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1.
Pituitary ; 27(1): 23-32, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38151529

RESUMO

Isolated adrenocorticotropic hormone deficiency (IAD) is considered to be a rare disease. Due to the nonspecific clinical presentation, precise data on the prevalence and incidence are lacking. In this systematic review, we aimed to analyse the clinical characteristics, association with autoimmune diseases, and management of acquired idiopathic IAD cases. A structured search was conducted after developing a search strategy combining terms for acquired (idiopathic) IAD. Articles describing an adult case with a diagnosis of ACTH deficiency using dynamic testing, no deficiency of other pituitary axes, and MRI of the brain/pituitary protocolled as normal, were included. Exclusion criteria were cases describing congenital IAD, cases with another aetiology for IAD, and articles where full text was not available. In total 42 articles were included, consisting of 85 cases of acquired idiopathic IAD. Distribution by sex was approximately equal (F:M; 47:38). Lethargy was the most common presenting symptom (38%), followed by weight loss (25%), anorexia (22%), and myalgia/arthralgia (12%). Eight cases (9.5%) presented with an Addison crisis. 31% of cases had an autoimmune disease at diagnosis of which Hashimoto hypothyroidism was the most frequent. Data about follow-up was scarce; dynamic testing was repeated in 4 cases of which 2 showed recovery of the adrenal axis. We report the largest case series of acquired idiopathic IAD to date. Our systematic review highlights the lack of a clear definition and diagnostic work-up. Based on the findings in this review a proposition is made for a flowchart to diagnose acquired idiopathic IAD.


Assuntos
Insuficiência Adrenal , Doenças do Sistema Endócrino , Doenças Genéticas Inatas , Hipoglicemia , Adulto , Humanos , Insuficiência Adrenal/etiologia , Hormônio Adrenocorticotrópico
2.
Acta Chir Belg ; 120(4): 257-264, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31008690

RESUMO

Objectives: The aim of this study is to evaluate the use of pancreatic volumetric assessment to predict exocrine and endocrine insufficiency after pancreaticoduodenectomy.Methods: Thirty-seven patients who underwent pancreaticoduodenectomy were included in the study. Endocrine function was assessed in all patients without a history of diabetes using an oral glucose tolerance test. A 13C-labeled mixed triglyceride (MTG) breath test evaluated exocrine function before and after resection. Volumetric measurements were performed on CT or MRI.Results: The volumetric measurements could not predict pre- or postoperative diabetes. Moreover, the resected volume was significantly lower in patients who developed diabetes after resection. Comparing patients with a normal and disturbed postoperative MTG, postoperative volumes and parenchymal thickness were significantly different. The parenchymal thickness on postoperative imaging is withheld as a predictive factor (OR = .85 [95% CI .71-1.01], p = .049). The best cutoff value to predict exocrine insufficiency is a parenchymal thickness of less than 11.4 mm (AUC = .76, p = .025, sensitivity = 88.9%, specificity = 70.0%).Conclusions: Pancreatic remnant volumetry and parenchymal thickness measurement after pancreaticoduodenectomy are correlated with exocrine insufficiency, but with limited predictive value. None of the preoperative measurements are withheld to predict postoperative exocrine function. Pre- and postoperative volumetry appear to have no use in predicting postoperative diabetes.


Assuntos
Testes Respiratórios/métodos , Neoplasias Pancreáticas/cirurgia , Pancreaticoduodenectomia/efeitos adversos , Complicações Pós-Operatórias/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Humanos , Pessoa de Meia-Idade , Período Pós-Operatório , Estudos Retrospectivos
3.
Int J Obes (Lond) ; 41(11): 1615-1620, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28720876

