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Related Experiment Videos

Hyperfibrinogenemia in rats treated with meloxicam.

Mónica Moya1, Vilma Campana, Antonio Gavotto

  • 1From Cátedra de Física Biomédica, Facultad de Ciencias Medicas, Universidad Nacional de Córdoba, Santa Rosa, Argentina.

Japanese Heart Journal
|November 28, 2002
PubMed
Summary

Meloxicam effectively normalized elevated fibrinogen levels in rats with multiple injuries by inhibiting prostaglandin biosynthesis. However, it did not reverse the associated histopathological aortic lesions.

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Area of Science:

  • Biomedical Science
  • Pharmacology
  • Cardiovascular Research

Background:

  • Fibrinogen elevation is linked to cardiovascular disease risk.
  • Prostaglandin biosynthesis influences fibrinogen secretion.
  • Meloxicam inhibits prostaglandin synthesis.

Purpose of the Study:

  • To investigate meloxicam's effect on fibrinogen levels.
  • To assess meloxicam's impact on thoracic aorta histopathology in a rat model of multiple injuries.

Main Methods:

  • Rats underwent weekly laparotomies for 30 days to induce multiple injuries (MI).
  • Meloxicam (0.065 mg/kg/day) was administered orally to the MI group post-third laparotomy for 10 days.
  • Fibrinogen levels were measured via spectrophotometry; thoracic aorta tissues were examined histopathologically.

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Main Results:

  • Multiple injuries significantly increased fibrinogen levels compared to controls (336.6±7.5 mg/dL vs. 208.7±6.0 mg/dL).
  • Meloxicam treatment normalized fibrinogen levels to control values (198±8.7 mg/dL).
  • Histopathological analysis revealed endothelial denudation and intima enlargement in 96% of slices in both MI and meloxicam groups, indicating no lesion regression.

Conclusions:

  • Meloxicam effectively reduces hyperfibrinogenemia in a rat model of multiple injuries, likely via selective cyclooxygenase-2 (Cox-2) inhibition.
  • Despite normalizing fibrinogen, meloxicam did not lead to regression of induced histopathological lesions in the thoracic aorta.