Non- steroidal anti-inflammatory drugs (NSAIDs) such as Diclofenac are in
common use worldwide for the treatment of conditions such as pain,
rheumatoid arthritis, and musculoskeletal disorders. The efficacy of this drug
in alleviating pain has made it prime choice in the management of cancer and
sickle cell disease patients. antipyresis and analgesia. In spite of their
beneficial effects, NSAIDs have been notified to enhance the risk of heart
attack and stroke the present study was conducted to investigate the impact of
short-term administration of different doses of diclofenac on cardiac
biomarkers. Twenty male albino rats weighing 150-200g were divided equally
into four groups. The rats in the control group were orally administered
distilled water. The other three groups were given diclofenac doses. The rats
in the first (n=5), second (n=5), and third (n=5) groups were orally
administered diclofenac dose of 150, 100 and 50mg/kg live weight/day,
respectively, every day for seven days. At the end of the experimental period,
the animals were sacrificed, blood samples were taken from the animals by
Cardiac puncture under general anesthesia and afterwards rats were
immediately euthanized. Cardiac tissue samples were prepared for
histological assessment. Rat – specific cardiac Troponin (T) level showed that
the group administered 150 and 100mg/kg Diclofenac (DIC) increased
significantly (p<0.05) when compared to the control while that of 50mg/kg had
no significant difference. Creatinine Kinase-MB, lactate dehydrogenase (LDH)
and aspartate amino transferase (AST) Activity increased significantly when
compared to control. This increase is dose-dependent with the highest dose
having more serum activity than the low dose. The histological examination of
the heart shows that the high dose imposed cardiac injury while the low dose
had no effect on the heart. In conclusion, these results suggest that high dose
of diclofenac may cause cardiac injury while low dose may cause little or no
cardiac injury even at short term administration.
Keywords: Non- steroidal anti-inflammatory drugs (NSAIDs), Diclofenac,
Cardiac biomarkers, Histology