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Sakata N, Yoshimatsu G, Chinen K, Kawakami R, Kodama S. Possibility of adiponectin use to improve islet transplantation outcomes. Sci Rep 2022; 12:444. [PMID: 35013505 PMCID: PMC8748684 DOI: 10.1038/s41598-021-04245-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 12/20/2021] [Indexed: 11/09/2022] Open
Abstract
Although islet transplantation (ITx) is a promising therapy for severe diabetes mellitus, further advancements are necessary. Adiponectin, an adipokine that regulates lipid and glucose metabolism, exerts favorable effects on islets, such as reinforcement of the insulin-releasing function. This study evaluated the possibility of adiponectin use to improve ITx outcomes. We treated mouse islets with 10 µg/mL recombinant mouse adiponectin by overnight culture and then assessed the insulin-releasing, angiogenic, and adhesion functions of the islets. Furthermore, 80 syngeneic islet equivalents with or without adiponectin treatment were transplanted into the renal subcapsular space of diabetic mice. In in vitro assessment, released insulin at high glucose stimulation, insulin content, and expressions of vascular endothelial growth factor and integrin β1 were improved in adiponectin-treated islets. Furthermore, adiponectin treatment improved the therapeutic effect of ITx on blood glucose levels and promoted angiogenesis of the transplanted islets. However, the therapeutic effect was not pronounced in glucose tolerance test results. In conclusion, adiponectin treatment had preferable effects in the insulin-releasing, angiogenic, and adhesion functions of islets and contributed to the improvement of ITx. The future use of adiponectin treatment in clinical settings to improve ITx outcomes should be investigated.
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Affiliation(s)
- Naoaki Sakata
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan.
- Center for Regenerative Medicine, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan.
| | - Gumpei Yoshimatsu
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
| | - Kiyoshi Chinen
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
| | - Ryo Kawakami
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
| | - Shohta Kodama
- Department of Regenerative Medicine and Transplantation, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
- Center for Regenerative Medicine, Fukuoka University Hospital, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
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Yu H, Huang Y, Chen L, Shi L, Yang Y, Xia W. Assessment of Computed Tomography-Defined Muscle and Adipose Tissue Features in Relation to Length of Hospital Stay and Recurrence of Hypertriglyceridemic Pancreatitis. Int J Gen Med 2021; 14:1709-1717. [PMID: 33981158 PMCID: PMC8107056 DOI: 10.2147/ijgm.s311118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/16/2021] [Indexed: 12/12/2022] Open
Abstract
Background Analytic morphometric assessment has recently been proposed to be applied to the study of acute pancreatitis (AP). However, the relationship between body composition and the outcomes of hypertriglyceridemic pancreatitis (HTGP) is still unclear. The aim of this study was to evaluate body composition in relation to the length of hospital stay (LOS) and recurrence of HTGP. Methods Patient characteristics, admission examination data, body composition parameters, LOS, and recurrence within 1 year were collected from the institutional pancreatitis database and follow-up records. Logistic regression analysis was used to identify risk factors for LOS and recurrence of HTGP. Results Of the 196 included patients, 158 (80.6%) were men and 53 (27.0%) were sarcopenic. The average LOS was 15.83±10.02 days. The recurrence rate of HTGP was 36.7%. Multivariate analysis with multiple linear regression suggested that subcutaneous adipose tissue (SAT) area (p=0.019) and high-density lipoprotein-cholesterol (HDL-C) (p=0.001) were independently associated with the LOS for HTGP after adjusting for age and sex. The multivariate adjusted hazard ratios for SAT area and HDL-C, with respect to the relationship between body parameters and LOS, were 1.008 (95% confidence interval [CI], 1.001–1.015) and 0.090 (95% CI, 0.022–0.361), respectively. No significant differences were observed between the AP and recurrent AP (RAP) groups in terms of characteristics, admission examination data, and body composition parameters. Conclusion SAT area and HDL-C are associated with LOS in patients with HTGP. The body composition of patients at the first symptom onset of HTGP cannot predict recurrence.
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Affiliation(s)
- Huajun Yu
- Department of Pancreatitis Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Yingbao Huang
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Lifang Chen
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Liuzhi Shi
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Yunjun Yang
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Weizhi Xia
- Department of Radiology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China
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3
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Feyzi M, Tabandeh MR, Shariati M, Edalatmanesh MA. Age Associated Changes in Transcription of Adiponectin, AdipoR1 and AdipoR2 Genes in Pancreas of Rats. CELL JOURNAL 2020; 22:61-67. [PMID: 32779434 PMCID: PMC7481892 DOI: 10.22074/cellj.2020.6921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/02/2019] [Indexed: 12/04/2022]
Abstract
Objective Adiponectin has a crucial role in the function, proliferation and viability of β-cell via action of two receptors:
AdipoR1 and AdipoR2. Nevertheless, age related change of Adiponectin system genes in pancreas is unclear or
controversial. This study sought to investigate the effects of aging process on serum Adiponectin levels, Adiponectin
and its receptor expression in the rat pancreas.
