Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 124
Filtrar
1.
Klin Onkol ; 36(3): 246-250, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37353354

RESUMO

BACKGROUND: Hepatosplenic T-cell lymphoma (HSTCL) is a rare subtype of peripheral T-cell lymphoma. Patients usually present with splenomegaly and pancytopenia but without lymphadenopathy. Immunohistochemistry (IHC) staining of bone marrow biopsy shows intra-sinusoidal infiltration of CD3 and CD56 T-lymphocytes. Current treatment strategy of HSTCL includes a CHOP regimen (cyclophosphamide, adriamycine, vincristine, prednisone) followed by autologous transplantation. CASE: A 28-year-old male presented with abdominal fullness, weight loss, and massive splenomegaly. Laboratory findings revealed pancytopenia. A CT scan of the abdomen displayed hepatomegaly and massive splenomegaly. The bone marrow pathology examination showed monotonous medium-sized lymphocytes with some cluster of atypical lymphocytes with loosely condensed chromatin and pale cytoplasm. The intra-sinusoidal location was more prominent after using IHC staining of CD3 and CD56, which are characteristics of HSTCL. We administered CHOP-based regiment every 3 weeks for 3 cycles; however, the response was a stable disease. Since the splenomegaly was still massive and compromised the patient, the multidisciplinary team decided to perform splenectomy. Unfortunately, the patient did not survive the surgery. CONCLUSION: Hepatosplenic T-cell lymphoma is a rare aggressive disease, which is part of peripheral T-cell lymphoma. CHOP-based chemotherapy appeared to be ineffective, and we need further studies to find the optimal treatment of HSTCL.


Assuntos
Neoplasias Hepáticas , Linfoma de Células T Periférico , Linfoma de Células T , Pancitopenia , Neoplasias Esplênicas , Masculino , Humanos , Adulto , Esplenomegalia/etiologia , Esplenomegalia/patologia , Pancitopenia/etiologia , Linfoma de Células T/complicações , Linfoma de Células T/terapia , Linfoma de Células T/diagnóstico , Neoplasias Esplênicas/complicações , Neoplasias Esplênicas/terapia , Neoplasias Hepáticas/diagnóstico
2.
Eur J Surg Oncol ; 48(10): 2094-2103, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35931589

RESUMO

INTRODUCTION: Clinical Quality Registries (CQRs) were initiated in order to compare clinical outcomes between hospitals or regions within a country. To get an overview of these CQRs worldwide the aim of this study was to identify these CQRs for gynecological oncology and to summarize their characteristics, processes and QI's and to establish whether it is feasible to make an international comparison in the future. METHODS: To identify CQRs in gynecological oncology a literature search in Pubmed was performed. All papers describing the use of a CQR were included. Administrative, epidemiological and cancer registries were excluded as these registries do not primarily serve to measure quality of care through QI's. The taskforce or contact person of the included CQR were asked to participate and share information on registered items, processes and indicators. RESULTS: Five nations agreed to collaborate: Australia, Denmark, Italy, the Netherlands and Sweden. Denmark, Netherlands and Sweden established a nationwide registry, collecting data on multiple tumor types, and various QI's. Australia and Italy included patients with ovarian cancer only. All nations had a different process to report feedback results to participating hospitals. CONCLUSION: CQRs serve the same purpose to improve quality of care but vary on different aspects. Although similarities are observed in the topics measured by the QI's, an international comparison was not feasible as numerators or denominators differ between registries. In order to compare on an international level it would be useful to harmonize these registries and to set an international standard to measure the quality of care with similar indicators.


Assuntos
Sistema de Registros , Humanos , Previsões , Itália , Países Baixos , Suécia/epidemiologia
3.
Klin Onkol ; 34(6): 477-480, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34911334

