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Peripubertal soy isoflavone consumption leads to subclinical hypothyroidism in male Wistar rats. J Dev Orig Health Dis 2023; 14:209-222. [PMID: 36017706 DOI: 10.1017/s2040174422000496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Exposure to endocrine-disrupting chemicals during critical windows of development may lead to functional abnormalities in adulthood. Isoflavones are a flavonoid group of phytoestrogens that are recognized by their estrogenic activity and are highly abundant in soybean. Since the thyroid gland presents estrogen receptors and infants, toddlers and teenagers may consume isoflavones from soy-based infant formula and beverages as alternatives to animal milk, we propose to investigate the potential effects of relevant concentrations of soy isoflavones in the regulation of the hypothalamic-pituitary (HP) thyroid axis using peripubertal male rats as an experimental model. Thirty-two 23-day-old male rats were exposed to 0.5, 5, or 50 mg of soy isoflavones/kg from weaning to 60 days of age, when they were euthanized, and the tissues were collected to evaluate the mRNA expression of genes involved in the regulation of the HP thyroid axis and dosages of thyroid hormones (THs). Serum TSH concentrations were increased, while alterations were not observed in serum concentrations of triiodothyronine and thyroxine. Regarding mRNA gene expression, Mct-8 was increased in the hypothalamus, Mct-8, Thra1, and Thrb2 were decreased in the pituitary, and Nis and Pds were reduced in the thyroid. In the heart, Mct8 and Thrb2 were increased, and Thra1 was decreased. In the liver, Mct8, Thra1, and Thrb2 were decreased. These results suggest that the consumption of relevant doses of soy isoflavones during the peripubertal period in males may induce subclinical hypothyroidism, with alterations in the regulation of the HP thyroid axis, modulation of TH synthesis, and peripheral alterations in TH target organs.
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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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Oliveira JM, Oliveira IM, Sleiman HK, Dal Forno GO, Romano MA, Romano RM. Consumption of soy isoflavones during the prepubertal phase delays puberty and causes hypergonadotropic hypogonadism with disruption of hypothalamic-pituitary gonadotropins regulation in male rats. Toxicol Lett 2022; 369:1-11. [PMID: 35963426 DOI: 10.1016/j.toxlet.2022.08.004] [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: 01/27/2022] [Revised: 07/17/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
Isoflavones are phytoestrogens with recognized estrogenic activity but may also affect testosterone, corticosterone and thyroid hormone levels in experimental models. However, the molecular mechanisms involved in these alterations are still unclear. Isoflavones are present in soy-based infant formula, in breast milk after the consumption of soy by the mother and are widely used for the preparation of beverages consumed by toddlers and teenagers. In this sense, we proposed to investigate the effects of soy isoflavone exposure during the prepubertal period, a recognized window of sensitivity for endocrine disruption, over the hypothalamic-pituitary-testicular (HPT) axis. For this, 42 3-week-old male Wistar rats were exposed to 0.5, 5 or 50 mg of soy isoflavones/kg from postnatal day (PND) 23 to PND60. We evaluated body growth, age at puberty, serum concentrations of LH, FSH, testosterone and estradiol, and the expression of the transcripts (mRNA) of genes encoding key genes controlling the hypothalamic-pituitary-testicular (HPT) axis. In the hypothalamus, we observed an increase in Esr1 mRNA expression (0.5 and 5 mg). In the pituitary, we observed an increase in Gnrhr mRNA expression (50 mg), a reduction in Lhb mRNA expression (0.5 mg), and a reduction in Ar mRNA expression. In the testis, we observed an increase in Lhcgr mRNA expression (50 mg) and a reduction in Star mRNA expression (0.5 and 5 mg). The serum levels of LH (5 and 50 mg) and FSH (0.5 mg) were increased, while testosterone and estradiol were reduced. Puberty was delayed in all groups. Taken together, these results suggest that prepubertal consumption of relevant levels of soy isoflavones disrupts the HPT axis, causing hypergonadotropic hypogonadism and altered expression levels of key genes regulating the axis.