Materials and Methods In this experimental study, insulin resistance markers including serum insulin and glucose
concentrations, homeostatic model assessment of insulin resistance (HOMA-IR), oral glucose tolerance test (OGTT),
glucose induced insulin secretion (GIIS), serum Adiponectin levels, pancreatic expression of Adiponectin and its
receptors were studied in male Sprague-Dawley rats at the age of 2, 5, 10, 18, 52 and 72 weeks of age.
Results We found that aging triggered signs of insulin resistance characteristics in rats at 72 age weeks including
marked insulin reduction, hyperglycemia and increased HOMA-IR. Circulating Adiponectin as well as pancreatic
expression of Adiponectin and AdipoR1 was gradually decreased with age, while the opposite expression pattern of
AdipoR2 was observed in the old rats.
Conclusion Because Adiponectin and Adiponectin signaling have crucial role in β-cell function and viability, we
concluded that reduction of Adiponectin signaling may be involved in aging induced β-cell dysfunction. As a result,
manipulation of Adiponectin signaling may be a beneficial approach for improvement of β-cell function in the old people.
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Affiliation(s)
- Marziyeh Feyzi
- Department of Biology, Fars Science and Research Branch, Islamic Azad University, Fars, Iran.,Department of Biology, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Mohammad Reza Tabandeh
- Department of Basic Sciences, Division of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Electronic Address: .,Stem Cells and Transgenic Technology Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mehrdad Shariati
- Department of Biology, Kazerun Branch, Islamic Azad University, Kazerun, Iran
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4
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Frabutt D, Stull N, Pineros AR, Tersey SA, Scheuner D, Mastracci TL, Pugia MJ. Adiponectin receptor fragmentation in mouse models of type 1 and type 2 diabetes. ARCHIVES OF AUTOIMMUNE DISEASES 2020; 1:3-13. [PMID: 34414399 PMCID: PMC8372748 DOI: 10.46439/autoimmune.1.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The protein hormone adiponectin regulates glucose and fatty acid metabolism by binding to two PAQR-family receptors (AdipoR1 and AdipoR2). Both receptors feature a C-terminal segment which is released by proteolysis to form a freely circulating C-terminal fragment (CTF) found in the plasma of normal individuals but not in some undefined diabetes patients. The AdipoR1-CTF344–376 is a competitive inhibitor of tumor necrosis factor α cleavage enzyme (TACE) but it contains a shorter peptide domain (AdipoR1 CTF351–362) that is a strong non-competitive inhibitor of insulin-degrading enzyme (IDE). The link between adiponectin receptor fragmentation and diabetes pathology is unclear but could lead to new therapeutic strategies. We therefore investigated physiological variations in the concentrations of CTF in non-obese diabetic (NOD/ShiLtJ) mice and C57BL/6 mice with diet-induced obesity (DIO) as models of diabetes types 1 and 2, respectively. We tested for changes in adiponectin receptor signaling, immune responses, disease progression, and the abundance of neutralizing autoantibodies. Finally, we administered exogenous AdipoR1-CTF peptides either containing or lacking the IDE-binding domain. We observed the more pronounced CTF shedding in the TACE-active NOD mice, which represents an inflammatory autoimmune phenotype, but fragmentation was also observed to a lesser extent in the DIO model. Autoantibodies to CTF were detected in both models. Neither exogenous CTF peptide affected IgG-CTF plasma levels, body weight or the conversion of NOD mice to diabetes. The pattern of AdipoR1 fragmentation and autoantibody production under physiological conditions of aging, DIO, and autoimmune diabetes therefore provides insight into the association adiponectin biology and diabetes.
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Affiliation(s)
- Dylan Frabutt
- Indiana Biosciences Research Institute, Indianapolis IN, United States
| | - Natalie Stull
- Indiana Biosciences Research Institute, Indianapolis IN, United States
| | - Annie R Pineros
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis IN, United States
| | - Sarah A Tersey
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis IN, United States
| | - Donalyn Scheuner
- Indiana Biosciences Research Institute, Indianapolis IN, United States
| | - Teresa L Mastracci
- Indiana Biosciences Research Institute, Indianapolis IN, United States.,Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis IN, United States
| | - Michael J Pugia
- Indiana Biosciences Research Institute, Indianapolis IN, United States
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5
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Muñoz‐Muñoz E, Krause BJ, Uauy R, Casanello P. LGA‐newborn from patients with pregestational obesity present reduced adiponectin‐mediated vascular relaxation and endothelial dysfunction in fetoplacental arteries. J Cell Physiol 2018; 233:6723-6733. [DOI: 10.1002/jcp.26499] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 01/24/2018] [Indexed: 12/21/2022]
Affiliation(s)
| | - Bernardo J. Krause
- Division of Pediatrics, School of Medicine Pontificia Universidad Católica de Chile Santiago Chile
| | - Ricardo Uauy
- Division of Pediatrics, School of Medicine Pontificia Universidad Católica de Chile Santiago Chile
| | - Paola Casanello
- Division of Pediatrics, School of Medicine Pontificia Universidad Católica de Chile Santiago Chile
- Division of Obstetrics and Gynecology, School of Medicine Pontificia Universidad Católica de Chile Santiago Chile
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Guo R, Han M, Song J, Liu J, Sun Y. Adiponectin and its receptors are involved in hypertensive vascular injury. Mol Med Rep 2017; 17:209-215. [PMID: 29115432 PMCID: PMC5780128 DOI: 10.3892/mmr.2017.7878] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 09/07/2017] [Indexed: 01/08/2023] Open
Abstract
Adipocyte-derived adiponectin (APN) is involved in the protection against cardiovascular disease, but the endogenous APN and its receptor expression in the perivascular adipocytes and their role in hypertensive vascular injury remain unclear. The present study aimed to detect endogenous APN and its receptor expression and their protective effects against hypertensive vascular injury. APN was mainly expressed in the perivascular adipocytes, while its receptors AdipoR1 and AdipoR2 were ubiquitously expressed in the blood vessels. Angiotensin II (Ang II)-induced hypertension resulted in a significant decrease of APN and AdipoR1 and AdipoR2 in the perivascular adipocytes and vascular cells. The migration assay used demonstrated that APN attenuated Ang II-induced vascular smooth muscle cells migration and p38 phosphorylation Furthermore, the in vivo study demonstrated that APN receptor agonist AdipoRon attenuated Ang II-induced hypertensive vascular hypertrophy and fibrosis. Taken together, the present study indicated that perivascular adipocytes-derived APN attenuated hypertensive vascular injury possibly via its receptor-mediated inhibition of p38 signaling pathway.
