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BACKGROUND: Pru p 3 and Pru p 7 have been implicated as risk factors for severe peach allergy. This study aimed to establish sensitization patterns to five peach components across Europe and in Japan, to explore their relation to pollen and foods and to predict symptom severity. METHODS: In twelve European (EuroPrevall project) and one Japanese outpatient clinic, a standardized clinical evaluation was conducted in 1231 patients who reported symptoms to peach and/or were sensitized to peach. Specific IgE against Pru p 1, 2, 3, 4 and 7 and against Cup s 7 was measured in 474 of them. Univariable and multivariable Lasso regression was applied to identify combinations of parameters predicting severity. RESULTS: Sensitization to Pru p 3 dominated in Southern Europe but was also quite common in Northern and Central Europe. Sensitization to Pru p 7 was low and variable in the European centers but very dominant in Japan. Severity could be predicted by a model combining age of onset of peach allergy, probable mugwort, Parietaria pollen and latex allergy, and sensitization to Japanese cedar pollen, Pru p 4 and Pru p 7 which resulted in an AUC of 0.73 (95% CI 0.73-0.74). Pru p 3 tended to be a risk factor in South Europe only. CONCLUSIONS: Pru p 7 was confirmed as a significant risk factor for severe peach allergy in Europe and Japan. Combining outcomes from clinical and demographic background with serology resulted in a model that could better predict severity than CRD alone.
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Hipersensibilidade Alimentar , Prunus persica , Humanos , Prunus persica/efeitos adversos , Hipersensibilidade Alimentar/diagnóstico , Alérgenos , Antígenos de Plantas , Imunoglobulina E , Proteínas de PlantasRESUMO
BACKGROUND: Public health emergencies often affect Poison Control Centre (PCC) operations. We examined possible effects of the coronavirus disease 2019 (COVID-19) pandemic on call volume, call characteristics, and workload in European PCCs. METHOD: All 65 individual European PCCs were requested to supply data on the number of calls and call characteristics (caller, age groups, reason and specific exposures) from March to June in 2018, 2019, and 2020 (Part 1). Number of calls with specific characteristics was normalised to all calls. Calls (N) and call characteristics (%) were compared between 2020 and 2018/2019 (average), within PCCs/countries and grouped. Correlation between call volume and COVID-19 cases per PCC/country was examined. All PCCs received a survey on workload (Part 2). Parts 1 and 2 were independent. RESULTS: For Part 1, 36 PCCs (21 countries) supplied 26 datasheets. PCCs in the UK and in France merged data and supplied one datasheet each with national data. Summed data showed an increase of 4.5% in call volume from 228.794 in 2018/2019 (average) to 239.170 in 2020 (p < 0.001). Within PCCs/countries, calls significantly increased for 54% of PCCs/countries (N = 14/26) and decreased for 19% (N = 5/26), three of which (N = 3/5) only serve medical professionals. Correlation between call volume and COVID-19 cases was (non-significant) positive (Rho >0.7) in 5/26 PCCs/countries (19%), and negative in 6/26 (23%). Call characteristics (median proportion of grouped data in 2018/2019 vs. 2020) changed: fewer medical professionals called (40 vs. 34%, p < 0.001), calls on intentional exposures decreased (20 vs. 17%, p < 0.012), as did calls on patients between 13 and 17 years (5 vs. 4%, p < 0.05). Calls on specific exposures increased; disinfectants from 1.9 to 5.2%, and cleaning products from 4.4 to 5.7% (p < 0.001). For Part 2, 38 PCCs (24 countries) filled the survey on workload (number/length of shifts and time on PCC duties), which increased in 23/38 PCCs (61%), while 10/38 (26%) worked with fewer employees. CONCLUSIONS: Obtaining aggregated European PCC data proved challenging but showed an increase in overall call volume and workload during the first COVID-19 wave. Call characteristics changed including fewer calls from professionals and more calls on specific exposures. Within single PCCs/countries a variety of effects was observed.
