Search results for "TYR"
showing 10 items of 2017 documents
Kinetic properties of catecholoxidase activity of tarantula hemocyanin
2008
Phenoloxidases occur in almost all organisms, being essentially involved in various processes such as the immune response, wound healing, pigmentation and sclerotization in arthropods. Many hemocyanins are also capable of phenoloxidase activity after activation. Notably, in chelicerates, a phenoloxidase has not been identified in the hemolymph, and thus hemocyanin is assumed to be the physiological phenoloxidase in these animals. Although phenoloxidase activity has been shown for hemocyanin from several chelicerate species, a characterization of the enzymatic properties is still lacking. In this article, the enzymatic properties of activated hemocyanin from the tarantula Eurypelma californi…
Saint Agnes of Rome, the Pope and the “Purpuresque Pavo”: Memory Issues of the Apse Mosaic of Santa Agnese fuori le mura (625-638)
2018
The theme of memory is at the heart of apse mosaic of Santa Agnese fuori le mura. It’s a visual discourse about a roman martyr linked to the founder of new basilica and the “purpuresque pavo”. With the offering of this mosaics, the pope Honorius honours Saint Agnes’s memory. Honorius reaches to blend in a complex system of commemoration. Some close links are forged between the pope and the roman martyr. A true locus memoriae was established on the Via Nomentana since the middle of the IVth century. In the dedicatory inscription, the “purpuresque pavo” reminds the sacrifice of Christ, the martyrdom of Saint Agnes and the resurrection of the Elect. Thus, Honorius left an indelible mark in Rom…
Determination of metal concentrations in certified plastic reference materials after small-size autoclave and microwave-assisted digestion followed w…
2017
Abstract The digestion methods for the determination of As, Cd, Cr, Pb, Sb, Sn and Zn concentrations in plastic samples using microwave-assisted digestion (MW-AD) and small-size autoclave digestion was developed. The certified polyethylene, polypropylene, polyvinyl chloride and acrylonitrile butadiene styrene certified reference materials were used in order to find digestion method working properly for several sample matrices. Efficiency of the digestion methods was evaluated by analyzing the residual carbon in digests by TOC analyzer. MW-AD using a mixture of 7 mL of HNO 3 and 3 mL of H 2 O 2 as a digestion solution resulted in excellent recoveries for As, Cd, Pb, Sb and Zn, and were in th…
Espace et art de la formule visuelle à Rome sous le pontificat de Pascal Ier (817-824) : l’exemple de la basilique Sainte-Praxède
2006
Il s’agit de réfléchir sur les différentes formules (architecturales, textuelles et iconographiques) mises en œuvre par le pape Pascal Ier dans la basilique Sainte-Praxède à Rome et ce, afin de composer un discours ecclésiologique à la fois complexe et efficace. Figuré en porteur de maquette au sein même de l’église offerte, le pape se présente comme le fondateur d’un édifice dans lequel il cherche à se rendre omniprésent. Grâce à cette basilique conçue comme un reliquaire monumental, Pascal Ier se rapproche de plusieurs martyr(e)s romain(e)s et de Dieu tout en invitant les fidèles à dépasser le niveau du visible, du matériel, du sensible. La maquette de l’édifice présentée comme une matéri…
Adsorption of methotrexate and calcium leucovorin onto cholestyramine in vitro.
2003
Abstract Methotrexate (MTX), an antimetabolite of folic acid, is a drug widely used in the treatment of different types of cancer. When high doses are administered, it is necessary to interrupt its action by administering calcium leucovorin (CaL). The main pathway of MTX and CaL elimination in humans occurs through the kidney, but about 10% is excreted in the faeces via the bile. Drugs, foods and sorbents in intestinal lumen modify MTX and CaL reabsorption. Individual and simultaneous studies on the adsorption of MTX and CaL from aqueous phosphate buffer by cholestyramine were carried out in order to calculate the adsorption process of MTX and CaL to cholestyramine, and to characterize the …
Il ruolo di molecole POSS(polyhedral oligomeric silsesquioxane) sulle relazioni proprietà struttura nei nanocompositi a base polistirenica
2012
Molecular-Biology-Driven Frontline Treatment for Chronic Lymphocytic Leukemia: A Network Meta-Analysis of Randomized Clinical Trials
2023
The treatment of chronic lymphocytic leukemia (CLL) currently relies on the use of chemo-immunotherapy, Bruton’s tyrosine kinase inhibitors, or BCL2 inhibitors alone or combined with an anti-CD20 monoclonal antibody. However, the availability of multiple choices for the first-line setting and a lack of direct head-to-head comparisons pose a challenge for treatment selection. To overcome these limitations, we performed a systematic review and a network meta-analysis on published randomized clinical trials performed in the first-line treatment setting of CLL. For each study, we retrieved data on progression-free survival (according to del17/P53 and IGHV status), overall response rate, complet…
Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes
2021
The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield. The reaction with 1,3-cyclohexadiene permits the preparation of monofluorinated bicyclo[2.2.2]oct-2-enes. The kinetic data of the reactions with 1,3-cyclopentadiene and 1,3-cyclohexadiene were used to calculate activation parameters. Furthermore, the synthetic utility of the cycloadducts obtained was demonstrated.
Role of the NF-kB pathway and nitric oxide in mammary gland involution after weaning. Implications in breast cancer
2013
INTRODUCCIÓN La glándula mamaria es un órgano dinámico que alcanza su máximo desarrollo funcional con la lactancia, momento en el cual, a través de la producción de leche, aporta nutrientes y protección inmunológica a las crías de los mamíferos. Cuando la lactancia finaliza con el destete, el exceso de tejido glandular debe desaparecer y la glándula sufre una extensa remodelación hasta alcanzar nuevamente un estado pre-gestacional, preparada para un nuevo ciclo. La involución del tejido mamario es un proceso complejo durante el cual se suceden de forma coordinada una serie de eventos como la muerte de las células epiteliales secretoras, la proliferación de tejido adiposo circundante y la re…
Recykling odpadów z szyb samochodowych i szkła budowalnego z folią PVB
2016
Dokonano analizy możliwości wykorzystania odpadów z szyb samochodowych klejonych oraz bezpiecznego szkła budowlanego z folią PVB. Aktualnie najczęściej stosowaną folią w szkle klejonym jest folia poliwinylobutyralu (PVB). Niniejsza praca przedstawia analizę możliwości odzyskania surowców w postaci folii PVB i szkła z odpadów szyb klejonych. Analizowana metoda polega na rozpuszczeniu folii PVB oraz separacji folii od kawałków szkła. Przedstawiono również możliwości zastosowania rozpuszczonej folii PVB, a szkła jako wsadu surowcowego w hutach szkła.