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Abiola JO, Oluyemi AA, Idowu OT, Oyinloye OM, Ubah CS, Owolabi OV, Somade OT, Onikanni SA, Ajiboye BO, Osunsanmi FO, Nash O, Omotuyi OI, Oyinloye BE. Potential Role of Phytochemicals as Glucagon-like Peptide 1 Receptor (GLP-1R) Agonists in the Treatment of Diabetes Mellitus. Pharmaceuticals (Basel) 2024; 17:736. [PMID: 38931402 PMCID: PMC11206448 DOI: 10.3390/ph17060736] [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: 04/07/2024] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Currently, there is no known cure for diabetes. Different pharmaceutical therapies have been approved for the management of type 2 diabetes mellitus (T2DM), some are in clinical trials and they have been classified according to their route or mechanism of action. Insulin types, sulfonylureas, biguanides, alpha-glucosidase inhibitors, thiazolidinediones, meglitinides, sodium-glucose cotransporter type 2 inhibitors, and incretin-dependent therapies (glucagon-like peptide-1 receptor agonists: GLP-1R, and dipeptidyl peptidase 4 inhibitors: DPP-4). Although some of the currently available drugs are effective in the management of T2DM, the side effects resulting from prolonged use of these drugs remain a serious challenge. GLP-1R agonists are currently the preferred medications to include when oral metformin alone is insufficient to manage T2DM. Medicinal plants now play prominent roles in the management of various diseases globally because they are readily available and affordable as well as having limited and transient side effects. Recently, studies have reported the ability of phytochemicals to activate glucagon-like peptide-1 receptor (GLP-1R), acting as an agonist just like the GLP-1R agonist with beneficial effects in the management of T2DM. Consequently, we propose that careful exploration of phytochemicals for the development of novel therapeutic candidates as GLP-1R agonists will be a welcome breakthrough in the management of T2DM and the co-morbidities associated with T2DM.
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Affiliation(s)
- Julianah Ore Abiola
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria; (J.O.A.)
- Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja 09004, Nigeria
- Institute of Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, Ado-Ekiti 360001, Nigeria
| | - Ayoola Abidemi Oluyemi
- Institute of Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, Ado-Ekiti 360001, Nigeria
| | - Olajumoke Tolulope Idowu
- Industrial Chemistry Unit, Department of Chemical Sciences, College of Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria
| | - Oluwatoyin Mary Oyinloye
- Department of Mathematics, Science and Technology Education, Faculty of Education, University of Zululand, Kwadlangezwa 3886, South Africa
| | - Chukwudi Sunday Ubah
- Department of Epidemiology and Biostatistics, College of Public Health, Temple University, Philadelphia, PA 19121, USA
| | - Olutunmise Victoria Owolabi
- Medical Biochemistry Unit, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria
| | - Oluwatobi T. Somade
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria; (J.O.A.)
- Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta 111101, Nigeria
| | - Sunday Amos Onikanni
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria; (J.O.A.)
- College of Medicine, Graduate Institute of Biomedical Sciences, China Medical University, Taichung 40402, Taiwan
| | - Basiru Olaitan Ajiboye
- Institute of Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, Ado-Ekiti 360001, Nigeria
- Phytomedicine and Molecular Toxicology Research Laboratory, Department of Biochemistry, Federal University Oye-Ekiti, Oye-Ekiti 371104, Nigeria
| | - Foluso Oluwagbemiga Osunsanmi
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa
| | - Oyekanmi Nash
- Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja 09004, Nigeria
| | - Olaposi Idowu Omotuyi
- Institute of Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, Ado-Ekiti 360001, Nigeria
- Department of Pharmacology and Toxicology, College of Pharmacy, Afe Babalola University, Ado-Ekiti 360001, Nigeria
| | - Babatunji Emmanuel Oyinloye
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, Ado-Ekiti 360001, Nigeria; (J.O.A.)
- Institute of Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, Ado-Ekiti 360001, Nigeria
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, Kwadlangezwa 3886, South Africa
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Yamashita Y. Physiological functions of poorly absorbed polyphenols via the glucagon-like peptide-1. Biosci Biotechnol Biochem 2024; 88:493-498. [PMID: 38378922 DOI: 10.1093/bbb/zbae021] [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: 11/17/2023] [Accepted: 02/13/2024] [Indexed: 02/22/2024]
Abstract
Polyphenols are compounds of plant origin with several documented bioactivities related to health promotion. Some polyphenols are hard to be absorbed into the body due to their structural characteristics. This review focuses on the health beneficial effects of polyphenols mediated by intestinal hormones, particularly related to the systemic functions through the secretion of glucagon-like peptide-1 (GLP-1), an enteric hormone that stimulates postprandial insulin secretion. GLP-1 is secreted from L cells in the distal small intestine. Therefore, some poorly absorbed polyphenols are known to have the ability to act on the intestines and promote GLP-1 secretion. It has been reported that it not only reduces hyperglycemia but also prevents obesity by reduction of overeating and improves blood vessel function. This review discusses examples of health effects of polyphenols mediated by GLP-1 secretion.
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Affiliation(s)
- Yoko Yamashita
- Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan
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González I, Lindner C, Schneider I, Diaz E, Morales MA, Rojas A. Emerging and multifaceted potential contributions of polyphenols in the management of type 2 diabetes mellitus. World J Diabetes 2024; 15:154-169. [PMID: 38464365 PMCID: PMC10921170 DOI: 10.4239/wjd.v15.i2.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/16/2023] [Accepted: 01/19/2024] [Indexed: 02/04/2024] Open
Abstract
Type 2 diabetes mellitus (T2DM) is recognized as a serious public health concern with a considerable impact on human life, long-term health expenditures, and substantial health losses. In this context, the use of dietary polyphenols to prevent and manage T2DM is widely documented. These dietary compounds exert their beneficial effects through several actions, including the protection of pancreatic islet β-cell, the antioxidant capacities of these molecules, their effects on insulin secretion and actions, the regulation of intestinal microbiota, and their contribution to ameliorate diabetic complications, particularly those of vascular origin. In the present review, we intend to highlight these multifaceted actions and the molecular mechanisms by which these plant-derived secondary metabolites exert their beneficial effects on type 2 diabetes patients.
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Affiliation(s)
- Ileana González
- Biomedical Research Laboratories, Faculty of Medicine, Catholic University of Maule, Talca 34600000, Chile
| | - Cristian Lindner
- Department of Radiology, Faculty of Medicine, University of Concepción, Concepción 4030000, Chile
| | - Ivan Schneider
- Centre of Primary Attention, South Metropolitan Health Service, Santiago 3830000, Chile
| | - Erik Diaz
- Faculty of Medicine, Catholic University of Maule, Talca 3460000, Chile
| | - Miguel Angel Morales
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, University of Chile, Santiago 8320000, Chile
| | - Armando Rojas
- Biomedical Research Laboratories, Faculty of Medicine, Catholic University of Maule, Talca 34600000, Chile
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Islam MR, Rauf A, Akash S, Trisha SI, Nasim AH, Akter M, Dhar PS, Ogaly HA, Hemeg HA, Wilairatana P, Thiruvengadam M. Targeted therapies of curcumin focus on its therapeutic benefits in cancers and human health: Molecular signaling pathway-based approaches and future perspectives. Biomed Pharmacother 2024; 170:116034. [PMID: 38141282 DOI: 10.1016/j.biopha.2023.116034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 12/25/2023] Open
Abstract
The curry powder spices turmeric (Curcuma longa L.), which contains curcumin (diferuloylmethane), an orange-yellow chemical. Polyphenols are the most commonly used sources of curcumin. It combats oxidative stress and inflammation in diseases, such as hyperlipidemia, metabolic syndrome, arthritis, and depression. Most of these benefits are due to their anti-inflammatory and antioxidant properties. Curcumin consumption leads to decreased bioavailability, resulting in limited absorption, quick metabolism, and quick excretion, which hinders health improvement. Numerous factors can increase its bioavailability. Piperine enhances bioavailability when combined with curcumin in a complex. When combined with other enhancing agents, curcumin has a wide spectrum of health benefits. This review evaluates the therapeutic potential of curcumin with a specific emphasis on its approach based on molecular signaling pathways. This study investigated its influence on the progression of cancer, inflammation, and many health-related mechanisms, such as cell proliferation, apoptosis, and metastasis. Curcumin has a significant potential for the prevention and treatment of various diseases. Curcumin modulates several biochemical pathways and targets involved in cancer growth. Despite its limited tissue accumulation and bioavailability when administered orally, curcumin has proven useful. This review provides an in-depth analysis of curcumin's therapeutic applications, its molecular signaling pathway-based approach, and its potential for precision medicine in cancer and human health.
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Affiliation(s)
- Md Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan.
| | - Shopnil Akash
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Sadiya Islam Trisha
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Akram Hossain Nasim
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Muniya Akter
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Puja Sutro Dhar
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka 1216, Bangladesh
| | - Hanan A Ogaly
- Chemistry Department, College of Science, King Khalid University, Abha 61421, Saudi Arabia
| | - Hassan A Hemeg
- Department of Medical Laboratory Technology, College of Applied Medical Sciences, Taibah University, Al-Medinah Al-Monawara, Saudi Arabia
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
| | - Muthu Thiruvengadam
- Department of Applied Bioscience, College of Life and Environmental Science, Konkuk University, Seoul 05029, Republic of Korea; Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai 600077, India.
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Ahmad K, Shaikh S, Lim JH, Ahmad SS, Chun HJ, Lee EJ, Choi I. Therapeutic application of natural compounds for skeletal muscle-associated metabolic disorders: A review on diabetes perspective. Biomed Pharmacother 2023; 168:115642. [PMID: 37812896 DOI: 10.1016/j.biopha.2023.115642] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/19/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
Skeletal muscle (SM) plays a vital role in energy and glucose metabolism by regulating insulin sensitivity, glucose uptake, and blood glucose homeostasis. Impaired SM metabolism is strongly linked to several diseases, particularly type 2 diabetes (T2D). Insulin resistance in SM may result from the impaired activities of insulin receptor tyrosine kinase, insulin receptor substrate 1, phosphoinositide 3-kinase, and AKT pathways. This review briefly discusses SM myogenesis and the critical roles that SM plays in insulin resistance and T2D. The pharmacological targets of T2D which are associated with SM metabolism, such as DPP4, PTB1B, SGLT, PPARγ, and GLP-1R, and their potential modulators/inhibitors, especially natural compounds, are discussed in detail. This review highlights the significance of SM in metabolic disorders and the therapeutic potential of natural compounds in targeting SM-associated T2D targets. It may provide novel insights for the future development of anti-diabetic drug therapies. We believe that scientists working on T2D therapies will benefit from this review by enhancing their knowledge and updating their understanding of the subject.
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Affiliation(s)
- Khurshid Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea
| | - Sibhghatulla Shaikh
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea
| | - Jeong Ho Lim
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea
| | - Syed Sayeed Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea
| | - Hee Jin Chun
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea
| | - Eun Ju Lee
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea
| | - Inho Choi
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, South Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, South Korea.
