No abstract available.
Eating* ; Nephrosis, Lipoid* ; Toxicodendron*

Toxicodendron vernicifluum, also called as Rhus verniciflua is a deciduous tree belonging to Anacardiaceae family. Two new caffeoyl threonate esters, rhuseols A (1) and B (2), together with 5-O-(E)-caffeoylquinic acid methyl ester (3) were isolated from the leaves of T. vernicifluum. The structures of isolated compounds were established by using 1D and 2D NMR in combination with HR-ESI-MS. Compounds 1 – 3 showed DPPH radical scavenging effects with IC₅₀ values of 47.9, 107.8 and 15.4 µM, respectively. Taken together, these compounds might contribute to the antioxidant properties of the leaves of T. vernicifluum, which will be useful for various oxidative stress mediated diseases.
Anacardiaceae ; Antioxidants ; Esters ; Humans ; Oxidative Stress ; Rhus ; Toxicodendron ; Trees

It has been well known for a long time that Rhus species are belonged botanically to same family called family Anacardacea and their allergenic components are identical because it contains 3-pentadecyl catechol. However, Mason (1954) and some investigators suggest the possibility that some individuals may be sensitive to a component of the oleoresin other than 3-pentadecyl catechol. By this suggestion, author performed the patch test on 138 individuals with 4 species of Korean Rhus tree (Rhus verniciflua, Rhus trichocarpa, Rhus javanica, and Rhus sylvestris.) and observed the incidence of latent sensitivity to dry leaves of Rhus trees and urushiol, The patch test results on sensitivity to Rhus verniciflua, Rhus trichocarpa, Rhus javanica, and Rhus sylvestris showed 35.50%, 27.53%, 21.01%. 28. 26%, and 29. 71% respectively and these results could make the suggestion that cross sensitivity between each Rhus trees are few and a certain specific antigenic component may be contained in every Rhus tree leaves. On animal experiment concerning the basic study for the extraction of Rhus tree antigen, author could easily sensitize the guinea pig with urushiol but couldn't challenge these animal with methanol aceton extract of Rhus leaves. From these findings, author proposed that Korean Rhus trees are different immunologically to poison ivy tree antigen and a certain specificities of antigeniciy contain in each Korean Rhus. But this postulation will need further experimental study as multiple step fractionation with Rhus tree.
Animal Experimentation ; Animals ; Guinea Pigs ; Humans ; Incidence ; Methanol ; Patch Tests ; Research Personnel ; Rhus* ; Toxicodendron ; Trees*

Dermatitis occurring after ingestion of urushiol chicken is quite common in Korea. Allergic contact dermatitis is well established as a type IV immune reaction. The severity and acuteness of the inflammation determines the clinical appearance of allergic contact dermatitis. The prototype is poison ivy, which has urushiol, the pentadecacatechol produced by several related plants in the Rhus genus. Unlike erythema multiforme, the erythema multiforme-like eruption is considered to be an id-like reaction occurring with powerful sensitization, penetration-enhancing substances, high concentrations or repeated application of allergens. A 34-year-old female patient presented with multiple iris or annular shaped maculopapular eruption appeared on the margin of skin lesion of systemic allergic contact dermatitis.
Adult ; Allergens ; Chickens ; Dermatitis ; Dermatitis, Allergic Contact* ; Eating ; Erythema Multiforme ; Erythema* ; Female ; Humans ; Inflammation ; Iris ; Korea ; Rhus ; Skin ; Toxicodendron

Hematogenous contact dermatitis may be produced by the systemic administrationof a drug to an individeal who has been previously sensitized by the topical application of the drug or related chemicals. 37 year-old male patient had frequent rhus dermatitis. He took rhus with chicken for treatment of peptic ulcer, on next day generalized skin rashes with itching sensation were developed. the aptient was diagnosed as hematogenous contact dermatitis or systemic exzematous contact dermatitis according to the history, symptoms and the result of patch test.
Adult ; Chickens ; Dermatitis, Contact ; Dermatitis, Toxicodendron ; Eating* ; Exanthema ; Humans ; Male ; Patch Tests ; Peptic Ulcer ; Pruritus ; Rhus* ; Sensation

No abstract available.
Animals ; Chickens ; Cookery ; Dermatitis, Toxicodendron ; Food Poisoning/*etiology ; Gastrointestinal Diseases/chemically induced ; Hepatitis, Toxic/*etiology ; Human ; Korea ; Meat ; Phytotherapy/adverse effects ; Rhus/*adverse effects