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Fauny M, Halin M, Allado E, Brunaud L, Nomine-Criqui C, Albuisson E, Chary-Valckenaere I, Quilliot D, Loeuille D. DXA evaluation of bone fragility 2 years after bariatric surgery in patients with obesity. Bone Rep 2024; 22:101782. [PMID: 39035627 PMCID: PMC11260009 DOI: 10.1016/j.bonr.2024.101782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/24/2024] [Accepted: 06/21/2024] [Indexed: 07/23/2024] Open
Abstract
Purpose The primary objective was to evaluate bone fragility on dual X-ray absorptiometry (DXA) in patients with obesity before and 2 years after bariatric surgery. The secondary objective was to identify risk factors for the development of a bone mineral density ≤ -2 SD at 2 years. Methods This descriptive study included patients with obesity who underwent DXA before and 2 years (±6 months) after bariatric surgery. The BMD and the T-score were assessed at the lumbar spine, femoral neck and total hip. Data on body composition on DXA were also collected. The diagnosis of osteoporosis was retained for a T-score ≤ - 2.5 SD at any measured location. Osteopenia, or low bone mass, was defined by -2.5 SD < T-score ≤ -1 SD. Results Among the 675 included patients, 77.8 % were women, with a mean age of 49.5 years (±11.1). After bariatric surgery, there were significantly more patients with osteoporosis: 3.6 % vs. 0.9 % (p = 0.0001). Multivariate analysis revealed that the risk factors for developing a bone mineral density ≤ -2 SD 2 years after bariatric surgery in patients with normal BMD before surgery were age and lower lean and fat mass before the surgery (OR = 1.07, 95%CI = [1.03-1.12], OR = 0.83, 95%CI = [0.77-0.91], OR = 1.08, 95%CI = [1.02-1.15], respectively). Conclusion There was a significantly higher prevalence of osteoporosis and low bone mass 2 years after bariatric surgery. Older age and lower lean and fat mass at baseline were risk factors for the development of a BMD ≤ -2SD at 2 years.
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Affiliation(s)
- Marine Fauny
- Department of Rheumatology, University Hospital, Nancy, France
- Department of Rheumatology, Saint Charles Hospital, Toul, France
| | - Marion Halin
- Department of Rheumatology, University Hospital, Nancy, France
| | - Edem Allado
- CHRU-Nancy, University Center of Sports Medicine and Adapted Physical Activity, F-54000 Nancy, France
- Université de Lorraine, DevAH, F-54000 Nancy, France
| | - Laurent Brunaud
- Unité Multidisciplinaire de la Chirurgie de l'obésité (UMCO), University Hospital, Nancy, France
- Inserm UMRS 1256 N-GERE (Nutrition-Genetics-Environmental Risks) - University de Lorraine, Faculty of Medicine, Nancy, France
- Department of Gastrointestinal, Visceral, Metabolic, and Cancer Surgery (CVMC), University Hospital, Nancy, France
| | - Claire Nomine-Criqui
- Unité Multidisciplinaire de la Chirurgie de l'obésité (UMCO), University Hospital, Nancy, France
- Inserm UMRS 1256 N-GERE (Nutrition-Genetics-Environmental Risks) - University de Lorraine, Faculty of Medicine, Nancy, France
- Department of Gastrointestinal, Visceral, Metabolic, and Cancer Surgery (CVMC), University Hospital, Nancy, France
| | - Eliane Albuisson
- Université de Lorraine, CNRS, IECL, F-54000 Nancy, France
- CHRU-Nancy, DRCI, Département MPI, Unité de méthodologie, Data management et statistiques UMDS, F-54000 Nancy, France
| | - Isabelle Chary-Valckenaere
- Department of Rheumatology, University Hospital, Nancy, France
- Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA). UMR 7365 CNRS –University of Lorraine, France
| | - Didier Quilliot
- Inserm UMRS 1256 N-GERE (Nutrition-Genetics-Environmental Risks) - University de Lorraine, Faculty of Medicine, Nancy, France
- Department of Endocrinology Diabetology and Nutrition, University Hospital, Nancy, France
| | - Damien Loeuille
- Department of Rheumatology, University Hospital, Nancy, France
- Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA). UMR 7365 CNRS –University of Lorraine, France
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Nie M, Zhang J, Bal M, Duran C, An SW, Zigman JM, Baum M, Hiremath C, Marciano DK, Wolf MTF. Ghrelin enhances tubular magnesium absorption in the kidney. Front Physiol 2024; 15:1363708. [PMID: 38638279 PMCID: PMC11024433 DOI: 10.3389/fphys.2024.1363708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/07/2024] [Indexed: 04/20/2024] Open
Abstract
Osteoporosis after bariatric surgery is an increasing health concern as the rate of bariatric surgery has risen. In animal studies mimicking bariatric procedures, bone disease, together with decreased serum levels of Ca2+, Mg2+ and the gastric hormone Ghrelin were described. Ghrelin regulates metabolism by binding to and activating the growth hormone secretagogue receptor (GHSR) which is also expressed in the kidney. As calcium and magnesium are key components of bone, we tested the hypothesis that Ghrelin-deficiency contributes to osteoporosis via reduced upregulation of the renal calcium channel TRPV5 and the heteromeric magnesium channel TRPM6/7. We expressed GHSR with TRPV5 or TRPM6/7 channel in HEK293 cells and treated them with purified Ghrelin. Whole-cell current density was analyzed by patch-clamp recording. Nephron-specific gene expression was performed by tubular microdissection followed by qPCR in wild-type (WT) mice, and immunofluorescent imaging of GHSR-eGFP mice. Tubular magnesium homeostasis was analyzed in GHSR-null and WT mice at baseline and after caloric restriction. After Ghrelin exposure, whole-cell current density did not change for TRPV5 but increased for TRPM6/7 in a dose-dependent fashion. Applying the Ghrelin-mimetic (D-Trp7, Ala8,D-Phe10)-α-MSH (6-11) amide without and with the GHSR antagonist (D-Lys3)-GHRP6, we confirmed the stimulatory role of Ghrelin towards TRPM6/7. As GHSR initiates downstream signaling via protein kinase A (PKA), we found that the PKA inhibitor H89 abrogated TRPM6/7 stimulation by Ghrelin. Similarly, transfected Gαs, but not the Gαs mutant Q227L, nor Gαi2, Gαq, or Gα13 upregulated TRPM6/7 current density. In microdissected TALs and DCTs similar levels of GHSR mRNA were detected. In contrast, TRPM6 mRNA was expressed in the DCT and also detected in the TAL at 25% expression compared to DCT. Immunofluorescent studies using reporter GHSR-eGFP mice showed a strong eGFP signal in the TAL but surprisingly displayed no eGFP signal in the DCT. In 3-, 6-, and 9-month-old GHSR-null and WT mice, baseline serum magnesium was not significantly different, but 24-h urinary magnesium excretion was elevated in 9-month-old GHSR-null mice. In calorically restricted GHSR-null mice, we detected excess urinary magnesium excretion and reduced serum magnesium levels compared to WT mice. The kidneys from calorically restricted WT mice showed upregulated gene expression of magnesiotropic genes Hnf1b, Cldn-16, Cldn-19, Fxyd-2b, and Parvalbumin compared to GHSR-null mice. Our in vitro studies show that Ghrelin stimulates TRPM6/7 via GHSR and Gαs-PKA signaling. The murine studies are consistent with Ghrelin-GHSR signaling inducing reduced urinary magnesium excretion, particularly in calorically restricted mice when Ghrelin levels are elevated. This effect may be mediated by Ghrelin-upregulation of TRPM6 in the TAL and/or upregulation of other magnesiotropic genes. We postulate that rising Ghrelin levels with hunger contribute to increased renal Mg2+ reabsorption to compensate for lack of enteral Mg2+ uptake.
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Affiliation(s)
- Mingzhu Nie
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Jing Zhang
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Manjot Bal
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Claudia Duran
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Sung Wan An
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Pediatric Nephrology, Department of Pediatrics, University of Michigan, Ann Arbor, MI, United States
| | - Jeffrey M. Zigman
- Department of Internal Medicine, Center for Hypothalamic Research, UTSW Medical Center, Dallas, TX, United States
| | - Michel Baum
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Chitkale Hiremath
- Department of Internal Medicine, Nephrology, and Department of Cell Biology, UTSW Medical Center, Dallas, TX, United States
| | - Denise K. Marciano
- Department of Internal Medicine, Nephrology, and Department of Cell Biology, UTSW Medical Center, Dallas, TX, United States
| | - Matthias T. F. Wolf
- Pediatric Nephrology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Pediatric Nephrology, Department of Pediatrics, University of Michigan, Ann Arbor, MI, United States
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Zahedi B, Daley EJ, Brooks DJ, Bruce M, Townsend RL, Berthoud HR, Bouxsein ML, Yu EW. The PYY/Y2R-deficient male mouse is not protected from bone loss due to Roux-en-Y gastric bypass. Bone 2023; 167:116608. [PMID: 36368466 PMCID: PMC10064867 DOI: 10.1016/j.bone.2022.116608] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/27/2022] [Accepted: 11/05/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Peptide YY (PYY) is an anorexigenic gut hormone that also has anti-osteogenic effects, inhibiting osteoblastic activity and inducing catabolic effects. It has been postulated that increases in PYY after Roux-en-Y gastric bypass (RYGB) contribute to declines in bone mineral density (BMD) and increases in bone turnover. The aim of this study is to determine the role of the PYY Y2-receptor in mediating bone loss post-RYGB in mice. METHODS We compared adult male wildtype (WT) and PYY Y2 receptor-deficient (KO) C57BL/6 mice that received RYGB (WT: n = 8; KO: n = 9), with sham-operated mice (Sham; WT: n = 9; KO: n = 10) and mice that were food-restricted to match the weights of the RYGB-treated group (Weight-Matched, WM; WT: n = 7; KO: n = 5). RYGB or sham surgery was performed at 15-16 weeks of age, and mice sacrificed 21 weeks later. We characterized bone microarchitecture with micro-computed tomography (μCT) at the distal femur (trabecular) and femoral midshaft (cortical). Differences in body weight, bone microarchitecture and biochemical bone markers (parathyroid hormone, PTH; C-telopeptide, CTX; and type 1 procollagen, P1NP) were compared using 2-factor ANOVA with Tukey's adjustments for multiple comparisons. RESULTS Body weights were similar in the WT-RYGB, WT-WM, KO-RYGB, and KO-WM: 41-44 g; these groups weighed significantly less than the Sham surgery groups: 55-57 g. Trabecular BMD was 31-43 % lower in RYGB mice than either Sham or WM in WT and KO groups. This deficiency in trabecular bone was accompanied by a lower trabecular number (19 %-23 %), thickness (22 %-30 %) and increased trabecular spacing (25 %-34 %) in WT and KO groups (p < 0.001 for all comparisons vs. RYGB). RYGB led to lower cortical thickness, cortical tissue mineral density, and cortical bone area fraction as compared to Sham and WM in WT and KO groups (p ≤ 0.004 for all). There were no interactions between genotype and bone microarchitecture, with patterns of response to RYGB similar in both WT and KO groups. CTX and P1NP were significantly higher in RYGB mice than WM in WT and KO groups. PTH did not differ among groups. CONCLUSIONS RYGB induced greater trabecular and cortical deficits and high bone turnover than observed in weight-matched mice, with a similar pattern in the WT and Y2RKO mice. Thus, skeletal effects of RYGB are independent of weight loss, and furthermore, PYY signaling through Y2R is not a key mediator of bone loss post-RYGB.
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Affiliation(s)
- Bita Zahedi
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America.
| | - Eileen J Daley
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America
| | - Daniel J Brooks
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America
| | - Michael Bruce
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America
| | - R Leigh Townsend
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States of America
| | - Hans-Rudolf Berthoud
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States of America
| | - Mary L Bouxsein
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America
| | - Elaine W Yu
- Endocrine Unit, Massachusetts General Hospital, Boston, MA 02114, United States of America
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The Effect of Abdominal Anatomy on the Measurement of Bone Mineral Density With Dual-Energy X-Ray Absorptiometry. J Comput Assist Tomogr 2021; 45:458-462. [PMID: 34297515 DOI: 10.1097/rct.0000000000001158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to assess the effects of abdominal fat content and anatomical changes on the measurement of bone mineral density using dual-energy X-ray absorptiometry (DXA). MATERIALS AND METHODS The bone mineral density measurements were performed with quantitative computed tomography for patients who underwent DXA and abdominal CT on the same day. The effects of abdominal fat content and anatomic changes on the results of DXA were assessed. RESULTS Of the 43 patients, 88.3% were women, 11.7% were men, and the mean age was 55.6 years (range, 32-72). There was a significant relationship between the error in the measurement of T-scores with DXA and osteophytic new bone formation (P = 0.011). There were significant relationships between the error in detecting osteoporosis with DXA and osteophytic new bone formation, facet joint degeneration, and aortic calcification (P < 0.05). CONCLUSIONS Abdominal fat content does not significantly affect T-scores. However, DXA can give false-negative results in detecting osteoporosis, especially in patients with osteophyte new bone formation, facet joint degeneration, and aortic calcifications, all conditions primarily in elderly patients. In these cases, it is more appropriate to use quantitative computed tomography instead of DXA.