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Affiliation(s)
- Jeane Maria Oliveira
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
| | - Isabela Medeiros Oliveira
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
| | - Hanan Khaled Sleiman
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
| | - Gonzalo Ogliari Dal Forno
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
| | - Marco Aurelio Romano
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
| | - Renata Marino Romano
- Laboratory of Reproductive Toxicology, Department of Medicine, State University of Centro-Oeste (UNICENTRO), Rua Simeão Camargo Varela de Sa, 03, Zip-Code 85040-080, Parana, Brazil.
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Bendarska-Czerwińska A, Zmarzły N, Morawiec E, Panfil A, Bryś K, Czarniecka J, Ostenda A, Dziobek K, Sagan D, Boroń D, Michalski P, Pallazo-Michalska V, Grabarek BO. Endocrine disorders and fertility and pregnancy: An update. Front Endocrinol (Lausanne) 2022; 13:970439. [PMID: 36733805 PMCID: PMC9887196 DOI: 10.3389/fendo.2022.970439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023] Open
Abstract
It is estimated that more and more couples suffer from fertility and pregnancy maintenance disorders. It is associated with impaired androgen secretion, which is influenced by many factors, ranging from genetic to environmental. It is also important to remember that fertility disorders can also result from abnormal anatomy of the reproductive male and female organ (congenital uterine anomalies - septate, unicornuate, bicornuate uterus; acquired defects of the uterus structure - fibroids, polyps, hypertrophy), disturbed hormonal cycle and obstruction of the fallopian tubes resulting from the presence of adhesions due to inflammation, endometriosis, and surgery, abnormal rhythm of menstrual bleeding, the abnormal concentration of hormones. There are many relationships between the endocrine organs, leading to a chain reaction when one of them fails to function properly. Conditions in which the immune system is involved, including infections and autoimmune diseases, also affect fertility. The form of treatment depends on infertility duration and the patient's age. It includes ovulation stimulation with clomiphene citrate or gonadotropins, metformin use, and weight loss interventions. Since so many different factors affect fertility, it is important to correctly diagnose what is causing the problem and to modify the treatment regimen if necessary. This review describes disturbances in the hormone secretion of individual endocrine organs in the context of fertility and the maintenance of pregnancy.
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Affiliation(s)
- Anna Bendarska-Czerwińska
- Department of Molecular, Biology Gyncentrum Fertility Clinic, Katowice, Poland
- Faculty of Medicine, Academy of Silesia, Zabrze, Poland
- American Medical Clinic, Katowice, Poland
- *Correspondence: Anna Bendarska-Czerwińska, ; Nikola Zmarzły, ; Beniamin Oskar Grabarek,
| | - Nikola Zmarzły
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
- *Correspondence: Anna Bendarska-Czerwińska, ; Nikola Zmarzły, ; Beniamin Oskar Grabarek,
| | - Emilia Morawiec
- Department of Molecular, Biology Gyncentrum Fertility Clinic, Katowice, Poland
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
- Department of Microbiology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
| | - Agata Panfil
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
| | - Kamil Bryś
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
| | - Justyna Czarniecka
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
| | | | | | - Dorota Sagan
- Medical Center Dormed Medical SPA, Busko-Zdroj, Poland
| | - Dariusz Boroń
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
- Department of Gynaecology and Obstetrics, Faculty of Medicine, Academy of Silesia, Zabrze, Poland
- Department of Gynecology and Obstetrics with Gynecologic Oncology, Ludwik Rydygier Memorial Specialized Hospital, Kraków, Poland
- Department of Gynecology and Obstetrics, TOMMED Specjalisci od Zdrowia, Katowice, Poland
| | | | | | - Beniamin Oskar Grabarek
- Department of Molecular, Biology Gyncentrum Fertility Clinic, Katowice, Poland
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology, Academy of Silesia in Katowice, Zabrze, Poland
- Department of Gynaecology and Obstetrics, Faculty of Medicine, Academy of Silesia, Zabrze, Poland
- Department of Gynecology and Obstetrics with Gynecologic Oncology, Ludwik Rydygier Memorial Specialized Hospital, Kraków, Poland
- Department of Gynecology and Obstetrics, TOMMED Specjalisci od Zdrowia, Katowice, Poland
- *Correspondence: Anna Bendarska-Czerwińska, ; Nikola Zmarzły, ; Beniamin Oskar Grabarek,
