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Yin R, Zhang N, Zhang D, Zhao W, Ke J, Zhao D. Higher levels of circulating ANGPTL2 are associated with macular edema in patients with type 2 diabetes. Medicine (Baltimore) 2021; 100:e24638. [PMID: 33578584 PMCID: PMC7886454 DOI: 10.1097/md.0000000000024638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 01/15/2021] [Indexed: 01/05/2023] Open
Abstract
Macular edema (ME) is an inflammatory disease characterized by increased microvascular permeability. Here, we proposed that plasma angiopoietin-like protein 2 (ANGPTL2) level may be related to the severity of ME patients with type 2 diabetes mellitus (T2DM). In this cross-sectional study, 172 T2DM patients were recruited and divided into clinically significant macular edema (CSME), non-CSME (nCSME), and control groups. Serum ANGPTL2 level was quantified by ELISA and best corrected vision acuity (BCVA) was detected. After adjust age, sex, body mass index (BMI), and duration of diabetes variables, ANGPTL2 performed statistics difference among CSME-, nCSME-groups, and control group (4.46 [3.97, 4.96, 95%CI] ng/mL in CSME group, 3.80 [3.42, 4.18, 95%CI] ng/mL in nCSME-group, 3.33 [3.03, 3.63, 95%CI] ng/mL in control, P < .01). After adjustment of confounding factors, high levels of circulating ANGPTL2 were related with the diagnosis of ME, BCVA, and C reactive protein (CRP) through univariate regression analysis (P < .05). Meanwhile, in the multiple regression model, ANGPTL2 took the mainly effect proportion for the diagnosis of diabetic macular edema (DME), with a LogWorth value 3.559 (P < .001). Our study suggested that elevated circulating ANGPTL2 may be associated with the development of DME and the severity of visual impairment in patients with type 2 diabetes.
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Affiliation(s)
- Ruili Yin
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University
- Beijing Key Laboratory of Diabetes Research and Care
| | - Ning Zhang
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University
- Beijing Key Laboratory of Diabetes Research and Care
| | - Dawei Zhang
- Department of Ophthalmology, Beijing Luhe Hospital Capital Medical University, Beijing, 101149, China
| | - Wenying Zhao
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University
| | - Jing Ke
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University
| | - Dong Zhao
- Center for Endocrine Metabolism and Immune Diseases, Beijing Luhe Hospital, Capital Medical University
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Kenawy MZ, Sabry JH, Akl EM, Emam NAH. Angiopoietin-like protein 2 in psoriasis: a new linkage with metabolic syndrome. Postepy Dermatol Alergol 2020; 37:86-91. [PMID: 32467690 DOI: 10.5114/ada.2018.79225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/08/2018] [Indexed: 12/29/2022] Open
Abstract
Introduction Psoriasis is a chronic disease of inflammatory nature which can be considered as a systemic disorder. Metabolic syndrome is prevalent in psoriatic patients, with a negative impact on disease severity. Angiopoietin-like protein 2 (ANGPTL2) role has been investigated in several chronic inflammatory conditions, but not in psoriasis. Aim To evaluate the serum level of ANGPTL2 and its possible role in the occurrence of metabolic syndrome in psoriatic patients. Material and methods This study enrolled 180 participants divided into two groups: psoriatic group (120 patients with chronic plaque psoriasis) and control group (60 normal subjects). Psoriasis severity was determined by the psoriasis area severity index. Anthropometric measurements, lipid profile, fasting blood sugar and ANGPTL2 have been evaluated in both groups. Results Psoriatic patients had a higher body mass index (p = 0.014), waist circumference (p < 0.001), and blood pressure than controls (p Ł 0.001). Fasting blood sugar and the serum level of ANGPTL2 were also higher in psoriatic patients than in controls (p < 0.001, 0.025, respectively). In addition, the serum level of ANGPTL2 was significantly correlated with both disease severity (p < 0.001) and occurrence of metabolic syndrome (p < 0.001). Conclusions Serum ANGPTL2 is elevated in psoriasis patients compared to normal subjects. Serum ANGPTL2 elevation may have a role in chronic inflammatory status in psoriasis and occurrence of metabolic syndrome.