RESUMO

OBJECTIVE: Type 2 diabetes (T2DM) is known to be underdiagnosed. Tests for diagnosis include fasting plasma glucose (FPG), oral glucose tolerance test (OGTT) and HbA1c. HbA1c can be tested in non-fasting conditions. Therefore, general practitioners almost no longer execute OGTT's. We evaluated the performance of OGTT versus HbA1c in a population consisting of overweight and obese subjects, which can be considered a 'high risk' population. RESEARCH DESIGN AND METHODS: A total of, 1241 overweight and obese subjects without a history of diabetes (male/female: 375/866, age 44±13 years, body mass index 38.0±6.1 kg m-2) were tested for glucose tolerance status using FPG, OGTT and HbA1c. RESULTS: Exactly, 46.8% were found to have prediabetes and 11.9% were newly diagnosed with T2DM (male/female=18.9/8.9%) using ADA criteria. Testing only HbA1c would have resulted in 78 subjects being diagnosed with T2DM, but 47.3% of newly diagnosed patients would have been missed if OGTT would not have been done. Exactly 581 subjects were diagnosed with prediabetes, 1.4% subjects had impaired fasting glucose (IFG) 30.5% had impaired glucose tolerance (IGT), 5.1% subjects had a combined IFG+IGT, and 9.8% had an isolated elevated HbA1c (5.7-6.4%). Of the 581 subjects with prediabetes, 257 had an HbA1c <5.7%. Therefore, 44.2% subjects would have been missed when OGTT would not have been done. CONCLUSION: In a population with only overweight and obese adult subjects, 46.8% were diagnosed with prediabetes and 11.9% were newly diagnosed with diabetes. Exactly, 5.6 and 20.7% of total population met the diagnostic criteria of the OGTT for diabetes and prediabetes, respectively, but did not meet the diagnostic criteria of the HbA1c. These data suggest that not performing an OGTT results in significant underdiagnose of T2DM in an overweight and obese adult population.


Assuntos
Glicemia/metabolismo , Diabetes Mellitus Tipo 2/sangue , Hemoglobinas Glicadas/metabolismo , Estado Pré-Diabético/sangue , Adulto , Bélgica/epidemiologia , Índice de Massa Corporal , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/fisiopatologia , Feminino , Teste de Tolerância a Glucose , Humanos , Masculino , Pessoa de Meia-Idade , Estado Pré-Diabético/epidemiologia , Estado Pré-Diabético/fisiopatologia , Prevalência , Fatores de Risco , População Branca
4.
Epidemiol Infect ; 144(1): 183-8, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26113514

RESUMO

The incidence of invasive infections due to Neisseria meningitidis in Israel is about 1/100 000 population annually. Three cases of meningococcal meningitis were reported in employees at a single plant; the first case appeared in March 2013 and the second and third cases appeared in December, almost 9 months later. N. meningitidis serogroup B was isolated from cerebrospinal fluid samples. Multilocus sequence typing assigned the three meningococcal isolates to ST10418, a new sequence type and a member of the ST32 clonal complex. The clonality was confirmed by performance of pulsed-field gel electrophoresis. Post-exposure antibiotic prophylaxis was administered to close contacts of the first case. Upon the diagnosis of the additional two cases, post-exposure prophylaxis was administered to all the plant employees. This report demonstrates the importance of combining public health measures and advanced laboratory studies to confirm clonality and to prevent further disease spread in a closed setting.


Assuntos
Antibacterianos/uso terapêutico , Meningite Meningocócica/líquido cefalorraquidiano , Meningite Meningocócica/tratamento farmacológico , Neisseria meningitidis Sorogrupo B/genética , Profilaxia Pós-Exposição , Adulto , Análise por Conglomerados , Eletroforese em Gel de Campo Pulsado , Humanos , Israel , Masculino , Meningite Meningocócica/microbiologia , Pessoa de Meia-Idade , Tipagem de Sequências Multilocus , Neisseria meningitidis Sorogrupo B/isolamento & purificação
5.
J Appl Microbiol ; 116(5): 1315-21, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24428402

RESUMO

AIM: Enterobacter cloacae complex bacteria are of both clinical and environmental importance. Phenotypic methods are unable to distinguish between some of the species in this complex, which often renders their identification incomplete. The goal of this study was to develop molecular assays to identify Enterobacter hormaechei and Ent. cloacae genetic cluster III which are relatively frequently encountered in clinical material. METHODS AND RESULTS: The molecular assays developed in this study are qPCR technology based and served to identify both Ent. hormaechei and Ent. cloacae genetic cluster III. qPCR results were compared to hsp60 sequence analysis. Most clinical isolates were assigned to Ent. hormaechei subsp. steigerwaltii and Ent. cloacae genetic cluster III. The latter was proportionately more frequently isolated from bloodstream infections than from other material (P < 0·05). CONCLUSION: The qPCR assays detecting Ent. hormaechei and Ent. cloacae genetic cluster III demonstrated high sensitivity and specificity. SIGNIFICANCE AND IMPACT OF THE STUDY: The presented qPCR assays allow accurate and rapid identification of clinical isolates of the Ent. cloacae complex. The improved identifications obtained can specifically assist analysis of Ent. hormaechei and Ent. cloacae genetic cluster III in nosocomial outbreaks and can promote rapid environmental monitoring. An association was observed between Ent. cloacae cluster III and systemic infection that deserves further attention.


