191 research outputs found

    VALUTAZIONE DELLA PRESENZA DI POTENZIALI MARCATORI IN FLUIDI BIOLOGICI DI PAZIENTI AFFETTI DA MESOTELIOMA PLEURICO MALIGNO

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    Il mesotelioma pleurico maligno è un tumore aggressivo la cui prognosi, nella maggior parte dei casi, è infausta. Il ruolo che assume la diagnosi precoce è quindi fondamentale, poiché trattamenti chirurgici e farmacologici, in fase avanzata del tumore, non hanno dimostrato un prolungamento significativo della sopravvivenza. Affinchè si possano sviluppare nuove tecniche di diagnosi precoce è necessario avere a disposizione una vasta gamma di marcatori tumorali più selettivi e specifici. Studi effettuati con tecniche di proteomica su campioni bioptici randomizzati di pazienti con Mesotelioma Pleurico maligno, tumori polmonari benigni e carcinoma polmonare, all’interno del Dipartimento di Farmacia dell’Università di Pisa hanno aperto le porte per considerare nuove proteine come potenziali marcatori biologici per la differenziazione del MPM. Le proteine che hanno suscitato maggiore interesse sono: vimentina, desmina e prelamin A/C. La validazione in larga scala di queste proteine è stata effettuata su campioni di siero e plasma, in fase di diagnosi e in fase di terapia, utilizzando la tecnica del kit ELISA. La vimentina dimostra di essere differenzialmente espressa nei campioni di diagnosi quindi risulta essere un buon marcatore specifico e sensibile; minore sensibilità invece è dimostrata dalla desmina e prelamin A/C

    Airborne cultivable microflora and microbial transfer in farm buildings and rural dwellings

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    Exposure to environments rich in microorganisms such as farms has been shown to protect against the development of childhood asthma and allergies. However, it remains unclear where, and how, farm and other rural children are exposed to microbes. Furthermore, the composition of the microbial flora is poorly characterised. We tested the hypothesis that farm children are exposed indoors to substantial levels of viable microbes originating from animal sheds and barns. We also expected that environmental microbial flora on farms and in farm homes would be more complex than in the homes of rural control children

    Сутність адміністративного права за новою класифікацією юриспруденції

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    На основі новітніх підходів до розумінні завдань, об’єктів і класифікації юридичних наук запропонована перспектива розвитку адміністративного права і процесу, які повинні трансформуватися в нові юридичні науки: базисноантиделыктне «Адміністра­тивне право України», процедурне «Админо­регламентное право України» та у низку регулятивних юридичних наук, а також розробити Адміністративний кодекс України, Адміно-регламентній кодекс України, відповідні регулятивні кодекси.На основе новейших подходов к понимании задач, объектов и классификации юридических наук предложена перспектива развития административного права и процес­са, которые должны трансформироваться в новые юридические науки: базисноанти­деликтное «Административное право Украины», процедурное «Админо­регламентное право Украины» и ряд регулятивных юридических наук, а также разработать Административный кодекс Украины, Админо-регламентный кодекс Украины, соответствую­щие регулятивные кодексы.On the basis of the newest fittings to for understanding of tasks, objects and classification of legal sciences the prospect of development of administrative law and process is offered, which must be transformed in new legal sciences: basisuntidelictical the «Administrative law of Ukraine», procedural «Administrative-reglamental law of Ukraine» and the row of regulative legal sciences, and also to develop the Administrative code of Ukraine, Administrative­-reglamental code of Ukraine, proper regulative codes

    Некоторые подходы к совершенствованию регионально-институциональной основы курортно-гостиничных услуг в Автономной республике Крым

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    Рассмотрены подходы (институциональный, региональный, проблемно-ориентированный и маркетинговый) к разработке регионально-институциональной модели курортно-гостиничного хозяйства как одной из важнейших составляющих институциональной модели курортно-рекреационного комплекса Автономной Республики Крым.Розглядаються підходи (інституційний, регіональний, проблемно-орієнтований і маркетинговий) до розробки регіонально-інституційної моделі курортно-готельного господарства як однієї з найважливіших складових інституційної моделі курортно-рекреаційного комплексу Автономної Республіки Крим

    Влияние лечения тиотриазолином на состояние перекисного окисления липидов и уровни иммуновоспалительных и вазоактивных эндотелиальных факторов у больных с хронической сердечной недостаточностью и helicobacter pylori-негативными гастропатиями