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Wang X, Hu Z, Wang Z, Cui Y, Cui X. Angiopoietin-like protein 2 is an important facilitator of tumor proliferation, metastasis, angiogenesis and glycolysis in osteosarcoma. Am J Transl Res 2019; 11:6341-6355. [PMID: 31737187 PMCID: PMC6834488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Background: Solid tumors are often exposed to hypoxia. Hypoxia inducible factor (HIF-1α) upregulates numerous target genes associated with the malignant behavior of hypoxic cancer cells. Angiopoietin-like protein 2 (Angptl2), a member of the angiopoietin family, is a hypoxia-inducible gene. However, the role and potential mechanism of Angptl2, and the relationship between Angptl2 and hypoxia in osteosarcoma (OS) remain unclear. Methods: In this study, quantitative RT-PCR was performed to detect the levels of Angptl2 and HIF-1α, and western blot assay was performed to measure the expression of Angptl2, HIF-1α, CDK2, cyclin E1, P21, MMP2, MMP9, VEGFA, Ang II and HK2 in osteosarcoma cells and tissue. Subsequently, cell viability and cycle were analyzed using CCK-8 and flow cytometer assays. Cell migration, invasion and glycolysis were analyzed with Transwell, Scratch Test and glucose/lactic acid detection kits, respectively. Experiments in vivo were performed to value the effects of Angptl2 on the growth of osteosarcoma xenografts in mice. Immunofluorescent and immunohistochemistry staining were conducted to detect the expression of Ki-67 and Angptl2, respectively. Results: The results demonstrated that Angptl2 was highly expressed in OS cells, which was induced by hypoxia (HIF-1α). Additionally, Angptl2 overexpression regulated cell proliferation, invasion, migration and G1 phase arrest in OS cells. Moreover, Angptl2 promoted OS tumor growth in vivo tumor xenografts. Angptl2 might enhance angiogenesis and glycolysis by promoting VEGFA, Ang II and HK2 both in vitro and in vivo. Conclusion: In conclusion, the present findings indicated that hypoxia-induced Angptl2 expression was independent of HIF-1α in hypoxic OS cells. Angptl2 might promote OS cell proliferation, metastasis, angiogenesis and glycolysis, which could be regarded as a favorable marker for predicting a long survival time in patients with OS.
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Affiliation(s)
- Xiuhui Wang
- Department of Orthopedics, Zhoupu Hospital Affiliated to Shanghai University of Medicine and Health SciencesShanghai 201318, China
| | - Zhaohui Hu
- Department of Orthopedics, Liuzhou People’s HospitalNo. 8 Wenchang Road, Liuzhou 545006, Guangxi, China
| | - Zhe Wang
- Department of Orthopedics, Zhongshan Hospital, Fudan UniversityShanghai 200032, China
| | - Yin Cui
- Department of Orthopedics, Zhoupu Hospital Affiliated to Shanghai University of Medicine and Health SciencesShanghai 201318, China
| | - Xu Cui
- Department of Orthopedics, Zhoupu Hospital Affiliated to Shanghai University of Medicine and Health SciencesShanghai 201318, China
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Huang H, Ni H, Ma K, Zou J. ANGPTL2 regulates autophagy through the MEK/ERK/Nrf-1 pathway and affects the progression of renal fibrosis in diabetic nephropathy. Am J Transl Res 2019; 11:5472-5486. [PMID: 31632523 PMCID: PMC6789235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Diabetic nephropathy (DN) is one of the most important microvascular complications of diabetes mellitus. The present study aims to explore whether angiopoietin-like protein 2 (ANGPTL2) can promote renal tissue fibrosis in DN. MATERIALS AND METHODS Models includes diabetic SD rats induced by streptozotocin (STZ) and high glucose (HG)-stimulated HK-2 cells. qRT-PCR, western blot and immunohistochemical analysis were performed to explore ANGPTL2 expression. The renal injury and fibrosis were assessed using hematoxylin-eosin staining (H&E) and Masson trichrome staining. Immunofluorescence was conducted to detect the expression of collagen IV and LC3II. The levels of pro-inflammatory factors IL-6, -1β, TNF-α and ANGPTL2 were assessed by an ELISA, and nitric oxide (NO) production was determined using Griess method. Protein levels of iNOS, PTEN, fibronectin (FN), collagen I, IV, p62, beclin1 and MEK/ERK/Nrf-1 pathway in DN rats and HK-2 cells were determined, respectively. RESULTS When compared with normal rats, DN rats experienced severe renal injury and fibrosis and showed decreased LC3II and beclin1, increased PTEN, FN, collagen I and IV, p62, NO, iNOS and ANGPTL2 in kidney. The pro-inflammatory factors and ANGPTL2 were markedly elevated. Again, knockdown of ANGPTL2 caused an increase in MEK, p-ERK, Nrf-1, LC3II, beclin1, and a decrease in PTEN, FN, collagen I and IV, p62, NO, iNOS and pro-inflammatory factors of HK-2 cells. Furthermore, knockdown of MEK/ERK reversed these changes. CONCLUSION ANGPTL2 may serve an important role in the autophagy of DN and activate MEK/ERK/Nrf-1 pathway, which may therefore have potential as a treatment to prevent renal fibrosis in DN.
