ABSTRACT
BACKGROUND: House dust contains mite allergens as well as bacterial products such as lipopolysaccharide (LPS). Asthma exacerbations are associated with the level of exposure to allergens and LPS. LPS can potentiate allergen effects in steroid-naïve patients. Long-acting ß2-agonists (LABA) were shown to inhibit LPS-induced bronchial inflammation in healthy volunteers. The aim of this study was to assess the effect of LPS on the allergen-induced eosinophilic inflammation [primary endpoints: eosinophil counts and eosinophil cationic protein (ECP)] induced by bronchial instillation of house dust mite (HDM) in patients with asthma on maintenance treatment with inhaled corticosteroids (ICS). METHODS: Thirty-two nonsmoking asthmatics with HDM allergy were treated with run-in medication (fluticasone propionate 100 µg bid) during 2 weeks before the study day. All patients underwent bronchial challenge with HDM, and half of them were randomized to receive additional LPS. Both groups were randomized to receive pretreatment with a single inhalation of 100 µg salmeterol 30 min before bronchial segmental challenge. Six hours later, bronchoalveolar lavage (BAL) was collected for leukocyte cell count, differentials, and cellular activation markers. RESULTS: Challenge with HDM/LPS induced a significant increase in eosinophil cationic protein (P = 0.036) and a trend toward an increase in BALF eosinophils as compared to HDM challenge. CONCLUSION: Lipopolysaccharide promotes eosinophilic airway inflammation in patients with asthma despite being on maintenance treatment with ICS.
Subject(s)
Allergens/immunology , Asthma/immunology , Eosinophils/immunology , Inflammation/immunology , Lipopolysaccharides/immunology , Pyroglyphidae/immunology , Administration, Inhalation , Adrenal Cortex Hormones/administration & dosage , Adult , Animals , Asthma/diagnosis , Asthma/drug therapy , Bronchodilator Agents/administration & dosage , Eosinophils/metabolism , Female , Humans , Inflammation/drug therapy , Male , Treatment Outcome , Young AdultABSTRACT
BACKGROUND: In African settings the treatment results of Burkitt's lymphoma (BL) seem to be less favourable compared with Western settings. The aim of this retrospective study was to analyse some factors that affect the treatment of BL. PATIENTS AND METHODS: Over a 16 year period, data were extracted of 80 patients. RESULTS: Complete remission 5%, very good partial response 35%, partial response 16%, no response 10%, data missing 34%. Of all patients, 56% did have a positive response to treatment. However, 51% of this subgroup of patients did not finish treatment. There was no difference in completion of treatment between patients living in Katete district finishing treatment vs. living outside Katete district (respectively 25% vs. 32%, P = 0.7148). CONCLUSION: There is potential for higher cure rates for BL in tropical settings if full effort is put into compliance since a majority of patients, even while having a good prognosis, abandon treatment. Large distance to hospital makes no difference in completing the chemotherapy course.
Subject(s)
Antineoplastic Agents/therapeutic use , Burkitt Lymphoma/drug therapy , Health Services Accessibility , Patient Compliance , Adolescent , Adult , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Retrospective Studies , Rural Population , Treatment Outcome , ZambiaABSTRACT
Background : In African settings the treatment results of Burkitt's lymphoma (BL) seem to be less favourable compared with Western settings. The aim of this retrospective study was to analyse some factors that affect the treatment of BL. Patients and Methods : Over a 16 year period; data were extracted of 80 patients. Results : Complete remission 5; very good partial response 35; partial response 16; no response 10; data missing 34. Of all patients; 56did have a positive response to treatment. However; 51of this subgroup of patients did not finish treatment. There was no difference in completion of treatment between patients living in Katete district finishing treatment vs. living outside Katete district (respectively 25vs. 32; P = 0.7148). Conclusion: There is potential for higher cure rates for BL in tropical settings if full effort is put into compliance since a majority of patients; even while having a good prognosis; abandon treatment. Large distance to hospital makes no difference in completing the chemotherapy course
