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Zhang L, Shang F, Liu C, Zhai X. The correlation between iodine and metabolism: a review. Front Nutr 2024; 11:1346452. [PMID: 38567251 PMCID: PMC10985161 DOI: 10.3389/fnut.2024.1346452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/08/2024] [Indexed: 04/04/2024] Open
Abstract
Iodine is involved in the synthesis of thyroid hormones and plays a crucial role in human life. Both iodine deficiency and excess are common issues in certain populations. Iodine also has extrathyroidal effects on organs that can uptake it independently of thyroid hormones. Recently, multiple clinical studies have shown a connection between iodine intake and metabolic disorders, such as metabolic syndrome, obesity, diabetes, hypertension, and dyslipidemia. However, the results of these studies have been inconsistent, and the mechanisms behind these associations are still not well understood. Therefore, in this review, we aim to examine the recent research progress regarding the relationship between iodine and metabolic disorders, along with the relevant mechanisms.
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Affiliation(s)
- Le Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fangjian Shang
- Department of General Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Cong Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiaodan Zhai
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
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Peila C, Riboldi L, Spada E, Coscia A, Barbagallo I, Li Volti G, Galvano F, Gazzolo D. The Gestational Pathologies Effect on the Human Milk Redox Homeostasis: A First Step towards Its Definition. Nutrients 2023; 15:4546. [PMID: 37960198 PMCID: PMC10648900 DOI: 10.3390/nu15214546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Human Milk (HM) is a dynamic nourishment; its composition is influenced by several conditions such as gestational age, maternal diet and ethnicity. It appears important to evaluate the impact that gestational pathologies have on HM components and if their presence, as a source of oxidative stress in the mother, influence milk's redox homeostasis. To assess the effect of Preeclampsia (PE) and Gestational Diabetes Mellitus (GDM) on some aspects of human milk redox homeostasis, we chose to investigate both oxidative and antioxidant aspects, with, respectively, Lipid hydroperoxides (LOOHs) and Glutathione (GSH). METHODS Women with PE, GDM and who were healthy were recruited for this study. Colostrum, transitional and mature milk samples were collected. GSH and LOOHs levels were measured using a spectrophotometric test. To investigate the effect of pathology on redox homeostasis, a mixed linear model with unistructural covariance structure was performed. RESULTS A total of 120 mothers were recruited. The GSH concentration results were significantly lower in GDM women than in healthy women only in colostrum (p < 0.01). No other differences emerged. LOOHs was not detectable in almost all the samples. DISCUSSION Our study is the first to extensively evaluate these components in the HM of women with these gestational pathologies. The main observation is that GDM can alter the GSH level of HM, mainly in colostrum.
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Affiliation(s)
- Chiara Peila
- Neonatal Unit, Department of Public Health and Pediatrics, University of Turin, 10100 Turin, Italy
| | - Lorenzo Riboldi
- Neonatal Unit, Department of Public Health and Pediatrics, University of Turin, 10100 Turin, Italy
| | - Elena Spada
- Neonatal Unit, Department of Public Health and Pediatrics, University of Turin, 10100 Turin, Italy
| | - Alessandra Coscia
- Neonatal Unit, Department of Public Health and Pediatrics, University of Turin, 10100 Turin, Italy
| | - Ignazio Barbagallo
- Department of Biological Chemistry, Medical Chemistry and Molecular Biology, University of Catania, 95131 Catania, Italy
| | - Giovanni Li Volti
- Department of Biological Chemistry, Medical Chemistry and Molecular Biology, University of Catania, 95131 Catania, Italy
| | - Fabio Galvano
- Department of Biological Chemistry, Medical Chemistry and Molecular Biology, University of Catania, 95131 Catania, Italy
| | - Diego Gazzolo
- Neonatal Intensive Care Unit, University of Chieti-Pescara, 66100 Chieti, Italy
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Srivastava R, Tiwari S, Banakar PS, Bhakat M, Mani V, Mohanty TK, Mondal G. Iodine Supplementation Improved Antioxidant Status, Hormonal Status, Sexual Behavior, and Semen Production Performance of Bos indicus Bulls Under Tropical Climatic Condition. Biol Trace Elem Res 2022; 200:4690-4703. [PMID: 35048268 DOI: 10.1007/s12011-021-03066-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/11/2021] [Indexed: 11/25/2022]
Abstract
Iodine is anessential micronutrient that plays a crucial role in male reproduction (sexual behavior and semen production performance) by modulating thyroid function and the antioxidant status of the animal. Nonetheless, in Bos indicus bulls, a thorough evaluation of the effects of dietary iodine supplementation on antioxidant status, seminal quality parameters, and its interaction with other minerals is not documented. Twelve Bos indicus (Sahiwal) bulls were distributed into three groups (n = 4 in each group) viz. T1 (control), T2, and T3 and fed diets containing 0.250, 0.375, and 0.500 ppm iodine/ kg dry matter intake, corresponding to 0%, 50%, and 100% higher than ICAR (2013) recommendations, respectively. The experimental feeding was carried out for 60 days and the effects on nutrient utilization, hormonal and antioxidant status, and sperm function tests were investigated. Results revealed that body weight, dry matter intake, and nutrient digestibility remained unaffected by dietary supplementation of iodine. Testosterone and thyroxine hormone concentrations were improved (p<0.05) in T2 and T3 groups. Blood and seminal iodine content were also higher (p<0.05) in both the supplemented groups (T2 and T3). Sperm functions viz. viability, physical membrane integrity, acrosomal integrity, motility, and mitochondrial membrane potential were improved (p<0.05) due to iodine supplementation. Furthermore, lipid peroxidation and membrane scrambling in spermatozoa were reduced (p<0.05) in T2 and T3 groups. Blood antioxidant status (total antioxidant activity and GPx levels) was improved (p<0.05) in T2 and T3. Sexual behavior was also improved (p<0.05) in iodine-supplemented groups. Hence, it can be concluded that iodine supplementation at the dose rate of 0.500 ppm in the Bos indicus bull diet is beneficial in improving hormonal status, antioxidant status, and semen quality.