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Affiliation(s)
- Haiquan Huang
- Department of Geriatrics, Zhongda Hospital Affiliated with Southeast UniversityNanjing 210009, Jiangsu, China
| | - Haifeng Ni
- Department of Nephrology, Zhongda Hospital Affiliated with Southeast UniversityNanjing 210009, Jiangsu, China
| | - Kunling Ma
- Department of Nephrology, Zhongda Hospital Affiliated with Southeast UniversityNanjing 210009, Jiangsu, China
| | - Jihong Zou
- Department of Geriatrics, Zhongda Hospital Affiliated with Southeast UniversityNanjing 210009, Jiangsu, China
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Serag WM, Mohamed MM, Elsayed BE, Abd-Elhamed SM. Determination of liver fibrosis stages in Egyptian chronic hepatitis B patients by a noninvasive tool. Turk J Med Sci 2019; 49:1145-1150. [PMID: 31385666 PMCID: PMC7018308 DOI: 10.3906/sag-1812-165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background/aim Hepatitis B virus (HBV) infection is the leading cause of liver fibrosis (LF). The prognosis and management of patients with chronic hepatitis B virus depend on the amount and progression of liver fibrosis. Angiopoietin-like protein 2 (Angptl2) is not only a chronic inflammatory mediator, but also a tissue-remodeling factor. The aim of this study is to explore the predictive value of Angptl2 in different fibrosis stages in patients chronically infected with HBV. Materials and methods Eighty patients with chronic HBV infection undergoing Fibroscan were included. Serum concentrations of Angptl2 were detected using a commercial ELISA kit. Results Angptl2 levels were significantly associated with liver fibrosis stages (P = 0.02). The area under the curve (AUC) of Angptl2 for distinguishing patients who showed significant fibrosis (F2–F4) was70.2%. Angptl2 with fibrosis-4 (FIB-4) and Angptl2 with AST/platelets ratio (APRI) performed best with an AUC of 92.5%. Conclusion In patients with chronic HBV infection, Angptl2 level represents a potential biomarker independently associated with fibrosis stages. The combination of Angptl2 with FIB-4 or Angptl2 with APRI performed better than the existing models for diagnosing significant fibrosis.
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Affiliation(s)
| | | | - Basem Eysa Elsayed
- National Hepatology and Tropical Medicine Research Institute, Cairo, Egypt
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Satou G, Maji D, Isamoto T, Oike Y, Endo M. UV-B-activated B16 melanoma cells or HaCaT keratinocytes accelerate signaling pathways associated with melanogenesis via ANGPTL 2 induction, an activity antagonized by Chrysanthemum extract. Exp Dermatol 2019; 28:152-160. [PMID: 30554436 PMCID: PMC6850386 DOI: 10.1111/exd.13862] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 12/04/2018] [Accepted: 12/07/2018] [Indexed: 01/30/2023]
Abstract
Sunburn causes inflammation, which increases melanin production in skin and causes hyperpigmentation. Angiopoietin-like protein (ANGPTL) 2 is an inflammatory mediator induced in sun-exposed skin areas. However, whether ANGPTL2 functions in melanin production remains unclear. To assess this possibility, we overexpressed Angptl2 in the melanoma line B16 and in the keratinocyte line HaCaT. Relative to controls, Angptl2-expressing B16 cells produced higher melanin levels via tyrosinase induction. Accordingly, Angptl2-expressing HaCaT cells secreted relatively high levels of both endothelin-1 (ET-1) and α-melanocyte-stimulating hormone (α-MSH). Moreover, treatment with an extract from Chrysanthemum indicum × Erigeron annuus (CE) suppressed ANGPTL2 expression and repressed tyrosinase induction in melanocytes and of α-MSH and ET-1 in keratinocytes. Our data suggest that ANGPTL2 expression in keratinocytes and melanin-producing cells accelerates pigment production and that treatment of skin with a CE extract could prevent melanin accumulation.
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Affiliation(s)
- Gaku Satou
- Saishunkan Pharmaceutical Co. Ltd, Kumamoto, Japan
| | - Daisuke Maji
- Saishunkan Pharmaceutical Co. Ltd, Kumamoto, Japan
| | | | - Yuichi Oike
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Motoyoshi Endo
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
- Department of Molecular Biology, University of Occupational and Environmental Health, Japan, Fukuoka, Japan
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Yoshinaga T, Nishimata H, Tanaka S, Hori E, Tomiyoshi A, Tokudome E, Takei T, Yoshida M. Use of ANGPTL2 mRNA levels in formalin-fixed paraffin-embedded tissues as a biomarker to diagnose gastric cancer and to evaluate the extent of vascular invasion. Oncol Lett 2019; 17:518-524. [PMID: 30655796 DOI: 10.3892/ol.2018.9610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 03/24/2017] [Indexed: 11/06/2022] Open
Abstract
With the recent advances in medical technologies, gastric cancer can often be removed with minimally invasive surgical techniques when identified early. Surgery must remove all gastric cancer, since residual cancerous tissue may lead to recurrence. Resected cancerous tissues are pathologically evaluated to determine whether all cancerous areas have been removed, but such assessments are rarely straightforward, and cancer markers could inform such pathological evaluations of cancer. An ideal marker would be identifiable in formalin-fixed paraffin-embedded (FFPE) tumor tissue. The first objective of the present study was to compare levels of angiopoietin-like protein 2 (ANGPTL2) in cancerous and noncancerous areas of FFPE tissues to determine whether ANGPTL2 is a marker relevant to the pathological diagnosis of cancer. The second objective was to evaluate whether ANGPTL2 mRNA is useful as a marker of the extent of vascular invasion of gastric cancer. Out of the 15 patients studied, 12 had a higher ANGPTL2 mRNA levels in cancerous areas compared with noncancerous areas. This finding indicated that ANGPTL2 mRNA is useful as a biomarker for identifying cancerous areas in FFPE tissues, at least for male patients. Spearman's rank correlation analysis showed a significant correlation between the ANGPTL2 mRNA level and the degree of vascular invasion of cancer (r=0.66; P=0.01). In receiver operating characteristic curve analysis of the association between the ANGPTL2 mRNA level and the degree of vascular invasion, the area under the curve was 0.92 (95% confidence interval, 0.78-1.00; P=0.01), indicating a significant association. The present study demonstrates that ANGPTL2 mRNA in FFPE tissues is a potential biomarker that informs the pathological diagnosis of gastric cancer and that ANGPTL2 mRNA may be predictive of vascular invasion, which is an indicator of metastasis in gastric cancer.
