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Servida S, Piontini A, Gori F, Tomaino L, Moroncini G, De Gennaro Colonna V, La Vecchia C, Vigna L. Curcumin and Gut Microbiota: A Narrative Overview with Focus on Glycemic Control. Int J Mol Sci 2024; 25:7710. [PMID: 39062953 PMCID: PMC11277527 DOI: 10.3390/ijms25147710] [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: 05/16/2024] [Revised: 07/01/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Turmeric is a spice widely used in China, Southeast Asia, and in traditional Ayurvedic medicine. Its safety profile and efficacy as an antioxidant, anti-inflammatory, antimicrobial, antitumor, antidiabetic, and anti-obesity agent have led to extensive research into its potential role in preventing and treating metabolic diseases. The active compound in turmeric is curcumin, which exhibits low systemic bioavailability after oral administration. However, it is detectable in the gut, where it bidirectionally interacts with the gut microbiota (GM), which plays a crucial role in maintaining host health. The favorable effects of curcumin, particularly its hypoglycemic properties, are linked to alteration in intestinal dysbiosis observed in type 2 diabetes mellitus and metabolic syndrome patients. Restoration of the eubiotic GM may contribute to glycemic homeostasis. Preclinical and clinical studies have demonstrated the involvement of the GM in the regulation of glucose and lipid metabolism. Although the underlying mechanism remains incompletely understood, intestinal dysbiosis is associated with insulin resistance, hyperglycemia, and low-grade inflammation. In the present overview, we summarize the biological properties of curcumin, focusing on its link with GM and, therefore, on its potential role in metabolic diseases.
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Affiliation(s)
- Simona Servida
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (S.S.); (A.P.); (V.D.G.C.)
| | - Alessandra Piontini
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (S.S.); (A.P.); (V.D.G.C.)
| | - Francesca Gori
- Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Laura Tomaino
- Postgraduate School of Emergency Medicine, Università Politecnica delle Marche, 60121 Ancona, Italy;
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, 60121 Ancona, Italy;
| | - Gianluca Moroncini
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, 60121 Ancona, Italy;
| | - Vito De Gennaro Colonna
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (S.S.); (A.P.); (V.D.G.C.)
- Department of Clinical Science and Community Health, DISSCO, Università degli Studi, 20122 Milan, Italy;
| | - Carlo La Vecchia
- Department of Clinical Science and Community Health, DISSCO, Università degli Studi, 20122 Milan, Italy;
| | - Luisella Vigna
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy; (S.S.); (A.P.); (V.D.G.C.)
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Murai H, Kuboniwa M, Kakiuchi M, Matsumura R, Hirata Y, Amano A. Curcumin inhibits growth of Porphyromonas gingivalis by arrest of bacterial dipeptidyl peptidase activity. J Oral Microbiol 2024; 16:2373040. [PMID: 38974504 PMCID: PMC11225630 DOI: 10.1080/20002297.2024.2373040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 06/23/2024] [Indexed: 07/09/2024] Open
Abstract
Background Curcumin is a multi-functional polyphenol with anti-bacterial and anti-inflammatory effects and may have potential for treatment of periodontal diseases. The present study was conducted to examine the molecular basis of the anti-bacterial effect of curcumin against Porphyromonas gingivalis using metabolome analysis. Materials and Methods P. gingivalis were incubated with 10 µg/mL curcumin, and then metabolites were analyzed with CE-TOF/MS. Expression levels of sigma factors were also evaluated using RT-PCR assays. The activities of dipeptidyl peptidases (DPPs) were assessed by examining the degradation reactions of MCA-labeled peptides. Results The relative amounts of various glycogenic amino acids were significantly decreased when P. gingivalis was incubated with curcumin. Furthermore, the metabolites on the amino acid degradation pathway, including high-energy compounds such as ATP, various intermediate metabolites of RNA/DNA synthesis, nucleoside sugars and amino sugars were also decreased. Additionally, the expression levels of sigma-54 and sigma-70 were significantly decreased, and the same results as noted following nutrient starvation. Curcumin also significantly suppressed the activities of some DPPs, while the human DPP-4 inhibitors markedly inhibited the growth of P. gingivalis and activities of the DPPs. Conclusions Curcumin suppresses the growth of P. gingivalis by inhibiting DPPs and also interferes with nucleic acid synthesis and central metabolic pathways, beginning with amino acid metabolism.
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Affiliation(s)
- Hiroki Murai
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
- Saraya Research Institute, Saraya Co., Ltd, Osaka, Kashiwara, Japan
| | - Masae Kuboniwa
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
| | - Miho Kakiuchi
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
| | - Reiko Matsumura
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
- Saraya Research Institute, Saraya Co., Ltd, Osaka, Kashiwara, Japan
| | - Yoshihiko Hirata
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
- Saraya Research Institute, Saraya Co., Ltd, Osaka, Kashiwara, Japan
| | - Atsuo Amano
- Joint Research Laboratory for Advanced Oral Environmental Science (SARAYA), Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Osaka, Suita, Japan
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Bernardino-Nicanor A, Fernández-Avalos S, Juárez-Goiz JMS, Montañez-Soto JL, González-Cruz L. The In Vitro Inhibitory Activity of Pacaya Palm Rachis versus Dipeptidyl Peptidase-IV, Angiotensin-Converting Enzyme, α-Glucosidase and α-Amylase. PLANTS (BASEL, SWITZERLAND) 2024; 13:400. [PMID: 38337933 PMCID: PMC10856824 DOI: 10.3390/plants13030400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
The pacaya palm (Chamaedorea tepejilote Liebm) is an important food that is commonly consumed in Mexico and Central America due to its nutritive value. It is also used as a nutraceutical food against some chronic diseases, such as hypertension and hyperglycemia. However, few reports have indicated its possible potential. For this reason, the goal of this research was to evaluate the effects of the enzymatic activity of the pacaya palm inflorescence rachis on both hypertension and hyperglycemia and the effects of thermal treatments on the enzymatic activity. The enzymatic inhibition of ACE (angiotensin-converting enzyme), DPP-IV (dipeptidyl peptidase-IV), α-glucosidase and α-amylase were evaluated, all with powder extracts of pacaya palm inflorescences rachis. The results indicated that thermally treated rachis showed increased enzymatic inhibitory activity against α-amylase and DPP-IV. However, all rachis, both with and without thermal treatment, showed low- or no enzymatic activity against α-glucosidase and ACE. Apparently, the mechanism of action of the antidiabetic effect of rachis is mediated by the inhibition of α-amylase and DPP-IV and does not contribute with a significant effect on enzymes involved in the hypertension mechanism. Finally, the properties of the extract were modified via the extraction method and the temperature tested.
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Affiliation(s)
- Aurea Bernardino-Nicanor
- Tecnológico Nacional de México/ IT de Celaya, Antonio-García Cubas Pte #600 Esq. Av. Tecnológico, Celaya, Guanajuato C.P. 38010, Mexico; (A.B.-N.); (S.F.-A.); (J.M.S.J.-G.)
| | - Stephanie Fernández-Avalos
- Tecnológico Nacional de México/ IT de Celaya, Antonio-García Cubas Pte #600 Esq. Av. Tecnológico, Celaya, Guanajuato C.P. 38010, Mexico; (A.B.-N.); (S.F.-A.); (J.M.S.J.-G.)
| | - José Mayolo Simitrio Juárez-Goiz
- Tecnológico Nacional de México/ IT de Celaya, Antonio-García Cubas Pte #600 Esq. Av. Tecnológico, Celaya, Guanajuato C.P. 38010, Mexico; (A.B.-N.); (S.F.-A.); (J.M.S.J.-G.)
| | - José Luis Montañez-Soto
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional del, Instituto Politécnico Nacional, Jiquilpan, Michoacan C.P. 59510, Mexico;
| | - Leopoldo González-Cruz
- Tecnológico Nacional de México/ IT de Celaya, Antonio-García Cubas Pte #600 Esq. Av. Tecnológico, Celaya, Guanajuato C.P. 38010, Mexico; (A.B.-N.); (S.F.-A.); (J.M.S.J.-G.)
