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1.
Braz. J. Pharm. Sci. (Online) ; 57: e18497, 2021. tab, graf
Article in English | LILACS | ID: biblio-1339303

ABSTRACT

Sclareol (SC) is arousing great interest due to its cytostatic and cytotoxic activities in several cancer cell lines. However, its hydrophobicity is a limiting factor for its in vivo administration. One way to solve this problem is through nanoencapsulation. Therefore, solid lipid nanoparticles (SLN-SC) and nanostructured lipid carriers (NLC-SC) loaded with SC were produced and compared regarding their physicochemical properties. NLC-SC showed better SC encapsulation than SLN-SC and was chosen to be compared with free SC in human cancer cell lines (MDA-MB-231 and HCT-116). Free SC had slightly higher cytotoxicity than NLC-SC and produced subdiploid DNA content in both cell lines. On the other hand, NLC-SC led to subdiploid content in MDA-MB-231 cells and G2/M checkpoint arrest in HCT-116 cells. These findings suggest that SC encapsulation in NLC is a way to allow the in vivo administration of SC and might alter its biological properties


Subject(s)
Cells/classification , Neoplasms , Organization and Administration , Biological Products/adverse effects , DNA , Cell Line , HCT116 Cells/classification , Cytostatic Agents/pharmacology , Hydrophobic and Hydrophilic Interactions
2.
Article in Portuguese | LILACS | ID: biblio-1047103

ABSTRACT

Introdução: O câncer é uma doença de origem multifatorial, com crescimento irregular e descontrolado de células, cujo tratamento pode desencadear aversões alimentares e mudanças na qualidade de vida. Objetivo: Avaliar a influência do tratamento quimioterápico no comportamento alimentar e na qualidade vida de pacientes oncológicos. Método: Estudo longitudinal e observacional, realizado de junho a outubro de 2018, no Hospital Universitário da Universidade Federal do Piauí. Os dados foram obtidos em dois momentos: T0, socioeconômicos, demográficos, clínicos, de comportamento alimentar e qualidade de vida; e T1, de comportamento alimentar e qualidade de vida. Foram utilizados os testes Shapiro-Wilk, t-Student e Wilcoxon; Pearson e Spearman com p< 0,05. Resultados: Dos 17 pacientes, a maioria era do sexo feminino (82,4%), média de 54,2 anos, renda familiar de um a dois salários mínimos (64,7%) e de etnia parda (76,5%). O câncer mais frequente foi o de mama (52,9%). Houve aversões alimentares em T1 para: "sopas e massas" (p=0,001), "carnes e peixes" (p=0,016), e "doces, sobremesas e aperitivos" (p=0,001). Houve diferença significativa na qualidade de vida quanto à medida global de saúde (p=0,001) e dificuldade financeira (p=0,026), assim também como nas correlações entre qualidade de vida e comportamento alimentar. Conclusão: Os resultados reforçam a necessidade de constante monitoramento nutricional desde o início do tratamento quimioterápico com o intuito de evitar e/ou reduzir suas repercussões negativas no estado nutricional e, consequentemente, na qualidade de vida. Além disso, a realização de mais estudos, com amostra e intervalo de tempo maiores, é necessária.


Introduction: Cancer is a multifactorial disease with uncontrolled cells growth, whose treatment can trigger food aversions and changes in quality of life. Objective: To evaluate the influence of chemotherapy treatment on eating behavior and quality of life of oncologic patients. Method: A longitudinal and observational study, carried out from June to October of 2018, at the University Hospital of the Federal University of Piauí. The data were obtained in two moments: T0, socioeconomic, demographic, clinical, food behavior and quality of life, and T1, food behavior and quality of life. The following tests were used: Shapiro-Wilk, t-Student and Wilcoxon; Pearson and Spearman, with p <0.05. Results: Of the 17 patients, the majority were females (82.4%), medium age of 54.2 years, family income of 1 to 2 minimum wages (64.7%) and ethnics, brown (76.5%). Breast cancer was the most frequent (52.9%). There were food aversions in T1, for "soups and pastas" (p=0.001), "meats and fish" (p=0.016), and "sweets, desserts and appetizers (p=0.001). There was a significant difference in quality of life regarding the general health status (p=0.001) and financial difficulty (p=0.026), as well as in correlations between quality of life and food behavior. Conclusion: The results reinforce the need of constant nutritional monitoring since the beginning of the chemotherapy in order to avoid and/or reduce the negative repercussions on the nutritional status and, consequently, on the quality of life. In addition, more studies with longer time ranges and larger samples are required.


