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Kamińska K, Ciołek M, Krysta K, Krzystanek M. Benefits of Treadmill Training for Patients with Down Syndrome: A Systematic Review. Brain Sci 2023; 13:brainsci13050808. [PMID: 37239280 DOI: 10.3390/brainsci13050808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 05/11/2023] [Accepted: 05/13/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND The objective of this study was to evaluate the effectiveness of various results of treadmill training in children and adults with Down syndrome (DS). METHODS To provide an overview of this effectiveness, we conducted a systematic literature review of studies in which participants with DS from all age groups received treadmill training, alone or combined with physiotherapy. We also looked for comparisons with control groups of patients with DS who did not undergo treadmill training. The search was performed in medical databases: PubMed, PEDro, Science Direct, Scopus, and Web of Science, and included trials published until February 2023. Following PRISMA criteria, the risk of bias assessment was conducted using a tool developed by the Cochrane Collaboration for RCT. The selected studies presented multiple outcomes with differences in methodology; therefore, we were not able to conduct any sort of data synthesis, so we present measures of treatment effect as mean differences and corresponding 95% confidence intervals. RESULTS We selected 25 studies for the analysis with a total number of 687 participants, and identified 25 different outcomes which are presented in a narrative manner. In all outcomes we observed positive results favoring the treadmill training. DISCUSSION Introducing treadmill exercise into typical physiotherapy generates improvement in mental and physical health of people with DS.
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Affiliation(s)
- Karolina Kamińska
- Students' Scientific Association, Department and Clinic of Rehabilitation Psychiatry, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Michał Ciołek
- Students' Scientific Association, Department and Clinic of Rehabilitation Psychiatry, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Krzysztof Krysta
- Department and Clinic of Rehabilitation Psychiatry, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
| | - Marek Krzystanek
- Department and Clinic of Rehabilitation Psychiatry, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, 40-055 Katowice, Poland
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Kaur H, Bains V, Sharma T, Badaruddoza. Relationship between leptin gene variants (–2548G>A and 19A>G) and obesity among north Indian Punjabi population. J Genet 2022. [DOI: 10.1007/s12041-022-01401-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ahn SS, Yoon T, Song JJ, Park YB, Lee SW. Serum adipokine profiles in patients with microscopic polyangiitis and granulomatosis with polyangiitis: An exploratory analysis. PLoS One 2021; 16:e0254226. [PMID: 34242326 PMCID: PMC8270208 DOI: 10.1371/journal.pone.0254226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 06/22/2021] [Indexed: 11/23/2022] Open
Abstract
Objectives Previous studies have shown that adipokines may serve as potential biomarkers reflecting disease activity in various autoimmune diseases. Here, we investigated the relationship between four adipokines and clinical/laboratory findings in patients with microscopic polyangiitis (MPA) and granulomatosis with polyangiitis (GPA). Methods Sera from 63 patients with MPA and GPA who were registered in a prospective cohort were used to detect serum levels of adiponectin, chemerin, resistin, and vaspin using commercial enzyme-linked immunosorbent assay kits. Associations between adipokines and clinical and laboratory data was assessed using Pearson’s correlation analysis. Results The median age was 65.0 years, 24 patients were male, and 42 patients were diagnosed with MPA. The median levels of adiponectin, chemerin, resistin, and vaspin in patient sera were 13.9 ng/mL, 9.2 ng/mL, 23.7 ng/mL, and 0.1 ng/mL, respectively. A significant correlation between chemerin level and five-factor score (FFS) was found (r = 0.320, p = 0.011), and resistin was correlated with both Birmingham vasculitis activity score and FFS (r = 0.256, p = 0.043 and r = 0.320, p = 0.011). Regarding laboratory data, adiponectin level was associated with creatinine, and chemerin level was associated with creatinine, albumin, and erythrocyte sedimentation rate (ESR). On the other hand, resistin was found to be associated with white blood cell count, creatinine, ESR, and C-reactive protein. Age did not have a significant impact on the levels of adipokines. Conclusions The expression of adipokines in the sera of patients with MPA and GPA differs depending on clinical and laboratory features, and serum resistin may be suggested as a potential biomarker reflecting disease activity.
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Affiliation(s)
- Sung Soo Ahn
- Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Republic of Korea
| | - Taejun Yoon
- Department of Medical Science, BK21 Plus Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jason Jungsik Song
- Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yong-Beom Park
- Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sang-Won Lee
- Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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Meta-Analysis of the Therapeutic Effect of Shenqi Jiangtang Granule on Type 2 Diabetes Mellitus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:5754823. [PMID: 33062014 PMCID: PMC7542533 DOI: 10.1155/2020/5754823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/01/2020] [Accepted: 07/23/2020] [Indexed: 11/21/2022]
Abstract
Objective To systematically evaluate the effectiveness of Shenqi Jiangtang granule (SQJT) in the treatment of type 2 diabetes. Methods We searched CNKI, Wanfang Data, VIP, and PubMed databases to collect randomized controlled trials (RCT) of Shenqi Jiangtang granules in the treatment of type 2 diabetes. The search time was from January 2014 to the present. Data were extracted, and quality was evaluated. Metadata analysis of the extracted data was carried out using RevMa5.2 software. The final results are expressed in relative risk (RR), mean difference (MD), and 95% CI. Results This study included a total of 13 studies, 1160 subjects. Meta-analysis results showed that the test group was better than the control group (RR = 1.26, 95% CI 1.18–1.34, P < 0.00001). The fasting blood glucose, postprandial blood glucose, and glycated hemoglobin of the test group were also significantly better than those of the control group. Conclusion Shenqi Jiangtang granules have a certain clinical effect and low adverse reaction rate for the treatment or adjuvant treatment of type 2 diabetes. At present, the drug has been widely used in clinical practice, but a large number of large-sample clinical trials are needed to further verify its specific efficacy and safety.
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Effects of Greenshell Mussel (Perna canaliculus) Intake on Pathological Markers of Multiple Phenotypes of Osteoarthritis in Rats. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10176131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The prevalence of metabolic osteoarthritis has been increasing worldwide, particularly among women. The aim of this study was to investigate the effects of the New Zealand greenshell mussel (Perna canaliculus; GSM) on osteoarthritis (OA) prevention in a rat model. One-hundred-and-eight female rats aged 12 weeks were divided into four test groups, containing 24 rats each, plus an additional control group. Each test group received one of the four experimental diets: normal control diet (ND), normal control diet supplemented with GSM (ND + GSM), high fat/high sugar diet (HFHS), or high fat/high sugar diet supplemented GSM (HFHS + GSM), for 36 weeks (end of the study). After 8 weeks on experimental diets, half of each group was subjected to ovariectomy (OVX) and the remaining half received a sham operation (ovaries left intact). The study evaluated body composition, bone mass, plasma cytokines, adipokines, HbA1c, CTX-II, and knee joint’s histopathology. HFHS diet and OVX significantly induced body weight gain and leptin production. OVX rats lost bone mineral density but increased adiponectin, HbA1C, and MCP-1. The OVX rats fed HFHS showed the highest Mankin scores. Importantly, inclusion of GSM reduced these pathological features. In conclusion, GSM might be beneficial in halting the progression of OA.
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Coenzyme Q 10 Supplementation Improves Adipokine Levels and Alleviates Inflammation and Lipid Peroxidation in Conditions of Metabolic Syndrome: A Meta-Analysis of Randomized Controlled Trials. Int J Mol Sci 2020; 21:ijms21093247. [PMID: 32375340 PMCID: PMC7247332 DOI: 10.3390/ijms21093247] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022] Open
Abstract
Evidence from randomized controlled trials (RCTs) suggests that coenzyme Q10 (CoQ10) can regulate adipokine levels to impact inflammation and oxidative stress in conditions of metabolic syndrome. Here, prominent electronic databases such as MEDLINE, Cochrane Library, and EMBASE were searched for eligible RCTs reporting on any correlation between adipokine levels and modulation of inflammation and oxidative stress in individuals with metabolic syndrome taking CoQ10. The risk of bias was assessed using the modified Black and Downs checklist, while the Grading of Recommendations Assessment, Development and Evaluation (GRADE) tool was used to evaluate the quality of evidence. Results from the current meta-analysis, involving 318 participants, showed that CoQ10 supplementation in individuals with metabolic syndrome increased adiponectin levels when compared to those on placebo (SMD: 1.44 [95% CI: -0.13, 3.00]; I2 = 96%, p < 0.00001). Moreover, CoQ10 supplementation significantly lowered inflammation markers in individuals with metabolic syndrome in comparison to those on placebo (SMD: -0.31 [95% CI: -0.54, -0.08]; I2 = 51%, p = 0.07). Such benefits with CoQ10 supplementation were related to its ameliorative effects on lipid peroxidation by reducing malondialdehyde levels, concomitant to improving glucose control and liver function. The overall findings suggest that optimal regulation of adipokine function is crucial for the beneficial effects of CoQ10 in improving metabolic health.
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Kimmerling KA, Oswald SJ, Huebner JL, Little D, Kraus VB, Kang JX, Wu CL, Guilak F. Transgenic conversion of ω-6 to ω-3 polyunsaturated fatty acids via fat-1 reduces the severity of post-traumatic osteoarthritis. Arthritis Res Ther 2020; 22:83. [PMID: 32295649 PMCID: PMC7160898 DOI: 10.1186/s13075-020-02170-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 03/30/2020] [Indexed: 12/22/2022] Open
Abstract
Background Dietary fatty acid (FA) content has been shown to influence the development of post-traumatic osteoarthritis (PTOA) in obesity. We used the fat-1 transgenic mouse to examine the hypothesis that endogenous reduction of ω-6 to ω-3 FA ratio, under the same dietary conditions, would mitigate metabolic inflammation and the pathogenesis of PTOA in obese male and female mice. Methods Male and female fat-1 and wild-type littermates were fed either a control diet or an ω-6 FA-rich high-fat diet and underwent destabilization of the medial meniscus (DMM) surgery to induce PTOA. OA severity, synovitis, and osteophyte formation were determined histologically, while biomarker and lipidomic analyses were performed to evaluate levels of adipokines, insulin, pro-/anti-inflammatory cytokines, and FAs in serum and joint synovial fluid. Multivariable models were performed to elucidate the associations of dietary, metabolic, and mechanical factors with PTOA. Results We found that elevated serum levels of ω-3 FAs in fat-1 mice as compared to wild-type controls fed the same diet resulted in reduced OA and synovitis in a sex- and diet-dependent manner, despite comparable body weights. The fat-1 mice showed trends toward decreased serum pro-inflammatory cytokines and increased anti-inflammatory cytokines. Multivariable analysis for variables predicting OA severity in mice resulted in correlations with serum FA levels, but not with body weight. Conclusions This study provides further evidence that circulating FA composition and systemic metabolic inflammation, rather than body weight, may be the major risk factor for obesity-associated OA. We also demonstrate the potential genetic use of ω-3 FA desaturase in mitigating PTOA in obese patients following injury.
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Affiliation(s)
- Kelly A Kimmerling
- Department of Orthopaedic Surgery, Washington University in St. Louis, Campus Box 8233, Couch Biomedical Research Bldg, Room 3121, St. Louis, MO, 63110, USA.,Shriners Hospitals for Children - St. Louis, St. Louis, MO, USA
| | - Sara J Oswald
- Department of Orthopaedic Surgery, Washington University in St. Louis, Campus Box 8233, Couch Biomedical Research Bldg, Room 3121, St. Louis, MO, 63110, USA.,Shriners Hospitals for Children - St. Louis, St. Louis, MO, USA
| | - Janet L Huebner
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, USA
| | - Dianne Little
- Department of Basic Medical Sciences, Purdue University, West Lafayette, IN, USA.,Department of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
| | - Virginia B Kraus
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, USA.,Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Jing X Kang
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Chia-Lung Wu
- Department of Orthopaedic Surgery, Washington University in St. Louis, Campus Box 8233, Couch Biomedical Research Bldg, Room 3121, St. Louis, MO, 63110, USA. .,Shriners Hospitals for Children - St. Louis, St. Louis, MO, USA.
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Washington University in St. Louis, Campus Box 8233, Couch Biomedical Research Bldg, Room 3121, St. Louis, MO, 63110, USA. .,Shriners Hospitals for Children - St. Louis, St. Louis, MO, USA.
