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Tani H, Hirashio S, Tsuda A, Tachiyama Y, Hara S, Masaki T. Renal dysfunction caused by severe hypothyroidism diagnosed by renal biopsy: a case report. CEN Case Rep 2024:10.1007/s13730-024-00853-7. [PMID: 38416371 DOI: 10.1007/s13730-024-00853-7] [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: 07/24/2023] [Accepted: 01/17/2024] [Indexed: 02/29/2024] Open
Abstract
There is a close relationship between thyroid dysfunction and renal dysfunction. However, thyroid dysfunction can unfortunately result in inaccurate measurements of serum creatinine and cystatin C levels. The chronic decrease in cardiac output due to hypothyroidism can reduce renal plasma flow (RPF) resulting in renal dysfunction. We report the case of a 36-year-old male in whom renal dysfunction detected during a company health check-up was found to be caused by severe hypothyroidism. His serum creatinine levels showed poor results, but serum cystatin C levels were within the normal range. The physician thus prioritized serum cystatin C for assessing the patient's renal function, and concluded that his renal function was normal. He subsequently visited our hospital, aged 36 years, for a comprehensive examination. His serum creatinine level was 1.88 mg/dL and his serum cystatin C level was 0.75 mg/dL, indicating an unusual discrepancy between the two measurements. The patient also presented with fatigue, suggesting hypothyroidism, and we therefore evaluated his thyroid function. His free thyroxine level was below the sensitivity of the assay, while his thyroid-stimulating hormone level was > 100 μIU/mL. A renal biopsy was performed to further explore the underlying cause of his renal dysfunction, which suggested that reduced RPF could be the leading cause of his renal ischemia, with no indications of chronic glomerulonephritis or other abnormalities. His hypothyroidism and renal function improved after thyroid hormone replacement therapy. Given the limited reports of renal biopsy tissue examination during the acute phase of hypothyroidism, the current case provides important information regarding the diagnosis of renal dysfunction in patients with hypothyroidism.
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Affiliation(s)
- Hiroki Tani
- Department of Nephrology, National Hospital Organization Hiroshima-Nishi Medical Center, 4‑1‑1 Kuba, Ootake, Hiroshima, 739‑0696, Japan
| | - Shuma Hirashio
- Department of Nephrology, National Hospital Organization Hiroshima-Nishi Medical Center, 4‑1‑1 Kuba, Ootake, Hiroshima, 739‑0696, Japan
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Akihiro Tsuda
- Department of Metabolism, Endocrinology and Molecular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka 1-4-3, Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
| | - Yoshiro Tachiyama
- Department of Diagnostic Pathology, National Hospital Organization Hiroshima-Nishi Medical Center, 4‑1‑1 Kuba, Ootake, Hiroshima, 739‑0696, Japan
| | - Shigeo Hara
- Department of Diagnostic Pathology, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
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Mancini A, Silvestrini A, Marcheggiani F, Capobianco E, Silvestri S, Lembo E, Orlando P, Beccia F, Nicolotti N, Panocchia N, Tiano L. Non-Thyroidal Illness in Chronic Renal Failure: Triiodothyronine Levels and Modulation of Extra-Cellular Superoxide Dismutase (ec-SOD). Antioxidants (Basel) 2024; 13:126. [PMID: 38275651 PMCID: PMC10812992 DOI: 10.3390/antiox13010126] [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: 12/21/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Oxidative stress (OS) is implicated in several chronic diseases. Extra-cellular superoxide dismutase (ec-SOD) catalyses the dismutation of superoxide anions with a protective role in endothelial cells. In chronic kidney disease (CKD), OS and thyroid dysfunction (low fT3 syndrome) are frequently present, but their relationship has not yet been investigated. This cohort study evaluated ec-SOD activity in CKD patients during haemodialysis, divided into "acute haemodialytic patients" (AH, 1-3 months of treatment) and "chronic haemodialytic patients" (CH, treated for a longer period). We also evaluated plasmatic total antioxidant capacity (TAC) and its relationships with thyroid hormones. Two basal samples ("basal 1", obtained 3 days after the last dialysis; and "basal 2", obtained 2 days after the last dialysis) were collected. On the same day of basal 2, a sample was collected 5 and 10 min after the standard heparin dose and at the end of the procedure. The ec-SOD values were significantly higher in CH vs. AH in all determinations. Moreover, the same patients had lower TAC values. When the CH patients were divided into two subgroups according to fT3 levels (normal or low), we found significantly lower ec-SOD values in the group with low fT3 in the basal, 5, and 10 min samples. A significant correlation was also observed between fT3 and ec-SOD in the basal 1 samples. These data, confirming OS and low fT3 syndrome in patients with CKD, suggest that low fT3 concentrations can influence ec-SOD activity and could therefore potentially contribute to endothelial oxidative damage in these patients.
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Affiliation(s)
- Antonio Mancini
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Andrea Silvestrini
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Fabio Marcheggiani
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Emmanuele Capobianco
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Sonia Silvestri
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Erminia Lembo
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Patrick Orlando
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Flavia Beccia
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Nicola Nicolotti
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Nicola Panocchia
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168 Rome, Italy
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy
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Yuasa R, Muramatsu M, Saito A, Osuka H, Morita T, Hamasaki Y, Sakai K. Urinary excretion of thyroid hormone in CKD patients: a proof-of-concept of nephrogenic hypothyroidism. Ren Fail 2023; 45:2293224. [PMID: 38087476 PMCID: PMC11001357 DOI: 10.1080/0886022x.2023.2293224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 12/04/2023] [Indexed: 12/18/2023] Open
Abstract
PURPOSE Patients with chronic kidney disease (CKD) complicated by hypothyroidism exhibit a higher prevalence of urine protein than that in the general population. This study was aimed at investigating thyroid hormones and thyroid hormone-binding proteins excreted in urine to elucidate the urine protein-associated underlying mechanisms of hypothyroidism. METHODS Between November 2016 and August 2018, thyroid function (serum free T3 [sFT3], free T4 [sFT4], and thyroid-stimulating hormone [sTSH]), kidney function (estimated glomerular filtration rate [eGFR]), thyroid antibodies and albumin (Alb) were evaluated in 99 Japanese CKD patients with proteinuria at our outpatient clinic. A urine examination was also performed to assess the following parameters: total T3, total T4, TSH, Alb, preAlb, thyroid-binding globulin, and protein. RESULTS The median patient age at study recruitment was 60 years; 50 patients (50.5%) were male. The median eGFR and Alb level were 20.3 ml/min/1.73 m2 and 3.8 g/dL, respectively. 21 patients (21.2%) were diagnosed with nephrotic syndrome (NS). The median sFT3, sFT4, and sTSH levels were within normal limits. Approximately 70% of the patients had thyroid dysfunction and 51.5% had overt or subclinical hypothyroidism without predominantly antibody positive. Regarding NS and non-NS patients, age and Alb were significantly different between these groups, while sex and eGFR were not significant, but the urinary T4 and TSH levels were higher in the NS group; thus, more severe hypothyroid. CONCLUSION We found a significant association between hypothyroidism and NS regardless of sex and antibodies. Urinary loss of thyroid hormones must be a factor influencing hypothyroidism independent of autoimmunity.