Introducción: El cáncer es una enfermedad de origen multifactorial, con crecimiento descontrolado de células, cuyo tratamiento puede desencadenar aversiones alimenticias y cambios en la calidad de vida. Objetivo: Evaluar la influencia del tratamiento quimioterápico en el comportamiento alimentario y en la calidad de vida de pacientes oncológicos. Método: Estudio longitudinal y observacional, realizado de junio a octubre de 2018, en el Hospital Universitario de la Universidad Federal de Piauí. Los datos fueron obtenidos en dos momentos: T0, socioeconómicos, demográficos, clínicos, de comportamiento alimentario y calidad de vida y T1, de comportamiento alimentario y calidad de vida. Se utilizaron las pruebas: Shapiro-Wilk, t-Student y Wilcoxon; Pearson y Spearman, con p <0,05. Resultados: De los 17 pacientes, la mayoría eran mujeres (82,4%), promedio de 54,2 años, ingreso familiar de 1 a 2 salarios mínimos (64,7%) y de etnia parda (76,5%). El cáncer más frecuente fue el de mama (52,9%). Se observaron aversiones alimentarias en T1, para algunos grupos de alimentos. Se observó una diferencia significativa em la calidad de vida en cuanto a la medida global de salud (p=0,001) y dificultad financiera (p=0,026), así como las correlaciones entre calidad de vida y comportamiento alimentario. Conclusión: Los resultados refuerzan la necesidad de constante monitoreo nutricional desde el inicio del tratamiento quimioterápico con el fin de evitar y/o reducir lãs repercusiones negativas de este en el estado nutricional y en calidad de vida. Además, la realización de más estúdios com muestra e intervalo de tempo mayor, son necesarios.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Feeding Behavior/drug effects , Neoplasms/drug therapy , Quality of Life , Neoplasms/complications
3.
Braz. J. Pharm. Sci. (Online) ; 53(3): e00251, 2017. tab, graf
Article in English | LILACS | ID: biblio-889402

ABSTRACT

ABSTRACT The triterpene lupeol (1) and some of its esters are secondary metabolites produced by species of Celastraceae family, which have being associated with cytotoxic activity. We report herein the isolation of 1, the semi-synthesis of eight lupeol esters and the evaluation of their in vitro activity against nine strains of cancer cells. The reaction of carboxylic acids with 1 and DIC/DMAP was used to obtain lupeol stearate (2), lupeol palmitate (3) lupeol miristate (4), and the new esters lupeol laurate (5), lupeol caprate (6), lupeol caprilate (7), lupeol caproate (8) and lupeol 3',4'-dimethoxybenzoate (9), with high yields. Compounds 1-9 were identified using FT-IR, 1H, 13C-NMR, CHN analysis and XRD data and were tested in vitro for proliferation of human cancer cell activity. In these assays, lupeol was inactive (GI50> 250µg/mL) while lupeol esters 2 -4 and 7 - 9 showed a cytostatic effect. The XRD method was a suitable tool to determine the structure of lupeol and its esters in solid state. Compound 3 showed a selective growth inhibition effect on erythromyeloblastoid leukemia (K-562) cells in a concentration-dependent way. Lupeol esters 4 and 9 showed a selective cytostatic effect with low GI50 values representing promising prototypes for the development of new anticancer drugs.


Subject(s)
Triterpenes/analysis , Celastraceae/classification , Biological Products , Chemoprevention/statistics & numerical data
4.
Pesqui. vet. bras ; 33(5): 581-585, maio 2013. tab
Article in Portuguese | LILACS | ID: lil-678335