RESUMO

BACKGROUND: Primary breast lymphoma is a rare disease and accounts for 0.4-0.5% of malignant breast neoplasms and 1.7-2.2% of extra-nodal lymphomas, with diffuse large B-cell lymphoma (DLBCL) as the most common histologic subtype. CASE: A 47-year-old female with beta thalassemia presented with a lump of the left breast, redness, pain, and swelling of her left breast. Physical examination showed tender, red, swollen left breast. Laboratory findings show mild anemia and normal level of lactate dehydrogenase 329 U/L (normal range: 240-480 U/L). PET scan showed hypermetabolic mass with irregular margins covering the whole left breast quadrants with the size of 11.25 x 5.17cm with left pectoralis major, left parasternal, and left axillary hypermetabolic nodules. Histopathology and immunohistochemistry staining showed a non-germinal center B-cell-like subtype of DLBCL CD20+. We administered the R-CHOP regimen (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednison) every 3 weeks for 6 cycles. The response was complete remission. The patient tolerated the chemotherapy well and achieved long term complete remission. CONCLUSION: Primary breast lymphoma is a rare disease with the most common subtype is diffuse large B-cell lymphoma. Systemic chemother-apy R-CHOP is the treatment option for primary breast diffuse large B-cell lymphoma.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Neoplasias da Mama/diagnóstico por imagem , Ciclofosfamida/uso terapêutico , Doxorrubicina/uso terapêutico , Feminino , Humanos , Linfoma Difuso de Grandes Células B/diagnóstico por imagem , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons , Prednisona/uso terapêutico , Rituximab/uso terapêutico , Vincristina/uso terapêutico
5.
Gynecol Oncol ; 162(2): 331-338, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34147284

RESUMO

OBJECTIVES: The challenge when performing cytoreductive surgery (CRS) is to balance the benefits and risks. The aim of this study was to report short term postoperative morbidity and mortality in relation to surgical outcome in patients undergoing primary debulking surgery (PDS) or interval debulking (IDS) surgery in the Netherlands. METHODS: The Dutch Gynecological Oncology Audit (DGOA) was used for retrospective analysis. Patients undergoing PDS or IDS between January 1st, 2015 - December 31st, 2018 were included. Outcome was frequency of postoperative complications. Median time to adjuvant chemotherapy and severity of complications were related to outcome of CRS. Complications with Clavien-Dindo ≥3 were analyzed per region and case mix corrected. Statistical analysis was performed with R.Studio. RESULTS: 1027 patients with PDS and 1355 patients with IDS were included. Complications with re-invention were significantly higher in PDS compared to IDS (5.7% vs. 3.6%, p = 0.048). Complete cytoreduction was 69.7% in PDS and 62.1% IDS, p < 0.001. Time to adjuvant chemotherapy was 49 days in patients with complete CRS and a complication with re-intervention. Regional variation for severe complications showed one region outside confidence intervals. CONCLUSIONS: Higher complete cytoreduction rate in the PDS group indicates that the correct patients have been selected, but is associated with a higher percentage of complication with re-intervention. As result, time to start adjuvant chemotherapy is longer in this group. Maintaining a balance in aggressiveness of surgery and outcome of the surgical procedure with respect to severe complications is underlined. Bench marked data should be discussed nationally to improve this balance.


Assuntos
Procedimentos Cirúrgicos de Citorredução/efeitos adversos , Neoplasias Ovarianas/terapia , Complicações Pós-Operatórias/epidemiologia , Tempo para o Tratamento/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Quimioterapia Adjuvante/estatística & dados numéricos , Procedimentos Cirúrgicos de Citorredução/métodos , Feminino , Geografia , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Países Baixos/epidemiologia , Neoplasias Ovarianas/diagnóstico , Neoplasias Ovarianas/patologia , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Índice de Gravidade de Doença , Adulto Jovem
6.
Eur J Surg Oncol ; 47(7): 1691-1697, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33581966

RESUMO

INTRODUCTION: The Dutch Gynecological Oncology Audit (DGOA) was initiated in 2014 to serve as a nationwide audit, which registers the four most prevalent gynecological malignancies. This study presents the first results of clinical auditing for ovarian cancer in the Netherlands. METHODS: The Dutch Gynecological Oncology Audit is facilitated by the Dutch Institute of Clinical Auditing (DICA) and run by a scientific committee. Items are collected through a web-based registration based on a set of predefined quality indicators. Results of quality indicators are shown, and benchmarked information is given back to the user. Data verification was done in 2016. RESULTS: Between January 01, 2014 and December 31, 2018, 6535 patients with ovarian cancer were registered. The case ascertainment was 98.3% in 2016. The number of patients with ovarian cancer who start therapy within 28 days decreased over time from 68.7% in 2014 to 62.7% in 2018 (p < 0.001). The percentage of patients with primary cytoreductive surgery decreased over time (57.8%-39.7%, P < 0.001). However, patients with complete primary cytoreductive surgery improved over time (53.5%-69.1%, P < 0.001). Other quality indicators did not significantly change over time. CONCLUSION: The Dutch Gynecological Oncology Audit provides valuable data on the quality of care on patients with ovarian cancer in the Netherlands. Data show variation between hospitals with regard to pre-determined quality indicators. Results of 'best practices' will be shared with all participants of the clinical audit with the aim of improving quality of care nationwide.