Assuntos
Enterobacter cloacae/isolamento & purificação , Enterobacter/isolamento & purificação , Reação em Cadeia da Polimerase em Tempo Real/métodos , Chaperonina 60/genética , Enterobacter/genética , Enterobacter cloacae/genética , Análise de Sequência de DNA
6.
Rev Med Liege ; 69(4): 200-9, 2014 Apr.
Artigo em Francês | MEDLINE | ID: mdl-24923100

RESUMO

Cardiovascular disease (CVD) is the main cause of premature mortality in Europe. The burden of CVD could be reduced by controlling the major modifiable CVD risk factors (dyslipidaemia, arterial hypertension, hyperglycaemia, smoking, and physical inactivity) through lifestyle and dietary changes and appropriate drug therapies. The objective of this article is to assess the level of target achievement for key modifiable CVD risk factors in Belgium by referring to the data from four recent studies. The overall results show that the main CVD risk factors are poorly controlled in patients with established CVD and in patients at high CVD risk. Therapeutic targets may be incompletely reached because of the suboptimal implementation of European guidelines for CVD prevention in routine clinical practice (insufficient lifestyle and dietary adaptations; poor applications of drug therapy to control blood pressure, dyslipidaemia and hyperglycaemia) or because of the insufficient efficacy of currently available treatment options in some patients. This review provides clear and updated evidence for non-target achievement for all major risk factors, with four different study designs and inclusion criteria; it highlights the need for a more comprehensive and intensive application of recommendations of the European guidelines for CVD prevention in Belgium.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Guias de Prática Clínica como Assunto , Bélgica , Doenças Cardiovasculares/etiologia , Humanos , Estilo de Vida , Fatores de Risco , Comportamento de Redução do Risco
7.
Clin Exp Immunol ; 171(1): 82-90, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23199327

RESUMO

In first-degree relatives of type 1 diabetic patients, we investigated whether diabetes risk assessment solely based on insulinoma antigen 2 (IA-2) and zinc transporter 8 (ZnT8) antibody status (IA-2A, respectively, ZnT8A) is as effective as screening for three or four autoantibodies [antibodies against insulin (IAA), glutamate decarboxylase 65 kDa (GAD) glutamate decarboxylase autoantibodies (GADA) and IA-2A with or without ZnT8A] in identifying children, adolescents and adults who progress rapidly to diabetes (within 5 years). Antibodies were determined by radiobinding assays during follow-up of 6444 siblings and offspring aged 0-39 years at inclusion and recruited consecutively by the Belgian Diabetes Registry. We identified 394 persistently IAA(+) , GADA(+) , IA-2A(+) and/or ZnT8A(+) relatives (6·1%). After a median follow-up time of 52 months, 132 relatives developed type 1 diabetes. In each age category tested (0-9, 10-19 and 20-39 years) progression to diabetes was significantly quicker in the presence of IA-2A and/or ZnT8A than in their joint absence (P < 0·001). Progression rate was age-independent in IA-2A(+) and/or ZnT8A(+) relatives but decreased with age if only GADA and/or IAA were present (P = 0·008). In the age group mainly considered for immune interventions until now (10-39 years), screening for IA-2A and ZnT8A alone identified 78% of the rapid progressors (versus 75% if positive for ≥ 2 antibodies among IAA, GADA, IA-2A and ZnT8A or versus 62% without testing for ZnT8A). Screening for IA-2A and ZnT8A alone allows identification of the majority of rapidly progressing prediabetic siblings and offspring regardless of age and is more cost-effective to select participants for intervention trials than conventional screening.


Assuntos
Autoanticorpos/sangue , Proteínas de Transporte de Cátions/imunologia , Diabetes Mellitus Tipo 1/imunologia , Progressão da Doença , Estado Pré-Diabético/sangue , Proteínas Tirosina Fosfatases Classe 8 Semelhantes a Receptores/imunologia , Adolescente , Autoanticorpos/economia , Bélgica , Glicemia/imunologia , Criança , Pré-Escolar , Diabetes Mellitus Tipo 1/sangue , Família , Feminino , Glutamato Descarboxilase/imunologia , Humanos , Insulina/imunologia , Masculino , Estado Pré-Diabético/imunologia , Sistema de Registros , Risco , Transportador 8 de Zinco
8.
Infection ; 41(4): 791-8, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23475472

