Search results for " Gian"
showing 10 items of 114 documents
Porcine Dermis-Derived Collagen Membranes Induce Implantation Bed Vascularization Via Multinucleated Giant Cells: A Physiological Reaction?
2014
In this study, the tissue reactions to 2 new porcine dermis-derived collagen membranes of different thickness were analyzed. The thicker material (Mucoderm) contained sporadically preexisting vessel skeletons and fatty islands. The thinner membrane (Collprotect) had a bilayered structure (porous and occlusive side) without any preexisting structures. These materials were implanted subcutaneously in mice to analyze the tissue reactions and potential transmembranous vascularization. Histological and histomorphometrical methodologies were performed at 4 time points (3, 10, 15, and 30 days). Both materials permitted stepwise connective tissue ingrowth into their central regions. In the Mucoderm…
TRAP-Positive Multinucleated Giant Cells Are Foreign Body Giant Cells Rather Than Osteoclasts: Results From a Split-Mouth Study in Humans
2014
This study compared the material-specific tissue response to the synthetic, hydroxyapatite-based bone substitute material NanoBone (NB) with that of the xenogeneic, bovine-based bone substitute material Bio-Oss (BO). The sinus cavities of 14 human patients were augmented with NB and BO in a split-mouth design. Six months after augmentation, bone biopsies were extracted for histological and histomorphometric investigation prior to dental implant insertion. The following were evaluated: the cellular inflammatory pattern, the induction of multinucleated giant cells, vascularization, the relative amounts of newly formed bone, connective tissue, and the remaining bone substitute material. NB gra…
Foreign Body Giant Cell–Related Encapsulation of a Synthetic Material Three Years After Augmentation
2016
Bone substitute materials of different origin and chemical compositions are frequently used in augmentation procedures to enlarge the local bone amount. However, relatively little data exist on the long-term tissue reactions. The presented case reports for the first time histological and histomorphometrical analyses of a nanocrystaline hydroxyapatite–based bone substitute material implanted in the human sinus cavity after an integration period of 3 years. The extracted biopsy was analyzed histologically and histomorphometrically with focus on the tissue reactions, vascularization, new bone formation, and the induction of a foreign body reaction. A comparably high rate of connective tissue (…
Child mandibular giant cell granuloma: Case report
2016
Giant Cell Granuloma is a rare non-odontogenic lesion. Its name derives from the presence into the tumor of giant cells, similar to osteoclasts. On the basis of the biological behaviour, there are 2 variants of this tumor differentiated between aggressive and non-aggressive lesions. Treatment options reported in the literature include marginal or segmental osteotomy. If the lesion is classified as non-aggressive the marginal osteotomy (curettage) is the adequate treatment; in contrast, in presence of aggressive lesions, segmental osteotomy (en bloc resection) appears to yield the best overall outcome. The aim of the present report was to describe a case of primary Giant Cell Granuloma of th…
Clouds and red giants interacting with the base of AGN jets
2012
Extragalactic jets are formed close to supermassive black-holes in the center of galaxies. Large amounts of gas, dust, and stars cluster in the galaxy nucleus, and interactions between this ambient material and the jet base should be frequent, having dynamical as well as radiative consequences. This work studies the dynamical interaction of an obstacle, a clump of matter or the atmosphere of an evolved star, with the innermost region of an extragalactic jet. Jet mass-loading and the high-energy outcome of this interaction are briefly discussed. Relativistic hydrodynamical simulations with axial symmetry have been carried out for homogeneous and inhomogeneous obstacles inside a relativistic …
The reason for a project that was never performed: Alvar Aalto and the residential complex in Pavia (1966-68)
2015
This paper aims to analyze the characteristics of the project for the residential complex "Patrizia" in Pavia by Alvar Aalto (1966-1968). Although not realized, for political and economic reasons, the project offers an interesting example of urban planning in an “organic key”. In particular, this paper aims to contextualize the project of Aalto in the broader context of the residential building in Italy after World War II, when the problems of reconstruction and "home" are the heart of the debate on architecture. The project, in fact, takes place in the years immediately following the experiments of the social housing plan INA CASA (1949-63), which - with differences in design and architect…
Un labirinto del tardo Quattrocento nel giardino di Giovan Tomaso Moncada
2017
Da un manoscritto databile intorno al 1550 e un saggio a stampa sulle feste reali celebrate a Palermo, pubblicato nel 1703, sappiamo dell'esistenza di un labirinto nel giardino dell'aristocratico Giovan Tomaso Moncada, costruito negli anni settanta o negli anni ottanta del XV secolo nella campagna vicino Palermo. Si tratta della scena in cui ebbe luogo un ricco banchetto offerto al Viceré Ferdinando de Acuña. Secondo l'autore del manoscritto, Gian Giacomo Adria, modello di riferimento per il labirinto siciliano era quello cretese del Minotauro e lo stesso aveva forma quadrata, con otto circuiti, circondato da un muro decorato con un motivo a chiavi spezzate. Sebbene non abbiamo elementi suf…
A catalogue of the Castniidae (Lepidoptera) in the California Academy of Sciences, with general and historical comments
2019
A catalogue of the Castniidae (Lepidoptera) in the California Academy of Sciences, with general and historical comments. The material representing 168 specimens with 46 species and subspecies belonging to the Castniidae (Lepidoptera) deposited in the California Academy of Sciences was studied. A brief comment on the history of Academy is provided, as well as general comments on natural history, distribution and other details for each mentioned species and subspecies.
Castniidae (Lepidoptera) In The Collection Of The Museum And Institute Of Zoology Polish Academy Of Sciences In Warsaw
2017
The material representing 14 species and subspecies belonging to the Castniidae (Lepidoptera) deposited in the Museum and Institute of Zoology Polish Academy of Sciences in Warsaw was studied. A brief comment on the history of the Museum is provided. General comments on natural history, distribution, and other details are presented for each mentioned species and subspecies.
Difference in the expression of IL-9 and IL-17 correlates with different histological pattern of vascular wall injury in giant cell arteritis
2015
OBJECTIVE: GCA is a large- and medium-vessel arteritis characterized by a range of histological patterns of vascular wall injury. The aim of this study was to immunologically characterize the various histological patterns of GCA. METHODS: Thirty-five consecutive patients with biopsy-proven GCA and 15 normal controls were studied. IL-8, IL-9, IL-9R, IL-17, IL-4, TGF-β and thymic stromal lymphopoietin expression was evaluated by RT-PCR and immunohistochemistry on artery biopsy specimens. Confocal microscopy was used to characterize the phenotypes of IL-9-producing and IL-9R-expressing cells. Five additional patients who had received prednisone when the temporal artery biopsy was performed wer…