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Szulc A, Wiśniewska K, Żabińska M, Gaffke L, Szota M, Olendzka Z, Węgrzyn G, Pierzynowska K. Effectiveness of Flavonoid-Rich Diet in Alleviating Symptoms of Neurodegenerative Diseases. Foods 2024; 13:1931. [PMID: 38928874 PMCID: PMC11202533 DOI: 10.3390/foods13121931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/16/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Over the past decades, there has been a significant increase in the burden of neurological diseases, including neurodegenerative disorders, on a global scale. This is linked to a widespread demographic trend in which developed societies are aging, leading to an increased proportion of elderly individuals and, concurrently, an increase in the number of those afflicted, posing one of the main public health challenges for the coming decades. The complex pathomechanisms of neurodegenerative diseases and resulting varied symptoms, which differ depending on the disease, environment, and lifestyle of the patients, make searching for therapies for this group of disorders a formidable challenge. Currently, most neurodegenerative diseases are considered incurable. An important aspect in the fight against and prevention of neurodegenerative diseases may be broadly understood lifestyle choices, and more specifically, what we will focus on in this review, a diet. One proposal that may help in the fight against the spread of neurodegenerative diseases is a diet rich in flavonoids. Flavonoids are compounds widely found in products considered healthy, such as fruits, vegetables, and herbs. Many studies indicated not only the neuroprotective effects of these compounds but also their ability to reverse changes occurring during the progression of diseases such as Alzheimer's, Parkinson's and amyotrophic lateral sclerosis. Here, we present the main groups of flavonoids, discussing their characteristics and mechanisms of action. The most widely described mechanisms point to neuroprotective functions due to strong antioxidant and anti-inflammatory effects, accompanied with their ability to penetrate the blood-brain barrier, as well as the ability to inhibit the formation of protein aggregates. The latter feature, together with promoting removal of the aggregates is especially important in neurodegenerative diseases. We discuss a therapeutic potential of selected flavonoids in the fight against neurodegenerative diseases, based on in vitro studies, and their impact when included in the diet of animals (laboratory research) and humans (population studies). Thus, this review summarizes flavonoids' actions and impacts on neurodegenerative diseases. Therapeutic use of these compounds in the future is potentially possible but depends on overcoming key challenges such as low bioavailability, determining the therapeutic dose, and defining what a flavonoid-rich diet is and determining its potential negative effects. This review also suggests further research directions to address these challenges.
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Affiliation(s)
| | | | | | | | | | | | - Grzegorz Węgrzyn
- Department of Molecular Biology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland; (A.S.); (K.W.); (M.Ż.); (L.G.); (M.S.); (Z.O.); (K.P.)
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Gatta E, Maltese V, Cavadini M, Anelli V, Bambini F, Buoso C, Facondo P, Pirola I, Delbarba A, Cappelli C. Interference or Noninterference Between Soy and Levothyroxine: That Is the Question. A Narrative Review of Literature. Endocr Pract 2023; 29:897-901. [PMID: 37633413 DOI: 10.1016/j.eprac.2023.08.009] [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] [Received: 06/14/2023] [Revised: 08/17/2023] [Accepted: 08/21/2023] [Indexed: 08/28/2023]
Abstract
OBJECTIVE To evaluate the effect of soy intake on levothyroxine (L-T4) absorption among different L-T4 formulations. METHODS A PubMed/MEDLINE, Web of Science, and Scopus research was performed. Case reports, case series, and original studies written in English and published online up to November 30, 2022, were selected and reviewed. The final reference list was defined based on the relevance of each study to the scope of this review. RESULTS Few data, mainly case reports, seemed to suggest a possible interference of soy products on L-T4 tablets absorption. However, the only prospective randomized cross-over study showed no differences in L-T4 absorption when L-T4 and soy isoflavones were assumed concomitantly. The very little data available on liquid L-T4 formulations did not allow for any conclusions to be made, even if a double-blind placebo-controlled trial showed no impaired L-T4 absorption. CONCLUSION The inference of soy products on L-T4 absorption, if present, seems to have little clinical impact. Considering this fact, the Hamlet-like question whether soy milk interferes with L-T4 absorption remains unanswered.
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Affiliation(s)
- Elisa Gatta
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Virginia Maltese
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Maria Cavadini
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Valentina Anelli
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Francesca Bambini
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Caterina Buoso
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Paolo Facondo
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Ilenia Pirola
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Andrea Delbarba
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy
| | - Carlo Cappelli
- Department of Clinical and Experimental Sciences, SSVD Endocrinologia, University of Brescia, Azienda Socio-Sanitaria Territoriale (ASST) Spedali Civili di Brescia, Brescia, Italy.
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Bailón-Uriza R, Ayala-Méndez JA, Celis-González C, Chávez-Brambila J, Hernández Marín I, Maldonado-Alvarado JDD, Montoya-Cossío J, Molina-Segui F, May-Hau A, Riobó Serván P, Neri-Ruz E, Peralta-Sánchez A, Reyes E, Rosado-López R, Santa Rita-Escamilla MT, Tena Alavez G, Laviada Molina H. [Soy beverages and women's health: evidence review and experts opinion]. NUTR HOSP 2023; 40:1056-1067. [PMID: 37154022 DOI: 10.20960/nh.04372] [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] [Indexed: 05/10/2023] Open
Abstract
Introduction Soy drinks are an increasingly consumed option within the Western diet. However, there are concerns about potential endocrine disruptor effects and possible impact on women's reproductive health. This review evaluates scientific documents in gynecology and obstetrics under an evidence-based medicine approach. All methods adhered to PRISMA 2020 declaration guidelines. The evaluated studies do not support a positive association between soy intake and early puberty or breast cancer; instead, a protective effect against such neoplasm was observed. Transplacental passage of soy isoflavones and their presence in breast milk has been reported without any maternal-fetal complications nor congenital malformations. Exposure to soy-derived products appears to have a neutral effect on body weight and bone health. Studies performed in adults indicate that soy may promote a minimal increase in thyrotropin (TSH) in subjects with subclinical hypothyroidism. The impact of soy-based foods on gut microbiota appears favorable, especially when consuming fermented products. Many of the human studies have been conducted with isoflavones supplements, isolated or textured soy proteins. Therefore, the results and conclusions should be interpreted cautiously, as these are not entirely applicable to commercial soy beverages.
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Affiliation(s)
| | | | | | - Jesús Chávez-Brambila
- Hospital de Ginecología y Obstetricia "Luis Castelazo Ayala". Instituto Mexicano del Seguro Social
| | | | | | | | | | - Abraham May-Hau
- Escuela de Ciencias de la Salud. Universidad Marista de Mérida
| | | | | | | | - Eduardo Reyes
- Departamento de Atención a la Salud. Universidad Autónoma Metropolitana Unidad Xochimilco
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Duda-Chodak A, Tarko T. Possible Side Effects of Polyphenols and Their Interactions with Medicines. Molecules 2023; 28:molecules28062536. [PMID: 36985507 PMCID: PMC10058246 DOI: 10.3390/molecules28062536] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/14/2023] Open
Abstract
Polyphenols are an important component of plant-derived food with a wide spectrum of beneficial effects on human health. For many years, they have aroused great interest, especially due to their antioxidant properties, which are used in the prevention and treatment of many diseases. Unfortunately, as with any chemical substance, depending on the conditions, dose, and interactions with the environment, it is possible for polyphenols to also exert harmful effects. This review presents a comprehensive current state of the knowledge on the negative impact of polyphenols on human health, describing the possible side effects of polyphenol intake, especially in the form of supplements. The review begins with a brief overview of the physiological role of polyphenols and their potential use in disease prevention, followed by the harmful effects of polyphenols which are exerted in particular situations. The individual chapters discuss the consequences of polyphenols’ ability to block iron uptake, which in some subpopulations can be harmful, as well as the possible inhibition of digestive enzymes, inhibition of intestinal microbiota, interactions of polyphenolic compounds with drugs, and impact on hormonal balance. Finally, the prooxidative activity of polyphenols as well as their mutagenic, carcinogenic, and genotoxic effects are presented. According to the authors, there is a need to raise public awareness about the possible side effects of polyphenols supplementation, especially in the case of vulnerable subpopulations.
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Huang CJ, Lee LH, Cheng CP, Yao SF, Chen HS, Hwu CM, Tang KT, Wang FF, Shih CW, Yang CC, Huang WS. Measurements of elemental iodine in soy sauces in Taiwan using a modified microplate method. Front Endocrinol (Lausanne) 2023; 14:1058695. [PMID: 37008932 PMCID: PMC10054453 DOI: 10.3389/fendo.2023.1058695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/28/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Soy sauce is widely used in a variety of Asian dishes to enhance flavor. Soybean and most soybean products, including soy sauces, are listed as prohibited foods in a low iodine diet. However, the iodine content in soy sauces is largely unknown. The aim of this study was to determine the iodine content in domestic soy sauces in Taiwan. METHODS Twenty-five different kinds of soy sauces were diluted with distilled water and with a dilution factor of fifty or above. Iodine concentrations of the diluted samples were measured colourimetrically based on the Sandell-Kolthoff reaction by a modified microplate method. All the measurements were repeated twelve times on three different days for determination of mean and standard deviation (SD), and coefficients of variance (CV). Serial dilution and recovery tests were also performed for validation. The results were confirmed by an inductively coupled plasma mass spectrometry (ICP-MS) method. RESULTS Among the twenty-five surveyed soy sauces, most of them (n=22) were iodine-free (<16 ug/L, and thus un-detectable). The iodine concentrations (mean ± SD) of the three iodine-containing soy sauces were 2.7 ± 0.1, 5.1 ± 0.2, and 10.8 ± 0.6 mg/L, respectively. The inter-assay, intra-assay and total CVs were all <5.3% for the modified microplate method. The results obtained by ICP-MS were consistent with those of the modified microplate method. The recovery rates in the serial dilution test and recovery test ranged from 94.7% to 118.6%. Two of the three iodine-containing soy sauces were supplemented with kelp extract, while the other one without kelp extract had the highest amount of salt among the three iodine-containing soy sauces. Therefore, we postulate that iodized salt instead of kelp extract is the source of higher iodine content in that sauce. CONCLUSION The results suggest that most soy sauces are iodine-free and may be allowed during low iodine diets.
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Affiliation(s)
- Chun-Jui Huang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
- Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
| | - Lin-Hsuan Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Institute of Food Safety and Health Risk Assessment, School of Pharmaceutical Science, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
| | - Cheng-Pin Cheng
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
| | - Shan-Fan Yao
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Harn-Shen Chen
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
| | - Chii-Min Hwu
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
| | - Kam-Tsun Tang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
| | - Fan-Fen Wang
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
- Department of Medicine, Yangming Branch, Taipei City Hospital, Taipei, Taiwan
| | - Chiao-Wei Shih
- Division of Endocrinology and Metabolism, Department of Medicine, Taipei Veterans General Hospital (TVGH), Taipei, Taiwan
| | - Chen-Chang Yang
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
- Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
- Institute of Environmental & Occupational Health Sciences, School of Medicine, National Yang Ming Chiao Tung University (NYCU), Taipei, Taiwan
- Department of Occupational Medicine and Clinical Toxicology, Taipei Veterans General Hospital, Taipei, Taiwan
- *Correspondence: Wen-Sheng Huang, ; Chen-Chang Yang,
| | - Wen-Sheng Huang
- Department of Nuclear Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Nuclear Medicine, Cheng-Hsin General Hospital, Taipei, Taiwan
- *Correspondence: Wen-Sheng Huang, ; Chen-Chang Yang,
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Abstract
BACKGROUND Increasingly, patients are asking their physicians about the benefits of dietary and alternative approaches to manage their diseases, including thyroid disease. We seek to review the evidence behind several of the vitamins, minerals, complementary medicines, and elimination diets that patients are most commonly using for the treatment of thyroid disorders. SUMMARY Several trace elements are essential to normal thyroid function, and their supplementation has been studied in various capacities. Iodine supplementation has been implemented on national scales through universal salt iodization with great success in preventing severe thyroid disease, but can conversely cause thyroid disorders when given in excess. Selenium and zinc supplementation has been found to be beneficial in specific populations with otherwise limited generalizability. Other minerals, such as vitamin B12, low-dose naltrexone, and ashwagandha root extract, have little to no evidence of any impact on thyroid disorders. Avoidance of gluten and dairy has positive impacts only in patients with concomitant sensitivities to those substances, likely by improving absorption of levothyroxine. Avoidance of cruciferous vegetables and soy has little proven benefit in patients with thyroid disorders. CONCLUSION While many patients are seeking to avoid conventional therapy and instead turn to alternative and dietary approaches to thyroid disease management, many of the most popular approaches have no proven benefit or have not been well studied. It is our responsibility to educate our patients about the evidence for or against benefit, potential harms, or dearth of knowledge behind these strategies.
