@article {758, title = {Alpha Mangostin and Xanthone Activity on Fasting Blood Glucose, Insulin and Langerhans Islet of Langerhans in Alloxan Induced Diabetic Mice}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {January 2019}, pages = {64-68}, type = {Original Article}, chapter = {64}, abstract = {

Objective: This research elaborated role of alpha mangostin and xanthone on fasting blood glucose, insulin and langerhans islet in alloxan induced diabetic mice. Methods: Fasting blood glucose, insulin and langerhans islet test were conducted using male Mus musculus mice, divided into 10 groups randomly, which were normal, control (alloxan induced only), glibenclamide, various doses of α-mangostin and xanthone (5, 10, 20 mg/kgbw). Mice were treated for 21 days. Overnight-fasted mice (12 h) were sacrificed by cervical decapitation on day 21st, following the ethical norms granted by the ethics committee. Fasting blood glucose and insulin plasma were checked. Pancreatic tissues were excised from sacrificed animals, and then fixed in 10 \% (v/v) neutral buffered formalin. Histologic observations for Langerhans area were performed after staining using Gomori staining method. Results: The effects of alpha mangostin and xanthone on fasting blood glucose different significantly to control, and were not significantly different from glibenclamide and metformin. Increasing alpha mangostin/xanthone dose from 5 mg/kgbw to 20 mg/bw also did not cause significant differences, although the best results were obtained at a dose of 20 mg/kgbw. Insulin plasma analize showed that there were no significant difference between alpha mangostin/xanthone to normal group, except xanthone 10 mg/kgbw. Langerhans area showed significant difference between alpha mangostin/xanthone to control group. But there{\textquoteright}s still had significant difference if we compare to glibenclamid/metformin group. Conclusion: Alpha mangostin and xanthone are two substances that showed antidiabetic effect on fasting blood glucose level, insulin plasma and Langerhans islet.

}, keywords = {Fasting blood glucose, Insulin plasma, Langerhans, Xanthone, α-mangostin}, doi = {10.5530/pj.2019.1.12}, author = {Welly Ratwita and Elin Yulinah Sukandar and I Ketut Adnyana and Neng Fisheri Kurniati} } @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} }