RESUMO
Non-alcoholic fatty liver is the leading cause of hepatic disease worldwide and ranges from simple steatosis to non-alcoholic steatohepatitis (NASH) due to cell injury, oxidative stress, and apoptosis. The kinins' role in the liver has been studied in experimental fibrosis, partial hepatectomy, and ischemia-reperfusion and is related to cell death and regeneration. We investigated its role in experimental NASH induced by a methionine-choline deficient diet for 4 weeks. After that, liver perfusion was performed, and bradykinin (BK) or des-Arg9-BK was infused. Cell death was evaluated by cathepsin-B and caspase-3 activity and oxidative stress by catalase (CAT), glutathione S-transferase, and superoxide dismutase (SOD) activities, as well as malondialdehyde and carbonylated proteins. In control livers, DABK increased CAT activity, which was reversed by antagonist DALBK. In the NASH group, kinins tend to decrease antioxidant activity, with SOD activity being significantly reduced by BK and DABK. Malondialdehyde levels increased in all NASH groups, but carbonylated protein did not. DABK significantly decreased cathepsin-B in the NASH group, while caspase-3 was increased by BK in control animals. Our results suggest that B1R and/or B2R activation did not induce oxidative stress but affected the antioxidant system, reducing SOD in the NASH group.
RESUMO
BACKGROUND/AIM: It has been shown that the methionine-choline deficient (MCD) diet induces hepatocarcinogenesis, but not in extrahepatic organs, such as the testis, and pancreas, although may increase chemical-induced carcinogenesis in the colon, mammary gland, esophagus, and pancreas. Accumulating evidence suggests that salivary glands are very susceptible to stress conditions, such as radiation, hyperglycemia, and exposure to xenobiotics in vivo. This study aimed to analyze the histological changes on the major salivary glands (parotid, submandibular, and sublingual) after MCD diet administration. MATERIALS AND METHODS: Male Swiss mice were submitted to ad libitum access to the control (AIN-76) or MCD diet for 28 days. The rebound group received the MCD diet for 24 days and the control diet for 10 days. Using the AxioImager A2 microscope, the hematoxylin-eosin (HE) stained specimens (4 mm) were evaluated for tissue degeneration, nuclear hyperchromatism and atrophy. RESULTS: In the parotid gland from the MCD group, tissue degeneration, pyknosis, apoptosis and atrophy were observed, which remained in the rebound group, associated with hyperchromatism. In the submandibular gland from both MCD and rebound groups, severe tissue disorganization was associated with cell pleomorphism, hyperchromatic cells, apoptosis, increased eosinophilia, and inflammatory infiltrate. Finally, in the sublingual gland, there were no histological alterations in the experimental groups compared to the control. CONCLUSION: MCD can induce pre-neoplastic changes in the mouse parotid and submandibular glands, which are not reversed by a change in the diet.
Assuntos
Colina , Metionina , Animais , Atrofia/patologia , Dieta , Masculino , Camundongos , Racemetionina , Glândulas Salivares/patologiaRESUMO
OBJECTIVE: To evaluate the impact of xerostomia on the quality of life (QOL) of people living with HIV/AIDS (PLWHA) from Brazil. STUDY DESIGN: A cross-sectional study was performed on 195 PLWHA. Xerostomia was detected by asking a question about the sensation of having "dry mouth," and Oral Health Impact Profile 14 (OHIP-14) was used to measure the impact of xerostomia on QOL. Time of diagnosis of HIV/AIDS was assessed. RESULTS: A total of 78 (40.0%) subjects presented with xerostomia. Xerostomia was associated with female gender, low amount of saliva perceived (p ≤ .01), difficulty in swallowing food (p ≤ .05), and showed to have a negative impact on QOL as measured by OHIP-14 (p ≤ .01). CONCLUSION: Xerostomia was frequent and showed to have a negative impact on the QOL of PLWHA.