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Affiliation(s)
- Dana Larsen
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Sargun Singh
- Government Medical College Amritsar, Amritsar, Punjab, India
| | - Maria Brito
- Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA
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Bellastella G, Scappaticcio L, Caiazzo F, Tomasuolo M, Carotenuto R, Caputo M, Arena S, Caruso P, Maiorino MI, Esposito K. Mediterranean Diet and Thyroid: An Interesting Alliance. Nutrients 2022; 14:nu14194130. [PMID: 36235782 PMCID: PMC9571437 DOI: 10.3390/nu14194130] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/30/2022] Open
Abstract
The Mediterranean diet, recognized as being cultural heritage by UNESCO, is mostly plant-based and includes a high consumption of whole-grain, fruit, and vegetables with a moderate consumption of alcohol during meals. Thus, it provides a small amount of saturated fatty acids and a high quantity of antioxidants and fiber. For this reason, it has been considered to have an important role in preventing cardiovascular diseases, chronic kidney diseases, type 2 diabetes mellitus, and cancer, but its relationship with thyroid function and diseases is still under debate. The aim of this review was to search for the possible correlation between the Mediterranean diet and thyroid function, and to critically evaluate the pathophysiological link between selected food intake and thyroid disorders.
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Affiliation(s)
- Giuseppe Bellastella
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Correspondence: ; Tel.: +39-0815665289
| | - Lorenzo Scappaticcio
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Francesco Caiazzo
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Maria Tomasuolo
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Raffaela Carotenuto
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Mariangela Caputo
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Stefania Arena
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Paola Caruso
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Maria Ida Maiorino
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Katherine Esposito
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Unit of Endocrinology and Metabolic Diseases, University Hospital, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
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Wu Z, Liu L. The protective activity of genistein against bone and cartilage diseases. Front Pharmacol 2022; 13:1016981. [PMID: 36160403 PMCID: PMC9492956 DOI: 10.3389/fphar.2022.1016981] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 08/25/2022] [Indexed: 11/13/2022] Open
Abstract
Genistein, a natural isoflavone rich in soybean and leguminous plants, has been shown various biological effects, such as anti-inflammation, anti-oxidation, anti-cancer, and bone/cartilage protection. Due to the structural similarity to estrogen, genistein exhibits estrogen-like activity in protecting against osteoporosis and osteoarthritis. Furthermore, genistein has been considered as an inhibitor of tyrosine kinase, which has been found to be dysregulated in the pathological development of osteoporosis, osteoarthritis, and intervertebral disc degeneration (IDD). Many signaling pathways, such as MAPK, NF-κB, and NRF2/HO-1, are involved in the regulatory activity of genistein in protecting against bone and cartilage diseases. The potential molecular mechanisms of genistein in therapeutic management of bone and cartilage diseases have been investigated, but remain to be fully understood. In this article, we mainly discuss the current knowledge of genistein in protecting against bone and cartilage diseases, such as osteoporosis, osteoarthritis, rheumatoid arthritis (RA), and IDD.
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Affiliation(s)
- Zhenyu Wu
- First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
- *Correspondence: Zhenyu Wu,
| | - Luying Liu
- First Clinical Medical College of Gannan Medical University, Ganzhou, China
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Hess JM. Modeling Dairy-Free Vegetarian and Vegan USDA Food Patterns for Nonpregnant, Nonlactating Adults. J Nutr 2022; 152:2097-2108. [PMID: 35485767 DOI: 10.1093/jn/nxac100] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/16/2022] [Accepted: 04/26/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The 2020-2025 Dietary Guidelines for Americans (2020 DGA) recommend 3 dietary patterns for Americans, including a Healthy Vegetarian Dietary Pattern (HVDP). OBJECTIVES The objective of this study was to assess whether nutritionally adequate dairy-free and vegan adaptations to the HVDP can be modeled with foods already in the DGA. METHODS Using similar food pattern modeling procedures as the 2020 DGA, the nutrient composition of 2 alternative models-dairy-free and vegan-of the 1800-, 2000-, 2200-, and 2400-kcal/d HVDPs was assessed. The dairy food group was replaced with a dairy alternative group comprised of soy milk and soy yogurt fortified with calcium, vitamin A, and vitamin D. For the vegan model, eggs were replaced with equal proportions of vegetarian protein foods. RESULTS Dairy-free and vegan models required minimal changes to the HVDP. Cup-equivalents and/or ounce-equivalents of vegetables, fruits, grains, oils, and discretionary calories remained unchanged. Content of total fat, polyunsaturated fat, linoleic acid (18:2n-6), linolenic acid, iron, copper, vitamin D, riboflavin, vitamin B-12, and vitamin K increased in both models by ≥10% (all comparisons relative to the original HVDP). Choline increased ≥25% in the dairy-free models. Protein decreased 11% in both 1800-kcal/d models and 10% in both 2000-kcal/d models. Sodium, cholesterol, zinc, and phosphorus decreased across all energy levels in both models, and selenium decreased in the vegan model. Carbohydrate, fiber, saturated fat, EPA, DHA, calcium, magnesium, potassium, vitamin A, vitamin E, vitamin C, thiamin, folate, and vitamin B-6 changed ≤10%. Both models contained adequate nutrients to meet Dietary Reference Intakes (DRIs) for most age and sex groups for which 1800-, 2000-, 2200-, and 2400-kcal/d diets are appropriate. Zinc was the only nutrient below the DRI for males. CONCLUSIONS The dairy-free and vegan HVDP models could help adults who do not consume dairy foods and/or other animal products to meet nutrition recommendations.
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Affiliation(s)
- Julie M Hess
- USDA-ARS Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA
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Yang W, Deng J, Gao J, Yang H, Chen Q, Niya Z, Ling X, Zhang G, Zou P, Sun L, Huang L, Liu J, Cao J, Ao L. Associations between isoflavone exposure and reproductive damage in adult males: evidence from human and model system studies. Biol Reprod 2022; 107:1360-1373. [PMID: 35948002 DOI: 10.1093/biolre/ioac157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/21/2022] [Accepted: 08/08/2022] [Indexed: 11/14/2022] Open
Abstract
It's controversial whether exposure to isoflavones, constituents of certain plants such as soy bean, exerts male reproductive toxicity. This study was designed to investigate whether isoflavone exposure during adulthood could have deleterious impacts on male reproductive health by the cross-sectional study, animal experiments, and in vitro tests. In the cross-sectional study, we observed that urinary isoflavones were not significantly associated with semen quality including sperm concentrations, sperm count, progressive motility, and total motility, respectively (All P-value for trend>0.05). However, negative associations were found between plasma testosterone and urinary Σisoflavones, genistein, glycitein, and dihydrodaidzein (all P-value for trend <0.05). In the animal experiments, serum and intratesticular testosterone levels were decreased in mice exposed to several dosages of genistein. Genistein administration caused up-regulation of estrogen receptor alpha (ERα) and down-regulation of cytochrome P45017A1 (CYP17A1) protein levels in testes of mice. However, genistein treatment during adulthood did not induce appreciable structural damages of reproductive system in mice. In vitro tests, we observed that genistein of different dosages (0.01, 2.5, 10 μM) caused a concentration dependent inhibition of testosterone production by TM3 Leydig cells (half-maximal inhibitory concentration = 3.796 nM, P < 0.05). Elevated protein expression of ERα and decreased mRNA/protein level of CYP17A1 were also observed in genistein-treated cells. Protein level of CYP17A1 and testosterone concentration were significantly restored in the ERα siRNA-transfected cells, compared to cells that treated with genistein alone (P < 0.05). The results demonstrate that exposure to isoflavones during adulthood may be associated with alterations of reproductive hormones. Particularly for genistein, which inhibits testosterone biosynthesis through up-regulation of ERα in Leydig cells of mice, might induce the disruption of testosterone production in human. The present study provides novel perspective into potential targets for male reproductive compromise induced by isoflavone exposure.
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Affiliation(s)
- Wang Yang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Jiuyang Deng
- Department of Occupational Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan 030001, China
| | - Jianfang Gao
- Tongren Hospital, Shanghai Jiao Tong University School of Medicine, 1111 Xianxia Road, Shanghai 200336, China
| | - Huan Yang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Qing Chen
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Zhou Niya
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Xi Ling
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Guowei Zhang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Peng Zou
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Lei Sun
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Linping Huang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Jinyi Liu
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Jia Cao
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
| | - Lin Ao
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Gaotanyan St 30, Chongqing 400038, China
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11
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Jafari A, Esmaeilzadeh Z, Khezri MR, Ghasemnejad-Berenji H, Pashapour S, Sadeghpour S, Ghasemnejad-Berenji M. An overview of possible pivotal mechanisms of Genistein as a potential phytochemical against SARS-CoV-2 infection: A hypothesis. J Food Biochem 2022; 46:e14345. [PMID: 35866873 PMCID: PMC9350103 DOI: 10.1111/jfbc.14345] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/02/2022] [Accepted: 07/05/2022] [Indexed: 11/28/2022]
Abstract
The Coronavirus Disease 2019 (COVID‐19) pandemic has been caused by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2). It is a global problem that humanity has not yet found a definitive solution for it. In this regard, a global effort has been done to find effective or potential adjuvant therapies in order to fight this infection. Genistein is a small, biologically active phytoestrogen flavonoid that is found in high amounts in soy and plants of the Fabaceae family. This important compound is known due to its anti‐cancer, anti‐inflammatory, and antioxidant effects. Additionally, protective effects of genistein have been reported in different pathological conditions through modulating intracellular pathways such as PI3K, Akt, mTOR, NF‐κB, PPARγ, AMPK, and Nrf2. Scientific evidence suggests that genistein could have a potential role to treat COVID‐19 through its anti‐inflammatory and anti‐oxidant effects. Furthermore, it appears to interfere with intracellular pathways involved in viral entry into the cell. This review provides a basis for further research and development of clinical applications of genistein as a potential alternative therapy to decrease inflammation and oxidative stress in COVID‐19 patients.
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Affiliation(s)
- Abbas Jafari
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Zeinab Esmaeilzadeh
- Department of Nutrition, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | | | | | - Sarvin Pashapour
- Department of Pediatrics, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Sonia Sadeghpour
- Department of Obstetrics & Gynecology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Morteza Ghasemnejad-Berenji
- Experimental and Applied Pharmaceutical Research Center, Urmia University of Medical Sciences, Urmia, Iran.,Department of Pharmacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran
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12
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Moiseeva EO, Kosov AD, Borisova NE, Tarasevich BN, Dubinina TV, Tomilova LG. Tetraiodophthalocyanines: Simple and convenient synthetic protocol and structural modification via Sonogashira cross-coupling reaction. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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13
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Garbiec E, Cielecka-Piontek J, Kowalówka M, Hołubiec M, Zalewski P. Genistein-Opportunities Related to an Interesting Molecule of Natural Origin. Molecules 2022; 27:815. [PMID: 35164079 PMCID: PMC8840253 DOI: 10.3390/molecules27030815] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 12/19/2022] Open
Abstract
Nowadays, increasingly more attention is being paid to a holistic approach to health, in which diet contributes to disease prevention. There is growing interest in functional food that not only provides basic nutrition but has also been demonstrated to be an opportunity for the prevention of disorders. A promising functional food is soybean, which is the richest source of the isoflavone, genistein. Genistein may be useful in the prevention and treatment of such disorders as psoriasis, cataracts, cystic fibrosis, non-alcoholic fatty liver disease and type 2 diabetes. However, achievable concentrations of genistein in humans are low, and the use of soybean as a functional food is not devoid of concerns, which are related to genistein's potential side effects resulting from its estrogenic and goitrogenic effects.
