ABSTRACT
O objetivo deste estudo foi avaliar a mortalidade por diferentes tipos de cânceres em crianças de 0 a 4 anos, e a distribuição destes óbitos para as cinco regiões brasileiras. Os números de casos registrados e de óbitos foram provenientes do Instituto Nacional do Câncer (INCA) e Sistema de Informações sobre Mortalidade (SIM/DATASUS). As informações sobre nascidos vivos foram coletadas no SINASC. O período de análise foi de 1996 a 2017. Os tipos de neoplasias com maior número de óbitos notificados foram as leucemias e as neoplasias do Sistema Nervoso Central. O número de óbitos em crianças na faixa etária estudada por neoplasias malignas foram foi de 2.597 mortes, sendo as leucemias, as neoplasias do Sistema Nervoso Central e os neuroblastomas responsáveis por aproximadamente 70% destas mortes. A frequência de mortes em relação ao tipo de câncer indicou que as neoplasias do sistema nervoso central apresentam mortalidade de 36,27%; seguida por neuroblastomas com 32,13%; leucemias, com 29,31%; e neoplasias dos tecidos moles, 21,56%. As regiões Sudeste e Nordeste apresentaram maior número de casos. Os resultados desta pesquisa indicaram elevado número de casos de câncer e óbito de crianças de 0-4 anos, reforçando a necessidade de constantes investimentos para um melhor acesso destes pacientes ao sistema de saúde, considerando que diagnóstico e tratamento são importantes para a redução da mortalidade infantil.
Mortality by different types of cancer in 0 - 4 year-old children and its distribution for the five Brazilian regions are investigated. Method: number of registered cases and deaths were retrieved derived from the National Institute of Cancer (INCA) and from the Mortality Information System (SIM/DATASUS). Information on live births was retrieved from SINASC for the period of analysis between 1996 and 2017. Results: types of cancer with the highest number of deaths notified were leukemia and cancers of the Central Nervous System. Number of death in children within the age bracket, with malignant cancer, reached 2,597, with leukemia, cancers of the Central Nervous System and neuroblastomas causing approximately 70% of deaths. Frequency of deaths with regard to cancer type indicates that cancers of the central nervous system had a 36.27% of deaths, followed by neuroblastomas, with 32.13%, leukemias, with 29.31% and cancers of the soft tissues, with 21.65%. The southeastern and northeastern regions of Brazil had the highest indexes. Conclusions: Results reveal high incidence of cancer cases and deaths in 0 4 year-old children, requiring constant investments for better access of patients to health systems where diagnosis and treatment are essential for the decrease of child mortality.
ABSTRACT
Lavandula angustifolia is a plant of Lamiaceae family, with many therapeutic properties and biological activities, such as anticonvulsant, anxiolytic, antioxidant, anti-inflammatory, and antimicrobial activities. The aim of this study was to evaluate the effect of Lavandula angustifolia Mill. essential oil (LEO) on acute inflammatory response. LEO was analyzed using gas chromatography-mass spectrometry (GC-MS) and nuclear magnetic resonance spectroscopy (NMR) methods and showed predominance of 1,8-cineole (39.83%), borneol (22.63%), and camphor (22.12%). LEO at concentrations of 0.5, 1, 3, and 10 µg/ml did not present in vitro cytotoxicity. Additionally, LEO did not stimulate the leukocyte chemotaxis in vitro. The LEO topical application at concentrations of 0.25, 0.5, and 1 mg/ear reduced edema formation, myeloperoxidase (MPO) activity, and nitric oxide (NO) production in croton oil-induced ear edema model. In carrageenan-induced paw edema model, LEO treatment at doses of 75, 100, and 250 mg/kg reduced edema formation, MPO activity, and NO production. In dextran-induced paw edema model, LEO at doses of 75 and 100 mg/kg reduced paw edema and MPO activity. In conclusion, LEO presented anti-inflammatory activity, and the mechanism proposed of LEO seems to be, at least in part, involving the participation of prostanoids, NO, proinflammatory cytokines, and histamine.
ABSTRACT
This study was aimed to investigate the effect of Silymarin (SLM) on the hypertension state and the liver function changes induced by acetaminophen (APAP) in spontaneously hypertensive rat (SHR). Animals normotensive (N) or hypertensive (SHR) were treated or not with APAP (3 g/kg, oral) or previously treated with SLM. Twelve hours after APAP administration, plasmatic levels of liver function markers: alanine aminotransferase (ALT), aspartate aminotransferase (AST), glucose (GLU), gamma glutamyl transferase (γ-GT), and alkaline phosphatase (ALP) of all groups, were determined. Liver injury was assessed using histological studies. Samples of their livers were then used to determine the myeloperoxidase (MPO) activity and nitric oxide (NO) production and were also sectioned for histological analysis. No differences were observed for ALT, γ-GT, and GLU levels between SHR and normotensive rats groups. However, AST and ALP levels were increased in hypertensive animals. APAP treatment promoted an increase in ALT and AST in both SHR and N. However, only for SHR, γ-GT levels were increased. The inflammatory response evaluated by MPO activity and NO production showed that SHR was more susceptible to APAP effect, by increasing leucocyte infiltration. Silymarin treatment (Legalon) restored the hepatocyte functional and histopathological alterations induced by APAP in normotensive and hypertensive animals.
ABSTRACT
Estragole, a chemical constituent of the essential oils of many aromatic plants, is used as flavoring in beverage and food industries. In vivo and in vitro experimental assays have shown that EST has sedative, anticonvulsant, antioxidant, antimicrobial, and anesthetic activity. In this work, we evaluate the effect of EST on leukocyte behavior and phagocytic activity of macrophages. In the peritonitis model, EST (500 and 750 mg/kg) decreased the infiltration of peritoneal exudate leukocytes. In vitro chemotaxis assay showed that EST (3, 10, 30, and 60 µg/mL) inhibited neutrophil migration toward fMLP. In the in vivo microcirculation assay, EST at doses of 250, 500, and 750 mg/kg significantly reduced the number of rolling and adherent leukocytes and at doses of 250 and 500 mg/kg decreased number of leukocyte migrated to perivascular tissue. The results showed that EST (3, 10, and 30 µg/mL) was able to stimulate the macrophages phagocytosis but only at concentration of 10 µg/mL promoted an increase in nitric oxide (NO) production. In conclusion, this study showed that EST had potential anti-inflammatory effects, likely by inhibiting leukocyte migration and by stimulating macrophages phagocytosis.