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1.
Food Res Int ; 188: 114434, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38823828

RESUMO

In this work, dispersions were prepared with commercial pea protein isolate (PPI) and subjected to different (i) high pressure homogenization (HPH) intensities (0 - 200 MPa) (room temperature, pH 7) or (ii) environmental conditions (60 °C, pH 7 or pH 12) to generate dispersions with distinct protein molecular and microstructural characteristics, impacting protein solubility. Besides, protein digestion was analyzed following the static INFOGEST in vitro digestion protocol. Generally, increasing pressure of the homogenization treatment was linked with decreasing particle sizes and enhanced protein digestion. More specifically, the dispersion that did not undergo HPH (0 MPa) as well as the dispersion treated at 60 °C, pH 7, had highly similar microstructures, consisting of large irregular particles (10 - 500 µm) with shell-like structures, and exhibited low solubility (around 15 % and 28 %, respectively), which resulted in limited proteolysis (35 % and 42 %, respectively). In contrast, the dispersion subjected to HPH at 100 MPa and the dispersion treated at 60 °C, pH 12 also had similar microstructures with small and homogeneous particles (<1 µm), and exhibited relatively good solubility (54 % and 31 %, respectively), which led to enhanced protein digestion levels (87 % and 74 %, respectively). This study highlights the potential of food processing on macronutrient (micro)structure and further gastrointestinal stability and functionality.


Assuntos
Digestão , Manipulação de Alimentos , Tamanho da Partícula , Proteínas de Ervilha , Pressão , Solubilidade , Proteínas de Ervilha/química , Concentração de Íons de Hidrogênio , Manipulação de Alimentos/métodos , Proteólise , Pisum sativum/química , Temperatura
2.
AJNR Am J Neuroradiol ; 44(8): 894-900, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37500286

RESUMO

BACKGROUND AND PURPOSE: ASPECTS quantifies early ischemic changes in anterior circulation stroke on NCCT but has interrater variability. We examined the agreement of conventional and automated ASPECTS and studied the value of computer-aided detection. MATERIALS AND METHODS: We retrospectively collected imaging data from consecutive patients with acute ischemic stroke with large-vessel occlusion undergoing thrombectomy. Five raters scored conventional ASPECTS on baseline NCCTs, which were also processed by RAPID software. Conventional and automated ASPECTS were compared with a consensus criterion standard. We determined the agreement over the full ASPECTS range as well as dichotomized, reflecting thrombectomy eligibility according to the guidelines (ASPECTS 0-5 versus 6-10). Raters subsequently scored ASPECTS on the same NCCTs with assistance of the automated ASPECTS outputs, and agreement was obtained. RESULTS: For the total of 175 cases, agreement among raters individually and the criterion standard varied from fair to good (weighted κ = between 0.38 and 0.76) and was moderate (weighted κ = 0.59) for the automated ASPECTS. The agreement of all raters individually versus the criterion standard improved with software assistance, as did the interrater agreement (overall Fleiss κ = 0.15-0.23; P < .001 and .39 to .55; P = .01 for the dichotomized ASPECTS). CONCLUSIONS: Automated ASPECTS had agreement with the criterion standard similar to that of conventional ASPECTS. However, including automated ASPECTS during the evaluation of NCCT in acute stroke improved the agreement with the criterion standard and improved interrater agreement, which could, therefore, result in more uniform scoring in clinical practice.


Assuntos
Isquemia Encefálica , AVC Isquêmico , Acidente Vascular Cerebral , Humanos , Isquemia Encefálica/diagnóstico por imagem , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos , Acidente Vascular Cerebral/diagnóstico por imagem , Software , Computadores
3.
BMC Health Serv Res ; 23(1): 290, 2023 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-36978062

