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1.
Redox Biol ; 67: 102873, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37688976

RESUMO

Oxidative stress plays a vital role for the adaptive responses to physical training. However, excessive oxidative stress can precipitate cellular damage, necessitating protective mechanisms to mitigate this effect. Glucosinolates, found predominantly in cruciferous vegetables, can be converted into isothiocyanates, known for their antioxidative properties. These compounds activate crucial antioxidant defence pathways and support mitochondrial function and protein integrity under oxidative stress, in both Nrf2-dependent and independent manners. We here administered glucosinolate-rich broccoli sprouts (GRS), in a randomized double-blinded cross-over fashion to 9 healthy subjects in combination with daily intense exercise training for 7 days. We found that exercise in combination with GRS significantly decreased the levels of carbonylated proteins in skeletal muscle and the release of myeloperoxidase into blood. Moreover, it lowered lactate accumulation during submaximal exercise, and attenuated the severe nocturnal hypoglycaemic episodes seen during the placebo condition. Furthermore, GRS in combination with exercise improved physical performance, which was unchanged in the placebo condition.


Assuntos
Brassica , Glucosinolatos , Humanos , Glucosinolatos/metabolismo , Brassica/metabolismo , Isotiocianatos , Estresse Oxidativo , Antioxidantes/metabolismo
2.
J Interprof Care ; 36(6): 828-838, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35129027

RESUMO

Interprofessional learning (IPL), which is learning arising from the interaction between representatives of two or more professions, has not been studied extensively in relation to peer support workers (PSWs) in mental health care teams. PSWs support others who face challenges with their own experience of similar challenges of mental health problems. The role of PSWs has been studied in mental health care interprofessional teams. However, researchers have not paid attention to IPL where the PSWs contribute their knowledge. This paper is a scoping review that aims to highlight existing knowledge of the PSW role and expertise in IPL in the context of mental health care. The findings show knowledge of (a) the key factors and challenges when interprofessional teams include the PSW role, (b) the legitimacy of the PSWs' role and expertise, and (c) the benefits of the PSW role. A knowledge gap was identified of teams' use of PSWs' expertise and its implications for IPL.


Assuntos
Serviços de Saúde Mental , Saúde Mental , Humanos , Grupo Associado , Pesquisa Qualitativa , Relações Interprofissionais
3.
Bone Marrow Transplant ; 57(4): 598-606, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35105966

RESUMO

The only potential cure for patients with myelodysplastic syndrome (MDS) is allogeneic hematopoietic stem cell transplantation (HCT). However, a proportion of patients who are HCT candidates do not finally get transplanted. This population-based study aimed to characterize HCT candidates were attempting to reach HCT fail and to identify causes and risk factors for failure. Data were collected from (1) the national Swedish registry, enrolling 291 transplant candidates between 2009-2018, and (2) Karolinska University Hospital, enrolling 131 transplantation candidates between 2000 and 2018. Twenty-five % (nation-wide) and 22% (Karolinska) failed to reach HCT. Reasons for failure to reach HCT were progressive and refractory disease (47%), no donor identified (22%), identification of comorbidity (18%), and infectious complications (14%). Factors associated with failure to reach HCT were IPSS-R cytogenetic risk-group very poor, mixed MDS/MPN disease, low blast count (0-4.9%), and low hemoglobin levels (≤7.9 g/dL). Transplanted patients had a longer overall survival (OS) compared to patients who failed to reach transplantation (83 months versus 14 months; p < 0.001). The survival advantage was seen for the IPSS-R risk groups intermediate, high, and very high. This study demonstrated that a high proportion of HCT-candidates fail to reach HCT and underlines the difficulties associated with bridging MDS patients to HCT.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Síndromes Mielodisplásicas , Humanos , Síndromes Mielodisplásicas/terapia , Doadores de Tecidos , Condicionamento Pré-Transplante , Transplante Homólogo
4.
Resuscitation ; 162: 11-19, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33549688

