@article {1351, title = {Phytochemical Profiling of Hemidesmus indicus (L.) R. Br. ex Schult and its Antioxidant, Anti-Inflammatory and Neuroprotection Linked Enzyme Inhibitory Properties}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {January 2021}, pages = {196-205}, type = {Research Article}, chapter = {196}, abstract = {

Introduction: Exponential expansion in the usage of herbal medicines was observed in recent decades due to the increasing importance of the traditionally used natural remedies. In order to identify bioactive components of medicinal value, in the present study, we aimed to screen different extracts of Hemidesmus indicus (L.) R. Br. ex Schult for health beneficial effect by exploring its biological properties and phytochemical profile. Methods: By using sequential extraction method, H. indicus roots were extracted with various solvents based on low to high polarity. Subsequently, quantitative phytochemical profiling, antioxidant and enzyme inhibitory activities were tested by using standard protocols. The MTT assay was carried out in SHSY-5Y cell lines to evaluate anti-inflammatory effect. Results: Methanol extract displayed highest phytochemical content with high concentration of terpenoid (59.82{\textpm}0.97 mg LE/g of extract) and saponin (15.03{\textpm}0.45 mg DE/g of extract). All the extracts exhibited concentration dependent pharmacological activities. In comparison, methanol extract produced highest activities with IC50 of 15.21{\textpm}0.31 and 11.36{\textpm}0.39 μg/ml against NO and DPPH radical scavenging assays respectively. Also, methanol extract showed maximum inhibition against acetylcholinesterase (IC50=17.46{\textpm}0.49 μg/ml) and butyrylcholinesterase (IC50=31.05{\textpm}0.39 μg/ml), however, aqueous extract displayed highest potency against monoamine oxidase-B inhibition (IC50=24.60{\textpm}0.45 μg/ml). At 12.5-100 μg/mL concentrations, methanol and aqueous extracts did not show any cytotoxic effect on SH-SY5Y cells and dose dependently suppressed TNF-α and IL-6 production. Conclusion: Collectively, H. indicus could act as a disease modifying therapeutic in pharmaceutical industries by utilizing it as alternative therapy for the management of oxidative stress and its related disorders.

}, keywords = {Acetylcholinesterase, Antioxidant, Butyrylcholinesterase, Hemidesmus indicus, Monoamine oxidase}, doi = {10.5530/pj.2021.13.28}, author = {Swati Som and Justin Antony and Palanisamy Dhanabal and Sivasankaran Ponnusankar} } @article {1295, title = {Chemical Constituents from Diospyros discolor Willd. and their Acetylcholinesterase Inhibitory Activity}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {November 2020}, pages = {1547-1551}, type = {Original Article}, chapter = {1547}, abstract = {

Background: Diospyros discolor is commonly known as {\textquoteleft}buah mentega{\textquoteright} and traditionally used to treat various diseases. Many compounds especially triterpenes in Diospyros sp. were reported to inhibit acetylcholinesterase (AChE) and butyrylcholinesterase enzymes in vitro and in vivo. D. discolor was reported to contain triterpenes, yet to be investigated for their AChE inhibitory activity. D. discolor leaves extract showed high (95.80 {\textpm} 1.57 \%) AChE inhibitory activity at the concentration of 100 μg/mL. Objective: The aim of the present study is to identify chemical constituents from D. discolor and their AChE inhibitory activity. Materials and Methods: The leaves and stem barks of D. discolor were air dried, powdered and successively extracted using n-hexane, dichloromethane and methanol. The solvents were evaporated to obtain dried crude extracts. The compounds were purified using exhaustive chromatographic procedures and their structures were determined by analyses of spectral data. The AChE inhibitory activity was carried out using Ellman{\textquoteright}s method. Results: A new flavonol, 7,4{\textquoteright}-dihydroxy-5,3{\textquoteright},5{\textquoteright}-trimethoxyflavonol (1), along with five known flavonoids (2-6) and six known triterpenes (7-13) were isolated from the leaves and stem barks of D. discolor. Selected compounds were evaluated for AChE inhibitory activity, in which stigmast-4-ene- 3-one (7) showed the lowest inhibition concentration with an IC50 value of 11.77 {\textpm} 2.11 μM. Conclusion: A new flavonol (1) and twelve known compounds were identified and characterized. Even though D. discolor extracts showed high percent inhibition against AChE enzyme, the isolated compounds showed moderate inhibition.