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Sridevi V, Naveen P, Karnam VS, Reddy PR, Arifullah M. Beneficiary and Adverse Effects of Phytoestrogens: A Potential Constituent of Plant-based Diet. Curr Pharm Des 2021; 27:802-815. [PMID: 32942973 DOI: 10.2174/1381612826999200917154747] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 08/01/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Phytoestrogens are non-endocrine, non-steroidal secondary derivatives of plants and consumed through a plant-based diet also named as "dietary estrogens". The major sources of phytoestrogens are soy and soy-based foods, flaxseed, chickpeas, green beans, dairy products, etc. The dietary inclusion of phytoestrogen based foods plays a crucial role in the maintenance of metabolic syndrome cluster, including obesity, diabetes, blood pressure, cancer, inflammation, cardiovascular diseases, postmenopausal ailments and their complications. In recent days, phytoestrogens are the preferred molecules for hormone replacement therapy. On the other hand, they act as endocrine disruptors via estrogen receptor-mediated pathways. These effects are not restricted to adult males or females and identified even in development. OBJECTIVE Since phytoestrogenic occurrence is high at daily meals for most people worldwide, they focused to study for its beneficiary effects towards developing pharmaceutical drugs for treating various metabolic disorders by observing endocrine disruption. CONCLUSION The present review emphasizes the pros and cons of phytoestrogens on human health, which may help to direct the pharmaceutical industry to produce various phytoestrongen based drugs against various metabolic disorders.
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Affiliation(s)
- Vaadala Sridevi
- Department of Biochemistry, Yogi Vemana Universiti, Vemanapuram, Kadapa-516005, A.P, India
| | - Ponneri Naveen
- Department of Biochemistry, Yogi Vemana Universiti, Vemanapuram, Kadapa-516005, A.P, India
| | | | - Pamuru R Reddy
- Department of Biochemistry, Yogi Vemana Universiti, Vemanapuram, Kadapa-516005, A.P, India
| | - Mohammed Arifullah
- Institute of Food Security and Sustainable Agriculture (IFSSA) & Faculty of Agrobased Industry (FIAT), Universiti Malaysia Kelantan Campus Jeli, Locked Bag 100, Jeli 17600, Kelantan, Malaysia
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Benvenga S, Ferrari SM, Elia G, Ragusa F, Patrizio A, Paparo SR, Camastra S, Bonofiglio D, Antonelli A, Fallahi P. Nutraceuticals in Thyroidology: A Review of in Vitro, and in Vivo Animal Studies. Nutrients 2020; 12:nu12051337. [PMID: 32397091 PMCID: PMC7285044 DOI: 10.3390/nu12051337] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 02/06/2023] Open
Abstract
Nutraceuticals are defined as a food, or parts of a food, that provide medical or health benefits, including the prevention of different pathological conditions, and thyroid diseases, or the treatment of them. Nutraceuticals have a place in complementary medicines, being positioned in an area among food, food supplements, and pharmaceuticals. The market of certain nutraceuticals such as thyroid supplements has been growing in the last years. In addition, iodine is a fundamental micronutrient for thyroid function, but also other dietary components can have a key role in clinical thyroidology. Here, we have summarized the in vitro, and in vivo animal studies present in literature, focusing on the commonest nutraceuticals generally encountered in the clinical practice (such as carnitine, flavonoids, melatonin, omega-3, resveratrol, selenium, vitamins, zinc, and inositol), highlighting conflicting results. These experimental studies are expected to improve clinicians’ knowledge about the main supplements being used, in order to clarify the potential risks or side effects and support patients in their use.
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Affiliation(s)
- Salvatore Benvenga
- Master Program on Childhood, Adolescent and Women’s Endocrine Health, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina;
- Interdepartmental Program of Molecular & Clinical Endocrinology, and Women’s Endocrine Health, University Hospital, Policlinico Universitario G. Martino, 98125 Messina, Italy
| | - Silvia Martina Ferrari
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Giusy Elia
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Francesca Ragusa
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Armando Patrizio
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Sabrina Rosaria Paparo
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Stefania Camastra
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
| | - Daniela Bonofiglio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende (CS), Italy;
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (S.M.F.); (G.E.); (F.R.); (A.P.); (S.R.P.); (S.C.)
