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Kalaria T, Lawson AJ, Duffy J, Agravatt A, Harris S, Ford C, Gama R, Webster C, Geberhiwot T. Age-specific Reference Intervals of Abbott Intact PTH-Potential Impacts on Clinical Care. J Endocr Soc 2024; 8:bvae004. [PMID: 38292595 PMCID: PMC10825829 DOI: 10.1210/jendso/bvae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Indexed: 02/01/2024] Open
Abstract
Background PTH assays are not standardized; therefore, method-specific PTH reference intervals are required for interpretation of results. PTH increases with age in adults but age-related reference intervals for the Abbott intact PTH (iPTH) assay are not available. Methods Deidentified serum PTH results from September 2015 to November 2022 were retrieved from the laboratory information system of a laboratory serving a cosmopolitan population in central-west England for individuals aged 18 years and older if the estimated glomerular filtration rate was ≥60 mL/min, serum 25-hydroxyvitamin D was >50 nmol/L, and serum albumin-adjusted calcium and serum phosphate were within reference intervals. Age-specific reference intervals for Abbott iPTH were derived by an indirect method using the refineR algorithm. Results PTH increased with age and correlated with age when controlled for 25-hydroxyvitamin D, estimated glomerular filtration rate, and adjusted calcium (r = 0.093, P < .001). The iPTH age-specific reference intervals for 4 age partitions of 18 to 45 years, 46 to 60 years, 61 to 80 years, and 81 to 95 years were 1.6 to 8.6 pmol/L, 1.8 to 9.5 pmol/L, 2.0 to 11.3 pmol/L, and 2.3 to 12.3 pmol/L, respectively. PTH was higher in women compared with men (P < .001). Sex-specific age-related reference intervals could not be derived because of the limited sample size. Conclusion Age-specific Abbott iPTH reference intervals were derived. Application of age-specific reference intervals will impact the diagnosis and management of normocalcemic hyperparathyroidism, based on current definitions, and secondary hyperparathyroidism. Additional studies are required to clarify the effect of sex and ethnicity on PTH.
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Affiliation(s)
- Tejas Kalaria
- Clinical Biochemistry, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK
| | - Alexander J Lawson
- Clinical Biochemistry, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK
| | - Joanne Duffy
- Clinical Biochemistry, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK
| | | | - Steve Harris
- Black Country Pathology Services, The Royal Wolverhampton NHS Trust, Wolverhampton, WV10 0QP, UK
| | - Clare Ford
- Black Country Pathology Services, The Royal Wolverhampton NHS Trust, Wolverhampton, WV10 0QP, UK
| | - Rousseau Gama
- Black Country Pathology Services, The Royal Wolverhampton NHS Trust, Wolverhampton, WV10 0QP, UK
- School of Medicine and Clinical Practice, University of Wolverhampton, Wolverhampton, WV1 1LY, UK
| | - Craig Webster
- Clinical Biochemistry, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK
| | - Tarekegn Geberhiwot
- Centre for Endocrinology, Diabetes, and Metabolism, Queen Elizabeth Hospital, Birmingham, B15 2TH, UK
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK
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Cavalcante LBCP, Brandão CMÁ, Chiamolera MI, Biscolla RPM, Junior JVL, de Sá Tavares Russo P, Morgado JPM, de Francischi Ferrer CMA, Vieira JGH. Big data-based parathyroid hormone (PTH) values emphasize need for age correction. J Endocrinol Invest 2023; 46:2525-2533. [PMID: 37286864 PMCID: PMC10632255 DOI: 10.1007/s40618-023-02107-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/30/2023] [Indexed: 06/09/2023]
Abstract
PURPOSE We aimed to study the relationship between aging and increased parathyroid hormone (PTH) values. METHODS We performed a retrospective cross-sectional study with data from patients who underwent outpatient PTH measurements performed by a second-generation electrochemiluminescence immunoassay. We included patients over 18 years of age with simultaneous PTH, calcium, and creatinine measurements and 25-OHD measured within 30 days. Patients with glomerular filtration rate < 60 mL/min/1.73 m2, altered calcemia, 25-OHD level < 20 ng/mL, PTH values > 100 pg/mL or using lithium, furosemide or antiresorptive therapy were excluded. Statistical analyses were performed using the RefineR method. RESULTS Our sample comprised 263,242 patients for the group with 25-OHD ≥ 20 ng/mL, that included 160,660 with 25-OHD ≥ 30 ng/mL. The difference in PTH values among age groups divided by decades was statistically significant (p < 0.0001), regardless of 25-OHD values, ≥ 20 or ≥ 30 ng/mL. In the group with 25-OHD ≥ 20 ng/mL and more than 60 years, the PTH values were 22.1-84.0 pg/mL, a different upper reference limit from the reference value recommended by the kit manufacturer. CONCLUSION We observed a correlation between aging and PTH increase, when measured by a second-generation immunoassay, regardless of vitamin D levels, if greater than 20 ng/mL, in normocalcemic individuals without renal dysfunction.
