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Volz SN, Poulsen R, Hansen M, Holbech H. Bisphenol A alters retinal morphology, visually guided behavior, and thyroid hormone levels in zebrafish larvae. CHEMOSPHERE 2024; 348:140776. [PMID: 38000552 DOI: 10.1016/j.chemosphere.2023.140776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/12/2023] [Accepted: 11/19/2023] [Indexed: 11/26/2023]
Abstract
Bisphenols are industrial chemicals that are produced in large quantities and have been detected in all parts of the environment as well as in a multitude of different organisms including humans and fish. Several bisphenols, such as bisphenol A (BPA) and bisphenol F, have been shown to disrupt endocrine systems thereby affecting development and reproduction. While numerous studies investigated the effect of bisphenols on estrogen signaling, their impact on the thyroid hormone system (THS), which is vital for neurodevelopment including sensory development, has been explored to a lesser extent. The present work selected BPA as a representative for structurally similar bisphenols and assessed its impact on the THS as well as sensory development and function in zebrafish. To this end, zebrafish were exposed to BPA until up to 8 days post fertilization (dpf) and thyroid hormone levels, eye morphology, and sensory-mediated behaviors were analyzed. Zebrafish larvae exposed to BPA showed altered retinal layering, decreased motility across varying light conditions, and a loss of responsiveness to red light. Furthermore, whole-body levels of the thyroid hormones thyroxine (T4) and 3,5-diiodothyronine (3,5-T2) were significantly decreased in 5 dpf zebrafish. Taken together, BPA disrupted THS homeostasis and compromised visual development and function, which is pivotal for the survival of fish larvae. This work underlines the necessity for ongoing research on BPA and its numerous substitutes, particularly concerning their effects on the THS and neurodevelopment, to ensure a high level of protection for the environment and human health.
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Affiliation(s)
- Sina N Volz
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark.
| | - Rikke Poulsen
- Department of Environmental Science, University of Aarhus, Frederiksborgvej 399, 4000, Roskilde, Denmark.
| | - Martin Hansen
- Department of Environmental Science, University of Aarhus, Frederiksborgvej 399, 4000, Roskilde, Denmark.
| | - Henrik Holbech
- Department of Biology, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark.
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Razu MH, Hossain MI, Ahmed ZB, Bhowmik M, Hasan MKE, Kibria MK, Moni DA, Khan M. Study of thyroid function among COVID-19-affected and non-affected people during pre and post-vaccination. BMC Endocr Disord 2022; 22:309. [PMID: 36494801 PMCID: PMC9732974 DOI: 10.1186/s12902-022-01187-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/25/2022] [Indexed: 12/13/2022] Open
Abstract
The novel coronavirus COVID-19 has caused a global pandemic with many long-ranging effects on the physiological balance of the human body. The impact of COVID-19 on the thyroid axis remains uncertain. Our aim was to assess the long-term consequences of COVID-19 infection and its vaccination with thyroid hormones. Thirty laboratory-confirmed COVID-19-positive patients with no vaccination record, thirty COVID-19-negative patients with vaccination records, and ten healthy subjects were retrospectively, and cross-sectionally enrolled in this study. An ELISA assay was performed to evaluate thyroid function tests, including the total triiodothyronine (TT3), total thyroxine (TT4), and thyroid stimulating hormone (TSH). We found decreased levels of TT3, average or low plasma T4 levels, and standard or slightly decreased TSH levels in unvaccinated COVID-19-positive patients than in the healthy group, while the vaccinated COVID-19-negative group had normal thyroid hormone levels compared to controls. The correlation between TT3 and TSH levels gradually shifted from no association to a negative pattern in the unvaccinated COVID-19-positive group. Again, a highly significant negative correlation between TSH and TT3 was observed on days above 150, although a slight fluctuation was noted on day 90. This pilot study from Bangladesh shows that abnormalities in thyroid function can be observed during COVID-19 infection and after vaccination, which gradually recovers over time.