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Roney M, Dubey A, Issahaku AR, Uddin MN, Tufail A, Wilhelm A, Zamri NB, Aluwi MFFM. Insights from in silico exploration of major curcumin analogs targeting human dipeptidyl peptidase IV. J Biomol Struct Dyn 2024:1-14. [PMID: 38260948 DOI: 10.1080/07391102.2024.2306197] [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: 10/21/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024]
Abstract
The goal of this work is to use a variety of in-silico techniques to identify anti-diabetic agents against DPP-IV enzyme from five main curcumin analogues. To produce the successful molecules, five main curcumin analogues were docked into the active site of DPP-IV enzyme. In comparison to the control molecule (Saxagliptin, -6.9 kcal/mol), all the compounds have the highest binding affinity (-7.6 to -7.7 kcal/mol) for the DPP-IV enzyme. These compounds underwent further testing for studies on drug-likeness, pharmacokinetics, and acute toxicity to see the efficacy and safety of compounds. To assess the stability of the docking complex and the binding posture identified during the docking experiment, our study got THC as the lead compound, which was then exposed to 200 ns of molecular dynamic simulation and PCA analysis. Additionally, DFT calculations were conducted to determine the thermodynamic, molecular orbital, and electrostatic potential characteristics of lead compound. Overall, the lead chemical has shown strong drug-like properties, is non-toxic, and has a sizable affinity for the DPP-IV enzyme.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Miah Roney
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, Gambang, Kuantan, Pahang Darul Makmur, Malaysia
- Bio Aromatic Research Centre, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, Gambang, Kuantan, Pahang Darul Makmur, Malaysia
| | - Amit Dubey
- Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
- Department of Computational Chemistry and Drug Discovery Division, Quanta Calculus, Greater Noida, Uttar Pradesh, India
| | | | - Md Nazim Uddin
- Institute of Food Science and Technology, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Aisha Tufail
- Department of Computational Chemistry and Drug Discovery Division, Quanta Calculus, Greater Noida, Uttar Pradesh, India
| | - Anke Wilhelm
- Department of Chemistry, University of the Free State, Bloemfontein, South Africa
| | - Normaiza Binti Zamri
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, Gambang, Kuantan, Pahang Darul Makmur, Malaysia
| | - Mohd Fadhlizil Fasihi Mohd Aluwi
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, Gambang, Kuantan, Pahang Darul Makmur, Malaysia
- Bio Aromatic Research Centre, Universiti Malaysia Pahang Al-Sultan Abdullah, Lebuhraya Tun Razak, Gambang, Kuantan, Pahang Darul Makmur, Malaysia
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Balogun FO, Singh K, Rampadarath A, Akoonjee A, Naidoo K, Sabiu S. Cheminformatics identification of modulators of key carbohydrate-metabolizing enzymes from C. cujete for type-2 diabetes mellitus intervention. J Diabetes Metab Disord 2023; 22:1299-1317. [PMID: 37969920 PMCID: PMC10638353 DOI: 10.1007/s40200-023-01249-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 06/07/2023] [Indexed: 11/17/2023]
Abstract
Purpose The therapeutic use of oral hypoglycaemic agents in the management of type-2 diabetes mellitus (T2DM) is without adverse effects; thus, calls for alternative and novel candidates from natural products in medicinal plants. Method The study explored molecular docking and molecular dynamics (MD) simulation approaches to identify key antidiabetic metabolites from Crescentia cujete. Results Molecular docking results identified four and/or five best compounds against each target enzyme (alpha-glucosidase, dipeptidyl peptidase-IV, aldose reductase, and protein tyrosine phosphatase-1B (PTP-1B)) implicated in diabetes. The resulting complexes (except against PTP-1B) had higher docking scores above respective standards (acarbose, Diprotin A, ranirestat). The MD simulation results revealed compounds such as benzoic acid (-48.414 kcal/mol) and phytol (-45.112 kcal/mol) as well as chlorogenic acid (-42.978 kcal/mol) and naringenin (-31.292 kcal/mol) had higher binding affinities than the standards [acarbose (-28.248 kcal/mol), ranirestat (-21.042 kcal/mol)] against alpha-glucosidase and aldose reductase, respectively while Diprotin A (-45.112 kcal/mol) and ursolic acid (-18.740 kcal/mol) presented superior binding affinities than the compounds [luteolin (-41.957 kcal/mol and naringenin (-16.518 kcal/mol)] against DPP-IV and PTP-1B respectively. Conclusion While isoflavone (alpha-glucosidase), xylocaine (DPP-IV), luteolin (aldose reductase,) and chlorogenic acid (PTP-1B) were affirmed as the best inhibitors of respective enzyme targets, luteolin, and chlorogenic acid may be suggested and proposed as probable candidates against T2DM and related retinopathy complication based on their structural stability, compactness and affinity for three (DPP-IV, aldose reductase, and PTP-1B) of the four targets investigated. Further studies are warranted in vitro and in vivo on the antihyperglycaemic effects of these drug candidates. Supplementary Information The online version contains supplementary material available at 10.1007/s40200-023-01249-7.
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Affiliation(s)
- Fatai Oladunni Balogun
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
| | - Karishma Singh
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
- Department of Nature Conservation, Mangosuthu University of Technology, Mangosuthu, South Africa
| | - Athika Rampadarath
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
| | - Ayesha Akoonjee
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
| | - Kayleen Naidoo
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
| | - Saheed Sabiu
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000 South Africa
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Rohani, Febrina E, Wahyuni IS, Levita J. Pharmacological and Clinical Studies of Medicinal Plants That Inhibit Dipeptidyl Peptidase-IV. Drug Des Devel Ther 2023; 17:3473-3491. [PMID: 38024536 PMCID: PMC10680473 DOI: 10.2147/dddt.s426870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Dipeptidyl peptidase IV (DPP-IV) is an enzyme responsible for the degradation of the incretin hormone glucagon-like peptide-1 (GLP-1). DPP-IV plays a significant role in regulating blood glucose levels by modulating the activity of GLP-1. In the context of diabetes, DPP-IV inhibitors effectively block the activity of DPP-IV, hence mitigating the degradation of GLP-1. This, in turn, leads to an extension of GLP-1's duration of action, prolongs gastric emptying, enhances insulin sensitivity, and ultimately results in the reduction of blood glucose levels. Nonetheless, reported adverse events of DPP-IV inhibitors on T2DM patients make it essential to understand the activity and mechanism of these drugs, particularly viewed from the perspective of finding the effective and safe add-on medicinal plants, to be implemented in clinical practice. This review is intended to bring forth a thorough overview of plants that work by reducing DPP-IV activity, from computational technique, enzymatic study, animal experiments, and studies in humans. The articles were searched on PubMed using "Plants", "DPP-IV", "DPP-IV inhibitor", "GLP-1", "Type 2 diabetes", "diabetes", "in silico", "in vitro", "in vivo", "studies in human", "clinical study" as the query words, and filtered for ten years of publication period. Eighteen plants showed inhibition against DPP-IV as proven by in silico, in vitro, and in vivo studies; however, only ten plants were reported for efficacy in clinical studies. Several plant-based DPP-IV inhibitors, eg, Allium sativum, Morus Alba, Curcuma longa, Pterocarpus marsupium, and Taraxacum officinale, have established their functional role in inhibiting DPP-IV and have proven their effectiveness through studies in humans earning them a prominent place in therapeutic discovery.