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Affiliation(s)
- Rena Yuasa
- Department of Clinical Medicine, Toho University Faculty of Nursing, Tokyo, Japan
- Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
| | - Masaki Muramatsu
- Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
| | - Akinobu Saito
- Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
| | - Hiroyoshi Osuka
- Department of Clinical Laboratory, Toho University Omori Medical Center, Tokyo, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University Faculty of Medicine, Tokyo, Japan
| | - Yuko Hamasaki
- Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
| | - Ken Sakai
- Department of Nephrology, Toho University Faculty of Medicine, Tokyo, Japan
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Soylu H, Ersoy R, Keske PB, Tunçay ME, Ateş C, Çakır B, Yalçın B. The diurnal change of thyroid-stimulating hormone and the effect of this change on thyroid functions in patients with chronic kidney disease. Endocrine 2023; 82:580-585. [PMID: 37490264 DOI: 10.1007/s12020-023-03446-z] [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: 01/22/2023] [Accepted: 07/01/2023] [Indexed: 07/26/2023]
Abstract
PURPOSE Thyroid-stimulating hormone (TSH) has a pulsatile and circadian rhythm in healthy individuals. We aimed to evaluate the diurnal changes of free thyroid hormones and serum TSH levels in patients with end-stage renal failure (ESRF) whose thyroidal functions are at normal ranges. METHODS Thirty hemodialysis patients with chronic renal failure and without a known thyroidal disease who are over 18 and 35 healthy individuals were included. The serum TSH, free T3, and free T4 levels were examined among the patient and control group which were taken at 8:00 a.m., 4:00 p.m., and 0:00 a.m. RESULTS Twenty-two (73.3%) patients were male, and the mean age of the patient group was 64 (sd = 14.45 years). Seventeen (48.6%) of the control group were female, and the mean age was 31.9 (sd = 6.4 years). Serum free T3 levels, measured at three different time points (8:00 a.m., 4:00 p.m., and 0:00 a.m.), were significantly lower in the patient group than in the control group and serum free T4 levels were measured at three different time points (8:00 am, 4:00 p.m., and 0:00 a.m.) were significantly higher in the patient group than in the control group. Serum TSH levels were higher in the patient group than in the control group at 08:00, and were lower at 24:00 (p < 0.001). The nocturnal increase of serum TSH level under 0.525 suggested diurnal rhythm disruption with 83% sensitivity and 87% specificity. CONCLUSION The nocturnal serum TSH increase is not seen in ESRF patients who did not have a thyroid disease. We think that not observing a nocturnal TSH increase could be an early indication of the sick euthyroid syndrome.
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Affiliation(s)
- Hüseyin Soylu
- Batman Training and Research Hospital, Batman, Turkey.
| | - Reyhan Ersoy
- Ankara Yıldırım Beyazıt University, Medicine Faculty, Ankara, Turkey
| | - Pelin Bal Keske
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Education Research Hospital, Department of Intensive Care, Istanbul, Turkey
| | | | - Can Ateş
- Aksaray University, Medicine Faculty Department of Biostatistics, Aksaray, Turkey
| | - Bekir Çakır
- Ankara Yıldırım Beyazıt University, Medicine Faculty, Ankara, Turkey
| | - Bülent Yalçın
- Ankara Yıldırım Beyazıt University, Medicine Faculty, Ankara, Turkey
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5
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Li S, Zeng M. J-shaped association of free triiodothyronine to free thyroxine ratio with 5-year mortality among patients with chronic kidney disease: a prospective cohort study. Int Urol Nephrol 2023; 55:2567-2578. [PMID: 36917414 DOI: 10.1007/s11255-023-03548-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/04/2023] [Indexed: 03/16/2023]
Abstract
PURPOSE To investigate the association of free triiodothyronine to free thyroxine (FT3/FT4) ratio with 5-year mortality in patients with chronic kidney disease (CKD) using data from the National Health and Nutrition Examination Survey (NHANES) through 2001-2002 and 2007-2012. METHODS Two thousand four hundred twenty-four patients with CKD stage 1-5 were included. Patients' baseline characteristics were collected. Cox proportional hazards models were used to investigate the association of FT3/FT4 ratio with 5-year all-cause and cardiovascular mortality. Subgroup analysis was performed. RESULTS Within 5 years of follow-up duration, 425 (17.53%) deaths were recorded, and 154 patients died from cardiovascular disease. A J-shaped association between FT3/FT4 ratio and 5-year mortality was observed. After fully adjustment, the elevated FT3/FT4 ratio was significantly associated with a decreased 5-year all-cause mortality risk (HR: 0.79, 95% CI 0.63-0.99) among patients with CKD stage 1-5 when FT3/FT4 ratio < 4.71, and is significantly associated with an increased 5-year all-cause mortality risk in CKD patients with advanced CKD stages or low UACR when FT3/FT4 ratio ≥ 4.71 (HR: 2.74, 95% CI 1.20-6.29; HR: 3.09, 95% CI 1.12-8.57, respectively). The elevated FT3/FT4 ratio also showed a J-shaped association with the 5-year cardiovascular mortality which disappears after fully adjustment. CONCLUSION The FT3/FT4 ratio is closely associated with 5-year mortality risk among patients with CKD, indicating a potential role of FT3/FT4 ratio as a biomarker for mortality prediction in CKD patients.
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Affiliation(s)
- Siyao Li
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, 410011, China
| | - Mengru Zeng
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, 410011, China.
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Kidney disease and thyroid dysfunction: the chicken or egg problem. Pediatr Nephrol 2022; 37:3031-3042. [PMID: 35737115 DOI: 10.1007/s00467-022-05640-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/04/2022] [Accepted: 05/19/2022] [Indexed: 01/10/2023]
Abstract
Patients with non-dialysis-dependant chronic kidney disease (NDD-CKD) and dialysis-dependant chronic kidney disease (DD-CKD) frequently also suffer from thyroid disorders, especially hypothyroidism which is found two to five times more often among them compared to the general population. Emerging research has illustrated the potential prognostic implications of this association as NDD-CKD and DD-CKD patients with hypothyroidism have been shown to have higher mortality rates, and treatment of subclinical hypothyroidism in NDD-CKD patients has been reported to attenuate the decline of glomerular filtration rate over time. This review illustrates the bidirectional, multi-layered interplay between the kidneys and the thyroid gland explaining how pathologies in one organ will affect the other and vice versa. Additionally, it outlines the impact of thyroid disorders on routine parameters of kidney function (especially serum creatinine and serum cystatin C) that nephrologists should be aware of in their clinical practice. Lastly, it summarizes the emerging evidence from clinical studies on how treatment of subclinical hypothyroidism in NDD-CKD and DD-CKD patients may potentially have beneficial effects on kidney function as well as mortality. While most of the research in this area has been performed on adult patients, we specifically discuss what is currently known about thyroid dysfunctions in paediatric CKD patients as well and provide management suggestions. The evidence accumulated so far clearly indicates that further, prospective studies with meticulous methodology are warranted to refine our understanding of thyroid disorders in paediatric and adult CKD patients and establish optimal treatment pathways.
