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Objective: To evaluate the effect of p-coumaric acid (p-CA) on haloperidol-induced catalepsy in Swiss albino male mice. Methods: To induce catalepsy, haloperidol (1 mg/kg i.p.) was administered for 21 consecutive days. p-CA (50, 75, and 100 mg/kg, PO) was administered 30 min before haloperidol injection for 21 consecutive days. For catalepsy, locomotor activity and motor coordination scores were recorded on the 17, 14, and 21 days of drug treatment, while the gait analysis score was recorded on day 21. After behavioral testing, animals were sacrificed, and various biochemical and histopathology tests of the brain were conducted. Dopamine, malondialdehyde, reduced glutathione (GSH), superoxide dismutase (SOD), and catalase activity were examined in the brain. Results: Chronic administration of haloperidol significantly increased catalepsy in mice. It also produced hypolocomotion, motor coordination, and gait disturbance in mice. p-CA significantly inhibited haloperidol-induced catalepsy. Haloperidol significantly increased malondialdehyde levels in the brain. While dopamine levels in the brain dropped along with GSH, SOD, and catalase activity levels, which also had an impact on the histology of the brain. p-CA significantly reduced haloperidol-induced increases in brain oxidative stress, dopamine levels in the brain, and brain histology in mice. Discussion: p-CA significantly reduced haloperidol-induced catalepsy, possibly through reducing oxidative stress and increasing brain dopamine levels. It can be a good candidate drug for extrapyramidal symptoms in Parkinson's disease and adjuvant therapy with antipsychotic drugs. [ABSTRACT FROM AUTHOR]

Purpose: To investigate the hypolipidemic potential of the 70 % ethanol fruit extract of Prosopis cineraria (Fabaceae) (Et. PCF) in triton-induced hyperlipidemia in rats. Methods: Et-PCF was obtained by pulverizing whole dried fruits and extracting with 70 % ethanol. Adult Sprague Dawley rats were divided into six groups of six rats each. The groups were namely normal control, hyperlipidaemic control, standard drug-treated (simvastatin 4 mg/kg), and three Et-PCF (200, 400 and 600 mg/kg, respectively)-treated groups. Apart from normal control, all other groups received a single dose of triton (200 mg/kg, i.p.) exactly 30 min after a dose of the standard drug and Et-PCF for the induction of hyperlipidemia. Twenty four hours after triton injection, hyperlipidemia was confirmed by collecting blood samples from all the rats and testing for serum lipid profile. Antioxidant activity, in the form of inhibition of lipid peroxidation, was determined along with chromatographic analysis. Moreover, molecular docking study of β-sitosterol (active constitute of PCF) was performed with Farnesoid X receptor. Results: Triton-induced hyperlipidemia group showed significant increase in total cholesterol, low density lipoprotein cholesterol (LDL), very low density lipoprotein cholesterol (VLDL) , triglyceride, atherogenic index and decreased high density lipoprotein cholesterol (HDL), compared to normal control group. Et-PCF treated groups showed reduction in serum cholesterol, triglyceride, VLDL and LDL levels compared to triton treated control group. Extract at the dose of 200 mg/kg significantly reduce serum cholesterol (p < 0.01) and serum LDL (p < 0.01). At the dose level of 400 mg/kg and 600 mg/kg extract is effective to significantly reduce serum cholesterol (p < 0.05), triglyceride (p < 0.05), VLDL (p < 0.05), LDL (p < 0.05) and atherogenic index (p < 0.05) and these results are almost equivalent to those of standard drug simvastatin. Furthermore, antioxidant activity, i.e., IC50 of Et-PCF was 58.33 μg/ml. Molecular docking score of β-sitosterol for Farnesoid X receptor was -8.32 kcal/mol, suggesting excellent binding conformation of Et-PCF to receptor molecules. Conclusion: The findings suggest that Prosopis cineraria may be beneficial for preventing hyperlipidaemic complications by its anti-hyperlipidemic and antioxidant activities. [ABSTRACT FROM AUTHOR]

Prosopis cineraria (L.) Druce (Leguminosae) (syn. Prosopis spicigera L.) has antidiabetic and antioxidant potential. Earlier we reported its hypolipidemic activity obtained from ethanol extract (ET-PCF). Object of this work was to isolate ferulic acid (FA) from ET-PCF and evaluate hypolipidemic activity against high-fat diet (HFD)-induced hyperlipidemic laboratory rats. ET-PCF was subjected to flash column chromatography to isolate FA. The chemical structure of the isolated compound was elucidated by UV, IR, 1 H NMR, 13 C NMR and LC-MS. Further, the antihyperlipidemic effect of FA (10, 20 and 40 mg/kg, p.o.) in HFD-induced hyperlipidemic rats was investigated. Hyperlipidemia was induced in male Sprague-Dawley rats by feeding with HFD for 60 days. Lipid parameters such as total cholesterol (TC), Low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) and triglycerides (TG) levels were measured in serum and hepatic tissue. Hepatic oxido-nitrosative stress (SOD, GSH, MDA and NO) were also determined. Histological evaluation of liver tissue was carried out. The structure of the isolated compound was characterized based on spectral data and confirmed as FA. HFD induced an alteration in serum, and hepatic lipid profile (triglyceride, cholesterol, HDL, and LDL) was significantly restored (p < 0.001) by administration of FA (20 and 40 mg/kg, p.o.). The elevated level of oxido-nitrosative stress in liver was significantly reduced (p < 0.001) by FA (20 and 40 mg/kg, p.o.). Histological aberration induced in the liver after HFD ingestion were restored by FA administration. Ferulic acid isolated from ET-PCF showed hypolipidemic effects in HFD-induced hyperlipidemic rats via modulation of elevated oxido-nitrosative stress.