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1.
Neth Heart J ; 30(2): 65-75, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34097240

RESUMO

In the Netherlands, approximately 250,000 people are living with heart failure. About one-third of them have comorbid diabetes mellitus type 2. Until recently, the effects of antidiabetic agents on heart failure were largely unknown. This changed after an observed increased risk of heart failure and ischaemic heart disease associated with thiazolidinediones that prompted the requirement for cardiovascular outcome trials for new glucose-lowering drugs. In the past decade, three new classes of antidiabetic agents have become available (i.e. dipeptidyl peptidase­4 inhibitors, glucagon-like peptide­1 receptor agonists and sodium-glucose cotransporter­2 (SGLT2) inhibitors). Although the first two classes demonstrated no beneficial effects on heart failure compared to placebo in patients with diabetes mellitus type 2, SGLT2 inhibitors significantly and consistently lowered the risk of incident and worsening heart failure. Two recent trials indicated that these favourable effects were also present in non-diabetic patients with heart failure with reduced ejection fraction, resulting in significantly lower risks of hospitalisation for heart failure and presumably also cardiovascular and all-cause mortality. SGLT2 inhibitors have been shown to be benefit on top of recommended heart failure therapy including sacubitril/valsartan and may also prove beneficial for heart failure with preserved ejection fraction. In this review, we discuss the effects of antidiabetic agents on heart failure.

2.
Tijdschr Psychiatr ; 64(2): 87-93, 2022.
Artigo em Holandês | MEDLINE | ID: mdl-35420151

RESUMO

BACKGROUND: In recent years a new concept of health, 'positive health', has been developed, which focusses on a person's resilience instead of merely the absence of disease. A previous survey among a variety of stakeholders in general health care showed that there are differences in how dimensions of positive health are valued. Patients valued the spiritual and societal participation dimension higher than physicians and policymakers. AIM: To investigate how the six dimensions of positive health are valued by patients, health care professionals and policymakers in mental health care in the Netherlands, and to test whether these values differ from such stakeholders in general healthcare. METHOD: In a cross-sectional survey patients (N= 458), healthcare professionals (N=250) and policy makers (N=47) of two mental health care institutions in the Netherlands filled in an online survey. The results were compared to the results of the study by Huber e.a. (2016) by ANCOVA, paired T-tests and cohens' d. RESULTS: Respondents valued all dimensions equally high. No significant differences between groups were found, except for a significant difference on daily functioning. Patients rated this dimension significantly higher than other stakeholders. The equal significance of the six dimensions is in contrast with the findings of a previous survey among stakeholders in general health care. CONCLUSION: In contrast to stakeholders in general health care, those in mental health care valued all dimensions of health of equal and high importance. Only daily functioning was rated lower by professionals and policymakers than by patients.


Assuntos
Pessoal de Saúde , Saúde Mental , Estudos Transversais , Atenção à Saúde , Humanos , Inquéritos e Questionários
3.
Appetite ; 165: 105316, 2021 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-34023447

RESUMO

Positive experiences with the introduction of solid food in infancy may lead to positive associations with feeding in both parent and infant. During this transitional period, parental feeding behavior and infant eating behavior might mutually reinforce each other. A feeding style that is found to be associated with positive child eating behavior, is sensitive feeding. In the present study we tested bidirectional prospective relations between mother and infant behavior in a cross-lagged model using observations of two feeds on two consecutive days on which the first bites of solid food were offered. The sample consisted of 246 first-time mothers and their infants, whose feeding interactions were videotaped during two home visits. Maternal sensitive feeding behavior (consisting of responsiveness to child feeding cues, general sensitivity and non-intrusiveness) and maternal positive and negative affect were coded. In addition, infant vegetable intake was weighed and vegetable liking was reported by mother. Results showed at least some stability of maternal feeding behavior and infant vegetable intake and liking from the first to the second feed. In addition, during the second feed maternal sensitive feeding and positive affect were associated with infant vegetable intake (r=.34 and r=.14) and liking (r=.33 and r=.39). These associations were mostly absent during the first feed. Finally, infant vegetable liking during the first feed positively predicted maternal sensitive feeding behavior during the second feed (ß=.25), suggesting that the infant's first response might influence maternal behavior. Taken together, mother and infant seem more attuned during the second feed than during the first feed. Future studies might include multiple observations over a longer time period, or micro-coding. Such insights can inform prevention programs focusing on optimizing feeding experiences during the weaning period.