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COVID-19 , Desinfetantes , Humanos , Centros de Controle de Intoxicações , COVID-19/epidemiologia , Saúde Pública , Europa (Continente)/epidemiologiaRESUMO
PURPOSE: To identify modifiable biomechanical and neuromuscular anterior cruciate ligament (ACL) injury risk factors for first-time ACL injury in adolescent female elite football and team handball players. METHODS: Adolescent female elite football and handball players with no previous ACL injury participated in the present study. At baseline, players were tested during side-cutting manoeuvres performed in a 3-dimensional motion analysis laboratory with concomitant electromyography (EMG) measurements. Maximal isometric lower limb muscle strength was assessed by handheld dynamometry. Players were prospectively followed for 2 years after baseline testing, and all magnetic resonance imaging (MRI) verified ACL injuries were registered. The effect of 16 risk factor candidates on the relative risk (RR) of ACL injury was estimated using Poisson regression analysis. RESULTS: Ninety players (age 16.9 ± 1.2 years) were included in the analyses. Nine first-time ACL injuries (injury incidence 10.0% (95% confidence interval (CI) 5.4-18.6%)) were registered during the 2-year follow-up period. Four risk factor candidates were significantly associated with the risk of ACL injury: (1) hip flexion angle at initial contact (IC) [RR 0.56, 95% confidence interval (CI) 0.34-0.92], (2) internal knee rotation angle at IC [RR 1.13, 95% CI 1.08-1.19], (3) semitendinosus EMG activity 50 ms prior to IC [RR: 0.62, 95% CI 0.43-0.89], and (4) external hip rotator strength [RR: 0.77, 95% CI 0.66-0.89]. CONCLUSION: Four distinct ACL injury risk factors related to the side-cutting manoeuvre were identified in a population of adolescent female elite football and team handball players with no previous ACL injury. As ACL injury typically occur during side-cutting, intervention programmes to modify these risk factors pose a promising strategy for ACL injury prevention in adolescent female elite football and team handball. LEVEL OF EVIDENCE: II.
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Lesões do Ligamento Cruzado Anterior , Traumatismos em Atletas , Futebol Americano , Adolescente , Lesões do Ligamento Cruzado Anterior/epidemiologia , Atletas , Traumatismos em Atletas/epidemiologia , Feminino , Futebol Americano/lesões , Humanos , Estudos Prospectivos , Fatores de RiscoRESUMO
Due to a mix-up an older couple (69 years and 71 years) ate a meal with herbs from their garden that contained leaves of monkshood (Aconitum napellus). The monkshood plants grew close to the herbs in their garden. Both patients developed the typical symptoms of aconitine poisoning with paresthesia, hypotension and bradycardia. Over the course of time both developed cardiac arrhythmia with ventricular extrasystoles and required monitoring on the intensive care unit (ICU). The husband was more severely affected and needed catecholamines for successful treatment of hypotension (70/40â¯mmHg) and bradycardia (45â¯bpm). The toxicological analysis of the patients' serum taken 3.5â¯h after ingestion led to the detection of 1.8â¯ng/ml and 2.0â¯ng/ml aconitine, respectively. The patients were discharged in good general condition after 1 and 2 days, respectively. Monkshood (Aconitum napellus) is one of the most toxic native plants that can also be found in gardens due to its popularity as an ornamental plant. All parts of the plant contain toxic diterpenoid alkaloids, such as aconitine. Aconitine causes persistent activation of the fast voltage-gated sodium channels resulting in severe cardiac and neurological toxicity. Treatment of aconitine-induced ventricular arrhythmias is challenging as they are often refractory to electrical cardioversion and antiarrhythmic drugs.
