Evaluation of Anti-Psychotic potential of Phytocompound rich Fractions of Methanolic extract of Lagenaria siceraria (Bottle Gourd) fruits in Murine Models of Schizophrenia

Abstract

Context: Psychosis is a mental disorder, which is characterized as the reducing association with certainty and conviction. Around 1-2% of the world's population suffers from psychosis. The people affected by psychosis have hallucinations, delusions, forgetfulness, abolition, and anhedonia. Currently existing most of the anti- psychotic medications express the adverse drug reactions. Thus for the management of psychosis, satisfactory and adequate remedies are not available. Lagenaria siceraria (Molina) Standley (LS) (Cucurbitaceae) fruits, popularly known as “bottle gourd” (English) and “Lauki” (Hindi), exhibit numerous intrinsic therapeutic properties and actions. However limited scientific investigations have been performed to determine the neuroprotective potential of LS fruits. With this background, the present study was intended to investigate LS fruits for the assessment of anti-psychotic activity. Aims and Objectives: The rationale of this study was to evaluate the anti-psychotic activity of the phytocompound rich fractions of the methanolic extract of LS i.e., chloroform fraction of the methanolic extract (CFME), and acetone fraction of the methanolic extract (AFME) by using experimental models of cataleptic and stereotypic behavior in Swiss Albino mice. Materials and Methods: Haloperidol-induced catalepsy and apomorphine-induced stereotypy were the experimental screening tests performed for the assessment of anti-psychotic activity of the phytocompound rich fractions of methanolic extract of LS fruits at the doses of 100, 200, and 400mg/kg, p.o. in mice. Results: CFME and AFME, 100-400 mg/kg, significantly reduced cataleptic score and stereotypic behavior in mice, in dose-dependent manner. At doses of 200 and 400mg/ kg, AFME (P<0.001) exhibited more significant effect than CFME. In addition CFME and AFME did not generate motor dysfunction in mice. Preliminary phytochemical screening on CFME revealed the presence of saponins, phytosterols, and terpenoids, while phytochemical investigations on AFME indicated the presence of saponins, phenolic compounds, flavonoids and tannins. This was the first scientific report, which indicates that the LS fruits exhibit anti-psychotic action, confirming the folklore claims. Future investigations and studies should emphasize separation, characterization, and identification of the bioactive phytoconstituents and also on evaluating the precise mechanism involved in the anti-psychotic activity of both the fractions.