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Jensen VFH, Mølck AM, Dalgaard M, McGuigan FE, Akesson KE. Changes in bone mass associated with obesity and weight loss in humans: Applicability of animal models. Bone 2021; 145:115781. [PMID: 33285255 DOI: 10.1016/j.bone.2020.115781] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/05/2020] [Accepted: 11/27/2020] [Indexed: 12/21/2022]
Abstract
The implications of obesity and weight loss for human bone health are not well understood. Although the bone changes associated with weight loss are similar in humans and rodents, that is not the case for obesity. In humans, obesity is generally associated with increased bone mass, an outcome which is exacerbated by advanced age and menopause. In rodents, by contrast, bone mass decreases in proportion to severity and duration of obesity, and is influenced by sex, age and mechanical load. Despite these discrepancies, rodents are frequently used to model the situation in humans. In this review, we summarise the existing knowledge of the effects of obesity and weight loss on bone mass in humans and rodents, focusing on the translatability of findings from animal models. We then describe how animal models should be used to broaden the understanding of the relationship between obesity, weight loss, and skeletal health in humans. Specifically, we highlight the aspects of study design that should be considered to optimise translatability of the rodent models of obesity and weight loss. Notably, the sex, age, and nutritional status of the animals should ideally match those of interest in humans. With these caveats in mind, and depending on the research question asked, our review underscores that animal models can provide valuable information for obesity and weight-management research.
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Affiliation(s)
- Vivi F H Jensen
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden.
| | - Anne-Marie Mølck
- Novo Nordisk A/S, Department of Safety Sciences, Imaging & Data Management, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Majken Dalgaard
- Novo Nordisk A/S, Department of Safety Sciences, Imaging & Data Management, Novo Nordisk Park 1, 2760 Maaloev, Denmark
| | - Fiona E McGuigan
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden
| | - Kristina E Akesson
- Lund University, Department of Clinical Sciences Malmö and Skåne University Hospital, Department of Orthopedics, Inga Marie Nilssons Gata 22, 205 02 Malmö, Sweden
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Bühler J, Rast S, Beglinger C, Peterli R, Peters T, Gebhart M, Meyer-Gerspach AC, Wölnerhanssen BK. Long-Term Effects of Laparoscopic Sleeve Gastrectomy and Roux-en-Y Gastric Bypass on Body Composition and Bone Mass Density. Obes Facts 2021; 14:131-140. [PMID: 33333510 PMCID: PMC7983539 DOI: 10.1159/000512450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/12/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Currently, the two most common bariatric procedures are laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). Long-term data comparing the two interventions in terms of their effect on body composition and bone mass density (BMD) are scarce. OBJECTIVE The aim of this study was to assess body composition and BMD at least 5 years after LSG and LRYGB. SETTING Department of Endocrinology and Nutrition, St. Claraspital Basel and St. Clara Research Ltd., Basel, Switzerland. METHODS Bariatric patients at least 5 years after surgery (LSG or LRYGB) were recruited, and body composition and BMD were measured by means of dual-energy X-ray absorptiometry. Data from body composition before surgery were included in the analysis. Blood samples were taken for determination of plasma calcium, parathyroid hormone, vitamin D3, alkaline phosphatase, and C-terminal telopeptide, and the individual risk for osteoporotic fracture assessed by the Fracture Risk Assessment Tool score was calculated. After surgery, all patients received multivitamins, vitamin D3, and zinc. In addition, LRYGB patients were prescribed calcium. RESULTS A total of 142 patients were included, 72 LSG and 70 LRYGB, before surgery: median body mass index 43.1, median age 45.5 years, 62.7% females. Follow-up after a median of 6.7 years. For LRYGB, the percentage total weight loss at follow-up was 26.3% and for LSG 24.1% (p = 0.243). LRYGB led to a slightly lower fat percentage in body composition. At follow-up, 45% of both groups had a T score at the femoral neck below -1, indicating osteopenia. No clinically relevant difference in BMD was found between the groups. CONCLUSIONS At 6.7 years after surgery, no difference in body composition and BMD between LRYGB and LSG was found. Deficiencies and bone loss remain an issue after both interventions and should be monitored.
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Affiliation(s)
- Julian Bühler
- St. Clara Research Ltd., St. Claraspital, Basel, Switzerland
- University of Basel, Basel, Switzerland
- Clarunis, Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Basel, Switzerland
| | - Silvan Rast
- St. Clara Research Ltd., St. Claraspital, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | | | - Ralph Peterli
- St. Clara Research Ltd., St. Claraspital, Basel, Switzerland
- University of Basel, Basel, Switzerland
- Clarunis, Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Basel, Switzerland
| | - Thomas Peters
- Endocrinology and Nutrition, St. Claraspital, Basel, Switzerland
| | - Martina Gebhart
- Endocrinology and Nutrition, St. Claraspital, Basel, Switzerland
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Mori C, Sheehan D, Graor CH, Petrinec A. A scoping review of the phenomenon of osteoporosis in post bariatric surgical patients. Int J Orthop Trauma Nurs 2020; 40:100835. [PMID: 33272902 DOI: 10.1016/j.ijotn.2020.100835] [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: 07/09/2020] [Revised: 11/09/2020] [Accepted: 11/15/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Risk factors, preventive treatment, and increased prevalence of fragility fractures in post-bariatric surgical patients have been researched, however, little is known about how patients' perspectives of osteoporosis risk determine their commitment to bone health. PURPOSE The purpose of this review was to provide an overview and appraisal of the research regarding osteoporosis in post bariatric surgical patients, as well as to identify gaps in the literature in this area. METHODS Data bases searched included OVID Medline, CINAHL, and EMBASE which included ahead of print articles that had not yet been indexed. Relevant key words were used independently and in combination: "osteoporosis," "morbid obesity," and "bariatric surgery." RESULTS A total of 24 quantitative studies and 15 qualitative studies were retrieved for this review; none of the qualitative studies examined both osteoporosis and bariatric surgery. CONCLUSION The current trend in bariatric surgical patients regarding osteoporosis is to examine the degree of bone loss based on significant influences including extent of weight loss, years since surgery, type of procedure performed, and subject selection. Patient perceptions about osteoporosis risk after bariatric surgery were rarely addressed.
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Affiliation(s)
- Candace Mori
- Nursing and Nursing Education, 210 Skyveiw Circle, Dalton, Ohio, USA.
| | - Denice Sheehan
- Kent State University College of Nursing, 10358 Hanford Lane, Twinsburg, OH, 44087, USA.
| | | | - Amy Petrinec
- Kent State University College of Nursing, 2760 Hawkesbury Boulevard, Hudson, OH, 44236, USA.
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Lindeman KG, Rushin CC, Cheney MC, Bouxsein ML, Hutter MM, Yu EW. Bone Density and Trabecular Morphology at Least 10 Years After Gastric Bypass and Gastric Banding. J Bone Miner Res 2020; 35:2132-2142. [PMID: 32663365 DOI: 10.1002/jbmr.4112] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 05/11/2020] [Accepted: 06/07/2020] [Indexed: 12/20/2022]
Abstract
Roux-en-Y gastric bypass (RYGB) instigates high-turnover bone loss in the initial 5 years after surgery, whereas skeletal changes after adjustable gastric banding (AGB) are less pronounced. Long-term skeletal data are scarce, and the mechanisms of bone loss remain unclear. We sought to examine bone density and microarchitecture in RYGB and AGB patients a decade after surgery and to determine whether prior published reports of bone loss represent an appropriate adaptation to new postsurgical weight. In this cross-sectional study, 25 RYGB and 25 AGB subjects who had bariatric surgery ≥10 years ago were matched 1:1 with nonsurgical controls for age, sex, and current body mass index (BMI). We obtained bone mineral density (BMD) by dual-energy X-ray absorptiometry (DXA), volumetric BMD and microarchitecture by high-resolution peripheral quantitative computed tomography (HR-pQCT), trabecular morphology by individual trabecular segmentation, and metabolic bone laboratory results. As compared with BMI-matched controls, RYGB subjects had significantly lower hip BMD, and lower total volumetric BMD at the distal radius and tibia. Substantial deficits in cortical and trabecular microarchitecture were observed in the RYGB group compared to controls, with reduced trabecular plate bone volume fraction and estimated failure load at both the radius and tibia, respectively. Bone turnover markers CTX and P1NP were 99% and 77% higher in the RYGB group than controls, respectively, with no differences in serum calcium, 25-hydroxyvitamin D, or parathyroid hormone. In contrast, the AGB group did not differ from their BMI-matched controls in any measured bone density, microarchitecture, or laboratory parameter. Thus, RYGB, but not AGB, is associated with lower than expected hip and peripheral BMD for the new weight setpoint, as well as deleterious changes in bone microarchitecture. These findings suggest that pathophysiologic processes other than mechanical unloading or secondary hyperparathyroidism contribute to bone loss after RYGB, and have important clinical implications for the long-term care of RYGB patients. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
| | - Claire C Rushin
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA
| | | | - Mary L Bouxsein
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,Department of Orthopedic Surgery, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Matthew M Hutter
- Harvard Medical School, Boston, MA, USA.,Department of Surgery, Weight Center, Massachusetts General Hospital, Boston, MA, USA
| | - Elaine W Yu
- Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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9
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Sleeve gastrectomy-induced endocrine changes in the remnant stomachs of premenopausal and postmenopausal rats: role of the estrogen receptors. Surg Obes Relat Dis 2020; 17:193-207. [PMID: 33011072 DOI: 10.1016/j.soard.2020.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/02/2020] [Accepted: 08/12/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Although alterations in the plasma levels of leptin, glucagon-like peptide-1, and gastrin were linked with bariatric surgery outcomes, gastric production of these peptides was not elucidated before. OBJECTIVE The aim was to evaluate the impact of estrogen depletion and estrogen receptors (ERs) on sleeve gastrectomy (SG)-induced alterations in gastric hormone production, gastric mucosal integrity, and bone mass. SETTING Physiology Research Lab at the University. METHODS Female Sprague-Dawley rats underwent ovariectomy or sham operation (control), and 2 months later SG or sham SG was performed. Rats received either nonselective agonist 17 β, ER-α agonist, ER-β agonist, or vehicle for 3 weeks. Trunk blood and gastric tissues were collected for biochemical measurements, while histopathologic examination was performed in gastric and femur samples. RESULTS In the presence of intact ovaries, SG-induced weight loss was accompanied by reductions in the gastric synthesis of leptin and gastrin, while gastric glucagon-like peptide-1 was additionally decreased when SG was performed at the postmenopausal state. SG elevated the depleted serum estradiol levels of menopause, implicating a beneficial effect, but the occurrence of severe gastric mucosal injury was triggered. On the other hand, using ER agonists upregulated gastrin-expressing cells, ameliorated gastric injury, and improved bone loss. CONCLUSIONS SG, either at premenopausal or postmenopausal state, resulted in considerable loss in bone mass, along with reductions in the gastric levels of gastrin and leptin. Functional status of the ovaries needs to be taken into consideration when monitoring the outcomes of SG, and ER agonists could be of value in controlling SG-induced complications.
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10
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Yu EW, Kim SC, Sturgeon DJ, Lindeman KG, Weissman JS. Fracture Risk After Roux-en-Y Gastric Bypass vs Adjustable Gastric Banding Among Medicare Beneficiaries. JAMA Surg 2020; 154:746-753. [PMID: 31090893 DOI: 10.1001/jamasurg.2019.1157] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Importance Roux-en-Y gastric bypass (RYGB) is associated with significant bone loss and may increase fracture risk, whereas substantial bone loss and increased fracture risk have not been reported after adjustable gastric banding (AGB). Previous studies have had little representation of patients aged 65 years or older, and it is currently unknown how age modifies fracture risk. Objective To compare fracture risk after RYGB and AGB procedures in a large, nationally representative cohort enriched for older adults. Design, Setting, and Participants This population-based retrospective cohort analysis used Medicare claims data from January 1, 2006, to December 31, 2014, from 42 345 severely obese adults, of whom 29 624 received RYGB and 12 721 received AGB. Data analysis was performed from April 2017 to November 2018. Main Outcomes and Measures The primary outcome was incident nonvertebral (ie, wrist, humerus, pelvis, and hip) fractures after RYGB and AGB surgery defined using a combination of International Classification of Diseases, Ninth Edition and Current Procedural Terminology 4 codes. Results Of 42 345 participants, 33 254 (78.5%) were women. With a mean (SD) age of 51 (12) years, recipients of RYGB were younger than AGB recipients (55 [12] years). Both groups had similar comorbidities, medication use, and health care utilization in the 365 days before surgery. Over a mean (SD) follow-up of 3.5 (2.1) years, 658 nonvertebral fractures were documented. The fracture incidence rate was 6.6 (95% CI, 6.0-7.2) after RYGB and 4.6 (95% CI, 3.9-5.3) after AGB, which translated to a hazard ratio (HR) of 1.73 (95% CI, 1.45-2.08) after multivariable adjustment. Site-specific analyses demonstrated an increased fracture risk at the hip (HR, 2.81; 95% CI, 1.82-4.49), wrist (HR, 1.70; 95% CI, 1.33-2.14), and pelvis (HR, 1.48; 95% CI, 1.08-2.07) among RYGB recipients. No significant interactions of fracture risk with age, sex, diabetes status, or race were found. In particular, adults 65 years and older showed similar patterns of fracture risk to younger adults. Sensitivity analyses using propensity score matching showed similar results (nonvertebral fracture: HR 1.75; 95% CI, 1.22-2.52). Conclusions and Relevance This study of a large, US population-based cohort including a substantial population of older adults found a 73% increased risk of nonvertebral fracture after RYGB compared with AGB, including increased risk of hip, wrist, and pelvis fractures. Fracture risk was consistently increased among RYGB patients vs AGB across different subgroups, and to a similar degree among older and younger adults. Increased fracture risk appears to be an important unintended consequence of RYGB.