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Bertani L, Tricò D. Editorial: serum triiodothyronine-to-thyroxine (T3/T4) ratio as biomarker of response in IBD - an open issue. Aliment Pharmacol Ther 2022; 56:903-904. [PMID: 35934852 DOI: 10.1111/apt.17136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Lorenzo Bertani
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.,Department of General Surgery, Tuscany North-West ASL, Pontedera Hospital, Pontedera, Italy
| | - Domenico Tricò
- Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy.,Sant'Anna School of Advanced Studies, Institute of Life Sciences, Pisa, Italy
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Lin S, Chanchlani N, Carbery I, Janjua M, Nice R, McDonald TJ, Bewshea C, Kennedy NA, Ahmad T, Selinger CP, Goodhand JR. Understanding anti-TNF treatment failure: does serum triiodothyronine-to-thyroxine (T3/T4) ratio predict therapeutic outcome to anti-TNF therapies in biologic-naïve patients with active luminal Crohn's disease? Aliment Pharmacol Ther 2022; 56:783-793. [PMID: 35768996 PMCID: PMC9540440 DOI: 10.1111/apt.17089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/10/2022] [Accepted: 06/02/2022] [Indexed: 12/18/2022]
Abstract
BACKGROUND During illness, adaptations of the hypothalamic-pituitary-thyroid axis reduce energy expenditure, protein catabolism and modulate immune responses to promote survival. Lower serum free triiodothyronine-to-thyroxine (fT3/fT4) ratio has been linked to non-response to treatment in a range of diseases, including in biologic-treated patients with inflammatory bowel disease. AIM To assess whether baseline serum fT3/fT4 ratio predicted primary non-response (PNR) and non-remission to infliximab and adalimumab in patients with Crohn's disease METHODS: Thyroid function tests were undertaken in stored serum from biologic-naïve adult patients with active luminal Crohn's disease immediately prior to treatment with infliximab (427 originator; 122 biosimilar) or adalimumab (448) in the Personalised Anti-TNF Therapy in Crohn's Disease study (PANTS). RESULTS Baseline median [IQR] fT3/fT4 ratios were lower in women than men (0.30 [0.27-0.34] vs 0.32 [0.28-0.36], p < 0.001), in patients with more severe inflammatory disease, and in patients receiving corticosteroids (0.28 [0.25-0.33] vs. 0.32 [0.29-0.36], p < 0.001). Multivariable logistic regression analysis demonstrated that fT3/fT4 ratio was independently associated with PNR at week 14 (odds ratio [OR] 0.51, 95% confidence interval [CI] 0.31-0.85, p = 0.009), but not non-remission or changes in faecal calprotectin concentrations at week 54. The optimal threshold to determine PNR was 0.31 (area under the curve 0.57 [95% CI 0.54-0.61], sensitivity 0.62 [95% CI 0.41-0.74], and specificity 0.53 [95% CI 0.42-0.73]). CONCLUSIONS Lower baseline serum fT3/fT4 ratio was associated with female sex, corticosteroid use and disease activity. It predicted PNR to anti-TNF treatment at week 14, but not non-remission at week 54.
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Affiliation(s)
- Simeng Lin
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Neil Chanchlani
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Isabel Carbery
- Leeds Gastroenterology Institute, Leeds Teaching Hospitals NHS TrustLeedsUK,The Leeds Institute of Research at St James'University of LeedsLeedsUK
| | - Malik Janjua
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Rachel Nice
- Biochemistry, Exeter Clinical Laboratory InternationalRoyal Devon and Exeter NHS Foundation TrustExeterUK
| | - Timothy J. McDonald
- Biochemistry, Exeter Clinical Laboratory InternationalRoyal Devon and Exeter NHS Foundation TrustExeterUK
| | - Claire Bewshea
- Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Nicholas A. Kennedy
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Tariq Ahmad
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
| | - Christian P. Selinger
- Leeds Gastroenterology Institute, Leeds Teaching Hospitals NHS TrustLeedsUK,The Leeds Institute of Research at St James'University of LeedsLeedsUK
| | - James R. Goodhand
- GastroenterologyRoyal Devon and Exeter NHS Foundation TrustExeterUK,Exeter Inflammatory Bowel Disease and Pharmacogenetics Research GroupUniversity of ExeterExeterUK
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Shahreki E, Kaykhaei MA, Mosallanezhad Z, Adineh Z, Mokhtari AM, Mohammadi M, Hosseini R, Bazi A. Effects of Selenium and/or N-Acetyl-Cysteine Supplementation on Nonthyroidal Illness Syndrome in Hemodialysis Patients: A Factorial Randomized Controlled Trial. Pharmacology 2022; 107:480-485. [PMID: 35691282 DOI: 10.1159/000525094] [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: 12/30/2021] [Accepted: 05/10/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Nonthyroidal illness syndrome (NTIS) is common in hemodialysis patients (HPs). However, limited clinical trials have been conducted in this field. Therefore, the aim of this study was to investigate the effect of Se and/or N-acetyl-cysteine (NAC) on NTIS parameters in HPs. METHODS In this factorial randomized controlled trial, 68 HPs were divided into four groups: group A received placebo of Se and NAC, group B received 600 μg per day of NAC and placebo of Se, group C received 200 μg of Se per day and placebo of NAC and group D received 200 μg of selenium and 600 μg of NAC per day for 12 weeks. Blood samples were taken at baseline and after 12 weeks to assess free tri-iodothyronine (FT3), free thyroxine (FT4), thyroid stimulating hormone (TSH), and reverse T3 (rT3) concentrations. RESULTS Our finding demonstrated that rT3 levels were decreased in B, C, and D groups and increased nearly to baseline levels in the A group after 12 weeks, with a marked difference between the groups (p < 0.001) based on ANOVA. Although there were no significant differences in FT3 (p = 0.39), FT4 (p = 0.76), and TSH (p = 0.71) between the groups at the end of the trial. CONCLUSION This trial showed that Se and/or NAC exert beneficial effects on rT3 levels in HPs. However, long-term clinical trials with a larger sample size using more appropriate biomarkers are recommended to evaluate the efficacy and safety of Se and/or NAC in HPs.
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Affiliation(s)
- Elham Shahreki
- Department of Nephrology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mahmoud Ali Kaykhaei
- Genetics of Noncomunicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Zahra Mosallanezhad
- Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Adineh
- Department of Internal Medicine, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ali Mohammad Mokhtari
- Department of Epidemiology and Biostatistics, School of Health, Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Mahdi Mohammadi
- Department of Biostatistics and Epidemiology, School of Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Razieh Hosseini
- Nutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Aliyeh Bazi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Zabol University of Medical Sciences, Zabol, Iran
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Pontes CDN, Rocha JLGD, Medeiros JMR, Santos BFBD, Silva PHMD, Medeiros JMR, Costa GG, Silva IMS, Gomes DL, Santos FM, Libonati RMF. Low T3 syndrome as a prognostic factor in patients in the intensive care unit: an observational cohort study. Rev Bras Ter Intensiva 2022; 34:262-271. [PMID: 35946657 DOI: 10.5935/0103-507x.20220024-pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/02/2022] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To assess euthyroid sick syndrome as a prognostic factor in patients in the intensive care unit; to detect factors that may affect mortality; and to develop an equation to calculate death probability. METHODS This was a longitudinal, observational, nonconcurrent cohort study developed in the intensive care unit of Fundação Santa Casa de Misericórdia do Pará. One hundred adults with no prior documented endocrinopathy were submitted to a 20mL blood sample collection for the measurement of thyroid stimulating hormone, free tetraiodothyronine, free triiodothyronine and reverse triiodothyronine. RESULTS Most patients were female, aged 20 to 29 years. Most patients who died were older (median age of 48 years), and euthyroid sick syndrome was present in 97.5% of them. Euthyroid sick syndrome was related to death, comorbidities, age and length of stay in the intensive care unit (median of 7.5 days).There was an association between lower thyroid stimulating hormone and death. Patients with free triiodothyronine levels below 2.9pg/mL were more likely to die; reverse triiodothyronine rates were above 0.2ng/mL in those who died. Free triiodothyronine had greater sensitivity and accuracy, and reverse triiodothyronine had greater specificity to predict mortality. Based on the results and cutoff points, a multiple logistic regression formula was developed to calculate the probability of death. CONCLUSION The main limitation of this study is the fact that it was conducted in a reference hospital for maternal and child care; therefore, there was a greater number of female patients and, consequently, a sampling bias existed. However, opportune measurement of free and reverse triiodothyronine levels in critical patients and application of the proposed equation are suggested.
