The lung and the gut: common origins, close links

Because of the common embryologic origin, alteration of the many factors modulating the development of the alimentary and the respiratory tract often results in structural abnormalities involving the two systems. Indeed, some of the most common embryologic disorders of the airways are frequently associated with anomalies of the gastrointestinal tract. Lung growth occurs as a series of tightly regulated events, depending on a number of factors, including developmental, genetic and environment ones. Abnormalities of any of these factors may causes developmental alterations of the lung leading to a group of disorders termed "bronchopulmonary-foregut malformations". These are usually sporadic, solitary cystic hamartomas, involving conducting airways, arteries, venous drainage, and lung parenchyma, which are now often discovered on routine prenatal sonography. While some lesions may be large and cause serious complications in the foetus or newborn, many will be asymptomatic at birth, raising controversy about management: simple observation or surgery and, if so, at what age? Over the past two decades molecular studies have started to shed light on the complex series of events that control proper formation of the lung, with the hope that a better understanding of the molecular basis of pulmonary maturation will allow the design of new therapeutic strategies.

Muscle-sparing thoracotomy combined with mechanically stapled lung resection for benign lung disorders: functional results and quality of life

We set out to review our experience with resection of benign lung lesions performed using mechanical stapling devices via a muscle-sparing thoracotomy, and provide data on long-term morbidity, functional results, and quality of life (QOL). Fifty-two patients with a benign lung disorder were included in the study. All underwent a lung resection with mechanical staplers via a muscle-sparing thoracotomy. Medical records were retrospectively searched for postoperative complications. Nineteen patients (36.5%) also underwent a final follow-up including clinical examination, radiological investigations, functional tests, and assessment of QOL by a standardized questionnaire. No intra-operative complications occurred. The resection was anatomical (lobectomy) in 28 (53%) children and wedge in 25 (47%). Five cases (9.6%) required secondary surgery. Of the 19 children undergoing long-term follow-up, 3 (16%) had musculoskeletal anomalies and 6 (31.5%) respiratory symptoms. All X-rays were normal. Spirometry was abnormal in 9 cases (47.3%). QOL was excellent/good in 17 cases (89.5%) and sufficient in 2 (10.5%). An abnormal spirometric pattern was significantly more frequent in cases with a poorer QOL. In conclusion, stapled resection via a muscle-sparing thoracotomy is a good option to perform lung resections. However, a muscle-sparing approach does not avoid entirely long-term musculoskeletal complications. QOL is good in nearly 90% of cases, but respiratory symptoms and abnormal spirometric function can be found in one third and half of the patients, respectively. An abnormal spirometry is more common in patients with a poorer QOL. Systematic radiological follow-up is unnecessary.

Activity of budesonide on nasal neutrophilic inflammation and obstruction in children with recurrent upper airway infections. A preliminary investigation

OBJECTIVE

While it is widely accepted that inhaled glucocorticosteroids represent an effective treatment for allergic rhinitis, little is known on the specific effects of this therapeutic approach in other upper airway disorders of childhood. The aim of the study was to evaluate the improvement of clinical symptoms and changes in local cellular inflammatory reaction induced by budesonide inhalation suspension in children with recurrent nasal infections using budesonide inhalation suspension delivered by Rinowash, a nebulizer designed to treat upper airway structures.

METHODS

In a randomized, controlled-open study, 14 children (5.88+/-0.56 years of age) with recurrent upper airway infections and chronic nasal obstruction were enrolled and randomly treated for 7-10 days either with budesonide inhalation suspension (250 microg/bidie) (nine patients) or with saline solution (five patients). Before and after treatment, inflammatory cells in nasal brushing and nasal symptom score were evaluated.

RESULTS

Out of the nine patients treated with budesonide, two were excluded from the analysis because of acute respiratory infections requiring systemic antibiotic treatment. A significant decrease in nasal brushing neutrophil percentage was observed after treatment with budesonide (P=0.016) but not after saline solution treatment (P=1.00). No significant changes in nasal brushing mononuclear cell or eosinophil proportions were observed after treatment with budesonide inhalation suspension or saline solution (P=NS, each comparison). Treatment with budesonide, but not with saline solution, was associated with a significant reduction in nasal obstruction (P=0.016).

CONCLUSIONS

These preliminary data indicate that short-term treatment with budesonide inhalation suspension, used for an indication out of label, may significantly reduce local neutrophilic inflammation and nasal obstruction in children with recurrent upper airway infections.