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1.
Diabetologia ; 62(8): 1518-1519, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31190157

RESUMO

The values given for copeptin levels in men in quartiles 1 and 2 (Table 1) were incorrect, and should have read.

2.
World J Urol ; 36(8): 1241-1246, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29523948

RESUMO

PURPOSE: To measure the usage rate of social media (SoMe) resources in the prostate cancer community, we performed a comprehensive quantitative and qualitative assessment of SoMe activity on the topic of PCa on the four most frequented platforms. METHODS: We scanned the SoMe platforms Facebook, Twitter, YouTube, and Instagram for "prostate cancer" as a cross-sectional analysis or during a defined time period. Sources were included if their communication centered on PCa by title and content. We assessed activity measurements for each SoMe source and classified the sources into six functional categories. RESULTS: We identified 99 PCa-related Facebook groups that amassed 31,262 members and 90 Facebook pages with 283,996 "likes". On YouTube, we found 536 PCa videos accounting for 43,966,634 views, 52,655 likes, 8597 dislikes, and 12,393 comments. During a 1-year time period, 32,537 users generated 110,971 tweets on #ProstateCancer on Twitter, providing over 544 million impressions. During a 1-month time period, 638 contributors posted 1081 posts on Instagram, generating over 22,000 likes and 4,748,159 impressions. Among six functional categories, general information/support dominated the SoMe landscape on all SoMe platforms. CONCLUSION: SoMe activity on the topic of PCa on the four most frequented platforms is high. Facebook groups, YouTube videos, and Twitter tweets are mainly used for giving general information on PCa and education. High SoMe utilization in the PCa community underlines its future role for communication of PCa.


Assuntos
Neoplasias da Próstata , Mídias Sociais/estatística & dados numéricos , Estudos Transversais , Humanos , Masculino
3.
Acta Anaesthesiol Scand ; 58(4): 428-36, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24617620

RESUMO

BACKGROUND: Further characterization of the post-cardiac arrest syndrome (PCAS) is essential to better understand the mechanisms resulting in injury and death. We investigated serial serum concentrations of the stress hormone c-terminal provasopressin (CT-proAVP or copeptin), the cardiac biomarker MR-proANP and a biomarker of oxidation injury, Peroxiredoxin 4 (Prx4) in patients treated with mild hypothermia (MHT) after cardiac arrest, and studied their association to the PCAS and long-term outcome. METHODS: Serum samples from cardiac arrest patients were collected serially: at admission, 2, 6, 12, 24, 36, 48 and 72 h after cardiac arrest. CT-proAVP, MR-proANP and Prx4 concentrations were determined and tested for association with two surrogate markers of PCAS (time to return of spontaneous circulation and circulation-SOFA score) and with cerebral performance category (CPC) at 6 months. Good outcome was defined as CPC 1 to 2. RESULTS: Eighty-four patients were included. CT-proAVP, MR-proANP and Prx4 were early biomarkers with maximum concentrations soon after cardiac arrest and with a significant discriminatory ability between good and poor long-term outcome at most time points. CT-proAVP predicted a poor outcome with the highest accuracy, followed by MR-proANP and Prx4 (area under the receiving operating characteristics curve at 12 h of 0.85, 0.77 and 0.76 respectively). CT-proAVP and MR-proANP showed best correlation to the PCAS. CONCLUSION: In 84 resuscitated patients receiving MHT after cardiac arrest, there is a significant difference in concentrations of CT-proAVP, MR-proANP and Prx4 between patients with good and poor outcome. CT-proAVP and MR-proANP have a significant correlation to surrogate markers of the PCAS.


Assuntos
Fator Natriurético Atrial/sangue , Biomarcadores/sangue , Glicopeptídeos/sangue , Parada Cardíaca/metabolismo , Parada Cardíaca/terapia , Peroxirredoxinas/sangue , Idoso , Feminino , Humanos , Hipotermia Induzida , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Curva ROC , Resultado do Tratamento
4.
Diabetologia ; 56(8): 1680-8, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23624546

