1
|
Zhao Y, Qiao M, Wang X, Luo X, Yang J, Hu J. Allantoin reduces glucotoxicity and lipotoxicity in a type 2 diabetes rat model by modulating the PI3K and MAPK signaling pathways. Heliyon 2024; 10:e34716. [PMID: 39144993 PMCID: PMC11320158 DOI: 10.1016/j.heliyon.2024.e34716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 07/13/2024] [Accepted: 07/15/2024] [Indexed: 08/16/2024] Open
Abstract
Objective The current study aimed to investigate the potential therapeutic impact of allantoin on diabetes produced by a high-fat diet (HFD) and streptozotocin (STZ) in rats. Subjects and methods Male Sprague-Dawley rats were fed a high-fat diet to induce insulin resistance, followed by streptozotocin injection to induce diabetes. The effect of oral treatment of allantoin (200, 400 and 800 mg/kg/day) for 8 weeks was evaluated by calculating the alteration in metabolic parameters, biochemical indicators, the oral glucose tolerance tests (OGTT) and hyperinsulinemic-euglycemic clamp tests were performed. Histopathological studies were performed in the liver, kidney and pancreas. Next, the expressions of the MAPK and insulin signaling pathway were measured by Western blot analysis to elucidate the potential mechanism underlying these antidiabetic activities. Results The administration of allantoin resulted in a significant decrease in fasting blood glucose (FBG) levels, glycogen levels, and glycosylated hemoglobin levels in diabetic rats. Additionally, allantoin therapy led to a dose-dependent increase in body weight growth and serum insulin levels. In addition, the administration of allantoin resulted in a considerable reduction in lipid profile levels and amelioration of histological alterations in rats with diabetes. The administration of allantoin to diabetic rats resulted in a notable decrease in Malondialdehyde (MDA) levels, accompanied by an increase in the activity of antioxidant enzymes in the serum, liver, and kidney. The findings of oral glucose tolerance and hyperinsulinemic-euglycemic clamp tests demonstrated a significant rise in insulin resistance following the administration of allantoin. The upregulation of IRS-2/PI3K/p-Akt/GLUT expression by allantoin suggests a mechanistic relationship between the PI3K/Akt signaling pathway and the antihyperglycemic activity of allantoin. Furthermore, it resulted in a reduction in the levels of TGF-β1/p38MAPK/Caspase-3 expression in the aforementioned rat tissues affected by diabetes. Conclusions This study implies that allantoin treats type 2 diabetes by activating PI3K. Additionally, it reduces liver, kidney, and pancreatic apoptosis and inflammation-induced insulin resistance.re.
Collapse
Affiliation(s)
- Yao Zhao
- College of Pharmacy, Xinjiang Medical University, Urumqi, 830017, Xinjiang, China
| | - Ming Qiao
- Department of Pharmacy, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China
- Xinjiang Key Laboratory of Clinical Drug Research, Urumqi 830011, Xinjiang, China
| | - Xiaomei Wang
- College of Pharmacy, Xinjiang Medical University, Urumqi, 830017, Xinjiang, China
| | - Xinjie Luo
- College of Pharmacy, Xinjiang Medical University, Urumqi, 830017, Xinjiang, China
| | - Jianhua Yang
- Department of Pharmacy, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China
- Xinjiang Key Laboratory of Clinical Drug Research, Urumqi 830011, Xinjiang, China
| | - Junping Hu
- College of Pharmacy, Xinjiang Medical University, Urumqi, 830017, Xinjiang, China
- Xinjiang Key Laboratory of Clinical Drug Research, Urumqi 830011, Xinjiang, China
| |
Collapse
|
2
|
Tuero C, Becerril S, Ezquerro S, Neira G, Frühbeck G, Rodríguez A. Molecular and cellular mechanisms underlying the hepatoprotective role of ghrelin against NAFLD progression. J Physiol Biochem 2023; 79:833-849. [PMID: 36417140 DOI: 10.1007/s13105-022-00933-1] [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: 09/06/2022] [Accepted: 11/12/2022] [Indexed: 11/24/2022]
Abstract
The underlying mechanisms for the development and progression of nonalcoholic fatty liver disease (NAFLD) are complex and multifactorial. Within the last years, experimental and clinical evidences support the role of ghrelin in the development of NAFLD. Ghrelin is a gut hormone that plays a major role in the short-term regulation of appetite and long-term regulation of adiposity. The liver constitutes a target for ghrelin, where this gut-derived peptide triggers intracellular pathways regulating lipid metabolism, inflammation, and fibrosis. Interestingly, circulating ghrelin levels are altered in patients with metabolic diseases, such as obesity, type 2 diabetes, and metabolic syndrome, which, in turn, are well-known risk factors for the pathogenesis of NAFLD. This review summarizes the molecular and cellular mechanisms involved in the hepatoprotective action of ghrelin, including the reduction of hepatocyte lipotoxicity via autophagy and fatty acid β-oxidation, mitochondrial dysfunction, endoplasmic reticulum stress and programmed cell death, the reversibility of the proinflammatory phenotype in Kupffer cells, and the inactivation of hepatic stellate cells. Together, the metabolic and inflammatory pathways regulated by ghrelin in the liver support its potential as a therapeutic target to prevent NAFLD in patients with metabolic disorders.
