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Modern Applied Statistics With S

https://www.emcdda.europa.eu/attachements.cfm/att_231442_EN_INT17_easl-recommendations-on-treatment-of-hepatitis-C.pdf

EASL Recommendations on Treatment of Hepatitis C

Review of recent research on hepatitis C therapy for 54th annual meeting of the American association for the study of liver diseases

Echinococcosis in humans is a zoonotic infection caused by larval stages (metacestodes) of cestode species of the genus Echinococcus. Cystic echinococcosis (CE) is caused by Echinococcus granulosus, alveolar echinococcosis (AE) is caused by E. multilocularis, and polycystic forms are caused by either E. vogeli or E. oligarthrus. In untreated cases, AE has a high mortality rate. Although control is essentially feasible, CE remains a considerable health problem in many regions of the northern and southern hemispheres. AE is restricted to the northern hemisphere regions of North America and Eurasia. Recent studies have shown that E. multilocularis, the causative agent of AE, is more widely distributed than previously thought. There are also some hints of an increasing significance of polycystic forms of the disease, which are restricted to Central and South America. Various aspects of human echinococcosis are discussed in this review, including data on the infectivity of genetic variants of E. granulosus to humans, the increasing invasion of cities in Europe and Japan by red foxes, the main definitive hosts of E. multilocularis, and the first demonstration of urban cycles of the parasite. Examples of emergence or reemergence of CE are presented, and the question of potential spreading of E. multilocularis is critically assessed. Furthermore, information is presented on new and improved tools for diagnosing the infection in final hosts (dogs, foxes, and cats) by coproantigen or DNA detection and the application of molecular techniques to epidemiological studies. In the clinical field, the available methods for diagnosing human CE and AE are described and the treatment options are summarized. The development of new chemotherapeutic options for all forms of human echinococcosis remains an urgent requirement. A new option for the control of E. granulosus in the intermediate host population (mainly sheep and cattle) is vaccination. Attempts are made to reduce the prevalence of E. multilocualaris in fox populations by regular baiting with an anthelmintic (praziquantel). Recent data have shown that this control option may be used in restricted areas, for example in cities, with the aim of reducing the infection risk for humans.

Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern

https://www.journal-of-hepatology.eu/article/S0168-8278(15)00259-7/pdf

EASL-ALEH Clinical Practice Guidelines: Non-invasive tests for evaluation of liver disease severity and prognosis.

/pdf/real-time-elastography-in-the-assessment-of-liver-fibrosis-tlhoethlq2.pdf

Real-time elastography in the assessment of liver fibrosis.

Ascariasis is the most common helminthic infection, but the invasion of worms into the gallbladder is quite rare. This report illustrates the ultrasonographic findings in gallbladder ascariasis of a typical echogenic structure which exhibits nondirectional movements and contains a central anechoic tube, along the long axis of the gallbladder. The role of ultrasound as a diagnostic tool and in the follow-up treatment is stressed.

Ultrasound in the diagnosis of gallbladder ascariasis

OBJECTIVES To assess performance and cutoffs of the 2-dimensional shear wave elastography technique available on the Aplio i800 ultrasound system (Canon Medical Systems, Japan), using transient elastography as reference standard, and to assess the correlation of shear-wave-speed dispersion with liver fibrosis or steatosis. METHODS This was a single-center cross-sectional study. The correlations between values obtained with transient elastography and 2-dimensional-shear wave elastography, and between shear-wave-speed dispersion and fibrosis or steatosis, were assessed with Pearson's r. The diagnostic performance of the 2-dimensional-shear wave elastography for staging significant fibrosis and severe fibrosis compared to transient elastography was assessed using the area under the receiver operating characteristic curve analysis. RESULTS Three hundred sixty-seven patients (198 males and 169 females) were studied. There was a high correlation between 2-dimensional-shear wave elastography and transient elastography (r = 0.87, P 7 and > 9 kPa. Shear-wave-speed dispersion showed a high correlation with fibrosis (r = 0.85, P < 0.0001), whereas there was a very weak correlation with steatosis. CONCLUSIONS The results of this study show that this 2-dimensional-shear wave elastography technique is accurate for staging liver fibrosis. Shear-wave-speed dispersion is highly correlated with liver fibrosis but not with steatosis.

Performance and cutoffs for liver fibrosis staging of a two-dimensional shear wave elastography technique.

To investigate the usefulness of serum cytokine dosage in the clinical management of cystic echinococcosis (CE), we analyzed serum levels of Th1 and Th2 cytokines in patients with hepatic CE in different cyst stages, CE1-2 (active), CE3a-3b (transitional), and CE4-5 (inactive). Ex vivo assessment of Th1 (IFN-γ) and Th2 (IL-4, IL-13, and IL-10) cytokines in sera was carried out using ELISA. IL-10 was undetectable in all serum samples of patients and controls, while a few sera contained measurable amounts of IFN-γ, IL-4, and IL-13. No statistically significant difference was found between the percentages of positive samples for each cytokine and the different groups analyzed (patients/controls, stage, number, location, and size of the cyst, serology, and sex of patients), with the exception of the association of IL-4 and IL-13 with the cyst stage. Overall, this investigation showed many limits of serum cytokine dosage as a marker of biological activity of echinococcal cysts. Because of low sensitivity and lack of specificity of this test, we believe that other ways to evaluate ex vivo biological activity of the cysts should be explored.

/pdf/serum-cytokine-profile-by-elisa-in-patients-with-46w7sro9h1.pdf

Serum Cytokine Profile by ELISA in Patients with Echinococcal Cysts of the Liver: A Stage-Specific Approach to Assess Their Biological Activity

Cystic echinococcosis (CE) is increasingly seen in immigrants from endemic areas to Western countries; however, it is rarely reported in short-term travels to endemic areas. This is partly because the echinococcal cyst typically grows slowly and may long remain clinically silent. We describe a case of cystic echinococcosis in a man born and living in a nonendemic urban area in North Italy that was acquired during a period of frequent travels in highly endemic countries.

/pdf/cystic-echinococcosis-of-the-liver-associated-with-repeated-4053h64j8y.pdf

Carlo Filice

Papers

Real-time elastography in the assessment of liver fibrosis.

Ultrasound in the diagnosis of gallbladder ascariasis

Performance and cutoffs for liver fibrosis staging of a two-dimensional shear wave elastography technique.

Serum Cytokine Profile by ELISA in Patients with Echinococcal Cysts of the Liver: A Stage-Specific Approach to Assess Their Biological Activity

Cystic echinococcosis of the liver associated with repeated international travels to endemic areas.