[Dermoepidermic junction: a selective, complex and vital barrier].

Dermoepidermic junction (DEJ) is a highly complex region, containing a great variety of cellular elements, which despite of having different embriogenesis, interact with each other, generating different substances that keep the function and homeostasis of the greatest organ of the human body. DEJ is regarded as a highly specialized basal lamina, which acts as a highly selective pathway for the migration of cells and macromolecules, inducing cellular differentiation and micro enviromental metabolism modifications. DEJ may be divided into three zones regarding the basal lamina 1--the nearest to epidermic zone, having tonofilaments and hemidesmosomes, which keep anchored basal cells.

[Granulosa cell tumors: structural and ultrastructural analysis].

Unlabelled: These ovarian neoplasm derive from the ovarian stromal component constituting around the 5 to 12% of all ovarian tumors.

Objective: To examine the histopathological and ultrastructural morphologic characteristic of the neoplastic cells and the patognomonic element of these tumors: Call Exner's Bodies

Materials And Methods: The materials corresponded to 2 women of 52 and 55 years. The syntomatology was abdominal tumor that went in increase.

Vascular endothelium express CS-1 fibronectin in allergic contact dermatitis.

Background: Allergic contact dermatitis (ACD) is a common human dermatosis in which not all the mechanisms involved in its pathogenesis have been elucidated.

Objective: To study the expression of CS-1 fibronectin, TARC and Th1-associated chemokine receptors in biopsies from allergic patch test reactions.

Material And Methods: Thirteen patients already diagnosed with ACD were challenged on the back with the antigen responsible of the disease and macroscopic responses and biopsies taken after 48 h.

Barth's syndrome-like disorder: a new phenotype with a maternally inherited A3243G substitution of mitochondrial DNA (MELAS mutation).

An Argentine male child died at 4.5 years of age of a lethal mitochondrial disease associated with a MELAS mutation and a Barth syndrome-like presentation. The child had severe failure to thrive from the early months and for approximately two years thereafter.

[Differential expression of mucin carbohydrates in human endometria].

The use of Lectins to identify oligosaccharides in mucin substances has been increased by the role played by cell surface carbohydrates in invasion and metastasis processes. We studied in this work normal endometrial tissue, with benign and malignant entities in search for the presence of the Galactose beta 1-3 N Acetylgalactosamine(Gal beta 1-3 GalNAC alpha and Galactose beta 1-3 N Acetylgalactosamine (Gal beta 1-3 alpha and beta) using the Lectins: Agaricus bisporus (ABL) and Arachis hipogea (PNA) respectively. The specific control were baths with galactose for PNA and with porcine stomach mucin for ABL.