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Ni Z, Lin X, Wen Q, Kintoko, Zhang S, Huang J, Xu X, Huang R. WITHDRAWN: Effect of 2-dodecyl-6-methoxycyclohexa-2, 5-diene-1, 4-dione, isolated from Averrhoa carambola L. (Oxalidaceae) roots, on advanced glycation end-product-mediated renal injury in type 2 diabetic KKAy mice. Toxicol Lett 2021; 339:88-96. [PMID: 33423876 DOI: 10.1016/j.toxlet.2020.11.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The Publisher regrets that this article is an accidental duplication of an article that has already been published in [Toxicology Letters, 339C (2021) 88–96], https://doi.org/10.1016/j.toxlet.2020.11.022. The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal
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Affiliation(s)
- Zheng Ni
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Xing Lin
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Qingwei Wen
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Kintoko
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Shijun Zhang
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Jianchun Huang
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Xiaohui Xu
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
| | - Renbin Huang
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China.
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Zhong J, Allen K, Rao X, Ying Z, Braunstein Z, Kankanala SR, Xia C, Wang X, Bramble LA, Wagner JG, Lewandowski R, Sun Q, Harkema JR, Rajagopalan S. Repeated ozone exposure exacerbates insulin resistance and activates innate immune response in genetically susceptible mice. Inhal Toxicol 2016; 28:383-92. [PMID: 27240593 DOI: 10.1080/08958378.2016.1179373] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Inhaled ozone (O3) has been demonstrated as a harmful pollutant and associated with chronic inflammatory diseases such as diabetes and vascular disorders. However, the underlying mechanisms by which O3 mediates harmful effects are poorly understood. OBJECTIVES To investigate the effect of O3 exposure on glucose intolerance, immune activation and underlying mechanisms in a genetically susceptible mouse model. METHODS Diabetes-prone KK mice were exposed to filtered air (FA), or O3 (0.5 ppm) for 13 consecutive weekdays (4 h/day). Insulin tolerance test (ITT) was performed following the last exposure. Plasma insulin, adiponectin, and leptin were measured by ELISA. Pathologic changes were examined by H&E and Oil-Red-O staining. Inflammatory responses were detected using flow cytometry and real-time PCR. RESULTS KK mice exposed to O3 displayed an impaired insulin response. Plasma insulin and leptin levels were reduced in O3-exposed mice. Three-week exposure to O3 induced lung inflammation and increased monocytes/macrophages in both blood and visceral adipose tissue. Inflammatory monocytes/macrophages increased both systemically and locally. CD4 + T cell activation was also enhanced by the exposure of O3 although the relative percentage of CD4 + T cell decreased in blood and adipose tissue. Multiple inflammatory genes including CXCL-11, IFN-γ, TNFα, IL-12, and iNOS were up-regulated in visceral adipose tissue. Furthermore, the expression of oxidative stress-related genes such as Cox4, Cox5a, Scd1, Nrf1, and Nrf2, increased in visceral adipose tissue of O3-exposed mice. CONCLUSIONS Repeated O3 inhalation induces oxidative stress, adipose inflammation and insulin resistance.