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Affiliation(s)
- Rohani
- Master Program in Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang, Indonesia
| | - Ellin Febrina
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang, Indonesia
| | - Indah Suasani Wahyuni
- Department of Oral Medicine, Faculty of Dentistry, Padjadjaran University, Sumedang, Indonesia
| | - Jutti Levita
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Padjadjaran University, Sumedang, Indonesia
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Domínguez-Avila JA. Dietary Phenolic Compounds Exert Some of Their Health-Promoting Bioactivities by Targeting Liver X Receptor (LXR) and Retinoid X Receptor (RXR). Foods 2023; 12:4205. [PMID: 38231664 DOI: 10.3390/foods12234205] [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: 10/24/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
Consuming foods of vegetable origin has been shown to exert multiple health-related effects, many of them attributed to their phenolic compounds. These molecules are known for being bioactive across multiple cells and organs, with documented changes in gene expression being commonly reported. Nuclear receptors are signal transducers capable of regulating gene expression in response to endogenous and/or exogenous ligands. Liver X receptor (LXR) and retinoid X receptor (RXR) are two important nuclear receptors that can be acted on by phenolic compounds, thereby modifying gene expression and potentially exerting numerous subsequent bioactivities. The present work summarizes recent evidence of the effects of the phenolic compounds that are exerted by targeting LXR and/or RXR. The data show that, when LXR is being targeted, changes in lipid metabolism are commonly observed, due to its ability to regulate genes relevant to this process. The effects vary widely when RXR is the target since it is involved in processes like cell proliferation, vitamin D metabolism, and multiple others by forming heterodimers with other transcription factors that regulate said processes. The evidence therefore shows that phenolic compounds can exert multiple bioactivities, with a mechanism of action based, at least in part, on their ability to modulate the cell at the molecular level by acting on nuclear receptors. The data point to a promising and novel area of study that links diet and health, although various unknowns justify further experimentation to reveal the precise way in which a given phenolic can interact with a nuclear receptor.
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Affiliation(s)
- J Abraham Domínguez-Avila
- CONAHCYT-Centro de Investigación en Alimentación y Desarrollo A. C., Carretera Gustavo Enrique Astiazaran Rosas No. 46, La Victoria, Hermosillo 83304, SO, Mexico
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Servida S, Panzeri E, Tomaino L, Marfia G, Garzia E, Appiani GC, Moroncini G, Colonna VDG, Vecchia CL, Vigna L. Overview of Curcumin and Piperine Effects on Glucose Metabolism: The Case of an Insulinoma Patient’s Loss of Consciousness. Int J Mol Sci 2023; 24:ijms24076621. [PMID: 37047589 PMCID: PMC10095254 DOI: 10.3390/ijms24076621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/07/2023] [Accepted: 03/14/2023] [Indexed: 04/05/2023] Open
Abstract
The hypoglycemic properties of curcumin supplements in therapeutic doses are well-known and may represent a useful tool for the treatment of chronic diseases such as metabolic syndrome, insulin resistance and type 2 diabetes. The poor bioavailability of curcumin can be improved with the concomitant administration of piperine, with no severe adverse effects on glycemia reported so far in the literature. In this article, we further discuss a previously reported case of a helicopter pilot, affected by grade I obesity who, under curcumin and piperine treatment, experienced a transient loss of consciousness (TLOC), during a low-altitude flight. This episode led to a diagnosis of insulinoma, previously asymptomatic. We hypothesized that the combined effects of curcumin and piperine might have caused a severe hypoglycemic episode and subsequent TLOC. Therefore, further studies should be conducted to evaluate the safety of curcumin and piperine supplementation in subjects with impaired glucose metabolism and insulin secretion.
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Affiliation(s)
- Simona Servida
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Elena Panzeri
- Independent Researcher, Nutrigenetics Consultant, DA14 5JR London, UK
| | - Laura Tomaino
- Postgraduate School of Emergency Medicine, Università Politecnica delle Marche, 60126 Ancona, Italy
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, 60020 Ancona, Italy
| | - Giovanni Marfia
- Istituto di Medicina Aerospaziale “A. Mosso”, Aeronautica Militare Italiana, 20129 Milan, Italy
| | - Emanuele Garzia
- Istituto di Medicina Aerospaziale “A. Mosso”, Aeronautica Militare Italiana, 20129 Milan, Italy
| | | | - Gianluca Moroncini
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, 60020 Ancona, Italy
| | - Vito De Gennaro Colonna
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
- Department of Clinical Science and Community Health, DISSCO, Università degli Studi di Milano, 20122 Milan, Italy
| | - Carlo La Vecchia
- Department of Clinical Science and Community Health, DISSCO, Università degli Studi di Milano, 20122 Milan, Italy
| | - Luisella Vigna
- Obesity and Work Centre, Occupational Medicine Unit, Clinica del Lavoro L. Devoto, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
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Ansari P, Hannan JMA, Choudhury ST, Islam SS, Talukder A, Seidel V, Abdel-Wahab YHA. Antidiabetic Actions of Ethanol Extract of Camellia sinensis Leaf Ameliorates Insulin Secretion, Inhibits the DPP-IV Enzyme, Improves Glucose Tolerance, and Increases Active GLP-1 (7-36) Levels in High-Fat-Diet-Fed Rats. MEDICINES (BASEL, SWITZERLAND) 2022; 9:medicines9110056. [PMID: 36422117 PMCID: PMC9698069 DOI: 10.3390/medicines9110056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 05/14/2023]
Abstract
Camellia sinensis (green tea) is used in traditional medicine to treat a wide range of ailments. In the present study, the insulin-releasing and glucose-lowering effects of the ethanol extract of Camellia sinensis (EECS), along with molecular mechanism/s of action, were investigated in vitro and in vivo. The insulin secretion was measured using clonal pancreatic BRIN BD11 β cells, and mouse islets. In vitro models examined the additional glucose-lowering properties of EECS, and 3T3L1 adipocytes were used to assess glucose uptake and insulin action. Non-toxic doses of EECS increased insulin secretion in a concentration-dependent manner, and this regulatory effect was similar to that of glucagon-like peptide 1 (GLP-1). The insulin release was further enhanced when combined with isobutylmethylxanthine (IBMX), tolbutamide or 30 mM KCl, but was decreased in the presence of verapamil, diazoxide and Ca2+ chelation. EECS also depolarized the β-cell membrane and elevated intracellular Ca2+, suggesting the involvement of a KATP-dependent pathway. Furthermore, EECS increased glucose uptake and insulin action in 3T3-L1 cells and inhibited dipeptidyl peptidase IV (DPP-IV) enzyme activity, starch digestion and protein glycation in vitro. Oral administration of EECS improved glucose tolerance and plasma insulin as well as inhibited plasma DPP-IV and increased active GLP-1 (7-36) levels in high-fat-diet-fed rats. Flavonoids and other phytochemicals present in EECS could be responsible for these effects. Further research on the mechanism of action of EECS compounds could lead to the development of cost-effective treatments for type 2 diabetes.