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Affiliation(s)
- Rashika Srivastava
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Saurabh Tiwari
- Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - P S Banakar
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Mukesh Bhakat
- Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Veena Mani
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - T K Mohanty
- Artificial Breeding Research Centre, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Goutam Mondal
- Animal Nutrition Division, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India.
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Karbownik-Lewińska M, Stępniak J, Iwan P, Lewiński A. Iodine as a potential endocrine disruptor-a role of oxidative stress. Endocrine 2022; 78:219-240. [PMID: 35726078 PMCID: PMC9584999 DOI: 10.1007/s12020-022-03107-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/02/2022] [Indexed: 12/19/2022]
Abstract
PURPOSE Iodine is an essential micronutrient required for thyroid hormone biosynthesis. However, overtreatment with iodine can unfavorably affect thyroid physiology. The aim of this review is to present the evidence that iodine-when in excess-can interfere with thyroid hormone synthesis and, therefore, can act as a potential endocrine-disrupting chemical (EDC), and that this action, as well as other abnormalities in the thyroid, occurs-at least partially-via oxidative stress. METHODS We reviewed published studies on iodine as a potential EDC, with particular emphasis on the phenomenon of oxidative stress. RESULTS This paper summarizes current knowledge on iodine excess in the context of its properties as an EDC and its effects on oxidative processes. CONCLUSION Iodine does fulfill the criteria of an EDC because it is an exogenous chemical that interferes-when in excess-with thyroid hormone synthesis. However, this statement cannot change general rules regarding iodine supply, which means that iodine deficiency should be still eliminated worldwide and, at the same time, iodine excess should be avoided. Universal awareness that iodine is a potential EDC would make consumers more careful regarding their diet and what they supplement in tablets, and-what is of great importance-it would make caregivers choose iodine-containing medications (or other chemicals) more prudently. It should be stressed that compared to iodine deficiency, iodine in excess (acting either as a potential EDC or via other mechanisms) is much less harmful in such a sense that it affects only a small percentage of sensitive individuals, whereas the former affects whole populations; therefore, it causes endemic consequences.
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Affiliation(s)
- Małgorzata Karbownik-Lewińska
- Department of Oncological Endocrinology, Medical University of Lodz, 90-752, Lodz, Poland.
- Polish Mother's Memorial Hospital-Research Institute, 93-338, Lodz, Poland.
| | - Jan Stępniak
- Department of Oncological Endocrinology, Medical University of Lodz, 90-752, Lodz, Poland
| | - Paulina Iwan
- Department of Oncological Endocrinology, Medical University of Lodz, 90-752, Lodz, Poland
| | - Andrzej Lewiński
- Polish Mother's Memorial Hospital-Research Institute, 93-338, Lodz, Poland
- Department of Endocrinology and Metabolic Diseases, Medical University of Lodz, 93-338, Lodz, Poland
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Breast Milk Iodine Concentration (BMIC) as a Biomarker of Iodine Status in Lactating Women and Children <2 Years of Age: A Systematic Review. Nutrients 2022; 14:nu14091691. [PMID: 35565659 PMCID: PMC9104537 DOI: 10.3390/nu14091691] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 01/01/2023] Open
Abstract
Background: Iodine is needed for the production of thyroid hormones, which are essential for infant growth and development. Given that there are wide variations in breast milk iodine concentration (BMIC) and urinary iodine concentration (UIC), it is unclear if BMIC is associated with UIC in populations residing in iodine sufficient or deficient areas. Aim: To investigate if BMIC can be used as a biomarker for iodine status in lactating women and children <2 years of age. Methods: Electronic databases; PubMed, Web of Science and Scopus were searched until year 2021, for studies investigating the relationship between BMIC and UIC. Studies were reviewed for eligibility, according to inclusion and exclusion criteria, followed by data extraction, according to the PRISMA guidelines. Results: Overall, 51 studies met the criteria for inclusion in the systematic review. BMIC ranged from 18 to 1153 µg/L. In iodine-deficient and iodine-sufficient lactating women, BMIC ranged from 26 to 185 µg/L and 15 to 1006 µg/L, respectively. In most studies, the categorisation of iodine status assessed by median UIC was consistent with the categorisation of iodine status assessed by median BMIC cut off of ≥100 µg/L, to determine iodine sufficiency in lactating women and children <2 years of age. Conclusions: The systematic review indicated that BMIC is a promising biomarker of iodine status in lactating women and children <2 years of age. However, these data need to be interpreted cautiously, given the study limitations in the included studies. Future studies should consider investigating the optimal median BMIC, as there is a lack of high-quality observational and intervention studies in lactating women and infants.