RESUMO

BACKGROUND: Incorporating clinical pharmacists in collaborative medical teams results in better patient treatment and health outcomes. In addition, the understanding of other healthcare professionals (HCPs) towards the role of clinical pharmacists can either facilitate or hinder the implementation and expansion of these services. The main distinction between pharmacists and clinical pharmacists lie in their different scope of duties. This study set out to explore other HCPs' understanding towards the role of the clinical pharmacists in South Africa, and to identify associated factors. METHODS: An exploratory, survey-based, quantitative study was conducted. A survey assessing HCPs' understanding based on the competencies and role of a clinical pharmacist was distributed to 300 doctors, nurses, pharmacists and clinical pharmacists. An exploratory factor analysis was carried out to determine the construct validity of the measurement. Items were analysed for grouping into subscales through principal components analysis. Differences in the variable scores for gender, age, work experience and previous experience working with a clinical pharmacist were analyzed using independent t-tests. Analysis of variance was used to analyze differences in the variable scores for the different HCPs and the different departments of work in the hospital. RESULTS: The factor analysis yielded two separate subscales, measuring HCPs' (n = 188) understanding towards the role of a clinical pharmacist, as well as the competencies of a clinical pharmacist. Doctors (85, n = 188) (p = 0.004) and nurses (76, n = 188) (p = 0.022), working in both surgical and non-surgical units, had significantly poorer understanding of the role of clinical pharmacists than clinical pharmacists (8, n = 188) and pharmacists (19, n = 188) (p = 0.028). Where specific clinical pharmacist activities were described, 5-16% of pharmacists were unsure whether an activity forms part of a clinical pharmacist's role. Over 50% of the clinical pharmacists disagreed that their role also includes pharmacist's activities, like stock procurement and control, pharmacy and administrative work, and hospital pharmacy-medication dispensing activities. CONCLUSION: The findings highlighted the possible impact of role expectations and lack of understanding among HCPs. A standard job description with recognition from statutory bodies could promote other HCPs, as well as clinical pharmacists' understanding of their roles. Findings further suggested the need for interventions like interprofessional education opportunities, staff induction programmes and regular interprofessional meetings to foster acknowledgement of clinical pharmacy services, promoting the acceptance and growth of the profession.


Assuntos
Farmacêuticos , Serviço de Farmácia Hospitalar , Humanos , África do Sul , Atitude do Pessoal de Saúde , Pessoal de Saúde , Papel Profissional
5.
Adv Health Sci Educ Theory Pract ; 28(4): 1027-1052, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-36653557

RESUMO

Student diversity in health professions education (HPE) can be affected by selection procedures. Little is known about how different selection tools impact student diversity across programs using different combinations of traditional and broadened selection criteria. The present multi-site study examined the chances in selection of subgroups of applicants to HPE undergraduate programs with distinctive selection procedures, and their performance on corresponding selection tools. Probability of selection of subgroups (based on gender, migration background, prior education, parental education) of applicants (N = 1935) to five selection procedures of corresponding Dutch HPE undergraduate programs was estimated using multilevel logistic regression. Multilevel linear regression was used to analyze performance on four tools: prior-education grade point average (pe-GPA), biomedical knowledge test, curriculum-sampling test, and curriculum vitae (CV). First-generation Western immigrants and applicants with a foreign education background were significantly less likely to be selected than applicants without a migration background and with pre-university education. These effects did not vary across programs. More variability in effects was found between different selection tools. Compared to women, men performed significantly poorer on CVs, while they had higher scores on biomedical knowledge tests. Applicants with a non-Western migration background scored lower on curriculum-sampling tests. First-generation Western immigrants had lower CV-scores. First-generation university applicants had significantly lower pe-GPAs. There was a variety in effects for applicants with different alternative forms of prior education. For curriculum-sampling tests and CVs, effects varied across programs. Our findings highlight the need for continuous evaluation, identifying best practices within existing tools, and applying alternative tools.


Assuntos
Critérios de Admissão Escolar , Estudantes , Masculino , Humanos , Feminino , Avaliação Educacional , Escolaridade , Ocupações em Saúde
6.
Eur J Neurol ; 28(2): 532-539, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33015924