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Affiliation(s)
- Prawej Ansari
- Department of Pharmacy, School of Pharmacy and Public Health, Independent University, Bangladesh (IUB), Dhaka 1229, Bangladesh
- School of Biomedical Sciences, Ulster University, Coleraine BT52 1SA, UK
- Correspondence:
| | - J. M. A. Hannan
- Department of Pharmacy, School of Pharmacy and Public Health, Independent University, Bangladesh (IUB), Dhaka 1229, Bangladesh
| | - Samara T. Choudhury
- Department of Pharmacy, School of Pharmacy and Public Health, Independent University, Bangladesh (IUB), Dhaka 1229, Bangladesh
| | - Sara S. Islam
- Department of Pharmacy, School of Pharmacy and Public Health, Independent University, Bangladesh (IUB), Dhaka 1229, Bangladesh
| | - Abdullah Talukder
- Department of Pharmacy, School of Pharmacy and Public Health, Independent University, Bangladesh (IUB), Dhaka 1229, Bangladesh
| | - Veronique Seidel
- Natural Products Research Laboratory, Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
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Fu YS, Ho WY, Kang N, Tsai MJ, Wu J, Huang L, Weng CF. Pharmaceutical Prospects of Curcuminoids for the Remedy of COVID-19: Truth or Myth. Front Pharmacol 2022; 13:863082. [PMID: 35496320 PMCID: PMC9047796 DOI: 10.3389/fphar.2022.863082] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/01/2022] [Indexed: 01/09/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is a positive-strand RNA virus, and has rapidly spread worldwide as a pandemic. The vaccines, repurposed drugs, and specific treatments have led to a surge of novel therapies and guidelines nowadays; however, the epidemic of COVID-19 is not yet fully combated and is still in a vital crisis. In repositioning drugs, natural products are gaining attention because of the large therapeutic window and potent antiviral, immunomodulatory, anti-inflammatory, and antioxidant properties. Of note, the predominant curcumoid extracted from turmeric (Curcuma longa L.) including phenolic curcumin influences multiple signaling pathways and has demonstrated to possess anti-inflammatory, antioxidant, antimicrobial, hypoglycemic, wound healing, chemopreventive, chemosensitizing, and radiosensitizing spectrums. In this review, all pieces of current information related to curcumin-used for the treatment and prevention of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection through in vitro, in vivo, and in silico studies, clinical trials, and new formulation designs are retrieved to re-evaluate the applications based on the pharmaceutical efficacy of clinical therapy and to provide deep insights into knowledge and strategy about the curcumin's role as an immune booster, inflammatory modulator, and therapeutic agent against COVID-19. Moreover, this study will also afford a favorable application or approach with evidence based on the drug discovery and development, pharmacology, functional foods, and nutraceuticals for effectively fighting the COVID-19 pandemic.
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Affiliation(s)
- Yaw-Syan Fu
- Department of Basic Medical Science, Anatomy and Functional Physiology Section, Xiamen Medical College, Xiamen, China,Department of Basic Medical Science, Institute of Respiratory Disease, Xiamen Medical College, Xiamen, China
| | - Wan-Yi Ho
- Department of Anatomy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ning Kang
- Department of Otorhinolaryngology, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - May-Jywan Tsai
- Department of Neurosurgery, Neurological Institute, Neurological Institute, Taipei, Taiwan
| | - Jingyi Wu
- Department of Basic Medical Science, Anatomy and Functional Physiology Section, Xiamen Medical College, Xiamen, China
| | - Liyue Huang
- Department of Basic Medical Science, Anatomy and Functional Physiology Section, Xiamen Medical College, Xiamen, China
| | - Ching-Feng Weng
- Department of Basic Medical Science, Anatomy and Functional Physiology Section, Xiamen Medical College, Xiamen, China,Department of Basic Medical Science, Institute of Respiratory Disease, Xiamen Medical College, Xiamen, China,*Correspondence: Ching-Feng Weng, ,
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11
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Lim WXJ, Gammon CS, von Hurst P, Chepulis L, Page RA. The Inhibitory Effects of New Zealand Pine Bark (Enzogenol®) on α-Amylase, α-Glucosidase, and Dipeptidyl Peptidase-4 (DPP-4) Enzymes. Nutrients 2022; 14:nu14081596. [PMID: 35458159 PMCID: PMC9029645 DOI: 10.3390/nu14081596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/29/2022] [Accepted: 04/08/2022] [Indexed: 12/29/2022] Open
Abstract
The New Zealand pine bark extract (Enzogenol®) has previously been shown to elicit acute hypoglycaemic effects in humans. The present study investigated the underlying mechanisms of Enzogenol® in reducing postprandial glucose in humans. The potential inhibitory action of Enzogenol® against digestive enzymes: α-amylase and α-glucosidase, and dipeptidyl peptidase-4 (DPP-4) enzyme was determined. Enzogenol® demonstrated the ability to inhibit all three enzymes: α-amylase enzyme activity (IC50 3.98 ± 0.11 mg/mL), α-glucosidase enzyme activity (IC50 13.02 ± 0.28 μg/mL), and DPP-4 enzyme activity (IC50 2.51 ± 0.04 mg/mL). The present findings indicate the potential for Enzogenol® to improve postprandial glycaemia by delaying carbohydrate digestion via the inhibition of digestive enzymes (α-amylase and α-glucosidase), and enhancing the incretin effect via inhibiting the dipeptidyl-peptidase-4 enzyme. The inhibitory actions of Enzogenol® on enzymes should therefore be further validated in humans for its potential use in type 2 diabetes mellitus prevention and management.
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Affiliation(s)
- Wen Xin Janice Lim
- School of Health Sciences, Massey University, Auckland 0632, New Zealand; (W.X.J.L.); (C.S.G.)
- Riddet Institute, Massey University, Palmerston North 4442, New Zealand
| | - Cheryl S. Gammon
- School of Health Sciences, Massey University, Auckland 0632, New Zealand; (W.X.J.L.); (C.S.G.)
| | - Pamela von Hurst
- School of Sport, Exercise and Nutrition, Massey University, Auckland 0632, New Zealand;
| | - Lynne Chepulis
- Waikato Medical Research Centre, Te Huataki Waiora School of Health, University of Waikato, Hamilton 3216, New Zealand;
| | - Rachel A. Page
- School of Health Sciences, Massey University, Wellington 6021, New Zealand
- Centre for Metabolic Health Research, Massey University, Auckland 0632, New Zealand
- Correspondence: ; Tel.: +64-4801-5799 (ext. 63462)
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12
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Praparatana R, Maliyam P, Barrows LR, Puttarak P. Flavonoids and Phenols, the Potential Anti-Diabetic Compounds from Bauhinia strychnifolia Craib. Stem. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082393. [PMID: 35458587 PMCID: PMC9032570 DOI: 10.3390/molecules27082393] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/20/2022] [Accepted: 03/25/2022] [Indexed: 12/21/2022]
Abstract
Bioactive compounds from medicinal plants are good alternative treatments for T2DM. They are also sources of lead molecules that could lead to new drug discoveries. In this study, Bauhinia strychnifolia Craib. stem, a traditional Thai medicinal plant for detoxification, was extracted into five fractions, including crude extract, BsH, BsD, BsE, and BsW, by ethanolic maceration and sequential partition with hexane, dichloromethane, ethyl acetate, and water, respectively. Among these fractions, BsE contained the highest amounts of phenolics (620.67 mg GAE/g extract) and flavonoids (131.35 mg QE/g extract). BsE exhibited the maximum inhibitory activity against α-glucosidase (IC50 1.51 ± 0.01 µg/mL) and DPP-IV (IC50 2.62 ± 0.03 µg/mL), as well as dominantly promoting glucose uptake on 3T3-L1 adipocytes. Furthermore, the four compounds isolated from the BsE fraction, namely resveratrol, epicatechin, quercetin, and gallic acid, were identified. Quercetin demonstrated the highest inhibitory capacity against α-glucosidase (IC50 6.26 ± 0.36 µM) and DPP-IV (IC50 8.25 µM). In addition, quercetin prominently enhanced the glucose uptake stimulation effect on 3T3-L1 adipocytes. Altogether, we concluded that quercetin was probably the principal bioactive compound of the B. strychnifolia stem for anti-diabetic, and the flavonoid-rich fraction may be sufficiently potent to be an alternative treatment for blood sugar control.