RESUMO

AIM: Drowning is a global health problem and deeper knowledge about the extent and causes is of utmost importance for implementing preventative actions. The aim of this study was to describe the incidence and characteristics of drowning in Sweden over time, including both non-fatal and fatal cases. METHODS: All cases identified as drowning (ICD-10 coding) at a national level in Sweden between 2003-2017 were collected. Three sources of data from the Swedish National Board of Health and Welfare were extracted via the Cause of Death Register and the National Patient Register. RESULTS: Over 15 years, a total of 6609 cases occurred, resulting in an annual incidence of 4.66 per 100 000. The median age was 49 years (IQR 23-67) and 67% were males. Non-fatal drownings represented 51% (n = 3363), with an overall non-fatal to fatal ratio of 1:1, this being 8:1 for children (0-17 years of age). Non-fatal cases were more often female (36% vs. 30%; p < 0.001), younger 30 (IQR 10-56) vs. 60 (IQR: 45-72) (p < 0.001) and of unintentional nature (81% vs. 55%; p < 0.001). The overall incidence decreased over time from 5.6 to 4.1 per 100 000 (p < 0.001). The highest rate of 30-day survival was found in females 0-17 years (94%, 95% CI 91.1-95.5) and the lowest in males >66 years (28.7%, 95% CI 26.2-31.2). Although the incidence in children 0-4 years increased from 7.4 to 8.1 per 100 000 (p < 0.001), they demonstrated the highest non-fatal to fatal ratio (13:1). CONCLUSION: Drowning is declining but remains a consistent and underestimated public-health problem. Non-fatal drowning cases represent about half of the burden and characteristics differ from fatal drowning cases, being younger, more often female and of unintentional nature.


Assuntos
Afogamento , Criança , Afogamento/epidemiologia , Feminino , Humanos , Incidência , Lactente , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Suécia/epidemiologia
5.
Sci Rep ; 10(1): 18723, 2020 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-33127947

RESUMO

Allergic diseases have become a major health problem, partly due to reduced microbial stimulation and a decreased dietary ω-3/ω-6 long-chain polyunsaturated fatty acid ratio. Prenatal exposures have been reported to influence allergy development, possibly induced via changes in maternal immune regulation. In a randomized double-blind placebo-controlled multicenter allergy prevention trial (PROOM-3), pregnant women were recruited at gestational week 20, and randomized to four study groups, one receiving both L. reuteri oil drops and ω-3 PUFA capsules (n = 22), the second receiving ω-3 PUFA supplementation and placebo regarding L. reuteri (n = 21), the third receiving L. reuteri and placebo regarding ω-3 PUFA (n = 22) and the fourth group receiving placebo capsules and placebo oil drops (n = 23). In this substudy, supplemental and pregnancy-related effects on maternal peripheral immune cell populations during pregnancy were assessed by flow cytometry immune phenotyping at gestational week 20, 32 and 4 days after delivery. The numbers of activated and regulatory T (Treg) cells (CD45RA- Foxp3++/CD45RA+Foxp3+) were reduced after delivery, with the lowest count in the L. reuteri supplemented group compared with the placebo group 4 days after delivery, while the ω-3 PUFA group did not differ from the placebo group. Several treatment-independent changes were observed during and after pregnancy in lymphocytes (CD4+/8+/19+/56+/45RA+/-), CD14+16+/- monocytes, and in subpopulations of T helper cells (Th) CD4+CD45RA-Tbet+ (Th1) and CD4+CD45RA-RORC+ (Th17) cells. In conclusion, probiotic supplementation to the mother during the second half of pregnancy resulted in immunomodulatory effects among activated and resting Treg cells. Furthermore, several systemic immune modifying effects of pregnancy were observed.


Assuntos
Ácidos Graxos Ômega-3/farmacologia , Hipersensibilidade/prevenção & controle , Gravidez/imunologia , Probióticos/farmacologia , Adulto , Suplementos Nutricionais , Método Duplo-Cego , Feminino , Óleos de Peixe/administração & dosagem , Citometria de Fluxo , Humanos , Hipersensibilidade/imunologia , Sistema Imunitário , Linfócitos/imunologia , Linfócitos T Reguladores/imunologia
7.
Ann Oncol ; 31(2): 266-273, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31959343

RESUMO

BACKGROUND: The mouse strains usually used to generate patient-derived xenografts (PDXs) are immunocompromised, rendering them unsuitable for immunotherapy studies. Here we assessed the value of immune-PDX mouse models for predicting responses to anti-PD-1 checkpoint inhibitor therapy in patients. PATIENTS AND METHODS: Melanoma biopsies contained in a retrospective biobank were transplanted into NOG mice or NOG mice expressing interleukin 2 (hIL2-NOG mice). Tumor growth was monitored, and comparisons were made with clinical data, sequencing data, and current in silico predictive tools. RESULTS: Biopsies grew readily in NOG mice but growth was heterogeneous in hIL2-NOG mice. IL2 appears to activate T-cell immunity in the biopsies to block tumor growth. Biopsy growth in hIL2-NOG mice was negatively associated with survival in patients previously treated with PD-1 checkpoint blockade. In two cases, the prospective clinical decisions of anti-PD-1 therapy or targeted BRAF/MEK inhibitors were supported by the observed responses in mice. CONCLUSIONS: Immune-PDX models represent a promising addition to future biomarker discovery studies and for clinical decision making in patients receiving immunotherapy.


