RESUMEN
Heat stress during lactation affects the physiological responses, hormonal release, health, and productivity of dairy cows. However, the adverse effects of heat stress on milk synthesis, immune response, and cellular apoptosis in mammary cells remains unknown in Bos indicus cows. This study aimed to understand the relationship between milk yield, milk quality, and the expression of genes related to milk synthesis, cell apoptosis, and immune response in mammary cells of Girolando cows. Twenty-four Girolando cows (3/4 Holstein and 1/4 Gir) were subjected to control (CT, with a temperature-humidity index ranging from 60 to 74, n = 12) or heat stress treatments (HS, with a temperature- humidity index ranging from 60 to 85, n = 12), from 111 to 120 d of lactation. Heat stress significantly increased the expression of heat shock proteins (HSPD1 and HSPD90AA1), insulin receptors (INSR), and prolactin receptors (PRLRsf) genes, and decreased the expression of glucocorticoid receptor (NR3C1) gene in mammary cells of the HS cows when compared with the CT cows. The HS cows exhibited significantly higher vaginal temperatures and cortisol release compared with the CT cows. Moreover, the HS cows had significantly lower dry matter intake and milk yield than CT cows. Although, HS cows showed higher percentage of lymphocytes in milk when compared with that from CT cows. There was no effect of heat stress on other leukocyte counts, somatic cell counts, bacterial counts in milk, or milk composition. Finally, this study demonstrated that Girolando cows are susceptible to heat stress, which decreases milk yield and affects the expression of genes linked to milk synthesis in the mammary cells.
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INTRODUCTION: Trabecular bone score (TBS) estimates bone microstructure, which is directly measured by high-resolution peripheral quantitative computed tomography (HRpQCT). We evaluated the correlation between these methods and TBS influence on fracture risk assessed by FRAX. MATERIALS AND METHODS: We evaluated 129 individuals (82 women, 43 postmenopausal) 20 to 82.3 years without prevalent clinical or non-clinical morphometric vertebral fractures, using DXA (spine and hip), HR-pQCT at distal radius (R) and tibia (T) and TBS which classifies bone microarchitecture as normal (TBS ≥ 1.350), partially degraded (1.200 < TBS < 1.350), or degraded (TBS ≤ 1.200). RESULTS: Spine and hip BMD and HR-pQCT parameters at cortical bone: area (T), density (R,T) thickness (T) and trabecular bone: density (R,T), number (T) and thickness (R) were significantly better in the 78 individuals with normal TBS (group 1) versus the 51 classified as partially degraded (n = 42) or degraded microarchitecture (n = 9) altogether (group 2). TBS values correlated with age (r = - 0.55), positively with spine and hip BMD and all cortical and trabecular bone density and microstructure parameters evaluated, p < 0.05 all tests. Binary logistic regression defined age (p = 0.008) and cortical thickness (p = 0.018) as main influences on TBS, while ANCOVA demonstrated that HR-pQCT data corrected for age were not different between TBS groups 1 and 2. TBS adjustment increased FRAX risk for major osteoporotic fractures and hip fractures. CONCLUSION: We describe significant association between TBS and both trabecular and cortical bone parameters measured by HR-pQCT, consistent with TBS influence on fracture risk estimation by FRAX, including hip fractures, where cortical bone predominates.
Asunto(s)
Densidad Ósea , Hueso Esponjoso , Hueso Cortical , Tomografía Computarizada por Rayos X , Humanos , Femenino , Anciano , Persona de Mediana Edad , Hueso Cortical/diagnóstico por imagen , Hueso Esponjoso/diagnóstico por imagen , Masculino , Anciano de 80 o más Años , Adulto , Absorciometría de Fotón , Adulto JovenRESUMEN
OBJECTIVES: To evaluate the volume and depth of enamel loss promoted by 37.5% and 7.5% hydrogen peroxide (HP) gels, and quantify the loss of calcium (Ca) and phosphate (P) ions by using ion chromatography (IC) analysis after bleaching. METHODS: Sixty bovine enamel specimens were randomly divided into three groups: Control - no bleaching gel; HP37.5%, application of HP 37.5% for 45 minutes for 14 days; and HP7.5%, application of HP 7.5% for 3 applications of 8 minutes. The surface analysis (n=5) was performed using a scanning electron microscope (SEM) and dispersive energy system (EDS) to calcium and phosphorus dosage. The micro-CT was used for the enamel loss analysis (n=5). IC was used to analyze extracted Ca and P (n=10). Data were analyzed by one-way ANOVA and two-way repeated measures ANOVA, followed by Tukey and Dunnett's tests (α=0.05). RESULTS: Significantly higher volume and depth of enamel loss were found for bleached groups compared with the control group. HP7.5% had significantly higher enamel change than HP37.5%. SEM showed higher enamel porosity for HP37.5% and HP7.5% compared to control. The IC demonstrated a significant increase of Ca incorporated into the gel, however, only HP7.5% had a higher P presence than the control group. The HP7.5% showed higher Ca and P ion exchange than HP37.5% (p<0.001). CONCLUSION: HP37.5% and HP7.5%, caused enamel mineral changes compared with the control group. The IC method was demonstrated to be an effective methodology for detecting enamel mineral loss by the bleaching gel.
