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Semerena E, Nencioni A, Masternak K. Extracellular nicotinamide phosphoribosyltransferase: role in disease pathophysiology and as a biomarker. Front Immunol 2023; 14:1268756. [PMID: 37915565 PMCID: PMC10616597 DOI: 10.3389/fimmu.2023.1268756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/03/2023] [Indexed: 11/03/2023] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) plays a central role in mammalian cell metabolism by contributing to nicotinamide adenine dinucleotide biosynthesis. However, NAMPT activity is not limited to the intracellular compartment, as once secreted, the protein accomplishes diverse functions in the extracellular space. Extracellular NAMPT (eNAMPT, also called visfatin or pre-B-cell colony enhancing factor) has been shown to possess adipocytokine, pro-inflammatory, and pro-angiogenic activities. Numerous studies have reported the association between elevated levels of circulating eNAMPT and various inflammatory and metabolic disorders such as obesity, diabetes, atherosclerosis, arthritis, inflammatory bowel disease, lung injury and cancer. In this review, we summarize the current state of knowledge on eNAMPT biology, proposed roles in disease pathogenesis, and its potential as a disease biomarker. We also briefly discuss the emerging therapeutic approaches for eNAMPT inhibition.
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Affiliation(s)
- Elise Semerena
- Light Chain Bioscience - Novimmune SA, Plan-les-Ouates, Switzerland
| | - Alessio Nencioni
- Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa, Italy
- Ospedale Policlinico San Martino IRCCS, Genoa, Italy
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Panizza E, Regalado BD, Wang F, Nakano I, Vacanti NM, Cerione RA, Antonyak MA. Proteomic analysis reveals microvesicles containing NAMPT as mediators of radioresistance in glioma. Life Sci Alliance 2023; 6:e202201680. [PMID: 37037593 PMCID: PMC10087103 DOI: 10.26508/lsa.202201680] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 03/29/2023] [Accepted: 03/29/2023] [Indexed: 04/12/2023] Open
Abstract
Tumor-initiating cells contained within the aggressive brain tumor glioma (glioma stem cells, GSCs) promote radioresistance and disease recurrence. However, mechanisms of resistance are not well understood. Herein, we show that the proteome-level regulation occurring upon radiation treatment of several patient-derived GSC lines predicts their resistance status, whereas glioma transcriptional subtypes do not. We identify a mechanism of radioresistance mediated by the transfer of the metabolic enzyme NAMPT to radiosensitive cells through microvesicles (NAMPT-high MVs) shed by resistant GSCs. NAMPT-high MVs rescue the proliferation of radiosensitive GSCs and fibroblasts upon irradiation, and upon treatment with a radiomimetic drug or low serum, and increase intracellular NAD(H) levels. Finally, we show that the presence of NAMPT within the MVs and its enzymatic activity in recipient cells are necessary to mediate these effects. Collectively, we demonstrate that the proteome of GSCs provides unique information as it predicts the ability of glioma to resist radiation treatment. Furthermore, we establish NAMPT transfer via MVs as a mechanism for rescuing the proliferation of radiosensitive cells upon irradiation.
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Affiliation(s)
- Elena Panizza
- Department of Molecular Medicine, Cornell University, Ithaca, NY, USA
| | | | - Fangyu Wang
- Department of Molecular Medicine, Cornell University, Ithaca, NY, USA
| | - Ichiro Nakano
- Department of Neurosurgery, Medical Institute Hokuto Hospital, Hokkaido, Japan
| | | | - Richard A Cerione
- Department of Molecular Medicine, Cornell University, Ithaca, NY, USA
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Marc A Antonyak
- Department of Molecular Medicine, Cornell University, Ithaca, NY, USA
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Manickam R, Tur J, Badole SL, Chapalamadugu KC, Sinha P, Wang Z, Russ DW, Brotto M, Tipparaju SM. Nampt activator P7C3 ameliorates diabetes and improves skeletal muscle function modulating cell metabolism and lipid mediators. J Cachexia Sarcopenia Muscle 2022; 13:1177-1196. [PMID: 35060352 PMCID: PMC8977983 DOI: 10.1002/jcsm.12887] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/22/2021] [Accepted: 11/22/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Nicotinamide phosphoribosyltransferase (Nampt), a key enzyme in NAD salvage pathway is decreased in metabolic diseases, and its precise role in skeletal muscle function is not known. We tested the hypothesis, Nampt activation by P7C3 (3,6-dibromo-α-[(phenylamino)methyl]-9H-carbazol-9-ethanol) ameliorates diabetes and muscle function. METHODS We assessed the functional, morphometric, biochemical, and molecular effects of P7C3 treatment in skeletal muscle of type 2 diabetic (db/db) mice. Nampt+/- mice were utilized to test the specificity of P7C3. RESULTS Insulin resistance increased 1.6-fold in diabetic mice compared with wild-type mice and after 4 weeks treatment with P7C3 rescued diabetes (P < 0.05). In the db-P7C3 mice fasting blood glucose levels decreased to 0.96-fold compared with C57Bl/6J wild-type naïve control mice. The insulin and glucose tolerance tests blood glucose levels were decreased to 0.6-fold and 0.54-folds, respectively, at 120 min along with an increase in insulin secretion (1.76-fold) and pancreatic β-cells (3.92-fold) in db-P7C3 mice. The fore-limb and hind-limb grip strengths were increased to 1.13-fold and 1.17-fold, respectively, together with a 14.2-fold increase in voluntary running wheel distance in db-P7C3 mice. P7C3 treatment resulted in a 1.4-fold and 7.1-fold increase in medium-sized and larger-sized myofibres cross-sectional area, with a concomitant 0.5-fold decrease in smaller-sized myofibres of tibialis anterior (TA) muscle. The transmission electron microscopy images also displayed a 1.67-fold increase in myofibre diameter of extensor digitorum longus muscle along with 2.9-fold decrease in mitochondrial area in db-P7C3 mice compared with db-Veh mice. The number of SDH positive myofibres were increased to 1.74-fold in db-P7C3 TA muscles. The gastrocnemius and TA muscles displayed a decrease in slow oxidative myosin heavy chain type1 (MyHC1) myofibres expression (0.46-fold) and immunostaining (6.4-fold), respectively. qPCR analysis displayed a 2.9-fold and 1.3-fold increase in Pdk4 and Cpt1, and 0.55-fold and 0.59-fold decrease in Fgf21 and 16S in db-P7C3 mice. There was also a 3.3-fold and 1.9-fold increase in Fabp1 and CD36 in db-Veh mice. RNA-seq differential gene expression volcano plot displayed 1415 genes to be up-regulated and 1726 genes down-regulated (P < 0.05) in db-P7C3 mice. There was 1.02-fold increase in serum HDL, and 0.9-fold decrease in low-density lipoprotein/very low-density lipoprotein ratio in db-P7C3 mice. Lipid profiling of gastrocnemius muscle displayed a decrease in inflammatory lipid mediators n-6; AA (0.83-fold), and n-3; DHA (0.69-fold) and EPA (0.81-fold), and a 0.66-fold decrease in endocannabinoid 2-AG and 2.0-fold increase in AEA in db-P7C3 mice. CONCLUSIONS Overall, we demonstrate that P7C3 activates Nampt, improves type 2 diabetes and skeletal muscle function in db/db mice.
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Affiliation(s)
- Ravikumar Manickam
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Jared Tur
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Sachin L Badole
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Kalyan C Chapalamadugu
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Puja Sinha
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
| | - Zhiying Wang
- Bone-Muscle Research Center, College of Nursing & Health Innovation, University of Texas-Arlington (UTA), Arlington, TX, USA
| | - David W Russ
- School of Physical Therapy and Rehabilitation Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Marco Brotto
- Bone-Muscle Research Center, College of Nursing & Health Innovation, University of Texas-Arlington (UTA), Arlington, TX, USA
| | - Srinivas M Tipparaju
- Department of Pharmaceutical Sciences, Taneja College of Pharmacy, University of South Florida, Tampa, FL, USA
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Shokrollahi B, Shang JH, Saadati N, Ahmad HI, Yang CY. Reproductive roles of novel adipokines apelin, visfatin, and irisin in farm animals. Theriogenology 2021; 172:178-186. [PMID: 34175524 DOI: 10.1016/j.theriogenology.2021.06.011] [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] [Received: 03/15/2021] [Revised: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 12/31/2022]
Abstract
The adipose tissue has a substantial impact on reproduction in mammals, specifically in females. As an energy depository organ, it is precisely associated with the reproductive success of mammals. Adipose tissue secretes many single molecules that are called 'adipokines' which mainly act as endocrine hormones. Adipokines homeostasis is fundamental to energy regulation, metabolic and cardiovascular diseases. The endocrine function of adipokines is influential for the long-term control of energy metabolism and performs an important function in metabolic state and fertility modulation. During the last years, new roles for adipokines have been appearing in the field of fertility. The adipokines have functions in reproduction at levels of the hypothalamus, the pituitary, and the gonads in humans, rodents, and other animals. Normal levels of adipokines are indispensable to protect the integrity of the hypothalamus-hypophysis-gonadal axis, regular ovulatory processes, and successful embryo implantation. Leptin and adiponectin are the most studied adipokines, but also the novel adipokines; apelin, visfatin, and irisin are important adipokines having several functions within the reproductive tract. Due to the known and unknown effects of these novel adipokines in the reproduction of farm animals, in this review, we will highlight the reproductive functions of apelin, visfatin, and irisin and summarize the known reproductive effects in farm animals to introduce the gaps for future studies in farm animals.