ABSTRACT

O objetivo do estudo foi conhecer a prevalência sorológica de Toxoplasma gondii em búfalos (Bubalus bubalis) do Estado do Pará, Brasil. Foram selecionados randomicamente 319 bubalinos distribuídos em sete municípios da Ilha do Marajó. Para efeito comparativo também foram avaliados 128 bubalinos pertencentes a cinco municípios do Estado do Pará. A prevalência sorológica de Toxoplasma gondii foi avaliada pelo Ensaio de Imunoadsorção Enzimático Indireto (iELISA). As amostras diagnósticadas como positivas no iELISA foram submetidas a Reação de Imunofluorescência Indireta (RIFI). Foram avaliados os fatores de risco: localidade, raça, gestação, co-infecção por Brucella abortus e co-infecção por Mycobacterium bovis. As frequências de animais positivos no iELISA para T. gondii foram comparadas pelo teste de Qui-quadrado (χ2) com 95% de confiabilidade. As variáveis com p<0,2 foram submetidos à análise de regressão logística, sendo o modelo construído baseado no teste da "odds ratios". A prevalência de T. gondii observada no iELISA foi de 41,6% (186/447). Na RIFI, 86,5% (161/186) das amostram positivas no iELISA tiveram sua positividade para T. gondii confirmada. A prevalência média nos municípios da Ilha do Marajo e do Continente foi de 32% (103/319) e 55% (70/128), respectivamente. Os municípios que apresentaram as maiores prevalências foram Soure (53%) e Salvaterra (49%) na Ilha do Marajó e Castanhal (55%) e Tailândia (50%) no Continente. Os fatores de risco raça e co-infecção por Brucella abortus ou Mycobacterium bovis não influenciaram na prevalência de T. gondii. Além disso, animais gestantes foram 57% mais positivos para T. gondii do que animais não gestantes. A circulação de anticorpos é um indicativo da presença do agente da toxoplasmose em búfalos no Estado do Pará. Esses achados representam um risco não apenas para os animais de produção, mas à saúde pública, como uma fonte de infecção.


The aim was to study the seroprevalence of Toxoplasma gondii in water buffaloes (Bubalus bubalis) from State of Pará, Brazil. Three hundred and nineteen buffaloes were randomly selected into seven municipalities of Marajó Island. For comparative purposes, 128 buffaloes of five municipalities in the state of Pará were also evaluated. The seroprevalence of T. gondii was evaluated by Indirect Enzyme Linked Immunosorbent Assay (iELISA). The samples diagnosed as positive in iELISA were subjected to Immunofluorescence Antibody Test (IFAT). We evaluated risk factors: location, breed, pregnancy and co-infection with Brucella abortus or Mycobacterium bovis. The frequency of animals positive for T. gondii in iELISA were compared by chi-square (χ2) with 95% confidence. Variables with p <0.2 were subjected to logistic regression analysis; the model was built based on the "odds ratios" test. The prevalence of T. gondii in iELISA was 41,6% (186/447). In IFAT, 86,5% (161/186) had their positivity for T. gondii confirmed. The average prevalence in the municipalities of the Marajó Island and of the mainland was 32% (103/319) and 55% (70/128), respectively. The municipalities with the highest prevalence were Soure (53%) and Salvaterra (49%) in Marajó Island, and Castanhal (55%) and Thailândia (50%) in the Continent. The breed and co-infection with Brucella abortus or Mycobacterium bovis presented no influence on the prevalence of T. gondii. Additionally, pregnant animals were 57% more positive for T. gondii than nonpregnant animals. The presence of antibodies is an indicative of T. gondii in buffaloes in the state of Pará, and these findings represent a risk not only for farm animals, but to public health as a source of infection.


Subject(s)
Animals , Cattle , Cattle/parasitology , Enzyme-Linked Immunosorbent Assay/veterinary , Fluorescent Antibody Technique, Indirect/veterinary , Toxoplasma/isolation & purification , Epidemiologic Studies
5.
Arq. bras. med. vet. zootec ; 64(6): 1747-1754, Dec. 2012. tab
Article in Portuguese | LILACS | ID: lil-660248

ABSTRACT

Estudou-se a suplementação de dietas de cordeiros confinados com resíduo de biodiesel, utilizando-se 25 ovinos, SRD, machos, castrados, com média de peso de 20kg. O delineamento experimental foi de blocos ao acaso, com cinco repetições por tratamento e esquema de parcelas subdivididas para os dados de biometria. O experimento teve a duração de 70 dias. As dietas eram compostas de 34% de volumoso e 61% de concentrado, à base de milho, soja, minerais e 5% de óleo de dendê ou resíduo de biodiesel, em percentagens crescentes - zero, 25, 50, 75 e 100%. Os animais foram abatidos ao final do experimento para avaliação da carcaça. Foram observados efeitos significativos (P<0,05) de percentagem de inclusão do resíduo, para as variáveis de desempenho e biometria demonstrados nos efeitos lineares crescentes das equações de regressão, assim como para peso da carcaça quente (PCQ) -, com médias de 14; 15,92; 16,14; 16,42 e 18,02% - e peso da carcaça fria (PCF) -, com médias de 13,12; 14,78; 15,06; 15,70 e 17,25% -, para dietas com, respectivamente, 0, 25, 50, 100% de resíduo de biodiesel de dendê. A utilização de resíduo de biodiesel de dendê na alimentação de cordeiros em crescimento é alternativa para aumentar a densidade energética de suas dietas.