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Affiliation(s)
- Elaine W Yu
- Endocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Seoyoung C Kim
- Division of Pharmacoepidemiology and Pharmacoeconomics; Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Division of Rheumatology, Immunology and Allergy; Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel J Sturgeon
- Center for Surgery and Public Health; Brigham and Women's Hospital,Harvard Medical School, Boston, Massachusetts
| | - Katherine G Lindeman
- Endocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Joel S Weissman
- Center for Surgery and Public Health; Brigham and Women's Hospital,Harvard Medical School, Boston, Massachusetts
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11
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Corbeels K, Verlinden L, Lannoo M, Khalil R, Deleus E, Mertens A, Matthys C, Verstuyf A, Meulemans A, Vangoitsenhoven R, Carmeliet G, Van der Schueren B. The curious fate of bone following bariatric surgery: bone effects of sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) in mice. Int J Obes (Lond) 2020; 44:2165-2176. [PMID: 32546862 DOI: 10.1038/s41366-020-0626-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 05/12/2020] [Accepted: 06/01/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Bone loss and increased fracture risk following bariatric surgery has been reported. We investigated whether the two most commonly performed surgeries, sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), lead to bone loss. In addition, we examined whether fortification of the diet with calcium citrate prevents bone loss. METHODS We used mouse models for SG and RYGB and compared bone loss with a group of sham mice with similar weight loss. All groups were switched at the time of surgery to a low-fat diet (LFD). We also examined whether fortification of the diet with calcium citrate and vitamin D was able to prevent bone loss. RESULTS At 2 weeks we observed no major bone effects. However, at 8 weeks, both trabecular and cortical bone were lost to the same extent after SG and RYGB, despite increased calcium absorption and adequate serum levels of calcium, vitamin D, and parathyroid hormone (PTH). Diet fortification with calcium citrate and vitamin D was able to partially prevent bone loss. CONCLUSIONS Both SG and RYGB lead to excess bone loss, despite intestinal adaptations to increase calcium absorption. Fortifying the diet with calcium citrate and vitamin D partly prevented the observed bone loss. This finding emphasizes the importance of nutritional support strategies after bariatric surgery, but also affirms that the exact mechanisms leading to bone loss after bariatric surgery remain elusive and thus warrant further research.
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Affiliation(s)
- Katrien Corbeels
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.
| | - Lieve Verlinden
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Matthias Lannoo
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Abdominal Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Rougin Khalil
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Ellen Deleus
- Department of Abdominal Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Ann Mertens
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Christophe Matthys
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Annemieke Verstuyf
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Ann Meulemans
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Roman Vangoitsenhoven
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Geert Carmeliet
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium
| | - Bart Van der Schueren
- Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
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12
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Khalid SI, Omotosho PA, Spagnoli A, Torquati A. Association of Bariatric Surgery With Risk of Fracture in Patients With Severe Obesity. JAMA Netw Open 2020; 3:e207419. [PMID: 32520360 PMCID: PMC7287567 DOI: 10.1001/jamanetworkopen.2020.7419] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
IMPORTANCE Given the complex relationship between body mass index, body composition, and bone density and the correlative nature of the studies that have established the prevailing notion that higher body mass indices may be protective against osteopenia and osteoporosis and, therefore, fracture, the absolute risk of fracture in patients with severe obesity who undergo either Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy (SG) compared with those who do not undergo bariatric surgery is unknown. OBJECTIVE To assess the rates of fractures associated with obesity and compare rates between those who do not undergo bariatric surgery, those who undergo RYGB, and those who undergo SG. DESIGN, SETTING, AND PARTICIPANTS In this retrospective multicenter cohort study of Medicare Standard Analytic Files derived from Medicare parts A and B records from January 2004 to December 2014, patients classified as eligible for bariatric surgery using the US Centers of Medicare & Medicaid criteria who either did not undergo bariatric surgery or underwent RYGB or SG were exactly matched in a 1:1 fashion based on their age, sex, Elixhauser Comorbidity Index, hypertension, smoking status, nonalcoholic fatty liver disease, hyperlipidemia, type 2 diabetes, osteoporosis, osteoarthritis, and obstructive sleep apnea status. Data were analyzed from November to December 2019. EXPOSURES RYGB or SG. MAIN OUTCOMES AND MEASURES The primary outcome measured in this study was the odds of fracture overall based on exposure to bariatric surgery. Secondary outcomes included the odds of type of fracture (humerus, radius or ulna, pelvis, hip, vertebrae, and total fractures) based on exposure to bariatric surgery. RESULTS A total of 49 113 patients were included and were equally made up of 16 371 bariatric surgery-eligible patients who did not undergo weight loss surgery, 16 371 patients who had undergone RYGB, and 16 371 patients who had undergone SG. Each group consisted of an equal number of 4109 men (25.1%) and 12 262 women (74.9%) and had an equal distribution of ages, with 11 780 patients (72.0%) 64 years or younger, 4230 (25.8%) aged 65 to 69 years, 346 (2.1%) aged 70 to 74 years, and 15 (0.1%) aged 75 to 79 years. Patients undergoing RYGB were found to have no significant difference in odds of fractures compared with bariatric surgery-eligible patients who did not undergo surgery. Patients undergoing undergone SG were found to have decreased odds of fractures of the humerus (odds ratio [OR], 0.57; 95% CI, 0.45-0.73), radius or ulna (OR, 0.38; 95% CI, 0.25-0.58), hip (OR, 0.49; 95% CI, 0.33-0.74), pelvis (OR, 0.34; 95% CI, 0.18-0.64), vertebrae (OR, 0.60; 95% CI, 0.48-0.74), or fractures in general (OR, 0.53; 95% CI, 0.46-0.62). Compared with patients undergoing SG, patients undergoing RYGB had a significantly greater risk of total fractures (OR, 1.79; 95% CI, 1.55-2.06) and humeral fractures (OR, 1.60; 95% CI, 1.24-2.07). CONCLUSIONS AND RELEVANCE In this cohort study, bariatric surgery was associated with a reduced risk of fracture in bariatric surgery-eligible patients. Sleeve gastrectomy might be the best option for weight loss in patients in which fractures could be a concern, as RYGB may be associated with an increased fracture risk compared with SG.
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Affiliation(s)
- Syed I. Khalid
- Department of Surgery, Rush University Medical Center, Chicago, Illinois
| | - Philip A. Omotosho
- Department of Surgery, Rush University Medical Center, Chicago, Illinois
| | - Anna Spagnoli
- Department of Surgery, Rush University Medical Center, Chicago, Illinois
| | - Alfonso Torquati
- Department of Surgery, Rush University Medical Center, Chicago, Illinois
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13
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Saad R, Habli D, El Sabbagh R, Chakhtoura M. Bone Health Following Bariatric Surgery: An Update. J Clin Densitom 2020; 23:165-181. [PMID: 31519474 DOI: 10.1016/j.jocd.2019.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/02/2019] [Accepted: 08/05/2019] [Indexed: 12/13/2022]
Abstract
Obesity rates are increasing rapidly, and bariatric surgery is currently the most effective tool for weight loss. Recently, bariatric surgery induced bone loss has gained attention. Such detrimental effect on bone is multifactorial and causes may include nutrient deficiencies, gut and gonadal hormonal changes, mechanical unloading, loss of lean mass, increased bone marrow fat, and increased risk of fall. This review describes the available evidence on bone loss and fracture risk following bariatric surgery and summarizes the guidelines on the topic. Increased bone resorption starts early postsurgery, and bone markers peak at 1-2 yr. Across studies, the drop in areal bone mineral density is inconsistent at the lumbar spine, while a 2%-5% drop at 6 mo and a 6%-10.5% at 9-12 mo are observed at the total hip. Conversely, studies using quantitative CT showed a 6%-7% decrease in volumetric bone mineral density at the lumbar spine at 6-12 mo postsurgery. These studies also report significant bone loss at the radius and tibia, in addition to alteration in bone microarchitecture. Fracture risk increases 2 yr after surgery, more so following malabsorptive procedures. Fractures were reported at axial, weight bearing sites and at appendicular sites. The available evidence is very heterogeneous, and mostly derived from studies on Roux-en-y gastric bypass in premenopausal women. Data on restrictive procedures is scarce. Our findings suggest that the early postoperative phase represents the "golden window" to intervene and promote bone health. More research is needed to determine the effect of different bariatric procedures on bone, to identify optimal interventions to prevent bone loss and to characterize high risk individuals who should be targeted.
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Affiliation(s)
- Randa Saad
- Calcium Metabolism and Osteoporosis Program, WHO Collaborating Center for Metabolic Bone Disorders, Division of Endocrinology and Metabolism, Department of Internal Medicine-American University of Beirut Medical Center, Beirut, Lebanon
| | - Dalal Habli
- Department of Internal Medicine - American University of Beirut Medical Center, Beirut, Lebanon
| | - Rawaa El Sabbagh
- Department of Internal Medicine - American University of Beirut Medical Center, Beirut, Lebanon
| | - Marlene Chakhtoura
- Calcium Metabolism and Osteoporosis Program, WHO Collaborating Center for Metabolic Bone Disorders, Division of Endocrinology and Metabolism, Department of Internal Medicine-American University of Beirut Medical Center, Beirut, Lebanon.
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14
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Luhrs AR, Davalos G, Lerebours R, Yoo J, Park C, Tabone L, Omotosho P, Torquati A, Portenier D, Guerron AD. Determining changes in bone metabolism after bariatric surgery in postmenopausal women. Surg Endosc 2020; 34:1754-1760. [PMID: 31209602 PMCID: PMC7373333 DOI: 10.1007/s00464-019-06922-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/12/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Accelerated bone loss is a known complication after bariatric surgery. Bone mineral density has been shown to decrease significantly after Laparoscopic Roux-en-Y gastric bypass (RYGB). Laparoscopic sleeve gastrectomy (SG) effects on bone density are largely unknown. This should be considered for those with increased preoperative risk for bone loss, such as postmenopausal females. METHODS This prospective clinical trial included postmenopausal patients, with BMI ≥ 35 k/m2, being evaluated for either RYGB or SG. Patients with history of osteoporosis, estrogen hormone replacement therapy, active smoking, glucocorticoid use, or weight > 295 lb were excluded. Patients underwent DEXA scans preoperatively and 1 year postoperatively with measurement of total body bone mineral density (BMD) and bone mineral content (BMC) as well as regional site-specific BMD and BMC. RESULTS A total of 28 patients were enrolled. 16 (57.1%) patients underwent RYGB and 12 (42.9%) patients underwent SG. Median preoperative BMI was 44.2 k/m2 (IQR 39.9, 46.6). Median change in BMI at 12 months was - 11.3 k/m2 (IQR - 12.8, - 7.9). A significant reduction in total body BMC was seen when comparing preoperative measurements to postoperative measurements (2358.32 vs 2280.68 grams; p = 0.002). Regional site BMC and BMD significantly decreased in the ribs and spine postoperatively (p = < 0.02) representing the greatest loss in the axial skeleton. Comparing those who underwent RYGB to SG there was no significant difference between the two groups when evaluating changes in total or regional site BMD. CONCLUSION Postmenopausal women were found to have decreased BMD and BMC after RYGB and SG, suggesting that high-risk women may benefit from postoperative DEXA screening. Further study is needed to determine the clinical significance of these findings. It is unknown if these changes in BMD are due to modifiable factors (Vitamin D level, activity level, hormone status, etc.), and whether BMD and BMC is recovered beyond 1 year.
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Affiliation(s)
- Andrew R Luhrs
- Department of Surgery, Duke University Medical Center, 407 Crutchfield St, Durham, NC, 27704, USA
| | - Gerardo Davalos
- Department of Surgery, Duke University Medical Center, 407 Crutchfield St, Durham, NC, 27704, USA
| | - Reginald Lerebours
- Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA
| | - Jin Yoo
- Department of Surgery, Duke University Medical Center, 407 Crutchfield St, Durham, NC, 27704, USA
| | - Chan Park
- Department of Surgery, Tripler Army Medical Center, Honolulu, HI, USA
| | - Lawrence Tabone
- Department of Surgery, West Virginia University, Morgantown, WV, USA
| | | | | | - Dana Portenier
- Department of Surgery, Duke University Medical Center, 407 Crutchfield St, Durham, NC, 27704, USA
| | - Alfredo D Guerron
- Department of Surgery, Duke University Medical Center, 407 Crutchfield St, Durham, NC, 27704, USA.
