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Katirci E, Kendirci-Katirci R, Korgun ET. Effects of Stevioside on the Expressions of GLUT 1, GLUT 3, and GLUT 4 Proteins in Diabetic Rat Placenta. PLANTA MEDICA 2023. [PMID: 36913970 DOI: 10.1055/a-2003-9463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The placenta provides maternal-fetal nutrient transport. The primary source of energy for fetus development is glucose and maternal-fetal glucose transport occurs through glucose transporters (GLUTs). Stevioside, a component of Stevia rebaudiana Bertoni, is used for medicinal and commercial purposes. We aim to determine the effects of stevioside on GLUT 1, GLUT 3, and GLUT 4 proteins expressions in diabetic rat placentas. The rats are divided into four groups. A single dose of streptozotocin (STZ) is administered to form the diabetic groups. Pregnant rats receive stevioside to form the stevioside and diabetic + stevioside groups. According to immunohistochemistry results, GLUT 1 protein is found in both the labyrinth and junctional zones. GLUT 3 protein is limited in the labyrinth zone. GLUT 4 protein is detected in trophoblast cells. According to Western blotting results, on the 15th and 20th days of pregnancy, there is no difference in the expression of GLUT 1 protein between groups. On the 20th day of pregnancy, the expression of GLUT 3 protein in the diabetic group is statistically higher compared to the control group. On the 15th day and 20th day of pregnancy, the expression of GLUT 4 protein in the diabetic group is statistically lower compared to the control group. Insulin levels in blood samples derived from rat abdominal aorta are determined by the ELISA method. According to the ELISA results, there is no difference in insulin protein concentration between groups. Stevioside treatment reduces GLUT 1 protein expression under diabetic conditions.
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Affiliation(s)
- Ertan Katirci
- Department of Histology and Embryology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Remziye Kendirci-Katirci
- Department of Histology and Embryology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Emin Turkay Korgun
- Department of Histology and Embryology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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Barakat H, Al-Roug K, Algonaiman R, Althwab SA, Alfheeaid HA, Alhomaid RM, Almujaydil MS, Bushnaq T, Ebeid TA. Biological Assessment of Stevioside and Sucralose as Sucrose Substitutes for Diabetics on STZ-Induced Diabetes in Rats. Molecules 2023; 28:940. [PMID: 36770608 PMCID: PMC9920551 DOI: 10.3390/molecules28030940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/20/2023] Open
Abstract
Numerous food organizations have identified excessive calorie consumption and accompanying ailments as significant health risks associated with high sugar consumption. Administering stevioside (ST), sucralose (SU), and the two synergically (SU+ST) affected normal rats' weight gain. In the current study, SU showed the highest undesired effect. Indeed, administering the three treatments to diabetic rats (DR) did not improve the rats' weight gain. Although, insulin injection synergically with the treatments improved the weight gain, as recorded after three weeks. The best-improving rate was observed in the ST group. After the administration of ST and ST+SU to the DR, the blood glucose level (GL) was positively affected, with SU having no effects on reducing the GL. A considerable reduction in serum insulin (SIL) was noted in the DR+SU group. On the contrary, ST did not negatively affect the SIL, rather an improvement was recorded. In addition, giving SU did not significantly affect the ALT level in the DR or normal rats (NR). A significant improvement in total bilirubin (TBILI) was observed when insulin was injected with ST or SU in DR groups. Further, triglycerides (TG) after administering ST, SU, or ST+SU to NR had no significant difference compared to the control group (NR). Although, the three treatments markedly but not significantly lowered TG in the DR. For total cholesterol (CHO), both DR and NR had no significant effect after the three treatments. No histopathological alterations were recorded in the NR group. Diffuse and severe atrophy of the islands of Langerhans due to depletion of their cells and mild papillary hyperplasia of the pancreatic ducts were represented by a slightly folded ductal basement membrane and newly formed ductules in STZ-DR. Simultaneous atrophy and absence of the cells of islands of Langerhans besides ductal hyperplasia were evident in DR+SU. Hyperplastic ductal epithelium and atrophic Langerhans cells were seen in DR+SU+In. Degeneration and mild atrophy were observed in the islands of Langerhans structures. There was essentially no noticeable change after utilizing ST. A slight shrinkage of the Langerhans' islets was detected in DR+ST. In DR+ST+In, no histopathological alterations in the islands of Langerhans were recorded. Congestion in the stromal blood vessels associated with degenerative and necrotic changes in the cells of the islands of Langerhans in DR+SU+ST was observed. In NR+SU, congestion of the blood vessels associated with mild atrophy in the islands of Langerhans and dilatation in stromal blood vessels was noticed. In conclusion, ST is safe, and SU should be taken cautiously, such as mixing with ST and/or taken at a very low concentration to avoid its drastic effect on the human body.
