199 research outputs found

    Химиотерапия взрослых больных с саркомами мягких тканей

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    В обзоре рассмотрены общие принципы цитостатического лечения взрослых больных с саркомами мягких тканей. Роль химиотерапии при этом заболевании на протяжении последних лет повышается. Hаиболее эффективными цитостатиками являются доксорубицин и ифосфамид, причем у обоих препаратов установлена зависимость эффективности от дозы. Химиотерапию применяют как элемент радикального комбинированного лечения, а также как паллиативный метод при метастатическом процессе. При рабдомиосаркоме химиотерапия эффективна практически при любой стадии заболевания.Chemotherapy has an increasing role in the therapy of soft tissue sarcomas. Meanwhile, chemotherapy of these tumors is frequently considered in general without taking into account the peculiar clinical features of various subtypes. Doxorubicin and ifosfamide are the most active drugs in the treatment of soft tissue sarcomas. Chemotherapy could be used both for radical and for palliative treatment. For rhabdomyosarcoma, chemotherapy is effective in all the stages of such disease

    Involving adolescents and young adults (AYA) with an uncertain or poor cancer prognosis as research partners

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    BackgroundThe interest in patient involvement is increasing in health research, however, is not yet well described in adolescents and young adults (AYA) with palliative cancer, such as AYAs with an uncertain and/or poor cancer prognosis (UPCP). This study aimed to document the process of involving AYAs with a UPCP as partners in research including their experiences, the impact, and our lessons learned.Materials and MethodsAYAs with a UPCP were recruited via healthcare professionals and patients to involve as research partners in the qualitative interview study. To define their role and tasks in each research phase we used the participation matrix.ResultsIn total six AYAs with a UPCP were involved as research partners and five as co-thinkers. They were involved in initiating topics, developing study design, interviewing, analyzing data, and dissemination of information. Together with the researcher, they co-produced the information letters and interview guides and implemented aftercare and extra support. The research partners ensured that the data was relevant, correctly interpreted and that results were translated to peers and clinical practice. AYAs themselves felt useful, found people who understand their challenges, and were able to create a legacy.ConclusionThe benefits of involving AYAs with a UPCP as research partners cannot be stressed enough, both for the study as well as for the AYAs themselves, but there are challenges. Researchers should anticipate and address those challenges during the planning phase of the study. This article provides practical tips on how to do so

    Sound Frequency and Aural Selectivity in Sound-Contingent Visual Motion Aftereffect

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    BACKGROUND: One possible strategy to evaluate whether signals in different modalities originate from a common external event or object is to form associations between inputs from different senses. This strategy would be quite effective because signals in different modalities from a common external event would then be aligned spatially and temporally. Indeed, it has been demonstrated that after adaptation to visual apparent motion paired with alternating auditory tones, the tones begin to trigger illusory motion perception to a static visual stimulus, where the perceived direction of visual lateral motion depends on the order in which the tones are replayed. The mechanisms underlying this phenomenon remain unclear. One important approach to understanding the mechanisms is to examine whether the effect has some selectivity in auditory processing. However, it has not yet been determined whether this aftereffect can be transferred across sound frequencies and between ears. METHODOLOGY/PRINCIPAL FINDINGS: Two circles placed side by side were presented in alternation, producing apparent motion perception, and each onset was accompanied by a tone burst of a specific and unique frequency. After exposure to this visual apparent motion with tones for a few minutes, the tones became drivers for illusory motion perception. However, the aftereffect was observed only when the adapter and test tones were presented at the same frequency and to the same ear. CONCLUSIONS/SIGNIFICANCE: These findings suggest that the auditory processing underlying the establishment of novel audiovisual associations is selective, potentially but not necessarily indicating that this processing occurs at an early stage

    Combination antiretroviral therapy and the risk of myocardial infarction

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    Exposure to delayed visual feedback of the hand changes motor-sensory synchrony perception

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    We examined whether the brain can adapt to temporal delays between a self-initiated action and the naturalistic visual feedback of that action. During an exposure phase, participants tapped with their index finger while seeing their own hand in real time (~0 ms delay) or delayed at 40, 80, or 120 ms. Following exposure, participants were tested with a simultaneity judgment (SJ) task in which they judged whether the video of their hand was synchronous or asynchronous with respect to their finger taps. The locations of the seen and the real hand were either different (Experiment 1) or aligned (Experiment 2). In both cases, the point of subjective simultaneity (PSS) was uniformly shifted in the direction of the exposure lags while sensitivity to visual-motor asynchrony decreased with longer exposure delays. These findings demonstrate that the brain is quite flexible in adjusting the timing relation between a motor action and the otherwise naturalistic visual feedback that this action engenders

    Gender differences in the use of cardiovascular interventions in HIV-positive persons; the D:A:D Study

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    Two Conceptions of Democracy in the Council of the EU: Narrow and Broad

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    Since the entry into force of the Lisbon Treaty, the Council is explicitly understood as a democratic actor in a decision-making system that is legitimated on the basis of a democratic rationale. While this formalisation in the Lisbon Treaty of the Council as a democratic actor is to be welcomed as an important step in a longer-standing process, it remains unclear which normative requirements result from it. This point is illustrated in this paper with reference to the principle of transparency. It discerns the role of transparency in two competing conceptions at the Council level, representing a narrow, and a broad perspective on democracy. It is argued that below a minimal threshold of transparency, Council democracy cannot function. Above this threshold, in turn, transparency is likely to make Council democracy function better

    Has the Rate of CD4 Cell Count Decline before Initiation of Antiretroviral Therapy Changed over the Course of the Dutch HIV Epidemic among MSM?

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    Introduction:Studies suggest that the HIV-1 epidemic in the Netherlands may have become more virulent, leading to faster disease progression if untreated. Analysis of CD4 cell count decline before antiretroviral therapy (ART) initiation, a surrogate marker for disease progression, may be hampered by informative censoring as ART initiation is more likely with a steeper CD4 cell count decline.Methods:Development of CD4 cell count from 9 to 48 months after seroconversion was analyzed using a mixed-effects model and 2 models that jointly modeled CD4 cell counts and time to censoring event (start ART
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