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Güngör Kobat S, Gül FC, Çelik F, Liman Uzun S, Kobat MA, Akkoç RF, Aydın S. Plasma and aqueous levels of subfatin, preptin and betatrophin in patients with diabetic retinopathy. BMC Ophthalmol 2023; 23:312. [PMID: 37434133 DOI: 10.1186/s12886-023-03075-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 07/09/2023] [Indexed: 07/13/2023] Open
Abstract
AIM To examine subfatin, preptin and betatrophin levels in plasma and aqueous in patients with diabetes mellitus (DM) (with and without retinopathy). MATERIAL AND METHOD Sixty patients, who were similar in terms of age and gender, and were scheduled for operation due to cataract, were included in the study. The patients were divided into three groups as Group C (20 weeks without diabetes and comorbidity), Group DM (20 patients with DM but no retinopathy) and Group DR (20 patients with diabetic retinopathy). The preoperative body mass index (BMI), fasting plasma glucose, HbA1c, lipid profile levels of all patients in the groups were examined. Blood samples were also taken for plasma subfatin, preptin and betatrophin levels. At the beginning of the cataract surgery, 0.1 ml of aqueous fluid was taken from the anterior chamber. Plasma and aqueous subfatin, preptin and betatrophin levels were analyzed by ELISA (enzyme-linked immunosorbent assays) method. RESULTS In our study results, there was a significant difference in BMI, fasting plasma glucose and hemoglobin A1c levels (p < 0.05 for all parameters). Plasma and aqueous subfatin levels were higher in Group DR compared to Group C (p < 0.001, p = 0.036, respectively). Plasma and aqueous preptin levels were higher in group DR and group DM than in group C (p = 0.001, p = 0.002, p < 0.001, p = 0.001, respectively). Plasma and aqueous betatrophin levels were higher in Group DR compared to group C (p = 0.001, p = 0.010, respectively). CONCLUSION Subfatin, preptin and betatrophin molecules may have an important role in the pathogenesis of diabetic retinopathy.
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Affiliation(s)
| | | | - Fatih Çelik
- Department of Ophthalmology, Elazıg Health Science University, Elazıg, Turkey
| | - Seda Liman Uzun
- Department of Ophthalmology, Elazıg Health Science University, Elazıg, Turkey
| | | | | | - Süleyman Aydın
- Department of Biochemistry, Firat University, Elazıg, Turkey
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Saruhan E, Ispir E. Relationship Between Serum Betatrophin, GPIHBP1, and LDL Subfractions in Patients With Gestational Diabetes Mellitus. Clin Biochem 2023:110592. [PMID: 37277027 DOI: 10.1016/j.clinbiochem.2023.110592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/09/2023] [Accepted: 05/26/2023] [Indexed: 06/07/2023]
Abstract
OBJECTIVES Gestational diabetes mellitus (GDM) leads to changes in the lipid metabolism. In this study, we aimed to compare serum levels of LDL subfractions, betatrophin, and glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1 (GPIHBP1) between patients with GDM and healthy pregnant women. DESIGN AND METHODS We designed a prospective case-control study with 41 pregnant women. Subjects were divided into two groups: GDM and control. Betatrophin and GPIHBP1 levels were measured by ELISA method. Lipoprint LDL subfraction kit was used to perform LDL subfraction analysis electrophoretically. RESULTS Serum levels of LDL6 subfraction, betatrophin, and GPIHBP1 were found to be higher in GDM group compared to the controls (p<0.001). The mean LDL size were also found larger in GDM group. A positive correlation was found between betatrophin and GPIHBP1 levels (rho=0.96, p<0.001). CONCLUSIONS Our findings suggest that betatrophin, and GPIHBP1 levels were found to be increased in GDM. This maybe the result of adaptive mechanisms in response to insulin resistance, but also this relationship should be evaluated for their effects on impaired lipid metabolism and lipoprotein lipase metabolism. There is a need for further prospective studies with larger samples to fully elucidate the mechanisms of this relationship both in pregnant patients and the other patient groups.
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Affiliation(s)
- Ercan Saruhan
- University of Health Sciences Izmir Bozyaka Education and Research Hospital, Turkey
| | - Emre Ispir
- University of Health Sciences Izmir Bozyaka Education and Research Hospital, Turkey.
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Pérez-López FR, Yuan J, Sánchez-Prieto M, López-Baena MT, Pérez-Roncero GR, Varikasuvu SR. Maternal and cord blood betatrophin (angiopoietin-like protein 8) in pregnant women with gestational diabetes and normoglycemic controls: A systematic review, meta-analysis, and meta-regression. Diabetes Metab Res Rev 2023; 39:e3612. [PMID: 36656279 DOI: 10.1002/dmrr.3612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/15/2022] [Accepted: 01/13/2023] [Indexed: 01/20/2023]
Abstract
AIMS This systematic review and meta-analysis examined maternal and cord blood betatrophin levels in pregnant women with gestational diabetes mellitus (GDM) and normoglycemic controls. MATERIAL AND METHODS PubMed, Cochrane Library, Embase, LILACS, WangFang, and China National Knowledge Infrastructure were searched for literature from inception until May 2022. The primary outcomes were maternal and cord blood betatrophin levels. A random-effect meta-analysis was used to estimate the pooled results. The mean differences (MDs) or standardised MDs (SMD) and their 95% confidence intervals (CIs) were calculated. I2 tests were used to evaluate the heterogeneity. The quality of studies was evaluated using the Newcastle-Ottawa Scale. RESULTS Betatrophin levels were reported in 22 studies with a total of 3034 pregnant women, and in seven studies including cord blood from 456 infants. Women with GDM display higher betatrophin levels than the normoglycemic controls (SMD = 0.85, 95% CI: 0.38-1.31) during the second half of the pregnancy. The sensitivity analysis indicated that no single study had significantly influenced the betatrophin overall outcomes. There was heterogeneity between the studies as evidenced by high I2 values. Meta-regression analysis indicated a significant regression coefficient for maternal betatrophin and glycosilated haemoglobin. There was no significant difference in cord blood betatrophin in infants from women with and without GDM (SMD = 0.34, 95% CI: -0.15-0.83). Women with GDM also had significantly higher insulin, glucose, glycosylated haemoglobin, HOMA-IR, LDL-cholesterol, HDL-cholesterol, triglycerides, and body mass index compared with the normoglycemic controls. CONCLUSIONS Maternal betatrophin levels were higher in women with GDM than in the normoglycemic controls. There was no difference in cord blood betatrophin. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42022311372.
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Affiliation(s)
- Faustino R Pérez-López
- Faculty of Medicine, University of Zaragoza, Zaragoza, Spain
- Aragón Health Research Institute, Zaragoza, Spain
| | - Junhua Yuan
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
| | - Manuel Sánchez-Prieto
- Department of Obstetrics and Gynecology, Dexeus University Hospital, Barcelona, Spain
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Shyamaraja T. Udupa, Shivashankara A. Ramachandrayya, Suchetha Kumari N., Shilpa S. Shetty, D' Cunha P. Serum betatrophin levels and fatty acid profile in gestational diabetes mellitus: Correlation with insulin resistance. Biomedicine (Taipei) 2022. [DOI: 10.51248/.v42i4.1325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Introduction and Aim: Gestational diabetes mellitus (GDM) involves insulin resistance, altered levels of adipocytokines and inflammation. Interaction of various molecules in the pathogenesis of obesity and insulin resistance plays a major role in GDM. Angiopoietin-like protein 8, also named betatrophin is a hormone which is synthesized from liver and adipocytes. This molecule has beta cell-regenerating effect and is proposed to have therapeutic potential in obesity, insulin resistance and diabetes mellitus. The present study aimed to evaluate the role of betatrophin and free fatty acids (FFA) as markers of gestational diabetes mellitus (GDM).
Materials and Methods: This study was conducted in Medical College Hospital on pregnant women with the normal body mass index. The study subjects were divided into 2 groups -one with healthy pregnant women and the other GDM and recruited for the study at 24 to 28 weeks of gestation. The levels of betatrophin, insulin and FFA were estimated in the serum and HOMA-IR was calculated.
Results: Insulin resistance (IR), serum betatrophin level and plasma omega-6 fatty acid levels were higher, and plasma omega-3 fatty acid levels were lower among GDM subjects in comparison to healthy pregnant women. Fasting plasma glucose, serum betatrophin level and dihomo gamma linolenic acid level showed significant positive correlation with IR while omega 3 fatty acid %, levels of alpha linolenic acid, gamma linolenic acid and lauric acid showed negative correlation with IR in GDM women.
Conclusion: Altered fatty acid profile in gestational diabetes mellitus indicated potential application of fatty acids as biomarkers of metabolic derangements which arise due to insulin resistance. The findings have diagnostic, prognostic, and therapeutic implications.
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Kirlangic MM, Eraslan Sahin M, Sahin E, Madendag Y, Col Madendag I, Akdemir E, Vural Yalman M. First-trimester maternal serum betatrophin levels are decreased in pregnancies complicated by gestational diabetes mellitus. Placenta 2022; 124:1-4. [DOI: 10.1016/j.placenta.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/22/2022] [Accepted: 05/03/2022] [Indexed: 10/18/2022]
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Yuan J, Zhang D, Wang Y, Zhu Z, Lin Q, Li M, Zhong W, Han J, Xu F, Dong J. Angiopoietin-Like 8 in Gestational Diabetes Mellitus: Reduced Levels in Third Trimester Maternal Serum and Placenta, Increased Levels in Cord Blood Serum. Int J Endocrinol 2022; 2022:1113811. [PMID: 35529083 PMCID: PMC9072024 DOI: 10.1155/2022/1113811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 03/31/2022] [Indexed: 11/17/2022] Open
Abstract
Gestational diabetes mellitus (GDM) poses a significant health risk to pregnant women, and thus exploring the potential underlying mechanism is highly desirable. The aim of the study was to compare maternal serum, cord blood serum, and placental angiopoietin-like 8 (ANGPTL8) levels in the third trimester of pregnancy in women with and without gestational diabetes and explore the potential underlying mechanism. A total of 42 pregnant women (23 with GDM and 19 with normal glucose tolerance (NGT)) along with 29 age-matched non-pregnant healthy females were enrolled. All pregnant subjects were in the late third trimester. Maternal serum and cord blood serum ANGPTL8 levels were measured with an enzyme-linked immunosorbent assay and the protein levels of ANGPTL8 in placentas were assessed with western blotting. The associations between maternal serum and cord blood serum ANGPTL8 levels and metabolic parameters were investigated with the Spearman correlation analysis. Significantly lower levels of maternal serum and placental ANGPTL8 levels were observed in GDM patients compared to NGT pregnant women, while remarkably higher ANGPTL8 levels were present in the cord blood serum samples. The maternal serum ANGPTL8 level was positively correlated with BMI, total cholesterol, triglycerides, and AUC for OGTT and birthweight. Additionally, the cord blood serum ANGPTL8 level was positively correlated with insulin and the homeostatic model assessment for insulin resistance. Both maternal serum and cord blood serum ANGPTL8 levels seemed to correlate with GDM and has the potential to be used as a biomarker for GDM and birthweight prediction.
