1
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Chen G, Sun Y, Yushan D, Shaerbayi N, Zhang H, He H, Jin Y, Chen L. Identification and Characterization of Chemical Constituents from Ammopiptanthus nanus Stem and Their Metabolites in Rats by UHPLC-Q-TOF-MS/MS. PLANTA MEDICA 2024; 90:138-153. [PMID: 37774754 DOI: 10.1055/a-2184-1134] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Ammopiptanthus nanus as a Kirgiz medicine is widely used for the treatment of frostbite and chronic rheumatoid arthritis. However, due to a lack of systematic research on the chemical components of A. nanus and their metabolites, the bioactive components in it remain unclear. Herein, a reliable strategy based on UHPLC-Q-TOF-MS/MS was established to comprehensively analyze the chemical components and their metabolites in vivo. In total, 59 compounds were identified from A. nanus stem extract, among which 14 isoflavones, 10 isoprenylated isoflavones, 4 polyhydroxy flavonoids, 9 alkaloids and 1 polyol were characterized for the first time. After oral administration of A. nanus stem extract, 30 prototype constituents and 28 metabolites (12 phase I and 16 phase II metabolites) were speculated on and identified in rat serum, urine and feces. Furthermore, the metabolic pathways of the chemical components were systematically analyzed and proposed. In conclusion, the chemical components from A. nanus stem and their metabolites in vivo were first studied, which may provide useful chemical information for further study on the effective material basis and pharmacological mechanism of A. nanus.
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Affiliation(s)
- Guanru Chen
- School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Yanpei Sun
- School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Dilnur Yushan
- People's Hospital of Kizilsu Kirgiz Autonomous Prefecture, Atushi, Xinjiang, China
| | | | - Hongjuan Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Hongliang He
- Department of Pharmacy, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yang Jin
- School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Lina Chen
- School of Pharmacy, Nanjing Medical University, Nanjing, China
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2
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Hu L, Zhang R, Wu J, Feng C, Kong L. Sequoyitol Alleviates High Glucose-Induced Inflammation, Oxidative Stress and Apoptosis of Retina Epithelial Cells. J BIOMATER TISS ENG 2021. [DOI: 10.1166/jbt.2021.2636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Diabetic retinopathy (DR) is a serious microvascular complication of diabetes, contributing to visual impairment and blindness. Sequoyitol (Seq), a form of inositol derivatives, has been demonstrated to be a therapeutic potential for diabetes and diabetic nephropathy. The aim of this
study is to explore the effects of Seq on DR. ARPE-19 cells were cultured in high glucose (HG) condition to simulate DR in vitro. Seq (1,10 and 20 µM) was applied for treatment. CCK-8 assay was performed to detect cell viability. Flow cytometry analysis was conducted to
determine cell apoptosis rate. The production level of inflammatory cytokines and oxidative stress-related factors were determined using their commercial kits. The protein expressions of corresponding genes were detected using western blotting. The results revealed that Seq significantly increased
cell viability and protein expression of PCNA and Ki67 which were decreased after HG induction. HG promoted cell apoptosis by decreasing protein expression of Bcl-2 and increasing protein expression of Bax and cleaved caspase-3, which was then reversed by Seq treatment. Besides, Seq abolished
the promoting effects of HG on the production of pro-inflammatory cytokines and oxidative stress-related factors. Furthermore, Seq suppressed the promoting effect of HG on the activation of NF-κB signaling by inhibiting phosphorylation of kBa and NF-κB nucleus translocation.
These results indicated that Seq might protect ARPE-19 cells against HG-induced cell viability, apoptosis, inflammation and oxidative stress by regulating NF-κB signaling, providing evidence for the potential application of Seq in the therapy of DR.