- Correspondence: ; Tel.: +39-050-992318
| | - Poupak Fallahi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy;
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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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Pistollato F, Masias M, Agudo P, Giampieri F, Battino M. Effects of phytochemicals on thyroid function and their possible role in thyroid disease. Ann N Y Acad Sci 2018; 1443:3-19. [DOI: 10.1111/nyas.13980] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/10/2018] [Accepted: 09/18/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Francesca Pistollato
- Center for Nutrition & Health, CITICANUniversidad Europea del Atlántico, Parque Científico y Tecnológico de Cantabria Santander Spain
| | - Manuel Masias
- Center for Nutrition & Health, CITICANUniversidad Europea del Atlántico, Parque Científico y Tecnológico de Cantabria Santander Spain
- Área de Nutrición y SaludUniversidad Internacional Iberoamericana (UNINI) Campeche Mexico
| | - Pablo Agudo
- Center for Nutrition & Health, CITICANUniversidad Europea del Atlántico, Parque Científico y Tecnológico de Cantabria Santander Spain
| | - Francesca Giampieri
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez, BiochimicaUniversità Politecnica delle Marche Ancona Italy
| | - Maurizio Battino
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez, BiochimicaUniversità Politecnica delle Marche Ancona 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, Dawson AJ, Rigby AS, Thatcher NJ, Kilpatrick ES, Atkin SL. The Effect of Phytoestrogen on Thyroid in Subclinical Hypothyroidism: Randomized, Double Blind, Crossover Study. Front Endocrinol (Lausanne) 2018; 9:531. [PMID: 30254609 PMCID: PMC6141627 DOI: 10.3389/fendo.2018.00531] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/22/2018] [Indexed: 12/13/2022] Open
Abstract
Objective: Soy phytoestrogens are suggested to impair thyroid function but the effects of pharmacological doses of soy phytoestrogens are unknown; therefore, this study was performed to determine the effect of high dose soy phytoestrogens (66 mg) on thyroid function in subclinical hypothyroidism. Design and setting: Randomized, double-blind, crossover study. Participants: Forty four patients with subclinical hypothyroidism. Intervention: Participants were randomly allocated to either 66 mg phytoestrogen with 30 g soy protein (active) or 0 mg phytoestrogen with 30 g soy protein (placebo) supplementation for 8 weeks, washed out for 8 weeks and then crossed over for another 8 week period. Main outcome measures: The primary outcome was progression to overt hypothyroidism with the secondary outcome measures were changes in thyroid function tests. Results: Two patients in this trial progressed into overt hypothyroidism after high dose phytoestrogen supplementation. TSH, free thyroxine and triiodothyronine did not differ between groups. Conclusion: A pharmacological dose of 66 mg of soy phytoestrogens did not increase the overt thyroid failure rate or alter thyroid function tests in patients with subclinical hypothyroidism.