RESUMO

BACKGROUND AND PURPOSE: Polypharmacy is an important challenge in clinical practice. Our aim was to determine the effect of polypharmacy on functional outcome and treatment effect of alteplase in acute ischaemic stroke. METHODS: This was a post hoc analysis of the randomized, placebo-controlled WAKE-UP trial of magnetic resonance imaging guided intravenous alteplase in unknown onset stroke. Polypharmacy was defined as an intake of five or more medications at baseline. Comorbidities were assessed by the Charlson Comorbidity Index (CCI). The primary efficacy variable was favourable outcome defined by a score of 0-1 on the modified Rankin Scale at 90 days. Logistic regression analysis was used to test for an association of polypharmacy with functional outcome, and for interaction of polypharmacy and the effect of thrombolysis. RESULTS: Polypharmacy was present in 133/503 (26%) patients. Patients with polypharmacy were older (mean age 70 vs. 64 years; p < 0.0001) and had a higher score on the National Institutes of Health Stroke Scale at baseline (median 7 vs. 5; p = 0.0007). A comorbidity load defined by a CCI score ≥ 2 was more frequent in patients with polypharmacy (48% vs. 8%; p < 0.001). Polypharmacy was associated with lower odds of favourable outcome (adjusted odds ratio 0.50, 95% confidence interval 0.30-0.85; p = 0.0099), whilst the CCI score was not. Treatment with alteplase was associated with higher odds of favourable outcome in both groups, with no heterogeneity of treatment effect (test for interaction of treatment and polypharmacy, p = 0.29). CONCLUSION: In stroke patients, polypharmacy is associated with worse functional outcome after intravenous thrombolysis independent of comorbidities. However, polypharmacy does not interact with the beneficial effect of alteplase.


Assuntos
Isquemia Encefálica , AVC Isquêmico , Acidente Vascular Cerebral , Idoso , Isquemia Encefálica/tratamento farmacológico , Fibrinolíticos/uso terapêutico , Humanos , Polimedicação , Acidente Vascular Cerebral/tratamento farmacológico , Terapia Trombolítica , Ativador de Plasminogênio Tecidual/uso terapêutico , Resultado do Tratamento
7.
Arq. bras. med. vet. zootec. (Online) ; 70(5): 1569-1576, set.-out. 2018. tab, ilus
Artigo em Português | LILACS, VETINDEX | ID: biblio-947419

RESUMO

Paratanaisia bragai é um trematódeo que parasita rins e ureteres de aves domésticas e selvagens. Apesar de considerado pouco patogênico pode levar a complicações clínicas e morte em infecções severas. No presente estudo, um caso de parasitismo fatal em maritaca (Psittacara leucophthalmus) por P. bragai é relatado. A ave, oriunda da área urbana do município de Lavras, Minas Gerais, Brasil, teve manifestações clínicas de apatia, desidratação, dispneia e veio a óbito. Na necropsia foram observados rins aumentados de volume, pálidos, com superfície irregular e nodulações esbranquiçadas. Ao corte verificaram-se parasitos nos rins, que foram processados para montagem de lâminas permanentes e identificados segundo técnica de rotina como P. bragai. No exame histopatológico dos rins foram constatados infiltrado inflamatório linfoplasmocítico multifocal moderado, dilatação de túbulos e focos de regeneração tubular, associados a fibrose intersticial moderada no córtex renal. Na medula renal havia infiltrado de macrófagos, heterófilos, eosinófilos e células gigantes multinucleadas associado a parasitos em ductos coletores dilatados. O parasitismo de P. leucophthalmus por P. bragai é relatado pela primeira vez. A importância de se considerar este parasito entre as possibilidades diagnósticas em aves com insuficiência renal é brevemente discutida.(AU)


Paratanaisia bragai is a trematode parasite of the kidneys and ureters of poultry and wild birds. Despite its low pathogenicity, this parasite can lead to several clinical complications and death in heavy infections. In the present study, a fatal case of parasitism by P. bragai in a specimen of the White-eyed Parakeet, Psittacara leucophthalmus, is reported. The bird, coming from the urban area of the county of Lavras, Minas Gerais, Brazil, was clinically evaluated and revealed apathy, dehydration, dyspnea, and death. The gross findings were pale and enlarged kidneys, which also had irregular surface with whitish nodulations. Parasites were observed on cutting surface of the renal parenchyma. They were processed for assembly of permanent slides and identified as P. bragai according to routine technique. The histologic findings were mild multifocal lymphoplasmacytic infiltrate, tubular dilatation and foci of tubular regeneration related to mild interstitial fibrosis in the renal cortex, and infiltration of macrophages, heterophils, eosinophils and multinucleated giant cells associated with metazoan parasites in the collecting ducts in renal medulla. The parasitism of P. leucophthalmus by P. bragai is reported for the first time. The importance of considering this parasite among the diagnostic possibilities in birds with renal insufficiency is briefly discussed.(AU)