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Affiliation(s)
- Ruimin Guo
- Emergency Medicine, Putuo Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200333, P.R. China
| | - Min Han
- Emergency Medicine, Putuo Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200333, P.R. China
| | - Juan Song
- Emergency Medicine, Putuo Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200333, P.R. China
| | - Jun Liu
- Emergency Medicine, Putuo Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200333, P.R. China
| | - Yanni Sun
- Emergency Medicine, Putuo Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200333, P.R. China
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Fujisawa T, Kagawa K, Hisatomi K, Kubota K, Sato H, Nakajima A, Matsuhashi N. Obesity with abundant subcutaneous adipose tissue increases the risk of post-ERCP pancreatitis. J Gastroenterol 2016; 51:931-8. [PMID: 26792788 DOI: 10.1007/s00535-016-1160-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/24/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND/PURPOSE The risk factors for post-endoscopic retrograde cholangiopancreatography pancreatitis (PEP) have been widely investigated. However, studies focusing on the body mass index (BMI) and distribution of adipose tissue have not been reported. Therefore, we examined the correlation between PEP and these factors. METHODS A total of 583 consecutive endoscopic retrograde cholangiopancreatography (ERCP)-naïve patients undergoing therapeutic ERCP were retrospectively analyzed. Subjects were categorized into four groups by BMI: underweight, normal, overweight, and obesity; the PEP rates were compared. In addition, the relationship between PEP and parameters of obesity, visceral and subcutaneous adipose tissue as well as abdominal circumference was investigated. RESULTS PEP rate was significantly higher in obesity (30 %) and lower in normal (3 %, P < 0.001). The PEP rate in underweight (7.3 %) was conversely higher than in normal. As for parameters of obesity, only subcutaneous adipose tissue was correlated with PEP incidence (P = 0.009). The correlation of PEP incidence with BMI and subcutaneous adipose tissue was separately reconfirmed by multivariate analysis including female gender and guidewire placement; these factors showed a tendency toward differences in univariate analysis. CONCLUSIONS Obesity could be a risk factor for PEP. In the obesity group, an excess of subcutaneous adipose tissue might be an especially important factor related to PEP incidence.
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Affiliation(s)
- Toshio Fujisawa
- Department of Gastroenterology, NTT Medical Centre Tokyo, Tokyo, Japan.
| | - Koichi Kagawa
- Department of Gastroenterology, NTT Medical Centre Tokyo, Tokyo, Japan
| | - Kantaro Hisatomi
- Department of Gastroenterology, NTT Medical Centre Tokyo, Tokyo, Japan
| | - Kensuke Kubota
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - Hajime Sato
- Department of Health Policy and Technology Assessment, National Institute of Public Health, Saitama, Japan
| | - Atsushi Nakajima
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
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Abstract
OBJECTIVES To explore the effect of betaine on alcoholic pancreatic steatosis and its mechanism. METHODS Rats were randomly assigned to control, ethanol, or ethanol + betaine groups. Changes in pancreatic morphology; serum lipid levels; and pancreatic lipid, amylase and lipase levels were determined. The serum and adipose tissue adiponectin level was measured by an enzyme-linked immunoassay. Adiponectin receptor-1 (AdipoR1), AdipoR2, sterol regulatory element binding protein-1c (SREBP-1c), SREBP-2, and fatty acid synthetase expression levels were quantified. The SREBP-1c expression in SW1990 cells treated with various concentrations of ethanol or ethanol plus betaine and/or adiponectin was assessed. RESULTS Alcohol-induced changes in pancreatic morphology were attenuated by betaine. Pancreatic triglyceride, free fatty acid and expression levels of SREBP-1c and fatty acid synthetase were elevated after ethanol feeding but remained at control levels after betaine supplementation. Alcohol-induced decreases in serum and adipose tissue adiponectin, pancreatic AdipoR1, amylase, and lipase were attenuated by betaine. Serum triglyceride and free fatty acid levels were elevated after alcohol consumption and remained higher after betaine supplementation compared with controls. Betaine and/or adiponectin suppressed alcohol-induced SREBP-1c upregulation in vitro. CONCLUSIONS Betaine attenuated alcoholic-induced pancreatic steatosis most likely by suppressing pancreatic SREBP-1c both directly and through the restoration of adiponectin signaling.