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Affiliation(s)
- Junhua Yuan
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
| | - Di Zhang
- Shandong Provincial Engineering Laboratory of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, College of Medicine and Nursing, Dezhou University, Shandong, China
| | - Yunyang Wang
- Department of Endocrinology & Metabolism, Affiliated Hospital of Qingdao University, Qingado, China
| | - Zhen Zhu
- Department of Gynecology and Obstetrics, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Qian Lin
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
| | - Manwen Li
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
| | - Weizhen Zhong
- Human functional laboratory, School of Basic Medicine, Qingdao University, Qingado, China
| | - Jing Han
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
| | - Fengsen Xu
- Department of Obstetrics, Qingdao Municipal Hospital, Qingdao University, Qingado, China
| | - Jing Dong
- Special Medicine Department, School of Basic Medicine, Qingdao University, Qingado, China
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingado, China
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Abstract
ANGPTL8 is an important cytokine, which is significantly increased in type 2 diabetes mellitus (T2DM), obesity and metabolic syndrome. Many studies have shown that ANGPTL8 can be used as a bio-marker of these metabolic disorders related diseases, and the baseline ANGPTL8 level has also been found to be positively correlated with retinopathy and all-cause mortality in patients with T2DM. This may be related to the inhibition of lipoprotein lipase activity and the reduction of circulating triglyceride (TG) clearance by ANGPTL8. Consistently, inhibition of ANGPTL8 seems to prevent or improve atherosclerosis. However, it is puzzling that ANGPTL8 seems to have a directing function for TG uptake in peripheral tissues; that is, ANGPTL8 specifically enhances the reserve and buffering function of white adipose tissue, which may alleviate the ectopic lipid accumulation to a certain extent. Furthermore, ANGPTL8 can improve insulin sensitivity and inhibit hepatic glucose production. These contradictory results lead to different opinions on the role of ANGPTL8 in metabolic disorders. In this paper, the correlation between ANGPTL8 and metabolic diseases, the regulation of ANGPTL8 and the physiological role of ANGPTL8 in the process of glucose and lipid metabolism were summarized, and the physiological/pathological significance of ANGPTL8 in the process of metabolic disorder was discussed.
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Affiliation(s)
- Chang Guo
- Department of Nephrology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
| | - Chenxi Wang
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
| | - Xia Deng
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
| | - Jianqiang He
- Department of Nephrology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
| | - Ling Yang
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
| | - Guoyue Yuan
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang 212001, Jiangsu, People's Republic of China
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ANGPTL8 in cardio-metabolic diseases. Clin Chim Acta 2021; 519:260-266. [PMID: 34023284 DOI: 10.1016/j.cca.2021.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/08/2021] [Accepted: 05/19/2021] [Indexed: 12/14/2022]
Abstract
Dyslipidemia has been identified as an important factor in obesity, diabetes mellitus, and cardiovascular diseases (CVD), grouped as cardio-metabolic disorder diseases. Accordingly, dyslipidemia has become a major determinant in health worldwide. Both genome-wide association studies (GWAS) and research studies have focused on the elucidation of potential genetic mechanisms of dyslipidemia and the identification of new gene loci which contribute to the development of cardio-metabolic disorder diseases. Recent results indicate that both the ANGPTL8 gene and ANGPTL8 protein perform vital roles in modulating serum glucose and lipid metabolism. In this review, we examine the modulatory effects of ANGPTL8 and explore the potential mechanisms whereby ANGPTL8 affects serum glucose and lipid metabolism in cardio-metabolic disorder diseases.
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Su X, Zhang G, Cheng Y, Wang B. New insights into ANGPTL8 in modulating the development of cardio-metabolic disorder diseases. Mol Biol Rep 2021; 48:3761-3771. [PMID: 33864591 DOI: 10.1007/s11033-021-06335-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/02/2021] [Indexed: 12/14/2022]
Abstract
Dyslipidemia is being identified as the most important factors of several health problems, such as obesity, diabetes mellitus, and cardiovascular diseases (CVD), which are always grouped together as cardio-metabolic disorder diseases. Consistently, dyslipidemia has become one of the most rising crisis of general health. Recently, it is worth noting that both genome-wide association studies (GWAS) and experimental research are being taken advantage to elucidate the potential genetic mechanisms of dyslipidemia and to identify new gene loci which contribute to the development of cardio-metabolic disorder diseases. According to the results, both ANGPTL8 gene and ANGPTL8 protein has been shown to embrace vital functions in modulating serum glucose and lipid metabolism. In the current review, the modulatory effects of ANGPTL8 in cardio-metabolic disorder diseases were summarized. In addition, novel insights which elucidate the potential mechanisms whereby ANGPTL8 affects glucose and lipid metabolism were also provided.
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Affiliation(s)
- Xin Su
- Department of Cardiology, The Xiamen Cardiovascular Hospital of Xiamen University, No. 2999 Jinshan Road, Xiamen, 361000, Fujian, China
| | - Guoming Zhang
- Department of Cardiology, The Xiamen Cardiovascular Hospital of Xiamen University, No. 2999 Jinshan Road, Xiamen, 361000, Fujian, China
| | - Ye Cheng
- Department of Cardiology, The Xiamen Cardiovascular Hospital of Xiamen University, No. 2999 Jinshan Road, Xiamen, 361000, Fujian, China.
| | - Bin Wang
- Department of Cardiology, The Xiamen Cardiovascular Hospital of Xiamen University, No. 2999 Jinshan Road, Xiamen, 361000, Fujian, China.
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Navaeian M, Asadian S, Ahmadpour Yazdi H, Gheibi N. ANGPTL8 roles in proliferation, metabolic diseases, hypothyroidism, polycystic ovary syndrome, and signaling pathways. Mol Biol Rep 2021; 48:3719-3731. [PMID: 33864588 DOI: 10.1007/s11033-021-06270-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 03/05/2021] [Indexed: 12/18/2022]
Abstract
A new and atypical member of the ANGPTL family is angiopoietin-like protein 8 (ANGPTL8). This newly discovered hormone is a drug target that can be used to treat diabetes and dyslipidemia. The protein, as a hepatocyte-derived circulating factor, can control the triglyceride level of plasma. ANGPTL8 is significantly associated with inflammation and metabolic syndrome consequences such as obesity, diabetes, hypothyroidism, and PCOS. ANGPTL8 gene has four exons encoding a 22/5 kDa weight of 198 amino acid polypeptides. A highly preserved ANGPTL8 gene among mammals exhibits the essential hormone functions of ANGPTL8. Nevertheless, the physiological function of this hormone in the body is poorly understood. Studies published in PubMed (2008-2020), Google Scholar (2004-2020), and Scopus (2004-2020) databases of clinical trials were reviewed. This analysis is aimed at collecting information on ANGPTL8. The emphasis of this review was on gathering information about the role of ANGPTL8 in the metabolism of glucose and lipids and cell proliferation. It addition to the different roles of ANGPTL8 in diabetes and lipid metabolism, this review emphasized on the protein role in signaling pathways. The study also proposes the signaling pathways that may be considered as a new target for treatment.
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Affiliation(s)
- Maryam Navaeian
- Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Samieh Asadian
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Hossein Ahmadpour Yazdi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran.
| | - Nematollah Gheibi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran.
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Seyhanli Z, Seyhanli A, Aksun S, Pamuk BO. Evaluation of serum Angiopoietin-like protein 2 (ANGPTL-2), Angiopoietin-like protein 8 (ANGPTL-8), and high-sensitivity C-reactive protein (hs-CRP) levels in patients with gestational diabetes mellitus and normoglycemic pregnant women. J Matern Fetal Neonatal Med 2021; 35:5647-5652. [PMID: 33615956 DOI: 10.1080/14767058.2021.1888919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE In the present study, we aimed to investigate the role of the fasting serum levels of Anjiopoetın 2 - like protein (ANGPTL2), Anjiopoetın 8-like protein (ANGPTL8), and high-sensitivity C-reactive protein (hs-CRP) in the etiopathogenesis of gestational diabetes mellitus (GDM), and analyze the relationships between insulin resistance parameters. MATERIAL AND METHOD The 90 individuals admitted to İzmir Katip Celebi University Hospital Internal Medicine, Endocrinology and Obstetrics, and gynecology outpatient clinic were included in the study of similar ages and similar demographic characteristics. Forty-five women with diet-controlled GDM and 45 women with normoglycemic pregnancy were enrolled. ANGPTL-2, ANGPTL-8, hs-CRP, creatinine, ALT, GGT, lipid profile, HBA1c(%), and serum insülin, c-peptide levels were studied in the fasting serum samples of research groups. All individuals had 75-g OGTT testing. GDM screening was performed at 24-28 weeks' gestation. Exclusion criteria were as follows: Age <18 years or >40 years, pregestational diabetes (type 1 or 2), drug or alcohol abuse, thyroid dysfunction, Hepatitis B, and other infectious diseases (Herpes virus, Streptococcus B carriers, Chlamydia and Candida), Thalassemia carriers or other significant medical conditions, the use of any medication that interferes with lipid or glucose metabolism that would affect glucose regulation. RESULT Forty-five women with GDM and for the control group, 45 women with normoglycemic pregnant women were identified. The mean gestational age was 30.7 (18-38) for GDM and 29.6 (24-39) for the control group. Serum ANGPTL-8 (GDM =19.5 ± 93 Control = 0.73 ± 3.78 p = <.001). There was a statistically significant difference between the case and control groups for serum ANGPTL-8 levels. Serum ANGPTL-2 (GDM =19.9 ± 23.1 Control = 26.0 ± 23.4 p = .105) and serum hs-CRP(GDM =106 ± 65.1 Control =98.2 ± 87.3 p = .768). There was no statistically significant difference between the case and control groups for serum ANGPTL-2 and hsCRP levels. Serum ANGPTL8 levels were positively correlated with FPG (r = 0.391, p = <.001), FPI (r = 0.212, p = .045), 1-h PPG (r = 0.514, p = <.001), 2-h PPG (r = 0.502, p = <.001), HOMA-IR) score (r = 0.310, p = .003), TG (r = 0.245, p = .020); they were not except for BMI, hs-CRP levels and ANGPTL2 levels. CONCLUSIONS ANGPTL8 levels were significantly higher in GDM than in healthy control group. ANGPTL2 levels and hs-CRP levels were similar to the healthy control group. Elevated serum ANGPTL8 levels were correlated significantly with insulin resistance parameters, the main component of GDM pathophysiology. Our data showed that ANGPTL8 could be a new biomarker for diagnosing GDM.