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Affiliation(s)
| | | | | | | | | | | | - Gabriela Góes Costa
- Instituto de Ciências da Saúde, Universidade Federal do Pará - Belém (PA), Brasil
| | | | - Daniel Libonati Gomes
- Instituto de Letras e Comunicação, Universidade Federal do Pará - Belém (PA), Brasil
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Wang J, Cao J, Zhu J, Liu N. Non-Thyroidal Illness Syndrome-Associated Multiorgan Dysfunction After Surgical Repair of Type A Aortic Dissection. J Cardiothorac Vasc Anesth 2021; 36:870-879. [PMID: 34507886 DOI: 10.1053/j.jvca.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/23/2021] [Accepted: 08/02/2021] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The purpose of this cohort study was to investigate the relationship between non-thyroidal illness syndrome (NTIS) and severe multiorgan dysfunction, measured by Sequential Organ Failure Assessment score ≥11, after surgical repair of type A aortic dissection (TAAD). SETTING An observational study. PARTICIPANTS The present study included 310 patients with TAAD surgically repaired between January 2019 and December 2020 in Beijing Anzhen Hospital. INTERVENTIONS Patients after surgical repair after TAAD. MEASUREMENTS AND MAIN RESULTS Among a total of 310 patients with TAAD undergoing surgical repair included in this study, 132 (42.6%) experienced surgery-associated NTIS. Severe multiorgan dysfunction was experienced more often in patients with NTIS (27.3% v 11.2%, p < 0.0001). Multivariate analysis demonstrated NTIS was associated closely with an increased risk of severe multiorgan dysfunction (odds ratio [OR] = 2.54, 95% CI = 1.39-4.64 p = 0.002), which predicted an in-hospital death rate of 95%. Non-thyroidal illness syndrome also was related with in-hospital major adverse cardiovascular and cerebral events (OR = 2.12, 95% CI = 1.30-3.46 p = 0.003), acute kidney injury (OR = 3.17, 95% CI = 1.17-8.47 p = 0.023), and postoperative pulmonary complications (OR = 2.32, 95% CI = 1.34-4.03 p = 0.003). However, hepatic inadequacy was comparable in the NTIS and control groups. CONCLUSIONS Non-thyroidal illness syndrome was associated closely with multiorgan dysfunction after surgical repair of TAAD, which may be correlated further with an increased incidence of in-hospital mortality and complications.
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Affiliation(s)
- Jiayang Wang
- Department of Cardiac Surgery, Beijing An Zhen Hospital Capital Medical University, Beijing, China; Center for Cardiac Intensive Care, Beijing An Zhen Hospital Capital Medical University, Beijing, China; Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Disease, Beijing Key Laboratory of Precision Medicine of Coronary Atherosclerotic Disease, Clinical Center for Coronary Heart Disease, Capital Medical University, Beijing, China
| | - Jian Cao
- Department of Cardiac Surgery, Beijing An Zhen Hospital Capital Medical University, Beijing, China
| | - Junming Zhu
- Department of Cardiac Surgery, Beijing An Zhen Hospital Capital Medical University, Beijing, China
| | - Nan Liu
- Center for Cardiac Intensive Care, Beijing An Zhen Hospital Capital Medical University, Beijing, China.
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Schultheiss UT, Steinbrenner I, Nauck M, Schneider MP, Kotsis F, Baid-Agrawal S, Schaeffner E, Eckardt KU, Köttgen A, Sekula P. Thyroid function, renal events and mortality in chronic kidney disease patients: the German Chronic Kidney Disease study. Clin Kidney J 2021; 14:959-968. [PMID: 34349984 PMCID: PMC8328092 DOI: 10.1093/ckj/sfaa052] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 03/18/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hypothyroidism and low free triiodothyronine (FT3) syndrome [low FT3 levels with normal thyroid-stimulating hormone (TSH)] have been associated with reduced kidney function cross-sectionally in chronic kidney disease (CKD) patients with severely reduced estimated glomerular filtration rate (eGFR) or end-stage kidney disease (ESKD). Results on the prospective effects of impaired thyroid function on renal events and mortality for patients with severely reduced eGFR or from population-based cohorts are conflicting. Here we evaluated the association between thyroid and kidney function with eGFR (cross-sectionally) as well as renal events and mortality (prospectively) in a large, prospective cohort of CKD patients with mild to moderately reduced kidney function. METHODS Thyroid markers were measured among CKD patients from the German Chronic Kidney Disease study. Incident renal endpoints (combined ESKD, acute kidney injury and renal death) and all-cause mortality were abstracted from hospital records and death certificates. Time to first event analysis of complete data from baseline to the 4-year follow-up (median follow-up time 4.04 years) of 4600 patients was conducted. Multivariable linear regression and Cox proportional hazards models were fitted for single and combined continuous thyroid markers [TSH, free thyroxine (FT4), FT3] and thyroid status. RESULTS Cross-sectionally, the presence of low-FT3 syndrome showed a significant inverse association with eGFR and continuous FT3 levels alone showed a significant positive association with eGFR; in combination with FT4 and TSH, FT3 levels also showed a positive association and FT4 levels showed a negative association with eGFR. Prospectively, higher FT4 and lower FT3 levels were significantly associated with a higher risk of all-cause mortality (N events = 297). Per picomole per litre higher FT3 levels the risk of reaching the composite renal endpoint was 0.73-fold lower (95% confidence interval 0.65-0.82; N events = 615). Compared with euthyroid patients, patients with low-FT3 syndrome had a 2.2-fold higher risk and patients with hypothyroidism had a 1.6-fold higher risk of experiencing the composite renal endpoint. CONCLUSIONS Patients with mild to moderate CKD suffering from thyroid function abnormalities are at an increased risk of adverse renal events and all-cause mortality over time.