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Maldonado-Araque C, Valdés S, Badía-Guillén R, Lago-Sampedro A, Colomo N, Garcia-Fuentes E, Gutierrez-Repiso C, Goday A, Calle-Pascual A, Castaño L, Castell C, Delgado E, Menendez E, Franch-Nadal J, Gaztambide S, Girbés J, Chaves FJ, Soriguer F, Rojo-Martínez G. Iodine Deficiency and Mortality in Spanish Adults: Di@bet.es Study. Thyroid 2021; 31:106-114. [PMID: 32781944 PMCID: PMC7840306 DOI: 10.1089/thy.2020.0131] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background: Longitudinal data assessing the impact of iodine deficiency (ID) on mortality are scarce. We aimed to study the association between the state of iodine nutrition and the risk of total and cause-specific mortality in a representative sample of the Spanish adult population. Methods: We performed a longitudinal observational study to estimate mortality risk according to urinary iodine (UI) concentrations using a sample of 4370 subjects >18 years representative of the Spanish adult population participating in the nationwide study Di@bet.es (2008-2010). We used Cox regression to assess the association between UI at the start of the study (<50, 50-99, 100-199, 200-299, and ≥300 μg/L) and mortality during follow-up (National death registry-end of follow-up December 2016) in raw models, and adjusted for possible confounding variables: age, sex, educational level, hypertension, diabetes, obesity, chronic kidney disease, smoking, hypercholesterolemia, thyroid dysfunction, diagnosis of cardiovascular disease or cancer, area of residence, physical activity, adherence to Mediterranean diet, dairy and iodinated salt intake. Results: A total of 254 deaths were recorded during an average follow-up period of 7.3 years. The causes of death were cardiovascular 71 (28%); cancer 85 (33.5%); and other causes 98 (38.5%). Compared with the reference category with adequate iodine nutrition (UI 100-300 μg/L), the hazard ratios (HRs) of all-cause mortality in the category with UI ≥300 μg/L were 1.04 (95% confidence interval [CI 0.54-1.98]); however, in the categories with 50-99 UI and <50 μg/L, the HRs were 1.29 [CI 0.97-1.70] and 1.71 [1.18-2.48], respectively (p for trend 0.004). Multivariate adjustment did not significantly modify the results. Conclusions: Our data indicate an excess mortality in individuals with moderate-severe ID adjusted for other possible confounding factors.
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Affiliation(s)
- Cristina Maldonado-Araque
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Sergio Valdés
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Address correspondence to: Sergio Valdés, MD, PhD, Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga/Universidad de Málaga, IBIMA, Plaza del Hospital Civil s/n, Malaga 29009, Spain
| | - Rocío Badía-Guillén
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Ana Lago-Sampedro
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Natalia Colomo
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Eduardo Garcia-Fuentes
- UGC de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Carolina Gutierrez-Repiso
- CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, Instituto de Investigagión Biomedica de Málaga-IBIMA, Málaga, Spain
| | - Albert Goday
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain
| | - Alfonso Calle-Pascual
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario S. Carlos de Madrid, Madrid, Spain
| | - Luis Castaño
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Hospital Universitario Cruces, BioCruces Bizkaia, UPV/EHU, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Conxa Castell
- Department of Health, Public Health Agency of Catalonia, Barcelona, Spain
| | - Elías Delgado
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias/University of Oviedo, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Edelmiro Menendez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Central de Asturias/University of Oviedo, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Josep Franch-Nadal
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- EAP Raval Sud, Institut Català de la Salut, Red GEDAPS, Primary Care, Unitat de Suport a la Recerca (IDIAP—Fundació Jordi Gol), Barcelona, Spain
| | - Sonia Gaztambide
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital Universitario Cruces, BioCruces Bizkaia, UPV/EHU, Barakaldo, Spain
| | - Joan Girbés
- Diabetes Unit, Hospital Arnau de Vilanova, Valencia, Spain
| | - Francisco Javier Chaves
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Genomic Studies and Genetic Diagnosis Unit, Fundación de Investigación del Hospital Clínico de Valencia-INCLIVA, Valencia, Spain
| | - Federico Soriguer
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Gemma Rojo-Martínez
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomedica de Málaga-IBIMA, Málaga, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
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Nazeri P, Tahmasebinejad Z, Hedayati M, Mirmiran P, Azizi F. Is breast milk iodine concentration an influential factor in growth- and obesity-related hormones and infants' growth parameters? MATERNAL & CHILD NUTRITION 2021; 17:e13078. [PMID: 32990418 PMCID: PMC7729768 DOI: 10.1111/mcn.13078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/27/2020] [Accepted: 09/02/2020] [Indexed: 01/22/2023]
Abstract
Iodine, a key constituent of thyroid hormones, plays an indirect role in prenatal and postnatal growth. This study aimed to investigate whether breast milk iodine concentration (BMIC) is associated with growth- and obesity-related hormones and subsequently the infants' anthropometric measures. In present study conducted in Tehran (Iran), 94 lactating mothers and healthy infants who were exclusively breastfed were included. Concentrations of iodine, insulin-like growth factor-1 (IGF-1), adiponectin (AD) and leptin (LP) were measured in breast milk samples collected during 3- to 5-day postpartum. Anthropometric measures of infants were assessed at 6 months of life, and age- and sex-specific z-score values were calculated using the World Health Organization growth standards. The median (interquartile range) iodine, IGF-1, AD and LP concentrations were 232.5 (157.5-296.0) μg L-1 , 15.7 (11.9-21.1) ng ml-1 , 13.2 (5.1-29.8) mg L-1 and 1.16 (0.86-1.70) ng ml-1 in breast milk, respectively. No significant correlations were found between BMIC and IGF-1, AD and LP concentrations during the first few days postpartum. In adjusted regression model, BMIC was positively associated with weight-for-length z score of infants. In the presence of IGF-1, AD or LP, the coefficients of BMIC for weight-for-length z score of infants were β = .003 (P = .021), β = .002 (P = .028) or β = .003 (P = .013), respectively. No other anthropometric measurements were associated with iodine or growth- and obesity-related hormones in breast milk. Our findings indicate that BMIC is a potential contributor to infants' growth status, independent of IGF-1, AD or LP concentrations in breast milk. The underlying mechanisms remain to be elucidated.