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Affiliation(s)
- Zeynep Seyhanli
- Obstetrics and Gynaecology, Izmir Gaziemir Nevvar Salih Isgoren State Hospital, Izmir, Turkey
| | - Ahmet Seyhanli
- Department of Internal Medicine (Hematology), Sivas Numune Hastanesi, Sivas, Turkey
| | - Saliha Aksun
- Biochemistry Department, Izmir Katip Celebi University Atatürk Training and Research Hospital, Izmir, Turkey
| | - Baris Onder Pamuk
- Endocrine and Metabolic Diseases Department Izmir, Izmir Katip Celebi University, Atatürk Training and Research Hospital, Izmir, Turkey
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Balachandiran M, Bobby Z, Dorairajan G, Gladwin V, Vinayagam V, Packirisamy RM. Decreased maternal serum adiponectin and increased insulin-like growth factor-1 levels along with increased placental glucose transporter-1 expression in gestational diabetes mellitus: Possible role in fetal overgrowth. Placenta 2020; 104:71-80. [PMID: 33285436 DOI: 10.1016/j.placenta.2020.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/02/2020] [Accepted: 11/24/2020] [Indexed: 02/08/2023]
Abstract
INTRODUCTION The placental glucose transporter - 1 (GLUT-1) is involved in the transplacental glucose transport to the fetus. GLUT-1 expressions are increased in diabetic pregnancies and associated with altered fetal growth. However, the factors regulating the GLUT-1 expressions are largely unknown. We hypothesised that maternal adipokines and insulin-like growth factor-1 (IGF1) modulate the placental expressions of GLUT-1 through the activation of insulin/IGF-1 signalling which may contribute to a fetal overgrowth in GDM. METHODS Maternal blood, cord blood and placental samples were collected from GDM and control pregnant women (CPW). The biochemical parameters, IGF1, adipokines, and high sensitive C- reactive protein were measured. We analysed the placental expressions of GLUT-1 and proteins related to insulin/IGF-1 signalling - insulin receptor -β, insulin receptor substrate - 1, phosphatidylinositol-3-kinase p110α, phospho Akt-1, phospho extracellular signal-regulated kinase 1/2, and nuclear factor-κB p65 in GDM and CPW. RESULTS Increased maternal IGF-1 and decreased adiponectin levels were found in the GDM women. Maternal IGF-1 levels were positively correlated, whereas adiponectin levels were negatively correlated with the birth weight of GDM newborns. Increased phosphorylation of Akt and ERK 1/2 was found in the placenta of GDM women. Placental expressions of GLUT-1 were significantly higher in the GDM women and positively correlated to the maternal IGF-1 levels in the GDM group. DISCUSSION Decreased maternal adiponectin and increased IGF-1 levels might have caused increased GLUT-1 expression via the increased activation of insulin/IGF-1 signalling in the placenta of GDM women which might have influenced the fetal growth.
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Affiliation(s)
- Manoharan Balachandiran
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Zachariah Bobby
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India.
| | - Gowri Dorairajan
- Department of Obstetrics & Gynaecology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Victorraj Gladwin
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Vickneshwaran Vinayagam
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Rajaa Muthu Packirisamy
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
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Akdemir E, Sahin E, Madendag Y, Sahin ME, Madendag IC, Acmaz G, Ozdemir F, Muhtaroglu S, Muderris II. Effect of preeclampsia and preeclampsia severity on insulin, HOMA-IR, and betatrophin levels in non-diabetic pregnant women. Placenta 2020; 100:54-59. [PMID: 32829168 DOI: 10.1016/j.placenta.2020.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/07/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of the study was to evaluate the effect of preeclampsia and its severity on insulin, the homeostatic model assessment of insulin resistance (HOMA-IR), and betatrophin levels in non-diabetic pregnant women. METHODS Our study comprised 102 pregnant women who were divided into the following three groups: (1) control, (2) severe preeclampsia, and (3) mild preeclampsia. The women were screened with the single-stage 75-g oral glucose tolerance test (OGTT), and the International Association of Diabetes and Pregnancy Study Groups (IADPSG) criteria were used for diagnosis. Those women with type 2 diabetes (T2D) mellitus or gestational diabetes mellitus (GDM) were excluded from the study. RESULTS Maternal demographic characteristics were similar among the groups. Fasting plasma glucose and postprandial 2-h plasma glucose levels were significantly increased in the severe-preeclampsia group compared to that in the other groups. Fasting insulin levels were 14.3 ± 8.7uU/mL in the severe-preeclampsia group, 19.1 ± 6.0uU/mL in the mild-preeclampsia group, and 20.5 ± 12.5uU/mL in the control group and significantly lower in the severe-preeclampsia group than in the mild-preeclampsia and control groups. The serum betatrophin level was 7.8 ± 2.6 ng/mL in the severe-preeclampsia group, 6.1 ± 1.8 ng/mL in the mild-preeclampsia group, and 5.8 ± 1.3 ng/mL in the control group and significantly increased in the severe-preeclampsia group compared to other groups. HOMA-IR was similar among the groups. Maternal serum insulin levels were negatively (r = -0,255; P = 0.010) and serum betatrophin levels were positively (r = 0.368; P ≤ 0.001) correlated with preeclampsia severity. CONCLUSION Our results indicated that severe preeclampsia effect maternal serum glucose, insulin and betatrophin levels. Histhopatholical and immunohistochemical demostrations on pancreatic cells in new preeclampsia rat models will expand the information on the current situation.
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Affiliation(s)
- Esra Akdemir
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
| | - Erdem Sahin
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
| | - Yusuf Madendag
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
| | | | - Ilknur Col Madendag
- Department of Obstetrics and Gynecology, Kayseri City Hospital, Kayseri, Turkey
| | - Gokhan Acmaz
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
| | - Fatma Ozdemir
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
| | - Sabahattin Muhtaroglu
- Department of Biochemistry Clinic, Erciyes University Medicine Facility, Kayseri, Turkey
| | - Iptisam Ipek Muderris
- Department of Obstetrics and Gynecology, Erciyes University Medicine Facility, Kayseri, Turkey
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14
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Leutner M, Matzhold C, Bellach L, Deischinger C, Thurner S, Klimek P, Kautzky-Willer A. Betatrophin is downregulated in pregnant women with a history of RYGB operation and a high risk of postprandial hypoglycaemia. Sci Rep 2020; 10:13152. [PMID: 32753693 PMCID: PMC7403341 DOI: 10.1038/s41598-020-70075-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/22/2020] [Indexed: 11/21/2022] Open
Abstract
Betatrophin is a liver and adipose tissue-derived protein which has recently been linked to glucose metabolism. So far, no data exist about the role of betatrophin in pregnant women with a history of Roux-En-Y gastric bypass (RYGB) operation with a high risk of postprandial hypoglycaemia. In this prospective clinical study, an oral glucose tolerance test (OGTT) and an intravenous glucose tolerance test (IVGTT) were performed between the 24th and 28th week of pregnancy and 3–6 months post-partum in a cohort of obese and normal-weight pregnant women, as well as in women with a history of RYGB operation. In the cohort of pregnant women with RYGB and exaggerated risk of postprandial hypoglycaemic events, basal and dynamic betatrophin levels during the OGTT were lower than in the obese or normal-weight pregnant women (basal levels: 13.66 ± 5.88 vs. 19.03 ± 4.15 vs. 15.68 ± 6.48, p = 0.016; OGTT 60′: 13.33 ± 5.40 vs. 17.37 ± 3.16 vs. 15.84 ± 4.99, p = 0.030). During the OGTT, basal and dynamic betatrophin levels at 60′ were positively associated with glucose levels at 60 min (r = 0.55, p = 0.01 and r = 0.45, p = 0.039). This positive association was followed by significant hypoglycaemic events in the RYGB group. It was only in the RYGB group that betatrophin was negatively related to the disposition index (rho = -0.53, p = 0.014). After pregnancy there was a decrease in basal and stimulated betatrophin levels during the OGTT in all three patient groups. In comparison to normal-weight and obese pregnant women, women with a history of RYGB operation and a high risk of postprandial hypoglycaemic events have lower levels of betatrophin. This indicate a mechanistic role in order to decrease the risk of postprandial hypoglycaemia in this specific cohort.
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Affiliation(s)
- Michael Leutner
- Unit of Gender Medicine, Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Caspar Matzhold
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria.,Complexity Science Hub Vienna, Josefstädter Strasse 39, 1080, Vienna, Austria
| | - Luise Bellach
- Unit of Gender Medicine, Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Carola Deischinger
- Unit of Gender Medicine, Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Stefan Thurner
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria.,Complexity Science Hub Vienna, Josefstädter Strasse 39, 1080, Vienna, Austria.,Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM, 85701, USA.,IIASA, Schlossplatz 1, 2361, Laxenburg, Austria
| | - Peter Klimek
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria.,Complexity Science Hub Vienna, Josefstädter Strasse 39, 1080, Vienna, Austria
| | - Alexandra Kautzky-Willer
- Unit of Gender Medicine, Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria. .,Gender Institute, 3571, Gars am Kamp, Austria.
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15
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Qiao L, Shetty SK, Spitler KM, Wattez JS, Davies BSJ, Shao J. Obesity Reduces Maternal Blood Triglyceride Concentrations by Reducing Angiopoietin-Like Protein 4 Expression in Mice. Diabetes 2020; 69:1100-1109. [PMID: 32051149 PMCID: PMC7243287 DOI: 10.2337/db19-1181] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/07/2020] [Indexed: 12/25/2022]
Abstract
To ensure fetal lipid supply, maternal blood triglyceride (TG) concentrations are robustly elevated during pregnancy. Interestingly, a lower increase in maternal blood TG concentrations has been observed in some obese mothers. We have shown that high-fat (HF) feeding during pregnancy significantly reduces maternal blood TG levels. Therefore, we performed this study to investigate if and how obesity alters maternal blood TG levels. Maternal obesity was established by prepregnant HF (ppHF) feeding, which avoided the dietary effect during pregnancy. We found not only that maternal blood TG concentrations in ppHF dams were remarkably lower than in control dams but also that the TG peak occurred earlier during gestation. Hepatic TG production and intestinal TG absorption were unchanged in ppHF dams, but systemic lipoprotein lipase (LPL) activity was increased, suggesting that increased blood TG clearance contributes to the decreased blood TG concentrations in ppHF dams. Although significantly higher levels of UCP1 protein were observed in interscapular brown adipose tissue (iBAT) of ppHF dams, Ucp1 gene deletion did not restore blood TG concentrations in ppHF dams. Expression of the angiopoietin-like protein 4 (ANGPTL4), a potent endogenous LPL inhibitor, was significantly increased during pregnancy. However, the pregnancy-induced elevation of blood TG was almost abolished in Angptl4 -/- dams. Compared with control dams, Angptl4 mRNA levels were significantly lower in iBAT, gonadal white adipose tissue, and livers of ppHF dams. Importantly, ectopic overexpression of ANGPTL4 restored maternal blood TG concentrations in ppHF dams. Together, these results indicate that ANGPTL4 plays a vital role in increasing maternal blood TG concentrations during pregnancy. Obesity impairs the rise of maternal blood TG concentrations by reducing ANGPTL4 expression in mice.
