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Zolotova D, Teterovska R, Bandere D, Lauberte L, Niedra S. Antidiabetic Properties of the Root Extracts of Dandelion ( Taraxacum officinale) and Burdock ( Arctium lappa). PLANTS (BASEL, SWITZERLAND) 2024; 13:1021. [PMID: 38611548 PMCID: PMC11013470 DOI: 10.3390/plants13071021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/23/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024]
Abstract
Several preclinical studies suggest the potential of edible plants in controlling blood sugar levels and stabilizing diet. The goals of the study were to examine, analyze, and describe whether there are chemical compounds in dandelion and burdock roots that could have antidiabetic properties. The 70% ethyl alcohol and lyophilizate extracts (AE and LE, respectively), were used, and analyses were carried out on their total polysaccharide (TP), total phenolic content (TPC), tannin, and inulin. The antioxidant activity of extracts was determined using the DPPH (2,2-diphenyl-1-picrylhydrazyl) assay, and hypoglycemic properties were based on α-amylase activity. Liquid chromatography-mass spectrometry was used for the tentative identification of the chemical components. Qualitative techniques confirmed the presence of inulin in both roots. Analysis of TPC, tannin content, DPPH assay, and α-amylase activity revealed higher values for burdock compared to dandelion. However, dandelion exhibited higher TP content. Burdock contained a small amount of tannin, whereas the tannin content in dandelion was insignificant. All LE consistently exhibited higher values in all analyses and assays for all roots compared to AE. Despite burdock root showing overall better results, it is uncertain whether these plants can be recommended as antidiabetic agents without in vivo studies.
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Affiliation(s)
- Daria Zolotova
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Rīga Stradiņš University, LV-1007 Riga, Latvia; (R.T.); (D.B.)
| | - Renāte Teterovska
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Rīga Stradiņš University, LV-1007 Riga, Latvia; (R.T.); (D.B.)
- Department of Pharmaceuticals, Red Cross Medical College, Rīga Stradiņš University, LV-1007 Riga, Latvia
| | - Dace Bandere
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Rīga Stradiņš University, LV-1007 Riga, Latvia; (R.T.); (D.B.)
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, LV-1658 Riga, Latvia
| | - Liga Lauberte
- Laboratory of Finished Dosage Forms, Riga Stradiņš University, LV-1007 Riga, Latvia; (L.L.); (S.N.)
| | - Santa Niedra
- Laboratory of Finished Dosage Forms, Riga Stradiņš University, LV-1007 Riga, Latvia; (L.L.); (S.N.)
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Mamun MAA, Rakib A, Mandal M, Kumar S, Singla B, Singh UP. Polyphenols: Role in Modulating Immune Function and Obesity. Biomolecules 2024; 14:221. [PMID: 38397458 PMCID: PMC10887194 DOI: 10.3390/biom14020221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/02/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Polyphenols, long-used components of medicinal plants, have drawn great interest in recent years as potential therapeutic agents because of their safety, efficacy, and wide range of biological effects. Approximately 75% of the world's population still use plant-based medicinal compounds, indicating the ongoing significance of phytochemicals for human health. This study emphasizes the growing body of research investigating the anti-adipogenic and anti-obesity functions of polyphenols. The functions of polyphenols, including phenylpropanoids, flavonoids, terpenoids, alkaloids, glycosides, and phenolic acids, are distinct due to changes in chemical diversity and structural characteristics. This review methodically investigates the mechanisms by which naturally occurring polyphenols mediate obesity and metabolic function in immunomodulation. To this end, hormonal control of hunger has the potential to inhibit pro-obesity enzymes such as pancreatic lipase, the promotion of energy expenditure, and the modulation of adipocytokine production. Specifically, polyphenols affect insulin, a hormone that is essential for regulating blood sugar, and they also play a role, in part, in a complex web of factors that affect the progression of obesity. This review also explores the immunomodulatory properties of polyphenols, providing insight into their ability to improve immune function and the effects of polyphenols on gut health, improving the number of commensal bacteria, cytokine production suppression, and immune cell mediation, including natural killer cells and macrophages. Taken together, continuous studies are required to understand the prudent and precise mechanisms underlying polyphenols' therapeutic potential in obesity and immunomodulation. In the interim, this review emphasizes a holistic approach to health and promotes the consumption of a wide range of foods and drinks high in polyphenols. This review lays the groundwork for future developments, indicating that the components of polyphenols and their derivatives may provide the answer to urgent worldwide health issues. This compilation of the body of knowledge paves the way for future discoveries in the global treatment of pressing health concerns in obesity and metabolic diseases.
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Affiliation(s)
| | | | | | | | | | - Udai P. Singh
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, USA; (M.A.A.M.); (A.R.); (M.M.); (S.K.); (B.S.)
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Raina J, Firdous A, Singh G, Kumar R, Kaur C. Role of polyphenols in the management of diabetic complications. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 122:155155. [PMID: 37922790 DOI: 10.1016/j.phymed.2023.155155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Diabetes Mellitus is an endocrine disorder that will affect, about 693 million adults by 2045 worldwide, (>50% increase from 2017). The conventional treatment of the disease, include the oral hypoglycemic drugs which are given in combination with other drugs and are known to possess various adverse effects like gastrointestinal disturbance, nausea, water retention etc. PURPOSE: Due to the urgent need of combating this disorder without side effects, the alternative and complementary therapies should be explored due to their natural origins and comparable safety. Herbal sources serve as new leads, due to the presence of phytoconstituents with potential therapeutic properties, efficacy and safety. In this review, we tried to summarise the polyphenolic phytoconstituents effective in the treatment of diabetic complications. METHODS A systematic literature search was conducted using 4 databases (Google scholar, Pubmed, Scopus, Embase) for the identification of relevant data. Search was performed using various key words such as "diabetes", "polyphenols", "marine sources","anti-diabetic polyphenols". The in vitro studies involving the cell lines used in diabetes and animal models were also considered for inclusion. Additional research papers were identified by reviewing abstracts, scrutinizing reference lists, and reviewing previously published review articles. RESULTS Polyphenols, a group of phytoconstituents are known worldwide for their tremendous antioxidant potential. So, various research groups have explored their mechanism and therapeutic value in diabetic complications, to improve the insulin sensitivity and glucose metabolism, in controlling the glycemic conditions. CONCLUSION Polyphenols exhibit effective therapeutic potential in managing diabetic complications through their multifaceted mechanism of action. They exhibit antioxidative, anti-inflammatory, and anti-glycemic properties, which collectively contribute to their beneficial effects in mitigating diabetic complications. Thus, the inclusion of polyphenols into the diet, may be cosidered as an approach of managing diabetes on long term basis. In this review, we have tried to identify polyphenols effective in diabetes and summarize their mechanism of action along with their potential, for the treatment of diabetic complications.
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Affiliation(s)
- Jeevika Raina
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | | | - Gurvinder Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Rajesh Kumar
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Charanjit Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India.