RESUMO

AIM/HYPOTHESIS: Arginine vasopressin (AVP), the hormone important for maintaining fluid balance, has been shown to cause kidney damage in rodent models of diabetes. We investigated the potential role of AVP in the natural course of kidney function decline in diabetes in an epidemiological study. METHODS: Plasma copeptin, a surrogate for AVP, was measured in baseline samples from patients with type 2 diabetes treated in primary care and included in the Zwolle Outpatient Diabetes project Integrating Available Care (ZODIAC) cohort. RESULTS: Samples from 1,328 patients were available; 349 were analysed separately because they used renin-angiotensin-aldosterone system inhibition (RAASi), which influences albumin/creatinine ratio (ACR) and estimated (e)GFR. In the other 979 patients (46% men, age 68 years [58-75], ACR 1.8 mg/mmol [0.9-5.7], eGFR 67 ± 14 ml min(-1) 1.73 m(-2)) baseline copeptin (5.3 pmol/l [3.2-9.5]) was significantly associated with log e [ACR] and eGFR, even after adjustment for sex, age and risk factors for kidney function decline (standardised [std] ß 0.13, p < 0.001, std ß -0.20, p < 0.001 respectively). Follow-up data were available for 756 patients (6.5 years [4.1-9.6]). Baseline copeptin was associated with increase in ACR (std ß 0.09, p = 0.02), but lost significance after adjustment (std ß 0.07, p = 0.08). Copeptin was associated with a decrease in eGFR after adjustment (std ß -0.09, p = 0.03). The strength of the association of copeptin with change in eGFR was stronger than that of established risk factors for kidney function decline (e.g. BMI, HbA1c). In patients who used RAASi there was a significant association between baseline copeptin and ACR and eGFR, but not with change in ACR and eGFR. CONCLUSIONS/INTERPRETATION: In patients with diabetes not using RAASi a higher baseline copeptin concentration is significantly associated with higher baseline ACR and lower eGFR values and with a decline in eGFR during follow-up. This last association is independent of, and stronger than, most traditional risk factors for kidney function decline.


Assuntos
Arginina Vasopressina/sangue , Biomarcadores/sangue , Diabetes Mellitus Tipo 2/sangue , Taxa de Filtração Glomerular/fisiologia , Glicopeptídeos/sangue , Idoso , Albuminas/metabolismo , Inibidores da Enzima Conversora de Angiotensina/farmacologia , Creatinina/sangue , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Sistema Renina-Angiotensina/efeitos dos fármacos
5.
J Intern Med ; 273(4): 359-67, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23510366

RESUMO

OBJECTIVES: The aim of the study was to investigate the resting levels of novel cardiovascular biomarkers in common types of noncardiac syncope. DESIGN AND SETTING: An observational study was conducted including 255 patients (mean age 60 years, range 15-93; 45% men) with unexplained syncopal attacks. Subjects underwent an expanded head-up tilt test including carotid sinus massage, and nitroglycerin provocation if indicated. Using logistic regression, we explored the associations between specific diagnoses of syncope and resting levels of circulating biomarkers: C-terminal pro-arginine vasopressin (CT-proAVP), C-terminal endothelin-1 precursor fragment (CT-proET-1), midregional fragments of pro-atrial natriuretic peptide (MR-proANP) and pro-adrenomedullin (MR-proADM). RESULTS: A total of 142 (56%) patients were diagnosed with vasovagal syncope (VVS), 85 (33%) with orthostatic hypotension (OH) and 47 (18%) with carotid sinus hypersensitivity (CSH); in addition, 74 (29%) patients had more than one diagnosis. Thirty-five patients (14%) demonstrated a cardioinhibitory reflex. The probability of VVS was highest in the first quartile of MR-proANP [Q1 vs. Q4: odds ratio (OR) 5.57, 95% confidence interval (CI) 1.86-16.74; P < 0.001] and CT-proET-1 (OR 7.17, 95% CI 2.43-21.13; P < 0.001). By contrast, the probability of OH was highest in the fourth quartile of CT-proET-1 (Q4 vs. Q1: OR 8.66, 95% CI 2.49-30.17; P < 0.001). Furthermore, CSH was most frequently observed in the first quartile of MR-proANP (Q1 vs. Q4: OR 6.57, 95% CI 1.62-26.62; P = 0.008) among those over 60 years of age, whereas the cardioinhibitory reflex was strongly associated with low CT-proET-1 levels (Q1 vs. Q4: OR 69.7, 95% CI 6.97-696.6; P < 0.001). Moreover, in patients with VVS, a high concentration of CT-proET-1 was predictive of OH (OR per 1 SD 2.4, 95% CI 1.15-5.02; P = 0.02), whereas low CT-proET-1 suggested involvement of the cardioinhibitory reflex (OR per 1SD 0.42, 95% CI 0.25-0.70; P = 0.001). CONCLUSIONS: The levels of MR-proANP and CT-proET-1 are markedly changed in common forms of syncope, suggesting the involvement of novel neurohormonal mechanisms in syncopal attacks.