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Affiliation(s)
- Liping Qiao
- Department of Pediatrics, University of California San Diego, La Jolla, CA
| | - Shwetha K Shetty
- Department of Biochemistry, Fraternal Order of Eagles Diabetes Research Center, Obesity Research and Education Initiative, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Kathryn M Spitler
- Department of Biochemistry, Fraternal Order of Eagles Diabetes Research Center, Obesity Research and Education Initiative, University of Iowa Carver College of Medicine, Iowa City, IA
| | | | - Brandon S J Davies
- Department of Biochemistry, Fraternal Order of Eagles Diabetes Research Center, Obesity Research and Education Initiative, University of Iowa Carver College of Medicine, Iowa City, IA
| | - Jianhua Shao
- Department of Pediatrics, University of California San Diego, La Jolla, CA
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16
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Holmannova D, Borska L, Andrys C, Borsky P, Kremlacek J, Hamakova K, Rehacek V, Malkova A, Svadlakova T, Palicka V, Krejsek J, Fiala Z. The Impact of Psoriasis and Metabolic Syndrome on the Systemic Inflammation and Oxidative Damage to Nucleic Acids. J Immunol Res 2020; 2020:7352637. [PMID: 32537470 PMCID: PMC7256681 DOI: 10.1155/2020/7352637] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/14/2020] [Accepted: 04/27/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Psoriasis is a chronic systemic inflammatory disease associated with a wide range of comorbidities, including metabolic syndrome (MetS). Serum calprotectin, ANGPTL8, and oxidative damage to nucleic acids might be associated with both diseases. The presented study describes the influence of psoriasis and MetS on the serum levels of markers of systemic inflammation (calprotectin and ANGPTL8) and markers of oxidative damage to nucleic acids. The applicability of serum levels of calprotectin and ANGPTL8 for monitoring of the activity of psoriasis (diagnostic markers) is also evaluated. METHODS Clinical examination (PASI score, MetS), enzyme-linked immunosorbent assay (ELISA), and Enzyme Immunoassay (EIA). Serum calprotectin, ANGPTL8, 8-hydroxy-2'-deoxyguanosine, 8-hydroxyguanosine, and 8-hydroxyguanine. Results and Conclusions. The psoriasis significantly increased the serum level of calprotectin and the serum level of oxidative damage to nucleic acids, however not the serum level of ANGPTL8. The presence of MetS did not significantly affect the serum levels of calprotectin, ANGPTL8, and oxidative damage to nucleic acids in either psoriasis patients or controls. It seems that the serum level of calprotectin (but not the serum level of ANGPTL8) could be used as a biomarker for monitoring the activity of psoriasis.
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Affiliation(s)
- Drahomira Holmannova
- Institute of Hygiene and Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Lenka Borska
- Institute of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Ctirad Andrys
- Institute of Clinical Immunology and Allergology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Pavel Borsky
- Institute of Hygiene and Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
- Institute of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Jan Kremlacek
- Institute of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Kvetoslava Hamakova
- Clinic of Dermatology and Venereology, University Hospital Hradec Kralove, Czech Republic
| | - Vit Rehacek
- Transfusion Center, University Hospital, Hradec Kralove 500 03, Czech Republic
| | - Andrea Malkova
- Institute of Hygiene and Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Tereza Svadlakova
- Institute of Hygiene and Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
- Institute of Clinical Immunology and Allergology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Vladimir Palicka
- Institute of Clinical Biochemistry and Diagnostics, University Hospital Hradec Kralove and Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Jan Krejsek
- Institute of Clinical Immunology and Allergology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
| | - Zdenek Fiala
- Institute of Hygiene and Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Czech Republic
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17
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Gülcü Bulmuş F, Melekoğlu R, Gürsu MF, Bağcı H, Celik Kavak E, Akyol A. Evaluation of second-trimester maternal serum betatrophin levels and lipid and carbohydrate metabolism parameters in patients with gestational diabetes mellitus. Turk J Obstet Gynecol 2020; 17:28-33. [PMID: 32341827 PMCID: PMC7171536 DOI: 10.4274/tjod.galenos.2020.67026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 02/29/2020] [Indexed: 12/18/2022] Open
Abstract
Objective: We investigated the role of betatrophin in the etiopathogenesis of gestational diabetes mellitus (GDM) and its association with lipid and carbohydrate metabolism in patients with GDM and normoglycemic pregnant women. Materials and Methods: A total of 60 patients [30 pregnant women with GDM (study group) and 30 healthy age-, body mass index-, and gestational agematched pregnant women (control group)] were included in this study. Serum betatrophin, fasting glucose, insulin, glycated hemoglobin A1c (HbA1c), and C-peptide levels, as well as lipid parameters, were measured. Results: Serum betatrophin, fasting glucose, HbA1c, insulin, and C-peptide levels were significantly higher in the GDM group than in the control group (p<0.001, p=0.009, p=0.013, p<0.001, and p<0.001, respectively). Levels of triglycerides and very-low-density lipoprotein cholesterol were significantly higher in the GDM group (p=0.020 and p=0.020, respectively), but total cholesterol and LDL cholesterol levels were similar in the two groups (p=0.810 and p=0.273, respectively). Betatrophin levels in the GDM group were correlated positively with insulin levels (r=0.336, p=0.009) and the homeostatic model assessment of insulin resistance (HOMA-IR) score (r=0.269, p=0.038), and negatively with the C-peptide levels (r=-0.399, p=0.002); they were not correlated with any other glucose or lipid parameters. Multivariate stepwise linear regression analysis demonstrated that insulin levels (β=0.134, p=0.013) and the HOMA-IR score (β=0.112, p=0.017) were associated independently with serum betatrophin levels. Conclusion: These results demonstrate that serum betatrophin levels were significantly higher in pregnant women with GDM than in normoglycemic pregnant women. The levels of betatrophin were correlated significantly with insulin resistance parameters, which is a key feature of GDM pathophysiology.
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Affiliation(s)
- Funda Gülcü Bulmuş
- Fırat University Faculty of Medicine, Vocational School of Health Services, Elazığ, Turkey
| | - Rauf Melekoğlu
- İnönü University Faculty of Medicine, Department of Obstetrics and Gynecology, Malatya, Turkey
| | - Mehmet Ferit Gürsu
- Fırat University Faculty of Medicine, Department of Biochemistry, Elazığ, Turkey
| | - Helin Bağcı
- Karabük University Training and Research Hospital, Clinic of Obstetrics and Gynecology, Karabük, Turkey
| | - Ebru Celik Kavak
- Fırat University Faculty of Medicine, Department of Obstetrics and Gynecology, Elazığ, Turkey
| | - Alpaslan Akyol
- Fırat University Faculty of Medicine, Department of Obstetrics and Gynecology, Elazığ, Turkey
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18
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ANGPTL8 enhances insulin sensitivity by directly activating insulin-mediated AKT phosphorylation. Gene 2020; 749:144707. [PMID: 32344005 DOI: 10.1016/j.gene.2020.144707] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022]
Abstract
ANGPTL8 is a 22-KDa protein in the angiopoietin-like family. It is a liver-derived hormone that dynamically regulates glucose metabolism after refeeding. The mechanism of its regulation of glucose metabolism is unclear. We analyzed the effect of ANGPTL8 overexpression on glucose tolerance in the mouse liver by tail vein hydrodynamic transfection. The mechanism of ANGPTL8 improving insulin sensitivity was analyzed by the overexpression or knockdown of ANGPTL8 in mouse primary hepatocytes through in vitro synthetic mRNA and siRNA technology. The key site of ANGPTL8 protein regulating this signal pathway was screened by DNA point mutation and fragment truncation. The results showed that ANGPTL8 may directly regulate AKT protein phosphorylation in the insulin-mediated PI3K/AKT signaling pathway to improve insulin sensitivity. Ser94 and Thr98 are the key sites of ANGPTL8 protein in activating AKT protein phosphorylation. Present results indicate that ANGPTL8 may be a potential new agent to reduce postprandial blood glucose.
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19
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Balachandiran M, Bobby Z, Dorairajan G, Jacob SE, Gladwin V, Vinayagam V, Packirisamy RM. Placental Accumulation of Triacylglycerols in Gestational Diabetes Mellitus and Its Association with Altered Fetal Growth are Related to the Differential Expressions of Proteins of Lipid Metabolism. Exp Clin Endocrinol Diabetes 2020; 129:803-812. [PMID: 31968385 DOI: 10.1055/a-1017-3182] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Gestational diabetes mellitus (GDM) exhibit altered placental lipid metabolism. The molecular basis of this altered metabolism is not clear. Altered placental expression of proteins of lipogenesis and fatty acid oxidation may be involved in the placental accumulation of triacylglycerols (TG). The present study was aimed at investigating the differential expressions of placental proteins related to lipid metabolism among GDM women in comparison with control pregnant women (CPW) and to correlate them with maternal and fetal lipid parameters as well as altered fetal growth. MATERIALS AND METHODS Maternal blood, cord blood, and placental samples were collected from GDM and CPW. The biochemical parameters, glucose, lipid profile and free fatty acids (FFA) were measured. The placental TG content was measured. Differential placental expressions of proteins; phosphatidylinositol-3-kinase (PI3K) p85α, PI3K p110α,liver X receptor alpha (LXRα), sterol regulatory element binding protein1(SREBP1), fatty acid synthase (FAS), stearyl CoA desaturase1 (SCD1), lipoprotein lipase (LPL),Peroxisome proliferator-activated receptor (PPAR)α and PPARγ were analysed by western blotting and immunohistochemistry. RESULTS Placental protein expressions of PI3K p110α, LXRα, FAS, SCD1, and LPL were found to be significantly higher, whereas PPARα and PPARγ were lower in GDM women compared with CPW. The placental TG content and cord plasma FFA were increased in GDM women compared with CPW. The placental TG content positively correlated with Ponderal index of GDM new-borns. CONCLUSION Differential expressions of placental proteins related to lipid metabolism in GDM might have led to placental TG accumulation. This might have contributed to the fetal overgrowth in GDM.
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Affiliation(s)
- Manoharan Balachandiran
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Zachariah Bobby
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Gowri Dorairajan
- Department of Obstetrics & Gynaecology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Sajini Elizabeth Jacob
- Department of Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Victorraj Gladwin
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Vickneshwaran Vinayagam
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Rajaa Muthu Packirisamy
- Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
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20
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Guo C, Zhao L, Ding Y, Zhao Z, Wang C, Li L, Cai Z, Li Y, Xia H, Zhu Z, Yu F, Dai M, Deng X, Yuan G. ANGPTL8 Gene Polymorphism rs2278426 Is Related to Carotid Intima-Media Thickness in T2DM. Diabetes Metab Syndr Obes 2020; 13:4519-4528. [PMID: 33244249 PMCID: PMC7685358 DOI: 10.2147/dmso.s274759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/17/2020] [Indexed: 01/03/2023] Open
Abstract
AIM ANGPTL8 is a cytokine expressed and secreted by liver and adipose tissue, and is involved in glucose, lipid, and energy metabolism. Although studies have shown that ANGPTL8 is elevated in type 2 diabetes mellitus (T2DM) and cardiovascular disease, few have examined the association between ANGPTL8 single-nucleotide polymorphisms and the risk of macrovascular complications in T2DM patients. This study aimed to explore the relationship between rs2278426 and carotid intima-media thickening (cIMT) in T2DM. METHODS A total of 217 T2DM patients and 201 healthy control subjects with normal glucose tolerance were recruited in the study. T2DM patients were divided into two groups: T2DM patients without cIM thickening (cIMT <1 mm, 109 cases) and T2DM patients with cIM thickening (cIMT ≥1 mm, 108 cases). rs2278426 genotypes in all 418 subjects were determined and the risk of T2DM and T2DM with cIM thickening analyzed. RESULTS CT+TT-genotype frequency in T2DM was higher than in controls with normal glucose tolerance, and the proportion of the CT+TT genotype in the group with cIMT was higher than in the group (P<0.05). In addition, T alleles were associated with waist:hip ratio, triglycerides, high density-lipoprotein cholesterol, plasma glucose at 2 hours' oral glucose tolerance, and homeostatic model assessment of insulin resistance (P<0.05). CONCLUSION Generally, carriers of the T allele at rs2278426 are more likely to develop T2DM, and the risk of cIM thickening is significantly increased for T-allele carriers with T2DM, which indicates an increased risk of macroangiopathy.