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Affiliation(s)
- Borhan Shokrollahi
- Department of Animal Science, Faculty of Agriculture, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran.
| | - Jiang-Hua Shang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, 530001, China
| | - Nazila Saadati
- Department of Plant Biotechnology, Faculty of Agriculture, Kurdistan University, Sanandaj, Kurdistan province, Iran
| | - Hafiz Ishfaq Ahmad
- Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Ravi Campus, Pattoki, Pakistan
| | - Chun-Yan Yang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, 530001, China
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Kaminski T, Kiezun M, Zaobidna E, Dobrzyn K, Wasilewska B, Mlyczynska E, Rytelewska E, Kisielewska K, Gudelska M, Bors K, Kopij G, Szymanska K, Kaminska B, Rak A, Smolinska N. Plasma level and expression of visfatin in the porcine hypothalamus during the estrous cycle and early pregnancy. Sci Rep 2021; 11:8698. [PMID: 33888798 PMCID: PMC8062436 DOI: 10.1038/s41598-021-88103-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 04/07/2021] [Indexed: 02/02/2023] Open
Abstract
Visfatin appears to be an energy sensor involved in the regulation of female fertility, which creates a hormonal link integrating the control of energy homeostasis and reproduction. This study evaluates the expression levels of visfatin gene and protein in selected areas of the porcine hypothalamus responsible for gonadotropin-releasing hormone synthesis: the mediobasal hypothalamus (MBH) and preoptic area (POA), and visfatin concentrations in the blood plasma. The tissue samples were harvested from gilts on days 2-3, 10-12, 14-16, and 17-19 of the estrous cycle, and on days 10-11, 12-13, 15-16, 27-28 of pregnancy. Visfatin was localized in the cytoplasm and nucleus of cells creating both studied hypothalamic structures. The study demonstrated that visfatin gene and protein expression in MBH and POA depends on hormonal status related to the phase of the estrous cycle or early pregnancy. Blood plasma concentrations of visfatin during the estrous cycle were higher on days 2-3 in relation to other studied phases of the cycle, while during early pregnancy, the highest visfatin contents were observed on days 12-13. This study demonstrated visfatin expression in the porcine hypothalamus and its dependence on the hormonal milieu related to the estrous cycle and early pregnancy.
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Affiliation(s)
- Tadeusz Kaminski
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Marta Kiezun
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Ewa Zaobidna
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Kamil Dobrzyn
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Barbara Wasilewska
- grid.412607.60000 0001 2149 6795Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury in Olsztyn, Warszawska St. 30, 10-082 Olsztyn, Poland
| | - Ewa Mlyczynska
- grid.5522.00000 0001 2162 9631Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Gronostajowa St. 9, 31–387 Krakow, Poland
| | - Edyta Rytelewska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Katarzyna Kisielewska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Marlena Gudelska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Kinga Bors
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Grzegorz Kopij
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Karolina Szymanska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Barbara Kaminska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
| | - Agnieszka Rak
- grid.5522.00000 0001 2162 9631Department of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University in Krakow, Gronostajowa St. 9, 31–387 Krakow, Poland
| | - Nina Smolinska
- grid.412607.60000 0001 2149 6795Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 1A, 10-719 Olsztyn-Kortowo, Poland
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Tyszkiewicz-Nwafor M, Dutkiewicz A, Paszynska E, Dmitrzak-Weglarz M, Slopien A. Omentin and visfatin in adolescent inpatients with anorexia nervosa; association with symptoms. Neuropeptides 2021; 86:102133. [PMID: 33626391 DOI: 10.1016/j.npep.2021.102133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/23/2021] [Accepted: 02/11/2021] [Indexed: 12/16/2022]
Abstract
Anorexia nervosa (AN) is associated with significant weight loss; thus, it is crucial to discern the contribution of hormones produced by adipose tissue. Some of the adipokines have not been sufficiently studied. Therefore, the present study aims to measure serum concentrations of omentin and visfatin, in adolescent inpatients with AN. The correlations between selected adipokines and psychopathological symptoms of AN were also analyzed. Thirty adolescent inpatients with anorexia nervosa and thirty healthy age and height matched girls (CONT) were enrolled in the study. The physical and mental examination, anthropometric and psychometric assessment - Beck Depression Inventory (BDI), Hamilton Depression Rating Scale (HDRS), Eating Attitude Test (EAT-26) and Yale-Brown Obsessive-Compulsive Scale (YBOCS), and blood analysis were performed at two-time points - in the malnourished patients (AN T1) and after partial weight recovery (8.30 ± 3.75 weeks) (AN T2). The omentin concentration was not significantly different from the CONT neither in AN T1 nor AN T2. The visfatin level was altered in AN T1 and did not change after partial weight normalization (AN T2). A positive correlation between visfatin and YBOCS was found in AN T2. Visfatin concentrations were decreased in adolescent inpatients suffering from AN in the acute phase of the disease and did not normalize after partial weight restoration. The studies considering visfatin as a biomarker of the acute phase of AN should be continued. Moreover, the visfatin showed association with the obsessive and compulsive symptoms; thus its participation in non-homeostatic regulation of food intake should be investigated in further studies.
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Affiliation(s)
- Marta Tyszkiewicz-Nwafor
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 27/33 Szpitalna St., 60-572 Poznan, Poland.
| | - Agata Dutkiewicz
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 27/33 Szpitalna St., 60-572 Poznan, Poland.
| | - Elzbieta Paszynska
- Department of Integrated Dentistry, Poznan University of Medical Sciences, 70 Bukowska St., 60-812 Poznan, Poland.
| | - Monika Dmitrzak-Weglarz
- Department of Psychiatric Genetics, Poznan University of Medical Sciences, 8 Rokietnicka St., 60-806 Poznan, Poland.
| | - Agnieszka Slopien
- Department of Child and Adolescent Psychiatry, Poznan University of Medical Sciences, 27/33 Szpitalna St., 60-572 Poznan, Poland.
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Oster H, Mittag J, Schmid SM. [From neuroendocrinology to widespread diseases in internal medicine]. Dtsch Med Wochenschr 2021; 146:287-291. [PMID: 33592665 DOI: 10.1055/a-1273-1657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shade C. The Science Behind NMN-A Stable, Reliable NAD+Activator and Anti-Aging Molecule. Integr Med (Encinitas) 2020; 19:12-14. [PMID: 32549859 PMCID: PMC7238909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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9
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Ibrahim DM, Mohamed NR, Fouad TA, Soliman AF. Short-Term Impact of Laparoscopic Sleeve Gastrectomy on Serum Cartonectin and Vaspin Levels in Obese Subjects. Obes Surg 2019; 28:3237-3245. [PMID: 29862443 DOI: 10.1007/s11695-018-3306-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Cartonectin is a potent anti-inflammatory adipokine that might be implicated in metabolism and energy storage. Our objective was to evaluate the influence of weight reduction following laparoscopic sleeve gastrectomy (LSG) on serum cartonectin and vaspin levels. SUBJECTS AND METHODS Thirty-two individuals (29 female and 3 male) with morbid obesity underwent LSG. Anthropometric indices, lipid profile, fasting serum concentrations of glucose, insulin, vaspin, and cartonectin were measured prior and 3 months after LSG. Insulin sensitivity was determined using the homeostasis model assessment of insulin resistance (HOMA-IR). RESULTS Following LSG, circulating cartonectin level increased significantly while serum vaspin was significantly decreased. The percentage change of serum cartonectin level correlated negatively with the percentage changes in body mass index, waist circumference, and waist-hip ratio and positively with percentage changes in LDL-C, triglycerides, and HOMA-IR after adjustment for age and sex. Moreover, the changes in vaspin concentration positively correlated with the changes in insulin level and HOMA-IR after adjustment for age and sex. In a multiple stepwise linear regression model, the changes in waist circumference explained 13% variability of changes in cartonectin level while the changes in HOMA-IR and LDL-C were responsible for 31% of the variability in changes of vaspin level. CONCLUSION LSG-induced weight loss rapidly increases serum cartonectin level and decreases the serum vaspin level in morbidly obese subjects. The changes in cartonictin level seem to be influenced by the changes of waist circumference while the changes of HOMA-IR and LDL-C might be determinant factors of the changes in vaspin level.
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Affiliation(s)
- Doaa M Ibrahim
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
| | - Nagwa R Mohamed
- Internal Medicine and Endocrinology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Tarek A Fouad
- Internal Medicine Department, El-Mataria Teaching Hospital, The General Organization for Teaching Hospitals and Institutes, Cairo, Egypt
| | - Ahmed F Soliman
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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Estienne A, Bongrani A, Reverchon M, Ramé C, Ducluzeau PH, Froment P, Dupont J. Involvement of Novel Adipokines, Chemerin, Visfatin, Resistin and Apelin in Reproductive Functions in Normal and Pathological Conditions in Humans and Animal Models. Int J Mol Sci 2019; 20:ijms20184431. [PMID: 31505789 PMCID: PMC6769682 DOI: 10.3390/ijms20184431] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 12/23/2022] Open
Abstract
It is well known that adipokines are endocrine factors that are mainly secreted by white adipose tissue. Their central role in energy metabolism is currently accepted. More recently, their involvement in fertility regulation and the development of some reproductive disorders has been suggested. Data concerning the role of leptin and adiponectin, the two most studied adipokines, in the control of the reproductive axis are consistent. In recent years, interest has grown about some novel adipokines, chemerin, visfatin, resistin and apelin, which have been found to be strongly associated with obesity and insulin-resistance. Here, we will review their expression and role in male and female reproduction in humans and animal models. According to accumulating evidence, they could regulate the secretion of GnRH (Gonadotropin-Releasing Hormone), gonadotropins and steroids. Furthermore, their expression and that of their receptors (if known), has been demonstrated in the human and animal hypothalamo-pituitary-gonadal axis. Like leptin and adiponectin, these novel adipokines could thus represent metabolic sensors that are able to regulate reproductive functions according to energy balance changes. Therefore, after investigating their role in normal fertility, we will also discuss their possible involvement in some reproductive troubles known to be associated with features of metabolic syndrome, such as polycystic ovary syndrome, gestational diabetes mellitus, preeclampsia and intra-uterine growth retardation in women, and sperm abnormalities and testicular pathologies in men.