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Affiliation(s)
- Liping Hu
- Department of Fundus Ophthalmology, Aier Eye Hospital of Wuhan University Wuhan, Hubei, 430063, China
| | - Rui Zhang
- Department of Fundus Ophthalmology, Aier Eye Hospital of Wuhan University Wuhan, Hubei, 430063, China
| | - Jianhua Wu
- Department of Fundus Ophthalmology, Aier Eye Hospital of Wuhan University Wuhan, Hubei, 430063, China
| | - Chao Feng
- Department of Fundus Ophthalmology, Aier Eye Hospital of Wuhan University Wuhan, Hubei, 430063, China
| | - Li Kong
- Department of Ophthalmology, Chongqing Aier Eye Hospital, Chongqing, 400020, China
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3
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Owczarczyk-Saczonek A, Czerwińska J, Wygonowska E, Kasprowicz-Furmańczyk M, Placek W. D-chiro-inositol as a treatment in plaque psoriasis: A randomized placebo-controlled clinical trial. Dermatol Ther 2020; 34:e14538. [PMID: 33188584 DOI: 10.1111/dth.14538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/21/2020] [Accepted: 11/04/2020] [Indexed: 12/18/2022]
Abstract
Cyclitols are widely available natural sugars which do not exert toxic effects. Their anti-inflammatory and antioxidant properties may be used in the treatment of psoriasis. The aim of this placebo-controlled, double-blind study was to evaluate the clinical effects of D-chiro-inositol (DCI) in mild plaque psoriasis (46 psoriatic patients and 10 healthy volunteers). Three stable psoriatic plaques were selected for evaluation in every patient. Different samples were applied on each lesion twice a day: vehiculum without an active agent, containing 1% DCI and 0.25% DCI. The lesions were assessed using the PSI, VAS scale, and the objective measurement of hydration, transepidermal water loss (TEWL), elasticity, and thickness (DermaLab Combo) at 0, 3, and 6 weeks. PSI and VAS were improved in all groups without significant statistical differences. 1% DCI sample presented the highest statistically significant increase in the hydration of 50%, but it was still significantly lower than in healthy controls. TEWL increased for 1% DCI, which was a statistically significant difference compared to 0.25% DCI and still higher than in controls. An improvement in elasticity was observed in all lesions-it was statistically significant for 1% DCI. The thickness of the lesion decreased for 1% DCI, but the change was not statistically significant. Subepidermal low-echogenic band showed a decreasing tendency in all groups, but it was not statistically significant. Favorable 1% DCI sample results indicate that it may be used as an adjuvant to the local treatment of psoriasis.
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Affiliation(s)
- Agnieszka Owczarczyk-Saczonek
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, The University of Warmia and Mazury, Olsztyn, Poland
| | - Joanna Czerwińska
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, The University of Warmia and Mazury, Olsztyn, Poland
| | - Ewa Wygonowska
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, The University of Warmia and Mazury, Olsztyn, Poland
| | - Marta Kasprowicz-Furmańczyk
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, The University of Warmia and Mazury, Olsztyn, Poland
| | - Waldemar Placek
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, The University of Warmia and Mazury, Olsztyn, Poland
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López-Gambero AJ, Sanjuan C, Serrano-Castro PJ, Suárez J, Rodríguez de Fonseca F. The Biomedical Uses of Inositols: A Nutraceutical Approach to Metabolic Dysfunction in Aging and Neurodegenerative Diseases. Biomedicines 2020; 8:biomedicines8090295. [PMID: 32825356 PMCID: PMC7554709 DOI: 10.3390/biomedicines8090295] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 02/05/2023] Open
Abstract
Inositols are sugar-like compounds that are widely distributed in nature and are a part of membrane molecules, participating as second messengers in several cell-signaling processes. Isolation and characterization of inositol phosphoglycans containing myo- or d-chiro-inositol have been milestones for understanding the physiological regulation of insulin signaling. Other functions of inositols have been derived from the existence of multiple stereoisomers, which may confer antioxidant properties. In the brain, fluctuation of inositols in extracellular and intracellular compartments regulates neuronal and glial activity. Myo-inositol imbalance is observed in psychiatric diseases and its use shows efficacy for treatment of depression, anxiety, and compulsive disorders. Epi- and scyllo-inositol isomers are capable of stabilizing non-toxic forms of β-amyloid proteins, which are characteristic of Alzheimer’s disease and cognitive dementia in Down’s syndrome, both associated with brain insulin resistance. However, uncertainties of the intrinsic mechanisms of inositols regarding their biology are still unsolved. This work presents a critical review of inositol actions on insulin signaling, oxidative stress, and endothelial dysfunction, and its potential for either preventing or delaying cognitive impairment in aging and neurodegenerative diseases. The biomedical uses of inositols may represent a paradigm in the industrial approach perspective, which has generated growing interest for two decades, accompanied by clinical trials for Alzheimer’s disease.