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Affiliation(s)
- Chang Guo
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Li Zhao
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Yi Ding
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Zhicong Zhao
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Chenxi Wang
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Lian Li
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Zhensheng Cai
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Yanyan Li
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Hong Xia
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - ZhuanZhuan Zhu
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Fan Yu
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Meiqing Dai
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
| | - Xia Deng
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
- Xia Deng Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China Email
| | - Guoyue Yuan
- Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212001, People’s Republic of China
- Correspondence: Guoyue Yuan Department of Endocrinology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu212001, People’s Republic of ChinaTel +86-135-0528-9352 Email
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Esfahani M, Goodarzi MT. A Short Review on ANGPTL-8 as an Important Regulator in Diabetes. AVICENNA JOURNAL OF MEDICAL BIOCHEMISTRY 2019. [DOI: 10.34172/ajmb.2019.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
ANGPTL8, a new hormone, is regarded as a novel target for type-2 diabetes and associated metabolic disorder. Nutritional state and hormonal factors are involved in the regulation of ANGPTL-8 expression. This protein is associated with some myokines or adipokines. Several studies confirmed the function of ANGPTL-8 in glucose metabolism and diabetes complications; however, there are opposite results. The accurate function of ANGPTL-8 in T2D remains unclear. Further strictly controlled studies including measuring methods, nutritional state, diagnostic criteria of overweight/obesity, age, and ethnicity may help to resolve discrepancies. In addition, more studies are demanded to clarify the potential role of ANGPTL-8 in humans, a cause or an effect of this protein in association with insulin resistance, the regulatory mechanism of ANGPTL-8 expression, and the association of ANGPTL8 with other adipokines or myokines. In this mini review, we described various roles of ANGPTL-8 in diabetes.
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Affiliation(s)
- Maryam Esfahani
- Ph.D. in Clinical Biochemistry, Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Taghi Goodarzi
- Professor of Clinical Biochemistry, Department of Biochemistry, Shahrood Branch, Islamic Azad University, Shahrood, Iran
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Zhang D, Yu YJ, Xu FS, Yuan JH, Wang R, Zhang CS, Wang LX, Liu Y, Song LM, Liu JL, Dong J. Recombinant betatrophin (Angptl‑8/lipasin) ameliorates streptozotocin‑induced hyperglycemia and β‑cell destruction in neonatal rats. Mol Med Rep 2019; 20:4523-4532. [PMID: 31702044 PMCID: PMC6797976 DOI: 10.3892/mmr.2019.10719] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022] Open
Abstract
Betatrophin [also known as lipasin, angiopoietin‑like 8 (ANGPTL8), refeeding induced in fat and liver (RIFL), or hepatocellular carcinoma‑associated gene TD26], a 22‑kDa protein in the angiopoietin‑like family, is a liver‑derived hormone that promotes pancreatic β‑cell proliferation and lipid metabolism. The aim of the present study was to investigate the effect of recombinant betatrophin on β‑cell regeneration in a neonatal streptozotocin (STZ)‑induced diabetic rat model. One‑day‑old Wistar rats were injected with STZ (100 mg/kg), followed by intraperitoneal administration of betatrophin to the STZ‑injected rats for 6 days. Plasma glucose and body weight were monitored. On days 4 and 7, expression levels of pancreatic duodenal homeobox gene‑1 (PDX‑1), the Bax/B‑cell lymphoma‑2 (Bcl‑2) ratio and plasma insulin were assessed, and the β‑cell proliferation rate was determined. Pancreatic islet area and number were determined at 10 weeks. It was found that betatrophin treatment alleviated STZ‑induced hyperglycemia, elevated pancreatic expression levels of Bcl‑2, PDX‑1, plasma insulin levels and the β‑cell proliferation rate on days 4 and 7. Long‑term betatrophin treatment improved glucose tolerance, associated with improved plasma insulin levels and β‑cell mass. These results suggest that early administration of betatrophin promotes β‑cell proliferation in STZ‑induced diabetic neonates and prevents the development of diabetes in adults.
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Affiliation(s)
- Di Zhang
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Yan-Juan Yu
- Department of Endocrinology, The People's Hospital of Jiaozuo City, Jiaozuo, Henan 454150, P.R. China
| | - Feng-Sen Xu
- Department of Obstetrics, Qingdao Municipal Hospital, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Jun-Hua Yuan
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Rui Wang
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Cai-Shun Zhang
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Liu-Xin Wang
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Yuan Liu
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Li-Min Song
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Jun-Li Liu
- Fraser Laboratories for Diabetes Research, Department of Medicine, McGill University Health Center, McGill University, Montreal, QC H4A3J1, Canada
| | - Jing Dong
- Special Medicine Department, Medical College, Qingdao University, Qingdao, Shandong 266071, P.R. China
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Kahraman S, Altinova AE, Yalcin MM, Gulbahar O, Arslan B, Akturk M, Cakir N, Toruner FB. Association of serum betatrophin with fibroblast growth factor-21 in women with polycystic ovary syndrome. J Endocrinol Invest 2018; 41:1069-1074. [PMID: 29363048 DOI: 10.1007/s40618-018-0831-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/10/2018] [Indexed: 12/29/2022]
Abstract
PURPOSE Betatrophin and fibroblast growth factor-21 (FGF-21), which are recently discovered members of hepatokine/adipokine family, have been proposed to be associated with some metabolic disorders in which insulin resistance plays a major role. METHODS We aimed to investigate serum betatrophin and FGF-21 concentrations in women with polycystic ovary syndrome (PCOS). In this cross-sectional study, we recruited 31 women with PCOS and 34 women as healthy controls. Serum betatrophin level and its relationship with serum FGF-21 level as well as metabolic parameters were examined. RESULTS Serum betatrophin level was significantly higher in women with PCOS than the control group [1.10 (0.20-4.20) vs 0.70 (0.20-3.50) ng/ml, p = 0.004], whereas FGF-21 did not differ between the groups [74.80 (7.80-435.90) vs 119.30 (10.50-443.40) pg/ml, p = 0.13]. Serum betatrophin correlated positively with LH levels (r = 0.26, p = 0.03). After controlling BMI, there was a significant positive correlation between betatrophin and FGF-21 (r = 0.25, p = 0.04). Multivariate regression analysis revealed that FGF-21 and presence of PCOS were the significant predictors of betatrophin concentrations (R2 = 0.22, F = 2.56, p = 0.03). CONCLUSIONS Our results indicate that betatrophin levels are increased and associated with LH and FGF-21 levels, but not with insulin resistance, in women with PCOS.
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Affiliation(s)
- S Kahraman
- Department of Internal Medicine, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - A E Altinova
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Beşevler, 06500, Ankara, Turkey.
| | - M M Yalcin
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Beşevler, 06500, Ankara, Turkey
| | - O Gulbahar
- Department of Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - B Arslan
- Department of Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - M Akturk
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Beşevler, 06500, Ankara, Turkey
| | - N Cakir
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Beşevler, 06500, Ankara, Turkey
| | - F B Toruner
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Beşevler, 06500, Ankara, Turkey
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Kara Ö, Kirbas A, Yakut K, Daglar K, Timur H, Ozturk İnal Z, Engin-Ustun Y. Assessment of circulating betatrophin levels in intrahepatic cholestasis of pregnancy. J Matern Fetal Neonatal Med 2018; 32:4067-4072. [PMID: 29890866 DOI: 10.1080/14767058.2018.1481382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Objective: To investigate maternal serum levels of betatrophin and their relationship with total bile acid (TBA) levels in patients with intrahepatic cholestasis of pregnancy (ICP).Materials and methods: Fifty-nine pregnant women with ICP (31 patients with severe and 28 patients with mild disease classifications) and 23 healthy women with uncomplicated pregnancies as the control group included the study. The maternal betatrophin, fasting blood glucose, fasting insulin (FI), and homeostatic model assessment of insulin resistance (HOMA-IR) levels of the groups were compared.Results: Serum betatrophin levels were significantly higher in the ICP groups than in the control group (p = .04 and p < .001, respectively). The FI levels and HOMA-IR values were significantly higher in the severe ICP group than in the control group (p = .006 and p = .001, respectively). While a significant positive correlation was found between betatrophin levels and fasting and postprandial TBA levels, there was no significant correlation among betatrophin and HOMA-IR or FI levels.Conclusions: Betatrophin levels were shown to correlate with TBA levels, it provides a model for future studies to understand the physiopathology of ICP, a complex metabolic disease. Changes in betatrophin levels may shed light on the pathogenesis of ICP.
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Affiliation(s)
- Özgür Kara
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
| | - Ayşe Kirbas
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
| | - Kadriye Yakut
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
| | - Korkut Daglar
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
| | - Hakan Timur
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
| | - Zeynep Ozturk İnal
- Department of Obstetrics and Gynecology, Konya Education and Research Hospital, Konya, Turkey
| | - Yaprak Engin-Ustun
- Department of Maternal-Fetal Medicine Unit, University of Health Sciences, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey
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25
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Timur B, Tuncer SF, Bodur S, Timur H, Tokmak A, Gucel F, Altay M. Serum betatrophin/angiopoietin-like protein 8 (ANGPTL8) levels in pregnancies affected by hyperemesis gravidarum. Eur J Obstet Gynecol Reprod Biol 2018; 225:221-227. [PMID: 29754072 DOI: 10.1016/j.ejogrb.2018.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/09/2018] [Accepted: 04/23/2018] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The association between serum betatrophin levels and hyperemesis gravidarum (HEG) remains unknown. The aim of this study was to determine and understand the alterations in serum betatrophin levels in pregnancies complicated by HEG compared with unaffected normal pregnancies. STUDY DESIGN A cohort study was carried out to evaluate serum betatrophin levels in patients with HEG. Serum betatrophin concentrations were measured with other metabolic markers for lipids and glucose metabolism in 40 singleton pregnancies affected by HEG and 40 gestational age- and body mass index-matched controls. RESULTS The serum betatrophin concentrations were significantly higher in pregnant women with HEG than in the controls (1000 [600-1100] vs. 900 [500-1000] pg/ml, p = 0.003). The serum total cholesterol (TC) and high-density lipoprotein cholesterol (HDL-C) levels were significantly higher in patients with HEG than in the healthy counterparts at the first trimester of pregnancy (158.5 ± 29.4 vs. 143.8 ± 29.7 mg/dl and 47.3 ± 14.2 vs. 40.1 ± 8.6 mg/dl, p = 0.031 and p = 0.007, respectively). Receiver operating characteristic (ROC) analyses demonstrated that the area under the curve (AUC) indicative of the betatrophin value for discriminating HEG patients was 0.690 (95% CI: 0.574-0.806, p = 0.003). The optimal cutoff value was 976 pg/ml with a sensitivity of 50% (95% CI: 33.80-66.20%) and a specificity of 82.5% (95% CI: 67.22-92.66%). We also found a positive correlation between betatrophin levels and HDL-C (r = 0.311; p = 0.005). Logistic regression analyses demonstrated that increased levels of betatrophin and HDL-C were risk factors for HEG with odds ratios (95% confidence interval) of 4.884 (1.589-15.009) and 5.346 (1.044-27.366), respectively. CONCLUSION We conclude that serum betatrophin concentrations were increased in pregnancies affected by HEG. Furthermore, HDL-C levels seem to be associated with alterations in serum betatrophin levels.
