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1.
Philos Trans R Soc Lond B Biol Sci ; 379(1903): 20220315, 2024 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-38643788

RESUMEN

Values play a significant role in decision-making, especially regarding nature. Decisions impact people and nature in complex ways and understanding which values are prioritised, and which are left out is an important task for improving the equity and effectiveness of decision-making. Based on work done for the IPBES Values Assessment, this paper develops a framework to support analyses of how decision-making influences nature as well as whose values get prioritised. The framework is used to analyse key areas of environmental policy: a) the present model for nature protection in market economies, b) the role of valuation in bringing nature values into decisions, and c) values embedded in environmental policy instruments, exemplified by protected areas for nature conservation and payments for ecosystem services. The analyses show that environmental policies have been established as mere additions to decision-making structures that foster economic expansion, which undermines a wide range of nature's values. Moreover, environmental policies themselves are also focused on a limited set of nature's diverse values. This article is part of the theme issue 'Bringing nature into decision-making'.


Asunto(s)
Conservación de los Recursos Naturales , Toma de Decisiones , Conservación de los Recursos Naturales/métodos , Política Ambiental , Humanos , Ecosistema , Naturaleza , Valores Sociales
2.
Contemp Clin Trials ; 114: 106685, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35065281

RESUMEN

INTRODUCTION: Reduced testosterone levels due to androgen deprivation therapy (ADT) in prostate cancer patients cause common side effects, such as reduced muscle strength and bone density, increased fat mass, sexual dysfunction and fatigue. Short-term exercise during ADT has proven to be safe and effective in exhibiting a positive impact on body composition, sexual dysfunction and fatigue. However, there are only three randomized controlled trials that investigate one-year supervised impact exercise interventions, none of which examined follow-up effects after the intervention. Therefore, this study will conduct a one-year impact exercise intervention and assess follow-up effects up to one year later. MATERIAL AND METHODS: The aim of the randomized, controlled Burgdorf study is to assess the effects of a supervised 12-month intensive multimodal exercise intervention in comparison to a moderate aerobic exercise intervention, on muscle strength in prostate cancer patients receiving ADT. Additionally, quality of life, fatigue, body composition, erectile dysfunction, bone pain, physical activity level, endurance capacity, body-mass-index, waist and hip circumference and prostate-specific antigen- and testosterone levels will be assessed up to one year later. DISCUSSION: The Burgdorf study is the first study to conduct two different one-year supervised exercise interventions, and follow-up with patients for up to one year after the intervention. Results could provide important insights into the long-term effects of interventions on those parameters negatively affected by ADT, which could specify or newly establish care structures. TRIAL REGISTRATION: German Clinical Trials Register, DRKS00009975. Registered 2016-02-09, https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00009975.


Asunto(s)
Antagonistas de Andrógenos , Neoplasias de la Próstata , Antagonistas de Andrógenos/efectos adversos , Terapia por Ejercicio/métodos , Humanos , Masculino , Fuerza Muscular , Neoplasias de la Próstata/tratamiento farmacológico , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto
3.
Curr Oncol ; 27(6): e596-e606, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33380875

RESUMEN

Background: Evidence about the impact of marital status before hematopoietic cell transplantation (hct) on outcomes after hct is conflicting. Methods: We identified patients 40 years of age and older within the Center for International Blood and Marrow Transplant Research registry who underwent hct between January 2008 and December 2015. Marital status before hct was declared as one of: married or living with a partner, single (never married), separated or divorced, and widowed. We performed a multivariable analysis to determine the association of marital status with outcomes after hct. Results: We identified 10,226 allogeneic and 5714 autologous hct cases with, respectively, a median follow-up of 37 months (range: 1-102 months) and 40 months (range: 1-106 months). No association between marital status and overall survival was observed in either the allogeneic (p = 0.58) or autologous (p = 0.17) setting. However, marital status was associated with grades 2-4 acute graft-versus-host disease (gvhd), p < 0.001, and chronic gvhd, p = 0.04. The risk of grades 2-4 acute gvhd was increased in separated compared with married patients [hazard ratio (hr): 1.13; 95% confidence interval (ci): 1.03 to 1.24], and single patients had a reduced risk of grades 2-4 acute gvhd (hr: 0.87; 95% ci: 0.77 to 0.98). The risk of chronic gvhd was lower in widowed compared with married patients (hr: 0.82; 95% ci: 0.67 to 0.99). Conclusions: Overall survival after hct is not influenced by marital status, but associations were evident between marital status and grades 2-4 acute and chronic gvhd. To better appreciate the effects of marital status and social support, future research should consider using validated scales to measure social support and patient and caregiver reports of caregiver commitment, and to assess health-related quality of life together with health care utilization.