Assuntos
Biomarcadores/sangue , Eletrocardiografia , Síncope/sangue , Adolescente , Adrenomedulina/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Fator Natriurético Atrial/sangue , Endotelina-1/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fragmentos de Peptídeos/sangue , Estudos Retrospectivos , Síncope/fisiopatologia , Vasopressinas/sangue , Adulto Jovem
6.
Int J Obes (Lond) ; 37(4): 598-603, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22614056

RESUMO

BACKGROUND: High plasma copeptin (copeptin), the C-terminal fragment of arginine vasopressin pro-hormone, has been associated with the metabolic syndrome (MetS), diabetes mellitus (DM) development and nephropathy. Here we tested whether elevated copeptin level is associated with later development of the MetS, its individual components and microalbuminuria. METHODS: We analysed copeptin at baseline (1991-1994) in the population-based Malmö Diet and Cancer Study cardiovasular cohort and re-examined 2064 subjects 15.8 years later (mean age 72.8 years, 59% women) with oral glucose tolerance test and measurement of MetS and its individual components. RESULTS: After age and sex adjustment, increasing quartiles of copeptin at baseline (the lowest quartile as reference) were associated with MetS (P for trend=0.008), incident abdominal obesity (P for trend=0.002), DM (P for trend=0.001) and microalbuminuria (P for trend=0.002). After additional adjustment for all the MetS components at baseline, increasing copeptin quartiles predicted incident abdominal obesity (odds ratios 1.55, 1.30 and 1.59; P for trend=0.04), DM (odds ratios 1.18, 1.32 and 1.46; P for trend=0.04) and microalbuminuria (odds ratios 1.05, 1.08 and 1.65; P for trend=0.02) but not MetS (P for trend=0.19) at the reexamination. Further, the relationship between copeptin and microalbuminuria was independent of baseline C-reactive protein, incident DM and incident hypertension. CONCLUSION: Copeptin independently predicts DM and abdominal obesity but not the cluster of MetS. Apart from predicting DM and abdominal obesity, elevated copeptin signals increased risk of microalbuminuria. Interestingly, the association between copeptin and later microalbuminuria was independent of both prevalent and incident DM and hypertension. Our findings suggest a relationship between a dysregulated vasopressin system and cardiometabolic risk, which could have implications for risk assessment and novel preventive treatments.


Assuntos
Albuminúria/metabolismo , Arginina Vasopressina/metabolismo , Doenças Cardiovasculares/metabolismo , Diabetes Mellitus/metabolismo , Glicopeptídeos/metabolismo , Síndrome Metabólica/metabolismo , Neoplasias/metabolismo , Obesidade Abdominal/metabolismo , Distribuição por Idade , Idade de Início , Idoso , Idoso de 80 Anos ou mais , Albuminúria/epidemiologia , Biomarcadores/metabolismo , Proteína C-Reativa/metabolismo , Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus/epidemiologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Síndrome Metabólica/epidemiologia , Pessoa de Meia-Idade , Neoplasias/epidemiologia , Obesidade Abdominal/epidemiologia , Valor Preditivo dos Testes , Prevalência , Estudos Prospectivos , Fatores de Risco , Distribuição por Sexo , Suécia/epidemiologia , Fatores de Tempo
7.
Diabetologia ; 55(7): 1963-70, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22526609