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Xu Y, Tan M, Tian X, Zhang J, Zhang J, Chen J, Xu W, Sheng H. Leptin receptor mediates the proliferation and glucose metabolism of pancreatic cancer cells via AKT pathway activation. Mol Med Rep 2019; 21:945-952. [PMID: 31789415 DOI: 10.3892/mmr.2019.10855] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 04/04/2019] [Indexed: 11/06/2022] Open
Abstract
Pancreatic cancer (PC) is the fourth leading cause of cancer‑related mortality worldwide. Leptin is an adipokine that is significantly increased in obese patients and that functions in various biological processes of cancer, such as tumor growth and metastasis. However, its role in PC cell proliferation and glucose metabolism and the underlying mechanisms remain unclear. In the present study, in vitro leptin treatment significantly promoted cell proliferation and increased glucose uptake and lactate production of human PC and healthy pancreas cells in a dose‑dependent manner, accompanied by increased expression of the glycolytic enzymes hexokinase II and glucose transporter 1. Furthermore, leptin receptor‑specific short hairpin RNAs were used to silence leptin receptor expression in PC cells, which had the opposite effect to leptin stimulation and decreased AKT phosphorylation. In addition, the effects of leptin stimulation were significantly counteracted by the AKT inhibitor LY294002, whereas the effects of leptin silencing were counteracted by AKT activator insulin‑like growth factor 1. The results of the present study suggested that leptin may contribute to cell proliferation and glucose metabolism of human PC cells, which may be through activation of the AKT pathway.
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Affiliation(s)
- Yingjie Xu
- Department of Surgery, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Meiyu Tan
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Xiaoyu Tian
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Jun Zhang
- Digestive Disease Research Institute, Shanghai Huashan Hospital, Shanghai 200041, P.R. China
| | - Jie Zhang
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Jiajie Chen
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Weihong Xu
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
| | - Huiming Sheng
- Department of Clinical Laboratory, Shanghai Tongren Hospital, Shanghai 200336, P.R. China
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Lee YB, Hwang HJ, Kim JA, Hwang SY, Roh E, Hong SH, Choi KM, Baik SH, Yoo HJ. Association of serum FAM19A5 with metabolic and vascular risk factors in human subjects with or without type 2 diabetes. Diab Vasc Dis Res 2019; 16:530-538. [PMID: 31280604 DOI: 10.1177/1479164119860746] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES A recent experimental study revealed that family with sequence similarity 19 [chemokine (C-C motif)-like] member A5 (FAM19A5), a novel secreted adipokine, has inhibitory effects on vascular smooth muscle cell proliferation and migration, and on neointima formation in injured arteries. We investigated the associations between serum FAM19A5 concentration and cardio-metabolic risk factors for the first time in human subjects. METHODS Circulating FAM19A5 concentrations and their associations with cardio-metabolic risk factors were explored in 223 individuals (45 without diabetes and 178 with type 2 diabetes). RESULTS Serum FAM19A5 concentrations (pg/mL) were greater in patients with type 2 diabetes [median (interquartile range), 172.70 (116.19, 286.42)] compared with non-diabetic subjects [92.09 (70.32, 147.24)] (p < 0.001). Increasing serum FAM19A5 tertile was associated with trends of increasing waist-to-hip ratio, fasting plasma glucose, glycated haemoglobin and mean brachial-ankle pulse wave velocity. Serum FAM19A5 was positively correlated with waist circumference, waist-to-hip ratio, alanine aminotransferase, fasting plasma glucose, glycated haemoglobin and mean brachial-ankle pulse wave velocity. Multiple stepwise regression analyses identified waist-to-hip ratio, low-density lipoprotein cholesterol and brachial-ankle pulse wave velocity as determining factors for log-transformed serum FAM19A5 concentration (R2 = 0.0689). CONCLUSION A novel adipokine FAM19A5 was related to various metabolic and vascular risk factors in humans, suggesting its potential as a biomarker of cardio-metabolic disease.
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Affiliation(s)
- You-Bin Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hwan-Jin Hwang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jung A Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Soon Young Hwang
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Eun Roh
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - So-Hyeon Hong
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyung Mook Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sei Hyun Baik
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hye Jin Yoo
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
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Blood profile of obese and aged dogs (Canis familiaris). ACTA VET BRNO 2019. [DOI: 10.2754/avb201988010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to evaluate the blood profile and haematological changes in obese adult and senior dogs. An evaluation was made from the blood profile of 59 obese adult and senior dogs. The animals were divided into two groups, group 1 (G1) with 30 obese adult dogs (2 to 8 years) and group 2 (G2) with 29 obese senior dogs (over 8 years old). The mean values of the erythrogram and platelet count parameters of both groups remained within the compared reference ranges except the red cell distribution width (RDW), whose values were lower than the reference ranges in both groups. A comparison of the values of erythrogram and platelet count of the groups indicated that the RDW and MPV (mean platelet volume) of G2 were higher than those of G1. As for the white blood cell count (WBC), only the number of band neutrophils exceeded the physiological limits for the species in both groups, with no significant difference in values between the age groups. The males in G2 showed a significantly higher mean eosinophil count than those in G1 and than the females of both groups. As for the frequency of findings, 90% of the animals in G1 and 68.96% in G2 showed left shift neutrophils (LSN), while 34.48% in G1 and 20% in G2 showed eosinophilia. It was concluded that, irrespective of age, obese animals presented no changes in erythrogram and platelet indices, and that their WBC may exhibit discrete LSN without leukocytosis.
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Key Genes of Lipid Metabolism and WNT-Signaling Are Downregulated in Subcutaneous Adipose Tissue with Moderate Weight Loss. Nutrients 2019; 11:nu11030639. [PMID: 30884788 PMCID: PMC6471921 DOI: 10.3390/nu11030639] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 03/12/2019] [Indexed: 02/07/2023] Open
Abstract
Smaller cross-sectional studies and bariatric surgery trials suggest that weight loss may change the expression of genes in adipose tissue that have been implicated in the development of metabolic diseases, but well-powered intervention trials are lacking. In post hoc analyses of data from a 12-week dietary intervention trial initially designed to compare metabolic effects of intermittent vs. continuous calorie restriction, we analyzed the effects of overall weight loss on the subcutaneous adipose tissue (SAT) transcriptome. Changes in the transcriptome were measured by microarray using SAT samples of 138 overweight or obese individuals (age range: 35–65 years, BMI range: 25–40, non-smokers, non-diabetics). Participants were grouped post hoc according to the degree of their weight loss by quartiles (average weight loss in quartiles 1 to 4: 0%, −3.2%, −5.9%, and −10.7%). Candidate genes showing differential expression with weight loss according to microarray analyses were validated by reverse transcription quantitative polymerase chain reaction (RT-qPCR), and fold changes (FCs) were calculated to quantify differences in gene expression. A comparison of individuals in the highest vs. the lowest weight loss quartile revealed 681 genes to be differentially expressed (corrected p < 0.05), with 40 showing FCs of at least 0.4. Out of these, expression changes in secreted frizzled-related protein 2 (SFRP2, FC = 0.65, p = 0.006), stearoyl-CoA desaturase (SCD, FC = −1.00, p < 0.001), and hypoxia inducible lipid droplet-associated (HILPDA, FC = −0.45, p = 0.001) with weight loss were confirmed by RT-qPCR. Dietary weight loss induces significant changes in the expression of genes implicated in lipid metabolism (SCD and HILPDA) and WNT-signaling (SFRP2) in SAT.
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Amin MN, Hussain MS, Sarwar MS, Rahman Moghal MM, Das A, Hossain MZ, Chowdhury JA, Millat MS, Islam MS. How the association between obesity and inflammation may lead to insulin resistance and cancer. Diabetes Metab Syndr 2019; 13:1213-1224. [PMID: 31336467 DOI: 10.1016/j.dsx.2019.01.041] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 01/22/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND OBJECTIVES Obesity is associated with metabolic dysfunction and over nutrition. Increased body mass index and obesity are strongly amalgamated with changes in the physiological function of adipose tissue, leading to altered secretion of adipocytokines, inflammatory mediators release as well as chronic inflammation and insulin resistance. The purposes of this study were to review the evidence of how obesity and inflammation may lead to insulin resistance and cancer. SUMMARY Recent findings suggested that increased level of inflammatory mediators in obesity, plays an introductory and cabalistic role in the development of different types of inflammatory disorders including type 2 diabetes mellitus. Link between elevated body mass index and type 2 diabetes mellitus (T2DM). Several of the factors-such as increased levels of leptin, plasminogen activator inhibitor-1, decreased levels of adiponectin, insulin resistance, chronic inflammation etc. consequently result in carcinogenesis and carcinogenic progression too. CONCLUSION This review summarizes how cytokine production in adipose tissue of obese subject creates a chronic inflammatory environment that favors tumor cell motility and invasion to enhance the metastatic potential of tumor cells. High levels of cytokine in the circulation of affected individuals have been associated with a significantly worse outcome. This article also reconnoiters the mechanisms that link obesity to numerous disorders such as inflammation, diabetes, cancers and most specifically combine these processes in a single image. Understanding these mechanisms may assist to understand the consequences of obesity.
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Affiliation(s)
- Mohammad Nurul Amin
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh; Department of Pharmacy, Atish Dipankar University of Science and Technology, Sonapur, Uttara, Dhaka, Bangladesh
| | - Md Saddam Hussain
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh
| | - Md Shahid Sarwar
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh
| | - Md Mizanur Rahman Moghal
- Department of Pharmacy, Mawlana Bhashani Science and Technology University, Santosh, 1902, Tangail, Bangladesh
| | - Abhijit Das
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh
| | - Mohammad Zahid Hossain
- Department of Pharmacy, State University of Bangladesh, Dhanmondi, Dhaka, 1206, Bangladesh
| | - Jakir Ahmed Chowdhury
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Md Shalahuddin Millat
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh
| | - Mohammad Safiqul Islam
- Department of Pharmacy, Noakhali Science and Technology University, Sonapur, Noakhali, 3814, Bangladesh.
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Zempo-Miyaki A, Kumagai H, Yoshikawa T, Myoenzono K, So R, Otsuki T, Tanaka K, Maeda S. Pentraxin 3 increases in adult overweight and obese men after weight loss by dietary modification with exercise training. Appl Physiol Nutr Metab 2018; 44:111-117. [PMID: 29990442 DOI: 10.1139/apnm-2018-0214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The circulatory level of pentraxin 3 (PTX3), an anti-inflammatory cardioprotective protein, has been shown to be lower in obese individuals than in those with normal weight. However, reports on the effects of different weight-loss methods on PTX3 are limited. The present study aimed to investigate the effect of weight loss on circulating PTX3 levels in overweight and obese men and to examine the combined effect of dietary modification and exercise training on PTX3 levels. Forty-eight overweight and obese men were assigned to 2 groups: dietary modification (group D) or exercise training and dietary modification (group DE). Groups D and DE were composed of 27 and 21 participants, respectively. We observed a significant independent relationship between changes in PTX3 and body mass index (BMI) in all participants (β = -0.617, p < 0.01). Subsequently, we compared the effects of the 2 weight-loss methods on plasma PTX3 in groups D and DE. The magnitude of the increase in plasma PTX3 levels was similar in the 2 groups. Interestingly, we observed that PTX3 levels in group DE increased significantly more than those in group D in subjects who achieved normal weight, based on BMI, after interventions. Our study suggested that weight reduction after lifestyle modification significantly increased PTX3 levels in overweight and obese men, and the addition of habitual exercise to dietary modification enhanced the magnitude of the increase in PTX3 levels in obese individuals achieving normal weight after weight loss.