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Liu BH, Lin YY, Wang YC, Huang CW, Chen CC, Wu SC, Mersmann HJ, Cheng WTK, Ding ST. Porcine adiponectin receptor 1 transgene resists high-fat/sucrose diet-induced weight gain, hepatosteatosis and insulin resistance in mice. Exp Anim 2014; 62:347-60. [PMID: 24172199 PMCID: PMC4160961 DOI: 10.1538/expanim.62.347] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Adiponectin and its receptors have been demonstrated to play important roles in regulating glucose and lipid metabolism in mice. Obesity, type II diabetes and cardiovascular disease are highly correlated with down-regulated adiponectin signaling. In this study, we generated mice overexpressing the porcine Adipor1 transgene (pAdipor1) to study its beneficial effects in metabolic syndromes as expressed in diet-induced obesity, hepatosteatosis and insulin resistance. Wild-type (WT) and pAdipor1 transgenic mice were fed ad libitum with a standard chow diet (Chow) or a high-fat/sucrose diet (HFSD) for 24 weeks, beginning at 6 to 7 weeks of age. There were 12 mice per genetic/diet/sex group. When challenged with HFSD to induce obesity, the pAdipor1 transgenic mice resisted development of weight gain, hepatosteatosis and insulin resistance. These mice had lowered plasma adiponectin, triglyceride and glycerol concentrations compared to WT mice. Moreover, we found that (indicated by mRNA levels) fatty acid oxidation was enhanced in skeletal muscle and adipose tissue, and liver lipogenesis was inhibited. The pAdipor1 transgene also restored HFSD-reduced phosphoenolpyruvate carboxykinase 1 (Pck1) and glucose transporter 4 mRNA in the adipose tissues, implying that the increased Pck1 may promote glyceroneogenesis to reduce glucose intolerance and thus activate the flux of glyceride-glycerol to resist diet-induced weight gain in the adipose tissues. Taken together, we demonstrated that pAdipor1 can prevent diet-induced weight gain and insulin resistance. Our findings may provide potential therapeutic strategies for treating metabolic syndromes and obesity, such as treatment with an ADIPOR1 agonist or activation of Adipor1 downstream targets.
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Affiliation(s)
- Bing-Hsien Liu
- Department of Animal Science and Technology, National Taiwan University, No. 50, Ln. 155, Sec. 3, Keelung Rd., Da'an Dist., Taipei City 106, Taiwan
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Li L, Zhang ZG, Lei H, Wang C, Wu LP, Wang JY, Fu FY, Zhu WG, Wu LL. Angiotensin II reduces cardiac AdipoR1 expression through AT1 receptor/ROS/ERK1/2/c-Myc pathway. PLoS One 2013; 8:e49915. [PMID: 23349663 PMCID: PMC3551944 DOI: 10.1371/journal.pone.0049915] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 10/15/2012] [Indexed: 12/22/2022] Open
Abstract
Adiponectin, an abundant adipose tissue-derived protein, exerts protective effect against cardiovascular disease. Adiponectin receptors (AdipoR1 and AdipoR2) mediate the beneficial effects of adiponectin on the cardiovascular system. However, the alteration of AdipoRs in cardiac remodeling is not fully elucidated. Here, we investigated the effect of angiotensin II (AngII) on cardiac AdipoRs expression and explored the possible molecular mechanism. AngII infusion into rats induced cardiac hypertrophy, reduced AdipoR1 but not AdipoR2 expression, and attenuated the phosphorylations of adenosine monophosphate-activated protein kinase and acetyl coenzyme A carboxylase, and those effects were all reversed by losartan, an AngII type 1 (AT1) receptor blocker. AngII reduced expression of AdipoR1 mRNA and protein in cultured neonatal rat cardiomyocytes, which was abolished by losartan, but not by PD123319, an AT2 receptor antagonist. The antioxidants including reactive oxygen species (ROS) scavenger NAC, NADPH oxidase inhibitor apocynin, Nox2 inhibitor peptide gp91 ds-tat, and mitochondrial electron transport chain complex I inhibitor rotenone attenuated AngII-induced production of ROS and phosphorylation of extracellular signal-regulated kinase (ERK) 1/2. AngII-reduced AdipoR1 expression was reversed by pretreatment with NAC, apocynin, gp91 ds-tat, rotenone, and an ERK1/2 inhibitor PD98059. Chromatin immunoprecipitation assay demonstrated that AngII provoked the recruitment of c-Myc onto the promoter region of AdipoR1, which was attenuated by PD98059. Moreover, AngII-induced DNA binding activity of c-Myc was inhibited by losartan, NAC, apocynin, gp91 ds-tat, rotenone, and PD98059. c-Myc small interfering RNA abolished the inhibitory effect of AngII on AdipoR1 expression. Our results suggest that AngII inhibits cardiac AdipoR1 expression in vivo and in vitro and AT1 receptor/ROS/ERK1/2/c-Myc pathway is required for the downregulation of AdipoR1 induced by AngII.
