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Anwar MM, Pérez-Martínez L, Pedraza-Alva G. Exploring the Significance of Microglial Phenotypes and Morphological Diversity in Neuroinflammation and Neurodegenerative Diseases: From Mechanisms to Potential Therapeutic Targets. Immunol Invest 2024:1-56. [PMID: 38836373 DOI: 10.1080/08820139.2024.2358446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Studying various microglial phenotypes and their functions in neurodegenerative diseases is crucial due to the intricate nature of their phenomics and their vital immunological role. Microglia undergo substantial phenomic changes, encompassing morphological, transcriptional, and functional aspects, resulting in distinct cell types with diverse structures, functions, properties, and implications. The traditional classification of microglia as ramified, M1 (proinflammatory), or M2 (anti-inflammatory) phenotypes is overly simplistic, failing to capture the wide range of recently identified microglial phenotypes in various brain regions affected by neurodegenerative diseases. Altered and activated microglial phenotypes deviating from the typical ramified structure are significant features of many neurodegenerative conditions. Understanding the precise role of each microglial phenotype is intricate and sometimes contradictory. This review specifically focuses on elucidating recent modifications in microglial phenotypes within neurodegenerative diseases. Recognizing the heterogeneity of microglial phenotypes in diseased states can unveil novel therapeutic strategies for targeting microglia in neurodegenerative diseases. Moreover, the exploration of the use of healthy isolated microglia to mitigate disease progression has provided an innovative perspective. In conclusion, this review discusses the dynamic landscape of mysterious microglial phenotypes, emphasizing the need for a nuanced understanding to pave the way for innovative therapeutic strategies for neurodegenerative diseases.
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Affiliation(s)
- Mai M Anwar
- Department of Biochemistry, National Organization for Drug Control and Research (NODCAR)/Egyptian Drug Authority (EDA), Cairo, Egypt
| | - Leonor Pérez-Martínez
- Neuroimmunobiology Laboratory, Department of Molecular Medicine and Bioprocesses, Institute of Biotechnology, National Autonomous University of Mexico, Cuernavaca, Morelos, Mexico
| | - Gustavo Pedraza-Alva
- Neuroimmunobiology Laboratory, Department of Molecular Medicine and Bioprocesses, Institute of Biotechnology, National Autonomous University of Mexico, Cuernavaca, Morelos, Mexico
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Ferhi H, Magtouf E, Attia A, Durand S, Boyas S, Beaune B, Chortane SG, Maktouf W. Does Obesity Affect the Rate of Force Development in Plantar Flexor Muscles among Older Adults? Sports (Basel) 2024; 12:89. [PMID: 38668557 PMCID: PMC11054987 DOI: 10.3390/sports12040089] [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: 02/21/2024] [Revised: 03/16/2024] [Accepted: 03/21/2024] [Indexed: 04/29/2024] Open
Abstract
The literature offers limited information on the effect of obesity on the rate of force development (RFD), a critical parameter for mobility in older adults. The objectives of this study were to explore the influence of obesity on the RFD in older adults and to examine the association between this neuromuscular parameter and walking speed. The participants (42 older adults) were classified into two groups: the control group (CG, n = 22; mean age = 81.13 ± 4.02 years; body mass index (BMI) = 25.13 ± 3.35 kg/m2), and the obese group (OG, n = 20; mean age = 77.71 ± 2.95 years; BMI = 34.46 ± 3.25 kg/m2). Walking speed (m/s) was measured using the 10 m walking test. Neuromuscular parameters of the plantar flexors were evaluated during a maximal voluntary contraction test using a dynamometer. The RFD was calculated from the linear slop of the force-time curve in the following two phases: from the onset of the contraction to 50 ms (RFD0-50) and from 100 to 200 ms (RFD100-200). The gait speed was lower in the OG compared to the CG (p < 0.001). The RFD50/100 and RFD100/200 were lower in the OG compared to the CG (p < 0.001). The RFD50/100 was found to be the predominant influencer on gait speed in the OG. In conclusion, obesity negatively impacts the RFD in older adults and RFD stands out as the primary factor among the studied parameters influencing gait speed.
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Affiliation(s)
- Hamza Ferhi
- Research Laboratory (LR23JS01) Sport Performance, Health & Society, Higher Institute of Sport and Physical Education of Ksar Saîd, University of La Manouba, Tunis 2010, Tunisia; (H.F.); (E.M.); (A.A.); (S.G.C.)
| | - Elmoetez Magtouf
- Research Laboratory (LR23JS01) Sport Performance, Health & Society, Higher Institute of Sport and Physical Education of Ksar Saîd, University of La Manouba, Tunis 2010, Tunisia; (H.F.); (E.M.); (A.A.); (S.G.C.)
| | - Ahmed Attia
- Research Laboratory (LR23JS01) Sport Performance, Health & Society, Higher Institute of Sport and Physical Education of Ksar Saîd, University of La Manouba, Tunis 2010, Tunisia; (H.F.); (E.M.); (A.A.); (S.G.C.)
| | - Sylvain Durand
- Laboratory Movement, Interactions, Performance (UR 4334), Department of Sport Sciences, Faculty of Sciences and Technologies, Le Mans University, 72000 Le Mans, France; (S.D.); (S.B.); (B.B.)
| | - Sébastien Boyas
- Laboratory Movement, Interactions, Performance (UR 4334), Department of Sport Sciences, Faculty of Sciences and Technologies, Le Mans University, 72000 Le Mans, France; (S.D.); (S.B.); (B.B.)
| | - Bruno Beaune
- Laboratory Movement, Interactions, Performance (UR 4334), Department of Sport Sciences, Faculty of Sciences and Technologies, Le Mans University, 72000 Le Mans, France; (S.D.); (S.B.); (B.B.)
| | - Sabri Gaied Chortane
- Research Laboratory (LR23JS01) Sport Performance, Health & Society, Higher Institute of Sport and Physical Education of Ksar Saîd, University of La Manouba, Tunis 2010, Tunisia; (H.F.); (E.M.); (A.A.); (S.G.C.)
| | - Wael Maktouf
- Bioengineering, Tissues and Neuroplasticity, UR 7377, Faculty of Health/EPISEN, University of Paris-Est Créteil, 8 rue du Général Sarrail, 94010 Créteil, France
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Khattab MH, Said SM, Fayez MA, Elaguizy MM, Mohamed AAA, Ghobashy AM. The Association Between Preoperative Insulin-Like Growth Factor 1 Levels and the Total Body Weight Loss in Women Post Laparoscopic Sleeve Gastrectomy. Obes Surg 2024; 34:874-881. [PMID: 38285303 PMCID: PMC10899394 DOI: 10.1007/s11695-024-07077-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Despite the well-described optimal initial clinical response of sleeve gastrectomy (SG) in the treatment of obesity, some patients do not achieve optimal initial clinical response. Insulin-like growth factor-1 (IGF-1) has currently shown an association with post-bariatric surgery weight loss. This study aimed to assess the IGF-1 levels in female patients with obesity, the change after surgery, and their association with the metabolic profile and weight loss after surgery. PATIENTS AND METHODS This was a prospective study that was conducted on adult female patients who were recruited for SG. The patients underwent clinical and laboratory investigations that included the IGF-1 measurement. At the 1-year follow-up, the same clinical and laboratory measures were repeated. RESULTS This study included 100 female patients. At the 1-year follow-up, there was a statistically significant reduction in body mass index (BMI) (p < 0.001), fasting HbA1C levels (p < 0.001), and triglycerides (p < 0.001), as well as a statistically significant increase in HDL (p < 0.001) and IGF-1 (p < 0.001). Multiple regression analysis revealed that, among the patients baseline characteristics, the significant predictors for the percentage of total weight loss (%TWL) were the patients' BMI (p < 0.001) and IGF-1 levels (p < 0.001). The ROC curve showed that an IGF1 cutoff value of ≤ 23 ng/ml detected suboptimal initial clinical response, with a sensitivity of 95.35% and a specificity of 100%. CONCLUSION This study underscores the significant impact of SG on weight loss and metabolic improvements in female patients. Baseline IGF-1 levels emerged as a crucial predictor of optimal initial clinical response.