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Affiliation(s)
- Takuma Yoshinaga
- Division of Clinical Application, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Hiroto Nishimata
- Department of Gastroenterology, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Sadao Tanaka
- Department of Diagnostic Pathology, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Emiko Hori
- Division of Clinical Application, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Ayako Tomiyoshi
- Division of Clinical Application, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Erena Tokudome
- Division of Clinical Application, Nanpuh Hospital, Kagoshima, Kagoshima 891-8512, Japan
| | - Takayuki Takei
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Kagoshima 890-0065, Japan
| | - Masahiro Yoshida
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima, Kagoshima 890-0065, Japan
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Pinzone MR, Ceccarelli M, Venanzi Rullo E, Maresca M, Bruno R, Condorelli F, Di Rosa M, Madeddu G, Focà E, Calcagno A, Celesia BM, Cacopardo B, Nunnari G, Pellicanò GF. Circulating angiopoietin-like protein 2 levels are associated with decreased renal function in HIV + subjects on cART: A potential marker of kidney disease. Biomed Rep 2019; 10:140-144. [PMID: 30675354 DOI: 10.3892/br.2019.1183] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/07/2019] [Indexed: 12/17/2022] Open
Abstract
Chronic kidney disease (CKD) is an important cause of morbidity and mortality in HIV-infected individuals, even in the antiretroviral therapy (ART) era. Inflammatory cytokines and adipokines have been suggested to play a role in the development of CKD. The aim of the present study was to examine the circulating levels of a novel proinflammatory cytokine, angiopoietin-like protein 2 (ANGPTL2), in a cohort of 72 HIV-positive subjects on ART. HIV-positive patients were on cART for at least one year. Urine and blood samples were collected. Various factors were analyzed including body mass index (BMI), smoking, and presence/treatment for comorbidities such as diabetes. The estimated glomerular filtration rate was calculated by using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Plasma samples obtained were stored and used to measure sCD14 and ANGPTL2 levels. Data were presented as mean (± standard deviation) or median (interquartile range) for continuous variables. Categorical variables were expressed as number (%). Variables were compared using Student's t-test, Mann-Whitney test, or χ2 test. The results showed an independent negative association between plasma ANGPTL2 and CKD-EPI values. Further prospective studies on larger cohorts are needed to evaluate the pathogenetic role of ANGPTL2 as well as its use as a diagnostic marker of renal dysfunction.
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Affiliation(s)
- Marilia Rita Pinzone
- Department of Clinical and Experimental Medicine, Division of Infectious Diseases, University of Catania, I-95123 Catania, Italy.,Department of Pathology and Laboratory Medicine, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Manuela Ceccarelli
- Department of Clinical and Experimental Medicine, Unit of Infectious Diseases, University of Messina, I-98124 Messina, Italy
| | - Emmanuele Venanzi Rullo
- Department of Pathology and Laboratory Medicine, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.,Department of Clinical and Experimental Medicine, Unit of Infectious Diseases, University of Messina, I-98124 Messina, Italy
| | - Mauro Maresca
- Department of Clinical and Experimental Medicine, Division of Infectious Diseases, University of Catania, I-95123 Catania, Italy
| | - Roberto Bruno
- Department of Clinical and Experimental Medicine, Division of Infectious Diseases, University of Catania, I-95123 Catania, Italy
| | - Fabrizio Condorelli
- Department of Pharmacological Sciences, University of Eastern Piedmont 'A. Avogadro', I-13100 Novara, Italy
| | - Michele Di Rosa
- Department of Biomedical and Biotechnological Sciences, Human Anatomy and Histology Section, University of Catania, I-95123 Catania, Italy
| | - Giordano Madeddu
- Department of Medical, Surgical and Experimental Sciences, Division of Infectious Diseases, University of Sassari, I-07100 Sassari, Italy
| | - Emanuele Focà
- Department of Clinical and Experimental Sciences, Division of Infectious Diseases, University of Brescia, I-25121 Brescia, Italy
| | - Andrea Calcagno
- Department of Medical Sciences, Unit of Infectious Diseases, University of Torino, I-10124 Torino, Italy
| | - Benedetto Maurizio Celesia
- Department of Clinical and Experimental Medicine, Division of Infectious Diseases, University of Catania, I-95123 Catania, Italy
| | - Bruno Cacopardo
- Department of Clinical and Experimental Medicine, Division of Infectious Diseases, University of Catania, I-95123 Catania, Italy
| | - Giuseppe Nunnari
- Department of Clinical and Experimental Medicine, Unit of Infectious Diseases, University of Messina, I-98124 Messina, Italy
| | - Giovanni F Pellicanò
- Department of Human Pathology in Adult and Developmental Age 'G. Barresi', University of Messina, I-98124 Messina, Italy