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Affiliation(s)
- Anthony Estienne
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, F-37380 Nouzilly, France
| | - Alice Bongrani
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, F-37380 Nouzilly, France
| | - Maxime Reverchon
- SYSAAF-Syndicat des Sélectionneurs Avicoles et Aquacoles Français, Centre INRA Val de Loire, F-37380 Nouzilly, France
| | - Christelle Ramé
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, F-37380 Nouzilly, France
| | - Pierre-Henri Ducluzeau
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, F-37380 Nouzilly, France
- Internal Medicine Department, Unit of Endocrinology, CHRU Tours, F-37044 Tours, France
| | - Pascal Froment
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, F-37380 Nouzilly, France
| | - Joëlle Dupont
- INRA UMR 85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France.
- CNRS UMR 7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France.
- Université François Rabelais de Tours F-37041 Tours, France.
- IFCE, F-37380 Nouzilly, France.
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Dinu M, Colombini B, Pagliai G, Cesari F, Gori A, Giusti B, Marcucci R, Sofi F. Effects of a dietary intervention with Mediterranean and vegetarian diets on hormones that influence energy balance: results from the CARDIVEG study. Int J Food Sci Nutr 2019; 71:362-369. [PMID: 31462113 DOI: 10.1080/09637486.2019.1658723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A randomised, open, crossover trial with two intervention periods was used to compare the effects of a 3-month dietary intervention with Mediterranean diet (MD) and vegetarian diet (VD) on hormones that influence energy balance, and to investigate the relationship with changes in body composition. After 3 months, no significant differences between the two diets were observed. Both MD and VD resulted in a significant (p < .05) reduction in leptin-to-adiponectin ratio and anthropometric parameters, MD resulted in a significant decrease in leptin levels (-7.4%), while VD determined a significant increase in adiponectin (+6.8%) and a significant decrease in visfatin (-12.7%) levels. In both groups, changes in leptin, insulin and HOMA-IR were significantly and positively correlated with changes in anthropometric parameters. In conclusion, both MD and VD have led to a slight but significant improvement in hormones that influence energy balance. The effect was more evident in participants who lost weight and fat mass.
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Affiliation(s)
- Monica Dinu
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Barbara Colombini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giuditta Pagliai
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Francesca Cesari
- Central Laboratory, Careggi University Hospital, Florence, Italy
| | - Annamaria Gori
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Unit of Atherothrombotic Diseases, Careggi University Hospital, Florence, Italy
| | - Betti Giusti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Unit of Atherothrombotic Diseases, Careggi University Hospital, Florence, Italy
| | - Rossella Marcucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Unit of Atherothrombotic Diseases, Careggi University Hospital, Florence, Italy
| | - Francesco Sofi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Unit of Clinical Nutrition, Careggi University Hospital, Florence, Italy.,IRCCS Don Carlo Gnocchi Foundation, Milan, Italy
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12
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Pace NP, Bonello A, Roshan MH, Vassallo J. Circulating visfatin levels in the second and third trimester of pregnancies with gestational diabetes: a systematic review. MINERVA GINECOLOGICA 2019; 71:329-343. [PMID: 31274262 DOI: 10.23736/s0026-4784.18.04293-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION There are multiple published conflicting associations of the adipocytokine visfatin with gestational diabetes. In this study, we attempted to investigate this relationship via a systematic review of the published literature. EVIDENCE ACQUISITION Literature retrieval using PubMed, Google Scholar, Scopus and Hydi databases followed by article selection and data extraction were conducted. Relevant studies published up to June 2018 were included. In total, 29 cohorts that were published in 27 articles were analyzed. Three studies carried out in early pregnancy were excluded. A total of 2365 individuals, with 1069 gestational diabetes (GDM) cases and 1296 controls from studies describing visfatin in the second or third trimester of gestation were included. EVIDENCE SYNTHESIS The difference in visfatin levels between women with GDM and the controls in the second and third trimester was measured by weighted mean difference (WMD) and 95% confidence intervals (CI). Heterogeneity was inspected by using both subgroup and meta-regression analysis. Analysis was restricted to studies describing singleton pregnancies. The quality of included studies was assessed by the Newcastle-Ottawa Scale. CONCLUSIONS No significant difference in circulating visfatin levels in GDM during the second trimester of pregnancy (WMD -0.30 ng/mL, 95% CI: -2.06, 1.45, SE=0.895, P=0.733) was detected. Meta-analysis of the studies in the third trimester revealed a significant negative effect, that was however driven by only one study. This finding limits the meaningful interpretation of the pooled analysis. Significant heterogeneity was identified between studies, and meta-regression analysis showed that homeostatic model assessment for insulin resistance contributes significantly to heterogeneity. In conclusion, our findings suggest that peripheral blood visfatin concentration cannot be robustly associated with gestational diabetes status in the second and third trimesters of pregnancy.
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Affiliation(s)
- Nikolai P Pace
- Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta -
| | - Antonia Bonello
- Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta
| | - Mohsin H Roshan
- Centre for Molecular Medicine and Biobanking, University of Malta, Msida, Malta
| | - Josanne Vassallo
- Department of Medicine, Faculty of Medicine and Surgery, University of Malta, Msida, Malta
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13
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Huang X, Wang C, Tian S, Huang R, Guo D, Zhang H, Shi J, Wang S. Higher Plasma Level of Nampt Presaging Memory Dysfunction in Chinese Type 2 Diabetes Patients with Mild Cognitive Impairment. J Alzheimers Dis 2019; 70:303-314. [PMID: 31177228 DOI: 10.3233/jad-190269] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xi Huang
- Department of Endocrinology, The Affiliated ZhongDa Hospital of Southeast University, Nanjing, PR China
| | - Chenchen Wang
- Department of Endocrinology, The Affiliated ZhongDa Hospital of Southeast University, Nanjing, PR China
- Medical School of Southeast University, Nanjing, PR China
| | - Sai Tian
- Medical School of Southeast University, Nanjing, PR China
| | - Rong Huang
- Medical School of Southeast University, Nanjing, PR China
| | - Dan Guo
- Medical School of Southeast University, Nanjing, PR China
| | - Haoqiang Zhang
- Medical School of Southeast University, Nanjing, PR China
| | - Jijing Shi
- Medical School of Southeast University, Nanjing, PR China
| | - Shaohua Wang
- Department of Endocrinology, The Affiliated ZhongDa Hospital of Southeast University, Nanjing, PR China
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14
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Oita RC, Camp SM, Ma W, Ceco E, Harbeck M, Singleton P, Messana J, Sun X, Wang T, Garcia JGN. Novel Mechanism for Nicotinamide Phosphoribosyltransferase Inhibition of TNF-α-mediated Apoptosis in Human Lung Endothelial Cells. Am J Respir Cell Mol Biol 2019; 59:36-44. [PMID: 29337590 DOI: 10.1165/rcmb.2017-0155oc] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) exists as both intracellular NAMPT and extracellular NAMPT (eNAMPT) proteins. eNAMPT is secreted into the blood and functions as a cytokine/enzyme (cytozyme) that activates NF-κB signaling via ligation of Toll-like receptor 4 (TLR4), further serving as a biomarker for inflammatory lung disorders such as acute respiratory distress syndrome. In contrast, intracellular NAMPT is involved in nicotinamide mononucleotide synthesis and has been implicated in the regulation of cellular apoptosis, although the exact mechanisms for this regulation are poorly understood. We examined the role of NAMPT in TNF-α-induced human lung endothelial cell (EC) apoptosis and demonstrated that reduced NAMPT expression (siRNA) increases EC susceptibility to TNF-α-induced apoptosis as reflected by PARP-1 cleavage and caspase-3 activation. In contrast, overexpression of NAMPT served to reduce degrees of TNF-α-induced EC apoptosis. Inhibition of nicotinamide mononucleotide synthesis by FK866 (a selective NAMPT enzymatic inhibitor) failed to alter TNF-α-induced human lung EC apoptosis, suggesting that NAMPT-dependent NAD+ generation is unlikely to be involved in regulation of TNF-α-induced EC apoptosis. We next confirmed that TNF-α-induced EC apoptosis is attributable to NAMPT secretion into the EC culture media and subsequent eNAMPT ligation of TLR4 on the EC membrane surface. Silencing of NAMPT expression, direct neutralization of secreted eNAMPT by an NAMPT-specific polyclonal antibody (preventing TLR4 ligation), or direct TLR4 antagonism all served to significantly increase EC susceptibility to TNF-α-induced EC apoptosis. Together, these studies provide novel insights into NAMPT contributions to lung inflammatory events and to novel mechanisms of EC apoptosis regulation.
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Affiliation(s)
- Radu C Oita
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Sara M Camp
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Wenli Ma
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Ermelinda Ceco
- 2 Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Mark Harbeck
- 2 Institute for Personalized Respiratory Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | | | - Joe Messana
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Xiaoguang Sun
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Ting Wang
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
| | - Joe G N Garcia
- 1 Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona Health Sciences, University of Arizona, Tucson, Arizona
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15
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Demarest TG, Truong GTD, Lovett J, Mohanty JG, Mattison JA, Mattson MP, Ferrucci L, Bohr VA, Moaddel R. Assessment of NAD +metabolism in human cell cultures, erythrocytes, cerebrospinal fluid and primate skeletal muscle. Anal Biochem 2019; 572:1-8. [PMID: 30822397 DOI: 10.1016/j.ab.2019.02.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 02/21/2019] [Accepted: 02/21/2019] [Indexed: 12/26/2022]
Abstract
The reduction-oxidation state of NAD+/NADH is critical for cellular health with NAD+ and its metabolites playing critical roles in aging and pathologies. Given the inherent autooxidation of reduced dinucleotides (i.e. NADH/NADPH), and the well-established differential stability, the accurate measurement of NAD+ and its metabolites is technically challenging. Moreover, sample processing, normalization and measurement strategies can profoundly alter results. Here we developed a rapid and sensitive liquid chromatography mass spectrometry-based method to quantify the NAD+ metabolome with careful consideration of these intrinsic chemical instabilities. Utilizing this method we assess NAD+ metabolite stabilities and determine the presence and concentrations of NAD+ metabolites in clinically relevant human samples including cerebrospinal fluid, erythrocytes, and primate skeletal muscle.