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Affiliation(s)
- Rachanida Praparatana
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand; (R.P.); (P.M.)
| | - Pattaravan Maliyam
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand; (R.P.); (P.M.)
| | - Louis R. Barrows
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 81112, USA;
| | - Panupong Puttarak
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand; (R.P.); (P.M.)
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
- Correspondence: ; Tel.: +66-994-741598
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13
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Huang TT, Gu PP, Zheng T, Gou LS, Liu YW. Piperine, as a TAS2R14 agonist, stimulates the secretion of glucagon-like peptide-1 in the human enteroendocrine cell line Caco-2. Food Funct 2022; 13:242-254. [PMID: 34881772 DOI: 10.1039/d1fo02932k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Piperine is reported to ameliorate common metabolic diseases, however, its molecular mechanism is still unclear. In the present study, we examined whether piperine could stimulate glucagon-like peptide-1 (GLP-1) secretion in a human enteroendocrine cell line, Caco-2, and explored the potential mechanisms from the activation of human bitter taste receptors (TAS2Rs). It was found that TAS2R14 was highly expressed in Caco-2 cells, far more than TAS2R4 and TAS2R10. Piperine and flufenamic acid (FA, a known TAS2R14 agonist) markedly increased intracellular calcium mobilization and significantly enhanced the GLP-1 secretion, accompanied by elevated levels of proglucagon mRNA in Caco-2 cells compared with the control. Moreover, piperine and FA activated TAS2R14 signaling as evidenced by the increased mRNA and protein levels of TAS2R14, and the protein expression of its downstream key molecules including phospholipase C β2 (PLCβ2) and a transient receptor potential channel melastatin 5 (TRPM5). On the other hand, a G protein βγ subunit inhibitor Gallein or a PLC inhibitor U73122 alleviated piperine-stimulated GLP-1 secretion in Caco-2 cells. In the meantime, a flavanone hesperetin significantly attenuated piperine and FA induced the intracellular calcium mobilization and GLP-1 secretion. Furthermore, TAS2R14 knockdown reversed the piperine-triggered up-regulation of PLCβ2 and TRPM5 as well as increased the GLP-1 secretion in Caco-2 cells by TAS2R14 shRNA transfection. In summary, our findings demonstrated that piperine promoted the GLP-1 secretion from enteroendocrine cells through the activation of TAS2R14 signaling. Moreover, TAS2R14 was likely a target of piperine in the alleviation of metabolic diseases.
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Affiliation(s)
- Ting-Ting Huang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China.
| | - Pan-Pan Gu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China.
| | - Ting Zheng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China.
| | - Ling-Shan Gou
- Center for Genetic Medicine, Xuzhou Maternity and Child Health Care Hospital, Xuzhou 221009, Jiangsu, China
| | - Yao-Wu Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China. .,Department of Pharmacology, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, Jiangsu, China
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14
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Jia Y, Cai S, Muhoza B, Qi B, Li Y. Advance in dietary polyphenols as dipeptidyl peptidase-IV inhibitors to alleviate type 2 diabetes mellitus: aspects from structure-activity relationship and characterization methods. Crit Rev Food Sci Nutr 2021:1-16. [PMID: 34652225 DOI: 10.1080/10408398.2021.1989659] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dietary polyphenols with great antidiabetic effects are the most abundant components in edible products. Dietary polyphenols have attracted attention as dipeptidyl peptidase-IV (DPP-IV) inhibitors and indirectly improve insulin secretion. The DPP-IV inhibitory activities of dietary polyphenols depend on their structural diversity. Screening methods that can be used to rapidly and accurately identify potential polyphenol DPP-IV inhibitors are urgently needed. This review focuses on the relationship between the structures of dietary polyphenols and their DPP-IV inhibitory effects. Different characterization methods used for polyphenols as DPP-IV inhibitors have been summarized and compared. We conclude that the position and number of hydroxyl groups, methoxy groups, glycosylated groups, and the extent of conjugation influence the efficiency of inhibition of DPP-IV. Various combinations of methods, such as in-vitro enzymatic inhibition, ex-vivo/in-vivo enzymatic inhibition, cell-based in situ, and in-silico virtual screening, are used to evaluate the DPP-IV inhibitory effects of dietary polyphenols. Further investigations of polyphenol DPP-IV inhibitors will improve the bioaccessibility and bioavailability of these bioactive compounds. Exploration of (i) dietary polyphenols derived from multiple targets, that can prevent diabetes, and (ii) actual binding interactions via multispectral analysis, to understand the binding interactions in the complexes, is required.
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Affiliation(s)
- Yijia Jia
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Shengbao Cai
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province, China
| | - Bertrand Muhoza
- College of Food Science, Northeast Agricultural University, Harbin, China
| | - Baokun Qi
- College of Food Science, Northeast Agricultural University, Harbin, China.,Heilongjiang Green Food Science Research Institute, Harbin, China.,National Research Center of Soybean Engineering and Technology, Harbin, China
| | - Yang Li
- College of Food Science, Northeast Agricultural University, Harbin, China.,Heilongjiang Green Food Science Research Institute, Harbin, China.,National Research Center of Soybean Engineering and Technology, Harbin, China
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15
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Lammi C, Bartolomei M, Bollati C, Cecchi L, Bellumori M, Sabato E, Giulio V, Mulinacci N, Arnoldi A. Phenolic Extracts from Extra Virgin Olive Oils Inhibit Dipeptidyl Peptidase IV Activity: In Vitro, Cellular, and In Silico Molecular Modeling Investigations. Antioxidants (Basel) 2021; 10:antiox10071133. [PMID: 34356366 PMCID: PMC8301156 DOI: 10.3390/antiox10071133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 11/16/2022] Open
Abstract
Two extra virgin olive oil (EVOO) phenolic extracts (BUO and OMN) modulate DPP-IV activity. The in vitro DPP-IV activity assay was performed at the concentrations of 1, 10, 100, 500, and 1000 μg/mL, showing a dose-dependent inhibition by 6.8 ± 1.9, 17.4 ± 6.1, 37.9 ± 2.4, 57.8 ± 2.9, and 81 ± 1.4% for BUO and by 5.4 ± 1.7, 8.9 ± 0.4, 28.4 ± 7.2, 52 ± 1.3, and 77.5 ± 3.5% for OMN. Moreover, both BUO and OMN reduced the DPP-IV activity expressed by Caco-2 cells by 2.9 ± 0.7, 44.4 ± 0.7, 61.2 ± 1.8, and 85 ± 4.2% and by 3 ± 1.9, 35 ± 9.4, 60 ± 7.2, and 82 ± 2.8%, respectively, at the same doses. The concentration of the most abundant and representative secoiridoids within both extracts was analyzed by nuclear magnetic resonance (1H-NMR). Oleuropein, oleacein, oleocanthal, hydroxytyrosol, and tyrosol, tested alone, reduced the DPP-IV activity, with IC50 of 472.3 ± 21.7, 187 ± 11.4, 354.5 ± 12.7, 741.6 ± 35.7, and 1112 ± 55.6 µM, respectively. Finally, in silico molecular docking simulations permitted the study of the binding mode of these compounds.
