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Evaluation of <scp>KP</scp> ‐1199: a novel acetaminophen analog for hemostatic function and antinociceptive effects
- Source :
- Transfusion. 61
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- BACKGROUND: Acetaminophen (APAP) is a widely self-prescribed analgesic for mild to moderate pain, but overdose or repeat doses can lead to liver injury and death. Kalyra Pharmaceuticals has developed a novel APAP analog, KP-1199, currently in Phase 1 clinical studies, which lacks hepatotoxicity. In this study, the authors evaluated the antinociceptive effect of KP-1199 on thermal injury-induced nociceptive behaviors as well as hemostatic parameters using human blood samples. METHODS: Full-thickness thermal injury was induced in anesthetized adult male Sprague-Dawley rats. On day 7 post-injury, KP-1199 (30 and 60 mg/kg) or APAP (60 mg/kg) was administered orally. Antinociception of KP-1199 and APAP were assessed at multiple time points using Hargreaves' test. In separate experiments, human whole blood was collected and treated with either KP-1199, APAP, or Vehicle (citrate buffer) at 1× (214 µg/ml) and 10× (2140 µg/ml) concentrations. The treated blood samples were assessed for: clotting function, thrombin generation, and platelet activation. RESULTS: APAP did not produce antinociceptive activity. KP-1199 treatment significantly increased the nociceptive threshold, and the antinociceptive activity persisted up to 3 h post-treatment. In human samples, 10× APAP caused significantly prolonged clotting times and increased platelet activation, whereas KP-1199 had caused no negative effects on either parameter tested. CONCLUSION: These results suggest that KP-1199 possesses antinociceptive activity in a rat model of thermal injury. Since KP-1199 does not induce platelet activation or inhibit coagulation, it presents an attractive alternative to APAP for analgesia, especially for battlefield or surgical scenarios where blood loss and blood clotting are of concern.
- Subjects :
- Male
Immunology
Analgesic
Administration, Oral
Pharmacology
Rats, Sprague-Dawley
Animals
Humans
Immunology and Allergy
Medicine
Platelet activation
Hemostatic function
Acetaminophen
Whole blood
Liver injury
Analgesics
Hemostasis
business.industry
digestive, oral, and skin physiology
Hematology
medicine.disease
Nociception
Hyperalgesia
business
medicine.drug
Subjects
Details
- ISSN :
- 15372995 and 00411132
- Volume :
- 61
- Database :
- OpenAIRE
- Journal :
- Transfusion
- Accession number :
- edsair.doi.dedup.....9933c7759ad6a85fc36e28a4d9dc56ff