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Blanqueadores Dentales , Blanqueamiento de Dientes , Animales , Bovinos , Calcio , Blanqueamiento de Dientes/métodos , Esmalte Dental , Microtomografía por Rayos X , Peróxido de Hidrógeno/química , Minerales , Fosfatos , GelesRESUMEN
Red pitaya (Hylocereus costaricensis) is a promising species, with high cultivation potential due to the organoleptic and functional qualities of its fruits. However, irrigation water salinity can affect the crop yield. Therefore, materials rich in organic substances can minimize the damage caused by excess salts in soil and/or water. Thus, the objective of this study was to evaluate the influence of organic matter sources as attenuators of salt stress on the production and biochemical responses of red pitaya seedlings. A completely randomized design in 4 × 5 factorial scheme, with five sources of organic matter (humus, sheep manure, biofertilizer, organic compost and sand + soil) and four salinities (0.6, 2.6, 4.6 and 6.6 dS m-1) with four replicates and two plants per plot was used. The shoot length, root length, cladode diameter, number of cladodes, number of sprotus, root volume, shoot dry mass, root dry mass and total dry mass, root and shoot dry mass ratio, chlorophyll a, b and total, amino acids and soluble sugars were evaluated at 120 days after the treatments began to be applied. Red pitaya is moderately tolerant to salinity (ECw from 4.0 to 6.0 dS m-1). Organic compost and sheep manure attenuate the harmful effects of salinity on red pitaya seedlings. Under salt stress conditions, red pitaya plants increase their levels of proline, amino acids and total sugars.
A pitaia vermelha (Hylocereus costaricensis) é uma promissora espécie, com elevado potencial de cultivo devido às qualidades organolépticas e funcionais de seus frutos. Entretanto, a salinidade da água de irrigação pode afetar o rendimento produtivo da cultura. Diante disso, materiais ricos em substâncias orgânicas podem minimizar os danos provocados pelo excesso de sais no solo e/ou na água. Assim, o objetivo deste trabalho foi avaliar a influência de fontes de matéria orgânica como atenuante do estresse salino na produção e respostas bioquímicas de mudas de pitaia vermelha. O delineamento inteiramente casualizado em esquema fatorial 4 × 5, com cinco fontes de matéria orgânica (húmus, esterco ovino, biofertilizante, composto orgânico e areia + solo) e quatro salinidade (0.6, 2.6, 4.6 e 6.6 dS m-1), com quatro repetições e duas plantas por vaso foi utilizado. O comprimento da parte aérea, comprimento da raiz, diâmetro do cladódio, número de cladódios, número de brotos, volume da raiz, massa seca da parte aérea, massa seca da raiz e massa seca total, razão da massa seca da raiz e da parte aérea, clorofila a, b e total, aminoácidos e os açúcares solúveis foram avaliados aos 120 dias após o início da aplicação dos tratamentos. A pitaia vermelha é moderadamente tolerante a salinidade. O composto orgânico e estrume ovino atenuam os efeitos nocivos da salinidade nas mudas de pitaia vermelha. Sob condições de estresse salino, as plantas aumentam os níveis de aminoácidos e açúcares totais.
Asunto(s)
Compuestos Orgánicos , Cactaceae/crecimiento & desarrollo , Cactaceae/metabolismo , Fertilizantes , Estrés SalinoRESUMEN
This study aimed to describe the epidemiological indexes of mastitis, milk quality and udder hygiene in the Compost Barn system, as well as to search for associations between isolated pathogens from milk with compost characteristics. Three dairy herds participated in the study, and the samples were collected during different periods on each farm. Individual milk samples were collected in duplicate for SCC analysis and microbiological culture. Environmental pathogens caused most cases of clinical mastitis on farm 2, and contagious pathogens caused the most cases on farm 1. Bed moisture was not associated with the incidence of environmental pathogens. Most of the animals remained in good udder hygiene during the study. Poor udder hygiene contributed to the increased incidence of environmental pathogens in one of the farms. A higher number of animals with a hygiene score of ≥ 2 were observed during the warmer and rainfall periods. There was no association between hygiene scores and somatic cell counts. The results suggest that pathogens isolated from milk in animals confined in Compost Barn under tropical climate are like other confinement systems adopted elsewhere. The year period influenced the udder hygiene score, reinforcing the importance of bed management throughout the year.
O objetivo deste estudo foi descrever os índices epidemiológicos da mastite, da qualidade do leite e da higiene do úbere em animais confinados no sistema Compost Barn, bem como buscar associações entre patógenos isolados do leite e características do composto. Três rebanhos leiteiros participaram do estudo e as amostras foram coletadas em diferentes períodos em cada fazenda. Amostras individuais de leite foram coletadas em duplicata para análise de CCS e cultura microbiológica. Patógenos ambientais causaram a maioria dos casos de mastite clínica na fazenda 2, e na fazenda 1 a maioria dos casos foi em decorrência de patógenos contagiosos. Amostras de material da cama foram coletadas em duas fazendas para análise da densidade bacteriana e da umidade. A umidade da cama permaneceu dentro da faixa de controle durante o estudo e não foi associada à incidência de patógenos ambientais. A maioria dos animais permaneceu com boa higiene de úbere durante o estudo. A falta de higiene do úbere contribuiu para o aumento da incidência de patógenos ambientais em uma das fazendas. Durante o período mais quente e mais chuvoso, um número maior de animais com escore de sujidade ≥2 foi observado em todos os rebanhos. Não houve associação entre escore de sujidade e contagem de células somáticas em qualquer uma das três fazendas. Os resultados indicam que o perfil de patógenos isolados do leite em animais confinados em Compost Barn sob clima tropical é semelhante a outros sistemas de confinamento adotados em outros lugares. O período do ano influenciou o escore de higiene do úbere, o que reforça a importância do manejo da cama ao longo do ano.