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Affiliation(s)
- Carmen Lammi
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
- Correspondence: ; Tel.: +39-025-031-9372
| | - Martina Bartolomei
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
| | - Carlotta Bollati
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
| | - Lorenzo Cecchi
- Department of Neuroscience, Psychology, Drug and Child Health, Pharmaceutical and Nutraceutical Section, University of Florence, 50019 Florence, Italy; (L.C.); (M.B.); (N.M.)
| | - Maria Bellumori
- Department of Neuroscience, Psychology, Drug and Child Health, Pharmaceutical and Nutraceutical Section, University of Florence, 50019 Florence, Italy; (L.C.); (M.B.); (N.M.)
| | - Emanuela Sabato
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
| | - Vistoli Giulio
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
| | - Nadia Mulinacci
- Department of Neuroscience, Psychology, Drug and Child Health, Pharmaceutical and Nutraceutical Section, University of Florence, 50019 Florence, Italy; (L.C.); (M.B.); (N.M.)
| | - Anna Arnoldi
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy; (M.B.); (C.B.); (E.S.); (V.G.); (A.A.)
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16
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Weng L, Chen TH, Zheng Q, Weng WH, Huang L, Lai D, Fu YS, Weng CF. Syringaldehyde promoting intestinal motility with suppressing α-amylase hinders starch digestion in diabetic mice. Biomed Pharmacother 2021; 141:111865. [PMID: 34246193 DOI: 10.1016/j.biopha.2021.111865] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/24/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
The antihyperglycemic potential of syringaldehyde has been previously investigated; however, the underlying mechanism remains unclear. In this study, we performed a postprandial glucose test (in vivo) including oral glucose tolerance test (OGTT) and oral starch tolerance test (OSTT) in fructose-induced diabetic mice on a high-fat diet for mimicking type 2 diabetes to explore the hypoglycemic efficacy of syringaldehyde and the underlined molecular involvement of syringaldehyde in a glucose-lowering effect. The results revealed that syringaldehyde dose-dependently suppressed blood glucose in both the OSTT and OGTT when referenced to acarbose and metformin, respectively. Surprisingly, syringaldehyde triggered jejunum motility (ex vivo) via activation of the muscarinic-type acetylcholine receptor. By performing virtual screening with molecular docking, the data showed that syringaldehyde nicely interacted with glucagon-like peptide 1 receptor (GLP-1R), peroxisome proliferator-activated receptor (PPAR), dipeptidyl peptidase-IV (DPP-4), acetylcholine M2 receptor, and acetylcholinesterase. These results showed that syringaldehyde can potentiate intestinal contractility to abolish the α-amylase reaction when concurrently reducing retention time and glucose absorption to achieve a glucose-lowering effect in diabetic mice, suggesting its potential therapeutic benefits with improvement for use as a prophylactic and treatment.
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Affiliation(s)
- Lebin Weng
- Department of Physiology, School of Basic Medical Science, Xiamen Medical College, Xiamen 361023, Fujian, China.
| | - Ting-Hsu Chen
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 97401, Taiwan.
| | - Qingyan Zheng
- Department of Physiology, School of Basic Medical Science, Xiamen Medical College, Xiamen 361023, Fujian, China.
| | - Wei-Hao Weng
- Department of Pharmacy, China Medical University, Taichung 40402, Taiwan.
| | - Liyue Huang
- Department of Physiology, School of Basic Medical Science, Xiamen Medical College, Xiamen 361023, Fujian, China.
| | - Dong Lai
- Medical Research Center, the Second Affiliated Hospital of Xiamen Medical College, Xiamen 361021, Fujian, China.
| | - Yaw-Syan Fu
- Medical Research Center, the Second Affiliated Hospital of Xiamen Medical College, Xiamen 361021, Fujian, China; Department of Anatomy, School of Basic Medical Science, Xiamen Medical College, Xiamen 361023, Fujian, China.
| | - Ching-Feng Weng
- Department of Physiology, School of Basic Medical Science, Xiamen Medical College, Xiamen 361023, Fujian, China; Medical Research Center, the Second Affiliated Hospital of Xiamen Medical College, Xiamen 361021, Fujian, China.
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17
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Shaikh S, Lee EJ, Ahmad K, Ahmad SS, Lim JH, Choi I. A Comprehensive Review and Perspective on Natural Sources as Dipeptidyl Peptidase-4 Inhibitors for Management of Diabetes. Pharmaceuticals (Basel) 2021; 14:591. [PMID: 34203048 PMCID: PMC8235117 DOI: 10.3390/ph14060591] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 12/19/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is an increasing global public health problem, and its prevalence is expected to rise in coming decades. Dipeptidyl peptidase-4 (DPP-4) is a therapeutic target for the management of T2DM, and its inhibitors prevent the degradation of glucose-dependent insulinotropic peptide and glucagon-like peptide 1, and thus, maintain their endogenous levels and lower blood glucose levels. Various medicinal plant extracts and isolated bioactive compounds exhibit DPP-4 inhibitory activity. In this review, we discussed different natural sources that have been shown to have anti-diabetic efficacy with a particular emphasis on DPP-4 inhibition. Furthermore, the effect of DPP-4 inhibition on pancreatic beta cell function, skeletal muscle function, and the glucose-lowering mechanisms were also discussed. We believe that scientists looking for novel compounds with therapeutic promise against T2DM will be able to develop antidiabetic drugs using these natural sources.
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Affiliation(s)
- Sibhghatulla Shaikh
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
| | - Eun-Ju Lee
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
| | - Khurshid Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
| | - Syed-Sayeed Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
| | - Jeong-Ho Lim
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
| | - Inho Choi
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea; (S.S.); (E.-J.L.); (K.A.); (S.-S.A.); (J.-H.L.)
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
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18
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Cao W, Chen X, Chin Y, Zheng J, Lim PE, Xue C, Tang Q. Identification of curcumin as a potential α-glucosidase and dipeptidyl-peptidase 4 inhibitor: Molecular docking study, in vitro and in vivo biological evaluation. J Food Biochem 2021; 46:e13686. [PMID: 33817806 DOI: 10.1111/jfbc.13686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/09/2021] [Accepted: 02/15/2021] [Indexed: 12/13/2022]
Abstract
Natural compounds have tremendous potential to regulate glucose metabolism, but conventional methods for studying their bioactivities are usually labor intensive. Here, hypoglycemic properties in 22 selected food-derived compounds were examined using molecular docking. The results indicated that curcumin is an inhibitor of both α-glucosidase and dipeptidyl-peptidase 4 (DPP-4), which are important for glycemic control. These effects of curcumin were also confirmed by enzymatic determination in vitro. Furthermore, curcumin significantly improved diet-induced hyperglycemia (e.g., fasting plasma glucose levels and glycogen storage in muscle or liver) in mice. This might be attributed to its inhibitory effects on the activities of α-glucosidase and DPP-4 in vivo. Curcumin also upregulated the expression of genes (e.g., glucagon-like peptide 1) related to DPP-4 activity in the small intestine. In conclusion, curcumin is a potential ingredient of functional foods used for diet-induced hyperglycemia management. PRACTICAL APPLICATIONS: Curcumin has been widely used as a colorant in the food industry. Moreover, a growing number of studies have described its diverse biological functions, such as anti-inflammatory, anti-oxidant, and anti-angiogenic activities. Thus, curcumin is regarded as a potential ingredient in functional foods. Our results highlighted the hyperglycemic effect of curcumin, suggesting that curcumin may be included in food products for hyperglycemic patients.