RESUMO

AIMS/HYPOTHESIS: Vasopressin plays a role in osmoregulation, glucose homeostasis and inflammation. Therefore, plasma copeptin, the stable C-terminal portion of the precursor of vasopressin, has strong potential as a biomarker for the cardiometabolic syndrome and diabetes. Previous results were contradictory, which may be explained by differences between men and women in responsiveness of the vasopressin system. The aim of this study was to evaluate the usefulness of copeptin for prediction of future type 2 diabetes in men and women separately. METHODS: From the Prevention of Renal and Vascular Endstage Disease (PREVEND) study, 4,063 women and 3,909 men without diabetes at baseline were included. A total of 208 women and 288 men developed diabetes during a median follow-up of 7.7 years. RESULTS: In multivariable-adjusted models, we observed a stronger association of copeptin with risk of future diabetes in women (OR 1.49 [95% CI 1.24, 1.79]) than in men (OR 1.01 [95% CI 0.85, 1.19]) (p (interaction) < 0.01). The addition of copeptin to the Data from the Epidemiological Study on the Insulin Resistance Syndrome (DESIR) clinical model improved the discriminative value (C-statistic,+0.007, p = 0.02) and reclassification (integrated discrimination improvement [IDI] = 0.004, p < 0.01) in women. However, we observed no improvement in men. The additive value of copeptin in women was maintained when other independent predictors, such as glucose, high sensitivity C-reactive protein (hs-CRP) and 24 h urinary albumin excretion (UAE), were included in the model. CONCLUSIONS/INTERPRETATION: The association of plasma copeptin with the risk of developing diabetes was stronger in women than in men. Plasma copeptin alone, and along with existing biomarkers (glucose, hs-CRP and UAE), significantly improved the risk prediction for diabetes in women.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Angiopatias Diabéticas/sangue , Nefropatias Diabéticas/sangue , Glicopeptídeos/sangue , Falência Renal Crônica/sangue , Adulto , Idoso , Biomarcadores/sangue , Estudos de Coortes , Diabetes Mellitus Tipo 2/epidemiologia , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/prevenção & controle , Nefropatias Diabéticas/epidemiologia , Nefropatias Diabéticas/prevenção & controle , Feminino , Seguimentos , Humanos , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/prevenção & controle , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Valor Preditivo dos Testes , Precursores de Proteínas/sangue , Fatores de Risco , Fatores Sexuais , Fatores de Tempo
8.
J Intern Med ; 272(5): 484-91, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22530956

RESUMO

OBJECTIVES: A number of inflammatory biomarkers such as C-reactive protein (CRP) are independent predictors of cardiovascular risk. The inflammatory biomarker procalcitonin (PCT) has previously been shown to be associated with coronary atherosclerosis and the metabolic syndrome. We evaluated the ability of PCT to predict future cardiovascular events in a population of apparently healthy individuals. DESIGN: We measured plasma PCT levels in 3713 subjects with no previous history of cardiovascular disease, randomly selected from the Malmö Diet and Cancer cohort. The correlation between PCT concentration and the incidence of coronary events, stroke and cardiovascular death over a median follow-up period of 13.7 years was studied using a Cox regression analysis corrected for age, sex, CRP level, traditional risk factors and renal function. RESULTS: Age and sex were strong determinants of PCT; the concentration of PCT was significantly higher in men than in women. PCT was associated with several of the established cardiovascular risk factors (CRP, hypertension, diabetes and renal function) as determined by multivariate linear regression. Of note, PCT was inversely correlated with HDL and smoking. We found significant correlations between PCT levels, coronary events and cardiovascular death. However, these relationships lost statistical significance when the analysis was corrected for CRP and the traditional risk factors. CONCLUSIONS: This is the largest population-based prospective study to demonstrate a positive association between plasma PCT levels and cardiovascular risk in subjects with no previous history of acute cardiovascular events. However, the high degree of covariation between PCT and other cardiovascular risk factors limits the value of PCT as an independent cardiovascular risk predictor.


Assuntos
Proteína C-Reativa/metabolismo , Calcitonina/sangue , Doenças Cardiovasculares/sangue , Precursores de Proteínas/sangue , Idoso , Biomarcadores/sangue , Biomarcadores/metabolismo , Peptídeo Relacionado com Gene de Calcitonina , Doenças Cardiovasculares/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Análise de Regressão , Fatores de Risco
9.
Phys Rev Lett ; 108(22): 225304, 2012 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-23003613

RESUMO

We present a universal method to create a tunable, artificial vector gauge potential for neutral particles trapped in an optical lattice. The necessary Peierls phase of the hopping parameters between neighboring lattice sites is generated by applying a suitable periodic inertial force such that the method does not rely on any internal structure of the particles. We experimentally demonstrate the realization of such artificial potentials, which generate ground-state superfluids at arbitrary nonzero quasimomentum. We furthermore investigate possible implementations of this scheme to create tunable magnetic fluxes, going towards model systems for strong-field physics.