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Affiliation(s)
- Ewa Garbiec
- Department of Pharmacognosy, Faculty of Pharmacy, Poznan University of Medical Sciences, 4 Święcickiego St., 60-780 Poznan, Poland; (E.G.); (P.Z.)
| | - Judyta Cielecka-Piontek
- Department of Pharmacognosy, Faculty of Pharmacy, Poznan University of Medical Sciences, 4 Święcickiego St., 60-780 Poznan, Poland; (E.G.); (P.Z.)
| | - Magdalena Kowalówka
- Department of Bromatology, Faculty of Pharmacy, Poznan University of Medical Sciences, 42 Marcelińska St., 60-354 Poznan, Poland;
| | - Magdalena Hołubiec
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Szpitalna 27/33 St., 60-572 Poznan, Poland;
| | - Przemysław Zalewski
- Department of Pharmacognosy, Faculty of Pharmacy, Poznan University of Medical Sciences, 4 Święcickiego St., 60-780 Poznan, Poland; (E.G.); (P.Z.)
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14
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Stagi S, Municchi G, Ferrari M, Wasniewska MG. An Overview on Different L-Thyroxine (l-T 4) Formulations and Factors Potentially Influencing the Treatment of Congenital Hypothyroidism During the First 3 Years of Life. Front Endocrinol (Lausanne) 2022; 13:859487. [PMID: 35757415 PMCID: PMC9218053 DOI: 10.3389/fendo.2022.859487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/29/2022] [Indexed: 11/29/2022] Open
Abstract
Congenital hypothyroidism (CH) is a relatively frequent congenital endocrine disorder, caused by defective production of thyroid hormones (THs) at birth. Because THs are essential for the development of normal neuronal networks, CH is also a common preventable cause of irreversible intellectual disability (ID) in children. Prolonged hypothyroidism, particularly during the THs-dependent processes of brain development in the first years of life, due to delays in diagnosis, inadequate timing and dosing of levothyroxine (l-thyroxine or l-T4), the non-compliance of families, incorrect follow-up and the interference of foods, drugs and medications affecting the absorption of l-T4, may be responsible for more severe ID. In this review we evaluate the main factors influencing levels of THs and the absorption of l-T4 in order to provide a practical guide, based on the existing literature, to allow optimal follow-up for these patients.
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Affiliation(s)
- Stefano Stagi
- Department of Health Sciences, University of Florence, Anna Meyer Children’s University Hospital, Florence, Italy
- *Correspondence: Stefano Stagi,
| | - Giovanna Municchi
- Department of Health Sciences, University of Florence, Anna Meyer Children’s University Hospital, Florence, Italy
| | - Marta Ferrari
- Department of Health Sciences, University of Florence, Anna Meyer Children’s University Hospital, Florence, Italy
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15
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Fan Y, Qian H, Wu Z, Li Z, Li X, Zhang Y, Xu Q, Lu C, Wang X. Exploratory analysis of the associations between urinary phytoestrogens and thyroid hormones among adolescents and adults in the United States: National Health and Nutrition Examination Survey 2007-2010. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:2974-2984. [PMID: 34383217 DOI: 10.1007/s11356-021-14553-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
Phytoestrogens are naturally plant-derived compounds that could bind to estrogen receptors and mimic estrogenic effects. Previous studies showed a positive association between phytoestrogens and hypothyroidism; however, little is known on phytoestrogens and thyroid hormones. This study was designed to investigate the associations between urinary phytoestrogens and thyroid hormone levels. Based on the US National Health and Nutrition Examination Survey (NHANES) 2007-2010, 4103 participants were recruited in this cross-sectional study. Linear regression models and multiple linear regressions models were applied to examine the relationships between urinary phytoestrogens and thyroid hormone levels. Urinary O-desmethylangolensin (O-DMA) was found to be correlated with serum FT4 levels in the female 20-60-year-of-age group (β=0.018, 95% CI: 0.006, 0.031). Higher enterolactone (ENT) levels were significantly positively associated with TSH levels in the 12-19-year-of-age female group (β=0.196, 95% CI: 0.081, 0.311). In the male group, enterodiol (END) was significantly positively correlated with TSH and TT3 in the 12-19-year-of-age group, respectively (TT3: β=3.444, 95% CI: 0.150, 6.737; TSH: β=0.104, 95% CI: 0.005, 0.203). However, equol (EQU) levels were negatively associated with TT4 (12-19-year-of-age: β=- 0.166, 95% CI: - 0.279, - 0.034; 20-60-year-of-age: β=- 0.132, 95% CI: - 0.230, - 0.034). Our study provided epidemiological evidence that urinary phytoestrogens were powerfully associated with thyroid hormone levels. The results also supported that phytoestrogens acted as endocrine disruptors. It is imperative and important to pay attention to the intake of phytoestrogens.
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Affiliation(s)
- Yun Fan
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Hong Qian
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Zhuo Wu
- Department of Cardiology, First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Zhi Li
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Xiuzhu Li
- Nanjing Medical University Affiliated Wuxi Center for Disease Control and Prevention, Wuxi, 214023, China
| | - Yan Zhang
- Kangda College of Nanjing Medical University, Lianyungang, 222002, China
| | - Qiaoqiao Xu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Xinru Wang
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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16
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Đuričić I, Todorović V, Dabetić N, Zrnić-Cirić M, Ivanović N, Vidović B. Dietary factors and thyroid dysfunction. ARHIV ZA FARMACIJU 2022. [DOI: 10.5937/arhfarm72-39624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Besides iodine deficiency, autoimmune Hashimoto thyroiditis is the leading cause of hypothyroidism globally, characterized by the increased titer of thyroid autoantibodies and destruction of thyroid cells. Graves' disease is the most common etiology of hyperthyroidism worldwide. Patients with thyroid dysfunction often require dietary modifications. Popular interventions include supplementation with certain vitamins and minerals, as well as trace elements such as iodine and selenium. The intake of food containing goitrogens should be limited. Goitrogens are substances of plant origin that interfere with the production of thyroid hormones, increasing the risk for goiter and hypothyroidism. The primary dietary sources of goitrogens are cruciferous vegetables, soy products, starchy plants, and some fruits. Beyond essential nutrients, there has been an increasing interest in using specific nutraceuticals, including myoinositol, Lcarnitine, melatonin, and resveratrol, as potential preventive and therapeutic agents in thyroid diseases. Even though current evidence promotes some beneficial outcomes of these nutraceuticals, further investigations are needed to clarify dose-dependent effects, duration of supplementation, combination in different clinical settings, and the exact mechanism of their action in thyroid disorders.
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17
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Caprio AM, Umano GR, Luongo C, Aiello F, Dello Iacono I, Palumbo S, Miraglia del Giudice E, Grandone A. Case report: Goiter and overt hypothyroidism in an iodine-deficient toddler on soy milk and hypoallergenic diet. Front Endocrinol (Lausanne) 2022; 13:927726. [PMID: 36034464 PMCID: PMC9402931 DOI: 10.3389/fendo.2022.927726] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Soy-based infant formulas (SFs) are often consumed by cow's milk allergic children. However, some concerns have risen since soy intake may adversely affect thyroid function in iodine-deficient or subclinical hypothyroid individuals. We report the first Italian case of SF induced goiter and hypothyroidism registered in our country since National Iodine program has been instituted. Finally, we review cases previously reported in literature. A 22-month-old toddler with a previous diagnosis of cow's milk protein allergy came to clinical attention for important goiter and overt hypothyroidism. Detailed dietary anamnesis revealed that he was on a restrictive dietary regimen based on soymilk since 12 months of age. A temporary levothyroxine substitution was instituted to avoid hypothyroidism complications. Adequate iodine supplementation and diet diversification completely reversed SF-induced hypothyroidism and goiter, confirming the diagnostic suspicion of soymilk-induced thyroid dysfunction in a iodine-deficient toddler. This case report demonstrates the importance of careful dietary habits investigation and adequate micronutrients supplementation in children on a restrictive diet due to multiple food allergies in order to prevent nutritional deficits.
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Affiliation(s)
- Angela Maria Caprio
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Giuseppina Rosaria Umano
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Caterina Luongo
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Francesca Aiello
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
- *Correspondence: Francesca Aiello,
| | - Iride Dello Iacono
- Unit of Allergology. Division of Internal Medicine, Fatebenefratelli Hospital, Benevento, Italy
| | - Stefania Palumbo
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Emanuele Miraglia del Giudice
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Anna Grandone
- Department of the Woman, The Child, of General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
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18
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Kaur N, Agarwal A, Sabharwal M, Jaiswal N. Natural Food Toxins as Anti‐Nutritional Factors in Plants and Their Reduction Strategies. Food Chem 2021. [DOI: 10.1002/9781119792130.ch8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Craig WJ, Mangels AR, Fresán U, Marsh K, Miles FL, Saunders AV, Haddad EH, Heskey CE, Johnston P, Larson-Meyer E, Orlich M. The Safe and Effective Use of Plant-Based Diets with Guidelines for Health Professionals. Nutrients 2021; 13:4144. [PMID: 34836399 PMCID: PMC8623061 DOI: 10.3390/nu13114144] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 12/13/2022] Open
Abstract
Plant-based diets, defined here as including both vegan and lacto-ovo-vegetarian diets, are growing in popularity throughout the Western world for various reasons, including concerns for human health and the health of the planet. Plant-based diets are more environmentally sustainable than meat-based diets and have a reduced environmental impact, including producing lower levels of greenhouse gas emissions. Dietary guidelines are normally formulated to enhance the health of society, reduce the risk of chronic diseases, and prevent nutritional deficiencies. We reviewed the scientific data on plant-based diets to summarize their preventative and therapeutic role in cardiovascular disease, cancer, diabetes, obesity, and osteoporosis. Consuming plant-based diets is safe and effective for all stages of the life cycle, from pregnancy and lactation, to childhood, to old age. Plant-based diets, which are high in fiber and polyphenolics, are also associated with a diverse gut microbiota, producing metabolites that have anti-inflammatory functions that may help manage disease processes. Concerns about the adequate intake of a number of nutrients, including vitamin B12, calcium, vitamin D, iron, zinc, and omega-3 fats, are discussed. The use of fortified foods and/or supplements as well as appropriate food choices are outlined for each nutrient. Finally, guidelines are suggested for health professionals working with clients consuming plant-based diets.
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Affiliation(s)
- Winston J. Craig
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 92354, USA; (F.L.M.); (E.H.H.); (C.E.H.); (P.J.)
| | | | - Ujué Fresán
- eHealth Group, Instituto de Salud Global Barcelona (ISGlobal), 08036 Barcelona, Spain;
| | - Kate Marsh
- Private Practice, Chatswood, NSW 2067, Australia;
| | - Fayth L. Miles
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 92354, USA; (F.L.M.); (E.H.H.); (C.E.H.); (P.J.)