Diet supplementation with biodiesel residues of confined lambs, utilizing 25 sheep, without definite breed pattern (WDB), male, castrated, with average weight of 20kg was studied. The experimental design was random blocks, with 5 repetitions per treatment and a split plot scheme toward biometrics data. The experiment lasted 70 days. The diets were composed of 34% of roughage and 61% of concentrate, based on corn, soy, mineral and 5% of oil palm kernel or biodiesel residues, in increasing percentages - zero, 25, 50, 75 and 100%. The animals were slaughtered at the end of the experiment for carcass evaluation. Significant effects (P<0.05) of percentage inclusion of residues were observed for the performance and biometrics variables demonstrated in the crescent linear effect of the regression equations, as well as for the hot carcass weight (HCW) - with an average of 14; 15.92; 16.14; 16.42 and 18.02%; and the cold carcass weight (CCW) - with an average of 13.12; 14.78; 15.06; 15.70 and 17.25% for diets, respectively, containing 0, 25, 50, 75, 100% of palm kernel biodiesel residues. The palm kernel biodiesel residue utilization in feeding growing lambs is an alternative to increase the energetic density in their diets.


Subject(s)
Animals , Sheep/growth & development , Animal Feed/analysis , Dietary Supplements/analysis , Diet/veterinary , Ruminants , Waste Products/analysis , Waste Products/adverse effects
6.
Pesqui. vet. bras ; 31(2): 117-120, Feb. 2011. ilus
Article in Portuguese | LILACS | ID: lil-578904

ABSTRACT

Foi estudada uma doença em 159 ovinos em 15 propriedades localizadas em sete municípios das mesorregiões nordeste e sudeste do estado do Pará e uma em um município do estado de Roraima. Os ovinos da raça Santa Inês e seus mestiços, de ambos os sexos e com dois a quatro anos de idade, eram os mais acometidos. A doença caracterizava-se por alopecia em diversas regiões do corpo, principalmente ao redor dos olhos; essas lesões evoluíam para eritemas multifocais, pequenas pápulas e crostas. Os animais apresentavam prurido intenso no local das lesões, inquietação, perda de peso e corrimento ocular. Sempre era observada a presença de mosquitos ao redor dos animais. Com o auxílio de um puçá foi realizada a captura de insetos associados às lesões, durante o repasto nos ovinos, para a identificação. Foram identificados insetos dos gêneros Simulium e Hippelates. Realizou-se biópsia da pele lesada de 10 ovinos. As lesões histológicas se caracterizaram por leves infiltrados inflamatórios mononucleares na derme, com presença de eosinófilos. Os estudos epidemiológicos, clínicos e patológicos desses casos, bem como o descarte dos diagnósticos diferenciais, permitiram concluir que se trata de dermatite alérgica por picada de insetos.


A skin disease was studied in 159 sheep on 15 farms located in seven counties of northeastern and southeastern of the state of Pará and in one farm in the state of Roraima, Brazil. The disease affected mainly two to four year-old sheep of the Santa Ines breed and crossbreds. Clinical signs were characterized by alopecia, multifocal erythema, small papules, and crusts in several areas of the body, mainly around the eyes. Severe itching in the affected areas, restless, weight loss and lacrimation were also observed. Insects were always seen around the animals. Insects apparently associated with the lesions were captured and identified as pertaining to the genera Simulium and Hippelates. Biopsies of the skin lesions of 10 sheep revealed inflammatory non suppurative mononuclear infiltrates of the dermis with presence of eosinophils. The epidemiologic, clinical and pathological studies of the cases allowed the diagnosis of allergic dermatitis due to the insect bites.


Subject(s)
Animals , Dermatitis, Allergic Contact , Sheep
7.
Ciênc. rural ; 39(4): 1180-1186, jul. 2009. tab
Article in Portuguese | LILACS | ID: lil-519122

