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Pellegrino G, Ascenti V, Desiderio E, Carrafiello G. Vitamin D intoxication: myth or reality. Minerva Med 2023; 114:587-589. [PMID: 37462476 DOI: 10.23736/s0026-4806.23.08795-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2023]
Affiliation(s)
- Giuseppe Pellegrino
- Postgraduate School of Radiodiagnostics, University of Milan, Milan, Italy -
| | - Velio Ascenti
- Postgraduate School of Radiodiagnostics, University of Milan, Milan, Italy
| | - Elio Desiderio
- Faculty of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Gianpaolo Carrafiello
- Unit of Diagnostic and Interventional Radiology, Department of Radiology, Maggiore Polyclinic Hospital, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Oncology and Hematology-Oncology, University of Milan, Milan, Italy
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Burkhardt R. Vitamin D: review of physiology and clinical uses. Minerva Endocrinol (Torino) 2023; 48:88-105. [PMID: 36920117 DOI: 10.23736/s2724-6507.22.03652-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Interest in vitamin D has increased within the scientific community due to the impact of osteoporosis in the aging population. Vitamin D receptors are present in many tissues and low vitamin D status has been associated with many diseases in observational studies. There was hope that enhanced vitamin D provision might help prevent and treat some widespread disorders. Some of these hopes have been refuted by the results of recent large and well-conducted randomized trials. This review provides an overview of the basic physiology of vitamin D and an update on the evidence base for its clinical applications.
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Okoye C, Arosio B, Carino S, Putrino L, Franchi R, Rogani S, Cesari M, Mari D, Vitale G, Malara A, Calsolaro V, Monzani F. The Free Triiodothyronine/Free Thyroxine Ratio Is Associated with Frailty in Older Adults: A Longitudinal Multisetting Study. Thyroid 2023; 33:169-176. [PMID: 36641642 DOI: 10.1089/thy.2022.0422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Background: Various models have been proposed to predict frailty, including those based on clinical criteria and phenotypes. However, a simple biomarker associated with frailty has been not yet identified. The aim of this study is to evaluate the relationship between free triiodothyronine (fT3)/free thyroxine (fT4) ratio value and the degree of frailty among three different cohorts of older individuals: (1) acutely ill hospitalized patients, (2) nursing-home (NH) residents, and (3) home-dwelling centenarians. Methods: We performed a secondary analysis of de-identified patient-level data from two prospective observational studies on acutely hospitalized older patients (Geriatric Acute Unit [GAU]), and home-dwelling centenarians (CENT), and a retrospective-prospective observational study on older NH residents. Demographic characteristics, along with a 30-items Frailty Index (FI) and serum thyrotropin, fT3 and fT4 measurements were obtained. Results: Six hundred fifteen individuals (aged 86.4 ± 8.9 years; 55.1% females) were included in the study, including 298 (48.5%) GAU, 250 (40.6%) NH, and 67 (10.9%) CENT. A significant inverse relationship between fT3/fT4 ratio and FI values was observed (ρs = -0.17 [confidence interval; CI: -0.092 to 0.252], p < 0.001), and this was confirmed by logistic multivariate analysis (β = -0.44, odds ratio [OR]: 0.64 [CI: 0.47-0.87], p < 0.001) (after adjustment for age, sex, and cohorts). Moreover, a progressively decreased mortality risk was associated with rising fT3/fT4 ratio (OR 0.60 [CI: 0.44-0.80] β = -0.51, p < 0.001]. Conclusions: The fT3/fT4 ratio value was inversely correlated with frailty degree and mortality risk in a large cohort of older individuals, including centenarians, regardless of their sex and clinical condition. fT3/fT4 ratio value could represent an easily measured independent biochemical marker of frailty degree in older people.
