Purpose: This study aimed to investigate the association between mild elevation of thyroid-stimulating hormone (TSH) levels and pregnancy outcomes of in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) treatments in women with the first fresh embryo transfer.
Methods: Large single-center retrospective cohort study of 15,728 patients from January 2018 to December 2022 were enrolled in the analyses. Clinical pregnancy rates, live birth rates, miscarriage rates, and ectopic pregnancy rates were compared between the TSH levels < 2.5 mIU/L group (N = 10,932) and TSH levels ≥ 2.5 mIU/L group (N = 4796). Subgroup analysis was performed for patients with TSH levels ≥ 2.5 mIU/L, dividing them into the thyroid peroxidase antibody (TPO)-negative group (N = 4524) and the TPO-positive group (N = 272).
Results: There were no significant differences in the aforementioned pregnancy outcomes between the TSH levels < 2.5 mIU/L group and TSH levels ≥ 2.5 mIU/L group. Similarly, no significant differences were observed in the pregnancy outcomes between the TPO-negative group and the TPO-positive group.
Conclusion: Mildly elevated pre-conception TSH levels in thyroid-normal infertile patients did not have an impact on pregnancy outcomes of IVF/ICSI treatments.
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http://dx.doi.org/10.1007/s10815-023-03014-4 | DOI Listing |
Dokl Biochem Biophys
January 2025
I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia.
Graves' disease is caused by overactivation of the thyroid-stimulating hormone receptor (TSHR). One approach for its treatment may be the use of negative allosteric modulators (NAM) of TSHR, which normalize TSHR activity and do not cause thyroid hormone (TH) deficiency. The aim of the work was to study the effect of a new compound 5-amino-4-(4-bromophenyl)-2-(methylthio)thieno[2,3-d]pyrimidine-6-carboxylic acid N-tert-butylamide (TPY4) on the basal and TSH-stimulated TH production in cultured FRTL-5 thyrocytes and on basal and thyrotropin-releasing hormone (TRH)-stimulated TH levels in the blood of rats.
View Article and Find Full Text PDFZool Res
January 2025
The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, Shandong 266003, China. E-mail:
Feeding behavior is regulated by a complex network of endogenous neuropeptides. In chordates, this role is suggested to be under the control of diverse factors including thyrotropin-releasing hormone (TRH). However, whether this regulatory activity of TRH is functionally conserved in non-chordate metazoans, and to what extent this process is underpinned by interactions of TRH with other neuropeptides such as cholecystokinin (CCK, known as a satiety signal), remain unclear.
View Article and Find Full Text PDFActa Endocrinol (Buchar)
January 2025
Zigong Fourth People's Hospital, Department of Endocrinology, Zigong, Sichuan, China.
Context: Previous studies have demonstrated a correlation between creatinine and cystatin levels and thyroid disorders.
Objective: To further investigate the diagnostic value of serum creatinine to cystatin C ratio in the diagnosis of thyrotoxicosis.
Design: One hundred eighty four thyrotoxicosis patients and 406 healthy controls were enrolled.
Acta Endocrinol (Buchar)
January 2025
Division of Endocrinology and Metabolism, Department of Internal Medicine, Chi-Mei Medical Center, Taiwan.
Context: Understanding factors delaying recovery in thyrotoxicosis patients is crucial for optimizing treatment plan.
Objective: This study aimed to identify predictive factors for the delayed thyroid function recovery in thyrotoxicosis patients.
Design: The study is a retrospective review of medical records of adult thyrotoxicosis patients diagnosed at Kaohsiung Veterans General Hospital, Taiwan, from January 2014 to December 2021.
Acta Endocrinol (Buchar)
January 2025
Adıyaman Training and Research Hospital, Department of Pediatric Endocrinology, Adıyaman, Turkey.
Context: Congenital hypothyroidism (CH) is one of the most common preventable causes of intellectual disability, and can be diagnosed in the early period through neonatal screening programs.
Objective: The purpose of this study was to determine the prevalence of CH and recall rates in the province of Adıyaman.
Design: This retrospective study evaluated the data of newborn screening program in Adıyaman province between January 2015 and December 2020.
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