Assuntos
Técnicas de Laboratório Clínico/veterinária , Papagaios/parasitologia , Infecções por Trematódeos
8.
Rev Med Liege ; 72(7-8): 363-368, 2017 Jul.
Artigo em Francês | MEDLINE | ID: mdl-28795550

RESUMO

Chronic osteomyelitis is a chronic inflammatory disease induced by bone infection. It may be limited to a single portion of bone or involve several areas such as marrow, cortical, periosteum and adjacent soft tissues. Being able to persist for weeks, months or even years, it remains a therapeutic challenge in spite of the important medical and surgical advances, with a prolonged and complex management given the nature of the surgical interventions and the antibiotherapies required. We report a case of chronic osteomyelitis treated by long-term suppressive antibiotic therapy, which may be a reasonable alternative to surgery in inoperable clinical situations, but taking into account the risks associated with it in terms of side effects and selection of resistant organisms, as well as the cost of treatment and the quality of life of the patient.


L'ostéomyélite chronique est une pathologie inflammatoire chronique induite par une infection osseuse. Elle peut être limitée à une seule portion d'os ou impliquer plusieurs zones telles que la moelle, la corticale, le périoste et les tissus mous adjacents. Pouvant persister pendant des semaines, des mois voire des années, elle reste un challenge thérapeutique en dépit des importantes avancées médicales et chirurgicales, avec une prise en charge prolongée et complexe compte tenu de la nature des interventions chirurgicales et des antibiothérapies requises. Nous rapportons un cas d'ostéomyélite chronique pris en charge par antibiothérapie suppressive au long cours, qui peut être une alternative raisonnable à la chirurgie dans des situations cliniques inopérables, mais en prenant en considération les risques qui y sont associés en termes d'effets secondaires et de sélection des germes résistants, ainsi que le coût du traitement et la qualité de vie du patient.


Assuntos
Antibacterianos/uso terapêutico , Osteomielite/tratamento farmacológico , Idoso , Doença Crônica , Esquema de Medicação , Floxacilina/uso terapêutico , Humanos , Masculino , Minociclina/uso terapêutico , Rifampina/uso terapêutico
9.
Adv Health Sci Educ Theory Pract ; 22(2): 447-462, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28054158

RESUMO

Medical schools seek ways to improve their admissions strategies, since the available methods prove to be suboptimal for selecting the best and most motivated students. In this multi-site cross-sectional questionnaire study, we examined the value of (different) selection procedures compared to a weighted lottery procedure, which includes direct admission based on top pre-university grade point averages (≥8 out of 10; top-pu-GPA). We also considered whether students had participated in selection, prior to being admitted through weighted lottery. Year-1 (pre-clinical) and Year-4 (clinical) students completed standard validated questionnaires measuring quality of motivation (Academic Self-regulation Questionnaire), strength of motivation (Strength of Motivation for Medical School-Revised) and engagement (Utrecht Work Engagement Scale-Student). Performance data comprised GPA and course credits in Year-1 and clerkship performance in Year-4. Regression analyses were performed. The response rate was 35% (387 Year-1 and 273 Year-4 students). Top-pu-GPA students outperformed selected students. Selected Year-1 students reported higher strength of motivation than top-pu-GPA students. Selected students did not outperform or show better quality of motivation and engagement than lottery-admitted students. Participation in selection was associated with higher engagement and better clerkship performance in Year-4. GPA, course credits and strength of motivation in Year-1 differed between students admitted through different selection procedures. Top-pu-GPA students perform best in the medical study. The few and small differences found raise questions about the added value of an extensive selection procedure compared to a weighted lottery procedure. Findings have to be interpreted with caution because of a low response rate and small group sizes.