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Affiliation(s)
- Pantea Nazeri
- Family Health Institute, Breastfeeding Research CenterTehran University of Medical SciencesTehranIran
| | - Zhale Tahmasebinejad
- Nutrition and Endocrine Research Center, Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran
| | - Mehdi Hedayati
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran
| | - Parvin Mirmiran
- Nutrition and Endocrine Research Center, Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research InstituteShahid Beheshti University of Medical SciencesTehranIran
| | - Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine SciencesShahid Beheshti University of Medical SciencesTehranIran
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Oleic Acid Protects Against Insulin Resistance by Regulating the Genes Related to the PI3K Signaling Pathway. J Clin Med 2020; 9:jcm9082615. [PMID: 32806641 PMCID: PMC7463472 DOI: 10.3390/jcm9082615] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/28/2020] [Accepted: 08/10/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The effects of different types of fatty acids on the gene expression of key players in the IRS1/PI3K signaling pathway have been poorly studied. MATERIAL AND METHODS We analyzed IRS1, p85α, and p110β mRNA expression and the fatty acid composition of phospholipids in visceral adipose tissue from patients with morbid obesity and from non-obese patients. Moreover, we analyzed the expression of those genes in visceral adipocytes incubated with oleic, linoleic, palmitic and dosahexaenoic acids. RESULTS We found a reduced IRS1 expression in patients with morbid obesity, independent of insulin resistance, and a reduced p110β expression in those with lower insulin resistance. A positive correlation was found between p85α and stearic acid, and between IRS1 and p110β with palmitic and dosahexaenoic acid. In contrast, a negative correlation was found between p85α and oleic acid, and between IRS1 and p110β with linoleic, arachidonic and adrenic acid. Incubation with palmitic acid decreased IRS1 expression. p85α was down-regulated after incubation with oleic and dosahexaenoic acid and up-regulated with palmitic acid. p110β expression was increased and decreased after incubation with oleic and palmitic acid, respectively. The ratio p85α/p110β was decreased by oleic and dosahexaenoic acid and increased by palmitic acid. CONCLUSIONS Our in vitro results suggest a detrimental role of palmitic acid on the expression of gene related to insulin signaling pathway, with oleic acid being the one with the higher and more beneficial effects. DHA had a slight beneficial effect. Fatty acid-induced regulation of genes related to the IRS1/PI3K pathway may be a novel mechanism by which fatty acids regulate insulin sensitivity in visceral adipocytes.
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A Review of Bioactive Factors in Human Breastmilk: A Focus on Prematurity. Nutrients 2019; 11:nu11061307. [PMID: 31185620 PMCID: PMC6628333 DOI: 10.3390/nu11061307] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 12/20/2022] Open
Abstract
Preterm birth is an increasing worldwide problem. Prematurity is the second most common cause of death in children under 5 years of age. It is associated with a higher risk of several pathologies in the perinatal period and adulthood. Maternal milk, a complex fluid with several bioactive factors, is the best option for the newborn. Its dynamic composition is influenced by diverse factors such as maternal age, lactation period, and health status. The aim of the present review is to summarize the current knowledge regarding some bioactive factors present in breastmilk, namely antioxidants, growth factors, adipokines, and cytokines, paying specific attention to prematurity. The revised literature reveals that the highest levels of these bioactive factors are found in the colostrum and they decrease along the lactation period; bioactive factors are found in higher levels in preterm as compared to full-term milk, they are lacking in formula milk, and decreased in donated milk. However, there are still some gaps and inconclusive data, and further research in this field is needed. Given the fact that many preterm mothers are unable to complete breastfeeding, new information could be important to develop infant supplements that best match preterm human milk.
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Martysiak-Żurowska D, Puta M, Kiełbratowska B. The effect of convective heating and microwave heating on antioxidant enzymes in pooled mature human milk. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2018.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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The changes in the transcriptomic profiling of subcutaneous adipose tissue after bariatric surgery depend on the insulin resistance state. Surg Obes Relat Dis 2018; 14:1182-1191. [DOI: 10.1016/j.soard.2018.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 11/17/2022]
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Li Y, Chen D, Li J, Zhang XX, Wang CF, Wang JM. Changes in superoxide dismutase activity postpartum from Laoshan goat milk and factors influencing its stability during processing. ITALIAN JOURNAL OF ANIMAL SCIENCE 2018. [DOI: 10.1080/1828051x.2018.1448306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Yu Li
- College of Food Science and Engineering, Qilu University of Technology, Jinan, China
| | - Di Chen
- College of Food Science and Engineering, Qilu University of Technology, Jinan, China
| | - Jing Li
- College of Food Science and Engineering, Qilu University of Technology, Jinan, China
| | - Xue-Xi Zhang
- College of Food Science and Engineering, Qilu University of Technology, Jinan, China
| | - Cun-Fang Wang
- College of Food Science and Engineering, Qilu University of Technology, Jinan, China
| | - Jian-Min Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian, China
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Qin F, Pan X, Yang J, Li S, Shao L, Zhang X, Liu B, Li J. Dietary Iodine Affected the GSH-Px to Regulate the Thyroid Hormones in Thyroid Gland of Rex Rabbits. Biol Trace Elem Res 2018; 181:251-257. [PMID: 28577235 DOI: 10.1007/s12011-017-1064-5] [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: 03/27/2017] [Accepted: 05/23/2017] [Indexed: 12/17/2022]
Abstract
Iodine (I) is an essential trace element that can influence animal health and productivity. In this study, we investigated the effects of dietary iodine on the antioxidant indices of organ (liver and thyroid gland) and messenger RNA (mRNA) expression of glutathione peroxidase (GSH-Px) in Rex rabbits. A total of 120 4-month-old Rex rabbits (2235.4 ± 13.04 g BW) were divided into four equal groups, and their diets were supplemented with iodine (0, 0.2, 2, or 4 mg/kg dry matter (DM)). The iodine concentration in basal diet (control group) was 0.36 mg/kg DM. In most of measured parameters, supplemental iodine exerted no significant effect. Growth and slaughter performance and organ weight were not influenced significantly by iodine supplementation. Serum T3 was significantly lower in 2-mg I group than in 0.2 and 4-mg I groups (P < 0.05). Superoxide dismutase (SOD), GSH-Px, methane dicarboxylic aldehyde (MDA), and thyroperoxidase (TPO) in the serum and liver were not influenced (P > 0.05). Conversely, serum catalase (CAT) was significantly reduced (P < 0.05). In the thyroid, GSH-Px was higher in the 2-mg I group than in the 0.2- and 4-mg I groups (P < 0.05). RT-PCR results showed that the mRNA expression level of GSH-Px in the liver was not significantly influenced (P > 0.05). In the thyroid gland, the mRNA expression level of GSH-Px was higher in the 2-mg I group than in the 4-mg I group (P < 0.05), which agreed with the activity of GSH-Px. In conclusion, iodine supplementation exerted no effect on the performance and antioxidant capacity of the body, but dietary iodine influenced serum T3 or GSH-Px in the thyroid gland. Thus, on the basis of serum T3 and GSH-Px levels in the thyroid gland, we hypothesized that GSH-Px secretion was increased by adding dietary iodine in the thyroid, which may inhibit the H2O2 generation and further influence the thyroid hormone synthesis.