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Affiliation(s)
- Antonio J. López-Gambero
- Departamento de Biología Celular, Genética y Fisiología, Campus de Teatinos s/n, Universidad de Málaga, Andalucia Tech, 29071 Málaga, Spain;
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario Regional de Málaga, 29010 Málaga, Spain
| | | | - Pedro Jesús Serrano-Castro
- UGC Neurología, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario Regional de Málaga, 29010 Málaga, Spain;
| | - Juan Suárez
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario Regional de Málaga, 29010 Málaga, Spain
- Correspondence: (J.S.); (F.R.d.F.); Tel.: +34-952614012 (J.S.)
| | - Fernando Rodríguez de Fonseca
- UGC Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Universitario Regional de Málaga, 29010 Málaga, Spain
- Correspondence: (J.S.); (F.R.d.F.); Tel.: +34-952614012 (J.S.)
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Park S, Lee G, Lee H, Hoang T, Chae H. Glucose-lowering effect of Gryllus bimaculatus powder on streptozotocin-induced diabetes through the AKT/mTOR pathway. Food Sci Nutr 2020; 8:402-409. [PMID: 31993166 PMCID: PMC6977414 DOI: 10.1002/fsn3.1323] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/26/2019] [Accepted: 06/13/2019] [Indexed: 12/19/2022] Open
Abstract
This study was carried out to elucidate the antidiabetic effects of Gryllus bimaculatus powder using a streptozotocin (STZ)-induced rat model of type I diabetes. Administration of the insect powder significantly rescued representative diabetes markers (i.e., insulin and C-peptide) in STZ-treated rats. Improved glucose tolerance test (GTT) and insulin tolerance test (ITT) results were also observed, indicating that Gryllus bimaculatus powder exerts antidiabetic effects. Gryllus bimaculatus powder administration rescued STZ-induced alterations in both islet morphology and insulin staining patterns. The extract increased antiapoptotic Bcl2 expression and decreased proapoptotic Bax and active caspase 3 expressions. In addition, the Gryllus bimaculatus powder supplementation enhanced AKT/mTOR pathway, a key marker of the state of anabolic metabolism, and its downstream effector, mTOR. Collectively, our results suggest that Gryllus bimaculatus contributes to the maintenance of pancreatic β-cell function and morphology against a diabetic state through the regulations against apoptosis and anabolic metabolism.
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Affiliation(s)
- Seon‐Ah Park
- Non‐Clinical Evaluation CenterBiomedical Research InstituteChonbuk National University HospitalJeonjuChonbukSouth Korea
| | - Geum‐Hwa Lee
- Non‐Clinical Evaluation CenterBiomedical Research InstituteChonbuk National University HospitalJeonjuChonbukSouth Korea
| | - Hwa‐Young Lee
- Non‐Clinical Evaluation CenterBiomedical Research InstituteChonbuk National University HospitalJeonjuChonbukSouth Korea
- Department of Pharmacology and Institute of New Drug DevelopmentSchool of MedicineChonbuk National UniversityJeonjuChonbukSouth Korea
| | - The‐Hiep Hoang
- Non‐Clinical Evaluation CenterBiomedical Research InstituteChonbuk National University HospitalJeonjuChonbukSouth Korea
- Department of Pharmacology and Institute of New Drug DevelopmentSchool of MedicineChonbuk National UniversityJeonjuChonbukSouth Korea
| | - Han‐Jung Chae
- Non‐Clinical Evaluation CenterBiomedical Research InstituteChonbuk National University HospitalJeonjuChonbukSouth Korea
- Department of Pharmacology and Institute of New Drug DevelopmentSchool of MedicineChonbuk National UniversityJeonjuChonbukSouth Korea
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Owczarczyk-Saczonek A, Lahuta LB, Ligor M, Placek W, Górecki RJ, Buszewski B. The Healing-Promoting Properties of Selected Cyclitols-A Review. Nutrients 2018; 10:nu10121891. [PMID: 30513929 PMCID: PMC6316775 DOI: 10.3390/nu10121891] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 11/19/2018] [Accepted: 11/29/2018] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Myo-inositol and its derivatives cyclitols play an important role in the processes of cell regulation, signal transduction, osmoregulation, and ion channel physiology, and are a component of the cell membrane. Free cyclitols present in food or released during the degradation of galactosyl cyclitols by bacteria (in digestive tract) show some physiological benefits. AIM The aim of this paper is to present and analyze the documented data about curative and healing properties of cyclitols. RESULTS AND DISCUSSION Cyclitols are well known compounds in the treatment of an accompanied diabetes insulin resistance, and also obesity and polycystic ovarian syndrome. d-chiro-Inositol deficiency exacerbates insulin resistance in the liver, muscles, and fat, while depletion of myo-inositol results in the development of diabetic complications. Cyclitols are successfully applied in treatment of polycystic ovarian syndrome, simultaneous are observed effective reducing of BMI, improving the hormonal profile, and increasing fertility. Moreover, cyclitols have anti-atherogenic, anti-oxidative, anti-inflammatory, and anti-cancer properties. CONCLUSION The properties of cyclitols may be a good therapeutic option in the reduction of metabolically induced inflammation. Due to well drugs tolerance and low toxicity of these compounds, cyclitols are recommend for pregnant women and also for children. Another advantage is their widespread presence and easy availability, which encourages their use in medicine.