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Affiliation(s)
- Burcu Timur
- Department of Obstetrics and Gynecology, Etlik Zubeyde Hanim Maternity and Women's Health Teaching and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Serap Fırtına Tuncer
- Department of Obstetrics and Gynecology, Etlik Zubeyde Hanim Maternity and Women's Health Teaching and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Serkan Bodur
- Department of Obstetrics and Gynecology, Gulhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Hakan Timur
- Department of Obstetrics and Gynecology, Zekai Tahir Burak Women's Health Education and Research Hospital, University of Health Sciences, Ankara, Turkey; Department of Perinatology, Ordu University Training and Research Hospital, Ordu, Turkey
| | - Aytekin Tokmak
- Department of Obstetrics and Gynecology, Zekai Tahir Burak Women's Health Education and Research Hospital, University of Health Sciences, Ankara, Turkey.
| | - Funda Gucel
- Department of Clinical Biochemistry, Etlik Zubeyde Hanim Maternity and Women's Health Teaching and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Metin Altay
- Department of Obstetrics and Gynecology, Etlik Zubeyde Hanim Maternity and Women's Health Teaching and Research Hospital, University of Health Sciences, Ankara, Turkey
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Huang Y, Chen X, Chen X, Feng Y, Guo H, Li S, Dai T, Jiang R, Zhang X, Fang C, Hu J. Angiopoietin-like protein 8 in early pregnancy improves the prediction of gestational diabetes. Diabetologia 2018; 61:574-580. [PMID: 29167926 DOI: 10.1007/s00125-017-4505-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/16/2017] [Indexed: 12/13/2022]
Abstract
AIMS/HYPOTHESIS Screening high-risk individuals for gestational diabetes mellitus (GDM) in early pregnancy conventionally relies on established maternal risk factors; however, the sensitivity and specificity of these factors are not satisfactory. The present study aimed to determine whether the concentration of angiopoietin-like protein 8 (ANGPTL8), either alone or combined with other risk factors in early pregnancy, could be used to predict subsequent GDM. METHODS From August 2015 to January 2016, 474 women receiving prenatal care at around 12-16 weeks of gestation were recruited into the study. ANGPTL8 levels were measured at the first prenatal visit. All the participants received a 75 g OGTT during weeks 24-28 of gestation. RESULTS ANGPTL8 levels in early pregnancy were considerably higher in women who developed GDM than those who maintained normal glucose tolerance (2822 ± 938 vs 2120 ± 1118 pg/ml, respectively; p < 0.0001). Multivariable logistic regression revealed that ANGPTL8 levels were significantly associated with risk of GDM independent of conventional risk factors. In addition, women in the highest quartile of ANGPTL8 concentration had an 8.75-fold higher risk of developing GDM compared with women in the lowest quartile (OR8.75, 95%CI 2.43, 31.58). More importantly, incorporating ANGPTL8 into the conventional prediction model significantly increased the AUC for prediction of GDM (0.772vs 0.725; p = 0.019). CONCLUSIONS Our study suggests that ANGPTL8 levels in early pregnancy are significantly and independently associated with risk of GDM at 24-28 weeks of gestation. Combining ANGPTL8 levels with conventional risk factors could thus improve the prediction of GDM.
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Affiliation(s)
- Yun Huang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Xin Chen
- Department of Gynaecology and Obstetrics, The Second Affiliated Hospital of Soochow University, Jiangsu, People's Republic of China
| | - Xiaohong Chen
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Yu Feng
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Heming Guo
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Sicheng Li
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Ting Dai
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Rong Jiang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Xiaoyan Zhang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China
| | - Chen Fang
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China.
| | - Ji Hu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, Jiangsu, People's Republic of China.
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Luo M, Peng D. ANGPTL8: An Important Regulator in Metabolic Disorders. Front Endocrinol (Lausanne) 2018; 9:169. [PMID: 29719529 PMCID: PMC5913278 DOI: 10.3389/fendo.2018.00169] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 03/28/2018] [Indexed: 12/26/2022] Open
Abstract
Long-term controversy regarding the role of angiopoietin-like protein 8 (ANGPTL8) in beta-cell proliferation and diabetes progression made it a research spotlight. Recently, the controversy was resolved. Although ANGPTL8 could not control beta-cell expansion and islet function, ANGPTL8 was still considered as a novel but atypical member in the ANGPTL family because of its unique structure and crucial effects on lipid metabolism. Besides, ANGPTL8 also participated in some other disorders such as non-alcoholic fatty liver disease and renal dysfunction. Understanding the features of ANGPTL8 may offer new diagnostic and therapeutic approaches to metabolic-related diseases. Therefore, we reviewed most recent findings about ANGPTL8 and aimed to provide an integrated picture of ANGPTL8.
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Mysore R, Ortega FJ, Latorre J, Ahonen M, Savolainen-Peltonen H, Fischer-Posovszky P, Wabitsch M, Olkkonen VM, Fernández-Real JM, Haridas PAN. MicroRNA-221-3p Regulates Angiopoietin-Like 8 (ANGPTL8) Expression in Adipocytes. J Clin Endocrinol Metab 2017; 102:4001-4012. [PMID: 28938482 DOI: 10.1210/jc.2017-00453] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 08/25/2017] [Indexed: 02/13/2023]
Abstract
CONTEXT Angiopoietin-like 8 (ANGPTL8) has been identified as a key regulator of lipid metabolism. DESIGN We addressed the correlation between ANGPTL8 messenger RNA (mRNA) with hallmark insulin-regulated and lipogenic genes in human adipose tissue (AT). The regulation of ANGPTL8 expression in adipocytes was studied after inflammatory challenge, and the role of microRNA (miRNA)-221-3p therein was investigated. RESULTS ANGPTL8 gene expression in subcutaneous AT (SAT) and visceral AT (VAT) was highly correlated with SLC2A4/GLUT4, ADIPOQ, fatty acyl synthase, and diacylglycerol O-acyltransferase 1. ANGPTL8 mRNA in human adipocytes was suppressed by the inflammatory impact of conditioned medium of lipopolysaccharide-stimulated macrophages, which markedly induced miR-221-3p. MiR-221-3p was shown to target the ANGPTL8 mRNA, and to reduce adipocyte ANGPTL8 protein expression. Analysis of SAT biopsies from 69 subjects ranging from lean to morbidly obese and of VAT of 19 female subjects biopsied during gynecologic surgery demonstrated a trend of negative correlation between ANGPTL8 and miR-221-3p. Significant negative correlation of ANGPTL8 and miR-221-3p was identified in presurgery SAT samples from 22 morbidly obese subjects undergoing bariatric surgery, but vanished after ∼2-year surgery-induced weight loss, which also resulted in a marked reduction of miR-221-3p. ANGPTL8 correlated negatively with the AT inflammatory gene phospholipase A2 G7, whereas miR-221-3p showed a significant positive correlation with this marker. Of note, no correlation was found between AT ANGPTL8 mRNA expression and plasma ANGPTL8. CONCLUSIONS The inflammation-induced miR-221-3p regulates ANGPTL8 expression in adipocytes. This miRNA impact may become especially prominent under pathologic conditions such as morbid obesity, putatively contributing to the impaired AT lipid metabolism in metabolic disease.
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Affiliation(s)
- Raghavendra Mysore
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, FI-00290 Helsinki, Finland
| | - Francisco J Ortega
- Department of Diabetes, Endocrinology, and Nutrition, Institut d'Investigació Biomèdica de Girona (IdIBGi), ES-17190 Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CB06/03) and Instituto de Salud Carlos III, ES-28029 Madrid, Spain
| | - Jèssica Latorre
- Department of Diabetes, Endocrinology, and Nutrition, Institut d'Investigació Biomèdica de Girona (IdIBGi), ES-17190 Girona, Spain
| | - Maria Ahonen
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, FI-00290 Helsinki, Finland
| | - Hanna Savolainen-Peltonen
- University of Helsinki and Helsinki University Hospital, Obstetrics and Gynecology, FI-00029 HUS, Helsinki, Finland
- Folkhälsan Research Center, Biomedicum 1, FI-00290 Helsinki, Finland
| | - Pamela Fischer-Posovszky
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, D-89075 Ulm, Germany
| | - Martin Wabitsch
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, D-89075 Ulm, Germany
| | - Vesa M Olkkonen
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, FI-00290 Helsinki, Finland
- Department of Anatomy, Faculty of Medicine, FI-00014 University of Helsinki, Finland
| | - José M Fernández-Real
- Department of Diabetes, Endocrinology, and Nutrition, Institut d'Investigació Biomèdica de Girona (IdIBGi), ES-17190 Girona, Spain
- CIBER de la Fisiopatología de la Obesidad y la Nutrición (CB06/03) and Instituto de Salud Carlos III, ES-28029 Madrid, Spain
| | - P A Nidhina Haridas
- Minerva Foundation Institute for Medical Research, Biomedicum 2U, FI-00290 Helsinki, Finland
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Abu-Farha M, Abubaker J, Tuomilehto J. ANGPTL8 (betatrophin) role in diabetes and metabolic diseases. Diabetes Metab Res Rev 2017; 33. [PMID: 28722798 DOI: 10.1002/dmrr.2919] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 05/30/2017] [Accepted: 07/04/2017] [Indexed: 12/22/2022]
Abstract
Diabetes is a major disease worldwide that is reaching epidemic levels. Its increased prevalence as well as its association with a high number of complications such as cardiovascular diseases, nephropathy, and retinopathy makes it an important disease for investigation. ANGPTL8 is a recently identified hormone that has been associated with two functionally important processes in the development of type 2 diabetes, insulin resistance as well as lipid metabolism. Initial work has shown that ANGPTL8 was expressed in liver, white adipose, and brown adipose tissues. ANGPTL8 regulates the activity of lipoprotein lipase, which is a key enzyme in lipoprotein lipolysis pathway through its direct interaction with ANGPTL3. It has been also reported that it regulates the replication of β-cells in response to insulin resistance. As a result, many recent studies have focused on the association of ANGPTL8 with diabetes and obesity as well as its association with various metabolic markers in order to better understand its physiological role in glucose homeostasis and lipid metabolism. In this review, we will highlight some of the key clinical findings, mainly from human studies, that investigated the role of ANGPTL8 in metabolic diseases such as diabetes, obesity, and the metabolic syndrome.