Assuntos
Preferências Alimentares , Verduras , Aleitamento Materno , Criança , Comportamento Alimentar , Feminino , Humanos , Lactente , Comportamento do Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Comportamento Materno , Relações Mãe-Filho
4.
COPD ; 17(5): 485-491, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32752892

RESUMO

Survival in chronic obstructive pulmonary disease (COPD) is enhanced in obese patients, which is called the obesity paradox. Despite some theories, the precise mechanism remains unclear. Since COPD exacerbations play a major role in COPD survival, this study aimed to stratify patients into BMI classes and investigate exacerbation frequency, time to readmission and survival in patients hospitalized with a COPD exacerbation. Therefore, patients hospitalized with an exacerbation of COPD were categorized into BMI groups using cut-offs <18.5, 25, 30 and ≥35 kg/m2 for underweight, normal, overweight, moderately obese and severely obese groups and followed for five years. A total of 604 COPD patients was included. In comparison to normal weight patients, the 5-year exacerbation frequency was significantly decreased by 34-40% in obese patients depending on the BMI group (1.83 ± 1.60 per year in the normal weight group; overweight 1.60 ± 1.41; moderately obese 1.20 ± 1.18; severely obese 1.09 ± 1.13 per year; and 1.59 ± 1.30 in the underweight group). The time to readmission was up to 1.7 times longer for moderately obese patients compared to normal weight patients (954 ± 734 versus 564 ± 660 days). The data were supported by enhanced survival in obese patients and a regression analysis showing that both time to readmission and survival were associated with BMI independent of other possible confounders. In conclusion, this study shows a 'dose dependent' reduced exacerbation frequency and an increased time to readmission in obese patients admitted to the hospital with an exacerbation of COPD.


Assuntos
Obesidade/complicações , Doença Pulmonar Obstrutiva Crônica/complicações , Doença Pulmonar Obstrutiva Crônica/mortalidade , Magreza/complicações , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Progressão da Doença , Feminino , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Obesidade/mortalidade , Doença Pulmonar Obstrutiva Crônica/terapia , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida , Magreza/mortalidade
5.
BMC Pediatr ; 19(1): 266, 2019 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-31370830

RESUMO

BACKGROUND: The start of complementary feeding in infancy plays an essential role in promoting healthy eating habits. Evidence shows that it is important what infants are offered during this first introduction of solid foods: e.g. starting exclusively with vegetables is more successful for vegetable acceptance than starting with fruits. How infants are introduced to solid foods also matters: if parents are sensitive and responsive to infant cues during feeding, this may promote self-regulation of energy intake and a healthy weight. However, the effectiveness of the what and the how of complementary feeding has never been experimentally tested in the same study. In the current project the what and how (and their combination) are tested in one study to determine their relative importance for fostering vegetable acceptance and self-regulation of energy intake in infants. METHODS: A four-arm randomized controlled trial (Baby's First Bites (BFB)) was designed for 240 first-time Dutch mothers and their infants, 60 per arm. In this trial, we compare the effectiveness of (a) a vegetable-exposure intervention focusing on the what in complementary feeding; (b) a sensitive feeding intervention focusing on the how in complementary feeding, (c) a combined intervention focusing on the what and how in complementary feeding; (d) an attention-control group. All mothers participate in five sessions spread over the first year of eating solid foods (child age 4-16 months). Primary outcomes are vegetable consumption, vegetable liking and self-regulation of energy intake. Secondary outcomes are child eating behaviors, child anthropometrics and maternal feeding behavior. Outcomes are assessed before, during and directly after the interventions (child age 18 months), and when children are 24 and 36 months old. DISCUSSION: The outcomes are expected to assess the impact of the interventions and provide new insights into the mechanisms underlying the development of vegetable acceptance, self-regulation and healthy eating patterns in infants and toddlers, as well as the prevention of overweight. The results may be used to improve current dietary advice given to parents of their young children on complementary feeding. TRIAL REGISTRATION: The trial was retrospectively registered during inclusion of participants at the Netherlands National Trial Register (identifier NTR6572 ) and at ClinicalTrials.gov ( NCT03348176 ). Protocol issue date: 1 April 2018; version number 1.


Assuntos
Comportamento Alimentar , Preferências Alimentares , Fenômenos Fisiológicos da Nutrição do Lactente , Verduras , Aumento de Peso , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Método Simples-Cego
6.
Hum Reprod ; 32(5): 1009-1018, 2017 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-28333207