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Animales , Femenino , Bovinos , Leche/microbiología , Crianza de Animales Domésticos/métodos , Glándulas Mamarias Animales/microbiología , Mastitis Bovina/epidemiología , CompostajeRESUMEN
Red pitaya (Hylocereus costaricensis) is a promising species, with high cultivation potential due to the organoleptic and functional qualities of its fruits. However, irrigation water salinity can affect the crop yield. Therefore, materials rich in organic substances can minimize the damage caused by excess salts in soil and/or water. Thus, the objective of this study was to evaluate the influence of organic matter sources as attenuators of salt stress on the production and biochemical responses of red pitaya seedlings. A completely randomized design in 4 × 5 factorial scheme, with five sources of organic matter (humus, sheep manure, biofertilizer, organic compost and sand + soil) and four salinities (0.6, 2.6, 4.6 and 6.6 dS m-1) with four replicates and two plants per plot was used. The shoot length, root length, cladode diameter, number of cladodes, number of sprotus, root volume, shoot dry mass, root dry mass and total dry mass, root and shoot dry mass ratio, chlorophyll a, b and total, amino acids and soluble sugars were evaluated at 120 days after the treatments began to be applied. Red pitaya is moderately tolerant to salinity (ECw from 4.0 to 6.0 dS m-1). Organic compost and sheep manure attenuate the harmful effects of salinity on red pitaya seedlings. Under salt stress conditions, red pitaya plants increase their levels of proline, amino acids and total sugars.
Asunto(s)
Cactaceae , Plantones , Animales , Aminoácidos/metabolismo , Aminoácidos/farmacología , Cactaceae/química , Cactaceae/metabolismo , Clorofila A/metabolismo , Clorofila A/farmacología , Fertilización , Estiércol , Salinidad , Estrés Salino , Ovinos , Suelo/química , Azúcares/metabolismo , Agua/metabolismoRESUMEN
OBJECTIVES: The aim of this study was to evaluate the mineral content, expressed by calcium (Ca) and phosphate (P), in dental enamel exposed to bleaching agents using micro-computed tomography (micro-CT), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and atomic force microscopy (AFM). METHODS: Sixty bovine dental enamel specimens were randomly divided into three groups (n=20): HP35ca (bleached using 35% hydrogen peroxide with Ca); HP35wca (bleached using 35% hydrogen peroxide without Ca); and control (without bleaching). Five specimens from each group were used for SEM and EDS analyses, 10 specimens were used for AFM analysis, and the remaining five specimens were used for micro-CT analysis. The pH of the gels was measured using a pH meter. The EDS and micro-CT data were analyzed using one-way ANOVA and Pearson's correlation test. The AFM data were analyzed using one-way ANOVA (α=0.05). RESULTS: The weight percentages of Ca and P obtained using EDS were similar between the bleached and control groups. Small, superficial changes were observed by SEM in the HP35wca group. The HP35ca group showed similar patterns to the control group. AFM results showed no significant changes in the enamel roughness in any of the tested groups. No significant difference in the volume or depth of structural enamel loss was found between gels with and without Ca. No mineral loss was observed in the dentin substrate. The EDS and micro-CT analysis data exhibited a high correlation (p<0.001). CONCLUSION: The addition of Ca to the bleaching gel had no beneficial effect on the bleached tooth enamel in terms of composition, mineral loss, and surface roughness. Micro-CT results exhibited a high correlation with the EDS results.
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Calcio , Esmalte Dental , Microscopía , Espectrometría por Rayos X , Blanqueadores Dentales , Microtomografía por Rayos X , Animales , Calcio/análisis , Calcio/química , Bovinos , Esmalte Dental/química , Esmalte Dental/efectos de los fármacos , Geles/química , Peróxido de Hidrógeno/química , Peróxido de Hidrógeno/farmacología , Microscopía/métodos , Microscopía de Fuerza Atómica , Microscopía Electrónica de Rastreo , Fosfatos/análisis , Distribución Aleatoria , Blanqueamiento de Dientes/métodos , Blanqueadores Dentales/química , Blanqueadores Dentales/farmacologíaRESUMEN
PURPOSE: Data on endothelial derangements in patients with non-functioning adrenal incidentaloma (NFAI) are scarce. METHODS: We investigated if NFAI patients present clinical, biochemical and endothelial alterations compared to individuals without an adrenal lesion and also the associations among these variables. Forty-two NFAI and 40 controls were evaluated. NFAI diagnosis and controls were defined according to the current guidelines and based on a normal adrenal imaging exam, respectively. Body composition was evaluated by dual emission X-ray absorptiometry. Endothelial reactivity was assessed by two methods: tonometry (Endo-PAT®) and laser speckle contrast imaging (LSCI). RESULTS: There were no differences between groups regarding age, gender, ethnicity, smoking status, and statin use. The frequency of metabolic syndrome according to the International Diabetes Federation criteria was 69% and 57.9%, respectively in NFAI and controls (p = 0.36), whereas the atherosclerotic cardiovascular disease (ASCVD) risk was 63.4% and 66.7% (p = 0.81). The clinical, laboratory, and anthropometric characteristics, as well as body composition, were similar between the groups. Additionally, any differences between groups were observed on endothelial reactivity tests. Nevertheless, we noted an association between cortisol levels after 1 mg-dexamethosone suppression test (1 mg-DST) and the duration of post-occlusive reactive hyperemia tested on microcirculation (r = 0.30; p = 0.03). NFAI patients require more antihypertensive drugs to achieve blood pressure control (p = 0.04). The number of antihypertensive drugs used to control blood pressure correlated with cortisol levels after 1 mg-DST (r = 0.29; p = 0.03). CONCLUSIONS: Since both groups herein investigated had a high frequency of metabolic syndrome and ASCVD risk, it might explain similarities observed on endothelial reactivity. Nevertheless, prolonged reactive hyperemia response on microcirculation was correlated with cortisol levels under suppression.