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Affiliation(s)
- Ulla T Schultheiss
- Institute of Genetic Epidemiology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
- Department of Medicine IV – Nephrology and Primary Care, Medical Center - University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Inga Steinbrenner
- Institute of Genetic Epidemiology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Markus P Schneider
- Department of Nephrology and Hypertension, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Fruzsina Kotsis
- Institute of Genetic Epidemiology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
- Department of Medicine IV – Nephrology and Primary Care, Medical Center - University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Seema Baid-Agrawal
- Department of Nephrology and Transplant Center, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Elke Schaeffner
- Institute of Public Health, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Kai-Uwe Eckardt
- Department of Nephrology and Hypertension, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Department of Nephrology and Medical Intensive Care, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Anna Köttgen
- Institute of Genetic Epidemiology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Peggy Sekula
- Institute of Genetic Epidemiology, Medical Center – University of Freiburg, Faculty of Medicine, Freiburg, Germany
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Kamal NM, El Sayed AM, Sabah NA. Frequency and relation of thyroid dysfunction and inflammation in chronic kidney diseases in the Nephrology Unit, Zagazig University. THE EGYPTIAN JOURNAL OF INTERNAL MEDICINE 2019. [DOI: 10.4103/ejim.ejim_120_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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14
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Xiong H, Yan P, Huang Q, Shuai T, Liu J, Zhu L, Lu J, Shi X, Yang K, Liu J. A prognostic role for non-thyroidal illness syndrome in chronic renal failure:a systematic review and meta-analysis. Int J Surg 2019; 70:44-52. [PMID: 31437639 DOI: 10.1016/j.ijsu.2019.08.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 07/24/2019] [Accepted: 08/16/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Chronic renal failure (CRF) is a serious disease that has become a burden on global and local economics and public health. In addition, non-thyroidal illness syndrome (NTIS) has become increasingly more prevalent in CRF patients. MATERIALS AND METHODS A data search was conducted on the PubMed/Medline, Cochrane Library, Web of Science, Embase, and CBM databases to identify studies up to November 1st, 2018, that compared low T3 and normal T3 levels in patients with CRF. Data analysis was done by calculating the relative risks (RR) and 95% confidence intervals (95% CI) and continuous variables were described by weighted mean difference (WMD) and 95% CI. The efficacy outcomes included renal function and mortality. The Newcastle-Ottawa Scale and Agency for Healthcare Research and Quality scale were used to assess the quality of the cohort and cross-sectional studies, respectively. A funnel plot was used to identify publication bias. RESULTS Seventeen studies with a total of 4593 patients were finally included in the analysis. Among the 17 studies, 11 reported the mortality of CRF patients with low T3 and normal T3 levels. Subgroups were assigned according to different follow-up times and different methods of treatment. The mortality rate in the low T3 group was much higher than in the normal T3 group. 11 studies reported creatinine (Cr) results in patients with low T3 and normal T3 levels and our analysis found no significant differences between the two groups (95%CI: 0.46-0.25; P-heterogeneity = 0.000; P = 0.559). Five studies reported uric acid results and we found no significant differences between the two groups (95%CI: 0.08-0.22; P-heterogeneity = 0.438; P = 0.377). Five studies reported the urea levels in the two groups and our analysis found no significant differences (95%CI: 1.60-1.23; I2 = 0.0%; P-heterogeneity = 0.498;P = 0.798). CONCLUSION Low T3 had a greater impact on the short-term prognosis of patients with CRF than on the long-term prognosis. NTIS did not cause substantial kidney damage.
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Affiliation(s)
- Huaiyu Xiong
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Peijing Yan
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China; Institute of Clinical Research and Evidence Based Medicine, The Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Qiangru Huang
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Tiankui Shuai
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Jingjing Liu
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Lei Zhu
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Jiaju Lu
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China
| | - Xiue Shi
- Institute of Evidence Based Rehabilitation Medicine of Gansu Province, Lanzhou, 730000, China
| | - Kehu Yang
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China; Institute of Clinical Research and Evidence Based Medicine, The Gansu Provincial Hospital, Lanzhou, 730000, China; Evidence Based Social Science Research Center, Lanzhou University, Lanzhou, 730000, China; Institute of Evidence Based Rehabilitation Medicine of Gansu Province, Lanzhou, 730000, China; Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, 730000, China.
| | - Jian Liu
- Department of Intensive Care Unit, The First Hospital of Lanzhou University, Lanzhou, 730000, China; The First Clinical Medical College of the First Hospital of Lanzhou University, Lanzhou, 730000, China.
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Li LZ, Hu Y, Ai SL, Cheng L, Liu J, Morris E, Li Y, Gou SJ, Fu P. The relationship between thyroid dysfunction and nephrotic syndrome: a clinicopathological study. Sci Rep 2019; 9:6421. [PMID: 31015507 PMCID: PMC6478922 DOI: 10.1038/s41598-019-42905-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 04/11/2019] [Indexed: 02/05/2023] Open
Abstract
Abnormalities of thyroid function are common in patients with nephrotic syndrome (NS). However, a limited number of studies have reported on the association between clinicopathologic features and thyroid dysfunction in patients with NS. We retrospectively studied 317 patients who had been definitively diagnosed with NS. The NS patients with thyroid dysfunction showed higher urine protein, creatinine and lipid levels and lower albumin and hemoglobin than those with normal thyroid function, with no significant differences of pathological types. After dividing thyroid dysfunction groups into five subgroups, interestingly, membranous nephropathy was the most common pathologic type, both in normal thyroid group and in subclinical hypothyroidism group (40.4% and 46.7%, respectively), followed by minimal change disease (28.1% and 21.7%, respectively); while in the hypothyroid, low T3, and low T3T4 groups minimal change disease is now the leading type (48.8%, 33.3% and 38.6%, respectively). High levels of urinary protein, creatinine, cholesterol, and platelets were independent risk factors predicting thyroid dysfunction, while higher albumin and hemoglobin were protective factors. We demonstrated that the type of renal pathology was different among NS patients in different thyroid dysfunction subgroups. Interpretation of the interactions between thyroid and renal function is a challenge for clinicians involved in the treatment of patients with NS.
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Affiliation(s)
- Ling-Zhi Li
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China
| | - Yao Hu
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China.,Renal Division, Department of Medicine, Affiliated Hospital of Chengdu University, Chengdu, 610081, China
| | - Shuang-Lan Ai
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China
| | - Lu Cheng
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China
| | - Jing Liu
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China
| | - Emily Morris
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Yi Li
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, United States of America
| | - Shen-Ju Gou
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China.
| | - Ping Fu
- Renal Division, Department of Medicine, West China Hospital of Sichuan University, Kidney Research Institute, Chengdu, 610041, China
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Duyu A, Çağlar Çıtak E, Ak E, Küpeli S, Yağcı Küpeli B, Bayram İ, Sezgin G, Eskendari G, Sezer K. Prevalence and Related Factors of Euthyroid Sick Syndrome in Children with Untreated Cancer According to Two Different Criteria. J Clin Res Pediatr Endocrinol 2018; 10:198-205. [PMID: 29553046 PMCID: PMC6083463 DOI: 10.4274/jcrpe.0015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE In this study, we evaluated the frequency of euthyroid sick syndrome (ESS) among patients with childhood cancer and its association with the stage of disease, nutritional parameters and cytokines levels. METHODS Eighty newly diagnosed children were included in the study. ESS was assessed in two different ways. According to criteria 1 ESS was present if free triiodothyronine (fT3) was below the lower limit and free thyroxine was within the normal or low limits, thyroid-stimulating hormone (TSH) was in the normal range. According to criteria 2, in addition to the above, it was required that reverse triiodothyronine (rT3) be performed and was higher than normal limits. RESULTS Three of our pediatric patients had subclinical hypothyroidism and two had subclinical hyperthyroidism. Out of 75 patients, ESS was identified in 14 (17.3%) according to criteria 1 and in eight (10.6%) according to criteria 2. Only fT3 levels were significantly different in the ESS (+) and ESS (-) groups (p<0.05) according to criteria 1. A significantly negative correlation between interleukin (IL)-6 and fT3 was found, according to both sets of criteria. tumor necrosis factor alpha was negatively correlated with fT3 levels only in the criteria 1 group. There were no correlations between IL-1β and fT3, free thyroxine, rT3 and TSH levels. CONCLUSION ESS may occur in childhood cancer and thyroid function testing should be performed routinely when cancer is diagnosed.