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Aconitum , Levisticum , Intoxicação , Aconitina , Arritmias Cardíacas/induzido quimicamente , Arritmias Cardíacas/terapia , Humanos , Folhas de PlantaAssuntos
Dermatite Atópica , Eczema , Biomarcadores , Dermatite Atópica/diagnóstico , Epiderme , Humanos , PeleRESUMO
BACKGROUND: Testicular lymphoma is a rare malignancy affecting mainly elderly men, the majority representing diffuse large B-cell lymphoma (DLBCL). Its relapse rate is higher than that of nodal DLBCL, often affecting the central nervous system (CNS) with dismal prognosis. PATIENTS AND METHODS: We searched for patients with testicular DLBCL (T-DLBCL) involvement from the pathology databases of Southern Finland University Hospitals and the Danish Lymphoma Registry. Clinical information was collected, and outcomes between treatment modalities were evaluated. Progression-free survival (PFS), disease-specific survival (DSS) and overall survival (OS) were assessed using Kaplan-Meier and Cox proportional hazards methods. RESULTS: We identified 235 patients; of whom, 192 were treated with curative anthracycline-based chemotherapy. Full survival data were available for 189 patients. In univariate analysis, intravenous CNS-directed chemotherapy, and irradiation or orchiectomy of the contralateral testis translated into favourable PFS, DSS and OS, particularly among the elderly patients (each p ≤ 0.023). Intrathecal chemotherapy had no impact outcome. In multivariate analyses, the advantage of intravenous CNS-directed chemotherapy (hazard ration [HR] for OS, 0.419; 95% confidence interval [CI], 0.256-0.686; p = 0.001) and prophylactic treatment of contralateral testis (HR for OS, 0.514; 95% CI, 0.338-0.782; p = 0.002) was maintained. Rituximab improved survival only among high-risk patients (International Prognostic Index≥3, p = 0.019). The cumulative risk of CNS progression was 8.4% and did not differ between treatment modalities. CONCLUSION: The results support the use of CNS-directed chemotherapy and prophylactic treatment of the contralateral testis in patients with T-DLBCL involvement. Survival benefit appears resulting from better control of systemic disease rather than prevention of CNS progression.
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Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias do Sistema Nervoso Central/prevenção & controle , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Neoplasias Testiculares/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias do Sistema Nervoso Central/mortalidade , Neoplasias do Sistema Nervoso Central/secundário , Bases de Dados Factuais , Dinamarca , Progressão da Doença , Finlândia , Humanos , Infusões Intravenosas , Infusão Espinal , Linfoma Difuso de Grandes Células B/mortalidade , Linfoma Difuso de Grandes Células B/patologia , Linfoma Difuso de Grandes Células B/radioterapia , Masculino , Pessoa de Meia-Idade , Orquiectomia , Intervalo Livre de Progressão , Sistema de Registros , Medição de Risco , Fatores de Risco , Neoplasias Testiculares/mortalidade , Neoplasias Testiculares/patologia , Neoplasias Testiculares/radioterapia , Fatores de TempoRESUMO
BACKGROUND: A strong link between disease severity and Staphylococcus aureus colonization of the skin has been reported in patients with atopic dermatitis (AD). OBJECTIVES: To examine temporal variations in S. aureus colonization and S. aureus CC type in patients with AD, and to investigate links to disease severity, skin barrier properties and filaggrin gene (FLG) mutations. METHODS: This was a follow-up study of a cohort of 101 adult patients with AD recruited from an outpatient clinic. Bacterial swabs were taken at baseline and follow-up from lesional skin, nonlesional skin and the nose. Swabs positive for S. aureus were characterized by spa and the respective clonal complex (CC) type was assigned. Patients were characterized with respect to disease severity [Scoring Atopic Dermatitis (SCORAD)], skin barrier properties [transepidermal water loss (TEWL), pH] and FLG mutations. RESULTS: In total, 63 patients participated in a follow-up visit. Twenty-seven patients (43%) were colonized at both visits, 27 were colonized at only one visit and nine (14%) were not colonized at either visit. Of patients colonized at both visits, 52% remained colonized with the same CC type at follow-up. Change in CC type was related to an increase in SCORAD of 10·7 points; patients who carried the same CC type had a reduction in SCORAD of 4·4 points. Significantly higher skin pH was found in patients colonized at both visits, while change in CC type was not related to TEWL, pH or FLG mutations. CONCLUSIONS: The data indicate that temporal variation in S. aureus CC type is linked to flares of the disease.