Asunto(s)
Enfermedad Injerto contra Huésped , Trasplante de Células Madre Hematopoyéticas , Enfermedad Injerto contra Huésped/epidemiología , Enfermedad Injerto contra Huésped/etiología , Humanos , Estado Civil , Calidad de Vida
4.
Ann Oncol ; 28(2): 386-392, 2017 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-28426102

RESUMEN

Background: Comprehensive studies on neutropenia and infection-related complications in patients with acute lymphoblastic leukemia (ALL) are lacking. Patients and methods: We evaluated infection-related complications that were grade ≥3 on National Cancer Institute's Common Terminology Criteria for Adverse Events (version 3.0) and their risk factors in 409 children with newly diagnosed ALL throughout the treatment period. Results: Of the 2420 infection episodes, febrile neutropenia and clinically or microbiologically documented infection were seen in 1107 and 1313 episodes, respectively. Among documented infection episodes, upper respiratory tract was the most common site (n = 389), followed by ear (n = 151), bloodstream (n = 147), and gastrointestinal tract (n = 145) infections. These episodes were more common during intensified therapy phases such as remission induction and reinduction, but respiratory and ear infections, presumably viral in origin, also occurred during continuation phases. The 3-year cumulative incidence of infection-related death was low (1.0±0.9%, n = 4), including 2 from Bacillus cereus bacteremia. There was no fungal infection-related mortality. Age 1-9.9 years at diagnosis was associated with febrile neutropenia (P = 0.002) during induction and febrile neutropenia and documented infection (both P < 0.001) during later continuation. White race was associated with documented infection (P = 0.034) during induction. Compared with low-risk patients, standard- and high-risk patients received more intensive therapy during early continuation and had higher incidences of febrile neutropenia (P < 0.001) and documented infections (P = 0.043). Furthermore, poor neutrophil surge after dexamethasone pulses during continuation, which can reflect the poor bone marrow reserve, was associated with infections (P < 0.001). Conclusions: The incidence of infection-related death was low. However, young age, white race, intensive chemotherapy, and lack of neutrophil surge after dexamethasone treatment were associated with infection-related complications. Close monitoring for prompt administration of antibiotics and modification of chemotherapy should be considered in these patients.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamiento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neutropenia Febril Inducida por Quimioterapia/mortalidad , Neutropenia Febril Inducida por Quimioterapia/terapia , Niño , Preescolar , Dexametasona/administración & dosificación , Femenino , Humanos , Lactante , Recuento de Leucocitos , Masculino , Neutrófilos/inmunología , Leucemia-Linfoma Linfoblástico de Células Precursoras/inmunología , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidad , Infecciones del Sistema Respiratorio/inducido químicamente , Infecciones del Sistema Respiratorio/mortalidad , Estudios Retrospectivos , Factores de Riesgo , Resultado del Tratamiento , Vincristina/administración & dosificación
5.
Internist (Berl) ; 58(3): 226-232, 2017 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-28108748

RESUMEN

Bleeding in the upper gastrointestinal (GI) tract is a frequent and complex emergency. There are guidelines for acute medical treatment, established endoscopic treatment as well as surgical and radiological rescue procedures. Nevertheless, the mortality of the upper GI tract bleeding is high, which is due to the fact that affected patients often have serious preexisting illnesses.