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15
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Tangalakis LL, Tabone L, Spagnoli A, Muehlbauer M, Omotosho P, Torquati A. Effects of Roux-en-Y Gastric Bypass on Osteoclast Activity and Bone Density in Morbidly Obese Patients with Type 2 Diabetes. Obes Surg 2020; 30:290-295. [PMID: 31471767 PMCID: PMC7515205 DOI: 10.1007/s11695-019-04154-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Roux-en-Y gastric bypass (RYGB) is a well-established treatment for morbid obesity and type 2 diabetes. The effects of RYGB on bone metabolism and bone health are largely unknown. OBJECTIVE Determine the changes in osteoclast function and bone density 1 year after RYGB as compared with a control group undergoing a diabetes support and education program (DSE). DESIGN A prospective cohort study with patients matched for weight and age assigned to RYGB or DSE. SETTING Large academic institution. PATIENTS OR OTHER PARTICIPANTS Patients with type 2 diabetes mellitus and morbid obesity (body mass index greater than 35 kg/m2). INTERVENTION Subjects either received laparoscopic RYBG or DSE, which consisted of nutritional, exercise, and dietary counseling performed by a certified diabetic educator and a nutritionist three times over a year. MAIN OUTCOME MEASURE Osteoclast activity, bone mineral density. RESULTS One year after, intervention subjects undergoing RYGB have a 280% increase in osteoclast activity as compared with a 7.6% increase in the DSE control group (P < 0.001). Furthermore, there was a statistically significant increase in sclerostin levels in subjects undergoing RYGB compared with an increase in the control group. The total bone mineral density was statistically unchanged within 1 year of intervention in both groups. A statistically significant decrease in bone mineral density in the left ribs (decrease of 6.8%, P < 0.05) and lumbar spine (decrease of 4.0%, P < 0.05) was seen 1 year after RYGB. CONCLUSIONS There is a significant increase in osteoclast activity observed 1 year after RYGB; the long-term clinical implications of this increased bone metabolism are unknown.
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Affiliation(s)
- Laurel L Tangalakis
- Department of Surgery, Rush University Medical Center, 1750 W Harrison St, 791 Jelke, Chicago, IL, 60612, USA.
| | - Lawrence Tabone
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Anna Spagnoli
- Department of Surgery, Rush University Medical Center, 1750 W Harrison St, 791 Jelke, Chicago, IL, 60612, USA
| | - Mike Muehlbauer
- Sarah W. Steadman Nutrition and Metabolism Center, Duke University Medical Center, Durham, North Carolina, USA
| | - Philip Omotosho
- Department of Surgery, Rush University Medical Center, 1750 W Harrison St, 791 Jelke, Chicago, IL, 60612, USA
| | - Alfonso Torquati
- Department of Surgery, Rush University Medical Center, 1750 W Harrison St, 791 Jelke, Chicago, IL, 60612, USA
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16
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Increased Risk of Osteoporotic Fracture in Postgastrectomy Gastric Cancer Survivors Compared With Matched Controls: A Nationwide Cohort Study in Korea. Am J Gastroenterol 2019; 114:1735-1743. [PMID: 31658122 DOI: 10.14309/ajg.0000000000000436] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Gastrectomy can lead to bone loss. Previous studies have suggested that there is an increased risk of fracture in gastric cancer survivors. However, these studies were performed without proper control groups. Therefore, we used Korean national health insurance data to compare the fracture risk in gastric cancer survivors who received gastrectomy to that of the general population. METHODS A total of 133,179 gastric cancer survivors were included and matched to noncancer controls using 1:1 propensity score matching. Cox proportional hazards regression analysis was used to determine the relative risk of fracture between the gastric cancer survivors and matched controls. We also examined the factors associated with fracture in gastric cancer survivors. RESULTS Compared with the matched controls, gastric cancer survivors had an elevated risk of osteoporotic fracture (hazard ratio [HR] 1.61, 95% confidence interval [CI] 1.53-1.70), which was most prominent in patients who underwent total gastrectomy (HR 2.18, 95% CI 1.96-2.44) and adjuvant chemotherapy (HR 2.01, 95% CI 1.81-2.23). In multivariate analysis, anemia was significantly associated with increased fracture risk (aHR 1.34, 95% CI 1.13-1.59), while decrease in weight >5% was not (aHR 1.06, 95% CI 0.89-1.25). DISCUSSION Gastric cancer survivors who underwent gastrectomy had an increased osteoporotic fracture risk than did matched controls. Total gastrectomy, adjuvant chemotherapy, and anemia were associated with an even higher risk in these patients. Additional studies are needed to establish optimal strategies, such as screening for osteoporosis and preventive interventions, that will reduce fracture risk in this population.
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17
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Tian Z, Fan XT, Li SZ, Zhai T, Dong J. Changes in Bone Metabolism After Sleeve Gastrectomy Versus Gastric Bypass: a Meta-Analysis. Obes Surg 2019; 30:77-86. [DOI: 10.1007/s11695-019-04119-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Casimiro I, Sam S, Brady MJ. Endocrine implications of bariatric surgery: a review on the intersection between incretins, bone, and sex hormones. Physiol Rep 2019; 7:e14111. [PMID: 31134746 PMCID: PMC6536581 DOI: 10.14814/phy2.14111] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/08/2019] [Accepted: 05/08/2019] [Indexed: 12/25/2022] Open
Abstract
Bariatric surgery is now the most widely used intervention for the treatment of human obesity. A large body of literature has demonstrated its efficacy in sustained weight loss and improvement in its associated comorbidities. Here, we review the effect of bariatric surgery in gut hormone physiology, bone remodeling and the reproductive axis. Rapid improvements in insulin release and sensitivity appear to be weight loss independent and occur immediately after surgery. These effects on pancreatic beta cells are mostly due to increased gut hormone secretion due to augmented nutrient delivery to the small intestine. Bone remodeling is also affected by gut hormones. Phenotypic skeletal changes observed in mice deficient in GLP-1 or GIP suggest that increased incretins may improve bone density. However, these positive effects may be counterbalanced by the association between weight loss and a reduction in bone density. Finally, studies have shown a marked improvement following bariatric surgery in infertility and PCOS in women and hypogonadism in men. Thus, the net effect on endocrine systems after bariatric surgery will likely vary on an individual basis and depend on factors such as comorbidities, peri-menopausal state, amount of weight loss, and likelihood to adhere to vitamin supplementation after surgery.
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Affiliation(s)
- Isabel Casimiro
- Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Susan Sam
- Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Matthew J. Brady
- Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
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19
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Elliott JA, Casey S, Murphy CF, Docherty NG, Ravi N, Beddy P, Reynolds JV, le Roux CW. Risk factors for loss of bone mineral density after curative esophagectomy. Arch Osteoporos 2019; 14:6. [PMID: 30627886 DOI: 10.1007/s11657-018-0556-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/20/2018] [Indexed: 02/07/2023]
Abstract
UNLABELLED Micronutrient and fat malabsorption and altered enteroendocrine signaling occur after esophagectomy for cancer; however, the impact of malnutrition on bone health in this cohort has not been previously investigated. In this study, the prevalence of osteoporosis increased after curative surgery, associated with disease-specific, treatment-related, and population risk factors. PURPOSE Improved oncologic outcomes in esophageal cancer (EC) have resulted in increased survivorship and a focus on long-term quality of life. Malnutrition and micronutrient malabsorption are common among patients with EC, but the effect on bone metabolism is not known. The aim of this study was to characterize changes in bone mineral density (BMD) following curative esophagectomy. METHODS Consecutive disease-free patients who underwent esophagectomy with gastric conduit for pathologically node-negative disease from 2000 to 2014 were included. BMD was assessed at vertebral levels T12-L5 by computed tomography using a simple trabecular region-of-interest attenuation technique, and serum markers of nutritional status and bone metabolism were examined. Independent risk factors for osteoporosis were identified by multivariable logistic regression. RESULTS Seventy-five consecutive patients were studied. Osteoporosis was present in 25% at diagnosis. BMD declined at 1 and 2 years postoperatively (144.3 ± 45.8 versus 128.6 ± 46.2 and 122.7 ± 43.5 Hounsfield Units (HU), P < 0.0001), with increased osteoporosis prevalence to 38% and 44% (P = 0.049), respectively. No significant postoperative change in vitamin D, calcium, or phosphate was observed, but alkaline phosphatase increased significantly (P < 0.001). While female sex (P = 0.004) and ASA grade (P = 0.043) were independently associated with osteoporosis at diagnosis, age (P = 0.050), female sex (P = 0.023), smoking (P = 0.024), and pathologic T stage (P = 0.023) were independently predictive of osteoporosis at 1 year postoperatively. CONCLUSIONS Osteoporosis is prevalent among disease-free patients post-esophagectomy for EC, associated with disease-specific, treatment-related, and population risk factors. Strategies which minimize BMD decline should be considered to avoid fragility fractures in this cohort.
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Affiliation(s)
- Jessie A Elliott
- Metabolic Medicine, University College Dublin, Conway Institute of Biomedical and Biomolecular Research, Dublin 4, Ireland.,Department of Surgery, Trinity Centre for Health Sciences, Trinity College Dublin and St. James's Hospital, Dublin 8, Ireland
| | - Sean Casey
- Department of Surgery, Trinity Centre for Health Sciences, Trinity College Dublin and St. James's Hospital, Dublin 8, Ireland
| | - Conor F Murphy
- Metabolic Medicine, University College Dublin, Conway Institute of Biomedical and Biomolecular Research, Dublin 4, Ireland.,Department of Surgery, Trinity Centre for Health Sciences, Trinity College Dublin and St. James's Hospital, Dublin 8, Ireland
| | - Neil G Docherty
- Metabolic Medicine, University College Dublin, Conway Institute of Biomedical and Biomolecular Research, Dublin 4, Ireland.,Department of Gastrosurgical Research and Education, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Narayanasamy Ravi
- Department of Surgery, Trinity Centre for Health Sciences, Trinity College Dublin and St. James's Hospital, Dublin 8, Ireland
| | - Peter Beddy
- Department of Radiology, St. James's Hospital, Dublin 8, Ireland
| | - John V Reynolds
- Department of Surgery, Trinity Centre for Health Sciences, Trinity College Dublin and St. James's Hospital, Dublin 8, Ireland
| | - Carel W le Roux
- Metabolic Medicine, University College Dublin, Conway Institute of Biomedical and Biomolecular Research, Dublin 4, Ireland. .,Department of Gastrosurgical Research and Education, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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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: 56] [Impact Index Per Article: 11.2] [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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Wei JH, Lee WJ, Chong K, Lee YC, Chen SC, Huang PH, Lin SJ. High Incidence of Secondary Hyperparathyroidism in Bariatric Patients: Comparing Different Procedures. Obes Surg 2018; 28:798-804. [PMID: 28921422 DOI: 10.1007/s11695-017-2932-y] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Bariatric surgery is an effective therapy for morbid obesity but may reduce calcium absorption and significantly decrease the bone mineral density. This study examined the prevalence of secondary hyperparathyroidism (SHPT) in obese subjects during follow-up after different bariatric surgeries. We investigated predictors of SHPT. METHODS We enrolled 1470 obese subjects undergoing bariatric/metabolic surgery with at least 1-year follow-up, including 322 patients undergoing Roux-en-Y gastric bypass (RYGB), 695 undergoing single anastomosis (mini-) gastric bypass (SAGB), 93 undergoing laparoscopic adjustable gastric banding (LAGB), and 360 undergoing sleeve gastrectomy (SG). Five years of data were available for 215 patients. Patients were instructed to supplement their diet according to the guideline. Calcium, parathyroid hormone (PTH), and vitamin D levels were measured before surgery and at 1 and 5 years after surgery. SHPT was defined as PTH > 69 pg/mL. RESULTS The overall prevalence of SHPT was high, 21.0% before surgery and was not different between patients with different bariatric procedures. Pre-operative PTH correlated with age, BMI, and vitamin D levels. Multi-variate analysis confirmed that vitamin D level was the only independent predictor of SHPT before surgery. The prevalence of SHPT increased to 35.4% at 1 year after surgery and 63.3% at 5 years after surgery. SAGB had the highest prevalence of SHPT (50.6%) followed by RYGB (33.2%), LAGB (25.8%), and SG (17.8%) at 1 year after surgery. At 5 years after surgery, SAGB still had the highest prevalence of SHPT (73.6%), followed by RYGB (56.6%), LAGB (38.5%), and SG (41.7%). Serum PTH at 1 year after surgery correlated with decreased BMI and weight loss. Multi-variate analysis confirmed that age, sex, calcium level, and bypass procedure were independent predictor of SHPT after surgery. CONCLUSIONS The prevalence of SHPT is high in morbidly obese patients before bariatric surgery which is related to vitamin D deficiency. The prevalence of SHPT increased continually along with the time after bariatric surgery, especially in patients receiving SAGB, followed by RYGB. The supplementation of vitamin D and calcium have to be higher in bypass procedure, especially in malabsorptive procedure.