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Affiliation(s)
- Hassan Barakat
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Food Technology Department, Faculty of Agriculture, Benha University, Banha 13736, Egypt
| | - Khaled Al-Roug
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Raya Algonaiman
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Sami A. Althwab
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Hani A. Alfheeaid
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Raghad M. Alhomaid
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Mona S. Almujaydil
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Taqwa Bushnaq
- Department of Food Science and Nutrition, College of Science, Taif University, Taif 21944, Saudi Arabia
| | - Tarek A. Ebeid
- Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
- Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
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Chowdhury AI, Rahanur Alam M, Raihan MM, Rahman T, Islam S, Halima O. Effect of stevia leaves ( Stevia rebaudiana Bertoni) on diabetes: A systematic review and meta-analysis of preclinical studies. Food Sci Nutr 2022; 10:2868-2878. [PMID: 36171777 PMCID: PMC9469865 DOI: 10.1002/fsn3.2904] [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: 07/17/2021] [Revised: 03/05/2022] [Accepted: 04/06/2022] [Indexed: 12/09/2022] Open
Abstract
Stevia (Stevia rebaudiana Bertoni) is a natural herb with biological activities such as anticancer, antidiabetic, anticardiovascular disease, anti-inflammatory, and antimicrobial. The current systematic review and meta-analysis of previously published data were performed to assess the antidiabetic effect of stevia leaves. Three electronic databases (PubMed, CENTRAL, and DOAJ) had been used for searching articles published before September 2020. Meta-analysis via random-effect model had been performed to assess the effects of different doses of stevia on blood glucose level (BGL) and studies were weighted according to an estimate of the standard mean difference (SMD). Overall, 16 eligible studies were selected for qualitative analysis and 9 were included for quantitative analysis. The results of the meta-analysis for BGL showed that at the doses of 200, 300, and 400 mg/kg of stevia leaves there was a significant difference in means of BGL between the intervention and control group and the dose of 500 mg/kg showed no significance (Standard mean difference (SMD): -3.84 (-9.96, 2.27); p = .22). Based on the duration of intervention, subgroup analysis of articles showed a significant difference between the groups (p < .001). The results of the meta-analysis support the hypothesis that stevia leaf has an antihyperglycemic effect and reduces the blood glucose level at doses of 200, 300, and 400 mg/kg. Therefore, more clinical trials on animals and humans have to be done to investigate the antidiabetic and antihyperglycemic effects along with the efficacy and safety of these medicinal leaves.
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Affiliation(s)
- Akibul Islam Chowdhury
- Department of Food Technology and Nutrition ScienceNoakhali Science and Technology UniversityNoakhaliBangladesh
| | - Mohammad Rahanur Alam
- Department of Food Technology and Nutrition ScienceNoakhali Science and Technology UniversityNoakhaliBangladesh
| | - M Maruf Raihan
- Department of Food Technology and Nutrition ScienceNoakhali Science and Technology UniversityNoakhaliBangladesh
| | - Tanjina Rahman
- Department of Food Technology and Nutrition ScienceNoakhali Science and Technology UniversityNoakhaliBangladesh
- Institute of Nutrition and Food ScienceUniversity of DhakaDhakaBangladesh
| | - Saiful Islam
- Institute of Nutrition and Food ScienceUniversity of DhakaDhakaBangladesh
| | - Oumma Halima
- Department of Food Technology and Nutrition ScienceNoakhali Science and Technology UniversityNoakhaliBangladesh
- Institute of Nutrition and Food ScienceUniversity of DhakaDhakaBangladesh
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Sambra V, Vicuña IA, Priken KM, Luna SL, Allendes DA, Godoy PM, Novik V, Vega CA. Acute responses of stevia and d-tagatose intake on metabolic parameters and appetite/satiety in insulin resistance. Clin Nutr ESPEN 2022; 49:217-224. [DOI: 10.1016/j.clnesp.2022.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 10/18/2022]
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Olas B. Stevia rebaudiana Bertoni and its secondary metabolites; their effects on cardiovascular risk factors. Nutrition 2022; 99-100:111655. [DOI: 10.1016/j.nut.2022.111655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/10/2022] [Accepted: 03/14/2022] [Indexed: 11/26/2022]
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Bugliani M, Tavarini S, Grano F, Tondi S, Lacerenza S, Giusti L, Ronci M, Maidecchi A, Marchetti P, Tesi M, Angelini LG. Protective effects of Stevia rebaudiana extracts on beta cells in lipotoxic conditions. Acta Diabetol 2022; 59:113-126. [PMID: 34499239 PMCID: PMC8758658 DOI: 10.1007/s00592-021-01793-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 08/23/2021] [Indexed: 12/16/2022]