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Affiliation(s)
- Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, United Kingdom
| | - Alison J Dawson
- Bradford Teaching Hospital NHS Foundation Trust, Bradford, United Kingdom
| | - Alan S Rigby
- Hull York Medical School, University of Hull, Hull, United Kingdom
| | | | - Eric S Kilpatrick
- Department of Clinical Chemistry, Sidra Medical and Research Center, Doha, Qatar
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Nakamura Y, Ohsawa I, Goto Y, Tsuji M, Oguchi T, Sato N, Kiuchi Y, Fukumura M, Inagaki M, Gotoh H. Soy isoflavones inducing overt hypothyroidism in a patient with chronic lymphocytic thyroiditis: a case report. J Med Case Rep 2017; 11:253. [PMID: 28870235 PMCID: PMC5583972 DOI: 10.1186/s13256-017-1418-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 08/04/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Many people have thyroid conditions that make them susceptible to hypothyroidism. If the foods they eat may interfere with the production of thyroid hormone, which can lead to development of serious hypothyroidism. The danger of health drinks should always be noted. CASE PRESENTATION A 72-year-old Japanese woman was previously diagnosed with chronic lymphocytic thyroiditis caused by a goiter and had an elevated thyroid-stimulating hormone level (6.56 μIU/ml), a high anti-thyroid peroxidase antibody level (>600 IU/ml), and a high antithyroglobulin level (> 4000 IU/ml) but normal levels of free triiodothyronine (3.08 pg/ml) and thyroxine (1.18 ng/ml). She presented to our hospital with sudden-onset general malaise, edema, and hoarseness with an elevated thyroid-stimulating hormone (373.3 μIU/ml) level and very low triiodothyronine (< 0.26 pg/ml) and thyroxine (0.10 ng/ml) levels. It was determined that for 6 months she had been consuming a processed, solved health drink ("barley young leaf") in amounts of 9 g/day, which included soybean and kale powder extract. Hypothyroidism might be affected by ingredients of health drinks. She discontinued consumption of the health drink immediately and began taking 12.5 μg of levothyroxine. The amount of levothyroxine was gradually increased every 3 days up to 100 μg. At day 61, her thyroid-stimulating hormone level had decreased (6.12 μIU/ml), her free triiodothyronine (2.69 pg/ml) and thyroxine (1.56 ng/ml) levels had increased, and her general condition was improved. Among risky foods lowering thyroid function, some experimental studies have revealed that isoflavones reduce thyroid function. Therefore, we measured the presence of isoflavones in the patient's frozen serum with thin-layer chromatography. After she discontinued consumption of the health drink, two components quickly disappeared, and the other three components gradually decreased. On the basis of developing solvent composition and a positive ferric chloride reaction in thin-layer chromatography experiment, the five ingredients that disappeared or decreased were highly suspected to be soy isoflavones. CONCLUSIONS This case emphasizes that consuming health drinks that include soy isoflavone powder extracts can lead to severe hypothyroidism.
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Affiliation(s)
- Yuya Nakamura
- Department of Internal Medicine, Saiyu Soka Hospital, 1-7-22 Matsubara, Soka City, Saitama 344-0041 Japan
- Department of Pharmacology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Isao Ohsawa
- Department of Internal Medicine, Saiyu Soka Hospital, 1-7-22 Matsubara, Soka City, Saitama 344-0041 Japan
| | - Yoshikazu Goto
- Department of Internal Medicine, Saiyu Soka Hospital, 1-7-22 Matsubara, Soka City, Saitama 344-0041 Japan
| | - Mayumi Tsuji
- Department of Pharmacology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Tatsunori Oguchi
- Department of Pharmacology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Naoki Sato
- Department of Pharmacology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, School of Medicine, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Motonori Fukumura
- Division of Natural Medicine and Therapeutics, Department of Clinical Pharmacy, School of Pharmacy, Showa University, Shinagawa-ku, Tokyo, Japan
| | - Masahiro Inagaki
- Department of Chemistry, College of Arts and Sciences, Showa University, Fujiyoshida City, Yamanashi Japan
| | - Hiromichi Gotoh
- Department of Internal Medicine, Saiyu Soka Hospital, 1-7-22 Matsubara, Soka City, Saitama 344-0041 Japan
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12
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Sathyapalan T, Aye M, Rigby AS, Fraser WD, Thatcher NJ, Kilpatrick ES, Atkin SL. Soy Reduces Bone Turnover Markers in Women During Early Menopause: A Randomized Controlled Trial. J Bone Miner Res 2017; 32:157-164. [PMID: 27465911 DOI: 10.1002/jbmr.2927] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/19/2016] [Accepted: 07/21/2016] [Indexed: 01/14/2023]
Abstract