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Affiliation(s)
- Asako Zempo-Miyaki
- a Faculty of Sport and Health Sciences, Ryutsu Keizai University, Ibaraki 301-8555, Japan
| | - Hiroshi Kumagai
- b Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan.,c Japan Society for the Promotion of Sciences, Tokyo 102-0083, Japan
| | - Toru Yoshikawa
- c Japan Society for the Promotion of Sciences, Tokyo 102-0083, Japan.,d Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Kanae Myoenzono
- d Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Rina So
- e Research Center for Overwork-Related Disorders, National Institute of Occupational Safety and Health, Kawasaki, Kanagawa 214-8585, Japan
| | - Takeshi Otsuki
- a Faculty of Sport and Health Sciences, Ryutsu Keizai University, Ibaraki 301-8555, Japan
| | - Kiyoji Tanaka
- f Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Seiji Maeda
- f Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki 305-8577, Japan
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14
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TIMIRCI-KAHRAMAN OZLEM, YILMAZ UMIT, YILMAZ NESIBE, CEVIK AYDIN, HOROZOGLU CEM, CELIK FARUK, GOKCE MUHAMMEDOGUZ, ERGEN ARZU, MELEKOGLU ABDULLAH, ZEYBEK UMIT. A Study of Short- and Long-term mRNA Levels of the Retn, Iapp, and Drd5 Genes in Obese Mice Induced with High-fat Diet. In Vivo 2018; 32. [PMID: 29936463 PMCID: PMC6117763 DOI: 10.21873/invivo.112312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND/AIM Adipocyte gene expression is altered in obese individuals through multiple metabolic and biochemical pathways. In this study, we aimed to examine the expression of resistin (Retn), amylin (Iapp), and dopamine receptor domain 5 (Drd5) genes previously suggested to contribute to the pathogenesis of obesity, albeit controversially. We also aimed to determine the effects on short and long-term mRNA levels of these genes in obese mice, induced with high-fat diet (HFD). MATERIALS AND METHODS Two obesity models were created in our study: group T1 (20 mice) was fed with HFD (60% fat) for 3 months, and group T2 (20 mice) was fed with HFD (60% fat) for 6 months. The control group T0 (20 mice) was fed with a diet of 10% kcal fat supplement for 6 months. At the end of the experiment, their adipose tissues were dissected surgically. Tissue samples of each group were pooled for RNA isolation, cDNA synthesis was carried out and the mRNA levels were examined by quantitative real-time polymerase chain reaction. Serum resistin levels were measured using multiplex bead (luminex) technology for validation. RESULTS In T2 mice, the mRNA expression of Retn showed a moderate up-regulation (fold change=8.32; p=0.0019) in the adipose tissues. Iapp expression was also significantly up-regulated (fold change=9.78; p=0.012). Moreover, a 6.36-fold up-regulation for Drd5 was observed in the adipose tissues of T2 mice (p<0.001). At the same time, serum levels of resistin were found to be high in T1 and T2 mice compared to the control group (p<0.001 and p=0.024, respectively). CONCLUSION Our study demonstrated that the mRNA levels of the genetic markers considered to play a role in adipogenesis were different in short- and long-term obesity models formed in C57BL/6J mice using HFD.
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Affiliation(s)
- OZLEM TIMIRCI-KAHRAMAN
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - UMIT YILMAZ
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - NESIBE YILMAZ
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - AYDIN CEVIK
- Department of Experimental Animal Biology and Biomedical Application Techniques, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - CEM HOROZOGLU
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey,Department of Medical Services and Techniques, Istanbul Gelisim University, Istanbul, Turkey
| | - FARUK CELIK
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - MUHAMMED OGUZ GOKCE
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - ARZU ERGEN
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - ABDULLAH MELEKOGLU
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - UMIT ZEYBEK
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
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15
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Timirci-Kahraman O, Yilmaz U, Yilmaz N, Cevik A, Horozoglu C, Celik F, Gokce MO, Ergen A, Melekoglu A, Zeybek U. A Study of Short- and Long-term mRNA Levels of the Retn, Iapp, and Drd5 Genes in Obese Mice Induced with High-fat Diet. In Vivo 2018; 32:813-817. [PMID: 29936463 DOI: 10.21873/invivo.11312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/26/2018] [Accepted: 03/28/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND/AIM Adipocyte gene expression is altered in obese individuals through multiple metabolic and biochemical pathways. In this study, we aimed to examine the expression of resistin (Retn), amylin (Iapp), and dopamine receptor domain 5 (Drd5) genes previously suggested to contribute to the pathogenesis of obesity, albeit controversially. We also aimed to determine the effects on short and long-term mRNA levels of these genes in obese mice, induced with high-fat diet (HFD). MATERIALS AND METHODS Two obesity models were created in our study: group T1 (20 mice) was fed with HFD (60% fat) for 3 months, and group T2 (20 mice) was fed with HFD (60% fat) for 6 months. The control group T0 (20 mice) was fed with a diet of 10% kcal fat supplement for 6 months. At the end of the experiment, their adipose tissues were dissected surgically. Tissue samples of each group were pooled for RNA isolation, cDNA synthesis was carried out and the mRNA levels were examined by quantitative real-time polymerase chain reaction. Serum resistin levels were measured using multiplex bead (luminex) technology for validation. RESULTS In T2 mice, the mRNA expression of Retn showed a moderate up-regulation (fold change=8.32; p=0.0019) in the adipose tissues. Iapp expression was also significantly up-regulated (fold change=9.78; p=0.012). Moreover, a 6.36-fold up-regulation for Drd5 was observed in the adipose tissues of T2 mice (p<0.001). At the same time, serum levels of resistin were found to be high in T1 and T2 mice compared to the control group (p<0.001 and p=0.024, respectively). CONCLUSION Our study demonstrated that the mRNA levels of the genetic markers considered to play a role in adipogenesis were different in short- and long-term obesity models formed in C57BL/6J mice using HFD.
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Affiliation(s)
- Ozlem Timirci-Kahraman
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Umit Yilmaz
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Nesibe Yilmaz
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Aydin Cevik
- Department of Experimental Animal Biology and Biomedical Application Techniques, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Cem Horozoglu
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey.,Department of Medical Services and Techniques, Istanbul Gelisim University, Istanbul, Turkey
| | - Faruk Celik
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Muhammed Oguz Gokce
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Arzu Ergen
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Abdullah Melekoglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Umit Zeybek
- Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
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Korek E, Gibas-Dorna M, Chęcińska-Maciejewska Z, Krauss H, Łagiedo-Żelazowska M, Kołodziejczak B, Bogdański P. Serum RBP4 positively correlates with triglyceride level but not with BMI, fat mass and insulin resistance in healthy obese and non-obese individuals. Biomarkers 2018; 23:683-688. [DOI: 10.1080/1354750x.2018.1479770] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Emilia Korek
- Department of Physiology, Poznan University of Medical Sciences, Poznan, Poland
| | | | | | - Hanna Krauss
- Department of Physiology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Barbara Kołodziejczak
- Department of Computer Science and Statistics, Poznan University of Medical Sciences, Poznan, Poland
| | - Paweł Bogdański
- Department of Education and Obesity Treatment and Metabolic Disorders, Poznan University of Medical Sciences, Poznan, Poland
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17
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Iwata M, Hara K, Kamura Y, Honoki H, Fujisaka S, Ishiki M, Usui I, Yagi K, Fukushima Y, Takano A, Kato H, Murakami S, Higuchi K, Kobashi C, Fukuda K, Koshimizu Y, Tobe K. Ratio of low molecular weight serum adiponectin to the total adiponectin value is associated with type 2 diabetes through its relation to increasing insulin resistance. PLoS One 2018; 13:e0192609. [PMID: 29494595 PMCID: PMC5832218 DOI: 10.1371/journal.pone.0192609] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/27/2018] [Indexed: 01/14/2023] Open
Abstract
AIM Among the three adiponectin isoforms, a lower ratio of high molecular weight (HMW) adiponectin to total adiponectin (TA) is well known to cause insulin resistance and type 2 diabetes (T2D). However, how the levels of other adiponectin isoforms, such as the middle molecular weight (MMW) and low molecular weight (LMW) isoforms, and their relative ratio to TA change in T2D subjects has not been determined. Therefore, we investigated the association of these adiponectin-related parameters with T2D. METHODS We examined the associations between adiponectin-related parameters and diabetes in a group of 394 T2D subjects and 374 controls (1st group) randomly selected from among the participants in our previous study. The associations between these parameters and the HOMA-IR in a 2nd group, consisting of the subjects remaining in the 1st group after the exclusion of subjects receiving diabetic medication, were also examined. RESULT In the 1st group, after adjusting for confounding factor, the levels of all the adiponectin isoforms and the HMW/TA ratio were significantly lower among the diabetic subjects than among the controls (all P values < 0.01). On the contrary, the LMW/TA ratio was significantly higher among the diabetic subjects (P < 0.01) and was positively associated with T2D (odds ratio = 8.64, P < 0.01). In the 2nd group, the HMW/TA ratio was inversely associated with the HOMA-IR; however, the LMW/TA ratio was positively associated with the HOMA-IR (β for LMW/TA ratio = 0.89, SE = 0.24, P < 0.001), similar to the association with T2D. The MMW/TA ratio was not associated with T2D or the HOMA-IR. CONCLUSION The current investigation demonstrated that, unlike the reduction in the levels of all the adiponectin isoforms and the HMW/TA ratio, an increased LMW/TA ratio was associated with T2D through its relation to insulin resistance.
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Affiliation(s)
- Minoru Iwata
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
- Health Administration Center, University of Toyama, Toyama, Toyama, Japan
- * E-mail:
| | - Kazuo Hara
- Division of Endocrinology and Metabolism, Department of Comprehensive Medicine, Saitama Medical Center, Jichi Medical University, Omiya-ku, Saitama, Japan
- Department of Diabetology, Endocrinology and Metabolism, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Yutaka Kamura
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Hisae Honoki
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Shiho Fujisaka
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Manabu Ishiki
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Isao Usui
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Kunimasa Yagi
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
| | - Yasuo Fukushima
- Department of Internal Medicine, Asahi General Hospital, Asahi-machi, Toyama, Japan
| | - Atsuko Takano
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Saiseikai Takaoka Hospital, Takaoka, Toyama, Japan
| | - Hiromi Kato
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Japan Community Health care Organization Takaoka Fushiki Hospital, Takaoka, Toyama, Japan
| | - Shihou Murakami
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Toyama Rosai Hospital, Uozu, Toyama, Japan
| | - Kiyohiro Higuchi
- Department of Internal Medicine, JA Niigata Kouseiren Itoigawa General Hospital, Itoigawa, Niigata, Japan
| | - Chikaaki Kobashi
- Department of Internal Medicine, Kamiichi General Hospital, Kamiichi-machi, Toyama, Japan
| | - Kazuhito Fukuda
- Department of Internal Medicine, Fukuda Clinic, Himi, Toyama, Japan
| | - Yukiko Koshimizu
- Department of Internal Medicine, Urata Clinic, Kanazawa, Ishikawa, Japan
| | - Kazuyuki Tobe
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Toyama, Japan
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18
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Messaggio F, Mendonsa AM, Castellanos J, Nagathihalli NS, Gorden L, Merchant NB, VanSaun MN. Adiponectin receptor agonists inhibit leptin induced pSTAT3 and in vivo pancreatic tumor growth. Oncotarget 2017; 8:85378-85391. [PMID: 29156726 PMCID: PMC5689616 DOI: 10.18632/oncotarget.19905] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 07/18/2017] [Indexed: 12/13/2022] Open
Abstract
Obesity is a significant risk factor for pancreatic cancer, harboring a chronic inflammatory condition characterized by dysregulation of the adipokines, leptin and adiponectin, that in turn alter oncogenic signaling pathways. We and others have shown that leptin promotes the proliferation and an invasive potential of pancreatic cancer cells through STAT3 mediated signaling. However, the role of adiponectin on the tumorigenicity of pancreatic cancer has not been elucidated. Adiponectin represents an important negative regulator of cytokines, which acts through two receptors, ADIPOR1 and ADIPOR2, to elicit pro-apoptotic, anti-inflammatory, and anti-angiogenic responses. We show that the level and expression of both adiponectin receptors are decreased in pancreatic tumors relative to normal pancreatic tissue. In vitro stimulation with adiponectin or a small molecule adiponectin receptor agonist, AdipoRon, increases apoptosis while inhibiting pancreatic cancer cell proliferation, colony formation, and anchorage independent growth. In addition, adiponectin receptor agonism inhibits leptin mediated STAT3 activation. In vivo, treatment of mice with AdipoRon inhibits orthotopic pancreatic tumor growth. These results demonstrate that adiponectin receptor activation is a key regulator of pancreatic cancer growth and AdipoRon provides a rational agent for the development of novel therapeutic strategies for pancreatic cancer.