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Affiliation(s)
- Feng Qin
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Xiaoqing Pan
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Jie Yang
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China.
| | - Sheng Li
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Le Shao
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Xia Zhang
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Beiyi Liu
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
| | - Jian Li
- Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, People's Republic of China
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Iodine is associated to semen quality in men who undergo consultations for infertility. Reprod Toxicol 2017; 73:1-7. [DOI: 10.1016/j.reprotox.2017.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 02/02/2023]
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Growth hormone-releasing hormone is produced by adipocytes and regulates lipolysis through growth hormone receptor. Int J Obes (Lond) 2017. [PMID: 28626214 DOI: 10.1038/ijo.2017.145] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Growth hormone-releasing hormone (GHRH) has a crucial role in growth hormone (GH) secretion, but little is known about its production by adipocytes and its involvement in adipocyte metabolism. OBJECTIVES To determine whether GHRH and its receptor (GHRH-R) are present in human adipocytes and to study their levels in obesity. Also, to analyze the effects of GHRH on human adipocyte differentiation and lipolysis. METHODS GHRH/GHRH-R and GH/GH-R mRNA expression levels were analyzed in human mature adipocytes from non-obese and morbidly obese subjects. Human mesenchymal stem cells (HMSC) were differentiated to adipocytes with GHRH (10-14-10-8 M). Adipocyte differentiation, lipolysis and gene expression were measured and the effect of GH-R silencing was determined. RESULTS Mature adipocytes from morbidly obese subjects showed a higher expression of GHRH and GH-R, and a lower expression of GHRH-R and GH than non-obese subjects (P<0.05). A total of 10-14-10-10 M GHRH induced an inhibition of lipid accumulation and PPAR-γ expression (P<0.05), and an increase in glycerol release and HSL expression (P<0.05) in human differentiated adipocytes. A total of 10-12-10-8 M GHRH decreased GHRH-R expression in human differentiated adipocytes (P<0.05). A total of 10-10-10-8 M GHRH increased GH and GH-R expression in human differentiated adipocytes (P<0.05). The effects of GHRH at 10-10 M on adipocyte differentiation and lipolysis were blocked when GH-R expression was silenced. CONCLUSIONS GHRH and GHRH-R are expressed in human adipocytes and are negatively associated. GHRH at low doses may exert an anti-obesity effect by inhibiting HMSC differentiation in adipocytes and by increasing adipocyte lipolysis in an autocrine or paracrine pathway. These effects are mediated by GH and GH-R.
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The pro-/anti-inflammatory effects of different fatty acids on visceral adipocytes are partially mediated by GPR120. Eur J Nutr 2016; 56:1743-1752. [DOI: 10.1007/s00394-016-1222-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 04/28/2016] [Indexed: 12/26/2022]
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17
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Liu D, Lin X, Yu F, Zhang M, Chen H, Bao W, Wang X. Effects of 3,5-Diiodotyrosine and Potassium Iodide on Thyroid Function and Oxidative Stress in Iodine-Excess Wistar Rats. Biol Trace Elem Res 2015; 168:447-52. [PMID: 26002813 DOI: 10.1007/s12011-015-0371-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 05/13/2015] [Indexed: 02/03/2023]
Abstract
The objective of this study was to investigate the effects of organic iodine (3,5-diiodotyrosine, DIT) and inorganic iodine (potassium iodine, KI) on thyroid function and oxidative stress in iodine-excess Wistar rats. Seventy-two Wistar rats were randomly divided into eight groups: normal control (NC), thyroid tablet-induced hyperthyroidism model (HM), low DIT (L-DIT), medium DIT (M-DIT), high DIT (H-DIT), low KI (L-KI), medium KI (M-KI), and high KI (H-KI). All rats were fed ad libitum for 30 days. Morphological changes in the thyroid, absolute and relative weights of the thyroid, thyroid function markers free triiodothyronine (FT3) and free thyroxine (FT4), urinary iodine level, and oxidative stress indicators were measured. Compared to the HM groups, the FT3 and FT4 levels decreased in the L-DIT groups; the thyroid weight and thyroid weight/body weight values decreased markedly in the L-DIT and M-DIT groups; serum superoxide dismutase/malondialdehyde increased markedly; glutathione peroxidase activity increased markedly in the L-DIT groups; and malondialdehyde levels decreased significantly in the M-DIT groups. However, the FT3 and FT4 levels decreased and glutathione peroxidase levels increased significantly in the DIT groups compared to their corresponding KI groups. Additionally, urinary iodine levels increased significantly in both DIT and KI groups, while the highest urinary iodine excretion was showed in the DIT groups among groups. When the addition of iodine with the same doses in iodine-excess rats, although neither DIT nor KI normalized iodine levels in the iodine-excess rats, the DIT did less damage than did KI to thyroid follicular cells. Therefore, DIT rather than KI had a protective effect by balancing the antioxidant system when exposed to supraphysiological iodine. These suggest that DIT may be used as a new alternative iodized salt in the universal salt iodization to avoid the potential damage of surplus KI.