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Affiliation(s)
- Tyler G Demarest
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Gia Thinh D Truong
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Jacqueline Lovett
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Joy G Mohanty
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Julie A Mattison
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Mark P Mattson
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Luigi Ferrucci
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Vilhelm A Bohr
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Ruin Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
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16
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Dimitriadis GK, Kaur J, Adya R, Miras AD, Mattu HS, Hattersley JG, Kaltsas G, Tan BK, Randeva HS. Chemerin induces endothelial cell inflammation: activation of nuclear factor-kappa beta and monocyte-endothelial adhesion. Oncotarget 2018; 9:16678-16690. [PMID: 29682177 PMCID: PMC5908278 DOI: 10.18632/oncotarget.24659] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 02/27/2018] [Indexed: 01/21/2023] Open
Abstract
Chemerin, a chemoattractant protein, acts via a G-protein coupled chemokine receptor, i.e. Chemokine like Receptor 1/ChemR23; levels of which are elevated in pro-inflammatory states such as obesity and type 2 diabetes mellitus (T2DM). Obesity and T2DM patients are at high risk of developing cardiovascular disorders such as atherosclerosis. We have reported that chemerin induces human endothelial cell angiogenesis and since dysregulated angiogenesis and endothelial dysfunction are hallmarks of vascular disease; we sought to determine the effects of chemerin on monocyte-endothelial adhesion, and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), a critical pro-inflammatory transcription factor. Human endothelial cells were transfected with pNF-kappaB-Luc plasmid. Chemerin induced NF-κB activation via the MAPK and PI3K/Akt pathways. Western blot analyses and monocyte-endothelial adhesion assay showed that chemerin increased endothelial cell adhesion molecule expression and secretion, namely E-selectin (Endothelial Selectin), VCAM-1 (Vascular Cell Adhesion Molecule-1) and ICAM-1 (Intracellular Adhesion Molecule-1), leading to enhancement of monocyte-endothelial adhesion. Additionally, we showed a synergistic response of the pro-inflammatory mediator, Interleukin-1β with chemerin induced effects. Chemerin plays an important role in endothelial inflammation, as it induces monocyte-endothelial adhesion, a critical step in the development of atherosclerosis.
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Affiliation(s)
- Georgios K Dimitriadis
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK.,Division of Endocrinology and Experimental Medicine, Imperial College London, Hammersmith Campus, London, UK.,WISDEM Centre, Human Metabolism Research Unit, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Jaspreet Kaur
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK.,Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA, USA
| | - Raghu Adya
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK
| | - Alexander D Miras
- Division of Endocrinology and Experimental Medicine, Imperial College London, Hammersmith Campus, London, UK
| | - Harman S Mattu
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK
| | - John G Hattersley
- WISDEM Centre, Human Metabolism Research Unit, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Gregory Kaltsas
- WISDEM Centre, Human Metabolism Research Unit, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - Bee K Tan
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK.,Department of Obstetrics and Gynaecology, Birmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UK
| | - Harpal S Randeva
- Division of Translational and Experimental Medicine, Warwick Medical School, University of Warwick, Coventry, UK.,WISDEM Centre, Human Metabolism Research Unit, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.,Division of Life and Health Sciences, Aston University, Birmingham, UK
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17
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Abstract
Nicotinamide adenine dinucleotide (NAD), the cell's hydrogen carrier for redox enzymes, is well known for its role in redox reactions. More recently, it has emerged as a signaling molecule. By modulating NAD+-sensing enzymes, NAD+ controls hundreds of key processes from energy metabolism to cell survival, rising and falling depending on food intake, exercise, and the time of day. NAD+ levels steadily decline with age, resulting in altered metabolism and increased disease susceptibility. Restoration of NAD+ levels in old or diseased animals can promote health and extend lifespan, prompting a search for safe and efficacious NAD-boosting molecules that hold the promise of increasing the body's resilience, not just to one disease, but to many, thereby extending healthy human lifespan.
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Affiliation(s)
- Luis Rajman
- Paul F. Glenn Center for the Biological Mechanisms of Aging, Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Karolina Chwalek
- Paul F. Glenn Center for the Biological Mechanisms of Aging, Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - David A Sinclair
- Paul F. Glenn Center for the Biological Mechanisms of Aging, Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Laboratory for Ageing Research, Department of Pharmacology, School of Medical Sciences, The University of New South Wales, Sydney, NSW 2052, Australia.
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18
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Yoshino J, Baur JA, Imai SI. NAD + Intermediates: The Biology and Therapeutic Potential of NMN and NR. Cell Metab 2018; 27:513-528. [PMID: 29249689 PMCID: PMC5842119 DOI: 10.1016/j.cmet.2017.11.002] [Citation(s) in RCA: 566] [Impact Index Per Article: 94.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/10/2017] [Accepted: 11/09/2017] [Indexed: 12/12/2022]
Abstract
Research on the biology of NAD+ has been gaining momentum, providing many critical insights into the pathogenesis of age-associated functional decline and diseases. In particular, two key NAD+ intermediates, nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN), have been extensively studied over the past several years. Supplementing these NAD+ intermediates has shown preventive and therapeutic effects, ameliorating age-associated pathophysiologies and disease conditions. Although the pharmacokinetics and metabolic fates of NMN and NR are still under intensive investigation, these NAD+ intermediates can exhibit distinct behavior, and their fates appear to depend on the tissue distribution and expression levels of NAD+ biosynthetic enzymes, nucleotidases, and presumptive transporters for each. A comprehensive concept that connects NAD+ metabolism to the control of aging and longevity in mammals has been proposed, and the stage is now set to test whether these exciting preclinical results can be translated to improve human health.
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Affiliation(s)
- Jun Yoshino
- Center for Human Nutrition, Division of Geriatrics and Nutritional Science, Department of Medicine, Washington University School of Medicine, Campus Box 8103, 660 South Euclid Avenue, St. Louis, MO 63110, USA.
| | - Joseph A Baur
- Department of Physiology and Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, 12-114 Smilow Center for Translational Research, 3400 Civic Center Boulevard, Building 421, Philadelphia, PA 19104-5160, USA.
| | - Shin-Ichiro Imai
- Department of Developmental Biology, Department of Medicine (Joint), Washington University School of Medicine, Campus Box 8103, 660 South Euclid Avenue, St. Louis, MO 63110, USA; Japan Agency for Medical Research and Development, Project for Elucidating and Controlling Mechanisms of Aging and Longevity, Tokyo, Japan.
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19
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Celichowski P, Jopek K, Milecka P, Szyszka M, Tyczewska M, Malendowicz LK, Ruciński M. Nicotinamide phosphoribosyltransferase and the hypothalamic-pituitary-adrenal axis of the rat. Mol Med Rep 2018; 17:6163-6173. [PMID: 29436637 DOI: 10.3892/mmr.2018.8569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 11/13/2017] [Indexed: 11/06/2022] Open
Abstract
Nicotinamide phosphoribosyltransferase (Nampt), also termed visfatin, catalyses the rate‑limiting step in the nicotinamide adenine dinucleotide (NAD) salvage pathway. In addition to its intracellular function (iNampt), extracellular Nampt (eNampt) also affects numerous intracellular signalling pathways. The current study investigated the role of Nampt in the regulation of the hypothalamic‑pituitary‑adrenal (HPA) axis in rats. At 1 h after intraperitoneal administration of eNampt (4 µg/100 g) in adult male rats, serum adrenocorticotropic hormone(ACTH) and aldosterone levels remained unchanged, while corticosterone levels were notably elevated compared with the control group, as determined by ELISA. The results of reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) demonstrated that, in the hypothalami of eNampt‑treated rats, the mRNA expression levels of Fos proto‑oncogene, which is also termed c‑Fos, were not significantly different compared with the control group; however, the mRNA expression levels of proopiomelanocortin (POMC) were markedly increased in the pituitary gland of eNampt‑treated rats compared with the control group. Furthermore, in hypothalamic explants, ELISA results demonstrated that the addition of the eNampt protein exhibited no effect on corticotropin‑releasing hormone (CRH) release into the incubation medium and prevented potassium ion‑induced CRH release. Additionally, the eNampt‑induced increase in ACTH output by pituitary gland explants was not statistically significant, compared with the control group. However, RT‑qPCR indicated that exposure of pituitary gland explants to eNampt and CRH increased the levels of POMC mRNA expression; the effect of eNampt, but not CRH, was inhibited by FK866, which is a specific Nampt inhibitor. In primary rat adrenocortical cell cultures, eNampt exhibited no effect on basal aldosterone or corticosterone secretion, while increases in aldosterone and corticosterone levels in response to ACTH were retained. To assess the potential role of iNampt in the regulation of adrenal steroidogenesis, experiments involving a specific Nampt inhibitor, FK866, were performed. Exposure of cultured cells to FK866 notably lowered basal aldosterone and corticosterone output compared with the control group, and completely eliminated the response of cultured cells to ACTH. The results of the present study indicated that the injected eNampt may have increased the corticosterone serum levels by acting at the pituitary level. In addition, iNampt may exert a tonic stimulating effect on the secretion of aldosterone and corticosterone from rat adrenocortical cells, as normal iNampt levels were required to retain the response of cultured rat adrenocortical cells to ACTH. Thus, these data suggest an important physiological role of both iNampt and eNampt in the regulation of the HPA axis activity in the rat.