10.
Urologe A ; 61(4): 407-410, 2022 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-34935996

RESUMO

The amendment to the collective agreement is intended to significantly improve the working conditions of physicians and includes longer-term duty scheduling, work on a maximum of two weekends per month, less overtime. Smaller hospitals often have problems implementing these requirements and have to make compromises. At least the overtime is now better paid-overall, an improvement in working conditions can only be achieved by increasing the number of staff, then better and more intensive training is also possible.


Assuntos
Motivação , Médicos , Hospitais , Humanos , Carga de Trabalho
11.
Urologie ; 61(6): 638-643, 2022 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-35925080

RESUMO

Against the background of the changes in the collective bargaining agreement-for municipal hospitals in the version of January 1, 2021, and for university hospitals in the version of March 7, 2020-this article deals with the legal consequences of chronic violations of the German Working Hours Act in medicine, but especially in surgical specialties such as urology. It includes an overview of current law and sanctions for violations and highlights responsibilities as well as exceptions. It is important to clarify the distribution of responsibilities with regard to working hours in the institution concerned in order to avoid fines and, in the worst case, imprisonment. It should also be clear who is liable in specific cases for persistent working time violations. When changing duty models, it is important to bear in mind that this can lead to a considerable deterioration in the opportunities for further training and education of physicians, meaning that in the long term the compatibility of further training in line with working hours can only be achieved with sufficient staffing of the hospitals. In some cases, this is diametrically opposed to economic interests in the health care system and thus presents an almost insoluble dilemma. In the view of the working group, structural changes in the diagnosis-related group (DRG)-based inpatient sector are needed in the near future.


Assuntos
Médicos , Urologia , Atenção à Saúde , Hospitais Municipais , Humanos
12.
J Intern Med ; 269(2): 160-71, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20964739

RESUMO

OBJECTIVE: we evaluated the prognostic role of circulating cardiovascular biomarkers in patients with a history of recent atrial fibrillation (AF). BACKGROUND: predicting long-term maintenance of sinus rhythm in patients with AF is difficult. METHODS: plasma concentrations of three specific cardiac markers [high-sensitivity troponin T (hsTnT), N-terminal probrain natriuretic peptide (NT-proBNP) and mid-regional proatrial natriuretic peptide (MR-proANP)] and three stable fragments of vasoactive peptides [mid-regional proadrenomedullin (MR-proADM), copeptin (CT-proAVP) and CT-proendothelin-1 (CT-proET-1)] were measured at baseline and after 6 and 12 months in 382 patients enrolled in the GISSI-AF study, a prospective randomized trial to determine the effect of valsartan to reduce the recurrence of AF. The association between these markers, clinical characteristics and recurrence of AF was tested by univariate and multivariate Cox models. RESULTS: mean patient age was 68 ± 9 years (37.2% females). A total of 84.8% of patients had a history of hypertension. In total, 59.7% qualified for history of AF because of successful cardioversion, 11.8% because of two or more episodes of AF in the 6 months preceding randomization and 28.5% because of both. Patients in AF at 6 or 12 months (203 (53.1%) with first recurrence) had significantly higher concentrations of most biomarkers. Despite low baseline levels, higher concentrations of hsTnT {adjusted hazard ratio (HR) [95% confidence intervals (CIs) for 1 SD increment] (1.15 [1.04-1.28], P = 0.007), MR-proANP (1.15 [1.01-1.30], P = 0.04), NT-proBNP (1.24 [1.11-1.39], P = 0.0001) and CT-proET-1 (1.16 [1.01-1.33], P = 0.03) independently predicted higher risk of a first recurrence of AF. Changes over time of MR-proANP tended to predict subsequent recurrence (adjusted HR [95%CI]) (1.53 [0.98-2.37], P = 0.06). CONCLUSION: circulating markers of cardiomyocyte injury/strain and endothelin are related to recurrence of AF in patients in sinus rhythm with a history of recent AF.