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Affiliation(s)
- Agnieszka Owczarczyk-Saczonek
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, University of Warmia and Mazury in Olsztyn, 10-229 Olsztyn, Poland.
| | - Lesław Bernard Lahuta
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, 10-229 Olsztyn, Poland.
| | - Magdalena Ligor
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, 87-100 Torun, Poland.
| | - Waldemar Placek
- Department of Dermatology, Sexually Transmitted Diseases and Clinical Immunology, University of Warmia and Mazury in Olsztyn, 10-229 Olsztyn, Poland.
| | - Ryszard Józef Górecki
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, 10-229 Olsztyn, Poland.
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, 87-100 Torun, Poland.
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Bevilacqua A, Bizzarri M. Inositols in Insulin Signaling and Glucose Metabolism. Int J Endocrinol 2018; 2018:1968450. [PMID: 30595691 PMCID: PMC6286734 DOI: 10.1155/2018/1968450] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 10/03/2018] [Accepted: 11/07/2018] [Indexed: 12/25/2022] Open
Abstract
In the past decades, both the importance of inositol for human health and the complex interaction between glucose and inositol have been the subject of increasing consideration. Glucose has been shown to interfere with cellular transmembrane transport of inositol, inhibiting, among others, its intestinal absorption. Moreover, intracellular glucose is required for de novo biosynthesis of inositol through the inositol-3-phosphate synthase 1 pathway, while a few glucose-related metabolites, like sorbitol, reduce intracellular levels of inositol. Furthermore, inositol, via its major isomers myo-inositol and D-chiro-inositol, and probably some of its phosphate intermediate metabolites and correlated enzymes (like inositol hexakisphosphate kinase) participate in both insulin signaling and glucose metabolism by influencing distinct pathways. Indeed, clinical data support the beneficial effects exerted by inositol by reducing glycaemia levels and hyperinsulinemia and buffering negative effects of sustained insulin stimulation upon the adipose tissue and the endocrine system. Due to these multiple effects, myoIns has become a reliable treatment option, as opposed to hormonal stimulation, for insulin-resistant PCOS patients.
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Affiliation(s)
- Arturo Bevilacqua
- Department of Dynamic and Clinical Psychology, Sapienza University of Rome, via dei Marsi 78, 00185 Rome, Italy
- Center for Research in Neurobiology “Daniel Bovet” (CRiN), Sapienza University of Rome, 00185 Rome, Italy
| | - Mariano Bizzarri
- Department of Experimental Medicine, Systems Biology Group Lab, Sapienza University of Rome, via A. Scarpa 16, 00161 Rome, Italy
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Omotuyi OI, Nash O, Inyang OK, Ogidigo J, Enejoh O, Okpalefe O, Hamada T. Flavonoid-rich extract of Chromolaena odorata modulate circulating GLP-1 in Wistar rats: computational evaluation of TGR5 involvement. 3 Biotech 2018; 8:124. [PMID: 29450114 DOI: 10.1007/s13205-018-1138-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 01/29/2018] [Indexed: 12/18/2022] Open
Abstract
Chromolaena odorata is a major bio-resource in folkloric treatment of diabetes. In the present study, its anti-diabetic component and underlying mechanism were investigated. A library containing 140 phytocompounds previously characterized from C. odorata was generated and docked (Autodock Vina) into homology models of dipeptidyl peptidase (DPP)-4, Takeda-G-protein-receptor-5 (TGR5), glucagon-like peptide 1 (GLP1) receptor, renal sodium dependent glucose transporter (SGLUT)-1/2 and nucleotide-binding oligomerization domain (NOD) proteins 1&2. GLP-1 gene (RT-PCR) modulation and its release (EIA) by C. odorata were confirmed in vivo. From the docking result above, TGR5 was identified as a major target for two key C. odorata flavonoids (5,7-dihydroxy-6-4-dimethoxyflavanone and homoesperetin-7-rutinoside); sodium taurocholate and C. odorata powder included into the diet of the animals both raised the intestinal GLP-1 expression versus control (p < 0.05); When treated with flavonoid-rich extract of C. odorata (CoF) or malvidin, circulating GLP-1 increased by 130.7% in malvidin-treated subjects (0 vs. 45 min). CoF treatment also resulted in 128.5 and 275% increase for 10 and 30 mg/kg b.w., respectively. CONCLUSIONS The results of this study support that C. odorata flavonoids may modulate the expression of GLP-1 and its release via TGR5. This finding may underscore its anti-diabetic potency.