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Neoplasias de las Glándulas Suprarrenales/complicaciones , Biomarcadores/sangre , Enfermedades Cardiovasculares/diagnóstico , Dexametasona/antagonistas & inhibidores , Hidrocortisona/sangre , Hiperemia/diagnóstico , Síndrome Metabólico/diagnóstico , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/etiología , Estudios de Casos y Controles , Estudios Transversales , Femenino , Estudios de Seguimiento , Humanos , Hiperemia/sangre , Hiperemia/etiología , Masculino , Síndrome Metabólico/sangre , Síndrome Metabólico/etiología , Persona de Mediana Edad , PronósticoRESUMEN
Este estudo teve como objetivo avaliar biomarcadores de mastite após terapia da secagem com plasma rico em plaquetas (PRP), associado ou não a antibiótico. Trinta e seis quartos mamários foram utilizados em três tratamentos (T): T1 - antibiótico (ATB), T2 - PRP e T3 - PRP + ATB. Amostras de leite foram coletadas antes da secagem (A1), no parto (D0) e 14, 30 e 60 dias pós-parto (D14, D30 e D60), para determinar contagem de células somáticas (CCS) e amiloide A (AA). O delineamento foi inteiramente ao acaso, com arranjo em parcelas subdivididas (SigmaPlot®). Dados de CCS foram transformados (log 10). As médias foram comparadas utilizando-se testes de Tukey ou Holm-Sidak (P<0,05). A CCS em A1 foi elevada em todos os grupos (P>0,05). No D30, CCS foi maior em T2 (P<0,05), igualando-se no D60. Não houve diferença na AA entre Ts em qualquer dia de coleta (P>0,05). Houve diferença nos momentos de coleta (P<0,05), A1 maior que D14 e D30. Houve uma correlação positiva fraca com CCS (0,280). Os tratamentos foram semelhantes em manter a saúde da glândula mamária na lactação subsequente. O PRP intramamário pode ser usado para terapia de vaca seca em casos de mastite subclínica.(AU)
This study aimed to evaluate biomarkers of mastitis after autologous platelet rich plasma (PRP) dry cow therapy, associated or not with antibiotic, compared to conventional treatment. Thirty-six mammary quarters were used in three treatments (T): T1 - antibiotic, T2 - PRP and T3 - PRP + ATB. Milk samples were collected before drying (A1), on calving (D0) and at 14, 30 and 60 days postpartum (D14, D30 and D60), for Somatic Cell Count (CCS) and amyloid dosage A (AA). The design was completely randomized with arrangement in subdivided plots (SigmaPlot ®). Data from CCS were transformed in log10. Means were compared using the Tukey or Holm-Sidak tests, at a 95% confidence level (P<0.05). CCS in A1 was elevated in allgroups (P>0.05). On D30 CCS was higher in T2 (P<0.05), matching D60. There was no difference in AA among T on any day of collection (P>0.05). There was difference in collection moments (P<0.05), A1 different from D14 and D30. There was a weak positive correlation with CCS (0.280). Three treatments were similar in maintaining the health of the mammary gland at subsequent lactation. PRP intramammary can be used for dry cow therapy in subclinical mastitis.(AU)
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Animales , Femenino , Bovinos , Leche/química , Plasma Rico en Plaquetas , Amiloide/análisis , Mastitis Bovina/diagnóstico , BiomarcadoresRESUMEN
Abstract The Brazilian Cerrado has several botanical species for medicinal purposes used by traditional communities and many of these plants are not included in the list of Medicinal Plants Research Program of Central Medicines. The purpose of this study was the phytochemical screening and toxicology bioassay front of Brine shrimp L. of ethanolic extracts of eight species of plants used in folk medicine of Campo Grande, Mato Grosso do Sul, Brazil. The ethanolic extracts were submitted to phytochemical screening, determination of phenolic compounds and flavonoids. Toxicological assays were carried front of Brine shrimp according to standard methodology. The analysis TLC and HPLC-DAD confirmed the predominance of phenolic compounds and derivatives, specifically for the quercetin. The most toxic was the C. affinis DC. with death at all concentrations, the A. humile A. St. Hil. showed no mortality and the other species showed intermediate toxicity. The extracts of the investigated species are rich in phenolic compounds and derivatives, specifically quercetin, and feature toxicity between moderate to high, a fact that requires attention, since much of the traditional communities rely on herbal drugs in its raw form with preventive and curative purpose, meeting the basic health care.