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Affiliation(s)
| | - Sami M Said
- Department of General Surgery, Faculty of Medicine, Cairo University, Cairo, Egypt
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Ach T, Ben Haj Slama N, Gorchane A, Ben Abdelkrim A, Garma M, Ben Lasfar N, Bellazreg F, Debbabi W, Hachfi W, Chadli Chaieb M, Zaouali M, Letaief A, Ach K. Explaining Long COVID: A Pioneer Cross-Sectional Study Supporting the Endocrine Hypothesis. J Endocr Soc 2024; 8:bvae003. [PMID: 38260089 PMCID: PMC10801829 DOI: 10.1210/jendso/bvae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Indexed: 01/24/2024] Open
Abstract
Context In some patients, symptoms may persist after COVID-19, defined as long COVID. Its pathogenesis is still debated and many hypotheses have been raised. Objective Our primary objective was to evaluate the corticotroph and somatotroph functions of patients previously infected with SARS-CoV-2 and experiencing post-COVID-19 syndrome to detect any deficiencies that may explain long COVID. Methods A cross-sectional study was conducted including patients who had previously contracted SARS-CoV-2 with a postinfection period of 3 months or less to 15 months, divided into 2 groups. The first group (G1) comprised fully recovered patients, while the second group (G2) included patients experiencing long COVID. The primary outcome was the comparison of corticotroph and somatotroph functions. Results A total of 64 patients were divided into 2 groups, each consisting of 32 patients. G2 exhibited more frequently anterior pituitary deficits compared to G1 (P = .045): for the corticotroph axis (G1: 6.3% vs G2: 28.1%) and for the somatotroph axis (G1: 31.3% vs G2: 59.4%). Baseline cortisol level was significantly lower in G2 (G1: 13.37 µg/dL vs G2: 11.59 µg/dL) (P = .045). The peak cortisol level was also lower in G2 (G1: 23.60 µg/dL vs G2: 19.14 µg/dL) (P = .01). For the somatotroph axis, the insulin growth factor-1 level was lower in G2 (G1: 146.03 ng/mL vs G2: 132.25 ng/mL) (P = .369). The peak growth hormone level was also lower in G2 (G1: 4.82 ng/mL vs G2: 2.89 ng/mL) (P = .041). Conclusion The results showed that long COVID patients in our cohort were more likely to have anterior pituitary deficiencies. The endocrine hypothesis involving anterior pituitary insufficiency can be considered to explain long COVID.
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Affiliation(s)
- Taieb Ach
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Laboratory of Exercise Physiology and Pathophysiology, L.R. 19ES09, Sousse 4000, Tunisia
| | - Nassim Ben Haj Slama
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
| | - Asma Gorchane
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
| | - Asma Ben Abdelkrim
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
| | - Meriem Garma
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Infectious Diseases Department, Farhat Hached Hospital, Sousse 4000, Tunisia
| | - Nadia Ben Lasfar
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Infectious Diseases Department, Farhat Hached Hospital, Sousse 4000, Tunisia
| | - Foued Bellazreg
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Infectious Diseases Department, Farhat Hached Hospital, Sousse 4000, Tunisia
| | - Widéd Debbabi
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Department of Endocrinology, University Hospital of Ibn El Jazzar, Kairouan 4041, Tunisia
| | - Wissem Hachfi
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Infectious Diseases Department, Farhat Hached Hospital, Sousse 4000, Tunisia
| | - Molka Chadli Chaieb
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
| | - Monia Zaouali
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Laboratory of Exercise Physiology and Pathophysiology, L.R. 19ES09, Sousse 4000, Tunisia
| | - Amel Letaief
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
- Infectious Diseases Department, Farhat Hached Hospital, Sousse 4000, Tunisia
| | - Koussay Ach
- Department of Endocrinology, University Hospital of Farhat Hached, Sousse 4000, Tunisia
- University of Sousse, Faculty of Medicine of Sousse, Sousse 4000, Tunisia
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Ungvari A, Gulej R, Csik B, Mukli P, Negri S, Tarantini S, Yabluchanskiy A, Benyo Z, Csiszar A, Ungvari Z. The Role of Methionine-Rich Diet in Unhealthy Cerebrovascular and Brain Aging: Mechanisms and Implications for Cognitive Impairment. Nutrients 2023; 15:4662. [PMID: 37960316 PMCID: PMC10650229 DOI: 10.3390/nu15214662] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
As aging societies in the western world face a growing prevalence of vascular cognitive impairment and Alzheimer's disease (AD), understanding their underlying causes and associated risk factors becomes increasingly critical. A salient concern in the western dietary context is the high consumption of methionine-rich foods such as red meat. The present review delves into the impact of this methionine-heavy diet and the resultant hyperhomocysteinemia on accelerated cerebrovascular and brain aging, emphasizing their potential roles in cognitive impairment. Through a comprehensive exploration of existing evidence, a link between high methionine intake and hyperhomocysteinemia and oxidative stress, mitochondrial dysfunction, inflammation, and accelerated epigenetic aging is drawn. Moreover, the microvascular determinants of cognitive deterioration, including endothelial dysfunction, reduced cerebral blood flow, microvascular rarefaction, impaired neurovascular coupling, and blood-brain barrier (BBB) disruption, are explored. The mechanisms by which excessive methionine consumption and hyperhomocysteinemia might drive cerebromicrovascular and brain aging processes are elucidated. By presenting an intricate understanding of the relationships among methionine-rich diets, hyperhomocysteinemia, cerebrovascular and brain aging, and cognitive impairment, avenues for future research and potential therapeutic interventions are suggested.
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Affiliation(s)
- Anna Ungvari
- Department of Public Health, Semmelweis University, 1089 Budapest, Hungary
| | - Rafal Gulej
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Boglarka Csik
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Public Health, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
| | - Peter Mukli
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Public Health, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
| | - Sharon Negri
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Stefano Tarantini
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Public Health, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA
- Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Andriy Yabluchanskiy
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Public Health, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA
- Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Zoltan Benyo
- Institute of Translational Medicine, Semmelweis University, 1094 Budapest, Hungary;
- Cerebrovascular and Neurocognitive Disorders Research Group, Eötvös Loránd Research Network, Semmelweis University, 1094 Budapest, Hungary
| | - Anna Csiszar
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA
- Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Translational Medicine, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
| | - Zoltan Ungvari
- Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.G.); (B.C.); (P.M.); (S.N.); (S.T.); (A.Y.); (A.C.); (Z.U.)
- Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- International Training Program in Geroscience, Department of Public Health, Doctoral School of Basic and Translational Medicine, Semmelweis University, 1089 Budapest, Hungary
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA
- Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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Turgut S, Acarer D, Seyit H, Pamuk N, Piskinpasa H, Bozkur E, Karabulut M, Cakir I. Insulin-Like Growth Factor-I Might be a Predictor for Severe Non-Alcoholic Fatty Liver Disease in Morbidly Obese Patients. Horm Metab Res 2022; 54:696-703. [PMID: 35588737 DOI: 10.1055/a-1856-7014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The aim of the study was to compare the IGF-1 levels, metabolic and clinical parameters among the ultrasonographically classified non-alcoholic fatty liver disease (NAFLD) groups and determine the factors that may predict the NAFLD severity in patients with morbid obesity. This study was conducted on 316 morbidly obese patients (250 F/66 M). The data of patients before and 1st-year after bariatric surgery were recorded. According to the ultrasonographically NAFLD screening, patients with normal hepatic features were classified as Group 1(n=57), with mild and moderate NAFLD were classified as Group 2(n=219), and with severe NAFLD were classified as Group 3(n=40). IGF-1 standard deviation scores (SDSIGF1) were calculated according to age and gender. Parameters that could predict the presence and severity of NAFLD were evaluated. IGF-1 levels were significantly associated with Group 3 than Group 1(p=0.037), and the significance remained between the same groups when IGF-1 levels were standardized as SDSIGF1(p=0.036). Decreased levels of SDSIGF1 explained 5% of severe NAFLD than the normal group (p=0.036). Liver Diameter, FPG, ALT, AST, and GGT were also found as significant predictors for severe NAFLD. There were significant differences between pre-and postop values in all groups (p<0.001). This study showed that IGF-1 might be considered a sgnificant predictor of severe NAFLD in morbidly obese patients. It is crucial in clinical practice to determine predictive factors of NAFLD that could support the diagnosis accompanied by non-invasive imaging methods.
