Dermatoses provocadas por plantas (fitodermatoses)

Abstract

Dermatosis caused by plants is relatively common and may occur by various pathogenic mechanisms. Dermatitis due to physical trauma, pharmacological action, irritation, sensitization, mediated by IgE and induced by light are described. Pseudophytodermatosis caused by plant-delivered elements is also described in the introduction to this work. Keywords: Allergy and immunology; Dermatitis; Plants; Skin diseases Resumo: As dermatoses causadas por plantas são relativamente comuns no nosso meio e podem ocorrer por diversos mecanismos patogênicos. São descritas dermatoses por trauma físico, por ação farmacológica, mediadas por IgE, por irritação, por ação conjunta da luz e por sensibilização. Também são descritas na introdução desta revisão as pseudofitodermatoses causadas por elementos veiculados pelas plantas e, por isso, aparentemente causadas pelas plantas.

Viability of Human Gingival Fibroblast (FGH) Treated with Ethanolic "Aroeira" Extract (Myracrodruon urundeuva Allemão)

“…Similarly, the Myracrodruon urundeuva species, i.e., the "aroeira-do-sertão", although presents desirable properties (antimicrobial, anti-inflammatory, etc. ), its irritating and sensitizing power are high, and it causes allergies and dermatitis (Reis 2010). Another very important point is its dose, which represents an obstacle to guaranteeing the safety and efficacy.…”

“…Another very important point is its dose, which represents an obstacle to guaranteeing the safety and efficacy. Even in the cases that confirm biological activity of the plants, the dosage band at which the desired effect is seen, can be restricted considerably so that the high dosage could induce the harmful effects (Reis 2010). Thus, the purpose of this work was to evaluate the effect of ethanolic extract of "aroeira" at different concentrations on the viability of human gingival fibroblasts.…”

Phytophotodermatitis: still a poorly recognised diagnosis

“…1 2 The acute lesions often present with irregular erythematous streaks or bullae with sharp demarcation between lesional and uninvolved skin. [1][2][3] As the acute eruption clears, it is replaced by hyperpigmented macules that may take months to years to resolve. 1 2 Although phytophotodermatitis is not infrequent, it occurs most commonly after exposure to limes or other citrus fruits.…”

FIRST REPORT OF Glomerella cingulata CAUSING LEAF SPOT ON Dieffenbachia seguine IN BRAZIL

“…This plant is sold for use in religious rites in Bahia and some other Brazilian states. Despite economic importance as a tropical foliage plant, Dieffenbachia is a toxic plant, causing painful and serious injuries of mouth, throat and eyes, when ingested on rubbed, with possible corneal damage (Diógenes and Matos, 1999;Rocha et al, 2006;Reis, 2010;Fiocruz, 2011). (Pataky, 2001;Alippi and López, 2009;Moorman, 2011), but few studies were made in Brazil.…”