233 research outputs found

    Prostasome-like particles in stallion semen.

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    Human semen contains membranous vesicles called prosta- somes. They are secreted by the prostate gland and contain large amounts of cholesterol, sphingomyelin, and Ca2. Prostasomes enhance the motility of ejaculated spermatozoa and are in- volved in a number of additional biological functions. No prostasome-like vesicles have been described in horse se- men up to now. We have demonstrated the presence of pros- tasome-like vesicles in the equine semen and characterized them as to size, morphology, and lipid composition; we have found that they are similar to human prostasomes in many re- spects. We propose that these vesicles might be important for the fecundity of horse semen. This is of interest since the success of artificial insemination is limited by the fact that stallion sperm barely survive cryopreservation

    Environmental and Economic Analysis of an Anaerobic Co-Digestion Power Plant Integrated with a Compost Plant

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    Italian power generation through anaerobic digestion (AD) has grown significantly between 2009 and 2016, becoming an important renewable energy resource for the country, also thanks to the generous incentives for produced electricity available in the last years. This work focuses on the economic and environmental issues of AD technology and proposes a technoeconomic analysis of investment profitability without government support. In particular, the analysis focuses on an AD power plant fed by zootechnical wastewater and agro-industrial residues coupled to a cogeneration (CHP) system and a digestate-composting plant that produces soil fertilizers. We aim to determine the economic profitability of such AD power plants fed by innerfarm biomass wastes, exploiting digestate as fertilizer, using the cogenerated heat and taking into account the externalities (environmental benefits). Environmental analysis was carried out via a life cycle analysis (LCA), and encompassing the production of biogas, heat/electricity and compost in the downstream process. The un-released environmental emissions were converted into economic benefits by means of a stepwise approach. The results indicate that integrating a compost plant with a biogas plant can significantly increase the carbon credits of the process. The results were evaluated by means of a sensitivity analysis, and they report an IRR in the range of 6%–9% according to the Italian legislative support mechanisms, and possibilities to increase revenues with the use of digestate as fertilizer. The results significantly improve when externalities are included

    Negative pressure wound therapy versus healing by secondary intention in pressure ulcers

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    Pressure ulcers are a highly prevalent source of morbidity with an equally high incidence of up to 38.0\% amongst different categories of healthcare institutions. Therefore, the management and therapeutic approach toward these often hospital- or facility-acquired problems remain critical aspects of long-term care. Negative pressure wound therapy (NPWT) has proven effective in addressing the barriers to pressure ulcer healing including increasing blood flow to previously ischemic wound areas by generating subatmospheric pressure which vacuums in circulation. The objective of this study was to compare negative pressure wound therapy (NPWT) versus surgical wounds healing by secondary intention (SWHSI). A systematic literature search was conducted using the PubMed and Scopus search engine up until the 20 Th January 2017 including the terms: "negative pressure wound therapy" and "pressure ulcers". In this systematic review, six randomized controlled trials were included. NPWT is deemed appropriate and effective method and widely used by clinicians to promote the healing of wounds and ulcers of different etiology. The heterogeneity found in individual trials regarding the inclusion criteria, therapeutic procedures, the criteria and methods of outcome evaluation, however, did not allow for a data evaluation with statistically valid conclusions. It is reasonable to assume that their subset of patients with pressure ulcers that can be effectively treated with NPWT, with optimal results and good cost-benefit ratio, also with respect to the quality of life

    SmartORC: smart orchestration of resources in the compute continuum

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    The promise of the compute continuum is to present applications with a flexible and transparent view of the resources in the Internet of Things–Edge–Cloud ecosystem. However, such a promise requires tackling complex challenges to maximize the benefits of both the cloud and the edge. Challenges include managing a highly distributed platform, matching services and resources, harnessing resource heterogeneity, and adapting the deployment of services to the changes in resources and applications. In this study, we present SmartORC, a comprehensive set of components designed to provide a complete framework for managing resources and applications in the Compute Continuum. Along with the description of all the SmartORC subcomponents, we have also provided the results of an evaluation aimed at showcasing the framework's capability