- School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA;
| | - Angela V. Saunders
- Nutrition Insights, Sanitarium Health Food Company, Berkeley Vale, NSW 2261, Australia;
| | - Ella H. Haddad
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 92354, USA; (F.L.M.); (E.H.H.); (C.E.H.); (P.J.)
| | - Celine E. Heskey
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 92354, USA; (F.L.M.); (E.H.H.); (C.E.H.); (P.J.)
| | - Patricia Johnston
- Center for Nutrition, Healthy Lifestyles, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 92354, USA; (F.L.M.); (E.H.H.); (C.E.H.); (P.J.)
| | - Enette Larson-Meyer
- Human Nutrition, Foods, and Exercise Virginia Tech, Blacksburg, VA 24061, USA;
| | - Michael Orlich
- School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA;
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20
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Lephart ED. Phytoestrogens (Resveratrol and Equol) for Estrogen-Deficient Skin-Controversies/Misinformation versus Anti-Aging In Vitro and Clinical Evidence via Nutraceutical-Cosmetics. Int J Mol Sci 2021; 22:11218. [PMID: 34681876 PMCID: PMC8538984 DOI: 10.3390/ijms222011218] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/10/2021] [Accepted: 10/14/2021] [Indexed: 12/17/2022] Open
Abstract
The overarching theme for this review is perspective. Superfoods (a marketing term for fruits and vegetables, etc.) have a positive connotation, while many superfoods contain phytoestrogens, a term that is alarming to the public and has a negative connotation because phytoestrogens are endocrine-disruptors, even though they are strong antioxidants that have many health benefits. To understand phytoestrogens, this paper provides a brief summary of the characteristics of: (a) estrogens, (b) estrogen receptors (ER), (c) estrogen-deficient skin, (d) how perspective(s) get off track, (e) phytoestrogen food sources, and (f) misconceptions of phytoestrogens and food safety, in general, that influence person(s) away from what is true. Finally, a brief history of cosmetics to nutraceuticals is covered plus the characteristics of phytoestrogens, resveratrol and equol on: (g) estrogen receptor binding, (h) topical and oral dosing, and (i) in vitro, molecular mechanisms and select clinical evidence, where both phytoestrogens (resveratrol and equol) demonstrate promising applications to improve skin health is presented along with future directions of nutraceuticals. Perspective is paramount in understanding the controversies associated with superfoods, phytoestrogens, and endocrine-disruptors because they have both positive and negative connotations. Everyone is exposed to and consumes these molecules everyday regardless of age, gender, or geographic location around the world, and how we understand this is a matter of perspective.
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Affiliation(s)
- Edwin D Lephart
- Department of Cell Biology, Physiology and The Neuroscience Center, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
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21
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Alshehri MM, Sharifi-Rad J, Herrera-Bravo J, Jara EL, Salazar LA, Kregiel D, Uprety Y, Akram M, Iqbal M, Martorell M, Torrens-Mas M, Pons DG, Daştan SD, Cruz-Martins N, Ozdemir FA, Kumar M, Cho WC. Therapeutic Potential of Isoflavones with an Emphasis on Daidzein. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6331630. [PMID: 34539970 PMCID: PMC8448605 DOI: 10.1155/2021/6331630] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 08/26/2021] [Indexed: 12/20/2022]
Abstract
Daidzein is a phytoestrogen isoflavone found in soybeans and other legumes. The chemical composition of daidzein is analogous to mammalian estrogens, and it could be useful with a dual-directional purpose by substituting/hindering with estrogen and estrogen receptor (ER) complex. Hence, daidzein puts forth shielding effects against a great number of diseases, especially those associated with the control of estrogen, such as breast cancer, diabetes, osteoporosis, and cardiovascular disease. However, daidzein also has other ER-independent biological activities, such as oxidative damage reduction acting as an antioxidant, immune regulator as an anti-inflammatory agent, and apoptosis regulation, directly linked to its potential anticancer effects. In this sense, the present review is aimed at providing a deepen analysis of daidzein pharmacodynamics and its implications in human health, from its best-known effects alleviating postmenopausal symptoms to its potential anticancer and antiaging properties.
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Affiliation(s)
- Mohammed M. Alshehri
- Pharmaceutical Care Department, Ministry of National Guard-Health Affairs, Riyadh, Saudi Arabia
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jesús Herrera-Bravo
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Evelyn L. Jara
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile
| | - Luis A. Salazar
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Dorota Kregiel
- Department of Environmental Biotechnology, Lodz University of Technology, Wolczanska 171/173, 90-924 Lodz, Poland
| | - Yadav Uprety
- Amrit Campus, Tribhuvan University, Kathmandu, Nepal
| | - Muhammad Akram
- Department of Eastern Medicine and Surgery, Directorate of Medical Sciences, GC University Faisalabad, Pakistan
| | - Mehwish Iqbal
- Institute of Health Management, Dow University of Health Sciences, Karachi, Pakistan
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy and Centre for Healthy Living, University of Concepción, 4070386 Concepción, Chile
| | - Margalida Torrens-Mas
- Translational Research In Aging and Longevity (TRIAL Group), Health Research Institute of the Balearic Islands (IdISBA), 07122 Palma, Spain
| | - Daniel Gabriel Pons
- Grupo Multidisciplinar de Oncología Traslacional (GMOT), Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears (UIB), Instituto de Investigación Sanitaria Illes Balears (IdISBa), 07122 Palma, Spain
| | - Sevgi Durna Daştan
- Department of Biology, Faculty of Science, Sivas Cumhuriyet University, 58140 Sivas, Turkey
- Beekeeping Development Application and Research Center, Sivas Cumhuriyet University, 58140 Sivas, Turkey
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
- Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Rua Central de Gandra, 1317, 4585-116 Gandra, PRD, Portugal
| | - Fethi Ahmet Ozdemir
- Department of Molecular Biology and Genetics, Faculty of Science and Art, Bingol University, Bingol 1200, Turkey
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR–Central Institute for Research on Cotton Technology, Mumbai 400019, India
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong
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Liu ZM, Zhang D, Li G, Ho SC, Chen YM, Ma J, Huang Q, Li S, Ling WH. The 6-month effect of whole soy and purified isoflavones daidzein on thyroid function-A double-blind, randomized, placebo controlled trial among Chinese equol-producing postmenopausal women. Phytother Res 2021; 35:5838-5846. [PMID: 34494323 DOI: 10.1002/ptr.7244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/24/2021] [Accepted: 08/02/2021] [Indexed: 11/11/2022]
Abstract
The aim of this study was to examine the effect of whole soy and purified daidzein on markers of thyroid function in Chinese postmenopausal women who were equol-producers. Total 270 eligible women were randomized to either one of the three isocaloric supplements: 40 g soy flour (whole soy group), 40 g low-fat milk powder +63 mg daidzein (daidzein group) or 40 g low-fat milk powder (placebo) daily for 6 months. Serum thyroid markers were tested at baseline and 6 months for thyroid stimulating hormone, free triiodothyronine, reverse triiodothyronine and free thyroxine (FT4). There was no significant difference in the 6-month changes of thyroid markers among the three groups. Subgroup analysis among women with lowered thyroid function suggested a modest decrease of FT4. This randomized controlled trial among Chinese equol-producing postmenopausal women indicates the consumption of whole soy and purified daidzein at the provided dosages are safe and have no detrimental effect on thyroid function.
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Affiliation(s)
- Zhao-Min Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Di Zhang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Guoyi Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Suzanne C Ho
- Department of Epidemiology, Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China
| | - Yu-Ming Chen
- Department of Biostatistics and Epidemiology, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Jing Ma
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Qi Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Shuyi Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
| | - Wen-Hua Ling
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-sen University (North Campus), Guangzhou, China
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23
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Abstract
The coronavirus disease 2019 (COVID-19) pandemic in Japan is not as disastrous as it is in other Western countries, possibly because of certain lifestyle factors. One such factor might be the seaweed-rich diet commonly consumed in Japan. COVID-19 is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which binds to angiotensin-converting enzyme 2 (ACE2) on the cell surface and downregulates ACE2, likely elevating the ratio of angiotensin-converting enzyme (ACE) to ACE2. The overreaction of the immune system, combined with the cytokine storm and ACE dominance, is purported to cause the condition of COVID-19 patients to deteriorate rapidly. Dietary seaweeds contain numerous components, including ACE inhibitory peptides, soluble dietary fibers (eg, fucoidan, porphyran), omega-3 fatty acids, fucoxanthin, fucosterol, vitamins D3 and B12, and phlorotannins. These components exert antioxidant, anti-inflammatory, and antiviral effects directly as well as indirectly through prebiotic effects. It is possible that ACE inhibitory components could minimize the ACE dominance caused by SARS-CoV-2 infection. Thus, dietary seaweeds might confer protection against COVID-19 through multiple mechanisms. Overconsumption of seaweeds should be avoided, however, as seaweeds contain high levels of iodine.
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Affiliation(s)
- Kenichi Tamama
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA; the Clinical Laboratories, University of Pittsburgh Medical Center Presbyterian Hospital, Pittsburgh, Pennsylvania, USA; the McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; and the Clinical Laboratory, UMPC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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24
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Janulewicz PA, Carlson JM, Wesselink AK, Wise LA, Hatch EE, Edwards LM, Peters JL. Urinary Isoflavones Levels in Relation to Serum Thyroid Hormone Concentrations in Female and Male Adults in the U.S. General Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2021; 31:389-400. [PMID: 31490099 DOI: 10.1080/09603123.2019.1663497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
Isoflavones are phytoestrogens found in plant-based foods and nutritional supplements. Experimental studies show a positive association between isoflavones and hypothyroidism, but epidemiological findings are conflicting. We used multivariable linear regression to examine the association between urinary isoflavone concentrations and serum thyroid hormone concentrations in the National Health and Nutrition Examination Survey (2007-2010). In this study, we found that Daidzein and O-DMA associations with free T4 were stronger among women: a 10-fold increase in daidzein was associated with a 3.2% (95% CI: 1.9%, 4.5%) increase in women and a 0.6% (95% CI: -1.7%, 0.6%) decrease in men and a 10-fold increase in O-DMA was related to a 2.0% (95% CI: 1.1%, 2.9%) increase in women and a 0.3% (95% CI: -1.2%, 0.5%) decrease in men. In this study, selected urinary isoflavone concentrations were associated with serum thyroid hormone concentration in a sex-dependent fashion.
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Affiliation(s)
- Patricia A Janulewicz
- Environmental Health Department, Boston University School of Public Health, Boston, MA, USA
| | - Jeffrey M Carlson
- Environmental Health Department, Boston University School of Public Health, Boston, MA, USA
| | - Amelia K Wesselink
- Epidemiology Department, Boston University School of Public Health, Boston, MA, USA
| | - Lauren A Wise
- Epidemiology Department, Boston University School of Public Health, Boston, MA, USA
| | - Elizabeth E Hatch
- Epidemiology Department, Boston University School of Public Health, Boston, MA, USA
| | - Lariah M Edwards
- Environmental Health Department, Boston University School of Public Health, Boston, MA, USA
| | - Junenette L Peters
- Environmental Health Department, Boston University School of Public Health, Boston, MA, USA
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25
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Di Dalmazi G, Giuliani C. Plant constituents and thyroid: A revision of the main phytochemicals that interfere with thyroid function. Food Chem Toxicol 2021; 152:112158. [PMID: 33789121 DOI: 10.1016/j.fct.2021.112158] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 01/06/2023]
Abstract
In the past few decades, there has been a lot of interest in plant constituents for their antioxidant, anti-inflammatory, anti-microbial and anti-proliferative properties. However, concerns have been raised on their potential toxic effects particularly when consumed at high dose. The anti-thyroid effects of some plant constituents have been known for some time. Indeed, epidemiological observations have shown the causal association between staple food based on brassicaceae or soybeans and the development of goiter and/or hypothyroidism. Herein, we review the main plant constituents that interfere with normal thyroid function such as cyanogenic glucosides, polyphenols, phenolic acids, and alkaloids. In detail, we summarize the in vitro and in vivo studies present in the literature, focusing on the compounds that are more abundant in foods or that are available as dietary supplements. We highlight the mechanism of action of these compounds on thyroid cells by giving a particular emphasis to the experimental studies that can be significant for human health. Furthermore, we reveal that the anti-thyroid effects of these plant constituents are clinically evident only when they are consumed in very large amounts or when their ingestion is associated with other conditions that impair thyroid function.