Assuntos
Motivação , Critérios de Admissão Escolar , Faculdades de Medicina/normas , Logro , Adolescente , Fatores Etários , Cognição , Estudos Transversais , Avaliação Educacional , Feminino , Humanos , Entrevistas como Assunto , Masculino , Fatores Sexuais , Fatores Socioeconômicos , Adulto Jovem
10.
Pharmacol Ther ; 166: 71-83, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27373506

RESUMO

Targeting the epidermal growth factor receptor (EGFR) with monoclonal antibodies (mAbs) or tyrosine kinase inhibitors (TKI) has been an interesting therapeutic strategy because aberrant activation of this receptor plays an important role in the tumorgenesis of many cancer types, including colorectal cancer (CRC). After the initial promising results of EGFR-targeted therapies, therapeutic resistance is a major clinical problem. In order to overcome resistance to these EGFR-targeted therapies, new treatment options are necessary. In contrast to first generation EGFR inhibitors, afatinib (BIBW2992) is a second-generation irreversible ErbB family blocker that inhibits EGFR as well as HER2 and HER4. Consequently, treatment with afatinib may result in a distinct and more pronounced therapeutic benefit. Preclinical studies have reported promising results for afatinib in monotherapy as well as in combination with other drugs in CRC model systems. Furthermore, clinical studies examining afatinib as single agent and in combination therapy demonstrated manageable safety profile. Nevertheless, only limited antitumor activity has been observed in CRC patients. Although several combination treatments with afatinib have already been investigated, no optimal combination has been identified for CRC patients yet. As molecular tumor characteristics have gained increased importance in the choice of treatment, additional studies with biomarker-driven patient recruitment are required to further explore afatinib efficacy in CRC.


Assuntos
Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Quinazolinas/farmacologia , Quinazolinas/uso terapêutico , Afatinib , Animais , Anticorpos Monoclonais , Antineoplásicos/administração & dosagem , Neoplasias Colorretais/fisiopatologia , Terapia Combinada , Relação Dose-Resposta a Droga , Receptores ErbB/antagonistas & inibidores , Humanos , Quinazolinas/administração & dosagem , Fatores de Crescimento do Endotélio Vascular/metabolismo
11.
Med Res Rev ; 36(4): 749-86, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27140825

RESUMO

Considering the important side effects of conventional microtubule targeting agents, more and more research focuses on regulatory proteins for the development of mitosis-specific agents. Polo-like kinase 1 (Plk1), a master regulator of several cell cycle events, has arisen as an intriguing target in this research field. The observed overexpression of Plk1 in a broad range of human malignancies has given rise to the development of several potent and specific small molecule inhibitors targeting the kinase. In this review, we focus on volasertib (BI6727), the lead agent in category of Plk1 inhibitors at the moment. Numerous preclinical experiments have demonstrated that BI6727 is highly active across a variety of carcinoma cell lines, and the inhibitor has been reported to induce tumor regression in several xenograft models. Moreover, volasertib has shown clinical efficacy in multiple tumor types. As a result, Food and Drug Administration (FDA) has recently awarded volasertib the Breakthrough Therapy status after significant benefit was observed in acute myeloid leukemia (AML) patients treated with the Plk1 inhibitor. Here, we discuss both preclinical and clinical data available for volasertib administered as monotherapy or in combination with other anticancer therapies in a broad range of tumor types.


Assuntos
Antineoplásicos/farmacologia , Proteínas de Ciclo Celular/antagonistas & inibidores , Neoplasias/tratamento farmacológico , Inibidores de Proteínas Quinases/farmacologia , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Proteínas Proto-Oncogênicas/antagonistas & inibidores , Pteridinas/farmacologia , Animais , Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Humanos , Neoplasias/enzimologia , Inibidores de Proteínas Quinases/uso terapêutico , Pteridinas/administração & dosagem , Pteridinas/uso terapêutico , Ensaios Clínicos Controlados Aleatórios como Assunto , Quinase 1 Polo-Like
12.
J Comp Pathol ; 154(1): 3-8, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26797583