Assuntos
Infecções por HIV/complicações , Qualidade de Vida , Xerostomia/epidemiologia , Xerostomia/psicologia , Adolescente , Adulto , Idoso , Análise de Variância , Brasil/epidemiologia , Estudos Transversais , Feminino , Infecções por HIV/psicologia , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores Sexuais , Estatísticas não Paramétricas , Inquéritos e Questionários , Xerostomia/complicações , Adulto JovemRESUMO
As in many areas of Brazil, the AIDS epidemic in Curitiba is relatively stable, but surveillance is important to support public policy. The molecular characteristics of HIV may be instrumental for monitoring epidemic trends. We evaluated plasma HIV-1 RNA (n = 37) from 38 cases presenting with positive serology, who were among 820 consenting volunteers visiting the downtown counselling and serology testing centre. Seroprevalence was 4.6 percent (CI 95 percent 3.2-6.3) and the estimated HIV incidence, as defined by the BED assay, was 2.86 persons/years (CI 95 percent 1.04-4.68). An additional set of contemporaneous, anonymous samples from a local laboratory was also analysed (n = 20). Regions of the HIV-1 polymerase (n = 57) and envelope (n = 34) were evaluated for subtyping, determination of mosaic structure, primary drug resistance mutations (pDRM), envelope V3 loop motifs and amino acid signatures related to viral tropism. HIV-1 clade B was observed in 53 percent of cases; HIV-1C in 30 percent and BC mosaics in 14 percent, with one F genome and one CF mosaic. Clade C infection was associated with recent infections among males (p < 0.03). Stanford surveillance pDRM was observed in 8.8 percent of sequences, with 7 percent showing high level resistance to at least one antiretroviral drug. Tropism for CXCR4 co-receptor was predicted in 18 percent of envelope sequences, which were exclusively among clade B genomes and cases with serological reactivity to chronic infection.
Assuntos
Adulto , Feminino , Humanos , Masculino , Adulto Jovem , Infecções por HIV/virologia , HIV-1 , Sequência de Bases , Brasil/epidemiologia , Farmacorresistência Viral/genética , Genótipo , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Incidência , Dados de Sequência Molecular , Mutação , RNA Viral/sangue , RNA Viral/genética , Alinhamento de Sequência , Adulto JovemRESUMO
As in many areas of Brazil, the AIDS epidemic in Curitiba is relatively stable, but surveillance is important to support public policy. The molecular characteristics of HIV may be instrumental for monitoring epidemic trends. We evaluated plasma HIV-1 RNA (n = 37) from 38 cases presenting with positive serology, who were among 820 consenting volunteers visiting the downtown counselling and serology testing centre. Seroprevalence was 4.6% (CI 95% 3.2-6.3) and the estimated HIV incidence, as defined by the BED assay, was 2.86 persons/years (CI 95% 1.04-4.68). An additional set of contemporaneous, anonymous samples from a local laboratory was also analysed (n = 20). Regions of the HIV-1 polymerase (n = 57) and envelope (n = 34) were evaluated for subtyping, determination of mosaic structure, primary drug resistance mutations (pDRM), envelope V3 loop motifs and amino acid signatures related to viral tropism. HIV-1 clade B was observed in 53% of cases; HIV-1C in 30% and BC mosaics in 14%, with one F genome and one CF mosaic. Clade C infection was associated with recent infections among males (p < 0.03). Stanford surveillance pDRM was observed in 8.8% of sequences, with 7% showing high level resistance to at least one antiretroviral drug. Tropism for CXCR4 co-receptor was predicted in 18% of envelope sequences, which were exclusively among clade B genomes and cases with serological reactivity to chronic infection.
Assuntos
Infecções por HIV/virologia , HIV-1/genética , Adulto , Sequência de Bases , Brasil/epidemiologia , Farmacorresistência Viral/genética , Feminino , Genótipo , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Humanos , Incidência , Masculino , Dados de Sequência Molecular , Mutação , RNA Viral/sangue , RNA Viral/genética , Alinhamento de Sequência , Adulto JovemRESUMO
O presente estudo tem por objetivo monitorar e avaliar o Programa Saúde e Prevenção nas Escolas, no município de Curitiba. Foi realiado um estudo de caso para uma Avaliação de Resultados com Contribuição de Valores Adicionais. O propósito desta abordagem é prover direcionamento para elaboração de políticas públicas, prestação de contas aos atores envolvidos e retroalimentação para implementação de programas e serviçis de saúde. Houve seleção de duas escoals, com suas respectivas Unidades Básicas de Saúde (UBS) de referência...