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Rahmani E, Akbarzadeh S, Broomand A, Torabi F, Motamed N, Zohrabi M. Serum Levels of Angiopoietin-Like Protein 2 and Obestatin in Iranian Women with Polycystic Ovary Syndrome and Normal Body Mass Index. J Clin Med 2018; 7:jcm7070159. [PMID: 29932432 PMCID: PMC6069096 DOI: 10.3390/jcm7070159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/16/2018] [Accepted: 06/17/2018] [Indexed: 11/16/2022] Open
Abstract
Background: Polycystic ovary syndrome (PCOS) is a common endocrine disease in women of reproduction age and a major cause of anovulatory infertility. Insulin resistance plays an important role in the development and durability of this disorder. ANGPTL2 is known as an inflammatory mediator derived from adipose tissue that links obesity to systemic insulin resistance, and obestatin has been identified as a hormone associated with insulin resistance that suppresses food reabsorption, inhibits gastric emptying and decreases weight gain. The aim of this study was to evaluate serum levels of ANGPTL2 and obestatin in PCOS women with normal body mass index (BMI). Methods: In this case-control study, 26 PCOS women based on the Rotterdam 2003 diagnostic criteria as the case group and 26 women with normal menstrual cycles as the control group were enrolled. Serum levels of ANGPTL2, obestatin, insulin and other hormone factors related with PCOS were measured by ELISA method and biochemical parameters were measured by an autoanalyzer. Data were analyzed by independent samples-T test, Chi Square, Correlation and a single sample Kolmogrov–Smirnov test using SPSS software, version 16. Results: There were no significant variations in the amount of ANGPTL2, obestatin, cholesterol, low-density lipoprotein-cholesterol, high-density lipoprotein, cholesterol, creatinine and dehydroepiandrosterone-sulfate between the two groups. There were significant increases in serum levels of fasting blood sugar (p = 0.01), insulin (p = 0.04), homeostasis model assessments of insulin resistance (p = 0.04), testosterone (p = 0.02), luteinizing hormone (p = 0.004), luteinizing hormone/follicle stimulating hormone (p = 0.006) and prolactin (p = 0.04) in case group compared to the control group. A significant positive correlation was observed between ANGPTL2 and insulin (p = 0.02), HOMA-IR (p = 0.01) and, on the other hand, a significant negative correlation was observed between obestatin and insulin (p = 0.01), HOMA-IR (p = 0.008) in PCOS group. Conclusions: In this study, no significant variations were observed in serum levels of ANGPTL2 and obestatin in PCOS women with normal BMI.
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Affiliation(s)
- Elham Rahmani
- Department of Obstetrics and Gynecology, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran.
| | - Samad Akbarzadeh
- Department of Biochemistry, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran.
| | - Ainaz Broomand
- Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran.
| | - Fatemeh Torabi
- Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran.
| | - Niloofar Motamed
- Department of Community Medicine, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran.
| | - Marzieh Zohrabi
- The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr 7514947932, Iran.
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Erkan G, Muratoglu S, Ercin U, Bilgihan A. Angiopoietin-like protein 2 and angiopoietin-like protein 6 levels in patients with nonalcoholic fatty liver disease. Arch Med Sci 2018; 14:781-787. [PMID: 30002695 PMCID: PMC6040129 DOI: 10.5114/aoms.2016.61811] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/19/2016] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION The aim of the current study was to examine the difference between patients detected with nonalcoholic fatty liver disease (NAFLD) and healthy subjects in terms of serum angiopoietin-like protein (ANGPTL) 2 and ANGPTL6 levels and to evaluate the correlation between ANGPTL2 and ANGPTL6 levels and liver enzyme levels, fasting glucose, lipid levels, and steatosis degree on ultrasonography (USG). MATERIAL AND METHODS A total of 159 participants were included in the study. The participants were divided into 3 groups depending on the steatosis degree on USG and serum alanine aminotransferase (ALT) levels: the NAFLD group with increased ALT, the NAFLD group with normal ALT, and the healthy control group. The groups were compared in terms of biochemical and ultrasonographic findings, insulin resistance, metabolic syndrome (MetS), and anthropometric parameters. RESULTS There was no significant difference between NAFLD patients and healthy subjects with respect to serum ANGPTL2 and ANGPTL6 levels (p > 0.05). ANGPTL2 levels did not correlate with serum, biochemical, or ultrasonographic findings, or anthropometric parameters (p > 0.05). A positive correlation was found between serum ANGPTL6 levels and fasting blood glucose, ALT, alkaline phosphatase, γ-glutamyl transpeptidase, fasting insulin, and HOMA-IR levels. CONCLUSIONS While our findings suggest no relationship between serum ANGPTL2 and ANGPTL6 levels and NAFLD, ANGPTL6 levels may be related to metabolic and biochemical parameters. The effects of ANGPTL2 and ANGPTL6 in the pathogenesis of NAFLD should be investigated further.
