SO2-induced bronchopathy decreases airway sensitization with intratracheal ovalbumin in the rat.

We investigated in this study the effect of SO2-induced bronchopathy on airway sensitization to ovalbumin in the rat. Sprague-Dawley rats were immunized with a single intratracheal injection of ovalbumin (OA) 100 micrograms in 0.1 ml PBS or 0.

[Retrospective study of 77 cases of purulent pleurisy].

77 cases of non-tuberculous empyema were studied retrospectively. The data of past history, laboratory, radiological, bacteriological and outcome were gathered. The mean delay between initial symptoms and clinical diagnosis was 2.

Suppression of bronchoalveolar lymphocyte antibody secretion by alveolar macrophage: an in vitro study in the rabbit.

The effect of rabbit alveolar macrophage (AM) on the antibody secretion of bronchoalveolar lymphocytes was investigated in vitro, using a plaque-forming cell assay. Animals were intratracheally primed and reimmunized with 10(10) sheep red blood cells (SRBC). Free alveolar cells were obtained by lung lavage and broncho-alveolar lymphocyte-enrichment was achieved through Sephadex G-10 columns.

[Atelectasis caused by lung folding].

An atypical disturbance of ventilation supervening a pleural effusion may occur due to atelectasis by lung folding which is seen radiologically as a round image close to the chest wall with the appearance of a pseudo-tumour. The authors review the mechanisms and the clinical and radiological presentation of this disorder based on 7 cases and a review of the literature. The posterior basal type with adhesions to the chest wall are the most frequent.

Immunologic competence of the bronchi in the rabbit: the IgA-mediated plaque-forming response to intratracheally injected sheep erythrocytes.

Immune responses to intratracheally injected sheep erythrocytes in rabbits were investigated in bronchi, thoracic lymph nodes (TLN), mesenteric lymph nodes (MLN) and spleen using an IgA-mediated haemolytic plaque-assay. The time-course appearance of specific IgA antibody forming cells (IgA-AFC) was studied in each tissue after primary and secondary immunizations. Overall low splenic and MLN responses suggest weak systemic and intestinal immunizations, respectively.