RESUMO

AIM: To describe the dynamics in the incidence of childhood invasive meningococcal disease (IMD) in Israel during a 22-year period (1989-2010). METHODS: A longitudinal prospective surveillance in all 27 medical centers with pediatric services in Israel. All cases of children <15 years old with positive blood/cerebrospinal fluid (CSF) culture for Neisseria meningitidis were reported. Demographic, clinical, and bacteriological data were recorded. Meningococcal vaccine was not routinely given to Israeli children during the study period. RESULTS: The mean age ± standard deviation (SD) among the 743 cases was 40.7 ± 40.2 months. The mean yearly incidence/100,000 was 2.0 ± 0.8. Age-specific incidences were 8.7 ± 2.8, 2.9 ± 1.5, and 0.8 ± 0.5 for children <1, 1-4, and >4 years old, respectively. The overall incidence decreased significantly from 3.7 in 1989 to 1.5 in 2010. Meningitis constituted 69.2 % of all cases. The most common serogroups were: B (76.9 %), C (10.9 %), Y (8.0 %), and W(135) (2.9 %). 78.6 % of all serogroup B isolates were from children <5 years old (p < 0.01). Serogroup C was found mainly in children ≥5 years old (63.4 %). The case fatality rates (CFRs) for children <1, 1-4, >4 years old, and the total study population were 9.2, 12.3, 7.7, and 9.9 %, respectively. CFRs were higher for children without meningitis (14.9 %) compared to children with meningitis (7.9 %) (p < 0.01). CONCLUSIONS: Overall, and for serogroups B and W135, childhood IMD rates decreased significantly in Israel during the study period, without routine vaccine usage. The most common serogroup in all age groups was B, which was most prevalent in children <5 years old. No change in the trend of the overall CFR was noted during the study period.


Assuntos
Infecções Meningocócicas/epidemiologia , Neisseria meningitidis/isolamento & purificação , Adolescente , Sangue/microbiologia , Líquido Cefalorraquidiano/microbiologia , Criança , Pré-Escolar , Feminino , Humanos , Incidência , Lactente , Israel/epidemiologia , Estudos Longitudinais , Masculino , Meningites Bacterianas/epidemiologia , Neisseria meningitidis/classificação , Estudos Prospectivos , Sepse/epidemiologia , Sorotipagem
9.
Euro Surveill ; 18(18): 20471, 2013 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-23725776

RESUMO

Following a bloodstream infection in June 2011 with Ralstonia mannitolilytica in a premature infant treated with a humidifying respiratory therapy device, an investigation was initiated at the Hadassah Medical Centres in Jerusalem. The device delivers a warmed and humidified mixture of air and oxygen to patients by nasal cannula. The investigation revealed colonisation with R. mannitolilytica of two of 15 patients and contamination of components of five of six devices deployed in the premature units of the Hadassah hospitals. Ten isolates from the investigation were highly related and indistinguishable from isolates described in an outbreak in 2005 in the United States (US). Measures successful in containing the US outbreak were not included in user instructions provided to our hospitals by the distributor of the device.


Assuntos
Contaminação de Equipamentos , Infecções por Bactérias Gram-Negativas/etiologia , Umidade , Oxigenoterapia/instrumentação , Ralstonia pickettii/isolamento & purificação , Infecções Respiratórias/etiologia , Antibacterianos/uso terapêutico , Colistina/uso terapêutico , Surtos de Doenças/estatística & dados numéricos , Desinfecção/métodos , Farmacorresistência Bacteriana , Infecções por Bactérias Gram-Negativas/tratamento farmacológico , Infecções por Bactérias Gram-Negativas/epidemiologia , Infecções por Bactérias Gram-Negativas/microbiologia , Humanos , Umidade/efeitos adversos , Recém-Nascido , Recém-Nascido Prematuro , Israel/epidemiologia , Oxigenoterapia/efeitos adversos , Ralstonia pickettii/crescimento & desenvolvimento , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/epidemiologia , Infecções Respiratórias/microbiologia
10.
J Vet Cardiol ; 49: 38-43, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37633187

RESUMO

A 10-month-old female spayed Scottish Fold was referred to cardiology for incidental radiographic cardiomegaly. Echocardiography was suspicious for a right atrial or right auricular aneurysm. The differential diagnosis also included peritoneal-pericardial diaphragmatic hernia, mass lesion (cyst, granuloma, or neoplasia), or cardiac malformation. A giant right atrial aneurysm associated with a persistent left cranial vena cava was subsequently confirmed with computed tomography.