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Pathomwichaiwat T, Jinatongthai P, Prommasut N, Ampornwong K, Rattanavipanon W, Nathisuwan S, Thakkinstian A. Effects of turmeric (Curcuma longa) supplementation on glucose metabolism in diabetes mellitus and metabolic syndrome: An umbrella review and updated meta-analysis. PLoS One 2023; 18:e0288997. [PMID: 37471428 PMCID: PMC10359013 DOI: 10.1371/journal.pone.0288997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 07/07/2023] [Indexed: 07/22/2023] Open
Abstract
AIMS This study aims to comprehensively review the existing evidence and conduct analysis of updated randomized controlled trials (RCTs) of turmeric (Curcuma longa, CL) and its related bioactive compounds on glycemic and metabolic parameters in patients with type 2 diabetes (T2DM), prediabetes, and metabolic syndrome (MetS) together with a sub-group analysis of different CL preparation forms. METHODS An umbrella review (UR) and updated systematic reviews and meta-analyses (SRMAs) were conducted to evaluate the effects of CL compared with a placebo/standard treatment in adult T2DM, prediabetes, and MetS. The MEDLINE, Embase, The Cochrane Central Register of Control Trials, and Scopus databases were searched from inception to September 2022. The primary efficacy outcomes were hemoglobin A1C (HbA1C) and fasting blood glucose (FBG). The corrected covered area (CCA) was used to assess overlap. Mean differences were pooled across individual RCTs using a random-effects model. Subgroup and sensitivity analyses were performed for various CL preparation forms. RESULTS Fourteen SRMAs of 61 individual RCTs were included in the UR. The updated SRMA included 28 studies. The CCA was 11.54%, indicating high overlap across SRMAs. The updated SRMA revealed significant reduction in FBG and HbA1C with CL supplementation, obtaining a mean difference (95% confidence interval [CI]) of -8.129 (-12.175, -4.084) mg/dL and -0.134 (-0.304, -0.037) %, respectively. FBG and HbA1C levels decreased with all CL preparation forms as did other metabolic parameters levels. The results of the sensitivity and subgroup analyses were consistent with those of the main analysis. CONCLUSION CL supplementation can significantly reduce FBG and HbA1C levels and other metabolic parameters in T2DM and mitigate related conditions, including prediabetes and MetS. TRIAL REGISTRATION PROSPERO (CRD42016042131).
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Affiliation(s)
- Thanika Pathomwichaiwat
- Faculty of Pharmacy, Department of Pharmaceutical Botany, Mahidol University, Bangkok, Thailand
| | - Peerawat Jinatongthai
- Faculty of Pharmaceutical Sciences, Pharmacy Practice Division, Ubon Ratchathani University, Ubon Ratchathani, Thailand
| | - Napattaoon Prommasut
- Faculty of Pharmacy, Department of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Kanyarat Ampornwong
- Faculty of Pharmacy, Department of Pharmacy, Mahidol University, Bangkok, Thailand
| | | | - Surakit Nathisuwan
- Faculty of Pharmacy, Department of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Ammarin Thakkinstian
- Faculty of Medicine Ramathibodi Hospital, Department of Clinical Epidemiology and Biostatistics, Mahidol University, Bangkok, Thailand
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Akter T, Zahan MS, Nawal N, Rahman MH, Tanjum TN, Arafat KI, Moni A, Islam MN, Uddin MJ. Potentials of curcumin against polycystic ovary syndrome: Pharmacological insights and therapeutic promises. Heliyon 2023; 9:e16957. [PMID: 37346347 PMCID: PMC10279838 DOI: 10.1016/j.heliyon.2023.e16957] [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: 08/24/2022] [Revised: 04/24/2023] [Accepted: 06/02/2023] [Indexed: 06/23/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is a common hormonal disorder among women (4%-20%) when the ovaries create abnormally high levels of androgens, the male sex hormones that are typically present in women in trace amounts. The primary characteristics of PCOS include oxidative stress, inflammation, hyperglycemia, hyperlipidemia, hyperandrogenism, and insulin resistance. Generally, metformin, spironolactone, eflornithine and oral contraceptives are used to treat PCOS, despite their several side effects. Therefore, finding a potential candidate for treating PCOS is necessary. Curcumin is a major active natural polyphenolic compound derived from turmeric (Curcuma longa). A substantial number of studies have shown that curcumin has anti-inflammatory, anti-oxidative stress, antibacterial, and anti-apoptotic activities. In addition, curcumin reduces hyperglycemia, hyperlipidemia, hyperandrogenism, and insulin resistance in various conditions, including PCOS. The review highlighted the therapeutic aspects of curcumin against the pathophysiology of PCOS. We also offer a hypothesis to improve the development of medicines based on curcumin against PCOS.
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Affiliation(s)
- Tanzina Akter
- ABEx Bio-Research Center, East Azampur, Dhaka-1230, Bangladesh
| | | | - Nafisa Nawal
- ABEx Bio-Research Center, East Azampur, Dhaka-1230, Bangladesh
| | | | | | | | - Akhi Moni
- ABEx Bio-Research Center, East Azampur, Dhaka-1230, Bangladesh
| | - Mohammad Nazrul Islam
- ABEx Bio-Research Center, East Azampur, Dhaka-1230, Bangladesh
- Department of Biotechnology, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh
| | - Md Jamal Uddin
- ABEx Bio-Research Center, East Azampur, Dhaka-1230, Bangladesh
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Ghanbarzadeh-Ghashti N, Ghanbari-Homaie S, Shaseb E, Abbasalizadeh S, Mirghafourvand M. The effect of Curcumin on metabolic parameters and androgen level in women with polycystic ovary syndrome: a randomized controlled trial. BMC Endocr Disord 2023; 23:40. [PMID: 36788534 PMCID: PMC9930238 DOI: 10.1186/s12902-023-01295-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Considering the high prevalence of polycystic ovary syndrome (PCOS) in women of reproductive age and the metabolic disorders associated with it, this study was conducted to determine the effects of curcumin on metabolic indices and androgen level (primary outcomes), and menstruation characteristics, and hirsutism (secondary outcomes) in women with PCOS. METHODS This triple-blind randomized controlled trial was conducted on women with PCOS who visited the health centers at Eslamshahr County (Tehran Province-Iran) from 2020 to 2022. The participants were allocated into two groups (curcumin and placebo) using block randomization method. The treatment group received two 500 mg edible curcumin tablets together at the same time per day for twelve weeks while the control group received placebo tablets similar to curcumin. Biochemical parameters such as Fasting Blood Insulin (FBI), Fasting Blood Sugar (FBS), triglyceride, total cholesterol, Low Density Lipoprotein- cholesterol (LDL-C), High Density Lipoprotein- cholesterol (HDL-C) were measured before intervention and then 3 months after the intervention. Sex Hormone Binding Globulin (SHBG) and testosterone serum levels were measured 3 months after the intervention. Questionnaires regarding the menstrual cycle characteristics and the Ferriman-Gallwey score were also filled for evaluating hirsutism before the intervention as well as 3 months after the intervention. The independent t-test, Mann-Whitney U test, and ANCOVA were used to analyze the data. RESULTS There was no statistically significant difference between the two groups in terms of socio-demographic and the baseline levels of measured outcomes. After 12 weeks of intervention, the mean serum FBS levels in the curcumin group were significantly lower than in the placebo group (mean difference: 6.24; 95%confidence interval: -11.73 to -0.76; P = 0.027) but there was no significant difference between the two groups in terms of triglyceride (P = 0.351), cholesterol (P = 0.528), LDL (P = 0.064), HDL (P = 0.306), FBI (p = 0.929), SHBG (p = 0.682), and testosterone (p = 0.133) serum levels. After the intervention, amenorrhea and oligomenorrhea frequency in the curcumin group was significantly lower than in the placebo group (13% vs. 22%, P = 0.038). There was no significant difference in terms of duration of menstruation (P = 0.286) and hirsutism (P = 0.630) between the two groups. CONCLUSION Curcumin decreased FBS levels and improved menstruation characteristics (amenorrhea, oligomenorrhea, and menstrual irregularities) in women with PCOS but did not affect other metabolic, hormonal, and hirsutism indices. More studies using a larger sample size are required for a definitive conclusion. TRIAL REGISTRATION Iranian Registry of Clinical Trials (IRCT): IRCT20120718010324N51 Date of registration: 30/11/2019. URL: https://en.irct.ir/user/trial/40597/view ; Date of first registration: 30/11/2020.
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Affiliation(s)
| | - Solmaz Ghanbari-Homaie
- Department of Midwifery, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elnaz Shaseb
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shamsi Abbasalizadeh
- Women’s Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mojgan Mirghafourvand
- Social Determinants of Health Research Center, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran
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Odongo K, Hironao KY, Yamashita Y, Ashida H. Development of sandwich ELISAs for detecting glucagon-like peptide-1 secretion from intestinal L-cells and their application in STC-1 cells and mice. J Clin Biochem Nutr 2023; 72:28-38. [PMID: 36777078 PMCID: PMC9899920 DOI: 10.3164/jcbn.22-78] [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: 07/20/2022] [Accepted: 09/03/2022] [Indexed: 11/05/2022] Open
Abstract
Certain nutrients stimulate glucagon-like peptide-1 (GLP-1) secretion from the intestinal enteroendocrine L-cells, but due to rapid degradation by the DPP-4 enzyme, >90% is converted to inactive metabolite before reaching the target organs via circulation. Plants are a source of potent bioactive compounds that promote endogenous secretion of GLP-1 from L-cells. To search for the effective bioactive compound from a vast library of natural compounds, a reliable and low-cost assay is required considering the high cost of commercial assays. We developed a low-cost sandwich enzyme-linked immunosorbent assays (s-ELISAs) for detecting 'total', 'sensitive active', and 'wide-range active' GLP-1. The s-ELISAs exhibited high sensitivity with measurement ranges between 0.94~240, 0.98~62.5, and 4.8~4,480 pmol/L, respectively. High precision was observed; i.e., CVs within 5% and 20% for intra- and inter-assay variations, respectively, and excellent recovery of exogenous GLP-1 from assay buffer. The developed s-ELISAs had the same performance as the commercial kits and approximately 80% cheaper cost. For their application, cinnamtannin A2-induced GLP-1 secretion was confirmed in STC-1 cells consistent with our previous findings. The s-ELISAs were further validated by measuring plasma GLP-1 level in mice after oral administration of black soy bean seed coat extract containing cinnamtannin A2.
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Affiliation(s)
- Kevin Odongo
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Ken-yu Hironao
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Yoko Yamashita
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Hitoshi Ashida
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan,To whom correspondence should be addressed. E-mail:
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Li J, Sun L. The effects of curcumin supplementation on high-sensitivity C-reactive protein, serum adiponectin, and lipid profile in patients with type 2 diabetes: A protocol for systematic review and meta-analysis. Medicine (Baltimore) 2022; 101:e31942. [PMID: 36626493 PMCID: PMC9750569 DOI: 10.1097/md.0000000000031942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is an ensemble of metabolic diseases that has reached pandemic dimensions all over the world. There is a lack of evidence on the contribution of curcumin in the treatment of T2DM. We conducted a protocol for systematic review and meta-analysis to evaluate whether curcumin supplementation is effective and safe in T2DM patients. METHODS The systematic review will follow the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-analyses Protocols (PRISMA-P). We will obtain studies through PubMed, Cochrane Library, Embase, Web of Science, and Medline databases. In addition, we will also collect 4 databases of China: China National Knowledge Infrastructure, China Biomedical Literature Database, China Science Journal Database, and Wan-fang Database. Eligible study conference abstracts and reference lists of manuscripts will be searched. The data collection and analysis will be conducted independently by 2 reviewers. Meta-analysis will be performed using Review Manager software, version 5.3 (Update Software Ltd, Oxford, Oxon, UK). RESULTS The results of this systematic review and meta-analysis will be published in a peer-reviewed journal. CONCLUSION The findings of this systematic review may encourage supplementation of curcumin and its preparation specifically in T2DM patients. Nevertheless, the application of curcumin supplementation in clinical practice should be taken with individual's contributing factors.