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Dermatite Atópica/microbiologia , Infecções Cutâneas Estafilocócicas/microbiologia , Staphylococcus aureus/imunologia , Adulto , Antígenos de Bactérias/imunologia , Antígenos de Bactérias/isolamento & purificação , Técnicas de Tipagem Bacteriana , Dermatite Atópica/diagnóstico , Dermatite Atópica/imunologia , Progressão da Doença , Feminino , Proteínas Filagrinas , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Pele/microbiologia , Infecções Cutâneas Estafilocócicas/diagnóstico , Infecções Cutâneas Estafilocócicas/imunologia , Staphylococcus aureus/isolamento & purificação , Adulto JovemRESUMO
The introduction of the anti-CD20 antibody rituximab in combination with chemotherapy (R-chemo) has improved the prognosis of patients with follicular lymphoma (FL). During the last decade, the addition of a maintenance treatment with rituximab (MR) after R-chemo has been tested with the hope of further improving the outcome of these patients. Using 2 independent population-based cohorts, we investigated the effect of up-front MR on time related end points as well as the risk of histological transformation (HT). FL patients were included if they: (1) completed first-line induction treatment with R-chemo, (2) were alive after induction treatment and eligible for MR, and (3) had no evidence of HT at this time point. The training cohort consisted of 733 Danish patients of whom 364 were consolidated with MR; 369 were not. Patients receiving MR more often had advanced clinical stage (90% vs 78%), high Follicular Lymphoma International Prognostic Index (FLIPI) score (64% vs 55%), and bone marrow infiltration (49% vs 40%). Those consolidated with MR had an improved 5-year overall survival (OS; 89% vs 81%; P = .001) and progression-free survival (PFS; 72% vs 60%; P < .001). In the training cohort, MR was associated with a reduction of HT risk (P = .049). Analyses of an independent validation cohort of 190 Finnish patients confirmed the favorable impact of MR on 5-year OS (89% vs 81%; P = .046) and PFS (70% vs 57%; P = .005) but did not find a reduced risk of HT. The present population-based data suggest that the outcome of patients with FL has improved after consolidation of R-chemo with MR.
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Linfoma Folicular/tratamento farmacológico , Quimioterapia de Manutenção/métodos , Rituximab/uso terapêutico , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Estudos de Coortes , Quimioterapia de Consolidação/métodos , Feminino , Humanos , Linfoma Folicular/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Países Escandinavos e Nórdicos , Análise de Sobrevida , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Consumption of oily fish or fish oil during pregnancy, lactation and infancy has been linked to a reduction in the development of allergic diseases in childhood. METHODS: In an observational study, Icelandic children (n = 1304) were prospectively followed from birth to 2.5 years with detailed questionnaires administered at birth and at 1 and 2 years of age, including questions about fish oil supplementation. Children with suspected food allergy were invited for physical examinations, allergic sensitization tests, and a double-blind, placebo-controlled food challenge if the allergy testing or clinical history indicated food allergy. The study investigated the development of sensitization to food and confirmed food allergy according to age and frequency of postnatal fish oil supplementation using proportional hazards modelling. RESULTS: The incidence of diagnosed food sensitization was significantly lower in children who received regular fish oil supplementation (relative risk: 0.51, 95% confidence interval: 0.32-0.82). The incidence of challenge-confirmed food allergy was also reduced, although not statistically significant (0.57, 0.30-1.12). Children who began to receive fish oil in their first half year of life were significantly more protected than those who began later (P = .045 for sensitization, P = .018 for allergy). Indicators of allergy severity decreased with increased fish oil consumption (P = .013). Adjusting for parent education and allergic family history did not change the results. CONCLUSION: Postnatal fish oil consumption is associated with decreased food sensitization and food allergies in infants and may provide an intervention strategy for allergy prevention.