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Chen J, Frempong KEB, Ding P, He G, Zhou Y, Kuang M, Wei Y, Zhou J. Plant polyphenol surfactant construction with strong surface activity and chelation properties as efficient decontamination of UO 22+ on cotton fabric. Int J Biol Macromol 2024; 254:127451. [PMID: 37871720 DOI: 10.1016/j.ijbiomac.2023.127451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/30/2023] [Accepted: 10/13/2023] [Indexed: 10/25/2023]
Abstract
Chemically synthesized surfactants have promising applications in the treatment of uranium, however, their hazardous environmental effects, non-biodegradability, and numerous drawbacks prevent them from being widely used in practice. Herein, we successfully synthesized a green chelating and foaming integrated surfactant (BTBS) by Mannich reaction and acylation of bayberry tannin for the effective removal of UO22+ from aqueous environments or solid surfaces. The as-prepared surfactant was systematically characterized by FT-IR, showing that the hydrophobic groups were successfully grafted onto tannin. The modified material showed better foaming and emulsifying properties, which proved this method could improve the amphiphilicity of tannin. Moreover, for the first time, a foam fractionation method in conjunction with a tannin-based surfactant was applied for UO22+ removal from water. This surfactant was used as a co-surfactant and could readily remove 90 % of UO22+ (20 mg L-1) from water. The removal of UO22+ could be completed in a short time (30 min), and the maximum adsorption capacity was determined as 175.9 mg g-1. This surfactant can also be used for efficient decontamination of uranium-contaminated cotton cloth with a high removal rate of 94.55 %. In addition, the mechanism studies show that the adsorption of BTBS for UO22+ can be mainly attributed to a chelating mechanism between UO22+ and the adjacent phenolic hydroxyls. The novel biomass-derived BTBS with advantages such as high capture capacity, environmental friendliness, and cost-effectiveness suggests that it plays an important role in the remediation of radionuclide pollution.
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Affiliation(s)
- Jialang Chen
- Engineering Research Center of Biomass Materials, Ministry of Education, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Kwame Eduam Baiden Frempong
- Engineering Research Center of Biomass Materials, Ministry of Education, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Pingping Ding
- The Collelge of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, PR China
| | - Guiqiang He
- Engineering Research Center of Biomass Materials, Ministry of Education, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Yan Zhou
- Mianyang Central Hospital, NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang, Sichuan 621000, PR China
| | - Meng Kuang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang, Henan 455000, PR China
| | - Yanxia Wei
- Engineering Research Center of Biomass Materials, Ministry of Education, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China.
| | - Jian Zhou
- Engineering Research Center of Biomass Materials, Ministry of Education, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China.
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Liu L, Jia W, Jiang S, Zhang G, Zhao J, Xu J, Wang L, Wu D, Tao J, Yue H, Zhao X. Inhibitory activities and rules of plant gallotannins with different numbers of galloyl moieties on sucrase, maltase and α-amylase in vitro and in vivo. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 120:155063. [PMID: 37716036 DOI: 10.1016/j.phymed.2023.155063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/18/2023] [Accepted: 08/30/2023] [Indexed: 09/18/2023]
Abstract
BACKGROUND α-Glucosidase inhibitors could effectively reduce postprandial blood glucose (PBG) levels and control the occurrence of complications of diabetes. Gallotannins (GTs) in plants have attracted much attention due to their significant α-glucosidase inhibitory activities in vitro. However, there is still a lack of systematic comparative studies to further elucidate inhibitory activities in vivo and in vitro of these compounds against α-glucosidase, especially for mammalian sucrase and maltase, and analyze their structure-activity relationship. PURPOSE Determine the in vitro and in vivo inhibitory activities of five GTs with different number of galloyl moieties (GMs) on sucrase, maltase and α-amylase, and elucidate the relationship between α-glucosidase inhibitory activities and the number and connection mode of GMs. METHODS Molecular docking and dynamics were used to study the binding mode and binding ability of five GTs against sucrase, maltase and α-amylase. Then, the inhibitory activities and inhibitory mechanisms of these compounds on sucrase, maltase and α-amylase in vitro were studied using inhibitory assay and enzyme inhibition kinetics. Further, the hypoglycemic effects in vivo of these compounds were demonstrated by three polysaccharides tolerance experiments on diabetes model mice. RESULTS The results of molecular docking showed that these compounds could bind to enzymes through hydrogen bonds, hydrophobic interactions, etc. In addition, the α-glucosidase inhibition comparative studies in vitro and in vivo demonstrated that the inhibitory activities of these compounds on all three sucrase, maltase and α-amylase were ranked as TA ≈ PGG > TeGG > TGG > 1GG, and their inhibitory activities increases with the increase in the number of GMs. Moreover, the hypoglycemic effects of 1,2,3,4,6-pentagalloylglucose (PGG) and tannic acid (TA) in vitro and in vivo were also confirmed to be equivalent to or even stronger than that of acarbose. CONCLUSION α-Glucosidase inhibitory activities in vitro and in vivo of GTs were positively correlated with the number of GTs, and the more the number, the stronger the activity. However, PGG with five GTs and TA with ten GTs showed almost identical α-glucosidase inhibitory activities, possibly due to the reduced binding force with the enzyme caused by spatial hindrance.
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Affiliation(s)
- Liying Liu
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Wenjing Jia
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Sirong Jiang
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Guoying Zhang
- College of Ecological Environmental engineering, Qinghai University, China
| | - Jianzhong Zhao
- Agricultural and Rural Science and Technology Guidance Development Service Center of Qinghai Province, China
| | - Jiyu Xu
- College of Ecological Environmental engineering, Qinghai University, China
| | - Luya Wang
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China; University of Chinese Academy of Sciences, China
| | - Di Wu
- College of Ecological Environmental engineering, Qinghai University, China
| | - Jihong Tao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China
| | - Huilan Yue
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China.
| | - Xiaohui Zhao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, CAS and Qinghai Provincial Key Laboratory of Tibetan Medicine Research, 23 Xinning Road, Xining, Qinghai 810008, China.
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Paes AS, Koga RDCR, Sales PF, Santos Almeida HK, Teixeira TACC, Carvalho JCT. Phytocompounds from Amazonian Plant Species against Acute Kidney Injury: Potential Nephroprotective Effects. Molecules 2023; 28:6411. [PMID: 37687240 PMCID: PMC10490259 DOI: 10.3390/molecules28176411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
There are several Amazonian plant species with potential pharmacological validation for the treatment of acute kidney injury, a condition in which the kidneys are unable to adequately filter the blood, resulting in the accumulation of toxins and waste in the body. Scientific production on plant compounds capable of preventing or attenuating acute kidney injury-caused by several factors, including ischemia, toxins, and inflammation-has shown promising results in animal models of acute kidney injury and some preliminary studies in humans. Despite the popular use of Amazonian plant species for kidney disorders, further pharmacological studies are needed to identify active compounds and subsequently conduct more complex preclinical trials. This article is a brief review of phytocompounds with potential nephroprotective effects against acute kidney injury (AKI). The classes of Amazonian plant compounds with significant biological activity most evident in the consulted literature were alkaloids, flavonoids, tannins, steroids, and terpenoids. An expressive phytochemical and pharmacological relevance of the studied species was identified, although with insufficiently explored potential, mainly in the face of AKI, a clinical condition with high morbidity and mortality.
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Affiliation(s)
- Alberto Souza Paes
- Pharmaceutical Innovation Program, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil; (A.S.P.); (R.d.C.R.K.); (P.F.S.); (T.A.C.C.T.)
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
| | - Rosemary de Carvalho Rocha Koga
- Pharmaceutical Innovation Program, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil; (A.S.P.); (R.d.C.R.K.); (P.F.S.); (T.A.C.C.T.)
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
| | - Priscila Faimann Sales
- Pharmaceutical Innovation Program, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil; (A.S.P.); (R.d.C.R.K.); (P.F.S.); (T.A.C.C.T.)
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
| | - Hellen Karine Santos Almeida
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
- University Hospital, Federal University of Amapá, Rodovia Josmar Chaves Pinto, km 02, Macapá CEP 68903-419, Amapá, Brazil
| | - Thiago Afonso Carvalho Celestino Teixeira
- Pharmaceutical Innovation Program, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil; (A.S.P.); (R.d.C.R.K.); (P.F.S.); (T.A.C.C.T.)
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
- University Hospital, Federal University of Amapá, Rodovia Josmar Chaves Pinto, km 02, Macapá CEP 68903-419, Amapá, Brazil
| | - José Carlos Tavares Carvalho
- Pharmaceutical Innovation Program, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil; (A.S.P.); (R.d.C.R.K.); (P.F.S.); (T.A.C.C.T.)