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Affiliation(s)
- Mamudul Hasan Razu
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Md. Iqbal Hossain
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Zabed Bin Ahmed
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Mousumi Bhowmik
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Md. Kazy Ebnul Hasan
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Md. Kaderi Kibria
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Dil Afroj Moni
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
| | - Mala Khan
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dhaka, Bangladesh
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Maiorano E, Calastri A, Robotti C, Cassaniti I, Baldanti F, Zuccaro V, Stellin E, Ferretti VV, Klersy C, Benazzo M. Clinical, virological and immunological evolution of the olfactory and gustatory dysfunction in COVID-19. Am J Otolaryngol 2022; 43:103170. [PMID: 34391165 PMCID: PMC8349441 DOI: 10.1016/j.amjoto.2021.103170] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/01/2021] [Indexed: 02/07/2023]
Abstract
Purpose New-onset olfactory and gustatory dysfunction (OGD) represents a well-acknowledged COVID-19 red flag. Nevertheless, its clinical, virological and serological features are still a matter of debate. Materials and methods For this cohort study, 170 consecutive subjects with new-onset OGD were consecutively recruited. Otolaryngological examination, OGD subjective grading, nasopharyngeal swabs (NS) for SARS-CoV-2 RNA detection and serum samples (SS) collection for SARS-CoV-2 IgG quantification were conducted at baseline and after one (T1), two (T2) and four weeks (T3). Results SARS-CoV-2 infection was confirmed in 79% of patients. Specifically, 43% of positive patients were detected only by SS analysis. The OGD was the only clinical complaint in 10% of cases. Concurrent sinonasal symptoms were reported by 45% of patients. Subjective improvement at T3 was reported by 97% of patients, with 40% recovering completely. Hormonal disorders and RNA detectability in NS were the only variables associated with OGD severity. Recovery rate was higher in case of seasonal influenza vaccination, lower in patients with systemic involvement and severe OGD. Not RNA levels nor IgG titers were correlated with recovery. Conclusion Clinical, virological and serological features of COVID-19 related OGD were monitored longitudinally, offering valuable hints for future research on the relationship between host characteristics and chemosensory dysfunctions.
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Possible Role of Endocannabinoids in Olfactory and Taste Dysfunctions in COVID-19 Patients and Volumetric Changes in the Brain. CHEMOSENS PERCEPT 2022; 15:135-144. [PMID: 36247977 PMCID: PMC9554384 DOI: 10.1007/s12078-022-09301-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 10/05/2022] [Indexed: 01/11/2023]
Abstract
Introduction COVID-19 infection develops neurologic symptoms such as smell and taste loss. We aimed to determine the volumetric changes in the brain and correlation of possible related biochemical parameters and endocannabinoid levels after COVID-19 recovery. Methods Brain magnetic resonance images of recovered COVID-19 patients and healthy volunteers, whose olfactory and gustatory scores were obtained through a questionnaire, were taken, and the volumes of the brain regions associated with taste and smell were measured by automatic and semiautomatic methods. Endocannabinoids (EC), which are critical in the olfactory system, and vitamin B12, zinc, iron, ferritin, thyroid-stimulating hormone (TSH), and thyroxine (T4) levels, which are reported to have possible roles in olfactory disorders, were measured in peripheral blood. Results Taste and smell disorder scores and EC levels were found to be higher in recovered COVID-19 patients compared to controls. EC levels were negatively correlated with bilateral entorhinal cortex (ENT) volumes in the COVID-19 group. Subgenual anterior cingulate cortex volumes showed correlations with gustatory complaints and ferritin in recovered COVID-19 patients. Conclusions The critical finding of our study is the high EC levels and negative correlation between EC levels and left ENT volumes in recovered COVID-19 patients. Implications It is possible that ECs are potential neuromodulators in many conditions leading to olfactory disorders, including COVID-19.
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Tsivgoulis G, Fragkou PC, Karofylakis E, Paneta M, Papathanasiou K, Palaiodimou L, Psarros C, Papathanasiou M, Lachanis S, Sfikakis PP, Tsiodras S. Hypothyroidism is associated with prolonged COVID-19-induced anosmia: a case-control study. J Neurol Neurosurg Psychiatry 2021; 92:jnnp-2021-326587. [PMID: 33879534 DOI: 10.1136/jnnp-2021-326587] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/25/2021] [Accepted: 03/31/2021] [Indexed: 11/04/2022]
Affiliation(s)
- Georgios Tsivgoulis
- Second Department of Neurology, National and Kapodistrian University of Athens School of Medicine, Athens, Attica, Greece
| | - Paraskevi C Fragkou
- Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Emmanouil Karofylakis
- Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Paneta
- Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Papathanasiou
- Second Department of Propedeutic Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Lina Palaiodimou
- Second Department of Neurology, National and Kapodistrian University of Athens School of Medicine, Athens, Attica, Greece
| | - Constantin Psarros
- Eginition Hospital, First Department of Psychiatry, National and Kapodistrian University of Athens, Athens, Attica, Greece
| | - Matilda Papathanasiou
- Second Department of Radiology, National and Kapodistrian University of Athens, Athens, Attica, Greece
| | | | - Petros P Sfikakis
- First Department of Propedeutic Internal Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, Attica, Greece
| | - Sotirios Tsiodras
- Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Does the radioactive iodine dose affect smell, taste sensation and nose function? The Journal of Laryngology & Otology 2021; 135:50-56. [PMID: 33478598 DOI: 10.1017/s0022215120002571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To detect whether the adverse effects of post-operative radioactive iodine therapy following differentiated thyroid cancer on smell, taste and nasal functions were associated with radioactive iodine dose. METHODS Fifty-one patients who had undergone total thyroidectomy because of differentiated thyroid cancer were divided into two groups depending on the post-operative radioactive iodine therapy dose: low dose group (50 mCi; 21 patients) and high dose group (100-150 mCi; 30 patients). The Sniffin' Sticks smell test, the Taste Strips test and the 22-item Sino-Nasal Outcome Test were performed on all patients one week before therapy, and at two months and one year following therapy. RESULTS Statistically significant differences were detected in the Sniffin' Sticks test results, total odour scores, total taste scores and Sino-Nasal Outcome Test results between the assessment time points. There was no statistically significant difference between the low and high dose groups in terms of odour, taste or Sino-Nasal Outcome Test scores either before or after therapy. CONCLUSION Radioactive iodine therapy has some short- and long-term adverse effects on nasal functions and taste and odour sensations, which affect quality of life. These effects are not dose-dependent.
