AD	Alzheimer’s disease
Aβ	Amyloid-beta
CNS	Central nervous system
HRT	Hormone replacement therapy
ER	Estrogen receptor
RJ	Royal jelly
APP	Amyloid precursor protein
MRI	Magnetic resonance imaging
HCD	High cholesterol diet
OVX	Ovariectomy
E2	Estradiol
TC	Total cholesterol
TG	Triglycerides
LDL-C	Low-density lipoprotein cholesterol
HDL-C	High-density lipoprotein cholesterol
BBB	Blood-brain barrier
ECG	Electrocardiogram
HRV	Heart rate variability
SDNN	Standard deviation of the RR interval
RMSSD	The mean square root of the adjacent RR interval
VLF	Very-low-frequency
LF	low-frequency
HF	high-frequency
BRS	Baroreflex sensitivity
PE	Phenylephrine
SNP	Sodium nitroprusside
SBP	Systolic blood pressure
AchE	Acetylcholinesterase
ChAT	Choline Acetyltransferase
SOD	Superoxide dismutase
MDA	Malonaldehyde
BACE1	beta-site APP cleaving enzyme 1
LRP1	LDL receptor-related protein 1
RAGE	Receptor for advanced glycation end products