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Affiliation(s)
- Jie Li
- Department of Clinical Laboratory, First People’s Hospital of Tianshui, Gansu, China
| | - Lifang Sun
- Department of Blood Transfusion, First People’s Hospital of Tianshui, Gansu, China
- * Correspondence: Lifang Sun, Department of Blood Transfusion, First People’s Hospital of Tianshui, Gansu, China (e-mail: )
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11
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Hellmann PH, Bagger JI, Carlander KR, Forman J, Chabanova E, Svenningsen JS, Holst JJ, Gillum MP, Vilsbøll T, Knop FK. The effect of curcumin on hepatic fat content in individuals with obesity. Diabetes Obes Metab 2022; 24:2192-2202. [PMID: 35775631 PMCID: PMC9804166 DOI: 10.1111/dom.14804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 01/05/2023]
Abstract
AIM To evaluate the effect of curcumin treatment on hepatic fat content in obese individuals. MATERIALS AND METHODS In a double-blind, parallel-group trial, 37 obese, non-diabetic individuals were randomized to placebo or curcumin treatment for 6 weeks. Curcumin was dosed as lecithin-formulated tablet; 200 mg twice daily. The primary endpoint was hepatic fat content as assessed by magnetic resonance spectroscopy (MRS). Other endpoints included anthropometric measurements, hepatic biomarkers including FibroScan measurements, metabolic variables, inflammation markers, appetite measures and ad libitum food intake. RESULTS Baseline characteristics (mean ± SD) were age 46 ± 14 years, hepatic fat content 12.2% ± 8.8% points, body mass index 38.8 ± 6.1 kg/m2 and waist circumference 125.8 ± 12.3 cm. After 6 weeks of treatment with curcumin, hepatic fat content was changed by -0.86% points (95% CI -3.65; 1.94) compared with 0.71% points (95% CI - 2.08; 3.51) with placebo, thus resulting in a non-significant estimated treatment difference of -1.57% points (95% CI -5.36; 2.22, P = .412). Compared with placebo, curcumin treatment caused small reductions in fasting plasma glucose (estimated treatment difference [ETD] - 0.24 mmol/L [95% CI -0.45; -0.03]), triglycerides (ETD [percentage change] -20.22% [95% CI -33.21; -6.03]) and gamma glutamyltransferase (ETD [percentage change] -15.70% [95% CI -23.32; -7.32]), but except for gamma glutamyltransferase, none of these differences remained statistically significant after adjusting for multiple testing. Treatment was well tolerated. CONCLUSIONS Compared with placebo, curcumin treatment for 6 weeks had no significant effect on MRS-assessed hepatic fat content in obese individuals with primarily mild steatosis. Curcumin was well tolerated.
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Affiliation(s)
- Pernille H. Hellmann
- Center for Clinical Metabolic Research, Gentofte HospitalUniversity of CopenhagenHellerupDenmark
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Jonatan I. Bagger
- Center for Clinical Metabolic Research, Gentofte HospitalUniversity of CopenhagenHellerupDenmark
- Clinical Research, Steno Diabetes Center CopenhagenHerlevDenmark
| | - Katrine R. Carlander
- Center for Clinical Metabolic Research, Gentofte HospitalUniversity of CopenhagenHellerupDenmark
| | - Julie Forman
- Section of Biostatistics, Department of Public Health, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Elizaveta Chabanova
- Department of Radiology, Herlev HospitalUniversity of CopenhagenHerlevDenmark
| | - Jens S. Svenningsen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Jens J. Holst
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Department of Biomedical Sciences, Faculty of Health and Medical SciencesUniversity of CopenhagenDenmark
| | - Matthew P. Gillum
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Department of Biomedical Sciences, Faculty of Health and Medical SciencesUniversity of CopenhagenDenmark
| | - Tina Vilsbøll
- Center for Clinical Metabolic Research, Gentofte HospitalUniversity of CopenhagenHellerupDenmark
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Clinical Research, Steno Diabetes Center CopenhagenHerlevDenmark
| | - Filip K. Knop
- Center for Clinical Metabolic Research, Gentofte HospitalUniversity of CopenhagenHellerupDenmark
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
- Clinical Research, Steno Diabetes Center CopenhagenHerlevDenmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
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12
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Reis PCDSG, Alves AGP, Guillo LA, Sousa MAD, Trindade NR, Silva MS. Curcumin supplementation reduces blood glucose and serum lipids of Brazilian women with high waist circumference: a randomized clinical trial. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2022; 66:800-807. [PMID: 36155119 PMCID: PMC10118764 DOI: 10.20945/2359-3997000000513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Objective To evaluate the effect of curcumin supplementation on the body compositions and biochemical parameters of Brazilian women with high waist circumferences. Methods This is a blind, randomized, placebo-controlled clinical trial conducted in 2016 with 35 Brazilian women with high waist circumference (WC). In total, 80 participants were randomized [38 in the placebo group (PG) and 42 in the supplemented group (SG)], but at the end of the protocol, 20 individuals in the PG and 15 in the SG were evaluated. The sample consumed one capsule of curcumin (500 mg/day) (Curcumin C3 Complex®) or a placebo for 90 days. Body weight, height, body mass index, WC, body fat, fat free mass, fasting glucose (FG), lipid profile [triglycerides (TGs), total cholesterol (TC), HDL-c and LDL-c], physical activity level and food intake (energy, carbohydrate, total fat and protein) data were evaluated before and after the intervention. Results Curcumin supplementation reduced body mass (p < 0.040) but did not alter other anthropometric parameters or body composition (p ≥ 0.050). In relation to the biochemical profile, the SG saw reductions in FG (p < 0.001), TGs (p < 0.001) and TC (p = 0.001) compared with the PG. At the baseline and during the intervention, the practice of physical activity and food intake did not differ between the SG and PG (p ≥ 0.050). Conclusion Curcumin supplementation improved the blood glucose and lipid profile of Brazilian women with high WC, without altering body composition. New studies with larger sample sizes and longer durations are important for identifying more robust data regarding the proposal of this work.
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13
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Lok KH, Wareham NJ, Nair RS, How CW, Chuah LH. Revisiting the concept of incretin and enteroendocrine L-cells as type 2 diabetes mellitus treatment. Pharmacol Res 2022; 180:106237. [PMID: 35487405 PMCID: PMC7614293 DOI: 10.1016/j.phrs.2022.106237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/08/2022] [Accepted: 04/22/2022] [Indexed: 12/19/2022]
Abstract
The significant growth in type 2 diabetes mellitus (T2DM) prevalence strikes a common threat to the healthcare and economic systems globally. Despite the availability of several anti-hyperglycaemic agents in the market, none can offer T2DM remission. These agents include the prominent incretin-based therapy such as glucagon-like peptide-1 receptor (GLP-1R) agonists and dipeptidyl peptidase-4 inhibitors that are designed primarily to promote GLP-1R activation. Recent interest in various therapeutically useful gastrointestinal hormones in T2DM and obesity has surged with the realisation that enteroendocrine L-cells modulate the different incretins secretion and glucose homeostasis, reflecting the original incretin definition. Targeting L-cells offers promising opportunities to mimic the benefits of bariatric surgery on glucose homeostasis, bodyweight management, and T2DM remission. Revising the fundamental incretin theory is an essential step for therapeutic development in this area. Therefore, the present review explores enteroendocrine L-cell hormone expression, the associated nutrient-sensing mechanisms, and other physiological characteristics. Subsequently, enteroendocrine L-cell line models and the latest L-cell targeted therapies are reviewed critically in this paper. Bariatric surgery, pharmacotherapy and new paradigm of L-cell targeted pharmaceutical formulation are discussed here, offering both clinician and scientist communities a new common interest to push the scientific boundary in T2DM therapy.
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Affiliation(s)
- Kok-Hou Lok
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
| | - Nicholas J Wareham
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia; MRC Epidemiology Unit, University of Cambridge, Institute of Metabolic Science, Cambridge, UK.
| | - Rajesh Sreedharan Nair
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
| | - Chee Wun How
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
| | - Lay-Hong Chuah
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia.
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14
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Oliveira S, Monteiro-Alfredo T, Henriques R, Ribeiro CF, Seiça R, Cruz T, Cabral C, Fernandes R, Piedade F, Robalo MP, Matafome P, Silva S. Improvement of Glycaemia and Endothelial Function by a New Low-Dose Curcuminoid in an Animal Model of Type 2 Diabetes. Int J Mol Sci 2022; 23:ijms23105652. [PMID: 35628465 PMCID: PMC9144453 DOI: 10.3390/ijms23105652] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/12/2022] [Accepted: 05/16/2022] [Indexed: 11/16/2022] Open
Abstract
Curcumin has been suggested as a promising treatment for metabolic diseases, but the high doses required limit its therapeutic use. In this study, a new curcuminoid is synthesised to increase curcumin anti-inflammatory and antioxidant potential and to achieve hypoglycaemic and protective vascular effects in type 2 diabetic rats in a lower dose. In vitro, the anti-inflammatory effect was determined through the Griess reaction, and the antioxidant activity through ABTS and TBARS assays. In vivo, Goto-Kakizaki rats were treated for 2 weeks with the equimolar dose of curcumin (40 mg/kg/day) or curcuminoid (52.4 mg/kg/day). Fasting glycaemia, insulin tolerance, plasma insulin, insulin signalling, serum FFA, endothelial function and several markers of oxidative stress were evaluated. Both compounds presented a significant anti-inflammatory effect. Moreover, the curcuminoid had a marked hypoglycaemic effect, accompanied by higher GLUT4 levels in adipose tissue. Both compounds increased NO-dependent vasorelaxation, but only the curcuminoid exacerbated the response to ascorbic acid, consistent with a higher decrease in vascular oxidative and nitrosative stress. SOD1 and GLO1 levels were increased in EAT and heart, respectively. Altogether, these data suggest that the curcuminoid developed here has more pronounced effects than curcumin in low doses, improving the oxidative stress, endothelial function and glycaemic profile in type 2 diabetes.
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Affiliation(s)
- Sara Oliveira
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Institute of Physiology, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
| | - Tamaeh Monteiro-Alfredo
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Institute of Physiology, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
- Research Group on Biotechnology and Bioprospecting Applied to Metabolism (GEBBAM), Federal University of Grande Dourados, Dourados 79825-070, MS, Brazil
| | - Rita Henriques
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (R.H.); (T.C.)
| | - Carlos Fontes Ribeiro
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Raquel Seiça
- Institute of Physiology, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
| | - Teresa Cruz
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (R.H.); (T.C.)
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Célia Cabral
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
| | - Rosa Fernandes
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
| | - Fátima Piedade
- CQE, Complexo I, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (F.P.); (M.P.R.)
- Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Maria Paula Robalo
- CQE, Complexo I, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (F.P.); (M.P.R.)
- Instituto Superior de Engenharia de Lisboa (ISEL), Instituto Politécnico de Lisboa, 1959-007 Lisbon, Portugal
| | - Paulo Matafome
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Institute of Physiology, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;
- Clinical-Academic Center of Coimbra (CACC), University of Coimbra, 3000-548 Coimbra, Portugal;
- Instituto Politécnico de Coimbra, Coimbra Health School (ESTeSC), 3046-854 Coimbra, Portugal
- Correspondence:
| | - Sónia Silva
- Coimbra Institute of Clinical and Biomedical Research (iCBR), Faculty of Medicine and Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3000-548 Coimbra, Portugal; (S.O.); (T.M.-A.); (C.C.); (R.F.); (S.S.)
- Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal; (R.H.); (T.C.)
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15
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Tang X, Xiong K, Wassie T, Wu X. Curcumin and Intestinal Oxidative Stress of Pigs With Intrauterine Growth Retardation: A Review. Front Nutr 2022; 9:847673. [PMID: 35571913 PMCID: PMC9101057 DOI: 10.3389/fnut.2022.847673] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/15/2022] [Indexed: 12/12/2022] Open
Abstract
Intrauterine growth restriction (IUGR) refers to the slow growth and development of a mammalian embryo/fetus or fetal organs during pregnancy, which is popular in swine production and causes considerable economic losses. Nutritional strategies have been reported to improve the health status and growth performance of IUGR piglets, among which dietary curcumin supplementation is an efficient alternative. Curcumin is a natural lipophilic polyphenol derived from the rhizome of Curcuma longa with many biological activities. It has been demonstrated that curcumin promotes intestinal development and alleviates intestinal oxidative damage. However, due to its low bioavailability caused by poor solubility, chemical instability, and rapid degradation, the application of curcumin in animal production is rare. In this manuscript, the structural-activity relationship to enhance the bioavailability, and the nutritional effects of curcumin on intestinal health from the aspect of protecting piglets from IUGR associated intestinal oxidative damage were summarized to provide new insight into the application of curcumin in animal production.