Asunto(s)
Hemorragia Gastrointestinal/terapia , Tracto Gastrointestinal Superior , Urgencias Médicas , Endoscopía Gastrointestinal , Hemorragia Gastrointestinal/mortalidad , Humanos
6.
Acta Gastroenterol Belg ; 80(1): 25-30, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29364094

RESUMEN

BACKGROUND: Leading causative factors of peptic ulcer disease (PUD) in the general population are infection with Helicobacter pylori (HP) and exposure to non-steroidal anti-inflammatory drugs (NSAID). We hypothesized that this may be different in transplant recipients given increased exposure of immunosuppressive and anti-microbial drugs. METHODS: We performed a retrospective single center analysis of all patients presenting with PUD to the endoscopy unit at a tertiary care and transplant center in Germany between 2006 and 2013. PUD was diagnosed by upper endoscopy. HP was identified by biopsy and histology. Organ transplant recipients were compared to non-transplant recipients (control group). RESULTS: 66 patients with PUD were identified in the study period. 12% (44/366) had previously received an organ transplant. 7% (3/44) of transplant recipients were found to be positive for HP compared to 25% (81/322) in the control group (p=0.007). Even when excluding patients taking proton-pump-inhibitors (PPI) from the analysis rates were similar with 30% (65/214) of the ulcers being HP positive in the control group compared to 14% (1/7) in transplant recipients (p=0.006). Furthermore, in the transplant recipient group rates of being in intensive care, concurrent PPI and concurrent antibiotic medication were significantly higher than in the control group. CONCLUSION: Organ transplant recipients with PUD have lower rates of Helicobacter pylori positivity compared to the general population.


Asunto(s)
Infecciones por Helicobacter/complicaciones , Helicobacter pylori , Trasplante de Órganos , Úlcera Péptica/microbiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Antibacterianos/uso terapéutico , Estudios de Casos y Controles , Femenino , Infecciones por Helicobacter/diagnóstico , Humanos , Masculino , Persona de Mediana Edad , Inhibidores de la Bomba de Protones/uso terapéutico , Estudios Retrospectivos , Adulto Joven
7.
Mol Psychiatry ; 22(1): 37-43, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27843153

RESUMEN

The emerging field of 'predictive analytics in mental health' has recently generated tremendous interest with the bold promise to revolutionize clinical practice in psychiatry paralleling similar developments in personalized and precision medicine. Here, we provide an overview of the key questions and challenges in the field, aiming to (1) propose general guidelines for predictive analytics projects in psychiatry, (2) provide a conceptual introduction to core aspects of predictive modeling technology, and (3) foster a broad and informed discussion involving all stakeholders including researchers, clinicians, patients, funding bodies and policymakers.


Asunto(s)
Predicción/métodos , Medicina de Precisión/psicología , Psiquiatría/métodos , Humanos , Salud Mental , Medicina de Precisión/estadística & datos numéricos , Medicina de Precisión/tendencias , Psiquiatría/estadística & datos numéricos
8.
Nanoscale ; 8(16): 8607-17, 2016 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-27049842

RESUMEN

Organic materials such as phthalocyanine-based systems present a great potential for organic device applications due to the possibility of integrating films of different organic materials to create organic heterostructures which combine the electrical capabilities of each material. This opens the possibility to precisely engineer and tune new electrical properties. In particular, similar transition metal phthalocyanines demonstrate hybridization and charge transfer properties which could lead to interesting physical phenomena. Although, when considering device dimensions, a better understanding and control of the tuning of the transport properties still remain in the focus of research. Here, by employing conductive atomic force microscopy techniques, we provide an insight about the nanoscale electrical properties and transport mechanisms of MnPc and fluorinated phthalocyanines such as F16CuPc and F16CoPc. We report a transition from typical diode-like transport mechanisms for pure MnPc thin films to space-charge-limited current transport regime (SCLC) for Pc-based heterostructures. The controlled addition of fluorinated phthalocyanine also provides highly uniform and symmetric-polarized transport characteristics with conductance enhancements up to two orders of magnitude depending on the polarization. We present a method to spatially map the mobility of the MnPc/F16CuPc structures with a nanoscale resolution and provide theoretical calculations to support our experimental findings. This well-controlled nanoscale tuning of the electrical properties for metal transition phthalocyanine junctions stands as key step for future phthalocyanine-based electronic devices, where the low dimension charge transfer, mediated by transition metal atoms could be intrinsically linked to a transfer of magnetic moment or spin.

