Pemphigus foliaceus (PF) is an immune-mediated disease that causes pustules and crusted lesions, most commonly on the pinnae, nasal planum, periocular area, chin, feet of affected cats. Acantholytic cells caused by dehydration of intercellular adhesions are often seen on cytology…
Pemphigus in Dogs Pemphigus is the general designation for a group of autoimmune skin diseases involving ulceration and crusting of the skin, as well as the formation of fluid-filled sacs and cysts (vesicles), and pus filled lesions (pustules). Some types…
Human epidermis shows a non-neuronal cholinergic system including keratinocyte (kc) acetylcholine (Ach) axis which is composed by enzymes and two families of Ach receptors (muscarinic and nicotinic receptors). The activity of these two receptors can regulate the interkeratinocytes and kcs-extracellular…
Although bacterial pyoderma is among the most commonly encountered dermatologic conditions in dogs, some cases present diagnostic challenges even to experienced clinicians. This article presents several unusual manifestations of pyoderma, including bullous impetigo, superficial spreading pyoderma, mucocutaneous pyoderma, and post-grooming…
Pemphigus vulgaris (PV) is an autoimmune mucocutaneous disease presenting clinically with blisters or erosions of the skin and mucous membrane. The main histopathologic characteristic of this disease is suprabasal vesicles due to loss of cell–cell adhesion between keratinocytes named acantholysis.…
Pyodermatitis-pyostomatitis vegetans (PD-PSV) is a rare disorder characterized by mucocutaneous involvement and associated with inflammatory bowel disease. A 42-year-old woman with ulcerative colitis who manifested verrucous and pyogenic lesions on her scalp, neck, axillae, inguinal areas, umbilicus, trunk and oral…
Introduction: Though oral aphthosis is common, it has a significant impact on the quality of life in the patients. It is the most common oral ulcerative condition encountered in clinical practice. This study describes the characteristics and patterns of oral…
Pemphigus is a rare vesiculobullous autoimmune disease that exhibits blistering of the skin and oral cavity. It is caused by autoantibodies directed against antigens on the surface of keratinocytes. All forms of pemphigus are associated with the presence of circulating…
Context.-Pemphigus is a group of autoimmune vesiculobullous diseases characterized by immunoglobulin G (IgG) antibodies directed against desmosomal adhesion proteins, with IgG4 being the predominant subclass in active diseases. Direct immunofluorescence for IgG performed on fresh-frozen tissue plays a crucial role…
Abstract BACKGROUND: Hailey-Hailey disease (HHD) is a rare hereditary disease in which the genetic defect is characterized by mutation in the ATP2C1 gene coding for a transmembrane calcium pump. It is generally considered a non-immunologic acantholytic dermatosis in which direct…