Menopausal estrogen loss leads to an increased bone loss. Soy isoflavones can act as selective estrogen receptor modulators, their role in bone turnover is unclear. The primary outcome was assessing changes in plasma bone turnover markers. The secondary outcomes were assessing changes in cardiovascular risk markers including insulin resistance, blood pressure, and lipid profile. We performed a double-blind randomized parallel study in which 200 women within 2 years after the onset of their menopause were randomized to 15 g soy protein with 66 mg isoflavone (SPI) or 15 g soy protein alone (SP), daily for 6 months. There was a significant reduction in type I collagen crosslinked beta C-telopeptide (βCTX) (bone-resorption marker) with SPI supplementation (0.40 ± 0.17 versus 0.15 ± 0.09 μg/L; p < 0.01) compared to SP supplementation (0.35 ± 0.12 versus 0.35 ± 0.13 μg/L; p = 0.92) after 6 months. There was also a significant reduction in type I procollagen-N-propeptide (P1NP) (bone formation marker) with SPI supplementation (50.5 ± 25.0 versus 34.3 ± 17.6 μg/L; p < 0.01), more marked between 3 and 6 months. Following SPI there was a significant reduction in fasting glucose, fasting insulin, insulin resistance, and systolic blood pressure whereas no significant changes in these parameters was observed with SP. There were no significant changes in fasting lipid profile and diastolic blood pressure with either preparation. There was a significant increase in TSH and reduction in free thyroxine (p < 0.01) with SPI supplementation though free tri-iodothyronine was unchanged. In conclusion, soy protein with isoflavones may confer a beneficial effect on bone health, analogous to the mode of action of antiresorptive agents, albeit to a less magnitude. There was a significant improvement of cardiovascular risk markers, but a significant increase in TSH and reduction in free thyroxine after SPI supplementation indicating a detrimental effect on thyroid function. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK
| | - Mo Aye
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK
| | - Alan S Rigby
- Department of Academic Cardiology, University of Hull, Hull, UK
| | - William D Fraser
- Norwich Medical School, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, UK
| | | | - Eric S Kilpatrick
- Department of Clinical Chemistry, Sidra Medical and Research Center, Doha, Qatar
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13
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Garg S, Lule VK, Malik RK, Tomar SK. Soy Bioactive Components in Functional Perspective: A Review. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2016. [DOI: 10.1080/10942912.2015.1136936] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sheenam Garg
- Dairy Microbiology Division, National Dairy Research Institute, Karnal, Haryana, India
| | - Vaibhao Kisanrao Lule
- Dairy Microbiology Division, National Dairy Research Institute, Karnal, Haryana, India
| | - Ravinder Kumar Malik
- Dairy Microbiology Division, National Dairy Research Institute, Karnal, Haryana, India
| | - Sudhir Kumar Tomar
- Dairy Microbiology Division, National Dairy Research Institute, Karnal, Haryana, India
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14
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Tonstad S, Jaceldo-Siegl K, Messina M, Haddad E, Fraser GE. The association between soya consumption and serum thyroid-stimulating hormone concentrations in the Adventist Health Study-2. Public Health Nutr 2016; 19:1464-70. [PMID: 26450571 PMCID: PMC6061920 DOI: 10.1017/s1368980015002943] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 08/12/2015] [Accepted: 09/09/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Consumers may choose soya foods as healthful alternatives to animal products, but concern has arisen that eating large amounts of soya may adversely affect thyroid function. The present study aimed to examine the association between soya food consumption and serum thyroid-stimulating hormone (TSH) concentrations in North American churchgoers belonging to the Seventh-day Adventist denomination that encourages vegetarianism. DESIGN Participants completed six repeated 24 h dietary recalls within a 6-month period. Soya protein and soya isoflavone intakes were estimated, and their relationships to TSH concentrations measured at the end of 6 months were calculated using logistic regression analyses. SETTING Calibration sub-study of the Adventist Health Study-2. SUBJECTS Women (n 548) and men (n 295) who were not taking thyroid medications. RESULTS In men, age and urinary iodine concentrations were associated with high serum TSH concentrations (>5 mIU/l), while among women White ethnicity was associated with high TSH. In multivariate models adjusted for age, ethnicity and urinary iodine, soya isoflavone and protein intakes were not associated with high TSH in men. In women higher soya isoflavone consumption was associated with higher TSH, with an adjusted odds ratio (highest v. lowest quintile) of 4·17 (95 % CI 1·73, 10·06). Likewise, women with high consumption of soya protein (midpoint of highest quintile, 11 g/d) v. low consumption (midpoint of lowest quintile, 0 g/d) carried increased odds of high TSH (OR=2·69; 95 % CI 1·34, 5·30). CONCLUSIONS In women high consumption of soya was associated with elevated TSH concentrations. No associations between soya intake and TSH were found in men.