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Affiliation(s)
- Olaposi Idowu Omotuyi
- 1Center for Bio-Computing and Drug Development, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
| | - Oyekanmi Nash
- Phytomedicine Research Group, Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja, Nigeria
| | - Olumide Kayode Inyang
- 1Center for Bio-Computing and Drug Development, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
| | - Joyce Ogidigo
- Phytomedicine Research Group, Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja, Nigeria
| | - Ojochenemi Enejoh
- Phytomedicine Research Group, Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja, Nigeria
| | - Okiemute Okpalefe
- Phytomedicine Research Group, Center for Genomics Research and Innovation, National Biotechnology Development Agency, Abuja, Nigeria
| | - Tsuyoshi Hamada
- 3Advanced Computing Centre, Nagasaki University, Nagasaki, Japan
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Muscogiuri G, Palomba S, Laganà AS, Orio F. Inositols in the Treatment of Insulin-Mediated Diseases. Int J Endocrinol 2016; 2016:3058393. [PMID: 27688754 PMCID: PMC5027050 DOI: 10.1155/2016/3058393] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/01/2016] [Indexed: 02/06/2023] Open
Abstract
A growing body of research is currently focused on the role of inositol isomers and in particular myo-inositol (MYO-INS) and D-chiroinositol (DCI) in the treatment of insulin resistance states. Both isomers have been shown to exert insulin-mimetic action and to lower postprandial glucose. Further, insulin resistance-related diseases were associated to derangements in inositol metabolism. Thus, the aim of this review is to provide current evidence on the potential benefits of inositol isomers (MYO-INS and DCI) in the treatment of disease associated to insulin resistance such as polycystic ovary syndrome (PCOS), gestational diabetes, and metabolic syndrome. Finally, molecular insights into inositol insulin-sensitizing effects will be covered focusing on the possible role of inositol glycans as insulin second messengers.
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Affiliation(s)
- Giovanna Muscogiuri
- IOS and Coleman Medicina Futura Medical Center, Centro Direzionale, 80143 Naples, Italy
| | - Stefano Palomba
- Department of Obstetrics and Gynecology, Arcispedale Santa Maria Nuova-IRCCS, 42123 Reggio Emilia, Italy
| | - Antonio Simone Laganà
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood “G. Barresi”, University of Messina, 98125 Messina, Italy
| | - Francesco Orio
- Endocrinology, Department of Sports Science and Wellness, “Parthenope” University of Naples, 80133 Naples, Italy
- Fertility Techniques SSD, “S. Giovanni di Dio e Ruggi d'Aragona” University Hospital, CMSO (Centro Medico Specialistico Orio), 84131 Salerno, Italy
- *Francesco Orio:
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Stanford KI, Middelbeek RJW, Townsend KL, Lee MY, Takahashi H, So K, Hitchcox KM, Markan KR, Hellbach K, Hirshman MF, Tseng YH, Goodyear LJ. A novel role for subcutaneous adipose tissue in exercise-induced improvements in glucose homeostasis. Diabetes 2015; 64:2002-14. [PMID: 25605808 PMCID: PMC4439563 DOI: 10.2337/db14-0704] [Citation(s) in RCA: 225] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 01/10/2015] [Indexed: 01/10/2023]
Abstract
Exercise training improves whole-body glucose homeostasis through effects largely attributed to adaptations in skeletal muscle; however, training also affects other tissues, including adipose tissue. To determine whether exercise-induced adaptations to adipose tissue contribute to training-induced improvements in glucose homeostasis, subcutaneous white adipose tissue (scWAT) from exercise-trained or sedentary donor mice was transplanted into the visceral cavity of sedentary recipients. Remarkably, 9 days post-transplantation, mice receiving scWAT from exercise-trained mice had improved glucose tolerance and enhanced insulin sensitivity compared with mice transplanted with