Abstract
AIMS Stevia rebaudiana Bertoni leaf extracts have gained increasing attention for their potential protection against type 2 diabetes. In this study, we have evaluated the possible beneficial effects of Stevia rebaudiana leaf extracts on beta-cells exposed to lipotoxicity and explored some of the possible mechanisms involved. METHODS Extracts, deriving from six different chemotypes (ST1 to ST6), were characterized in terms of steviol glycosides, total phenols, flavonoids, and antioxidant activity. INS-1E beta cells and human pancreatic islets were incubated 24 h with 0.5 mM palmitate with or without varying concentrations of extracts. Beta-cell/islet cell features were analyzed by MTT assay, activated caspase 3/7 measurement, and/or nucleosome quantification. In addition, the proteome of INS-1E cells was assessed by bi-dimensional electrophoresis (2-DE). RESULTS The extracts differed in terms of antioxidant activity and stevioside content. As expected, 24 h exposure to palmitate resulted in a significant decrease of INS-1E cell metabolic activity, which was counteracted by all the Stevia extracts at 200 μg/ml. However, varying stevioside only concentrations were not able to protect palmitate-exposed cells. ST3 extract was also tested with human islets, showing an anti-apoptotic effect. Proteome analysis showed several changes in INS-1E beta-cells exposed to ST3, mainly at the endoplasmic reticulum and mitochondrial levels. CONCLUSIONS Stevia rebaudiana leaf extracts have beneficial effects on beta cells exposed to lipotoxicity; this effect does not seem to be mediated by stevioside alone (suggesting a major role of the leaf phytocomplex as a whole) and might be due to actions on the endoplasmic reticulum and the mitochondrion.
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Affiliation(s)
- Marco Bugliani
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Silvia Tavarini
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Francesca Grano
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Silvia Tondi
- Aboca SpA Società Agricola, Sansepolcro, Tuscany, Italy
| | | | - Laura Giusti
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
- School of Pharmacy, University of Camerino, Camerino, Italy
| | - Maurizio Ronci
- Department of Pharmacy and Centre for Advanced Studies and Technologies (CAST), University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy
| | | | - Piero Marchetti
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.
- Department of Pharmacy and Centre for Advanced Studies and Technologies (CAST), University "G. D'Annunzio" of Chieti-Pescara, Chieti, Italy.
| | - Marta Tesi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Luciana G Angelini
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
- Centro Interdipartimentale NUTRAFOOD, University of Pisa, Pisa, Italy
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Nabi I, Megateli I, Nait Bachir Y, Djellouli S, Hadj‐Ziane‐Zafour A. Effect of stevia and pectin supplementation on physicochemical properties, preservation and in‐vivo hypoglycemic potential of orange nectar. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.15124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ikram Nabi
- Chemical Engineering Laboratory Process Engineering Department Faculty of Technology University of Saad Dahlab‐Blida 1 Blida Algeria
| | - Ismaïn Megateli
- Biotechnology, Environment and Health Laboratory Nature and Life Sciences Faculty University of Saad Dahlab‐Blida 1 Blida Algeria
| | - Yacine Nait Bachir
- Chemical Engineering Laboratory Process Engineering Department Faculty of Technology University of Saad Dahlab‐Blida 1 Blida Algeria
| | - Salim Djellouli
- Pharmacology Laboratory Faculty of Medicine University of Saad Dahlab‐Blida 1 Blida Algeria
| | - Amel Hadj‐Ziane‐Zafour
- Chemical Engineering Laboratory Process Engineering Department Faculty of Technology University of Saad Dahlab‐Blida 1 Blida Algeria
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Zou X, Tan Q, Goh BH, Lee LH, Tan KL, Ser HL. ‘Sweeter’ than its name: anti-inflammatory activities of Stevia rebaudiana. ALL LIFE 2020. [DOI: 10.1080/26895293.2020.1771434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Xiaomin Zou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 510006 Guangzhou, People’s Republic of China
| | - QiWen Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 510006 Guangzhou, People’s Republic of China
| | - Bey-Hing Goh
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China
- Biofunctional Molecule Exploratory Research Group (BMEX), School of Pharmacy, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Learn-Han Lee
- Institute of Pharmaceutical Science, University of Veterinary and Animal Science, Lahore, Pakistan
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan, Malaysia
| | - Kai-Leng Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 510006 Guangzhou, People’s Republic of China
| | - Hooi-Leng Ser