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Affiliation(s)
- Serena Tonstad
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, 24951 N Circle Drive, Nichol Hall Room 1519, Loma Linda, CA 92354, USA
| | - Karen Jaceldo-Siegl
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, 24951 N Circle Drive, Nichol Hall Room 1519, Loma Linda, CA 92354, USA
| | - Mark Messina
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, 24951 N Circle Drive, Nichol Hall Room 1519, Loma Linda, CA 92354, USA
| | - Ella Haddad
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, 24951 N Circle Drive, Nichol Hall Room 1519, Loma Linda, CA 92354, USA
| | - Gary E Fraser
- Department of Cardiology, School of Medicine, Loma Linda University, Loma Linda, CA, USA
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15
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Wu Y, Beland FA, Fang JL. Effect of triclosan, triclocarban, 2,2',4,4'-tetrabromodiphenyl ether, and bisphenol A on the iodide uptake, thyroid peroxidase activity, and expression of genes involved in thyroid hormone synthesis. Toxicol In Vitro 2016; 32:310-9. [PMID: 26827900 DOI: 10.1016/j.tiv.2016.01.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/19/2016] [Accepted: 01/27/2016] [Indexed: 12/24/2022]
Abstract
Triclosan, triclocarban, 2,2',4,4'-tetrabromodiphenyl ether (BDE-47), and bisphenol A (BPA) have been reported to disturb thyroid hormone (TH) homeostasis. We have examined the effects of these chemicals on sodium/iodide symporter (NIS)-mediated iodide uptake and the expression of genes involved in TH synthesis in rat thyroid follicular FRTL-5 cells, and on the activity of thyroid peroxidase (TPO) using rat thyroid microsomes. All four chemicals inhibited NIS-mediated iodide uptake in a concentration-dependent manner. A decrease in the iodide uptake was also observed in the absence of sodium iodide. Kinetic studies showed that all four chemicals were non-competitive inhibitors of NIS, with the order of Ki values being triclosan<triclocarban<BDE-47<BPA. The transcriptional expression of three genes involved in TH synthesis, Slc5a5, Tpo, and Tgo, and three thyroid transcription factor genes, Pax8, Foxe1, and Nkx2-1, was examined using quantitative real-time PCR. No significant changes in the expression of any genes were observed with triclosan or triclocarban. BDE-47 decreased the level of Tpo, while BPA altered the expression of all six genes. Triclosan and triclocarban inhibited the activity of TPO at 166 and >300 μM, respectively. Neither BDE-47 nor BPA affected TPO activity. In conclusion, triclosan, triclocarban, BDE-47, and BPA inhibited iodide uptake, but had differential effects on the expression of TH synthesis-related genes and the activity of TPO.
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Affiliation(s)
- Yuanfeng Wu
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Jia-Long Fang
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA.
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16
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Colucci R, Lotti F, Arunachalam M, Lotti T, Dragoni F, Benvenga S, Moretti S. Correlation of Serum Thyroid Hormones Autoantibodies with Self-Reported Exposure to Thyroid Disruptors in a Group of Nonsegmental Vitiligo Patients. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 69:181-190. [PMID: 25700983 DOI: 10.1007/s00244-015-0138-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 02/01/2015] [Indexed: 06/04/2023]
Abstract
Vitiligo is a pigmentary disorder strongly associated with autoimmune thyroid disorders (ATD). Thyroid hormones antibodies (THAb) directed toward thyroxine (T3) and triiodothyronine (T4) (T3- and T4-Ab) are rare in the general population but are increased in individuals wit ATD and extrathyroid autoimmune disorders. Because it is known that alcohol, smoke, iodine, and some thyroid disruptors can elicit the appearance of ATD, the aim of our study was to evaluate possible correlation between T3- and T4-Ab expression and past toxic exposures in vitiligo patients. Seventy vitiligo patients were examined and self-reported exposure to thyroid disruptors (4,4'-isopropylidenediphenol, perchlorates, polychlorinated biphenyls (PCBs), hexachlorobenzene, resorcinol, dichlorodiphenyltrichloroethane, alachlor/amitriole, nitrate, thiocyanate, soy isoflavones), iodine intake, smoke, and alcohol consumption were investigated through standardized questionnaires. Immunoglobulin (Ig)M-T3-Ab, IgG-T3-Ab, IgM-T4-Ab,and IgG-T4-Ab were dosed by a radioimmunoprecipitation technique. Seventy-seven (95.7 %) patients had at least one type of THAb. Most of them had contemporarily both T3- and T4-Ab (50/70). We found a significant association between PCBs and T4-IgG-Ab (P = 0.039) and between food intake containing nitrate, thiocyanate, and soy isoflavones with (IgM + IgG)-T3-Ab (P = 0.041). Our study underlines a possible influence of diet and environment in vitiligo patients in eliciting THAb. Therefore, in the event of a positive exposure to thyroid disruptors, an evaluation of thyroid function might be useful to early detect possible associated thyroid autoantibodies such as THAb.