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MESH Headings
- Acetyl-CoA Carboxylase/metabolism
- Adenylate Kinase/metabolism
- Adiponectin/blood
- Adipose Tissue/drug effects
- Adipose Tissue/metabolism
- Angiotensin II/pharmacology
- Animals
- Animals, Newborn
- Blood Vessels/drug effects
- Blood Vessels/metabolism
- Cardiomegaly/genetics
- Cardiomegaly/metabolism
- Cardiomegaly/pathology
- Enzyme Activation/drug effects
- Gene Expression Regulation/drug effects
- MAP Kinase Signaling System/drug effects
- Male
- Membrane Glycoproteins/antagonists & inhibitors
- Mitogen-Activated Protein Kinase 1/metabolism
- Mitogen-Activated Protein Kinase 3/metabolism
- Muscle, Skeletal/drug effects
- Muscle, Skeletal/metabolism
- Myocytes, Cardiac/cytology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- NADPH Oxidase 2
- NADPH Oxidases/antagonists & inhibitors
- Phosphorylation/drug effects
- Proto-Oncogene Proteins c-myc/metabolism
- Rats
- Rats, Sprague-Dawley
- Reactive Oxygen Species/metabolism
- Receptor, Angiotensin, Type 1/metabolism
- Receptors, Adiponectin/genetics
- Receptors, Adiponectin/metabolism
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Affiliation(s)
- Li Li
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Zhi-Guo Zhang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Hong Lei
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Cheng Wang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Li-Peng Wu
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing, China
| | - Jin-Yu Wang
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Feng-Ying Fu
- Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Beijing, China
| | - Wei-Guo Zhu
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing, China
| | - Li-Ling Wu
- Department of Physiology and Pathophysiology, Peking University Health Science Center, and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
- * E-mail:
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11
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Abdominal and total adiposity and the risk of acute pancreatitis: a population-based prospective cohort study. Am J Gastroenterol 2013; 108:133-9. [PMID: 23147519 DOI: 10.1038/ajg.2012.381] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Previous research has indicated that obesity may be linked to the severity of acute pancreatitis. However, the association between abdominal and total adiposity as risk factors in the development of acute pancreatitis in a general population has not been studied. METHODS A follow-up study was conducted, using the Swedish Mammography Cohort and the Cohort of Swedish Men, to examine the association between waist circumference and body mass index (BMI) and the risk of first-time acute pancreatitis. Severe acute pancreatitis was defined as hospital stay of >14 days, in-hospital death, or mortality within 30 days of discharge. Cox proportional hazards models were used to estimate rate ratios (RRs) with 95% confidence intervals (CIs), adjusted for confounders. RESULTS In total, 68,158 individuals, aged 46-84 years, were studied for a median of 12 years. During this time, 424 persons developed first-time acute pancreatitis. The risk of acute pancreatitis among those with a waist circumference of >105 cm was twofold increased (RR=2.37; 95% CI: 1.50-3.74) compared with individuals with a waist circumference of 75.1-85.0 cm, when adjusted for confounders. This association was seen in patients with non-gallstone-related and gallstone-related acute pancreatitis. The results remained unchanged when stratifying the analyses with regards to sex or the severity of acute pancreatitis. There was no association between BMI and the risk of acute pancreatitis. CONCLUSIONS Abdominal adiposity, but not total adiposity, is an independent risk factor for the development of acute pancreatitis.
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12
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Demirci S, Akbal E, Koçak E, Taş A, Köklü S. Adipokine levels in the course of mild biliary pancreatitis. ANNALS OF NUTRITION AND METABOLISM 2012. [PMID: 23208155 DOI: 10.1159/000336288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Obesity markedly increases the risk of severe acute pancreatitis (AP). Several adipokines have been ascribed a role as a predictor of clinical severity in AP. Therefore, the aim of this study was to investigate a possible relationship between leptin and adiponectin and mild biliary AP. METHODS We included 24 consecutive patients with mild biliary AP and 24 consecutive healthy age- and sex-matched controls. Clinical severity was classified by the Ranson score. ELISA was used to assess leptin and adiponectin levels on admission and in remission. Complete blood cell counts and other laboratory tests were also performed at baseline and in remission. RESULTS Leptin, adiponectin, insulin and HOMA-IR measurements showed no difference in pancreatitis patients both on admission and in remission compared to the control group. No difference was found in leptin, insulin or HOMA-IR levels in the course of pancreatitis. However, adiponectin levels were higher in remission compared to admission. CONCLUSIONS Increased adiponectin levels in remission may be an indication of improvement in this condition. Further studies are needed to determine whether adiponectin provides protection from AP.