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Affiliation(s)
- Xiaopeng Tang
- State Engineering Technology Institute for Karst Desertfication Control, School of Karst Science, Guizhou Normal University, Guiyang, China
| | - Kangning Xiong
- State Engineering Technology Institute for Karst Desertfication Control, School of Karst Science, Guizhou Normal University, Guiyang, China
- *Correspondence: Kangning Xiong,
| | - Teketay Wassie
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Xin Wu
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Laboratory of Nutrient Resources and Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
- Xin Wu,
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16
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El Shahawy M, El Deeb M. Assessment of the possible ameliorative effect of curcumin nanoformulation on the submandibular salivary gland of alloxan-induced diabetes in a rat model (Light microscopic and ultrastructural study). Saudi Dent J 2022; 34:375-384. [PMID: 35814842 PMCID: PMC9263756 DOI: 10.1016/j.sdentj.2022.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 04/17/2022] [Accepted: 04/22/2022] [Indexed: 11/28/2022] Open
Abstract
Background Objective Methods Results Conclusion
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17
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Shojaei-Zarghani S, Molani-Gol R, Rafraf M. Curcumin and Polycystic Ovary Syndrome: a Systematic Review. Reprod Sci 2022; 29:2105-2118. [DOI: 10.1007/s43032-021-00826-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/05/2021] [Indexed: 10/19/2022]
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Identification of G protein-coupled receptor 55 (GPR55) as a target of curcumin. NPJ Sci Food 2022; 6:4. [PMID: 35031622 PMCID: PMC8760322 DOI: 10.1038/s41538-021-00119-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 12/13/2021] [Indexed: 12/22/2022] Open
Abstract
The identification of molecular targets of bioactive food components is important to understand the mechanistic aspect of their physiological functions. Here, we have developed a screening system that enables us to determine the activation of G protein-coupled receptors (GPCRs) by food components and have identified GPR55 as a target for curcumin. Curcumin activated GPR55 and induced serum-response element- and serum-response factor-mediated transcription, which were inhibited by Rho kinase and GPR55 antagonists. Both the methoxy group and the heptadienone moiety of curcumin were required for GPR55 activation. The F1905.47 residue of GPR55 was important for the interaction with curcumin. The curcumin-induced secretion of glucagon-like peptide-1 in GLUTag cells was inhibited by a GPR55 antagonist. These results indicate that expression screening is a useful system to identify GPCRs as targets of food components and strongly suggest that curcumin activates GPR55 as an agonist, which is involved in the physiological function of curcumin.
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Curcumin Improved Glucose Intolerance, Renal Injury, and Nonalcoholic Fatty Liver Disease and Decreased Chromium Loss through Urine in Obese Mice. Processes (Basel) 2021. [DOI: 10.3390/pr9071132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Obesity-associated hyperglycemia underlies insulin resistance, glucose intolerance, and related metabolic disorders including type 2 diabetes, renal damage, and nonalcoholic fatty liver disease. Turmeric root is commonly used in Asia, and curcumin, one of its pharmacological components, can play a role in preventing and treating certain chronic physiological disorders. Accordingly, this study examined how high-fat diet (HFD)-induced hyperglycemia and hyperlipidemia are reduced by curcumin through changes in fatty liver scores, chromium distribution, and renal injury in mice. Relative to the control group, also fed an HFD, the curcumin group weighed less and had smaller adipocytes; it also had lower daily food efficiency, blood urea nitrogen and creatinine levels, serum alanine aminotransferase and aspartate aminotransferase levels, serum and hepatic triglyceride levels, and hepatic lipid regulation marker expression. The curcumin-treated obese group exhibited significantly lower fasting blood glucose, was less glucose intolerant, had higher Akt phosphorylation and glucose transporter 4 (GLUT4) expression, and had greater serum insulin levels. Moreover, the group showed renal damage with lower TNF-α expression along with more numerous renal antioxidative enzymes that included superoxide dismutase, glutathione peroxidase, and catalase. The liver histology of the curcumin-treated obese mice showed superior lipid infiltration and fewer FASN and PNPLA3 proteins in comparison with the control mice. Curcumin contributed to creating a positive chromium balance by decreasing the amount of chromium lost through urine, leading to the chromium mobilization needed to mitigate hyperglycemia. Thus, the results suggest that curcumin prevents HFD-induced glucose intolerance, kidney injury, and nonalcoholic fatty liver disease.
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20
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Hira T, Trakooncharoenvit A, Taguchi H, Hara H. Improvement of Glucose Tolerance by Food Factors Having Glucagon-Like Peptide-1 Releasing Activity. Int J Mol Sci 2021; 22:6623. [PMID: 34205659 PMCID: PMC8235588 DOI: 10.3390/ijms22126623] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/17/2021] [Accepted: 06/17/2021] [Indexed: 12/14/2022] Open
Abstract
Glucagon-like peptide-1 (GLP-1) is a gastrointestinal hormone released from enteroendocrine L cells in response to meal ingestion. GLP-1 receptor agonists and GLP-1 enhancers have been clinically employed to treat diabetes owing to their glucose-dependent insulin-releasing activity. The release of GLP-1 is primarily stimulated by macronutrients such as glucose and fatty acids, which are nutritionally indispensable; however, excessive intake of sugar and fat is responsible for the development of obesity and diabetes. Therefore, GLP-1 releasing food factors, such as dietary peptides and non-nutrients, are deemed desirable for improving glucose tolerance. Human and animal studies have revealed that dietary proteins/peptides have a potent effect on stimulating GLP-1 secretion. Studies in enteroendocrine cell models have shown that dietary peptides, amino acids, and phytochemicals, such as quercetin, can directly stimulate GLP-1 secretion. In our animal experiments, these food factors improved glucose metabolism and increased GLP-1 secretion. Furthermore, some dietary peptides not only stimulated GLP-1 secretion but also reduced plasma peptidase activity, which is responsible for GLP-1 inactivation. Herein, we review the relationship between GLP-1 and food factors, especially dietary peptides and flavonoids. Accordingly, utilization of food factors with GLP-1-releasing/enhancing activity is a promising strategy for preventing and treating obesity and diabetes.
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Affiliation(s)
- Tohru Hira
- Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
- Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan;
- School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan;
| | | | - Hayate Taguchi
- School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan;
| | - Hiroshi Hara
- Department of Food Science and Human Nutrition, Fuji Women’s University, Ishikari-shi 061-320, Japan;
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21
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Jabczyk M, Nowak J, Hudzik B, Zubelewicz-Szkodzińska B. Curcumin and Its Potential Impact on Microbiota. Nutrients 2021; 13:2004. [PMID: 34200819 PMCID: PMC8230423 DOI: 10.3390/nu13062004] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/19/2022] Open
Abstract
Curcumin is one of the most frequently researched herbal substances; however, it has been reported to have a poor bioavailability and fast metabolism, which has led to doubts about its effectiveness. Curcumin has antioxidant and anti-inflammatory effects, and has demonstrated favorable health effects. Nevertheless, well-reported in vivo pharmacological activities of curcumin are limited by its poor solubility, bioavailability, and pharmacokinetic profile. The bidirectional interactions between curcumin and gut microbiota play key roles in understanding the ambiguity between the bioavailability and biological activity of curcumin, including its wider health impact.
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Affiliation(s)
- Marzena Jabczyk
- Department of Nutrition-Related Disease Prevention, Faculty of Health Sciences in Bytom, Medical University of Silesia, 41-900 Bytom, Poland; (M.J.); (B.Z.-S.)
| | - Justyna Nowak
- Department of Cardiovascular Disease Prevention, Faculty of Health Sciences in Bytom, Medical University of Silesia, 41-900 Bytom, Poland;
| | - Bartosz Hudzik
- Department of Cardiovascular Disease Prevention, Faculty of Health Sciences in Bytom, Medical University of Silesia, 41-900 Bytom, Poland;
- Silesian Center for Heart Diseases, Third Department of Cardiology, Faculty of Medical Science in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland
| | - Barbara Zubelewicz-Szkodzińska
- Department of Nutrition-Related Disease Prevention, Faculty of Health Sciences in Bytom, Medical University of Silesia, 41-900 Bytom, Poland; (M.J.); (B.Z.-S.)
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Zhang HA, Kitts DD. Turmeric and its bioactive constituents trigger cell signaling mechanisms that protect against diabetes and cardiovascular diseases. Mol Cell Biochem 2021; 476:3785-3814. [PMID: 34106380 PMCID: PMC8187459 DOI: 10.1007/s11010-021-04201-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/27/2021] [Indexed: 01/22/2023]
Abstract
Turmeric, the rhizome of Curcuma longa plant belonging to the ginger family Zingiberaceae, has a history in Ayurvedic and traditional Chinese medicine for treatment of chronic diseases, including metabolic and cardiovascular diseases (CVD). This parallels a prevalence of age- and lifestyle-related diseases, especially CVD and type 2 diabetes (T2D), and associated mortality which has occurred in recent decades. While the chemical composition of turmeric is complex, curcuminoids and essential oils are known as two major groups that display bioactive properties. Curcumin, the most predominant curcuminoid, can modulate several cell signaling pathways involved in the etiology and pathogenesis of CVD, T2D, and related morbidities. Lesser bioactivities have been reported from other curcuminoids and essential oils. This review examines the chemical compositions of turmeric, and related bioactive constituents. A focus was placed on the cellular and molecular mechanisms that underlie the protective effects of turmeric and turmeric-derived compounds against diabetes and CVD, compiled from the findings obtained with cell-based and animal models. Evidence from clinical trials is also presented to identify potential preventative and therapeutic efficacies. Clinical studies with longer intervention durations and specific endpoints for assessing health outcomes are warranted in order to fully evaluate the long-term protective efficacy of turmeric.
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Affiliation(s)
- Huiying Amelie Zhang
- Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, Canada
| | - David D Kitts
- Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, Canada.
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Yang J, Miao X, Yang FJ, Cao JF, Liu X, Fu JL, Su GF. Therapeutic potential of curcumin in diabetic retinopathy (Review). Int J Mol Med 2021; 47:75. [PMID: 33693955 PMCID: PMC7949626 DOI: 10.3892/ijmm.2021.4908] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 02/11/2021] [Indexed: 02/06/2023] Open
Abstract
Diabetic retinopathy (DR) is a type of retinal microangiopathy caused by diabetes mellitus. It has become the leading cause of blindness among working individuals worldwide. DR is becoming increasingly common among younger diabetic patients and there is a need for lifelong treatment. The pathogenic mechanisms of DR are influenced by a number of factors, such as hyperglycemia, hyperlipidemia, inflammatory response and oxidative stress, among others. Currently, the treatment methods for DR mainly include retinal photocoagulation, vitrectomy, or anti‑vascular endothelial growth factor (VEGF) therapy. However, these methods have some disadvantages and limitations. Therefore, it is a matter of great interest and urgency to discover drugs that can target the pathogenesis of DR. Since ancient times, traditional Chinese medicine practitioners have accumulated extensive experiences in the use of Chinese herbal medicine for the prevention and treatment of diseases. In the theory of traditional Chinese medicine, curcumin has the effects of promoting blood circulation and relieving pain. A number of studies have also demonstrated that curcumin has multiple biological activities, including exerting anti‑apoptotic, anti‑inflammatory, antioxidant and antitumor properties. In recent years, studies have also confirmed that curcumin can prevent a variety of diabetic complications, including diabetic nephropathy (DN). However, the preventive and curative effects of curcumin on DR and its mechanisms of action have not yet been fully elucidated. The present review aimed to explore the therapeutic potential of curcumin in diabetes mellitus and DR.