- Research Laboratory of Drugs, Department of Biological and Health Sciences, Federal University of Amapá, Rodovia Juscelino Kubitschek, km 02, Macapá CEP 68903-419, Amapá, Brazil;
- University Hospital, Federal University of Amapá, Rodovia Josmar Chaves Pinto, km 02, Macapá CEP 68903-419, Amapá, Brazil
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Kashtoh H, Baek KH. New Insights into the Latest Advancement in α-Amylase Inhibitors of Plant Origin with Anti-Diabetic Effects. PLANTS (BASEL, SWITZERLAND) 2023; 12:2944. [PMID: 37631156 PMCID: PMC10458243 DOI: 10.3390/plants12162944] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023]
Abstract
The rising predominance of type 2 diabetes, combined with the poor medical effects seen with commercially available anti-diabetic medications, has motivated the development of innovative treatment approaches for regulating postprandial glucose levels. Natural carbohydrate digestion enzyme inhibitors might be a viable option for blocking dietary carbohydrate absorption with fewer side effects than manufactured medicines. Alpha-amylase is a metalloenzyme that facilitates digestion by breaking down polysaccharides into smaller molecules such as maltose and maltotriose. It also contributes to elevated blood glucose levels and postprandial hyperglycemia. As a result, scientists are being urged to target α-amylase and create inhibitors that can slow down the release of glucose from carbohydrate chains and prolong its absorption, thereby resulting in lower postprandial plasma glucose levels. Natural α-amylase inhibitors derived from plants have gained popularity as safe and cost-effective alternatives. The bioactive components responsible for the inhibitory actions of various plant extracts have been identified through phytochemical research, paving the way for further development and application. The majority of the findings, however, are based on in vitro investigations. Only a few animal experiments and very few human investigations have confirmed these findings. Despite some promising results, additional investigation is needed to develop feasible anti-diabetic drugs based on plant-derived pancreatic α-amylase inhibitors. This review summarizes the most recent findings from research on plant-derived pancreatic α-amylase inhibitors, including plant extracts and plant-derived bioactive compounds. Furthermore, it offers insights into the structural aspects of the crucial therapeutic target, α-amylases, in addition to their interactions with inhibitors.
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Affiliation(s)
| | - Kwang-Hyun Baek
- Department of Biotechnology, Yeungnam University, Gyeongsan 38541, Republic of Korea;
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Yadav N, Palkhede JD, Kim SY. Anti-Glucotoxicity Effect of Phytoconstituents via Inhibiting MGO-AGEs Formation and Breaking MGO-AGEs. Int J Mol Sci 2023; 24:ijms24087672. [PMID: 37108833 PMCID: PMC10141761 DOI: 10.3390/ijms24087672] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The therapeutic benefits of phytochemicals in the treatment of various illnesses and disorders are well documented. They show significant promise for the discovery and creation of novel medications for treating a variety of human diseases. Numerous phytoconstituents have shown antibiotic, antioxidant, and wound-healing effects in the conventional system. Traditional medicines based on alkaloids, phenolics, tannins, saponins, terpenes, steroids, flavonoids, glycosides, and phytosterols have been in use for a long time and are crucial as alternative treatments. These phytochemical elements are crucial for scavenging free radicals, capturing reactive carbonyl species, changing protein glycation sites, inactivating carbohydrate hydrolases, fighting pathological conditions, and accelerating the healing of wounds. In this review, 221 research papers have been reviewed. This research sought to provide an update on the types and methods of formation of methylglyoxal-advanced glycation end products (MGO-AGEs) and molecular pathways induced by AGEs during the progression of the chronic complications of diabetes and associated diseases as well as to discuss the role of phytoconstituents in MGO scavenging and AGEs breaking. The development and commercialization of functional foods using these natural compounds can provide potential health benefits.
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Affiliation(s)
- Neera Yadav
- College of Pharmacy, Gachon University, #191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
- School of Medicine, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jyoti Dnyaneshwar Palkhede
- Department of Chemistry, College of Pharmacy, Gachon University, #191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Sun-Yeou Kim
- College of Pharmacy, Gachon University, #191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea
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Zhang L, Deng M, Wang SY, Ding Q, Liu JH, Xie X, Huang YH, Tu ZC. Mitigation of Paeoniae Radix Alba extracts on H 2O 2-induced oxidative damage in HepG2 cells and hyperglycemia in zebrafish, and identification of phytochemical constituents. Front Nutr 2023; 10:1135759. [PMID: 36908919 PMCID: PMC9995737 DOI: 10.3389/fnut.2023.1135759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 02/07/2023] [Indexed: 02/25/2023] Open
Abstract
Paeoniae Radix Alba (PRA), as a Traditional Chinese Medicine, is widely used in Chinese cuisine due to high health-benefits and nutrition, but the effect of different polarity of solvents on the extraction of antioxidant and hypoglycemic constituents, as well as the major active compounds remain unclear. In this research, 40, 70, and 95% ethanol were firstly applied to extract the polyphenols from PRA, the extraction yields, total phenolics, and total flavonoids content, free radical scavenging ability, α-glucosidase inhibition ability, and anti-glycation ability of extracts were evaluated spectroscopically. The oxidative damage protection, hypoglycemic activity, and alleviation on peripheral nerve damage were evaluated by H2O2-induced HepG2 cells and hyperglycemic zebrafish models. UPLC-QTOF-MS/MS was used to identify the major chemical constituents. The results showed that 40, 70, and 95% ethanol exhibited insignificant difference on the extraction of phenolics and flavonoids from PRA. All extracts showed promising DPPH⋅ and ABTS⋅+ scavenging ability, α-glucosidase inhibition and anti-glycation ability. In addition, PRA extracts could restore the survival rate of HepG2 cells induced by H2O2, and alleviate the oxidative stress by reducing the content of MDA and increasing the levels of SOD, CAT, and GSH-Px. The 70% ethanol extract could also mitigate the blood glucose level and peripheral motor nerve damage of hyperglycemic zebrafish. Thirty-five compounds were identified from 70% ethanol extract, gallotannins, gallic acid and its derivatives, and paeoniflorin and its derivatives were the dominant bioactive compounds. Above results could provide important information for the value-added application of PRA in functional food and medicinal industry.