Resumo O Cerrado brasileiro possui diversas espécies botânicas com fins medicinais utilizadas por comunidades tradicionais e muitas dessas plantas não estão incluídas na lista do Programa de Pesquisa de Plantas Medicinais da Central de Medicamentos. O objetivo deste estudo foi a triagem fitoquímica e o bioensaio toxicológico frente ao Brine shrimp L. de extratos etanólicos de oito espécies de plantas utilizadas na medicina popular de Campo Grande, Mato Grosso do Sul. Os extratos etanólicos foram submetidos à triagem fitoquímica, determinação de compostos fenólicos e flavonoides. Os ensaios toxicológicos foram realizados frente ao Brine shrimp de acordo com a metodologia padrão. A análise de cromatografia de camada delgada e HPLC-DAD confirmou a predominância de compostos fenólicos e derivados, especificamente para a quercetina. O mais tóxico foi o C. affinis DC. com a morte em todas as concentrações, o A. humile A. St. Hil. não apresentou mortalidade e as demais espécies apresentaram toxicidade intermediária. Os extratos das espécies investigadas são ricos em compostos fenólicos e derivados, especificamente a quercetina e apresentam toxicidade entre moderada a alta, fato que requer atenção, pois grande parte das comunidades tradicionais conta com fitoterápicos em sua forma bruta com preventivo e finalidade curativa, atendendo aos cuidados básicos de saúde.
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Plantas Medicinales , Medicina Tradicional , Brasil , Extractos Vegetales , FitoquímicosRESUMEN
PURPOSE: Acromegaly is a cause of secondary osteoporosis and is associated with increased risk of vertebral fractures (VFs). The influence of exon 3-deleted isoform of growth hormone receptor (d3-GHR) on bone microarchitecture has not been studied in acromegaly. AIM: The aim of this study was to analyze the associations between d3-GHR isoform and bone mineral density (BMD), bone microarchitecture, and VFs in acromegaly patients. METHODS: Consecutive acromegaly patients treated at a single reference center were included. BMD was analyzed using dual-energy X-ray absorptiometry (DXA) and bone microarchitecture was analyzed by high-resolution peripheral quantitative computed tomography (HR-pQCT). The presence of moderate to severe VFs was assessed by thoracic and lumbar X-ray. GHR genotyping was analyzed by PCR, and full-length isoform of GHR (fl-GHR) was represented by a 935-bp fragment and d3-GHR by a 532-bp fragment. RESULTS: Eighty-nine patients were included [56 females; median age at diagnosis: 43 years (17-78)]. Disease was uncontrolled in 63% of patients. At least one d3-GHR allele was present in 60% of patients. Frequency of active disease (p = 0.276) and hypogonadism (p = 1.000) was not different between patients with fl-GHR and those with at least one d3-GHR. There was no difference in any DXA or HR-pQCT parameters between patients with fl-GHR and those with d3-GHR. Significant VFs were observed in 14% of patients, but there was no difference in frequency between patients with fl-GHR and those with at least one d3-GHR allele (p = 0.578). CONCLUSIONS: Presence of d3-GHR was not associated with worse BMD or bone microarchitecture or with higher frequency of significant VFs.
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Acromegalia/diagnóstico por imagen , Acromegalia/genética , Densidad Ósea/genética , Exones/genética , Fracturas Óseas/diagnóstico por imagen , Fracturas Óseas/genética , Receptores de Somatotropina/genética , Absorciometría de Fotón/métodos , Acromegalia/sangre , Adolescente , Adulto , Anciano , Femenino , Fracturas Óseas/sangre , Hormona de Crecimiento Humana/sangre , Hormona de Crecimiento Humana/genética , Humanos , Masculino , Persona de Mediana Edad , Isoformas de Proteínas/sangre , Receptores de Somatotropina/sangre , Estudios Retrospectivos , Factores de Riesgo , Adulto JovenRESUMEN
The Brazilian Cerrado has several botanical species for medicinal purposes used by traditional communities and many of these plants are not included in the list of Medicinal Plants Research Program of Central Medicines. The purpose of this study was the phytochemical screening and toxicology bioassay front of Brine shrimp L. of ethanolic extracts of eight species of plants used in folk medicine of Campo Grande, Mato Grosso do Sul, Brazil. The ethanolic extracts were submitted to phytochemical screening, determination of phenolic compounds and flavonoids. Toxicological assays were carried front of Brine shrimp according to standard methodology. The analysis TLC and HPLC-DAD confirmed the predominance of phenolic compounds and derivatives, specifically for the quercetin. The most toxic was the C. affinis DC. with death at all concentrations, the A. humile A. St. Hil. showed no mortality and the other species showed intermediate toxicity. The extracts of the investigated species are rich in phenolic compounds and derivatives, specifically quercetin, and feature toxicity between moderate to high, a fact that requires attention, since much of the traditional communities rely on herbal drugs in its raw form with preventive and curative purpose, meeting the basic health care.
