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Aleidi SM, Shayeb E, Bzour J, Abu-Rish EY, Hudaib M, Al Alawi S, Bustanji Y. Serum level of insulin-like growth factor-I in type 2 diabetic patients: impact of obesity. Horm Mol Biol Clin Investig 2019; 39:hmbci-2019-0015. [PMID: 31398142 DOI: 10.1515/hmbci-2019-0015] [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: 04/06/2019] [Accepted: 07/11/2019] [Indexed: 01/02/2023]
Abstract
Background Insulin-like growth factor-I (IGF-I) is homologous to proinsulin and possesses glucose reducing activity. The association between the level of IGF-I and diabetes has been highlighted. However, this association is controversial due to the influence of different factors including obesity. The aim of the study was to evaluate serum level of IGF-I in type 2 diabetic patients compared to control subjects. Materials and methods A cross-sectional study involving 100 participants was conducted. Serum levels of IGF-I were measured using enzyme-linked immunosorbent assay (ELISA) and the fasting plasma glucose (FPG) levels were measured using the glucose oxidase method. Results IGF-I levels in the diabetic patients were significantly lower than in non-diabetic control subjects (105.13 ± 6.34 vs. 159.96 ± 9.62 ng/mL, p < 0.0001). Among the diabetic group, there was no significant difference in IGF-I levels between obese diabetic patients and non-obese diabetic patients, p = 0.18. Similarly, among the non-diabetic group, a non-significant difference was found in IGF-I levels between obese non-diabetic and non-obese non-diabetic subjects, p = 0.156. However, among the obese group, obese diabetic patients had significantly lower IGF-I serum levels compared to obese non-diabetic subjects (112.07 ± 7.97 vs. 147.07 ± 13.05 ng/mL, p = 0.02). Furthermore, among the non-obese group, the non-obese diabetic patients had significantly lower IGF-I serum levels compared to the non-obese non-diabetic subjects (91.66 ± 9.93 vs. 171.86 ± 13.86 ng/mL, p < 0.0001). No significant associations were observed between IGF-I level and any of the age, gender, body mass index (BMI), FPG levels, or the duration of diabetes. Conclusions Type 2 diabetes mellitus is associated with lower levels of IGF-I regardless to the presence or absence of obesity.
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Affiliation(s)
- Shereen M Aleidi
- The University of Jordan, Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, 11942Amman, Jordan
| | - Eman Shayeb
- The University of Jordan, Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, 11942Amman, Jordan
| | | | - Eman Y Abu-Rish
- The University of Jordan, Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, 11942Amman, Jordan
| | - Mohammad Hudaib
- Al Ain University of Science and Technology, Collage of pharmacy , 112612,Abu Dhabi, UAE.,The University of Jordan, pharmaceutical science,school of pharmacy, Amman, Jordan
| | - Sundus Al Alawi
- The University of Jordan, Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, 11942Amman, Jordan
| | - Yasser Bustanji
- The University of Jordan, Department of Biopharmaceutics and Clinical Pharmacy, School of Pharmacy, 11942Amman, Jordan.,Hamdi Mango Center for Scientific Research, Amman, Jordan
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Chen J, Song H. Protective potential of epigallocatechin-3-gallate against benign prostatic hyperplasia in metabolic syndrome rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 45:315-320. [PMID: 27348728 DOI: 10.1016/j.etap.2016.06.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/08/2016] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
Epigallocatechin-3-gallate (EGCG) is a major catechin in green tea with functions of antioxidant, anti-proliferative, anti-inflammatory and attenuating metabolic syndrome. In this study, rat model of benign prostatic hyperplasia (BPH) accompanied with metabolic syndrome was induced by fed on high-fat diet for 12 weeks combined with testosterone injection (10mg/kg/d) from 9th to 12th weeks. EGCG was orally given from 9th to 12th weeks. Finally, the levels of glucose, total cholesterol, triglyceride, prostate weight, insulin-like growth factors (IGFs), inflammatory cytokines, antioxidant enzymes, and prostatic expression of IGF binding protein-3 (IGFBP-3) and peroxisome proliferator activated receptors (PPARs) were evaluated. It was found that EGCG significantly decreased the levels of glucose, total cholesterol, triglyceride, IGFs, and inflammatory cytokines, normalized the activities of antioxidant enzymes, as well as increased the prostatic expression of IGFBP-3 and PPARs. These results indicated that EGCG was able to exert anti-BPH activities in metabolic syndrome rats.