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Suplementos Nutricionais , Óleos de Peixe/administração & dosagem , Hipersensibilidade Alimentar/epidemiologia , Hipersensibilidade Alimentar/prevenção & controle , Estudos de Coortes , Feminino , Hipersensibilidade Alimentar/diagnóstico , Humanos , Islândia/epidemiologia , Imunização , Lactente , Recém-Nascido , Estudos Longitudinais , Masculino , Vigilância em Saúde Pública , Fatores de RiscoRESUMO
BACKGROUND: Component-resolved diagnosis (CRD) has revealed significant associations between IgE against individual allergens and severity of hazelnut allergy. Less attention has been given to combining them with clinical factors in predicting severity. AIM: To analyze associations between severity and sensitization patterns, patient characteristics and clinical history, and to develop models to improve predictive accuracy. METHODS: Patients reporting hazelnut allergy (n = 423) from 12 European cities were tested for IgE against individual hazelnut allergens. Symptoms (reported and during Double-blind placebo-controlled food challenge [DBPCFC]) were categorized in mild, moderate, and severe. Multiple regression models to predict severity were generated from clinical factors and sensitization patterns (CRD- and extract-based). Odds ratios (ORs) and areas under receiver-operating characteristic (ROC) curves (AUCs) were used to evaluate their predictive value. RESULTS: Cor a 9 and 14 were positively (OR 10.5 and 10.1, respectively), and Cor a 1 negatively (OR 0.14) associated with severe symptoms during DBPCFC, with AUCs of 0.70-073. Combining Cor a 1 and 9 improved this to 0.76. A model using a combination of atopic dermatitis (risk), pollen allergy (protection), IgE against Cor a 14 (risk) and walnut (risk) increased the AUC to 0.91. At 92% sensitivity, the specificity was 76.3%, and the positive and negative predictive values 62.2% and 95.7%, respectively. For reported symptoms, associations and generated models proved to be almost identical but weaker. CONCLUSION: A model combining CRD with clinical background and extract-based serology is superior to CRD alone in assessing the risk of severe reactions to hazelnut, particular in ruling out severe reactions.
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Corylus/imunologia , Hipersensibilidade a Noz/diagnóstico , Hipersensibilidade a Noz/imunologia , Alérgenos/imunologia , Antígenos de Plantas/imunologia , Área Sob a Curva , Método Duplo-Cego , Humanos , Imunoglobulina E/sangue , Análise Multivariada , Curva ROC , Sensibilidade e EspecificidadeRESUMO
AIM OF THE STUDY: Based on an abundance of information on the internet, psychotropic plants and mushrooms are of increasing relevance as legal and cheap alternatives to other illicit drugs. Due to the lack of a German database, the abuse of selected biogenic drugs using reported exposures to 3 German Poison Information Centres (PICs) was examined. METHODS: Information on abuse of biogenic drugs was collected from the German PICs in Berlin, Erfurt and Fribourg (2007-2013). RESULTS: 602 drug abuses were reported to the selected PICs. 52% reported consumption of tropane alkaloid-containing plants (Angel's trumpet, Thorn apple, Belladonna), 25% of psilocybin-containing mushrooms and 10% of nutmeg. Angel's trumpet was identified as the most abused plant. Consumers of tropane alkaloid-containing plants were mainly adolescents, whereas the majority of the abusers of psilocybin-containing mushrooms and nutmeg were rather young grown-ups and school children, respectively. A preponderance of moderate and severe effects (55%) could be noticed for exposures to tropane alkaloid-containing plants. More than 90% of suspected cases of tropane alkaloid-containing as well as psilocybin-containing plants abuse resulted in the treatment recommendation 'surveillance in hospital'. Mydriasis, hallucinations, tachycardia and agitation were the main symptoms after the abuse of biogenic drugs. CONCLUSIONS: The data from the PICs suggest abuse of biogenic drugs in parts of Germany. A decreasing trend is observed, probably caused by the competition with new synthetic designer drugs. The results underline the dominance of Angel's trumpet in the abuse of biogenic drugs and emphasize the importance of easy accessibility for the abuse of biogenic drugs. Unexpectedly, the number of nutmeg abuse cases increased during the investigated period.