RESUMO

STUDY QUESTION: Is pre-ovulatory endometrial thickness (EMT) in women with unexplained subfertility undergoing IUI with ovarian stimulation (OS) associated with pregnancy chances? SUMMARY ANSWER: We found no evidence for an association between EMT and pregnancy chances. WHAT IS KNOWN ALREADY: It has been suggested that OS with clomiphene citrate (CC) results in a lower EMT than with gonadotrophins or aromatase inhibitors, but the clinical consequences in terms of pregnancy are unclear. STUDY DESIGN, SIZE, DURATION: We performed a systematic review and meta-analysis of studies comparing CC, gonadotrophins or aromatase inhibitors in an IUI program reporting on EMT and pregnancy rates in women with unexplained subfertility. PARTICIPANTS/MATERIALS, SETTING, METHODS: We searched MEDLINE, EMBASE and the non-MEDLINE subset of PubMed from inception to 28th June 2016 and cross-checked references of relevant articles. Outcome measures were clinical pregnancy rate and mean pre-ovulatory EMT. We calculated mean differences (MD) with 95% CIs with a fixed effect model, and in case of heterogeneity with an I2 > 50% a random effect model. We performed a meta-regression analysis to determine if stimulating drugs interacted with the estimated effect of EMT. MAIN RESULTS AND THE ROLE OF CHANCE: Our search retrieved 1563 articles of which 23 were included, totaling 3846 women. There were 17 RCTs and 6 cohort studies. The average study quality was low and there was considerable to substantial statistical heterogeneity. Seven studies provided data on EMT in relation to pregnancy. There was no evidence of a difference in EMT between women who conceived and women that did not conceive (1525 women, MDrandom: 0.51 mm, 95% CI: -0.05 to 1.07). Women treated with CC had a significantly thinner EMT than women treated with gonadotrophins (two studies, MD: -0.33, 95% CI: -0.64 to -0.01). There was no evidence of a difference in EMT when comparing CC with letrozole (five studies, MDrandom: -0.84, 95% CI: -1.97 to 0.28). The combination of CC plus gonadotrophins resulted in a slightly thinner endometrium than letrozole (nine studies, MDrandom: -0.79, 95% CI: -1.37 to -0.20). Letrozole resulted in a thinner EMT than gonadotrophins (two studies, MDrandom: -1.31, 95% CI: -2.08 to -0.53). LIMITATIONS, REASONS FOR CAUTION: The overall quality of the included studies was low to moderate. We found considerable to substantial heterogeneity in the comparisons, hampering firm conclusions. WIDER IMPLICATIONS OF THE FINDINGS: We found no evidence for an association between EMT and pregnancy rates during IUI -OS. As a consequence, canceling IUI cycles because of a thin endometrial lining may negatively affect clinical care. Although we found some evidence for very small differences in EMT when comparing various drugs, we cannot make inferences on their effect on pregnancy chances since these differences may be coincidental. STUDY FUNDING/COMPETING INTEREST(S): None. REGISTRATION NUMBER: N/A.


Assuntos
Endométrio/diagnóstico por imagem , Inseminação Artificial/métodos , Indução da Ovulação/métodos , Feminino , Humanos , Nascido Vivo , Tamanho do Órgão , Gravidez , Resultado da Gravidez , Taxa de Gravidez
7.
Placenta ; 150: 1-7, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38537411

RESUMO

INTRODUCTION: Despite a noticeable trend of delayed fatherhood, less is known about the impact of paternal age on the paternally programmed placenta. We hypothesize that paternal aging affects seminal quality and as such induces ageing-related epigenetic alterations that influence placental growth. Our main aim is to investigate associations between paternal age and first trimester (vascular) placental growth trajectories. METHODS: Pregnant women were enrolled before 10 weeks of gestation in the Rotterdam Periconceptional Cohort (Predict study). Placental volumes (PV) and utero-placental vascular volumes (uPVV) were measured at 7, 9, and 11 weeks gestation. Associations between paternal age and PV and uPVV were investigated using linear mixed models and the maximum likelihood ratio test to test non-linear relationships. We adjusted for gestational age, fetal sex, parental smoking and maternal age, BMI, education and parity, and stratified for conception mode. RESULTS: From 808 pregnancies we obtained 1313 PV and from 183 pregnancies 345 uPVV measurements. We show no associations between paternal age and PV (p = 0.934) and uPVV (p = 0.489) in our total population or in pregnancies conceived naturally (PV p = 0.166; uPVV p = 0.446) and after IVF/ICSI (PV p = 0.909; uPVV p = 0.749). For example, PV was 0.9% smaller (95% CI -5.7%-7.1%) in fathers aged 40 compared to 30 years old at 9 weeks gestation in the total study population. DISCUSSION: We are not demonstrating a significant impact of paternal age on first trimester placental growth in a tertiary care population. Given the trend of increasing paternal age, our study should be repeated in the general population.