Assuntos
Fibrilação Atrial/diagnóstico , Biomarcadores/sangue , Idoso , Bloqueadores do Receptor Tipo 1 de Angiotensina II/uso terapêutico , Fibrilação Atrial/sangue , Fibrilação Atrial/prevenção & controle , Métodos Epidemiológicos , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Peptídeos Natriuréticos/sangue , Prognóstico , Prevenção Secundária , Tetrazóis/uso terapêutico , Troponina T/sangue , Valina/análogos & derivados , Valina/uso terapêutico , Valsartana
13.
Nephrol Dial Transplant ; 26(8): 2445-53, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21393612

RESUMO

BACKGROUND: The renoprotective effect of vasopressin V2 receptor antagonist (V2RA) is currently being tested in a clinical trial in early autosomal dominant polycystic kidney disease (ADPKD). If efficacious, this warrants life-long treatment with V2RA, however, with associated side effects as polydipsia and polyuria. We questioned whether we could reduce the side effects without influencing the renoprotective effect by starting the treatment later in the disease or by lowering drug dosage. METHODS: To investigate this, we administered V2RA OPC-31260 at a high (0.1%) and low (0.05%) dose to a tamoxifen-inducible kidney epithelium-specific Pkd1-deletion mouse model starting treatment at Day 21 (early) or 42 (advanced). After 3 and 6 weeks of treatment, we monitored physiologic and potential renoprotective effects. RESULTS: Initiation of V2RA treatment at advanced stage of the disease lacked renoprotective effects and had less pronounced physiologic effects than early initiation. After 3 weeks on a high dose, cyst ratio and kidney weight were reduced versus untreated controls (18 versus 25%, P = 0.05, and 0.33 versus 0.45 g, P = 0.03, respectively). After 6 weeks of treatment, however, this did not reach significance anymore, even at a high dose (cyst ratio 24 versus 27%, P = 0.12, and kidney weight 0.55 versus 0.66 g, P = 0.38). CONCLUSIONS: Our results suggest that intervention with V2RA should be instituted early in ADPKD and that it might be necessary to further increase the dosage of this drug later in the disease to decrease cyst growth.


Assuntos
Antagonistas dos Receptores de Hormônios Antidiuréticos , Benzazepinas/uso terapêutico , Modelos Animais de Doenças , Rim Policístico Autossômico Dominante/tratamento farmacológico , Animais , Relação Dose-Resposta a Droga , Feminino , Rim/citologia , Rim/efeitos dos fármacos , Rim/metabolismo , Masculino , Camundongos , Camundongos Knockout , Rim Policístico Autossômico Dominante/terapia , Proteína Quinase C
14.
Biomarkers ; 16(3): 281-7, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21438719

RESUMO

BACKGROUND: MRproADM and MRproANP can be used as diagnostic and prognostic markers in heart failure. AIM: The objective was to identify confounding factors for the interpretation of plasma MRproADM and MRproANP concentrations. METHODS: A total of 518 healthy volunteers with a mean age of 60.84 ± 7.41 years were analyzed. We evaluated the influence of demographic factors, renal function and echocardiographic indices on the candidate peptides. RESULTS: Multivariate analysis revealed that age (P < 0.001), BMI (P < 0.001) and eGFR (P < 0.001) were independent predictors for MRproADM concentrations in healthy subjects. The independent predictors for MRproANP were age (P < 0.001), female gender (P < 0.001), heart rate (P < 0.001) and eGFR (P = 0.039). CONCLUSION: The interpretation of both peptides is multifaceted due to confounders. Knowledge of these factors will further our understanding of how these peptides behave in health and in disease.