9.
Bone Marrow Transplant ; 51(9): 1233-40, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27088381

RESUMEN

Hematopoietic cell transplantation (HCT) is a procedure that can significantly influence the socioeconomic wellbeing of patients, caregivers and their families. Among 30 allogeneic HCT recipients and their caregivers enrolled on a pilot study evaluating the feasibility of studying financial impact of HCT, 16 agreed to participate in the long-term phase, completed a baseline questionnaire and received phone interviews at 6, 12, 18 and 24 months post HCT. Analyses showed that by 2 years post HCT, 54% of patients who previously contributed to household earnings had not returned to work and 80% of patients/caregivers reported transplant as having moderate to great impact on household income. However, patients' levels of confidence in their abilities to meet household financial obligations increased from baseline to 2 years. A relatively large proportion of patients reported inability to pay for medical care through this time period. Case studies demonstrated that patients' individual perceptions of the financial impact of HCT varies considerably, regardless of actual income. We demonstrate the feasibility of conducting a study to evaluate the financial impact of allogeneic HCT through 2 years post transplantation. Some patients/caregivers continue to experience a significant long-term financial burden after this procedure. Our study lays the foundation for a larger evaluation of patient/caregiver financial burden associated with HCT.


Asunto(s)
Cuidadores/economía , Costo de Enfermedad , Trasplante de Células Madre Hematopoyéticas/economía , Empleo/economía , Salud de la Familia/economía , Humanos , Proyectos Piloto , Encuestas y Cuestionarios , Trasplante Homólogo/economía
10.
Transpl Infect Dis ; 18(3): 326-32, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26988272

RESUMEN

BACKGROUND: Hepatitis C virus (HCV) infection is associated with a particularly poor outcome after liver transplantation. In December 2014, sofosbuvir/ledipasvir (SOF/LDV) fixed-dose combination (FDC) was approved for HCV genotype 1 and 4 in Europe. In orthotopic liver transplantation (OLT) recipients, the interferon-free treatment of HCV re-infection with novel direct-acting antivirals has been demonstrated to be safe and effective in clinical trials, but real-world data are missing. The aim of this study was to investigate the safety and efficacy of SOF/LDV FDC in OLT recipients in the real-life setting. METHODS: All consecutive OLT patients started on SOF/LDV FDC for 12 or 24 weeks at the University Medical Center Hamburg-Eppendorf and Medical School Hannover between October 2014 and August 2015 were retrospectively analyzed (n = 30). The primary efficacy endpoint was sustained virological response (SVR), i.e., absence of viremia 12 weeks after end of treatment (SVR 12). Liver function tests, creatinine, blood count, and HCV RNA (by polymerase chain reaction assay) were determined at each visit. RESULTS: SVR was achieved in 29/30 patients (96.67%) treated with SOF/LDV ± ribavirin (RBV) for 12 (n = 4) or 24 weeks (n = 25). Twenty-five patients (86.2%) received RBV. However, in 15 of the 25 patients, RBV administration had to be discontinued because of severe anemia (57.7%). One RBV-treated patient died of a myocardial infarction during antiviral therapy; this event was most likely not directly related to SOF/LDV. Aside from RBV-associated anemia, no severe side effects of the antiviral regimen were observed. CONCLUSION: Antiviral treatment with SOF/LDV is highly effective, safe, and well tolerated in OLT recipients. The addition of RBV often results in severe anemia, requiring dose reduction or discontinuation.