Assuntos
Melanoma , Animais , Tomada de Decisão Clínica , Xenoenxertos , Humanos , Melanoma/tratamento farmacológico , Melanoma/genética , Camundongos , Camundongos Endogâmicos NOD , Camundongos Knockout , Camundongos SCID , Estudos Prospectivos , Estudos Retrospectivos , Ensaios Antitumorais Modelo de Xenoenxerto
8.
HLA ; 92(3): 144-153, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30014615

RESUMO

Clarifying the functional roles of HLA-G and the variation in the HLA-G gene that affects the expression are increasingly important in reproduction, cancer, organ transplantation, and autoimmune diseases. The homology between HLA genes and the genetic variability within each gene complicates the design of HLA gene-specific genotyping assays. We have designed a high-throughput, cost-efficient, robust, and specific assay for sequencing the full HLA-G gene including the 5'-upstream regulatory region, introns, and the 3'-untranslated region, using the next-generation sequencing (NGS) platform Ion Torrent PGM (Thermo Fisher Scientific, Waltham, Massachusetts). Conventional sequencing methods require the design of multiple primer pairs in order to cover the entire HLA-G gene. Designing multiple primer pairs specific for the HLA-G gene that also target all known alleles is difficult. Here, we present a setup that by the use of long-range polymerase chain reaction amplifies the whole HLA-G gene in a single reaction, which only requires a single HLA-G-specific primer pair. Enzymatic DNA shearing is used to break the long-range PCR product into shorter fragments ranging from 75 to 200 bp in length that are sequenced by NGS.


Assuntos
Sequenciamento de Nucleotídeos em Larga Escala/métodos , Antígenos HLA-G , Haplótipos/genética , Humanos , Reação em Cadeia da Polimerase , Análise de Sequência de DNA
9.
Br J Surg ; 105(4): 439-446, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29488646

RESUMO

BACKGROUND: Pancreatic mucinous cystic neoplasms (MCNs) are rare mucin-producing cystic tumours defined by the presence of ovarian-type stroma. MCNs have a malignant potential and thus surgery is frequently performed. The aim of this cohort study was to define better the criteria for surgical resection in patients with MCN. METHODS: This multicentre retrospective study included all resected MCNs between 2003 and 2015 in participating centres. Lesions without ovarian-type stroma were excluded. Patient characteristics, preoperative findings, histopathology findings and follow-up data were recorded. RESULTS: The study included 211 patients; their median age was 53 (range 18-82) years, and 202 (95·7 per cent) were women. Median preoperative tumour size was 55 (range 12-230) mm. Thirty-four of the 211 (16·1 per cent) were malignant, and high-grade dysplasia (HGD) was found in a further 13 (6·2 per cent). One-third of MCNs in men were associated with invasive cancer, compared with 15·3 per cent in women. Five cases of malignant transformation occurred in MCNs smaller than 4 cm. All cases of malignancy or HGD were associated with symptoms or features of concern on preoperative cross-sectional imaging. In multivariable analysis, raised carbohydrate antigen 19-9 (odds ratio (OR) 10·54, 95 per cent c.i. 2·85 to 218·23; P < 0·001), tumour size (OR 4·23, 3·02 to 11·03; P = 0·001), mural nodules (OR 3·55, 1·31 to 20·55; P = 0·002) and weight loss (OR 3·40, 2·34 to 12·34; P = 0·034) were independent factors predictive of malignant transformation. CONCLUSIONS: Small indeterminate MCNs with no symptoms or features of concern may safely be observed as they have a low risk of malignant transformation.


Assuntos
Cistadenocarcinoma Mucinoso/patologia , Cistadenocarcinoma Mucinoso/cirurgia , Pancreatectomia , Neoplasias Pancreáticas/patologia , Neoplasias Pancreáticas/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Risco , Adulto Jovem
10.
Zoonoses Public Health ; 65(3): 367-371, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29377579

RESUMO

This study investigated the prevalence of MRSA in samples taken in households, with and without backyard pigs in villages in a rural area of Shandong Province, China. Community-associated MRSA and livestock-associated MRSA, belonging to ST59 and ST9, respectively, were identified in both humans and pigs. The genotypic and phenotypic comparison of isolates indicates that bidirectional transmission of MRSA has occurred between humans and pigs in the villages.