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Affiliation(s)
- Ali Duyu
- Mersin University Faculty of Medicine, Department of Pediatric Oncology, Mersin, Turkey
| | - Elvan Çağlar Çıtak
- Mersin University Faculty of Medicine, Department of Pediatric Oncology, Mersin, Turkey
- * Address for Correspondence: Mersin University Faculty of Medicine, Department of Pediatric Oncology, Mersin, Turkey E-mail:
| | - Erdem Ak
- Mersin University Faculty of Medicine, Department of Pediatric Oncology, Mersin, Turkey
| | - Serhan Küpeli
- Çukurova University Faculty of Medicine, Department of Pediatric Oncology, Adana, Turkey
| | - Begül Yağcı Küpeli
- Adana City Training and Research Hospital, Clinic of Pediatric Oncology, Adana, Turkey
| | - İbrahim Bayram
- Çukurova University Faculty of Medicine, Department of Pediatric Oncology, Adana, Turkey
| | - Gülay Sezgin
- Çukurova University Faculty of Medicine, Department of Pediatric Oncology, Adana, Turkey
| | - Gülçin Eskendari
- Mersin University Faculty of Medicine, Department of Medical Biochemistry, Mersin, Turkey
| | - Kerem Sezer
- Mersin University Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology and Metabolism, Mersin, Turkey
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Tomic S, Brkic S, Lendak D, Maric D, Medic Stojanoska M, Novakov Mikic A. Neuroendocrine disorder in chronic fatigue syndrome. Turk J Med Sci 2017; 47:1097-1103. [PMID: 29154201 DOI: 10.3906/sag-1601-110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Background/aim: Neuroendocrine disorders are considered a possible pathogenetic mechanism in chronic fatigue syndrome (CFS). The aim of our study was to determine the function of the hypothalamic-pituitary-adrenal axis (HPA) and thyroid function in women of reproductive age suffering from CFS. Materials and methods: The study included 40 women suffering from CFS and 40 healthy women (15-45 years old). Serum levels of cortisol (0800 and 1800 hours), ACTH, total T4, total T3, and TSH were measured in all subjects. The Fibro Fatigue Scale was used for determination of fatigue level. Results: Cortisol serum levels were normal in both groups. The distinctively positive moderate correlation of morning and afternoon cortisol levels that was observed in healthy women was absent in the CFS group. This may indicate a disturbed physiological rhythm of cortisol secretion. Although basal serum T4, T3, and TSH levels were normal in all subjects, concentrations of T3 were significantly lower in the CFS group. Conclusion: One-time hormone measurement is not sufficient to detect hormonal imbalance in women suffering from CFS. Absence of a correlation between afternoon and morning cortisol level could be a more representative factor for detecting HPA axis disturbance.
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Piccoli GB, Moio MR, Fois A, Sofronie A, Gendrot L, Cabiddu G, D'Alessandro C, Cupisti A. The Diet and Haemodialysis Dyad: Three Eras, Four Open Questions and Four Paradoxes. A Narrative Review, Towards a Personalized, Patient-Centered Approach. Nutrients 2017; 9:E372. [PMID: 28394304 PMCID: PMC5409711 DOI: 10.3390/nu9040372] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 03/17/2017] [Accepted: 03/31/2017] [Indexed: 12/25/2022] Open
Abstract
The history of dialysis and diet can be viewed as a series of battles waged against potential threats to patients' lives. In the early years of dialysis, potassium was identified as "the killer", and the lists patients were given of forbidden foods included most plant-derived nourishment. As soon as dialysis became more efficient and survival increased, hyperphosphatemia, was identified as the enemy, generating an even longer list of banned aliments. Conversely, the "third era" finds us combating protein-energy wasting. This review discusses four questions and four paradoxes, regarding the diet-dialysis dyad: are the "magic numbers" of nutritional requirements (calories: 30-35 kcal/kg; proteins > 1.2 g/kg) still valid? Are the guidelines based on the metabolic needs of patients on "conventional" thrice-weekly bicarbonate dialysis applicable to different dialysis schedules, including daily dialysis or haemodiafiltration? The quantity of phosphate and potassium contained in processed and preserved foods may be significantly different from those in untreated foods: what are we eating? Is malnutrition one condition or a combination of conditions? The paradoxes: obesity is associated with higher survival in dialysis, losing weight is associated with mortality, but high BMI is a contraindication for kidney transplantation; it is difficult to limit phosphate intake when a patient is on a high-protein diet, such as the ones usually prescribed on dialysis; low serum albumin is associated with low dialysis efficiency and reduced survival, but on haemodiafiltration, high efficiency is coupled with albumin losses; banning plant derived food may limit consumption of "vascular healthy" food in a vulnerable population. Tailored approaches and agreed practices are needed so that we can identify attainable goals and pursue them in our fragile haemodialysis populations.
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Affiliation(s)
- Giorgina Barbara Piccoli
- Dipartimento di Scienze Cliniche e Biologiche, University of Torino, 10100 Torino, Italy.
- Nephrologie, Centre Hospitalier le Mans, Avenue Roubillard, 72000 Le Mans, France.
| | - Maria Rita Moio
- Nephrologie, Centre Hospitalier le Mans, Avenue Roubillard, 72000 Le Mans, France.
| | - Antioco Fois
- Nefrologia, Ospedale Brotzu, 09100 Cagliari, Italy.
| | - Andreea Sofronie
- Nephrologie, Centre Hospitalier le Mans, Avenue Roubillard, 72000 Le Mans, France.
| | - Lurlinys Gendrot
- Nephrologie, Centre Hospitalier le Mans, Avenue Roubillard, 72000 Le Mans, France.
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Abstract
Thyroid hormones influence renal development, kidney hemodynamics, glomerular filtration rate and sodium and water homeostasis. Hypothyroidism and hyperthyroidism affect renal function by direct renal effects as well as systemic hemodynamic, metabolic and cardiovascular effects. Hypothyroidism has been associated with increased serum creatinine and decreased glomerular filtration rate. The reverse effects have been reported in thyrotoxicosis. Most of renal manifestations of thyroid dysfunction are reversible with treatment. Kidney disease may also cause thyroid dysfunction by several mechanisms. Nephrotic syndrome has been associated to changes in serum thyroid hormone concentrations. Different forms of glomerulonephritis and tubulointerstitial disease may be linked to thyroid derangements. A high prevalence of thyroid hormone alteration has been reported in acute kidney injury. Thyroid dysfunction is highly prevalent in chronic kidney disease patients. Subclinical hypothyroidism and low triiodothyronine syndrome are common features in patients with chronic kidney disease. Patients treated by both hemodialysis and peritoneal dialysis, and renal transplantation recipients, exhibit thyroid hormone alterations and thyroid disease with higher frequency than that found in the general population. Drugs used in the therapy of thyroid disease may lead to renal complications and, similarly, drugs used in kidney disorders may be associated to thyroid alterations. Lastly, low thyroid hormones, especially low triiodothyronine levels, in patients with chronic kidney disease have been related to a higher risk of cardiovascular disease and all-cause mortality. Interpretation of the interactions between thyroid and renal function is a challenge for clinicians involved in the treatment of patients with thyroid and kidney disease.