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Affiliation(s)
- Jian Yang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Xiao Miao
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Feng-Juan Yang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Jin-Feng Cao
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Xin Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Jin-Ling Fu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Guan-Fang Su
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
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24
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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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Mohammadi E, Behnam B, Mohammadinejad R, Guest PC, Simental-Mendía LE, Sahebkar A. Antidiabetic Properties of Curcumin: Insights on New Mechanisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1291:151-164. [PMID: 34331689 DOI: 10.1007/978-3-030-56153-6_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Plant extracts have been used to treat a wide range of human diseases. Curcumin, a bioactive polyphenol derived from Curcuma longa L., exhibits therapeutic effects against diabetes while only negligible adverse effects have been observed. Antioxidant and anti-inflammatory properties of curcumin are the main and well-recognized pharmacological effects that might explain its antidiabetic effects. Additionally, curcumin may regulate novel signaling molecules and enzymes involved in the pathophysiology of diabetes, including glucagon-like peptide-1, dipeptidyl peptidase-4, glucose transporters, alpha-glycosidase, alpha-amylase, and peroxisome proliferator-activated receptor gamma (PPARγ). Recent findings from in vitro and in vivo studies on novel signaling pathways involved in the potential beneficial effects of curcumin for the treatment of diabetes are discussed in this review.
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Affiliation(s)
- Elahe Mohammadi
- Student Research Committee, School of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Behzad Behnam
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran. .,Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran. .,Pharmaceutical Sciences and Cosmetic Products Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Reza Mohammadinejad
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Paul C Guest
- Laboratory of Neuroproteomics, Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran. .,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland. .,Halal Research Center of IRI, FDA, Tehran, Iran.
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ALTamimi JZ, AlFaris NA, Al-Farga AM, Alshammari GM, BinMowyna MN, Yahya MA. Curcumin reverses diabetic nephropathy in streptozotocin-induced diabetes in rats by inhibition of PKCβ/p 66Shc axis and activation of FOXO-3a. J Nutr Biochem 2021; 87:108515. [PMID: 33017608 DOI: 10.1016/j.jnutbio.2020.108515] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/01/2020] [Accepted: 09/11/2020] [Indexed: 02/06/2023]
Abstract
This study investigated if the nephroprotective effect of Curcumin in streptozotocin-induced type 1 diabetes mellitus (DM) in rats involves downregulation/inhibition of p66Shc and examined the underlying mechanisms. Rats were divided into 4 groups (n = 12/group) as control, control + Curcumin (100 mg/kg), T1DM, and T1DM + Curcumin. Curcumin was administered orally to control or diabetic rats for 12 weeks daily. As compared to diabetic rats, Curcumin didn't affect either plasma glucose or insulin levels but significantly reduced serum levels of urea, blood urea nitrogen, and creatinine, and concurrently reduced albumin/protein urea and increased creatinine clearance. It also prevented the damage in renal tubules and mitochondria, mesangial cell expansion, the thickness of the basement membrane. Mechanistically, Curcumin reduced mRNA and protein levels of collagen I/III and transforming growth factor- β-1 (TGF-β1), reduced inflammatory cytokines levels, improved markers of mitochondrial function, and suppressed the release of cytochrome-c and the activation of caspase-3. In the kidneys of both control and diabetic rats, Curcumin reduced the levels of reactive oxygen species (ROS), increased mRNA levels of manganese superoxide dismutase (MnSOD) and gamma-glutamyl ligase, increased glutathione (GSH) and protein levels of Bcl-2 and MnSOD, and increased the nuclear levels of nuclear factor2 (Nrf2) and FOXO-3a. Besides, Curcumin reduced the nuclear activity of the nuclear factor-kappa B (NF-κB), downregulated protein kinase CβII (PKCβII), NADPH oxidase, and p66Shc, and decreased the activation of p66Shc. In conclusion, Curcumin prevents kidney damage in diabetic rats by activating Nrf2, inhibiting Nf-κB, suppressing NADPH oxidase, and downregulating/inhibiting PKCβII/p66Shc axis.
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Affiliation(s)
- Jozaa Z ALTamimi
- Nutrition and Food Science, Department of Physical Sport Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Nora A AlFaris
- Nutrition and Food Science, Department of Physical Sport Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
| | - Ammar M Al-Farga
- Biochemistry Department, College of Sciences, University of Jeddah, Jeddah, Saudi Arabia
| | - Ghedeir M Alshammari
- Department of Food Science and Nutrition, College of Food and Agricultural Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Mohammed A Yahya
- Department of Food Science and Nutrition, College of Food and Agricultural Science, King Saud University, Riyadh, Saudi Arabia
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Boosting GLP-1 by Natural Products. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1328:513-522. [DOI: 10.1007/978-3-030-73234-9_36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Heshmati J, Moini A, Sepidarkish M, Morvaridzadeh M, Salehi M, Palmowski A, Mojtahedi MF, Shidfar F. Effects of curcumin supplementation on blood glucose, insulin resistance and androgens in patients with polycystic ovary syndrome: A randomized double-blind placebo-controlled clinical trial. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 80:153395. [PMID: 33137599 DOI: 10.1016/j.phymed.2020.153395] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND Curcumin is a biologically active phytochemical ingredient found in turmeric. It has several pharmacologic effects that might benefit patients with polycystic ovary syndrome (PCOS). OBJECTIVE We hypothesized curcumin to be effective in improving blood sugar levels, insulin resistance and hyperandrogenism in individuals with PCOS. METHODS In a randomized double-blind placebo-controlled trial, individuals with PCOS were treated with curcumin (500 mg three times daily) or placebo for 12 weeks. Primary outcome measures were fasting plasma glucose (FPG), fasting insulin (FI), sex hormone levels, and hirsutism (Ferriman-Gallwey [mFG] score). Secondary outcomes included anthropometric measurements. RESULTS Of 72 randomized individuals, 67 completed the trial. The two groups were comparable at baseline. At the end of the study, FPG and Dehydroepiandrosterone levels had decreased significantly in the intervention group compared to control (difference of change (post-pre) between intervention and placebo groups: -4.11 mg/dL; 95% CI: -8.35, -0.35 mg/dL; p = 0.033 and -26.53 microg/dL; 95% CI: -47.99, -4.34 µg/dL; p = 0.035, respectively). We also observed a statistically non-significant increase (p = 0.082) in Estradiol levels in the intervention group compared to control. No serious adverse events were reported throughout the trial. CONCLUSIONS Curcumin might be a safe and useful supplement to ameliorate PCOS-associated hyperandrogenemia and hyperglycemia. However, longer trials investigating different dosages in longer durations are needed to underpin these findings.
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Affiliation(s)
- Javad Heshmati
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ashraf Moini
- Breast Disease Research Center(BDRC), Tehran University Of Medical Sciences, Tehran, Iran; Department of Obstetrics and Gynecology, Endocrinology and Female Infertility Unit, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran; Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Mahdi Sepidarkish
- Department of Biostatistics and Epidemiology, School of Public Health, Babol University of Medical Sciences, Babol, Iran
| | - Mojgan Morvaridzadeh
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Masoud Salehi
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Andriko Palmowski
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Maryam Farid Mojtahedi
- Department of Obstetrics and Gynecology, Endocrinology and Female Infertility Unit, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Farzad Shidfar
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
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Effect of omega-3 fatty acids on glucose homeostasis: role of free fatty acid receptor 1. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1797-1808. [PMID: 32388601 DOI: 10.1007/s00210-020-01883-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/22/2020] [Indexed: 12/12/2022]
Abstract
Insulin resistance is a worldwide health problem. This study investigated the acute effects of eicosapentanoic acid (EPA) on glucose homeostasis focusing on the role of free fatty acid receptor 1 (FFAR1) and the chronic effects of fish oil omega-3 fatty acids on insulin resistance. Insulin resistance was induced by feeding mice high-fructose, high-fat diet (HFrHFD) for 16 weeks. In the first part, the acute effects of EPA alone and in combination with GW1100 and DC260126 (FFAR1 blockers) on glucose homeostasis and hepatic phosphatidyl-inositol 4,5-bisphosphate (PIP2) and diacylglycerol (DAG) were investigated in standard chow diet (SCD)- and HFrHFD-fed mice. In the second part, mice were treated with fish oil omega-3 fatty acids for 4 weeks starting at the week 13 of feeding HFrHFD. Changes in the blood- and liver tissue-insulin resistance markers and FFAR1 downstream signals were recorded at the end of experiment. Results showed that EPA increased 0 and 30 min blood glucose levels after glucose load in SCD-fed mice but improved glucose tolerance in HFrHFD-fed mice. Moreover, FFAR1 blockers reduced EPA effects on glucose tolerance and hepatic PIP2 and DAG levels. On the other hand, chronic use of fish oil omega-3 fatty acids increased FBG levels and decreased serum insulin and triglycerides levels without improving the index of insulin resistance. Also, they increased hepatic β-arrestin-2, PIP2, and pS473 Akt levels but decreased DAG levels. In conclusion, EPA acutely improved glucose homeostasis in HFrHFD-fed mice by modulating the activity of FFAR1. However, the chronic use of fish oil omega-3 fatty acids did not improve the insulin resistance.
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30
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Scazzocchio B, Minghetti L, D’Archivio M. Interaction between Gut Microbiota and Curcumin: A New Key of Understanding for the Health Effects of Curcumin. Nutrients 2020; 12:nu12092499. [PMID: 32824993 PMCID: PMC7551052 DOI: 10.3390/nu12092499] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/10/2020] [Accepted: 08/17/2020] [Indexed: 12/20/2022] Open
Abstract
Curcumin, a lipophilic polyphenol contained in the rhizome of Curcuma longa (turmeric), has been used for centuries in traditional Asian medicine, and nowadays it is widely used in food as dietary spice worldwide. It has received considerable attention for its pharmacological activities, which appear to act primarily through anti-inflammatory and antioxidant mechanisms. For this reason, it has been proposed as a tool for the management of many diseases, among which are gastrointestinal and neurological diseases, diabetes, and several types of cancer. However, the pharmacology of curcumin remains to be elucidated; indeed, a discrepancy exists between the well-documented in vitro and in vivo activities of curcumin and its poor bioavailability and chemical instability that should limit any therapeutic effect. Recently, it has been hypothesized that curcumin could exert direct regulative effects primarily in the gastrointestinal tract, where high concentrations of this polyphenol have been detected after oral administration. Consequently, it might be hypothesized that curcumin directly exerts its regulatory effects on the gut microbiota, thus explaining the paradox between its low systemic bioavailability and its wide pharmacological activities. It is well known that the microbiota has several important roles in human physiology, and its composition can be influenced by a multitude of environmental and lifestyle factors. Accordingly, any perturbations in gut microbiome profile or dysbiosis can have a key role in human disease progression. Interestingly, curcumin and its metabolites have been shown to influence the microbiota. It is worth noting that from the interaction between curcumin and microbiota two different phenomena arise: the regulation of intestinal microflora by curcumin and the biotransformation of curcumin by gut microbiota, both of them potentially crucial for curcumin activity. This review summarizes the most recent studies on this topic, highlighting the strong connection between curcumin and gut microbiota, with the final aim of adding new insight into the potential mechanisms by which curcumin exerts its effects.