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Affiliation(s)
- Jixin Zhong
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Katryn Allen
- b EPA Great Lakes Clean Air Research Center, Michigan State University , East Lansing , MI , USA
| | - Xiaoquan Rao
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Zhekang Ying
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Zachary Braunstein
- c Boonshoft School of Medicine, Wright State University , Dayton , OH , USA , and
| | - Saumya R Kankanala
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Chang Xia
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Xiaoke Wang
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
| | - Lori A Bramble
- b EPA Great Lakes Clean Air Research Center, Michigan State University , East Lansing , MI , USA
| | - James G Wagner
- b EPA Great Lakes Clean Air Research Center, Michigan State University , East Lansing , MI , USA
| | - Ryan Lewandowski
- b EPA Great Lakes Clean Air Research Center, Michigan State University , East Lansing , MI , USA
| | - Qinghua Sun
- d Davis Heart & Lung Research Institute, Department of Internal Medicine, the Ohio State University , Columbus , OH , USA
| | - Jack R Harkema
- b EPA Great Lakes Clean Air Research Center, Michigan State University , East Lansing , MI , USA
| | - Sanjay Rajagopalan
- a Division of Cardiovascular Medicine , Department of Medicine, University of Maryland School of Medicine , Baltimore , MD , USA
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Kadowaki S, Munekane M, Kitamura Y, Hiromura M, Kamino S, Yoshikawa Y, Saji H, Enomoto S. Development of new zinc dithiosemicarbazone complex for use as oral antidiabetic agent. Biol Trace Elem Res 2013; 154:111-9. [PMID: 23712834 DOI: 10.1007/s12011-013-9704-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 05/13/2013] [Indexed: 01/11/2023]
Abstract
The increasing prevalence of diabetes mellitus (DM) worldwide has underscored the urgency of developing an efficient therapeutic agent. Recently, Zn complexes have been attracting attention due to their antidiabetic activity. In this study, we designed and synthesized a new Zn complex, Zn-3,4-heptanedione-bis(N (4)-methylthiosemicarbazonato) (Zn-HTSM), characterized its physicochemical properties, and examined its antidiabetic activity in KK-A(y) type 2 DM model mice. It was demonstrated that Zn-HTSM has adequate lipophilicity for the cellular permeability, shows potent hypoglycemic activity, and improves glucose intolerance in KK-A(y) mice. We also analyzed the levels of serum adipokines after continuous oral administration of Zn-HTSM. The level of serum leptin of KK-A(y) mice is significantly reduced by the treatment of Zn-HTSM. Nevertheless, the levels of serum insulin and adiponectin were not improved. These data suggested that the Zn-HTSM acts on the leptin metabolism. Our present studies indicate that Zn-HTSM is a candidate oral antidiabetic agent for the treatment of type 2 DM.
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Affiliation(s)
- Saori Kadowaki
- Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Zheng N, Lin X, Wen Q, Kintoko, Zhang S, Huang J, Xu X, Huang R. Effect of 2-dodecyl-6-methoxycyclohexa-2,5-diene-1,4-dione, isolated from Averrhoa carambola L. (Oxalidaceae) roots, on advanced glycation end-product-mediated renal injury in type 2 diabetic KKAy mice. Toxicol Lett 2013; 219:77-84. [PMID: 23500658 DOI: 10.1016/j.toxlet.2013.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 02/27/2013] [Accepted: 03/02/2013] [Indexed: 11/18/2022]
Abstract
The roots of Averrhoa carambola L. (Oxalidaceae) have a long history of medical use in traditional Chinese medicine for treating diabetes and diabetic nephropathy. 2-Dodecyl-6-methoxycyclohexa-2,5-diene-1,4-dione (DMDD) was isolated from the tuberous roots of A. carambola L. The purpose of this study was to investigate the beneficial effect of DMDD on the advanced glycation end-product-mediated renal injury in type 2 diabetic KKAy mice with regard to prove its efficacy by local traditional practitioners in the treatment of kidney frailties in diabetics. KKAy mice were orally administrated DMDD (12.5, 25, 50mg/kg body weight/d) or aminoguanidine (200mg/kg body weight/d) for 8 weeks. Hyperglycemia, renal AGE formation, and the expression of related proteins, such as the AGE receptor, nuclear factor-κB, transforming growth factor-β1, and N(ε)-(carboxymethyl)lysine, were markedly decreased by DMDD. Diabetes-dependent alterations in proteinuria, serum creatinine, creatinine clearance, and serum urea-N and glomerular mesangial matrix expansion were attenuated after treatment with DMDD for 8 weeks. The activities of superoxide dismutase and glutathione peroxidase, which are reduced in the kidneys of KKAy mice, were enhanced by DMDD. These findings suggest that DMDD may inhibit the progression of diabetic nephropathy and may be a therapeutic agent for regulating several pharmacological targets to treat or prevent of diabetic nephropathy.