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Affiliation(s)
- Seda Turgut
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
| | - Didem Acarer
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
| | - Hakan Seyit
- General Surgery, University of Health Science Bakirkoy Dr. Sadi Konuk Trainig and Research Hospital, İstanbul, Turkey
| | - Naim Pamuk
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
| | - Hamide Piskinpasa
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
| | - Evin Bozkur
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
| | - Mehmet Karabulut
- General Surgery, University of Health Science Bakirkoy Dr. Sadi Konuk Trainig and Research Hospital, İstanbul, Turkey
| | - Ilkay Cakir
- Endocrinology and Metabolism, University of Health Science Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey
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7
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Ruiz S, Vázquez F, Pellitero S, Puig-Domingo M. ENDOCRINE OBESITY: Pituitary dysfunction in obesity. Eur J Endocrinol 2022; 186:R79-R92. [PMID: 35333754 DOI: 10.1530/eje-21-0899] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 03/24/2022] [Indexed: 11/08/2022]
Abstract
Obesity, the growing pandemic of the 21st century, is associated with multiple organ dysfunction, either by a direct increase in fatty organ content or by indirect modifications related to general metabolic changes driven by a specific increase in biologic products. The pituitary gland is not protected against such a situation. Different hypothalamic-pituitary axes experience functional modifications initially oriented to an adaptive situation that, with years of obesity, turn to maladaptive dynamics that contribute to perpetuating obesity and specific symptoms of their hormonal nature. This paper reviews the recent knowledge on obesity-related pituitary dysfunction and its pathogenic mechanisms and discusses potential therapeutic actions aimed at contributing to ameliorating the complex treatment of severe cases of obesity.
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Affiliation(s)
- Sabina Ruiz
- Department of Endocrinology and Nutrition, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Catalonia, Spain
| | - Federico Vázquez
- Department of Endocrinology and Nutrition, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Catalonia, Spain
| | - Silvia Pellitero
- Department of Endocrinology and Nutrition, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Catalonia, Spain
| | - Manel Puig-Domingo
- Department of Endocrinology and Nutrition, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Catalonia, Spain
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8
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Trends in insulin-like growth factor-1 levels after bariatric surgery: a systematic review and meta-analysis. Int J Obes (Lond) 2022; 46:891-900. [PMID: 35034953 DOI: 10.1038/s41366-021-01051-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 11/29/2021] [Accepted: 12/10/2021] [Indexed: 11/08/2022]
Abstract
According to studies, there are many inconsistencies in how IGF-1 levels change after bariatric surgery compared to before surgery, as well as its effects. These discrepancies can be attributed to various factors such as age, body mass index (BMI), and duration of intervention. Therefore, the aim of this study was to evaluate the level of insulin-like growth factor-1 (IGF-1) after bariatric surgery. A systematic review and meta-analysis based on the PRISMA guidelines was conducted from inception until 2021. From 1871 articles initially selected, 24 studies with 28 treatment arms met the eligible criteria and were included. Pooled findings from the random-effects model indicated that IGF-1 levels increased significantly [weighted mean difference (WMD) = 8.84 ng/ml; 95% confidence interval (CI) 0.30-17.39; p = 0.043] after bariatric surgery compared to before surgery. No significant heterogeneity was noted among the studies (Cochran Q test, p = 0.90, I2 = 0.0%). In subgroup analysis, bariatric surgery significantly increased IGF-1 levels at age <40 years but not at age ≤40 years. Bariatric surgery is capable of increasing the IGF-1 levels compared to the period prior to surgery but with a modest clinical magnitude.
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9
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Balasubramanian P, Kiss T, Tarantini S, Nyúl-Tóth Á, Ahire C, Yabluchanskiy A, Csipo T, Lipecz A, Tabak A, Institoris A, Csiszar A, Ungvari Z. Obesity-induced cognitive impairment in older adults: a microvascular perspective. Am J Physiol Heart Circ Physiol 2021; 320:H740-H761. [PMID: 33337961 PMCID: PMC8091942 DOI: 10.1152/ajpheart.00736.2020] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Over two-thirds of individuals aged 65 and older are obese or overweight in the United States. Epidemiological data show an association between the degree of adiposity and cognitive dysfunction in the elderly. In this review, the pathophysiological roles of microvascular mechanisms, including impaired endothelial function and neurovascular coupling responses, microvascular rarefaction, and blood-brain barrier disruption in the genesis of cognitive impairment in geriatric obesity are considered. The potential contribution of adipose-derived factors and fundamental cellular and molecular mechanisms of senescence to exacerbated obesity-induced cerebromicrovascular impairment and cognitive decline in aging are discussed.
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Affiliation(s)
- Priya Balasubramanian
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Tamas Kiss
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,2International Training Program in Geroscience, Theoretical Medicine Doctoral School, Departments of Medical Physics and Informatics & Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary
| | - Stefano Tarantini
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,3International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine, Department of Public Health, Semmelweis University, Budapest, Hungary,4Department of Health Promotion Sciences, the Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Ádám Nyúl-Tóth
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,5International Training Program in Geroscience, Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Chetan Ahire
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andriy Yabluchanskiy
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Tamas Csipo
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,3International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine, Department of Public Health, Semmelweis University, Budapest, Hungary,6International Training Program in Geroscience, Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Agnes Lipecz
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,3International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine, Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Adam Tabak
- 3International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine, Department of Public Health, Semmelweis University, Budapest, Hungary,7Department of Internal Medicine and Oncology, Faculty of Medicine, Semmelweis University, Budapest, Hungary,8Department of Epidemiology and Public Health, University College London, London, United Kingdom
| | - Adam Institoris
- 9Hotchkiss Brain Institute, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Anna Csiszar
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,2International Training Program in Geroscience, Theoretical Medicine Doctoral School, Departments of Medical Physics and Informatics & Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary
| | - Zoltan Ungvari
- 1Vascular Cognitive Impairment and Neurodegeneration Program, Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging/Reynolds Oklahoma Center on Aging, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,2International Training Program in Geroscience, Theoretical Medicine Doctoral School, Departments of Medical Physics and Informatics & Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary,3International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine, Department of Public Health, Semmelweis University, Budapest, Hungary,4Department of Health Promotion Sciences, the Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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Barocrinology: The Endocrinology of Obesity from Bench to Bedside. Med Sci (Basel) 2020; 8:medsci8040051. [PMID: 33371340 PMCID: PMC7768467 DOI: 10.3390/medsci8040051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022] Open
Abstract
Obesity has reached pandemic proportions. Hormonal and metabolic imbalances are the key factors that lead to obesity. South Asian populations have a unique phenotype, peculiar dietary practices, and a high prevalence of consanguinity. Moreover, many lower middle-income countries lack appropriate resources, super-specialists, and affordability to manage this complex disorder. Of late, there has been a substantial increase in both obesity and diabesity in India. Thus, many more patients are being managed by different types of bariatric procedures today than ever before. These patients have many types of endocrine and metabolic disturbances before and after bariatric surgery. Therefore, these patients should be managed by experts who have knowledge of both bariatric surgery and endocrinology. The authors propose “Barocrinology”, a novel terminology in medical literature, to comprehensively describe the field of obesity medicine highlighting the role of knowing endocrine physiology for understating its evolution, insights into its complications and appreciating the changes in the hormonal milieu following weight loss therapies including bariatric surgery. Barocrinology, coined as a portmanteau of “baro” (weight) and endocrinology, focuses upon the endocrine and metabolic domains of weight physiology and pathology. This review summarizes the key pointers of bariatric management from an endocrine perspective.