Collapse
Affiliation(s)
- Carlota Tuero
- Department of General Surgery, Clínica Universidad de Navarra, School of Medicine, University of Navarra, Pamplona, Spain
| | - Sara Becerril
- Metabolic Research Laboratory, Clínica Universidad de Navarra, 31008, Pamplona, Irunlarrea 1, Spain
- CIBER Fisiopatología de La Obesidad Y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Silvia Ezquerro
- Metabolic Research Laboratory, Clínica Universidad de Navarra, 31008, Pamplona, Irunlarrea 1, Spain
| | - Gabriela Neira
- Metabolic Research Laboratory, Clínica Universidad de Navarra, 31008, Pamplona, Irunlarrea 1, Spain
| | - Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, 31008, Pamplona, Irunlarrea 1, Spain
- CIBER Fisiopatología de La Obesidad Y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Amaia Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, 31008, Pamplona, Irunlarrea 1, Spain.
- CIBER Fisiopatología de La Obesidad Y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain.
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
| |
Collapse
|
3
|
Yan A, Zhao Y, Zhang L, Liang X, Zhang X, Liang F, Nian S, Li X, Sun Z, Li K, Zhao YF. β-Hydroxybutyrate upregulates FGF21 expression through inhibition of histone deacetylases in hepatocytes. Open Life Sci 2022; 17:856-864. [PMID: 36045720 PMCID: PMC9372706 DOI: 10.1515/biol-2022-0095] [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: 02/16/2022] [Revised: 05/02/2022] [Accepted: 05/09/2022] [Indexed: 11/15/2022] Open
Abstract
Fibroblast growth factor 21 (FGF21) is secreted by hepatocytes as a peptide hormone to regulate glucose and lipid metabolism. FGF21 promotes hepatic ketogenesis and increases ketone body utilization in starvation. Histones are the target molecules of nutrients in regulating hepatic metabolic homeostasis. However, the effect of ketone bodies on FGF21 expression and the involvement of histones in it is not clear yet. The present study observed the effects of β-hydroxybutyrate (β-OHB), the main physiological ketone body, on FGF21 expression in human hepatoma HepG2 cells in vitro and in mice in vivo, and the role of histone deacetylases (HDACs) in β-OHB-regulated FGF21 expression was investigated. The results showed that β-OHB significantly upregulated FGF21 gene expression and increased FGF21 protein levels while it inhibited HDACs’ activity in HepG2 cells. HDACs’ inhibition by entinostat upregulated FGF21 expression and eliminated β-OHB-stimulated FGF21 expression in HepG2 cells. Intraperitoneal injections of β-OHB in mice resulted in the elevation of serum β-OHB and the inhibition of hepatic HDACs’ activity. Meanwhile, hepatic FGF21 expression and serum FGF21 levels were significantly increased in β-OHB-treated mice compared with the control. It is suggested that β-OHB upregulates FGF21 expression through inhibition of HDACs’ activity in hepatocytes.