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Affiliation(s)
- Mohamed Abu-Farha
- Biochemistry and Molecular Biology Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
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Roth CL, Elfers C, Lass N, Reinehr T. Betatrophin: no relation to glucose metabolism or weight status in obese children before and after lifestyle intervention. Pediatr Diabetes 2017; 18:485-491. [PMID: 27402552 DOI: 10.1111/pedi.12412] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/02/2016] [Accepted: 06/03/2016] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE The influences of obesity, glucose metabolism, gender, and puberty on betatrophin levels and the longitudinal relationships between weight loss, metabolic changes and betatrophin have not yet been studied in childhood. METHODS Cross-sectional and longitudinal analysis of weight status (standard deviation score-body mass index (SDS-BMI)), homeostasis model assessment insulin resistance (HOMA-IR), gender, and pubertal stage were evaluated in 69 obese children (51% female, age 11.9 ± 2.0 years) participating in lifestyle intervention over a 1-year period. An oral glucose tolerance test was performed in 53 of the 69 children. Twenty normal weight children (50% female, age 12.3 ± 3.0 years) served as controls. RESULTS Circulating betatrophin did not differ significantly between obese and lean children (1.99 ± 0.90 vs 2.35 ± 0.28, mean ± SD, P = .155). At baseline, betatrophin did not differ in obese patients with vs without glucose intolerance (1.89 ± 0.96 vs 2.031 ± 0.91 ng/mL; P = .591) and obese with (delta SDS-BMI >0.4) vs without successful obesity intervention (1.89 ± 0.94 vs. 2.07 ± 0.87 ng/mL; P = 0.396). In multiple linear regression analyses, pubertal stage was associated with betatrophin (b: 0.48, P = .027), while gender, age, BMI, blood pressure, fasting glucose, HOMA-IR, triglycerides, LDL- and HDL-cholesterol were not related to betatrophin at baseline. At the end of the 1-year intervention, changes of betatrophin were not significantly associated with any parameter after controlling for multiple covariates including age and changes of pubertal stages. CONCLUSIONS Our data do not support a relationship between betatrophin and weight status or glucose tolerance, insulin resistance, and lipid metabolism in children.
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Affiliation(s)
- Christian L Roth
- Seattle Children's Research Institute, University of Washington, Seattle
| | - Clinton Elfers
- Seattle Children's Research Institute, University of Washington, Seattle
| | - Nina Lass
- Department of Pediatric Endocrinology, Diabetes and Nutrition Medicine, Vestische Hospital for Children and Adolescents Datteln, University of Witten/Herdecke, Witten, Germany
| | - Thomas Reinehr
- Department of Pediatric Endocrinology, Diabetes and Nutrition Medicine, Vestische Hospital for Children and Adolescents Datteln, University of Witten/Herdecke, Witten, Germany
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31
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Insulin upregulates betatrophin expression via PI3K/Akt pathway. Sci Rep 2017; 7:5594. [PMID: 28717133 PMCID: PMC5514142 DOI: 10.1038/s41598-017-06052-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 06/07/2017] [Indexed: 12/24/2022] Open
Abstract
Betatrophin is regarded as a liver-produced hormone induced by insulin resistance (IR). However, it remains largely unknown how IR regulates betatrophin expression. To study whether IR could regulate betatrophin expression and the corresponding molecular mechanisms, betatrophin levels were examined in 6 in vitro IR models which were established using human hepatocytes L02 with different agents, including tumor necrosis factor-α, interleukin-1β, dexamethasone, palmitate, high glucose and insulin and betatrophin levels were elevated only in the insulin group. These results suggest that it is insulin, not IR that promotes betatrophin expression. In the meantime, PI3K/Akt pathway was activated by insulin and suppressed by above agents that caused IR. Insulin-upregulated betatrophin expression was suppressed by PI3K/Akt inhibitors and IR, suggesting that insulin upregulates and IR decreases betatrophin production through PI3K/Akt pathway. Consistently, the treatment of insulin in mice dose-dependently upregulated betatrophin levels, and the administration of metformin in IR mice also stimulated betatrophin production since published study showed metformin improved PI3K/Akt pathway and IR. In humans, compared with those without insulin treatment, serum betatrophin levels were increased in type 2 diabetic patients with insulin treatment. In conclusion, insulin stimulates betatrophin secretion through PI3K/Akt pathway and IR may play an opposite role.
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Maurer L, Schwarz F, Fischer-Rosinsky A, Schlueter N, Brachs S, Möhlig M, Pfeiffer A, Mai K, Spranger J, Bobbert T. Renal function is independently associated with circulating betatrophin. PLoS One 2017; 12:e0173197. [PMID: 28257453 PMCID: PMC5336269 DOI: 10.1371/journal.pone.0173197] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 02/16/2017] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Betatrophin has been identified as a marker linking liver with beta cell function and lipid metabolism in murine models. Until now, the regulation of circulating betatrophin in humans is not entirely clear. We here analyzed the relation of betatrophin levels to phenotypes of the metabolic syndrome and speculated that renal function might influence circulating betatrophin levels and explain age-dependent changes of betatrophin. SUBJECTS We analyzed blood samples from 535 individuals participating in the Metabolic Syndrome Berlin Potsdam study. RESULTS In a crude analysis we found a positive correlation between betatrophin levels and HbA1c (r = 0.24; p < 0.001), fasting glucose (r = 0.20; p < 0.001) and triglycerides (r = 0.12; p = 0.007). Furthermore betatrophin was positively correlated with age (r = 0.47; p <0.001), systolic blood pressure (r = 0.17; p < 0.001), intima media thickness (r = 0.26; p < 0.001) and negatively correlated with CKD-EPI eGFR (r = -0.33; p < 0.001) as an estimate of renal function. Notably, eGFR remained highly associated with betatrophin after adjustment for age, waist circumference, gender, HbA1c and lipid parameters in a multivariate linear regression model (β = -0.197, p< 0.001). CONCLUSIONS Our data suggest that circulating levels of betatrophin depend on age, gender, waist circumference, total/HDL cholesterol ratio and renal function. Especially the association to eGFR highlights the importance for future studies to address renal function as possible influence on betatrophin regulation and consider eGFR as potential confounder when analyzing the role of betatrophin in humans.
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Affiliation(s)
- Lukas Maurer
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Zentrum, Berlin-Buch, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Franziska Schwarz
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Antje Fischer-Rosinsky
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Zentrum, Berlin-Buch, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Nina Schlueter
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Sebastian Brachs
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Matthias Möhlig
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Andreas Pfeiffer
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
- Dept. of Clinical Nutrition, German Institute of Human Nutrition, Nuthetal, Germany
| | - Knut Mai
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Zentrum, Berlin-Buch, Germany
| | - Joachim Spranger
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin and Max-Delbrück Zentrum, Berlin-Buch, Germany
- Charité Center for Cardiovascular Research (CCR), Charité-Universitätsmedizin Berlin, Berlin, Germany
- * E-mail:
| | - Thomas Bobbert
- Dept. of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Sahin Ersoy G, Altun Ensari T, Vatansever D, Emirdar V, Cevik O. Novel adipokines WISP1 and betatrophin in PCOS: relationship to AMH levels, atherogenic and metabolic profile. Gynecol Endocrinol 2017; 33:119-123. [PMID: 27690684 DOI: 10.1080/09513590.2016.1223286] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To determine the levels of WISP1 and betatrophin in normal weight and obese women with polycystic ovary syndrome (PCOS) and to assess their relationship with anti-Müllerian hormone (AMH) levels, atherogenic profile and metabolic parameters Methods: In this prospective cross-sectional study, the study group was composed of 49 normal weighed and 34 obese women with PCOS diagnosed based on the Rotterdam criteria; 36 normal weight and 26 obese age matched non-hyperandrogenemic women with regular menstrual cycle. Serum WISP1, betatrophin, homeostasis model assessment of insulin resistance (HOMA-IR) and AMH levels were evaluated. Univariate and multivariate analyses were performed between betatrophin, WISP1 levels and AMH levels, metabolic and atherogenic parameters. RESULTS Serum WISP1 and betatrophin values were elevated in the PCOS group than in the control group. Moreover, serum WISP1 and betatrophin levels were higher in the obese PCOS subgroup than in normal weight and obese control subgroups. Multivariate analyses revealed that Body mass index, HOMA-IR, AMH independently and positively predicted WISP1 levels. Serum betatrophin level variability was explained by homocysteine, HOMA-IR and androstenedione levels. CONCLUSION WISP1 and betatrophin may play a key role on the pathogenesis of PCOS.
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Affiliation(s)
- Gulcin Sahin Ersoy
- a Department of Obstetrics and Gynecology , Kartal Dr. Lutfi Kirdar Education and Research Hospital , Istanbul , Turkey
| | - Tugba Altun Ensari
- b Department of Obstetrics and Gynecology , Etlik Zubeyde Hanim Women's Health Education and Research Hospital , Ankara , Turkey
| | - Dogan Vatansever
- a Department of Obstetrics and Gynecology , Kartal Dr. Lutfi Kirdar Education and Research Hospital , Istanbul , Turkey
| | - Volkan Emirdar
- c Department of Obstetrics and Gynecology , Izmir University , Izmir , Turkey , and
| | - Ozge Cevik
- d Department of Biochemistry , Faculty of Pharmacy, Cumhuriyet University , Sivas , Turkey
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Kong FJ, Ma LL, Li G, Chen YX, Zhou JQ. Circulating Betatrophin Levels and Gestational Diabetes Mellitus: A Systematic Review and Meta-Analysis. PLoS One 2017; 12:e0169941. [PMID: 28081192 PMCID: PMC5231180 DOI: 10.1371/journal.pone.0169941] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/23/2016] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE The association between circulating betatrophin levels and gestational diabetes mellitus (GDM) is controversial. The aim of our study was to systematically review available literature linking betatrophin to GDM for a comprehensive understanding of the relationship between circulating betatrophin levels and GDM in human. METHODS PubMed, The Cochrane Library, Medline and CNKI were searched for studies published up to August 2016. Manual searches of references of the relevant original studies were conducted. Pooled estimates were measured using the fixed or random effect model. Overall effect was reported in a standard mean difference (SMD). All data were analyzed with Review Manager 5.3 and Stata 12.0. RESULTS Of 25 references reviewed, 8 studies met our inclusion criteria and contributed to meta-analysis. All the studies were used to evaluate the relationship between betatrophin levels in blood and GDM. Betatrophin levels were significantly elevated in women with GDM compared with those without GDM (SMD = 1.05; 95% CI: 0.41-1.68, P = 0.001). This evidence was more consistent among women with betatrophin blood draw during the third trimester (SMD = 1.3, 95% CI: 1-1.61, P < 0.001) and for women BMI ≥ 28 kg/m2 (SMD = 1.53, 95% CI: 1.30-1.75, P < 0.001). CONCLUSIONS The evidences from this meta-analysis indicated that the levels of circulating betatrophin were significantly elevated among women with GDM compared with women with normal glucose tolerance, especially with BMI ≥ 28 kg/m2 and in the third trimester.