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Affiliation(s)
- Pedro Iglesias
- Department of Endocrinology, Hospital Ramón y Cajal, Ctra. De Colmenar, Km 9,100, 28034, Madrid, Spain.
| | - María Auxiliadora Bajo
- Department of Nephrology, Hospital La Paz, Madrid, Spain
- Department of Health Sciences, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rafael Selgas
- Department of Nephrology, Hospital La Paz, Madrid, Spain
- Department of Health Sciences, Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan José Díez
- Department of Endocrinology, Hospital Ramón y Cajal, Ctra. De Colmenar, Km 9,100, 28034, Madrid, Spain
- Department of Medicine, University de Alcalá de Henares, Madrid, Spain
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Yan W, Wang L, Huang T, Xu G. Treatment for non-thyroidal illness syndrome in advanced chronic kidney disease: a single-blind controlled study. J Nephrol 2016; 30:557-565. [PMID: 27485006 DOI: 10.1007/s40620-016-0341-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/26/2016] [Indexed: 12/28/2022]
Abstract
AIM Non-thyroidal illness syndrome (NTIS) is common among patients with advanced chronic kidney disease (CKD) and is strongly associated with poor prognosis. However, it remains unclear in how to correct this disorder and this study aimed to evaluate the effectiveness of sodium bicarbonate (SB) and N-acetyl-cysteine (NAC) for correcting NTIS status. METHODS Patients with CKD stage 3-4 were single-blind, placebo-controlled treated with placebo, SB, or NAC for 18 weeks. The primary end points were the correction of NTIS and the occurrence of end-stage renal disease (ESRD). The secondary point was the change in estimated glomerular filtration rate (eGFR) after the follow-up. RESULTS The Kaplan-Meier survival analysis showed significant lower correcting ratio of NTIS in control group compared with SB group [Hazard ratio (HR) 0.19, 95 % confidence interval (CI) 0.04-0.89, p = 0.035] and NAC group (HR 0.09, 95 % CI 0.02-0.38, p = 0.001), and increased ESRD risk in control group than in SB group (HR 1.97, 95 % CI 1.02-3.84, p = 0.045) and NAC group (HR 5.50, 95 % CI 2.23-13.57, p < 0.001). The Cox regression analysis demonstrated significantly different effectiveness of placebo, SB and NAC on NTIS correction and ESRD risk, p < 0.05, respectively. Variance analysis displayed a greater reduction in eGFR in controls than in SB (p = 0.044) and NAC group (p < 0.001). CONCLUSION SB and NAC are effective in promoting the recovery from NTIS status and delaying the deterioration of renal function in advanced CKD patients.
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Affiliation(s)
- Wenjun Yan
- Department of Nephrology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, People's Republic of China
| | - Lijuan Wang
- Medical Center of the Graduate School, Nanchang University, Nanchang, People's Republic of China
| | - Tianlun Huang
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, 1, Minde Road, Nanchang, 330006, People's Republic of China
| | - Gaosi Xu
- Department of Nephrology, The Second Affiliated Hospital of Nanchang University, 1, Minde Road, Nanchang, 330006, People's Republic of China.
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Abnormal thyroid hormones and non-thyroidal illness syndrome in obstructive sleep apnea, and effects of CPAP treatment. Sleep Med 2016; 23:21-25. [PMID: 27692273 DOI: 10.1016/j.sleep.2016.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/08/2016] [Accepted: 07/13/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVE In obstructive sleep apnea (OSA), while both hypothyroidism and hyperthyroidism have been studied, the occurrence of non-thyroidal illness syndrome (NTIS) (normal thyroid stimulating hormone [TSH] with low triiodotironine) has not been investigated. We explored the occurrence of NTIS in patients with moderate to severe OSA and its relationship to the severity of nocturnal respiratory disorders. We also studied the occurrence of subclinical hypothyroidism (SH, ie, high TSH with normal thyroxine) in OSA and changes in circulating TSH, free triiodotironine (fT3) and free thyroxine (fT4) after CPAP treatment. METHODS After a nocturnal respiratory polysomnography, 125 consecutive patients with moderate to severe OSA and 60 control subjects with normal nocturnal respiration were recruited. Morning circulating TSH, fT3, and fT4 were measured in all subjects. In a subsample of patients, nocturnal polysomnography and hormonal determinations were repeated after CPAP treatment for five months. RESULTS NTIS was found in 13 (10.4%), and SH in ten (8%) OSA subjects, but not in any control subjects. Patients with NTIS showed worse mean nocturnal oxygen saturation and time with saturation <90% (both p < 0.001). After treatment, NTIS subjects (n = 13) showed an increase in fT3 (p < 0.001) to the normal range, and SH subjects (n = 6) a slight decrease in TSH (p = 0.01). In the patients with normal hormones before treatment (n = 45), no change was observed. CONCLUSIONS NTIS may occur in OSA patients with severe nocturnal hypoxemia. OSA treatment is followed by an improvement in TSH in patients with abnormal baseline levels of this hormone, and by recovery of NTIS.
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Fan J, Yan P, Wang Y, Shen B, Ding F, Liu Y. Prevalence and Clinical Significance of Low T3 Syndrome in Non-Dialysis Patients with Chronic Kidney Disease. Med Sci Monit 2016; 22:1171-9. [PMID: 27056188 PMCID: PMC4827515 DOI: 10.12659/msm.895953] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background There are few data on the prevalence of low T3 (triiodothyronine) syndrome in patients with non-dialysis chronic kidney disease (CKD) and it is unclear whether low T3 can be used to predict the progression of CKD. Material/Methods We retrospectively studied 279 patients who had been definitively diagnosed with CKD, without needing maintenance dialysis. Thyroid function was analyzed in all enrolled subjects and the incidence of thyroid dysfunction (low T3 syndrome, low T4 syndrome, and subclinical hypothyroidism) in patients at different stages of CKD was determined. Results Glomerular filtration rate (GFR) of CKD patients was estimated as follows: 145 subjects (52%) had GFR <60 ml/min per 1.73 m2; 47 subjects (16.8%) had GFR between 30 and 59 ml/min per 1.73 m2, and 98 subjects (35.1%) had GFR <30 ml/min per 1.73 m2. Among all enrolled subjects, 4.7% (n=13) had subclinical hypothyroidism, 5.4% (n=15) had low T4 syndrome, and 47% (n=131) had low T3 syndrome. In 114 CKD patients in stages 3–5, serum T3 was positively related to protein metabolism (STP, PA, and ALB) and anemia indicators (Hb and RBC), and negatively related to inflammatory status (CRP and IL-6). Conclusions A high prevalence of low T3 syndrome was observed in CKD patients without dialysis, even in early stages (1 and 2). The increasing prevalence of low T3 as CKD progresses indicates its value as a predictor of worsening CKD. Furthermore, low T3 syndrome is closely associated with both malnutrition-inflammation complex syndrome (MICS) and anemia.