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Affiliation(s)
- Beatrice Scazzocchio
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Luisa Minghetti
- Research Coordination and Support Service, Istituto Superiore di Sanità, 00161 Rome, Italy;
| | - Massimo D’Archivio
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy;
- Correspondence:
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Nakagawa Y, Mukai S, Yamada S, Murata S, Yabumoto H, Maeda T, Akamatsu S. The Efficacy and Safety of Highly-Bioavailable Curcumin for Treating Knee Osteoarthritis: A 6-Month Open-Labeled Prospective Study. CLINICAL MEDICINE INSIGHTS-ARTHRITIS AND MUSCULOSKELETAL DISORDERS 2020; 13:1179544120948471. [PMID: 32848491 PMCID: PMC7425263 DOI: 10.1177/1179544120948471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 11/16/2022]
Abstract
Background We previously developed a surface-controlled water-dispersible form of curcumin that we called Theracurmin®. The area under the blood concentration-time curve (AUC) of Theracurmin in humans was 27-fold higher than that of curcumin powder. Previously, we reported on the anti-inflammatory effects of Theracurmin for knee osteoarthritis. Hypothesis/Purpose We determined the clinical effects of orally administered Theracurmin in patients with knee osteoarthritis over a 6-month period. Study Design Open prospective study. Methods Fifty patients Kellgren-Lawrence grade II, III, or IV knee osteoarthritis who were above 40 years old were enrolled in this clinical study. Theracurmin containing 180 mg/day of curcumin was administered orally every day for 6 months. To monitor for adverse events, blood biochemistry analyses were performed before and after 6 months of each intervention. The patients' knee symptoms were evaluated at 0, 1, 2, 3, 4, 5, and 6 months based on the Japanese Knee Osteoarthritis Measure, the knee pain visual analog scale, and the knee scoring system of the Japanese Orthopedic Association. Results Five cases dropped out during the study, but no cases dropped out because of major problems. No major side effects were observed with Theracurmin treatment, including the blood biochemistry analysis results. The effective group included 34 cases (75.6%), while the not-effective group included 11 cases. Conclusion This study demonstrates the safety and good efficacy of Theracurmin for various types of knee osteoarthritis. Theracurmin shows great potential for the treatment of human knee osteoarthritis.
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Affiliation(s)
- Yasuaki Nakagawa
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
| | - Shogo Mukai
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
| | - Shigeru Yamada
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
| | - Satoru Murata
- Department of Orthopedic Surgery, Goshohigashi Clinic, Kyoto, Japan
| | - Hiromitsu Yabumoto
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
| | - Takahiro Maeda
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
| | - Shota Akamatsu
- Department of Orthopedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Japan
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Xie SZ, Yang G, Jiang XM, Qin DY, Li QM, Zha XQ, Pan LH, Jin CS, Luo JP. Polygonatum cyrtonema Hua Polysaccharide Promotes GLP-1 Secretion from Enteroendocrine L-Cells through Sweet Taste Receptor-Mediated cAMP Signaling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6864-6872. [PMID: 32456438 DOI: 10.1021/acs.jafc.0c02058] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Glucagon-like peptide-1 (GLP-1) secreted from enteroendocrine L-cells is a pleiotropic hormone with beneficial potential related to islet function, diet control, glucose homeostasis, inflammation relief, and cardiovascular protection. The present study aimed at investigating the effect of Polygonatum cyrtonema polysaccharide (PCP) after structural identification on GLP-1 secretion and the possible mechanism involved in the PCP-stimulated secretion of GLP-1. It was found that GLP-1 secretion was effectively promoted (p < 0.01) by PCP both in rats with oral administration for 5 weeks (13.9 ± 0.3-35.8 ± 0.3 pmol/L) and ileal administration within 2 h (13.6 ± 0.4-34.1 ± 1.1 pmol/L) and in enteroendocrine NCI-H716 cells with direct stimulation within 24 h (2.05 ± 0.3-20.7 ± 0.2 pmol/L). The sweet taste receptor T1R2/T1R3 was identified to be essential for NCI-H716 cells to directly recognize PCP. The intervention experiments showed that PCP-stimulated GLP-1 secretion was significantly depressed (p < 0.01) not only by antibodies, siRNA, and the inhibitor of T1R2/T1R3 but also by an adenylate cyclase inhibitor. These results suggest that PCP stimulates GLP-1 secretion from enteroendocrine cells possibly through activation of the T1R2/T1R3-mediated cAMP signaling pathway.
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Affiliation(s)
- Song-Zi Xie
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Guang Yang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xian-Min Jiang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Dan-Yang Qin
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Qiang-Ming Li
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xue-Qiang Zha
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Li-Hua Pan
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Chuan-Shan Jin
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui 230012, China
| | - Jian-Ping Luo
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
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Curcumin derivatives for Type 2 Diabetes management and prevention of complications. Arch Pharm Res 2020; 43:567-581. [PMID: 32557163 DOI: 10.1007/s12272-020-01240-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/09/2020] [Indexed: 02/08/2023]
Abstract
Type 2 diabetes Mellitus (T2DM) is characterized by chronically increased blood glucose levels, which is associated with impairment of the inflammatory and oxidative state and dyslipidaemia. Although it is considered a world heath concern and one of the most studied diseases, we are still pursuing an effective therapy for both the pathophysiological mechanisms and the complications. Curcumin, a natural compound found in the rhizome of Curcuma longa, is well known for its numerous biological activities, as demonstrated by several studies supporting that curcumin possesses hypoglycaemic, hypolipidemic, anti-inflammatory and antioxidant properties, among others. These effects have been explored to the attenuation of hyperglycaemia and progression of DM complications, being appointed as a potential therapeutic approach. Besides its strong intrinsic activity, the polyphenol has low bioavailability, compromising its therapeutic efficacy. In order to overcome this limitation, several chemical strategies have been applied to curcumin, such as drug delivery systems, chemical manipulation and the use of adjuvant therapies. Given the promising results obtained with curcumin derivative, in this review we discuss not only the therapeutic targets of curcumin, but also its most recently developed analogues and their efficacy in the management of T2DM pathophysiology and complications.
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Furman BL, Candasamy M, Bhattamisra SK, Veettil SK. Reduction of blood glucose by plant extracts and their use in the treatment of diabetes mellitus; discrepancies in effectiveness between animal and human studies. JOURNAL OF ETHNOPHARMACOLOGY 2020; 247:112264. [PMID: 31600561 DOI: 10.1016/j.jep.2019.112264] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/03/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The global problem of diabetes, together with the limited access of large numbers of patients to conventional antidiabetic medicines, continues to drive the search for new agents. Ancient Asian systems such as traditional Chinese medicine, Japanese Kampo medicine, and Indian Ayurvedic medicine, as well as African traditional medicine and many others have identified numerous plants reported anecdotally to treat diabetes; there are probably more than 800 such plants for which there is scientific evidence for their activity, mostly from studies using various models of diabetes in experimental animals. AIM OF THE REVIEW Rather than a comprehensive coverage of the literature, this article aims to identify discrepancies between findings in animal and human studies, and to highlight some of the problems in developing plant extract-based medicines that lower blood glucose in patients with diabetes, as well as to suggest potential ways forward. METHODS In addition to searching the 2018 PubMed literature using the terms 'extract AND blood glucose, a search of the whole literature was conducted using the terms 'plant extracts' AND 'blood glucose' AND 'diabetes' AND 'double blind' with 'clinical trials' as a filter. A third search using PubMed and Medline was undertaken for systematic reviews and meta-analyses investigating the effects of plant extracts on blood glucose/glycosylated haemoglobin in patients with relevant metabolic pathologies. FINDINGS Despite numerous animal studies demonstrating the effects of plant extracts on blood glucose, few randomised, double-blind, placebo-controlled trials have been conducted to confirm efficacy in treating humans with diabetes; there have been only a small number of systematic reviews with meta-analyses of clinical studies. Qualitative and quantitative discrepancies between animal and human clinical studies in some cases were marked; the factors contributing to this included variations in the products among different studies, the doses used, differences between animal models and the human disease, and the impact of concomitant therapy in patients, as well as differences in the duration of treatment, and the fact that treatment in animals may begin before or very soon after the induction of diabetes. CONCLUSION The potential afforded by natural products has not yet been realised in the context of treating diabetes mellitus. A systematic, coordinated, international effort is required to achieve the goal of providing anti-diabetic treatments derived from medicinal plants.
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Affiliation(s)
- Brian L Furman
- Strathclyde Institute of Pharmacy & Biomedical Sciences, 161, Cathedral Street Glasgow, G4 ORE, Scotland, UK.
| | - Mayuren Candasamy
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
| | - Subrat Kumar Bhattamisra
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
| | - Sajesh K Veettil
- School of Pharmacy, International Medical University, Jalan Jalil Perkasa 19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
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Xia ZH, Chen WB, Shi L, Jiang X, Li K, Wang YX, Liu YQ. The Underlying Mechanisms of Curcumin Inhibition of Hyperglycemia and Hyperlipidemia in Rats Fed a High-Fat Diet Combined With STZ Treatment. Molecules 2020; 25:molecules25020271. [PMID: 31936547 PMCID: PMC7024244 DOI: 10.3390/molecules25020271] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/03/2020] [Accepted: 01/07/2020] [Indexed: 12/17/2022] Open
Abstract
Curcumin is the main secondary metabolite of Curcuma longa and other Curcuma spp, and has been reported to have some potential in preventing and treating some physiological disorders. This study investigated the effect of curcumin in inhibiting high-fat diet and streptozotocin (STZ)-induced hyperglycemia and hyperlipidemia in rats. Twenty-six male Sprague-Dawley (SD) rats (170–190 g) were randomly divided into a standard food pellet diet group (Control group), a high-fat diet and streptozotocin group (HF + STZ group), and a high-fat diet combined with curcumin and STZ group (HF + Cur + STZ group). Compared with the HF + STZ group, the HF + Cur + STZ group exhibited significantly reduced fasting blood glucose (FBG), total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), alanine aminotransferase (AST), and aspartate transaminase (ALT) levels, as well as liver coefficients. In the livers of these rats, the expression of malondialdehyde (MDA) and Bax was downregulated, whereas that of superoxide dismutase (SOD) and Bcl-2 was upregulated. Moreover, the liver histology of these rats was improved and resembled that of the control rats. These results suggest that curcumin prevents high-fat diet and STZ-induced hyperglycemia and hyperlipidemia, mainly via anti-oxidant and anti-apoptotic mechanisms in the liver.
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Affiliation(s)
| | | | | | | | | | | | - Yan-Qiang Liu
- Correspondence: or ; Tel.: +86-22-23508378; Fax: +86-22-23508378
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Derosa G, D’Angelo A, Vanelli A, Maffioli P. An Evaluation of a Nutraceutical with Berberine, Curcumin, Inositol, Banaba and Chromium Picolinate in Patients with Fasting Dysglycemia. Diabetes Metab Syndr Obes 2020; 13:653-661. [PMID: 32184644 PMCID: PMC7060772 DOI: 10.2147/dmso.s232791] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 01/10/2020] [Indexed: 01/08/2023] Open
Abstract
AIM To evaluate if a nutraceutical containing Berberine, Curcumin, Inositol, Banaba, and Chromium Picolinate (Reglicem®), can ameliorate glycemic status in patients with dysglycemia. METHODS We enrolled 148 patients with impaired fasting plasma glucose or impaired glucose tolerance, not taking any hypoglycemic compounds. Patients were randomized to take nutraceutical or placebo for 3 months, in a randomized, double-blind, placebo-controlled design. Both nutraceutical and placebo were self-administered once a day, 1 tablet during the breakfast. RESULTS A reduction of fasting and post-prandial plasma glucose was observed with the nutraceutical combination (p < 0.05 vs baseline and p < 0.05 vs placebo, respectively). Furthermore, a decrease of glycated hemoglobin, and fasting plasma insulin was observed with the nutraceutical combination (p < 0.05 vs baseline and p < 0.05 vs placebo, respectively). Then, there was a reduction of homeostasis model assessment index with the nutraceutical combination (p < 0.05 vs baseline and p < 0.05 vs placebo). M value was higher (p < 0.05 vs baseline and p < 0.05 vs placebo) in the nutraceutical combination group at the end of the treatment. We observed a reduction of total cholesterol (TC) (p < 0.05 vs baseline) and triglycerides (Tg) (p < 0.05 vs baseline and p < 0.05 vs placebo) with the nutraceutical combination, respectively. Finally, high sensitivity C-reactive protein was reduced after 3 months with nutraceutical combination therapy (p < 0.05 vs baseline and p < 0.05 vs placebo, respectively). CONCLUSION A nutraceutical containing Berberine, Curcumin, Inositol, Banaba, and Chromium Picolinate can be helpful in improving glyco-metabolic compensation, TC and Tg value, and in reducing inflammatory status in patients with dysglycemia.