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Affiliation(s)
- Piotr Celichowski
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Karol Jopek
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Paulina Milecka
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Marta Szyszka
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Marianna Tyczewska
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Ludwik K Malendowicz
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
| | - Marcin Ruciński
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60‑781 Poznań, Poland
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20
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Visfatin Triggers Anorexia and Body Weight Loss through Regulating the Inflammatory Response in the Hypothalamic Microglia. Mediators Inflamm 2017; 2017:1958947. [PMID: 29362519 PMCID: PMC5738586 DOI: 10.1155/2017/1958947] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/27/2017] [Accepted: 11/02/2017] [Indexed: 11/18/2022] Open
Abstract
Visfatin is an adipokine that is secreted from adipose tissue, and it is involved in a variety of physiological processes. In particular, visfatin has been implicated in metabolic diseases, such as obesity and type 2 diabetes, which are directly linked to systemic inflammation. However, the potential impacts of visfatin on the hypothalamic control of energy homeostasis, which is involved in microglial inflammation, have not fully been investigated. In this study, we found that treatment with exogenous recombinant visfatin protein led to the activation of the inflammatory response in a microglial cell line. In addition, we observed that central administration of visfatin led to the activation of microglia in the hypothalamus. Finally, we found that visfatin reduced food intake and body weight through activating POMC neurons in association with microglia activation in mice. These findings indicate that elevation of central visfatin levels may be associated with homeostatic feeding behavior in response to metabolic shifts, such as increased adiposity following inflammatory processes in the hypothalamus.
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21
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Dutheil F, Gordon BA, Naughton G, Crendal E, Courteix D, Chaplais E, Thivel D, Lac G, Benson AC. Cardiovascular risk of adipokines: a review. J Int Med Res 2017; 46:2082-2095. [PMID: 28974138 PMCID: PMC6023062 DOI: 10.1177/0300060517706578] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Over the last two decades, the understanding of adipose tissue has undergone radical change. The perception has evolved from an inert energy storage tissue to that of an active endocrine organ. Adipose tissue releases a cluster of active molecules named adipokines. The severity of obesity-related diseases does not necessarily correlate with the extent of body fat accumulation but is closely related to body fat distribution, particularly to visceral localization. There is a distinction between the metabolic function of central obesity (visceral abdominal) and peripheral obesity (subcutaneous) in the production of adipokines. Visceral fat accumulation, linked with levels of some adipokines, induces chronic inflammation and metabolic disorders, including glucose intolerance, hyperlipidaemia, and arterial hypertension. Together, these conditions contribute to a diagnosis of metabolic syndrome, directly associated with the onset of cardiovascular disease. If it is well known that adipokines contribute to the inflammatory profile and appetite regulation, this review is novel in synthesising the current state of knowledge of the role of visceral adipose tissue and its secretion of adipokines in cardiovascular risk.
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Affiliation(s)
- Frédéric Dutheil
- 1 University Hospital of Clermont-Ferrand (CHU), Preventive and Occupational Medicine, Clermont-Ferrand, France.,2 Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France.,3 Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia.,4 WittyFit, Paris, France
| | - Brett Ashley Gordon
- 5 La Trobe University, La Trobe Rural Health School, Exercise Physiology, Bendigo, Victoria, Australia
| | - Geraldine Naughton
- 3 Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
| | - Edward Crendal
- 3 Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
| | - Daniel Courteix
- 3 Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia.,6 Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, France
| | - Elodie Chaplais
- 3 Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia.,6 Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, France
| | - David Thivel
- 6 Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, France
| | - Gérard Lac
- 6 Université Clermont Auvergne, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques (AME2P), Clermont-Ferrand, France
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23
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Bai B, Ban B, Liu Z, Zhang MM, Tan BK, Chen J. Circulating C1q complement/TNF-related protein (CTRP) 1, CTRP9, CTRP12 and CTRP13 concentrations in Type 2 diabetes mellitus: In vivo regulation by glucose. PLoS One 2017; 12:e0172271. [PMID: 28207876 PMCID: PMC5313218 DOI: 10.1371/journal.pone.0172271] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 01/18/2017] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES The C1q complement/TNF-related protein (CTRP) superfamily, which includes the adipokine adiponectin, has been shown in animal models to have positive metabolic and cardiovascular effects. We sought to investigate circulating CTRP1, CTRP9, CTRP12 and CTRP13 concentrations in persons with type 2 diabetes mellitus (T2DM), with age and BMI matched controls, and to examine the effects of a 2 hour 75g oral glucose tolerance test (OGTT) on serum CTRP1, CTRP9, CTRP12 and CTRP13 levels in persons with T2DM. DESIGN Cross-sectional study [newly diagnosed T2DM (n = 124) and control (n = 139) participants]. Serum CTRP1, CTRP9, CTRP12 and CTRP13 were measured by ELISA. RESULTS Systolic and diastolic blood pressure, total cholesterol (TCH), Low-density lipoprotein (LDL)-cholesterol, triglycerides, TCH/High-density lipoprotein (HDL) ratio, triglycerides/HDL ratio, glucose, insulin, homeostatic model assessment-insulin resistance (HOMA-IR), C-reactive protein and endothelial lipase were significantly higher, whereas leptin and adiponectin were significantly lower in T2DM participants. Serum CTRP1 were significantly higher and CTRP12 significantly lower in T2DM participants. Age, diastolic blood pressure, glucose and CTRP12 were predictive of serum CTRP1; leptin was predictive of serum CTRP9; glucose and CTRP1 were predictive of serum CTRP12; endothelial lipase was predictive of serum CTRP13. Finally, serum CTRP1 were significantly higher and CTRP12 significantly lower in T2DM participants after a 2 hour 75g OGTT. CONCLUSIONS Our data supports CTRP1 and CTRP12 as potential novel biomarkers for the prediction and early diagnosis of T2DM. Furthermore, pharmacological agents that target CTRP1 and CTRP12 could represent a new strategy in the treatment of T2DM.
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Affiliation(s)
- Bo Bai
- Neurobiology Institute, Jining Medical University, Jinin, China
| | - Bo Ban
- Department of Endocrine and Metabolic diseases, Jining Medical College Affiliated Hospital, Jining Medical University, Jining, China
| | - Zunjing Liu
- Department of Neurology, China-Japan Friendship Hospital, Beijing, China
| | - Man Man Zhang
- Department of Endocrine and Metabolic diseases, Jining Medical College Affiliated Hospital, Jining Medical University, Jining, China
| | - Bee Kang Tan
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
- Department of Obstetrics and Gynaecology, Birmingham Heartlands and Solihull Hospitals, Heart of England NHS Foundation Trust, Birmingham, United Kingdom
- * E-mail: (BKT); (JC)
| | - Jing Chen
- Neurobiology Institute, Jining Medical University, Jinin, China
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
- * E-mail: (BKT); (JC)
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Kleinridders A. Deciphering Brain Insulin Receptor and Insulin-Like Growth Factor 1 Receptor Signalling. J Neuroendocrinol 2016; 28:10.1111/jne.12433. [PMID: 27631195 PMCID: PMC5129466 DOI: 10.1111/jne.12433] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 09/12/2016] [Accepted: 09/12/2016] [Indexed: 12/16/2022]
Abstract
Insulin receptor (IR) and insulin-like growth factor 1 receptor (IGF1R) are highly conserved receptor tyrosine kinases that share signalling proteins and are ubiquitously expressed in the brain. Central application of insulin or IGF1 exerts several similar physiological outcomes, varying in strength, whereas disruption of the corresponding receptors in the brain leads to remarkably different effects on brain size and physiology, thus highlighting the unique effects of the corresponding hormone receptors. Central insulin/IGF1 resistance impacts upon various levels of the IR/IGF1R signalling pathways and is a feature of the metabolic syndrome and neurodegenerative diseases such as Alzheimer's disease. The intricacy of brain insulin and IGF1 signalling represents a challenge for the identification of specific IR and IGF1R signalling differences in pathophysiological conditions. The present perspective sheds light on signalling differences and methodologies for specifically deciphering brain IR and IGF1R signalling.
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Affiliation(s)
- A. Kleinridders
- German Institute of Human Nutrition Potsdam‐RehbrueckeCentral Regulation of MetabolismNuthetalGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
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Wang P, Miao CY. NAMPT as a Therapeutic Target against Stroke. Trends Pharmacol Sci 2015; 36:891-905. [DOI: 10.1016/j.tips.2015.08.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/20/2015] [Accepted: 08/20/2015] [Indexed: 12/20/2022]
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Garten A, Schuster S, Penke M, Gorski T, de Giorgis T, Kiess W. Physiological and pathophysiological roles of NAMPT and NAD metabolism. Nat Rev Endocrinol 2015. [PMID: 26215259 DOI: 10.1038/nrendo.2015.117] [Citation(s) in RCA: 418] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) is a regulator of the intracellular nicotinamide adenine dinucleotide (NAD) pool. NAD is an essential coenzyme involved in cellular redox reactions and is a substrate for NAD-dependent enzymes. In various metabolic disorders and during ageing, levels of NAD are decreased. Through its NAD-biosynthetic activity, NAMPT influences the activity of NAD-dependent enzymes, thereby regulating cellular metabolism. In addition to its enzymatic function, extracellular NAMPT (eNAMPT) has cytokine-like activity. Abnormal levels of eNAMPT are associated with various metabolic disorders. NAMPT is able to modulate processes involved in the pathogenesis of obesity and related disorders such as nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) by influencing the oxidative stress response, apoptosis, lipid and glucose metabolism, inflammation and insulin resistance. NAMPT also has a crucial role in cancer cell metabolism, is often overexpressed in tumour tissues and is an experimental target for antitumour therapies. In this Review, we discuss current understanding of the functions of NAMPT and highlight progress made in identifying the physiological role of NAMPT and its relevance in various human diseases and conditions, such as obesity, NAFLD, T2DM, cancer and ageing.