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Affiliation(s)
- Lu Zhang
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China.,Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, Jiangxi, China
| | - Mei Deng
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Si-Yu Wang
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Qiao Ding
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Jia-Hui Liu
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Xing Xie
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Yun-Hong Huang
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Zong-Cai Tu
- National R&D Center for Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
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Chanu KD, Sharma N, Kshetrimayum V, Chaudhary SK, Ghosh S, Haldar PK, Mukherjee PK. Ageratina adenophora (Spreng.) King & H. Rob. Standardized leaf extract as an antidiabetic agent for type 2 diabetes: An in vitro and in vivo evaluation. Front Pharmacol 2023; 14:1178904. [PMID: 37138848 PMCID: PMC10149788 DOI: 10.3389/fphar.2023.1178904] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/04/2023] [Indexed: 05/05/2023] Open
Abstract
Type 2 diabetes has become one of the major health concerns of the 21st century, marked by hyperglycemia or glycosuria, and is associated with the development of several secondary health complications. Due to the fact that chemically synthesized drugs lead to several inevitable side effects, new antidiabetic medications from plants have gained substantial attention. Thus, the current study aims to evaluate the antidiabetic capacity of the Ageratina adenophora hydroalcoholic (AAHY) extract in streptozotocin-nicotinamide (STZ-NA)-induced diabetic Wistar albino rats. The rats were segregated randomly into five groups with six rats each. Group I was normal control, and the other four groups were STZ-NA-induced. Group II was designated diabetic control, and group III, IV, and V received metformin (150 mg/kg b.w.) and AAHY extract (200 and 400 mg/kg b.w.) for 28 days. Fasting blood glucose, serum biochemicals, liver and kidney antioxidant parameters, and pancreatic histopathology were observed after the experimental design. The study concludes that the AAHY extract has a significant blood glucose lowering capacity on normoglycemic (87.01 ± 0.54 to 57.21 ± 0.31), diabetic (324 ± 2.94 to 93 ± 2.04), and oral glucose-loaded (117.75 ± 3.35 to 92.75 ± 2.09) Wistar albino rats. The in vitro studies show that the AAHY extract has α-glucosidase and α-amylase inhibitory activities which can restore the altered blood glucose level, glycated hemoglobin, body weight, and serum enzymes such as serum glutamic pyruvic transaminase, serum glutamic oxaloacetic transaminase, serum alkaline phosphatase, total protein, urea, and creatinine levels close to the normal range in the treated STZ-NA-induced diabetic rats. The evaluation of these serum biochemicals is crucial for monitoring the diabetic condition. The AAHY extract has significantly enhanced tissue antioxidant parameters, such as superoxide dismutase, glutathione, and lipid peroxidation, close to normal levels. The presence of high-quantity chlorogenic (6.47% w/w) and caffeic (3.28% w/w) acids as some of the major phytoconstituents may contribute to the improvement of insulin resistance and oxidative stress. The study provides scientific support for the utilization of A. adenophora to treat type 2 diabetes in the STZ-NA-induced diabetic rat model. Although the preventive role of the AAHY extract in treating Wistar albino rat models against type 2 diabetes mellitus is undeniable, further elaborative research is required for efficacy and safety assessment in human beings.
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Affiliation(s)
- Khaidem Devika Chanu
- Institute of Bio-resources and Sustainable Development (IBSD), Imphal, Manipur, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, India
| | - Nanaocha Sharma
- Institute of Bio-resources and Sustainable Development (IBSD), Imphal, Manipur, India
- *Correspondence: Nanaocha Sharma,
| | - Vimi Kshetrimayum
- Institute of Bio-resources and Sustainable Development (IBSD), Imphal, Manipur, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Deemed to Be University, Bhubaneswar, Odisha, India
| | | | - Suparna Ghosh
- School of Natural Product Studies, Department of Pharmaceutical Technology, Jadavpur University (JU), Kolkata, West Bengal, India
| | - Pallab Kanti Haldar
- School of Natural Product Studies, Department of Pharmaceutical Technology, Jadavpur University (JU), Kolkata, West Bengal, India
| | - Pulok K. Mukherjee
- Institute of Bio-resources and Sustainable Development (IBSD), Imphal, Manipur, India
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Sasani N, Kazemi A, Babajafari S, Amiri‐Ardekani E, Rezaiyan M, Barati‐Boldaji R, Mazloomi SM, Clark CCT, Ashrafi‐Dehkordi E. The effect of acorn muffin consumption on glycemic indices and lipid profile in type 2 diabetic patients: A randomized double-blind placebo-controlled clinical trial. Food Sci Nutr 2022; 11:883-891. [PMID: 36789037 PMCID: PMC9922149 DOI: 10.1002/fsn3.3123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 09/27/2022] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
Acorn is a nutritious fruit with the reported potential of ameliorating diseases, including diabetes. This research aimed to assess the effects of acorn muffin consumption on glycemic, lipid indices, and appetite in patients with type 2 diabetes. Sixty-six subjects were dichotomized to receive either one muffin containing 10 grams of acorn flour or a placebo muffin containing white wheat flour (no bran), per day, for 8 weeks. Acorn muffin consumption improved glycated hemoglobin (p = .06, mean difference [MD] = -0.65), triglyceride (p = .06, MD = -36.38), and high-density lipoprotein (p = .05, MD = 1.30), albeit only marginally significantly. Among appetite parameters, hunger, desire to eat, and prospective to eat were significantly lower, and satiety and fullness were significantly higher, in the acorn muffin group. In conclusion, acorn muffins could be utilized as an adjuvant therapy to control appetite and ameliorate glycated hemoglobin in patients with type 2 diabetes. However, further investigations are required for a more comprehensive conclusion.
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Affiliation(s)
- Najmeh Sasani
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
| | - Asma Kazemi
- Nutrition Research CenterShiraz University of Medical SciencesShirazIran
| | - Siavash Babajafari
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
| | - Ehsan Amiri‐Ardekani
- Department of Phytopharmaceuticals (Traditional Pharmacy)Shiraz University of Medical SciencesShirazIran
| | - Mojtaba Rezaiyan
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
| | - Reza Barati‐Boldaji
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
| | - Seyed Mohammad Mazloomi
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
| | | | - Elham Ashrafi‐Dehkordi
- Nutrition Research Center, School of Nutrition and Food SciencesShiraz University of Medical SciencesShirazIran
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12
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Chaturvedi S, Chakraborty S. Optimization of fermentation conditions of synbiotic legume‐based beverages and study of their antimicrobial and proteolytic activity. J Food Sci 2022; 87:5070-5088. [DOI: 10.1111/1750-3841.16357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 09/18/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Smriti Chaturvedi
- Department of Food Engineering and Technology Institute of Chemical Technology Mumbai India
| | - Snehasis Chakraborty
- Department of Food Engineering and Technology Institute of Chemical Technology Mumbai India
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13
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Heckmann M, Sadova N, Drotarova I, Atzmüller S, Schwarzinger B, Guedes RMC, Correia PA, Hirtenlehner S, Potthast C, Klanert G, Weghuber J. Extracts Prepared from Feed Supplements Containing Wood Lignans Improve Intestinal Health by Strengthening Barrier Integrity and Reducing Inflammation. Molecules 2022; 27:molecules27196327. [PMID: 36234864 PMCID: PMC9572150 DOI: 10.3390/molecules27196327] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/21/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Lignans are known to exhibit a broad spectrum of biological activities, indicating their potential as constituents of feed supplements. This study investigated two extracts derived from the feed supplements ‘ROI’ and ‘Protect’—which contain the wood lignans magnolol and honokiol (‘ROI’), or soluble tannins additional to the aforementioned lignans (‘Protect’)—and their impact on selected parameters of intestinal functionality. The antioxidant and anti-inflammatory properties of the extracts were determined by measuring their effects on reactive oxygen species (ROS) and pro-inflammatory cytokine production in vitro. The impact on intestinal barrier integrity was evaluated in Caco-2 cells and Drosophila melanogaster by examining leaky gut formation. Furthermore, a feeding trial using infected piglets was conducted to study the impact on the levels of superoxide dismutase, glutathione and lipid peroxidation. The Protect extract lowered ROS production in Caco-2 cells and reversed the stress-induced weakening of barrier integrity. The ROI extract inhibited the expression or secretion of interleukin-8 (IL-8), interleukin-6 (IL-6), interleukin-1β (IL-1β) and tumor necrosis factor α (TNFα). Moreover, the ROI extract decreased leaky gut formation and mortality rates in Drosophila melanogaster. Dietary supplementation with Protect improved the antioxidant status and barrier integrity of the intestines of infected piglets. In conclusion, wood lignan-enriched feed supplements are valuable tools that support intestinal health by exerting antioxidant, anti-inflammatory and barrier-strengthening effects.