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Affiliation(s)
- Fanuel Messaggio
- Division of Surgical Oncology, Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Alisha M Mendonsa
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jason Castellanos
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Nagaraj S Nagathihalli
- Division of Surgical Oncology, Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Lee Gorden
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Nipun B Merchant
- Division of Surgical Oncology, Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Michael N VanSaun
- Division of Surgical Oncology, Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA
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Zayani N, Hamdouni H, Boumaiza I, Achour O, Neffati F, Omezzine A, Najjar MF, Bouslama A. Resistin polymorphims, plasma resistin levels and obesity in Tunisian volunteers. J Clin Lab Anal 2017; 32. [PMID: 28393393 DOI: 10.1002/jcla.22227] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 03/07/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Adipose tissue is an important endocrine organ that secretes a number of adipokines, like Resistin (RETN); it's an adipocytes-secreted cytokine and has been proposed as a link between obesity and diabetes. Many resistin gene polymorphisms were described and their implication in obesity was controversial. This study was to investigate the prevalence of single nucleotide polymorphisms (SNPs) in RETN gene 420C/G; 44G/A; 62G/A; 394C/G and 299 G/A and their association with Resistin level and obesity in Tunisian volunteers. METHODS We recruited 169 nonobese (mean age=42.16-14.26 years; mean body mass index [BMI]=24.51-3.69 kg/m2 ) and 160 obese (mean age=47.86-11.17 years; mean BMI=36-4.78 kg/m2 ). Genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism. Anthropometric parameters, lipid levels, Glycemia and insulinemia were measured, BMI was calculated and insulinresistance was evaluated with the homeostasis model assessment insulin resistance (HOMA-IR) and resistin level was measured by ELISA. Statistical analyses were performed by SPSS19.0. RESULTS After adjustment for confounding parameters; the Odds Ratio (OR) of obesity associated with mutated genotypes at 420C/G compared with normal genotype was as: OR=2.17; 95% CI [1.28-3.68], P=.004. The serum Resistin levels present no significant association with all RETN polymorphisms and it was significantly associated with BMI (P=.047). In our haplotype analysis, one haplotype seems to be protective and one other seems to be the highest risk to obesity. CONCLUSION The 420 C/G Polymorphism were associated with obesity and Leptin concentration in our population.
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Affiliation(s)
- Nesrine Zayani
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Haithem Hamdouni
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Imen Boumaiza
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Ons Achour
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Fadoua Neffati
- Laboratory of Biochemistry and Toxicology, Monastir's University Hospital, Monastir, Tunisia
| | - Asma Omezzine
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Mohamed Fadhel Najjar
- Laboratory of Biochemistry and Toxicology, Monastir's University Hospital, Monastir, Tunisia
| | - Ali Bouslama
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
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20
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Zayani N, Omezzine A, Boumaiza I, Achour O, Rebhi L, Rejeb J, Ben Rejeb N, Ben Abdelaziz A, Bouslama A. Association of ADIPOQ, leptin, LEPR, and resistin polymorphisms with obesity parameters in Hammam Sousse Sahloul Heart Study. J Clin Lab Anal 2017; 31. [PMID: 28195351 DOI: 10.1002/jcla.22148] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 12/26/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adipose tissue is an important endocrine organ that secretes a number of adipokines, such as adiponectin (ADIPOQ), leptin (LEP), leptin receptor (LEPR), and resistin (RETN) which may be implicated in obesity. Some adipokines' polymorphisms of genes might influence their concentrations and/or activities. Our aim was to study the relationship between seven SNPs in ADIPOQ (+45T<G (rs2241766); +276G<T (rs1501299); -4255C<T (rs822393); -395G<T (rs17366568)), LEP (2548G<A (rs7799039)), LEPR (223Q<R (rs1137101)), and RETN (-420C<G (rs1862513)) and obesity in Hammam Sousse Sahloul Heart Study (HSHS). METHODS The study, carried out between February and June 2009, is mainly focused on 1121 respondents in HSHS which is a population-based epidemiological study of type "community-based" on cardiovascular risk. Genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Serum lipids and anthropometric parameters were measured. Statistic analysis was performed on SPSSv19. RESULTS The polymorphisms of ADIPOQ 4522C<T and 276G<T, LEP 2548G<A, and RETN 420C<G seem to contribute to obesity. In fact, adjusted odds ratios (ORs) of obesity associated with mutated genotypes of each polymorphism were respectively OR=1.38, P=.037; OR=0.608, P<.001; OR=2.23, P=.034; and OR=2.18, P<.001. The 276G<T, 4522C<T, and 420C<G were associated with increased BMI (P=.010, P=.028, and P<.001). A significant association was found between the 276G<T; 4522C<T, LEP 2548G<A and 420C<G, and the waist circumference and hip measurements. CONCLUSION ADIPOQ, LEP, and RETN gene polymorphisms were associated with obesity parameters in HSHS population.
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Affiliation(s)
- Nesrine Zayani
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Asma Omezzine
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Imen Boumaiza
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Ons Achour
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Lamia Rebhi
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Jihen Rejeb
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Nabila Ben Rejeb
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | | | - Ali Bouslama
- Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
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21
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Brito-Luna MJ, Villanueva-Quintero DG, Sandoval-Talamantes AK, Fafutis-Morris M, Graciano-Machuca O, Sanchez-Hernandez PE, Alvarado-Navarro A. Correlation of IL-12, IL-22, and IL-23 in patients with psoriasis and metabolic syndrome. Preliminary report. Cytokine 2016; 85:130-6. [PMID: 27344023 DOI: 10.1016/j.cyto.2016.06.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/20/2016] [Accepted: 06/15/2016] [Indexed: 01/24/2023]
Abstract
BACKGROUND Psoriasis is an autoimmune skin disease characterised by proliferation of keratinocytes, primarily due to cytokines Th1 and Th17. This profile is involved in pathogenesis of metabolic syndrome, a frequently found comorbidity in patients with psoriasis. OBJECTIVE In this study we determine the correlation of levels of pro-inflammatory cytokines TNF-α, IL-23, IL-12, and IL-22 in patients with psoriasis with and without metabolic syndrome and clinically healthy controls. METHODS We included 55 patients with plaque psoriasis: 30 with metabolic syndrome (PPMS), 25 without metabolic syndrome (PP), 15 healthy subjects (HS) and 15 with metabolic syndrome (MS). Quantification of serum levels of IL-12, TNF-α, IL-22, and IL-23 was done by ELISA. RESULTS We observed that serum levels of IL-12 were more elevated in PP group, while the lowest levels of TNF-α were seen in HS group. IL-22 was found to be higher in PP than in PPMS (p<0.05). PP patients with PASI scores rating as severe showed higher levels of IL-12. TNF-α level analysis showed significant differences in HS group compared with the others; levels of this cytokine were lower in patients with PP and moderate PASI scores than in MS group (p<0.05). We found no correlation between cytokine levels and psoriasis or between cytokines and PASI scores. In PP group, a positive correlation was observed between IL-23 and fasting glucose (r=0.432, p<0.05), as well as a negative correlation between IL-23, IL-22, and IL-12 versus waist circumference (r=-0.504, r=-0.556 and r=-0.511, respectively; p<0.05). CONCLUSIONS Psoriasis is not just a skin disorder, but rather a condition with systemic implications, with intervention of pro-inflammatory cytokines that contribute to metabolic syndrome and other comorbidities, which in turn increases the risk of developing cardiovascular disease.
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Affiliation(s)
- M J Brito-Luna
- Jalisco Dermatology Institute "Dr. José Barba Rubio", Secretary of Health, Jalisco, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
| | - D G Villanueva-Quintero
- Jalisco Dermatology Institute "Dr. José Barba Rubio", Secretary of Health, Jalisco, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
| | - A K Sandoval-Talamantes
- Centre for Research in Immunology and Dermatology, Health Sciences University Centre, University of Guadalajara, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
| | - M Fafutis-Morris
- Centre for Research in Immunology and Dermatology, Health Sciences University Centre, University of Guadalajara, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
| | - O Graciano-Machuca
- Centre for Research in Immunology and Dermatology, Health Sciences University Centre, University of Guadalajara, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
| | - P E Sanchez-Hernandez
- Immunology Laboratory, Department of Physiology, Health Sciences University Centre, University of Guadalajara, México, Sierra Mojada 950, Col. Independencia, CP 44340 Guadalajara, Jalisco, Mexico.
| | - A Alvarado-Navarro
- Centre for Research in Immunology and Dermatology, Health Sciences University Centre, University of Guadalajara, Mexico, Av. Federalismo Norte 3102, Atemajac del Valle, CP 45190 Zapopan, Jalisco, Mexico.
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Li S, Liu R, Arguelles L, Wang G, Zhang J, Shen X, Wang X. Adiposity trajectory and its associations with plasma adipokine levels in children and adolescents-A prospective cohort study. Obesity (Silver Spring) 2016; 24:408-16. [PMID: 26704698 PMCID: PMC4731239 DOI: 10.1002/oby.21378] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 08/10/2015] [Accepted: 09/13/2015] [Indexed: 12/18/2022]
Abstract
OBJECTIVE This study aimed to examine the associations of longitudinal adiposity measures with two adipokines, leptin and adiponectin, and their ratio in children and adolescents. METHODS A total of 953 children and adolescents participated in a 6-year longitudinal study. Body mass index (BMI), percentage body fat (%BF), and fat mass index (FMI) were used to assess adiposity status. RESULTS After adjusting for possible confounders, our regression models revealed that BMI, %BF, and FMI, in both the baseline and follow-up surveys were independently associated with a higher level of leptin and the leptin/adiponectin ratio at the follow-up survey, whereas the significant association with adiponectin only partly existed in adiposity measures at the follow-up visit. Moreover, the longitudinal change in adiposity measures was found to be a significant predictor for follow-up plasma adipokine levels. Compared with the low→low group, the medium→medium group, up-trend group, and high→high group all showed a significantly increased level of leptin and leptin/adiponectin ratio. The up-trend group and high→high group also had significantly decreased adiponectin levels. CONCLUSIONS These findings highlight the importance of adiposity surveillance and the utility of adipokines as biomarkers for adverse metabolic consequences of childhood adiposity.
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Affiliation(s)
- Shenghui Li
- MOE - Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - Rong Liu
- Mary Ann & J. Milburn Smith Child Health Research Program, Northwestern University Feinberg School of Medicine and Ann & Robert H. Lurie Children’s Memorial Hospital of Chicago and Stanley Manne Children’s Research Institute (formerly Children’s Memorial Hospital and Children’s Memorial Research Center), Chicago, IL, USA
| | - Lester Arguelles
- Mary Ann & J. Milburn Smith Child Health Research Program, Northwestern University Feinberg School of Medicine and Ann & Robert H. Lurie Children’s Memorial Hospital of Chicago and Stanley Manne Children’s Research Institute (formerly Children’s Memorial Hospital and Children’s Memorial Research Center), Chicago, IL, USA
| | - Guoying Wang
- Center on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Jun Zhang
- MOE - Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoming Shen
- MOE - Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaobin Wang
- Center on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
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Zhang K, Li X, Zhang L, Yang H. Association between intrauterine mild hyperglycemia and post-natal high-fat diet with adiponectin and AMPK pathway genes. Gynecol Endocrinol 2016; 32:110-5. [PMID: 26416799 DOI: 10.3109/09513590.2015.1092134] [Citation(s) in RCA: 2] [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] [Indexed: 11/13/2022] Open
Abstract
To investigate the mechanisms of maternal-fetal interactions in the setting of gestational diabetes mellitus. We investigated the long-term effects of intrauterine mild hyperglycemia and a postnatal high-fat diet on the glucose metabolism of adult offspring, and explored the role of adiponectin on hepatic gluconeogenesis. Twenty-one pregnant Wistar rats were randomly divided into an intrauterine hyperglycemia group (group D, n = 14) and a control group (group C, n = 7). Offspring were divided into four groups according to intrauterine blood glucose level and post-weaning dietary patterns (high-fat diet groups: DF and CF or normal diet groups: DN and CN, n = 8 per group). The average birth weights of group D offspring were higher than for group C. In the DF rats, low adiponectin mRNA expression in perirenal and epididymal fat was significantly positively correlated with low hepatic AdipoR1 mRNA expression and significantly correlated with high hepatic PEPCK, G-6-Pase, and PGC-1α mRNA levels. In DF rats, hepatic P-AMPK was cytoplasmically located and its level was decreased; in these rats, hepatic CRTC2 was expressed in the nucleus and its level was significantly increased. Our study shows that the dietary structure of offspring has a large influence on the incidence of abnormal glucose tolerance.