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Affiliation(s)
- Antje Garten
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
| | - Susanne Schuster
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
| | - Melanie Penke
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
| | - Theresa Gorski
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
| | - Tommaso de Giorgis
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
| | - Wieland Kiess
- Center for Pediatric Research Leipzig, Hospital for Children and Adolescents, University of Leipzig, Liebigstrasse 21, 04103 Leipzig, Germany
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Lee JO, Kim N, Lee HJ, Lee YW, Kim JK, Kim HI, Lee SK, Kim SJ, Park SH, Kim HS. Visfatin, a novel adipokine, stimulates glucose uptake through the Ca2 +-dependent AMPK-p38 MAPK pathway in C2C12 skeletal muscle cells. J Mol Endocrinol 2015; 54:251-62. [PMID: 26019302 DOI: 10.1530/jme-14-0274] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Visfatin is a novel adipocytokine produced by visceral fat. In the present study, visfatin increased AMP-activated protein kinase (AMPK) phosphorylation in mouse C2C12 skeletal muscle cells. It also increased phosphorylation of the insulin receptor, whose knockdown blocked visfatin-induced AMPK phosphorylation and glucose uptake. Visfatin stimulated glucose uptake in differentiated skeletal muscle cells. However, inhibition of AMPKα2 with an inhibitor or with knockdown of AMPKα2 using siRNA blocked visfatin-induced glucose uptake, which indicates that visfatin stimulates glucose uptake through the AMPKα2 pathway. Visfatin increased the intracellular Ca(2) (+) concentration. STO-609, a calmodulin-dependent protein kinase kinase inhibitor, blocked visfatin-induced AMPK phosphorylation and glucose uptake. Visfatin-mediated activation of p38 MAPK was AMPKα2-dependent. Furthermore, both inhibition and knockdown of p38 MAPK blocked visfatin-induced glucose uptake. Visfatin increased glucose transporter type 4 (GLUT4) mRNA and protein levels. In addition, visfatin stimulated the translocation of GLUT4 to the plasma membrane, and this effect was suppressed by AMPKα2 inhibition. The present results indicate that visfatin plays an important role in glucose metabolism via the Ca(2) (+)-mediated AMPK-p38 MAPK pathway.
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Affiliation(s)
- Jung Ok Lee
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Nami Kim
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Hye Jeong Lee
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Yong Woo Lee
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Joong Kwan Kim
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Hyung Ip Kim
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Soo Kyung Lee
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Su Jin Kim
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Sun Hwa Park
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
| | - Hyeon Soo Kim
- Department of Anatomy Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, Seoul, Korea
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Ban B, Bai B, Zhang M, Hu J, Ramanjaneya M, Tan BK, Chen J. Low serum cartonectin/CTRP3 concentrations in newly diagnosed type 2 diabetes mellitus: in vivo regulation of cartonectin by glucose. PLoS One 2014; 9:e112931. [PMID: 25409499 PMCID: PMC4237345 DOI: 10.1371/journal.pone.0112931] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 10/16/2014] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES Cartonectin is a novel adipokine of the C1q complement/TNF-related protein (CTRP) superfamily, with glucose lowering effects, anti-inflammatory and cardio-protective properties. We sought to investigate circulating cartonectin concentrations in subjects with type 2 diabetes mellitus (T2DM) as well as age and BMI matched control subjects. We also examined the effects of a 2 hour 75 g oral glucose tolerance test (OGTT) on serum cartonectin concentrations in T2DM subjects. DESIGN Cross-sectional study [newly diagnosed (first discovery, not on any treatments) T2DM (n = 47) and control (n = 63) subjects]. Serum cartonectin was measured by ELISA. RESULTS Serum cartonectin concentrations were significantly lower in patients with T2DM compared to controls (P<0.05). Furthermore, serum cartonectin was significantly negatively correlated with glucose and CRP, and significantly positively correlated with leptin, in all subjects (n = 110). When subjected to multiple regression analysis, none of these variables were predictive of serum cartonectin (P>0.05). There were no significant correlations in T2DM subjects (n = 47). In control subjects (n = 63), serum cartonectin was significantly negatively correlated with CRP, and significantly positively correlated with insulin, HOMA-IR and leptin. However, when subjected to multiple regression analysis, none of these variables were predictive of serum cartonectin (P>0.05). Finally, serum cartonectin concentrations were significantly lower in T2DM subjects after a 2 hour 75 g OGTT (P<0.01). CONCLUSIONS Cartonectin may serve as a novel biomarker for the prediction and early diagnosis of T2DM patients. Furthermore, cartonectin and/or pharmacological agents that increase circulating cartonectin levels can represent a new therapeutic field in the treatment of T2DM patients. Further research is needed to clarify these points.
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Affiliation(s)
- Bo Ban
- Department of Endocrine and Metabolic Diseases, Jining Medical College Affiliated Hospital, Jining Medical University, Jining, Shandong, P.R. of China
| | - Bo Bai
- Neurobiology Institute, Jining Medical University, Jining, Shandong, P.R. of China
| | - Manman Zhang
- Department of Endocrine and Metabolic Diseases, Jining Medical College Affiliated Hospital, Jining Medical University, Jining, Shandong, P.R. of China
- School of Medicine, Shandong University, Jinan, Shandong, P.R. of China
| | - Jiamiao Hu
- Warwick Medical School, University of Warwick, Coventry, West Midlands, United Kingdom
| | - Manjunath Ramanjaneya
- Warwick Medical School, University of Warwick, Coventry, West Midlands, United Kingdom
| | - Bee K. Tan
- Warwick Medical School, University of Warwick, Coventry, West Midlands, United Kingdom
- Department of Obstetrics and Gynaecology, Birmingham Heartlands and Solihull Hospitals, Heart of England NHS Foundation Trust, Birmingham, West Midlands, United Kingdom
- * E-mail: (BKT); (JC)
| | - Jing Chen
- Neurobiology Institute, Jining Medical University, Jining, Shandong, P.R. of China
- Warwick Medical School, University of Warwick, Coventry, West Midlands, United Kingdom
- * E-mail: (BKT); (JC)
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Visfatin concentrations in children with leukemia before and after stem cell transplantation. Exp Hematol 2014; 42:252-60. [DOI: 10.1016/j.exphem.2013.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 11/16/2013] [Accepted: 12/16/2013] [Indexed: 11/23/2022]
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Elias-Miró M, Mendes-Braz M, Cereijo R, Villarroya F, Jiménez-Castro MB, Gracia-Sancho J, Guixé-Muntet S, Massip-Salcedo M, Domingo JC, Bermudo R, Rodés J, Peralta C. Resistin and visfatin in steatotic and non-steatotic livers in the setting of partial hepatectomy under ischemia-reperfusion. J Hepatol 2014; 60:87-95. [PMID: 23968888 DOI: 10.1016/j.jhep.2013.07.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/28/2013] [Accepted: 07/18/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND & AIMS This study examined whether the regulation of resistin and visfatin could reduce damage and improve regeneration in both steatotic and non-steatotic livers undergoing partial hepatectomy under ischemia-reperfusion, a procedure commonly applied in clinical practice to reduce bleeding. METHODS Resistin and visfatin were pharmacologically modulated in lean and obese animals undergoing partial hepatectomy under ischemia-reperfusion. RESULTS No evident role for these adipocytokines was observed in non-steatotic livers. However, obese animals undergoing liver surgery showed increased resistin in liver and plasma, without changes in adipose tissue, together with visfatin downregulation in liver and increment in plasma and adipose tissue. Endogenous resistin maintains low levels of visfatin in the liver by blocking its hepatic uptake from the circulation, thus regulating the visfatin detrimental effects on hepatic damage and regenerative failure. Indeed, the administration of anti-resistin antibodies increased hepatic accumulation of adipocyte-derived visfatin, exacerbating damage and regenerative failure. Interestingly, treatment with anti-visfatin antibodies protected steatotic livers, and similar results were obtained with the concomitant inhibition of resistin and visfatin. Thus, when visfatin was inhibited, the injurious effects of anti-resistin antibodies disappeared. Herein we show that upregulation of visfatin increased NAD levels in the remnant steatotic liver, whereas visfatin inhibition decreased them. These later observations suggest that visfatin may favour synthesis of NAD instead of DNA and induces alterations in amino acid metabolism-urea cycle and NO production, overall negatively affecting liver viability. CONCLUSIONS Our results indicate the clinical potential of visfatin blocking-based therapies in steatotic livers undergoing partial hepatectomy with ischemia-reperfusion.
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Affiliation(s)
- Maria Elias-Miró
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Mariana Mendes-Braz
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain; Department of Pathology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Brazil
| | - Ruben Cereijo
- Departament de Bioquímica i Biología Molecular, i Institut de Biomedicina, Universitat de Barcelona, CIBER Fisopatologia de la Obesidad y Nutrición, Spain
| | - Francesc Villarroya
- Departament de Bioquímica i Biología Molecular, i Institut de Biomedicina, Universitat de Barcelona, CIBER Fisopatologia de la Obesidad y Nutrición, Spain
| | - Mónica B Jiménez-Castro
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Jordi Gracia-Sancho
- Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS, CIBEREHD, Barcelona, Spain
| | - Sergi Guixé-Muntet
- Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS, CIBEREHD, Barcelona, Spain
| | - Marta Massip-Salcedo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain
| | - Joan Carles Domingo
- Department of Biochemistry and Molecular Biology, University of Barcelona, Spain
| | | | - Juan Rodés
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain; Liver Unit, Hospital Clínic, Barcelona, Spain
| | - Carmen Peralta
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Barcelona, Spain.