Assuntos
Aneurisma , Fibrilação Atrial , Doenças do Gato , Cardiopatias Congênitas , Feminino , Gatos , Animais , Fibrilação Atrial/veterinária , Veia Cava Superior/diagnóstico por imagem , Veia Cava Superior/anormalidades , Veia Cava Superior/patologia , Aneurisma/complicações , Aneurisma/diagnóstico por imagem , Aneurisma/veterinária , Cardiopatias Congênitas/diagnóstico , Cardiopatias Congênitas/veterinária , Cardiomegalia/veterinária , Doenças do Gato/diagnóstico por imagem
11.
Epidemiol Infect ; 140(8): 1446-53, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22040482

RESUMO

The aim of the present study was to assess the recent trends in the epidemiology of non-typhoid Salmonella in Israel using a sentinel laboratory-based surveillance network. Between 1999 and 2009, 8758 Salmonella stool isolates were reported by five sentinel laboratories. There was a significant decrease in the incidence rate of Salmonella isolates from 70·5/100,000 in 1999 to 21·6/100,000 in 2005 followed by a slight increase to 30·3/100,000 in 2009. Of all Salmonella, 64·3% were isolated from children in the 0-4 years age group. Up to 2008, S. Enteritidis was the most prevalent serotype and in 2009 S. Infantis emerged as the most common Salmonella serotype. The decrease in the incidence of S. Enteritidis and S. Typhimurium and increase in S. Infantis among humans were associated with a similar trend among breeding flocks, which followed significant preventive interventions conducted against S. Enteritidis and S. Typhimurium infections in poultry. Tight surveillance and education of food handlers and consumers should be enhanced to reduce the foodborne transmission of Salmonella in Israel.


Assuntos
Infecções por Salmonella/epidemiologia , Infecções por Salmonella/microbiologia , Salmonella/classificação , Salmonella/isolamento & purificação , Adolescente , Adulto , Idoso , Antibacterianos/farmacologia , Criança , Pré-Escolar , Farmacorresistência Bacteriana , Feminino , Humanos , Lactente , Israel/epidemiologia , Masculino , Pessoa de Meia-Idade , Salmonella/efeitos dos fármacos , Sorotipagem , Fatores de Tempo , Adulto Jovem
12.
Euro Surveill ; 17(8)2012 Feb 23.
Artigo em Inglês | MEDLINE | ID: mdl-22401504

RESUMO

A substantial epidemic of Mycoplasma pneumonia infection was reported in late 2011 in some European countries. We report here an epidemic of M. pneumonia infection that began in Jerusalem during 2010 and is still ongoing. This report complements current information on what might be a worldwide epidemic of M. pneumoniae infection that might require substantial coordinated international public health intervention.


Assuntos
Infecções por Mycoplasma/diagnóstico , Infecções por Mycoplasma/epidemiologia , Mycoplasma pneumoniae/isolamento & purificação , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Epidemias , Feminino , Hospitais de Ensino , Humanos , Lactente , Recém-Nascido , Israel/epidemiologia , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Infecções por Mycoplasma/microbiologia , Reação em Cadeia da Polimerase em Tempo Real , Adulto Jovem
13.
Cancer Res Commun ; 2(11): 1388-1403, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36713812

RESUMO

While multiple transcription factors (TFs) have been recognized to drive epithelial-mesenchymal transition (EMT) in cancer, their interdependence and context-dependent functions are poorly understood. In this study, we show that FOXQ1 and SNAI1 act as independent TFs within the EMT program with a shared ability to upregulate common EMT TFs without reciprocally impacting the expression of one another. Despite this independence, human mammary epithelial cells (HMLE) with ectopic expression of either FOXQ1 or SNAI1 share a common gene set that is enriched for a DDR2 coexpression signature. Further analysis identified DDR2 as the most upregulated receptor tyrosine kinase and a shared downstream effector of FOXQ1 and SNAI1 in triple-negative breast cancer (TNBC) cell lines. Alteration of DDR2 expression in either FOXQ1 or SNAI1 driven EMT models or in TNBC cells resulted in a profound change of cell motility without significantly impacting EMT marker expression, cell morphology, or the stem cell population. Lastly, we demonstrated that knockdown of DDR2 in the FOXQ1-driven EMT model and TNBC cell line significantly altered the global metabolic profile, including glutamine-glutamate and Aspartic acid recycling.


