375 research outputs found

    Leaderless, mutualistic, and organic agricultural co-production as a socially-ecologically sustainable rural-urban practice. A local Italian experience, an international perspective to rethink the territory and the city

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    In an expanding world demanding more and more resources and causing interconnected crisis, the systemic nature of tragic social and ecological incidents is not (yet) widely acknowledged. The social and ecological limits of the current industry-based economic paradigm let us forerun the onset of possible emergencies to be possibly tackled through preventive design and positive transformation, where the rethinking of the territory, the city, and their supporting environments is necessarily involved. In this perspective, nurturing initiatives to ensure distributed food provision seems a good start in such a transformation, at least as a socio-economic sustainability tool and as a satisfier of basic human needs. We present an example of communal self-management for organic agricultural production, inspired to the model of Community-Supported Agriculture (CSA). This project was started in the urban sprawl of massively industrialised North-Eastern Italy by committed individuals and grassroot groups, already active in discourses on ecological sustainability, social equity, social and solidarity economy, transition and post-growth. From individual-to-collective self-determination and bottom-up initiative potentials through food plans and other tools to be participatorily defined with all the actors of a given area, a CSA can represent the trigger of a virtuous paradigmatic shift in more or less institutional policies for the maintenance, regeneration, and strengthening of territory and urban environments

    Synthesis of zwitterionic-functionalized conjugated nanoparticles for targeted drug delivery applications

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    Polymeric Nanoparticles (NPs) represent a promising pharmacological tool, since their structure can be modiïŹed to obtain: i) encapsulation and controlled release of a wide range of active compounds, ranging from small molecules to siRNA or oligonucleotides; ii) selective cell targeting, thus allowing precise drug delivery to the desired site of action. A powerful strategy to achieve selectivity of uptake in specific cell types is to conjugate the nanoparticles to a ligand specific for receptors expressed by the target cell type. This offers the advantage of a potentially improved drug efficacy with limited side effects and toxicity. Polymeric nanoparticles in a range of 20–100 nm have a high potential for in vivo applications, due to their ability to circulate in the blood for a long period of time. In fact, this size range allows to avoid renal and lymphatic clearance, to prevent opsonization and at the same time improves the internalization by cells. In this work we address the synthesis by reversible addition-fragmentation chain transfer (RAFT) of biodegradable, zwitterionic-based nanoparticles. This Zwitterionic nanoparticles act as super non-fouling surfaces that prevent protein adsorption from complex biological media. The nanoparticles were functionalized with different numbers of selective ligands through click chemistry; different dimensions were synthetized changing the length of the hydrophobic part. In vitro studies were performed to evaluate the uptake of functionalized nanoparticles

    Clinical and metabolic effects of first-line treatment with somatostatin analogues or surgery in acromegaly: a retrospective and comparative study

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    To evaluate the metabolic effects of first-line somatostatin analogues or surgery in acromegaly. Retrospective, comparative, 12-month follow-up. Two hundred and thirty one patients (123 men, age 47.32 ± 14.63 years) with active acromegaly, first line treatments were somatostatin analogues in 151 (65.4%) and surgery in 80 (34.6%). Metabolic syndrome (MS) parameters, glucose, insulin and GH during oral glucose tolerance test, stimulated insulin sensitivity by insulin sensitivity index (ISI Matsuda), early and total insulin-secretion rate by insulinogenic index and AUC(INS), visceral adiposity function, expressed by visceral adipose index (VAI). Somatostatin analogues treatment improved all MS parameters and significantly reduced fasting glucose (P < 0.001), HbA1c (P = 0.014) and the prevalence of DM (P = 0.003) when disease control was achieved. Both somatostatin analogues and surgery improved ISI Matsuda (P < 0.001) and reduced AUC(INS) (P < 0.001) and VAI (P < 0.001 and P = 0.003, respectively). Only in controlled somatostatin analogues-treated patients a significant reduction in insulinogenic index (P = 0.010) was observed. ISI Matsuda showed a significant independent correlation with IGF-1 levels (ÎČ = -0.258; P = 0.001) and VAI score (ÎČ = -0.430; P < 0.001). VAI was independently correlated with IGF-1 (ÎČ = 0.183; P = 0.004). Both somatostatin analogues and surgery can safely be used as first-line therapy in acromegaly, without any untoward effects on glucose tolerance. The control of acromegaly is the main determinant of beneficial effects on general features of insulin sensitivity. VAI could represent an additional link between disease control and insulin sensitivity

    Endoscopic Ultrasound Guided Biliary Drainage in Malignant Distal Biliary Obstruction

