ABSTRACT
Several mature Leghorn-type hens with the same genetic background experienced skin and feather problems in a breeder flock. There was almost-total feather loss on the head and neck, as well as thickened, scaly skin, and follicular ostia were plugged with keratin debris. Other individuals exhibited prominent subcutaneous nodules multifocally on the head. Histologic examination of the skin revealed a severe hyperplasia of follicular epithelium with hyperkeratosis and cystic dilation. Numerous clefts and vesicles were detected along the epidermis and follicular epithelium, some containing acantholytic keratinocytes. A mild heterophilic inflammation was associated with these lesions, and few gram-positive cocci were present in the keratin plugs. Bacterial culture of the skin yielded a variable amount of Staphylococcus hyicus. Immunochemistry looking for chicken IgY revealed no intercellular staining in the epidermis or follicular epithelium. All these findings supported a diagnosis of Staphylococcus-associated acantholytic epidermitis and folliculitis. This case suggests that S. hyicus could be a significant pathogen in poultry production. The close genetic relationship among affected individuals could indicate a hereditary predisposition in this line of White Leghorn laying chickens.
Subject(s)
Acantholysis/veterinary , Chickens , Folliculitis/veterinary , Poultry Diseases/microbiology , Staphylococcal Infections/veterinary , Staphylococcus hyicus/isolation & purification , Acantholysis/diagnosis , Acantholysis/microbiology , Animals , Epidermis/microbiology , Epidermis/pathology , Feathers/microbiology , Feathers/pathology , Female , Folliculitis/diagnosis , Folliculitis/microbiology , Poultry Diseases/diagnosis , Staphylococcal Infections/complicationsABSTRACT
La acantólisis consiste en la pérdida de conexión entre los queratinocitos de la epidermis como resultado de la destrucción de los desmosomas intercelulares que conlleva a la formación de hendiduras y vesículas intraepidérmicas. La acantólisis aparece clásicamente en la enfermedad de Hailey-Hailey, la enfermedad de Darier, la dermatitis acantolítica transitoria, el grupo de los pénfigos, la infección por herpesvirus o el disqueratoma verrucoso. Además puede ocurrir en el síndrome estafilocócico de la piel escaldada, el impétigo, la queratosis actínica acantolítica o el carcinoma epidermoide acantolítico. Por último, la acantólisis también puede ser un hallazgo incidental. Se ha descrito en multitud de trastornos epiteliales benignos y malignos, lesiones fibrohistiocitarias, lesiones melanocíticas y lesiones inflamatorias. Estos cambios histopatológicos pueden aparecer tanto dentro de la lesión como sobre la piel sana adyacente. La causa de este hallazgo incidental permanece desconocida
Acantholysis is the loss of cohesión between keratinocytes as a result of dissolution of intercellular desmosomal connections, resulting in clefts or intraepidermal vesicles. Acantholysis occurs classically in Hailey-Haileys disease, Darier´s disease, transient acantholytic dermatitis, group of penphigus, herpesvirus infection or warthy dysqueratoma. But acantholysis may also occurs in staphylococcal scalded skin syndrome, impetigo, acantholitic actinic keratosis, acantholytic squamous cell carcinoma or being an incidental finding or artifact. Focal incidental acantholysis has been noted as an incidental finding in association with bening and malignant epithelial lesions, fibrohistiocytic lesions, inflammatory lesions, melanocytic lesions and miscellaneous lesions. The pathologic changes either are observed within the lesion or in the immediately adjacent epithelium. The cause of this clinically condition remains to be determined
Subject(s)
Humans , Acantholysis/pathology , Acantholysis/complications , Acantholysis/microbiology , Acantholysis/classificationABSTRACT
El pénfigo vulgar es una enfermedad auto-inmune ampollosa, muco cutánea, de carácter crónico, donde las lesiones de la mucosa bucal pueden anteceder las lesiones cutáneas. Así, el odontólogo asume papel importante en la identificación de las lesiones, debiendo realizar el diagnóstico por la historia clínica i exámenes complementares adecuados. Este artículo relata un caso de pénfigo vulgar acometiendo un paciente del sexo masculino,47 años, con lesiones en la mucosa bucal y piel (AU)
Pemphigus vulgaris is an autoimmune blistering disease, mucocutaneous, chronic, where the lesions in the mouth; mucosa usually precede the skin lesions. Thus, the dentist has an important role in identifying the lesions, and the ;;diagnosis must be done through an adequate clinical history and complementary exams. This article reports a case of pemphigus vulgaris in a male patient, 47, suffering from lesions in the skin and mouth mucosa (AU)