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Alucinógenos , Transtornos Relacionados ao Uso de Substâncias , Adolescente , Agaricales , Criança , Alemanha , Humanos , Midríase , PlantasRESUMO
BACKGROUND: Pain and loss of function are cardinal symptoms associated with Subacromial impingement syndrome (SIS), while the presence and magnitude of deficits in strength and range of motion (ROM) are largely undescribed in non-athletic patients with SIS. Moreover, the relevance of impairments in strength and ROM to patient-reported shoulder function is not well described, even though testing of strength is recommended in clinical guidelines. The purpose of this study was, first, to investigate impairments in glenohumeral and scapulothoracic strength and in abduction and internal rotation ROM in patients with SIS. Secondly, to investigate the influence of these impairments on patient-reported shoulder function. METHODS: Cross-sectional study based on a consecutive cohort of 157 patients referred to specialist examination and diagnosed with shoulder impingement (SIS) using predefined validated diagnostic criteria. Prior to specialist examination, questionnaires regarding shoulder function (Shoulder Pain And Disability Index, SPADI) demographics and kinesiophobia (TSK-11) were collected, and shoulder strength and ROM was measured by trained testers, with the patient reporting pain levels during testing and for the last week. Impairments in strength (abduction, external-rotation, (protraction and horizontal-extension) and ROM (abduction and internal rotation) were investigated in patients with unilateral shoulder pain, using one-sample t-tests. SPADI total score (SPADI) and SPADI function score (SPADI-F), were chosen as dependent variables in multiple regressions to investigate the influence of impairments on patient-reported shoulder function. Independent variables of interest were; strength in abduction and external rotation, abduction ROM, pain-during-tests, pain-last-week and kinesiophobia. RESULTS: Significant impairments were found for all impairment tests, but most pronounced for glenohumeral strength and abduction ROM (29-33% deficits), and less for scapulothoracic strength and internal rotation ROM (8-18% deficits). Pain variables influenced SPADI and SPADI-F score to a high degree (R2 = 23.4-31.6%, p < 0.001), while strength and ROM did not. CONCLUSION: Substantial strength and ROM impairments were found in patients with SIS. Only pain significantly influenced patient-reported function, while impairments did not. As SPADI score does not reflect the substantial strength and ROM impairments in external rotation and abduction observed in patients with SIS, supplemental assessment of these impairments seems important.
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Avaliação da Deficiência , Força Muscular/fisiologia , Escápula/fisiopatologia , Síndrome de Colisão do Ombro/fisiopatologia , Articulação do Ombro/fisiopatologia , Dor de Ombro/fisiopatologia , Adulto , Idoso , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor/métodos , Escápula/patologia , Autorrelato , Síndrome de Colisão do Ombro/diagnóstico , Síndrome de Colisão do Ombro/epidemiologia , Articulação do Ombro/patologia , Dor de Ombro/diagnóstico , Dor de Ombro/epidemiologiaRESUMO
Nanoscale spacing between the plasma membrane and the underlying cortical actin cytoskeleton profoundly modulates cellular morphology, mechanics, and function. Measuring this distance has been a key challenge in cell biology. Current methods for dissecting the nanoscale spacing either limit themselves to complex survey design using fixed samples or rely on diffraction-limited fluorescence imaging whose spatial resolution is insufficient to quantify distances on the nanoscale. Using dual-color super-resolution STED (stimulated-emission-depletion) microscopy, we here overcome this challenge and accurately measure the density distribution of the cortical actin cytoskeleton and the distance between the actin cortex and the membrane in live Jurkat T-cells. We found an asymmetric cortical actin density distribution with a mean width of 230 (+105/-125) nm. The spatial distances measured between the maximum density peaks of the cortex and the membrane were bi-modally distributed with mean values of 50 ± 15 nm and 120 ± 40 nm, respectively. Taken together with the finite width of the cortex, our results suggest that in some regions the cortical actin is closer than 10 nm to the membrane and a maximum of 20 nm in others.