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    Malignant biliary obstruction (MBO) is a challenging medical problem that often negatively impacts the patient’s quality of life (QoL), postoperative complications, and survival rates. Endoscopic approaches to biliary drainage are generally performed by ERCP or, in selected cases, with a percutaneous transhepatic biliary drainage (PTBD). Recent advances in therapeutic endoscopic ultrasound (EUS) allow drainage where previous methods have failed. EUS has evolved from a purely diagnostic technique to one that allows a therapeutic approach in the event of ERCP failure in distal MBO. Moreover, the introduction of dedicated accessories and prostheses for EUS-guided transmural biliary drainage (EUS-BD) made these procedures more successful with regard to technical success, clinical outcomes and reduction of adverse events (AEs). Finally, lumen-apposing metal stents (LAMS) have improved the therapeutic role of the EUS. Subsequently, the electrocautery enhanced tip of the LAMS (EC-LAMS) allows a direct access of the delivery system to the target lumen, thereby simplifying and reducing the EUS-BD procedure time. EUS-BD using LAMS and EC-LAMS has proven effective and safe with a low rate of AEs. This review aims to evaluate biliary drainage techniques in malignant obstruction, focusing on the role of EUS biliary drainage by LAMS

    A Feasibility Study Investigating an Exercise Program in Metastatic Cancer Based on the Patient-Preferred Delivery Mode

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    Background: Feasibility of exercise in patients with metastatic cancer is still a challenge. This study aimed to determine the feasibility and preliminary efficacy of an exercise intervention based on a patient-preferred delivery mode in patients affected by metastatic cancer. Materials and methods: Forty-four patients with a confirmed diagnosis of metastatic cancer were recruited in a 3-month exercise program. Whereas the exercise program consisted of aerobic and resistance activities performed twice a week, the participants may choose the mode of delivery: home based, personal training, or group based. The primary endpoint was the feasibility, defined by recruitment rate, attendance, adherence, dropout rate, tolerability (comparing the session RPE with the target RPE), and safety (using the Common Terminology Criteria for Adverse Events, version 5.0). Secondary endpoints included cardiorespiratory fitness (six minutes walking test), muscle strength (handgrip strength test and isometric leg press test), flexibility (the back scratch and chair sit and reach tests), anthropometric parameters (body mass index and waist-hip ratio), quality of life (EORTC QLQ C-30 questionnaire), and amount of physical exercise (Godin's Shepard Leisure Time Exercise Questionnaire). Descriptive statistics, Student t test, and Wilcoxon signed rank test were used to analyze data. Results: The study recruitment rate was 81%. Out of 44 recruited patients, 28 chose the personal training program, 16 chose the home-based program, and none chose the group-based program. Nine dropouts occurred (20%), 6 in the personal training program, and 3 in the home-based intervention. The median attendance rate was 92%, adherence was 88%, tolerability was 100%, and 9 nonsevere adverse events were registered during the exercise sessions. An increase in cardiorespiratory fitness (P &lt; .001) and flexibility (P = .011 for chair sit and reach; P = .040 for back scratch) was observed at the end of the intervention, while no changes in anthropometric values and muscle strength were detected. Different quality-of-life domains were improved following the intervention, including physical (P = .002), emotional (P &lt; .001), and role functioning (P = .018), fatigue (P = .030), and appetite loss (P = .005). Conclusion: A 3-month exercise program based on a patient-preferred delivery mode is feasible in patients with metastatic cancer and may improve physical function and quality of life. Trial registration: NCT04226508

    A pharmacoeconomic analysis from Italian guidelines for the management of prolactinomas

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    Background: Prolactinoma, the most common pituitary adenoma, is usually treated with dopamine agonist (DA) therapy like cabergoline. Surgery is second-line therapy, and radiotherapy is used if surgical treatment fails or in relapsing macroprolactinoma. Objective: This study aimed to provide economic evidence for the management of prolactinoma in Italy, using a cost-of-illness and cost-utility analysis that considered various treatment options, including cabergoline, bromocriptine, temozolomide, radiation therapy, and surgical strategies. Methods: The researchers conducted a systematic literature review for each research question on scientific data- bases and surveyed a panel of experts for each therapeutic procedure's specific drivers that contributed to its total cost. Results: The average cost of the first year of treatment was euro2,558.91 and euro3,287.40 for subjects with micro- prolactinoma and macroprolactinoma, respectively. Follow-up costs from the second to the fifth year after ini- tial treatment were euro798.13 and euro1,084.59 per year in both groups. Cabergoline had an adequate cost-utility profile, with an incremental cost-effectiveness ratio (ICER) of euro3,201.15 compared to bromocriptine, based on a willingness-to-pay of euro40,000 per quality-adjusted life year (QALY) in the reference economy. Endoscopic sur- gery was more cost-effective than cabergoline, with an ICER of euro44,846.64. Considering a willingness-to-pay of euro40,000/QALY, the baseline findings show cabergoline to have high cost utility and endoscopic surgery just a tad above that. Conclusions: Due to the favorable cost-utility profile and safety of surgical treatment, pituitary surgery should be considered more frequently as the initial therapeutic approach. This management choice could lead to better outcomes and an appropriate allocation of healthcare resources
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