Ocimum gratissimumLinn. Leaves reducethe key enzymes activities relevant toerectile dysfunction in isolated penile andtesticular tissues of rats

Background:Ocimum gratissimumL. is a medicinal plant widely grown in tropical and subtropical regions with theleafdecoctionusuallytakeninfolkmedicinetoenhanceerectileperformanceinmenalthoughtheprobablemechanism of actions remains undetermined. This study examined the inhibitory potentials ofOcimum gratissimumleaves on some key enzymes associated with erectile dysfunction in penile and testicular tissues of the rat.Methods:Inhibitory effect of aqueous extract (1:10w/v)ofO. gratissimumleaves on the activities of phosphodiesterase-5(PDE-5), arginase, angiotensin I–converting enzyme (ACE), and acetylcholinesterase (AChE) in penile and testicular tissueswere assessed. Also, the extract was investigated for ferric reducing antioxidant property(FRAP) and 1,1-diphenyl-2-picryl-hydrazil (DPPH) radical scavenging abilities.Results:The extract showed higher PDE-5 (IC50=43.19μg/mL), ACE (IC50= 44.23μg/mL), AChE (IC50= 55.51μg/mL) andarginase (IC50= 46.12μg/mL) inhibitory activity in thepeniletissuethanPDE-5(IC50= 44.67μg/mL), ACE (IC50= 53.99μg/mL), AChE (IC50= 60.03μg/mL) and arginase (IC50=49.12μg/mL) inhibitory activity in the testicular tissue homogenate.Furthermore, the extract scavenged free radicals and in a dose-dependent manner.Conclusion:Theenzymeactivitiesdisplayedmightbeassociatedwiththebioactivecompoundspresentintheextractwhich could possibly explain its use in the management of erectile dysfunction (ED)

Ocimum gratissimum Linn. Leaves reduce the key enzymes activities relevant to erectile dysfunction in isolated penile and testicular tissues of rats

Abstract Background Ocimum gratissimum L. is a medicinal plant widely grown in tropical and subtropical regions with the leaf decoction usually taken in folk medicine to enhance erectile performance in men although the probable mechanism of actions remains undetermined. This study examined the inhibitory potentials of Ocimum gratissimum leaves on some key enzymes associated with erectile dysfunction in penile and testicular tissues of the rat. Methods Inhibitory effect of aqueous extract (1:10 w/v) of O. gratissimum leaves on the activities of phosphodiesterase-5 (PDE-5), arginase, angiotensin I –converting enzyme (ACE), and acetylcholinesterase (AChE) in penile and testicular tissues were assessed. Also, the extract was investigated for ferric reducing antioxidant property(FRAP) and 1,1-diphenyl-2-picryl-hydrazil (DPPH) radical scavenging abilities. Results The extract showed higher PDE-5 (IC50 = 43.19 μg/mL), ACE (IC50 = 44.23 μg/mL), AChE (IC50 = 55.51 μg/mL) and arginase (IC50 = 46.12 μg/mL) inhibitory activity in the penile tissue than PDE-5 (IC50 = 44.67 μg/mL), ACE (IC50 = 53.99 μg/mL), AChE (IC50 = 60.03 μg/mL) and arginase (IC50 = 49.12 μg/mL) inhibitory activity in the testicular tissue homogenate. Furthermore, the extract scavenged free radicals and in a dose-dependent manner. Conclusion The enzyme activities displayed might be associated with the bioactive compounds present in the extract which could possibly explain its use in the management of erectile dysfunction (ED)

Inhibitory Effect of Bryophyllum pinnatum (Lam.) Oken leaf Extract and their Fractions on α-amylase, α-glucosidase and Cholinesterase Enzyme

Bryophyllum pinnatum (Lam.) Oken leaves are employed as food and as traditional medicines. This study investigates the antioxidant activity (reducing power, DPPH, ABTS, FRAP, H2 O2 scavenging ability and metal ion chelating), carbohydrate digesting enzymes activity and inhibitory activity of cholinergic enzyme of aqueous extract and fractions (n-hexane, ethyl acetate, n-butanol, residual aqueous fraction) of B. pinnatum leaves were investigated. Results showed that aqueous extract of B. pinnatum exhibited DPPH radical scavenging abilities, iron chelation, hydrogen peroxide scavenging abilities and reducing power (Fe3+- Fe2+). B. pinnatum aqueous extract also had considerably α-amylase and α-glucosidase inhibitory activities with IC50 values 149.20 ± 14.44 μg/mL and 126.15 ± 9.76 μg/mL respectively. Our findings indicated that ethyl acetate fraction contained a considerably higher (p < 0.05) amount of total phenolic, flavonoids, total antioxidant, FRAP, metal ion, ABTS and DPPH radical scavenging activity than other solvent fractions. Furthermore, the ethyl acetate fraction elicited a significantly higher (p < 0.05) inhibitory effects on α-glucosidase (IC50 = 70.90 ± 1.23 μg/ml), α-amylase (IC50 = 62.45 ± 1.22 μg/ml), acetylcholinesterase (AChE) (IC50 = 66.75 μg/mL) and butyrylcholinesterase (BChE) (IC50 = 62.97 μg/mL) activities than other fractions. Hence, B. pinnatum leaves were rich in biologically active components; thus, could be employed to formulate new plant-based pharmaceutical and nutraceutical drugs to improve human health