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Affiliation(s)
- Mara Heckmann
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Nadiia Sadova
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
| | - Ivana Drotarova
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Stefanie Atzmüller
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Bettina Schwarzinger
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Roberto Mauricio Carvalho Guedes
- Department of Veterinary Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 130161-970, Brazil
| | - Paula Angelica Correia
- Department of Veterinary Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte 130161-970, Brazil
| | | | | | - Gerald Klanert
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
| | - Julian Weghuber
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria
- FFoQSI GmbH–Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria
- Correspondence:
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14
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Amssayef A, Bouadid I, Eddouks M. Oakmoss Exhibits Antihyperglycemic Activity in Streptozotocin-Induced Diabetic Rats. Cardiovasc Hematol Disord Drug Targets 2022; 22:CHDDT-EPUB-121608. [PMID: 35297355 DOI: 10.2174/1871529x22666220316100022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/26/2021] [Accepted: 12/22/2021] [Indexed: 11/22/2022]
Abstract
AIMS The study aimed to assess the antidiabetic effect of Oakmoss. BACKGROUND Lichens species are dual organisms consisting of a mycobiont (Fungi) and a photoautotrophic partner (Algae). They are widely used in traditional medicine as a treatment against diabetes. OBJECTIVE This study was designed to assess the antihyperglycemic activity as well as the antihyperlipidemic capacity of Oakmoss (Evernia prunastri (L.)) in normal and streptozotocin(STZ)-induced diabetic rats. METHODS This study has evaluated the effects of aqueous extract of Oakmoss at a dose of 60 mg/kg on blood glucose levels and lipid profile in normal and STZ-induced diabetic rats. Histopathological examination of liver, determination of glycogen content in liver and skeletal muscles (EDL and soleus), antioxidant activity, and phytochemical investigation were also performed. RESULTS Both single and repeated oral doses of Oakmoss (60 mg/kg) produced a significant reduction of blood glucose, triglycerides and very low-density lipoprotein (VLDL) levels in diabetic rats. Furthermore, repeated oral administration of Oakmoss during 7 days ameliorated the liver function by increasing its glycogen content and improving its histological architecture in treated diabetic rats. In addition, the aqueous extract of Oakmoss exhibited an antioxidant activity and showed richness in certain phytochemicals especially in phenolic acids and flavonoids. CONCLUSION Oakmoss, a lichen species, exhibits a potential effect on improving hyperglycemia and hypertriglyceridemia in diabetic rats.
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Affiliation(s)
- Ayoub Amssayef
- Team of ETHNOPHAR, Faculty of Science and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000. Errachidia. Morocco
| | - Ismail Bouadid
- Team of ETHNOPHAR, Faculty of Science and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000. Errachidia. Morocco
| | - Mohamed Eddouks
- Team of ETHNOPHAR, Faculty of Science and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000. Errachidia. Morocco
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15
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Omar N, Ismail CAN, Long I. Tannins in the Treatment of Diabetic Neuropathic Pain: Research Progress and Future Challenges. Front Pharmacol 2022; 12:805854. [PMID: 35082680 PMCID: PMC8784866 DOI: 10.3389/fphar.2021.805854] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 12/15/2021] [Indexed: 12/04/2022] Open
Abstract
Diabetes mellitus and its consequences continue to put a significant demand on medical resources across the world. Diabetic neuropathic pain (DNP) is a frequent diabetes mellitus chronic microvascular outcome. Allodynia, hyperalgesia, and aberrant or lack of nerve fibre sensation are all symptoms of DNP. These clinical characteristics will lead to worse quality of life, sleep disruption, depression, and increased mortality. Although the availability of numerous medications that alleviate the symptoms of DNP, the lack of long-term efficacy and unfavourable side effects highlight the urgent need for novel treatment strategies. This review paper systematically analysed the preclinical research on the treatment of DNP using plant phytochemicals that contain only tannins. A total of 10 original articles involved in in-vivo and in-vitro experiments addressing the promising benefits of phytochemical tannins on DNP were examined between 2008 and 2021. The information given implies that these phytochemicals may have relevant pharmacological effects on DNP symptoms through their antihyperalgesic, anti-inflammatory, and antioxidant properties; however, because of the limited sample size and limitations of the studies conducted so far, we were unable to make definitive conclusions. Before tannins may be employed as therapeutic agents for DNP, more study is needed to establish the specific molecular mechanism for all of these activities along the pain pathway and examine the side effects of tannins in the treatment of DNP.
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Affiliation(s)
- Norsuhana Omar
- Department of Physiology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Che Aishah Nazariah Ismail
- Department of Physiology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Idris Long
- Biomedical Science programme, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Malaysia
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16
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Huo Y, Zhao X, Zhao J, Kong X, Li L, Yuan T, Xu J. Hypoglycemic effects of Fu-Pen-Zi (Rubus chingii Hu) fruit extracts in streptozotocin-induced type 1 diabetic mice. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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17
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Identification and Characterization of Glucosyltransferase That Forms 1-Galloyl- β-d-Glucogallin in Canarium album L., a Functional Fruit Rich in Hydrolysable Tannins. Molecules 2021; 26:molecules26154650. [PMID: 34361803 PMCID: PMC8347697 DOI: 10.3390/molecules26154650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 12/29/2022] Open
Abstract
Hydrolysable tannins (HTs) are useful secondary metabolites that are responsible for pharmacological activities and astringent taste, flavor, and quality in fruits. They are also the main polyphenols in Canarium album L. (Chinese olive) fruit, an interesting and functional fruit that has been cultivated for over 2000 years. The HT content of C. album fruit was 2.3-13 times higher than that of berries with a higher content of HT. 1-galloyl-β-d-glucose (βG) is the first intermediate and the key metabolite in the HT biosynthesis pathway. It is catalyzed by UDP-glucosyltransferases (UGTs), which are responsible for the glycosylation of gallic acid (GA) to form βG. Here, we first reported 140 UGTs in C. album. Phylogenetic analysis clustered them into 14 phylogenetic groups (A, B, D-M, P, and Q), which are different from the 14 typical major groups (A~N) of Arabidopsis thaliana. Expression pattern and correlation analysis showed that UGT84A77 (Isoform0117852) was highly expressed and had a positive correlation with GA and βG content. Prokaryotic expression showed that UGT84A77 could catalyze GA to form βG. These results provide a theoretical basis on UGTs in C. album, which will be helpful for further functional research and availability on HTs and polyphenols.
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18
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Plants Secondary Metabolites as Blood Glucose-Lowering Molecules. Molecules 2021; 26:molecules26144333. [PMID: 34299610 PMCID: PMC8307461 DOI: 10.3390/molecules26144333] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 02/06/2023] Open
Abstract
Recently, significant advances in modern medicine and therapeutic agents have been achieved. However, the search for effective antidiabetic drugs is continuous and challenging. Over the past decades, there has been an increasing body of literature related to the effects of secondary metabolites from botanical sources on diabetes. Plants-derived metabolites including alkaloids, phenols, anthocyanins, flavonoids, stilbenoids, saponins, tannins, polysaccharides, coumarins, and terpenes can target cellular and molecular mechanisms involved in carbohydrate metabolism. In addition, they can grant protection to pancreatic beta cells from damage, repairing abnormal insulin signaling, minimizing oxidative stress and inflammation, activating AMP-activated protein kinase (AMPK), and inhibiting carbohydrate digestion and absorption. Studies have highlighted many bioactive naturally occurring plants' secondary metabolites as candidates against diabetes. This review summarizes the current knowledge compiled from the latest studies published during the past decade on the mechanism-based action of plants-derived secondary metabolites that can target various metabolic pathways in humans against diabetes. It is worth mentioning that the compiled data in this review will provide a guide for researchers in the field, to develop candidates into environment-friendly effective, yet safe antidiabetics.