Assuntos
Idade Paterna , Placenta , Placentação , Primeiro Trimestre da Gravidez , Humanos , Gravidez , Feminino , Adulto , Placenta/anatomia & histologia , Masculino , Estudos de Coortes , Pessoa de Meia-Idade , Países Baixos , Tamanho do Órgão
8.
Nat Genet ; 10(2): 208-12, 1995 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-7663517

RESUMO

More than 75% of the reported mutations in the hereditary breast and ovarian cancer gene, BRCA1, result in truncated proteins. We have used the protein truncation test (PTT) to screen for mutations in exon 11, which encodes 61% of BRCA1. In 45 patients from breast and/or ovarian cancer families we found six novel mutations: two single nucleotide insertions, three small deletions (1-5 bp) and a nonsense mutation identified two unrelated families. Furthermore, we were able to amplify the remaining coding region by RT-PCR using lymphocyte RNA. Combined with PTT, we detected aberrantly spliced products affecting exons 5 and 6 in one of two BRCA1-linked families examined. The protein truncation test promises to become a valuable technique in detecting BRCA1 mutations.


Assuntos
Neoplasias da Mama/genética , Mutação , Proteínas de Neoplasias/genética , Neoplasias Ovarianas/genética , Fatores de Transcrição/genética , Proteína BRCA1 , DNA/análise , Análise Mutacional de DNA , Éxons , Feminino , Ligação Genética , Haplótipos , Humanos , Pessoa de Meia-Idade , Conformação Proteica , Splicing de RNA
9.
Nat Genet ; 17(3): 341-5, 1997 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-9354803

RESUMO

To date, more than 300 distinct small deletions, insertions and point mutations, mostly leading to premature termination of translation, have been reported in the breast/ovarian-cancer susceptibility gene BRCA1. The elevated frequencies of some mutations in certain ethnic subpopulations are caused by founder effects, rather than by mutation hotspots. Here we report that the currently available mutation spectrum of BRCA1 has been biased by PCR-based mutation-screening methods, such as SSCP, the protein truncation test (PTT) and direct sequencing, using genomic DNA as template. Three large genomic deletions that are not detected by these approaches comprise 36% of all BRCA1 mutations found in Dutch breast-cancer families to date. A 510-bp Alu-mediated deletion comprising exon 22 was found in 8 of 170 breast-cancer families recruited for research purposes and in 6 of 49 probands referred to the Amsterdam Family Cancer Clinic for genetic counselling. In addition, a 3,835-bp Alu-mediated deletion encompassing exon 13 was detected in 4 of 170 research families, while an deletion of approximately 14 kb was detected in a single family [corrected]. Haplotype analyses indicated that each recurrent deletion had a single common ancestor.


Assuntos
Proteína BRCA1/genética , Neoplasias da Mama/genética , Efeito Fundador , Mutação , Sequência de Bases , Southern Blotting , Neoplasias da Mama/epidemiologia , Desoxirribonuclease HindIII/genética , Desoxirribonuclease HindIII/metabolismo , Feminino , Haplótipos , Humanos , Pessoa de Meia-Idade , Dados de Sequência Molecular , Países Baixos , Neoplasias Ovarianas/genética , Reação em Cadeia da Polimerase , Sequências Repetitivas de Ácido Nucleico , Deleção de Sequência
10.
Eur J Cancer Care (Engl) ; 20(5): 679-85, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21771130

RESUMO

With fever being the most common manifestation of early sepsis, clinical practice guidelines emphasise the prompt institution of broad-spectrum antibacterial therapy at its onset. An audit was performed on the haematology ward to determine whether there was any delay in starting antibiotic treatment during neutropenia in clinical patients and to define the main reasons for this. Strategies were developed, implemented and evaluated on short- and long-term implications on the delay in the start of antibacterial therapy. The procedures specified in the protocol for starting empirical antibacterial therapy were audited to assess whether the target for starting therapy within 30 min of fever was achieved. Initial results indicated that two major changes to the protocol were necessary to achieve a reduction in the delay between detection of fever and starting antibacterial therapy. This modified protocol was evaluated 4 months after implementation by means of a consecutive audit. After 3 years, a third audit was performed to determine the long-term implications of the improved protocol. In the initial audit, the mean time interval between the onset of fever and the administration of antibacterial therapy was 75 min. With the modified protocol, the mean time to starting therapy was shortened to 32 min (P < 0.05). Changing the protocol for starting antibacterial therapy allowed nurses to administer the first dose of antibiotic significantly earlier.


