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Lagerstroemia Speciosa .com ISSN : 0973-7847 .phcogrev www -June 2018 Official Publication of Phcog.Net January / 3 / Issue 2 2 ol 1 V Pharmacognosy Reviews Ÿ Volume 12 Ÿ Issue 23 Ÿ January-June 2018 Ÿ Pages 1-** Pharmacognosy Reviews spine 6.5 mm Pharmacogn. Rev. REVIEW ARTICLE A multifaceted peer reviewed journal in the field of Pharmacognosy and Natural Products www.phcogrev.com | www.phcog.net Revisiting Bungur (Lagerstroemia speciosa) from Indonesia as an Antidiabetic Agent, Its Mode of Action, and Phylogenetic Position Agustina Dwi Retno Nurcahyanti, Zita Arieselia1, Sandy Vitria Kurniawan1, Fitmawati Sofyan2, Michael Wink3 Department of Pharmacy, 1Department of Pharmacology, School of Medicine, Atma Jaya Catholic University of Indonesia, Jakarta, 2Department of Biology, Faculty of Science and Mathematics, Riau University, Riau, Indonesia, 3Department of Biology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Heidelberg, Germany ABSTRACT Worldwide, the diabetes epidemic is rapidly increasing and has become a growing health threat over the past few decades. The continuous investigation into the development of antidiabetic agents and treatments is crucial because current synthetic antidiabetic drugs cause adverse side effect and are often ineffective. Indonesia is blessed with a mega‑biodiversity of medicinal plants. Having an abundance of medicinal plant species has caused several problems, like the adulteration of medicinal plants when used as herbal products, and serious overharvesting resulting in the disappearance of the plants from nature. The DNA barcoding technique is a promising tool to authenticate the identity and phylogenetic position of a medicinal plant. Using DNA barcoding, a close genetic relationship of Bungur from Riau, Sumatra to related taxa from other areas is confirmed; it represents Lagerstroemia speciosa (Lythraceae). Moreover, the active secondary metabolites of Bungur are summarized and most importantly, the mechanism of action as an antidiabetic agent is described. Some of them are well‑known principles, and some are known as new mechanisms with the potential to be revisited. This report indicates that L. speciosa may have anti‑diabetic properties that might be useful in therapy of diabetes. More research is needed to determine possible side effects, and to identify its relevant chemical components. Key words: Antidiabetic, Bungur, Lagerstroemia speciosa, Lythraceae, Riau INTRODUCTION Diabetes causes economic instability, especially for those who are living in developing countries due to the lack of access to medical services Diabetes mellitus (DM) is a chronic metabolic disease characterized by and health insurance. Moreover, people with diabetes are at a high risk [1] elevated blood glucose levels, known as hyperglycemia. Comprehensive of occurring other health problems, such as cardiovascular disease,[3] studies suggest that there are two types of diabetes, namely, type 1 retinopathy,[4] nephropathy,[5] neuropathy,[6] and foot disorders.[7] In diabetes in which the pancreas is not able to produce enough insulin, addition, improper treatment of diabetes can cause severe complications. and type 2 diabetes when there is an insulin resistance or the body does Due to the various side effects of antidiabetic drugs, many scientists are not produce enough insulin. According to global preview, the diabetes currently developing alternative antidiabetic drugs from natural sources, epidemic has become a worldwide health threat. A 2015 report from such as medicinal plants which produce a high diversity of bioactive the International Diabetes Federation indicated that 415 million people secondary metabolites.[8,9] Before the administration of nutraceuticals worldwide, or one in 11 adults, have diabetes, and this number will or antidiabetic drugs from natural sources, it is important to understand [2] probably continue to rise to 642 million by 2040. According to the same their mechanisms of action so that they work efficiently when compared report, the Western Pacific area, including Indonesia, has the highest to synthetic antidiabetic drugs. incidence of people with diabetes.