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Affiliation(s)
- Giuseppe Derosa
- Center of Diabetes and Metabolic Diseases, Department of Internal Medicine and Therapeutics, University of Pavia and Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Laboratory of Molecular Medicine, University of Pavia, Pavia, Italy
- Center for Prevention, Surveillance, Diagnosis and Treatment of Rare Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Correspondence: Giuseppe Derosa Department of Internal Medicine and Therapeutics, University of Pavia, and Fondazione IRCCS Policlinico San Matteo, P.le C. Golgi, 2, Pavia27100, ItalyTel +39-0382 526217Fax +39-0382 526259 Email
| | - Angela D’Angelo
- Center of Diabetes and Metabolic Diseases, Department of Internal Medicine and Therapeutics, University of Pavia and Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Laboratory of Molecular Medicine, University of Pavia, Pavia, Italy
| | | | - Pamela Maffioli
- Center of Diabetes and Metabolic Diseases, Department of Internal Medicine and Therapeutics, University of Pavia and Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Center for Prevention, Surveillance, Diagnosis and Treatment of Rare Diseases, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Menneson S, Ménicot S, Malbert CH, Meurice P, Serrand Y, Noirot V, Etienne P, Coquery N, Val-Laillet D. Neuromodulatory and possible anxiolytic-like effects of a spice functional food ingredient in a pig model of psychosocial chronic stress. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Marliyana SD, Wibowo FR, Wartono MW, Munasah G. Evaluation of antibacterial activity of sesquiterpene Ar- Turmerone from Curcuma soloensis Val. rhizomes. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/578/1/012060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Saraf-Bank S, Ahmadi A, Paknahad Z, Maracy M, Nourian M. Effects of curcumin on cardiovascular risk factors in obese and overweight adolescent girls: a randomized clinical trial. SAO PAULO MED J 2019; 137:414-422. [PMID: 31691723 PMCID: PMC9745817 DOI: 10.1590/1516-3180.2018.0454120419] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 04/12/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Obese adolescents are at higher risk of development of cardiovascular risk factors and obesity in later life. Dietary intake of antioxidants, particularly curcumin, as an active ingredient of turmeric extract, may have noticeable effects on obesity and its important complications such as cardiovascular risk factors. Therefore, the aim of this study was to assess the effects of curcumin supplementation on cardiovascular risk factors among overweight and obese female adolescents. DESIGN AND SETTING Randomized placebo-controlled clinical trial; Pediatric Cardiovascular Research Center, Isfahan, Iran. METHODS 60 adolescent girls (aged 13-18 years) were randomly assigned to receive either placebo or intervention. The adolescents were asked to consume one 500 mg tablet per day, containing either standardized 95% turmeric extract or placebo, and to undergo a weight maintenance or a mild weight loss diet for 10 weeks. Anthropometric and biochemical indices were assessed at the baseline and the end of the intervention. RESULTS Curcumin supplementation had beneficial effects on body mass index (P = 0.019), waist circumference (P = 0.008), hip circumference (P = 0.030), high-density lipoprotein levels (P = 0.042) and triglyceride/high-density lipoprotein ratio (P = 0.021). However, in univariate analysis of covariance, no significant differences were found between the intervention and placebo groups after 10 weeks of supplementation (P > 0.05). CONCLUSIONS Prescription of curcumin supplementation along with use of a slight weight loss diet might have beneficial effects on some cardiovascular risk factors among overweight and obese female adolescents. Larger clinical trials with higher curcumin doses and longer duration are needed to confirm the results from the current study. CLINICAL TRIAL REGISTRATION IRCT20171107037302N1.
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Affiliation(s)
- Sahar Saraf-Bank
- MSc. Doctoral Student and Dietitian, Students’ Research Committee, Isfahan University of Medical Sciences; Doctoral Student and Dietitian, Food Security Research Center, Isfahan University of Medical Sciences; and Doctoral Student and Dietitian, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Alireza Ahmadi
- MD. Associate Professor and Cardiologist, Pediatric Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Zamzam Paknahad
- PhD. Full Professor and Dietitian, Food Security Research Center, Isfahan University of Medical Sciences, and Full Professor and Dietitian, Department of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mohammadreza Maracy
- PhD. Full Professor and Statistician, Department of Epidemiology and Biostatistics, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mojgan Nourian
- PhD. Assistant Professor and Dietitian, Food Security Research Center, Isfahan University of Medical Sciences, and Assistant Professor and Dietitian, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
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Alli-Oluwafuyi AM, Luis PB, Nakashima F, Giménez-Bastida JA, Presley SH, Duvernay MT, Iwalewa EO, Schneider C. Curcumin induces secretion of glucagon-like peptide-1 through an oxidation-dependent mechanism. Biochimie 2019; 165:250-257. [PMID: 31470039 DOI: 10.1016/j.biochi.2019.08.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 08/24/2019] [Indexed: 10/26/2022]
Abstract
Curcumin shows antiglycemic effects in animals. Curcumin is chemically unstable at physiological pH, and its oxidative degradation products were shown to contribute to its anti-inflammatory effects. Since the degradation products may also contribute to other effects, we analyzed their role in the antiglycemic activity of curcumin. We quantified curcumin-induced release of glucagon-like peptide 1 (GLP-1) from mouse STC-1 cells that represent enteroendocrine L-cells as a major source of this anti-diabetic hormone. Curcumin induced secretion of GLP-1 in a dose-dependent manner. Two chemically stable analogues of curcumin that do not readily undergo degradation, were less active while two unstable analogues were active secretagogues. Chromatographically isolated spiroepoxide, an unstable oxidative metabolite of curcumin with anti-inflammatory activity, also induced secretion of GLP-1. Stable compounds like the final oxidative metabolite bicyclopentadione, and the major plasma metabolite, curcumin-glucuronide, were inactive. GLP-1 secretion induced by curcumin and its oxidative degradation products was associated with activation of PKC, ERK, and CaM kinase II. Since activity largely correlated with instability of curcumin and the analogues, we tested the extent of covalent binding to proteins in STC-1 cells and found it occurred with similar affinity as N-ethylmaleimide, indicating covalent binding occurred with nucleophilic cysteine residues. These results suggest that oxidative metabolites of curcumin are involved in the antiglycemic effects of curcumin. Our findings support the hypothesis that curcumin functions as a pro-drug requiring oxidative activation to reveal its bioactive metabolites that act by binding to target proteins thereby causing a change in function.
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Affiliation(s)
- Abdul-Musawwir Alli-Oluwafuyi
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA; Department of Pharmacology and Therapeutics, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
| | - Paula B Luis
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
| | - Fumie Nakashima
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
| | - Juan A Giménez-Bastida
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
| | - Sai Han Presley
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
| | - Matthew T Duvernay
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
| | - Ezekiel O Iwalewa
- Department of Pharmacology and Therapeutics, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Claus Schneider
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA.
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Shakeri A, Zirak MR, Wallace Hayes A, Reiter R, Karimi G. Curcumin and its analogues protect from endoplasmic reticulum stress: Mechanisms and pathways. Pharmacol Res 2019; 146:104335. [DOI: 10.1016/j.phrs.2019.104335] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 02/07/2023]
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Minafra L, Porcino N, Bravatà V, Gaglio D, Bonanomi M, Amore E, Cammarata FP, Russo G, Militello C, Savoca G, Baglio M, Abbate B, Iacoviello G, Evangelista G, Gilardi MC, Bondì ML, Forte GI. Radiosensitizing effect of curcumin-loaded lipid nanoparticles in breast cancer cells. Sci Rep 2019; 9:11134. [PMID: 31366901 PMCID: PMC6668411 DOI: 10.1038/s41598-019-47553-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 07/10/2019] [Indexed: 12/12/2022] Open
Abstract
In breast cancer (BC) care, radiotherapy is considered an efficient treatment, prescribed both for controlling localized tumors or as a therapeutic option in case of inoperable, incompletely resected or recurrent tumors. However, approximately 90% of BC-related deaths are due to the metastatic tumor progression. Then, it is strongly desirable to improve tumor radiosensitivity using molecules with synergistic action. The main aim of this study is to develop curcumin-loaded solid nanoparticles (Cur-SLN) in order to increase curcumin bioavailability and to evaluate their radiosensitizing ability in comparison to free curcumin (free-Cur), by using an in vitro approach on BC cell lines. In addition, transcriptomic and metabolomic profiles, induced by Cur-SLN treatments, highlighted networks involved in this radiosensitization ability. The non tumorigenic MCF10A and the tumorigenic MCF7 and MDA-MB-231 BC cell lines were used. Curcumin-loaded solid nanoparticles were prepared using ethanolic precipitation and the loading capacity was evaluated by UV spectrophotometer analysis. Cell survival after treatments was evaluated by clonogenic assay. Dose–response curves were generated testing three concentrations of free-Cur and Cur-SLN in combination with increasing doses of IR (2–9 Gy). IC50 value and Dose Modifying Factor (DMF) was measured to quantify the sensitivity to curcumin and to combined treatments. A multi-“omic” approach was used to explain the Cur-SLN radiosensitizer effect by microarray and metobolomic analysis. We have shown the efficacy of the Cur-SLN formulation as radiosensitizer on three BC cell lines. The DMFs values, calculated at the isoeffect of SF = 50%, showed that the Luminal A MCF7 resulted sensitive to the combined treatments using increasing concentration of vehicled curcumin Cur-SLN (DMF: 1,78 with 10 µM Cur-SLN.) Instead, triple negative MDA-MB-231 cells were more sensitive to free-Cur, although these cells also receive a radiosensitization effect by combination with Cur-SLN (DMF: 1.38 with 10 µM Cur-SLN). The Cur-SLN radiosensitizing function, evaluated by transcriptomic and metabolomic approach, revealed anti-oxidant and anti-tumor effects. Curcumin loaded- SLN can be suggested in future preclinical and clinical studies to test its concomitant use during radiotherapy treatments with the double implications of being a radiosensitizing molecule against cancer cells, with a protective role against IR side effects.
