Publications by authors named "Katiuska Marins"

Article Synopsis
  • Environmental contaminants like pesticides, particularly glyphosate, may contribute to neurodevelopmental disorders in vulnerable developing brains.
  • A systematic review examines the effects of maternal exposure to glyphosate on rodent offspring, focusing on behavioral, biochemical, and genetic changes linked to perinatal exposure.
  • The findings demonstrate that glyphosate disrupts key neurological processes, indicating a significant need for improved risk assessment methods to develop effective prevention and intervention strategies against environmental neurotoxins.
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This study aims to elucidate the mechanisms linking occupational pesticide exposure to depression among rural workers from Maravilha, Brazil. We assessed the mental health, oxidative, and inflammatory profiles of farmers exposed to pesticides (N = 28) and compared them to an urban control group without occupational exposure to pesticides (N = 25). Data on sociodemographic, occupational history, and clinical records were collected.

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Studies have indicated that glyphosate induces endocrine disruption and may adversely affect the male reproductive system. However, evidence of its effects on ovarian function is poorly understood so far, making further studies necessary on the mechanisms of the glyphosate toxicity in the female reproductive system. The aim of this work was to evaluate the effect of a subacute exposure (28 days) to the glyphosate-based formulation Roundup® (1.

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Article Synopsis
  • The study found that exposure to pyriproxyfen (PPF) in zebrafish led to higher levels of reactive oxygen species and lower glutathione, indicating oxidative stress in the ovaries.
  • It showed increased activity of certain antioxidant enzymes but unchanged activity of γ-glutamyltransferase, suggesting the fish's response to oxidative damage.
  • Histological analysis revealed changes in ovarian structure, including fewer mature oocytes and increased atresia, highlighting PPF's role as an endocrine disruptor that may negatively impact fish reproduction.
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Background: Head and neck cancer (HNC) comprises a spectrum of neoplasms that affect the upper aerodigestive tract and are the sixth most common cancers worldwide. Individuals with HNC exhibit various symptoms and metabolic changes, including immune alterations and alterations of the purinergic pathway, which may signal worse outcomes. Therefore, the purpose of this research was to measure the activity of purinergic ectoenzymes and interleukins in patients with HNC, oral cavity cancer, and larynx cancer.

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Ethnopharmacological Relevance: Maytenus ilicifolia Mart. ex Reissek, Celastraceae, is popularly known as "espinheira-santa" and used to treat pathologies related to the stomach. However, in popular culture, this species has also been used to treat other disorders such as diabetes, but without scientific evidence, requiring more phytochemical and pharmacological studies on the plant.

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Article Synopsis
  • The study examined how pyriproxyfen affects calcium levels in zebrafish testes, revealing that it increases Ca influx by opening specific calcium channels and inhibiting certain pumps.
  • In vivo tests showed that exposure to pyriproxyfen leads to oxidative stress, as indicated by increased lipid peroxidation, changes in antioxidant levels, and morphological changes in the testes and liver.
  • The findings suggest that pyriproxyfen toxicity is linked to calcium overload and disrupted antioxidant mechanisms, which could also imply potential estrogen-like effects in the liver.
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Iron (Fe) and manganese (Mn) are metals commonly found at high concentrations in underground water. These metals are essential for the good functioning of living organisms, but high concentrations lead to imbalance, potentiating the appearance of pathologies. This study aimed to evaluate the effect of exposure to naturally occurring metals in groundwater, using zebrafish (Danio rerio) as an experimental model.

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