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, 510006 Guangzhou, People’s Republic of China
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan, Malaysia
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Ranjbar T, Nekooeian AA, Tanideh N, Koohi-Hosseinabadi O, Masoumi SJ, Amanat S, Azarpira N, Monabati A. A comparison of the effects of Stevia extract and metformin on metabolic syndrome indices in rats fed with a high-fat, high-sucrose diet. J Food Biochem 2020; 44:e13242. [PMID: 32478426 DOI: 10.1111/jfbc.13242] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/13/2020] [Accepted: 03/29/2020] [Indexed: 12/18/2022]
Abstract
The beneficial effects of Stevia on metabolic indices have been studied in recent years. However, controversial results emphasize the need for further investigation. We aimed to examine and compare the effects of Stevia's hydroalcoholic extract with two dosages (200, 400 mg/kg) with those of metformin (100 mg/kg) on metabolic syndrome (MetS) indices of rats fed with a high-fat, high-sucrose diet (HFHS). It was found that both Stevia extract and metformin could prevent the adverse effects of a HFHS on lipid profile, liver enzymes, total antioxidant capacity (TAC), and histopathologic factors. Except for the finding that metformin showed a greater potential to alleviate insulin resistance than did Stevia extract, no significant difference was observed between the rats receiving metformin or Stevia extract. In addition, using a high treatment dosage of Stevia extract did not lead to better results than a low dosage. Collectively, the efficacy of Stevia extracts to modify metabolic, oxidative, and histopathological indices in a MetS model was comparable to that of the metformin. PRACTICAL APPLICATIONS: This study was aimed to compare the efficiency of Stevia hydroalcoholic extract with metformin in attenuating MetS abnormalities of rats induced by a high-fat, high-sucrose diet. The results showed the beneficial changes caused due to the administration of Stevia extract on lipid profile, antioxidant capacity, liver enzyme, and liver histopathological indices. The changes were comparable with the results of metformin group. Despite some promising results, further investigation is suggested to evaluate the effectiveness of Stevia extract on human subjects.
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Affiliation(s)
- Tahereh Ranjbar
- Department of Clinical Nutrition, School of Nutrition and Food Science, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Akbar Nekooeian
- Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nader Tanideh
- Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.,Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omid Koohi-Hosseinabadi
- Department of Central Research Laboratory, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Jalil Masoumi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Shiraz University of Medical Sciences, Shiraz, Iran.,Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sasan Amanat
- Student Research Committee, Larestan University of Medical Sciences, Larestan, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Monabati
- Department of Pathology and Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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10
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Assi AA, Abd El-hamid DH, Abdel-Rahman MS, Ashry EE, AI Bayoumi S, Ahmed AM. The Potential Efficacy of Stevia Extract, Glimepiride and Their Combination in Treating Diabetic Rats: A Novel Strategy in Therapy of Type 2 Diabetes Mellitus. EGYPTIAN JOURNAL OF BASIC AND CLINICAL PHARMACOLOGY 2020. [DOI: 10.32527/2020/101455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Abdel-Azim Assi
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Doaa H. Abd El-hamid
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | | | - Esraa E. Ashry
- Department of Pharmacology, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Soad AI Bayoumi
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Asmaa M. Ahmed
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Younes M, Aquilina G, Engel KH, Fowler P, Frutos Fernandez MJ, Fürst P, Gürtler R, Gundert-Remy U, Husøy T, Manco M, Mennes W, Moldeus P, Passamonti S, Shah R, Waalkens-Berendsen I, Wölfle D, Wright M, Degen G, Giarola A, Rincon AM, Castle L. Safety of a proposed amendment of the specifications for steviol glycosides (E 960) as a food additive: to expand the list of steviol glycosides to all those identified in the leaves of Stevia Rebaudiana Bertoni. EFSA J 2020; 18:e06106. [PMID: 32874306 PMCID: PMC7448073 DOI: 10.2903/j.efsa.2020.6106] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The EFSA Panel on Food Additives and Flavourings (FAF) provides a scientific opinion on the safety of the proposed amendment of the specifications for steviol glycosides (E 960) as a food additive, in particular to expand the list of steviol glycosides to 60 steviol glycosides identified in the leaves of Stevia Rebaudiana Bertoni. With the existing specifications, the food