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Affiliation(s)
- Jingxian Fan
- Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Peng Yan
- , Shanghai Medical Association, Shanghai, China (mainland)
| | - Yingdeng Wang
- Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Bo Shen
- Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Feng Ding
- Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Yingli Liu
- Department of Nephrology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
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Abstract
BACKGROUND The roles of antioxidant therapy on non-thyroidal illness syndrome (NTIS) in uremic rats is still unclear. MATERIALS AND METHODS Twenty-four Sprague-Dawley (SD) rats were randomly divided into blank, 5/6 nephrectomy (Nx), pyrrolidine dithiocarbamate (PDTC, 10 mg/100 g), sodium bicarbonate (SB, 0.1 g/100 g), N-acetylcysteine (NAC, 80 mg/100 g) and thyroid hormones (TH, levothyroxine 2 μg/100 g) groups. The serum levels of malondialdehyde (MDA), superoxide dismutase (SOD), advanced oxidation protein products (AOPP), interleukin (IL)-1β, free triiodothyronine (FT3), and thyroid stimulating hormone (TSH) were detected in the sixth week. The expressions of IL-1β and deiodinase type 1 (DIO1) were assessed by western blotting. The nuclear factor kappa B (NF-κB) inflammatory signal pathway was confirmed by electrophoretic mobility shift assay (EMSA). RESULTS Compared with 5/6 Nx group, PDTC and NAC significantly reduced the levels (p < 0.01, respectively) of serum MDA, AOPP, TSH, and elevated levels of serum SOD (p < 0.01, respectively) and FT3 (p = 0.016 and p < 0.01). Neither had significant effects on serum IL-1β content (p = 0.612 and p = 0.582). PDTC and NAC markedly decreased the protein expression of IL-1β (p < 0.01) and increased the protein expression of DIO1 (p < 0.01), respectively. Both had been considerably blunted NF-κB activity (p < 0.01). CONCLUSIONS In uremic rat model, PDTC and NAC can effectively improve oxidative stress level and NTIS. In terms of improving oxidative stress level, NAC is probably superior to PDTC.
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Affiliation(s)
- Pingping Yang
- a Department of Nephrology, Second Affiliated Hospital , Nanchang University , Nanchang , China ;,b Medical Center of the Graduate School , Nanchang University , Nanchang , China
| | - Yun Li
- c Department of Nephrology , Jiangxi Provincial People's Hospital , Nanchang , China
| | - Gaosi Xu
- a Department of Nephrology, Second Affiliated Hospital , Nanchang University , Nanchang , China
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Xu G, Luo K, Liu H, Huang T, Fang X, Tu W. The progress of inflammation and oxidative stress in patients with chronic kidney disease. Ren Fail 2014; 37:45-9. [PMID: 25375354 DOI: 10.3109/0886022x.2014.964141] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The variations and their correlation of inflammation and oxidative stress in chronic kidney disease (CKD) have not been thoroughly understood. MATERIALS AND METHODS Biomarkers of inflammation and oxidative stress were measured in a cohort of 176 patients with CKD ranging from stage 1 to 5 and 67 healthy controls. Correlation analysis in levels between inflammation and oxidative stress was also performed with estimated glomerular filtration rate (eGFR) using the Modification of Diet in Renal Disease (MDRD) formula. Concentrations of serum creatinine (Scr), hs-CRP (hypersensitive C reactive protein) and MDA (malondialdehyde) of these participants were measured again after 12 month follow-up. RESULTS In the present study, with the development of CKD, serum levels of hs-CRP, interleukin-6 (IL-6) and MDA were significantly increased, and the serum levels of SOD (superoxide dismutase) and GSH-PX (glutathione peroxidase) were significantly decreased in these participants. eGFR was inversely associated with MDA and positively with SOD and GSH-PX when adjusting for age and hypertension therapy. IL-6 and hs-CRP were positively correlated with MDA, and negatively associated with SOD and GSH-PX. Notably, after 12-month follow-up, the increase in Scr was positively associated with the increase in hs-CRP (p < 0.01) and MDA (p < 0.05), respectively. CONCLUSIONS Inflammation and oxidative stress interacted with each other and played pivotal roles in the development of CKD. Variation in eGFR was parallel with the changes of oxidative stress and inflammation when CKD developing.
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Affiliation(s)
- Gaosi Xu
- Department of Nephrology, Second Affiliated Hospital, Nanchang University , Nanchang , China and
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Xu G, Yan Y, Liu Y. The cardiovascular disease risks of nonthyroidal illness syndrome and inflammatory responses on patients with chronic kidney disease: from the association to clinical prognosis. Cardiovasc Ther 2014; 32:257-63. [PMID: 25251781 DOI: 10.1111/1755-5922.12092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Previous data have suggested the potential risk of low serum-free triiodothyronine (FT3) on the cardiovascular disease (CVD) events in patients with end-stage renal disease (ESRD). However, the roles of FT3 and interleukin-6 (IL-6) in the developing of CVD events in patients with chronic kidney disease (CKD) have not been investigated. PATIENTS AND METHODS A total of 176 consecutive patients with CKD underwent thyroid function, IL-6, and echocardiography evaluation. They were divided into two subgroups: group I, 77 patients with IL-6 >200 ng/L, and group II, 99 patients with IL-6 <200 ng/L. The total patients were also divided into two subgroups according to their serum FT3: group A, 83 patients with FT3 <4.0 pmol/L, and group B, 93 patients with FT3 >4.0 pmol/L. RESULTS Serum FT3 (β = -0.21, P < 0.01), IL-6 (β = 0.48, P < 0.01), and glutathione peroxidase (GSH-Px, β = -0.58, P < 0.01) were found independently associated with left ventricular mass index (LVMI). Patients with higher IL-6 had significantly higher CVD incidence than those with IL-6 <200 ng/L (HR 1.98, P = 0.014); Patients with lower FT3 had significantly higher CVD incidence than those with FT3 >4.0 pmol/L (HR 1.81, P = 0.038), when extensive demographics, comorbidities and laboratory adjustments were made. CONCLUSIONS Serum levels of FT3 and IL-6 were associated with the LVMI and previous CVD events; lower FT3 and higher IL-6 were strong predictors of subsequent CVD events in patients with CKD.
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Affiliation(s)
- Gaosi Xu
- Department of Nephrology, Second Affiliated Hospital, Nanchang University, Nanchang, China
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Xu G, Tu W, Qin S. The relationship between deiodinase activity and inflammatory responses under the stimulation of uremic toxins. J Transl Med 2014; 12:239. [PMID: 25174507 PMCID: PMC4155120 DOI: 10.1186/s12967-014-0239-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/23/2014] [Indexed: 12/29/2022] Open
Abstract
Background It is unclear to what extent uremic toxins participate in inflammatory responses and the activities of deiodinases, as well as the effects of deiodinases on inflammatory cytokines. Materials and methods Hepatocellular carcinoma cell lines (HepG2) were transfected with small interfering ribonucleic acid (siRNA) specific for deiodinase type 1 (DIO1) and cultured with or without uremic toxins. The mRNA expression of DIO1, interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α was detected by quantitative real-time PCR. The presence of selenoprotein M (SelM) and DIO1 was assessed by western blotting. Sonicate deiodinase activities in HepG2 cells were measured by a dithiothreitol-stimulated assay. The NF-κB, AP-1 and CREB-1 inflammatory signal pathways were confirmed by EMSA. Results After culturing for 24 h, the mRNA expression of DIO1 was significantly decreased by the specific siRNA (reduced by 76%, P = 0.0002). Uremic toxins significantly increased the mRNA expression (P < 0.01) of IL-1β, IL-6 and TNF-α and inhibited DIO1 mRNA expression (P < 0.01) compared with controls. Suppression of DIO1 by siRNA significantly decreased the mRNA expression of IL-1β and IL-6 (P < 0.05) but not TNF-α (P = 0.093). Uremic toxins and specific siRNA synchronously reduced the protein expression of SelM and DIO1. Conclusions Uremic toxins activate the expression of inflammatory cytokines. The major findings of this study indicate that the uremic toxins, more than inflammatory cytokines, play direct inhibitory roles in DIO1 enzyme activity, which then provides a negative feedback to the growing accumulation of inflammatory cytokines.
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Affiliation(s)
- Gaosi Xu
- Nanchang University, Nanchang, China.
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