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Affiliation(s)
- L B C P Cavalcante
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil.
| | - C M Á Brandão
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | - M I Chiamolera
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | - R P M Biscolla
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | - J V L Junior
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | - P de Sá Tavares Russo
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | - J P M Morgado
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
| | | | - J G H Vieira
- Fleury Group, Rua Mato Grosso, 306, cj 408, Higienópolis, São Paulo, SP, 01239-040, Brazil
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3
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Sato M, Morishita T, Katayama T, Satomura S, Okuno H, Sumida N, Sakuma M, Arai H, Katoh S, Sairyo K, Kawaura A, Takeda E. Relationship between age-related decreases in serum 25-hydroxyvitamin D levels and skeletal muscle mass in Japanese women. THE JOURNAL OF MEDICAL INVESTIGATION 2021; 67:151-157. [PMID: 32378599 DOI: 10.2152/jmi.67.151] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
A clearer understanding of skeletal muscle mass (SMM) in middle-aged and elderly individuals is important for maintaining functionality. In the present study, age-related changes in SMM, the threshold of SMM with walking difficulty, intestinal nutrient absorption rate, and various serum factors were examined in Japanese populations of different ages. We used 24-h creatinine excretion as a measure of total body SMM. Age-related decreases in SMM, intestinal nutrient absorption rates, and serum 25-hydroxyvitamin D [25(OH)D] concentrations were significantly higher in women than in men. The cut-off values for SMM (kg), its percentage of total body weight (BW), the SMM index [SMMI] (Kg / m2), and creatinine height index (CHI) (%) in elderly individuals with walking difficulty were approximately 8-10 kg, 17-20% of BW, 3.9-4.6 kg / m2, and 44%, respectively. Serum 25(OH)D concentrations were closely associated with SMM (kg, % of BW, kg / m2) and CHI (%) as well as the intestinal absorption rates of nitrogen (%) and phosphorus (%) in women, but not in men. The present results demonstrate that vitamin D is an important metabolic factor in skeletal muscle, and contributes to the optimal management of skeletal muscle and the prevention of sarcopenia. J. Med. Invest. 67 : 151-157, February, 2020.
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Affiliation(s)
- Michiko Sato
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan.,Equally contributed to this study
| | - Teruhiro Morishita
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan.,Equally contributed to this study
| | - Takafumi Katayama
- Department of Statistics and Computer Science, College of Nursing Art and Science, University of Hyogo, Akashi, Japan
| | - Shigeko Satomura
- Division of Child Neurology, Tokushima Prefectural Hinomine Medical Center for the Handicapped, Komatsushima, Japan
| | - Hiroko Okuno
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan
| | - Nami Sumida
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan
| | - Masae Sakuma
- Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University, Nagoya, Japan
| | - Hidekazu Arai
- Laboratory of Clinical Nutrition and Management, Graduate School of Nutritional and Environmental Sciences, The University of Shizuoka, Shizuoka, Japan
| | - Shinsuke Katoh
- Department of Rehabilitation Medicine, Tokushima University Hospital, Tokushima, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Tokushima University, Tokushima, Japan
| | - Akihiko Kawaura
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan
| | - Eiji Takeda
- Kenshokai Gakuen College for Health and Welfare, Tokushima, Japan