Asunto(s)
Antivirales/farmacología , Bencimidazoles/farmacología , Fluorenos/farmacología , Hepacivirus/efectos de los fármacos , Hepatitis C/tratamiento farmacológico , Trasplante de Hígado/efectos adversos , Ribavirina/farmacología , Sofosbuvir/farmacología , Anciano , Alanina Transaminasa/metabolismo , Aspartato Aminotransferasas/metabolismo , Europa (Continente) , Femenino , Genotipo , Hepacivirus/genética , Hepatitis C/virología , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
11.
Cardiovasc Intervent Radiol ; 39(4): 547-56, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26404629

RESUMEN

PURPOSE: To analyse technical and clinical success of transjugular intrahepatic portosystemic shunt (TIPS) in patients with portal hypertension and compare a stent and a stentgraft with regard to clinical and technical outcome and associated costs. MATERIALS AND METHODS: 170 patients (56 ± 12 years, 32.9% females) treated with TIPS due to portal hypertension were reviewed. 80 patients received a stent (group 1) and 83 a stentgraft (group 2), and seven interventions were unsuccessful. Technical data, periprocedural imaging, follow-up ultrasound and clinical data were analysed with focus on technical success, patency, clinical outcome and group differences. Cost analysis was performed. RESULTS: Portal hypertension was mainly caused by ethyltoxic liver cirrhosis with ascites as dominant symptom (80%). Technical success was 93.5% with mean portosystemic gradient decrease from 16.1 ± 4.8 to 5.1 ± 2.1 mmHg. No significant differences in technical success and portosystemic gradient decrease between the groups were observed. Kaplan-Meier analysis yielded significant differences in primary patency after 14 days, 6 months and 2 years in favour of the stentgraft. Both groups showed good clinical results without significant difference in 1-year survival and hepatic encephalopathy rate. Costs to establish TIPS and to manage 2-year follow-up with constant patency and clinical success were 8876 € (group 1) and 9394 € (group 2). CONCLUSION: TIPS is a safe and effective procedure to manage portal hypertension. Stent and stentgraft enabled good technical and clinical results with a low complication rate. Primary patency rates are clearly in favour of the stentgraft, whereas the stent was more cost effective with similar clinical results in both groups.


Asunto(s)
Hipertensión Portal/cirugía , Derivación Portosistémica Intrahepática Transyugular/instrumentación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Materiales Biocompatibles , Femenino , Humanos , Masculino , Persona de Mediana Edad , Politetrafluoroetileno , Implantación de Prótesis , Estudios Retrospectivos , Stents , Resultado del Tratamiento , Adulto Joven
12.
Arch Gynecol Obstet ; 293(3): 667-73, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26449238

RESUMEN

PURPOSE: Anti-Müllerian hormone has a regulative function in the activation of folliculogenesis and an influence on atresia rate. It is considered a marker for the ovarian reserve. We know that a relationship exists between AMH levels and oocyte retrieval numbers, antral follicle count, pregnancy rates and birth rates. The role of AMH as an efficient prognostic factor in determining the probability of pregnancy has been largely discussed in the literature. The aim of this study is to determine the role age and AMH levels play in success rates of IVF/ICSI therapies. To date, the sample group we examined was one of the biggest ever included in a single study of the subject. METHODS: All patients who underwent an IVF/ICSI treatment with FSH stimulation in the Wiesbaden Kinderwunschzentrum between 2003 and 2010, were no older than 44 years old, and had an evaluation of serum AMH levels before treatment were included in this study. In total, 1287 patients were analysed retrospectively. Statistical analysis was performed with SPSS. RESULTS: Females' mean age was 34.89, ranging from 21 to 44 years. The patients underwent between 1 and 11 IVF cycles. Younger women had significantly higher AMH levels (p = 0.001). Patients with higher AMH levels had significantly lower break-off rates (p < 0.0005) and a significantly higher number of oocytes retrieved (p < 0.0005). Higher levels of AMH corresponded to higher pregnancy rates (p = 0.017). AMH levels do not influence pregnancy rates in younger patients (<36 years). CONCLUSIONS: AMH is a useful parameter that should be measured before performing an IVF/ICSI treatment. In younger patients, AMH levels do not predict pregnancy outcomes. In patients older than 36 years, AMH can be used as a prognostic factor. Even when a woman's AMH levels are too low to be detected, she still an acceptable chance of becoming pregnant.


