Cutaneous plasmacytosis with mast cell infiltration.

Cutaneous plasmacytosis is a rare disorder of uncertain etiology, described mainly in patients of Japanese descent. Clinically, it is characterized by multiple pigmented papules and plaques distributed primarily on the trunk. Histopathologically, it is marked by a dense dermal plasma cell infiltrate.

Management of large radicular cyst by conservative surgical approach: a case report.

Radicular cysts are the most common cystic lesions which affect the jaw. They are most common among all the jaw cysts and comprise about 52% to 68% of the entire cysts which affect the human jaw. They are generally symptomless and are diagnosed during routine radiologic investigations.

Effects of vasoconstrictors on isolated rabbit coronary arteries exposed to isotonic iohexol. Potassium chloride-, histamine-, endothelin-, and prostaglandin-F2 alpha-induced contractions on arteries exposed to iohexol without and with osmotic additions (sodium chloride or glucose).

Rationale And Objectives: A major effect of contrast media (CM) on coronary vessels is vasodilatation, but occasionally, both ionic and nonionic media may cause coronary artery spasm. The influence of CM on the actions of vasoactive substances is not well known. To investigate the effects on rabbit coronary arteries of an iso-osmolar nonionic CM, iohexol (140 mg I/mL) the vasoconstrictors potassium chloride (KCl), histamine, endothelin, and prostaglandin-F2 alpha (PGF2 alpha) were used.

Intravenous injection of Albunex microspheres causes thromboxane mediated pulmonary hypertension in pigs, but not in monkeys or rabbits.

Intravenous injection of the ultrasound contrast agent Albunex (manufactured by Nycomed AS, Oslo, Norway; 400 million air-filled albumin microspheres per ml, mean diameter 4 +/- 1 microns) caused a dose-dependent increase of mean pulmonary arterial pressure in nine pigs. The highest dose (0.014 +/- 0.

Calcium ionophore-activated neutrophils prestimulated with endotoxin increase pulmonary arterial pressure and vascular leakage in isolated perfused rat lungs: role of platelet-activating factor.

The influence of stimulated polymorphonuclear neutrophils on pulmonary arterial pressure and vascular leakage in isolated perfused rat lungs was investigated. We exposed isolated neutrophils to various stimuli in vitro, instilled the cells in the lung perfusate, and studied the effects on pulmonary arterial pressure and passage of fluorescently labeled dextran (4100 dalton) from the pulmonary circulation into the lung. We found that neutrophils stimulated with the calcium ionophore A23187 or with E.