Effect of recombinant neutral endopeptidase (EC 3.4.24.11) on neuropeptide-mediated nasal fluid secretion and plasma exudation in the rat.

The nasal mucosa harbors sensory nerves containing neuropeptides such as substance P (SP), which are released by capsaicin. The neuropeptides are degraded by peptidases, e.g.

Influence of azelastine and some selected drugs on mucociliary clearance.

The effect of azelastine and some selected compounds on ciliary beating frequency (CBF) was investigated in vitro using human mucosal samples and in vivo using anesthetized guinea pigs. Further influence of azelastine on mucus secretion was evaluated in mice and on mucociliary clearance in anesthetized rabbits. Azelastine influenced the ciliary beating frequency neither in vitro nor in vivo.

Protective property of azelastine against histamine challenge of rhinal mucosa in domestic pigs.

In anaesthetized domestic pigs a filter paper sampling technique was applied to estimate basal and histamine induced nasal secretion. Histamine (0.2 mg/nostril) increased secretion more than twofold, a dose of 2 mg/nostril more than 10 fold.

Influence of various adrenergic compounds on plasma potassium levels in conscious dogs and anaesthetized domestic pigs.

The influence of various compounds with affinity to beta-adrenoceptors on plasma potassium levels was investigated in conscious dogs and anaesthetized pigs. There was a marked fall, amounting to about 1 mmol/l following salbutamol and pirbuterol but nearly no effect following dobutamine and xamoterol. In dogs the hypokalaemic effect of salbutamol was augmented when prazosin was additionally applied.

Effects of the novel beta-adrenergic partial agonist alifedrine on cardiac performance in dogs with acute ischemic left ventricular failure.

Acute ischemic left ventricular failure was induced in dogs by coronary embolization with plastic microspheres, resulting in reduced cardiac output (CO), increased left ventricular end-diastolic pressure (LVEDP), pulmonary capillary pressure (PCP), and total peripheral resistance (TPR). Intravenous (i.v.

Young domestic pigs for the cardiovascular assessment of inotropic drugs. Comparison with dogs.

A comparison is made of cardiovascular response to cardiotonic drugs in young domestic pigs and dogs, and the use of pigs as an alternative to dogs in cardiovascular investigations is described.

[General pharmacologic studies on the analgesic flupirtine].

In the present study the general pharmacological properties of ethyl-N-[2-amino-6-(4-fluor-phenylmethylamino)pyridin-3-yl]carbama te (flupirtine, D 9998), a structural new analgesic, are described. In several tests with mice flupirtine shows a centrally depressant component of action. However, regarding undesirable side effects as ataxia, inhibition of motor activity etc.

[The pharmacology of a new cardiosteroid, a partially synthetic derivative of the aglycone hellebrigenin (acrihellin)].

3 beta,5,14-Trihydroxy-19-oxo-5 beta-bufa-20,22-dienolide 3-(3-methylcrotonate) (acrihellin, D 12 316) is according to chemical structure and pharmacological effects a semisynthetic compound of the aglycon hellebrigenin. It is characterized as a cardiosteroid. In isolated organ (Langendorff heart) the positive inotropic effect proved to be stronger in comparison to digoxin.

[Investigations on the general effects of tinofedrine on heart and blood circulation (author's transl)].

In anesthetized dogs, (+)-(R)-alpha ((S)-1-[(3,3-di-3-thienylallyl)amino]-ethyl)-benzylalcohol hydrochloride (tinofedrine hydrochloride, D 8955) causes a remarkable increase of cardiac output by positive inotropic and chronotropic stimulation of the heart and simultaneous reduction of peripheral vascular resistance. The effect is antagonized by beta-adrenergic blocking drugs. In comparison with typical beta-agonists (e.

[Pharmacological effect of tinofedrine on cerebral and peripheral hemodynamics in the dog (author's transl)].

l-(+)-alpha-(1-[(3,3-Di-3-thienylallyl)amino]-ethyl)-benzyl alcohol hydrochloride (Tinofedrine, D 8955, Novocebrin), a new drug, synthetized in our research laboratories, has been tested in dogs with regard to the improvement of cerebral and peripheral blood flow. Direct electromagnetic flow measurement at the vertebral artery as well as 133xenon wash-out method showed a strong and long-lasting increase of cerebral and femoral blood flow following intravenous as well as oral administration. No decrease of activity was observed after repeated intravenous application.

[Compound with bronchospasmolytical activity from the chemical class of beta-phenylethyl-aminoalkyl-xanthines (author's transl)].

1. 7-(3-[2-(3,5-Dihydroxyphenyl)-2-hydroxy-ethylamino]-propyl)-theophylline (reproterol, D 1959, Bronchospasmin) was developed as a bronchospasmolytic agent from the structure class of the phenylethyl-aminoalkyl-xanthines. 2.