Collapse
Affiliation(s)
- Aili Yan
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Yanyan Zhao
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Lijun Zhang
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Xiangyan Liang
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Xiaochun Zhang
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Fenli Liang
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Shen Nian
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Xinhua Li
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Zhuo Sun
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| | - Ke Li
- Institute of Basic and Translational Medicine, Xi'an Medical University, Xi'an, 710021, China
| | - Yu-Feng Zhao
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an, 710021, China
| |
Collapse
|
4
|
Kubiś M, Kołodziejski P, Pruszyńska E, Sassek M, Konieczka P, Górka P, Flaga J, Katarzyńska-Banasik D, Hejdysz M, Szumacher-Strabel M, Cieślak A, Kaczmarek SA. Combination of emulsifier and xylanase in wheat diets of broiler chickens. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
|
5
|
Olaniyi KS, Atuma CL, Sabinari IW, Mahmud H, Saidi AO, Fafure AA, Olatunji LA. Acetate-mediated-obestatin modulation attenuates adipose-hepatic dysmetabolism in high fat diet-induced obese rat model. Endocrine 2022; 76:558-569. [PMID: 35229234 DOI: 10.1007/s12020-022-03023-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 02/16/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Approximately 650 million of world adult population is affected by obesity, which is characterized by adipose and hepatic metabolic dysfunction. Short chain fatty acids (SCFAs) have been linked to improved metabolic profile. However, the effect of SCFAs, particularly acetate on adipose-hepatic dysfunction is unclear. Therefore, the present study investigated the role of acetate on adipose-hepatic metabolic dysfunction and the possible involvement of obestatin in high fat diet-induced obese Wistar rats. METHODS Adult male Wistar rats (160-190 g) were allotted into groups (n = 6/group): Control, acetate-treated, obese and obese + acetate-treated groups received vehicle (distilled water), sodium acetate (200 mg/kg), 40% HFD and 40% HFD plus sodium acetate respectively. The administration lasted for 12 weeks. RESULTS HFD caused increased body weight gain and visceral adiposity, insulin resistance, hyperinsulinemia and increased pancreatic-β cell function and plasma/hepatic triglyceride and total cholesterol as well as decreased adipose triglyceride and total cholesterol, increased plasma, adipose, and hepatic malondialdehyde, TNF-α, uric acid, lactate production and plasma/adipose but not gamma-glutamyl transferase and decreased plasma, adipose, and hepatic nitric oxide, glucose-6-phosphate dehydrogenase (G6PD), glutathione (GSH) and obestatin concentration compared to the control group. Notwithstanding, treatment with acetate attenuated the alterations. CONCLUSIONS The results demonstrate that high fat diet-induced obesity is characterized with adipose and hepatic lipid dysmetabolism, which is associated with obestatin suppression. Findings also suggest that acetate provide protection against adipose and hepatic metabolic perturbations by restoring obestatin as well as G6PD/GSH-dependent antioxidant system.
Collapse
Affiliation(s)
- Kehinde S Olaniyi
- Cardio/Repro-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria.
- HOPE Cardiometabolic Research Team & Department of Physiology, College of Health Sciences, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria.
| | - Chukwubueze L Atuma
- Cardio/Repro-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria
| | - Isaiah W Sabinari
- HOPE Cardiometabolic Research Team & Department of Physiology, College of Health Sciences, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria
| | - Hadiza Mahmud
- Cardio/Repro-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria
| | - Azeezat O Saidi
- Cardio/Repro-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria
| | - Adedamola A Fafure
- Neuroscience Unit, Department of Anatomy, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria
| | - Lawrence A Olatunji
- HOPE Cardiometabolic Research Team & Department of Physiology, College of Health Sciences, University of Ilorin, P.M.B. 1515, Ilorin, Nigeria
| |
Collapse
|
6
|
A review of glucoregulatory hormones potentially applicable to the treatment of Alzheimer’s disease: mechanism and brain delivery. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2022. [DOI: 10.1007/s40005-022-00566-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
7
|
