A study was conducted to record the histoenzymic changes in the skin of dog infested with different ectoparasites. Infested tissue sections were treated with specific substrates for Succinate (SDH), CytochromeOxidase (CYO), Acid Phosphatase (ACPase) and Alkaline Phosphatase (AKPase) to record the histoenzymic reactivity in the skin of naturally infested dogs with Rhipicephalussanguineus, Ctenoc...

Actively cycling, transit-amplifying cells and quiescent cells including stem cells are found in the layer of the epidermis and hair follicles. To determine the origin of skin tumors, we completely removed the interfollicular epidermis of carcinogen-initiated mice by an abrasion technique known to leave the hair follicles undisturbed. The interfollicular epidermis of the abraded mice quickly re...

Rifaximin is a nonsystemic antibiotic indicated for diarrhea-predominant irritable bowel syndrome (IBS-D) (1). A randomized, double-blind (DB), placebo-controlled, phase 3 trial (TARGET 3; NCT01543178) assessed up to three 2-week courses of rifaximin (2). Adults with IBS-D who responded to 2 weeks of open-label rifaximin treatment (550 mg three times a day [TID]) during a 4-week posttreatment f...

In a previous publication on the Gram staining material of human epidermis we advanced the theory that keratohyalin contained a highly resistant mucopolysaccharide. In the course of normal keratinization this material was decomposed, while in parakeratotic and many other types of pathologic scales it was retained in the horny layer (1). The evidence presented was indirect: we found that the ext...

Steinert [Biochem. J. (1975) 149, 39-48] reported that the alpha-keratin polypeptides (the subunits of the intracellular keratin filaments) of bovine hoof and snout epidermis are the same. We now demonstrate that this is not so: in addition to the seven polypeptides previously identified in hoof epidermis, snout epidermis also contains at least three other polypeptides of higher molecular weigh...

BACKGROUND Aberrant expression patterns of nuclear lamins have been described in various types of cancer depending on the subtype of cancer, its aggressiveness, proliferative capacity and degree of differentiation. In general, the expression of A-type lamins (lamins A and C) has been correlated with a non-proliferating, differentiated state of cells and tissues. OBJECTIVES To establish and co...

CONTEXT AND OBJECTIVE The technique of obtaining human skin with dermis and epidermis reconstructed from cells isolated from patients can enable autologous skin grafting on patients with few donor sites. It also enables in vitro trials on chemicals and drugs. The objective of this work was to demonstrate a method for obtaining human skin composed of associated dermis and epidermis, reconstructe...

When beta-catenin signalling is disturbed from mid-gestation onwards lineage commitment is profoundly altered in postnatal mouse epidermis. We have investigated whether adult epidermis has the capacity for beta-catenin-induced lineage conversion without prior embryonic priming. We fused N-terminally truncated, stabilised beta-catenin to the ligand-binding domain of a mutant oestrogen receptor (...

The TAF4 subunit of transcription factor TFIID was inactivated in the basal keratinocytes of foetal and adult mouse epidermis. Loss of TAF4 in the foetal epidermis results in reduced expression of the genes required for skin barrier function, leading to early neonatal death. By contrast, TAF4 inactivation in adult epidermis leads to extensive fur loss and an aberrant hair cycle characterised by...