Asunto(s)
Medicina Tradicional , Plantas Medicinales , Brasil , Fitoquímicos , Extractos VegetalesRESUMEN
The Brazilian Cerrado has several botanical species for medicinal purposes used by traditional communities and many of these plants are not included in the list of Medicinal Plants Research Program of Central Medicines. The purpose of this study was the phytochemical screening and toxicology bioassay front of Brine shrimp L. of ethanolic extracts of eight species of plants used in folk medicine of Campo Grande, Mato Grosso do Sul, Brazil. The ethanolic extracts were submitted to phytochemical screening, determination of phenolic compounds and flavonoids. Toxicological assays were carried front of Brine shrimp according to standard methodology. The analysis TLC and HPLC-DAD confirmed the predominance of phenolic compounds and derivatives, specifically for the quercetin. The most toxic was the C. affinis DC. with death at all concentrations, the A. humile A. St. Hil. showed no mortality and the other species showed intermediate toxicity. The extracts of the investigated species are rich in phenolic compounds and derivatives, specifically quercetin, and feature toxicity between moderate to high, a fact that requires attention, since much of the traditional communities rely on herbal drugs in its raw form with preventive and curative purpose, meeting the basic health care.(AU)
O Cerrado brasileiro possui diversas espécies botânicas com fins medicinais utilizadas por comunidades tradicionais e muitas dessas plantas não estão incluídas na lista do Programa de Pesquisa de Plantas Medicinais da Central de Medicamentos. O objetivo deste estudo foi a triagem fitoquímica e o bioensaio toxicológico frente ao Brine shrimp L. de extratos etanólicos de oito espécies de plantas utilizadas na medicina popular de Campo Grande, Mato Grosso do Sul. Os extratos etanólicos foram submetidos à triagem fitoquímica, determinação de compostos fenólicos e flavonoides. Os ensaios toxicológicos foram realizados frente ao Brine shrimp de acordo com a metodologia padrão. A análise de cromatografia de camada delgada e HPLC-DAD confirmou a predominância de compostos fenólicos e derivados, especificamente para a quercetina. O mais tóxico foi o C. affinis DC. com a morte em todas as concentrações, o A. humile A. St. Hil. não apresentou mortalidade e as demais espécies apresentaram toxicidade intermediária. Os extratos das espécies investigadas são ricos em compostos fenólicos e derivados, especificamente a quercetina e apresentam toxicidade entre moderada a alta, fato que requer atenção, pois grande parte das comunidades tradicionais conta com fitoterápicos em sua forma bruta com preventivo e finalidade curativa, atendendo aos cuidados básicos de saúde.(AU)
Asunto(s)
Plantas Tóxicas/fisiología , Plantas Tóxicas/toxicidad , EtnofarmacologíaRESUMEN
INTRODUCTION: The role of vitamin D on bone microarchitecture and fragility is not clear. OBJECTIVE: To investigate whether vitamin D deficiency (25(OH)D <20 ng/mL) increases cortical bone loss and the severity of fractures. DESIGN: Cross-sectional study of 287 elderly women with at least one prevalent low-impact fracture. METHODS: Biochemistry, X-rays to identify vertebral fractures (VFs) and to confirm non-vertebral fractures (NonVFs), and high-resolution peripheral quantitative computed tomography (HR-pQCT) to evaluate bone microstructure. RESULTS: Serum 25(OH)D levels were associated with body mass index (BMI: r = -0.161, P = 0.006), PTH (r = -0.165; P = 0.005), CTX (r = -0.119; P = 0.043) and vBMD at cortical bone (Dcomp: r = 0.132; P = 0.033) and entire bone (D100: r = 0.162 P = 0.009) at the distal radius, but not at the tibia. Age and PTH levels were potential confounding variables, but in the multiple linear regressions only BMI (95% CI: 0.11-4.16; P < 0.01), 25(OH)D (95% CI: -0.007 to 1.70; P = 0.05) and CTX (95% CI: -149.04 to 21.80; P < 0.01) predicted Dcomp, while BMI (95% CI: 1.13-4.18; P < 0.01) and 25(OH)D (95% CI: 0.24-1.52; P < 0.01) predicted D100. NonVFs predominated in patients with 25(OH)D <20 ng/mL (P = 0.013). Logistic regression analysis showed a decrease in the likelihood of presenting grade 2-3 VFs/NonVFs for every increase in 25(OH)D (OR = 0.962, 95% CI: 0.940-0.984; P = 0.001), BMI (OR = 0.932, 95% CI: 0.885-0.981; P = 0.007) and D100 at radius (OR = 0.994, 95% CI: 0.990-0.998; P = 0.005). CONCLUSION: In elderly patients with prevalent fractures, vitamin D deficiency was associated with cortical bone loss and severity of fractures.
Asunto(s)
Fracturas Óseas/epidemiología , Fracturas Óseas/etiología , Osteoporosis/epidemiología , Osteoporosis/etiología , Deficiencia de Vitamina D/complicaciones , Factores de Edad , Anciano , Anciano de 80 o más Años , Índice de Masa Corporal , Estudios Transversales , Femenino , Humanos , Fracturas Osteoporóticas/epidemiología , Fracturas Osteoporóticas/etiología , Hormona Paratiroidea/sangre , Fracturas de la Columna Vertebral/epidemiología , Fracturas de la Columna Vertebral/etiologíaRESUMEN
Cardiovascular diseases (CVDs) have shown a high prevalence every year, presenting arterial hypertension as prime factor for their development, also driven by population growth, the aging of population and epidemiologic changes in disease. One of the main challenges in the study of CVD is the identification of reliable biomarkers that can be used in clinical practice and, in this context, microRNAs (miRNAs) have attracted much attention recently. MiRNAs are small non-coding RNAs, identified as post-transcriptional regulators of the expression of several genes both in physiologic and pathologic conditions. They have been studied as possible biomarkers, since they are highly expressed in the vascular system and are crucial modulators for the differentiation, contraction, migration and apoptosis of vascular cells, so modifications in their expression can cause several vascular alterations. Thus, this review aimed to compile the main studies regarding the role of miRNAs in the development of cardiac diseases, their potential applicability in the diagnosis, prognosis and treatment of these disorders. It was possible to verify that alterations in miRNAs expression are present in almost all cardiovascular diseases, such as the development of cardiac hypertrophy, coronary heart disease, heart failure and other conditions. Furthermore, growing evidence indicates that circulating miRNAs may become a potential tool for rapid and easy tests, since they are detected in peripheral blood, also allowing new therapeutic possibilities.