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BACKGROUND: Atopic dermatitis (AD) is a prevalent disease with significant impact on physical health and quality of life. Staphylococcus aureus has been directly correlated to disease severity, and may also be a contributing causal factor in the pathogenesis of AD. OBJECTIVES: The primary aim was to assess differences in S. aureus colonization in patients with AD with and without filaggrin gene mutations. The secondary aim was to assess disease severity in relation to S. aureus colonization. Exploratory analyses were performed to investigate S. aureus genetic lineages in relation to filaggrin gene (FLG) mutations and disease severity. METHODS: Adult patients with AD (n = 101) were included in the study. Bacterial swabs were taken from lesional skin, nonlesional skin and the nose. Swabs positive for S. aureus were characterized by spa and the respective clonal complex (CC) type assigned. Patients were characterized with respect to disease severity (Scoring Atopic Dermatitis) and FLG mutations (n = 88). Fisher's exact test was used to analyse differences in S. aureus colonization in relation to FLG mutations. RESULTS: Of the 101 patients included, 74 (73%) were colonized with S. aureus. Of the colonized patients, 70 (95%) carried only one CC type in all three different sampling sites. In lesional skin, S. aureus was found in 24 of 31 patients with FLG mutations vs. 24 of 54 wild-type patients (P = 0·0004). Staphylococcus aureusCC1 clonal lineage was more prevalent in patients with FLG mutations (n = 10) than in wild-type patients (n = 2) (P = 0·003). No specific bacterial lineage was linked to disease severity. CONCLUSIONS: Increased S. aureus colonization in patients with AD with FLG mutations, and increased prevalence of CC1 in patients with FLG mutations, suggest that host-microbe interactions and clonal differences in S. aureus are important for colonization of AD skin.
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Dermatite Atópica/microbiologia , Interações Hospedeiro-Patógeno/genética , Proteínas de Filamentos Intermediários/genética , Mutação/genética , Doenças Nasais/microbiologia , Infecções Estafilocócicas/genética , Adulto , Idoso , Proteínas de Bactérias/metabolismo , Dermatite Atópica/genética , Feminino , Proteínas Filagrinas , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Nasais/genética , Infecções Cutâneas Estafilocócicas/genética , Staphylococcus aureus/classificação , Adulto JovemRESUMO
Oral and oropharyngeal squamous cell carcinoma (OOSCC) have a low survival rate, mainly due to metastasis to the regional lymph nodes. For optimal treatment of these metastases, a neck dissection is required; however, inaccurate detection methods results in under- and over-treatment. New DNA prognostic methylation biomarkers might improve lymph node metastases detection. To identify epigenetically regulated genes associated with lymph node metastases, genome-wide methylation analysis was performed on 6 OOSCC with (pN+) and 6 OOSCC without (pN0) lymph node metastases and combined with a gene expression signature predictive for pN+ status in OOSCC. Selected genes were validated using an independent OOSCC cohort by immunohistochemistry and pyrosequencing, and on data retrieved from The Cancer Genome Atlas. A two-step statistical selection of differentially methylated sequences revealed 14 genes with increased methylation status and mRNA downregulation in pN+ OOSCC. RAB25, a known tumor suppressor gene, was the highest-ranking gene in the discovery set. In the validation sets, both RAB25 mRNA (P = 0.015) and protein levels (P = 0.012) were lower in pN+ OOSCC. RAB25 mRNA levels were negatively correlated with RAB25 methylation levels (P < 0.001) but RAB25 protein expression was not. Our data revealed that promoter methylation is a mechanism resulting in downregulation of RAB25 expression in pN+ OOSCC and decreased expression is associated with lymph node metastasis. Detection of RAB25 methylation might contribute to lymph node metastasis diagnosis and serve as a potential new therapeutic target in OOSCC.