RESUMO

Viral infections have been implicated as the cause of cardiomyopathy in several mammalian species. This study describes hypertrophic cardiomyopathy (HCM) and myocarditis associated with feline immunodeficiency virus (FIV) infection in five cats aged between 1 and 4 years. Clinical manifestations included dyspnoea in four animals, one of which also exhibited restlessness. One animal showed only lethargy, anorexia and vomiting. Necropsy examination revealed marked cardiomegaly, marked left ventricular hypertrophy and pallor of the myocardium and epicardium in all animals. Microscopical and immunohistochemical examination showed multifocal infiltration of the myocardium with T lymphocytes and fewer macrophages, neutrophils and plasma cells. An intense immunoreaction for FIV antigen in the cytoplasm and nucleus of lymphocytes and the cytoplasm of some macrophages was observed via immunohistochemistry (IHC). IHC did not reveal the presence of antigen from feline calicivirus, coronavirus, feline leukaemia virus, feline parvovirus, Chlamydia spp. or Toxoplasma gondii. The results demonstrate the occurrence of FIV infection in inflammatory cells in the myocardium of five cats with myocarditis and HCM.


Assuntos
Cardiomiopatia Hipertrófica/veterinária , Doenças do Gato/virologia , Vírus da Imunodeficiência Felina , Infecções por Lentivirus/veterinária , Miocardite/veterinária , Animais , Cardiomiopatia Hipertrófica/virologia , Gatos , Feminino , Infecções por Lentivirus/patologia , Masculino , Miocardite/virologia
14.
Rev Med Liege ; 68(1): 32-7, 2013 Jan.
Artigo em Francês | MEDLINE | ID: mdl-23444826

RESUMO

Metal-on-metal total hip arthroplasty (MOM THA) fuels debate in the orthopedic community after statistics showed higher-than-expected short-term failures in comparison with metal-on-polyethylene THA. The problem of early failure in the young, active patient with a metal-on-polyethylene implant has prompted the research of another couple. Multiple studies showed the advantages of MOM THA. The results of MOM resurfacing and MOM THA in our hospital did not show concerning results. Nonetheless, the data in the literature shows divergent opinions. The most recent statistics indicate that the results are disappointing, particularly with specific types of implants. Several institutions, in the USA and in Europe, are developing protocols for the follow-up of patients with MOM hip implants. Today, we are headed towards imposing a moratorium on using MOM THA.


Assuntos
Artroplastia de Quadril , Prótese de Quadril/efeitos adversos , Metais/efeitos adversos , Desenho de Prótese/tendências , Falha de Prótese , Artroplastia de Quadril/efeitos adversos , Artroplastia de Quadril/métodos , Articulação do Quadril/cirurgia , Humanos , Íons/metabolismo , Metais/química , Metais/metabolismo , Desenho de Prótese/métodos , Falha de Prótese/tendências
15.
Vet Pathol ; 50(5): 775-8, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23417165

RESUMO

Trema micrantha, a fast-growing tree distributed throughout the Americas, produces palatable leaves that have been associated with hepatic necrosis and acute death when consumed by livestock. This report describes fatal pulmonary disease of sheep triggered by consumption of Trema micrantha. Affected sheep had severe progressive dyspnea for a few days before death. Subcutaneous and mediastinal emphysema, reddened lungs, interalveolar septal thickening, and diffuse type II pneumocyte proliferation were the main pathological findings. After ingesting 77.5 and 102.5 g/kg (divided in 3 doses, at 30-day intervals) of T. micrantha leaves, 2 additional sheep developed the same condition. These findings indicate that T. micrantha toxicosis should be considered in the differential diagnosis of ovine respiratory disease.


Assuntos
Dispneia/veterinária , Enfisema Mediastínico/veterinária , Intoxicação/veterinária , Doenças dos Ovinos/induzido quimicamente , Doenças dos Ovinos/diagnóstico , Doenças dos Ovinos/patologia , Trema/toxicidade , Animais , Brasil , Diagnóstico Diferencial , Dispneia/induzido quimicamente , Dispneia/patologia , Evolução Fatal , Pulmão/patologia , Enfisema Mediastínico/induzido quimicamente , Enfisema Mediastínico/patologia , Plantas Tóxicas/efeitos adversos , Intoxicação/diagnóstico , Intoxicação/patologia , Ovinos
16.
Br J Cancer ; 101(4): 628-36, 2009 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-19672265