Asunto(s)
Biomarcadores/sangre , Enfermedades Cardiovasculares/genética , MicroARN Circulante/genética , Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/tratamiento farmacológico , Diagnóstico Precoz , Regulación de la Expresión Génica , Humanos , Terapia Molecular Dirigida , PronósticoRESUMEN
PURPOSE: Metabolic syndrome (MS) and sarcopenia are associated with increased cardiovascular risk. No studies using dual-energy x-ray absorptiometry (DXA) have evaluated association between body composition (BC) changes and MS in adrenal incidentaloma (AI). Our aim was to analyse BC in non-functioning AI (NFAI) and intermediate phenotype (IP) relative to controls and to correlate with cortisol levels. METHODS: Cross-sectional study with 44 NFAI (serum cortisol ≤ 50 nmol/L after the overnight 1 mg dexamethasone suppression test), 27 IP (cortisol 51-138 nmol/L), and 41 controls (normal adrenal on imaging examination) using DXA. Autonomic cortisol secretion (cortisol > 138 nmol/L) was excluded from the study. BC data were compared using criteria for MS (World Health Organization, National Cholesterol Education Program-Adult Treatment Panel-III, American Association of Clinical Endocrinologists (AACE), and International Diabetes Federation). RESULTS: There was no significant difference in clinical data and body mass index (BMI) among the three groups. Waist circumference (WC) was larger in AI vs. controls (p < 0.01). Waist-to-hip ratio was higher in NFAI vs. controls and waist-to-height ratio was higher in IP vs. controls (p = 0.03 and p = 0.02, respectively). The frequency of MS was higher in AI vs. controls. BC was not different among the groups. Patients with AI there was a significant association of MS with both an increase in total fat and body fat index (all criteria), and a significant difference between MS and smaller BMI-adjusted lean mass (AACE, p = 0.036). No correlation of cortisol after 1 mg dexamethasone test with BC or MS. AI and WC were independently associated with MS. CONCLUSIONS: AI presented high frequency of MS and was independently associated with MS. Possible deleterious effects of cortisol secretion seem to initially affect the muscular system.
Asunto(s)
Absorciometría de Fotón/métodos , Neoplasias de las Glándulas Suprarrenales/complicaciones , Composición Corporal , Síndrome Metabólico/diagnóstico , Fenotipo , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Estudios Transversales , Femenino , Humanos , Masculino , Síndrome Metabólico/etiología , Persona de Mediana Edad , Pronóstico , Adulto JovenRESUMEN
Abstract The Brazilian Cerrado has several botanical species for medicinal purposes used by traditional communities and many of these plants are not included in the list of Medicinal Plants Research Program of Central Medicines. The purpose of this study was the phytochemical screening and toxicology bioassay front of Brine shrimp L. of ethanolic extracts of eight species of plants used in folk medicine of Campo Grande, Mato Grosso do Sul, Brazil. The ethanolic extracts were submitted to phytochemical screening, determination of phenolic compounds and flavonoids. Toxicological assays were carried front of Brine shrimp according to standard methodology. The analysis TLC and HPLC-DAD confirmed the predominance of phenolic compounds and derivatives, specifically for the quercetin. The most toxic was the C. affinis DC. with death at all concentrations, the A. humile A. St. Hil. showed no mortality and the other species showed intermediate toxicity. The extracts of the investigated species are rich in phenolic compounds and derivatives, specifically quercetin, and feature toxicity between moderate to high, a fact that requires attention, since much of the traditional communities rely on herbal drugs in its raw form with preventive and curative purpose, meeting the basic health care.
Resumo O Cerrado brasileiro possui diversas espécies botânicas com fins medicinais utilizadas por comunidades tradicionais e muitas dessas plantas não estão incluídas na lista do Programa de Pesquisa de Plantas Medicinais da Central de Medicamentos. O objetivo deste estudo foi a triagem fitoquímica e o bioensaio toxicológico frente ao Brine shrimp L. de extratos etanólicos de oito espécies de plantas utilizadas na medicina popular de Campo Grande, Mato Grosso do Sul. Os extratos etanólicos foram submetidos à triagem fitoquímica, determinação de compostos fenólicos e flavonoides. Os ensaios toxicológicos foram realizados frente ao Brine shrimp de acordo com a metodologia padrão. A análise de cromatografia de camada delgada e HPLC-DAD confirmou a predominância de compostos fenólicos e derivados, especificamente para a quercetina. O mais tóxico foi o C. affinis DC. com a morte em todas as concentrações, o A. humile A. St. Hil. não apresentou mortalidade e as demais espécies apresentaram toxicidade intermediária. Os extratos das espécies investigadas são ricos em compostos fenólicos e derivados, especificamente a quercetina e apresentam toxicidade entre moderada a alta, fato que requer atenção, pois grande parte das comunidades tradicionais conta com fitoterápicos em sua forma bruta com preventivo e finalidade curativa, atendendo aos cuidados básicos de saúde.