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Affiliation(s)
- Selim Demirci
- Department of Internal Medicine, Ankara Education and Research Hospital, Ministry of Health, Ankara, Turkey
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Preoperative CT scan helps to predict the occurrence of severe pancreatic fistula after pancreaticoduodenectomy. Ann Surg 2012; 256:139-45. [PMID: 22609844 DOI: 10.1097/sla.0b013e318256c32c] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To assess the influence of body fat distribution, estimated by a preoperative computed tomographic (CT) scan, on pancreatic fistula (PF) risk after pancreaticoduodenectomy (PD). BACKGROUND Pancreatic fatty infiltration is a predictive factor of PF, but accurate preoperative assessment is challenging. We hypothesized that it could be associated with an increased visceral obesity and could be assessed preoperatively. METHODS Over 18 months, 103 consecutive patients with PD and pancreaticogastrostomy were studied. Demographic, radiologic, and pathologic data were correlated to PF occurrence. Radiologic data included on a nonenhanced CT acquisition: pancreas, spleen, and liver density measures (Dpancreas, Dspleen, and Dliver [densities of the pancreas, spleen, and liver in hounsfield units], respectively), retro-renal fat thickness, and at the level of the umbilicus, total, visceral, and subcutaneous fat area (TFA [total fat area], VFA [visceral fat area], and SFA [subcutaneous fat area], respectively). Pancreatic fatty infiltration was graded histologically. Logistic regression analysis was used to identify independent predictors of PF-graded B and C according to the International Study Group on the Pancreatic Fistula. RESULTS Among the 103 patients, 37% (n = 38) developed a PF (47.4% grade A, 39.5% grade B, and 13.1% grade C). PF risk was correlated with pancreatic fatty infiltration (P = 0.017). In univariate analysis, male gender (P = 0.023), body mass index (BMI) over 25 kg/m (P = 0.02), retro-renal fat thickness over 15 mm (P = 0.006), TFA over the median (>233 cm; P = 0.023), and VFA over the median (>84 cm; P < 0.0001) were significantly associated with an increased risk of symptomatic PF (grade B and C). In multivariate analysis, VFA greater than 84 cm (OR = 8.16, P = 0.002) was the only independent predictive factor of grade B or C PF. Using the same model, a VFA greater than 84 cm was the only independent factor associated with the presence of fatty pancreas on pathologic examination. CONCLUSIONS Preoperative assessment of body fat distribution by a CT scan, as a surrogate for fatty pancreas infiltration, can help to predict the occurrence of clinically significant PF after PD.
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White PB, Ziegler KM, Swartz-Basile DA, Wang SS, Lillemoe KD, Pitt HA, Zyromski NJ. Obesity, but not high-fat diet, promotes murine pancreatic cancer growth. J Gastrointest Surg 2012; 16:1680-5. [PMID: 22688418 DOI: 10.1007/s11605-012-1931-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 05/30/2012] [Indexed: 01/31/2023]
Abstract
BACKGROUND Obesity accelerates pancreatic cancer growth; the mechanisms underlying this association are poorly understood. This study evaluated the hypothesis that obesity, rather than high-fat diet, is responsible for accelerated pancreatic cancer growth. METHODS Male C57BL/6J mice were studied after 19 weeks of high-fat (60 % fat; n = 20) or low-fat (10 % fat; n = 10) diet and 5 weeks of Pan02 murine pancreatic cancer growth (flank). RESULTS By two-way ANOVA, diet did not (p = 0.58), but body weight, significantly influenced tumor weight (p = 0.01). Tumor weight correlated positively with body weight (R (2) = 0.562; p < 0.001). Tumors in overweight mice were twice as large as those growing in lean mice (1.2 ± 0.2 g vs. 0.6 ± .01 g, p < 0.01), had significantly fewer apoptotic cells than those in lean mice (0.8 ± 0.4 vs 2.4 ± 0.5; p < 0.05), and greater adipocyte volume (3.7 vs. 2.2 %, p < 0.05). Apoptosis (R (2) = 0.472; p = 0.008) and serum adiponectin correlated negatively with tumor weight (R = 0.45; p < 0.05). CONCLUSIONS These data suggest that body weight, and not high-fat diet, is responsible for accelerated murine pancreatic cancer growth observed in this model of diet-induced obesity. Decreased tumor apoptosis appears to play an important mechanistic role in this process. The concept that decreased apoptosis is potentiated by hypoadiponectinemia (seen in obesity) deserves further investigation.