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Kim DS, Kang S, Moon NR, Park S. Central visfatin potentiates glucose-stimulated insulin secretion and β-cell mass without increasing serum visfatin levels in diabetic rats. Cytokine 2013; 65:159-66. [PMID: 24332931 DOI: 10.1016/j.cyto.2013.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 11/06/2013] [Accepted: 11/13/2013] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Our previous study revealed that plasma visfatin levels were lower in pregnant women with gestational diabetes (GDM) than non-GDM independent of prepreganacy BMI. We examined whether central visfatin modulates energy and glucose homeostasis via altering insulin resistance, insulin secretion or islet morphometry in diabetic rats. METHODS Partial pancreatectomized, type 2 diabetic, rats were interacerbroventricularly infused with visfatin (100ng/rat/day, Px-VIS), visfatin+visfatin antagonist, CHS-828 (100μg/rat/day, Px-VIS-ANT), or saline (control, Px-Saline) via osmotic pump, respectively, for 4weeks. RESULTS Central visfatin improved insulin signaling (pAkt→pFOXO-1) but not pSTAT3 in the hypothalamus. Central visfatin did not alter serum visfatin levels in diabetic rats whereas the levels were higher in non-diabetic rats than diabetic rats. Body weight at the 2nd week was lowered in the Px-VIS group due to decreased food intake in the first two weeks compared to the Px-Saline group and energy expenditure was not significantly different among the treatment groups of diabetic rats. Visfatin antagonist treatment nullified the central visfatin effect. Px-VIS increased whole body glucose disposal rates in euglycemic hyperinsulinemic clamp compared to Px-Saline and lowered hepatic glucose output, whereas Px-VIS-ANT blocked the visfatin effect on insulin resistance (P<0.05). In hyperglycemic clamp study, the area under the curve of insulin in first and second phase were significantly higher in the Px-VIS group than the Px-Saline group without modifying insulin sensitivity at the hyperglycemic state, whereas the increase in serum insulin levels was blocked in the Px-VIS-ANT group. Central visfatin also increased β-cell mass by increasing β-cell proliferation. CONCLUSIONS Central visfatin improved glucose homeostasis by increasing insulin secretion and insulin sensitivity at euglycemia through the hypothalamus in diabetic rats. Therefore, visfatin is a positive modulator of glucose homeostasis by delivering the hypothalamic signals into the peripheries.
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Affiliation(s)
- Da Sol Kim
- Food & Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, Republic of Korea
| | - Suna Kang
- Food & Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, Republic of Korea
| | - Na Rang Moon
- Food & Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, Republic of Korea
| | - Sunmin Park
- Food & Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, Republic of Korea.
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Sun Z, Lei H, Zhang Z. Pre-B cell colony enhancing factor (PBEF), a cytokine with multiple physiological functions. Cytokine Growth Factor Rev 2013; 24:433-42. [PMID: 23787158 DOI: 10.1016/j.cytogfr.2013.05.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 05/12/2013] [Accepted: 05/21/2013] [Indexed: 02/07/2023]
Abstract
Pre-B cell colony enhancing factor (PBEF) is regarded as a proinflammatory cytokine. Named for its first discovered function as a pre-B cell colony enhancing factor, it has since been found to have many other functions relating to cell metabolism, inflammation, and immune modulation. It has also been found to have intracellular and extracellular forms, with the two overlapping in function. Most of the intracellular functions of PBEF are due to its role as a nicotinamide phosphoribosyltransferase (Nampt). It has been found in human endothelial cells, where it is able to induce angiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. In human umbilical endothelial cells, PBEF increases levels of the protease MMP 2/9. PBEF has also been found in a variety of immune cells other than B cells and has been shown to inhibit apoptosis of macrophages. Extracellular PBEF has been shown to increase inflammatory cytokines, such as TNF-α, IL-1β, IL-16, and TGF-β1, and the chemokine receptor CCR3. PBEF also increases the production of IL-6, TNF-α, and IL-1β in CD14(+) monocyctes, macrophages, and dendritic cells, enhances the effectiveness of T cells, and is vital to the development of both B and T lymphocytes. The purpose of this review is to summarize the recent advances in PBEF research.
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Affiliation(s)
- Zhongjie Sun
- Department of Physiology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Cardiology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China.
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Carrero JJ, Stenvinkel P, Cuppari L, Ikizler TA, Kalantar-Zadeh K, Kaysen G, Mitch WE, Price SR, Wanner C, Wang AY, ter Wee P, Franch HA. Etiology of the Protein-Energy Wasting Syndrome in Chronic Kidney Disease: A Consensus Statement From the International Society of Renal Nutrition and Metabolism (ISRNM). J Ren Nutr 2013; 23:77-90. [DOI: 10.1053/j.jrn.2013.01.001] [Citation(s) in RCA: 458] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 01/15/2013] [Indexed: 01/17/2023] Open
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Abstract
The highly coordinated output of the hypothalamic biological clock does not only govern the daily rhythm in sleep/wake (or feeding/fasting) behaviour but also has direct control over many aspects of hormone release. In fact, a significant proportion of our current understanding of the circadian clock has its roots in the study of the intimate connections between the hypothalamic clock and multiple endocrine axes. This chapter will focus on the anatomical connections used by the mammalian biological clock to enforce its endogenous rhythmicity on the rest of the body, using a number of different hormone systems as a representative example. Experimental studies have revealed a highly specialised organisation of the connections between the mammalian circadian clock neurons and neuroendocrine as well as pre-autonomic neurons in the hypothalamus. These complex connections ensure a logical coordination between behavioural, endocrine and metabolic functions that will help the organism adjust to the time of day most efficiently. For example, activation of the orexin system by the hypothalamic biological clock at the start of the active phase not only ensures that we wake up on time but also that our glucose metabolism and cardiovascular system are prepared for this increased activity. Nevertheless, it is very likely that the circadian clock present within the endocrine glands plays a significant role as well, for instance, by altering these glands' sensitivity to specific stimuli throughout the day. In this way the net result of the activity of the hypothalamic and peripheral clocks ensures an optimal endocrine adaptation of the metabolism of the organism to its time-structured environment.
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Affiliation(s)
- Andries Kalsbeek
- Department of Endocrinology and Metabolism, G2-133, Academic Medical Center of the University of Amsterdam, The Netherlands.
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PBEF/NAMPT/visfatin: a promising drug target for treating rheumatoid arthritis? Future Med Chem 2012; 4:751-69. [PMID: 22530639 DOI: 10.4155/fmc.12.34] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
NAMPT, also known as pre-B-cell colony-enhancing factor and visfatin, has been proposed to be involved in preventing apoptosis in cancer cells and, as such, has received a great deal of attention in recent years and stimulated the development to specific inhibitors for treating cancer. The role of NAMPT inhibitors as potential therapeutic agents for other diseases has not been studied extensively. Here, we describe their applicability for treating rheumatoid arthritis. We summarize current knowledge of NAMPT expression in healthy and diseased tissues, thereafter, we focus on pathological mechanisms relevant to rheumatoid arthritis that involve the NAMPT pathway and review the current status of NAMPT inhibitors being evaluated in clinical trials.
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Abstract
Nicotinamide phosphoribosyltransferase is the rate-limiting enzyme that catalyzes the first step in the biosynthesis of nicotinamide adenine dinucleotide from nicotinamide. This protein was originally cloned as a putative pre-B cell colony-enhancing factor and also found to be a visceral fat-derived adipokine (visfatin). As a multifunctional protein, visfatin plays an important role in immunity, metabolism, aging, inflammation, and responses to stress. Visfatin also participates in several pathophysiological processes contributing to cardio-cerebro-vascular diseases, including hypertension, atherosclerosis, ischemic heart disease, and ischemic stroke. However, whether visfatin is a friend or a foe in these diseases remains uncertain. This brief review focuses on the current understanding of the complex role of visfatin in the cardio-cerebro-vascular system under normal and pathophysiological conditions.
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Affiliation(s)
- Pei Wang
- Department of Pharmacology, Second Military Medical University, Shanghai, China
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Chang YH, Chang DM, Lin KC, Shin SJ, Lee YJ. Visfatin in overweight/obesity, type 2 diabetes mellitus, insulin resistance, metabolic syndrome and cardiovascular diseases: a meta-analysis and systemic review. Diabetes Metab Res Rev 2011; 27:515-27. [PMID: 21484978 DOI: 10.1002/dmrr.1201] [Citation(s) in RCA: 227] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
There are controversies regarding the association of visfatin with overweight/obesity, type 2 diabetes mellitus, insulin resistance (IR), metabolic syndrome and cardiovascular disease in published articles. A meta-analysis was performed to identify the significance of visfatin in these diseases. We searched for relevant articles in Pubmed, Scopus and SCIE. A total of 1035 articles were surveyed and 46 articles were identified, with 14 reports reporting more than one of our investigated diseases. A total of 13 (n = 644), 19 (n = 2405), 20 (n = 2249), 5 (n = 527) and 5 (n = 851) articles/(participants) were included in each meta-analysis regarding the association of visfatin and overweight/obesity, type 2 diabetes mellitus, insulin resistance, metabolic syndrome and cardiovascular diseases, respectively. Plasma visfatin concentrations were increased in participants diagnosed with overweight/obesity, type 2 diabetes mellitus, metabolic syndrome and cardiovascular diseases, with pooled log odds ratios of 1.164 [95% confidence interval (CI): 0.348 to 1.981, p = 0.005], 1.981 (95% CI: 1.377 to 2.584, p < 0.001), 1.094 (95% CI: 0.678 to 1.511, p < 0.001), and 2.902 (95% CI: 0.924 to 4.879, p < 0.005), respectively. The circulating visfatin level was positively associated with insulin resistance, with a Fisher's z of 0.089 (95% CI: 0.013 to 0.165, p = 0.022). No single study was found to affect the overall result of each analysis by sensitivity testing. No publication bias was found by the Egger test. Our study suggests that the use of visfatin may be promising for predicting obesity, diabetes status, insulin resistance, metabolic syndrome and cardiovascular disease.