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Affiliation(s)
- Kai Zhang
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - Xin Li
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - Li Zhang
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - Huixia Yang
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
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Haam JH, Kim YS, Koo HS, Haam J, Seo NK, Kim HY, Park KC, Park KS, Kim MJ. Intermuscular adipose tissue is associated with monocyte chemoattractant protein-1, independent of visceral adipose tissue. Clin Biochem 2015; 49:439-443. [PMID: 26705742 DOI: 10.1016/j.clinbiochem.2015.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/10/2015] [Accepted: 12/12/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Emerging evidence suggests that intermuscular adipose tissue is a risk factor for insulin resistance, but the underlying mechanism still remains unclear. We investigated whether the levels of leptin, adiponectin, and monocyte chemoattractant protein-1 are associated with intermuscular adipose tissue in obese subjects. DESIGN AND METHODS A cross-sectional study was performed on 77 obese Korean women. Areas of visceral adipose tissue, subcutaneous adipose tissue, and intermuscular adipose tissue were measured by computed tomography scan, and serum concentrations of adipokines were measured by enzyme-linked immunosorbent assays. Correlation between the levels of adipokines and the fat areas was assessed using Pearson correlation and covariate-adjusted multivariable regression. RESULTS Leptin was positively correlated with subcutaneous adipose tissue (r=0.452, P<0.001), fasting insulin (r=0.403, P<0.001), and homeostasis model assessment of insulin resistance (r=0.360, P=0.001), whereas monocyte chemoattractant protein-1 was positively correlated with intermuscular adipose tissue (r=0.483, P<0.001). After adjustment for age, height, and other body composition metrics, leptin was still related to subcutaneous adipose tissue (β=0.390, P=0.001). Monocyte chemoattractant protein-1 was associated with intermuscular adipose tissue (β=0.433, P=0.001) after adjustment for visceral adipose tissue. CONCLUSIONS Intermuscular adipose tissue was correlated with monocyte chemoattractant protein-1, suggesting its role in the development of insulin resistance.
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Affiliation(s)
- Ji-Hee Haam
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Young-Sang Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Hyung Suk Koo
- Department of Family Medicine, Dongguk University Bundang Oriental Hospital, 268, Buljeong-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Juhee Haam
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T.W. Alexander Drive, Research Triangle Park, Durham, NC 27709, USA
| | - Nam Kyoung Seo
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Hyung Yuk Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Kyung-Chae Park
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Kye-Seon Park
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea
| | - Moon Jong Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South Korea.
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Esper RM, Dame M, McClintock S, Holt PR, Dannenberg AJ, Wicha MS, Brenner DE. Leptin and Adiponectin Modulate the Self-renewal of Normal Human Breast Epithelial Stem Cells. Cancer Prev Res (Phila) 2015; 8:1174-83. [PMID: 26487401 DOI: 10.1158/1940-6207.capr-14-0334] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 10/09/2015] [Indexed: 12/23/2022]
Abstract
Multiple mechanisms are likely to account for the link between obesity and increased risk of postmenopausal breast cancer. Two adipokines, leptin and adiponectin, are of particular interest due to their opposing biologic functions and associations with breast cancer risk. In the current study, we investigated the effects of leptin and adiponectin on normal breast epithelial stem cells. Levels of leptin in human adipose explant-derived conditioned media positively correlated with the size of the normal breast stem cell pool. In contrast, an inverse relationship was found for adiponectin. Moreover, a strong linear relationship was observed between the leptin/adiponectin ratio in adipose conditioned media and breast stem cell self-renewal. Consistent with these findings, exogenous leptin stimulated whereas adiponectin suppressed breast stem cell self-renewal. In addition to local in-breast effects, circulating factors, including leptin and adiponectin, may contribute to the link between obesity and breast cancer. Increased levels of leptin and reduced amounts of adiponectin were found in serum from obese compared with age-matched lean postmenopausal women. Interestingly, serum from obese women increased stem cell self-renewal by 30% compared with only 7% for lean control serum. Taken together, these data suggest a plausible explanation for the obesity-driven increase in postmenopausal breast cancer risk. Leptin and adiponectin may function as both endocrine and paracrine/juxtacrine factors to modulate the size of the normal stem cell pool. Interventions that disrupt this axis and thereby normalize breast stem cell self-renewal could reduce the risk of breast cancer.
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Affiliation(s)
- Raymond M Esper
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan.
| | - Michael Dame
- Department of Internal Medicine Pathology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Shannon McClintock
- Department of Internal Medicine Pathology, University of Michigan Medical School, Ann Arbor, Michigan
| | | | | | - Max S Wicha
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan
| | - Dean E Brenner
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan. Department of Internal Medicine Pharmacology, University of Michigan Medical School, Ann Arbor, Michigan. VA Medical Center, Ann Arbor, Michigan
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Mendonsa AM, Chalfant MC, Gorden LD, VanSaun MN. Modulation of the leptin receptor mediates tumor growth and migration of pancreatic cancer cells. PLoS One 2015; 10:e0126686. [PMID: 25919692 PMCID: PMC4412670 DOI: 10.1371/journal.pone.0126686] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 04/07/2015] [Indexed: 01/03/2023] Open
Abstract
Obesity has been implicated as a significant risk factor for development of pancreatic cancer. In the setting of obesity, a systemic chronic inflammatory response is characterized by alterations in the production and secretion of a wide variety of growth factors. Leptin is a hormone whose level increases drastically in the serum of obese patients. High fat diet induced obesity in mice leads to an overall increased body weight, pancreatic weight, serum leptin, and pancreatic tissue leptin levels. Here we report the contribution of obesity and leptin to pancreatic cancer growth utilizing an in vivo orthotopic murine pancreatic cancer model, which resulted in increased tumor proliferation with concomitant increased tumor burden in the diet induced obese mice compared to lean mice. Human and murine pancreatic cancer cell lines were found to express the short as well as the long form of the leptin receptor and functionally responded to leptin induced activation through an increased phosphorylation of AKT473. In vitro, leptin stimulation increased cellular migration which was blocked by addition of a PI3K inhibitor. In vivo, depletion of the leptin receptor through shRNA knockdown partially abrogated increased orthotopic tumor growth in obese mice. These findings suggest that leptin contributes to pancreatic tumor growth through activation of the PI3K/AKT pathway, which promotes pancreatic tumor cell migration.
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Affiliation(s)
- Alisha M. Mendonsa
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Madeleine C. Chalfant
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Lee D. Gorden
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Michael N. VanSaun
- Department of Surgery, Division of Surgical Oncology, University of Miami, Sylvester Cancer Center, Miami, Florida, United States of America
- * E-mail:
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Haghani K, Pashaei S, Vakili S, Taheripak G, Bakhtiyari S. TNF-α knockdown alleviates palmitate-induced insulin resistance in C2C12 skeletal muscle cells. Biochem Biophys Res Commun 2015; 460:977-82. [PMID: 25839650 DOI: 10.1016/j.bbrc.2015.03.137] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 03/24/2015] [Indexed: 12/27/2022]
Abstract
Insulin resistance is a cardinal feature of Type 2 Diabetes (T2D), which accompanied by lipid accumulation and TNF-α overexpression in skeletal muscle. The role of TNF-α in palmitate-induced insulin resistance remained to be elucidated. Here, we assessed effects of TNF-α knockdown on the components of insulin signaling pathway (IRS-1 and Akt) in palmitate-induced insulin resistant C2C12 skeletal muscle cells. To reduce TNF-α expression, C2C12 cells were transduced with TNF-α-shRNA lentiviral particles. Afterwards, the protein expression of TNF-α, IRS-1, and Akt, as well as phosphorylation levels of IRS-1 and Akt were evaluated by western blot. We also measured insulin-stimulated glucose uptake in the presence and absence of palmitate. TNF-α protein expression in C2C12 cells significantly increased by treatment with 0.75 mM palmitate (P < 0.05). In TNF-α knockdown cells, the protein expression level of TNF-α was significantly decreased by almost 70% (P < 0.01) compared with the control cells. Our results also revealed that, in control cells, palmitate treatment significantly reduced the insulin-induced phosphorylations of IRS-1 (Tyr632) and Akt (Ser473) by 60% and 66% (P < 0.01), respectively. Interestingly, these phosphorylations, even in the presence of palmitate, were not significantly reduced in TNF-α knockdown cells with respect to the untreated control cells (P > 0.05). Furthermore, palmitate significantly reduced insulin-dependent glucose uptake in control cells, however, it was not able to reduce insulin-stimulated glucose uptake in TNF-α knockdown cells in comparison with the untreated control cells (P < 0.01). These findings indicated that TNF-α down-regulation maintains insulin sensitivity, even in the presence of palmitate, therefore, TNF-α inhibition could be a good strategy for the treatment of palmitate-induced insulin resistance.
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Affiliation(s)
- Karimeh Haghani
- Department of Clinical Biochemistry, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Somayeh Pashaei
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | - Sanaz Vakili
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Taheripak
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Salar Bakhtiyari
- Department of Clinical Biochemistry, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran.
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28
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Love L, Cline MG. Perioperative physiology and pharmacology in the obese small animal patient. Vet Anaesth Analg 2015; 42:119-32. [DOI: 10.1111/vaa.12219] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 07/02/2014] [Indexed: 01/08/2023]
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Byun SH, Kwon EB, Kim SY. The relationship between serum adiponectin and inflammatory cytokines in obese Korean juveniles. KOREAN JOURNAL OF PEDIATRICS 2015; 57:533-7. [PMID: 25653687 PMCID: PMC4316597 DOI: 10.3345/kjp.2014.57.12.533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 01/26/2012] [Accepted: 05/21/2014] [Indexed: 12/19/2022]
Abstract
PURPOSE Obesity is related to systemic inflammatory processes causing cardiovascular complications. Intercellular adhesion molecule-1 (ICAM-1), CD40 ligand (CD40L), P-selectin are newly described mediators of inflammation and have a significant effect in atherosclerosis. Adiponectin has shown anti-inflammatory effects in adults. The aim of this study was to evaluate the relationship between adiponectin and inflammatory mediators in children and adolescents. METHODS Fifty children or adolescents, twenty two with a body mass index (BMI) over 95th percentile, and twenty eight with a BMI below 75th percentile were included in the study. Serum soluble ICAM-1 (sICAM-1), P-selectin, CD40L, lipid profiles, aspartate aminotransferase, alanine aminotransferase, glucose and insulin were measured to evaluate associations with adiponectin. Comparison of these variables was performed between the obese and the nonobese group. RESULTS We found a adiponectin to be significant lower and sICAM-1 significant higher in the obese group compared to the nonobese group, but there were no significant differences in P-selectin and soluble CD40L. Adiponectin was negatively associated with ICAM-1 and P-selectin in the obese group. CONCLUSION Negative associations of adiponectin with ICAM-1 and P-selectin in obese children and adolescents suggest that serum adiponectin level may represent the inflammatory status.
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Affiliation(s)
- Sung Hwan Byun
- Department of Pediatrics, Bundang Jesaeng Hospital, Seongnam, Korea
| | - Eun Byul Kwon
- Department of Pediatrics, Bundang Jesaeng Hospital, Seongnam, Korea
| | - Se Young Kim
- Department of Pediatrics, Bundang Jesaeng Hospital, Seongnam, Korea
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30
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Hayashikawa Y, Iwata M, Inomata M, Kawagishi Y, Tokui K, Taka C, Kambara K, Okazawa S, Yamada T, Hayashi R, Kamura Y, Okazawa T, Matsui S, Kigawa M, Tobe K. Association of serum adiponectin with asthma and pulmonary function in the Japanese population. Endocr J 2015; 62:695-709. [PMID: 25985757 DOI: 10.1507/endocrj.ej14-0626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Conflicting findings have been reported regarding the role of adiponectin in asthma. The aim of this study was to evaluate the association of adiponectin with pulmonary functions and asthma in the Japanese population. First, among a general population that participated in a previous study (group 1), we selected 329 subjects after excluding those with asthma, chronic obstructive pulmonary disease, and a smoking history and examined the associations of the serum total adiponectin levels with pulmonary functions. In a second cohort (group 2) consisting of 61 asthmatic patients and 175 control non-asthmatic subjects, we examined the associations between asthma and the levels of total, high (HMW), middle (MMW) and low (LMW) molecular weight adiponectin isoforms as well as the ratio of each isoform to total adiponectin level. Although the total adiponectin levels were not significantly different between the asthmatic and control subjects in group 2, the levels were significantly and positively associated with the forced expiratory volume in 1 s after adjustments for confounding factors (P < 0.05) in women in group 1. In group 2, the LMW adiponectin level was significantly higher and the MMW/total adiponectin ratio was significantly lower among the asthmatic subjects than among the control subjects after adjustments for confounding factors in both sexes (P < 0.05). The present study showed that a low total adiponectin level may lead to airway narrowing compatible with asthmatic airways in women, and higher LMW adiponectin levels and lower MMW/total adiponectin ratio are significantly associated with current asthma in both sexes.