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Affiliation(s)
- Wanxiu Cao
- Human Health Research Laboratory, College of Food Science and Engineering, Ocean University of China, Qingdao, China.,Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Xin Chen
- Human Health Research Laboratory, College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | | | - Jinkai Zheng
- Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Phaik Eem Lim
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.,Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Changhu Xue
- Human Health Research Laboratory, College of Food Science and Engineering, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Qingjuan Tang
- Human Health Research Laboratory, College of Food Science and Engineering, Ocean University of China, Qingdao, China
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19
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Zhang B, Xu Y, Lv H, Pang W, Wang J, Ma H, Wang S. Intestinal pharmacokinetics of resveratrol and regulatory effects of resveratrol metabolites on gut barrier and gut microbiota. Food Chem 2021; 357:129532. [PMID: 33878586 DOI: 10.1016/j.foodchem.2021.129532] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/08/2021] [Accepted: 03/03/2021] [Indexed: 02/08/2023]
Abstract
Resveratrol, a dietary polyphenol, has a variety of intestinal bioactivities. However, its material basis remains unknown. This study examined the intestinal pharmacokinetics of resveratrol using HPLC-MS/MS. After oral ingestion in mice, resveratrol and its sulfation metabolites were identified in copious amount in the entire intestinal tract and feces. The glucuronidation metabolites were found in major quantity only in the small intestine. The amount of resveratrol and its metabolites in the total intestine peaked at 4 h, with a concentration of 200 ± 74.8 μM, which corresponded to 14.0% of the administrated dose. During in vitro fermentation, resveratrol-3-O-sulfate, but not resveratrol, significantly promoted the growth of Lactobacillus reuteri (10-fold higher). During the incubation with Caco-2 cells, resveratrol-3-O-sulfate significantly up-regulated the mRNA expressions of tight junction and mucin-related proteins. In conclusion, the intestinal concentration of resveratrol could partially support its intestinal bioactivities, which may be mediated through the actions of its metabolites.
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Affiliation(s)
- Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yingchuan Xu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Wenwen Pang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Jin Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Hui Ma
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
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20
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Wang Y, Alkhalidy H, Liu D. The Emerging Role of Polyphenols in the Management of Type 2 Diabetes. Molecules 2021; 26:molecules26030703. [PMID: 33572808 PMCID: PMC7866283 DOI: 10.3390/molecules26030703] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 12/12/2022] Open
Abstract
Type 2 diabetes (T2D) is a fast-increasing health problem globally, and it results from insulin resistance and pancreatic β-cell dysfunction. The gastrointestinal (GI) tract is recognized as one of the major regulatory organs of glucose homeostasis that involves multiple gut hormones and microbiota. Notably, the incretin hormone glucagon-like peptide-1 (GLP-1) secreted from enteroendocrine L-cells plays a pivotal role in maintaining glucose homeostasis via eliciting pleiotropic effects, which are largely mediated via its receptor. Thus, targeting the GLP-1 signaling system is a highly attractive therapeutic strategy to treatment T2D. Polyphenols, the secondary metabolites from plants, have drawn considerable attention because of their numerous health benefits, including potential anti-diabetic effects. Although the major targets and locations for the polyphenolic compounds to exert the anti-diabetic action are still unclear, the first organ that is exposed to these compounds is the GI tract in which polyphenols could modulate enzymes and hormones. Indeed, emerging evidence has shown that polyphenols can stimulate GLP-1 secretion, indicating that these natural compounds might exert metabolic action at least partially mediated by GLP-1. This review provides an overview of nutritional regulation of GLP-1 secretion and summarizes recent studies on the roles of polyphenols in GLP-1 secretion and degradation as it relates to metabolic homeostasis. In addition, the effects of polyphenols on microbiota and microbial metabolites that could indirectly modulate GLP-1 secretion are also discussed.
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Affiliation(s)
- Yao Wang
- Department of Human Nutrition, Foods and Exercise, College of Agricultural and Life Sciences, Virginia Tech, Blacksburg, VA 24060, USA;
| | - Hana Alkhalidy
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid 22110, Jordan;
| | - Dongmin Liu
- Department of Human Nutrition, Foods and Exercise, College of Agricultural and Life Sciences, Virginia Tech, Blacksburg, VA 24060, USA;
- Correspondence: ; Tel.: +1-540-231-3402; Fax: +1-540-231-3916
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21
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Effects of 22 traditional anti-diabetic medicinal plants on DPP-IV enzyme activity and glucose homeostasis in high-fat fed obese diabetic rats. Biosci Rep 2021; 41:227539. [PMID: 33416077 PMCID: PMC7823188 DOI: 10.1042/bsr20203824] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 12/14/2022] Open
Abstract
The present study investigated the effects of hot water extracts of 22 medicinal plants used traditionally to treat diabetes on Dipeptidyl peptidase-IV (DPP-IV) activity both in vitro and in vivo in high-fat fed (HFF) obese-diabetic rats. Fluorometric assay was employed to determine the DPP-IV activity. For in vivo studies, HFF obese-diabetic rats were fasted for 6 h and blood was sampled at different times before and after the oral administration of the glucose alone (18 mmol/kg body weight) or with either of the four most active plant extracts (250 mg/5 ml/kg, body weight) or established DPP-IV inhibitors (10 μmol/5 ml/kg). DPP-IV inhibitors: sitagliptin, vildagliptin and diprotin A, decreased enzyme activity by a maximum of 95-99% (P<0.001). Among the 22 natural anti-diabetic plants tested, AnogeissusLatifolia exhibited the most significant (P<0.001) inhibitory activity (96 ± 1%) with IC50 and IC25 values of 754 and 590 μg/ml. Maximum inhibitory effects of other extracts: Aegle marmelos, Mangifera indica, Chloropsis cochinchinensis, Trigonella foenum-graecum and Azadirachta indica were (44 ±7%; 38 ± 4%; 31±1%; 28±2%; 27±2%, respectively). A maximum of 45% inhibition was observed with >25 μM concentrations of selected phytochemicals (rutin). A.latifolia, A. marmelos, T. foenum-graecum and M. indica extracts improved glucose tolerance, insulin release, reduced DPP-IV activity and increased circulating active GLP-1 in HFF obese-diabetic rats (P<0.05-0.001). These results suggest that ingestion of selected natural anti-diabetic plants, in particular A. latifolia, A. marmelos, T. foenum-graecum and M. indica can substantially inhibit DPP-IV and improve glucose homeostasis, thereby providing a useful therapeutic approach for the treatment of T2DM.
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22
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Hong Z, Hong M, Liu B, Zhang Y, Yang Y, Wu H. Preliminary Analysis of the Therapeutic Mechanism of Feiluoning in Convalescent Patients With COVID-19. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20977620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), is often accompanied by injury to pulmonary function and pulmonary fibrosis. Feiluoning (FLN) is a new Chinese medicine prescription which is available for the treatment of severe and critical convalescence of COVID-19 patients. FLN also has a positive effect on pulmonary function injury and pulmonary fibrosis. We explored the potential mechanism of FLN’s effect on the convalescent treatment of COVID-19. According to the pharmacodynamic activity parameters, we screened the active chemical constituents of FLN by comparing the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform. The Uniprot database was used to querying the corresponding target genes, and Cytoscape 3.6.1 was used to construct a herb-compound-target network. Protein interaction analysis, target gene function enrichment analysis, and signal pathway analysis were performed using the STRING, DAVID, and Kyoto Encyclopedia of Genes and Genomes pathway databases. Molecular docking was used to predict the binding capacity of the core compound with COVID-19 hydrolase 3 Cl and angiotensin-converting enzyme 2 (ACE2). The herb-compound-target network was successfully constructed and key targets identified, including prostaglandin G/H synthase 2, estrogen receptor 1, heat shock protein HSP 90, and androgen receptor. The major affected metabolic pathways were pathways in cancer, pancreatic cancer, nonsmall cell lung cancer, and toll-like receptor signaling. The core compounds of FLN, including quercetin, luteolin, kaempferol, and stigmasterol, could strongly bind to COVID-19 3 Cl hydrolase, and other compounds, including 7-O-methylisomucronulatol and medicocarpin, could strongly bind to ACE2. Thus, it is predicted that FLN has the characteristics of a multicomponent, multitarget, and multichannel overall control compound. FLN’s mechanism of action in the treatment of COVID-19 may be associated with the regulation of inflammation and immune-related signaling pathways, and the influence of COVID-19 3 Cl hydrolase binding ability.