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Affiliation(s)
- Jih-Hua Wei
- Department of Internal Medicine, Min-Sheng General Hospital, Taoyuan, Taiwan.,Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan.,Department of Nutrition and Health Sciences, School of Healthcare Management, Kai-Nan University, Taoyuan, Taiwan
| | - Wei-Jei Lee
- Department of Surgery, Min-Sheng General Hospital, No. 168, Chin Kuo Road, Tauoyan, Taiwan, Republic of China.
| | - Keong Chong
- Department of Internal Medicine, Min-Sheng General Hospital, Taoyuan, Taiwan
| | - Yi-Chih Lee
- Department of International Business, Chien Hsin University of Science and Technology, Taoyuan, Taiwan
| | - Shu-Chun Chen
- Department of Surgery, Min-Sheng General Hospital, No. 168, Chin Kuo Road, Tauoyan, Taiwan, Republic of China
| | - Po-Hsun Huang
- Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan.,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,Division of Cardiovascular Medicine, Department of Internal medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shing-Jong Lin
- Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan.,Division of Cardiovascular Medicine, Department of Internal medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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22
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Choksi P, Rothberg A, Kraftson A, Miller N, Zurales K, Burant C, Van Poznak C, Peterson M. Weight loss and bone mineral density in obese adults: a longitudinal analysis of the influence of very low energy diets. Clin Diabetes Endocrinol 2018; 4:14. [PMID: 29946482 PMCID: PMC6006774 DOI: 10.1186/s40842-018-0063-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/30/2018] [Indexed: 02/06/2023] Open
Abstract
Background The long-term effect of weight reduction on skeletal health is not well understood. The purpose of this study was to examine the impact of an intensive medical weight loss intervention using very low energy diet (VLED) (~ 800 cal/day) that result in significant changes in body weight, on total body bone mineral density (BMD) over 2 years. Methods We examined the impact of VLED-induced weight loss on BMD and FFM (Fat-free Mass) after 3–6 months and again while in weight maintenance at 2 years in 49 subjects. The effects of absolute and relative rate of weight reduction assessed by change in weight in kilograms were assessed using general linear modeling, with baseline BMD (or FFM) as a covariate, and age, sex and changes in body weight as primary model predictors. Results At the end of 2 years, the average weight loss was greater for men (weight: 23.51 ± 12.5 kg) than women (weight: 16.8 ± 19.2 kg) and BMD loss was greater among women (0.03 ± 0.04 g/cm2 vs 0.01 ± 0.04 g/cm2) (all p < 0.05). After adjusting for baseline BMD, age, and sex, there was a small but significant association between total weight loss and 2-year BMD (β = − 0.001 g/cm2; p = 0.01). Similarly, there was a significant independent association between total weight loss and 2-year FFM (β = − 116.5 g; p < 0.01). Conclusions Despite significant weight loss with VLED, there was only a small loss is BMD.
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Affiliation(s)
- Palak Choksi
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA
| | - Amy Rothberg
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA.,4Department of Nutritional Sciences, University of Michigan, Ann Arbor, USA
| | - Andrew Kraftson
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA
| | - Nicole Miller
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA
| | - Katherine Zurales
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA
| | - Charles Burant
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA.,2Molecular and Integrative Physiology, University of Michigan, Ann Arbor, USA.,4Department of Nutritional Sciences, University of Michigan, Ann Arbor, USA
| | - Catherine Van Poznak
- 1Department of Internal Medicine, University of Michigan, 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48106 USA
| | - Mark Peterson
- 3Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, USA
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23
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Gagnon C, Schafer AL. Bone Health After Bariatric Surgery. JBMR Plus 2018; 2:121-133. [PMID: 30283897 PMCID: PMC6124196 DOI: 10.1002/jbm4.10048] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 03/13/2018] [Accepted: 03/26/2018] [Indexed: 02/06/2023] Open
Abstract
Bariatric surgery results in long-term weight loss and improvement or resolution in obesity-related comorbidities. However, mounting evidence indicates that it adversely affects bone health. This review summarizes clinical research findings about the impact of bariatric surgery on skeletal outcomes. The literature is the largest and strongest for the Roux-en-Y gastric bypass (RYGB) procedure, as RYGB was the most commonly performed bariatric procedure worldwide until it was very recently overtaken by the sleeve gastrectomy (SG). Because SG is a newer procedure, its skeletal effects have not yet been well defined. Epidemiologic studies have now demonstrated an increased risk of fracture after RYGB and biliopancreatic diversion with duodenal switch, both of which include a malabsorptive component. As these epidemiologic data have emerged, patient-oriented studies have elucidated the bone tissue-level changes that may account for the heightened skeletal fragility. Bariatric surgery induces early and dramatic increases in biochemical markers of bone turnover. A notable feature of recent patient-oriented clinical studies is the application of advanced skeletal imaging modalities; studies address the limitations of dual-energy X-ray absorptiometry (DXA) by using quantitative computed tomography (QCT)-based modalities to examine volumetric bone mineral density and compartment-specific density and microstructure. RYGB results in pronounced declines in bone mass at the axial skeleton demonstrated by DXA and QCT, as well as at the appendicular skeleton demonstrated by high-resolution peripheral quantitative computed tomography (HR-pQCT). RYGB has detrimental effects on trabecular and cortical microarchitecture and estimated bone strength. Skeletal changes after RYGB appear early and continue even after weight loss plateaus and weight stabilizes. The skeletal effects of bariatric surgery are presumably multifactorial, and mechanisms may involve nutritional factors, mechanical unloading, hormonal factors, and changes in body composition and bone marrow fat. Clinical guidelines address bone health and may mitigate the negative skeletal effects of surgery, although more research is needed to direct and support such guidelines. © 2018 The Authors. JBMR Plus is published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Claudia Gagnon
- Department of MedicineUniversité LavalQuebec CityCanada
- Endocrinology and Nephrology UnitCHU de Quebec Research CentreQuebec CityCanada
- Institute of Nutrition and Functional FoodsUniversité LavalQuebec CityCanada
- Quebec Heart and Lung Institute Research CentreQuébec CityCanada
| | - Anne L Schafer
- Department of MedicineUniversity of CaliforniaSan FranciscoCAUSA
- Department of Epidemiology and BiostatisticsUniversity of CaliforniaSan FranciscoCAUSA
- Endocrine Research UnitSan Francisco Veterans Affairs Heath Care SystemSan FranciscoCAUSA
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24
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Ben-Porat T, Elazary R, Sherf-Dagan S, Goldenshluger A, Brodie R, Mintz Y, Weiss R. Bone Health following Bariatric Surgery: Implications for Management Strategies to Attenuate Bone Loss. Adv Nutr 2018; 9:114-127. [PMID: 29659692 PMCID: PMC5916426 DOI: 10.1093/advances/nmx024] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/11/2017] [Accepted: 12/18/2017] [Indexed: 01/19/2023] Open
Abstract
Bariatric surgery (BS) is an effective treatment for morbid obesity and its associated comorbidities. Following such a procedure, however, patients are at risk of developing metabolic bone disease owing to the combination of rapid weight loss, severely restricted dietary intake, and reduced intestinal nutrient absorption. Patients undergoing malabsorptive procedures are at a higher risk of postoperative bone health deterioration than those undergoing restrictive procedures; however, studies have demonstrated negative skeletal consequences of restrictive procedures as well. The clinical practice guidelines of some international associations have previously addressed preoperative evaluation and postoperative clinical care in order to maintain bone health in BS patients. Nevertheless, some issues regarding bone health in BS patients remain unclear owing to the lack of relevant randomized clinical trials, including doses of nutritional supplements pre- and post-BS. This review summarizes the current data regarding the skeletal consequences of BS and its mechanisms, with an emphasis on the preventive strategies and nutritional care that may be warranted in order to attenuate bone deterioration following BS.
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Affiliation(s)
- Tair Ben-Porat
- Departments of Nutrition, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
- Department of Human Metabolism and Nutrition, Hebrew University, Jerusalem, Israel
| | - Ram Elazary
- Departments of Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | | | - Ariela Goldenshluger
- Departments of Nutrition, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Ronit Brodie
- Departments of Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Yoav Mintz
- Departments of Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Ram Weiss
- Department of Human Metabolism and Nutrition, Hebrew University, Jerusalem, Israel
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25
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Corbeels K, Verlinden L, Lannoo M, Simoens C, Matthys C, Verstuyf A, Meulemans A, Carmeliet G, Van der Schueren B. Thin bones: Vitamin D and calcium handling after bariatric surgery. Bone Rep 2018; 8:57-63. [PMID: 29955623 PMCID: PMC6019966 DOI: 10.1016/j.bonr.2018.02.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/25/2018] [Accepted: 02/01/2018] [Indexed: 02/06/2023] Open
Abstract
Bariatric surgery has proven to be a valuable treatment option for morbid obesity. However, these procedures can lead to impaired intestinal absorption of calcium and vitamin D, thereby challenging calcium homeostasis and possibly contributing to bone loss leading to an increased fracture risk. Besides calcium and vitamin D malabsorption, hormonal changes occurring after surgery can also be the source of observed bone loss. In this review, first, a case report will be discussed, highlighting the relevance of this topic. Afterwards, changes in bone density and fracture risk, after the two most performed types of bariatric surgery, Sleeve Gastrectomy (SG) and Roux-en-Y Gastric Bypass (RYGB) will be discussed. In addition, we discuss the putative underlying mechanisms leading to bone changes based on both preclinical and clinical observations. Nonetheless, it is clear further research is needed to further elucidate the exact mechanisms of bone loss following bariatric surgery and subsequently identify potential treatment options for bone preservation. Bariatric surgery induces bone loss and leads to increased fracture risk. Bone resorption increases after both SG and, more strongly, after RYGB. Malabsorption and adipose tissue-related hormones likely contribute to bone loss.
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Affiliation(s)
- Katrien Corbeels
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Lieve Verlinden
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Matthias Lannoo
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Caroline Simoens
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium.,KU Leuven, Department of Cellular and Molecular Medicine, Laboratory of Ion Channel Research, VIB Center for Brain and Disease Research, Leuven, Belgium
| | - Christophe Matthys
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Annemieke Verstuyf
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Ann Meulemans
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Geert Carmeliet
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
| | - Bart Van der Schueren
- KU Leuven, Department of Chronic Diseases, Metabolism & Ageing (CHROMETA), Clinical and Experimental Endocrinology, Leuven, Belgium
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26
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Terra CMDO, Simões CF, Mendes AA, Oliveira RP, Dada RP, Mendes VHDS, Locateli JC, Nardo-Junior N. THE RELATION AMONG THE PHYSICAL ACTIVITY LEVEL DURING LEISURE TIME, ANTHROPOMETRY, BODY COMPOSITION, AND PHYSICAL FITNESS OF WOMEN UNDERWENT OF BARIATRIC SURGERY AND AN EQUIVALENT GROUP WITH NO SURGERY. ACTA ACUST UNITED AC 2018; 30:252-255. [PMID: 29340548 PMCID: PMC5793142 DOI: 10.1590/0102-6720201700040006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/19/2017] [Indexed: 01/14/2023]
Abstract
Background: Bariatric surgery is an alternative to the obesity treatment. Aim: To compare anthropometric variables such as body composition and physical
fitness of those who performed Roux-en-Y gastric bypass. Methods: Were evaluated 108 women. They were subdivided in three groups: those who
performed the bariatric surgery by private health insurance (SAS, n=36); by
the public health care (SUS, n=36), and an equivalent group which did not
perform the surgery (NO, n=36). Were performed physical fitness,
anthropometric and body composition tests. Was evaluated the level of
physical activity during the leisure period. Results: Statistically significant differences were observed between the groups
sedentary operated (n=28) and sedentary non-operated (n=13) on anthropometry
and fat percentage, being the highest indexes in the group operated. Conclusion: The level of physical activity showed a positive influence related to
anthropometric variables, body composition of the individuals who performed
the bariatric surgery when compared to the ones non-operated.
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Affiliation(s)
- Caio Machado de Oliveira Terra
- Interdisciplinary Health Sciences Post-graduate `Program, Federal University of São Paulo, Santos, SP.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Caroline Ferraz Simões
- Post-graduate program UEM/UEL, State University of Maringá, Maringá, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Anselmo Alexandre Mendes
- Post-graduate program UEM/UEL, State University of Maringá, Maringá, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Ronano Pereira Oliveira
- Post-graduate program UEM/UEL, State University of Maringá, Maringá, PR.,Federal Tocantins Institute, Araguatins, TO.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Rafaela Pilegi Dada
- Post-graduate program UEM/UEL, State University of Maringá, Maringá, PR.,Educational Bureau, Marialva City Hall, Marialva, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Victor Hugo de Souza Mendes
- Physical Education Department, State University of Maringá, Maringá, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - João Carlos Locateli
- Physical Education Department, State University of Maringá, Maringá, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
| | - Nelson Nardo-Junior
- Physical Education Department, State University of Maringá, Maringá, PR.,Multidisciplinary Center of Obesity Studies, State University of Maringá, Maringá,PR), Brazil
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Marcil G, Bourget-Murray J, Shinde S, Switzer N, Debru E, Church N, Mitchell P, Reso A, Gill RS. The incidence of fractures following bariatric surgery: A systematic review. INTERNATIONAL JOURNAL OF SURGERY OPEN 2018. [DOI: 10.1016/j.ijso.2018.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ko BJ, Myung SK, Cho KH, Park YG, Kim SG, Kim DH, Kim SM. Relationship Between Bariatric Surgery and Bone Mineral Density: a Meta-analysis. Obes Surg 2017; 26:1414-21. [PMID: 26464244 DOI: 10.1007/s11695-015-1928-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND A meta-analysis regarding bone loss after bariatric surgery, designed to compare surgical and nonsurgical groups, has not yet been performed. Therefore, we performed a meta-analysis to compare the differences between bariatric surgical groups and nonoperated controls with regard to bone mineral density. METHODS In March 2015, we performed a review of the literature using PubMed, EMBASE, and the Cochrane Library. The search focused on retrospective and prospective studies, including but not limited to randomized studies published in English. RESULTS Among 1299 studies that were initially screened, ten met the selection criteria. For all types of bariatric surgery, bone density at the femoral neck was lower in the surgical group than in the nonsurgical control group (mean difference [MD] -0.05 g/cm(2); 95 % confidence interval [CI], -0.07 to -0.02; p = 0.001); no difference in bone density was found between the two groups at the lumbar spine (MD -0.01 g/cm(2); 95 % CI -0.07 to 0.05; p = 0.661). The analysis of Roux-en-Y gastric bypass showed similar results. CONCLUSION Bone density at the femoral neck decreased after bariatric surgery, compared to that in nonsurgical controls, whereas bone density at the lumbar spine did not show a difference between groups. Further larger scale studies with comparative nonsurgical controls are warranted to overcome the heterogeneity among studies in this analysis and to add evidence of possible bone loss subsequent to bariatric surgical procedures.