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Affiliation(s)
- Fei-Juan Kong
- Department of Endocrinology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lei-Lei Ma
- Department of Critical Care Medicine, Zhejiang Provincial People's Hospital, Hangzhou, China
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ge Li
- Department of Endocrinology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yi-Xin Chen
- Department of Endocrinology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jia-Qiang Zhou
- Department of Endocrinology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- * E-mail:
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Adamska A, Łebkowska A, Jacewicz M, Krentowska A, Hryniewicka J, Wołczyński S, Górska M, Kowalska I. Serum Concentrations of Betatrophin and Its Association with Indirect Indices of Insulin Resistance and Beta Cell Function in Women with Polycystic Ovary Syndrome. Int J Endocrinol 2017; 2017:2316986. [PMID: 28702052 PMCID: PMC5494124 DOI: 10.1155/2017/2316986] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 04/27/2017] [Accepted: 05/04/2017] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Data underline the role of betatrophin in glucose homeostasis. Polycystic ovary syndrome (PCOS) is characterized by insulin resistance (IR). The aim of our study was to investigate the relationship of serum betatrophin concentrations with indirect indices of IR and insulin secretion in women with PCOS, compared to the control group. METHODS The study group comprised 43 women with PCOS and 16 controls. IR was assessed by HOMA-IR and Matsuda index. Insulin secretion was evaluated with HOMA-B. An oral glucose tolerance test (OGTT) with estimation of serum betatrophin concentrations was performed. RESULTS Glucose load resulted in an increase in serum betatrophin concentrations in the control group (p = 0.02). Serum betatrophin concentrations at 120 min of OGTT were lower in women with PCOS than in the control group (p = 0.02). We observed positive correlations between baseline serum betatrophin concentrations and HOMA-IR (r = 0.39, p = 0.008), negative correlations with Matsuda index (r = -0.31, p = 0.004), and a positive relationship with HOMA-B (r = 0.38, p = 0.01) in women with PCOS. Multiple regression analysis revealed that HOMA-B (β = 0.47, p = 0.001) was an independent factor connected to serum betatrophin levels in PCOS. CONCLUSIONS Serum concentrations of betatrophin are connected with insulin resistance and beta cell function and did not change after glucose load in women with PCOS.
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Affiliation(s)
- Agnieszka Adamska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
- *Agnieszka Adamska:
| | - Agnieszka Łebkowska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
| | - Małgorzata Jacewicz
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
| | - Anna Krentowska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
| | - Justyna Hryniewicka
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
| | - Sławomir Wołczyński
- Department of Reproduction and Gynecological Endocrinology, Medical University of Białystok, Białystok, Poland
| | - Maria Górska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
| | - Irina Kowalska
- Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Białystok, Białystok, Poland
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Abstract
Lipoprotein lipase (LPL) is a rate-limiting enzyme for hydrolysing circulating triglycerides (TG) into free fatty acids that are taken up by peripheral tissues. Postprandial LPL activity rises in white adipose tissue (WAT), but declines in the heart and skeletal muscle, thereby directing circulating TG to WAT for storage; the reverse is true during fasting. However, the mechanism for the tissue-specific regulation of LPL activity during the fed–fast cycle has been elusive. Recent identification of lipasin/angiopoietin-like 8 (Angptl8), a feeding-induced hepatokine, together with Angptl3 and Angptl4, provides intriguing, yet puzzling, insights, because all the three Angptl members are LPL inhibitors, and the deficiency (overexpression) of any one causes hypotriglyceridaemia (hypertriglyceridaemia). Then, why does nature need all of the three? Our recent data that Angptl8 negatively regulates LPL activity specifically in cardiac and skeletal muscles suggest an Angptl3-4-8 model: feeding induces Angptl8, activating the Angptl8–Angptl3 pathway, which inhibits LPL in cardiac and skeletal muscles, thereby making circulating TG available for uptake by WAT, in which LPL activity is elevated owing to diminished Angptl4; the reverse is true during fasting, which suppresses Angptl8 but induces Angptl4, thereby directing TG to muscles. The model suggests a general framework for how TG trafficking is regulated.
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Affiliation(s)
- Ren Zhang
- Center for Molecular Medicine and Genetics, School of Medicine, Wayne State University, 540 East Canfield Street, Detroit, MI 48201, USA
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Cahová M, Habart D, Olejár T, Berková Z, Papáčková Z, Daňková H, Lodererova A, Heczková M, Saudek F. Lipasin/betatrophin is differentially expressed in liver and white adipose tissue without association with insulin resistance in Wistar and Goto-Kakizaki rats. Physiol Res 2016; 66:273-281. [PMID: 27982676 DOI: 10.33549/physiolres.933339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Lipasin is a recently identified lipokine expressed predominantly in liver and in adipose tissue. It was linked to insulin resistance in mice and to type 1 and type 2 diabetes (T1D, T2D) in humans. No metabolic studies concerning lipasin were performed yet in rats. Therefore, we used rat model of T2D and insulin resistance, Goto-Kakizaki (GK) rats, to determine changes of lipasin expression in liver and in white adipose tissue (WAT) over 52 weeks in the relation to glucose tolerance, peripheral tissue insulin sensitivity and adiposity. GK rats were grossly glucose intolerant since the age of 6 weeks and developed peripheral insulin resistance at the age of 20 weeks. Expression of lipasin in the liver did not differ between GK and Wistar rats, declining with age, and it was not related to hepatic triacylglycerol content. In WAT, the lipasin expression was significantly higher in Wistar rats where it correlated positively with adiposity. No such correlation was found in GK rats. In conclusion, lipasin expression was associated neither with a mild age-related insulin resistance (Wistar), nor with severe genetically-based insulin resistance (GK).
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Affiliation(s)
- M Cahová
- Centre for Experimental Medicine, Department of Metabolism and Diabetes, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Angiopoietin-like protein 8 (ANGPTL8) in pregnancy: a brown adipose tissue-derived endocrine factor with a potential role in fetal growth. Transl Res 2016; 178:1-12. [PMID: 27469268 DOI: 10.1016/j.trsl.2016.06.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/27/2016] [Accepted: 06/30/2016] [Indexed: 12/21/2022]
Abstract
Angiopoietin-like protein 8 (ANGPTL8), a protein implicated in lipid and glucose homeostasis, is present only in mammals, suggesting that it is involved in processes unique to these vertebrates such as pregnancy and homeothermy. We explored the role of ANGPTL8 in maternal-fetal crosstalk and its relationship with newborn adiposity. In a longitudinal analysis of healthy pregnant women, ANGPTL8 levels decreased progressively during pregnancy although remained higher than levels in the postpartum period. In a cross-sectional observational study of women with or without gestational diabetes mellitus (GDM), and their offspring, ANGPTL8 levels were higher in venous cord blood than those in maternal blood and were significantly lower in GDM patients than those in healthy women. Infants small for gestational age and with low-fat mass had the highest ANGPTL8 cord blood levels. Studies in vitro revealed that ANGPTL8 was secreted by brown adipocytes and its expression was increased in experimental models of white-to-brown fat conversion. In addition, ANGPTL8 induced the expression of markers of brown adipocytes. The high levels of ANGPTL8 found in fetal life together with its relationship with newborn adiposity and brown adipose tissue point to ANGPTL8 as a potential new player in the modulation of the thermogenic machinery during the fetal-neonatal transition.
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Zielińska A, Maciulewski R, Siewko K, Popławska-Kita A, Lipińska D, Kozłowska G, Górska M, Szelachowska M. Levels of betatrophin decrease during pregnancy despite increased insulin resistance, beta-cell function and triglyceride levels. DIABETES & METABOLISM 2016; 42:409-415. [DOI: 10.1016/j.diabet.2016.07.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 06/21/2016] [Accepted: 07/14/2016] [Indexed: 01/11/2023]
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Sahin Ersoy G, Altun Ensari T, Subas S, Giray B, Simsek EE, Cevik O. WISP1 is a novel adipokine linked to metabolic parameters in gestational diabetes mellitus. J Matern Fetal Neonatal Med 2016; 30:942-946. [DOI: 10.1080/14767058.2016.1192118] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Xie X, Gao H, Wu S, Zhao Y, Du C, Yuan G, Ning Q, McCormick K, Luo X. Increased Cord Blood Betatrophin Levels in the Offspring of Mothers with Gestational Diabetes. PLoS One 2016; 11:e0155646. [PMID: 27196053 PMCID: PMC4873017 DOI: 10.1371/journal.pone.0155646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 05/02/2016] [Indexed: 02/06/2023] Open
Abstract
Aim Exposing a fetus to hyperglycemia can increase the risk for later-life metabolic disorders. Betatrophin has been proposed as a key regulator of pancreatic beta cell proliferation and lipid regulation. Highly responsive to nutritional signals, serum betatrophin concentrations have been found to be altered by various physiological and pathological conditions. We hypothesized that betatrophin levels are increased in the cord blood in offspring exposed to intrauterine hyperglycemia. Methods This was a cross-sectional study including 54 mothers who underwent uncomplicated Cesarean delivery in a university hospital. Maternal gestational glucose concentration was determined at 24–48 weeks gestation after a 75-g OGTT. Cord blood and placental tissue was collected immediately post delivery. Metabolic parameters were determined in the Clinical Laboratory. Cord blood betatrophin levels were assayed using a commercially available ELISA kit. Placental mitochondrial content was determined by real-time PCR. Results Cord blood betatrophin levels were increased in the gestational diabetes mellitus (GDM) group compared with the normoglycemic group. Furthermore, betatrophin levels were positively correlated with maternal gestational 2h post-OGTT glucose, cord blood insulin, HOMA-IR, and inversely correlated with placental mitochondrial content. Conclusions Cord blood betatrophin may function as a potential biomarker of maternal intrauterine hyperglycemia and fetal insulin resistance, which may presage for long-term metabolic impact of GDM on offspring.
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Affiliation(s)
- Xuemei Xie
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, PR China
- Department of Pediatrics, Division of Endocrinology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Hongjie Gao
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shimin Wu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Zhao
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Caiqi Du
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guandou Yuan
- Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi, 541001, P.R. China
| | - Qin Ning
- Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kenneth McCormick
- Department of Pediatrics, Division of Endocrinology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Xiaoping Luo
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- * E-mail:
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Abu-Farha M, Al Madhoun A, Abubaker J. The Rise and the Fall of Betatrophin/ANGPTL8 as an Inducer of β-Cell Proliferation. J Diabetes Res 2016; 2016:4860595. [PMID: 27672665 PMCID: PMC5031879 DOI: 10.1155/2016/4860595] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 12/14/2022] Open
Abstract
Diabetes is a global health problem that is caused by impaired insulin production from pancreatic β-cells. Efforts to regenerate β-cells have been advancing rapidly in the past two decades with progress made towards identifying new agents that induce β-cells regeneration. ANGPTL8, also named betatrophin, has been recently identified as a hormone capable of inducing β-cells proliferation and increasing β-cells mass in rodents. Its discovery has been cherished as a breakthrough and a game changer in the field of β-cells regeneration. Initially, ANGPTL8 has been identified as atypical member of the angiopoietin-like protein family as a regulator of triglyceride in plasma through its interaction with ANGPTL3 and its regulation of lipoprotein lipase activity. In this review, we will review literature on the proposed role of ANGPTL8 in β-cells proliferation, the controversy regarding this role, and the emerging data questioning its involvement in β-cells proliferation. Additionally we will discuss new clinical data that describes its role in diabetes and the putative therapeutic targeting of this protein.
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Affiliation(s)
- Mohamed Abu-Farha
- Biochemistry and Molecular Biology Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
- *Mohamed Abu-Farha: and
| | | | - Jehad Abubaker
- Biochemistry and Molecular Biology Unit, Dasman Diabetes Institute, Kuwait City, Kuwait
- *Jehad Abubaker:
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