Assuntos
Genótipo , Gado/microbiologia , Staphylococcus aureus Resistente à Meticilina/genética , Infecções Estafilocócicas/veterinária , Suínos/microbiologia , Animais , China/epidemiologia , Humanos , Staphylococcus aureus Resistente à Meticilina/classificação , Infecções Estafilocócicas/epidemiologia , Infecções Estafilocócicas/microbiologia
11.
J Intern Med ; 283(4): 334-345, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29226465

RESUMO

BACKGROUND: Oxygen therapy has been used routinely in normoxemic patients with suspected acute myocardial infarction (AMI) despite limited evidence supporting a beneficial effect. AMI is associated with a systemic inflammation. Here, we hypothesized that the inflammatory response to AMI is potentiated by oxygen therapy. METHODS: The DETermination of the role of Oxygen in suspected Acute Myocardial Infarction (DETO2X-AMI) multicentre trial randomized patients with suspected AMI to receive oxygen at 6 L min-1 for 6-12 h or ambient air. For this prespecified subgroup analysis, we recruited patients with confirmed AMI from two sites for evaluation of inflammatory biomarkers at randomization and 5-7 h later. Ninety-two inflammatory biomarkers were analysed using proximity extension assay technology, to evaluate the effect of oxygen on the systemic inflammatory response to AMI. RESULTS: Plasma from 144 AMI patients was analysed whereof 76 (53%) were randomized to oxygen and 68 (47%) to air. Eight biomarkers showed a significant increase, whereas 13 were decreased 5-7 h after randomization. The inflammatory response did not differ between the two treatment groups neither did plasma troponin T levels. After adjustment for increase in troponin T over time, age and sex, the release of inflammation-related biomarkers was still similar in the groups. CONCLUSIONS: In a randomized controlled setting of normoxemic patients with AMI, the use of supplemental oxygen did not have any significant impact on the early release of systemic inflammatory markers.


Assuntos
Infarto do Miocárdio sem Supradesnível do Segmento ST/terapia , Oxigenoterapia/efeitos adversos , Infarto do Miocárdio com Supradesnível do Segmento ST/terapia , Síndrome de Resposta Inflamatória Sistêmica/etiologia , Idoso , Biomarcadores/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Síndrome de Resposta Inflamatória Sistêmica/diagnóstico
12.
Ann Oncol ; 29(2): 472-483, 2018 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-29244072

RESUMO

Background: Smoking has been associated with colorectal cancer (CRC) incidence and mortality in previous studies and might also be associated with prognosis after CRC diagnosis. However, current evidence on smoking in association with CRC prognosis is limited. Patients and methods: For this individual patient data meta-analysis, sociodemographic and smoking behavior information of 12 414 incident CRC patients (median age at diagnosis: 64.3 years), recruited within 14 prospective cohort studies among previously cancer-free adults, was collected at baseline and harmonized across studies. Vital status and causes of death were collected for a mean follow-up time of 5.1 years following cancer diagnosis. Associations of smoking behavior with overall and CRC-specific survival were evaluated using Cox regression and standard meta-analysis methodology. Results: A total of 5229 participants died, 3194 from CRC. Cox regression revealed significant associations between former [hazard ratio (HR) = 1.12; 95 % confidence interval (CI) = 1.04-1.20] and current smoking (HR = 1.29; 95% CI = 1.04-1.60) and poorer overall survival compared with never smoking. Compared with current smoking, smoking cessation was associated with improved overall (HR<10 years = 0.78; 95% CI = 0.69-0.88; HR≥10 years = 0.78; 95% CI = 0.63-0.97) and CRC-specific survival (HR≥10 years = 0.76; 95% CI = 0.67-0.85). Conclusion: In this large meta-analysis including primary data of incident CRC patients from 14 prospective cohort studies on the association between smoking and CRC prognosis, former and current smoking were associated with poorer CRC prognosis compared with never smoking. Smoking cessation was associated with improved survival when compared with current smokers. Future studies should further quantify the benefits of nonsmoking, both for cancer prevention and for improving survival among CRC patients, in particular also in terms of treatment response.