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Affiliation(s)
- Dan Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Shandong University, 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China
| | - Xinying Lin
- Department of Nutrition and Food Hygiene, School of Public Health, Shandong University, 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China.
| | - Fugui Yu
- Shandong food and drug administration, Jinan, Shandong, China
| | - Man Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Shandong University, 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China
| | - Hongxia Chen
- Institution of Biomedicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Wei Bao
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xia Wang
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, 44 Wenhuaxi Road, Jinan, 250012, People's Republic of China.
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The expression of genes involved in jejunal lipogenesis and lipoprotein synthesis is altered in morbidly obese subjects with insulin resistance. J Transl Med 2015; 95:1409-17. [PMID: 26367490 DOI: 10.1038/labinvest.2015.115] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 07/03/2015] [Accepted: 07/28/2015] [Indexed: 12/28/2022] Open
Abstract
The dyslipidemia associated with type 2 diabetes mellitus (T2DM) is an important risk factor for atherosclerotic cardiovascular disease. However, until now little attention has been paid to the role that the intestine might have. The aim of this research was to determine the relation between insulin resistance and intestinal de novo lipogenesis/lipoprotein synthesis in morbidly obese subjects and to study the effect of insulin on these processes. Jejunal mRNA expression of the different genes involved in the intestinal de novo lipogenesis/lipoprotein synthesis was analyzed in three groups of morbidly obese subjects: Group 1 with low insulin resistance (MO-low-IR), group 2 with high insulin resistance (MO-high-IR), and group 3 with T2DM and treatment with metformin (MO-metf-T2DM). In addition, intestinal epithelial cells (IECs) from MO-low-IR were incubated with different doses of insulin/glucose. In Group 2 (MO-high-IR), the jejunal mRNA expression levels of apo A-IV, ATP-citrate lyase (ACLY), pyruvate dehydrogenase (lipoamide) beta (PDHB), and sterol regulatory element-binding protein-1c (SREBP-1c) were significantly higher and acetyl-CoA carboxylase alpha (ACC1) and fatty-acid synthase lower than in Group 1 (MO-low-IR). In Group 3 (MO-metf-T2DM), only the ACLY and PDHB mRNA expressions were significantly higher than in Group 1 (MO-low-IR). The mRNA expression of most of the genes studied was significantly linked to insulin and glucose levels. The incubation of IEC with different doses of insulin and glucose produced a higher expression of diacylglycerol acyltransferase 2, microsomal triglyceride transfer protein, apo A-IV, SREBP-1c, and ACC1 when both, glucose and insulin, were at a high concentration. However, with only high insulin levels, there were higher apo A-IV, PDHB and SREBP-1c expressions, and a lower ACLY expression. In conclusion, the jejunum of MO-high-IR has a decreased mRNA expression of genes involved in de novo fatty-acid synthesis and an increase of genes involved in acetyl-CoA and lipoprotein synthesis. This effect is attenuated by metformin. In addition, the expression of most of the genes studied was found to be regulated by insulin.
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Garcia-Serrano S, Gutiérrez-Repiso C, Gonzalo M, Garcia-Arnes J, Valdes S, Soriguer F, Perez-Valero V, Alaminos-Castillo MA, Francisco Cobos-Bravo J, Moreno-Ruiz FJ, Rodriguez-Cañete A, Rodríguez-Pacheco F, Garcia-Escobar E, García-Fuentes E. C-peptide modifies leptin and visfatin secretion in human adipose tissue. Obesity (Silver Spring) 2015; 23:1607-15. [PMID: 26146822 DOI: 10.1002/oby.21137] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 02/24/2015] [Accepted: 03/29/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The effects of C-peptide on adipose tissue, an organ involved in the development of obesity and insulin resistance, are not yet well known. The aim of this study was to determine whether C-peptide could be involved in the regulation of the adipocytokine synthesis in human visceral adipose tissue. METHODS The association between C-peptide and different serum adipocytokines, with an intravenous glucose tolerance test (IVGTT), and in an in vitro study in subjects without obesity and in subjects with morbid obesity were analyzed. RESULTS In different multiple regression analysis models, C-peptide and C-peptide increase above basal levels during total IVGTT and between 0 and 10 min were associated positively with leptin and negatively with visfatin. Rhodamine-labeled C-peptide binds to human adipocytes, and this binding was blocked with excess of unlabeled C-peptide. Exposure of human visceral explants and adipocytes from subjects with morbid obesity to C-peptide at 1 and 10 nM induced a significant increase in leptin and a decrease in visfatin secretion. In subjects without obesity, these C-peptide effects were found mainly at 10 nM. These effects can be inhibited by phosphatidylinositol 3-kinase (PI3K) or protein kinase B (PKB) inhibitors. CONCLUSIONS C-peptide may be involved in the regulation of leptin and visfatin secretion, molecules intimately involved in energy homeostasis processes, through PI3K or PKB pathways.