[2] Currently, there are a number of Natural products are re‑emerging as alternatives to pharmaceutical antidiabetic drugs and treatments, such as alpha‑glucosidase inhibitors, drugs due to their abundance and chemical diversity. Indonesian biguanides (metformin), meglitinides, thiazolidinediones (glitazones), traditional medicine has been used since ancient times to treat several incretin mimetics, dipeptidyl peptidase‑4 inhibitors, sulfonylureas, and diseases, including diabetes. Currently, data mining, screening, and combination treatments. Some of them have various adverse side effects computer modeling are possible approaches for drug discovery, in and are not fully effective in reducing blood glucose. addition to local wisdom of the traditional uses of medicinal plants. This review will explore the chemical diversity of the Lagerstroemia Correspondence: species (Lythraceae), which has a potential as anti‑diabetic agents. Dr.rer.nat. Agustina Dwi Retno Nurcahyanti, The mechanism of action will be also described to raise awareness of Department of Pharmacy, School of Medicine, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia. possible side effects. E‑mail: [email protected] This is an open access journal, and articles are distributed under the terms of the Access this article online Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as Quick Response Code: Website: appropriate credit is given and the new creations are licensed under the identical terms. www.phcogrev.com For reprints contact: [email protected] DOI: Cite this article as: Nurcahyanti AD, Arieselia Z, Kurniawan SV, Sofyan F, Wink M. 10.4103/phrev.phrev_20_17 Revisiting Bungur (Lagerstroemia speciosa) from indonesia as an antidiabetic agent, its mode of action, and phylogenetic position. Phcog Rev 2018;12:40-5. 40 © 2018 Pharmacognosy Reviews | Published by Wolters Kluwer - Medknow AGUSTINA DWI RETNO NURCAHYANTI, et al.: Revisiting Bungur (Lagerstroemia speciosa) from Indonesia MOLECULAR PHYLOGENY ANALYSIS OF • Superdivision: Spermatophyta LAGERSTROEMIA FROM RIAU‑INDONESIA, • Division: Magnoliophyta • Class: Magnoliopsida KNOWN AS BUNGUR • Subclass: Rosidae The evolutionary history was inferred using the maximum likelihood • Order: Myrtales method based on the General Time Reversible model.[10] The tree • Family: Lythraceae with the highest log likelihood (−1590,8817) is shown. The percentage • Genus: Lagerstroemia L of trees in which the associated taxa clustered together is shown next • Species: Lagerstroemia speciosa L. to the branches. Initial tree (s) for the heuristic search were obtained automatically by applying Neighbor‑Join and BioNJ algorithms to a L. speciosa is famous for its attractive and colorful flowers as shown matrix of pair‑wise distances estimated using the Maximum Composite in Figure 2. The origin of this plant is in South and Southeast Asia. Likelihood MCL approach, and then, selecting the topology with It has several local names[12] as summarized in Table 1. L. speciosa superior log‑likelihood value. A discrete Gamma distribution was used can be categorized as a small‑to‑medium‑sized deciduous or to model evolutionary rate differences among sites (5 categories (+G, semi‑deciduous shrub but can also include large trees that grow up parameter = 0,4876)). The rate variation model allowed for some sites to 40‑45 m in height. The bole is fairly straight to crooked, has a to be evolutionarily invariable ([+I], 28,8251% sites). The tree is drawn diameter of 100–150 cm, and is branchless for up to 18 m. It is often to scale, with branch lengths measured in the number of substitutions fluted and sometimes has small buttresses. The simple leaf form is per site. The analysis involved 13 nucleotide sequences. Codon positions obovate, opposite, and distichous. The stipules are minute or absent. st nd rd included were 1 +2 +3 . There were a total of 593 positions in the final The bark surface is smooth or exhibits small, papery flakes with a [11] dataset. Evolutionary analyses were conducted in MEGA 7. color of grey‑to‑light fawn‑brown in a mottled pattern. The inside Figure 1 shows the amplification of Internal Transcribed Species ITS bark is fibrous with a grey‑fawn to yellow color, which turns to dirty sequences of Lagerstroemia for DNA barcoding and thus shows the mauve or purple after some exposure. The crown is usually bushy genetic relationship with other Lagerstroemia species distributed outside and broad.[12] Indonesia (our unpublished work). The phylogenetic analyses are based The flowers are found in an axillary or terminal panicle and are large, on a representative sampling of the genus Lagerstroemia, which includes bell‑shaped, and showy. The calyx has 6–9 lobes and is funnel or 13 GenBank accessions. Another Lytheraceae, Lawsonia inermis serves as bell‑shaped. It often has 6 petals inserted near the mouth of the calyx an outgroup for the phylogeny reconstruction. As shown in Figure 1, the tube. The flowers have wrinkled petals and are white to pink or purple phylogeny reconstruction reveals two major clades, supported with high in color. There are many yellow stamens in several rows. The ovary is bootstrap P values. Lagerstroemia from Riau clusters together with L. speciosa superior, with 3–6 locules,
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