Bradykinin B1 and B2 receptor antagonists do not change the ongoing activity of slowly conducting articular afferents in the inflamed knee joint of the cat. 1993

K Messlinger, and K Schepelmann, and M Pawlak, and R F Schmidt
Physiologisches Institut, Universität Würzburg, Germany.

Arthritic hyperalgesia and pain result from an increased activity of nociceptive afferents that may be induced and maintained by inflammatory mediators like bradykinin (BK). The B1 receptor antagonist des-Arg9-Leu8-BK and the B2 receptor antagonists Thi5,8-D-Phe7-BK and Hoe 140 were used to study the involvement of BK receptors in the generation of ongoing afferent activity in the cat's knee joint that was inflamed by kaolin and carrageenin. After i.a. bolus administration of BK receptor antagonists (26-260 micrograms) close to the joint, the ongoing activity did not significantly vary in any group III or group IV unit. We conclude that activation of BK receptors by endogenous BK is probably not the mechanism that is responsible for the increased ongoing activity of articular afferents in the inflamed joint.

UI MeSH Term Description Entries
D009431 Neural Conduction The propagation of the NERVE IMPULSE along the nerve away from the site of an excitation stimulus. Nerve Conduction,Conduction, Nerve,Conduction, Neural,Conductions, Nerve,Conductions, Neural,Nerve Conductions,Neural Conductions
D009475 Neurons, Afferent Neurons which conduct NERVE IMPULSES to the CENTRAL NERVOUS SYSTEM. Afferent Neurons,Afferent Neuron,Neuron, Afferent
D009619 Nociceptors Peripheral AFFERENT NEURONS which are sensitive to injuries or pain, usually caused by extreme thermal exposures, mechanical forces, or other noxious stimuli. Their cell bodies reside in the DORSAL ROOT GANGLIA. Their peripheral terminals (NERVE ENDINGS) innervate target tissues and transduce noxious stimuli via axons to the CENTRAL NERVOUS SYSTEM. Pain Receptors,Receptors, Pain,Nociceptive Neurons,Neuron, Nociceptive,Neurons, Nociceptive,Nociceptive Neuron,Nociceptor,Pain Receptor
D011189 Potassium Chloride A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA. Slow-K,Chloride, Potassium
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
D002415 Cats The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801) Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D006614 Hindlimb Either of two extremities of four-footed non-primate land animals. It usually consists of a FEMUR; TIBIA; and FIBULA; tarsals; METATARSALS; and TOES. (From Storer et al., General Zoology, 6th ed, p73) Hindlimbs
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
D001169 Arthritis, Experimental ARTHRITIS that is induced in experimental animals. Immunological methods and infectious agents can be used to develop experimental arthritis models. These methods include injections of stimulators of the immune response, such as an adjuvant (ADJUVANTS, IMMUNOLOGIC) or COLLAGEN. Adjuvant Arthritis,Arthritis, Adjuvant-Induced,Arthritis, Collagen-Induced,Arthritis, Adjuvant,Collagen Arthritis,Arthritides, Collagen,Arthritis, Collagen,Collagen Arthritides,Collagen-Induced Arthritides,Collagen-Induced Arthritis
D065168 Bradykinin Receptor Antagonists Compounds and drugs that inhibit ligand binding or cellular signaling by BRADYKININ RECEPTORS. Bradykinin Antagonist,Bradykinin Receptor Antagonist,Bradykinin Receptor Blocker,Bradykinin Receptor Inhibitor,Bradykinin Antagonists,Bradykinin Receptor Blockers,Bradykinin Receptor Inhibitors,Antagonist, Bradykinin,Antagonist, Bradykinin Receptor,Antagonists, Bradykinin,Antagonists, Bradykinin Receptor,Blocker, Bradykinin Receptor,Inhibitor, Bradykinin Receptor,Inhibitors, Bradykinin Receptor,Receptor Antagonist, Bradykinin,Receptor Antagonists, Bradykinin,Receptor Blocker, Bradykinin,Receptor Blockers, Bradykinin,Receptor Inhibitor, Bradykinin,Receptor Inhibitors, Bradykinin

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