Assuntos
Procedimentos Cirúrgicos de Citorredução/estatística & dados numéricos , Auditoria Médica/métodos , Neoplasias Ovarianas/cirurgia , Melhoria de Qualidade , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade , Países Baixos , Sistema de Registros
7.
Eur J Surg Oncol ; 47(1): 101-107, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-31128948

RESUMO

INTRODUCTION: The addition of hyperthermic intraperitoneal chemotherapy (HIPEC) to interval cytoreductive surgery (CRS) improves recurrence-free (RFS) and overall survival (OS) in patients with FIGO stage III ovarian cancer. We evaluated the effect of HIPEC on patient's health-related quality of life (HRQoL) in the OVHIPEC trial. MATERIALS AND METHODS: OVHIPEC was a multicentre, open-label, randomized phase III trial for patients with stage III ovarian cancer. Patients were randomly assigned (1:1) to receive interval CRS with or without HIPEC with cisplatin. HRQoL was assessed using the EORTC QLQ-C30, and the ovarian (QLQ-OV28) and colorectal cancer (QLQ-CR38) modules. HRQoL questionnaires were administered at baseline, after surgery, after end of treatment, and every three months thereafter. HRQoL was a secondary endpoint, with the prespecified focus on the QLQ-C30 summary score and symptom scores on fatigue, neuropathy and gastro-intestinal symptoms. HRQoL was analysed using linear and non-linear mixed effect models. RESULTS: In total, 245 patients were randomized. One-hundred-ninety-seven patients (80%) completed at least one questionnaire. No significant difference over time in the QLQ-C30 summary scores was observed between the study arms (p-values for linear and non-linear growth: p > 0.133). The pattern over time for fatigue, neuropathy and gastro-intestinal symptoms did not significantly differ between treatment arms. CONCLUSION: The addition of HIPEC to interval CRS does not negatively impact HRQoL in patients with stage III ovarian cancer who are treated with interval CRS due to the extent of disease. These HRQoL results, together with the improvement in RFS and OS, support the viability of HIPEC as an important treatment option in this patient population. CLINICALTRIALS. GOV NUMBER: NCT00426257. EUDRACT NUMBER: 2006-003466-34.


Assuntos
Procedimentos Cirúrgicos de Citorredução , Quimioterapia Intraperitoneal Hipertérmica , Neoplasias Ovarianas/terapia , Qualidade de Vida , Idoso , Bélgica , Carboplatina/administração & dosagem , Terapia Combinada , Feminino , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Países Baixos , Neoplasias Ovarianas/patologia , Paclitaxel/administração & dosagem , Inquéritos e Questionários
8.
Gynecol Oncol ; 159(3): 706-711, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33019981

RESUMO

OBJECTIVE: Decrease in skeletal muscle index (SMI) during neoadjuvant chemotherapy (NACT) has been associated with worse outcome in patients with advanced ovarian cancer. To validate these findings, we tested if a decrease in SMI was a prognostic factor for a homogenous cohort of patients who received NACT in the randomized phase 3 OVHIPEC-trial. METHODS: CT-scans were performed at baseline and after two cycles of neoadjuvant chemotherapy in stage III ovarian cancer patients. The SMI (skeletal muscle area in cm2 divided by body surface area in m2) was calculated using SliceOMatic software. The difference in SMI between both CT-scans (ΔSMI) was calculated. Cox-regression analyses were performed to analyze the independent effect of a difference in SMI (ΔSMI) on outcome. Log-rank tests were performed to plot recurrence-free (RFS) and overall survival (OS). The mean number of adverse events per patient were compared between groups using t-tests. RESULTS: Paired CT-scans were available for 212 out of 245 patients (87%). Thirty-four of 74 patients (58%) in the group with a decrease in ΔSMI and 73 of 138 of the patients (53%) in the group with stable/increase in ΔSMI had died. Median RFS and OS did not differ significantly (p = 0.297 and p = 0.764) between groups. Patients with a decrease in SMI experienced more pre-operative adverse events, and more grade 3-4 adverse events. CONCLUSION: Decreased SMI during neoadjuvant chemotherapy was not associated with worse outcome in patients with stage III ovarian cancer included in the OVHIPEC-trial. However, a strong association between decreasing SMI and adverse events was found.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Terapia Neoadjuvante/efeitos adversos , Recidiva Local de Neoplasia/epidemiologia , Neoplasias Ovarianas/terapia , Sarcopenia/epidemiologia , Idoso , Índice de Massa Corporal , Ensaios Clínicos Fase III como Assunto , Procedimentos Cirúrgicos de Citorredução , Intervalo Livre de Doença , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/etiologia , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto , Músculo Esquelético/diagnóstico por imagem , Recidiva Local de Neoplasia/prevenção & controle , Estadiamento de Neoplasias , Neoplasias Ovarianas/complicações , Neoplasias Ovarianas/diagnóstico , Neoplasias Ovarianas/mortalidade , Período Pré-Operatório , Prognóstico , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Retrospectivos , Medição de Risco/estatística & dados numéricos , Fatores de Risco , Sarcopenia/diagnóstico , Sarcopenia/etiologia , Tomografia Computadorizada por Raios X
9.
Orphanet J Rare Dis ; 15(1): 68, 2020 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-32143654