scWAT from sedentary or sham-treated mice. Mice transplanted with scWAT from exercise-trained mice had increased insulin-stimulated glucose uptake in tibialis anterior and soleus muscles and brown adipose tissue, suggesting that the transplanted scWAT exerted endocrine effects. Furthermore, the deleterious effects of high-fat feeding on glucose tolerance and insulin sensitivity were completely reversed if high-fat-fed recipient mice were transplanted with scWAT from exercise-trained mice. In additional experiments, voluntary exercise training by wheel running for only 11 days resulted in profound changes in scWAT, including the increased expression of ∼1,550 genes involved in numerous cellular functions including metabolism. Exercise training causes adaptations to scWAT that elicit metabolic improvements in other tissues, demonstrating a previously unrecognized role for adipose tissue in the beneficial effects of exercise on systemic glucose homeostasis.
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Affiliation(s)
- Kristin I Stanford
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Roeland J W Middelbeek
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Kristy L Townsend
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Min-Young Lee
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Hirokazu Takahashi
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Kawai So
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Kristen M Hitchcox
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Kathleen R Markan
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Katharina Hellbach
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Michael F Hirshman
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Yu-Hua Tseng
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Laurie J Goodyear
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
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Abnormalities in myo-inositol metabolism associated with type 2 diabetes in mice fed a high-fat diet: benefits of a dietary myo-inositol supplementation. Br J Nutr 2015; 113:1862-75. [PMID: 25990651 DOI: 10.1017/s000711451500121x] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We previously reported that a chronic supplementation with myo-inositol (MI) improved insulin sensitivity and reduced fat accretion in mice. We then tested the potency of such dietary intervention in the prevention of insulin resistance in C57BL/6 male mouse fed a high-fat diet (HFD). In addition, some abnormalities in inositol metabolism were reported to be associated with insulin resistance in several animal and human studies. We then investigated the presence of such anomalies (i.e. inosituria and an inositol intra-tissue depletion) in this diet-induced obesity (DIO) mouse model, as well as the potential benefit of a MI supplementation for inositol intra-tissue deficiency correction. HFD (60 % energy from fat) feeding was associated with inosituria and inositol intra-tissue depletion in the liver and kidneys. MI supplementation (0·58 mg/g per d) restored inositol pools in kidneys (partially) and liver (fully). HFD feeding for 4 months induced ectopic lipid redistribution to liver and muscles, fasting hyperglycaemia and hyperinsulinaemia, insulin resistance and obesity that were not prevented by MI supplementation, despite a significant improvement in insulin sensitivity parameter K insulin tolerance test and a reduction in white adipose tissue (WAT) mass ( - 17 %, P< 0·05). MI supplementation significantly reduced fatty acid synthase activity in epididymal WAT, which might explain its beneficial, but modest, effect on WAT accretion in HFD-fed mice. Finally, we found some abnormalities in inositol metabolism in association with a diabetic phenotype (i.e. insulin resistance and fasting hyperglycaemia) in a DIO mouse model. Dietary MI supplementation was efficient in the prevention of inositol intra-tissue depletion, but did not prevent insulin resistance or obesity efficiently in this mouse model.