Kolodziejski PA, Leciejewska N, Chmurzynska A, Sassek M, Szczepankiewicz A, Szczepankiewicz D, Malek E, Strowski MZ, Checinska-Maciejewska Z, Nowak KW, Pruszynska-Oszmalek E. 30-Day spexin treatment of mice with diet-induced obesity (DIO) and type 2 diabetes (T2DM) increases insulin sensitivity, improves liver functions and metabolic status. Mol Cell Endocrinol 2021; 536:111420. [PMID: 34384849 DOI: 10.1016/j.mce.2021.111420] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/28/2021] [Accepted: 08/07/2021] [Indexed: 01/01/2023]
Abstract
Spexin (SPX) is a 14 aa peptide discovered in 2007 using bioinformatics methods. SPX inhibits food intake and regulates lipid, and carbohydrate metabolism. Here, we evaluate the ability of SPX at improving metabolic control and liver function in obese and type 2 diabetic animals. The effects of 30 days SPX treatment of mice with experimentally induced obesity (DIO) or type 2 diabetes (T2DM) on serum glucose and lipid levels, insulin sensitivity and hormonal profile (insulin, glucagon, adiponectin, leptin, TNF alpha, IL-6 and IL-1β) are characterized. In addition, alterations of hepatic lipid and glycogen contents are evaluated. We report that SPX decreases body weight in healthy and DIO mice, and reduces lipid content in all three animal groups. SPX improves insulin sensitivity in DIO and T2DM animals. In addition, SPX modulates hormonal and metabolic profile by regulating the concentration of adiponectin (concentration increase) and leptin (concentration decrease) in the serum blood of DIO and T2DM mice. Lastly, SPX decreases lipid content as well as IL-6 and TNF-α protein levels in liver of DIO and T2DM mice, and reduces IL-6 and TNF-alpha concentrations in the serum derived from T2DM mice. Based on our results, we conclude that SPX could be involved in the development of obesity and type 2 diabetes mellitus and it can be further evaluated as a potential target for therapy of DIO and T2DM.
Collapse
Affiliation(s)
- Pawel A Kolodziejski
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland.
| | - Natalia Leciejewska
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland
| | - Agata Chmurzynska
- Department of Human Nutrition and Dietetics, Poznan University of Life Sciences, Poznan, Poland
| | - Maciej Sassek
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland
| | | | - Dawid Szczepankiewicz
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland
| | - Emilian Malek
- Department of Preclinical Sciences and Infectious Diseases, Faculty of Veterinary Medicine and Animal Science, Poznań University of Life Sciences, Poland
| | - Mathias Z Strowski
- Department of Hepatology and Gastroenterology and Interdisciplinary Centre of Metabolism: Endocrinology, Diabetes and Metabolism, Charité-University Medicine Berlin, 13353, Berlin, Germany; Department of Internal Medicine-Gastroenterology, Park-Klinik Weissensee, 13086, Berlin, Germany
| | - Zuzanna Checinska-Maciejewska
- Department of Medicine, The President Stanislaw Wojciechowski State University of Applied Sciences in Kalisz, Poland
| | - Krzysztof W Nowak
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland
| | - Ewa Pruszynska-Oszmalek
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Poznan, Poland.
| |
Collapse
|
8
|
Can Figen C, Noyan T, Özdemir Ö. The investigation effect of weight loss on serum vaspin, apelin-13, and obestatin levels in obese individual. TURKISH JOURNAL OF BIOCHEMISTRY 2020. [DOI: 10.1515/tjb-2019-0143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
Objectives
It was aimed to investigate if there were any significant corresponding changes on adipokine levels in obese subjects who achieved a 10% reduction in body weight.
Methods
Thirty obese and 25 healthy adults were enrolled in present study, and serum levels of vaspin, apelin-13, obestatin, and insulin were determined with the ELISA method.
Results
The serum obestatin and apelin-13 values of the obese group obtained as basal and after weight loss was significantly lower than in controls (p<0.05, p<0.01, p<0.01, p<0.05, respectively); however, weight loss did not cause significant changes on these parameters in obese groups (p>0.05). The vaspin level did not differ between the groups (p>0.05). The obese group had characterized increased serum insulin and insulin resistance assessment by the homeostatic assay (HOMA-IR) levels compared to controls (p<0.01, p<0.05, respectively); also, weight loss caused a significant decrease in these parameters compared to basal levels (p<0.01). No significant correlation was detected among the vaspin, apelin-13 and obestatin levels in the obese group (p>0.05).
Conclusions
Obese individuals exhibited decreased levels of apelin-13 and obestatin. Moreover, 10% weight loss caused a significant reduction of insulin resistance, but no significant change was detected on apelin-13, obestatin, and vaspin levels.