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Affiliation(s)
- Patrick B White
- Department of Surgery, Indiana University School of Medicine, 535 Barnhill Dr. RT 130, Indianapolis, IN 46202, USA
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ATF3 negatively regulates adiponectin receptor 1 expression. Biochem Biophys Res Commun 2010; 400:72-7. [PMID: 20696134 DOI: 10.1016/j.bbrc.2010.08.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Accepted: 08/03/2010] [Indexed: 01/31/2023]
Abstract
Adiponectin is an adipocyte-derived hormone that has antidiabetic and antiatherogenic effects through two membrane receptors, adiponectin receptor 1 (AdipoR1) and adiponectin receptor 2 (AdipoR2). Although it has been reported that the expression of AdipoR1 and AdipoR2 is regulated under physiological and pathophysiological states, their regulation is largely unknown. Previously, we demonstrated that endoplasmic reticulum (ER) stress or obesity-inducible ATF3 negatively regulates the expression of adiponectin and AdipoR2. Here, we investigated the regulation of another adiponectin receptor, AdipoR1 by ATF3, to determine if ATF3 may contribute to impairment of adiponectin signaling by repressing the expression of both adiponectin and adiponectin receptors. We found that treatment with thapsigargin, a stimulator of ATF3 expression as an inducer of ER stress, decreased AdipoR1 expression in insulin-sensitive cells (HepG2, C2C12) and insulin secreting cells (MIN6N8). Furthermore, overexpression of lentivirus carrying-ATF3 decreased AdipoR1 expression in those cells, demonstrating that ATF3 downregulates AdipoR1 expression. Next, we investigated the effects of ATF3 on human AdipoR1 promoter activity and identified an ATF3-responsive region in the promoter. Both thapsigargin treatment and ATF3 expression repressed AdipoR1 promoter activity. Transfection studies using mutant constructs containing 5'-deletions in the human AdipoR1 promoter revealed that putative ATF/CRE site is located between the -248 and -224, TGACGCGG. Chromatin immunoprecipitation assay demonstrated that ATF3 directly binds to human AdipoR1 promoter spanning from -248 to -224. Finally, deletion of the putative ATF/CRE site abrogated ATF3-mediated transrepression of the AdipoR1 promoter. Importantly, ATF3 expression was increased in hyperglycemia or TNF-α-treated C2C12 cells in which AdipoR1 expression was decreased, suggesting that ATF3 may contribute to downregulation of AdipoR1 by hyperglycemia and TNF-α. Collectively, these results demonstrate that ATF3 negatively regulates human AdipoR1 expression via binding to an ATF3-responsive region in the promoter, which plays an important role in attenuation of adiponectin signaling and induction of insulin resistance.
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Duarte-Rojo A, Sosa-Lozano LA, Saúl A, Herrera-Cáceres JO, Hernández-Cárdenas C, Vázquez-Lamadrid J, Robles-Díaz G. Methods for measuring abdominal obesity in the prediction of severe acute pancreatitis, and their correlation with abdominal fat areas assessed by computed tomography. Aliment Pharmacol Ther 2010; 32:244-53. [PMID: 20374222 DOI: 10.1111/j.1365-2036.2010.04321.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Obesity increases the risk for severe acute pancreatitis, although abdominal obesity may be a better prognostic marker. AIM To determine if a single anthropometric parameter best predicts severe acute pancreatitis and correlates with intra-abdominal fat. METHODS Ninety-nine patients with acute pancreatitis were studied prospectively. Anthropometry included body mass index (BMI) and girths (umbilical/minimum waist, iliac/trochanter hip, thigh). Several waist-to-hip/waist-to-thigh ratios (WHR/WTR) were constructed. A CT-scan with calculation of cross-sectional abdominal fat areas was obtained in 37 cases. RESULTS Severe acute pancreatitis occurred in 25 patients. Waist circumference (WC), WHR and WTR - all using the umbilical reference - most accurately predicted severe acute pancreatitis. Only umbilical WC was retained in multivariate analysis: the risk for severe acute pancreatitis increased 16% with every 1 cm (OR 1.16, 95%CI: 1.1-1.3). Abdominal obesity caused a 6-fold increase in risk. Umbilical WC correlated best with subcutaneous fat area (r = 0.791, P < 0.001), whereas WHR with intra-abdominal (r = 0.594, P < 0.001). CONCLUSIONS Abdominal obesity according to umbilical WC is a better predictor for development of severe acute pancreatitis than BMI, minimum WC, WHR and WTR. The protocol for anthropometry must be standardized as it may affect results. Both subcutaneous and intra-abdominal fat appears to affect the likelihood of a severe outcome.
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Affiliation(s)
- A Duarte-Rojo
- Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, México
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Brochu-Gaudreau K, Rehfeldt C, Blouin R, Bordignon V, Murphy BD, Palin MF. Adiponectin action from head to toe. Endocrine 2010; 37:11-32. [PMID: 20963555 DOI: 10.1007/s12020-009-9278-8] [Citation(s) in RCA: 218] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Accepted: 10/14/2009] [Indexed: 02/06/2023]
Abstract
Adiponectin, the most abundant protein secreted by white adipose tissue, is known for its involvement in obesity-related disorders such as insulin resistance, type 2 diabetes mellitus and atherosclerosis. Moreover, modulation of the circulating adiponectin concentration is observed in pathologies that are more or less obesity-related, such as cancer and rheumatoid arthritis. The wide distribution of adiponectin receptors in various organs and tissues suggests that adiponectin has pleiotropic effects on numerous physiological processes. Besides its well-known insulin-sensitizing, anti-inflammatory and antiatherosclerotic properties, accumulating evidence suggests that adiponectin may also have anticancer properties and be cardioprotective. A beneficial effect of adiponectin on female reproductive function was also suggested. Since adiponectin has numerous beneficial biological functions, its use as a therapeutic agent has been suggested. However, the use of adiponectin or its receptors as therapeutic targets is complicated by the presence of different adiponectin oligomeric isoforms and production sites, by multiple receptors with differing affinities for adiponectin isoforms, and by cell-type-specific effects in different tissues. In this review, we discuss the known and potential roles of adiponectin in various tissues and pathologies. The therapeutic promise of administration of adiponectin and the use of its circulating levels as a diagnostic biomarker are further discussed based on the latest experimental studies.