ABSTRACT

O objetivo do estudo foi avaliar o desempenho e as características da carcaça e da carne de novilhos nãocastrados alimentados com ou sem adição de monensina (M) e/ou probiótico (P) (Sacharomyces cerevisiae) à dieta. Os animais foram distribuídos em baias individuais, permanecendo 145 dias em confinamento. A dieta foi composta de silagem de milho e 1,2% do peso vivo de concentrado com base da matéria natural. Não houve efeito da adição dos aditivos fornecidos de forma isolada ou mesmo da associação destes sobre o consumo de alimento, o ganho de peso e a conversão alimentar. As médias de consumo, ganho de peso e conversãoalimentar apresentaram comportamento quadrático com o avanço do período de confinamento. Embora a adição de Mou P à dieta tenha resultado no aumento numérico (P>0,05) do consumo (4,2%), a média de ganho de peso reduziu (5,8 e 5,3%, respectivamente), resultando em pior conversão alimentar (P>0,05). Já a associação de M+P aumentou (P>0,05) o consumo em 9,5%, com concomitante aumento (P>0,05) do ganho de peso (6,4%) em relação à dieta controle. Os animais alimentados com M+P apresentaram melhor acabamento de carcaça (5,5mm), seguidos por aqueles do grupo controle (4,7mm), sendo os valores inferiores verificados nas carcaças dos animais M (3,7mm) e P (3,5mm). A adição de monensina e/ou probiótico (Sacharomyces cerevisiae) na dieta de novilhos na fase de terminação em confinamento não proporciona melhora no desempenho e nas características dacarcaça e da carne de novilhos.


The objective of this experiment was to evaluate the performance, carcass and meat characteristics of noncastratedcattle with or without monensin (M) and/or probiotic (P) (Saccharomyces cerevisiae) to the diet. The animals weredivided into individual stalls, being left 145 days in feedlot. The roughage used was corn silage + 1.2% of the weight live of concentrate in natural matter basis. There was no effect of the addition of the addictives supplied isolated or associated over feed intake, weight gain and fed conversion. Feed intake, weight gain and feed conversion averages presented quadratic behaviorwith the increase of the period feedlot. Although the addition of M or P to the diet resulted in the numeric increase (P>.05) of the intake (4.2%) the average of weight gain reduced (5.8 and5.3%, respectively), resulting in smaller fed conversion (P>.05). The association of M+P already increased (P>.05) the food intake to the order of 9.5% with concomitant increase (P>.05) of the weight gain (6,4%) when compared to diet control. The animals fed with M+P presented better carcass finish (5.5mm),followed by the control (4.7mm), and smaller values, it was verified in the carcasses of the animals that received M (3.7mm) and P (3.5mm). The addition of monensin and/or probiotic for feedlot steers did not improve the performance, carcass and meat quality.

8.
Braz. j. med. biol. res ; 36(10): 1283-1288, Oct. 2003. ilus, tab
Article in English | LILACS | ID: lil-346480

ABSTRACT

ßS-Globin haplotypes were studied in 80 (160 ßS chromosomes) sickle cell disease patients from Salvador, Brazil, a city with a large population of African origin resulting from the slave trade from Western Africa, mainly from the Bay of Benin. Hematological and hemoglobin analyses were carried out by standard methods. The ßS-haplotypes were determined by PCR and dot-blot techniques. A total of 77 (48.1 percent) chromosomes were characterized as Central African Republic (CAR) haplotype, 73 (45.6 percent) as Benin (BEN), 1 (0.63 percent) as Senegal (SEN), and 9 (5.63 percent) as atypical (Atp). Genotype was CAR/CAR in 17 (21.3 percent) patients, BEN/BEN in 17 (21.3 percent), CAR/BEN in 37 (46.3 percent), BEN/SEN in 1 (1.25 percent), BEN/Atp in 1 (1.25 percent), CAR/Atp in 6 (7.5 percent), and Atp/Atp in 1 (1.25 percent). Hemoglobin concentrations and hematocrit values did not differ among genotype groups but were significantly higher in 25 patients presenting percent fetal hemoglobin ( percentHbF) > or = 10 percent (P = 0.002 and 0.003, respectively). The median HbF concentration was 7.54 ± 4.342 percent for the CAR/CAR genotype, 9.88 ± 3.558 percent for the BEN/BEN genotype, 8.146 ± 4.631 percent for the CAR/BEN genotype, and 4.180 ± 2.250 percent for the CAR/Atp genotype (P = 0.02), although 1 CAR/CAR individual presented an HbF concentration as high as 15 percent. In view of the ethnic and geographical origin of this population, we did not expect a Hardy-Weinberg equilibrium for CAR/CAR and BEN/BEN homozygous haplotypes and a high proportion of heterozygous CAR/BEN haplotypes since the State of Bahia historically received more slaves from Western Africa than from Central Africa


Subject(s)
Humans , Male , Female , Anemia, Sickle Cell , Fetal Hemoglobin , Globins , Haplotypes , Anemia, Sickle Cell , Benin , Brazil , Central African Republic , Fetal Hemoglobin , Genotype , Immunoblotting , Polymerase Chain Reaction , Senegal
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