additive must be comprised of not less than 95% of the 11 named steviol glycosides. The proposed change is to include all 60 steviol glycosides in the same limit value of 95% and this would allow the presence of up to 5% of impurities. FAF Panel considered that all steviol glycosides share the same metabolic fate, and therefore, the safety of 60 identified steviol glycosides can be based on read-across from toxicological data previously evaluated by EFSA and the acceptable daily intake (ADI) of 4 mg/kg body weight (bw) per day will apply to all those steviol glycosides. However, according to the proposed change in specifications, there remains a small but not insignificant fraction of the additive that would be undefined and therefore cannot be evaluated by the Panel. The Panel concluded that the inclusion of the 60 steviol glycosides in the proposed specifications for steviol glycoside (E960) would not be of safety concern. However, the Panel cannot conclude on the safety of the proposed amendment to the specifications of steviol glycosides (E 960) as food additive if the purity assay value of not less than 95% for the total content of steviol glycosides is maintained.
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12
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Abstract
PURPOSE OF REVIEW The goal of this review is to discuss the data on natural alternative sweeteners and their effects on glucose homeostasis and other metabolic parameters within the past five years. We sought to answer whether common natural alternative sweeteners have a positive or negative effect on glucose control in both human and animal models, and whether the data supports their widespread use as a tool to help reduce the prevalence of diabetes and associated comorbid conditions. RECENT FINDINGS Recent studies suggest that natural alternative sweeteners may reduce hyperglycemia, improve lipid metabolism, and have antioxidant effects particularly in those that have baseline diabetes. Diabetes and metabolic syndrome have become a global healthcare crisis and the sugar overconsumption plays a major role. The use of artificial sweeteners has become more prevalent to improve insulin resistance in those with diabetes, obesity, and metabolic syndrome, although the evidence does not support this result. There are however some promising data to suggest that natural alternative sweeteners may be a better alternative to sugar and artificial sweeteners.
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Affiliation(s)
- Emily Mejia
- University of Miami Miller School of Medicine, Miami, FL, 33146, USA
| | - Michelle Pearlman
- Department of Medicine, Division of Gastroenterology & Hepatology, University of Miami Health Systems, Miller School of Medicine, 1120 NW 14th Street, Miami, FL, 33136, USA.
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13
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Goodarzi G, Shirgir A, Alavi S, Khoshi A. Effect of insulin-glucose metabolism compared with obesity on adipose omentin gene expression in different models of diabetic C57BL/6 mice. Diabetol Metab Syndr 2019; 11:65. [PMID: 31428203 PMCID: PMC6694498 DOI: 10.1186/s13098-019-0460-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/07/2019] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Omentin, releasing by adipose-tissue may be related to glucose metabolism. The omentin circulating levels and the related mRNA expression in visceral adipose-tissue are different in types of diabetes and the exact function of this molecule is still unknown. The aim of this study was to examine omentin gene expression in adipose-tissues of type-1 and type-2 diabetic mice for the investigation of the effects of fat-mass and insulin-glucose metabolism. METHODS In this study, 36 C57BL/6 mice were divided into four experimental groups, including control, type-1 diabetes (inducted by streptozotocin), type-2 diabetes with obesity (high-fat diet + low-dose-streptozotocin [HFD + STZ]), and type-2 with normal weight (normal-pellet diet + low-dose-streptozotocin [NPD + STZ]). The present study involved the measurements of oral-glucose-tolerance-test and the levels of biochemical parameters, including blood glucose, omentin, insulin, lipid-profile, as well as aminotransferases. In addition, the omentin mRNA expression was evaluated by real-time polymerase-chain-reaction. RESULTS The results of omentin gene expression analysis showed a significant difference between mRNA expressions in the experimental groups. The plasma omentin levels were significantly higher in type-1 diabetes group and lower in type-2 diabetes with NPD + STZ; however, the plasma omentin levels were not changed in the HFD + STZ group. In addition, the findings of serum-biochemical analysis revealed significant differences, compared to the control-group. CONCLUSIONS The omentin expression may be affected by insulin and glucose levels in different types of diabetes more than fat-mass, and due to the local activity, the serum omentin may not comply with its gene expression.