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Affiliation(s)
- Giulia Di Dalmazi
- Center for Advanced Studies and Technology (CAST) and Department of Medicine and Aging Science, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy; Department of Medicine and Aging Science, Translational Medicine PhD Program, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy.
| | - Cesidio Giuliani
- Center for Advanced Studies and Technology (CAST) and Department of Medicine and Aging Science, University "G. d'Annunzio" of Chieti-Pescara, 66100, Chieti, Italy.
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26
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Messina M, Mejia SB, Cassidy A, Duncan A, Kurzer M, Nagato C, Ronis M, Rowland I, Sievenpiper J, Barnes S. Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data. Crit Rev Food Sci Nutr 2021; 62:5824-5885. [PMID: 33775173 DOI: 10.1080/10408398.2021.1895054] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Soybeans are a rich source of isoflavones, which are classified as phytoestrogens. Despite numerous proposed benefits, isoflavones are often classified as endocrine disruptors, based primarily on animal studies. However, there are ample human data regarding the health effects of isoflavones. We conducted a technical review, systematically searching Medline, EMBASE, and the Cochrane Library (from inception through January 2021). We included clinical studies, observational studies, and systematic reviews and meta-analyses (SRMA) that examined the relationship between soy and/or isoflavone intake and endocrine-related endpoints. 417 reports (229 observational studies, 157 clinical studies and 32 SRMAs) met our eligibility criteria. The available evidence indicates that isoflavone intake does not adversely affect thyroid function. Adverse effects are also not seen on breast or endometrial tissue or estrogen levels in women, or testosterone or estrogen levels, or sperm or semen parameters in men. Although menstrual cycle length may be slightly increased, ovulation is not prevented. Limited insight could be gained about possible impacts of in utero isoflavone exposure, but the existing data are reassuring. Adverse effects of isoflavone intake were not identified in children, but limited research has been conducted. After extensive review, the evidence does not support classifying isoflavones as endocrine disruptors.
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Affiliation(s)
- Mark Messina
- Department of Nutrition, Loma Linda University, Loma Linda, California, USA
| | - Sonia Blanco Mejia
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Aedin Cassidy
- Nutrition and Preventive Medicine, Queen's University, Belfast, Northern Ireland, UK
| | - Alison Duncan
- College of Biological Sciences, University of Guelph, Guelph, Canada
| | - Mindy Kurzer
- Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
| | - Chisato Nagato
- Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Martin Ronis
- Health Sciences Center, Louisiana State University Health Sciences Center, Baton Rouge, New Orleans, USA
| | - Ian Rowland
- Human Nutrition, University of Reading, Reading, England, UK
| | | | - Stephen Barnes
- Department of Pharmacology and Toxicology, University of Alabama, Alabama, USA
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27
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Iodine nutrition: Disorders, monitoring and policies. ADVANCES IN FOOD AND NUTRITION RESEARCH 2021; 96:365-415. [PMID: 34112358 DOI: 10.1016/bs.afnr.2021.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Iodine is an essential mineral nutrient and an integral component of thyroid hormones. Iodine deficiency is typically associated with goiter, but can have more serious health implications. Adequate iodine status is important for normal brain development. Iodine deficiency in utero or in early life can cause severe neurological and cognitive impairment. Over the last three decades, global efforts have reduced the prevalence of iodine deficiency disorders (IDD) in many areas of the world with implementation of nutrition policies and programs such as "salt" iodization. However, in a number of areas iodine deficiency is still widespread. Iodine deficiency in remote regions with high poverty will be more difficult to eradicate. Efforts to eliminate IDD in affected areas and sustaining successful iodine programs will be a priority given the substantial public health and economic benefits. A key component will be periodic monitoring of population iodine status to ensure sufficient intakes and the absence of excessive intakes. Median urinary iodine concentration (UIC), a validated biomarker for assessing population iodine status, will facilitate monitoring. Research validating "usual" UIC for use in combination with the Estimated Average Requirement cut-point method will expand its utility and allow accurate determination of the prevalence of inadequate intakes in populations. Further research on the development of biomarkers for assessment of individual iodine status for routine patient care will be important.
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28
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Bosland MC, Enk E, Schmoll J, Schlicht MJ, Randolph C, Deaton RJ, Xie H, Zeleniuch-Jacquotte A, Kato I. Soy protein supplementation in men following radical prostatectomy: a 2-year randomized, placebo-controlled clinical trial. Am J Clin Nutr 2021; 113:821-831. [PMID: 33564828 PMCID: PMC8024002 DOI: 10.1093/ajcn/nqaa390] [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] [Received: 08/17/2020] [Accepted: 11/23/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Many studies have addressed effects of dietary supplementation with soy protein, but most have been inconsistent and few have been long-term studies in men. OBJECTIVES This study was a secondary analysis of body weight, blood pressure, thyroid hormones, iron status, and clinical chemistry in a 2-y trial of soy protein supplementation in middle-aged to older men. METHODS Data were analyzed as secondary outcomes of a randomized controlled trial of dietary supplementation with 20 g/d soy protein isolate, providing 41 mg/d total isoflavones and 23 mg/d genistein, in 44- to 75-y-old men who were at risk of cancer recurrence following prostatectomy randomized to soy (n = 50) or a casein-based placebo (n = 43). Weight, blood pressure, and blood samples were collected at baseline, every 2 mo in year 1, and every 3 mo in year 2. RESULTS Compared with casein, soy supplementation did not affect body weight, blood pressure, serum total cholesterol, calcium, phosphorus, and thyroid hormones. Serum ferritin concentrations doubled over 2 y in both groups (117-129%), whereas hemoglobin and hematocrit increased slightly. In an exploratory subgroup analysis of soy group data, weight increased in subjects producing equol but not in nonproducers. Blood pressure was reduced in nonequol producers but not in producers. Other endpoints were not affected by equol production status. CONCLUSIONS Soy protein supplementation for 2 y compared with a casein-based placebo did not affect body weight, blood pressure, serum total cholesterol, iron status parameters, calcium, phosphorus, and thyroid hormones. Exploratory analysis suggests that equol production status of subjects on soy may modify effects of soy on body weight and possibly blood pressure. This trial was registered at clinicaltrials.gov as NCT00765479.
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Affiliation(s)
| | - Erika Enk
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Joanne Schmoll
- Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA
| | - Michael J Schlicht
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Carla Randolph
- Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA
| | - Ryan J Deaton
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Hui Xie
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Ikuko Kato
- Department of Environmental Medicine, New York University School of Medicine, New York, NY, USA,Departments of Oncology and Pathology, Wayne State University, Detroit, MI, USA
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29
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Silva H. The Vascular Effects of Isolated Isoflavones-A Focus on the Determinants of Blood Pressure Regulation. BIOLOGY 2021; 10:49. [PMID: 33445531 PMCID: PMC7827317 DOI: 10.3390/biology10010049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/27/2020] [Accepted: 01/02/2021] [Indexed: 02/07/2023]
Abstract
Isoflavones are phytoestrogen compounds with important biological activities, including improvement of cardiovascular health. This activity is most evident in populations with a high isoflavone dietary intake, essentially from soybean-based products. The major isoflavones known to display the most important cardiovascular effects are genistein, daidzein, glycitein, formononetin, and biochanin A, although the closely related metabolite equol is also relevant. Most clinical studies have been focused on the impact of dietary intake or supplementation with mixtures of compounds, with only a few addressing the effect of isolated compounds. This paper reviews the main actions of isolated isoflavones on the vasculature, with particular focus given to their effect on the determinants of blood pressure regulation. Isoflavones exert vasorelaxation due to a multitude of pathways in different vascular beds. They can act in the endothelium to potentiate the release of NO and endothelium-derived hyperpolarization factors. In the vascular smooth muscle, isoflavones modulate calcium and potassium channels, leading to hyperpolarization and relaxation. Some of these effects are influenced by the binding of isoflavones to estrogen receptors and to the inhibition of specific kinase enzymes. The vasorelaxation effects of isoflavones are mostly obtained with plasma concentrations in the micromolar range, which are only attained through supplementation. This paper highlights isolated isoflavones as potentially suitable alternatives to soy-based foodstuffs and supplements and which could enlarge the current therapeutic arsenal. Nonetheless, more studies are needed to better establish their safety profile and elect the most useful applications.
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Affiliation(s)
- Henrique Silva
- Informetrics Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam;
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
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30
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Oyola MG, Johnson RC, Bauman BM, Frey KG, Russell AL, Cho‐Clark M, Buban KN, Bishop‐Lilly KA, Merrell DS, Handa RJ, Wu TJ. Gut microbiota and metabolic marker alteration following dietary isoflavone-photoperiod interaction. Endocrinol Diabetes Metab 2021; 4:e00190. [PMID: 33532621 PMCID: PMC7831223 DOI: 10.1002/edm2.190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/09/2020] [Accepted: 09/12/2020] [Indexed: 11/06/2022] Open
Abstract
Introduction The interaction between isoflavones and the gut microbiota has been highlighted as a potential regulator of obesity and diabetes. In this study, we examined the interaction between isoflavones and a shortened activity photoperiod on the gut microbiome. Methods Male mice were exposed to a diet containing no isoflavones (NIF) or a regular diet (RD) containing the usual isoflavones level found in a standard vivarium chow. These groups were further divided into regular (12L:12D) or short active (16L:8D) photoperiod, which mimics seasonal changes observed at high latitudes. White adipose tissue and genes involved in lipid metabolism and adipogenesis processes were analysed. Bacterial genomic DNA was isolated from fecal boli, and 16S ribosomal RNA sequencing was performed. Results NIF diet increased body weight and adipocyte size when compared to mice on RD. The lack of isoflavones and photoperiod alteration also caused dysregulation of lipoprotein lipase (Lpl), glucose transporter type 4 (Glut-4) and peroxisome proliferator-activated receptor gamma (Pparg) genes. Using 16S ribosomal RNA sequencing, we found that mice fed the NIF diet had a greater proportion of Firmicutes than Bacteroidetes when compared to animals on the RD. These alterations were accompanied by changes in the endocrine profile, with lower thyroid-stimulating hormone levels in the NIF group compared to the RD. Interestingly, the NIF group displayed increased locomotion as compared to the RD group. Conclusion Together, these data show an interaction between the gut bacterial communities, photoperiod length and isoflavone compounds, which may be essential for understanding and improving metabolic health.
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Affiliation(s)
- Mario G. Oyola
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
- Center for Neuroscience and Regenerative MedicineUniformed Services University of the Health SciencesBethesdaMDUSA
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaMDUSA
| | - Ryan C. Johnson
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaMDUSA
| | - Bradly M. Bauman
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
| | - Kenneth G. Frey
- Genomics and Bioinformatics DepartmentBiological Defense Research DirectorateNaval Medical Research Center – FrederickFort DetrickMDUSA
| | - Ashley L. Russell
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
- Center for Neuroscience and Regenerative MedicineUniformed Services University of the Health SciencesBethesdaMDUSA
| | - Madelaine Cho‐Clark
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
| | - Katelyn N. Buban
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
- Henry M. Jackson Foundation for the Advancement of Military MedicineBethesdaMDUSA
| | - Kimberly A. Bishop‐Lilly
- Genomics and Bioinformatics DepartmentBiological Defense Research DirectorateNaval Medical Research Center – FrederickFort DetrickMDUSA
- Program in Emerging Infectious DiseasesUniformed Services University of the Health SciencesBethesdaMDUSA
| | - D. Scott Merrell
- Program in Emerging Infectious DiseasesUniformed Services University of the Health SciencesBethesdaMDUSA
- Department of Microbiology and ImmunologyUniformed Services University of the Health SciencesBethesdaMDUSA
| | - Robert J. Handa
- Department of Biomedical SciencesColorado State UniversityFort CollinsCOUSA
| | - T. John Wu
- Department of Obstetrics and GynecologyUniformed Services University of the Health SciencesBethesdaMDUSA
- Center for Neuroscience and Regenerative MedicineUniformed Services University of the Health SciencesBethesdaMDUSA
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31
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Hertzler SR, Lieblein-Boff JC, Weiler M, Allgeier C. Plant Proteins: Assessing Their Nutritional Quality and Effects on Health and Physical Function. Nutrients 2020; 12:E3704. [PMID: 33266120 PMCID: PMC7760812 DOI: 10.3390/nu12123704] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/21/2020] [Accepted: 11/27/2020] [Indexed: 02/06/2023] Open
Abstract
Consumer demand for plant protein-based products is high and expected to grow considerably in the next decade. Factors contributing to the rise in popularity of plant proteins include: (1) potential health benefits associated with increased intake of plant-based diets; (2) consumer concerns regarding adverse health effects of consuming diets high in animal protein (e.g., increased saturated fat); (3) increased consumer recognition of the need to improve the environmental sustainability of food production; (4) ethical issues regarding the treatment of animals; and (5) general consumer view of protein as a "positive" nutrient (more is better). While there are health and physical function benefits of diets higher in plant-based protein, the nutritional quality of plant proteins may be inferior in some respects relative to animal proteins. This review highlights the nutritional quality of plant proteins and strategies for wisely using them to meet amino acid requirements. In addition, a summary of studies evaluating the potential benefits of plant proteins for both health and physical function is provided. Finally, potential safety issues associated with increased intake of plant proteins are addressed.