Assuntos
Antibacterianos/uso terapêutico , Protocolos Clínicos/normas , Febre/tratamento farmacológico , Neutropenia/tratamento farmacológico , Adulto , Idoso , Auditoria Clínica , Atenção à Saúde/normas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Fatores de Tempo , Adulto Jovem
11.
Environ Pollut ; 269: 115945, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-33261962

RESUMO

In Europe, emerging organic compounds (EOCs) in groundwater is a growing research area. Prioritisation for monitoring EOCs in Europe was formalised in 2019 through the development of the first voluntary groundwater watch list (GWWL). Despite this, groundwater occurrence data in the peer reviewed literature for Europe has not been reviewed to date. Questions surrounding the effect, toxicity, movement in the subsurface and unsaturated zone make the process of regulating EOC use difficult. The aim in Europe is to develop a unified strategy for the classification, and prioritisation of EOCs to be monitored in groundwater. This paper compiles evidence from the recent published studies from across Europe, since 2012, when the last major literature global review of EOCs in groundwater took place. A total of 39 studies were identified for review based on specific selection criteria (geography, publication date, sample size>10, inclusion of EOCs data). Data on specific compounds, and associated meta-data, are compiled and reviewed. The two most frequently detected EOCs, carbamazepine and caffeine, occurred in groundwater at concentrations of up to 2.3 and 14.8 µg/L, respectively. The most frequently reported category of compounds were 'Pharmaceuticals'; a highly studied group with 135 compounds identified within 31 of the 39 studies. In Europe, the majority of reviewed studies (23) were at a regional scale, looking specifically at EOCs in a specific city or aquifer. The use of analytical methods is not uniform across Europe, and this inevitably influences the current assessment of EOCs in groundwater. A correlation between the number of compounds analysed for, and the number detected in groundwater highlights the need for further studies, especially larger-scale studies throughout Europe. For the development of EU and national regulation, further work is required to understand the occurrence and impacts of EOCs in groundwater throughout Europe and elsewhere.


Assuntos
Água Subterrânea , Poluentes Químicos da Água , Cidades , Monitoramento Ambiental , Europa (Continente) , Poluentes Químicos da Água/análise
12.
Pharmacogenomics J ; 10(3): 219-25, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19884907

RESUMO

CYP2C19 converts the tricyclic antidepressant imipramine to its active metabolite desipramine, which is subsequently inactivated by CYP2D6. The novel CYP2C19*17 allele causes ultrarapid metabolism of CYP2C19 substrates. We genotyped 178 depressed patients on imipramine for CYP2C19*17, and measured steady-state imipramine and desipramine plasma concentrations. Mean dose-corrected imipramine plasma concentration was significantly dependent on CYP2C19 genotype (Kruskal-Wallis test, P=0.01), with circa 30% lower levels in CYP2C19*17/*17 individuals compared with CYP2C19*1/*1 (wild-type) patients. The mean dose-corrected imipramine+desipramine plasma concentrations and imipramine/desipramine ratios were not significantly different between genotype subgroups (Kruskal-Wallis tests, P>or=0.12). In a multivariate analysis, we found a significant, but limited effect (P=0.035, eta(2)=0.031) of the CYP2C19*17 genotype on imipramine+desipramine concentrations. Although the CYP2C19*17 allele is associated with a significantly increased metabolism of imipramine, CYP2C19*17 genotyping will, in our view, not importantly contribute to dose management of patients on imipramine therapy guided by imipramine+desipramine plasma concentrations.


Assuntos
Antidepressivos Tricíclicos/sangue , Hidrocarboneto de Aril Hidroxilases/genética , Depressão/tratamento farmacológico , Imipramina/sangue , Adulto , Antidepressivos Tricíclicos/uso terapêutico , Citocromo P-450 CYP2C19 , Depressão/genética , Desipramina/sangue , Genótipo , Humanos , Imipramina/uso terapêutico , Pessoa de Meia-Idade , Análise Multivariada
13.
Nat Biotechnol ; 38(3): 343-354, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31873213

RESUMO

Structural variation (SV), involving deletions, duplications, inversions and translocations of DNA segments, is a major source of genetic variability in somatic cells and can dysregulate cancer-related pathways. However, discovering somatic SVs in single cells has been challenging, with copy-number-neutral and complex variants typically escaping detection. Here we describe single-cell tri-channel processing (scTRIP), a computational framework that integrates read depth, template strand and haplotype phase to comprehensively discover SVs in individual cells. We surveyed SV landscapes of 565 single cells, including transformed epithelial cells and patient-derived leukemic samples, to discover abundant SV classes, including inversions, translocations and complex DNA rearrangements. Analysis of the leukemic samples revealed four times more somatic SVs than cytogenetic karyotyping, submicroscopic copy-number alterations, oncogenic copy-neutral rearrangements and a subclonal chromothripsis event. Advancing current methods, single-cell tri-channel processing can directly measure SV mutational processes in individual cells, such as breakage-fusion-bridge cycles, facilitating studies of clonal evolution, genetic mosaicism and SV formation mechanisms, which could improve disease classification for precision medicine.


