| خلاصه مقاله | Introduction: Numerous pre
-clinical and clinical studies have indicated that
angiotensin
-converting enzyme inhibitors such as Enalapril can reinforce
memory and learning. Therefore, this study aimed to investigate memory
impairment induced by
hyoscine in young male rats and to evaluate the
effects of
enalapril as a treatment for improving memory affected by hyoscine
using passive avoidance and shuttle box methods.
Methods and Materials: A total of 30 male Wistar rats were randomly divided
into five groups, each including six rats. The groups included control, regular
saline recipient, and hyoscine recipient interventions (enalapril 0.5 mg/kg, enalapril 1 mg/kg, and enalapril 2 mg/kg). Hyoscine ampules were used as an
intraperitoneal injection at a dose of 0.5 mg per kg for five days to induce
memory impairment in the studied animals. All groups were tested and
compared in a shuttle box after five days by passive avoidance method.
Results: The data obtained from the passive avoidance test in the shuttle box
in
hyoscine
-treated groups showed that enalapril consumption significantly
improved memory and learning parameters in diabetic male rats (
p = 0.05).
The effect of different drug regimens on total antioxidant capacity was
analyzed as mean ± standard deviation. The obtained data were as follows:
normal saline (0.16
± 0.715),
hyoscine (0.07
± 0.973),
hyoscine
+
enalapril (0.5
mg/kg; 0.05
± 0.565),
hyoscine
+
enalapril (1 mg/kg; 0.11
± 0.532), and
hyoscine
+
enalapril (2 mg/kg; 0.02±0.328). The effect of different drug
regimens on malondialdehyde was also analyzed as mean ± standard
deviation. The obtained data were as follows: normal saline (0.22
± 1.93),
hyoscine (0.12
± 2.13), hyoscine
+
enalapril (0.5 mg/kg; 0.17
± 1.58),
hyoscine
+
enalapril (1 mg/kg; 0.19
± 1.93), and hyoscine
+
enalapril (2 mg/kg; 0.085
±
1.5).
Conclusion and
Discussion: The administration of
enalapril in rats improved
memory disorder, which is caused by its effects on oxidative stress,
inflammatory factors, and the control of complications caused by
hyoscine in
these animals. Also, regarding learning and memory, the passive avoidance
test increased the recall of information in animals. With further studies, there
is a high probability of repurposing ACE inhibitors such as
enalapril for
memory malfunctions. |