Objectives Systemic administration of lipopolysaccharide induces neuroinflammation leading to cognitive deficit and memory impairment. Herein, we investigated the effects of p-Coumaric acid (PCA) in LPS induced neuroinflammation in mice. PCA is reported to possess free radicle scavenging and neuroprotective action. Methods Mice received treatment with PCA (80 mg/kg, and 100 mg/kg, p.o.) for 28 days. LPS (0.25 mg/kg) was administered intraperitoneally from Day 15 to 21, to all groups. Memory impairment and cognitive deficit were assessed by MWM and Y maze test, followed by estimation of ROS, TNF-α, IL-6, caspase-3 and c-Jun in the brain homogenate by ELISA. Histopathological changes were investigated using Nissl and H&E staining. Key findings PCA attenuated increased oxidative stress, significantly increasing SOD, GSH levels and decreasing MDA level and AChE activity in mice brain, lowered the levels of TNF-α and IL-6 indicating protection against neuroinflammatory reaction. PCA also suppressed neuronal apoptosis, as indicated by decreased levels of caspase-3 and c-Jun. Further, histopathological findings revealed that PCA attenuated neuronal loss and pathological abnormalities in the hippocampus. Conclusions Our findings give compulsive evidence suggesting a protective effect of PCA in neuroinflammation, cognitive impairment and neuronal apoptosis induced by LPS, through its antioxidant, AChE inhibitory, anti-inflammatory and antiapoptotic activity determined by behavioural, biochemical and histopathological measures.

This chapter presents an overview of various complementary nutritional approaches for the management of brain disorders. Numerous epidemiological studies emphasize the growing burden of brain disorders worldwide. Due to the complex pathophysiology, lack of precise diagnostic and therapeutic options, there is growing need to have alternative approaches. One important strategy for the prevention and treatment of brain impairment is based on dietary supplements, functional foods, and nutraceuticals. The current chapter illustrates various aspects of available nutritional products for the brain disorder. Considering the recent surge in the nutritional products and as it destined to play an important role in future, existing regulatory framework is explained here which ensures purity, safety, and efficacy of the marketed products.

D-galactose (D-gal) induced senescence in rodents is a widely used model for assessment of molecules affecting brain ageing. Chronic administration of D-gal causes neuroin ammation leading to cognitive de cit and memory impairment which represent Alzheimer's dementia. In present study, we investigated the neuroprotective effects of the natural phenol, p-Coumaric acid (PCA) and its underlying mechanism in the chronic D-gal treated mice. Subcutaneous administration of D-gal (150 mg/kg) to Swiss albino mice for 42 consecutive days resulted in cognitive impairment as observed in Morris water maize (MWM) and Y maze test, which was ameliorated by concurrent treatment with PCA (80 mg/kg, and 100 mg/kg, p.o.). Importantly, PCA treatment attenuated the D-gal induced oxidative stress and signi cantly inhibited acetylcholinesterase (AChE) activity in mice brain. Furthermore, PCA treatment signi cantly lowered levels of in ammatory marker nuclear factor kappa B (NFκB) and reduced levels of proapoptotic enzyme caspase 3. We also observed that PCA treatment exhibited β-secretase enzyme (BACE1) inhibitory effect. However, our results revealed that PCA treatment failed to decrease the level of advanced glycation end products (AGE) both in vitro and in vivo. Taken together, current study demonstrated the signi cant neuroprotective effect of PCA against D-galactose induced neuroin ammation, cognitive impairment and apoptosis.

This chapter presents an overview of various complementary nutritional approaches for the management of brain disorders. Numerous epidemiological studies emphasize the growing burden of brain disorders worldwide. Due to the complex pathophysiology, lack of precise diagnostic and therapeutic options, there is growing need to have alternative approaches. One important strategy for the prevention and treatment of brain impairment is based on dietary supplements, functional foods, and nutraceuticals. The current chapter illustrates various aspects of available nutritional products for the brain disorder. Considering the recent surge in the nutritional products and as it destined to play an important role in future, existing regulatory framework is explained here which ensures purity, safety, and efficacy of the marketed products.