RESUMO

BACKGROUND: The aim of this study was to evaluate the radiosensitising effect of gemcitabine, in terms of cell-cycle progression, induction of apoptosis, and to investigate the molecular events regulating apoptosis. METHODS: Tumour cells were treated with gemcitabine, radiation, or the combination. 0-72 h after treatment, cells were collected for cell-cycle analysis and apoptosis determination. Caspase 8 and 9, Bid and tBid expression were determined by western blot. The mitochondrial membrane potential was determined using flow cytometry. An RT(2) Profiler PCR Array for human apoptotic genes was performed after the combination or TRAIL treatment. RESULTS: Gemcitabine and radiation resulted in an early S-phase block immediately after treatment, after which the cells moved synchronously through the cell cycle. When cell-cycle distribution returned to pre-treatment levels, an increased induction of apoptosis was observed with activation of caspase 8 and 9 and a reduction of the mitochondrial membrane potential. Gene expression after treatment with radiosensitising conditions was comparable with expression after the TRAIL treatment. CONCLUSION: A role for the cell-cycle perturbations and the induction of apoptosis could be attributed to the radiosensitising effect of gemcitabine. Apoptosis induction was comparable with the apoptotic pathway observed after the TRAIL treatment, that is the involvement of the extrinsic apoptosis pathway.


Assuntos
Apoptose/efeitos dos fármacos , Desoxicitidina/análogos & derivados , Radiossensibilizantes/farmacologia , Apoptose/fisiologia , Apoptose/efeitos da radiação , Proteína Agonista de Morte Celular de Domínio Interatuante com BH3/efeitos dos fármacos , Proteína Agonista de Morte Celular de Domínio Interatuante com BH3/metabolismo , Proteína Agonista de Morte Celular de Domínio Interatuante com BH3/efeitos da radiação , Western Blotting , Caspase 8/efeitos dos fármacos , Caspase 8/metabolismo , Caspase 8/efeitos da radiação , Caspase 9/efeitos dos fármacos , Caspase 9/metabolismo , Caspase 9/efeitos da radiação , Linhagem Celular Tumoral , Desoxicitidina/farmacologia , Ativação Enzimática/efeitos dos fármacos , Ativação Enzimática/efeitos da radiação , Citometria de Fluxo , Humanos , Marcação In Situ das Extremidades Cortadas , Potencial da Membrana Mitocondrial , Reação em Cadeia da Polimerase , Gencitabina
17.
J Chir (Paris) ; 145(3): 234-7, 2008.
Artigo em Francês | MEDLINE | ID: mdl-18772730

RESUMO

When surgery is indicated for bleeding duodenal ulcer, the traditional standard of care has been "radical surgical treatment is preferable to conservative therapy since the risk of rebleeding is reduced without an augmentation in morbidity and mortality". This principle is based on two prospective studies published before 1995. Radical surgery at that time consisted of antrectomy, while conservative therapy included oversewing of the bleeding vessel in the ulcer bed and ligation of the gastroduodenal artery (Weinberg procedure). This strategy must be re-evaluated in 2008 in view of our better understanding of the role of Helicopacter pylori in the causation of duodenal ulceration and the decreased risk of post-operative re-bleeding with the use of proton pump inhibitors. The role of surgery has changed. Its aim is no longer to cure the ulcer diathesis but rather to urgently control bleeding in anticipation of ulcer cure with medical therapy.


Assuntos
Úlcera Duodenal/cirurgia , Hemorragia Gastrointestinal/etiologia , Hemorragia Gastrointestinal/cirurgia , Antro Pilórico/cirurgia , Artérias , Procedimentos Cirúrgicos do Sistema Digestório/métodos , Humanos
18.
J Med Food ; 11(2): 356-61, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18598180

RESUMO

Kefir is an association of microrganisms generally grown in milk, with known probiotic activities identified from its soured suspensions. Aqueous media are also able to grow kefir, but little is known about the probiotic properties of its fermented products. This work aimed to evaluate some probiotic properties of a carbohydrate fraction isolated from sugary kefir (sugary kefir carbohydrate [SKC]). Anti-inflammatory activity of the isolated fraction of carbohydrate was tested both in vitro (cellular respirometry and macrophage culture) and in vivo (50% effective dose, rat paw edema, vascular permeability, and cicatrizing test). The results indicated no significant difference for oxygen uptake or macrophage culture between control and test groups. Rat paw edema, however, showed a significant inhibitory activity by 30 +/- 4% and 54 +/- 8% (P < .001) for carrageenan and dextran, respectively. In the cicatrizing test, animals treated with SKC cream also presented less trauma after treatments as compared to the negative control group (P < .05). The overall data suggested the SKC as a natural product that could be used as a constituent of an anti-inflammatory compound.