    The Multifaceted Role of Growth Differentiation Factor 15 (GDF15): A Narrative Review from Cancer Cachexia to Target Therapy

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    Background: Growth Differentiation Factor 15 (GDF15) has emerged as a key biomarker and therapeutic target in oncology, with roles extending beyond cancer cachexia. Elevated GDF15 levels correlate with poor prognosis across several solid tumors, including colorectal, gastric, pancreatic, breast, lung, prostate, and head and neck cancers. GDF15 modulates tumor progression through PI3K/AKT, MAPK/ERK, and SMAD2/3 signaling, thereby promoting epithelial-to-mesenchymal transition, metastasis, immune evasion, and chemoresistance via Nrf2 stabilization and oxidative stress regulation. Methods: We performed a narrative review of the literature focusing on the role of GDF15 in solid tumors, with a particular emphasis on head and neck cancers. Results: In head and neck squamous cell carcinoma (HNSCC), GDF15 overexpression is linked to aggressive phenotypes, radioresistance, poor response to induction chemotherapy, and failure of immune checkpoint inhibitors (ICIs). Similar associations are observed in colorectal, pancreatic, and prostate cancer, where GDF15 contributes to metastasis and therapy resistance. Targeting the GDF15-GFRAL axis appears therapeutically promising: the monoclonal antibody ponsegromab improved cachexia-related outcomes in the PROACC-1 trial, while visugromab combined with nivolumab enhanced immune response in ICI-refractory tumors. Conclusions: Further investigation is warranted to delineate the role of GDF15 across malignancies, refine patient selection, and evaluate combinatorial approaches with existing treatments

    Duration of Disease and Long‐Term Outcomes in Patients With Difficult‐To‐Treat Recurrent Pericarditis: A Chronic Condition Treated With Nonsteroidal Anti‐Inflammatory Drugs, Colchicine, Corticosteroids, and Anti–Interleukin‐1 Agents

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    Objective: We aimed to investigate the remission rate and disease duration in idiopathic or post–cardiac injury pericarditis and risk factors for disease duration and anti–interleukin-1 (IL-1) agent discontinuation. Methods: This was a multicenter, longitudinal, observational study including 370 patients (51.4% female). The remission rate was the proportion of patients who stopped all pericarditis-related therapies for at least 6 months without recurrences. Results: The median follow-up was 4.9 (interquartile range [IQR] 2.8–8.4) years, and the median age at the end of follow-up was 49 (IQR 37–60) years. A median of 1.1 (IQR 0.6–1.9) recurrences/year and 0.4 (IQR 0.1–0.9) hospitalizations/year were recorded. The remission rate at follow-up was 34.0%, 7% per year. Disease duration was shorter for patients in remission (3.1 years, IQR 1.6–6.2 years) than for those still receiving treatment (4 years, IQR 2.2–7.8; P = 0.02). Use of “guidelines-based therapy” (hazard ratio [HR] 1.85, 95% confidence interval [CI] 1.25–2.73; P = 0.02) and colchicine use at first attack (HR 1.51, 95% CI 1.02–2.23; P = 0.038) were protective factors, whereas steroid use was associated with longer disease duration (HR 0.53, 95% CI 0.35–0.81; P = 0.003). Corticosteroids were used in 77.3% of patients, with a median duration of therapy of 1.1 (IQR 0.4–2.6) years. Anakinra was used in 25.9% with a median duration of therapy of 2.4 (IQR 0.9–5.0) years; only 19.8% were able to stop anakinra at the end of observation period. Conclusion: This study reports the largest and longest follow-up in patients with recurrent pericarditis. Guideline adherence from the first attack is associated with a shorter course. The disease was long and impacting in terms of recurrences and hospitalizations, often requiring a long-term treatment, in particular with anti–IL-1 agents
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