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Pereira AC, Pereira ABD, Moreira CCL, Botion LM, Lemos VS, Braga FC, Cortes SF. Hancornia speciosa Gomes (Apocynaceae) as a potential anti-diabetic drug. JOURNAL OF ETHNOPHARMACOLOGY 2015; 161:30-35. [PMID: 25500300 DOI: 10.1016/j.jep.2014.11.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/24/2014] [Accepted: 11/30/2014] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Hancornia speciosa Gomes are traditionally used to treat diabetes in Brazil. The aim of the study is to evaluate the potential anti-diabetic effect of Hancornia speciosa extract and derived fractions. MATERIALS AND METHODS The ethanolic extract from Hancornia speciosa leaves and chromatographic fractions thereof were evaluated on α-glucosidase assay, on hyperglycemic effect and glucose uptake. The chemical composition of the extract and its most active fraction was investigated by ESI-LC-MS. RESULTS The ethanolic extract and derived fractions inhibited α-glucosidase in vitro. However, only the crude extract and the dichloromethane fraction inhibited the hyperglycemic effect induced by starch or glucose. Both the extract and dichloromethane fraction were also able to increase glucose uptake in adipocytes. Bornesitol, quinic acid, and chorogenic acid were identified in the extract, along with flavonoid glycosides, whereas the dichloromethane fraction is majorly composed by esters of lupeol and/or α/β-amirin. CONCLUSIONS Hancornia speciosa has a potential anti-diabetic effect through a mechanism dependent on inhibition of α-glucosidase and increase on glucose uptake. These results give support to the use on traditional medicine of this medicinal plant.
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Affiliation(s)
- Aline C Pereira
- Laboratório de Farmacologia Cardiovascular, Departamento de Farmacologia, Instituto de Ciências Biológicas (ICB), Brazil
| | | | - Carolina C L Moreira
- Laboratório de Metabolismo Celular, Departamento de Fisiologia e Biofísica, ICB, Brazil
| | - Leida M Botion
- Laboratório de Metabolismo Celular, Departamento de Fisiologia e Biofísica, ICB, Brazil
| | - Virgínia S Lemos
- Laboratório de Fisiologia Cardiovascular, Departamento de Fisiologia e Biofísica, ICB, Universidade Federal de Minas Gerais, UFMG, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Fernão C Braga
- Laboratório de Fitoquímica, Faculdade de Farmácia, Brazil
| | - Steyner F Cortes
- Laboratório de Farmacologia Cardiovascular, Departamento de Farmacologia, Instituto de Ciências Biológicas (ICB), Brazil.
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Li XW, Liu Y, Hao W, Yang JR. Sequoyitol ameliorates diabetic nephropathy in diabetic rats induced with a high-fat diet and a low dose of streptozotocin. Can J Physiol Pharmacol 2014; 92:405-17. [PMID: 24784471 DOI: 10.1139/cjpp-2013-0307] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Sequoyitol decreases blood glucose, improves glucose intolerance, and enhances insulin signaling in ob/ob mice. The aim of this study was to investigate the effects of sequoyitol on diabetic nephropathy in rats with type 2 diabetes mellitus and the mechanism of action. Diabetic rats, induced with a high-fat diet and a low dose of streptozotocin, and were administered sequoyitol (12.5, 25.0, and 50.0 mg·(kg body mass)−1·d−1) for 6 weeks. The levels of fasting blood glucose (FBG), serum insulin, blood urea nitrogen (BUN), and serum creatinine (SCr) were measured. The expression levels of p22phox, p47phox, NF-κB, and TGF-β1 were measured using immunohistochemisty, real-time PCR, and (or) Western blot. The total antioxidative capacity (T-AOC), as well as the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) were also determined. The results showed that sequoyitol significantly decreased FBG, BUN, and SCr levels, and increased the insulin levels in diabetic rats. The level of T-AOC was significantly increased, while ROS and MDA levels and the expression of p22phox, p47phox, NF-κB, and TGF-β1 were decreased with sequoyitol treatment both in vivo and in vitro. These results suggested that sequoyitol ameliorates the progression of diabetic nephropathy in rats, as induced by a high-fat diet and a low dose of streptozotocin, through its glucose-lowering effects, antioxidant activity, and regulation of TGF-β1 expression.