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Affiliation(s)
- Byung-Joon Ko
- Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, 100-742, South Korea
| | - Seung Kwon Myung
- Molecular Epidemiological Branch, Research Institute, National Cancer Center, Goyang, 410-769, South Korea.,Department of Family Medicine, Hospital, National Cancer Center, Goyang, 410-769, South Korea.,Center for Cancer Prevention and Detection, Hospital, National Cancer Center, Goyang, 410-769, South Korea
| | - Kyung-Hwan Cho
- Department of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea
| | - Yong Gyu Park
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Sin Gon Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea
| | - Do Hoon Kim
- Department of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea
| | - Seon Mee Kim
- Department of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea.
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29
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Quilliot D, Sirveaux MA, Ziegler O, Reibel N, Brunaud L. Carences en vitamines, minéraux et éléments traces, et dénutrition après chirurgie de l’obésité. NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2017.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Campanha-Versiani L, Pereira DAG, Ribeiro-Samora GA, Ramos AV, de Sander Diniz MFH, De Marco LA, Soares MMS. The Effect of a Muscle Weight-Bearing and Aerobic Exercise Program on the Body Composition, Muscular Strength, Biochemical Markers, and Bone Mass of Obese Patients Who Have Undergone Gastric Bypass Surgery. Obes Surg 2017; 27:2129-2137. [PMID: 28285470 DOI: 10.1007/s11695-017-2618-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The effect of an exercise program on the body composition, muscular strength (MS), biochemical markers, and bone mineral density (BMD) of individuals undergoing gastric bypass is unclear. We assessed lean mass (LM), MS, bone remodeling markers, and BMD before and after supervised weight-bearing and aerobic exercise training in obese patients who underwent Roux-en-Y gastric bypass (RYGB). METHODS This study included 37 obese patients (81.1% women, mean age 38.2 years, mean body mass index 42.4 ± 0.5 kg/m2). Whole body densitometry was used to evaluate pre- and postoperative BMD, total body fat, and LM. Serum calcium, parathyroid hormone, 25-hydroxyvitamin D, and bone remodeling markers were measured. MS was determined through the concentric 10 repetition maximum test. Postoperatively, participants were divided into two groups: the training group, who followed an exercise program (TG, n = 18), and the control group, who did not (CG, n = 19). RESULTS After 1 year, the TG showed a lower decrease in total BMD and at the lumbar spine and right hip compared with the CG (p < 0.001). The TG had lower mass reduction and an increase in upper limb LM compared with the CG (both p < 0.05). There was no significant difference between groups in bone markers or calcium metabolism. MS was higher in the TG than the CG (p < 0.05). CONCLUSION The supervised exercise program attenuated lumbar spine and right hip BMD loss and improved LM in the arms and overall MS but did not affect bone remodeling.
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Affiliation(s)
- Luciana Campanha-Versiani
- ICBS, University Center's of Belo Horizonte (UNI-BH), Professor Mario Werneck Avenue, 1685 Estoril, Belo Horizonte, MG, 30455-610, Brazil.
| | | | | | | | | | | | - Maria Marta Sarquis Soares
- Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil.,Felício Rocho Hospital, Belo Horizonte, Brazil
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31
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Abstract
PURPOSE OF REVIEW Type 2 diabetes (T2D) is a growing public health problem in youth, but conventional treatments are often insufficient to treat this disease and its comorbidities. We review evidence supporting an emerging role for bariatric surgery as a treatment for adolescent T2D. RECENT FINDINGS Paralleling what has been seen in adult patients, bariatric surgery dramatically improves glycemic control in patients with T2D. In fact, remission of T2D has been observed in as many as 95-100% of adolescents with diabetes after bariatric surgery, particularly vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass (RYGB) surgery. This striking outcome may be due to both weight-dependent- and weight-independent factors, and recent studies suggest that T2D-related comorbidities may also improve after surgery. Bariatric surgery including RYGB and VSG is a powerful therapeutic option for obese adolescents with T2D. Benefits must be weighed against risk for postoperative complications such as nutritional deficiencies, but earlier surgical intervention might lead to more complete metabolic remission in obese patients with T2D.
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Affiliation(s)
- M A Stefater
- Division of Endocrinology, Boston Children's Hospital, Endocrinology CLS160.4 BCH3151, 300 Longwood Ave., Boston, MA, 02115, USA.
| | - T H Inge
- Department of Surgery, Children's Hospital Colorado, 13123 East 16th Avenue, Box 323, Aurora, CO, 80045-7106, USA
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Melo TL, Froeder L, Baia LDC, Heilberg IP. Bone turnover after bariatric surgery. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2017; 61:332-336. [PMID: 28724055 PMCID: PMC10118938 DOI: 10.1590/2359-3997000000279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 03/10/2017] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The aim of the present study was to evaluate parameters of bone and mineral metabolism after bariatric surgery. SUBJECTS AND METHODS This sectional study included data from medical records from 61 bariatric surgery (BS) patients (minimum period of 6 months after the procedure) and from 30 class II and III obese patients as a control group (Cont), consisting of daily dietary intake of macronutrients, calcium and sodium, serum 25(OH)D and parathyroid hormone (PTH) and other biochemical serum and urinary parameters. Bone alkaline phosphatase (BAP), leptin, fibroblast growth factor-23 (FGF-23) and deoxypyridinoline (DPYD) were determined from available banked serum and urinary samples. RESULTS Mean body mass index (BMI), median energy, carbohydrate, protein and sodium chloride consumption were significantly lower in the BS versus Cont, but calcium and lipids were not. No significant differences were found in ionized calcium, 25(OH)D, PTH and fibroblast growth factor 23 (FGF-23) between groups. Mean serum BAP was significantly higher for BS versus Cont and had a positive correlation with time after the surgical procedure. Mean serum leptin was significantly lower and median urinary DPYD higher in BS versus Cont. CONCLUSION The present study showed an increase in bone markers of both bone formation and resorption among bariatric patients up to more than 7 years after the surgical procedure, suggesting that an increased bone turnover persists even at a very long-term follow-up in such patients.
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Affiliation(s)
- Thalita Lima Melo
- Disciplina de Nefrologia, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Leila Froeder
- Disciplina de Nefrologia, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Leandro da Cunha Baia
- Disciplina de Nefrologia, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Ita Pfeferman Heilberg
- Disciplina de Nefrologia, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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Kalani A, Bami H, Tiboni M, Jaeschke R, Adachi JD, Lau AN. The effect of bariatric surgery on serum 25-OH vitamin D levels: a systematic review and meta-analysis. Obes Sci Pract 2017; 3:319-332. [PMID: 29071108 PMCID: PMC5598026 DOI: 10.1002/osp4.113] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/27/2017] [Accepted: 05/05/2017] [Indexed: 12/11/2022] Open
Abstract
Background Concerns have emerged about post‐operative decreases in calcium and vitamin D following bariatric surgery. This review explores changes in metabolic bone health in persons with obesity undergoing gastric bypass surgery compared to non‐surgical controls, providing an updated and comprehensive perspective on the literature. Methods An electronic search was conducted in MEDLINE, Pubmed, EMBASE and Cochrane databases to 8 November 2016. Eligible trials included randomized controlled trials or controlled observational studies of patients who have undergone laparoscopic gastric bypass surgery. Statistical analysis was carried out using the Cochrane Collaboration Review Manager (RevMan 5.0), and a random effects model was implemented. Outcomes were expressed as weighted mean difference (WMD). The primary outcome examined was change in 25‐OH‐D levels at 12 months post surgery, and secondary outcomes included change in bone mineral density (BMD) measurements at 12 months post surgery at the lumbar spine (LS) and total hip (TH). Results At 12 months, there was no significant difference in 25‐OH vitamin D in the surgical group compared to controls (WMD = 6.79%; 95% CI: −9.01, 22.59; p = 0.40; I2 = 68%). There was no statistically significant difference between fracture risk in the surgical population compared to controls (RR = 1.24; 95% CI: 0.99, 1.56; p = 0.06; I2 = 0%). A significant BMD reduction was however shown at the TH (WMD, −7.33%, 95% CI = −8.70 to −5.97, p < .001, I2 = 0%), and a trend towards decline was observed at the LS (WMD, −1.73%, 95% CI = −3.56 to 0.11, p = 0.06, I2 = 0%). Changes at 24 months for applicable outcomes were similar to the results at 12 months. Conclusions Bariatric surgery may compromise metabolic bone health, but the paucity of high‐quality literature limits conclusions.
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Affiliation(s)
- A Kalani
- Department of Internal Medicine McMaster University Hamilton ON Canada
| | - H Bami
- Schulich School of Medicine and Dentistry Western University London ON Canada
| | - M Tiboni
- Department of Internal Medicine McMaster University Hamilton ON Canada
| | - R Jaeschke
- Department of Internal Medicine McMaster University Hamilton ON Canada
| | - J D Adachi
- Department of Internal Medicine McMaster University Hamilton ON Canada
| | - A N Lau
- Department of Internal Medicine McMaster University Hamilton ON Canada
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Yu EW, Lee MP, Landon JE, Lindeman KG, Kim SC. Fracture Risk After Bariatric Surgery: Roux-en-Y Gastric Bypass Versus Adjustable Gastric Banding. J Bone Miner Res 2017; 32:1229-1236. [PMID: 28251687 PMCID: PMC5466471 DOI: 10.1002/jbmr.3101] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/09/2017] [Accepted: 02/10/2017] [Indexed: 01/06/2023]
Abstract
The long-term consequences of bariatric surgery on fracture risk are unclear but are likely to vary by procedure type. In physiologic studies, Roux-en-Y gastric bypass (RYGB) and adjustable gastric banding (AGB) have differential effects on rates of bone loss. Therefore, our objective was to compare fracture risk in obese adults after RYGB and AGB procedures. Using claims data from a US commercial health plan, we analyzed rates of nonvertebral fractures within a propensity score-matched cohort (n = 15,032) of morbidly obese adults who received either RYGB or AGB surgery between 2005 and 2013. A total of 281 nonvertebral fractures occurred during a mean follow-up time of 2.3 ± 1.9 years. RYGB patients had an increased risk of nonvertebral fracture (hazard ratio [HR] = 1.43, 95% confidence interval [CI] 1.13-1.81) compared with AGB patients. In fracture site-specific analyses, RYGB patients had increased risk of fracture at the hip (HR = 1.54, 95% CI 1.03-2.30) and wrist (HR = 1.45, 95% CI 1.01-2.07). Nonvertebral fracture risk associated with RYGB manifested >2 years after surgery and increased in subsequent years, with the highest risk in the fifth year after surgery (HR = 3.91, 95% CI 1.58-9.64). In summary, RYGB is associated with a 43% increased risk of nonvertebral fracture compared with AGB, with risk increasing >2 years after surgery. Fracture risk should be considered in risk/benefit discussions of bariatric surgery, particularly among patients with high baseline risk of osteoporosis who are deciding between RYGB and AGB procedures. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Elaine W. Yu
- Endocrine Unit, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Moa P. Lee
- Division of Pharmacoepidemiology and Pharmacoeconomics; Brigham and Women’s Hospital/Harvard Medical School, Boston, MA, USA
| | - Joan E. Landon
- Division of Pharmacoepidemiology and Pharmacoeconomics; Brigham and Women’s Hospital/Harvard Medical School, Boston, MA, USA
| | - Katherine G. Lindeman
- Endocrine Unit, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Seoyoung C. Kim
- Division of Pharmacoepidemiology and Pharmacoeconomics; Brigham and Women’s Hospital/Harvard Medical School, Boston, MA, USA
- Division of Rheumatology, Immunology and Allergy; Brigham and Women’s Hospital/Harvard Medical School, Boston, MA, USA
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Farr JN, Dimitri P. The Impact of Fat and Obesity on Bone Microarchitecture and Strength in Children. Calcif Tissue Int 2017; 100:500-513. [PMID: 28013362 PMCID: PMC5395331 DOI: 10.1007/s00223-016-0218-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 12/10/2016] [Indexed: 12/15/2022]
Abstract
A complex interplay of genetic, environmental, hormonal, and behavioral factors affect skeletal development, several of which are associated with childhood fractures. Given the rise in obesity worldwide, it is of particular concern that excess fat accumulation during childhood appears to be a risk factor for fractures. Plausible explanations for this higher fracture risk include a greater propensity for falls, greater force generation upon fall impact, unhealthy lifestyle habits, and excessive adipose tissue that may have direct or indirect detrimental effects on skeletal development. To date, there remains little resolution or agreement about the impact of obesity and adiposity on skeletal development as well as the mechanisms underpinning these changes. Limitations of imaging modalities, short duration of follow-up in longitudinal studies, and differences among cohorts examined may all contribute to conflicting results. Nonetheless, a linear relationship between increasing adiposity and skeletal development seems unlikely. Fat mass may confer advantages to the developing cortical and trabecular bone compartments, provided that gains in fat mass are not excessive. However, when fat mass accumulation reaches excessive levels, unfavorable metabolic changes may impede skeletal development. Mechanisms underpinning these changes may relate to changes in the hormonal milieu, with adipokines potentially playing a central role, but again findings have been confounding. Changes in the relationship between fat and bone also appear to be age and sex dependent. Clearly, more work is needed to better understand the controversial impact of fat and obesity on skeletal development and fracture risk during childhood.