}, keywords = {Acetylcholinesterase, Ebenaceae, Flavonoid, Triterpenes}, doi = {10.5530/pj.2020.12.212}, author = {Norhafizoh Abdul Somat and Zaini Yusoff and Che Puteh Osman} } @article {621, title = {Photoactivated chlorophyllin and acetylcholinesterase/ cytochrome oxidase activity in Fasciola gigantica cercaria larvae}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {May 2018}, pages = {768-772}, type = {Original Article}, chapter = {768}, abstract = {

Objective: The effect of chlorophyllin (CHL), CHL + freeze dried cow urine (FCU) and FCU on acetylcholinesterase (AChE) and cytochrome oxidase activity in the nervous tissue of the host snail Lymnaea acuminata, and parasitic cercaria larvae of Fasciola gigantica were studied. Methods: Whole cercaria larvae and snail nervous tissue was homogenized and supernatant was used as an enzyme source. Enzyme activity was measured in 10-mm path length cuvette using incubation mixtures and change in optical density was recorded. Results: Sublethal 4 h LC50 40\% and 80\% of these formulations in sunlight and laboratory conditions caused no significant change in AChE activity in the nervous tissue of host snail. It was noted that sublethal in vivo 8 h exposure to 40\% and 80\% of 4 h LC50 of single and binary combination of CHL+FCU, CHL and FCU significantly altered the AChE and cytochrome oxidase activity in the cercaria larvae. Binary combinations of CHL+FCU in sunlight were more effective in inhibiting both the enzymes. Conclusion: The present study reported that enzymes AChE and cytochrome oxidase were inhibited by chlorophyllin formulations and thus causing the larval death inside the snail body without affecting the snail itself which is an important bioindicator of aquatic ecosytem.

}, keywords = {Acetylcholinesterase, Cercaria larva, Cytochrome oxidase, Fasciola Gigantica, Lymnaea acuminata, Nervous tissue}, doi = {10.5530/pj.2018.4.129}, url = {http://fulltxt.org/article/667}, author = {Dinesh Kumar Singh and Divya jyoti Singh} } @article {426, title = {In vitro \& ex vivo Acetylcholinesterase Inhibitory Activity of Morinda citrifolia Linn (Noni) Fruit Extract}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {September 2017}, pages = {900-905}, type = {Original Article}, chapter = {900}, abstract = {

Background: Psychological problem is a key medical issue for numerous neuropsychiatric and neurodegenerative diseases, for example, schizophrenia, Alzheimer\’s, dementia, seizure and Parkinsonism. Morinda citrifolia (Noni) has been utilized for a considerable length of time to cure or counteract assortment of diseases by conventional therapeutic professionals in Hawaii and Polynesia. Objective: The present study is focused to identify the neuroprotective activity of Morinda citrifolia fruit extract (MCFE) on in vitro and ex vivo animal model by inhibition of acetylcholinesterase (AChE), an enzyme target used for the treatment of Alzheimer\’s disease. Methods: Acetylcholinesterase inhibition assay was performed by in vitro \& ex vivo methods as described by Ellman et al. In vitro antioxidant assay of the extract was performed by DPPH free radical scavenging activity \& nitric oxide scavenging activity. Statistical analysis used: Statistical analysis was carried out using non linear regression analysis for plotting the line of best fit for the observed values using Graph- Pad Prism software. Results: By performing in vitro antioxidant assay the IC50 value of the standard quercetin was found to be 46.22 \μg/ml as compared to the MCFE which has an IC50 value of 43.14 \μg/ml for DPPH free radical scavenging activity. Similarly the IC50 value of the standard ascorbic acid was found to be 81.85 \μg/ml as compared to the MCFE which has an IC50 value of 148.0 \μg/ml for nitric oxide scavenging activity. Acetylcholinesterase inhibition assay was performed by in vitro method and the IC50 value of MCFE and neostigmine was found to be 31.84 \μg/ml \& 19.71 \μg/ml respectively. Conclusions: The present study investigated the neuroprotective activity of MCFE and it was identified by both in vitro and ex vivo techniques that the phytoconstituents has the ability to improve the learning and memory function by inhibiting the acetylcholinesterase.