RESUMO

BACKGROUND: Pathophysiology of life-threatening acute metabolic decompensations (AMD) in propionic acidemia (PA) and isolated methylmalonic acidemia (MMA) is insufficiently understood. Here, we study the metabolomes of PA and MMA patients over time, to improve insight in which biochemical processes are at play during AMD. METHODS: Longitudinal data from clinical chemistry analyses and metabolic assays over the life-course of 11 PA and 13 MMA patients were studied retrospectively. Direct-infusion high-resolution mass spectrometry was performed on 234 and 154 remnant dried blood spot and plasma samples of PA and MMA patients, respectively. In addition, a systematic literature search was performed on reported biomarkers. All results were integrated in an assessment of biochemical processes at play during AMD. RESULTS: We confirmed many of the metabolite alterations reported in literature, including increases of plasma valine and isoleucine during AMD in PA patients. We revealed that plasma leucine and phenylalanine, and urinary pyruvic acid were increased during AMD in PA patients. 3-hydroxyisovaleric acid correlated positively with plasma ammonia. We found that known diagnostic biomarkers were not significantly further increased, while intermediates of the branched-chain amino acid (BCAA) degradation pathway were significantly increased during AMD. CONCLUSIONS: We revealed that during AMD in PA and MMA, BCAA and BCAA intermediates accumulate, while known diagnostic biomarkers remain essentially unaltered. This implies that these acidic BCAA intermediates are responsible for metabolic acidosis. Based on this, we suggest to measure plasma 3-hydroxyisovaleric acid and urinary ketones or 3-hydroxybutyric acid for the biochemical follow-up of a patient's metabolic stability.


Assuntos
Erros Inatos do Metabolismo dos Aminoácidos , Fenômenos Bioquímicos , Acidemia Propiônica , Humanos , Leucina , Ácido Metilmalônico , Estudos Retrospectivos
10.
Forensic Sci Int ; 309: 110215, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32113175

RESUMO

This article compares 290 post mortem case reports that were positive for carfentanil. All the cases were submitted to, and analyzed by, the toxicology department of the Office of the Chief Medical Examiner, Edmonton, Alberta, Canada. This study highlights the varied distribution of carfentanil in the body after death as a result of misadventure, i.e., these are accidental drug overdose cases. Post mortem samples were collected from more than one anatomical site and analysed for carfentanil using a validated liquid chromatography-tandem mass spectrometry method. Ante-mortem samples were available in 15 of these cases and were also analysed. Post mortem mean blood carfentanil concentrations were found to be 0.362 µg/L (femoral), 0.442 µg/L (iliac), 0.484 µg/L (cardiac) and 0.692 µg/L (subclavian). The mean vitreous humor carfentanil concentration was 0.238 µg/L; the mean urine carfentanil concentration was found to be 0.697 µg/L. Little difference was found between ligated and 'blindstick' femoral blood carfentanil concentrations. Whilst carfentanil can readily be detected in both vitreous humor and urine samples neither were found to correlate with blood concentrations, limiting their use in interpretation. This study demonstrates the importance of multi-site sample collection and subsequent analysis for a thorough post mortem toxicological investigation. The study also highlights the risks and limitations associated with the interpretation of post mortem analytical results concerning carfentanil.


Assuntos
Analgésicos Opioides/farmacocinética , Fentanila/análogos & derivados , Mudanças Depois da Morte , Adolescente , Adulto , Idoso , Analgésicos Opioides/sangue , Analgésicos Opioides/urina , Feminino , Fentanila/sangue , Fentanila/farmacocinética , Fentanila/urina , Toxicologia Forense , Humanos , Masculino , Pessoa de Meia-Idade , Overdose de Opiáceos , Detecção do Abuso de Substâncias , Espectrometria de Massas em Tandem , Corpo Vítreo/metabolismo , Adulto Jovem
11.
Vet Microbiol ; 220: 39-46, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29885799