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Jiang Y, Liao L, Li J, Wang L, Xie Z. Older Age Is Associated with Decreased Levels of VDR, CYP27B1, and CYP24A1 and Increased Levels of PTH in Human Parathyroid Glands. Int J Endocrinol 2020; 2020:7257913. [PMID: 32351560 PMCID: PMC7171617 DOI: 10.1155/2020/7257913] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/25/2019] [Accepted: 01/04/2020] [Indexed: 01/09/2023] Open
Abstract
Parathyroid glands contain the vitamin D receptor (VDR) and 25-hydroxyvitamin D-1α-hydroxylase (CYP27B1) and 24-hydroxylase (CYP24A1), which catalyze the production and degradation of 1,25-dihydroxyvitamin D [1,25(OH)2D], respectively. Previous studies have shown that the serum level of intact parathyroid hormone (iPTH) increases with age. We hypothesized that the expression of CYP27B1 or VDR in parathyroid glands decreases with age, which might account for the increased serum levels of iPTH due to decreased suppression of parathyroid hormone (PTH) secretion by 1,25(OH)2D in older people. To test this hypothesis, we examined relative expression levels of VDR, CYP27B1, CYP24A1, and PTH in specimens from parathyroid glands unintentionally removed during thyroidectomy for 70 patients varying in age from 10 to 70 years. The results showed that there was an inverse correlation between age and VDR, CYP27B1, and CYP24A1 expression (p < 0.05). A significant positive correlation between PTH expression levels and age was also observed (p < 0.05). These data indicate that older age is associated with decreased levels of VDR, CYP27B1, and CYP24A1 and increased levels of PTH in human parathyroid glands.
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Affiliation(s)
- Yi Jiang
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liyan Liao
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jina Li
- Department of Thoracic Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Larry Wang
- Department of Pathology, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA
| | - Zhongjian Xie
- Department of Metabolism and Endocrinology, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital of Central South University, 139 Middle Renmin Road, Changsha 410011, Hunan, China
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5
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Carrivick S, Alfonso H, Golledge J, Clancy P, Flicker L, Gunton JE, Hankey GJ, Almeida OP, Norman PE, Yeap BB. Differential associations of ferritin and 25-hydroxyvitamin D with fasting glucose and diabetes risk in community dwelling older men. Diabetes Metab Res Rev 2019; 35:e3172. [PMID: 30997951 DOI: 10.1002/dmrr.3172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 03/23/2019] [Accepted: 04/07/2019] [Indexed: 12/29/2022]
Abstract
AIMS We examined associations of ferritin and 25-hydroxyvitamin D with fasting glucose and prevalent diabetes in older men. METHODS Cross-sectional analysis of 4153 community-dwelling men aged 70 to 89 years in Western Australia. Plasma ferritin, 25-hydroxyvitamin D, and glucose were assayed. Diabetes was ascertained from self-report, medications, and fasting glucose. RESULTS There were 577 men with diabetes (13.9%). In the whole cohort, ferritin was associated with fasting glucose (0.051 mmol/L per 1 SD increase in ferritin, P = .006) and 25-hydroxyvitamin D was inversely associated (-0.085 mmol/L per 1 SD, P < .001). Ferritin was not associated with prevalent diabetes (highest vs. lowest quartile; >225 vs <66 μg/L: adjusted odds ratio [OR] 0.97, 95% confidence interval [CI], 0.74-1.27, P = .83). Higher vitamin D was associated with decreased odds of prevalent diabetes (highest vs lowest quartile; >82 nmol/L vs <53 nmol/L: OR = 0.57, 95% CI = 0.43-0.75, P < .001). There was no interaction between ferritin and vitamin D on diabetes risk. CONCLUSIONS In older men, ferritin is associated with fasting glucose but not prevalent diabetes. Higher 25-hydroxyvitamin D concentrations are independently associated with lower fasting glucose and reduced risk of diabetes. Clinical trials are required to determine whether interventions, which raise vitamin D concentrations, would reduce incidence of diabetes in this expanding demographic group.