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Limphaibool N, Iwanowski P, Kozubski W, Swidziński T, Frankowska A, Kamińska I, Linkowska-Swidzińska K, Sekula A, Swidziński P, Maciejewska-Szaniec Z, Maciejewska B. Subjective and Objective Assessments of Post-traumatic Olfactory Dysfunction. Front Neurol 2020; 11:970. [PMID: 32982956 PMCID: PMC7479332 DOI: 10.3389/fneur.2020.00970] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 07/24/2020] [Indexed: 12/24/2022] Open
Abstract
Introduction: Traumatic brain injuries are the most common cause of olfactory dysfunction. Deficits in olfaction may be conductive or neurosensory in nature, with varying degrees of impairment resulting in a diminished quality of life and an increased risk for personal injury among patients. The aim of this research is to evaluate the results of the subjective and objective quantitative examinations of olfactory function in a group of patients with post-traumatic anosmia in order to predict its value in identifying olfactory deficits in clinical practice. Materials and Methods: The present study included 38 patients who reported anosmia or hyposmia caused by a traumatic head injury, and a group of 31 age- and sex-matched controls without olfactory dysfunction or prior history of head injury. The comparison of odor perception and identification of two oils (mint and anise) was assessed with the use of blast olfactometry with cortical olfactory event-related potentials. Results: Subjective olfactory tests revealed anosmia or hyposmia in 94% of patients with head injury-related olfactory dysfunction. Objective tests revealed olfactory event-related potentials from cranial nerve I produced by the stimulation with both mint and anise in 20 patients (52.6%). Olfactory event-related potentials from cranial nerve V produced by the stimulation with mint were registered in 26 patients (68.4%). The lack of any responses, from both cranial nerve I and V, was found in 12 patients (32% of cases). Conclusions: Findings from our study indicate the application of both subjective and objective examinations in the evaluation of patients with olfactory impairment. In the diagnosis of post-traumatic anosmia or hyposmia, objective examinations are particularly useful when the patients' level of cognition may be impaired or when subjects may be exaggerating their olfactory defects for a secondary gain. The diagnosis of damage to the olfactory system, specifically in the receptive part of the olfactory pathway, can be established in patients who showed reduced amplitudes or absent cortical responses in addition to absent odor identification and perception threshold in the subjective examination.
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Affiliation(s)
| | - Piotr Iwanowski
- Department of Neurology, Poznan University of Medical Sciences, Poznań, Poland
| | - Wojciech Kozubski
- Department of Neurology, Poznan University of Medical Sciences, Poznań, Poland
| | - Teodor Swidziński
- Department of Biophysics, Poznan University of Medical Sciences, Poznań, Poland
| | - Anna Frankowska
- Department of Medical Law, Organization and Management in Healthcare, Poznań University of Medical Sciences, Poznań, Poland
| | - Ilona Kamińska
- Department of Phoniatrics and Audiology, Poznan University of Medical Sciences, Poznań, Poland
| | | | - Alicja Sekula
- Department of Phoniatrics and Audiology, Poznan University of Medical Sciences, Poznań, Poland
| | - Piotr Swidziński
- Department of Phoniatrics and Audiology, Poznan University of Medical Sciences, Poznań, Poland
| | - Zofia Maciejewska-Szaniec
- Department of Temporomandibular Joint Disorders, Poznan University of Medical Sciences, Poznan, Poland
| | - Barbara Maciejewska
- Department of Phoniatrics and Audiology, Poznan University of Medical Sciences, Poznań, Poland
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