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Affiliation(s)
- Jinglou Chen
- Department of Pharmacy, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongping Song
- Department of Pharmacy, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Mendler M, Schlotterer A, Ibrahim Y, Kukudov G, Fleming T, Bierhaus A, Riedinger C, Schwenger V, Herzig S, Hecker M, Tyedmers J, Nawroth PP, Morcos M. daf-16/FOXO and glod-4/glyoxalase-1 are required for the life-prolonging effect of human insulin under high glucose conditions in Caenorhabditis elegans. Diabetologia 2015; 58:393-401. [PMID: 25322843 DOI: 10.1007/s00125-014-3415-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 09/19/2014] [Indexed: 10/24/2022]
Abstract
AIMS/HYPOTHESIS The aim of this study was to determine the protective effects of human insulin and its analogues, B28Asp human insulin (insulin aspart) and B29Lys(ε-tetradecanoyl),desB30 human insulin (insulin detemir), against glucose-induced lifespan reduction and neuronal damage in the model organism Caenorhabditis elegans and to elucidate the underlying mechanisms. METHODS Nematodes were cultivated under high glucose (HG) conditions comparable with the situation in diabetic patients and treated with human insulin and its analogues. Lifespan was assessed and neuronal damage was evaluated with regard to structural and functional impairment. Additionally, the activity of glyoxalase-1 and superoxide dismutase (SOD) and the formation of reactive oxygen species (ROS) and AGEs were determined. RESULTS Insulin and its analogues reversed the life-shortening effect of HG conditions and prevented the glucose-induced neuronal impairment. Insulin treatment under HG conditions was associated with reduced concentration of glucose, as well as a reduced formation of ROS and AGEs, and increased SOD activity. These effects were dependent on the Forkhead box O (FOXO) homologue abnormal dauer formation (DAF)-16. Furthermore, glyoxalase-1 activity, which was impaired under HG conditions, was restored by human insulin. This was essential for the insulin-induced lifespan extension under HG conditions, as no change in lifespan was observed following either suppression or overexpression of glyoxalase-1. CONCLUSIONS/INTERPRETATION Human insulin and its analogues prevent the reduction in lifespan and neuronal damage caused by HG conditions. The effect of human insulin is mediated by a daf-2/insulin receptor and daf-16/FOXO-dependent pathway and is mediated by upregulation of detoxifying mechanisms.
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Affiliation(s)
- Michael Mendler
- Department of Medicine 1 and Clinical Chemistry, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany,
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Lewitt MS, Dent MS, Hall K. The Insulin-Like Growth Factor System in Obesity, Insulin Resistance and Type 2 Diabetes Mellitus. J Clin Med 2014; 3:1561-74. [PMID: 26237614 PMCID: PMC4470198 DOI: 10.3390/jcm3041561] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/21/2014] [Accepted: 12/05/2014] [Indexed: 12/11/2022] Open
Abstract
The insulin-like growth factor (IGF) system, acting in concert with other hormone axes, is important in normal metabolism. In obesity, the hyperinsulinaemia that accompanies peripheral insulin resistance leads to reduced growth hormone (GH) secretion, while total IGF-I levels are relatively unchanged due to increased hepatic GH sensitivity. IGF-binding protein (IGFBP)-1 levels are suppressed in relation to the increase in insulin levels in obesity and low levels predict the development of type 2 diabetes several years later. Visceral adiposity and hepatic steatosis, along with a chronic inflammation, contribute to the IGF system phenotype in individuals with metabolic syndrome and type 2 diabetes mellitus, including changes in the normal inverse relationship between IGFBP-1 and insulin, with IGFBP-1 concentrations that are inappropriately normal or elevated. The IGF system is implicated in the vascular and other complications of these disorders and is therefore a potential therapeutic target.
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Affiliation(s)
- Moira S Lewitt
- School of Health Nursing & Midwifery, the University of the West of Scotland, Paisley PA1 2BE, UK.
| | - Mairi S Dent
- School of Health Nursing & Midwifery, the University of the West of Scotland, Paisley PA1 2BE, UK.
| | - Kerstin Hall
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE171 76, Sweden.