Assuntos
Neoplasias Colorretais/mortalidade , Fumar/efeitos adversos , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Abandono do Hábito de Fumar
13.
Osteoporos Int ; 28(8): 2321-2333, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28429052

RESUMO

Effects of the chemotherapeutic agent etoposide on the skeleton were determined in mice. Numbers of bone marrow cells were reduced and myeloid cells were increased. Bone volume was significantly decreased with signs of inhibition of bone formation. Etoposide after pre-treatment with zoledronic acid still reduced bone but overall bone volume was higher than with etoposide alone. INTRODUCTION: Chemotherapeutics target rapidly dividing tumor cells yet also impact hematopoietic and immune cells in an off target manner. A wide array of therapies have negative side effects on the skeleton rendering patients osteopenic and prone to fracture. This study focused on the pro-apoptotic chemotherapeutic agent etoposide and its short- and long-term treatment effects in the bone marrow and skeleton. METHODS: Six- to 16-week-old mice were treated with etoposide (20-25 mg/kg) or vehicle control in short-term (daily for 5-9 days) or long-term (3×/week for 17 days or 6 weeks) regimens. Bone marrow cell populations and their phagocytic/efferocytic functions were analyzed by flow cytometry. Blood cell populations were assessed by CBC analysis. Bone volume and area compartments and osteoclast numbers were measured by microCT, histomorphometry, and TRAP staining. Biomarkers of bone formation (P1NP) and resorption (TRAcP5b) were assayed from serum. Gene expression in bone marrow was assessed using qPCR. RESULTS: Flow cytometric analysis of the bone marrow revealed short-term etoposide reduced overall cell numbers and B220+ cells, with increased marrow apoptotic (AnnexinV+PI-) cells, mesenchymal stem-like cells, and CD68+, CD45+, and CD11b+ monocyte/myeloid cells (as a percent of the total marrow). After 6 weeks, the CD68+, Gr1+, CD11b+, and CD45+ cell populations were still relatively increased in etoposide-treated bone marrow. Skeletal phenotyping revealed etoposide decreased bone volume, trabecular thickness, and cortical bone volume. Gene expression in the marrow for the leptin receptor and CXCL12 were reduced with short-term etoposide, and an increased ratio of RANKL/OPG mRNA was observed. In whole bone, Runx2 and osteocalcin gene expressions were reduced, and in serum, P1NP was significantly reduced with etoposide. Treatment with the antiresorptive agent zoledronic acid prior to etoposide increased bone volume and improved the etoposide-induced decrease in skeletal parameters. CONCLUSIONS: These data suggest that etoposide induces apoptosis in the bone marrow and significantly reduces parameters of bone formation with rapid reduction in bone volume. Pre-treatment with an antiresorptive agent results in a preservation of bone mass. Preventive approaches to preserving the skeleton should be considered in human clinical studies.


Assuntos
Antineoplásicos Fitogênicos/efeitos adversos , Etoposídeo/efeitos adversos , Osteoporose/induzido quimicamente , Animais , Antineoplásicos Fitogênicos/administração & dosagem , Antineoplásicos Fitogênicos/farmacologia , Apoptose/efeitos dos fármacos , Células Sanguíneas/efeitos dos fármacos , Conservadores da Densidade Óssea/uso terapêutico , Células da Medula Óssea/efeitos dos fármacos , Remodelação Óssea/efeitos dos fármacos , Difosfonatos/uso terapêutico , Esquema de Medicação , Etoposídeo/administração & dosagem , Etoposídeo/farmacologia , Feminino , Imidazóis/uso terapêutico , Camundongos Endogâmicos C57BL , Osteoporose/diagnóstico por imagem , Osteoporose/fisiopatologia , Osteoporose/prevenção & controle , Tíbia/diagnóstico por imagem , Tíbia/efeitos dos fármacos , Tíbia/fisiopatologia , Microtomografia por Raio-X/métodos , Ácido Zoledrônico
14.
Scand J Immunol ; 86(1): 31-39, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28426141

RESUMO

Melanocortin signalling in leucocyte subsets elicits anti-inflammatory and immune tolerance inducing effects in animal experimental inflammation. In man, however, the effects of melanocortin signalling in inflammatory conditions have scarcely been examined. We explored the differential reactions of melanocortin 1-5 receptors (MC1-5R) gene expressions in pathogenetic leucocyte subsets in rheumatoid arthritis (RA) to treatment with TNF-α inhibitor adalimumab. Seven patients with active RA donated blood at start and at 3-month treatment. CD4+ T helper (h) lymphocytes (ly), CD8+ T cytotoxic (c) ly, CD19+ B ly and CD14+ monocytes were isolated, using immunomagnetic beads, total RNA extracted and reverse transcription quantitative polymerase chain reaction (RT-qPCR) performed. Fold changes in MC1-5R, Th1-, inflammatory- and regulatory cytokine gene expressions were assessed for correlation. Six patients responded to adalimumab treatment, while one patient was non-responder. In all lymphocyte subtypes, MC1-5R gene expressions decreased in responders and increased in the non-responder. In responders, decrease in MC2R, MC3R and MC4R gene expressions in CD8+ Tc and CD19+ B ly was significant. Fold change in MC1-5R and IFNγ gene expressions correlated significantly in CD8+ Tc ly, while fold change in MC1R, MC3R and MC5R and IL-1ß gene expressions correlated significantly in CD4+ Th ly. Our results show regulation of MC2R, MC3R and MC4R gene expressions in CD8+ Tc ly and CD19+ B ly. The correlations between fold change in different MCRs and disease driving cytokine gene expressions in CD8+ Tc ly and CD4+ Th ly point at a central immune modulating function of the melanocortin system in RA.


