Arzu Erel

The seroprevalence of Helicobacter pylori and nitric oxide in acne rosacea

Background Acne rosacea is a dermatosis with unknown etiology. Some studies have reported a high prevalence of Helicobacter pylori infection in acne rosacea. Other studies have reported a decrease in the severity of the lesions of acne rosacea after eradication of H. pylori. H. pylori is a Gram‐negative bacterium which colonizes the gastric mucosa and increases the synthesis of oxygen radicals, such as superoxide and proinflammatory cytokines. These cytokines have been demonstrated to stimulate the synthesis of the inflammatory species nitric oxide (NO). In this study, we examined the role of NO in the possible effect of H. pylori in acne rosacea.

Comparison of histopathologic and clinical evaluations of pathergy test in Behçet's disease.

Background The pathergy test, an important test in the diagnosis of Behçet’s disease, is currently applied with disposable/sharp needles and evaluated only clinically (no histopathologic evaluation). In this study, the usefulness of the pathergy test conducted intradermally and intravenously with disposable/sharp needles in the diagnosis and determination of the activation of the disease is studied in comparison with the test conducted with nondisposable/blunt needles. In addition, histopathologic evaluation of the pathergy test is compared with the clinical evaluation.

RETICULATE ACROPIGMENTATION OF KITAMURA: TWO CASE REPORTS

Background. Reticulate acropigmentation of Kitamura (RAK) is an autosomal dominantly inherited dermatosis.

Livedo reticularis associated with renal cell carcinoma

The Correspondence Section serves as a forum for opinion exchange about subjects of general interest such as dermatologic training, relations between dermatologists and pharmaceutical houses, governmental control of dermatology and medical practice in general, peculiarities of dermatology related to geographic, climatic, or racial factors, the ̄ow of information and publications, as well as other concerns the readership might have. Contributions are welcome and should conform to the usual format for correspondence. Manuscripts will undergo standard editorial procedures. Submit all correspondence to Roberto CorteÂs Franco, MD, Fax: +52 (5) 665 7691. E-mail: cortesmd@prodigy.net.mx