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MESH Headings
- Administration, Oral
- Animals
- Antioxidants/metabolism
- Blotting, Western
- Cyclohexenes/administration & dosage
- Cyclohexenes/isolation & purification
- Cyclohexenes/therapeutic use
- Cyclohexenes/toxicity
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Diabetic Nephropathies/etiology
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/prevention & control
- Drugs, Chinese Herbal/administration & dosage
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/therapeutic use
- Drugs, Chinese Herbal/toxicity
- Embryophyta/chemistry
- Glycation End Products, Advanced/antagonists & inhibitors
- Glycation End Products, Advanced/metabolism
- Guanidines/administration & dosage
- Guanidines/pharmacology
- Lethal Dose 50
- Lipid Peroxidation/drug effects
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred Strains
- Plant Roots/chemistry
- Toxicity Tests, Acute
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Affiliation(s)
- Ni Zheng
- Department of Pharmacology, Guangxi Medical University, Nanning 530021, PR China
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Hammond JA, Bennett KA, Walton MJ, Hall AJ. Molecular cloning and expression of leptin in gray and harbor seal blubber, bone marrow, and lung and its potential role in marine mammal respiratory physiology. Am J Physiol Regul Integr Comp Physiol 2005; 289:R545-R553. [PMID: 15831765 DOI: 10.1152/ajpregu.00203.2004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Leptin is a multifunctional hormone, produced predominantly in adipocytes. It regulates energy balance through its impact on appetite and fat metabolism, and its concentration indicates the size of body fat reserves. Leptin also plays a vital role in stretch-induced surfactant production during alveolar development in the fetus. The structure, expression pattern, and role of leptin have not previously been explored in marine mammals. Phocid seals undergo cyclical changes in body composition as a result of prolonged fasting and intensive foraging bouts and experience rapid, dramatic, and repeated changes in lung volume during diving. Here, we report the tissue-specific expression pattern of leptin in these animals. This is the first demonstration of leptin expression in the lung tissue of a mature mammal, in addition to its expression in the blubber and bone marrow, in common with other animals. We propose a role for leptin in seal pulmonary surfactant production, in addition to its likely role in long-term energy balance. We identify substitutions in the phocine leptin sequence in regions normally highly conserved between widely distinct vertebrate groups, and, using a purified seal leptin antiserum, we confirm the presence of the leptin protein in gray seal lung and serum fractions. Finally, we report the substantial inadequacies of using heterologous antibodies to measure leptin in unextracted gray seal serum.
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Affiliation(s)
- John A Hammond
- Sea Mammal Research Unit, Gatty Marine Laboratory, University of St Andrews, St Andrews, Scotland, KY16 8LB, UK.
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Matsuda H, Koyama H, Sato H, Sawada J, Itakura A, Tanaka A, Matsumoto M, Konno K, Ushio H, Matsuda K. Role of nerve growth factor in cutaneous wound healing: accelerating effects in normal and healing-impaired diabetic mice. J Exp Med 1998; 187:297-306. [PMID: 9449710 PMCID: PMC2212117 DOI: 10.1084/jem.187.3.297] [Citation(s) in RCA: 162] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Four full-thickness skin wounds made in normal mice led to the significant increase in levels of nerve growth factor (NGF) in sera and in wounded skin tissues. Since sialoadenectomy before the wounds inhibited the rise in serum levels of NGF, the NGF may be released from the salivary gland into the blood stream after the wounds. In contrast, the fact that messenger RNA and protein of NGF were detected in newly formed epithelial cells at the edge of the wound and fibroblasts consistent with the granulation tissue produced in the wound space, suggests that NGF was also produced at the wounded skin site. Topical application of NGF into the wounds accelerated the rate of wound healing in normal mice and in healing-impaired diabetic KK/Ta mice. This clinical effect of NGF was evaluated by histological examination; the increases in the degree of reepithelialization, the thickness of the granulation tissue, and the density of extracellular matrix were observed. NGF also increased the breaking strength of healing linear wounds in normal and diabetic mice. These findings suggested that NGF immediately and constitutively released in response to cutaneous injury may contribute to wound healing through broader biological activities, and NGF improved the diabetic impaired response of wound healing.
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Affiliation(s)
- H Matsuda
- Department of Veterinary Clinic, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183, Japan.
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