RESUMEN
BACKGROUND: One cause of chronic urticaria is autoreactivity which is diagnosed by detecting autoantibodies against the IgE receptor alpha subunit (anti-Fc R1alpha). OBJECTIVE: To compare the histopathologic features of chronic urticaria patients testing positive for anti-IgE receptor antibody (Ab) to those testing negative. METHODS: Totally, 438 patients with a clinical presentation of chronic urticaria (2011-2013) had anti-IgE receptor Ab tested and 37 of those patients had skin biopsy. We evaluated microscopic features including: spongiosis, dermal edema, presence of mast cells, density of lymphocytic infiltration, predomination of eosinophils/neutrophils; intravascular neutrophils and presence of vasculitis. The aforementioned features were compared between negative and positive anti-IgE receptor Ab groups. RESULTS: Of 37 patients , 69% were women and 31% were men. 49% had positive anti-IgE receptor Ab and 51% had negative anti-IgE receptor Ab. In the positive anti-IgE receptor Ab group, 83% showed intravascular neutrophils. Eosinophil predominance was identified in 72% and neutrophil predominance was identified in 28%. In the negative anti-IgE receptor Ab group, 89% showed intravascular neutrophils. Eosinophil predominance was identified in 53% and neutrophil predominance was identified in 47%. There was no evidence of vasculitis in either group. CONCLUSION: There were no significant histopathologic differences between the anti-IgE receptor Ab positive and negative cases. Therefore, serum testing for anti-IgE receptor Ab is required to identify this subgroup of chronic urticaria patients.
Asunto(s)
Anticuerpos Antiidiotipos/inmunología , Autoanticuerpos/inmunología , Receptores de IgE/inmunología , Urticaria/inmunología , Urticaria/patología , Adulto , Enfermedades Autoinmunes/inmunología , Enfermedades Autoinmunes/patología , Enfermedad Crónica , Eosinófilos/inmunología , Femenino , Humanos , Masculino , Mastocitos/inmunología , Mastocitos/patología , Persona de Mediana Edad , Neutrófilos/inmunología , Piel/patologíaRESUMEN
Mastocytosis refers to a group of disorders characterized by the pathologic proliferation of mast cells. We present a 70-year-old white man with a rare presentation of nodular mastocytosis, characterized by disseminated nodular lesions, myelodysplastic syndrome, and a c-kit V560G receptor mutation. The patient presented to the clinic after initial presentation 6 months earlier, with ear pruritus, associated hearing loss, and widespread rash.
Asunto(s)
Mastocitosis Cutánea/patología , Síndromes Mielodisplásicos/patología , Proteínas Proto-Oncogénicas c-kit/genética , Anciano , Oído/patología , Pérdida Auditiva , Humanos , Masculino , Mastocitosis Cutánea/genética , Mutación , Síndromes Mielodisplásicos/genética , PruritoRESUMEN
This study described sleep in a heterogeneous sample of breast cancer patients using the Pittsburgh Sleep Quality Index (PSQI) and examined the relation between sleep disturbance and health-related quality of life as measured by the Rand 36-Item Health Survey. Chemotherapy and radiation therapy were explored as predictors of sleep disturbance in breast cancer patients, and the sleep characteristics of breast cancer patients were compared to the sleep characteristics of a sample of medical patients with general medical conditions. Results showed that 61% of breast cancer patients had significant sleep problems. Sleep was characterized by reduced total sleep time with sleep frequently being disturbed by pain, nocturia, feeling too hot, and coughing or snoring loudly. Despite the frequency of significant sleep disturbance, pharmacological and cognitive-behavioral treatments of sleep problems were observed to be inadequate. Limited evidence was found for the role of chemotherapy and radiation therapy in the sleep disturbance of breast cancer patients, and the general pattern of sleep disturbance in breast cancer patients was not significantly different than that observed in medical patients with general medical conditions. Breast cancer patients having significant sleep problems had greater deficits in many areas of health-related quality of life. The implications of the findings and study limitations are discussed.