RESUMO

Contagious agalactia is a mycoplasmosis that affects small ruminants, is associated with loss of milk production and high morbidity rates, and is highly deleterious to dairy industries. The etiological agents are four mycoplasma (sub)species, of which the relative importance depends on the countries and the animal host. Tetracyclines are non-expensive, broad-spectrum antimicrobials and are often used to control mastitis in dairy herds. However, the in vitro efficiency of tetracyclines against each of the etiological agents of contagious agalactia has been poorly assessed. The aims of this study were i) to compare the tetracycline susceptibilities of various field isolates, belonging to different mycoplasma (sub)species and subtypes, collected over the years from different clinical contexts in France or Spain, and ii) to investigate the molecular mechanisms behind the decreased susceptibility of some isolates to tetracyclines. The Minimum Inhibitory Concentrations (MICs) of tetracyclines were determined in vitro on a set of 120 isolates. Statistical analyses were run to define the significance of any observed differences in MICs distribution. As mutations in the genes encoding the tetracycline targets (rrs loci) are most often associated with increased tetracycline MICs in animal mycoplasmas, these genes were sequenced. The loss of susceptibility to tetracyclines after year 2010 is not significant and recent MICs are higher in M. agalactiae, especially isolates from mastitis cases, than in other etiological agents of contagious agalactia. The observed increases in MICs were not always associated with mutations in the rrs alleles which suggests the existence of other resistance mechanisms yet to be deciphered.


Assuntos
Antibacterianos/farmacologia , Farmacorresistência Bacteriana/genética , Infecções por Mycoplasma/veterinária , Mycoplasma agalactiae/efeitos dos fármacos , Mycoplasma agalactiae/genética , Tetraciclina/farmacologia , Animais , Feminino , Doenças das Cabras/tratamento farmacológico , Doenças das Cabras/microbiologia , Cabras/microbiologia , Mastite/microbiologia , Testes de Sensibilidade Microbiana , Mutação , Infecções por Mycoplasma/tratamento farmacológico , Mycoplasma agalactiae/isolamento & purificação , RNA Ribossômico 16S/genética , Ovinos/microbiologia , Doenças dos Ovinos/tratamento farmacológico , Doenças dos Ovinos/microbiologia
12.
Forensic Sci Int ; 284: 146-152, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29408723

RESUMO

This article compares 249 post mortem case reports that were positive for fentanyl/norfentanyl. All the cases were submitted to, and analyzed by, the toxicology department of the Office of the Chief Medical Examiner, Edmonton, Alberta, Canada. This study highlights the varied distribution of fentanyl in the body after death as a result of misadventure, i.e., these are accidental drug overdose cases as opposed to a study of analytical data resulting from fentanyl use/administration in a clinical environment and/or death as a result of suicide. Post mortem samples were collected from more than one anatomical site and analyzed for fentanyl and norfentanyl using liquid chromatography-tandem mass spectrometry. Ante-mortem samples were available in 4 of these cases and were also analyzed. Post mortem mean blood fentanyl concentrations were found to be 13.2ng/mL (femoral), 19.1ng/mL (iliac) and 42.0ng/mL (subclavian). For norfentanyl the mean concentrations were 4.6ng/mL (femoral), 4.6ng/mL (iliac) and 7.4ng/mL (subclavian). Mean vitreous fentanyl and norfentanyl concentrations were 10.8ng/mL and 3.5ng/mL respectively. Mean liver fentanyl and norfentanyl concentrations were found to be 185.5ng/g and 18.8ng/g respectively. This study demonstrates the importance of multi-site sample collection and subsequent analysis for a thorough post mortem toxicological investigation. The study also highlights the risks and limitations associated with the interpretation of post mortem analytical results concerning fentanyl.


Assuntos
Analgésicos Opioides/análise , Fentanila/análogos & derivados , Fentanila/análise , Mudanças Depois da Morte , Acidentes , Analgésicos Opioides/farmacocinética , Cromatografia Líquida , Overdose de Drogas , Fentanila/farmacocinética , Toxicologia Forense , Humanos , Fígado/química , Transtornos Relacionados ao Uso de Opioides , Espectrometria de Massas em Tandem , Corpo Vítreo/química
13.
Sci Rep ; 7(1): 13112, 2017 10 13.
Artigo em Inglês | MEDLINE | ID: mdl-29030642

