The endocrine body rhythms including the hypothalamic-pituitary-thyroid axis seem to be regulated by the circadian timing system, and daily rhythmicity of circulating thyroid-stimulating hormone (TSH) is well established. The circadian rhythms are generated by endogenous clocks in the central brain oscillator located in the hypothalamic suprachiasmatic nucleus (SCN) as well as multiple peripher...

Cold acclimation induces very divergent responses in thyroid function in reptiles and mammals reflective of their different thermoregulatory modes. Naked mole-rats, unlike other small mammals, are unable to effectively employ endothermy and are operatively poikilotherms. We therefore investigated changes in their thyroid status with chronic cold exposure. Under simulated burrow conditions, free...

To evaluate the effect of perinatal factors and sampling methods on thyroid stimulating hormone (TSH) and thyroid hormone levels in cord blood, serum TSH, free thyroxine (FT4) and free triiodothyronine (FT3) concentrations were measured in 124 healthy term neonates. Eighty-eight infants were born in normal vaginal deliveries, 25 were delivered by vacuum extractor and 11 by Cesarean section. The...

Aim: This study purposed to evaluate thyroid hormone levels and work-related factors in workers.
 Materials Methods: retrospective was perfomed at 475 workers who applied the outpatient clinic of occupational diseases between November 2015-February 2020. Sociodemographic variables, laboratory records were retrospectively evaluated. Student’s t-test performed compare mean values. Multiple l...

Purpose: The aim of this study was to evaluate the relationship between thyroid hormone levels and clinical outcomes in preterm, small for gestational age (SGA) infants.
 Materials Methods: premature newborns (gestational ≤30 weeks) were divided into two groups as SGA non-SGA. Thyroid stimulating (TSH) free thyroxine (fT4) levels, frequency congenital hypothyroidism (CH), demographic chara...

OBJECTIVE  To estimate the effectiveness and safety of thyroid hormone treatment among pregnant women with subclinical hypothyroidism. DESIGN  Retrospective cohort study. SETTING  Large US administrative database between 1 January 2010 and 31 December 2014. PARTICIPANTS  5405 pregnant women with subclinical hypothyroidism, defined as untreated thyroid stimulating hormone (TSH) concentrati...

Objectives This study aimed to compare the presence of blepharitis, ocular tension (OT) with corneal thickness, refractive values and axial length changes in premenopausal postmenopausal women. Materials methods Thyroid-stimulating hormone (TSH), follicle-stimulating (FSH), luteinizing (LH), oestradiol (E2), prolactin, refractions horizontal vertical meridians, OT values, length, central thickn...

Chronic kidney disease (CKD) is a widespread condition in the global population and is more common in the elderly. Thyroid-stimulating hormone (TSH) level increases with aging, and hypothyroidism is highly prevalent in CKD patients. However, the relationship between low thyroid function and mortality in CKD patients is unclear. Therefore, we conducted a retrospective cohort study to examine the...

OBJECTIVE To assess use of serum thyroid hormone concentrations by veterinarians to diagnose hypothyroidism in sighthounds and to evaluate serum thyroid hormone concentrations in healthy Salukis. DESIGN Retrospective case series and cross-sectional study. ANIMALS 398 sighthounds of various breeds with a diagnosis of hypothyroidism and 283 healthy Salukis. PROCEDURES Pretreatment thyroid h...

Thyroid function disorder is a very common among the general population. Almost 3% of people around globe are receiving thyroid replacement therapy globe. Objectives: The study aimed to screen women with recurrent pregnancy loss. treatment effects on outcomes were also assessed. Methods: This longitudinal was conducted at Allama Iqbal Memorial Teaching Hospital Sialkot and Islamic International...