PubMed Health⌕ Search

PubMed · 9810883

Cutaneous small-vessel vasculitis.

Abstract

Cutaneous small-vessel vasculitis (CSVV) refers to a group of disorders usually characterized by palpable purpura; it is caused by leukocytoclastic vasculitis of postcapillary venules. CSVV can be idiopathic or can be associated with a drug, infection, or underlying systemic disease. Initially, the pathogenesis of CSVV is immune complex related, but in its later stages different pathogenetic mechanisms may intensify the reaction and lymphocytes may predominate in the infiltrate. Cure requires elimination of the cause (ie, drugs, chemicals, infections, food allergens) when possible, as well as therapy with nonsteroidal antiinflammatory agents, corticosteroids, dapsone, potassium iodide, fibrinolytic agents, aminocaproic acid, immunosuppressive agents (ie, cyclophosphamide, azathioprine, methotrexate, cyclosporine) or even monoclonal antibodies, depending on disease severity.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

T Lotti, I Ghersetich, C Comacchi, J L Jorizzo. 1998. Cutaneous small-vessel vasculitis.. https://doi.org/10.1016/s0190-9622(98)70039-8

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Stereoselective one-pot synthesis of constrained N,O-orthogonally protected C-glycosyl norstatines [C(1')-aminoglycosyl-1,3-dioxolan-4-ones].

A procedure for the synthesis of conformationally constrained C-glycosyl norstatines has been developed. The key step of the reaction is the addition of (S)-N-sulfinyl azomethines to chiral (2S)-enolates of dioxolanones which exploits Seebach's "SRS" principle. The trisubstituted C-glycosyl-alpha-hydroxy-beta-amino acids are formed as N,O-orthogonally protected 1'-glycosyl-sulfinylamino-dioxolan-4-ones, usually with high diastereomeric excesses. Both the sulfinyl group at the nitrogen atom and the acetal moiety of the dioxolanone ring were selectively removed, thus demonstrating the orthogonality of the two protecting groups. In fact, the MeO(-) induced methanolysis of the acetal group gave the corresponding methyl C-glycosyl-sulfinylamino-isoserinates, while the acid induced removal of the sulfinyl group gave the Nu-deprotected 1'-glycosylamino-dioxolan-4-ones, which were in several cases subjected to a one-pot base-induced cyclization yielding the corresponding glycosyl-beta-lactams. This allowed the stereochemical configuration assessment of the parent 1'-glycosyl-sulfinylamino-dioxolan-4-ones by chemical correlation methods or by NOE experiments performed on the beta-lactams.

Aminocaproates↗

Optimization of HPLC chromatographic conditions for determination of Transkarbam 12 and its degradation products.

This paper deals with searching of HPLC chromatographic conditions for determination and separation of Transkarbam 12 (T 12) and its two main degradation products (omega-aminocaproic acid and dodecylalcohol). T 12 is a new substance which belongs to the group of accelerators of transdermal penetration. Chromatographic separation was achieved using Separon SGX C18 analytical column (150 mm x 3 mm i.d.; 5 microm). Mobile phase contained acetonitrile and sodium acetate buffer pH 4.5 at the flow rate of 1 ml/min. Separation was carried out under the conditions of gradient elution. After the modification of the structure by derivatization reagent (3,5-dinitrobenzoyl chloride) detection at wavelength 230 nm was realized. The aim of this study was not only the optimization of the separation of derivatization reagent and derivatized T 12, Ak and D but also optimal derivatization processes for all three substances.

Aminocaproates↗