Assuntos
Receptor com Domínio Discoidina 2 , Neoplasias de Mama Triplo Negativas , Humanos , Linhagem Celular Tumoral , Neoplasias de Mama Triplo Negativas/genética , Transição Epitelial-Mesenquimal/genética , Fatores de Transcrição/genética , Receptores Proteína Tirosina Quinases , Fatores de Transcrição Forkhead/genética , Fatores de Transcrição da Família Snail/genética
14.
Nat Commun ; 13(1): 6548, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-36319643

RESUMO

Aberrant expression of the Forkhead box transcription factor, FOXQ1, is a prevalent mechanism of epithelial-mesenchymal transition (EMT) and metastasis in multiple carcinoma types. However, it remains unknown how FOXQ1 regulates gene expression. Here, we report that FOXQ1 initiates EMT by recruiting the MLL/KMT2 histone methyltransferase complex as a transcriptional coactivator. We first establish that FOXQ1 promoter recognition precedes MLL complex assembly and histone-3 lysine-4 trimethylation within the promoter regions of critical genes in the EMT program. Mechanistically, we identify that the Forkhead box in FOXQ1 functions as a transactivation domain directly binding the MLL core complex subunit RbBP5 without interrupting FOXQ1 DNA binding activity. Moreover, genetic disruption of the FOXQ1-RbBP5 interaction or pharmacologic targeting of KMT2/MLL recruitment inhibits FOXQ1-dependent gene expression, EMT, and in vivo tumor progression. Our study suggests that targeting the FOXQ1-MLL epigenetic axis could be a promising strategy to combat triple-negative breast cancer metastatic progression.


Assuntos
Neoplasias da Mama , Segunda Neoplasia Primária , Feminino , Humanos , Neoplasias da Mama/genética , Linhagem Celular Tumoral , Transição Epitelial-Mesenquimal/fisiologia , Fatores de Transcrição Forkhead/metabolismo , Regulação Neoplásica da Expressão Gênica , Segunda Neoplasia Primária/genética , Proteína de Leucina Linfoide-Mieloide/metabolismo , Melanoma Maligno Cutâneo
15.
Oncogene ; 40(46): 6430-6442, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34608266

RESUMO

The epithelial-to-mesenchymal transition (EMT) has been recognized as a driving force for tumor progression in breast cancer. Recently, our group identified the RNA Binding Motif Single Stranded Interacting Protein 3 (RBMS3) to be significantly associated with an EMT transcriptional program in breast cancer. Additional expression profiling demonstrated that RBMS3 was consistently upregulated by multiple EMT transcription factors and correlated with mesenchymal gene expression in breast cancer cell lines. Functionally, RBMS3 was sufficient to induce EMT in two immortalized mammary epithelial cell lines. In triple-negative breast cancer (TNBC) models, RBMS3 was necessary for maintaining the mesenchymal phenotype and invasion and migration in vitro. Loss of RBMS3 significantly impaired both tumor progression and spontaneous metastasis in vivo. Using a genome-wide approach to interrogate mRNA stability, we found that ectopic expression of RBMS3 upregulates many genes that are resistant to degradation following transcriptional blockade by actinomycin D (ACTD). Specifically, RBMS3 was shown to interact with the mRNA of EMT transcription factor PRRX1 and promote PRRX1 mRNA stability. PRRX1 is required for RBMS3-mediated EMT and is partially sufficient to rescue the effect of RBMS3 knockdown in TNBC cell lines. Together, this study identifies RBMS3 as a novel and common effector of EMT, which could be a promising therapeutic target for TNBC treatment.


Assuntos
Proteínas de Homeodomínio/química , Proteínas de Homeodomínio/genética , Proteínas de Ligação a RNA/genética , Transativadores/genética , Neoplasias de Mama Triplo Negativas/patologia , Animais , Linhagem Celular Tumoral , Transição Epitelial-Mesenquimal , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Células MCF-7 , Camundongos , Invasividade Neoplásica , Metástase Neoplásica , Transplante de Neoplasias , Estabilidade de RNA , Proteínas de Ligação a RNA/metabolismo , Transativadores/metabolismo , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/metabolismo , Regulação para Cima
16.
Diabetologia ; 53(1): 36-44, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19898832