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Affiliation(s)
- Luigi Minafra
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Nunziatina Porcino
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Valentina Bravatà
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy.
| | - Daniela Gaglio
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milano, Italy
| | - Marcella Bonanomi
- SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milano, Italy
| | - Erika Amore
- Istituto per lo Studio dei Materiali Nanostrutturati-Consiglio Nazionale delle Ricerche (ISMN-CNR), Palermo, Italy
| | - Francesco Paolo Cammarata
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Giorgio Russo
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Carmelo Militello
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Gaetano Savoca
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Margherita Baglio
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
| | - Boris Abbate
- Medical Physics Department, ARNAS-Civico Hospital, Palermo, Italy
| | | | | | - Maria Carla Gilardi
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy.,Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Maria Luisa Bondì
- Istituto per lo Studio dei Materiali Nanostrutturati-Consiglio Nazionale delle Ricerche (ISMN-CNR), Palermo, Italy
| | - Giusi Irma Forte
- Istituto di Bioimmagini e Fisiologia Molecolare-Consiglio Nazionale delle Ricerche (IBFM-CNR), Cefalù, (PA), Italy
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Effects of Sting Plant Extracts as Penetration Enhancers on Transdermal Delivery of Hypoglycemic Compounds. ACTA ACUST UNITED AC 2019; 55:medicina55050121. [PMID: 31067805 PMCID: PMC6572286 DOI: 10.3390/medicina55050121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/17/2019] [Accepted: 04/17/2019] [Indexed: 11/17/2022]
Abstract
Background and objectives: The percutaneous route is an interesting and inventive investigation field of drug delivery. However, it is challenging for drug molecules to pass through the skins surface, which is a characterized by its permeability barrier. The purpose of this study is to look at the effect of some penetration enhancers on in vivo permeation of insulin and insulin sensitizers (curcumin and rutin) through diabetes-induced mouse skin. Materials and Methods: Sting crude extracts of Dendrocnide meyeniana, Urtica thunbergiana Sieb. and Zucc, and Alocasia odora (Lodd.) Spach were used as the penetration enhancers. Mouse skin irritation was tested by smearing the enhancers for the measurements at different time points and the cell viability of the HaCaT human skin keratinocytes, which was determined by Trypan blue exclusion and MTT assays to evaluate human biosafety for these extracts after the mouse skin permeation experiments. Results: All enhancers induced a slight erythema without edema on the mouse skin that completely recovered after 6 h from the enhancer smears as compared with normal mouse skin. Furthermore, no damaged cells were found in the HaCaT keratinocytes under sting crude extract treatments. The blood sugar level in the diabetic mice treated with the insulin or insulin sensitizers, decreased significantly (p < 0.05) in the presence of enhancers. The area under the curve (AUC) values of transdermal drug delivery (TDD) ranged from 42,000 ± 5000 mg/dL x min without enhancers, to 30,000 ± 2000 mg/dL x min in the presence of enhancers. Conclusions: This study exhibited that natural plant extracts could be preferred over the chemically synthesized molecules and are safe and potent penetration enhancers for stimulating the transdermal absorption of drugs.
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Difficulties in Translating Appetite Sensations Effect of Turmeric-Based Beverage When Given Prior to Isoenergetic Medium- or High-Fat Meals in Healthy Subjects. Nutrients 2019; 11:nu11040736. [PMID: 30934903 PMCID: PMC6520817 DOI: 10.3390/nu11040736] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 03/21/2019] [Accepted: 03/25/2019] [Indexed: 12/28/2022] Open
Abstract
The established effect of turmeric and its curcuminoids on appetite sensations was previously shown to be mediated by gut hormones release. In in vitro and preclinical studies, curcumin was shown to induce GLP-1 secretion and improve postprandial glycemia. In humans, consumption of 220 mL turmeric-based beverage (TUR, containing 185 mg gallic acid equivalents (GAE)) prior to white wheat bread (WWB, 50 g available carbohydrate) reduced early postprandial glucose levels and induced peptide tyrosine–tyrosine (PYY) release, as well as lowered ‘desire to eat’ and ‘prospective consumption’ in a postprandial setting, compared to control. In the present study, 12 healthy participants (5 men, 7 women) were admitted. An identical beverage was given and consumed prior to isoenergetic (423 kcal) medium-fat (MF) or high-fat (HF) meals. Appetite sensations including perceived ‘hunger’, ‘desire to eat’, ‘satiety’, ‘fullness’, ‘prospective consumption’, and ‘thirst’ were measured using visual analogue scales. MF induced 18% (p = 0.039) higher ‘satiety’ compared to HF. TUR consumption prior to either MF or HF did not modulate the perceived appetite sensations. Whether macronutrient-induced appetite sensations override the actual turmeric effects warrants further investigation.
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Patel SS, Acharya A, Ray RS, Agrawal R, Raghuwanshi R, Jain P. Cellular and molecular mechanisms of curcumin in prevention and treatment of disease. Crit Rev Food Sci Nutr 2019; 60:887-939. [PMID: 30632782 DOI: 10.1080/10408398.2018.1552244] [Citation(s) in RCA: 211] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Curcumin is a naturally occurring polyphenolic compound present in rhizome of Curcuma longa belonging to the family zingiberaceae. Growing experimental evidence revealed that curcumin exhibit multitarget biological implications signifying its crucial role in health and disease. The current review highlights the recent progress and mechanisms underlying the wide range of pharmacological effects of curcumin against numerous diseases like neuronal, cardiovascular, metabolic, kidney, endocrine, skin, respiratory, infectious, gastrointestinal diseases and cancer. The ability of curcumin to modulate the functions of multiple signal transductions are linked with attenuation of acute and chronic diseases. Numerous preclinical and clinical studies have revealed that curcumin modulates several molecules in cell signal transduction pathway including PI3K, Akt, mTOR, ERK5, AP-1, TGF-β, Wnt, β-catenin, Shh, PAK1, Rac1, STAT3, PPARγ, EBPα, NLRP3 inflammasome, p38MAPK, Nrf2, Notch-1, AMPK, TLR-4 and MyD-88. Curcumin has a potential to prevent and/or manage various diseases due to its anti-inflammatory, anti-oxidant and anti-apoptotic properties with an excellent safety profile. In contrast, the anti-cancer effects of curcumin are reflected due to induction of growth arrest and apoptosis in various premalignant and malignant cells. This review also carefully emphasized the pharmacokinetics of curcumin and its interaction with other drugs. Clinical studies have shown that curcumin is safe at the doses of 12 g/day but exhibits poor systemic bioavailability. The use of adjuvant like piperine, liposomal curcumin, curcumin nanoparticles and curcumin phospholipid complex has shown enhanced bioavailability and therapeutic potential. Further studies are warranted to prove the potential of curcumin against various ailments.
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Affiliation(s)
- Sita Sharan Patel
- Department of Pharmacy, Sagar Institute of Research and Technology, Bhopal, India
| | - Ashish Acharya
- Department of Pharmacy, Sagar Institute of Research and Technology, Bhopal, India
| | - R S Ray
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Ritesh Agrawal
- Department of Pharmacy, Sagar Institute of Research and Technology, Bhopal, India
| | - Ramsaneh Raghuwanshi
- Department of Pharmacy, Sagar Institute of Research and Technology, Bhopal, India
| | - Priyal Jain
- Department of Pharmacy, Sagar Institute of Research and Technology, Bhopal, India
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Iizuka Y, Ozeki A, Tani T, Tsuda T. Blackcurrant Extract Ameliorates Hyperglycemia in Type 2 Diabetic Mice in Association with Increased Basal Secretion of Glucagon-Like Peptide-1 and Activation of AMP-Activated Protein Kinase. J Nutr Sci Vitaminol (Tokyo) 2019; 64:258-264. [PMID: 30175788 DOI: 10.3177/jnsv.64.258] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Blackcurrants are berries that contain high levels of anthocyanins, particularly delphinidin 3-rutinoside (D3R). Several studies have reported that the consumption of blackcurrant extract (BCE) lowers blood glucose levels and ameliorates glucose tolerance, but the mechanism underlying this effect remains unclear. Glucagon-like peptide-1 (GLP-1) and AMP-activated protein kinase (AMPK) are considered one of the most significant molecular targets for the prevention and treatment of type 2 diabetes. In this study, we showed that dietary BCE significantly reduced blood glucose concentration and improved glucose tolerance in type 2 diabetic mice (KK-Ay). The basal GLP-1 concentration in plasma was significantly increased in the BCE group accompanied by upregulation of prohormone convertase 1/3 (PC1/3), the enzyme that processes intestinal proglucagon. Moreover, the level of phospho-AMPKα protein in skeletal muscle was significantly increased in the BCE group, and this was increase accompanied by significant upregulation of glucose transporter 4 (Glut4) proteins in the plasma membrane of BCE group. In conclusion, dietary BCE significantly reduced blood glucose concentration and improved glucose tolerance in association with increased basal GLP-1 concentration in plasma, upregulation of PC1/3 expression, and translocation of Glut4 to the plasma membrane of skeletal muscle in type 2 diabetic mice; furthermore, these effects were accompanied by activation of AMPK. Our findings demonstrated that D3R-rich BCE may help prevent diabetes and allow the dosages of diabetes drugs to be reduced.
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Affiliation(s)
- Yuzuru Iizuka
- College of Bioscience and Biotechnology, Chubu University
| | - Aoi Ozeki
- College of Bioscience and Biotechnology, Chubu University
| | - Tsubasa Tani
- College of Bioscience and Biotechnology, Chubu University
| | - Takanori Tsuda
- College of Bioscience and Biotechnology, Chubu University
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Utility of curcumin for the treatment of diabetes mellitus: Evidence from preclinical and clinical studies. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2018. [DOI: 10.1016/j.jnim.2018.05.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Curcumin alleviates postprandial glycaemic response in healthy subjects: A cross-over, randomized controlled study. Sci Rep 2018; 8:13679. [PMID: 30209353 PMCID: PMC6135827 DOI: 10.1038/s41598-018-32032-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/31/2018] [Indexed: 12/16/2022] Open
Abstract
In the current study, we aimed to evaluate the effects of a single dose of curcumin and/or fish oil on postprandial glycaemic parameters in healthy individuals. This was a randomised, placebo-controlled and crossover study. Sixteen (n = 16) volunteers were randomised to receive placebo, curcumin (180 mg) tablets, fish oil (1.2 g long chain omega-3 polyunsaturated fatty acids) capsules and curcumin + fish oil prior to a standard meal on 4 test days separated by a week. Blood glucose, serum insulin and triglycerides were measured at intervals between 0–120 min. Difference between the treatments was measured using two-way repeated measures analysis of variance and pair-wise comparisons using Wilcoxon signed-rank or paired t-test as appropriate. Postprandial glucose concentrations were significantly lower in the curcumin (60.6%, P = 0.0007) and curcumin + fishoil group (51%, P = 0.002) groups at 60 min from baseline. Compared with placebo, area under the curve (AUC) for change in blood glucose concentration was reduced by curcumin (36%, P = 0.003) and curcumin + fishoil (30%, 0.004), but not fish oil alone (p = 0.105). Both curcumin (P = 0.01) and curcumin + fishoil (P = 0.03) treatments significantly lowered postprandial insulin (AUC) by 26% in comparison with placebo. Curcumin, but not fish oil, reduces postprandial glycaemic response and insulin demand for glucose control.
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Tsuda T. Curcumin as a functional food-derived factor: degradation products, metabolites, bioactivity, and future perspectives. Food Funct 2018; 9:705-714. [PMID: 29206254 DOI: 10.1039/c7fo01242j] [Citation(s) in RCA: 233] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Curcumin is a polyphenol found in turmeric (Curcuma longa), used as a spice, in food coloring, and as a traditional herbal medicine. It has been shown that curcumin has health benefits such as antioxidant, anti-inflammatory, and anticancer properties, improvement of brain function, and control of obesity and diabetes. However, native curcumin easily degrades and has low oral bioavailability, and a recent report has expressed doubt about curcumin's various effects. To overcome its low bioavailability, various curcumin formulations with enhanced bioavailability are currently being developed. This review discusses the chemistry, metabolism, and absorption of curcumin, to which various reported health benefits have been ascribed, as well as curcumin's degradation products and metabolites and their possible functions. Moreover, the research trend towards the obesity- and diabetes-preventing/suppressing aspects of curcumin and the latest case studies on highly water-dispersible and bioavailable curcumin formulations will be discussed. We summarize the challenges concerning research on curcumin's health benefits as follows: clarifying the relationship between curcumin's health benefits and the formation of curcumin-derived oxidation and degradation products and metabolites, determining whether curcumin itself or other components in turmeric are responsible for its effects, and conducting further human trials in which multiple research groups employ the same samples and conditions. High-bioavailability formulations would be useful in such future studies.
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Affiliation(s)
- Takanori Tsuda
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 487-8501, Japan.
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