Assuntos
Biologia Computacional/métodos , Variação Estrutural do Genoma , Leucemia/genética , Análise de Célula Única/métodos , Linhagem Celular , Cromotripsia , Evolução Clonal , Rearranjo Gênico , Humanos , Mutação INDEL , Inversão de Sequência , Translocação Genética
14.
J Clin Microbiol ; 47(7): 2181-6, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19458177

RESUMO

Viridans group streptococci (VGS) are a well-known cause of infections in immunocompromised patients, accounting for severe morbidity and mortality. Streptococcus mitis group species (Streptococcus mitis, Streptococcus pneumoniae, Streptococcus oralis) are among the VGS most often encountered in clinical practice. Identifying the portal of entry for S. mitis group strains is crucial for interventions preventing bacterial translocation. Unfortunately, tracking the source of S. mitis group strains is dependent on a combination of extremely laborious and time-consuming cultivation and molecular techniques (enterobacterial repetitive intergenic consensus-PCR [ERIC-PCR]). To simplify this procedure, a PCR analysis with newly designed primers targeting the household gene glucose kinase (gki) was used in combination with denaturing gradient gel electrophoresis (DGGE). This gki-PCR-DGGE technique proved to be specific for S. mitis group strains. Moreover, these strains could be detected in samples comprised of highly diverse microbiota, without prior cultivation. To study the feasibility of this new approach, a pilot study was performed. This confirmed that the source of S. mitis group bacteremia in pediatric patients with acute myeloid leukemia could be tracked back to the throat in five out of six episodes of bacteremia, despite the fact that throat samples are polymicrobial samples containing multiple S. mitis group strains. In contrast, using the classical combination of cultivation techniques and ERIC-PCR, we could detect these strains in only two out of six cases, showing the superiority of the newly developed technique. The new gki-PCR-DGGE technique can track the source of S. mitis group strains in polymicrobial samples without prior cultivation. Therefore, it is a valuable tool in future epidemiological studies.


Assuntos
DNA Bacteriano/genética , Eletroforese/métodos , Desnaturação de Ácido Nucleico , Reação em Cadeia da Polimerase/métodos , Infecções Estreptocócicas/microbiologia , Streptococcus mitis/classificação , Streptococcus mitis/isolamento & purificação , Impressões Digitais de DNA/métodos , Primers do DNA/genética , Humanos , Epidemiologia Molecular/métodos , Sensibilidade e Especificidade
15.
Mol Psychiatry ; 13(6): 597-605, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17667959

RESUMO

The inactivation and clearance of the tricyclic antidepressant imipramine is dependent on CYP2D6 activity. First, CYP2C19 converts imipramine into the active metabolite desipramine, which is then inactivated by CYP2D6. This retrospective single center study aimed to prove whether CYP2C19 and ample CYP2D6 genotyping (taking into consideration four null alleles and three decreased-activity alleles) could be used to predict imipramine and desipramine plasma concentrations in depressed patients, and whether genotype-based drug dose recommendations might assist in the early management of imipramine pharmacotherapy. In 181 subjects with major depressive disorder, drug doses were recorded, imipramine and desipramine plasma concentrations were monitored and CYP2C19 (*2) and CYP2D6 genotype (*3, *4, *5, *6, *9, *10, *41 and gene duplication) were obtained, yielding graded allele-specific CYP2D6 patient groups. Desipramine and imipramine+desipramine plasma concentration per drug dose unit, imipramine dose at steady state, and imipramine dose requirement significantly depended on CYP2D6 genotype (Kruskal-Wallis test, P<0.0001). Mean (+/-s.d.) drug dose requirements were 131 (+/-109), 155 (+/-70), 217 (+/-95), 245 (+/-125), 326 (+/-213), and 509 (+/-292) mg imipramine/day in carriers of 0, 0.5, 1, 1.5, 2, and >2 active CYP2D6 genes, respectively. Our protocol for CYP2D6 genotyping will thus importantly aid in the prediction of imipramine metabolism, allowing for the use of an adjusted starting dose and faster achievement of predefined imipramine+desipramine plasma levels in all genetic patient subgroups. Therefore, therapeutic efficacy and efficiency may be improved, the number of adverse drug reactions decreased, and hospital stay reduced.