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Affiliation(s)
- Sara Garcia-Serrano
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER De Diabetes Y Enfermedades Metabólicas (CIBERDEM), Málaga, Spain
| | - Carolina Gutiérrez-Repiso
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Montserrat Gonzalo
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Juan Garcia-Arnes
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Sergio Valdes
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER De Diabetes Y Enfermedades Metabólicas (CIBERDEM), Málaga, Spain
| | - Federico Soriguer
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER De Diabetes Y Enfermedades Metabólicas (CIBERDEM), Málaga, Spain
- CIBER Fisiopatología De La Obesidad Y Nutrición (CIBEROBN), Málaga, Spain
| | - Vidal Perez-Valero
- Unidad De Gestión Clínica De Laboratorio, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Miguel A Alaminos-Castillo
- Unidad De Gestión Clínica De Laboratorio, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Juan Francisco Cobos-Bravo
- Unidad De Gestión Clínica De Cirugía General, Digestiva Y Trasplantes, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Francisco J Moreno-Ruiz
- Unidad De Gestión Clínica De Cirugía General, Digestiva Y Trasplantes, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Alberto Rodriguez-Cañete
- Unidad De Gestión Clínica De Cirugía General, Digestiva Y Trasplantes, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
| | - Francisca Rodríguez-Pacheco
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER De Diabetes Y Enfermedades Metabólicas (CIBERDEM), Málaga, Spain
| | - Eva Garcia-Escobar
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER De Diabetes Y Enfermedades Metabólicas (CIBERDEM), Málaga, Spain
| | - Eduardo García-Fuentes
- Unidad De Gestión Clínica De Endocrinología Y Nutrición, Instituto De Investigacion Biomédica De Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
- CIBER Fisiopatología De La Obesidad Y Nutrición (CIBEROBN), Málaga, Spain
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Effect of Roux-en-Y gastric bypass-induced weight loss on the transcriptomic profiling of subcutaneous adipose tissue. Surg Obes Relat Dis 2015; 12:257-63. [PMID: 26615868 DOI: 10.1016/j.soard.2015.07.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 07/03/2015] [Accepted: 07/07/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND The changes in the transcriptomic profiling of subcutaneous adipose tissue (SAT) when weight loss stabilizes after a Roux-en-Y gastric bypass (RYGB) are still largely unknown. OBJECTIVES To investigate the changes produced in SAT gene expression of morbidly obese women when their weight loss stabilizes 2 years after RYGB. SETTING University hospital. METHODS SAT biopsies of the periumbilical area were taken before and 2 years after RYGB. Gene expression levels were assessed by microarray analysis and significant differences in gene expression were validated by real-time quantitative polymerase chain reaction. The findings were also confirmed in an independent population of morbidly obese women. RESULTS Microarray analysis revealed that the overexpressed differentially expressed genes have a prominent role in the pathways involved in biosynthetic processes, especially lipid or carboxylic ones (stearoyl-Coenzyme A desaturase-1, fatty acid desaturase-1, fatty acid elongase-6, ATP citrate lyase, fatty acid synthase, lipin-1, monoacylglycerol O-acyltransferase, patatin-like phospholipase domain containing-3, phosphate cytidylyltransferase-2, cholesteryl ester transfer protein, transmembrane 7 superfamily member 2, pyruvate carboxylase, and glycogen synthase 2). Most of the underexpressed differentially expressed genes are related with immune system and inflammation processes (immune responses, response to stress, cell death, regulation of biological quality, immune effector process, the response to endogenous stimulus, and the response to other types of stimulus). CONCLUSION An improvement of the SAT inflammatory and immune profile and an induction of genes involved in the regulation of lipid metabolism are shown when weight loss stabilizes 2 years after RYGB. Most of the genes shown are clearly linked to obesity and other metabolic disorders.
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Lago-Sampedro AM, Gutiérrez-Repiso C, Valdés S, Maldonado C, Colomo N, Almaraz MC, Rubio-Martín E, Morcillo S, Esteva I, Ruiz de Adana MS, Perez-Valero V, Soriguer F, Rojo-Martínez G, García-Fuentes E. Changes in thyroid function with age: results from the Pizarra population-based longitudinal study. Int J Clin Pract 2015; 69:577-87. [PMID: 25604441 DOI: 10.1111/ijcp.12545] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/19/2014] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Results of studies examining the influence of age on thyroid function and TSH levels, in the absence of thyroid disease, remain controversial. The aim of this study was to determine the course of thyroid function over 11 years in a population with normal thyroid function. METHODS This is a population-based prospective study started in 1995-1997 (first phase), and reassessed 6 (second phase) and 11 years later (third phase). RESULTS The TSH and FT4 in the third phase were significantly increased (p=0.001 and p=0.001, respectively), with the values being higher particularly from the age of 50 years. In those persons with a baseline TSH≥1.2 and <3 μIU/mL, the OR of having a TSH of 3-5 μIU/mL in the third phase was 6.10 (p=0.004). In those with a baseline TSH≥3 and ≤5 μIU/mL, the OR of having a TSH of 3-5 μIU/mL in the third phase was 20.8 (p<0.0001). Similar results were found for FT4. CONCLUSION In a population free of clinical thyroid disease, TSH and FT4 values rise over the years. This increase occurs in all age groups, but depends mainly on the basal concentrations of TSH and FT4.
