Evaluación inmunológica de pacientes con parotiditis recurrente / Immunological assessment of patients with recurrent parotiditis

La parotiditis recurrente se define como una inflamación parotídea, generalmente asociada a una sialectasia no obstructiva glandular. Se realizó un estudio en 74 niños menores de 15 años con diagnñstico de parotiditis recurrente en el período de 2000 a 2007. A cada paciente se le realizó interrogatorio, examen físico y estudio inmunológico mediante cuantificación de inmunoglobulinas séricas M y G, rosetas espontánea y activa e índice opsonofagocítico. La enfermedad afectó de forma similar a los 2 sexos. La edad de presentación de la primera crisis fue alrededor de los 3 años, con un promedio de 7 crisis por niño y una duración de 6 d. El 95,9 por ciento de los pacientes presentó alguna alteración de la respuesta inmune, 41,8 por ciento de células T, 12,2 por ciento de células fagocíticas, y 41,8 por ciento combinadas

Recurrent parotiditis is defined as parotic inflammation that is generally associated to non-obstructive glandular sialectasia. Seventy four children under 15 years of age, diagnosed with recurrent parotiditis from 2000 to 2007, were studied. Each patient was questioned and they also underwent physical exam and immunological study through quantification of serum M and G immunoglobulins, the spontaneous and active rosettes and the opsonocytophagic index. The disease affected males and females in a similar way. The age of onset of the first crisis was 3 years, with an average of 7 crises per child and 6 days of duration. Of these patients, 95.9 percent presented with some disorder in the immune response, that is, 41.8 percent in T-cells, 12.2 percent in phagocytic cells and 41.8 percent combined

Valoración del estado inmunológico en niños con gingivoestomatitis herpética aguda / Assessment of the immunological state in children with acute herpetic gingivostomatitis

Se realizó un estudio en 30 niños atendidos en el Servicio de Cirugía Maxilofacial del Hospital Pediátrico William Soler con el diagnóstico de gingivoestomatitis herpética aguda (GEHA) con el objetivo de conocer su estado de inmunocompetencia celular. La edad promedio fue de 3,7 años; se afectaron ambos sexos por igual, con un promedio de los enfermos de raza blanca sobre los de raza negra. Encontramos el 83 por ciento de los pacientes con algún grado de defecto en los marcadores de inmunidad estudiados (rosetas activa y espontánea), de los cuales 22 mostraron cifras anormalmente bajas en los 2 marcadores y 3 en 1 marcador. Entre los pacientes que presentaron enfermedad de debut, en total 9, hubo 5 con valores dentro de límites normales y los restantes con ambos marcadores afectados. En los casos de recidiva, que fueron 21, el 100 por ciento presentó al menos 1 marcador afectado. Puede considerarse, por lo tanto, el déficit inmunológico celular como factor predisponente o secundario a la infección por herpes simple tipo I(AU)

30 children who received medical attention at the Maxillofacial Surgery Service of William Soler Pediatric Hospital with the diagnosis of acute herpetic gingivostomatitis (AHGS) were studied in order to know their cellular immunocompetence state. Average age was 3.7 years old. Both sexes were affected. A prevalence of white patients was observed. 83 percent of the patients had some degree of defect in the studied immunity markers (active and spontaneous rosettes). 22 of them showed abnormally low figures in the 2 markers, and 3 in only one. 5 of the 9 patients with debut disease had values within the normal limits, whereas the rest had both markers affected. Among the patients with relapse that were 21, 100 %, presented at least one affected marker. herefore, the cellular immunological deficit may be considered as a predisposing or secondary factor to the infection caused by herpex simplex type 1(AU)

Assessment of clonality of rosetting T lymphocytes in Hodgkin's disease by single-cell polymerase chain reaction: detection of clonality in a polyclonal background in a case of lymphocyte predominance Hodgkin's disease.

Rosetting of CD4+ T cells around the neoplastic Hodgkin and Reed-Sternberg (H&RS) cells is a characteristic feature of Hodgkin's disease (HD). To answer the question whether this phenomenon is solely due to chemokine-mediated attraction of T cells or whether the rosetting T cells in addition recognize antigens presented by the H&RS cells, we examined the T cells adherent to H&RS cells. Cells from five cases of HD [four classic HD and one lymphocyte-predominant (LP) HD] were examined by single-cell analysis for the T-cell receptor (TCR) gamma gene. Between 5 and 17 rosettes containing one to ten rosetting lymphocytes and the corresponding H&RS cells were amplified in separate plastic tubes. Of the resulting 119 TCRgamma polymerase chain reaction (PCR) products, 87 were sequenced. While no evidence of a clonal expansion was obtained in the lymph nodes from four of five patients with classic HD, clonal TCRgamma sequences were found in the lymph node from the patient within LPHD in two independent experiments analyzing seven and ten different rosetting complexes, respectively. Of 13 products, 11 showed identical Vgamma9 sequences. Unrelated products were found in all other TCRgamma family subgroups in this case. Single H&RS cells picked as controls were negative for TCRgamma rearrangements. Our results demonstrate that clonal proliferations on a polyclonal background can occur among the T cells forming rosettes with Hodgkin cells and lend support to the view that Hodgkin cells may also function as cells presenting antigens to the adhering T cells.