RESUMEN
The objective of this study was to analyze the factors that influence the performance of lambs in pasture confinement, by substituting a concentrate with different levels of the aerial part of cassava in relation to hematocrit indices. The experiment was conducted at the Sheep Technology Center using 56 Pantaneira sheep, of which 28 were male and 28 were female. For female lambs, the globular volume showed a decreasing quadratic effect, with a minimum inclusion of 10.24% PAM in the diet for a hematocrit index of 32.28. A linear effect was observed for the mean crude protein intake in the male lambs based on the diet provided and was estimated to be equivalent to 87.4% of the lambs' final weight. In conclusion, mean crude protein consumption is most strongly correlated with the final weight of male lambs, and NDF is most strongly correlated with the final weight of female lambs, with the level of cyanide consumption influencing the average daily weight gain in female lambs. The hematocrit level of the male lambs decreased with an increase in the inclusion of the aerial part of cassava in the ration of the animals.(AU)
O objetivo do presente trabalho foi analisar os fatores de influência no desempenho de cordeiros em confinamento a pasto, com níveis de substituição de concentrado por parte aérea de mandioca, e sua relação com os índices de hematócritos. O experimento foi conduzido no Centro de Tecnologia de Ovinos (CTO), utilizando-se 56 ovinos da raça Pantaneira, sendo 28 machos e 28 fêmeas. No volume globular do grupo de fêmeas, observou-se efeito quadrático decrescente, com o ponto de mínimo para uma inclusão de 10,24% de PAM na ração com índice de níveis de hematócritos de 32,28. O efeito linear observado para o consumo médio de PB no modelo para cordeiros machos, conforme a dieta fornecida, em função do peso final, foi estimada o equivalente a 87,4% da formação do peso final dos cordeiros. Conclui-se que o consumo médio de proteína bruta é o fator com maior correlação com o peso final dos cordeiros machos e para as fêmeas o fator com maior correlação foi FDN, os níveis de consumo de cianeto influenciaram no ganho de peso médio diário das fêmeas. O nível de hematócritos dos cordeiros machos foi reduzido com o aumento da inclusão da parte aérea da mandioca na ração dos animais.(AU)
Asunto(s)
Animales , Pastizales/análisis , Ovinos/crecimiento & desarrollo , Hematócrito/veterinaria , Ovinos/sangre , Alimentación AnimalRESUMEN
The objective of this study was to analyze the factors that influence the performance of lambs in pasture confinement, by substituting a concentrate with different levels of the aerial part of cassava in relation to hematocrit indices. The experiment was conducted at the Sheep Technology Center using 56 Pantaneira sheep, of which 28 were male and 28 were female. For female lambs, the globular volume showed a decreasing quadratic effect, with a minimum inclusion of 10.24% PAM in the diet for a hematocrit index of 32.28. A linear effect was observed for the mean crude protein intake in the male lambs based on the diet provided and was estimated to be equivalent to 87.4% of the lambs' final weight. In conclusion, mean crude protein consumption is most strongly correlated with the final weight of male lambs, and NDF is most strongly correlated with the final weight of female lambs, with the level of cyanide consumption influencing the average daily weight gain in female lambs. The hematocrit level of the male lambs decreased with an increase in the inclusion of the aerial part of cassava in the ration of the animals.(AU)
O objetivo do presente trabalho foi analisar os fatores de influência no desempenho de cordeiros em confinamento a pasto, com níveis de substituição de concentrado por parte aérea de mandioca, e sua relação com os índices de hematócritos. O experimento foi conduzido no Centro de Tecnologia de Ovinos (CTO), utilizando-se 56 ovinos da raça Pantaneira, sendo 28 machos e 28 fêmeas. No volume globular do grupo de fêmeas, observou-se efeito quadrático decrescente, com o ponto de mínimo para uma inclusão de 10,24% de PAM na ração com índice de níveis de hematócritos de 32,28. O efeito linear observado para o consumo médio de PB no modelo para cordeiros machos, conforme a dieta fornecida, em função do peso final, foi estimada o equivalente a 87,4% da formação do peso final dos cordeiros. Conclui-se que o consumo médio de proteína bruta é o fator com maior correlação com o peso final dos cordeiros machos e para as fêmeas o fator com maior correlação foi FDN, os níveis de consumo de cianeto influenciaram no ganho de peso médio diário das fêmeas. O nível de hematócritos dos cordeiros machos foi reduzido com o aumento da inclusão da parte aérea da mandioca na ração dos animais.(AU)
Asunto(s)
Animales , Pastizales/análisis , Ovinos/crecimiento & desarrollo , Hematócrito/veterinaria , Ovinos/sangre , Alimentación AnimalRESUMEN
A atresia anal com fístula retovaginal, é considerada uma afecção congênita rara nos ovinos. Em virtude disso, buscou-se descrever o reparo cirúrgico e cuidados pós-operatórios em uma borrega que apresentava essa afecção. Nesse sentido, uma borrega, sem raça definida, de 25 dias de idade e pesando 7,2kg, apresentou sinais de distensão abdominal e defecação pela vulva. A afecção foi diagnosticada por meio do exame clínico e confirmada radiograficamente, constatando-se atresia anal do tipo III em associação com a fístula.(AU)
Atresia ani associated with rectovaginal fistula is considered a rare congenital anomaly in sheep. Therefore, the surgical correction and post-operative care of a lamb presenting atresia ani with rectovaginal fistula has been detailed in this case report. A 25-days old, mixed breed lamb, weighing 7.2 kg, showing signs of abdominal bloating, and stool passage through the vulva was admitted at our hospital. An atresia ani type III condition associated with rectovaginal fistula was diagnosed by clinical examination and confirmed by radiographic examination.(AU)