Dietary Supplementation of Fenugreek Seed Extract and Choline-Docosahexaenoic acid on Oxidative Stress and Neurodegeneration in Ovariectomized Rats with Bilateral Common Carotid Artery Occlusion

2021 ◽  
pp. 2153-2161
Author(s):  
Anjaneyulu Konuri ◽  
Kumar M R Bhat ◽  
Kiranmai S Rai ◽  
Nagamma T ◽  
Rajesh Thangarajan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Learning And Memory ◽  
Artery Occlusion ◽  
Carotid Artery Occlusion ◽  
Seed Extract ◽  
Fenugreek Seed ◽  
Bilateral Common Carotid Artery ◽  
Brain Oxidative Stress ◽  
Cerebral Ischemic ◽  
Common Carotid Artery Occlusion

As impairment of memory and ischemic brain injury is more common in female of menopausal age, the current study aims to evaluate the protective role of fenugreek seed extract and choline-Docosahexaenoic acid (DHA) on cognitive behavior, oxidative stress and neurodegeneration in ovariectomized-cerebral ischemic rats. Cerebral ischemia was induced by bilateral common carotid artery occlusion (BCCAO) surgery to ovariectomized adult female wistar rats. Fenugreek, choline-DHA and combination of fenugreek with choline-DHA was supplemented for 30days after ovariectomy and continued for 14 more days after BCCAO surgery. Effect of this supplementation on learning and memory, brain oxidative stress and neurodegeneration in the CA1, CA3 hippocampal sub-regions were analyzed. Ovariectomized-cerebral ischemic rats demonstrated learning and memory impairment when subjected to passive avoidance task. Further, these rats also had increased brain oxidative stress, and neurodegeneration in CA1, CA3 sub-regions of hippocampus. Conversely, combined supplementation of fenugreek with choline-DHA to ovariectomized-cerebral ischemic rats exhibited a significant improvement in their learning and memory abilities, with reduced oxidative stress and neurodegeneration in CA1 and CA3 sub-regions of hippocampus.

Systemic responses to carotid occlusion in the anesthetized rat

1992 ◽  
Vol 72 (4) ◽  
pp. 1247-1254 ◽  
Author(s):  
J. M. Lash ◽  
E. Haase ◽  
A. A. Shoukas
Keyword(s):  
Pressor Response ◽  
Cardiovascular Responses ◽  
Artery Occlusion ◽  
Carotid Artery Occlusion ◽  
Carotid Occlusion ◽  
Male Rats ◽  
Bilateral Carotid Occlusion ◽  
Bilateral Common Carotid Artery ◽  
Bilateral Carotid ◽  
Common Carotid Artery Occlusion

We evaluated the effects of four standard anesthetization regimens on the systemic cardiovascular responses to bilateral common carotid artery occlusion in 28 adult male rats. Rats were randomly assigned to anesthesia groups: thiopental sodium (PT; 100 mg/kg ip), alpha-chloralose (CH; 100 mg/kg iv), ketamine hydrochloride plus acepromazine (KA; 135 mg/kg and 1.5 mg/kg sc), and pentobarbital sodium (PB; 50 mg/kg ip). PT and PB animals had similar baseline heart rates (HR; 333 and 345 beats/min, respectively) and arterial pressures (MAP; 126 and 118 mmHg, respectively), whereas both were lower in CH and KA (314 and 288 beats/min, 92 and 85 mmHg). During bilateral carotid occlusion, PT demonstrated the largest change in MAP (dMAP; +27 mmHg) but the smallest change in HR (dHR; +8 beats/min). CH and PB demonstrated similar dHR (+24 and +16 beats/min) and dMAP (+20 and +19 mmHg). KA demonstrated a significant dHR (+14 beats/min), but the average dMAP was not statistically significant (+3 mmHg). Therefore, carotid occlusion in rats anesthetized with PT, PB, or CH consistently elicits a systemic arterial pressor response comparable with that reported for conscious animals. When the magnitude and stability of baseline HR and MAP are also considered, PT and PB anesthetization seem to be the most reliable for evaluation of the carotid occlusion pressor response in rats.

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