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Ohira M, Watanabe Y, Yamaguchi T, Saiki A, Oshiro T, Tatsuno I. Low serum insulin-like growth factor-1 level is a predictor of low total weight loss percentage after sleeve gastrectomy. Surg Obes Relat Dis 2020; 16:1978-1987. [PMID: 32900619 DOI: 10.1016/j.soard.2020.07.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/12/2020] [Accepted: 07/31/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Obesity is a leading cause of metabolic disorders and mortality. Laparoscopic sleeve gastrectomy (LSG) confers beneficial effects not only on weight but also on metabolic disorder development. However, some patients show insufficient weight loss after LSG. A total weight loss percentage (%TWL) <20% after LSG is defined as insufficient. The prediction of patients with insufficient weight loss after LSG before the procedure is performed may prove helpful. OBJECTIVES To determine predictors of %TWL after LSG. SETTING Longitudinal study in a university hospital. METHODS We retrospectively reviewed 90 obese patients who underwent LSG and were followed up for 12 months thereafter. We analyzed the relationship between %TWL and preoperative clinical parameters, such as age, sex, body mass index, lipid and glucose metabolism, and some hormones. Patients were divided into 2 groups, %TWL <20% and 20% ≤ %TWL. Multiple regression model and logistic regression models were performed. RESULTS LSG led to significant improvements in weight, liver, and kidney function, and lipid and glucose metabolism. The serum insulin-like growth factor-1 (IGF-1) level was significantly lower in patients with %TWL <20%. Sex, diabetes presence, body mass index, and IGF-1 were independent predictors of %TWL. Receiver operating characteristic curve analysis showed that the cutoff value of IGF-1 for %TWL <20% was 100.0ng/mL. Male sex, diabetes presence, lower preoperative BMI, and IGF-1 values were independently associated with lower %TWL (%TWL <20%). CONCLUSIONS Serum IGF-1 can be used to screen for patients at risk of low %TWL after LSG.
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Affiliation(s)
- Masahiro Ohira
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.
| | - Yasuhiro Watanabe
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Takashi Yamaguchi
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Atsuhito Saiki
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Takashi Oshiro
- Department of Surgery, Toho University Sakura Medical Center, Chiba, Japan
| | - Ichiro Tatsuno
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
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12
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Microglia, Lifestyle Stress, and Neurodegeneration. Immunity 2020; 52:222-240. [PMID: 31924476 DOI: 10.1016/j.immuni.2019.12.003] [Citation(s) in RCA: 175] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/26/2019] [Accepted: 12/09/2019] [Indexed: 02/06/2023]
Abstract
Recent years have witnessed a revolution in our understanding of microglia biology, including their major role in the etiology and pathogenesis of neurodegenerative diseases. Technological advances have enabled the identification of microglial signatures in health and disease, including the development of new models to investigate and manipulate human microglia in vivo in the context of disease. In parallel, genetic association studies have identified several gene risk factors associated with Alzheimer's disease that are specifically or highly expressed by microglia in the central nervous system (CNS). Here, we discuss evidence for the effect of stress, diet, sleep patterns, physical activity, and microbiota composition on microglia biology and consider how lifestyle might influence an individual's predisposition to neurodegenerative diseases. We discuss how different lifestyles and environmental factors might regulate microglia, potentially leading to increased susceptibility to neurodegenerative disease, and we highlight the need to investigate the contribution of modern environmental factors on microglia modulation in neurodegeneration.
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Schilbach K, Bidlingmaier M. Laboratory investigations in the diagnosis and follow-up of GH-related disorders. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2019; 63:618-629. [PMID: 31939487 PMCID: PMC10522234 DOI: 10.20945/2359-3997000000192] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 10/12/2019] [Indexed: 11/23/2022]
Abstract
In addition to auxiological, clinical and metabolic features measurements of growth hormone (GH) and insulin-like growth factor I (IGF-I) complement our tools in diagnosis and follow-up of GH-related disorders. While comparably robust during the pre-analytical phase, measurement and interpretation of concentrations of both hormones can be challenging due to analytical issues and biological confounders. Assay methods differ in terms of antibody specificity, interference from binding proteins, reference preparations and sensitivity. GH assays have different specificity towards different GH-isoforms (e.g. 20 kDa GH, placental GH) and interference from the GH antagonist Pegvisomant. The efficacy to prevent binding protein interference is most important in IGF-I assays. Methodological differences between assays require that reference intervals and diagnostic cut-offs are assay-specific. Among biological variables, pubertal development and age are most relevant for IGF-I, making detailed reference intervals mandatory for interpretation. GH has pulsatile secretion and short half-life. Its concentration is modified by acute factors such as stress, exercise and sleep, but also by intake of oral estrogens and anthropometric factors (e.g. BMI). Other GH dependent biomarkers such as free IGF-I, IGF binding protein 3 (IGFBP 3) and acid labile subunit (ALS) have been proposed. Their concentrations largely mirror the information obtained through measurement of IGF-I, but their measurement can be helpful in particular situations. In this review, we describe the evolution of analytical methods to measure biomarkers of GH action, the impact of the methodological changes on laboratory results and the need to include biological variables in their interpretation. Arch Endocrinol Metab. 2019;63(6):618-29.
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Affiliation(s)
- Katharina Schilbach
- Medizinische Klinik und Poliklinik IVKlinikum der Universität MünchenMunichGermanyMedizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Martin Bidlingmaier
- Medizinische Klinik und Poliklinik IVKlinikum der Universität MünchenMunichGermanyMedizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
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Grannell A, De Vito G, Murphy JC, le Roux CW. The influence of skeletal muscle on appetite regulation. Expert Rev Endocrinol Metab 2019; 14:267-282. [PMID: 31106601 DOI: 10.1080/17446651.2019.1618185] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/09/2019] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Fat-free mass, of which skeletal muscle is amajor component, correlates positively with energy intake at energy balance. This is due to the effects of metabolically active tissue on energy expenditure which in itself appears to signal to the brain adrive to eat to ensure cellular energy homeostasis. The mechanisms responsible for this drive to eat are unknown but are likely to be related to energy utilization. Here muscle imparts an indirect influence on hunger. The drive to eat is also enhanced after muscle loss secondary to intentional weight loss. The evidence suggests loss of both fat mass and skeletal muscle mass directly influences the trajectory and magnitude of weight regain highlighting their potential role in long-termappetite control. The mechanisms responsible for the potential direct drive to eat stemming from muscle loss are unknown. AREAS COVERED The literature pertaining to muscle and appetite at energy balance and after weight loss was examined. Aliterature search was conducted to identify studies related to appetite, muscle, exercise, and weight loss. EXPERT OPINION Understanding the mechanisms which link energy expenditure and muscle loss to hunger has the potential to positively impact both the prevention and the treatment of obesity.