Asunto(s)
Hormona Antimülleriana/sangre , Biomarcadores/sangre , Fertilización In Vitro , Recuperación del Oocito , Inducción de la Ovulación/métodos , Inyecciones de Esperma Intracitoplasmáticas/métodos , Adulto , Femenino , Humanos , Oocitos , Folículo Ovárico , Reserva Ovárica , Embarazo , Resultado del Embarazo , Índice de Embarazo , Estudios Retrospectivos
14.
J Chem Phys ; 143(22): 224104, 2015 Dec 14.
Artículo en Inglés | MEDLINE | ID: mdl-26671355

RESUMEN

The correction of the self-interaction error that is inherent to all standard density functional theory calculations is an object of increasing interest. In this article, we apply the very recently developed Fermi-orbital based approach for the self-interaction correction [M. R. Pederson et al., J. Chem. Phys. 140, 121103 (2014) and M. R. Pederson, J. Chem. Phys. 142, 064112 (2015)] to a set of different molecular systems. Our study covers systems ranging from simple diatomic to large organic molecules. We focus our analysis on the direct estimation of the ionization potential from orbital eigenvalues. Further, we show that the Fermi orbital positions in structurally similar molecules appear to be transferable.

15.
Eur Phys J C Part Fields ; 75(9): 424, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26543403

RESUMEN

Reaching a theoretical accuracy in the prediction of the lightest MSSM Higgs-boson mass, [Formula: see text], at the level of the current experimental precision requires the inclusion of momentum-dependent contributions at the two-loop level. Recently two groups presented the two-loop QCD momentum-dependent corrections to [Formula: see text] (Borowka et al., Eur Phys J C 74(8):2994, 2014; Degrassi et al., Eur Phys J C 75(2):61, 2015), using a hybrid on-shell-[Formula: see text] scheme, with apparently different results. We show that the differences can be traced back to a different renormalization of the top-quark mass, and that the claim in Ref. Degrassi et al. (Eur Phys J C 75(2):61, 2015) of an inconsistency in Ref. Borowka et al. (Eur Phys J C 74(8):2994, 2014) is incorrect. We furthermore compare consistently the results for [Formula: see text] obtained with the top-quark mass renormalized on-shell and [Formula: see text]. The latter calculation has been added to the FeynHiggs package and can be used to estimate missing higher-order corrections beyond the two-loop level.

17.
Parasitology ; 142(8): 1033-43, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25800822

RESUMEN

The impact of haematozoan infection on host fitness has received substantial attention since Hamilton and Zuk posited that parasites are important drivers of sexual selection. However, short-term studies testing the assumption that these parasites consistently reduce host fitness in the wild have produced contradictory results. To address this complex issue, we conducted a long-term study examining the relationship between naturally occurring infection with Haemoproteus and Plasmodium, and lifetime reproductive success and survival of Mountain White-crowned Sparrows. Specifically, we tested the hypothesis that birds infected with haematozoan parasites have reduced survival (as determined by overwinter return rates) and reproductive success. Contrary to expectation, there was no relationship between Haemoproteus and Plasmodium infection and reproduction or survival in males, nor was there a relationship between Plasmodium infection and reproduction in females. Interestingly, Haemoproteus-infected females had significantly higher overwinter return rates and these females fledged more than twice as many chicks during their lifetimes as did uninfected females. We discuss the impact of parasitic infections on host fitness in light of these findings and suggest that, in the case of less virulent pathogens, investment in excessive immune defence may decrease lifetime reproduction.


