Varicose vein stripping--a prospective study of the thrombotic risk and the diagnostic significance of preoperative color coded duplex sonography.

Insufficiency of epifascial veins promotes venous ulceration and increases thromboembolic risk in general surgery patients. Epifascial varicose vein stripping is therefore considered the most effective prophylactic procedure. Thromboembolic risk of patients undergoing this surgical procedure has not yet been prospectively evaluated but appears to be lower than in general surgery patients.

Ultrastructural localization of microtubule-associated proteins (MAP) 1 in cilia of the respiratory tract.

The presence and localization of high molecular weight microtubule-associated proteins of the MAP 1 class in ciliated cells of porcine and rat respiratory tract was studied by immunoblotting and immunoelectron microscopy. Ciliary shafts of the porcine tracheal epithelium were isolated using a method that minimizes contamination of the preparation by other cellular fragments and fat. Immunoblotting with rabbit antibodies to bulk MAP 1 from hog brain clearly revealed the presence of anti-MAP 1-immunoreactive high molecular weight proteins of the MAP 1 size in these preparations.

Pathophysiology of the ciliated epithelium of the respiratory mucosa in humans. Disorders of ciliogenesis.

If we want to interpret morphological alterations of the ciliated epithelium of the respiratory tract, we have to consider the physiological differentiation of ciliated cells and cilia. For this, we suggest a system in which disorders are distinguished at three distinct arrest levels of the ciliary development: (1) Disorders in the production of procentrioles (secondary centrioles) lead to partial or total aplasia of the ciliary apparatus. (2) Disorders in the development of kinetosomes from secondary centrioles result in a reduced number of cilia and malformations of ciliary components.