Assuntos
Citocromo P-450 CYP2D6/sangue , Citocromo P-450 CYP2D6/genética , Transtorno Depressivo/tratamento farmacológico , Transtorno Depressivo/genética , Imipramina/uso terapêutico , Polimorfismo de Nucleotídeo Único , Antidepressivos Tricíclicos/metabolismo , Antidepressivos Tricíclicos/uso terapêutico , Hidrocarboneto de Aril Hidroxilases/genética , Hidrocarboneto de Aril Hidroxilases/metabolismo , Citocromo P-450 CYP2C19 , Citocromo P-450 CYP2D6/efeitos dos fármacos , Transtorno Depressivo/enzimologia , Desipramina/sangue , Desipramina/uso terapêutico , Relação Dose-Resposta a Droga , Quimioterapia Combinada , Genótipo , Humanos , Imipramina/sangue , Imipramina/metabolismo , Valor Preditivo dos Testes , Estudos Retrospectivos
16.
Eur Radiol ; 19(6): 1499-511, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19266204

RESUMO

Soft tissue sarcomas comprise approximately 1% of malignant tumors. There are more than 50 subtypes, but pleomorphic sarcoma, liposarcoma, leiomyosarcoma, synovial sarcoma, and malignant peripheral nerve sheath tumor account for 75%. Differentiation between these subtypes is difficult because they often present with a painless enlarging mass, and share many histological and MR imaging features. Nonetheless, subdifferentiation is important because the different subtypes have different prognoses and therapeutic strategies. In this manuscript we discuss the clinical, histological, and MR imaging features of soft tissue sarcomas according to the WHO classification. An overview is provided and differentiating features are discussed that can help to narrow down the differential diagnosis.


Assuntos
Extremidades/patologia , Imageamento por Ressonância Magnética/métodos , Sarcoma/diagnóstico , Neoplasias de Tecidos Moles/diagnóstico , Humanos
17.
Clin Nephrol ; 72(3): 177-80, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19761721

RESUMO

Although immediate pain sensation at the injection site is reported by patients, only limited data on comparison of pain at the injection site between erythropoiesis stimulating agents are available. Therefore, we compared the effect of subcutaneous epoietin-beta on immediate pain sensation to that of subcutaneous darbepoietin-alpha in a double blind, randomized controlled study. Adult patients, aged 18 - 75 years, treated with peritoneal dialysis or with stage 4 chronic kidney disease who in our unit are treated with subcutaneous darbepoietin-alpha for renal anemia for at least 3 months, were eligible for the study. After informed consent, patients received on one day four subcutaneous injections, two in each upper leg, in a fixed sequence, blinded to the patient and blinded to the investigator. Injections contained in a random order single dose epoietin-beta (0,3 ml = 4000 IU), darbepoietin-alpha (0,5 ml = 20 microg) and volume matched saline 0.9% placebo injections. Immediately after the four injections, whilst remaining sitting, the subject was requested to fill out one pain scale (Visual Analogue Scale (VAS)) and to verbally evaluate the pain experience (Verbal Pain Score (VPS)). Finally, the subject was requested to rank the four injections from least to most painful (Treatment Ranking). A total of 42 patients (22 male) participated in the study with a mean age of 56.8 +/- 1.9 years. The average VAS was lower for epoietin-beta (26.8 +/- 4.5 mm) compared to darbepoietin-alpha (58.1 +/- 4.6 mm; p < 0.01). Mean VAS for epoietin-beta did not differ from that of the two placebo saline solutions (0,3 ml 26.3 +/- 4.4 mm; 0,5 ml 18.4 +/- 3.2 mm). Mean VAS for darbepoietin-alpha was significantly higher than placebo (both p < 0.01). Similar observations were obtained for VPS (mean for epoietin-beta 1,3 +/- 0.2 and for darbepoietin-alpha 2.9 +/- 0.2; p < 0.01) and Treatment Ranking (mean for epoietin-beta 2.0 +/- 0.2 and for darbepoietin-alpha 3.2 +/- 0.2; p < 0.01). From the results it can be concluded that subcutaneous epoietin-beta caused statistically significant less pain sensation immediately after injection compared to subcutaneous darbepoietin-alpha . The pain caused by subcutaneous epoietin-beta injection was similar to that caused by placebo control injections whereas subcutaneous darbepoietin-alpha injection was significantly more painful than subcutaneous placebo injections.


Assuntos
Eritropoetina/análogos & derivados , Eritropoetina/administração & dosagem , Eritropoetina/efeitos adversos , Hematínicos/administração & dosagem , Hematínicos/efeitos adversos , Dor/induzido quimicamente , Darbepoetina alfa , Método Duplo-Cego , Feminino , Humanos , Injeções Subcutâneas , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes , Fatores de Tempo
18.
Bone Marrow Transplant ; 54(3): 418-424, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30082850