Asunto(s)
Enfermedades de las Aves/parasitología , Haemosporida/parasitología , Interacciones Huésped-Parásitos , Malaria Aviar/parasitología , Reproducción , Gorriones/parasitología , Animales , Femenino , Haemosporida/fisiología , Masculino , Plasmodium/parasitología , Plasmodium/fisiología
18.
Chem Commun (Camb) ; 50(65): 9060-3, 2014 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-24819240

RESUMEN

The kind of surface MoOX structures on Al2O3-SiO2 was found to determine propene selectivity in the metathesis of ethylene and 2-butene. Compared to isolated tetrahedral MoOX species, their polymerized octahedral counterparts show significantly lower activity for isomerisation of 2- to 1-butene thus hindering non-selective metathesis of these butenes. In addition, they reveal higher ability to engage ethylene in propene formation.

19.
Phys Rev Lett ; 112(14): 141801, 2014 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-24765944

RESUMEN

For the interpretation of the signal discovered in the Higgs searches at the LHC it will be crucial in particular to discriminate between the minimal Higgs sector realized in the standard model (SM) and its most commonly studied extension, the minimal supersymmetric standard model (MSSM). The measured mass value, having already reached the level of a precision observable with an experimental accuracy of about 500 MeV, plays an important role in this context. In the MSSM the mass of the light CP-even Higgs boson, Mh, can directly be predicted from the other parameters of the model. The accuracy of this prediction should at least match the one of the experimental result. The relatively high mass value of about 126 GeV has led to many investigations where the scalar top quarks are in the multi-TeV range. We improve the prediction for Mh in the MSSM by combining the existing fixed-order result, comprising the full one-loop and leading and subleading two-loop corrections, with a resummation of the leading and subleading logarithmic contributions from the scalar top sector to all orders. In this way for the first time a high-precision prediction for the mass of the light CP-even Higgs boson in the MSSM is possible all the way up to the multi-TeV region of the relevant supersymmetric particles. The results are included in the code FEYNHIGGS.

20.
J Viral Hepat ; 21(11): 769-79, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24251818

RESUMEN

HCV RNA levels correlate with the long-term outcome of hepatitis C in liver transplant recipients. Nucleic acid testing (NAT) is usually used to confirm HCV reinfection and to examine viral loads after liver transplantation. HCV core antigen (HCVcoreAg) testing could be an alternative to NAT with some potential advantages including very low intra- and interassay variabilities and lower costs. The performance of HCVcoreAg testing in organ transplant recipients is unknown. We prospectively studied 1011 sera for HCV RNA and HCVcoreAg in a routine real-world setting including 222 samples obtained from patients after liver or kidney transplantation. HCV RNA and HCVcoreAg test results showed a consistency of 98% with a very good correlation in transplanted patients (r > 0.85). The correlation between HCV RNA and HCVcoreAg was higher in sera with high viral loads and in samples from patients with low biochemical disease. Patients treated with tacrolimus showed a better correlation between both parameters than individuals receiving cyclosporine A. HCV RNA/HCVcoreAg ratios did not differ between transplanted and nontransplanted patients, and HCV RNA and HCVcoreAg kinetics were almost identical during the first days after liver transplantation. HCVcoreAg testing can be used to monitor HCV viral loads in patients after organ transplantation. However, the assay is not recommended to monitor antiviral therapies.


Asunto(s)
Hepatitis C/diagnóstico , Receptores de Trasplantes , Proteínas del Núcleo Viral/sangre , Carga Viral/métodos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Inmunoensayo/métodos , Trasplante de Riñón , Trasplante de Hígado , Masculino , Persona de Mediana Edad , Estudios Prospectivos , ARN Viral/sangre , Adulto Joven
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