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    Показано, что включение в схему патогенетического лечения больных с ХСН, hp-негативной гастропатией и умеренным или высоким риском сердечно-сосудистых осложнений (ССО) антиоксиданта тиотриазолина сопровождается достоверно более выраженными позитивными эффектами на процессы перекисного окисления липидов и содержание в крови иммуновоспалительных и вазоактивных эндотелиальных факторов по сравнению с динамикой при лечении без использования тиотриазолина, причем степень положительной динамики у больных с высоким риском ССО достоверно больше.Показано, що включення у схему патогенетичного лікування хворих із ХСН, hр-негативною гастропатією і з помірним або високим ризиком серцево-судинних ускладнень (ССУ) антиоксиданта тіотриазоліна супроводжується достовірно більш вираженими позитивними ефектами на процеси перекисного окислення ліпідів та вміст у крові імунозапальних і вазоактивних ендотеліальних факторів порівняно з динамікою при лікуванні без використання тіотриазоліну, причому ступінь позитивної динаміки у хворих із високим ризиком ССУ достовірно більший.It is shown that the use of tiotriazolin in the scheme of pathogenetic treatment of patients with chronic heart failure, Hp-negative gastropathy, and moderate or high risk of cardiovascular complications (CVC) is accompanied by significantly higher positive effect on the processes of lipid peroxidation and the amount of immune inflammation and vasoactive endothelial factors in the blood when compared with the dynamics at treatment without the use of tiotriazolin, the degree of positive dynamics in patients with a high risk of CVC being significantly higher

    A perspective on the developmental toxicity of inhaled nanoparticles.

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    This paper aimed to clarify whether maternal inhalation of engineered nanoparticles (NP) may constitute a hazard to pregnancy and fetal development, primarily based on experimental animal studies of NP and air pollution particles. Overall, it is plausible that NP may translocate from the respiratory tract to the placenta and fetus, but also that adverse effects may occur secondarily to maternal inflammatory responses. The limited database describes several organ systems in the offspring to be potentially sensitive to maternal inhalation of particles, but large uncertainties exist about the implications for embryo–fetal development and health later in life. Clearly, the potential for hazard remains to be characterized. Considering the increased production and application of nanomaterials and related consumer products a testing strategy for NP should be established. Due to large gaps in data, significant amounts of groundwork are warranted for a testing strategy to be established on a sound scientific basis

    On the contribution of mucosal mast cells to the regulation of mouse intestinal barrier function

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    The primary functions of the small intestine are the digestion and transport of luminal content and the absorption of nutrients. During these processes the intestinal mucosa is exposed to various ingested and resident pathogens. The ability of the intestinal wall to prevent transmucosal passage of toxins or of harmful micro-organisms and their products is defined as the intestinal barrier function. Defective intestinal barrier function plays a role in a number of disorders such as inflammatory bowel disease, acute pancreatitis (AP), parasite infections and chronic stress. The mechanisms underlying the regulation of the intestinal barrier under (patho)physiological conditions are not well known. The principal goal of this thesis was to investigate the contribution of mucosal mast cells (MMC) to the regulation of the mouse intestinal barrier function. The first chapter of this thesis focuses on the effects of probiotics on the impairment of the mucosal barrier during acute pancreatitis (AP). During clinical AP, a disturbed intestinal barrier function favors the passage of enteric bacteria and toxins resulting in infection. In a mouse model of AP we demonstrate that application of probiotics caused a complete recovery of the damaged epithelial integrity but only when applied before onset of AP. The second chapter of this thesis focuses on the intestinal mucosal barrier during a parasitic infection (intestinal schistosomiasis). Previously, it was shown that MMC can release large quantities of the mouse chymase mMCP-1 or the rat homologue (RMCP-2), which increases the intestinal permeability thereby facilitating the expulsion intestinal parasites. We investigated whether mMCP-1 induces changes in the mucosal barrier and facilitates passage of schistosome eggs across the intestinal wall. The intestinal barrier function of the ileal mucosa was investigated by measuring the electrical resistance of the tissue, the transmucosal passage of a marker molecule, and the secretory response in Ussing chambers. Structural integrity was assessed from the distribution of Occludin, Claudin-3 and ZO-1. We concluded that the impairment of the mucosal barrier function during schistosomiasis is not caused by mMCP-1. The results also indicate that schistosoma egg passage is facilitated by mechanisms which affect the epithelial cells rather than tight junctions. The remaining chapters of this thesis focus on the activation of MMC by the neuropeptide calcitonin gene-related peptide (CGRP). This activation is thought to contribute to the process of neurogenic inflammation via release of mast cell mediators which can regulate the intestinal barrier function. Using pharmacological and immunohistochemical techniques, the presence and functionality of the CGRP1 receptor was demonstrated on MMC. CGRP was found to stimulate a selective release of mMCP-1 from MMC without degranulation. Electron microscopy demonstrated a piecemeal mode of release upon CGRP stimulation of MMC. These findings support the hypothesis that the CGRP signaling from afferent nerves to MMC in the gastrointestinal wall is receptor-mediated. In summary, this thesis presents new mechanisms involved in the activation of intestinal mucosal mast cells. This activation is important for the maintenance of homeostasis and integrity of the mucosal barrier and also provides an appropriate response to injury
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