RESUMO

Historically, the mortality of patients admitted to the ICU after allogeneic stem cell transplantation (alloSCT) is high. Advancements in transplantation procedures, infectious monitoring and supportive care may have improved the outcome. This study aimed to determine short-term and long-term mortality after ICU admission of patients after alloSCT and to identify prognostic clinical and transplantation-related determinants present at ICU admission for long-term outcome. A multicenter cohort study was performed to determine 30-day and 1-year mortality within 2 years following alloSCT. A total of 251 patients were included. The 30-day and 1-year mortality was 55% and 80%, respectively. Platelet count <25 × 109/L (OR: 2.26, CI: 1.02-5.01) and serum bilirubin >19 µmol/L (OR: 2.47 CI: 1.08-5.65) at admission, other donor than a HLA-matched-related or HLA-matched-unrelated donor (OR: 4.59, CI: 1.49-14.1) and vasoactive medication within 24 h (OR: 2.35, CI: 1.28-4.31) were associated with increased 30-day mortality. Other donor than a HLA-matched-related or HLA-matched-unrelated donor (OR: 1.9, CI: 1.13-3.19), serum bilirubin >77 (OR: 2.05, CI: 1.28-3.30) and vasoactive medication within 24 h (OR: 1.65, CI: 1.12-2.43) were associated with increased 1-year mortality. Neutropenia was associated with decreased 30-day and 1-year mortality (OR: 0.29, CI: 0.14-0.59 and OR: 0.70, CI: 0.48-0.98). Myeloablative conditioning and T cell-depleted transplantation were not associated with increased mortality.


Assuntos
Estado Terminal/mortalidade , Transplante de Células-Tronco Hematopoéticas/métodos , Unidades de Terapia Intensiva/normas , Condicionamento Pré-Transplante/métodos , Transplante Homólogo/métodos , Adulto , Humanos , Pessoa de Meia-Idade
19.
Fam Cancer ; 7(4): 347-59, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18338239

RESUMO

The aim of this study is to summarize published empirical data describing the predictors of adhering to screening practices and choosing to have prophylactic surgery in women at increased risk for breast and ovarian cancer. Pubmed, Psychinfo and Cinahl databases were searched to identify studies on the predictors of adherence to breast and ovarian cancer screening and predictors of having a prophylactic mastectomy or salpingo-oophorectomy. We found 37 empirical studies that met our inclusion criteria. The main predictors of the use of preventive measures are related to DNA test results, socio-demographic characteristics, and psychological outcome measures. It is concluded that there is no unequivocal relationship between age, education, risk perception, or anxiety and adherence to breast and ovarian cancer screening practices. Worrying about cancer is associated with a higher adherence to screening practices.


Assuntos
Neoplasias da Mama/genética , Neoplasias Ovarianas/genética , Neoplasias da Mama/psicologia , Neoplasias da Mama/cirurgia , Saúde da Família , Feminino , Previsões , Predisposição Genética para Doença , Testes Genéticos , Mutação em Linhagem Germinativa , Humanos , Neoplasias Ovarianas/psicologia , Neoplasias Ovarianas/cirurgia , Cooperação do Paciente , Fatores Socioeconômicos
20.
Bone Rep ; 8: 204-214, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29955639

RESUMO

The effects of obesity on bone metabolism are complex, and may be mediated by consumption of a high fat diet and/or by obesity-induced metabolic dysregulation. To test the hypothesis that both high fat (HF) diet and diet-induced metabolic disease independently decrease skeletal acquisition, we compared effects of HF diet on bone mass and microarchitecture in two mouse strains: diet-induced obesity (DIO)-susceptible C57BL/6J (B6) and DIO-resistant FVB/NJ (FVB). At 3 wks of age we weaned 120 female FVB and B6 mice onto normal (N, 10% Kcal/fat) or HF diet (45% Kcal/fat) and euthanized them at 6, 12 and 20 weeks of age (N = 10/grp). Outcomes included body mass; percent fat and whole-body bone mineral density (WBBMD, g/cm2) via DXA; cortical and trabecular bone architecture at the midshaft and distal femur via µCT; and marrow adiposity via histomorphometry. In FVB HF, body mass, percent body fat, WBBMD and marrow adiposity did not differ vs. N, but trabecular bone mass was lower at 6 wks of age only (p < 0.05), cortical bone geometric properties were lower at 12 wks only, and bone strength was lower at 20 wks of age only in HF vs. N (p < 0.05). In contrast, B6 HF had higher body mass, percent body fat, and leptin vs. N. B6 HF also had higher WBBMD (p < 0.05) at 9 and 12 wks of age but lower distal femur trabecular bone mass at 12 wks of age, and lower body mass-adjusted cortical bone properties at 20 wks of age compared to N (p < 0.05). Marrow adiposity was also markedly higher in B6 HF vs. N. Overall, HF diet negatively affected bone mass in both strains, but was more deleterious to trabecular bone microarchitecture and marrow adiposity in B6 than in FVB mice. These data suggest that in addition to fat consumption itself, the metabolic response to high fat diet independently alters skeletal acquisition in obesity.

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