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Affiliation(s)
- Golnaz Goodarzi
- Department of Clinical Biochemistry, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Amirreza Shirgir
- Student Research Committee, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Sadegh Alavi
- Student Research Committee, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Amirhosein Khoshi
- Department of Clinical Biochemistry, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
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Jinlida Granules Improve Dysfunction of Hypothalamic-Pituitary-Thyroid Axis in Diabetic Rats Induced by STZ. BIOMED RESEARCH INTERNATIONAL 2019; 2018:4764030. [PMID: 29984235 PMCID: PMC6011157 DOI: 10.1155/2018/4764030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 04/02/2018] [Indexed: 01/08/2023]
Abstract
Objective We aim to explore the effects and mechanisms of Jinlida granules on the dysfunction of hypothalamic-pituitary-thyroid (HPT) axis in diabetic rats induced by streptozotocin. Methods A total of 48 SD rats were randomized into normal control group (NC, n = 6) and diabetic group (n = 42). Rats in diabetic group were randomly divided into diabetes mellitus (DM) control group, low, medium, and high doses of Jinlida group (JL, JM, and JH), medium dose of Jinlida plus Tongxinluo group (JM + T), metformin group (Met), and Saxagliptin group (Sax) (n = 6 in each group). Diabetic rats were obtained by intraperitoneal injection of streptozotocin and sacrificed at 8 weeks to examine the function of HPT axis. Results Levels of fasting blood glucose (P < 0.05), pIκB, TNFα (P < 0.05), pNF-κB, and IL-6 (P < 0.01) in liver tissue and TSHR mRNA expression (P < 0.01) in diabetic group were significantly increased, while levels of serum T3 and T4, thyroid hormone receptor (TR) mRNA and Dio1 mRNA in liver tissue, and sodium iodide symporter (NIS) mRNA in thyroid tissue in diabetic group were significantly decreased compared with those in NC group (P < 0.01). Among diabetic groups, level of fasting blood glucose in JH, JM + T and Met group was lower (P < 0.05) compared with DM group. However, levels of serum T3 and T4, TR mRNA in liver tissue, TSHR, and NIS mRNA in thyroid tissue in JH, JM + T, Met, and Sax group were significantly increased (P < 0.01) compared to DM group. In contrast, levels of Dio1 mRNA, pI-κB in Met and JM + T groups, pNF-κB in JH, JM + T, and Met group, and TNFα and IL-6 in JM, JH, JM + T, and Met group were significantly decreased (P < 0.05). HE staining showed reduced thyroid follicular epithelium and follicular area, as well as increased colloid area in DM group, indicating impaired synthesis, reabsorption, and secretory of TH in diabetes, which was significantly improved in JH, JM + T, and Met groups. Conclusion HPT axis dysfunction in DM could be significantly improved by Jinlida granules. The mechanism might be associated with the anti-inflammatory effects involving NF-κB pathway. Our findings suggested the potential benefit of Jinlida granules for patients with HPT axis dysfunction and DM, which was to be verified by more experimental and clinical studies.