Assuntos
Anti-Inflamatórios/farmacologia , Carboidratos/isolamento & purificação , Carboidratos/farmacologia , Cicatriz/induzido quimicamente , Produtos Fermentados do Leite/química , Animais , Anti-Inflamatórios/administração & dosagem , Carboidratos/administração & dosagem , Células Cultivadas , Produtos Fermentados do Leite/microbiologia , Edema/tratamento farmacológico , Macrófagos Peritoneais/efeitos dos fármacos , Macrófagos Peritoneais/metabolismo , Masculino , Consumo de Oxigênio/efeitos dos fármacos , Probióticos/farmacologia , Ratos , Ratos Wistar
19.
J Chir (Paris) ; 145(3): 234-7, 2008 May.
Artigo em Francês | MEDLINE | ID: mdl-22805256

RESUMO

O. Brehant, D. Fuks, C. Sabbagh, A. Wouters, C. Mention, F. Dumont, JM. Regimbeau When surgery is indicated for bleeding duodenal ulcer, the traditional standard of care has been "radical surgical treatment is preferable to conservative therapy since the risk of rebleeding is reduced without an augmentation in morbidity and mortality". This principle is based on two prospective studies published before 1995. Radical surgery at that time consisted of antrectomy, while conservative therapy included oversewing of the bleeding vessel in the ulcer bed and ligation of the gastroduodenal artery (Weinberg procedure). This strategy must be re-evaluated in 2008 in view of our better understanding of the role of Helicopacter pylori in the causation of duodenal ulceration and the decreased risk of post-operative re-bleeding with the use of proton pump inhibitors. The role of surgery has changed. Its aim is no longer to cure the ulcer diathesis but rather to urgently control bleeding in anticipation of ulcer cure with medical therapy.

20.
Eur J Clin Nutr ; 56(3): 245-51, 2002 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11960300

RESUMO

OBJECTIVES: To evaluate the acceptance of a multinutrient liquid nutrition supplement in psycho-geriatric nursing home patients and the effect on weight, plasma nutrients and activities of daily life. DESIGN: Double-blind, placebo-controlled 12-week intervention study. SETTING: Two nursing homes in Boxtel, The Netherlands. SUBJECTS: Forty-two (body mass index (BMI) <23 kg/m2 for men or <25 kg/m2 for women) psycho-geriatric nursing home patients aged 60 y or over. INTERVENTIONS: Provision with a complete micronutrient-enriched liquid nutrition supplement of 125 ml and 0.6 MJ (135 kcal) or placebo twice daily during daytime between main meals. Study parameters were assessed at 0, 6 and 12 weeks. MAIN OUTCOME FOR MEASURES: Weight, Barthel index of daily activities, several plasma values (albumin, C-reactive protein (CRP), homocysteine, thiamine, thiamine diphosphate (TDF), vitamin B6, vitamin B12, folic acid, vitamin D), bowel function. RESULTS: The supplement was well accepted. Thirty-five patients completed the intervention period (16 control group; 19 supplement group). Baseline daily nutrient intake was low. A statistically significant improvement was observed for body weight (difference between groups 2.2 kg, P=0.03), and homocysteine, vitamin B1, TDF, vitamin B6, vitamin B12, folate and vitamin D in the supplement group compared to the placebo group. No significant difference was observed in the Barthel index (mean difference -0.3+/-1.1 for both groups). No difference in occurrence of diarrhoea was observed. CONCLUSIONS: The study shows that nutritional supplementation is well accepted and can improve the nutritional status of psycho-geriatric nursing home patients. SPONSORSHIP: Numico Research BV.


Assuntos
Bebidas , Demência/psicologia , Suplementos Nutricionais , Instituição de Longa Permanência para Idosos , Avaliação Nutricional , Idoso , Idoso de 80 Anos ou mais , Método Duplo-Cego , Feminino , Humanos , Masculino , Países Baixos , Casas de Saúde , Estudos Prospectivos
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