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Affiliation(s)
- Joshua N Farr
- Robert and Arlene Kogod Center on Aging and Endocrine Research Unit, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN, 55905, USA.
| | - Paul Dimitri
- The Academic Unit of Child Health, Department of Paediatric Endocrinology, Sheffield Children's NHS Foundation Trust, University of Sheffield, Western Bank, Sheffield, S10 2TH, UK.
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Harper C, Pattinson AL, Fernando HA, Zibellini J, Seimon RV, Sainsbury A. Effects of obesity treatments on bone mineral density, bone turnover and fracture risk in adults with overweight or obesity. Horm Mol Biol Clin Investig 2017; 28:133-149. [PMID: 27665425 DOI: 10.1515/hmbci-2016-0025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/04/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND New evidence suggests that obesity is deleterious for bone health, and obesity treatments could potentially exacerbate this. MATERIALS AND METHODS This narrative review, largely based on recent systematic reviews and meta-analyses, synthesizes the effects on bone of bariatric surgery, weight loss pharmaceuticals and dietary restriction. RESULTS AND CONCLUSIONS All three obesity treatments result in statistically significant reductions in hip bone mineral density (BMD) and increases in bone turnover relative to pre-treatment values, with the reductions in hip BMD being strongest for bariatric surgery, notably Roux-en Y gastric bypass (RYGB, 8%-11% of pre-surgical values) and weakest for dietary restriction (1%-1.5% of pre-treatment values). Weight loss pharmaceuticals (orlistat or the glucagon-like peptide-1 receptor agonist, liraglutide) induced no greater changes from pre-treatment values than control, despite greater weight loss. There is suggestive evidence that liraglutide may increase bone mineral content (BMC) - but not BMD - and reduce fracture risk, but more research is required to clarify this. All three obesity treatments have variable effects on spine BMD, probably due to greater measurement error at this site in obesity, suggesting that future research in this field could focus on hip rather than spine BMD. Various mechanisms have been proposed for BMD loss with obesity treatments, notably reduced nutritional intake/absorption and insufficient exercise, and these are potential avenues for protection against bone loss. However, a pressing outstanding question is whether this BMD reduction contributes to increased fracture risk, as has been observed after RYGB, and whether any such increase in fracture risk outweighs the risks of staying obese (unlikely).
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Abstract
BACKGROUND The aim is to evaluate via meta-analysis bone metabolism and bone mineral density (BMD) in morbidly obese patients before and after bariatric surgery. METHODS We searched Medline, EMBASE, and the Cochrane Library for relevant studies published before January 2014. The following outcomes were evaluated: serum calcium, serum parathyroid hormone (PTH), serum 25-hydroxyvitamin D [25(OH)D], serum or urinary N-telopeptide (NTX), bone-specific alkaline phosphatase (BSAP), and bone mineral density (BMD). RESULTS Ten studies, including 344 patients, met our inclusion criteria. Results showed a significant decrease in serum calcium (MD = -0.10, 95 %CI -0.14 to -0.07, P < 0.00001) and increase in serum PTH (MD = 12.41, 95 %CI 6.51 to 18.31, P < 0.00001) but no significant difference in serum 25(OH)D (MD = 1.35, 95 %CI -1.12 to 3.83, P = 0.28) following bariatric surgery. There were significant increases in serum or urinary NTX (MD = 18.49, 95 %CI 3.33 to 33.66, P = 0.02) and BSAP (MD = 7.47, 95 %CI 0.21 to 14.72, P = 0.04) but a significant decrease in BMD (MD = -0.08, 95 %CI -0.13 to -0.04, P < 0.00001) after bariatric surgery. CONCLUSION BMD was significantly decreased, while bone turnover was elevated, and bone remodeling was accelerated following bariatric surgery. Basal bone metabolism should be evaluated preoperatively. To prevent secondary hyperparathyroidism and bone loss, calcium and vitamin D should be monitored closely and supplemented accordingly after the surgery.
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38
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Yu EW, Carmody JS, Brooks DJ, LaJoie S, Kaplan LM, Bouxsein ML. Cortical and trabecular deterioration in mouse models of Roux-en-Y gastric bypass. Bone 2016; 85:23-8. [PMID: 26806052 PMCID: PMC4792678 DOI: 10.1016/j.bone.2016.01.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 01/07/2023]
Abstract
Roux-en-Y gastric bypass (RYGB) is a profoundly effective treatment for severe obesity, but results in significant bone loss in patients. Developing a murine model that recapitulates this skeletal phenotype will provide a robust tool with which to study the physiologic mechanisms of this bone loss. We studied adult male C57BL/6J mice who underwent either RYGB or sham operation. Twelve weeks after surgery, we characterized biochemical bone markers (parathyroid hormone, PTH; C-telopeptide, CTX; and type 1 procollagen, P1NP) and bone microarchitectural parameters as measured by microcomputed tomography. RYGB-treated mice had significant trabecular and cortical bone deficits compared with sham-operated controls. Although adjustment for final body weight eliminated observed cortical differences, the trabecular bone volume fraction remained significantly lower in RYGB mice even after weight adjustment. PTH levels were similar between groups, but RYGB mice had significantly higher indices of bone turnover than sham controls. These data demonstrate that murine models of RYGB recapitulate patterns of bone loss and turnover that have been observed in human clinical studies. Future studies that exploit this murine model will help delineate the alterations in bone metabolism and mechanisms of bone loss after RYGB.
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Affiliation(s)
| | - Jill S. Carmody
- Obesity, Metabolism, and Nutrition Institute and Gastrointestinal Unit, Massachusetts General Hospital
| | - Daniel J. Brooks
- Endocrine Unit, Massachusetts General Hospital
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center
| | - Scott LaJoie
- Obesity, Metabolism, and Nutrition Institute and Gastrointestinal Unit, Massachusetts General Hospital
| | - Lee M. Kaplan
- Obesity, Metabolism, and Nutrition Institute and Gastrointestinal Unit, Massachusetts General Hospital
| | - Mary L Bouxsein
- Endocrine Unit, Massachusetts General Hospital
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center
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Sakhaee K, Poindexter J, Aguirre C. The effects of bariatric surgery on bone and nephrolithiasis. Bone 2016; 84:1-8. [PMID: 26679435 PMCID: PMC4827266 DOI: 10.1016/j.bone.2015.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 11/13/2015] [Accepted: 12/04/2015] [Indexed: 12/25/2022]
Abstract
The impact of bariatric surgery on cardiovascular and diabetic complications associated with an improvement in survival has overshadowed the adverse skeletal health and development of kidney stone disease in this population. All longitudinal based studies in the literature reporting the incidence of bone fractures or kidney stones following bariatric surgery were reviewed. Moreover, all publications over the past decade which assessed changes in bone mineral density and bone quality, or explored underlying pathophysiologic mechanisms of bone and kidney stone disease were carefully reviewed. This review provides sufficient data to support that osteoporotic fractures and kidney stone disease are associated with Roux-en-Y gastric bypass surgery. However, due to the limited data available to date, no definitive conclusion could yet be drawn whether sleeve gastrectomy or adjustable gastric banding is associated with bone fractures and kidney stones. Bariatric surgery has emerged as the most effective and sustained treatment for weight reduction. This treatment modality has been recognized to diminish the risk of cardiovascular morbidity and mortality and ameliorate diabetes mellitus complications. The derangement in mineral metabolism has emerged as a major complication following bariatric surgery.
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Affiliation(s)
- Khashayar Sakhaee
- Department of Internal Medicine, Division of Mineral Metabolism, Charles & Jane Pak Center for Mineral Metabolism & Clinical Research,University of Texas Southwestern Medical Center, Dallas, TX, United States.
| | - John Poindexter
- Department of Internal Medicine, Division of Mineral Metabolism, Charles & Jane Pak Center for Mineral Metabolism & Clinical Research,University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Crystal Aguirre
- Department of Internal Medicine, Division of Mineral Metabolism, Charles & Jane Pak Center for Mineral Metabolism & Clinical Research,University of Texas Southwestern Medical Center, Dallas, TX, United States
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40
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Koçkaya G, Yenilmez FB, Ergin G, Atikeler K, Tatar M. Cost effectiveness and economic value of obesity surgery for Turkey (CEVOS-T). ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.obmed.2015.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Cole AJ, Kuchnia AJ, Beckman LM, Jahansouz C, Mager JR, Sibley SD, Earthman CP. Long-Term Body Composition Changes in Women Following Roux-en-Y Gastric Bypass Surgery. JPEN J Parenter Enteral Nutr 2016; 41:583-591. [PMID: 26838526 DOI: 10.1177/0148607115625621] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Although most individuals experience successful weight loss following Roux-en-Y gastric bypass (RYGB), weight regain is a concern, the composition of which is not well documented. Our aim was to evaluate changes in body composition and handgrip strength as a measure of functional status in participants from a previous 1-year post-RYGB longitudinal study who had undergone RYGB approximately 9 years prior. METHODS Five women from an original larger cohort were monitored pre-RYGB and 1.5 months, 6 months, 1 year, and 9 years post-RYGB. Body composition was assessed at all time points using dual energy x-ray absorptiometry and multiple dilution. Handgrip strength was measured using a digital isokinetic hand dynamometer (Takei Scientific Instruments, Ltd, Tokyo, Japan). RESULTS Mean time to final follow-up was 8.7 years. Lean soft tissue (LST) loss over the ~9-year period was on average 11.9 ± 5.6 kg. Compared with 1-year post-RYGB, 9-year LST was 4.4 ± 3.0 kg lower ( P = .03). Fat-free mass decreased over the 9-year period by 12.6 ± 5.8 kg. Mean fat mass (FM) decreased from 75.4 ± 22.6 kg pre-RYGB to 35.5 ± 21.5 kg 1 year post-RYGB but then trended toward an increase of 8.6 ± 7.0 kg between 1 year and 9 years post-RYGB ( P = .053). Loss of LST was correlated with loss of handgrip strength ( r = 0.64, P = .0005). CONCLUSION The continued loss of lean mass associated with decreased handgrip strength occurring with long-term trend toward FM regain post-RYGB is concerning. The loss of LST and functional strength carries particular implications for the aging bariatric population and should be investigated further.
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Abstract
Various bariatric surgical procedures are effective at improving health in patients with obesity associated co-morbidities, but the aim of this review is to specifically describe the mechanisms through which Roux-en-Y gastric bypass (RYGB) surgery enables weight loss for obese patients using observations from both human and animal studies. Perhaps most but not all clinicians would agree that the beneficial effects outweigh the harm of RYGB; however, the mechanisms for both the beneficial and deleterious (for example postprandial hypoglycaemia, vitamin deficiency and bone loss) effects are ill understood. The exaggerated release of the satiety gut hormones, such as GLP-1 and PYY, with their central and peripheral effects on food intake has given new insight into the physiological changes that happen after surgery. The initial enthusiasm after the discovery of the role of the gut hormones following RYGB may need to be tempered as the magnitude of the effects of these hormonal responses on weight loss may have been overestimated. The physiological changes after RYGB are unlikely to be due to a single hormone, or single mechanism, but most likely involve complex gut-brain signalling. Understanding the mechanisms involved with the beneficial and deleterious effects of RYGB will speed up the development of effective, cheaper and safer surgical and non-surgical treatments for obesity.
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Affiliation(s)
- G Abdeen
- Investigative Science, Imperial College London, London, UK.
| | - C W le Roux
- Investigative Science, Imperial College London, London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
- Gastrosurgical Laboratory, University of Gothenburg, Gothenburg, Sweden
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43
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Yu EW, Wewalka M, Ding SA, Simonson DC, Foster K, Holst JJ, Vernon A, Goldfine AB, Halperin F. Effects of Gastric Bypass and Gastric Banding on Bone Remodeling in Obese Patients With Type 2 Diabetes. J Clin Endocrinol Metab 2016; 101:714-22. [PMID: 26600045 PMCID: PMC4880129 DOI: 10.1210/jc.2015-3437] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
CONTEXT Roux-en-Y gastric bypass (RYGB) leads to high-turnover bone loss, but little is known about skeletal effects of laparoscopic adjustable gastric banding (LAGB) or mechanisms underlying bone loss after bariatric surgery. OBJECTIVE To evaluate effects of RYGB and LAGB on fasting and postprandial indices of bone remodeling. DESIGN AND SETTING Ancillary investigation of a prospective study at 2 academic institutions. PARTICIPANTS Obese adults aged 21-65 years with type 2 diabetes who underwent RYGB (n = 11) or LAGB (n = 8). OUTCOMES Serum C-terminal telopeptide (CTX), procollagen type 1 N-terminal propeptide (P1NP), and PTH were measured during a mixed meal tolerance test at baseline, 10 days and 1 year after surgery. Changes in 25-hydroxyvitamin D, polypeptide YY (PYY), glucagon-like peptide-1, glucose-dependent insulinotropic peptide, and insulin were also assessed. RESULTS Fasting CTX increased 10 days after RYGB but not LAGB (+69 ± 23% vs +12±12%, P < .001), despite comparable weight loss at that time. By 1 year, fasting CTX and P1NP increased more after RYGB than LAGB (CTX +221 ± 60% vs +15 ± 6%, P<0.001; P1NP +93 ± 25% vs -9 ± 10%, P < .001) and weight loss was greater with RYGB. Changes in CTX were independent of PTH and 25-hydroxyvitamin D but were associated with increases in fasting PYY. Postprandial suppression of CTX was more pronounced after RYGB than LAGB at 10 days and 1 year postoperatively. CONCLUSIONS RYGB is accompanied by early increases in fasting indices of bone remodeling, independent of weight loss or changes in PTH or 25-hydroxyvitamin D. LAGB did not affect bone markers. PYY and other enterohormonal signals may play a role in RYGB-specific skeletal changes.