}, keywords = {Acetylcholinesterase, ex vivo., in vitro, Morinda citrifolia, Neuroprotective activity, Noni}, doi = {10.5530/pj.2017.6.141}, url = {http://fulltxt.org/article/194}, author = {Srikanth Jeyabalan and Kavimani Subramanian and Uma Maheswara Reddy Cheekala and Chitra Krishnan} } @article {43, title = {Antioxidant, anti-acetylcholinesterase and anti-glycosidase properties of three species of Swertia, their xanthones and amarogentin: A comparative study}, journal = {Pharmacognosy Journal}, volume = {7}, year = {2015}, month = {Mar-Apr 2015}, pages = {117-123}, type = {Original Article}, chapter = {117}, abstract = {

Aim: The aim of the study was to analyze the antioxidant, anti-amylase, anti-glucosidase and antiacetylcholinesterase (anti-AChE) properties of the leafy shoots of three Indian species of Swertia e.g. Swertia chirata and its substitutes Swertia bimaculata, and Swertia decussata, their xanthones and amarogentin. Methods: Antioxidant activity of the methanolic extracts of leafy shoots was measured in terms of DPPH, superoxide and nitric oxide radical scavenging activities as well as metal chelating properties. Enzyme inhibitory properties were measured using AChE, \α-amylase and \α-glucosidase respectively. Five xanthones bellidifolin (1), swerchirin (2), decussatin (3), mangiferin (4) and 1-hydroxy-3,5,8-trimethoxy xanthone (6) and one iridoid, amarogentin (5) were isolated from Swertia chirata. The activities of the isolated components were compared. Results: Swertia chirata exhibited best antioxidant and anti-AChE properties than the other two species. The plants also possessed \α-glucosidase inhibitory properties but weak \α-amylase inhibitory activity. Highest activities were observed in Swertia chirata. We report here, for the first time, the antioxidant, anti-AChE and anti-glycosidase activity of 1-hydroxy-3,5,8-trimethoxy xanthone. This xanthone had strongest DPPH radical scavenging activity and anti-AChE property. Conclusion: The results suggest the beneficial effects of the xanthones of Swertia chirata. But further study should be carried out to prove the efficacy in vivo

}, keywords = {Acetylcholinesterase, Antioxidant., Glycosidase, Swertia Sp., Xanthone}, doi = {10.5530/pj.2015.2.6}, author = {Gargi Nag and Sukriti Das and Susmita Das and Bratati De}, editor = {Suvra Mandal} } @article {1466, title = {Antioxidant, anti-acetylcholinesterase and anti-glycosidase properties of three species of Swertia, their xanthones and amarogentin: A comparative study}, journal = {Pharmacognosy Journal}, volume = {7}, year = {2015}, month = {27th Dec, 2014}, pages = {117-123}, type = {Original Article}, chapter = {117}, abstract = {

Aim: The aim of the study was to analyze the antioxidant, anti-amylase, anti-glucosidase and antiacetylcholinesterase (anti-AChE) properties of the leafy shoots of three Indian species of Swertia e.g. Swertia chirata and its substitutes Swertia bimaculata, and Swertia decussata, their xanthones and amarogentin. Methods: Antioxidant activity of the methanolic extracts of leafy shoots was measured in terms of DPPH, superoxide and nitric oxide radical scavenging activities as well as metal chelating properties. Enzyme inhibitory properties were measured using AChE, \α-amylase and \α-glucosidase respectively. Five xanthones bellidifolin (1), swerchirin (2), decussatin (3), mangiferin (4) and 1-hydroxy-3,5,8-trimethoxy xanthone (6) and one iridoid, amarogentin (5) were isolated from Swertia chirata. The activities of the isolated components were compared. Results: Swertia chirata exhibited best antioxidant and anti-AChE properties than the other two species. The plants also possessed \α-glucosidase inhibitory properties but weak \α-amylase inhibitory activity. Highest activities were observed in Swertia chirata. We report here, for the first time, the antioxidant, anti-AChE and anti-glycosidase activity of 1-hydroxy-3,5,8-trimethoxy xanthone. This xanthone had strongest DPPH radical scavenging activity and anti-AChE property. Conclusion: The results suggest the beneficial effects of the xanthones of Swertia chirata. But further study should be carried out to prove the efficacy in vivo.

Key words: Swertia Sp., Xanthone, Glycosidase, Acetylcholinesterase, Antioxidant.