RESUMO

Urea cycle enzyme deficiency (UCED) patients with hyperammonemia are treated with sodium benzoate (SB) and sodium phenylacetate (SPA) to induce alternative pathways of nitrogen excretion. The suggested guidelines supporting their use in the management of hyperammonemia are primarily based on non-analytic studies such as case reports and case series. Canine congenital portosystemic shunting (CPSS) is a naturally occurring model for hyperammonemia. Here, we performed cross-over, randomized, placebo-controlled studies in healthy dogs to assess safety and pharmacokinetics of SB and SPA (phase I). As follow-up safety and efficacy of SB was evaluated in CPSS-dogs with hyperammonemia (phase II). Pharmacokinetics of SB and SPA were comparable to those reported in humans. Treatment with SB and SPA was safe and both nitrogen scavengers were converted into their respective metabolites hippuric acid and phenylacetylglutamine or phenylacetylglycine, with a preference for phenylacetylglycine. In CPSS-dogs, treatment with SB resulted in the same effect on plasma ammonia as the control treatment (i.e. saline infusion) suggesting that the decrease is a result of volume expansion and/or forced diuresis rather than increased production of nitrogenous waste. Consequentially, treatment of hyperammonemia justifies additional/placebo-controlled trials in human medicine.


Assuntos
Hiperamonemia/tratamento farmacológico , Nitrogênio/sangue , Águas Salinas/uso terapêutico , Animais , Cães , Feminino , Hiperamonemia/sangue , Masculino , Fenilacetatos/efeitos adversos , Fenilacetatos/farmacocinética , Fenilacetatos/uso terapêutico , Distribuição Aleatória , Benzoato de Sódio/efeitos adversos , Benzoato de Sódio/farmacocinética , Benzoato de Sódio/uso terapêutico
14.
Leukemia ; 31(10): 2219-2227, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28119527

RESUMO

RUNX3, runt-domain transcription factor, is a master regulator of gene expression in major developmental pathways. It acts as a tumor suppressor in many cancers but is oncogenic in certain tumors. We observed upregulation of RUNX3 mRNA and protein expression in nasal-type extranodal natural killer (NK)/T-cell lymphoma (NKTL) patient samples and NKTL cell lines compared to normal NK cells. RUNX3 silenced NKTL cells showed increased apoptosis and reduced cell proliferation. Potential binding sites for MYC were identified in the RUNX3 enhancer region. Chromatin immunoprecipitation-quantitative PCR revealed binding activity between MYC and RUNX3. Co-transfection of the MYC expression vector with RUNX3 enhancer reporter plasmid resulted in activation of RUNX3 enhancer indicating that MYC positively regulates RUNX3 transcription in NKTL cell lines. Treatment with a small-molecule MYC inhibitor (JQ1) caused significant downregulation of MYC and RUNX3, leading to apoptosis in NKTL cells. The growth inhibition resulting from depletion of MYC by JQ1 was rescued by ectopic MYC expression. In summary, our study identified RUNX3 overexpression in NKTL with functional oncogenic properties. We further delineate that MYC may be an important upstream driver of RUNX3 upregulation and since MYC is upregulated in NKTL, further study on the employment of MYC inhibition as a therapeutic strategy is warranted.


Assuntos
Transformação Celular Neoplásica/genética , Subunidade alfa 3 de Fator de Ligação ao Core/fisiologia , Regulação Neoplásica da Expressão Gênica , Linfoma Extranodal de Células T-NK/genética , Neoplasias Nasais/genética , Proteínas Proto-Oncogênicas c-myc/fisiologia , Transcrição Gênica/genética , Apoptose , Azepinas/farmacologia , Sítios de Ligação , Divisão Celular , Linhagem Celular Tumoral , Subunidade alfa 3 de Fator de Ligação ao Core/antagonistas & inibidores , Subunidade alfa 3 de Fator de Ligação ao Core/genética , Elementos Facilitadores Genéticos , Genes Reporter , Vetores Genéticos , Humanos , Linfoma Extranodal de Células T-NK/etiologia , Linfoma Extranodal de Células T-NK/metabolismo , Linfoma Extranodal de Células T-NK/patologia , Terapia de Alvo Molecular , Neoplasias Nasais/etiologia , Neoplasias Nasais/metabolismo , Neoplasias Nasais/patologia , Mapeamento de Interação de Proteínas , Proteínas Proto-Oncogênicas c-myc/antagonistas & inibidores , Interferência de RNA , RNA Interferente Pequeno/genética , Proteínas Recombinantes de Fusão/metabolismo , Triazóis/farmacologia , Regulação para Cima
15.
Vet J ; 214: 96-101, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27387734