Assuntos
Adalimumab/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Expressão Gênica/efeitos dos fármacos , Linfócitos/metabolismo , Receptores de Melanocortina/genética , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Adalimumab/administração & dosagem , Adulto , Antígenos CD19/metabolismo , Antirreumáticos/administração & dosagem , Antirreumáticos/uso terapêutico , Artrite Reumatoide/genética , Artrite Reumatoide/imunologia , Linfócitos B/metabolismo , Linfócitos T CD8-Positivos/metabolismo , Regulação para Baixo/efeitos dos fármacos , Feminino , Humanos , Injeções Subcutâneas , Interferon gama/genética , Masculino , Pessoa de Meia-Idade , Receptor Tipo 2 de Melanocortina/genética , Receptor Tipo 3 de Melanocortina/genética , Receptor Tipo 4 de Melanocortina/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Linfócitos T Citotóxicos/metabolismo , Resultado do Tratamento , Fator de Necrose Tumoral alfa/metabolismo
15.
Sci Rep ; 7: 45990, 2017 04 11.
Artigo em Inglês | MEDLINE | ID: mdl-28397851

RESUMO

The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multi-core particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions.

16.
Eur J Vasc Endovasc Surg ; 53(5): 672-678, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28372985

RESUMO

OBJECTIVES: To compare early (30 day mortality and major complications) and midterm (survival) outcomes in elective open surgical descending and thoraco-abdominal aortic repair using left heart bypass (LHB) versus hypothermic circulatory arrest (HCA) for organ protection, hypothesising non-inferiority of HCA management. METHOD: This was a retrospective clinical cohort study with cross sectional follow-up. All elective (n = 90) descending or thoraco-abdominal aortic repairs performed between 2004 and 2015 using either LHB (n = 57) or HCA (n = 33) were included. Pre- and intra-operative variables were evaluated by univariate statistical analysis. Thirty day and follow-up mortality were primary endpoints; major complications were secondary endpoints. Propensity score matching was employed to adjust for selection bias. Kaplan-Meier methods were used to estimate midterm survival. RESULTS: Overall 30 day mortality was 8/90 (8.9%): 6/57 (10.5%) using LHB vs. 2/33 (6.1%) using HCA, p = .47. Five patients (5.6%) suffered paraplegia: 3/57 (5.3%) using LHB vs. 2/33 (6.1%) using HCA, p = .87. Stroke occurred in 6/57 (11%) vs. 2/33 (6.1%), p = .76; renal failure in 27/57 (47%) vs. 19/33 (58%), p = .90; and respiratory failure in 17/57 (30%) vs. 11/33 (33%), p = .68. In 26 propensity score matched pairs, findings remained unaltered. Total follow-up was 443 patient years (median 4.9 years). Estimated survival was 78% at 1 year and 77% at 5 years in LHB vs. 72% and 67%, respectively, with HCA; there were no significant inter-group differences, before or after propensity score matching. CONCLUSIONS: In elective descending or thoraco-abdominal aortic repair, no statistically significant differences in 30 day mortality, major complications, or follow-up survival were found when LHB and HCA were compared. These findings remained after propensity score matching.


Assuntos
Aorta Abdominal/cirurgia , Aorta Torácica/cirurgia , Parada Cardíaca Induzida , Derivação Cardíaca Esquerda , Procedimentos Cirúrgicos Vasculares , Idoso , Aorta Abdominal/diagnóstico por imagem , Aorta Torácica/diagnóstico por imagem , Distribuição de Qui-Quadrado , Estudos Transversais , Procedimentos Cirúrgicos Eletivos , Feminino , Parada Cardíaca Induzida/efeitos adversos , Parada Cardíaca Induzida/mortalidade , Derivação Cardíaca Esquerda/efeitos adversos , Derivação Cardíaca Esquerda/mortalidade , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Complicações Pós-Operatórias/etiologia , Pontuação de Propensão , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares/efeitos adversos , Procedimentos Cirúrgicos Vasculares/mortalidade
17.
Nanoscale ; 9(12): 4227-4235, 2017 Mar 23.
Artigo em Inglês | MEDLINE | ID: mdl-28290585