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Beasley JM, Wedick NM, Rajpathak SN, Xue X, Holmes MD, Gunter MJ, Wylie-Rosett J, Rohan TE, Pollak M, Kaplan RC, Hu FB, Sun Q, Strickler HD. Circulating IGF-axis protein levels and their relation with levels of plasma adipocytokines and macronutrient consumption in women. Growth Horm IGF Res 2014; 24:142-9. [PMID: 24888819 PMCID: PMC4190839 DOI: 10.1016/j.ghir.2014.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/28/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Circulating free insulin-like growth factor (IGF)-I and its binding proteins, most notably, IGFBP-1 and IGFBP-2, have been prospectively associated with incident type 2 diabetes in women. However, little is known regarding the factors that may influence these IGF-axis protein levels. The aim is to study the relation of IGF-axis protein levels with adipcytokines, macronutrient consumption, and other factors related to diabetes. DESIGN Fasting plasma from 558 controls enrolled in a nested case-control study within the Nurses' Health Study of incident type 2 diabetes in women was tested for: IGF-axis proteins (free and total IGF-I, IGFBP-1, IGFBP-2, IGFBP-3), adipocytokines (leptin, adiponectin, resistin), soluble leptin receptor (sOB-R), inflammatory factors (IL-18 and C-reactive protein (CRP)), insulin, and glycated hemoglobin (HbA1C). RESULTS In multivariate models, each 1% increase in sOB-R (mean 34.9ng/mL, standard deviation (SD) ±11.3) was associated with -0.20% total IGF-I (P=0.0003) and -0.42% free IGF-I (P=0.002), as well as 0.73% higher IGFBP-1 (P<0.0001) and 0.27% IGFBP-2 (P=0.003). For example, a one SD change from the mean sOB-R level was associated with 11% lower free IGF-I. Insulin levels (mean 6.8μU/mL±5.3) were inversely and adiponectin (mean 18.3μg/mL±7.4) positively associated with IGFBP-1 and IGFBP-2 (all P<0.01). Consumption of dairy protein, monounsaturated fats, and saturated fats, was also correlated with IGF-axis protein levels (all P<0.05). CONCLUSIONS Several molecular factors and macronutrients were independently associated with plasma IGF-axis protein levels. Which of these, if any, reflect biologic relationships that can be intervened upon to influence IGF-axis protein concentrations warrants further investigation.
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Affiliation(s)
- Jeannette M Beasley
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States.
| | - Nicole M Wedick
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States
| | - Swapnil N Rajpathak
- US Outcomes Research, US Medical Affairs, Merck & Co., North Wales, PA, United States
| | - Xiaonan Xue
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Michelle D Holmes
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Marc J Gunter
- Department of Epidemiology Biostatistics, School of Public Health, Imperial College, London, UK
| | - Judith Wylie-Rosett
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Thomas E Rohan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Michael Pollak
- Department of Medicine and Oncology, Cancer Prevention Research Unit, Lady Davis Research Institute of Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Robert C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Frank B Hu
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Qi Sun
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, United States
| | - Howard D Strickler
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
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Abstract
INTRODUCTION Acromegaly is a rare disease that severely impacts patients' health all the while, being a slowly progressing illness. In the past decades, advancements in treatment modalities, especially development of new drugs, as well as focused guidelines has improved management of acromegaly. Still, many patients are considered not sufficiently treated and there remains an ongoing need for further development. AREAS COVERED This article reviews new medical treatments currently under clinical investigation (such as pasireotide, oral octreotide and somatoprim) and under experimental development (such as octreotide implants, CAM2029 and ATL-1103). EXPERT OPINION As it seems unlikely that one single agent may achieve cure in 100% of cases, there is an urgent need for new agents that help patients where current medication fails. Imperatively, this means we have to improve our understanding of the underlying pathogenetic and molecular mechanisms.
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Affiliation(s)
- Sylvère Störmann
- Klinikum der Universität München, Medizinische Klinik und Poliklinik IV , Ziemssenstr. 1, 80336 München , Germany +49 0 89 5160 2111 ; +49 0 89 5160 2194 ;
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