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Ajebli M, Eddouks M. Phytotherapy of Hypertension: An Updated Overview. Endocr Metab Immune Disord Drug Targets 2021; 20:812-839. [PMID: 31880255 DOI: 10.2174/1871530320666191227104648] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cardiovascular disorders are the leading cause of morbidity and mortality throughout the globe. Hypertension is the main risk factor that contributes to the development of many diseases. The use of herbal therapies, medicinal plants and their derivatives for the remedy and management of hypertension is well-recognized and popular among a wide part of the world population. METHODS The aim of the current review was to collect, treat, and critically analyze the published research studies relative to experimental and clinical investigations which have studied the blood pressure lowering abilities of medicinal plant derivatives in the last decade. This review was organized into three principal axes; the first axis was attributed to the in vivo and in vitro experimental studies; the second treated the clinical trials; while, the last one is devoted to analyze the mechanisms of action underlying the therapeutic antihypertensive effectiveness of phytochemicals. RESULTS Different types of extracts and isolated molecules obtained from a large variety of species demonstrated their efficiency in improving the increase of blood pressure either experimentally or clinically. Medicinal species such as garlic (Allium sativum), celery (Apium graveolens), Black Cumin (Nigella sativa) and Ginseng (Panax) are among the most common and therapeutically used plant derivatives for controlling hypertension while Asteraceae, Apiaceae and Rosaceae are among the botanical families which were frequently studied in the last decade. Isolated compounds such as allicin and apigenin have received more interest in this field. Recent evidence from clinical trials suggests that a wide variety of herbal preparations and plant extracts or natural isolated compounds have a favorable therapeutic impact on blood flow. Interestingly, phytochemicals can either act directly on blood vessels via a vasorelaxant effect involving a variety of signaling cascades or indirectly through inhibiting or stimulating diversity of systems such as angiotensin-converting enzyme (ACE), renin-angiotensin system (RAS) or the diuretic activity. Hence, based on the findings of the present review medicinal plant derivatives could be used as preventive and curative agents in the case of cardiovascular disorders, particularly hypertension and could play a promoting function for the discovery of new antihypertensive agents. CONCLUSION The analysis of the published data shows that a great effort remains to be done to investigate the medicinal plants cited as antihypertensive through published ethnopharmacological surveys. The analysis of the literature in this field shows the lack of standardization at the level of experimental study methods as well as the need to study purified molecules. Moreover, the mechanistic studies when they exist remain in the whole partial. On the other hand, few advanced clinical studies have been conducted. Finally, the determination of the efficacy/safety ratio remains absent in almost all studies.
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Affiliation(s)
- Mohammed Ajebli
- Department of Biology, Faculty of Sciences and Techniques Errachidia, Team of Endocrine Physiology and Pharmacology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco
| | - Mohamed Eddouks
- Department of Biology, Faculty of Sciences and Techniques Errachidia, Team of Endocrine Physiology and Pharmacology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco
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He Y, Pan L, Yang T, Wang W, Li C, Chen B, Shen Y. Metabolomic and Confocal Laser Scanning Microscopy (CLSM) Analyses Reveal the Important Function of Flavonoids in Amygdalus pedunculata Pall Leaves With Temporal Changes. FRONTIERS IN PLANT SCIENCE 2021; 12:648277. [PMID: 34093611 PMCID: PMC8170035 DOI: 10.3389/fpls.2021.648277] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Amygdalus pedunculata Pall [Rosaceae, Prunus, Prunus pedunculata (Pall.) Maxim.] belongs to the Rosaceae family and is resistant to cold and drought. Ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry and metabolomics were used to track the changes in bioactive metabolites during several stages of Amygdalus pedunculata Pall growth. A total of 827 different metabolites were detected, including 169 flavonoids, 68 organic acids, 35 terpenoids and 2 tannins. Flavonoid biosynthesis and flavone and flavonol biosynthesis were the main synthetic sources of flavonoids. Quercetin, isoquercitrin, and epicatechin as biomarkers related to growth and development were found. Quercetin connects the biosynthesis of flavonoids and the biosynthesis of flavones and flavonols. The contents of isoquercitrin and epicatechin increased uniformly during the whole growth process from the flowering stage to the fruit ripening stage, indicating that play key roles in the fruit growth and ripening stages of this plant. The tissue location and quantitative analysis of flavonoids in leaves at different stages were performed by confocal laser scanning microscopy. The flavonoids were mainly distributed in the palisade tissue and spongy tissue, indicating the need for protection of these sensitive tissues in particular. Through comprehensive and systematic analysis, the temporal distribution of flavonoids in the process of their leaves growth was determined. These results clarify the important role of flavonoids in the developmental process of Amygdalus pedunculata Pall.
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Affiliation(s)
- Yueyue He
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an, China
| | - Lei Pan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an, China
| | - Tao Yang
- Shaanxi Academy of Forestry, Xi’an, China
- Technology Research Center of Amygdalus pedunculata of State Forestry and Grassland Administration, Yulin, China
| | - Wei Wang
- Key Laboratory of Silviculture of the State Forestry Administration, The Institute of Forestry, The Chinese Academy of Forestry, Beijing, China
| | - Cong Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an, China
| | - Bang Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an, China
| | - Yehua Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an, China
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Gomes JHDS, Mbiakop UC, Oliveira RL, Stehmann JR, Pádua RMD, Cortes SF, Braga FC. Polyphenol-rich extract and fractions of Terminalia phaeocarpa Eichler possess hypoglycemic effect, reduce the release of cytokines, and inhibit lipase, α-glucosidase, and α-amilase enzymes. JOURNAL OF ETHNOPHARMACOLOGY 2021; 271:113847. [PMID: 33515684 DOI: 10.1016/j.jep.2021.113847] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/08/2021] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE species of Terminalia (Combretaceae) are used to treat diabetes and metabolic disorders in Asia, Africa, and America. Terminalia phaeocarpa Eichler is an endemic tree from Brazil, popularly known as capitão. This species is closely related to Terminalia argentea Mart., also vulgarly known as capitão, a native but not endemic tree. Due to their phenotype similarity, these species might eventually prove inseparable and they are indistinctly used by locals to treat diabetes, among other diseases. The potential antidiabetic effect of T. argentea has been previously reported, whereas the biological effects and chemical composition of T. phaeocarpa have never been addressed so far. AIM OF THE STUDY investigate the hypoglycaemic effect of an ethanol extract (EE) of T. phaeocarpa leaves and its ethyl acetate (FrEtOAc) and hydromethanolic (FrMEOH) fractions, in addition to their activity on the release of pro-inflammatory mediators and inhibition of lipase, α-amylase, and α-glucosidase enzymes. Additionally, it aimed to characterize the chemical composition of the extract and fractions, seeking to identify the compounds related to the biological activities. MATERIALS AND METHODS The effect on the release of TNF-α, IL-1β, and CCL-2 was evaluated in LPS-stimulated THP-1 cells (ATCC TIB-202). The inhibition of lipase, α-amylase, and α-glucosidase was tested in vitro, whereas the hypoglycemic effect was assayed in the oral starch tolerance test. The chemical composition was investigated by extensive UHPLC-DAD-ESI-MS/MS analyses. RESULTS The extract and derived fractions reduced TNF-α (EE pIC50 = 4.58 ± 0.01; FrEtOAc pIC50 = 4.69 ± 0.01; FrMeOH pIC50 = 4.54 ± 0.02) and IL-1β (EE pIC50 = 4.86 ± 0.02; FrEtOAc pIC50 = 4.86 ± 0.02; FrMeOH pIC50 = 4.75 ± 0.01) release by LPS-stimulated THP-1 cells in a concentration-dependent manner, whereas the inhibitory effect on CCL-2 release did not reach a clear linear relationship for the tested concentrations. The extract and fractions also inhibited in vitro the activity of lipase (EE pIC50 = 3.97 ± 0.12; FrEtOAc pIC50 = 3.87 ± 0.04; FrMeOH pIC50 = 3.67 ± 0.14), α-amylase (EE pIC50 = 4.46 ± 0.27; FrEtOAc pIC50 = 5.47 ± 0.27; FrMeOH pIC50 = 4.26 ± 0.22), and α-glucosidase (EE pIC50 = 5.46 ± 0.05; FrEtOAc pIC50 = 5.79 ± 0.11; FrMeOH pIC50 = 5.74 ± 0.05). The pIC50 values of the test samples were lower than those obtained with orlistat (7.59 ± 0.08) and acarbose (6.04 ± 0.37 and 7.63 ± 0.04) employed as the positive controls respectively in the lipase, α-amylase, and α-glucosidase assays. When assayed in the oral starch tolerance test, the extract and fractions also reduced animal glycaemia. UHPLC-DAD-ESI-MS/MS analyses of the extract and fractions led to the identification of 38 phenolic compounds, mainly phenolic acids, ellagitannins and flavonoids, among others, all of them first-time described for the species. CONCLUSION Based on our findings, T. phaeocarpa has hypoglycaemic activity and polyphenols are the probable bioactive compounds, which support the ethnomedical use of the species.