RESUMO

The widespread use of magnetic nanoparticles in the biotechnical sector puts new demands on fast and quantitative characterization techniques for nanoparticle dispersions. In this work, we report the use of asymmetric flow field-flow fractionation (AF4) and ferromagnetic resonance (FMR) to study the properties of a commercial magnetic nanoparticle dispersion. We demonstrate the effectiveness of both techniques when subjected to a dispersion with a bimodal size/magnetic property distribution: i.e., a small superparamagnetic fraction, and a larger blocked fraction of strongly coupled colloidal nanoclusters. We show that the oriented attachment of primary nanocrystals into colloidal nanoclusters drastically alters their static, dynamic, and magnetic resonance properties. Finally, we show how the FMR spectra are influenced by dynamical effects; agglomeration of the superparamagnetic fraction leads to reversible line-broadening; rotational alignment of the suspended nanoclusters results in shape-dependent resonance shifts. The AF4 and FMR measurements described herein are fast and simple, and therefore suitable for quality control procedures in commercial production of magnetic nanoparticles.

18.
Hum Reprod ; 32(4): 811-819, 2017 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-28175316

RESUMO

Study question: Does the addition of anti-Müllerian hormone (AMH) to a conventional dosage regimen, including age, antral follicle count (AFC) and BMI, improve the rate of targeted ovarian response, defined as 5-12 oocytes after IVF? Summary answer: The addition of AMH did not alter the rate of targeted ovarian response, 5-12 oocytes, or decreased the rate of ovarian hyperstimulation syndrome (OHSS) or cancelled cycles due to poor ovarian response. What is known already: Controlled ovarian hyperstimulation (COH) in connection with IVF is sometimes associated with poor ovarian response resulting in low pregnancy and live birth rates or leading to cycle cancellations, but also associated with excessive ovarian response, causing an increased risk of OHSS. Even though it is well-established that both AMH and AFC are strong predictors of ovarian response in IVF, few randomized trials have investigated their impact on achieving an optimal number of oocytes. Study design, size and duration: Between January 2013 and May 2016, 308 patients starting their first IVF treatment were randomly assigned, using a computerized randomization program with concealed allocation of patients and in the proportions of 1:1, to one of two dosage algorithms for decisions on hormone starting dose, an algorithm, including AMH, AFC, age and BMI (intervention group), or an algorithm, including only AFC, age and BMI (control group). The study was blinded to patients and treating physicians. Participants/materials, setting, methods: Women aged >18 and <40 years, with a BMI above 18.0 and below 35.0 kg/m2 starting their first IVF cycle where standard IVF was planned, were eligible. All patients were treated with a GnRH agonist protocol and recombinant FSH was used for stimulation. The study was performed as a single-centre study at a large IVF unit at a university hospital. Main results and the role of chance: The rate of patients having the targeted number of oocytes retrieved was 81/152 (53.3%) in the intervention group versus 96/155 (61.9%) in the control group (P = 0.16, difference: -8.6, 95% CI: -20.3; 3.0). Cycles with poor response (<5 oocytes) were more frequent in the AMH group, 39/152 (25.7%) versus the non-AMH group, 17/155 (11.0%) (P < 0.01), while the number of cancelled cycles due to poor ovarian response did not differ 7/152 (4.6%) and 4/155 (2.6%) (P = 0.52). An excessive response (>12 oocytes) was seen in 32/152 (21.1%) and 42/155 (27.1%) patients, respectively (P = 0.27). Moderate or severe OHSS was observed among 5/152 (3.3%) and 6/155 (3.9%) patients, respectively (P = 1.0). Live birth rates were 48/152 (31.6%) and 42/155 (27.1%) per started cycle. Limitations, reasons for caution: The categorization of AMH values in predicted low, normal and high responders was originally established using the Diagnostic Systems Laboratories assay and was translated to more recently released assays, lacking international standards and well-established reference intervals. The interpretation of AMH values between different assays should therefore be made with some caution. Wider implications of the findings: An individualised dosage regimen including AMH compared with a non-AMH dosage regimen in an unselected patient population did not alter the number of women achieving the targeted number of oocytes, or the cancellation rate due to poor response or the occurrence of moderate/severe OHSS. However, this study cannot answer the question if using an algorithm for dose decision of FSH is superior to a standard dose and neither which ovarian reserve test is the most effective. Study funding/competing interest: Financial support was received through Sahlgrenska University Hospital (ALFGBG-70 940) and unrestricted grants from Ferring Pharmaceuticals and the Hjalmar Svensson Research Foundation. None of the authors declares any conflict of interest. Trial registration: The study was registered at www.clinicaltrials.gov NCT02013973. Trial registration date: 6 December 2013. DATE OF FIRST PATIENT RANDOMIZED: 14 January 2013.