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Affiliation(s)
- Xian-Wei Li
- Department of Pharmacology, Third-Grade Pharmacology Laboratory of State Administration of Traditional Chinese Medicine, Wannan Medical College, Wen-Chang West Road 22#, Wuhu 241002, China
| | - Yan Liu
- Department of Pharmacology, Third-Grade Pharmacology Laboratory of State Administration of Traditional Chinese Medicine, Wannan Medical College, Wen-Chang West Road 22#, Wuhu 241002, China
| | - Wei Hao
- Department of Pharmacology, Third-Grade Pharmacology Laboratory of State Administration of Traditional Chinese Medicine, Wannan Medical College, Wen-Chang West Road 22#, Wuhu 241002, China
| | - Jie-Ren Yang
- Department of Pharmacology, Third-Grade Pharmacology Laboratory of State Administration of Traditional Chinese Medicine, Wannan Medical College, Wen-Chang West Road 22#, Wuhu 241002, China
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Chen J, Liang L, Zhan L, Zhou Y, Zheng L, Sun X, Gong J, Sui H, Jiang R, Zhang F, Zhang L. ZiBuPiYin recipe protects db/db mice from diabetes-associated cognitive decline through improving multiple pathological changes. PLoS One 2014; 9:e91680. [PMID: 24614172 PMCID: PMC3948870 DOI: 10.1371/journal.pone.0091680] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 02/14/2014] [Indexed: 11/18/2022] Open
Abstract
Multiple organ systems, including the brain, which undergoes changes that may increase the risk of cognitive decline, are adversely affected by diabetes mellitus (DM). Here, we demonstrate that type 2 diabetes mellitus (T2DM) db/db mice exhibited hippocampus-dependent memory impairment, which might associate with a reduction in dendritic spine density in the pyramidal neurons of brain, Aβ1-42 deposition in the prefrontal cortex (PFC) and hippocampus, and a decreased expression of neurostructural proteins including microtubule-associated protein (MAP2), a marker of dendrites, and postsynaptic density 95 (PSD95), a marker of excitatory synapses. To investigate the effects of the ZiBuPiYin recipe (ZBPYR), a traditional Chinese medicine recipe, on diabetes-related cognitive decline (DACD), db/db mice received daily administration of ZBPYR over an experimental period of 6 weeks. We then confirmed that ZBPYR rescued learning and memory performance impairments, reversed dendritic spine loss, reduced Aβ1-42 deposition and restored the expression levels of MAP2 and PSD95. The present study also revealed that ZBPYR strengthened brain leptin and insulin signaling and inhibited GSK3β overactivity, which may be the potential mechanism or underlying targets of ZBPYR. These findings conclude that ZBPYR prevents DACD, most likely by improving dendritic spine density and attenuating brain leptin and insulin signaling pathway injury. Our findings provide further evidence for the effects of ZBPYR on DACD.
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Affiliation(s)
- Jing Chen
- The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Lina Liang
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Libin Zhan
- The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Yan Zhou
- The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Luping Zheng
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Xiaoxin Sun
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Jin Gong
- Anatomy department of Dalian Medical University, Dalian, Liaoning, China
| | - Hua Sui
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Rujiao Jiang
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Fuliang Zhang
- Public Health department of Dalian Medical University, Dalian, Liaoning, China
| | - Lin Zhang
- College (Institute) of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
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Croze ML, Soulage CO. Potential role and therapeutic interests of myo-inositol in metabolic diseases. Biochimie 2013; 95:1811-27. [PMID: 23764390 DOI: 10.1016/j.biochi.2013.05.011] [Citation(s) in RCA: 351] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 05/30/2013] [Indexed: 02/08/2023]
Abstract
Several inositol isomers and in particular myo-inositol (MI) and D-chiro-inositol (DCI), were shown to possess insulin-mimetic properties and to be efficient in lowering post-prandial blood glucose. In addition, abnormalities in inositol metabolism are associated with insulin resistance and with long term microvascular complications of diabetes, supporting a role of inositol or its derivatives in glucose metabolism. The aim of this review is to focus on the potential benefits of a dietary supplement of myo-inositol, by far the most common inositol isomer in foodstuffs, in human disorders associated with insulin resistance (polycystic ovary syndrome, gestational diabetes mellitus or metabolic syndrome) or in prevention or treatment of some diabetic complications (neuropathy, nephropathy, cataract). The relevance of such a nutritional strategy will be discussed for each context on the basis of the clinical and/or animal studies. The dietary sources of myo-inositol and its metabolism from its dietary uptake to its renal excretion will be also covered in this review. Finally, the actual insights into inositol insulin-sensitizing effects will be addressed and in particular the possible role of inositol glycans as insulin second messengers.
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Affiliation(s)
- Marine L Croze
- Université de Lyon, INSA de Lyon, CarMeN, INSERM U1060, Univ Lyon-1, F-69621 Villeurbanne, France.
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