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Affiliation(s)
- Roberta Colucci
- Section of Dermatology, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy,
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17
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Abstract
Industrial chemical contaminants have a variable impact on the hypothalamic-pituitary-thyroid axis, this depending both on their class and on confounding factors. Today, mounting evidence is pointing to the role of environmental factors, and specifically EDCs, in the current distressing upsurge in the incidence of thyroid disease. The unease is warranted. These substances, which are nowadays rife in our environments (including in foodstuffs), have been shown to interfere with thyroid hormone action, biosynthesis, and metabolism, resulting in disruption of tissue homeostasis and/or thyroid function. Importantly, based on the concept of the "nonmonotonic dose-response curve", the relationship between dose and effect has often been found to be nonlinear. Thus, small doses can induce unpredictable, adverse effects, one case being polychlorinated biphenyls (PCBs), of which congener(s) may centrally inhibit the hypothalamic-pituitary-thyroid axis, or dissociate thyroid receptor and selectively affect thyroid hormone signaling and action. This means that PCBs can act as agonists or antagonists at the receptor level, underlining the complexity of the interaction. This review highlights the multifold activity of chemicals demonstrated to cause thyroid disruption. It also represents a call to action among clinicians to undertake systematic monitoring of thyroid function and registering of the classes of EDs and additionally urges broader scientific collaborations to clarify these chemicals' molecular mechanisms of action, substances whose prevalence in our environments is disrupting not only the thyroid but all life on earth.
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Affiliation(s)
- Leonidas H Duntas
- Unit of Endocrinology, Metabolism and Diabetes, Evgenidion Hospital, University of Athens, Papadiamantopoulou 20, 11520, Athens, Greece,
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Naghibi SM, Ramezani M, Ayati N, Zakavi SR. Carum induced hypothyroidism: an interesting observation and an experiment. ACTA ACUST UNITED AC 2015; 23:5. [PMID: 25616491 PMCID: PMC4310175 DOI: 10.1186/s40199-015-0094-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 01/12/2015] [Indexed: 11/26/2022]
Abstract
Carum carvi is a widely available herb that has been used as a food additive and as a medication in traditional medicine for many years. Its potential biological effects include analgesic, anti-inflammatory, anti-anxiety and antispasmodic activities. We report a patient with papillary thyroid carcinoma who were under treatment with levothyroxine and experienced an elevated TSH level by ingestion of Carum carvi. TSH level was increased to 60.3 mIU/L with no change in levothyroxine dosage and decreased to normal range after discontinuation of the Carum carvi. Observing this dramatic change in TSH level by carum ingestion, carum carvi capsules was produced and one of the researcher tried the medication on herself with a dose of 40 mg/kg/day. She had a history of hypothyroidism and was taking 100 ugr/day of levothyroxine. TSH was markedly increased 2 weeks after ingestion of Carum carvi and returned to normal range 5 months after discontinuation of it. This case report shows the effect of consumption of Carum carvi in increasing TSH level in hypothyroid patients treating with levothyroxine. The exact mechanism of action of carum carvi remains unknown.
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Affiliation(s)
- Seyede Maryam Naghibi
- Nuclear Medicine Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Mohamad Ramezani
- Pharmaceutical Research Center, Buali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Narjess Ayati
- Nuclear Medicine Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Seyed Rasoul Zakavi
- Nuclear Medicine Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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