Assuntos
Adrenomedulina/sangue , Fator Natriurético Atrial/sangue , Precursores de Proteínas/sangue , Idoso , Fatores de Confusão Epidemiológicos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada
15.
Sci Total Environ ; 716: 137045, 2020 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-32059328

RESUMO

The hydrogen isotopic composition of leaf wax-derived n-alkanes (δ2Hn-alkanes) is a widely applied proxy for (paleo)climatic changes. It has been suggested that the coupling with the oxygen isotopic composition of hemicellulose-derived sugars (δ18Osugar) - an approach dubbed 'paleohygrometer' - might allow more robust and quantitative (paleo)hydrological reconstructions. However, the paleohygrometer remains to be evaluated and tested regionally. In this study, topsoil samples from South Africa, covering extensive environmental gradients, are analysed. δ2Hn-alkanes correlates significantly with the isotopic composition of precipitation (δ2Hp), whereas no significant correlation exists between δ18Osugar and δ18Op. The apparent fractionation (εapp) is the difference between δ2Hn-alkanes and δ2Hp (εapp 2H) and δ18Osugar and δ18Op (εapp 18O), respectively, and integrates i) isotopic enrichment due to soil water evaporation, ii) leaf (and xylem) water transpiration and iii) biosynthetic fractionation. We find no correlation of εapp 18O nor for εapp 2H with temperature, and no correlation of εapp 2H with potential evapotranspiration and an aridity index. By contrast, εapp 18O correlates significantly with both potential evapotranspiration and the aridity index. This highlights the strong effect of evapotranspirative enrichment on δ18Osugar. In study areas without plant predominance using Crassulacean Acid Metabolism (CAM), coupling δ18Osugar and δ2Hn-alkanes enables to reconstruct δ2Hp and δ18Op with an offset of Δδ2H = 6 ± 27‰ and Δδ18O = 0.8 ± 3.7‰, respectively, as well as relative humidity (RH) with an offset of ΔRH = 6 ± 17%. The paleohygrometer does, however, not work well for our study areas where CAM plants prevail (reconstructed δ18Op, δ2Hp and RH are off by 3.1‰, 27.2‰ and 31.7%). This probably reflects plant-specific (phenological) adaptations and/or post-photosynthetic exchange reactions related to CAM metabolism. Overall, our findings corroborate that δ2Hn-alkanes and δ18Osugar are valuable proxies, and the paleohygrometer is a promising approach for paleoclimate reconstructions in southern Africa.

16.
Urologe A ; 58(2): 109-113, 2019 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-30623217

RESUMO

Current surveys show that 45% of German urologic residents do not feel sufficiently prepared for their later urologic work, and 85% lack a structured training curriculum in their home institutions. Furthermore, they report a lack of transparency and evaluations as well as economic constraints. This gives reason to revise and adapt the current urologic training curriculum. In the following article we compare the current urologic curriculum with other disciplines and discuss chances and limits of possible future models. These include better definitions of basic training skills, specialization, a structured evaluation system, standardization of exams and room for research.


Assuntos
Internato e Residência , Urologia , Competência Clínica , Currículo , Especialização , Urologia/educação
17.
Sci Rep ; 9(1): 13640, 2019 09 20.
Artigo em Inglês | MEDLINE | ID: mdl-31541150

RESUMO

The prevalence of type 2 diabetes (T2D) has increased dramatically in Middle Eastern populations that represent the largest non-European immigrant group in Sweden today. As proneurotensin predicts T2D, the aim of this study was to investigate differences in proneurotensin levels across populations of Middle Eastern and Caucasian origin and to study its associations with indices of glucose regulation. Participants in the age 30 to 75 years, living in Malmö, Sweden, and born in Iraq or Sweden, were recruited from the census register. Anthropometrics and fasting samples were collected and oral glucose tolerance tests conducted assessing insulin secretion (DIo) as well as insulin sensitivity (ISI). A total of 2155 individuals participated in the study, 1398 were Iraqi-born and 757 were Swedish-born participants. Higher fasting proneurotensin levels were observed in Iraqi- compared to Swedish-born participants (137.5 vs. 119.8 pmol/L; p < 0.001) data adjusted for age, sex and body mass index. In Iraqi participants only, plasma proneurotensin was associated with impaired glucose regulation assessed as ISI, DIo and HbA1c, and significant interactions between country of birth and proneurotensin were observed (Pinteraction ISI = 0.048; Pinteraction DIo = 0.014; PinteractionHbA1c = 0.029). We report higher levels of proneurotensin in the general Middle Eastern population. The finding that Middle Eastern origin modifies the relationship of proneurotensin with indices of glucose regulation suggests that proneurotensin may be a stronger determinant of T2D in Middle Eastern as compared to Caucasian populations. These findings may explain part of the excess T2D risk in the Middle Eastern population but needs to be explored further.