Collapse
Affiliation(s)
- Cansu Can Figen
- Ordu University , Faculty of Medicine , Department of Biochemistry , Ordu , Turkey
| | - Tevfik Noyan
- Ordu University , Faculty of Medicine , Department of Biochemistry , Ordu , Turkey
| | - Özlem Özdemir
- Ordu University , Faculty of Medicine, Department of Internal Medicine , Ordu , Turkey
| |
Collapse
|
9
|
Mikołajczak Z, Rawski M, Mazurkiewicz J, Kierończyk B, Józefiak D. The Effect of Hydrolyzed Insect Meals in Sea Trout Fingerling ( Salmo trutta m. trutta) Diets on Growth Performance, Microbiota and Biochemical Blood Parameters. Animals (Basel) 2020; 10:ani10061031. [PMID: 32545777 PMCID: PMC7341494 DOI: 10.3390/ani10061031] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/29/2020] [Accepted: 06/09/2020] [Indexed: 01/17/2023] Open
Abstract
Simple Summary The replacement of fishmeal by environmentally sustainable alternative meals has been one of the targets in aquaculture in recent decades. A number of factors support the use of insect meals, as a group of products characterized by high crude protein and crude fat content, in fish nutrition. Insects are readily accepted by a number of fish species, and they are part of the natural diet of omnivorous and carnivorous species. The present study was conducted to evaluate the effects of hydrolyzed Tenebrio molitor and Zophobas morio meals as a partial replacement for fishmeal in sea trout (Salmo trutta m. trutta) diets on growth performance, feed utilization, organosomatic indices, serum biochemistry, gut histology, and microbiota. In the present study, insect meals inclusion did not cause any adverse impacts on growth performance, feed utilization or gut histomorphology. However, an effect on the organosomatic indices, serum biochemistry, and microbiota was observed. In conclusion, hydrolyzed T. molitor and Z. morio meals seem to be promising alternative protein sources for sea trout nutrition. Abstract The present study is the first introduction of hydrolyzed superworm meal in sea trout nutrition. It was conducted to evaluate the effects of inclusion in the diet of hydrolyzed insect meals as a partial replacement for fishmeal on growth performance, feed utilization, organosomatic indices, serum biochemical parameters, gut histomorphology, and microbiota composition of sea trout (Salmo trutta m. trutta). The experiment was performed on 225 sea trout fingerlings distributed into three groups (3 tanks/treatment, 25 fish/tank). The control diet was fishmeal-based. In the experimental groups, 10% of hydrolyzed mealworm (TMD) and superworm (ZMD) meals were included. The protein efficiency ratio was lower in the TMD and ZMD. Higher organosomatic indices and liver lipid contents were found in the group fed ZMD. The ZMD increased levels of aspartate aminotransferase, and decreased levels of alkaline phosphatase. The Aeromonas spp. and Enterococcus spp. populations decreased in the ZMD. The concentrations of the Carnobacterium spp. decreased in the ZMD and TMD, as did that of the Lactobacillus group in the TMD. In conclusion, insect meals may be an alternative protein source in sea trout nutrition, as they yield satisfying growth performance and have the capability to modulate biochemical blood parameters and microbiota composition.
Collapse
Affiliation(s)
- Zuzanna Mikołajczak
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637 Poznań, Poland;
- Correspondence: (Z.M.); (D.J.)
| | - Mateusz Rawski
- Institute of Zoology, Division of Inland Fisheries and Aquaculture, Poznań University of Life Sciences, Wojska Polskiego 71c, 60-625 Poznań, Poland; (M.R.); (J.M.)
| | - Jan Mazurkiewicz
- Institute of Zoology, Division of Inland Fisheries and Aquaculture, Poznań University of Life Sciences, Wojska Polskiego 71c, 60-625 Poznań, Poland; (M.R.); (J.M.)
| | - Bartosz Kierończyk
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637 Poznań, Poland;
| | - Damian Józefiak
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637 Poznań, Poland;
- Correspondence: (Z.M.); (D.J.)