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Affiliation(s)
- Andrew Grannell
- a Diabetes Complications Research Centre, Conway Institute, School of Medicine and Medical Sciences , University College Dublin , Dublin , Ireland
- b MedFit Proactive Healthcare, Blackrock , Dublin , Ireland
| | - Giuseppe De Vito
- c School of Public Health, Physiotherapy and Sports Science , University College Dublin , Dublin , Ireland
| | - John C Murphy
- b MedFit Proactive Healthcare, Blackrock , Dublin , Ireland
| | - Carel W le Roux
- a Diabetes Complications Research Centre, Conway Institute, School of Medicine and Medical Sciences , University College Dublin , Dublin , Ireland
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Holly JMP, Biernacka K, Perks CM. Systemic Metabolism, Its Regulators, and Cancer: Past Mistakes and Future Potential. Front Endocrinol (Lausanne) 2019; 10:65. [PMID: 30809194 PMCID: PMC6380210 DOI: 10.3389/fendo.2019.00065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/23/2019] [Indexed: 12/28/2022] Open
Abstract
There has been a resurgence of interest in cancer metabolism; primarily in the resetting of metabolism within malignant cells. Metabolism within cells has always been a tightly regulated process; initially in protozoans due to metabolic enzymes, and the intracellular signaling pathways that regulate these, being directly sensitive to the availability of nutrients. With the evolution of metazoans many of these controls had been overlaid by extra-cellular regulators that ensured coordinated regulation of metabolism within the community of cells that comprised the organism. Central to these systemic regulators is the insulin/insulin-like growth factor (IGF) system that throughout evolution has integrated the control of tissue growth with metabolic status. Oncological interest in the main systemic metabolic regulators greatly subsided when pharmaceutical strategies designed to treat cancers failed in the clinic. During the same period, however the explosion of new information from genetics has revealed the complexity and heterogeneity of advanced cancers and helped explain the problems of managing cancer when it reaches such a stage. Evidence has also accumulated implying that the setting of the internal environment determines whether cancers progress to advanced disease and metabolic status is clearly an important component of this local ecology. We are in the midst of an epidemic of metabolic disorders and there is considerable research into strategies for controlling metabolism. Integrating these new streams of information suggests new possibilities for cancer prevention; both primary and secondary.
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Affiliation(s)
- Jeff M. P. Holly
- Faculty of Medicine, School of Translational Health Science, University of Bristol, Southmead Hospital, Bristol, United Kingdom
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Cornejo-Pareja I, Clemente-Postigo M, Tinahones FJ. Metabolic and Endocrine Consequences of Bariatric Surgery. Front Endocrinol (Lausanne) 2019; 10:626. [PMID: 31608009 PMCID: PMC6761298 DOI: 10.3389/fendo.2019.00626] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 08/29/2019] [Indexed: 12/17/2022] Open
Abstract
Obesity is one of the most serious worldwide epidemics of the twenty-first century according to the World Health Organization. Frequently associated with a number of comorbidities, obesity threatens and compromises individual health and quality of life. Bariatric surgery (BS) has been demonstrated to be an effective treatment to achieve not only sustained weight loss but also significant metabolic improvement that goes beyond mere weight loss. The beneficial effects of BS on metabolic traits are so widely recognized that some authors have proposed BS as metabolic surgery that could be prescribed even for moderate obesity. However, most of the BS procedures imply malabsorption and/or gastric acid reduction which lead to nutrient deficiency and, consequently, further complications could be developed in the long term. In fact, BS not only affects metabolic homeostasis but also has pronounced effects on endocrine systems other than those exclusively involved in metabolic function. The somatotropic, corticotropic, and gonadal axes as well as bone health have also been shown to be affected by the various BS procedures. Accordingly, further consequences and complications of BS in the long term in systems other than metabolic system need to be addressed in large cohorts, taking into account each bariatric procedure before making generalized recommendations for BS. In this review, current data regarding these issues are summarized, paying special attention to the somatotropic, corticotropic, gonadal axes, and bone post-operative health.
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Affiliation(s)
- Isabel Cornejo-Pareja
- Unidad de Gestión Clínica Endocrinología y Nutrición, Instituto de Investigación Biomédica de Málaga—IBIMA, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, Málaga, Spain
- Centro de Investigación Biomédica en Red (CIBER) Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Málaga, Spain
| | - Mercedes Clemente-Postigo
- Unidad de Gestión Clínica Endocrinología y Nutrición, Instituto de Investigación Biomédica de Málaga—IBIMA, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, Málaga, Spain
- Centro de Investigación Biomédica en Red (CIBER) Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Málaga, Spain
- *Correspondence: Mercedes Clemente-Postigo
| | - Francisco J. Tinahones
- Unidad de Gestión Clínica Endocrinología y Nutrición, Instituto de Investigación Biomédica de Málaga—IBIMA, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, Málaga, Spain
- Centro de Investigación Biomédica en Red (CIBER) Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Málaga, Spain
- Francisco J. Tinahones
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Abstract
Background Adult growth hormone (GH) deficiency is associated with fatty liver disease and shows several features of the metabolic syndrome. Vice versa obesity is characterized as a state of low GH function. Here, we aimed to define the role of hepatic GH signaling and its metabolic consequences in non-alcoholic fatty liver disease. Methods In humans, GHR and IGF-1 levels were determined in liver samples of 29 obese patients with non-alcoholic steatohepatitis (NASH) or simple steatosis. Cellular effects of GH on insulin signaling were investigated in GH receptor (GHR) knockdown HepG2 cells. Results Hepatic IGF-1 expression levels reflecting GH action were significantly lower and fasting glucose concentrations higher in patients with NASH than in patients with simple steatosis. GHR knockdown in hepatocytes resulted in a scenario of high glucose output displayed by reduced glycogen content, increased gluconeogenesis and diminished insulin signaling. Conclusions Our data suggest that GH signaling in the liver is diminished in patients with NASH and associated with deteriorated hepatic insulin sensitivity and metabolic activity. Reduced hepatic GH action might contribute to insulin resistance in obese patients with NASH.
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Oh JH, Chung SW, Oh KS, Yoo JC, Jee W, Choi JA, Kim YS, Park JY. Effect of recombinant human growth hormone on rotator cuff healing after arthroscopic repair: preliminary result of a multicenter, prospective, randomized, open-label blinded end point clinical exploratory trial. J Shoulder Elbow Surg 2018; 27:777-785. [PMID: 29337026 DOI: 10.1016/j.jse.2017.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 11/09/2017] [Accepted: 11/14/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND This study evaluated the effect of systemic injection of recombinant human growth hormone (rhGH) on outcomes after arthroscopic rotator cuff repair. METHODS This multicenter, prospective, randomized, comparative trial, randomized patients who underwent arthroscopic repair of large-sized rotator cuff tears into 3 groups: rhGH 4 mg group (n = 26), rhGH 8 mg group (n = 24) , and control group (n = 26). Sustained release rhGH was injected subcutaneously once weekly for 3 months postoperatively. The healing failure rate (primary end point), fatty infiltration, and atrophy of the supraspinatus muscle, and functional scores (Constant and American Shoulder and Elbow Surgeons scores) were evaluated at 6 months. Range of motion, pain visual analog scale, and serum insulin-like growth factor-1 level were measured at each follow-up. RESULTS The healing failure rate was similar between groups (rhGH 4 mg group, 30.8%; rhGH 8 mg group, 16.7%; and control group, 34.6%; all P > .05) The proportion of severe fatty infiltration (Goutallier grade ≥3) was 20.8% in the rhGH 8 mg group, 23.1% in the rhGH 4 mg group, and 34.6% in the control group (P > .05). Functional outcomes, range of motion, and pain visual analog scale were similar between groups (all P > .05). The rhGH 8 mg group showed more increased peak insulin-like growth factor-1 level (279.43 ng/mL) than the rhGH 4 mg group ((196.82 ng/mL) and control group (186.31 ng/mL), which was not statistically different (all P > .05). No rhGH injection-related major safety issues occurred. CONCLUSIONS This preliminary study showed no statistically significant improvement in healing or outcomes related to the treatment of rhGH after rotator cuff repair. However, further study with more enrolled patients after resetting the rhGH dose or daily administration protocol would be mandatory.