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Affiliation(s)
- Yasuko Hayashikawa
- First Department of Internal Medicine, Faculty of Medicine, Toyama University, Toyama 930-0194, Japan
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Adipose tissue cytokines: Relation to glycemic control, insulin resistance and biochemical bone markers in type 2 diabetic Saudi male patients. J Taibah Univ Med Sci 2014. [DOI: 10.1016/j.jtumed.2013.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Colombel JF, Sandborn WJ, Allez M, Dupas JL, Dewit O, D'Haens G, Bouhnik Y, Parker G, Pierre-Louis B, Hébuterne X. Association between plasma concentrations of certolizumab pegol and endoscopic outcomes of patients with Crohn's disease. Clin Gastroenterol Hepatol 2014; 12:423-31.e1. [PMID: 24184736 DOI: 10.1016/j.cgh.2013.10.025] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 10/10/2013] [Accepted: 10/22/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Monitoring plasma concentrations of anti-tumor necrosis factor agents could optimize treatment of patients with Crohn's Disease (CD). In a post hoc analysis of data from a clinical trial, we compared the relationship between plasma concentrations of certolizumab pegol (CZP) and endoscopic and clinical responses and remission with CZP therapy in patients with moderate to severe ileocolonic CD. METHODS We analyzed data from the Endoscopic Mucosal Improvement in Patients with Active CD Treated with CZP trial, from 89 adult patients with active endoscopic CD (ulceration in ≥ 2 intestinal segments and CD Endoscopic Index of Severity [CDEIS] scores of ≥ 8 points). Patients received subcutaneous CZP (400 mg) at weeks 0, 2, and 4 and then every 4 weeks until week 52. Endoscopic evaluations were performed at weeks 0, 10, and 54. Blood samples were collected to measure CZP plasma concentrations at weeks 8 and 54. CZP quartiles at weeks 8 (n = 80) and 54 (n = 45) were correlated with endoscopic response (>5-point decrease in CDEIS from baseline) and remission (CDEIS, <6) at weeks 10 and 54, respectively. RESULTS Higher concentrations of CZP at week 8 were associated with endoscopic response (P = .0016) and remission (P = .0302) at week 10 (n = 45). At week 54, the rates of endoscopic remission correlated with plasma concentrations of CZP (P = .0206). There was a significant inverse relationship between plasma concentrations of CZP and baseline levels of C-reactive protein and body weight (P = .0014 and P = .0373, respectively). CONCLUSIONS Endoscopic response and remission are associated with higher plasma concentrations of CZP in patients with moderate to severe ileocolonic CD. These results support the need to consider the pharmacokinetics of anti-tumor necrosis factor agents and therapeutic drug monitoring to optimize treatment. Clinicaltrials.gov Number, NCT00297648.
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Affiliation(s)
| | | | - Matthieu Allez
- Saint-Louis Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Olivier Dewit
- Université Catholique de Louvain Saint Luc, Brussels, Belgium
| | | | - Yoram Bouhnik
- Beaujon Hospital, Assistance Publique-Hôpitaux de Paris, Clichy, France
| | | | | | - Xavier Hébuterne
- Centre Hospitalier Universitaire Nice, Nice, France; University of Nice Sophia Antipolis, Nice, France
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Santangelo C, Varì R, Scazzocchio B, Filesi C, Masella R. Management of reproduction and pregnancy complications in maternal obesity: which role for dietary polyphenols? Biofactors 2014; 40:79-102. [PMID: 23983164 DOI: 10.1002/biof.1126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/28/2013] [Accepted: 07/02/2013] [Indexed: 02/06/2023]
Abstract
Obesity is a global and dramatic public health problem; maternal obesity represents one of the main risk factors of infertility and pregnancy complications as it is associated with adverse maternal and offspring outcomes. In the last few years, adipose tissue dysfunction associated with altered adipocytokine secretion has been suggested to play a critical role in all the phases of reproductive process. Obesity is a nutrition-related disorder. In this regard, dietary intervention strategies, such as high intake of fruit and vegetables, have shown significant effects in both preserving health and counteracting obesity-associated diseases. Evidence has been provided that polyphenols, important constituents of plant-derived food, can influence developmental program of oocyte and embryo, as well as pregnancy progression by modulating several cellular pathways. This review will examine the controversial results so far obtained on adipocytokine involvement in fertility impairment and pregnancy complications. Furthermore, the different effects exerted by polyphenols on oocyte, embryo, and pregnancy development will be also taken in account.
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Affiliation(s)
- Carmela Santangelo
- Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
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Zhang H, Sairam MR. Sex hormone imbalances and adipose tissue dysfunction impacting on metabolic syndrome; a paradigm for the discovery of novel adipokines. Horm Mol Biol Clin Investig 2014; 17:89-97. [DOI: 10.1515/hmbci-2014-0002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 02/24/2014] [Indexed: 01/13/2023]
Abstract
AbstractSex hormone imbalance is causally related with visceral adipose tissue (AT) dysfunction and visceral obesity – an etiological component of metabolic syndrome (MetS), associated with high risk of both cardiovascular disease (CVD) and type 2 diabetes. In general, premenopausal women appear to be protected from CVD and the dramatic decline in sex steroid hormone occurring during menopausal transitions or other sex-related disorders influence the regional distribution, function, and metabolism of AT and increase the risk of CVD. Visceral AT dysfunction, manifesting as abnormality of fatty acid metabolism, increased oxidative stress, endothelial dysfunction, and excessive production of adipokines have been proposed in the pathogenesis of MetS. However, direct evidence of molecular mechanisms of depot-specific AT alterations, and dysfunction causally related to MetS is limited in studies on postmenopausal women due to difficulty in collecting discrete AT specimens at different ages and repeated sampling from different fat depots. This can be overcome using animal models that can mimic the cluster of pathology leading to MetS and help establish the molecular basis of links between loss of gonadal function on various AT depots and their contribution to MetS. Our group used sex hormone imbalance FSH receptor knock out (FORKO) female mice to recapitulate different aspects of the MetS and addressed the mechanism of visceral obesity related to MetS and discover two novel sex steroid hormone-regulated deep mesenteric estrogen-dependent adipose (MEDAs) genes. Taken together, such recent studies raise hopes for pharmacologic intervention strategies targeting sex steroid hormone signaling in AT to provide protection against AT dysfunction.
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Antiobesity Effects of an Edible Halophyte Nitraria retusa Forssk in 3T3-L1 Preadipocyte Differentiation and in C57B6J/L Mice Fed a High Fat Diet-Induced Obesity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:368658. [PMID: 24367387 PMCID: PMC3866713 DOI: 10.1155/2013/368658] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 10/22/2013] [Accepted: 11/12/2013] [Indexed: 12/27/2022]
Abstract
Nitraria retusa is an edible halophyte, used in Tunisia for several traditional medicine purposes. The present study investigated the antiobesity effects of Nitraria retusa ethanol extract (NRE) in 3T3-L1 cells using different doses and in high-fat diet-induced obesity in mice. Male C57B6J/L mice were separately fed a normal diet (ND) or a high-fat diet (HFD) and daily administrated with NRE (50, 100 mg/kg) or one for 2 days with Naringenin (10 mg/kg). NRE administration significantly decreased body weight gain, fat pad weight, serum glucose, and lipid levels in HFD-induced obese mice. To elucidate the mechanism of action of NRE, the expression of genes involved in lipid and carbohydrate metabolism were measured in liver. Results showed that mice treated with NRE demonstrated a significant decrease in cumulative body weight and fat pad weight, a significant lowering in glucose and triglycerides serum levels, and an increase in the HDL-cholesterol serum level. Moreover mRNA expression results showed an enhancement of the expression of genes related to liver metabolism. Our findings suggest that NRE treatment had a protective or controlling effect against a high fat diet-induced obesity in C57B6J/L mice through the regulation of expression of genes involved in lipolysis and lipogenesis and thus the enhancement of the lipid metabolism in liver.
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Fjeldborg K, Christiansen T, Bennetzen M, J Møller H, Pedersen SB, Richelsen B. The macrophage-specific serum marker, soluble CD163, is increased in obesity and reduced after dietary-induced weight loss. Obesity (Silver Spring) 2013; 21:2437-43. [PMID: 23512476 DOI: 10.1002/oby.20376] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 12/26/2012] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Soluble CD163 (sCD163) is a new macrophage-specific serum marker elevated in inflammatory conditions. sCD163 is elevated in obesity and found to be a strong predictor of the development of type 2 diabetes. We investigated whether dietary intervention and moderate exercise was related to changes in sCD163 and how sCD163 is associated to insulin resistance in obesity. DESIGN AND METHODS Ninety-six obese subjects were enrolled: 62 followed a very low energy diet (VLED) program for 8 weeks followed by 3-4 weeks of weight stabilization, 20 followed a moderate exercise program for 12 weeks, and 14 were included without any intervention. Fasting blood samples and anthropometric measures were taken at baseline and after intervention. Thirty-six lean subjects were included in a control group. RESULTS sCD163 was significantly higher in obese subjects (2.3 ± 1.0 mg/l) compared with lean (1.6 ± 0.4 mg/l, P < 0.001). Weight loss (11%) induced by VLED resulted in a reduction and partial normalization of sCD163 to 2.0 ± 0.9 mg/l (P < 0.001). Exercise for 12 weeks had no effect on sCD163. At baseline, sCD163 was significantly correlated with BMI (r = 0.46), waist circumference (r = 0.40), insulin resistance measured by the homeostasis model assessment (HOMA-IR; r = 0.41; all P < 0.001), and the leptin-to-adiponectin ratio (r = 0.28, P < 0.05). In a multivariate linear regression analysis with various inflammatory markers, sCD163 (β = 0.25), adiponectin (β = -0.24), and high sensitivity C-reactive protein (hs-CRP; β = 0.20) remained independently and significantly associated to HOMA-IR (all P < 0.05). After further adjustment for waist circumference, only sCD163 was associated with HOMA-IR (P < 0.05). CONCLUSION The macrophage-specific serum marker sCD163 is increased in obesity and partially normalized by dietary-induced weight loss but not by moderate exercise. Furthermore, we confirm that sCD163 is a good marker for obesity-related insulin resistance.
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Affiliation(s)
- Karen Fjeldborg
- Department of Medicine and Endocrinology (MEA), Aarhus University Hospital, Aarhus, Denmark
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A high-fat diet enriched with low omega-6 to omega-3 fatty acid ratio reduced fat cellularity and plasma leptin concentration in Sprague-Dawley rats. ScientificWorldJournal 2013; 2013:757593. [PMID: 24294136 PMCID: PMC3833013 DOI: 10.1155/2013/757593] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 09/08/2013] [Indexed: 01/19/2023] Open
Abstract
This study was aimed to investigate the effects of dietary fatty acids on the accretion pattern of major fat pads, inguinal fat cellularity, and their relation with plasma leptin concentration. Forty Sprague-Dawley rats were randomly assigned into four groups and received the following diets for 22 weeks: (1) standard rat chow diet (CTRL), (2) CTRL + 10% (w/w) butter (HFAR), (3) CTRL + 3.33% (w/w) menhaden fish oil + 6.67% (w/w) soybean oil (MFAR), and (4) CTRL + 6.67% (w/w) menhaden fish oil + 3.33% (w/w) soybean oil (LFAR). Inguinal fat cellularity and plasma leptin concentration were measured in this study. Results for inguinal fat cellularity showed that the mean adipocyte number for the MFAR (9.2 ∗ 105 ± 3.6) and LFAR (8.5 ∗ 105 ± 5.1) groups was significantly higher (P < 0.05) than the rest, while the mean adipocyte diameter of HFAR group was larger (P < 0.05) (46.2 ± 2.8) than the rest. The plasma leptin concentration in the HFAR group was higher (P < 0.05) (3.22 ± 0.32 ng/mL), than the other groups. The higher inguinal fat cellularity clearly indicated the ability of the polyunsaturated fatty acids (PUFA) and butter supplemented diets to induce hyperplasia and hypertrophy of fat cells, respectively, which caused adipocyte remodeling due to hyperleptinemia.