| |
Collapse
|
10
|
Untangling narcolepsy and diabetes: Pathomechanisms with eyes on therapeutic options. Brain Res 2019; 1718:212-222. [DOI: 10.1016/j.brainres.2019.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/23/2019] [Accepted: 04/13/2019] [Indexed: 12/14/2022]
|
11
|
Li W, Chang M, Qiu M, Chen Y, Zhang X, Li Q, Cui C. Exogenous obestatin decreases beta-cell apoptosis and alfa-cell proliferation in high fat diet and streptozotocin induced type 2 diabetic rats. Eur J Pharmacol 2019; 851:36-42. [PMID: 30776368 DOI: 10.1016/j.ejphar.2019.02.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 12/31/2022]
Abstract
Type 2 diabetes is a chronic metabolic disease characterized by progressive decrease of islet cell function. Delaying the process of islet failure remains a challenging goal in diabetes care. Previous studies have confirmed the role of obestatin, a gut peptide that belongs to ghrelin family, in the mediation of glucose metabolism. This study aimed to observe the long term effects of exogenous obestatin on glucose metabolism in type 2 diabetes rat model. Type 2 diabetic rat model was set up by high-fat diet (60%) followed by a low dose of streptozotocin intra-peritoneal injection. Exogenous obestatin was administered at a dose of 20 nmol/kg for 12 weeks by intraperitoneal injection. Compared to placebo group (saline intraperitoneal injection), obestatin treatment decreased the glucagon levels and increased the c-peptide levels. Furthermore, obestatin treatment led to a significant restoration of islet morphology, increasing insulin and reducing glucagon expressions. Apoptosis assay showed a reduction in the number of TUNEL positive-cells. The up-regulation of Akt and GSK3β in pancreas was confirmed by Real-Time PCR. These results demonstrated that obestatin might have a potential therapeutic relevance in improving islet cell function, including increasing insulin secretion through inhibiting beta cell apoptosis and decreasing glucagon secretion by inhibiting alfa cell proliferation in type 2 diabetes. In spite of its role in these phenomena, it is necessary to further discuss, especially regarding the role of obestatin on glucagon.
Collapse
Affiliation(s)
- Wensong Li
- Department of Infectious Disease, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Manli Chang
- Department of Laboratory Medicine, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Mingli Qiu
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Yangli Chen
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Xiaochen Zhang
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Qiang Li
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - Can Cui
- Department of Endocrinology and Metabolism, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
| |
Collapse
|
12
|
Khaleel EF, Abdel-Aleem GA. Obestatin protects and reverses nonalcoholic fatty liver disease and its associated insulin resistance in rats via inhibition of food intake, enhancing hepatic adiponectin signaling, and blocking ghrelin acylation. Arch Physiol Biochem 2019; 125:64-78. [PMID: 29429367 DOI: 10.1080/13813455.2018.1437638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This study investigated the ameliorative and protective effects of long-term obestatin administration (80 nmol/kg/ intraperitoneal injection (i.p.)) on the pathogenesis of high-fat diet (HFD) induced nonalcoholic fatty liver disease (NAFLD) in rats. Rats (n = 8/group) were divided as control, NAFLD, NAFLD + Simvastatin, NAFLD + obestatin, NAFLD then obestatin, and obestatin then NAFLD. Obestatin co -or post-therapy significantly reduced hepatomegaly and reversed hyperlipidemia, hepatic lipid accumulation, and insulin resistance (IR). Mechanistically obestatin treatments in these rats significantly prevented the increases in final body weights and food intake. Concomitantly, it enhanced circulatory adiponectin levels and hepatic signaling as evident by elevated hepatic protein levels of adiponectin receptors (adipoRII), carnitine palmitoyltransferase-1 (CPT-1), peroxisome proliferator-activated receptor- α (PPAR-α), and phosphor-AMPK (p-AMPK). In addition, obestatin enhanced total circulatory ghrelin levels and significantly increased deacylated ghrelin to acylated ghrelin (DAG/AG) ratio. These data suggest that obestatin reverses and protects against development or progression of NAFLD directly by modulating ghrelin and adiponectin signaling or indirectly by lowering food intake.
