Publications by authors named "Tato F"

Peripheral arterial disease (PAD) of the upper extremity is much less frequent and aetiologically more heterogeneous than lower extremity PAD. The clinical approach to patients with upper extremity PAD must consider a range of distinctive features regarding symptoms, physical findings and diagnostic strategies. This review focusses on these specific characteristics of upper extremity PAD and the new developments in this field.

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The RECcording COurses of vasculaR Diseases (RECCORD) registry established by the German Society of Angiology - Society for Vascular Medicine aimed to address the lack in contemporary real-world data regarding current practice of medical and interventional care in vascular patients. We herein report the demographic and procedural characteristics of the first 1000 patients undergoing endovascular revascularization (EVR) for symptomatic peripheral artery disease (PAD). RECCORD is an observational, prospective, multicenter, all-comers registry.

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A new catalytic system for the photooxidation of sulfides based on Pt(ii) complexes is presented. The catalyst is capable of oxidizing a large number of sulfides containing aryl, alkyl, allyl, benzyl, as well as more complex structures such as heterocycles and methionine amino acid, with complete chemoselectivity. In addition, the first sulfur oxidation in a continuous flow process has been developed.

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A series of pseudodipeptide-based chiral 1,3,4,5-tetrasubstituted-2-oxopiperazines has been designed and synthesized as potential PAR1 antagonists. These highly functionalized piperazines were synthesized from aromatic and basic amino acid derived Ψ[CH(CN)NH]pseudodipeptides through a four step pathway that involves reduction of the cyano group to build the 2-oxopiperazine ring, followed by selective functionalization at the N₄-, N₁-positions, and at the exocyclic moiety at position C5. This regioselective functionalization required the fine tuning of reaction conditions.

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Objectives: The aim of our study was to describe the sonographic pattern and clinical manifestations of extracranial (i.e. carotid and proximal arm arteries) and cranial arterial involvement in patients with giant cell arteritis (GCA).

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Demographic developments have led to an exponential increase of cardiovascular illness. Additionally, the technical development of conservative and invasive treatment modalities has added to an increase of differentiated therapy. The development of vascular centres led to optimised processes in diagnostic and therapy according to their essential requirements.

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Objective: To determine the extent and clinical significance of giant cell arteritis (GCA) of the femoropopliteal arteries.

Methods: This was a retrospective clinical color duplex sonography (CDS) study; 60 of 112 consecutive patients with the diagnosis of GCA underwent complete clinical examination of the lower extremities including the vasculature, systolic ankle pressure measurement, and CDS scans of the femoropopliteal arteries within 1 year after diagnosis of GCA. Circumferential, hypoechogenic, homogenous wall thickening was regarded as a hallmark of femoropopliteal GCA.

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Background: The clinical spectrum of giant cell arteritis (GCA) varies from classical temporal arteritis (TA) to generalized large vessel GCA (LV-GCA) and fever of unknown origin (FUO). Extent and distribution of extracranial involvement in these different presentations of GCA is not well known, and its detection may depend on the choice of vascular imaging.

Patients And Methods: In 24 patients with newly diagnosed GCA we systematically evaluated the presence and distribution of extracranial involvement by physical examination, duplex sonography (DS), and FDG-PET.

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For patients with a diabetic foot wound the risk for amputation is high. The three main reasons for developing foot ulcers in diabetes are biomechanical factors, neurologic and vascular alterations. According to this the ulcers can be categorized in neuropathic (50%), ischemic (15%) and neuroischemic (35%).

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Objectives: To evaluate the clinical characteristics and imaging results (CDS, 18-FDG-PET) of patients with large vessel giant cell arteritis (LV-GCA) presenting as fever of unknown origin (FUO).

Methods: From a series of 82 patients with GCA we identified 8 patients with FUO as initial disease manifestation. Clinical characteristics and results of CDS and 18-FDG-PET were analysed.

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Enantiomerically enriched alpha,alpha-disubstituted phenylacetonitriles have been readily prepared by stereoselective quaternization of 2-alkyl-2-[2-(p-tolylsulfinyl)phenyl]acetonitriles with different alkylating electrophiles in the presence of bases. The use of potassium hexamethyldisilazane (KHMDS)/[18]crown-6 ether and NHMDS with alkyl halides afforded S,S(S) and R,S(S) diastereoisomers, respectively, in high enantiomeric purities, thus providing stereodivergent processes for synthesizing both isomers. The dependence of the stereochemical course of the reactions on the experimental conditions (mainly on the counterion) has been rationalized by assuming a planar or pyramidal structure for the benzylic carbanions.

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C'mon 1,2-dione: A new diastereo- and enantioselective Lewis base catalyzed domino Michael/aldol reaction converts alpha,beta-unsaturated aldehydes and 1,2-diones into chiral bicyclo[3.2.1]octane-6-carbaldehydes.

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We report herein an efficient and simple route to synthesize 1-nosyl 3,3-dichloro-beta-lactams using a Staudinger reaction between N-nosyl imines and dichloroketene. The resulting dichloroazetidines were opened to afford highly functionalized building blocks.

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Giant cell arteritis (GCA) is increasingly being recognized as a systemic vascular disease, not confined to the cranial arteries. Epidemiological studies have shown that almost one-third of the patients with GCA develop serious peripheral vascular complications during long-term follow up, and there is growing evidence that unrecognized extracranial involvement may be even more common. GCA of large- and medium-sized peripheral arteries typically leads to long tapering and occlusion of the arterial lumen due to concentric intimal thickening, sometimes accompanied by spontaneous dissection.

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Enantiomerically pure alpha-substituted alpha-amino phenylacetonitriles have been readily prepared from 2-p-tolylsulfinylbenzaldimines following a two-step sequence: a moderately stereoselective hydrocyanation of the imines and a completely stereoselective quaternization of the resulting diastereoisomeric mixture of alpha-amino phenylacetonitriles with different alkylating or acylating reagents in the presence of KHMDS. Theoretical calculations support a stereoselectivity control exerted by the remote sulfinyl group, as long as it is responsible for the conformational preferences of the benzyllithium intermediates, which suffer the attack of the electrophiles to the less hindered diastereotopic face.

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