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Affiliation(s)
- Steven R. Hertzler
- Scientific and Medical Affairs, Abbott Nutrition, 2900 Easton Square Place, Columbus, OH 43219, USA; (J.C.L.-B.); (M.W.); (C.A.)
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32
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Zupo R, Castellana F, Panza F, Lampignano L, Murro I, Di Noia C, Triggiani V, Giannelli G, Sardone R, De Pergola G. Adherence to a Mediterranean Diet and Thyroid Function in Obesity: A Cross-Sectional Apulian Survey. Nutrients 2020; 12:E3173. [PMID: 33081337 PMCID: PMC7603040 DOI: 10.3390/nu12103173] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 12/12/2022] Open
Abstract
Much research suggests that Mediterranean eating habits and lifestyle contribute to counteract the risk of chronic diseases while promoting longevity, but little information is available on the effects of the Mediterranean diet (Med-Diet) on thyroid function, particularly among overweight/obese subjects. Nevertheless, consistent data reported a slight increase in serum levels of the thyroid-stimulating hormone (TSH) and a higher rate of conversion of thyroxine (T4) to triiodothyronine (T3) in obesity. This cross-sectional study was aimed at investigating the relationship between adherence to the Med-Diet and circulating thyroid hormones in a cohort of overweight/obese subjects from Apulia (Southern Italy). Methods: We studied 324 consecutive outpatient subjects (228 women and 96 men, age range 14-72 years) taking no drug therapy and showing normal levels of thyroid hormones, but complicated by overweight and obesity (body mass index (BMI) ≥ 25 Kg/m2). The PREDIMED (PREvención con DIeta MEDiterránea) questionnaire was cross-sectionally administered to assess the adherence to the Med-Diet, and hormonal, metabolic, and routine laboratory parameters were collected. Results: Higher adherence to Med-Diet was found to be inversely related to free T3 (p < 0.01) and T4 (p < 0.01) serum levels. Considering each item in the PREDIMED questionnaire, people consuming at least four spoonfuls of extra-virgin olive oil (EVOO) per day, as well as those consuming at least two servings of vegetables per day, had lower free T3 levels (p 0.033 and p 0.021, respectively). Furthermore, consuming at least four spoonfuls of EVOO per day was found to be associated to lower free T4 serum concentrations (p 0.011). Multinomial logistic regression models, performed on tertiles of thyroid hormones to further investigate the relationship with Med-Diet, corroborated the significance only for free T4. Conclusion: Increased adherence to the Med-Diet was independently associated to a slightly reduced thyroid function, but still within the reference range for free T3 and T4 serum levels. This first finding in this field opens up a research line on any underlying biological interplay.
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Affiliation(s)
- Roberta Zupo
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
| | - Fabio Castellana
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
| | - Francesco Panza
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
- Neurodegenerative Disease Unit, Department of Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Luisa Lampignano
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
| | - Isanna Murro
- Department of Biomedical Science and Human Oncology, School of Medicine, Policlinico, University of Bari, 70124 Bari, Italy; (I.M.); (C.D.N.)
| | - Carmen Di Noia
- Department of Biomedical Science and Human Oncology, School of Medicine, Policlinico, University of Bari, 70124 Bari, Italy; (I.M.); (C.D.N.)
| | - Vincenzo Triggiani
- Section of Internal Medicine, Geriatrics, Endocrinology and Rare Disease, Interdisciplinary Department of Medicine, School of Medicine, University of Bari, 70124 Bari, Italy;
| | - Gianluigi Giannelli
- Scientific Direction, National Institute of Gastroenterology “Saverio de Bellis”, Research Hospital, Castellana Grotte, 70013 Bari, Italy;
| | - Rodolfo Sardone
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
| | - Giovanni De Pergola
- Population Health Unit—“Salus in Apulia Study”—National Institute of Gastroenterology—Research Hospital, IRCCS “S. De Bellis”, Castellana Grotte, 70013 Bari, Italy; (F.C.); (F.P.); (L.L.); (R.S.); (G.D.P.)
- Department of Biomedical Science and Human Oncology, School of Medicine, Policlinico, University of Bari, 70124 Bari, Italy; (I.M.); (C.D.N.)
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Is There Such a Thing as "Anti-Nutrients"? A Narrative Review of Perceived Problematic Plant Compounds. Nutrients 2020; 12:nu12102929. [PMID: 32987890 PMCID: PMC7600777 DOI: 10.3390/nu12102929] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/19/2020] [Accepted: 09/22/2020] [Indexed: 12/12/2022] Open
Abstract
Plant-based diets are associated with reduced risk of lifestyle-induced chronic diseases. The thousands of phytochemicals they contain are implicated in cellular-based mechanisms to promote antioxidant defense and reduce inflammation. While recommendations encourage the intake of fruits and vegetables, most people fall short of their target daily intake. Despite the need to increase plant-food consumption, there have been some concerns raised about whether they are beneficial because of the various ‘anti-nutrient’ compounds they contain. Some of these anti-nutrients that have been called into question included lectins, oxalates, goitrogens, phytoestrogens, phytates, and tannins. As a result, there may be select individuals with specific health conditions who elect to decrease their plant food intake despite potential benefits. The purpose of this narrative review is to examine the science of these ‘anti-nutrients’ and weigh the evidence of whether these compounds pose an actual health threat.
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Domínguez-López I, Yago-Aragón M, Salas-Huetos A, Tresserra-Rimbau A, Hurtado-Barroso S. Effects of Dietary Phytoestrogens on Hormones throughout a Human Lifespan: A Review. Nutrients 2020; 12:E2456. [PMID: 32824177 PMCID: PMC7468963 DOI: 10.3390/nu12082456] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/31/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023] Open
Abstract
Dietary phytoestrogens are bioactive compounds with estrogenic activity. With the growing popularity of plant-based diets, the intake of phytoestrogen-rich legumes (especially soy) and legume-derived foods has increased. Evidence from preclinical studies suggests these compounds may have an effect on hormones and health, although the results of human trials are unclear. The effects of dietary phytoestrogens depend on the exposure (phytoestrogen type, matrix, concentration, and bioavailability), ethnicity, hormone levels (related to age, sex, and physiological condition), and health status of the consumer. In this review, we have summarized the results of human studies on dietary phytoestrogens with the aim of assessing the possible hormone-dependent outcomes and health effects of their consumption throughout a lifespan, focusing on pregnancy, childhood, adulthood, and the premenopausal and postmenopausal stages. In pregnant women, an improvement of insulin metabolism has been reported in only one study. Sex hormone alterations have been found in the late stages of childhood, and goitrogenic effects in children with hypothyroidism. In premenopausal and postmenopausal women, the reported impacts on hormones are inconsistent, although beneficial goitrogenic effects and improved glycemic control and cardiovascular risk markers have been described in postmenopausal individuals. In adult men, different authors report goitrogenic effects and a reduction of insulin in non-alcoholic fatty liver patients. Further carefully designed studies are warranted to better elucidate the impact of phytoestrogen consumption on the endocrine system at different life stages.
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Affiliation(s)
- Inés Domínguez-López
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, School of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (I.D.-L.); (M.Y.-A.); (S.H.-B.)
| | - Maria Yago-Aragón
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, School of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (I.D.-L.); (M.Y.-A.); (S.H.-B.)
| | - Albert Salas-Huetos
- Andrology and IVF Laboratory, Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT 84108, USA;
| | - Anna Tresserra-Rimbau
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, School of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (I.D.-L.); (M.Y.-A.); (S.H.-B.)
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Unitat de Nutrició, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, 43204 Reus, Spain
- Institut d’Investigació Sanitària Pere Virgili (IISPV), 43201 Reus, Spain
| | - Sara Hurtado-Barroso
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, School of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain; (I.D.-L.); (M.Y.-A.); (S.H.-B.)
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
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Herbal Active Ingredients: An Emerging Potential for the Prevention and Treatment of Papillary Thyroid Carcinoma. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1340153. [PMID: 32090065 PMCID: PMC7013308 DOI: 10.1155/2020/1340153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/28/2019] [Accepted: 12/05/2019] [Indexed: 02/06/2023]
Abstract
Papillary thyroid carcinoma (PTC) is the most common subtype of differentiated thyroid cancers in Asian coastal cities, where the patients have increased risk of potentially high or excessive iodine intake. Given the high metastasis and recurrence of patients with BRAFV600E mutation, the mortality rate of thyroid cancer has recently shown an upward trend. A variety of therapies, including surgery, radiotherapy, and chemotherapy, have been used to treat thyroid cancer, but these therapies still have limitations, including postoperative complications, drug resistance, poor efficacy, or serious side effects. Recent studies have shown the potential of active ingredients derived from herbal medicine in inhibiting PTC via various cell signaling pathways. Some plant-derived compounds, such as apigenin, genistein, and curcumin, are also known to prevent and treat PTC. This article summarizes the recent advances in the structure-functional impact of anti-PTC active ingredients and their effects on PTC cells and tumor microenvironments with an emphasis on their challenges from basic research to clinical practice.
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Abstract
A wide variety of plant species provide edible seeds. Seeds are the dominant source of human calories and protein. The most important and popular seed food sources are cereals, followed by legumes and nuts. Their nutritional content of fiber, protein, and monounsaturated/polyunsaturated fats make them extremely nutritious. They are important additions to our daily food consumption. When consumed as part of a healthy diet, seeds can help reduce blood sugar, cholesterol, and blood pressure.