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Affiliation(s)
- Joo Han Oh
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Seok Won Chung
- Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Kyung-Soo Oh
- Department of Orthopaedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea.
| | - Jae Chul Yoo
- Department of Orthopaedic Surgery, Sungkyunkwan University School of Medicine, Samsung Seoul Hospital, Seoul, Republic of Korea
| | - Wonhee Jee
- Department of Radiology, Catholic University College of Medicine, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Jung-Ah Choi
- Department of Radiology, Hallym University College of Medicine, Dongtan Sacred Hospital, Hwaseong, Republic of Korea
| | - Yang-Soo Kim
- Department of Orthopaedic Surgery, Catholic University College of Medicine, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Jin-Young Park
- Center for Shoulder, Elbow & Sports Medicine, Neon Orthopaedic Clinic, Seoul, Republic of Korea.
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Palm A, Berne C, Igelström H, Åsenlöf P, Janson C, Lindberg E. The Impact of Continuous Positive Airway Pressure on Circulating IGF-1 in Patients With Obstructive Sleep Apnea. J Clin Sleep Med 2018; 14:385-391. [PMID: 29458693 DOI: 10.5664/jcsm.6982] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 12/05/2017] [Indexed: 01/08/2023]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is a disease with metabolic and cardiovascular consequences and is associated with decreased serum concentrations of insulin-like growth factor-1 (IGF-1). The aim of this study was to investigate whether continuous positive airway pressure (CPAP) will increase serum IGF-1 concentration in patients with OSA. METHODS Patients with moderate to severe OSA were recruited from a sleep clinic and serum IGF-1 was measured before initiation of CPAP and at follow-up after 4.8 ± 2.5 months. Patients adherent to CPAP treatment (usage ≥ 4 h/night) were compared with those considered to be nonadherent (usage < 4 h/night). RESULTS Complete data were obtained from 69 patients (86% male, age 56 ± 12 years, respiratory event index 43 ± 21 events/h, Epworth Sleepiness Scale score 12 ± 5). In those adherent to CPAP (n = 42), there was an increase in serum IGF-1 concentration with 21.1 (95% confidence interval [CI]: 13.1 to 29.2) μg/L compared to 4.7 (95% CI: -4.1 to 13.5) μg/L in the nonadherent group (n = 27) (P = .0083). In a linear multivariate model adjusting for sex, age, body mass index, respiratory event index, and mean oxygen saturation during the night recording, the change in serum IGF-1 concentration was significantly associated with adherence to CPAP treatment (adjusted β coefficient: 21.8, 95% CI: 10.2 to 33.4) and inversely associated with change in body mass index (adjusted β coefficient: -7.1, 95% CI: -11.3 to -3.0) and change in hemoglobin A1c (adjusted β coefficient: -1.8, 95% CI: -33 to -0.3). CONCLUSIONS CPAP usage ≥ 4 h/night is associated with increased serum IGF-1 concentration in male patients with OSA.
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Affiliation(s)
- Andreas Palm
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden.,Centre for Research and Development, Uppsala University, Region Gävleborg, Gävle, Sweden
| | - Christian Berne
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden
| | - Helena Igelström
- Department of Neuroscience, Section of Physiotherapy, Uppsala University, Uppsala, Sweden
| | - Pernilla Åsenlöf
- Department of Neuroscience, Section of Physiotherapy, Uppsala University, Uppsala, Sweden
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Eva Lindberg
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
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Merlotti C, Ceriani V, Morabito A, Pontiroli AE. Subcutaneous fat loss is greater than visceral fat loss with diet and exercise, weight-loss promoting drugs and bariatric surgery: a critical review and meta-analysis. Int J Obes (Lond) 2017; 41:672-682. [DOI: 10.1038/ijo.2017.31] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 12/30/2016] [Accepted: 01/20/2017] [Indexed: 02/07/2023]
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Abstract
Measurements of human growth hormone (GH) and insulin-like growth-factor I (IGF-I) are cornerstones in the diagnosis of acromegaly. Both hormones are also used as biochemical markers in the evaluation of disease activity during treatment. Management of acromegaly is particularly challenging in cases where discordant information is obtained from measurement of GH concentrations following oral glucose load and from measurement of IGF-I. While in some patients biological factors can explain the discrepancy, in many cases issues with the analytical methods seem to be responsible. Assays used by endocrine laboratories to determine concentrations of GH and IGF-I underwent significant changes during the last decades. While generally leading to more sensitive and reproducible methods, these changes also had considerable impact on absolute concentrations measured. This must be reflected by updated decision limits, cut-offs and reference intervals. Since different commercially available assays do not agree very well, method specific interpretation of GH and IGF-I concentrations is required. This complexity in the interpretation of hormone concentrations is not always appropriately reflected in laboratory reports, but also not in clinical guidelines reporting decision limits not related to a specific analytical method. The present review provides an overview about methodological and biological variables affecting the biochemical assessment of acromegaly in diagnosis and follow up.
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Affiliation(s)
- Katharina Schilbach
- Clinical Endocrinology and Endocrine Laboratory, Medizinische Klinik und Poliklinik IV, Klinikum der Ludwig-Maximilians-Universität (LMU), Ziemssenstr. 1, 80336, Munich, Germany
| | - Christian J Strasburger
- Department of Endocrinology and Metabolic Diseases, Campus Charité Mitte, Charité Universitätsmedizin, Charitéplatz 1, 10117, Berlin, Germany
| | - Martin Bidlingmaier
- Endocrine Laboratory, Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Klinikum der Ludwig-Maximilians-Universität (LMU), Ziemssenstr. 1, 80336, Munich, Germany.
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Navarro Díaz M. Consequences of morbid obesity on the kidney. Where are we going? Clin Kidney J 2016; 9:782-787. [PMID: 27994854 PMCID: PMC5162416 DOI: 10.1093/ckj/sfw094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/03/2016] [Indexed: 12/12/2022] Open
Abstract
Obesity and morbid obesity are modifiable risk factors for the development and progression of kidney disease. Obesity has reached epidemic proportions and is currently an important health problem in Europe, so it is necessary to develop therapeutic and preventive strategies. The obesity-related glomerulopathy has been defined as a secondary form of focal segmental glomerulosclerosis, and its most characteristic feature is glomerulomegaly. The renal evolution of patients with obesity-related glomerulopathy (ORG) who have not been treated is unfavourable. However, morbidly obese patients with ORG that underwent bariatric surgery and drastic weight loss had a better outcome. Many inflammatory factors have been implicated in the pathogenic mechanism of renal disease in obesity. Hypoadiponectinaemia, hyperleptinaemia and hyperaldosteronism have been associated with glomerular injury in obese patients. The application of modern techniques has provided important insights that increase the current understanding of ORG. However, further investigation is needed.
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Affiliation(s)
- Maruja Navarro Díaz
- Department of Nephrology, Hospital Universitari Germans Trias i Pujol, Universitat, Autònoma de Barcelona, Esfera UAB, Badalona, Spain
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Martins IJ. Anti-Aging Genes Improve Appetite Regulation and Reverse Cell Senescence and Apoptosis in Global Populations. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/aar.2016.51002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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The impact of obesity on skeletal muscle strength and structure through adolescence to old age. Biogerontology 2015; 17:467-83. [PMID: 26667010 PMCID: PMC4889641 DOI: 10.1007/s10522-015-9626-4] [Citation(s) in RCA: 247] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 11/26/2015] [Indexed: 12/25/2022]
Abstract
Obesity is associated with functional limitations in muscle performance and increased likelihood of developing a functional disability such as mobility, strength, postural and dynamic balance limitations. The consensus is that obese individuals, regardless of age, have a greater absolute maximum muscle strength compared to non-obese persons, suggesting that increased adiposity acts as a chronic overload stimulus on the antigravity muscles (e.g., quadriceps and calf), thus increasing muscle size and strength. However, when maximum muscular strength is normalised to body mass, obese individuals appear weaker. This relative weakness may be caused by reduced mobility, neural adaptations and changes in muscle morphology. Discrepancies in the literature remain for maximal strength normalised to muscle mass (muscle quality) and can potentially be explained through accounting for the measurement protocol contributing to muscle strength capacity that need to be explored in more depth such as antagonist muscle co-activation, muscle architecture, a criterion valid measurement of muscle size and an accurate measurement of physical activity levels. Current evidence demonstrating the effect of obesity on muscle quality is limited. These factors not being recorded in some of the existing literature suggest a potential underestimation of muscle force either in terms of absolute force production or relative to muscle mass; thus the true effect of obesity upon skeletal muscle size, structure and function, including any interactions with ageing effects, remains to be elucidated.