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Affiliation(s)
- José Hugo de Sousa Gomes
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - Ulrich Carlos Mbiakop
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - Renata Leite Oliveira
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - João Renato Stehmann
- Department of Botany, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - Rodrigo Maia de Pádua
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - Steyner F Cortes
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil
| | - Fernão Castro Braga
- Department of Pharmaceutical Products, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Brazil.
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Ajebli M, Khan H, Eddouks M. Natural Alkaloids and Diabetes Mellitus: A Review. Endocr Metab Immune Disord Drug Targets 2021; 21:111-130. [PMID: 32955004 DOI: 10.2174/1871530320666200821124817] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/11/2020] [Accepted: 06/22/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The use of herbal therapies for treatment and management of diabetes mellitus and complications associated with this chronic condition is increasing. Plants contain a bounty of phytochemicals that have been proven to be protective by reducing the risk of various ailments and diseases, including alkaloids. Moreover, alkaloids are known to be among the oldest natural products used by humans for highlighting drugs that play crucial roles as therapeutic agents. The reason for this expanding interest and uses of alkaloids as a part of plant natural compounds-based treatments is that a significant proportion of diabetic patients do not respond very well to conventional therapeutic medication. Furthermore, other explanations to this fact are the cost of medication, side-effects, accessibility, and availability of health facilities and drugs and the inefficiency of these medicines in certain cases. OBJECTIVE In this study we aimed to review the literature on the valuable effects of herbs and plants and their isolated alkaloids compounds as medication for management of diabetes, a prevalent risk factor for several other disorders and illnesses. METHODS In the current review, PubMed, ScienceDirect, Springer and google scholar databases were used and the criterion for inclusion was based on the following keywords and phrases: diabetes, hyperglycemia, complications of diabetes, alkaloids, antidiabetic alkaloids, hypoglycemic alkaloids, alkaloids and complications of diabetes mellitus, mechanisms of action and alkaloids. RESULTS In the current review, we demonstrate that alkaloids in the form of extracts and isolated molecules obtained from a large variety of species demonstrated their efficiency for improving raises in blood glucose either in animal models via experimental studies or in human subjects via clinical trials. Medicinal species as chillies (Capsicum annuum), turmeric (Curcuma longa), barberry (Berberis vulgaris) and cress (Lepidium sativum) are among the most common and therapeutic plants used for controlling diabetes that were the subject of several experimental and clinical investigations. Whereas, isolated alkaloids such as berberine, capsaicin and trigonelline have received more interest in this field. Interestingly, the therapeutic impact of alkaloids against blood glucose pathogenesis is mediated through a variety of signaling cascades and pathways, via inhibiting or stimulating diversity of systems such as inhibition of α-glucosidase enzyme, blockade of PTP- 1B, deactivation of DPP-IV, increasing insulin sensitivity and modulating the oxidative stress. CONCLUSION Based on the findings of the present review, alkaloids could be used as preventive and curative agents in the case of endocrine disorders, particularly diabetes and could play a promoting function for the discovery of new antidiabetic agents.
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Affiliation(s)
- Mohammed Ajebli
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000, Errachidia, Morocco
| | - Haroun Khan
- Abdul Wali Khan University, Mardan, Pakistan
| | - Mohamed Eddouks
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, 52000, Errachidia, Morocco
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23
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Sinan KI, Luz Cádiz-Gurrea MDL, Javier Leyva-Jiménez F, Fernández-Ochoa Á, Segura-Carretero A, Glamocilja J, Sokovic M, Nenadić M, Aktumsek A, Dall'Acqua S, Zengin G. New insights on Phyllanthus reticulatus Poir. leaves and stem bark extracts: UPLC-ESI-TOF-MS profiles, and biopharmaceutical and in silico analysis. NEW J CHEM 2021. [DOI: 10.1039/d1nj03621a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Our results could provide a great scientific starting point on the way from the bench to functional applications through the use of P. reticulatus, namely novel nutraceuticals, pharmaceuticals and cosmeceuticals.
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Affiliation(s)
- Kouadio Ibrahime Sinan
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey
| | - María de la Luz Cádiz-Gurrea
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Fuentenueva s/n, E-18071 Granada, Spain
- Functional Food Research and Development Center, Health Science Technological Park, Avenida del Conocimiento s/n, E-18100 Granada, Spain
| | - Francisco Javier Leyva-Jiménez
- Functional Food Research and Development Center, Health Science Technological Park, Avenida del Conocimiento s/n, E-18100 Granada, Spain
| | - Álvaro Fernández-Ochoa
- Max Delbrück Center for Molecular Medicine in the Helmholtz Association, 13125 Berlin, Germany
- Berlin Institute of Health Metabolomics Platform, 10178 Berlin, Germany
| | - Antonio Segura-Carretero
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Fuentenueva s/n, E-18071 Granada, Spain
- Functional Food Research and Development Center, Health Science Technological Park, Avenida del Conocimiento s/n, E-18100 Granada, Spain
| | - Jasmina Glamocilja
- Laboratory of Mycology, Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Marina Sokovic
- Laboratory of Mycology, Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Marija Nenadić
- Laboratory of Mycology, Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Abdurrahman Aktumsek
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey
| | - Stefano Dall'Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey
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Ajebli M, Amssayef A, Eddouks M. Antihyperglycemic Activity and Safety Assessment of the Aqueous Extract of Aerial Parts of Scorzonera undulata ssp deliciosa in Rat. Cardiovasc Hematol Disord Drug Targets 2020; 20:305-316. [PMID: 32860366 DOI: 10.2174/1871529x20666200827113029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 11/22/2022]
Abstract
AIMS The aim of this study was to evaluate the antidiabetic effect of Scorzonera undulata. BACKGROUND Scorzonera undulata ssp deliciosa, locally known as "Guiz", is used as a phytomedicine in Morocco and Algeria to treat different health problems. Interestingly, it is used in the Moroccan pharmacopeia to treat diabetes. To our knowledge, this medicinal herb has never been investigated for any pharmacological activity. OBJECTIVE This study aimed to evaluate the antihyperglycemic effect of the aqueous extract of the aerial part of Scorzonera undulata (SUAP) in normal and STZ-induced diabetic rats and to assess the acute toxicity of this extract in Wistar rats. METHODS This study investigated the effects of SUAP at a dose of 20 mg/kg on blood glucose levels in normal and streptozotocin(STZ)-induced diabetic rats. The acute toxicity of SUAP was examined according to the OECD test guideline; rats were divided into four groups of each sex and orally received the SUAP (1000, 2000, or 3000 mg/kg BW). Post-treatment, body weight, signs of toxicity, and/or mortality were observed during 14 days. Other assays such as histopathological examination, preliminary phytochemical investigation, determination of glycogen content and evaluation of α-amylase were performed according to standard protocols. RESULTS The findings of the current study depicted that both single and repeated oral administration of SUAP (20 mg/kg) generated a significant fall in the blood glucose levels in diabetic rats. A single oral administration of SUAP (at the highest dose of 3000 mg/kg BW) had no significant acute toxicological effects, and oral LD50 of SUAP was greater than 3000 mg/kg. Furthermore, repeated oral administration of SUAP during 15 days led to an increase in the liver glycogen content in diabetic rats to improve the histopathological structure of the liver and pancreas in SUAPtreated diabetic rats and to ameliorate some biochemical parameters such as ALT and creatinine. SUAP had no effect on α-amylase activity. In addition, the preliminary phytochemical investigation showed the richness of the roots of SUAP in some phytochemicals, particularly the polyphenols. CONCLUSION The present study demonstrates the antihyperglycemic effect of Scorzonera undulata in diabetic rats which could be involved through the improvement of liver structure and function. In addition, the dose used is not toxic. Finally, the extract contains large amounts of bioactive compounds, mainly polyphenols.