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Tangganjian decoction ameliorates type 2 diabetes mellitus and nonalcoholic fatty liver disease in rats by activating the IRS/PI3K/AKT signaling pathway. Biomed Pharmacother 2018; 106:733-737. [DOI: 10.1016/j.biopha.2018.06.089] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 12/31/2022] Open
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Ahmad U, Ahmad RS, Arshad MS, Mushtaq Z, Hussain SM, Hameed A. Antihyperlipidemic efficacy of aqueous extract of Stevia rebaudiana Bertoni in albino rats. Lipids Health Dis 2018; 17:175. [PMID: 30053819 PMCID: PMC6064095 DOI: 10.1186/s12944-018-0810-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 07/03/2018] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Stevia (Stevia rebaudiana Bertoni) natural, safe, non-toxic, non-caloric sugar substitute is rich source of pharmacologically important glycoside stevioside that is linked to the pathology and complications of hyperlipidemia. METHODS The present research was carried out to explore the anti-hyperlipidemic effect of aqueous extract of Stevia rebaudiana Bertoni leaves in albino rats. For this purpose, hyperlipidemia was induced by administration of Cholesterol (90% E, Appli Chem, Darmstadt, Germany) mixed at dose of 400 mg/kg body weight of rats in their daily routine feed. The hyperlipidemic rats were administered with aqueous stevia extract at different dose levels (200, 300, 400 and 500 ppm/kg b.w.) for 8 weeks; the control rats were fed basal diet during this period. Ethical approval for the current research was obtained from Institutional Review Board Faculty of Science & Technology Government College University, Faisalabad, Pakistan. RESULTS Stevia aqueous extract decreased the body weight gain by lowering the feed intake of hyperlipidemic rats. Furthermore, administration of stevia extract at different levels significantly (P < 0.05) lowered the TC (125.22 ± 5.91 to 110.56 ± 5.81 mg/dL), TG (102.13 ± 6.89 to 98.62 ± 7.22 mg/dL), LDL (33.02 ± 4.79 to 22.77 ± 4.36 mg/dL), VLDL (21.22 ± 5.79 to 19.33 ± 5.95 mg/dL) levels and LDL/HDL ratios (0.83 ± 1.22 to 0.54 ± 1.66 mg/dL) from H1 to H4. Conversely, it improved the HDL (39.76 ± 4.34 to l42.02 ± 4.39 mg/dL) level in hyperlipidemic rats compared with untreated rats after eight weeks study period. CONCLUSION It is concluded that aqueous extract of stevia has anti-hyperlipidemic effects in albino rats, and therefore could be a promising nutraceutical therapy for the management of hyperlipidemia and its associated complications.
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Affiliation(s)
- Uswa Ahmad
- Department of Food Science, Nutrition & Home Economics, Government College University, Faisalabad, Pakistan
| | - Rabia Shabir Ahmad
- Institute of Home and Food Sciences, Faculty of Science and Technology, Government College University, Faisalabad, 38000 Pakistan
| | - Muhammad Sajid Arshad
- Institute of Home and Food Sciences, Faculty of Science and Technology, Government College University, Faisalabad, 38000 Pakistan
| | - Zarina Mushtaq
- Institute of Home and Food Sciences, Faculty of Science and Technology, Government College University, Faisalabad, 38000 Pakistan
| | | | - Aneela Hameed
- Department of Food Science and Technology, Bahauudin Zakariya University, Multan, 38000 Pakistan
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Ahmad U, Ahmad RS. Anti diabetic property of aqueous extract of Stevia rebaudiana Bertoni leaves in Streptozotocin-induced diabetes in albino rats. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:179. [PMID: 29890969 PMCID: PMC5996538 DOI: 10.1186/s12906-018-2245-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 05/30/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Stevia (Stevia rebaudiana) natural, non-caloric sugar substitute is rich source of pharmacologically important glycoside stevioside that is linked to the pathology and complications of diabetes. METHODS The current research was carried out to explore the anti-diabetic effect of aqueous extract of Stevia rebaudiana leaves in albino rats. For this purpose, diabetes was induced by administration of streptozotocin (40 mg/kg body weight, intraperitoneally). The diabetic rats were administered with aqueous stevia extract at different dose levels (200, 300, 400 and 500 ppm/kg b.w) for 8 weeks; the control rats were fed basal diet during this period. RESULTS Stevia aqueous extract improved caloric management and weight control by decreasing the feed intake and body weight gain. Furthermore, intake of stevia extract resulted in significant (P < 0.05) decrease in the random blood glucose level (- 73.24%) and fasting blood glucose (- 66.09%) and glycosylated (HbA1c) hemoglobin (5.32%) while insulin (17.82 μIU/mL) and liver glycogen (45.02 mg/g) levels significantly improved in the diabetic rats, compared with the diabetic and non-diabetic control rats after 8 weeks study period. CONCLUSIONS It is concluded that aqueous extact of stevia has anti-diabetic effects in albino rats, and therefore could be promising nutraceutical therapy for the management of diabetes and its associated complications.
