-like activity for mung beans and cucumbers, suggesting that the extracted biomass could be beneficial for sustainable agricultural applications.
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  • Actinomycosis is a rare infection caused by certain types of gram-positive bacteria, primarily affecting soft and bone tissues, and occurs in about 3% of cases in children.
  • A case involving a 4-year-old girl showed an extensive ulcerative lesion in the maxilla, which developed after a prior diagnosis of scarlet fever and led to damage in surrounding tissues.
  • Successful treatment involved surgical removal of affected bone and teeth, followed by local treatment, highlighting the need for pediatric dentists to recognize actinomycosis and its implications for diagnosis and care.
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  • The Atlantic Forest Biome (AFB) supports the spread of vector mosquitoes that transmit the Yellow Fever virus (YFV), causing significant fatalities in humans and non-human primates from 2016 to 2020.
  • This study analyzed the patterns of YF cases in both humans and non-human primates during an outbreak period, using statistical models to understand the factors related to YFV spread, such as environmental conditions, climate, and vaccination coverage.
  • Findings show that YFV outbreaks are linked to specific forest environments and certain monkey species, while human cases are less prevalent in urban areas, suggesting that improving vaccination and surveillance strategies in various settings is crucial for controlling the virus.
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Nuclear receptors (NRs) play a crucial role as biological targets in drug discovery. However, determining which compounds can act as endocrine disruptors and modulate the function of NRs with a reduced amount of candidate drugs is a challenging task. Moreover, the computational methods for NR-binding activity prediction mostly focus on a single receptor at a time, which may limit their effectiveness.

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Purpose: To review and validate the elements of the nursing diagnosis (ND) "Insufficient breast milk production" (00216) based on the literature and expert consensus, and to construct operational definitions (ODs) for its defining characteristics (DCs).

Methods: It is a methodological study carried out in two phases. In the first phase, a scoping review was conducted, and in the second, a committee of experts reviewed the elements' content.

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Objective: to analyze the association between burnout and sociodemographic, work factors, lifestyle habits and health conditions of military police officers in a municipality in the state of Paraná, Brazil.

Method: cross-sectional research with 131 military police officers. Data were analyzed using the Statistical Package for the Social Sciences software and the R program.

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The yellow fever virus (YFV) is a single stranded RNA virus belonging to the genus Orthoflavivirus that is capable of zoonotic transmissions that infect nonhuman and human primates. It is endemic in Brazil with recurrent epidemics of the disease, and it is transmitted through mosquitoes. The detection and immunization against YFV and other flaviviruses are fundamental for the management of the impacts of the disease in human environments.

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Trypanosoma evansi is a unicellular protozoan responsible for causing a disease known as "surra," which is found in different regions of the world and primarily affects horses and camels. Few information is known about virulence factors released from the parasite within the animals. The organism can secrete extracellular vesicles (EVs), which transport a variety of molecules, including proteins.

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Studies on animal virome have mainly concentrated on chordates and medically significant invertebrates, often overlooking sylvatic mosquitoes, constituting a major part of mosquito species diversity. Despite their potential role in arbovirus transmission, the viromes of sylvatic mosquitoes remain largely unexplored. These mosquitoes may also harbor insect-specific viruses (ISVs), affecting arboviral transmission dynamics.

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Endometriosis is a chronic gynecological disease, primarily associated with pelvic pain and infertility, that affects approximately 10% of the women of reproductive age. Estrogen plays a central role in endometriosis, and there is growing evidence that endocrine disruptors, such as phthalates, may contribute to its development. This review aimed to determine whether there is a causal relationship between phthalate exposure and the development of endometriosis, as well as the possible effects of phthalates on fertility, by analyzing epidemiological data.

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