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Affiliation(s)
- Gulbanu Erkan
- Department of Internal Medicine, Division of Gastroenterology, Istanbul Medipol University, Istanbul, Turkey
| | - Suzan Muratoglu
- Department of Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ugur Ercin
- Balıkesir Public Health Directorate of Medical Laboratory, BalIkesir, Turkey
| | - Ayse Bilgihan
- Department of Biochemistry, Faculty of Medicine, Gazi University, Ankara, Turkey
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Motokawa I, Endo M, Terada K, Horiguchi H, Miyata K, Kadomatsu T, Morinaga J, Sugizaki T, Ito T, Araki K, Morioka MS, Manabe I, Samukawa T, Watanabe M, Inoue H, Oike Y. Interstitial pneumonia induced by bleomycin treatment is exacerbated in Angptl2-deficient mice. Am J Physiol Lung Cell Mol Physiol 2016; 311:L704-L713. [PMID: 27542805 DOI: 10.1152/ajplung.00005.2016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 08/12/2016] [Indexed: 11/22/2022] Open
Abstract
Angiopoietin-like protein 2 (ANGPTL2) is a chronic inflammatory mediator that, when deregulated, is associated with various pathologies. However, little is known about its activity in lung. To assess a possible lung function, we generated a rabbit monoclonal antibody that specifically recognizes mouse ANGPTL2 and then evaluated protein expression in mouse lung tissue. We observed abundant ANGPTL2 expression in both alveolar epithelial type I and type II cells and in resident alveolar macrophages under normal conditions. To assess ANGPTL2 function, we compared lung phenotypes in Angptl2 knockout (KO) and wild-type mice but observed no overt changes. We then generated a bleomycin-induced interstitial pneumonia model using wild-type and Angptl2 KO mice. Bleomycin-treated wild-type mice showed specifically upregulated ANGPTL2 expression in areas of severe fibrosing interstitial pneumonia, while Angptl2 KO mice developed more severe lung fibrosis than did comparably treated wild-type mice. Lung fibrosis seen following bone marrow transplant was comparable in wild-type or Angptl2 KO mice treated with bleomycin, suggesting that Angptl2 loss in myeloid cells does not underlie fibrotic phenotypes. We conclude that Angptl2 deficiency in lung epithelial cells and resident alveolar macrophages causes severe lung fibrosis seen following bleomycin treatment, suggesting that ANGPTL2 derived from these cell types plays a protective role against fibrosis in lung.
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Affiliation(s)
- Ikuyo Motokawa
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan; Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Motoyoshi Endo
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan;
| | - Kazutoyo Terada
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Haruki Horiguchi
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Keishi Miyata
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tsuyoshi Kadomatsu
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Jun Morinaga
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Taichi Sugizaki
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takaaki Ito
- Department of Pathology and Experimental Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kimi Araki
- Division of Developmental Genetics, Institute of Resource Developmental and Analysis, Kumamoto University, Kumamoto, Japan
| | - Masaki Suimye Morioka
- Department of Bioinformatics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Manabe
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; and
| | - Takuya Samukawa
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masaki Watanabe
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiromasa Inoue
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yuichi Oike
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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12
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Hirasawa M, Takubo K, Osada H, Miyake S, Toda E, Endo M, Umezawa K, Tsubota K, Oike Y, Ozawa Y. Angiopoietin-like Protein 2 Is a Multistep Regulator of Inflammatory Neovascularization in a Murine Model of Age-related Macular Degeneration. J Biol Chem 2016; 291:7373-85. [PMID: 26839315 PMCID: PMC4817169 DOI: 10.1074/jbc.m115.710186] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Indexed: 01/19/2023] Open
Abstract
Choroidal neovascularization (CNV) is a pathogenic process of age-related macular degeneration, a vision-threatening disease. The retinal pigment epithelium and macrophages both influence CNV development. However, the underlying mechanisms remain obscure. Here, we focus on Angptl2 (angiopoietin-like protein 2), a cytokine involved in age-related systemic diseases. Angptl2 was originally identified as an adipocytokine and is also expressed in the eye. Using a laser-induced CNV model, we found thatAngptl2KO mice exhibited suppressed CNV development with reduced macrophage recruitment and inflammatory mediator induction. The mediators monocyte chemotactic protein-1, interleukin-1β (Il-1β),Il-6, matrix metalloprotease-9 (Mmp-9), and transforming growth factor-β1 (Tgf-β1) that were up-regulated during CNV development were all suppressed in the retinal pigment epithelium-choroid of CNV models generated in theAngptl2KO mice. Bone marrow transplantation using wild-type and KO mice suggested that both bone marrow-derived and host-derived Angptl2 were responsible for macrophage recruitment and CNV development. Peritoneal macrophages derived fromAngptl2KO mice expressed lower levels of the inflammatory mediators. In the wild-type peritoneal macrophages and RAW264.7 cells, Angptl2 induced the mediators via integrins α4 and β2, followed by the downstream activation of NF-κB and ERK. The activation of NF-κB and ERK by Angptl2 also promoted macrophage migration. Therefore, Angptl2 from focal tissue might trigger macrophage recruitment, and that from recruited macrophages might promote expression of inflammatory mediators including Angptl2 in an autocrine and/or paracrine fashion to facilitate CNV development. Angptl2 might therefore represent a multistep regulator of CNV pathogenesis and serve as a new therapeutic target for age-related macular degeneration.