RESUMO

The minimum inhibitory concentration (MIC) and minimum mycoplasmacidal concentration (MMC) of 17 antimicrobials against 41 Spanish caprine isolates of Mycoplasma mycoides subsp. capri (Mmc) obtained from different specimens (milk, external auricular canal and semen) were determined using a liquid microdilution method. For half of the isolates, the MIC was also estimated for seven of the antimicrobials using an epsilometric test (ET), in order to compare both methods and assess the validity of ET. Mutations in genes gyrA, gyrB, parC and parE conferring fluoroquinolone resistance, which have been recently described in Mmc, were investigated using PCR. The anatomical origin of the isolate had no effect on its antimicrobial susceptibility. Moxifloxacin and doxycycline had the lowest MIC values. The rest of the fluoroquinolones studied (except norfloxacin), together with tylosin and clindamycin, also had low MIC values, although the MMC obtained for clindamycin was higher than for the other antimicrobials. For all the aminoglycosides, spiramycin and erythromycin, a notable level of resistance was observed. The ET was in close agreement with broth microdilution at low MICs, but not at intermediate or high MICs. The analysis of the genomic sequences revealed the presence of an amino acid substitution in codon 83 of the gene gyrA, which has not been described previously in Mmc.


Assuntos
Antibacterianos/farmacologia , Farmacorresistência Bacteriana , Doenças das Cabras/tratamento farmacológico , Mycoplasma mycoides/efeitos dos fármacos , Pleuropneumonia Contagiosa/tratamento farmacológico , Animais , Meato Acústico Externo/microbiologia , Feminino , Doenças das Cabras/microbiologia , Cabras , Masculino , Testes de Sensibilidade Microbiana/veterinária , Leite/microbiologia , Pleuropneumonia Contagiosa/microbiologia , Espanha
16.
Rev Sci Tech ; 35(3): 845-862, 2016 Dec.
Artigo em Espanhol, Inglês | MEDLINE | ID: mdl-28332645

RESUMO

The risk of zoonoses spreading from birds to humans is lower, quantitatively speaking, than the risk of transmission between other host groups, because the two taxonomic groups share fewer pathogens. Nevertheless, birds have a number of epidemiological characteristics that make them extremely important hosts in the transmission and maintenance of zoonoses, including their susceptibility to pathogens that are extremely hazardous to humans (such as highly pathogenic avian influenza virus, West Nile virus and Chlamydia psittaci) and their ability to travel long distances, especially in the case of migratory birds. The fact that the human diet includes poultry products (meat, eggs and their by-products) also means that most human cases of foodborne zoonoses are infections of avian origin. Lastly, close contact between humans and pet birds or urban birds leads to interactions of public health concern. This article sets out to describe the main factors that determine the role of birds in the epidemiology of zoonotic infections.


Le risque que les oiseaux transmettent des zoonoses à l'homme est moins élevé, au plan quantitatif, qu'entre hôtes d'autres catégories, car le nombre d'agents pathogènes affectant à la fois ces deux groupes taxonomiques est moindre. Cependant, certaines particularités épidémiologiques des oiseaux leur font jouer un rôle d'hôtes importants dans la persistance et la transmission de zoonoses : d'une part, leur sensibilité à des agents pathogènes dangereux pour l'homme (par exemple, le virus de l'influenza aviaire hautement pathogène, le virus de West Nile, Chlamydia psittaci) et, d'autre part, leur capacité à se déplacer sur de longues distances, notamment dans le cas des oiseaux migrateurs. En outre, les produits avicoles faisant partie des denrées alimentaires consommées par l'homme (viande de volaille, oeufs et produits dérivés), la majorité des cas de zoonoses d'origine alimentaire diagnostiqués chez l'homme sont d'origine aviaire. Enfin, les contacts étroits entre les humains et leurs oiseaux de compagnie ou avec des oiseaux des villes entraînent des interactions qui sont à prendre en compte en santé publique. Les auteurs décrivent les principales caractéristiques épidémiologiques des oiseaux jugées déterminantes par rapport aux infections zoonotiques.


El riesgo de transmisión de zoonosis de aves a humanos es menor, cuantitativamente hablando, que el que tiene lugar entre otros grupos de hospedadores, debido a que estos dos grupos taxonómicos comparten un menor número de agentes patógenos. No obstante, algunas particularidades epidemiológicas de las aves las convierten en hospedadores de gran importancia en el mantenimiento y la transmisión de zoonosis, como su capacidad de contraer infecciones por agentes patógenos peligrosos para los humanos (como el virus de la influenza aviar altamente patógena, el virus del Nilo Occidental o Chlamydia psittaci, entre otros) así como su gran capacidad de desplazamiento, especialmente en el caso de las aves migratorias. Además, el hecho de que la alimentación humana incluya productos avícolas (carne y huevos y productos derivados) hace que la mayoría de casos de zoonosis de origen alimentario diagnosticados en humanos sean infecciones de origen aviar. Por último, el estrecho contacto entre humanos y mascotas aviares o aves urbanas conlleva interacciones de interés para la salud pública. Este trabajo pretende describir los principales determinantes epidemiológicos de las aves en relación con las infecciones zoonósicas.


