List of Articles Acarbose

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  1 - Inhibitory Effect of Phallusia Nigra (Savigny, 1816) Extract on Activity of Alpha –Amylase
  Asmae Tajik Mousa Keshavarz Ahmad Homaei
  10.22034/ascij.2022.1938794.1293
  Increased blood sugar levels play an important role in the development of diabetes. Thus, inhibition of alpha-amylase enzyme inhibits the conversion of polysaccharides to glucose or reduces it. In diabetics, this enzyme can be effective in absorbing glucose from the gas More

  Increased blood sugar levels play an important role in the development of diabetes. Thus, inhibition of alpha-amylase enzyme inhibits the conversion of polysaccharides to glucose or reduces it. In diabetics, this enzyme can be effective in absorbing glucose from the gastrointestinal tract and preventing a rapid rise in blood sugar. Ascidians are known as a group of marine fauna rich in bioactive secondary metabolites. This study was aimed at evaluating the inhibitory effect of alpha-amylase activity on Phallusia nigra. Specimens of P. nigra belonged to Qeshm and Hormoz islands. Under vacuum, using a rotary evaporator, the samples were extracted from polarity, i.e. ethyl acetate, methanol and water-methanol, respectively. Moreover, the percentage of alpha-amylase inhibitor activity was evaluated based on DNSA method in vitro and acarbose was used as a positive control. The results revealed that among all extracts, the highest inhibitory percentage was related to acarbose at a concentration of 2000 µg/ml equal to 69.65% and the lowest value was related to water-methanolic extract at a concentration of 500 µg/ml and equal to 15.39%. The highest inhibitory activity was observed as acarbose>ethyl acetate>methanol>water-methanol. Furthermore, the results showed a direct relationship between the level of enzyme inhibition and the concentration of extracts. In this study, ethyl acetate extract had the highest inhibitory effect of alpha-amylase enzyme with IC50 equal to 1327.244 µg/ml, followed by methanolic extract with IC50 equal to 1529.68 µg/ml. Water-methanolic extract had the lowest inhibitory effect with IC50 and equal to 2334.01 µg/ml. The inhibitory percentage of acarbose was higher than other extracts (IC50=1158.40 µg/ml). Due to the inhibitory power of P. nigra extracts, they can be used in the future in the production of anti-diabetic drugs with minimal or no adverse side effects. Manuscript profile
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  2 - Inhibitory Effect of Sea Cucamber, Holothuria parva Extract on Activity of Alpha -Amylase
  Najibe Ghenaat Pishe Mousa Keshavarz Hamed Mir
  10.22034/ascij.2023.1989599.1501
  Alpha-amylase enzyme inhibitors prevent the conversion of polysaccharides into monosaccharides. Inhibiting this enzyme from the absorption of simple sugars in the digestive system and thus preventing the increase in blood glucose levels has been effective. The purpose o More

  Alpha-amylase enzyme inhibitors prevent the conversion of polysaccharides into monosaccharides. Inhibiting this enzyme from the absorption of simple sugars in the digestive system and thus preventing the increase in blood glucose levels has been effective. The purpose of this study is to investigate the effect of ethyl acetate, methanol and water-methanol extracts of Holothuria parva on alpha-amylase enzyme inhibition. In this research, first extraction was done from the body wall, intestines and viscera of Holothuria parva based on increasing polarity, and in the next step, alpha-amylase enzyme activity was determined in the presence of different extracts under enzyme activity measurement conditions by DNSA colorimetric method, and IC50 were obtained and compared with the amount of acarbose as a positive control. In this study, the results showed that the percentage of inhibition increased with the increase in the concentration of the extracts and among all the extracts, the highest inhibitory percentage related to acarbose at a concentration of 0.8 mg/ml equals 96.92% and the lowest amount related to the water-methanol extract of the body wall at a concentration of 0.2 mg/ml equals 61.79% and the inhibition percentage of acarbose in both body parts is higher than other extracts (IC50=88.18-91.74 mg/ml). Considering the inhibitory effect of extracts extracted from Holothuria parva species on alpha-amylase enzyme, in the future, it can be used in the field of producing antidiabetic drugs of marine origin with minimal adverse side effects. Manuscript profile