Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Ciramadol, an agonist-antagonist analgesic of lesser milligram potency than morphine, given intravenously at 30 mg/70 kg produced respiratory depression equivalent to that observed with morphine 10 mg/70 kg. Respiratory depression was measured in terms of drug induced displacement of the carbon dioxide response curve of healthy volunteers. In contrast to the progressive respiratory depression by each 10 mg/70 kg increment of morphine, further doses of ciramadol up to 90 mg/70 kg failed to increase respiratory depression. The ceiling of respiratory depression by ciramadol was half the ceiling previously demonstrated for nalbuphine and dezocine. Ceiling respiratory depression may be a general characteristic of agonist-antagonist type analgesics in contrast to pure agonist analgesics.
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PMID:Low ceiling respiratory depression by ciramadol. 310 Apr 62

The effects of bolus and infusion of ciramadol, dezocine, morphine and pentazocine were examined in anesthetized dogs. Cardiopulmonary parameters, blood PCO2, PO2 and pH and plasma histamine determinations were made. Ciramadol (2 and 8 mg/kg) did not exhibit any major activity. Dezocine produced slight respiratory depression at 2 mg/kg but no cardiopulmonary effects were observed at this dose. At 8 mg/kg there were also reductions in pulmonary compliance (Cdyn) and resistance (RL), tidal volume (VT) and a marked arterial hypotension. Morphine (2 mg/kg) elicited significant effects on all parameters examined: marked bronchoconstriction, increased arterial PCO2 and pH and corresponding decrease in PO2, slight increase in heart rate and dramatic arterial hypotension. Morphine was the only agent studied to elevate plasma histamine. Histamine (0.015 mg/kg) mimicked the cardiopulmonary actions of morphine but was virtually devoid of effect on blood gases and pH. Pentazocine (8 mg/kg) did not produce bronchoconstriction but did increase VT and reduce respiratory frequency. It produced increases in arterial PCO2 and reductions in pH and PO2. There was a slight bradycardia and hypotension within this dose. These results demonstrate that both ciramadol and dezocine possess less potential than either morphine or pentazocine for producing bronchoconstriction, respiratory depression, hypotension and histamine release.
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PMID:A comparison of the cardiorespiratory effects of ciramadol, dezocine, morphine and pentazocine in the anesthetized dog. 611 23

One hundred and eighty patients (American Society of Anesthesiologists rating 1-2) received one of three oral analgesics--ciramadol (Wy. 15705) 20 mg, ciramadol 60 mg or codeine 60 mg--on a double-blind random basis for the relief of pain 24-48 hours after major general surgical, gynaecological or orthopaedic operations. All three analgesics proved equally effective and caused mild sedation only. No patient showed signs of clinical cardiorespiratory depression, and other side-effects were infrequent. Ciramadol may therefore prove a useful clinical alternative to conventional oral analgesics provided its lack of respiratory depressant properties and addiction potential in monkeys can be substantiated in humans.
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PMID:Ciramadol--a new synthetic analgesic. A double-blind comparison with oral codeine for postoperative pain relief. 635 86