RESUMO

AIMS/HYPOTHESIS: The aim of the study was to investigate the use of hyperglycaemic clamp tests to identify individuals who will develop diabetes among insulinoma-associated protein-2 antibody (IA-2A)-positive first-degree relatives (IA-2A(+) FDRs) of type 1 diabetic patients. METHODS: Hyperglycaemic clamps were performed in 17 non-diabetic IA-2A(+) FDRs aged 14 to 33 years and in 21 matched healthy volunteers (HVs). Insulin and C-peptide responses were measured during the first (5-10 min) and second (120-150 min) release phase, and after glucagon injection (150-160 min). Clamp-induced C-peptide release was compared with C-peptide release during OGTT. RESULTS: Seven (41%) FDRs developed diabetes 3-63 months after their initial clamp test. In all phases they had lower C-peptide responses than non-progressors (p < 0.05) and HVs (p < 0.002). All five FDRs with low first-phase release also had low second-phase release and developed diabetes 3-21 months later. Two of seven FDRs with normal first-phase but low second-phase release developed diabetes after 34 and 63 months, respectively. None of the five FDRs with normal C-peptide responses in all test phases has developed diabetes so far (follow-up 56 to 99 months). OGTT-induced C-peptide release also tended to be lower in progressors than in non-progressors or HVs, but there was less overlap in results between progressors and the other groups using the clamp. CONCLUSIONS/INTERPRETATION: Clamp-derived functional variables stratify risk of diabetes in IA-2A(+) FDRs and may more consistently identify progressors than OGTT-derived variables. A low first-phase C-peptide response specifically predicts impending diabetes while a low second-phase response may reflect an earlier disease stage. TRIAL REGISTRATION: ClinicalTrials.gov NCT00654121 FUNDING: The insulin trial was financially supported by Novo Nordisk Pharma nv.


Assuntos
Autoanticorpos/sangue , Diabetes Mellitus/epidemiologia , Adolescente , Adulto , Peptídeo C/sangue , Diabetes Mellitus/genética , Diabetes Mellitus Tipo 1/genética , Diabetes Mellitus Tipo 1/imunologia , Família , Técnica Clamp de Glucose , Antígenos HLA-DQ/genética , Humanos , Hiperglicemia , Insulina/sangue , Anamnese , Valores de Referência , Medição de Risco , Adulto Jovem
17.
Diabetologia ; 53(4): 614-23, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20225393

RESUMO

AIMS/HYPOTHESIS: The aim of the study was to examine the 48 month outcome of treating recent-onset type 1 diabetic patients for 6 days with humanised CD3-antibody, ChAglyCD3. METHODS: Eighty patients, aged 12-39 years, were recruited for a phase 2 multicentre trial and randomised to placebo (n=40) or ChAglyCD3 (n=40) treatment by a third party member; participants and care-givers were blinded. The change in insulin dose (U kg(-1)day(-1)) over 48 months was chosen as primary endpoint and compared in 31 placebo-and 33 ChAglyCD3-treated patients. Adverse events were followed in 35 and 38 patients, respectively. RESULTS: Treatment with ChAglyCD3 delayed the rise in insulin requirements of patients with recent-onset diabetes and reduced its amplitude over 48 months (+0.09 vs +0.32 U kg(-1)day(-1) in the placebo group). Using multivariate analysis this effect was correlated with higher baseline residual beta cell function and a younger age. It was associated with better outcome variables in subgroups selected according to these variables. In the ChAglyCD3 subgroup with higher initial beta cell function, 0/11 patients became C-peptide-negative over 48 months vs 4/9 in the corresponding placebo subgroup. In the subgroup aged <27 years old, antibody treatment preserved initial beta cell function for 36 months (vs >80% decline within 24 months in the placebo subgroup <27 years old), resulted in lower HbA1c concentrations and tended to reduce glycaemic variability (p=0.08). No longterm adverse events were observed. CONCLUSIONS/INTERPRETATION: A 6 day ChAglyCD3 treatment can suppress the rise in insulin requirements of recent-onset type 1 diabetic patients over 48 months, depending on their age and initial residual beta cell function. In younger patients this effect is associated with reduced deterioration of metabolic variables. These observations help to define inclusion criteria for prevention trials. TRIAL REGISTRATION: ClinicalTrials.gov NCT00627146 FUNDING: Center grants from the Juvenile Diabetes Research Foundation (4-2001-434, 4-2005-1327) and grants from the Belgian Fund for Scientific Research-Flanders and from Brussels Free University-VUB.


Assuntos
Anticorpos/uso terapêutico , Complexo CD3/imunologia , Diabetes Mellitus Tipo 1/imunologia , Células Secretoras de Insulina/fisiologia , Adulto , Fatores Etários , Bélgica , Diabetes Mellitus Tipo 1/tratamento farmacológico , Feminino , Seguimentos , Hemoglobinas Glicadas/metabolismo , Humanos , Subpopulações de Linfócitos/imunologia , Masculino , Placebos , Sistema de Registros , Fatores de Tempo , Adulto Jovem
18.
Clin Microbiol Infect ; 26(4): 470-474, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31539635