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Affiliation(s)
- Simon Carrivick
- Medical School, University of Western Australia, Perth, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Australia
| | - Helman Alfonso
- School of Public Health, Curtin University, Perth, Australia
| | - Jonathan Golledge
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Australia
- Department of Vascular and Endovascular Surgery, Townsville Hospital, Townsville, Australia
| | - Paula Clancy
- Health Practitioners And Researchers Together-Blood Endothelium And Tissue (HART-BEAT), Townsville Hospital, Townsville, Australia
| | - Leon Flicker
- Medical School, University of Western Australia, Perth, Australia
- Western Australian Centre for Health and Ageing, Centre for Medical Research, University of Western Australia, Perth, Australia
| | - Jenny E Gunton
- Westmead Hospital, The University of Sydney, Sydney, Australia
| | - Graeme J Hankey
- Medical School, University of Western Australia, Perth, Australia
| | - Osvaldo P Almeida
- Medical School, University of Western Australia, Perth, Australia
- Western Australian Centre for Health and Ageing, Centre for Medical Research, University of Western Australia, Perth, Australia
| | - Paul E Norman
- Medical School, University of Western Australia, Perth, Australia
| | - Bu B Yeap
- Medical School, University of Western Australia, Perth, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Perth, Australia
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Suares A, Tapia C, González-Pardo V. Antineoplastic effect of 1α,25(OH) 2D 3 in spheroids from endothelial cells transformed by Kaposi's sarcoma-associated herpesvirus G protein coupled receptor. J Steroid Biochem Mol Biol 2019; 186:122-129. [PMID: 30308321 DOI: 10.1016/j.jsbmb.2018.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 09/27/2018] [Accepted: 10/06/2018] [Indexed: 12/24/2022]
Abstract
The Kaposi's sarcoma-associated herpesvirus G protein-coupled receptor (KSHV/vGPCR) is a key molecule in the pathogenesis of Kaposi's sarcoma. In endothelial cells, tumor maintenance and NF-κB activation depends on vGPCR constitutive expression and activity. We have previously demonstrated that 1α,25(OH)2D3 induces apoptosis in a VDR dependent manner, inhibits vGPCR cell growth and NF-κB activity. In this study, we developed a method to obtain multicellular spheroids (MCS) from endothelial cells expressing vGPCR in order to test whether MCS have a similar response to 2D-cultures after 1α,25(OH)2D3 treatment. Firstly, we found that vGPCR MCS started to form at 2nd day-growth, reaching a diameter up to 300 μm at 7th day-growth, whereas cells without vGPCR expression (SVEC) developed spheroids earlier and remained smaller throughout the period monitored. Secondly, vGPCR MCS size and architecture were analyzed during 1α,25(OH)2D3 (0.1-100 nM, 48 h) treatment. We found that once treated with 10 nM of 1α,25(OH)2D3 the initials MCS began a slight disaggregation with no changes in size; whereas at the higher dose (100 nM) the architecture of MCS was found completely broken. Furthermore, VDR mRNA expression increased significantly and this change was accompanied by a reduction of HIF-1α, an increase of VEGF, p21 and Bim mRNA expression. Finally, results from Western blot analysis showed that 1α,25(OH)2D3 decreased Akt and ERK1/2 protein phosphorylation. In conclusion, these data have revealed that 1α,25(OH)2D3 inhibits vGPCR MCS proliferation and induces apoptosis similar to vGPCR cells growing in 2D-cultures.
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Affiliation(s)
- Alejandra Suares
- Instituto de Ciencias Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-CONICET, San Juan 670, 8000 Bahía Blanca, Argentina
| | - Cinthya Tapia
- Instituto de Ciencias Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-CONICET, San Juan 670, 8000 Bahía Blanca, Argentina
| | - Verónica González-Pardo
- Instituto de Ciencias Biológicas y Biomédicas del Sur (INBIOSUR), Departamento de Biología Bioquímica y Farmacia, Universidad Nacional del Sur (UNS)-CONICET, San Juan 670, 8000 Bahía Blanca, Argentina.