Assuntos
Zoonoses/epidemiologia , Zoonoses/transmissão , Migração Animal , Animais , Animais Selvagens , Aves , Doenças Transmissíveis Emergentes/epidemiologia , Doenças Transmissíveis Emergentes/transmissão , Dieta , Doenças Transmitidas por Alimentos/epidemiologia , Humanos , Animais de Estimação , Produtos Avícolas , Fatores de Risco
17.
Ir Vet J ; 68(1): 21, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26351565

RESUMO

BACKGROUND: Laboratory diagnostic techniques able to detect Mycoplasma agalactiae are essential in contagious agalactia in dairy goats. This study was designed: 1) to determine the detection limits of PCR and culture in goat milk samples, 2) to examine the effects of experimental conditions including the DNA extraction method, PCR technique and storage conditions (fresh versus frozen stored milk samples) on these methods and 3), to establish agreement between PCR and culture techniques using milk samples from goats with mastitis in commercial dairy herds. The study was conducted both on artificially inoculated and field samples. RESULTS: Our findings indicate that culture is able to detect M. agalactiae in goat milk at lower concentrations than PCR. Qualitative detection of M.agalactiae by culture and PCR was not affected by sample freezing, though the DNA extraction method used significantly affected the results of the different PCR protocols. When clinical samples were used, both techniques showed good agreement. CONCLUSIONS: The results from this study indicate that both culture and PCR are able to detect M. agalactiae in clinical goat mastitis samples. However, in bulk tank milk samples with presumably lower M. agalactiae concentrations, culture is recommended within the first 24 h of sample collection due to its lower limit of detection. To improve the diagnostic sensitivity of PCR in milk samples, there is a need to increase the efficiency of extracting DNA from milk samples using protocols including a previous step of enzymatic digestion.

18.
Tijdschr Psychiatr ; 56(4): 228-36, 2014.
Artigo em Holandês | MEDLINE | ID: mdl-24807382

RESUMO

BACKGROUND: By means of repeated, well-supported measurements of clinical dynamic indicators from the Historical, Clinical and Future - 30 (HKT-30) it is possible to monitor behavioural changes on the basis of risks and needs. The addition of extra score parameters allows us to distinguish client-specific risks and needs. In treatment evaluation it is important to visualise changes in these indicators of treatment evaluation because they are the key to the clinical decision-making process that determines further treatment and rehabilitation. AIM: To investigate whether HKT-30 indicators can be used to measure and visualise behavioral changes for the purpose of treatment evaluation. METHOD: A case study is used to illustrate how clinicians at the Forensic Psychiatric Clinic (FPK), De Woenselse Poort, ascertain risks, needs and changes and clarify these factors for the purpose of treatment evaluation and clinical decision-making. RESULTS: Routine treatment evaluation aided by visualised clinical HKT-30 indicators give the treatment team and the client a clearer picture of the behavioral changes for which the forensic treatment was prescribed. This evaluation provides significant starting-points for clinical decision making. CONCLUSION: Routine treatment evaluation along with a suitably adjusted HKT-30 make behavioural changes visible, render clinical decisions more transparent and provide valuable starting-points for a dialogue with the client about his treatment.


Assuntos
Tomada de Decisões , Psiquiatria Legal/instrumentação , Transtornos Mentais/terapia , Avaliação de Resultados da Assistência ao Paciente , Medição de Risco , Adulto , Psiquiatria Legal/métodos , Humanos , Masculino , Transtornos Mentais/psicologia , Avaliação das Necessidades , Valor Preditivo dos Testes , Escalas de Graduação Psiquiátrica , Psicometria/instrumentação , Psicometria/métodos , Psicoterapia/métodos , Fatores de Risco , Comportamento de Redução do Risco , Comportamento Social
20.
Scanning ; 36(1): 21-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-23460493

RESUMO

This work proposes a method of roughness parameter (RP) selection for novel manufacturing processes or processes where little knowledge exists about which RPs are important. The method selects a single parameter to represent a group of highly correlated parameters. Single point incremental forming (SPIF) is used as the case study for the manufacturing process. This methodology was successful in reducing the number of RPs investigated from 18 to 8 in the case study.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...