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      Pharmacological evaluation of embelin - chitosan nanoparticles as an antidiabetic agent

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          Abstract

          Embelin has been reported to possess variety of pharmacological activities such as androgenic antagonists, antiangiogenic, antibacterial, anticancer, anticonvulsant, antidiabetic, antidepressant, antihelmintic, antifertility, antihyperlipidemic, anti-inflammatory, antimalarial, antimitotic, antiobesity and antioxidant properties. The current research work aimed to study the hypoglycemic effect of embelin-chitosan nanoparticles (ECNPs) diabetic rats provoked by streptozotocin (STZ). Embelin nanoparticles (ENPs) were created by combining chitosan, a natural biopolymer, and glutaric acid, a new cross-linker. STZ 50 mg/kg was given intravenously into Sprague-Dawley rats weighing 250–300 g (75–90 days) to induce experimental diabetes. The antidiabetic efficacy of orally administered ECNPs in diabetic rats developed by STZ was investigated, as well as histological examination. When compared to diabetic control rats, ECNPs (25 mg/kg body weight and 50 mg kg body weight) and standard glibenclamide (10 mg/kg body weight) treated rodents exhibited a remarkable drop in glucose contents. Furthermore, histological research showed that ECNPs-treated rats were harmless up to amount of 25 mg/kg bwt. Thus current investigation reveals that ECNPs have antidiabetic potential and may be beneficial in treating hyperglycemia in people.

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          Most cited references17

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          The mechanism of alloxan and streptozotocin action in B cells of the rat pancreas.

          Alloxan and streptozotocin are widely used to induce experimental diabetes in animals. The mechanism of their action in B cells of the pancreas has been intensively investigated and now is quite well understood. The cytotoxic action of both these diabetogenic agents is mediated by reactive oxygen species, however, the source of their generation is different in the case of alloxan and streptozotocin. Alloxan and the product of its reduction, dialuric acid, establish a redox cycle with the formation of superoxide radicals. These radicals undergo dismutation to hydrogen peroxide. Thereafter highly reactive hydroxyl radicals are formed by the Fenton reaction. The action of reactive oxygen species with a simultaneous massive increase in cytosolic calcium concentration causes rapid destruction of B cells. Streptozotocin enters the B cell via a glucose transporter (GLUT2) and causes alkylation of DNA. DNA damage induces activation of poly ADP-ribosylation, a process that is more important for the diabetogenicity of streptozotocin than DNA damage itself. Poly ADP-ribosylation leads to depletion of cellular NAD+ and ATP. Enhanced ATP dephosphorylation after streptozotocin treatment supplies a substrate for xanthine oxidase resulting in the formation of superoxide radicals. Consequently, hydrogen peroxide and hydroxyl radicals are also generated. Furthermore, streptozotocin liberates toxic amounts of nitric oxide that inhibits aconitase activity and participates in DNA damage. As a result of the streptozotocin action, B cells undergo the destruction by necrosis.
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            Antidiabetic agents from medicinal plants.

            Currently available therapeutic options for non-insulin-dependent diabetes mellitus, such as dietary modification, oral hypoglycemics, and insulin, have limitations of their own. Many natural products and herbal medicines have been recommended for the treatment of diabetes. The present paper reviews medicinal plants that have shown experimental or clinical antidiabetic activity and that have been used in traditional systems of medicine; the review also covers natural products (active natural components and crude extracts) isolated from the medicinal plants and reported during 2001 to 2005. Many kinds of natural products, such as terpenoids, alkaloids, flavonoids, phenolics, and some others, have shown antidiabetic potential. Particularly, schulzeines A, B, and C, radicamines A and B, 2,5-imino-1,2,5-trideoxy-L-glucitol, beta-homofuconojirimycin, myrciacitrin IV, dehydrotrametenolic acid, corosolic acid (Glucosol), 4-(alpha-rhamnopyranosyl)ellagic acid, and 1,2,3,4,6-pentagalloylglucose have shown significant antidiabetic activities. Among active medicinal herbs, Momordica charantia L. (Cucurbitaceae), Pterocarpus marsupium Roxb. (Leguminoceae), and Trigonella foenum graecum L. (Leguminosae) have been reported as beneficial for treatment of type 2 diabetes.
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              Traditional plant medicines as treatments for diabetes.

              More than 400 traditional plant treatments for diabetes mellitus have been recorded, but only a small number of these have received scientific and medical evaluation to assess their efficacy. Traditional treatments have mostly disappeared in occidental societies, but some are prescribed by practitioners of alternative medicine or taken by patients as supplements to conventional therapy. However, plant remedies are the mainstay of treatment in underdeveloped regions. A hypoglycemic action from some treatments has been confirmed in animal models and non-insulin-dependent diabetic patients, and various hypoglycemic compounds have been identified. A botanical substitute for insulin seems unlikely, but traditional treatments may provide valuable clues for the development of new oral hypoglycemic agents and simple dietary adjuncts.
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                Author and article information

                Journal
                Indian J Pharmacol
                Indian J Pharmacol
                IJPharm
                Indian Journal of Pharmacology
                Wolters Kluwer - Medknow (India )
                0253-7613
                1998-3751
                Mar-Apr 2022
                10 May 2022
                : 54
                : 2
                : 126-130
                Affiliations
                [1 ] Associate Professor, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (Deemed University), Porur, Tamil Nadu, India
                [2 ] Professor and Head, Department of Biochemistry, St. Peter's Institute of Higher Education and Research, Avadi, Tamil Nadu, India
                [3 ] Professor, Sri Ramachandra Faculty of Pharmacy, Sri Ramachandra Institute of Higher Education and Research (Deemed University), Porur, Tamil Nadu, India
                [4 ] Sr. Principal Scientist, Head & Professor – AcSIR, Microbiology Division, Central Leather Research Institute, Adyar, Chennai, Tamil Nadu, India
                Author notes
                Address for correspondence: Dr. Arumugam Gnanamani, Microbiology Division, Central Leather Research Institute, Adyar, Chennai - 600 020, Tamil Nadu, India. E-mail: gnanamani3@ 123456gmail.com
                Article
                IJPharm-54-126
                10.4103/ijp.ijp_47_20
                9249157
                35546464
                3759ed11-8890-4949-b31b-87bde74f2e97
                Copyright: © 2022 Indian Journal of Pharmacology

                This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.

                History
                : 05 February 2020
                : 11 June 2021
                : 24 March 2022
                Categories
                Short Communication

                Pharmacology & Pharmaceutical medicine
                antidiabetic,chitosan,embelin,histopathological,nanoparticles,plasma glucose

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