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Affiliation(s)
- Elaine W Yu
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Marlene Wewalka
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Su-Ann Ding
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Donald C Simonson
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Kathleen Foster
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Jens J Holst
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Ashley Vernon
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Allison B Goldfine
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Florencia Halperin
- Endocrine Unit (E.W.Y.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Research Division (M.W., S.-A.D., K.F., A.B.G.), Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215; Division of Endocrinology (D.C.S., A.B.G., F.H.), Diabetes, and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences (J.J.H.), University of Copenhagen, Denmark; and Center for Metabolic and Bariatric Surgery (A.V.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
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Lu CW, Chang YK, Chang HH, Kuo CS, Huang CT, Hsu CC, Huang KC. Fracture Risk After Bariatric Surgery: A 12-Year Nationwide Cohort Study. Medicine (Baltimore) 2015; 94:e2087. [PMID: 26632892 PMCID: PMC4674195 DOI: 10.1097/md.0000000000002087] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Bariatric surgery has been shown to impair bone health. This study aimed to investigate the fracture risk in patients after bariatric surgery versus propensity score-matched controls. The authors used the National Health Insurance Research Database of Taiwan and identified 2064 patients who underwent bariatric surgery during 2001 to 2009. These patients were matched to 5027 obese patients who did not receive bariatric surgery, using propensity score matching accounting for age, sex, Charlson Comorbidity Index, diabetes, hypertension, hyperlipidemia and the year morbid obesity was diagnosed. The authors followed the surgical and control cohorts to death, any diagnosis of fracture, or December 31, 2012, whichever occurred first. Cox proportional hazard regression models were used to calculate relative rates of fractures in the surgical group and control group. At the end of the 12-year study period, there were 183 fractures in the surgical group (mean follow-up 4.8 years) and 374 fractures in the matched control group (mean follow-up 4.9 years). Overall, there was a 1.21-fold [95% confidence interval (CI): 1.02-1.43] significantly increased risk of fracture in the surgical group compared with the control group. Stratified by surgical procedures, malabsorptive procedures showed a significantly higher fracture risk (1.47, 95% CI: 1.01-2.15). The Kaplan-Meier estimated fracture rates were 1.60% at 1 year, 2.37% at 2 years, 1.69% at 5 years, and 2.06% after 5 years for the surgical patients, compared with 1.51%, 1.65%, 1.53%, and 1.42%, respectively, for the matched controls. Adjusted analysis showed a trend towards an increased fracture risk, 1 to 2 years after bariatric surgery. (1.42, 95% CI: 0.99-2.05). Bariatric surgery was significantly associated with an increased risk of fractures, mainly with malabsorptive procedures, with a trend of an increased fracture risk 1 to 2 years after surgery. These results provide further evidence for the adverse effects of bariatric surgery on the risk of fractures.
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Affiliation(s)
- Chia-Wen Lu
- From the Department of Family Medicine, National Taiwan University Hospital, Taipei (C-WL, H-HC, C-SK, K-CH); Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli County (Y-KC, C-TH, C-CH, K-CH); Department of Family Medicine, College of Medicine, National Taiwan University, Taipei (K-CH); Department of Health Services Administration, China Medical University, Taichung City (C-CH); and Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan (C-CH)
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Ikramuddin S. Bariatric surgery and bone health. Obesity (Silver Spring) 2015; 23:2323. [PMID: 26524609 DOI: 10.1002/oby.21260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 07/29/2015] [Indexed: 01/06/2023]
Affiliation(s)
- Sayeed Ikramuddin
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota, USA
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Ceriani V, Cetta F, Pinna F, Pontiroli AE. Abnormal calcium, 25(OH)vitamin D, and parathyroid hormone after biliopancreatic diversion; correction through elongation of the common tract and reduction of the gastric pouch. Surg Obes Relat Dis 2015; 12:805-812. [PMID: 27292138 DOI: 10.1016/j.soard.2015.11.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 09/23/2015] [Accepted: 11/22/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Biliopancreatic diversion (BPD) is a surgical technique burdened, in some instances, by clinical evidence of malabsorption and intractable diarrhoea. OBJECTIVES To compare calcium metabolism together with weight in patients undergoing BPD versus BPD followed by revisional surgery because of side effects of BPD or ineffectiveness of BPD. SETTING University hospital. METHODS Twenty-seven patients underwent BPD. After a median period of 48 months, they underwent revisional surgery (elongation of the common limb from 50 to 200 cm and reduction of the gastric pouch from 500 to 40 mL) and were observed for a total period of 120 months; 40 patients only underwent BPD (controls) and were observed for an identical period. RESULTS At baseline, 24 patients (8 revisional surgery and 16 controls) had increased parathyroid hormone (PTH) levels, and only 3 patients had normal 25(OH)vitamin D levels; calcium declined, even within normal limits, and PTH increased in the revisional surgery group. After revisional surgery, patients experienced a further decrease of weight, together with a reduction of PTH levels, an increase of 25(OH)vitamin D levels, and an increase of calcium levels. Weight loss was inverserly associated with an increase of 25(OH)vitamin D and directly associated with change of PTH. CONCLUSION This study suggests that it is possible to control effects of BPD on calcium metabolism through a revisional procedure leading to lesser malabsorption and to greater restriction of the gastric pouch. It should be considered in the presence of significant side effects due to excessive malabsorption.
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Affiliation(s)
- Valerio Ceriani
- Istituto di Ricovero e Cura a Carattere Scientifico Multimedica, Milano, Italy.
| | - Francesco Cetta
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
| | - Ferdinando Pinna
- Istituto di Ricovero e Cura a Carattere Scientifico Multimedica, Milano, Italy
| | - Antonio E Pontiroli
- Dipartimento di Scienze della Salute, Università degli Studi di Milano, Milano, Italy
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Visceral fat and body composition changes in a female population after RYGBP: a two-year follow-up by DXA. Obes Surg 2015; 25:443-51. [PMID: 25218013 DOI: 10.1007/s11695-014-1422-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Our aim was to monitor the impact of Roux-en-Y gastric bypass (RYGBP) on body composition over a 24-month period by dual-energy X-ray absorptiometry (DXA). METHODS Forty-one women (40.6 ± 10.0 years old; 42.6 ± 6.6 kg/m(2)) entering a bariatric surgery programme were submitted to whole-body DXA (Lunar iDXA) before treatment and after 3, 6, 12 and 24 months. Fat mass (FM), non-bone lean mass (LM), bone mineral content (BMC) and density (BMD) were measured at whole body and regionally. Android visceral adipose tissue (VAT) was estimated by a recently validated software. RESULTS Twenty-nine patients (44.3 ± 11.8 years old; BMI, 45.4 ± 8.9 kg/m(2)) concluded the study. Following surgery, the progressive decrease of BMI was associated with reduced whole-body and regional FM. LM showed a moderate decrease at 3 months and stabilized thereafter. A progressive decrease of total FM/LM and android FM/LM ratios were observed in the 3- to 6-month (-19.1 ± 8.4 % and -26.5 ± 10.9 %, respectively; p < 0.0001) and 6- to 12-month periods (-23.5 ± 16.8 % and -29.4 ± 23.9 %, respectively; p < 0.0001). VAT was the parameter showing the largest decrease (-65.6 ± 17.5 % at 12 months; p < 0.0001). Two years after the surgery, a slight but significant decrease of total and regional LM was observed, without any significant change in BMI. CONCLUSIONS Body composition significantly changes after RYGBP with a metabolically healthier redistribution of total and regional FM and a positive balance of FM/LM variation. DXA should be considered as a valid supplementary tool for the clinical assessment and follow-up in patients undergoing bariatric surgery.
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Carrasco F, Basfi-Fer K, Rojas P, Valencia A, Csendes A, Codoceo J, Inostroza J, Ruz M. Changes in bone mineral density after sleeve gastrectomy or gastric bypass: relationships with variations in vitamin D, ghrelin, and adiponectin levels. Obes Surg 2015; 24:877-84. [PMID: 24435517 DOI: 10.1007/s11695-014-1179-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND A major long-term concern after gastric bypass (GBP) is the risk of osteoporosis; however, little is known about this complication in patients undergoing sleeve gastrectomy (SG). OBJECTIVE To evaluate changes in bone mineral density (BMD) after GBP and SG, and its relationship with changes in vitamin D, parathyroid hormone (PTH), ghrelin, and adiponectin. METHODS Twenty-three women undergoing GBP (BMI 42.0 ± 4.2 kg/m2; 37.3 ± 8.1 years) and 20 undergoing SG (BMI 37.3 ± 3.2 kg/m2; 34.2 ± 10.2 years) were studied before and 6 and 12 months after surgery. BMD was measured by dual-energy X-ray absorptiometry. Plasma PTH, 25-hydroxyvitamin D (25-OHD), ghrelin, and adiponectin concentrations were determined. Food as well as calcium and vitamin D supplement intake was recorded. RESULTS Excess weight loss (mean ± SE), adjusted by baseline excess weight, was 79.1±3.8% and 74.9 ± 4.1% 1 year after GBP and SG, respectively (p = 0.481). Significant reduction in BMD for total body (TB), lumbar spine (LS), and femoral neck (FN) was observed after GBP. In the SG group, reduction in BMD was significant only for TB. Adjusted by baseline BMD, the difference between change in BMD for GBP vs. SG was not significant for TB, LS, or FN. Percent reduction in ghrelin concentration was a main factor related to total BMD loss (GBP group) and LS BMD loss (GBP and SG groups). CONCLUSIONS One year after gastric bypass, bone mineral density was significantly affected, mainly at the femoral neck. Decreases in bone mineral density were more dramatic among patients who had greater baseline BMD and greater reduction in ghrelin concentrations.
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Affiliation(s)
- Fernando Carrasco
- Department of Nutrition, Faculty of Medicine, University of Chile, Independencia 1027, 8380453, Santiago, Chile
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Yu EW, Bouxsein ML, Putman MS, Monis EL, Roy AE, Pratt JSA, Butsch WS, Finkelstein JS. Two-year changes in bone density after Roux-en-Y gastric bypass surgery. J Clin Endocrinol Metab 2015; 100:1452-9. [PMID: 25646793 PMCID: PMC4399296 DOI: 10.1210/jc.2014-4341] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
CONTEXT Bariatric surgery is increasingly popular but may lead to metabolic bone disease. OBJECTIVE The objective was to determine the rate of bone loss in the 24 months after Roux-en-Y gastric bypass. DESIGN AND SETTING This was a prospective cohort study conducted at an academic medical center. PARTICIPANTS The participants were adults with severe obesity, including 30 adults undergoing gastric bypass and 20 nonsurgical controls. OUTCOMES We measured bone mineral density (BMD) at the lumbar spine and proximal femur by quantitative computed tomography (QCT) and dual-energy x-ray absorptiometry at 0, 12, and 24 months. BMD and bone microarchitecture were also assessed by high-resolution peripheral QCT, and estimated bone strength was calculated using microfinite element analysis. RESULTS Weight loss plateaued 6 months after gastric bypass but remained greater than controls at 24 months (-37 ± 3 vs -5 ± 3 kg [ mean ± SEM]; P < .001). At 24 months, BMD was 5-7% lower at the spine and 6-10% lower at the hip in subjects who underwent gastric bypass compared with nonsurgical controls, as assessed by QCT and dual-energy x-ray absorptiometry (P < .001 for all). Despite significant bone loss, average T-scores remained in the normal range 24 months after gastric bypass. Cortical and trabecular BMD and microarchitecture at the distal radius and tibia deteriorated in the gastric bypass group throughout the 24 months, such that estimated bone strength was 9% lower than controls. The decline in BMD persisted beyond the first year, with rates of bone loss exceeding controls throughout the second year at all skeletal sites. Mean serum calcium, 25(OH)-vitamin D, and PTH were maintained within the normal range in both groups. CONCLUSIONS Substantial bone loss occurs throughout the 24 months after gastric bypass despite weight stability in the second year. Although the benefits of gastric bypass surgery are well established, the potential for adverse effects on skeletal integrity remains an important concern.
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Affiliation(s)
- Elaine W Yu
- Endocrine Unit (E.W.Y., M.L.B., M.S.P., E.L.M., A.E.R., J.S.F.), and Weight Center (J.S.A.P., W.S.B.), Massachusetts General Hospital, Boston, Massachusetts 02114
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Kim TN. Diverse Abnormal Body Composition Phenotypes: Interaction Between Muscle, Fat, and Bone. ACTA ACUST UNITED AC 2015. [DOI: 10.7570/kjo.2015.24.1.9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Tae Nyun Kim
- Department of Internal Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan, Korea
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