}, keywords = {Acetylcholinesterase, Antioxidant., Glycosidase, Swertia Sp., Xanthone}, author = {Gargi Nag and Sukriti Das and Susmita Das and Suvra Mandal and Bratati De} } @article {1494, title = {Pharmacological Evaluation of Cucumber for Cognition Enhancing Effect on Brain of Mice}, journal = {Pharmacognosy journal}, volume = {6}, year = {2014}, month = {8th April 2014}, pages = {100-107}, type = {Original Article}, abstract = {

Introduction: Cucumber is fruit of Cucumis sativus var. sativus L. which has been used traditionally in gastrointestinal problems, skin problems and as coolant in salad for body and brain. Cucumber is a great folk medicine used to reduce heat and inflammation. Cognitive effects of cucumber are assessed in this study. Methods: Fresh fruits of Cucumis sativus L. were ground and a paste was prepared which consisted of different concentrations of cucumber (10, 20, 30 \% w/w). The three doses were given ad libitum to mice for 15 successive days. Animal models utilized were sodium nitrite induced hypoxia and object recognition task. Biochemical analysis employed estimation of acetylcholinesterase activity in brain, serum glucose levels, cholesterol levels, brain lipid peroxidation (MDA) levels and reduced glutathione levels in brain of mice. Results: 6g/kg and 9g/kg doses of cucumber significantly (P\< 0.05, P\< 0.01) increased frequency of entry, number of entry and duration of entry in small compartment in sodium nitrite induced hypoxia model and depicted significantly (P\< 0.05, P\< 0.001) enhanced exploratory activity in object recognition task model. Further, biochemical analysis indicated good potential of cucumber in cognition enhancement. 9 g/kg dose (P\< 0.001) reduced brain AchE activity along with blood glucose and serum cholesterol levels. 6 g/kg dose (P\< 0.01) replenished brain GSH levels and reduced lipid peroxides. Conclusion: Cucumber increased cognition in rodents.

Key words: Hypoxia, object recognition task, acetylcholinesterase, glucose, cholesterol, dementia.

}, keywords = {Acetylcholinesterase, Cholesterol, Dementia, Glucose, Hypoxia, object recognition task}, author = {Manish Kumar, and Milind Parle} } @article {1238, title = {In vitro Evaluation of Acetylcholinesterase Inhibitory and Neuroprotective Activity in Commiphora species: A Comparative Study}, journal = {Pharmacognosy Journal}, volume = {12}, year = {202}, month = {September 2020}, pages = {1223-1231}, type = {Original Article}, chapter = {1223}, abstract = {

Introduction: Herbal medicines are widely used in the therapeutic intervention that could delay the onset of Neurodegenerative diseases like, Alzheimer{\textquoteright}s disease. Despite intensive advancements in the field of research currently available therapeutic strategies are often limited due to their adverse effects. Hence there is a need for the search for novel compounds for effective medications to treat neurocognitive deficits. Objective: The present study focused on acetylcholinesterase inhibitory and neuroprotective activity of Commiphora species plant for their possible use in Alzheimer{\textquoteright}s disease. Methods: Phytochemical screening, TLC bioautographic and colourimetric assay was performed to quantify their acetylcholinesterase inhibitory activity of ethanolic extracts of the Commiphora species. The MTT assay was carried to evaluate the neuroprotective effect against the Aβ-induced cytotoxicity in SHSY5Y cell lines. Results: The bark of Commiphora berryi, leaves of Commiphora caudata and Commiphora pubescens were found abundant in flavonoids, glycosides, steroids and terpenoids. Further, the ethanol extract of Commiphora berryi (65.48\% {\textpm} 0.10) showed the highest acetylcholinesterase inhibitory activity. The Aβ25-35 induced cell damage was as evidenced at a concentration of 20μM. The neuroprotective effect of the ethanol extracts was examined in neurodegenerative cells induced by Aβ25-35. On pretreatment with plant extracts, significant improvement in cell viability was observed as 63.42 {\textpm} 2.02\% (25μg/ml) for Commiphora berryi. The maximum percentage of in-vitro AChE inhibition and neuroprotective effect was effective in the ethanol bark extract of Commiphora berryi. Conclusion: The results are very rousing to continue the screening of more unexplored plant species could be used for the development of novel bioactive compounds to treat the many diseases, especially for Alzheimer{\textquoteright}s disease.

}, keywords = {Acetylcholinesterase, Aβ25-35, Commiphiora pubescens, Commiphora berryi, Commiphora caudata, Neuroprotective, SH-SY5Y Cell line}, doi = {10.5530/pj.2020.12.171}, author = {PS Dhivya and P Selvamani and S Latha and Vasudevan Mani and Nur Syamimi Mohd Azahan} }