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Affiliation(s)
- Uswa Ahmad
- Department of Food Science, Nutrition & Home Economics, Government College University, Allama Iqbal Road, Faisalabad, 38000 Pakistan
| | - Rabia Shabir Ahmad
- Department of Food Science, Nutrition & Home Economics, Government College University, Allama Iqbal Road, Faisalabad, 38000 Pakistan
- Institute of Home and Food Sciences, Government College University, Faisalabad, 38000 Pakistan
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Castro CAD, da Silva KA, Buffo MM, Pinto KNZ, Duarte FDO, Nonaka KO, Aníbal FDF, Duarte ACGDO. Experimental type 2 diabetes induction reduces serum vaspin, but not serum omentin, in Wistar rats. Int J Exp Pathol 2017; 98:26-33. [PMID: 28444853 DOI: 10.1111/iep.12220] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 12/28/2016] [Indexed: 12/14/2022] Open
Abstract
Vaspin and omentin are adipose tissue adipokines that have often been related to obesity and its comorbidities. The aim of this study was to investigate the behaviour of serum omentin and vaspin in models of type 2 diabetes. To do this, Wistar rats (~200 g) were randomly divided into two groups: a non-diabetic group (n = 6) and a diabetic group fed on a high-fat diet (n = 6) and a low dose of streptozotocin (Sigma® ). All procedures were approved by the Brazilian Ethics Committee. Body weight (BW) and food intake were recorded daily. Tail blood glucose levels were assessed at the end of the diabetes induction period. The insulin tolerance test (ITT) was performed after the diabetes induction period (7 weeks). The serum and tissues (liver, pancreas, and retroperitoneal (RET), epididymal (EPI) and visceral (VIS) white adipose tissues) were immediately removed and weighed. Analyses of levels of insulin, omentin, vaspin, adiponectin and inflammatory cytokines IL-6, IL-8 (CXCL8), TNF-α and C-reactive protein (CRP) in serum were performed using the enzyme-linked immunosorbent assay (ELISA). Our results showed that IL-8 and CRP serum levels in the diabetic group were significantly higher than in the non-diabetic group. Vaspin and adiponectin values were lower for the diabetic group than for the non-diabetic group. Omentin, IL-6 and TNF-α values did not differ between the groups. Our results showed that both the metabolism of the adipose tissue and the secretion of adipokines may be affected in diabetic rats. Omentin showed no difference between the groups, although the vaspin values decreased in the diabetic group.
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Affiliation(s)
| | - Karina Ana da Silva
- Department of Physiological Sciences, Federal University of São Carlos, São Paulo, Brazil
| | - Marina Molina Buffo
- Department of Physical Education, Federal University of São Carlos, São Paulo, Brazil
| | | | | | - Keico Okino Nonaka
- Department of Physiological Sciences, Federal University of São Carlos, São Paulo, Brazil
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Amin MM, Arbid MS. Estimation of ellagic acid and/or repaglinide effects on insulin signaling, oxidative stress, and inflammatory mediators of liver, pancreas, adipose tissue, and brain in insulin resistant/type 2 diabetic rats. Appl Physiol Nutr Metab 2017; 42:181-192. [DOI: 10.1139/apnm-2016-0429] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Even though ellagic acid has previously been valued in many models of cancer, so far its full mechanistic effect as a natural antiapoptotic agent in the prevention of type 2 diabetes complications has not been completely elucidated, which was the goal of this study. We fed albino rats a high-fat fructose diet (HFFD) for 2 months to induce insulin resistance/type 2 diabetes and then treated the rats with ellagic acid (10 mg/kg body weight, orally) and/or repaglinide (0.5 mg/kg body weight, orally) for 2 weeks. At the serum level, ellagic acid challenged the consequences of HFFD, significantly improving the glucose/insulin balance, liver enzymes, lipid profile, inflammatory cytokines, redox level, adipokines, ammonia, and manganese. At the tissue level (liver, pancreas, adipose tissue, and brain), ellagic acid significantly enhanced insulin signaling, autophosphorylation, adiponectin receptors, glucose transporters, inflammatory mediators, and apoptotic markers. Remarkably, combined treatment with both ellagic acid and repaglinide had a more pronounced effect than treatment with either alone. These outcomes give new insight into the promising molecular mechanisms by which ellagic acid modulates numerous factors induced in the progression of diabetes.
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Affiliation(s)
- Mohamed M. Amin
- Department of Pharmacology, Medical Division, National Research Centre, 33 EL Bohouth St., Dokki, Giza 12622, Egypt
- Department of Pharmacology, Medical Division, National Research Centre, 33 EL Bohouth St., Dokki, Giza 12622, Egypt
| | - Mahmoud S. Arbid
- Department of Pharmacology, Medical Division, National Research Centre, 33 EL Bohouth St., Dokki, Giza 12622, Egypt
- Department of Pharmacology, Medical Division, National Research Centre, 33 EL Bohouth St., Dokki, Giza 12622, Egypt
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