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Obesity and the Endometrium: Adipocyte-Secreted Proinflammatory TNF α Cytokine Enhances the Proliferation of Human Endometrial Glandular Cells. Obstet Gynecol Int 2013; 2013:368543. [PMID: 24288542 PMCID: PMC3832969 DOI: 10.1155/2013/368543] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 09/22/2013] [Indexed: 11/18/2022] Open
Abstract
Obesity, a state of chronic inflammation, is associated with poor fertility and low implantation rates and is a well-documented risk factor for endometrial cancer. Adipokines, such as tumor necrosis factor alpha, play an important role in initiation of endometrial cancer. The aim of this study is to evaluate in vitro effects of human adipocyte cells (SW872) on growth of endometrial glandular epithelial cells (EGE). Methods. We measured cell proliferation and expression of cell-growth proteins—proliferating cell nuclear antigen, cyclin D1, cyclin-dependent kinase-1, and apoptotic markers (BCL-2 and BAK) in human EGE cells cocultured with SW872 cells. EGE cells were also evaluated in SW872-conditioned media neutralized with anti-TNFα antibody. Results. A significant increase in EGE cell proliferation was observed in both SW872-conditioned media and in coculture (P < 0.05). We observed an upregulation of proliferation markers PCNA, cyclin D1, CDK-1, and BCL-2 and decrease in BAK (P < 0.05). Neutralization of SW872-conditioned media using anti-TNFα antibodies reversed EGE cell proliferation as indicated by BCL-2 expression. Conclusions. Adipocytes have potent proliferative paracrine effect on EGE cells which may be, in part, mediated via TNFα. Further understanding of the role of obesity in endometrial carcinogenesis should lead to better preventative and therapeutic strategies.
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Nokhbehsaim M, Keser S, Jäger A, Jepsen S, Deschner J. Regulation of regenerative periodontal healing by NAMPT. Mediators Inflamm 2013; 2013:202530. [PMID: 24288440 PMCID: PMC3830893 DOI: 10.1155/2013/202530] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/30/2013] [Accepted: 09/13/2013] [Indexed: 12/22/2022] Open
Abstract
Periodontitis is an inflammatory disease characterized by destruction of the tooth-supporting tissues. Obese individuals have an increased risk of periodontitis, and elevated circulating levels of nicotinamide phosphoribosyltransferase (NAMPT) may be a pathomechanistic link between both diseases. Recently, increased levels of NAMPT have also been found in patients with periodontitis, irrespective of the presence of obesity. This in vitro study sought to examine the effects of NAMPT on the regenerative capacity of human periodontal ligament (PDL) cells and, thereby, periodontal healing. PDL cells treated with enamel matrix derivative (EMD), which was used to mimic regenerative healing conditions in vitro, were grown in the presence and absence of NAMPT for up to 14 d. EMD stimulated significantly (P < 0.05) the expression of growth factors and their receptors, matrix molecules, osteogenesis-associated factors, and wound closure and calcium accumulation. In the presence of NAMPT, all these stimulatory effects were significantly (P < 0.05) reduced. In conclusion, the beneficial effects of EMD on a number of PDL cell functions critical for periodontal regeneration are counteracted by NAMPT. Enhanced levels of NAMPT, as found in obesity and periodontal inflammation, may compromise the regenerative capacity of PDL cells and, thereby, periodontal healing in the presence of EMD.
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Affiliation(s)
- Marjan Nokhbehsaim
- Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstraße 17, 53111 Bonn, Germany
| | - Sema Keser
- Clinical Research Unit 208, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstraße 17, 53111 Bonn, Germany
| | - Andreas Jäger
- Clinical Research Unit 208, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstraße 17, 53111 Bonn, Germany
- Department of Orthodontics, University of Bonn, 53111 Bonn, Germany
| | - Søren Jepsen
- Clinical Research Unit 208, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstraße 17, 53111 Bonn, Germany
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, 53111 Bonn, Germany
| | - James Deschner
- Experimental Dento-Maxillo-Facial Medicine, Center of Dento-Maxillo-Facial Medicine, University of Bonn, 53111 Bonn, Germany
- Clinical Research Unit 208, Center of Dento-Maxillo-Facial Medicine, University of Bonn, Welschnonnenstraße 17, 53111 Bonn, Germany
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Hoenig M, Pach N, Thomaseth K, Le A, Schaeffer D, Ferguson DC. Cats differ from other species in their cytokine and antioxidant enzyme response when developing obesity. Obesity (Silver Spring) 2013; 21:E407-14. [PMID: 23408676 DOI: 10.1002/oby.20306] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 12/04/2012] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Obese cats show many similarities to obese people, including insulin resistance and an increased diabetes risk. However, atherosclerosis and cardiovascular disease are not seen in cats. In people, they are associated with the development of an inflammatory response, which, we hypothesized, does not occur in cats. DESIGN AND METHODS Twenty neutered cats of equal gender distribution were allowed to gain weight by offering food ad libitum and were examined before and at 10, 30, 60, and 100% weight gain. All cats reached 60% of weight gain, 12 cats gained 100% in 12 months. RESULTS Fat was equally distributed between subcutaneous and visceral depots. Insulin-independent glucose uptake increased and insulin sensitivity decreased with increasing adiposity. However, baseline glucose concentrations were unchanged suggesting a decrease in EGP. Inflammatory cytokines (Il-1, IL-6, TNFa) and catalase, superoxide dismutase, glutathione peroxidase did not change. Insulin, proinsulin, and leptin were positively and adiponectin negatively correlated with adiposity. Heat production increased with obesity, but became less when body weight gain was > 60%. CONCLUSIONS This indicates that metabolism adapts more appropriately to the higher intake of calories in the initial phase of obesity but slows at higher body fat content. This likely contributes to the difficulty to lose weight.
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Affiliation(s)
- Margarethe Hoenig
- Department of Veterinary Clinical Medicine, University of Illinois College of Veterinary Medicine, Urbana-Champaign, Illinois, USA
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JOCHMANOVÁ I, HABALOVÁ V, WAGNEROVÁ H, GALOVIČOVÁ A, LAZÚROVÁ I. T45G and G276T Adiponectin Gene Polymorphisms in Primary Aldosteronism and Healthy Controls in an East Slovak Population. Physiol Res 2013; 62:413-20. [DOI: 10.33549/physiolres.932452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Metabolic complications are frequent in primary aldosteronism (PA) and adiponectin gene polymorphisms seem to confer a genetic risk for metabolic alterations. Aim of the study was to evaluate the prevalence of metabolic symptoms in patients with PA compared to controls and the prevalence of two single nucleotide polymorphisms (SNPs), T45G and G276T, in the adiponectin gene and their relationship to metabolic syndrome (MS). The study involved 47 patients with PA and 90 controls selected from general population. Body mass index (BMI), and selected biochemical parametres were examined, and the mentioned SNPs were genotyped in all subjects. PA patients had a significantly higher BMI (p0.0001), blood glucose level (p0.01), and triglycerides (p0.0005) compared to controls. There were no significant differences in the prevalence of the studied genotypes of adiponectin gene polymorphisms. The 276GT genotype was linked with lower levels of triglycerides (p≤0.05), while 276GG was related to higher levels of triglycerides (p=0.01). A similar but non-significant tendency was observed in relation to cholesterol levels. We can conclude that PA patients with the 276GT genotype have lower triglycerides levels, but there are not significant differences in the distribution of genotypes and alleles among PA patients and controls in an East Slovak population.
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Affiliation(s)
| | | | | | | | - I. LAZÚROVÁ
- First Department of Internal Medicine, Medical Faculty, P. J. Šafárik University Košice, Slovakia
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Samartzis D, Karppinen J, Cheung JPY, Lotz J. Disk degeneration and low back pain: are they fat-related conditions? Global Spine J 2013; 3:133-44. [PMID: 24436864 PMCID: PMC3854598 DOI: 10.1055/s-0033-1350054] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 06/05/2013] [Indexed: 01/30/2023] Open
Abstract
Low back pain (LBP) is the world's most debilitating condition. Disk degeneration has been regarded as a strong determinant associated with LBP. Overweight and obesity are public health concerns that affect every population worldwide and whose prevalence continues to rise. Studies have indicated strong associations between overweight/obesity and disk degeneration as well as with LBP. This broad narrative review article addresses the various mechanisms that may be involved leading to disk degeneration and/or LBP in the setting of overweight/obesity. In particular, our goal is to raise awareness of the role of fat cells and their involvement via altered metabolism or the release of adipokines as well as other pathways that may lead to the development of disk degeneration and LBP. Understanding the role of fat in this process may aid in the development of novel biological therapies and technologies to halt the progression or regenerate the disk. Moreover, with genetic advancements and the appreciation of genetic epidemiology, a more personalized approach to spine care may have to consider the role of fat in any preventative, therapeutic, and/or prognosis modalities toward the disk and LBP.
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Affiliation(s)
- Dino Samartzis
- Department of Orthopaedics and Traumatology, University of Hong Kong, Hong Kong, SAR, China
| | - Jaro Karppinen
- Department of Physical and Rehabilitation Medicine, Institute of Clinical Medicine, University of Oulu, and Medical Research Center Oulu, Oulu, Finland
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, University of Hong Kong, Hong Kong, SAR, China
| | - Jeffrey Lotz
- Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, California, United States
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Lai X, Zhang C, Wang J, Wang C, Lan X, Zhang C, Lei C, Chen H. mRNA expression pattern and association study with growth traits of bovine vaspin gene. Mol Biol Rep 2013; 40:4499-505. [PMID: 23657594 DOI: 10.1007/s11033-013-2542-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 04/29/2013] [Indexed: 02/01/2023]
Abstract
Visceral adipose tissue-derived serine protease inhibitor (vaspin) is an interesting novel adipocytokine with insulin-sensitizing effects. Some studies have suggested that vaspin could play an important role in the development of obesity and metabolic disorders. However, the tissue expression patterns in cattle and impact of vaspin gene variants on the growth traits has not been determined yet. Herein, we firstly investigated the tissue expression patterns of vaspin gene in new born and adult cattle. The results showed that vaspin was ubiquitously expressed in most tissues and strongly expressed in the heart, skeletal muscle and fat. Then, genetic variants within bovine vaspin gene were screened in 1235 individuals from five Chinese indigenous cattle breeds. Two novel mutations in coding region (NW_001494061: g.1124477 G>A and g.1118561 T>C) of bovine vaspin gene were identified using MspI PCR-RFLP and HhaI ACRS PCR-RFLP detection. Association analysis revealed both two mutations were significantly associated with bodyweight and chest girth at 24 months in cattle (P < 0.05). Therefore, the MspI and HhaI genetic variants of bovine vaspin gene were recommended as DNA markers related to growth traits through marker-assisted selection for genetics and breeding in cattle.
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Affiliation(s)
- Xinsheng Lai
- College of Animal Science and Technology, Northwest A&F University, No. 22 Xinong Road, Yangling, Shaanxi, 712100, People's Republic of China.
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A consideration of biomarkers to be used for evaluation of inflammation in human nutritional studies. Br J Nutr 2013; 109 Suppl 1:S1-34. [PMID: 23343744 DOI: 10.1017/s0007114512005119] [Citation(s) in RCA: 250] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
To monitor inflammation in a meaningful way, the markers used must be valid: they must reflect the inflammatory process under study and they must be predictive of future health status. In 2009, the Nutrition and Immunity Task Force of the International Life Sciences Institute, European Branch, organized an expert group to attempt to identify robust and predictive markers, or patterns or clusters of markers, which can be used to assess inflammation in human nutrition studies in the general population. Inflammation is a normal process and there are a number of cells and mediators involved. These markers are involved in, or are produced as a result of, the inflammatory process irrespective of its trigger and its location and are common to all inflammatory situations. Currently, there is no consensus as to which markers of inflammation best represent low-grade inflammation or differentiate between acute and chronic inflammation or between the various phases of inflammatory responses. There are a number of modifying factors that affect the concentration of an inflammatory marker at a given time, including age, diet and body fatness, among others. Measuring the concentration of inflammatory markers in the bloodstream under basal conditions is probably less informative compared with data related to the concentration change in response to a challenge. A number of inflammatory challenges have been described. However, many of these challenges are poorly standardised. Patterns and clusters may be important as robust biomarkers of inflammation. Therefore, it is likely that a combination of multiple inflammatory markers and integrated readouts based upon kinetic analysis following defined challenges will be the most informative biomarker of inflammation.