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Carcinoma de Células Escamosas/genética , Regulação para Baixo , Epigênese Genética , Neoplasias Orofaríngeas/genética , Proteínas rab de Ligação ao GTP/genética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Células Escamosas/patologia , Metilação de DNA , Feminino , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Neoplasias Orofaríngeas/patologia , Regiões Promotoras Genéticas , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Proteínas rab de Ligação ao GTP/metabolismoRESUMO
BACKGROUND: Atopic dermatitis (AD) affects quality of life (QoL) negatively in patients and their families. We examined the relationship between disease severity and QoL in patients with AD. METHODS: Consecutive, newly referred outpatients with AD, 4 years of age or older, were assessed from January 2012 onwards by means of the dermatology life quality index (DLQI, range 0-30), the Scoring of AD (SCORAD) disease severity score (range 0-103), filaggrin gene (FLG) mutation status and paraclinical tests related to allergy. RESULTS: A total of 250 patients with a mean age of 26.0 years were identified with complete data on DLQI; 148 (59.2%) females and 102 (40.8%) males. Of these 45.6% had asthma, 46.8% had hay fever, 22.7% had a loss-of-function mutation in FLG, and 61.9% had one or more inhalant allergic sensitizations. The correlation between SCORAD and DLQI was 0.42 (P < 0.001). After multivariate adjustment there was an increasing mean DLQI score with increasing disease severity measured by SCORAD (DLQI in mild = 5.30, moderate = 8.59 and severe = 11.94 AD), P-value for difference between groups <0.001; a higher mean DLQI among females than males (9.73 vs. 8.34), P = 0.028; and among patients reporting facial eczema (9.88 vs. 6.24), P = 0.012. No statistically significant influence on DLQI was found for hand or foot eczema, age, blood eosinophil count, allergic sensitization, asthma, hay fever, FLG mutation status and smoking. FLG null mutation status was not significantly associated with SCORAD. CONCLUSION: AD impacts negatively on the QoL, proportional to the severity of the disease. Furthermore, female sex and facial eczema are associated with low QoL. Positive FLG null mutation status is not associated with QoL or disease severity.
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Dermatite Atópica/fisiopatologia , Qualidade de Vida , Adolescente , Criança , Pré-Escolar , Feminino , Proteínas Filagrinas , Humanos , Masculino , Índice de Gravidade de DoençaRESUMO
An efficient strategy for the synthesis of complex small molecules from simple building blocks is presented. Key steps of the strategy include tandem Petasis and Diels-Alder reactions, and divergent complexity-generating cyclization cascades from a key dialdehyde intermediate. The methodology is validated through the synthesis of a representative compound set, which has been used in the production of 1617 molecules for the European Lead Factory.
RESUMO
We report two types of modifications to the natural product griseofulvin as strategies to improve solubility and metabolic stability: the conversion of aryl methyl ethers into aryl difluoromethyl ethers at metabolic hotspots and the conversion of the C-ring ketone into polar oximes. The syntheses of the analogues are described together with their solubility, metabolic half-life in vitro and antiproliferative effect in two cancer cell lines. We conclude that on balance, the formation of polar oximes is the most promising strategy for improving the properties of the analogues.