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Affiliation(s)
- Zongchao Hong
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, P. R. China
| | - Maolin Hong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Bo Liu
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, P. R. China
| | - Ying Zhang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, P. R. China
| | - Yanfang Yang
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, P. R. China
- Faculty of Pharmacy, Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Wuhan, P. R. China
- Faculty of Pharmacy, Collaborative Innovation Center of Traditional Chinese Medicine of New Products for Geriatrics Hubei Province, Wuhan, P. R. China
| | - Hezhen Wu
- Faculty of Pharmacy, Hubei University of Chinese Medicine, Wuhan, P. R. China
- Faculty of Pharmacy, Key Laboratory of Traditional Chinese Medicine Resources and Chemistry of Hubei Province, Wuhan, P. R. China
- Faculty of Pharmacy, Collaborative Innovation Center of Traditional Chinese Medicine of New Products for Geriatrics Hubei Province, Wuhan, P. R. China
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23
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Soni VK, Mehta A, Ratre YK, Tiwari AK, Amit A, Singh RP, Sonkar SC, Chaturvedi N, Shukla D, Vishvakarma NK. Curcumin, a traditional spice component, can hold the promise against COVID-19? Eur J Pharmacol 2020; 886:173551. [PMID: 32931783 PMCID: PMC7832734 DOI: 10.1016/j.ejphar.2020.173551] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/17/2020] [Accepted: 09/10/2020] [Indexed: 12/16/2022]
Abstract
The severity of the recent pandemic and the absence of any specific medication impelled the identification of existing drugs with potential in the treatment of Coronavirus disease-2019 (COVID-19), caused by severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2). Curcumin, known for its pharmacological abilities especially as an anti-inflammatory agent, can be hypothesized as a potential candidate in the therapeutic regimen. COVID-19 has an assorted range of pathophysiological consequences, including pulmonary damage, elevated inflammatory response, coagulopathy, and multi-organ damage. This review summarizes the several evidences for the pharmacological benefits of curcumin in COVID-19-associated clinical manifestations. Curcumin can be appraised to hinder cellular entry, replication of SARS-CoV-2, and to prevent and repair COVID-19-associated damage of pneumocytes, renal cells, cardiomyocytes, hematopoietic stem cells, etc. The modulation and protective effect of curcumin on cytokine storm-related disorders are also discussed. Collectively, this review provides grounds for its clinical evaluation in the therapeutic management of SARS-CoV-2 infection.
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Affiliation(s)
- Vivek Kumar Soni
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Arundhati Mehta
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Yashwant Kumar Ratre
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Atul Kumar Tiwari
- Department of Zoology, Bhanwar Singh Porte Government Science College, Pendra, Chhattisgarh, India
| | - Ajay Amit
- Department of Forensic Science, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Rajat Pratap Singh
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Subash Chandra Sonkar
- Multidisciplinary Research Unit, Maulana Azad Medical College, University of Delhi, New Delhi, India
| | - Navaneet Chaturvedi
- Department of Molecular and Cell Biology, Henry Welcome Building, University of Leicester, Leicester, LE26AW, UK; School of Biochemical Engineering, Indian Institute of Technology-Banaras Hindu University (IIT-BHU), Varanasi, Uttar Pradesh, 221005, India
| | - Dhananjay Shukla
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India.
| | - Naveen Kumar Vishvakarma
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India.
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24
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Gao F, Fu Y, Yi J, Gao A, Jia Y, Cai S. Effects of Different Dietary Flavonoids on Dipeptidyl Peptidase-IV Activity and Expression: Insights into Structure-Activity Relationship. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12141-12151. [PMID: 33063510 DOI: 10.1021/acs.jafc.0c04974] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The inhibitory effects of 30 dietary flavonoids on dipeptidyl peptidase-IV (DPP-IV) were investigated to illustrate their quantitative structure-activity relationship (QSAR) and further explore their inhibition at the cellular level. Results of in vitro experiment show that isorhamnetin-3-O-glucoside (IC50, 6.53 ± 0.280 μM) had the strongest inhibition followed by cyanidin-3-O-glucoside (IC50, 8.26 ± 0.143 μM) and isorhamnetin-3-O-rutinoside (IC50, 8.57 ± 0.422 μM). A 3D QSAR model [comparative molecular field analysis, q2 = 0.502, optimum number of components (ONC) = 3, R2 = 0.983, F = 404.378, standard error of estimation (SEE) = 0.070, and two descriptors; comparative similarity index analysis, q2 = 0.580, ONC = 10, R2 = 0.999, F = 1617.594, SEE = 0.022, and four descriptors] indicates that the DPP-IV inhibition of flavonoid was facilitated by crucial structural factors. Position 3 of ring C favored bulky, hydrogen bond acceptors and hydrophilic and electron-donating substituents. The presence of minor and electron-withdrawing groups at position 4' of ring B and positions 5 and 7 of ring A could improve DPP-IV inhibition. Moreover, the three flavonoids mentioned above could effectively suppress DPP-IV activity and expression in Caco-2 cells. This work may supply new insights into dietary flavonoids as DPP-IV inhibitors for controlling blood glucose.
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Affiliation(s)
- Fengyi Gao
- School of Biology and Food, Shangqiu Normal University, Shangqiu, Henan Province 476000, People's Republic of China
| | - Yishan Fu
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, People's Republic of China
| | - Junjie Yi
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, People's Republic of China
| | - Anning Gao
- School of Biology and Food, Shangqiu Normal University, Shangqiu, Henan Province 476000, People's Republic of China
| | - Yijia Jia
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, People's Republic of China
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Shengbao Cai
- Faculty of Agriculture and Food, Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan Province 650500, People's Republic of China
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25
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Jin R, Teng X, Shang J, Wang D, Liu N. Identification of novel DPP-IV inhibitory peptides from Atlantic salmon (Salmo salar) skin. Food Res Int 2020; 133:109161. [PMID: 32466942 DOI: 10.1016/j.foodres.2020.109161] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/25/2020] [Accepted: 03/15/2020] [Indexed: 11/18/2022]
Abstract
The aim of this study was to identify dipeptidyl peptidase IV (DPP-IV) inhibitory peptides from salmon skin collagen hydrolysate, and to evaluate the possible inhibition mechanism of DPP-IV and peptide. Salmon skin collagen was hydrolyzed by pepsin, trypsin, papain, or Alcalase 2.4 L, separately. Trypsin hydrolysate (10 mg/mL) showed the highest inhibitory activity of 66.12 ± 0.68%. The hydrolysate was separated into three fractions by ultrafiltration, and the inhibitory IC50 of M1 (molecular weight <3 kDa) was 1.54 ± 0.06 mg/mL. M1 was separated by gel chromatography and RP-HPLC; A10 was the highest inhibitory fraction in the 12 fractions, i.e., IC50 was 0.79 ± 0.13 mg/mL. A novel peptide LDKVFR with the IC50 value of 0.1 ± 0.03 mg/mL (128.71 μM) was identified from A10. Molecular docking revealed that six hydrogen bonds and eight hydrophobic interactions between LDKVFR and DPP-IV were contributed to DPP-IV inhibition.
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Affiliation(s)
- Ritian Jin
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; Key Lab of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
| | - Xiangyu Teng
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; Key Lab of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
| | - Jiaqi Shang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; Key Lab of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China
| | - Dangfeng Wang
- College of Food Science and Technology, Bohai University, Food Safety Key Lab of Liaoning Province, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China; College of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Ning Liu
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; Key Lab of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, China.
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