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Affiliation(s)
- Yu-Hung Chang
- Department of Internal Medicine, Lee's Endocrinology Clinic, Pingtung, Taiwan
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Evans L, Williams AS, Hayes AJ, Jones SA, Nowell M. Suppression of leukocyte infiltration and cartilage degradation by selective inhibition of pre-B cell colony-enhancing factor/visfatin/nicotinamide phosphoribosyltransferase: Apo866-mediated therapy in human fibroblasts and murine collagen-induced arthrit. ACTA ACUST UNITED AC 2011; 63:1866-77. [DOI: 10.1002/art.30338] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Carrero JJ. Mechanisms of Altered Regulation of Food Intake in Chronic Kidney Disease. J Ren Nutr 2011; 21:7-11. [DOI: 10.1053/j.jrn.2010.10.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Abstract
The initial discovery of leptin, an appetite-suppressing hormone originating from fat tissue, substantially supported the idea that fat-borne factors act on the brain to regulate food intake and energy expenditure. Since then, a growing number of cytokines have been found to be released from adipose tissue, thus acting in an endocrine manner. These adipocytokines include not only, e.g., adiponectin, apelin, resistin, and visfatin, but also inflammatory cytokines and steroid hormones such as estrogens and glucocorticoids. They are secreted from their adipose depots and differ in terms of release stimuli, downstream signaling, and their action on the brain. Clearly, adipocytokines play a prominent role in the central control of body weight, and the deregulation of this circuit may lead to the development of obesity and related disorders. In this chapter, we will focus on crosstalk mechanisms and the deregulation of adipocytokines at the expression level and/or sites of central action that eventually will lead to the development and perpetuation of obesity and diabetes.
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Affiliation(s)
- Carla Schulz
- Department of Internal Medicine I, Luebeck University, Ratzeburger Allee 160, 23538 Luebeck, Germany
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Zhang LQ, Heruth DP, Ye SQ. Nicotinamide Phosphoribosyltransferase in Human Diseases. ACTA ACUST UNITED AC 2011; 3:13-25. [PMID: 22140607 DOI: 10.4172/1948-593x.1000038] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Nicotinamide phosphoribosyltransferase (NAMPT) was first reported as a pre-B-cell colony enhancing factor in 1994 with little notice, but it has received increasing attention in recent years due to accumulating evidence indicating that NAMPT is a pleiotropic protein such as a growth factor, a cytokine, an enzyme and a visfatin. Now, NAMPT has been accepted as an official name of this protein. Because of NAMPT's multiple functions in a variety of physiological processes, their dysregulations have been implicated in the pathogenesis of a number of human diseases or conditions such as acute lung injury, aging, atherosclerosis, cancer, diabetes, rheumatoid arthritis and sepsis. This review will cover the current understanding of NAMPT's structure and functions with an emphasis on recent progress of nicotinamide phosphoribosyltransferase's pathological roles in various human diseases and conditions. Future directions on exploring its Terra incognita will be offered in the end.
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Affiliation(s)
- Li Qin Zhang
- Department of Pediatrics, Children's Mercy Hospitals and Clinics, University of Missouri School of Medicine, Kansas City, MO 64108, USA
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Garten A, Petzold S, Schuster S, Körner A, Kratzsch J, Kiess W. Nampt and its potential role in inflammation and type 2 diabetes. Handb Exp Pharmacol 2011:147-164. [PMID: 21484571 DOI: 10.1007/978-3-642-17214-4_7] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nicotinamide phosphoribosyltransferase Nicotinamide phosphoribosyltransferase (Nampt Nampt ) is a key nicotinamide adenine dinucleotide (NAD) NAD biosynthetic enzyme in mammals, converting nicotinamide nicotinamide into nicotinamide mononucleotide nicotinamide mononucleotide (NMN NMN ), an NAD intermediate. First identified in humans as a cytokine cytokine pre-B-cell colony enhancing factor pre-B cell colony enhancing factor (PBEF PBEF ) and subsequently described as an insulin-mimetic hormone visfatin visfatin , Nampt has recently excited the scientific interest of researchers from diverse fields, including NAD biology, metabolic regulation, and inflammation. As an NAD biosynthetic enzyme, Nampt regulates the activity of NAD-consuming enzymes such as sirtuins sirtuins and influences a variety of metabolic and stress responses. Nampt plays an important role in the regulation of insulin secretion insulin secretion in pancreatic β-cells. Nampt also functions as an immunomodulatory cytokine cytokine and is involved in the regulation of inflammatory responses. This chapter summarizes the various functional aspects of Nampt and discusses its potential roles in diseases, with special focus on type 2 diabetes mellitus (T2DM).
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Affiliation(s)
- Antje Garten
- University of Leipzig, Hospital for Children and Adolescents, Liebigstr. 20a, 04103, Leipzig, Germany
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Inflammation, a link between obesity and cardiovascular disease. Mediators Inflamm 2010; 2010:535918. [PMID: 20847813 PMCID: PMC2929614 DOI: 10.1155/2010/535918] [Citation(s) in RCA: 247] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 03/10/2010] [Accepted: 06/17/2010] [Indexed: 02/08/2023] Open
Abstract
Obesity, the most common nutritional disorder in industrialized countries, is associated with an increased mortality and morbidity of cardiovascular disease (CVD). Obesity is primarily considered to be a disorder of energy balance, and it has recently been suggested that some forms of obesity are associated with chronic low-grade inflammation. The present paper focuses on the current status of our knowledge regarding chronic inflammation, a link between obesity and CVDs, including heart diseases, vascular disease and atherosclerosis. The paper discusses the methods of body fat evaluation in humans, the endocrinology and distribution of adipose tissue in the genders, the pathophysiology of obesity, the relationship among obesity, inflammation, and CVD, and the adipose tissue-derived cytokines known to affect inflammation. Due to space limitations, this paper focuses on C-reactive protein, serum amyloid A, leptin, adiponectin, resistin, visfatin, chemerin, omentin, vaspin, apelin, and retinol binding protein 4 as adipokines.
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Carrero JJ, Witasp A, Stenvinkel P, Qureshi AR, Heimbürger O, Bárány P, Suliman ME, Anderstam B, Lindholm B, Nordfors L, Schalling M, Axelsson J. Visfatin is increased in chronic kidney disease patients with poor appetite and correlates negatively with fasting serum amino acids and triglyceride levels. Nephrol Dial Transplant 2009; 25:901-6. [PMID: 19948877 DOI: 10.1093/ndt/gfp587] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Anorexia is a common complication of chronic kidney disease (CKD), while novel animal and human data suggest a role for visfatin in regulating feeding behavior. We hypothesized that increased visfatin levels in CKD patients may be involved in the regulation of appetite and nutrient homeostasis. METHODS This is a cross-sectional study where circulating visfatin levels were analysed in 246 incident CKD stage 5 patients starting dialysis therapy. The associations between visfatin (enzyme-linked immunosorbent assay, ELISA) and anthropometric and biochemical nutritional status, self-reported appetite, fasting serum amino acids (high-performance liquid chromatography) and circulating cytokine levels (ELISAs) were assessed. We also performed genotyping (Pyrosequencing(R)) of two polymorphisms (rs1319501 and rs9770242) in the visfatin gene. RESULTS Serum visfatin concentrations were not associated with either body mass index or serum leptin. Across groups with worsening appetite, median visfatin levels were incrementally higher (P < 0.05). With increasing visfatin tertiles, patients proved to be more often anorectic (P < 0.05) and to have incrementally lower serum albumin, cholesterol and triglycerides as well as lower essential and non-essential serum amino acids (P < 0.05 for all). A polymorphism in the visfatin gene was associated with increased circulating visfatin levels and, at the same time, a higher prevalence of poor appetite (P < 0.05 for both). CONCLUSION Our study suggests novel links between visfatin and anorexia in CKD patients. Based on recent studies, we speculate that high visfatin in CKD patients may constitute a counter-regulatory response to central visfatin resistance in uremia. Future studies should examine a putative role of visfatin as a regulator of nutrient homeostasis in uremia.
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Affiliation(s)
- Juan J Carrero
- Divisions of Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden.
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Hallschmid M, Schultes B. Central nervous insulin resistance: a promising target in the treatment of metabolic and cognitive disorders? Diabetologia 2009; 52:2264-9. [PMID: 19705099 DOI: 10.1007/s00125-009-1501-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 07/24/2009] [Indexed: 01/04/2023]
Abstract
Research on functions and signalling pathways of insulin has traditionally focused on peripheral tissues such as muscle, fat and liver, while the brain was commonly believed to be insensitive to the effects of this hormone secreted by pancreatic beta cells. However, since the discovery some 30 years ago that insulin receptors are ubiquitously found in the central nervous system, an ever-growing research effort has conclusively shown that circulating insulin accesses the brain, which itself does not synthesise insulin, and exerts pivotal functions in central nervous networks. As an adiposity signal reflecting the amount of body fat, insulin provides direct negative feedback to hypothalamic nuclei that control whole-body energy and glucose homeostasis. Moreover, insulin affects distinct cognitive processes, e.g. by triggering the formation of psychological memory contents. Accordingly, metabolic and cognitive disorders such as obesity, type 2 diabetes mellitus and Alzheimer's disease are associated with resistance of central nervous structures to the effects of insulin, which may derive from genetic polymorphisms as well as from long-term exposure to excess amounts of circulating insulin due to peripheral insulin resistance. Thus, overcoming central nervous insulin resistance, e.g. by pharmacological interventions, appears to be an attractive strategy in the treatment and prevention of these disorders. Enhancement of central nervous insulin signalling by administration of intranasal insulin, insulin analogues and insulin sensitisers in basic research approaches has yielded encouraging results that bode well for the successful translation of these effects into future clinical practice.
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Affiliation(s)
- M Hallschmid
- Department of Neuroendocrinology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
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