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Wang C, Guan Y, Yang J. Cytokines in the Progression of Pancreatic β-Cell Dysfunction. Int J Endocrinol 2010; 2010:515136. [PMID: 21113299 PMCID: PMC2989452 DOI: 10.1155/2010/515136] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Revised: 08/05/2010] [Accepted: 10/07/2010] [Indexed: 12/29/2022] Open
Abstract
The dysfunction of pancreatic β-cell and the reduction in β-cell mass are the decisive events in the progression of type 2 diabetes. There is increasing evidence that cytokines play important roles in the procedure of β-cell failure. Cytokines, such as IL-1β, IFN-γ, TNF-α, leptin, resistin, adiponectin, and visfatin, have been shown to diversely regulate pancreatic β-cell function. Recently, islet-derived cytokine PANcreatic DERived factor (PANDER or FAM3B) has also been demonstrated to be a regulator of islet β-cell function. The change in cytokine profile in islet and plasma is associated with pancreatic β-cell dysfunction and apoptosis. In this paper, we summarize and discuss the recent studies on the effects of certain important cytokines on pancreatic β-cell function. The imbalance in deleterious and protective cytokines plays pivotal roles in the development and progression of pancreatic β-cell dysfunction under insulin-resistant conditions.
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Affiliation(s)
- Chunjiong Wang
- Department of Physiology and Pathophysiology, Peking University Diabetes Center, Peking University Health Science Center, Beijing 100191, China
| | - Youfei Guan
- Department of Physiology and Pathophysiology, Peking University Diabetes Center, Peking University Health Science Center, Beijing 100191, China
| | - Jichun Yang
- Department of Physiology and Pathophysiology, Peking University Diabetes Center, Peking University Health Science Center, Beijing 100191, China
- *Jichun Yang:
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Frossard JL, Lescuyer P, Pastor CM. Experimental evidence of obesity as a risk factor for severe acute pancreatitis. World J Gastroenterol 2009; 15:5260-5. [PMID: 19908332 PMCID: PMC2776851 DOI: 10.3748/wjg.15.5260] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The incidence of acute pancreatitis, an inflammation of the pancreas, is increasing worldwide. Pancreatic injury is mild in 80%-90% of patients who recover without complications. The remaining patients may develop a severe disease with local complications such as acinar cell necrosis, abscess and remote organ injury including lung injury. The early prediction of the severity of the disease is an important goal for physicians in management of patients with acute pancreatitis in order to optimize the therapy and to prevent organ dysfunction and local complications. For that purpose, multiple clinical scale scores have been applied to patients with acute pancreatitis. Recently, a new problem has emerged: the increased severity of the disease in obese patients. However, the mechanisms by which obesity increases the severity of acute pancreatitis are unclear. Several hypotheses have been suggested: (1) obese patients have an increased inflammation within the pancreas; (2) obese patients have an increased accumulation of fat within and around the pancreas where necrosis is often located; (3) increase in both peri- and intra-pancreatic fat and inflammatory cells explain the high incidence of pancreatic inflammation and necrosis in obese patients; (4) hepatic dysfunction associated with obesity might enhance the systemic inflammatory response by altering the detoxification of inflammatory mediators; and (5) ventilation/perfusion mismatch leading to hypoxia associated with a low pancreatic flow might reduce the pancreatic oxygenation and further enhance pancreatic injury. Recent experimental investigations also show an increased mortality and morbidity in obese rodents with acute pancreatitis and the implication of the adipokines leptin and adiponectin. Such models are important to investigate whether the inflammatory response of the disease is enhanced by obesity. It is exciting to speculate that manipulation of the adipokine milieu has the potential to influence the severity of acute pancreatitis.
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Obesity and breast cancer: the roles of peroxisome proliferator-activated receptor-γ and plasminogen activator inhibitor-1. PPAR Res 2009; 2009:345320. [PMID: 19672469 PMCID: PMC2723729 DOI: 10.1155/2009/345320] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 05/18/2009] [Accepted: 06/10/2009] [Indexed: 01/01/2023] Open
Abstract
Breast cancer is the most prominent cancer among females in the United States. There are a number of risk factors associated with development of breast cancer, including consumption of a high-fat diet and obesity. Plasminogen activator inhibitor-1 (PAI-1) is a cytokine upregulated in obesity whose expression is correlated with a poor prognosis in breast cancer. As a key mediator of adipogenesis and regulator of adipokine production, peroxisome proliferator-activated receptor-γ (PPAR-γ) is involved in PAI-1 expression from adipose tissue. We summarize the current knowledge linking PPAR-γ and PAI-1 expression to high-fat diet and obesity in the risk of breast cancer.
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