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Vuksanovic M, Mihajlovic G, Beljic Zivkovic T, Gavrilovic A, Arsenovic B, Zvekic Svorcan J, Marjanovic Petkovic M, Vujovic S. Cross-talk between muscle and bone in postmenopausal women with hypovitaminosis D. Climacteric 2016; 20:31-36. [DOI: 10.1080/13697137.2016.1249840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- M. Vuksanovic
- »Zvezdara» University Medical Center, Endocrinology, Diabetes and Metabolic Disorders, Belgrade, Serbia
| | - G. Mihajlovic
- Geriatric Clinic »Zvezdara» University Medical Center, Belgrade, Serbia
| | - T. Beljic Zivkovic
- »Zvezdara» University Medical Center, Endocrinology, Diabetes and Metabolic Disorders, Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, Serbia
| | - A. Gavrilovic
- Division of Neurology, »Zvezdara» University Medical Center, Belgrade, Serbia
| | - B. Arsenovic
- »Zvezdara» University Medical Center, Endocrinology, Diabetes and Metabolic Disorders, Belgrade, Serbia
| | | | - M. Marjanovic Petkovic
- »Zvezdara» University Medical Center, Endocrinology, Diabetes and Metabolic Disorders, Belgrade, Serbia
| | - S. Vujovic
- Faculty of Medicine, University of Belgrade, Serbia
- Medical University Clinic for Endocrinology, Diabetes and Metabolic Diseases, Belgrade, Serbia
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Rémond D, Shahar DR, Gille D, Pinto P, Kachal J, Peyron MA, Dos Santos CN, Walther B, Bordoni A, Dupont D, Tomás-Cobos L, Vergères G. Understanding the gastrointestinal tract of the elderly to develop dietary solutions that prevent malnutrition. Oncotarget 2015; 6:13858-98. [PMID: 26091351 PMCID: PMC4546438 DOI: 10.18632/oncotarget.4030] [Citation(s) in RCA: 164] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 05/13/2015] [Indexed: 12/11/2022] Open
Abstract
Although the prevalence of malnutrition in the old age is increasing worldwide a synthetic understanding of the impact of aging on the intake, digestion, and absorption of nutrients is still lacking. This review article aims at filling the gap in knowledge between the functional decline of the aging gastrointestinal tract (GIT) and the consequences of malnutrition on the health status of elderly. Changes in the aging GIT include the mechanical disintegration of food, gastrointestinal motor function, food transit, chemical food digestion, and functionality of the intestinal wall. These alterations progressively decrease the ability of the GIT to provide the aging organism with adequate levels of nutrients, what contributes to the development of malnutrition. Malnutrition, in turn, increases the risks for the development of a range of pathologies associated with most organ systems, in particular the nervous-, muscoskeletal-, cardiovascular-, immune-, and skin systems. In addition to psychological, economics, and societal factors, dietary solutions preventing malnutrition should thus propose dietary guidelines and food products that integrate knowledge on the functionality of the aging GIT and the nutritional status of the elderly. Achieving this goal will request the identification, validation, and correlative analysis of biomarkers of food intake, nutrient bioavailability, and malnutrition.
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Affiliation(s)
- Didier Rémond
- UMR 1019, UNH, CRNH Auvergne, INRA, 63000 Clermont-Ferrand, France
- Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, 63000 Clermont-Ferrand, France
| | - Danit R. Shahar
- Department of Public Health, The S. Daniel Abraham International Center for Health and Nutrition, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | - Doreen Gille
- Institute for Food Sciences IFS, Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Berne, Switzerland
| | - Paula Pinto
- Escola Superior Agrária, Insituto Politécnico de Santarém, 2001-904 Santarem, Portugal
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | | | - Marie-Agnès Peyron
- UMR 1019, UNH, CRNH Auvergne, INRA, 63000 Clermont-Ferrand, France
- Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, 63000 Clermont-Ferrand, France
| | - Claudia Nunes Dos Santos
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
- Instituto de Biologia Experimental e Tecnológica, 2780-157 Oeiras, Portugal
| | - Barbara Walther
- Institute for Food Sciences IFS, Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Berne, Switzerland
| | - Alessandra Bordoni
- Department of Agri-Food Sciences and Technologies, University of Bologna, 47521 Cesena, Italy
| | - Didier Dupont
- UMR 1253, Science et Technologie du Lait & de l'Œuf, INRA, 35000 Rennes, France
| | | | - Guy Vergères
- Institute for Food Sciences IFS, Agroscope, Federal Department of Economic Affairs, Education and Research EAER, 3003 Berne, Switzerland
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Malafarina V, Uriz-Otano F, Gil-Guerrero L, Iniesta R, Zulet MA, Martinez JA. Study protocol: High-protein nutritional intervention based on β-hydroxy-β-methylbutirate, vitamin D3 and calcium on obese and lean aged patients with hip fractures and sarcopenia. The HIPERPROT-GER study. Maturitas 2013; 76:123-8. [DOI: 10.1016/j.maturitas.2013.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 06/06/2013] [Accepted: 06/08/2013] [Indexed: 12/19/2022]
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