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25
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Relation of insulin-like growth factor to skin ageing. JOURNAL OF THE EGYPTIAN WOMEN’S DERMATOLOGIC SOCIETY 2015. [DOI: 10.1097/01.ewx.0000466361.02193.b0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Fornari R, Francomano D, Greco EA, Marocco C, Lubrano C, Wannenes F, Papa V, Bimonte VM, Donini LM, Lenzi A, Aversa A, Migliaccio S. Lean mass in obese adult subjects correlates with higher levels of vitamin D, insulin sensitivity and lower inflammation. J Endocrinol Invest 2015; 38:367-72. [PMID: 25352234 DOI: 10.1007/s40618-014-0189-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 10/03/2014] [Indexed: 12/20/2022]
Abstract
AIM Several chronic metabolic alterations are present in obese subjects. While it is well known about the detrimental effect of abdominal adipose tissue on chronic metabolic clinical condition, less is known on the role of lean mass in obese subjects. Thus, the aim of our study was to evaluate the potential correlation of muscle mass, metabolic condition and inflammation status in obese individuals. METHODS The study included 426 obese subjects (86 men and 340 female; mean age 44.8 ± 14 years; BMI: 34.9 ± 6.1 kg/m(2)). Exclusion criteria were chronic medical conditions or use of medications affecting bone metabolism, alterations of hormonal and nutritional status, vitamin D supplementation, recent weight loss and prior bariatric surgery. Patients underwent measurements of bone mineral density (lumbar and hip) and body composition (lean mass, total and trunk fat mass) by dual X-ray absorptiometry and were evaluated for hormonal and metabolic profile and inflammatory markers. RESULTS Higher lean body mass (LM%) was inversely correlated with homeostasis model assessment of insulin resistance (p < 0.0091; r(2) 0.03938) and associated with lower fibrinogen levels (p < 0.0001; r(2) 0.1263). Interestingly, in obese subjects, LM% was associated with higher levels of vitamin D (p < 0.0001, r(2) 0.1140), osteocalcin (p < 0.0001, r(2) 0.2401) and insulin-like growth factor-1 (IGF-1) (p < 0.0002, r(2) 0.1367). CONCLUSION Our results show for the first time that in obese patients, higher amounts of lean mass are directly linked to a lower inflammatory profile and to better insulin sensitivity, but also to the presence of higher level of vitamin D and IGF-1. Moreover, these data suggest that higher levels of lean mass in obese people correlate with a better metabolic profile and, thus, strongly suggest the need to develop programs to facilitate an increase in physical activity in obese people.
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Affiliation(s)
- R Fornari
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - D Francomano
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - E A Greco
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
- LiSa Laboratory, Azienda Ospedaliera-Universitaria "Policlinico Vittorio Emanuele", University of Catania, Catania, Italy
| | - C Marocco
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - C Lubrano
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - F Wannenes
- LiSa Laboratory, Azienda Ospedaliera-Universitaria "Policlinico Vittorio Emanuele", University of Catania, Catania, Italy
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University "Foro Italico" of Rome, Largo Lauro De Bosis 15, 00195, Rome, Italy
| | - V Papa
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University "Foro Italico" of Rome, Largo Lauro De Bosis 15, 00195, Rome, Italy
| | - V M Bimonte
- LiSa Laboratory, Azienda Ospedaliera-Universitaria "Policlinico Vittorio Emanuele", University of Catania, Catania, Italy
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University "Foro Italico" of Rome, Largo Lauro De Bosis 15, 00195, Rome, Italy
| | - L M Donini
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - A Lenzi
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
| | - A Aversa
- Department Experimental Medicine, Section Medical Pathophysiology, Endocrinology and Nutrition, University "Sapienza" of Rome, Rome, Italy
- LiSa Laboratory, Azienda Ospedaliera-Universitaria "Policlinico Vittorio Emanuele", University of Catania, Catania, Italy
| | - S Migliaccio
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University "Foro Italico" of Rome, Largo Lauro De Bosis 15, 00195, Rome, Italy.
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Savastano S, Di Somma C, Barrea L, Colao A. The complex relationship between obesity and the somatropic axis: the long and winding road. Growth Horm IGF Res 2014; 24:221-226. [PMID: 25315226 DOI: 10.1016/j.ghir.2014.09.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 01/08/2023]
Abstract
Despite the considerable body of evidence pointing to a possible relationship between the state of the adipose tissue depots and regulation of the somatotropic axis, to date the relationship between obesity and low growth hormone (GH) status remains incompletely understood. The low GH status in obesity is mainly considered as a functional condition, largely reversible after a sustained weight loss. Moreover, due to the effects of the adiposity on the regulation of the somatotropic axis, the application of GH stimulation tests in obesity may also lead to an incorrect diagnosis of GH deficieny (GHD). On the other hand, similar to patients with GHD unrelated to obesity, the reduced GH response to stimulation testing in obese individuals is associated with increased prevalence of cardiovascular risk factors and detrimental alterations of body composition, which contribute to worsening their cardio-metabolic risk profile. In addition, the reduced GH secretion may result in reduced serum insulin-like growth factor (IGF)-1 levels, and the concordance of low peak GH and low IGF-1 identifies a subset of obese individuals with high cardiovascular risk. Furthermore, after weight loss, the normalization of the GH response and IGF-1 levels may or may not occur, and in patients undergoing bariatric surgery the persistence of a low GH status may affect the post-operative outcomes. In this review, we will provide an overview on some clinically relevant aspects of the relationship between obesity axis and the somatotropic axis in the light of the recently published research.
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Affiliation(s)
- Silvia Savastano
- Dipartimento di Medicina Clinica e Chirurgia, Unità di Endocrinologia, Università degli Studi di Napoli Federico II, Via S. Pansini, 5, Naples, Italy.
| | | | | | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Unità di Endocrinologia, Università degli Studi di Napoli Federico II, Via S. Pansini, 5, Naples, Italy
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Tomlinson DJ, Erskine RM, Winwood K, Morse CI, Onambélé GL. Obesity decreases both whole muscle and fascicle strength in young females but only exacerbates the aging-related whole muscle level asthenia. Physiol Rep 2014; 2:2/6/e12030. [PMID: 24963030 PMCID: PMC4208641 DOI: 10.14814/phy2.12030] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Obesity has previously been associated with greater muscle strength. Aging, on the other hand, reduces muscle specific force (the force per unit physiological cross‐sectional area [PCSA] of muscle). However, neither the effect of obesity on skeletal muscle specific force nor the combined effects of aging and obesity on this parameter are known. This study aimed to describe the interplay between body mass index (BMI)/adiposity, aging, and skeletal muscle specific force. Ninety‐four untrained healthy women categorized by age into young (Y; mean ± SD: 25.5 ± 9.0 years) versus old (O; 64.8 ± 7.2 years) were assessed for body composition, gastrocnemius medialis (GM) muscle volume (V), net maximum voluntary contraction (nMVC), and specific force (SF). The young obese, while demonstrating 71% and 29% (P < 0.001) higher V and nMVC compared to normal BMI individuals, were in fact 26% (P = 0.007) weaker than these, where V was used to scale nMVC (i.e., nMVC/V). The weakness associated with obesity was further exemplified in the 34% (P < 0.001) lower SF relative to normal BMI individuals. Similarly, ≥40% body fat was associated with 60% and 27% (P < 0.001) higher V and nMVC, but 11% and 25% (P < 0.01) lower nMVC/V and SF than <40% body fat. The aging‐related rates of decline in V (−2 cm3/year P < 0.05) and nMVC (−1.2 cm3/year P < 0.05) were highest in obesity defined by BMI. This effect was also seen when segregating by >40% adiposity. Interestingly, however, obesity appeared advantageous to the aging‐related changes in nMVC/V (P < 0.001) and SF (P < 0.001). Unlike previous reports of greater strength in the obese compared with leaner age‐matched counterparts, we in fact demonstrate that the young sedentary obese, are substantially weaker, where the volume of skeletal muscle is used to scale the maximal torque output, or forces are quantified at the fascicular level. The seemingly positive impact of obesity on rate of aging, however, is complex and warrants further investigations. Our study demonstrates for the first time that at both whole muscle and fascicular levels, high body mass index (BMI) or adiposity categories of obesity are associated with significantly lower skeletal muscle contractile capacity in young adults. Interestingly, the aging effect on obese individuals classified by both BMI and adiposity was foremost observed through the loss of muscle tissue content as well as total muscle strength.