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Affiliation(s)
- Manabu Hirasawa
- From the Laboratory of Retinal Cell Biology and the Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan, the Department of Ophthalmology, Tokyo Dental College Suidobashi Hospital, Tokyo 101-0061 Japan
| | - Keiyo Takubo
- the Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | | | | | - Eriko Toda
- From the Laboratory of Retinal Cell Biology and
| | - Motoyoshi Endo
- the Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Kazuo Umezawa
- the Department of Molecular Target Medicine Screening, Aichi Medical University School of Medicine, Aichi, 480-1195, Japan
| | - Kazuo Tsubota
- the Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Yuichi Oike
- the Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860-8555, Japan, the Core Research for Evolutional Science and Technology, Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan, and
| | - Yoko Ozawa
- From the Laboratory of Retinal Cell Biology and the Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan,
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13
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Yoshinaga T, Shigemitsu T, Nishimata H, Kitazono M, Hori E, Tomiyoshi A, Takei T, Yoshida M. Angiopoietin-like protein 2 as a potential biomarker for colorectal cancer. Mol Clin Oncol 2015; 3:1080-1084. [PMID: 26623054 DOI: 10.3892/mco.2015.577] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/15/2015] [Indexed: 11/06/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common malignancy worldwide. Disease progression leads to its spread to other organs, such as the liver, and is associated with higher mortality rates. Early CRC detection is therefore crucial for maximizing the chances of complete cure. The measurement of serum-based tumor biomarkers has shown great potential for the detection of CRC. In this study, we investigated the feasibility of using angiopoietin-like protein 2 (ANGPTL2) as a candidate biomarker for CRC. We first investigated ANGPTL2 expression in 7 CRC cell lines, among which Colo320, NCC-CoCK-115P, Caco-2 and Colo205 exhibited comparatively high ANGPTL2 expression. The serum levels of ANGPTL2 in CRC patients (3.45±1.30 ng/ml) were higher compared with those in healthy controls (2.74±0.64 ng/ml) (P<0.05). A receiver operating characteristic analysis demonstrated that the diagnostic performance of ANGPTL2 was marginally lower compared with that of the established biomarker C-reactive protein, but higher compared with that of carbohydrate antigen 19-9. These results suggested that the simultaneous measurement of ANGPTL2, along with previously established serum biomarkers, may increase the likelihood of early detection of CRC.
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Affiliation(s)
- Takuma Yoshinaga
- Division of Clinical Application, Nanpuh Hospital, Kagoshima 891-8512, Japan ; Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Takamasa Shigemitsu
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Hiroto Nishimata
- Department of Gastroenterology, Nanpuh Hospital, Kagoshima 891-8512, Japan
| | - Masaki Kitazono
- Department of Gastrointestinal Surgery, Nanpuh Hospital, Kagoshima 891-8512, Japan
| | - Emiko Hori
- Division of Clinical Application, Nanpuh Hospital, Kagoshima 891-8512, Japan
| | - Ayako Tomiyoshi
- Division of Clinical Application, Nanpuh Hospital, Kagoshima 891-8512, Japan
| | - Takayuki Takei
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
| | - Masahiro Yoshida
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
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14
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Kadomatsu T, Endo M, Miyata K, Oike Y. Diverse roles of ANGPTL2 in physiology and pathophysiology. Trends Endocrinol Metab 2014; 25:245-54. [PMID: 24746520 DOI: 10.1016/j.tem.2014.03.012] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/18/2014] [Accepted: 03/25/2014] [Indexed: 12/12/2022]
Abstract
Stresses based on aging and lifestyle can cause tissue damage. Repair of damage by tissue remodeling is often meditated by communications between parenchymal and stromal cells via cell-cell contact or humoral factors. However, loss of tissue homeostasis leads to chronic inflammation and pathological tissue remodeling. Angiopoietin-like protein 2 (ANGPTL2) maintains tissue homeostasis by promoting adaptive inflammation and subsequent tissue reconstruction, whereas excess ANGPTL2 activation induced by prolonged stress promotes breakdown of tissue homeostasis due to chronic inflammation and irreversible tissue remodeling, promoting development of various metabolic diseases. Thus, it is important to define how ANGPTL2 signaling is regulated in order to understand mechanisms underlying disease development. Here, we focus on ANGPTL2 function in physiology and pathophysiology.
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Affiliation(s)
- Tsuyoshi Kadomatsu
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Motoyoshi Endo
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Keishi Miyata
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan
| | - Yuichi Oike
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan; Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Chiyoda-ku, Tokyo 102-0075, Japan.