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Affiliation(s)
- Chukwuma Okoye
- Geriatrics Unit, Department of Clinical and Experimental Medicine, Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Pisa, Italy
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Solna, Sweden
| | - Beatrice Arosio
- Geriatrics Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | | | | | - Riccardo Franchi
- Geriatrics Unit, Department of Clinical and Experimental Medicine, Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Pisa, Italy
| | - Sara Rogani
- Geriatrics Unit, Department of Clinical and Experimental Medicine, Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Pisa, Italy
| | - Matteo Cesari
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Milan, Italy
| | - Daniela Mari
- Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Giovanni Vitale
- Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Istituto Auxologico Italiano, IRCCS, Milan, Italy
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), University of Milan, Milan, Italy
| | | | - Valeria Calsolaro
- Geriatrics Unit, Department of Clinical and Experimental Medicine, Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Pisa, Italy
| | - Fabio Monzani
- Geriatrics Unit, Department of Clinical and Experimental Medicine, Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Pisa, Italy
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Jo D, Kim HK, Kim YK, Song J. Transcriptome Profile of Thyroid Glands in Bile Duct Ligation Mouse Model. Int J Mol Sci 2022; 23:ijms23158244. [PMID: 35897811 PMCID: PMC9332885 DOI: 10.3390/ijms23158244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Thyroid hormone (TH) contributes to multiple cellular mechanisms in the liver, muscle cells, adipose tissue, and brain, etc. In particular, the liver is an important organ in TH metabolism for the conversion of thyronine (T4) into triiodothyronine (T3) by the deiodinase enzyme. TH levels were significantly decreased and thyroid-stimulating hormone (TSH) levels were significantly increased in patients with liver failure compared with normal subjects. Among liver failure diseases, hepatic encephalopathy (HE) deserves more attention because liver damage and neuropathologies occur simultaneously. Although there is numerous evidence of TH dysregulation in the HE model, specific mechanisms and genetic features of the thyroid glands in the HE model are not fully understood. Here, we investigated the significantly different genes in the thyroid glands of a bile duct ligation (BDL) mouse model as the HE model, compared to the thyroid glands of the control mouse using RNA sequencing. We also confirmed the alteration in mRNA levels of thyroid gland function-related genes in the BDL mouse model. Furthermore, we evaluated the increased level of free T4 and TSH in the BDL mouse blood. Thus, we emphasize the potential roles of TH in liver metabolism and suggest that thyroid dysfunction-related genes in the HE model should be highlighted for finding the appropriate solution for an impaired thyroid system in HE.
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Affiliation(s)
- Danbi Jo
- Department of Anatomy, Chonnam National University Medical School, Seoyangro 264, Hwasun 58128, Korea;
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Seoyangro 264, Hwasun 58128, Korea
| | - Hee Kyung Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Medical School, Seoyangro 264, Hwasun 58128, Korea;
| | - Young-Kook Kim
- Department of Biochemistry, Chonnam National University Medical School, Seoyangro 264, Hwasun 58128, Korea;
| | - Juhyun Song
- Department of Anatomy, Chonnam National University Medical School, Seoyangro 264, Hwasun 58128, Korea;
- Biomedical Science Graduate Program (BMSGP), Chonnam National University, Seoyangro 264, Hwasun 58128, Korea
- Correspondence: ; Tel.: +82-61-379-2706
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Arosio B, Rossi PD, Ferri E, Cesari M, Vitale G. Characterization of Vitamin D Status in Older Persons with Cognitive Impairment. Nutrients 2022; 14:nu14061142. [PMID: 35334800 PMCID: PMC8949190 DOI: 10.3390/nu14061142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/24/2022] [Accepted: 03/03/2022] [Indexed: 01/13/2023] Open
Abstract
Vitamin D exerts a role in the maintenance of cognitive abilities and in frailty. Although several studies evaluated the interactions between vitamin D and cognitive impairment, results were conflicting. In a cohort of community-dwelling older persons, we described the association between vitamin D levels and cognitive decline and all-cause dementia evaluating frailty’s contribution. Our cohort included 509 adults, aged 64–92 years: 176 patients with mild cognitive impairment (MCI), 59 with Alzheimer’s Disease (AD), 26 with idiopathic Normal Pressure Hydrocephalus (iNPH), 133 with mixed dementia (MD) and 115 without cognitive decline. Frailty was measured by frailty index, and serum 25-hydroxyvitamin D concentrations through electrochemiluminescence immunoassays. We found a significant association between vitamin D levels and Mini Mental State Examination independently of cognitive impairment, age, sex and frailty. The patients with dementia (AD and MD) showed the lowest vitamin D levels, while MCI patients showed higher levels than the other groups. The most severe deficiency was observed in MD patients, the most aged as well as cognitively and functionally impaired. In conclusion, in our community-dwelling older persons investigated for a suspected cognitive impairment, we observed an association between vitamin D levels and cognitive decline, regardless of the frailty status.
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Affiliation(s)
- Beatrice Arosio
- Department of Clinical Sciences and Community Health, University of Milan, Via Pace 9, 20122 Milan, Italy;
- Correspondence: ; Tel.: +39-02-55035405; Fax: +39-02-50320734
| | - Paolo Dionigi Rossi
- Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Via Pace 9, 20122 Milan, Italy; (P.D.R.); (E.F.)
| | - Evelyn Ferri
- Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Via Pace 9, 20122 Milan, Italy; (P.D.R.); (E.F.)
| | - Matteo Cesari
- Department of Clinical Sciences and Community Health, University of Milan, Via Pace 9, 20122 Milan, Italy;
- Geriatric Unit, IRCCS Istituti Clinici Scientifici Maugeri, Via Camaldoli 64, 20138 Milan, Italy
| | - Giovanni Vitale
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Vanvitelli 32, 20133 Milan, Italy;
- Istituto Auxologico Italiano IRCCS, Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Via Zucchi 18, 20095 Cusano Milanino, Italy
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