RESUMO

OBJECTIVES: Blood culture contamination carries risks for patients, such as unnecessary antimicrobial therapy and other additional hazards and costs. One method shown to be effective in reducing contamination is initial blood specimen diversion during collection. We hypothesized that initial blood specimen diversion without a designated device or procedure would suffice for reduction in blood culture contamination rate. METHODS: From 1 September 2017 through to 6 September 2018, we conducted a randomized controlled trial to assess the effect of an initial-specimen diversion technique (ISDT) on the rate of blood-culture contamination by changing the order of sampling using regular vacuum specimen tubes instead of commercially available sterile diversion devices. We included adults from whom the treating physician planned to take blood cultures and additional blood chemistry tests. Additionally, we evaluated the potential economic benefits of an ISDT. This was a researcher-initiated trial, Clinicaltrials.gov NCT03088865. RESULTS: In all, 756 patients were enrolled. This method, compared with the standard procedure in use at our medical centre, reduced contamination by 66% (95% CI 17%-86%), from 20/400 (5%) with the standard method to 6/356 (1.6%) with the ISDT, without compromising detection of true bloodstream infection and at no additional cost. Hospital-wide implementation of ISDT was associated with a 1.1% saving in hospitalization days. CONCLUSIONS: We offer this novel approach as a simple, cost-effective measure to reduce risks to patient safety from contaminated blood cultures, without the need for using costly devices.


Assuntos
Hemocultura/economia , Hemocultura/métodos , Coleta de Amostras Sanguíneas/métodos , Custos e Análise de Custo , Manejo de Espécimes/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Coleta de Amostras Sanguíneas/economia , Coleta de Amostras Sanguíneas/instrumentação , Feminino , Hospitais , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Manejo de Espécimes/economia , Manejo de Espécimes/instrumentação , Adulto Jovem
19.
Rev Med Liege ; 64(10): 488-95, 2009 Oct.
Artigo em Francês | MEDLINE | ID: mdl-19911661

RESUMO

This is a retrospective analysis of medical records in 4 Belgian diabetes centres of 3 cohorts of patients with type 2 diabetes, with data available, respectively, after 3 months < or =163 patients exposed), 6 months (n=77) and 9 months (n=28) with exenatide therapy. This analysis mainly focuses on the 3 and 6 month cohorts. The mean HbA1 level at baseline averaged 9% and decreased by -1.3% and -1.4% at 3 and 6 months, respectively (-1.5% at 9 months). Neither the duration of diabetes nor initial body weight did influence the metabolic response. The decrease in HbA(1c) at 6 months was greater in patients with higher baseline HbA(1c):-0.5%, -1.4% and -2.4% for a baseline HbA(1c) level <8%, 8-10% and >10%, respectively. At 6 months, the composite criterion of a reduction of HbA(1c) by >1% or a final level <7% was reached by 69% of the cohort. Body weight decreased continuously over time, with a mean reduction of -2.1 kg at 3 months and -3.0 kg at 6 months (-4.9 kg at 9 months). The greater the baseline body weight, the greater the weight loss at final evaluation. Minor nausea and more rarely vomiting were observed, essentially during the first months of exenatide treatment. According to this observational study in routine practice, exenatide may be a valuable alternative to insulin for intensification of treatment of patients with type 2 diabetes after failure of oral drug combination, independently of baseline HbA(1c), body weight and duration of diabetes.


Assuntos
Glicemia/efeitos dos fármacos , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Peptídeos/uso terapêutico , Peçonhas/uso terapêutico , Redução de Peso/efeitos dos fármacos , Bélgica , Glicemia/análise , Exenatida , Feminino , Humanos , Hipoglicemiantes/farmacologia , Masculino , Pessoa de Meia-Idade , Peptídeos/farmacologia , Estudos Retrospectivos , Peçonhas/farmacologia
20.
J Vet Cardiol ; 24: 20-27, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31405551

RESUMO

A 9-month-old kitten with increased resting respiratory rate and exercise intolerance was diagnosed with a congenital partial atrioventricular septal defect causing pulmonary over circulation and presumed pulmonary hypertension based on echocardiogram. Invasive pressure measurements and contrast angiography confirmed this diagnosis. The cat underwent pulmonary artery banding under general anesthesia. Findings of echocardiogram 10 days postoperatively suggested reduced left-to-right shunt volume. Echocardiographic findings were static 4 months postoperatively.


Assuntos
Doenças do Gato/diagnóstico , Comunicação Interventricular/veterinária , Artéria Pulmonar/anormalidades , Animais , Doenças do Gato/diagnóstico por imagem , Doenças do Gato/cirurgia , Gatos , Diagnóstico Diferencial , Ecocardiografia/veterinária , Comunicação Interventricular/diagnóstico , Masculino , Artéria Pulmonar/cirurgia
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