Biomaterial Database

Effects of dilazep on fibrinolytic system in animals. II. Enhancing effect of dilazep on plasminogen activator release in the isolated perfused pig ear. 1982

K Nakajima

The influence of drugs on the release of plasminogen activator was studied in the isolated perfused pig ear. The pig ear was perfused with oxygenated Tyrode's solution pH 7 . 4, at 37 degrees C via main artery and perfusate from the veins was collected at 2 min intervals. The drug was injected into a rubber tube connected in the front of arteria cannula, and the fibrinolytic activity of perfusate collected was measured by the fibrin plate method using plasminogen-containing bovine fibrinogen. Under the test condition, dilazep enhanced plasminogen activator release (PA release) in a dose-dependent fashion ranging 10 to 100 microgram, however, it did not affect the perfusion pressure. Hypotensors, namely acetylcholine (0.1-3 microgram), bradykinin (0.1-3 microgram) and histamine (0.1-3 microgram) enhanced also the PA release in a dose-dependent fashion with no effects on perfusion pressure. Vasoconstricting drugs, namely phenylephrine (0.3-10 microgram), norepinephrine (0.1-3 microgram) and serotonin (0.1-3 microgram) exerted hypertensive effects on perfusion pressure in a dose-dependent fashion, however, it did not cause the PA release.

UI	MeSH Term	Description	Entries
D010960	Plasminogen Activators	A heterogeneous group of proteolytic enzymes that convert PLASMINOGEN to FIBRINOLYSIN. They are concentrated in the lysosomes of most cells and in the vascular endothelium, particularly in the vessels of the microcirculation.	Extrinsic Plasminogen Activators,Plasminogen Activator,Uterine-Tissue Plasminogen Activator,Uterine Tissue Plasminogen Activator
D001920	Bradykinin	A nonapeptide messenger that is enzymatically produced from KALLIDIN in the blood where it is a potent but short-lived agent of arteriolar dilation and increased capillary permeability. Bradykinin is also released from MAST CELLS during asthma attacks, from gut walls as a gastrointestinal vasodilator, from damaged tissues as a pain signal, and may be a neurotransmitter.	Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg,Bradykinin Acetate, (9-D-Arg)-Isomer,Bradykinin Diacetate,Bradykinin Hydrochloride,Bradykinin Triacetate,Bradykinin, (1-D-Arg)-Isomer,Bradykinin, (2-D-Pro)-Isomer,Bradykinin, (2-D-Pro-3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (2-D-Pro-7-D-Pro)-Isomer,Bradykinin, (3-D-Pro)-Isomer,Bradykinin, (3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (5-D-Phe)-Isomer,Bradykinin, (5-D-Phe-8-D-Phe)-Isomer,Bradykinin, (6-D-Ser)-Isomer,Bradykinin, (7-D-Pro)-Isomer,Bradykinin, (8-D-Phe)-Isomer,Bradykinin, (9-D-Arg)-Isomer,Arg Pro Pro Gly Phe Ser Pro Phe Arg
D004109	Dilazep	Coronary vasodilator with some antiarrhythmic activity.	Asta C 4898,Biopropazepan Trimethoxybenzoate,Cormelian,C 4898, Asta,Trimethoxybenzoate, Biopropazepan
D004176	Dipyridamole	A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752)	Antistenocardin,Apo-Dipyridamole,Cerebrovase,Cléridium,Curantil,Curantyl,Dipyramidole,Kurantil,Miosen,Novo-Dipiradol,Persantin,Persantine,Apo Dipyridamole,Novo Dipiradol
D004431	Ear, External	The outer part of the hearing system of the body. It includes the shell-like EAR AURICLE which collects sound, and the EXTERNAL EAR CANAL, the TYMPANIC MEMBRANE, and the EXTERNAL EAR CARTILAGES.	External Ear,Outer Ear,Ear, Outer,Ears, External,Ears, Outer,External Ears,Outer Ears
D005342	Fibrinolysis	The natural enzymatic dissolution of FIBRIN.	Fibrinolyses
D006632	Histamine	An amine derived by enzymatic decarboxylation of HISTIDINE. It is a powerful stimulant of gastric secretion, a constrictor of bronchial smooth muscle, a vasodilator, and also a centrally acting neurotransmitter.	Ceplene,Histamine Dihydrochloride,Histamine Hydrochloride,Peremin
D000109	Acetylcholine	A neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.	2-(Acetyloxy)-N,N,N-trimethylethanaminium,Acetilcolina Cusi,Acetylcholine Bromide,Acetylcholine Chloride,Acetylcholine Fluoride,Acetylcholine Hydroxide,Acetylcholine Iodide,Acetylcholine L-Tartrate,Acetylcholine Perchlorate,Acetylcholine Picrate,Acetylcholine Picrate (1:1),Acetylcholine Sulfate (1:1),Bromoacetylcholine,Chloroacetylcholine,Miochol,Acetylcholine L Tartrate,Bromide, Acetylcholine,Cusi, Acetilcolina,Fluoride, Acetylcholine,Hydroxide, Acetylcholine,Iodide, Acetylcholine,L-Tartrate, Acetylcholine,Perchlorate, Acetylcholine
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001381	Azepines	Seven membered heterocyclic rings containing a NITROGEN atom.	Hexamethyleneimines