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Wojtas N, Wadolowska L, Bandurska-Stankiewicz E. Evaluation of Qualitative Dietary Protocol (Diet4Hashi) Application in Dietary Counseling in Hashimoto Thyroiditis: Study Protocol of a Randomized Controlled Trial. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E4841. [PMID: 31810194 PMCID: PMC6926951 DOI: 10.3390/ijerph16234841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/27/2019] [Accepted: 11/29/2019] [Indexed: 01/12/2023]
Abstract
The current state of knowledge related to diet in Hashimoto thyroiditis (HT) is far from satisfactory, as many HT subjects experience several disorders and report reduced quality of life. There are three aims of the study: (1) to develop a qualitative dietary protocol (QDP; 'Diet4Hashi') as a simple, graphic-text tool dedicated to TH subjects, (2) to evaluate the use of the QDP in dietetic counseling compared to conventional dietetic counseling (CDC) in HT women, and (3) to assess the impact of both the QDP and the CDC on the diet quality, quality of life, adiposity, and metabolic parameters of HT women. The QDP is based on subject self-monitoring supported with a graphic-text tool to help them in food selection and adequate food frequency consumption, while the CDC on oral explanation and printed sample menus were provided by a dietician. The QDP contains two lists: (A) foods recommended for consumption and (B) foods with limited consumption, along with indicated consumption frequency per day/week/month. Both approaches include the same dietary recommendations for HT extracted from the literature but differ in subject-dietician cooperation. To summarize the evidence regarding dietary recommendations in HT, the PubMed, Embase, and Cochrane Library databases (to March 2019) and the bibliographies of key articles were searched. The study is designed as a dietary intervention lasting six months in two parallel groups: experimental and control. In the experimental group, the QDP will be applied, while in the control group, the CDC will be applied. In total, the study will include a baseline of 100 women with diagnosed HT. The subjects will be randomly allocated into the experimental/control groups (50/50). Data related to diet quality and other lifestyle factors, nutrition knowledge, quality of life, thyroid function, body composition, blood pressure, serum fasting glucose, and lipid profile at baseline and after a six-month follow-up will be collected. This study was conducted to develop a dietary protocol (Diet4Hashi) that is easy to follow for HT subjects, and it will contribute to providing valuable data that are useful to dieticians and physicians. It is anticipated that this graphic-text qualitative dietary protocol, by improving food selection and diet quality, may reduce adiposity and improve metabolic parameters and the quality of life of HT women.
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Affiliation(s)
- Natalia Wojtas
- Department of Human Nutrition, University of Warmia and Mazury in Olsztyn, Sloneczna 45F, 10-718 Olsztyn, Poland;
| | - Lidia Wadolowska
- Department of Human Nutrition, University of Warmia and Mazury in Olsztyn, Sloneczna 45F, 10-718 Olsztyn, Poland;
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Duntas LH, Jonklaas J. Levothyroxine Dose Adjustment to Optimise Therapy Throughout a Patient's Lifetime. Adv Ther 2019; 36:30-46. [PMID: 31485977 PMCID: PMC6822824 DOI: 10.1007/s12325-019-01078-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Indexed: 12/12/2022]
Abstract
Levothyroxine is the standard therapy for patients with hypothyroidism, a condition that affects up to 5% of people worldwide. While levothyroxine therapy has substantially improved the lives of millions of hypothyroid patients since its introduction in 1949, the complexity of maintaining biochemical and clinical euthyroidism in patients undergoing treatment with levothyroxine cannot be underestimated. Initial dosing of levothyroxine can vary greatly and may be based on the amount of residual thyroid function retained by the patient, the body weight or lean body mass of the patient, and thyroid-stimulating hormone levels. As levothyroxine is usually administered over a patient's lifetime, physiological changes throughout life will affect the dose of levothyroxine required to maintain euthyroidism. Furthermore, dose adjustments may need to be made in patients with concomitant medical conditions, in patients taking certain medications, as well as in elderly patients. Patients who have undergone any weight or hormonal changes may require dose adjustments, and the majority of pregnant women require increased doses of levothyroxine. Optimal treatment of hypothyroidism requires a partnership between patient and physician. The physician is tasked with vigilant appraisal of the patient's status based on a thorough clinical and laboratory assessment and appropriate adjustment of their levothyroxine therapy. The patient in turn is tasked with medication adherence and reporting of symptomatology and any changes in their medical situation. The goal is consistent maintenance of euthyroidism, without the patient experiencing the adverse events and negative health consequences of under- or overtreatment.Funding Merck.Plain Language Summary Plain language summary available for this article.
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Affiliation(s)
- Leonidas H Duntas
- Unit of Endocrinology, Diabetes, and Metabolism, Thyroid Section, Evgenidion Hospital, Athens, Greece.
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Křížová L, Dadáková K, Kašparovská J, Kašparovský T. Isoflavones. Molecules 2019; 24:E1076. [PMID: 30893792 PMCID: PMC6470817 DOI: 10.3390/molecules24061076] [Citation(s) in RCA: 339] [Impact Index Per Article: 67.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 12/13/2022] Open
Abstract
Phytoestrogens are naturally occurring nonsteroidal phenolic plant compounds that, due to their molecular structure and size, resemble vertebrate steroids estrogens. This review is focused on plant flavonoids isoflavones, which are ranked among the most estrogenic compounds. The main dietary sources of isoflavones for humans are soybean and soybean products, which contain mainly daidzein and genistein. When they are consumed, they exert estrogenic and/or antiestrogenic effects. Isoflavones are considered chemoprotective and can be used as an alternative therapy for a wide range of hormonal disorders, including several cancer types, namely breast cancer and prostate cancer, cardiovascular diseases, osteoporosis, or menopausal symptoms. On the other hand, isoflavones may also be considered endocrine disruptors with possible negative influences on the state of health in a certain part of the population or on the environment. This review deals with isoflavone classification, structure, and occurrence, with their metabolism, biological, and health effects in humans and animals, and with their utilization and potential risks.
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Affiliation(s)
- Ludmila Křížová
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic.
| | - Kateřina Dadáková
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic.
| | - Jitka Kašparovská
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic.
| | - Tomáš Kašparovský
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic.
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Otun J, Sahebkar A, Östlundh L, Atkin SL, Sathyapalan T. Systematic Review and Meta-analysis on the Effect of Soy on Thyroid Function. Sci Rep 2019; 9:3964. [PMID: 30850697 PMCID: PMC6408586 DOI: 10.1038/s41598-019-40647-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 02/20/2019] [Indexed: 12/16/2022] Open
Abstract
Soy foods have had an important dietary role in Asian countries for centuries, and in recent years they have become increasingly popular in Western countries as a result of their suggested health benefits. Nevertheless, there are some concerns that soy can have a negative effect on thyroid function and can alter the levels of thyroid hormones. The aim of this systematic review was to investigate the link between soy or soy product consumption and thyroid function via the measurement of thyroid hormone levels. A systematic review and meta-analysis was undertaken on all randomised controlled trials of studies including soy as an intervention and where free triiodothyronine (fT3), free thyroxine (fT4) and thyroid stimulating hormone (TSH) was measured. The search included PubMed, MEDLINE, EMBASE, Cochrane and sources for the grey literature. Quantitative data synthesis was performed using a random-effects model, with standardized mean difference (SMD) and 95% confidence interval as summary statistics. A total of 18 articles were suitable for review. The meta-analysis showed no significant changes in fT3 (WMD: 0.027 pmol/L, 95% CI: -0.052, 0.107, p = 0.499; I2: 55.58%), fT4 (WMD: -0.003 pmol/L, 95% CI: -0.018, 0.011, p = 0.656; I2: 87.58%) while an elevation in TSH levels was observed (WMD: 0.248 mIU/L, 95% CI: 0.001, 0.494, p = 0.049; I2: 80.31%) levels with soy supplementation. There was no evidence of publication bias. Soy supplementation has no effect on the thyroid hormones and only very modestly raises TSH levels, the clinical significance, if any, of the rise in TSH is unclear.
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Affiliation(s)
- Jemiliat Otun
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK.
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Linda Östlundh
- National Medical Library, College of Medicine and Health Sciences, UAE University, Al Ain, UAE
| | | | - Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK
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Dietary Practices Adopted by Track-and-Field Athletes: Gluten-Free, Low FODMAP, Vegetarian, and Fasting. Int J Sport Nutr Exerc Metab 2019; 29:236-245. [DOI: 10.1123/ijsnem.2018-0309] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Some track-and-field athletes implement special diets aiming to improve health and/or performance. An evidence-based approach to any diet is recommended to minimize the risks associated with unnecessary dietary restriction, which may potentially do more harm than good. Four prevalent diets are reviewed in this study: (a) gluten-free; (b) low fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAP); (c) vegetarian; and (d) fasting diets. Recently, gluten-free diets and low FODMAP diets have emerged as novel regimes thought to improve gastrointestinal health and reduce the risk of exercise-associated gastrointestinal symptoms. No direct beneficial outcomes have been associated with avoiding gluten for clinically healthy athletes. Indirectly, a gluten-free diet is associated with other dietary changes, particularly FODMAP reduction, which may improve adverse gastrointestinal symptoms. Vegetarian diets can optimally support athletic demands. However, attention is required to ensure adequate energy and intake of specific nutrients that are less abundant or less well absorbed from plant sources. Finally, fasting is a long-standing concept that is undertaken on a voluntary and obligatory basis. Despite limited supporting research, voluntary fasting is a popular alternative to conventional diets perceptually offering health and body composition benefits. Strict obligatory fasting guidelines likely require the implementation of tailored nutrition strategies to help athletes cope with athletic demands. Overall, a multitude of factors influence adherence to special diets. Even when adherence to a special diet is a necessity, education and advice from an accredited dietitian/nutritionist are recommended for track-and-field athletes to optimize nutrition for health and performance.
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Testa I, Salvatori C, Di Cara G, Latini A, Frati F, Troiani S, Principi N, Esposito S. Soy-Based Infant Formula: Are Phyto-Oestrogens Still in Doubt? Front Nutr 2018; 5:110. [PMID: 30533415 PMCID: PMC6265372 DOI: 10.3389/fnut.2018.00110] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 11/05/2018] [Indexed: 11/24/2022] Open
Abstract
Although Scientific Societies have stated that there are very few indications for the use of soy-based formula (SF) in infant nutrition, their utilization rates have been repeatedly found to be higher than expected. It is likely that a significant role in this regard is played by the belief that the use of SF during infancy can reduce the risk of the development of several diseases later in life. Although no definitive data that can substantiate these claims have been collected, many people perceive soy consumption to confer significant health benefits and might also use soy for infant nutrition. However, not all the problems regarding safety of SF in infants have been definitively solved. Among risks, the potentially toxic role of the phyto-oestrogens contained in SF is not definitively established. In vitro and animal studies have raised suspicions that SF could have potentially negative effects on sexual development and reproductive function, neurobehavioral development, immune function, and thyroid function. Several studies in humans have aimed to assess whether the results of animal studies can be applied to humans and whether SF can be used in infants following the official recommendations. The results are somewhat conflicting. The aim of this narrative review is to discuss what is presently known regarding the impact of phyto-oestrogens in SF on early and late child development. PubMed was used to search for the studies published from January 1980 to June 2017 using the keywords: “soy,” “soy formula,” “child,” “phytoestrogens.” Analysis of the literature showed that a global evaluation of the impact of modern SFs on human development seems to suggest that their use is not associated with relevant abnormalities. Only children with congenital hypothyroidism need adequate monitoring of thyroid function.
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Affiliation(s)
- Ilaria Testa
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Cristina Salvatori
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Giuseppe Di Cara
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Arianna Latini
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Franco Frati
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Stefania Troiani
- Neonatology and Neonatal Intensive Care Unit, Azienda Ospedaliera Santa Maria della Misericordia, Perugia, Italy
| | - Nicola Principi
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
| | - Susanna Esposito
- Pediatric Clinic, Department of Surgical and Biomedical Sciences, Università degli Studi di Perugia, Perugia, Italy
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LC-ESI-MS based characterisation of isoflavones in soybean ( Glycine max (L.) Merr.) from India. Journal of Food Science and Technology 2018; 55:5045-5054. [PMID: 30483000 DOI: 10.1007/s13197-018-3443-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/14/2018] [Accepted: 09/19/2018] [Indexed: 10/28/2022]
Abstract
A total of twenty-one soybean varieties were screened for their morphological characteristics followed by isoflavone content analysis by HPLC. The total isoflavone (TI) content was found within a wide range of 140.9-1048.6 μg/g of soy in different varieties. The highest isoflavone content was found in MAUS-2 followed by DS_2613 and lowest in Karunae (140.9 μg/g of soy). Various isoflavone forms were identified by LC-ESI+ MS. Significant differences in the isoflavone content were observed for all the aglycones and their glucoside conjugates as well as total daidzein, total genistein, total glycitein, and TI. A positive correlation between TI content and growth stages was found during the progression of seed development. An increase of 5.4-fold and 5.3-fold of TI concentration was observed for JS 335 and MAUS-2 respectively, from early to green mature (R5-R8) stage of bean development.