Collapse
Affiliation(s)
- Eman F Khaleel
- a Department of Medical Physiology, College of Medicine , King Khalid University , Abha , Saudi Arabia
- b Department of Medical Physiology, Faculty of Medicine , Cairo University , Cairo , Egypt
| | - Ghada A Abdel-Aleem
- c Department of Medical Biochemistry, College of Medicine , King Khalid University , Abha , Saudi Arabia
- d Department of Medical Biochemistry, Faculty of Medicine , Tanta University , Tanta , Egypt
| |
Collapse
|
13
|
Spexin: A novel regulator of adipogenesis and fat tissue metabolism. Biochim Biophys Acta Mol Cell Biol Lipids 2018; 1863:1228-1236. [DOI: 10.1016/j.bbalip.2018.08.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 01/31/2023]
|
14
|
Xiao M, Chen H, Wei C, Xu S, Ye Y. Therapeutic effect of catalpol on type 2 diabetic mice induced by STZ and high-fat diet and its possible mechanism. Int J Diabetes Dev Ctries 2018. [DOI: 10.1007/s13410-018-0685-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
15
|
Green BD, Grieve DJ. Biochemical properties and biological actions of obestatin and its relevence in type 2 diabetes. Peptides 2018; 100:249-259. [PMID: 29412827 DOI: 10.1016/j.peptides.2017.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 12/05/2017] [Accepted: 12/06/2017] [Indexed: 12/15/2022]
Abstract
Obestatin was initially discovered in rat stomach extract, and although it is principally produced in the gastric mucosa, it can be found throughout the gastrointestinal tract. This 23-amino acid C-terminally amidated peptide is derived from preproghrelin and has been ascribed a wide range of metabolic effects relevant to type 2 diabetes. Obestatin reportedly inhibits gastrointestinal motility, reduces food intake and lowers body weight and improves lipid metabolism. Furthermore, it appears to exert actions on the pancreatic β-cell, most notably increasing β-cell mass and upregulating genes associated with insulin production and β-cell regeneration, with relevance to type 2 diabetes. It is becoming evident that obestatin also exerts pleiotropic effects on the cardiovascular system, possibly modulating blood pressure, endothelial function and triggering cardioprotective mechanisms, which may be important in determining cardiovascular outcomes in type 2 diabetes. Furthermore, it seems that like other gut peptides obestatin has neuroprotective properties. This review examines the biochemical properties of the obestatin peptide (its structure, sequence, stability and distribution) and the candidate receptors through which it may act. It provides a balanced examination of the reported pancreatic and extrapancreatic actions of obestatin and evaluates its potential relevance with respect to diabetes therapy, together with discussion of direct evidence linking alterations in obestatin signalling with obesity/diabetes and other diseases.
Collapse
Affiliation(s)
- Brian D Green
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, BT9 5BN, UK.
| | - David J Grieve
- Centre for Experimental Medicine, Queen's University Belfast, Belfast, BT9 7AE, UK
| |
Collapse
|
16
|
Liu Y, Xing YX, Gao XY, Kuang HY, Zhang J, Liu R. Obestatin prevents H 2O 2-induced damage through activation of TrkB in RGC-5 cells. Biomed Pharmacother 2017; 97:1061-1065. [PMID: 29136785 DOI: 10.1016/j.biopha.2017.11.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 11/03/2017] [Accepted: 11/03/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUD In the early stage of diabetic retinopathy, the damage of retinal ganglion cells already exists, promoting the development of the disease. The aim of this study was to investigate the protective role and the mechanisms of obestatin against H2O2-induced damage in RGC-5 cells. METHODS RGC-5 cells were incubated with various concentrations of obestatin for 24h before H2O2 added. The survival rates of RGC-5 were measured by MTT assay. The expression of apoptosis-related proteins and TrkB pathway-related proteins were detected by Western blot analysis. RESULTS Our data showed that H2O2 evidently decreased the survival rate of RGC-5 cells. However, obestatin pretreatment reversed the decreased activity. Moreover, obestatin effectively increased the expression of Bcl-2 and decreased the expression of Bax. In addition, obestatin potentially plays a role in protecting RGC-5 by activating of TrkB. Obestatin notablely increased the phosphorylation of TrkB, AKT and ERK1/2. All these effects of obestatin can be inhibited by GLP-1R antagonist exendin (9-39). CONCLUSIONS Obestatin prevents H2O2-induced damage in RGC-5 cells by activating TrkB pathway. Moreover, GLP-1R is closely related to the function of obestatin in RGC-5 cells.
Collapse
Affiliation(s)
- Yang Liu
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Yue-Xian Xing
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Xin-Yuan Gao
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Hong-Yu Kuang
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Jing Zhang
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Rong Liu
- Department of Endocrinology, The First Clinical Hospital of Harbin Medical University, Harbin, 150001, China.
| |
Collapse
|