Assuntos
Algoritmos , Hormônio Antimülleriano/sangue , Ovário/efeitos dos fármacos , Indução da Ovulação/métodos , Adulto , Feminino , Fertilização In Vitro , Hormônio Foliculoestimulante/administração & dosagem , Hormônio Foliculoestimulante/farmacologia , Hormônio Liberador de Gonadotropina/administração & dosagem , Hormônio Liberador de Gonadotropina/agonistas , Hormônio Liberador de Gonadotropina/farmacologia , Humanos , Medicina de Precisão , Gravidez , Resultado da Gravidez , Resultado do Tratamento
19.
Crit Rev Food Sci Nutr ; 57(2): 237-253, 2017 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-25921546

RESUMO

Polysaccharides derived from plant foods are major components of the human diet, with limited contributions of related components from fungal and algal sources. In particular, starch and other storage carbohydrates are the major sources of energy in all diets, while cell wall polysaccharides are the major components of dietary fiber. We review the role of these components in the human diet, including their structure and distribution, their modification during food processing and effects on functional properties, their behavior in the gastrointestinal tract, and their contribution to healthy diets.


Assuntos
Parede Celular/metabolismo , Carboidratos da Dieta/metabolismo , Fibras na Dieta/metabolismo , Digestão , Ingestão de Energia , Modelos Biológicos , Plantas Comestíveis/química , Carboidratos/biossíntese , Carboidratos/química , Doença Crônica/epidemiologia , Doença Crônica/prevenção & controle , Temperatura Baixa/efeitos adversos , Carboidratos da Dieta/efeitos adversos , Carboidratos da Dieta/uso terapêutico , Fibras na Dieta/efeitos adversos , Fibras na Dieta/análise , Fibras na Dieta/uso terapêutico , Manipulação de Alimentos , Índice Glicêmico , Temperatura Alta/efeitos adversos , Humanos , Desnutrição/epidemiologia , Desnutrição/metabolismo , Desnutrição/prevenção & controle , Estrutura Molecular , Plantas Comestíveis/efeitos adversos , Plantas Comestíveis/metabolismo , Fatores de Risco , Resposta de Saciedade , Amido/efeitos adversos , Amido/química , Amido/metabolismo , Amido/uso terapêutico
20.
Eur J Clin Nutr ; 71(3): 407-419, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-27966568

RESUMO

BACKGROUND/OBJECTIVES: To compare macronutrient intakes out of home-by location-to those at home and to investigate differences in total daily intakes between individuals consuming more than half of their daily energy out of home and those eating only at home. SUBJECTS/METHODS: Data collected through 24-h recalls or diaries among 23 766 European adults. Participants were grouped as 'non-substantial', 'intermediate' and 'very substantial out-of-home' eaters based on energy intake out of home. Mean macronutrient intakes were estimated at home and out of home (overall, at restaurants, at work). Study/cohort-specific mean differences in total intakes between the 'very substantial out-of-home' and the 'at-home' eaters were estimated through linear regression and pooled estimates were derived. RESULTS: At restaurants, men consumed 29% of their energy as fat, 15% as protein, 45% as carbohydrates and 11% as alcohol. Among women, fat contributed 33% of energy intake at restaurants, protein 16%, carbohydrates 45% and alcohol 6%. When eating at work, both sexes reported 30% of energy from fat and 55% from carbohydrates. Intakes at home were higher in fat and lower in carbohydrates and alcohol. Total daily intakes of the 'very substantial out-of-home' eaters were generally similar to those of individuals eating only at home, apart from lower carbohydrate and higher alcohol intakes among individuals eating at restaurants. CONCLUSIONS: In a large population of adults from 11 European countries, eating at work was generally similar to eating at home. Alcoholic drinks were the primary contributors of higher daily energy intakes among individuals eating substantially at restaurants.


Assuntos
Ingestão de Alimentos , Comportamento Alimentar , Restaurantes , Adulto , Consumo de Bebidas Alcoólicas , Dieta , Registros de Dieta , Inquéritos sobre Dietas , Carboidratos da Dieta/administração & dosagem , Carboidratos da Dieta/análise , Gorduras na Dieta/administração & dosagem , Gorduras na Dieta/análise , Proteínas na Dieta/administração & dosagem , Proteínas na Dieta/análise , Ingestão de Energia , Europa (Continente) , Feminino , Humanos , Modelos Lineares , Masculino , Rememoração Mental , Fatores Sexuais
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