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Nogueira AVB, Nokhbehsaim M, Eick S, Bourauel C, Jäger A, Jepsen S, Cirelli JA, Deschner J. Regulation of visfatin by microbial and biomechanical signals in PDL cells. Clin Oral Investig 2013; 18:171-8. [PMID: 23404558 DOI: 10.1007/s00784-013-0935-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 01/28/2013] [Indexed: 12/30/2022]
Abstract
OBJECTIVES This in vitro study was established to examine whether visfatin thought to be a link between periodontitis and obesity is produced by periodontal ligament (PDL) cells and, if so, whether its synthesis is modulated by microbial and/or biomechanical signals. MATERIALS AND METHODS PDL cells seeded on BioFlex® plates were exposed to the oral pathogen Fusobacterium nucleatum ATCC 25586 and/or subjected to biomechanical strain for up to 3 days. Gene expression of visfatin and toll-like receptors (TLR) 2 and 4 was analyzed by RT-PCR, visfatin protein synthesis by ELISA and immunocytochemistry, and NFκB nuclear translocation by immunofluorescence. RESULTS F. nucleatum upregulated the visfatin expression in a dose- and time-dependent fashion. Preincubation with neutralizing antibodies against TLR2 and TLR4 caused a significant inhibition of the F. nucleatum-upregulated visfatin expression at 1 day. F. nucleatum stimulated the NFκB nuclear translocation. Biomechanical loading reduced the stimulatory effects of F. nucleatum on visfatin expression at 1 and 3 days and also abrogated the F. nucleatum-induced NFκB nuclear translocation at 60 min. Biomechanical loading inhibited significantly the expression of TLR2 and TLR4 at 3 days. The regulatory effects of F. nucleatum and/or biomechanical loading on visfatin expression were also observed at protein level. CONCLUSIONS PDL cells produce visfatin, and this production is enhanced by F. nucleatum. Biomechanical loading seems to be protective against the effects of F. nucleatum on visfatin expression. CLINICAL RELEVANCE Visfatin produced by periodontal tissues could play a major role in the pathogenesis of periodontitis and the interactions with obesity and other systemic diseases.
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Affiliation(s)
- Andressa Vilas Boas Nogueira
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Univ Estadual Paulista -- UNESP, Araraquara, Brazil
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ARAI C, MIYAKE M, MATSUMOTO Y, MIZOTE A, YOSHIZANE C, HANAYA Y, KOIDE K, YAMADA M, HANAYA T, ARAI S, FUKUDA S. Trehalose Prevents Adipocyte Hypertrophy and Mitigates Insulin Resistance in Mice with Established Obesity. J Nutr Sci Vitaminol (Tokyo) 2013; 59:393-401. [DOI: 10.3177/jnsv.59.393] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Boumaiza I, Omezzine A, Rejeb J, Rebhi L, Ben Rejeb N, Nabli N, Ben Abdelaziz A, Bouslama A. Association between four resistin polymorphisms, obesity, and metabolic syndrome parameters in Tunisian volunteers. Genet Test Mol Biomarkers 2012; 16:1356-62. [PMID: 23020084 DOI: 10.1089/gtmb.2012.0156] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Resistin is an adipocyte-secreted cytokine recently discovered and has been proposed as a link between obesity and diabetes. Many resistin gene polymorphisms were described and their implication in obesity and metabolic syndrome (MetS) was controversial. Our aim was to study the relationship between four resistin polymorphisms (420C/G, 44G/A, 62G/A, and 394C/G), MetS parameters, and the risk of obesity in Tunisian volunteers. We recruited 169 nonobese (sex ratio=0.594; mean age=43.25±13.12 years; mean body mass index [BMI]=24.73±3.50 kg/m(2)) and 160 obese subjects (sex ratio=0.221; mean age=48.41±10.92 years; mean BMI=36.6±4.8 kg/m(2)). Genotyping was performed using polymerase chain reaction-restriction fragment length polymorphism. Anthropometric parameters, lipid levels, glycemia, and insulinemia were measured. BMI was calculated and insulin resistance was evaluated with the homeostasis model assessment insulin resistance (HOMA-IR). Statistical analyses were performed by SPSS 17.0. The 420C/G seems to contribute to obesity. In fact adjusted odds ratio (OR) of obesity associated to mutated genotypes was 2.17 and 95% confidence interval was 1.28-3.68 (p=0.004). Mutated genotypes at 420C/G were associated with higher waist circumference and BMI. In addition, 44G/A polymorphism was associated with increased total cholesterol and low-density lipoprotein-cholesterol levels. The other genotypes showed no association with MetS parameters. Concerning association between single-nucleotide polymorphisms and MetS risk, only mutated genotypes at 44G/A increase the risk of MetS after adjustment to confounding parameters (OR=1.93, p=0.023). In conclusion, resistin gene polymorphisms 420C/G and 44G/A were associated with obesity and MetS parameters in Tunisian volunteers.
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Affiliation(s)
- Imen Boumaiza
- Biochemistry Department, UR MSP 28/04, Sahloul University Hospital, Sousse, Tunisia
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Nair S, Al-Hendy A. Adipocytes enhance the proliferation of human leiomyoma cells via TNF-α proinflammatory cytokine. Reprod Sci 2012; 18:1186-92. [PMID: 22096007 DOI: 10.1177/1933719111408111] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Obesity is a well-documented risk factor for uterine leiomyoma with a major impact on women health and health care system of the nation. Obesity is associated with increased secretion of adipokines that significantly influence growth and proliferation of tumor stroma and malignant cells. Adipokines, such as tumor necrosis factor α (TNF-α), are produced in the adipose tissue with concomitant expression in other organs and tissues. Increased and sustained cytokine production is associated with alterations in cell growth and differentiation. We, therefore, explored the influence of human adipocytes (SW872 cells)-mediated biological humoral factors on human uterine leiomyoma (HuLM) cells. METHODS We measured cell proliferation and expression of cell-proliferating proteins (proliferating cell nuclear antigen [PCNA], cyclin D1, and B-cell lymphoma 2 [BCL-2]) in human leiomyoma cells cocultured with SW872 cells. SW872-conditioned media was neutralized for TNF-α and proliferation of HuLM cells was observed along with antiapoptotic marker, BCL-2, using Western immunoblot. RESULTS We found that both SW872-conditioned media and coculture with SW872 cells increased HuLM cell proliferation significantly (P < .05). We determined that this effect was associated with the upregulation of specific markers for proliferation, such as PCNA, cyclin D1, and BCL-2 (P < .05). Furthermore, the addition of neutralizing antibodies, anti-TNF-α, to SW872-conditioned media reversed the proliferation of leiomyoma cells and induced apoptosis as indicated by the reduced expression of antiapoptotic marker BCL-2. CONCLUSIONS SW872 cells secrete TNF-α, which is associated with a proliferative gene profile in HuLM cells and may play a role in initiation and/or progression of uterine leiomyoma.
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Affiliation(s)
- Sangeeta Nair
- Department of Obstetrics and Gynecology, Center for Women's Health Research, Meharry Medical College, Nashville, TN 37208, USA
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Kraus D, Winter J, Jepsen S, Jäger A, Meyer R, Deschner J. Interactions of adiponectin and lipopolysaccharide from Porphyromonas gingivalis on human oral epithelial cells. PLoS One 2012; 7:e30716. [PMID: 22319581 PMCID: PMC3271106 DOI: 10.1371/journal.pone.0030716] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 12/20/2011] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Periodontitis is an inflammatory disease caused by pathogenic microorganisms, such as Porphyromonas gingivalis, and characterized by the destruction of the periodontium. Obese individuals have an increased risk for periodontitis and show decreased serum levels of adiponectin. This in-vitro study was established to examine whether adiponectin modulates critical effects of lipopolysaccharide (LPS) from P. gingivalis on oral epithelial cells (OECs). METHODOLOGY/PRINCIPAL FINDINGS The presence of adiponectin and its receptors in human gingival tissue samples and OECs was analyzed by immunohistochemistry and PCR. Furthermore, OECs were treated with LPS and/or adiponectin for up to 72 h, and the gene expression and protein synthesis of pro- and anti-inflammatory mediators, matrix metalloproteinases (MMPs) and growth factors were analyzed by real-time PCR and ELISA. Additionally, cell proliferation, differentiation and in-vitro wound healing were studied. The nuclear translocation of NFκB was investigated by immunofluorescence. Gingival tissue sections showed a strong synthesis of adiponectin and its receptors in the epithelial layer. In cell cultures, LPS induced a significant up-regulation of interleukin (IL) 1β, IL6, IL8, MMP1 and MMP3. Adiponectin abrogated significantly the stimulatory effects of LPS on these molecules. Similarly, adiponectin inhibited significantly the LPS-induced decrease in cell viability and increase in cell proliferation and differentiation. Adiponectin led to a time-dependent induction of the anti-inflammatory mediators IL10 and heme oxygenase 1, and blocked the LPS-stimulated NFκB nuclear translocation. CONCLUSIONS/SIGNIFICANCE Adiponectin may counteract critical actions of P. gingivalis on oral epithelial cells. Low levels of adiponectin, as observed in obese individuals, may increase the risk for periodontal inflammation and destruction.
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Affiliation(s)
- Dominik Kraus
- Department of Prosthodontics, Preclinical Education, and Material Sciences, University of Bonn, Bonn, Germany
- Clinical Research Unit 208, University of Bonn, Bonn, Germany
| | - Jochen Winter
- Clinical Research Unit 208, University of Bonn, Bonn, Germany
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - Søren Jepsen
- Clinical Research Unit 208, University of Bonn, Bonn, Germany
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - Andreas Jäger
- Clinical Research Unit 208, University of Bonn, Bonn, Germany
- Department of Orthodontics, University of Bonn, Bonn, Germany
| | - Rainer Meyer
- Institute of Physiology II, University of Bonn, Bonn, Germany
| | - James Deschner
- Clinical Research Unit 208, University of Bonn, Bonn, Germany
- Experimental Dento-Maxillo-Facial Medicine, University of Bonn, Bonn, Germany
- * E-mail:
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Wang Y. Small lipid-binding proteins in regulating endothelial and vascular functions: focusing on adipocyte fatty acid binding protein and lipocalin-2. Br J Pharmacol 2012; 165:603-21. [PMID: 21658023 PMCID: PMC3315034 DOI: 10.1111/j.1476-5381.2011.01528.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 05/26/2011] [Accepted: 05/31/2011] [Indexed: 12/13/2022] Open
Abstract
UNLABELLED Dysregulated production of adipokines from adipose tissue plays a critical role in the development of obesity-associated cardiovascular abnormalities. A group of adipokines, including adipocyte fatty acid binding protein (A-FABP) and lipocalin-2, possess specific lipid-binding activity and are up-regulated in obese human subjects and animal models. They act as lipid chaperones to promote lipotoxicity in endothelial cells and cause endothelial dysfunction under obese conditions. However, different small lipid-binding proteins modulate the development of vascular complications in distinctive manners, which are partly attributed to their specialized structural features and functionalities. By focusing on A-FABP and lipocalin-2, this review summarizes recent advances demonstrating the causative roles of these newly identified adipose tissue-derived lipid chaperones in obesity-related endothelial dysfunction and cardiovascular complications. The specific lipid-signalling mechanisms mediated by these two proteins are highlighted to support their specialized functions. In summary, A-FABP and lipocalin-2 represent potential therapeutic targets to design drugs for preventing vascular diseases associated with obesity. LINKED ARTICLES This article is part of a themed section on Fat and Vascular Responsiveness. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.165.issue-3.
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Affiliation(s)
- Yu Wang
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong.
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