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15
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Meng QX, Wen L, Chen XY, Zhong HJ. Association of serum angiopoietin-like protein 2 and epinephrine levels in metabolically healthy but obese individuals: In vitro and in vivo evidence. Exp Ther Med 2013; 5:1631-1636. [PMID: 23837045 PMCID: PMC3702721 DOI: 10.3892/etm.2013.1045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Accepted: 03/06/2013] [Indexed: 02/06/2023] Open
Abstract
In the present study, we explored the association of serum angiopoietin-like protein 2 (ANGPTL2) levels with insulin sensitivity and serum epinephrine levels in metabolically healthy but obese (MHO) subjects. We also investigated the effects of epinephrine on ANGPTL2 expression in adipocytes in vitro. We examined the metabolic characteristics and serum ANGPTL2 and epinephrine levels in 100 non-diabetic obese postmenopausal women. Subjects were classified as MHO (n=25) or at-risk (n=25) based on the upper and lower quartiles of insulin sensitivity, respectively. Differentiated 3T3-L1 adipocytes were treated with increasing doses of epinephrine (10, 30 and 50 nM) in the presence or absence of phentolamine (10 μM), propranolol (0.3 μM), LY294002 (50 μM) or protein kinase A inhibitor fragment 6-22 amide (PKAI, 1 mM) for 24 h. We observed that serum ANGPTL2 levels were negatively correlated with insulin sensitivity (r=-0.23, P=0.021) and serum epinephrine level (r=-0.62, P<0.001) in the study subjects, with the MHO subjects displaying significantly lower serum ANGPTL2 and higher serum epinephrine levels than the at-risk subjects. Epinephrine reduced the ANGPTL2 mRNA and protein levels in differentiated 3T3-L1 adipocytes in a dose-dependent manner. Propranolol and PKAI were able to eliminate this reduction in ANGPTL2 levels whereas phentolamine and LY294002 were not. The in vitro findings indicated that epinephrine decreased ANGPTL expression at the mRNA and protein levels via the β-adrenoceptors and the PKA signaling pathway. This study suggests that β-receptor activation helps to maintain the metabolic profile of MHO individuals and prevent type 2 diabetes mellitus (T2DM) by decreasing serum ANGPTL2 levels.
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Affiliation(s)
- Qing-Xin Meng
- Department of Endocrinology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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Muramoto A, Tsushita K, Kato A, Ozaki N, Tabata M, Endo M, Oike Y, Oiso Y. Angiopoietin-like protein 2 sensitively responds to weight reduction induced by lifestyle intervention on overweight Japanese men. Nutr Diabetes 2011; 1:e20. [PMID: 23154406 PMCID: PMC3302127 DOI: 10.1038/nutd.2011.16] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 09/21/2011] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVE Overexpression of Angiopoietin-like protein 2 (Angptl2) in obese adipose tissues promotes adipose tissue inflammation and its-related metabolic abnormalities. In a comparative study with adiponectin, we investigated whether alterations in serum Angptl2 concentrations reflect the effect of lifestyle intervention on weight loss and improved metabolic parameters in overweight subjects. METHODS A total of 154 Japanese men (age, 40.9±5.1 years; body mass index, 26.9±3.6 kg m(-2); abdominal circumference, 94.1±8.9 cm) underwent a 3-month lifestyle intervention and underwent follow-up for 3 months thereafter. RESULTS Decreased serum Angptl2 levels, but not increased serum adiponectin levels, were immediately apparent at the end of 3-month lifestyle intervention. Angptl2 levels continued to decrease for 3 months in parallel with body weight loss and improvement in metabolic indicators. In subjects showing 6% weight reduction, markedly reduced Angptl2 levels were detected at the end of 3-month intervention, whereas increased adiponectin levels were detected 3 months after the end of intervention. Multivariate analysis revealed changes in serum Angptl2 levels associated with changes in triglycerides (TGs), aspartate aminotransferase and alanine aminotransferase. In contrast, changes in serum adiponectin levels were associated with altered high-density lipoprotein cholesterol (HDL-C) and fasting plasma glucose levels. CONCLUSION A 3-month lifestyle intervention promoted weight reduction and improved glucose and lipid metabolism, an effect maintained 3 months later. Notably, our findings indicate that decreased Angptl2 levels are a good indicator of reduced visceral fat and metabolic improvement at early stages of lifestyle intervention. Thus, Angptl2 reflects adiposity and might be a key protein to regulate inflammation and TG metabolism, whereas adiponectin levels could reflect improved glucose and HDL-C metabolism.
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Affiliation(s)
- A Muramoto
- Division of Health Development of Comprehensive Health Science Center, Aichi Health Promotion Foundation, Aichi-ken, Japan
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Tsushita
- Division of Health Development of Comprehensive Health Science Center, Aichi Health Promotion Foundation, Aichi-ken, Japan
| | - A Kato
- Division of Health Development of Comprehensive Health Science Center, Aichi Health Promotion Foundation, Aichi-ken, Japan
| | - N Ozaki
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Tabata
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - M Endo
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Y Oike
- Department of Molecular Genetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Y Oiso
- Department of Endocrinology and Diabetes, Nagoya University Graduate School of Medicine, Nagoya, Japan
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