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Affiliation(s)
- Mohammed Ajebli
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000, Morocco
| | - Ayoub Amssayef
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000, Morocco
| | - Mohamed Eddouks
- Team of Ethnopharmacology and Pharmacognosy, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University of Meknes, BP 509, Boutalamine, Errachidia, 52000, Morocco
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Cardullo N, Muccilli V, Cunsolo V, Tringali C. Mass Spectrometry and 1H-NMR Study of Schinopsis lorentzii (Quebracho) Tannins as a Source of Hypoglycemic and Antioxidant Principles. Molecules 2020; 25:molecules25143257. [PMID: 32708865 PMCID: PMC7397293 DOI: 10.3390/molecules25143257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/10/2020] [Accepted: 07/16/2020] [Indexed: 11/23/2022] Open
Abstract
The ethyl acetate extract of the commercial tannin Tan’Activ QS-SOL (from Schinopsis lorentzii wood), employed for the production of red wine, was subjected to chromatography on Sephadex LH-20, providing nine fractions (A-1–A-9), which were estimated for total phenols content (GAE), antioxidant activity (DPPH, ORAC), and hypoglycemic activity (α-glucosidase and α-amylase inhibition). All the fractions were analyzed by means of HPLC/ESI-MS/MS and 1H-NMR to identify the principal active constituents. Fractions A-1 and A-3 showed the highest antioxidant activity and gallic acid (1), pyrogallol (3), eriodictyol (6), catechin (12), and taxifolin (30) were identified as the major constituents. The highest α-glucosidase and α-amylase inhibitory activity was observed in fractions A-7–A-9 containing condensed (9′, 15, 18, 19, 23, and 27) hydrolysable tannins (13 and 32) as well as esters of quinic acid with different units of gallic acid (5, 11, 11′, 14, and 22). This last class of gallic acid esters are here reported for the first time as α-glucosidase and α-amylase inhibitors.
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Rambaran TF. Nanopolyphenols: a review of their encapsulation and anti-diabetic effects. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-3110-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
AbstractPolyphenols are believed to possess numerous health benefits and can be grouped as phenolic acids, flavonoids or non-flavonoids. Research involving the synthesis of nanopolyphenols has attracted interest in the areas of functional food, nutraceutical and pharmaceutical development. This is in an effort to overcome current challenges which limit the application of polyphenols such as their rapid elimination, low water-solubility, instability at low pH, and their particle size. In the synthesis of nanopolyphenols, the type of nanocarrier used, the nanoencapsulation technique employed and the type of polymers that constitute the drug delivery system are crucial. For this review, all mentioned factors which can influence the therapeutic efficacy of nanopolyphenols were assessed. Their efficacy as anti-diabetic agents was also evaluated in 33 publications. Among these were phenolic acid (1), flavonoids (13), non-flavonoids (17) and polyphenol-rich extracts (2). The most researched polyphenols were quercetin and curcumin. Nanoparticles were the main nanocarrier and the size of the nanopolyphenols ranged from 15 to 333 nm with encapsulation efficiency and drug loading capacities of 56–97.7% and 4.2–53.2%, respectively. The quantity of nanomaterial administered orally ranged from 1 to 300 mg/kg/day with study durations of 1–70 days. Most studies compared the effect of the nanopolyphenol to its free-form and, in all but three cases, significantly greater effects of the former were reported. Assessment of the polyphenol to understand its properties and the subsequent synthesis of its nanoencapsulated form using suitable nanocarriers, polymers and encapsulation techniques can result in effective therapeutic agents for the treatment of diabetes.
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C-glucosidic ellagitannins and galloylated glucoses as potential functional food ingredients with anti-diabetic properties: a study of α-glucosidase and α-amylase inhibition. Food Chem 2019; 313:126099. [PMID: 31927321 DOI: 10.1016/j.foodchem.2019.126099] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/19/2019] [Accepted: 12/22/2019] [Indexed: 12/13/2022]
Abstract
Diabetes mellitus is a metabolic disorder characterized by hyperglycemia, which can be counteracted by inhibition of α-glucosidase and α-amylase, both involved in the carbohydrate metabolism. Fourteen C-glucosidic ellagitannins and three galloylated glucoses were studied as potential α-glucosidase and α-amylase inhibitors. Most of the compounds were found to be moderate inhibitors of α-amylase, but potent inhibitors of α-glucosidase, showing low-micromolar IC50 values, far lower than that of the antidiabetic drug acarbose. This selectivity can be an advantage for their possible application as functional food ingredients with anti-diabetic properties because strong α-amylase inhibition generally causes undesired side effects. The best inhibitors were selected for further studies. Intrinsic fluorescence measurements confirmed their high affinity towards α-glucosidase, highlighting a static quenching mechanism. Circular dichroism measurements and kinetics of inhibition indicated that the most active C-glucosidic ellagitannin roburin D (RobD) is a competitive inhibitor, whereas α-pentagalloylglucose (α-PGG) acts as a mixed-type inhibitor.
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Ajebli M, Eddouks M. Flavonoid-Enriched Extract from Desert Plant Warionia saharae Improves Glucose and Cholesterol Levels in Diabetic Rats. Cardiovasc Hematol Agents Med Chem 2019; 17:28-39. [PMID: 30666919 PMCID: PMC6875866 DOI: 10.2174/1871525717666190121143934] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/08/2019] [Accepted: 01/14/2019] [Indexed: 01/11/2023]
Abstract
Background and Objective: Warionia saharae Benth and Coss, is a medicinal plant used for its anti-diabetic properties in Morocco. This study was designed to examine the effect of the Flavonoid-Enriched Extract (FEE) obtained from Warionia saharae (W. saharae) on glucose and lipid metabolism in normal and streptozotocin (STZ)-induced diabetic rats. Methods: Acute (6 h) and sub-chronic (15 days) oral administration of FEE (10 mg/kg) was used to assess the glucose and lipid-lowering activity in normal and diabetic rats. Furthermore, glucose test tolerance, liver histopathological examination and in vitro antioxidant activity of FEE were carried out in this study. Results: Results indicated that FEE was able to exert antihyperglycemic activity. Additionally, FEE improved histopathological status of liver and pancreas in diabetic rats and possessed antioxidant activity. Conclusion: In conclusion, the present investigation revealed that FEE had potent antidiabetic effect in diabetic rats.
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Affiliation(s)
- Mohammed Ajebli
- Team of Physiology and Endocrine Pharmacology, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, BP 509, Boutalamine, Errachidia, 52000, Morocco
| | - Mohamed Eddouks
- Team of Physiology and Endocrine Pharmacology, Faculty of Sciences and Techniques Errachidia, Moulay Ismail University, BP 509, Boutalamine, Errachidia, 52000, Morocco
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