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Affiliation(s)
- A Ma Lago-Sampedro
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Instituto de Investigaciones Biomédicas de Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos IIII, Málaga, Spain
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Karbownik-Lewinska M, Stepniak J, Milczarek M, Lewinski A. Protective effect of KI in mtDNA in porcine thyroid: comparison with KIO₃ and nDNA. Eur J Nutr 2014; 54:319-23. [PMID: 25381633 PMCID: PMC4323512 DOI: 10.1007/s00394-014-0797-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/03/2014] [Indexed: 01/07/2023]
Abstract
Purpose Iodine, bivalent iron (Fe2+), and hydrogen peroxide (H2O2), all significantly affecting the red-ox balance, are required for thyroid hormone synthesis. Intracellular iodine excess (≥10−3 M) transiently blocks thyroid hormonogenesis (an adaptive mechanism called Wolff–Chaikoff effect). The aim of the study was to evaluate the effects of iodine, used as potassium iodide (KI) or potassium iodate (KIO3), in concentrations corresponding to those typical for Wolff–Chaikoff effect, on the level of oxidative damage to nuclear DNA (nDNA) and mitochondrial DNA (mtDNA) isolated from porcine thyroid under basal conditions and in the presence of Fenton reaction (Fe2++H2O2 → Fe3++·OH + OH−) substrates. Methods Thyroid nDNA and mtDNA were incubated in the presence of either KI or KIO3 (2.5–50 mM), without/with FeSO4 (30 µM) + H2O2 (0.5 mM). Index of DNA damage, i.e., 8-oxo-7,8-dihydro-2′-deoxyguanosine, was measured by HPLC. Results Neither KI nor KIO3 increased the basal level of 8-oxodG in both nDNA and mtDNA. KI—in all used concentrations—completely prevented the damaging effect of Fenton reaction substrates in mtDNA, and it partially prevented this damage in nDNA. KIO3 partially prevented Fe2++H2O2-induced oxidative damage in both DNA only in its highest used concentrations (≥25 mM). Conclusions Without additional prooxidative abuse, both iodine compounds, i.e., KI and KIO3, seem to be safe in terms of their potential oxidative damage to DNA in the thyroid. The superiority of KI over KIO3 relies on its stronger protective effects against oxidative damage to mtDNA, which constitutes an argument for its preferential utility in iodine prophylaxis.
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Gutierrez-Repiso C, Garcia-Serrano S, Rodriguez-Pacheco F, Garcia-Escobar E, Haro-Mora JJ, Garcia-Arnes J, Valdes S, Gonzalo M, Soriguer F, Moreno-Ruiz FJ, Rodriguez-Cañete A, Martinez-Ferriz A, Santoyo JS, Perez-Valero V, Garcia-Fuentes E. FNDC5 could be regulated by leptin in adipose tissue. Eur J Clin Invest 2014; 44:918-25. [PMID: 25112714 DOI: 10.1111/eci.12324] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 08/06/2014] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Irisin activates the thermogenic function in adipose tissues. However, little is known on the association between human irisin and different cardiometabolic risk factors. We analyse the influence of morbid obesity on irisin levels and its relation with leptin and different cardiovascular risk factors. MATERIAL AND METHODS We measured the serum irisin level and the fibronectin type III domain containing 5 (FNDC5) expression in adipose tissue from 33 morbidly obese subjects and 12 nonobese subjects. We also studied the effect of leptin on FNDC5 expression. RESULTS Serum irisin was higher in the nonobese subjects than in morbidly obese subjects, both before (P = 0·043) and after bariatric surgery (P = 0·042). The variable that best explained the serum irisin levels in a multiple linear regression model was the waist-to-hip ratio (WHR) (R(2) = 0·201) (Beta = -0·357, P = 0·046). Those morbidly obese subjects with android-type obesity had lower serum irisin levels than those with gynecoid-type obesity, both before (P = 0·027) and after bariatric surgery (P = 0·006). Only the percentage change in WHR was associated with serum irisin levels after bariatric surgery (r = -0·529, P = 0·005). FNDC5 expression levels in subcutaneous adipose tissue (SAT) were higher in the nonobese than in the morbidly obese subjects (P = 0·042). In SAT explants from nonobese subjects, leptin (20 and 150 ng/mL) produced a decrease in FNDC5 expression (P = 0·009 and P = 0·037, respectively). CONCLUSIONS We showed decreased serum irisin levels in morbidly obese subjects, related mainly to WHR. FNDC5 expression could be regulated by leptin.
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Affiliation(s)
- Carolina Gutierrez-Repiso
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Instituto de Investigaciones Biomédicas de Málaga (IBIMA), Hospital Regional Universitario, Málaga, Spain
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Rodriguez-Pacheco F, Garcia-Serrano S, Garcia-Escobar E, Gutierrez-Repiso C, Garcia-Arnes J, Valdes S, Gonzalo M, Soriguer F, Moreno-Ruiz FJ, Rodriguez-Cañete A, Gallego-Perales JL, Martinez-Ferriz A, Rojo-Martínez G, Garcia-Fuentes E. Effects of obesity/fatty acids on the expression of GPR120. Mol Nutr Food Res 2014; 58:1852-60. [DOI: 10.1002/mnfr.201300666] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 02/10/2014] [Accepted: 04/02/2014] [Indexed: 01/28/2023]
Affiliation(s)
- Francisca Rodriguez-Pacheco
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
| | - Sara Garcia-Serrano
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
| | - Eva Garcia-Escobar
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
| | - Carolina Gutierrez-Repiso
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Juan Garcia-Arnes
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Sergio Valdes
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
| | - Montserrat Gonzalo
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Federico Soriguer
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
- CIBEROBN; Instituto de Salud Carlos III; Malaga Spain
| | - Francisco J. Moreno-Ruiz
- Unidad de Gestion Clínica de Cirugía General; Digestiva y Trasplantes; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Alberto Rodriguez-Cañete
- Unidad de Gestion Clínica de Cirugía General; Digestiva y Trasplantes; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Jose L. Gallego-Perales
- Unidad de Gestion Clínica de Cirugía General; Digestiva y Trasplantes; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Abelardo Martinez-Ferriz
- Unidad de Gestion Clínica de Cirugía General; Digestiva y Trasplantes; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
| | - Gemma Rojo-Martínez
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
- CIBEROBN; Instituto de Salud Carlos III; Malaga Spain
| | - Eduardo Garcia-Fuentes
- Unidad de Gestion Clinica de Endocrinogía y Nutrición; Instituto de Investigaciones Biomédicas de Málaga (IBIMA); Hospital Regional Universitario; Malaga Spain
- CIBERDEM, Instituto de Salud Carlos III; Malaga Spain
- CIBEROBN; Instituto de Salud Carlos III; Malaga Spain
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