Assuntos
Diabetes Mellitus Tipo 2/diagnóstico , Glucose/metabolismo , Neurotensina/sangue , Precursores de Proteínas/sangue , Adulto , Idoso , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/etnologia , Emigrantes e Imigrantes/estatística & dados numéricos , Feminino , Teste de Tolerância a Glucose , Humanos , Iraque/etnologia , Masculino , Pessoa de Meia-Idade , Suécia/etnologia , Migrantes
18.
Urologe A ; 58(8): 881-884, 2019 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-31236655

RESUMO

Due to demographic changes, the proportion of people requiring urological treatment will continue to rise. In order to better address this development, we need a well-trained and motivated urological medical community. Not only is continued education in urology an integral part of this, but it must also be embedded into future-oriented, flexible work-hour models, taking into account the German Work Time Act. Thus, in order to obtain a better assessment of the current situation of urological physicians undergoing specialist training, work -hour models currently used in urological clinics must be evaluated. This should allow conclusions to be drawn to find future-oriented solutions in order to do justice to the Future Offensive-Urology in 2025. Transparency, openness, and cooperation should be top priority between the DGU (German Association for Urology) working groups active in this field and the working groups of the BvDU (German Professional Association for Urologists).


Assuntos
Satisfação no Emprego , Urologistas/psicologia , Urologia/educação , Equilíbrio Trabalho-Vida , Carga de Trabalho , Humanos , Médicos
19.
Urologe A ; 58(8): 877-880, 2019 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-31267141

RESUMO

Currently, continuing medical evaluation takes place in Germany-but not nationally or regularly, and without national standards. Therefore, comparisons between different clinics and trainers can currently not be drawn. Survey modes, such as those that have existed in Switzerland for decades, could provide a constructive basis in the assessment of the current continuing medical education of urology residents and subsequently facilitate the discussion on improvements. This requires constructive cooperation of all involved, without attributing the responsibility only to the educators. Models of rewarding good continuing education should also be found.


Assuntos
Educação Médica Continuada/normas , Urologia/educação , Alemanha , Humanos , Garantia da Qualidade dos Cuidados de Saúde , Inquéritos e Questionários , Suíça , Urologia/normas
20.
Urologe A ; 58(8): 918-923, 2019 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-31300861

RESUMO

BACKGROUND: The working and continued training conditions of assistant physicians in urology in Germany have already been analyzed. But what about senior urologists in Germany? Under which conditions do they have to work? As far as we know no published data currently exist which illuminate the conditions of this special urological professional group, therefore, the results of this survey are presented. OBJECTIVE: To survey and evaluate the current working conditions of certified and senior urologists in Germany as comprehensively as possible. MATERIAL AND METHODS: The working group of employed physicians of the Professional Association of German Urologists (BvDU) carried out a survey within the framework of the urological senior physician forum 2016 and on-line via the e­mail distributor of the German Society for Urology (DGU). The questions involved the workload, working conditions and satisfaction, overtime performed, working hours and opt out regulations. RESULTS: A total of 176 senior physicians participated in the survey of which 88% were male and 12% female. In Germany there are 1125 senior physicians. The average age of the responders was 44.9 years. In more than 80% of the participants the average weekly working hours were over 50 h and 70% signed an opt out regulation. An association between an increasing job dissatisfaction above a working week over 55 h and an average attendance in on-call service over 4 h could be established. The number of on-call services had no influence on job satisfaction. A total of 43% (70 out of 162) of the participants stated that overtime hours were regularly forfeited and 12% (20 out of 162) that all overtime hours were forfeited. Approximately 30% of senior physicians in German urology were dissatisfied with the current working conditions in the present form. CONCLUSION: Based on the acquired data, adaptation and improvements in the working conditions of senior urologists are necessary in order to maintain the attractiveness of the occupational image and leading positions in German urology.


Assuntos
Estresse Ocupacional , Médicos/psicologia , Urologistas/psicologia , Urologia , Equilíbrio Trabalho-Vida , Carga de Trabalho , Adulto , Feminino , Alemanha , Humanos , Satisfação no Emprego , Masculino , Pessoa de Meia-Idade , Especialização , Inquéritos e Questionários , Carga de Trabalho/psicologia
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