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Oliveira KJ, Chiamolera MI, Giannocco G, Pazos-Moura CC, Ortiga-Carvalho TM. Thyroid Function Disruptors: from nature to chemicals. J Mol Endocrinol 2018; 62:JME-18-0081. [PMID: 30006341 DOI: 10.1530/jme-18-0081] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/03/2018] [Accepted: 07/12/2018] [Indexed: 12/11/2022]
Abstract
The modern concept of thyroid disruptors includes man-made chemicals and bioactive compounds from food that interfere with any aspect of the hypothalamus-pituitary-thyroid axis, thyroid hormone biosynthesis and secretion, blood and transmembrane transport, metabolism and local action of thyroid hormones. This review highlights relevant disruptors that effect populations through their diet: directly from food itself (fish oil and polyunsaturated fatty acids, pepper, coffee, cinnamon and resveratrol/grapes), through vegetable cultivation (pesticides) and from containers for food storage and cooking (bisphenol A, phthalates and polybrominated diphenyl ethers). Due to the vital role of thyroid hormones during every stage of life, we review effects from the gestational period through to adulthood, including evidence from in vitro studies, rodent models, human trials and epidemiological studies.
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Affiliation(s)
- Karen J Oliveira
- K Oliveira, Laboratório de Fisiologia Endócrina e Metabologia, Physiology and Pharmacology, Federal Fluminense University, Niteroi, Brazil
| | - Maria Izabel Chiamolera
- M Chiamolera, Endocrinology, Universidade Federal de Sao Paulo Escola Paulista de Medicina, Sao Paulo, Brazil
| | - Gisele Giannocco
- G Giannocco, Laboratório de Endocrinologia Molecular e Translacional, Universidade Federal de Sao Paulo Escola Paulista de Medicina, Sao Paulo, Brazil
| | - Carmen Cabanelas Pazos-Moura
- C Pazos-Moura, Laboratório de Endocrinologia Molecular, Instituto de Biofisica Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tania Maria Ortiga-Carvalho
- T Ortiga-Carvalho, Laboratório de Endocrinologia Translacional, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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45
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Rizzo G, Baroni L. Soy, Soy Foods and Their Role in Vegetarian Diets. Nutrients 2018; 10:E43. [PMID: 29304010 PMCID: PMC5793271 DOI: 10.3390/nu10010043] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 11/30/2017] [Accepted: 01/03/2018] [Indexed: 02/07/2023] Open
Abstract
Soy is a basic food ingredient of traditional Asian cuisine used for thousands of years. In Western countries, soybeans have been introduced about a hundred years ago and recently they are mainly used for surrogate foods production. Soy and soy foods are common nutritional solutions for vegetarians, due to their high protein content and versatility in the production of meat analogues and milk substitutes. However, there are some doubts about the potential effects on health, such as the effectiveness on cardiovascular risk reduction or, conversely, on the possible disruption of thyroid function and sexual hormones. The soy components that have stimulated the most research interest are isoflavones, which are polyphenols with estrogenic properties highly contained in soybeans. In this review, we discuss the characteristics of soy and soy foods, focusing on their nutrient content, including phytoestrogens and other bioactive substances that are noteworthy for vegetarians, the largest soy consumers in the Western countries. The safety of use will also be discussed, given the growing trend in adoption of vegetarian styles and the new soy-based foods availability.
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Affiliation(s)
| | - Luciana Baroni
- Primary Care Unit, Northern District, Local Health Unit 2, 31100 Treviso, Italy.
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In vitro effects of natural phytoestrogens on sodium/iodide symporter mediated thyroid iodide uptake by using a differentiated TSH-dependent cell line. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.11.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Sathyapalan T, Köhrle J, Rijntjes E, Rigby AS, Dargham SR, Kilpatrick ES, Atkin SL. The Effect of High Dose Isoflavone Supplementation on Serum Reverse T 3 in Euthyroid Men With Type 2 Diabetes and Post-menopausal Women. Front Endocrinol (Lausanne) 2018; 9:698. [PMID: 30524380 PMCID: PMC6262038 DOI: 10.3389/fendo.2018.00698] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 11/06/2018] [Indexed: 11/21/2022] Open
Abstract
Background: The health benefits of soy are widely reported but there are queries on the effect of soy isoflavones on thyroid function and the underlying mechanism of action. Materials and Methods: We examined the effect of soy isoflavones on reverse tri-iodothyronine (or 3,3',5'-tri-iodothyronine; rT3) in two studies comprising 400 patients: 200 men (study 1; 3 months) and 200 post-menopausal women (study 2; 6 months) who were randomized to consume 15 g soy protein with 66 mg of isoflavones (SPI) daily, or 15 g soy protein alone without isoflavones (SP) daily. Results: SPI supplementation increased rT3 serum concentration in both men 0.41 (0.12) vs. 0.45 (0.14) nmol/L and women 0.33 (0.12) vs. 0.37 (0.09) nmol/L at 3 months compared to SP that was not seen at 6 months. Thyroid stimulating hormone (TSH) serum concentrations increased while free thyroxine (fT4) concentrations decreased with 3 months of SPI compared to SP supplementation for both men and women. rT3 correlated with TSH in both studies (p = 0.03) but not with either fT3 or fT4. fT3 levels did not differ between the SPI and SP preparations. Conclusion: Soy isoflavones transiently increased rT3 levels within 3 months though reverted to baseline at 6 months. The mechanism for this would be either rT3 degrading deiodinase 1 and/or deiodinase 2 activities are transiently inhibited at 3 months, or inhibition of deiodinase 3, which generates rT3 from T4 is induced at 6 months. These changes were mirrored in the TSH concentrations, suggesting that short-term high dose isoflavone transiently impairs thyroid function in the first 3 months and may impact on general health during this period. ISRCTN Registry: ISRCTN 90604927; ISRCTN34051237.
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Affiliation(s)
- Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, United Kingdom
| | - Josef Köhrle
- Institut für Experimentelle Endokrinologie, Charité-Universitätsmedizin Berlin, Berlin Institute of Health, CVK, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Eddy Rijntjes
- Institut für Experimentelle Endokrinologie, Charité-Universitätsmedizin Berlin, Berlin Institute of Health, CVK, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Alan S. Rigby
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, United Kingdom
| | | | - Eric S. Kilpatrick
- Department of Clinical Chemistry, Sidra Medical and Research Center, Doha, Qatar
| | - Stephen L. Atkin
- Weill Cornell Medical College Qatar, Doha, Qatar
- *Correspondence: Stephen L. Atkin
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Pałkowska-Goździk E, Lachowicz K, Rosołowska-Huszcz D. Effects of Dietary Protein on Thyroid Axis Activity. Nutrients 2017; 10:nu10010005. [PMID: 29271877 PMCID: PMC5793233 DOI: 10.3390/nu10010005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 12/08/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023] Open
Abstract
Thyroid hormones (TH) are essential for the normal development and function of every vertebrate. The hypothalamic-pituitary-thyroid (HPT) axis is regulated to maintain euthyroid status. One of the most influential environmental factors that determines HPT axis activity is nutrition. Both food availability and substrate diversity affect thyroid hormone economy. The present paper aims to summarize literature data concerning the influence of the amount and the type of protein on thyroid axis activity. This review sheds light on the contribution of a low-protein diet or insufficient intake of essential amino acids to TH abnormalities. We believe that the knowledge of these dependencies could improve the results of nutritional interventions in thyroid axis disorders and enhance the efficiency of animal breeding.
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Affiliation(s)
- Ewelina Pałkowska-Goździk
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska Str., 02-776 Warsaw, Poland.
| | - Katarzyna Lachowicz
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska Str., 02-776 Warsaw, Poland.
| | - Danuta Rosołowska-Huszcz
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska Str., 02-776 Warsaw, Poland.
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49
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Azizi F, Mehran L, Hosseinpanah F, Delshad H, Amouzegar A. Primordial and Primary Preventions of Thyroid Disease. Int J Endocrinol Metab 2017; 15:e57871. [PMID: 29344036 PMCID: PMC5750785 DOI: 10.5812/ijem.57871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/09/2017] [Accepted: 08/14/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Primordial and primary preventions of thyroid diseases are concerned with avoiding the appearance of risk factors, delaying the progression to overt disease, and minimizing the impact of illness. SUMMARY Using related key words, 446 articles related to primordial and primary, preventions of thyroid diseases published between 2001-2015 were evaluated, categorized and analyzed. Prevention and elimination of iodine deficiency are major steps that have been successfully achieved and maintained in many countries of the world in last 2 decades. Recent investigations related to the effect of cigarette smoking, alcohol consumption, and autoimmunity in the prevention of thyroid disorders have been reviewed. CONCLUSIONS The cornerstone for successful prevention of thyroid disease entails timely implementation of its primordial and primary preventions, which must be highly prioritized in related health strategies by health authorities.
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Affiliation(s)
- Fereidoun Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
| | - Ladan Mehran
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
| | - Farhad Hosseinpanah
- Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
| | - Hossein Delshad
- Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
| | - Atieh Amouzegar
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
- Corresponding author: Atieh Amouzegar, Assistant Professor of Internal Medicine and Endocrinology, Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran, P.O. Box: 19395-4763. Tel: +98-2122432503, Fax: +98-2122402463, E-mail:
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50
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Bath SC, Hill S, Infante HG, Elghul S, Nezianya CJ, Rayman MP. Iodine concentration of milk-alternative drinks available in the UK in comparison with cows' milk. Br J Nutr 2017; 118:525-532. [PMID: 28946925 PMCID: PMC5650045 DOI: 10.1017/s0007114517002136] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Iodine deficiency is present in certain groups of the UK population, notably in pregnant women; this is of concern as iodine is required for fetal brain development. UK milk is rich in iodine and is the principal dietary iodine source. UK sales of milk-alternative drinks are increasing but data are lacking on their iodine content. As consumers may replace iodine-rich milk with milk-alternative drinks, we aimed to measure the iodine concentration of those available in the UK. Using inductively coupled plasma-MS, we determined the iodine concentration of seven types of milk-alternative drink (soya, almond, coconut, oat, rice, hazelnut and hemp) by analysing forty-seven products purchased in November/December 2015. For comparison, winter samples of conventional (n 5) and organic (n 5) cows' milk were included. The median iodine concentration of all of the unfortified milk-alternative drinks (n 44) was low, at 7·3 μg/kg, just 1·7 % of our value for winter conventional cows' milk (median 438 μg/kg). One brand (not the market leader), fortified its soya, oat and rice drinks with iodine and those drinks had a higher iodine concentration than unfortified drinks, at 280, 287 and 266 μg/kg, respectively. The iodine concentration of organic milk (median 324 μg/kg) was lower than that of conventional milk. Although many milk-alternative drinks are fortified with Ca, at the time of this study, just three of forty-seven drinks were fortified with iodine. Individuals who consume milk-alternative drinks that are not fortified with iodine in place of cows' milk may be at risk of iodine deficiency unless they consume alternative dietary iodine sources.
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Affiliation(s)
- Sarah C Bath
- 1Department of Nutritional Sciences, Faculty of Health and Medical Sciences,University of Surrey,Guildford,Surrey GU2 7XH,UK
| | - Sarah Hill
- 2LGC Limited,Queens Road,Teddington,Middlesex TW11 0LY,UK
| | | | - Sarah Elghul
- 1Department of Nutritional Sciences, Faculty of Health and Medical Sciences,University of Surrey,Guildford,Surrey GU2 7XH,UK
| | - Carolina J Nezianya
- 1Department of Nutritional Sciences, Faculty of Health and Medical Sciences,University of Surrey,Guildford,Surrey GU2 7XH,UK
| | - Margaret P Rayman
- 1Department of Nutritional Sciences, Faculty of Health and Medical Sciences,University of Surrey,Guildford,Surrey GU2 7XH,UK
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