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Affiliation(s)
- David J Tomlinson
- Department of Exercise and Sport Science, Institute for Performance Research, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU, U.K
| | - Robert M Erskine
- Department of Exercise and Sport Science, Institute for Performance Research, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU, U.K Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, L3 3AF, U.K
| | - Keith Winwood
- Department of Exercise and Sport Science, Institute for Performance Research, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU, U.K
| | - Christopher Ian Morse
- Department of Exercise and Sport Science, Institute for Performance Research, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU, U.K
| | - Gladys L Onambélé
- Department of Exercise and Sport Science, Institute for Performance Research, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU, U.K
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Tomlinson DJ, Erskine RM, Morse CI, Winwood K, Onambélé-Pearson GL. Combined effects of body composition and ageing on joint torque, muscle activation and co-contraction in sedentary women. AGE (DORDRECHT, NETHERLANDS) 2014; 36:9652. [PMID: 24744050 PMCID: PMC4082607 DOI: 10.1007/s11357-014-9652-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 03/27/2014] [Indexed: 06/03/2023]
Abstract
This study aimed to establish the interplay between body mass, adiposity, ageing and determinants of skeletal muscle strength. One hundred and two untrained healthy women categorised by age into young (Y) (mean ± SD, 26.7 ± 9.4 years) vs. old (O) (65.1 ± 7.2 years) were assessed for body fat, lean mass, plantar flexion and dorsiflexion maximum voluntary isometric contraction (MVC) torque, muscle activation capacity and antagonist muscle co-contraction. MVC torque normalised to body mass in the obese group was 35 and 29 % lower (p < 0.05) in Y and 34 and 31 % lower (p < 0.05) in O, compared with underweight and normal weight individuals, respectively. Y with ≥40 % body fat had significantly lower activation than Y with <40 % body fat (88.3 vs. 94.4 %, p < 0.05), but O did not exhibit this effect. Co-contraction was affected by ageing (16.1 % in O vs. 13.8 % in Y, p < 0.05) but not body composition. There were significant associations between markers of body composition, age, strength and activation capacity, with the strongest correlation between muscle strength and total body mass (r (2) = 0.508 in Y, p < 0.001, vs. r (2) = 0.204 in O, p < 0.01). Furthermore, the age-related loss in plantar flexion (PF) MVC torque was exacerbated in obese compared to underweight, normal weight and overweight individuals (-0.96 vs. -0.54, -0.57 and -0.57 % per year, p < 0.05). The negative impact of adiposity on muscle performance is associated with not only muscular but also neural factors. Overall, the effects of ageing and obesity on this system are somewhat cumulative.
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Affiliation(s)
- D. J. Tomlinson
- Institute for Performance Research, Department of Exercise and Sport Science, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU UK
| | - R. M. Erskine
- Institute for Performance Research, Department of Exercise and Sport Science, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU UK
- Present Address: Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - C. I. Morse
- Institute for Performance Research, Department of Exercise and Sport Science, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU UK
| | - K. Winwood
- Institute for Performance Research, Department of Exercise and Sport Science, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU UK
| | - G. L. Onambélé-Pearson
- Institute for Performance Research, Department of Exercise and Sport Science, Manchester Metropolitan University, Crewe Green Road, Crewe, CW1 5DU UK
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30
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Pellitero S, Granada ML, Martínez E, Balibrea JM, Guanyabens E, Serra A, Moreno P, Navarro M, Romero R, Alastrué A, Puig-Domingo M. IGF1 modifications after bariatric surgery in morbidly obese patients: potential implications of nutritional status according to specific surgical technique. Eur J Endocrinol 2013; 169:695-703. [PMID: 23946276 DOI: 10.1530/eje-13-0209] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVES IGF1 is decreased in morbidly obese (MO) patients and its changes after bariatric surgery weight loss (WL) are not well known. The aim of this study was to analyse IGF1 modifications in MO patients after WL and its relationship to ghrelin and to different types of surgeries. DESIGN Retrospective follow-up study at the University Medical Center. METHODS One hundred and nine MO patients (age 44.19.3, BMI 51.748.75KG/M(2)) were evaluated at baseline and 1 year after surgery: 28 sleeve gastrectomy (SG), 31 distal modified (m), and 50 ringed (r) Roux-en-Y gastric bypass (RYGBP) surgery. Changes in IGF1, IGFBP3, ratio IGF1:IGFBP3, and ghrelin were evaluated 1 year after surgery. RESULTS Baseline prevalence of low IGF1 (defined by s.d. IGF1<-2) was 22%, and %WL 1 year after surgery was 34.9±8.9%. There was a significant decrease in IGFBP3 in all the procedures, an increase in IGF1:IGFBP3 ratio in rRYGBP and SG, but total IGF1 only increased significantly in SG. Albumin concentrations decreased in mRYGBP, did not change in rRYGBP, but increased in SG after surgery. Total ghrelin concentrations increased after both RYGBPs and decreased after SG (P<0.05 in all cases). The prevalence of low IGF1 decreased in SG (28.6 vs 10.1%, P=0.03) and did not change in RYGPBP techniques. The %albumin change was the only dependent variable associated with the % total IGF1 change. CONCLUSIONS Recovery of low IGF1 after bariatric surgery was specifically related to the albumin modifications induced by surgery and was not related to ghrelin modifications.
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Affiliation(s)
- Silvia Pellitero
- Endocrinology and Nutrition Service, Department of Internal Medicine
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31
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Conti E, Zezza L, Ralli E, Caserta D, Musumeci MB, Moscarini M, Autore C, Volpe M. Growth factors in preeclampsia: a vascular disease model. A failed vasodilation and angiogenic challenge from pregnancy onwards? Cytokine Growth Factor Rev 2013; 24:411-25. [PMID: 23800655 DOI: 10.1016/j.cytogfr.2013.05.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 04/30/2013] [Accepted: 05/21/2013] [Indexed: 12/25/2022]
Abstract
Preeclampsia is the major cause of maternofetal and neonatal morbi-mortality including intrauterine growth retardation, miscarriages and stillbirths. Inadequate vascular dilation and angiogenesis represent the crucial underlying defect of gravidic hypertension, denoting a failed response to the vasodilatory and pro-angiogenic challenge imposed by pregnancy, especially if multifetal. A similar pathogenesis appears involved in gestational diabetes. In this review we aimed to provide a hint on understanding the deeply involved angiogenic disorders which eventually culminate in utero-placental failure. The key players in these complex processes may be found in an intricate network of growth factors (GFs) and GF inhibitors, controlled by several vascular risk factors modulated by environment and genes, which eventually impact on early and late cardiovascular outcomes of mother and fetus.
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Affiliation(s)
- E Conti
- Cardiology, Clinical and Molecular Medicine Department, "Sapienza" University of Rome, Italy.
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