Hormones-International Journal of Endocrinology and Metabolism最新文献

Peroxisome proliferator-activated receptors (PPARs) belong to the nuclear hormone receptor family of ligand-activated receptors and are known for their roles as key factors in the regulation of lipid metabolism. In the more than three decades since their discovery, most reports on PPARs have focused on their roles in lipid metabolism, and a portion of the new research has also focused on the relationship between PPARs and fibrosis. Interestingly, lipid metabolism disorders and fibrosis are also inextricably linked. This implies that PPARs, lipid metabolism and fibrosis are interrelated. On this basis, we have summarized the molecular mechanisms of PPARs regulating fibrosis through lipid metabolism and PPARγ directly regulating fibrosis, and pointed out the contradictions and enigmas that need to be further explored in the processes of PPARs regulating lipid metabolism and fibrosis. The aim of the present review is to provide new ideas for PPARs for the treatment of lipid metabolism disorders and fibrosis.

Purpose: The aim of the study was to investigate how 8-week strength training affects adolescent athletes' basal hormone concentrations, sex hormone binding globulin (SHBG), insulin-like growth factor binding protein-3 (IGFBP-3), cytokine, and oxidative stress markers.

Methods: Twenty adolescent handball players participated in this study. The participants were randomly divided into the strength training group (ST, n = 10) and the control group (C, n = 10). ST participates in strength training 3 sessions a week for 8 weeks and C participates only in handball training. We quantified serum basal hormone concentration, SHBG, IGFBP3, oxidative stress markers, and IL-6 in each subject's blood samples before and after 8 weeks of strength training.

Results: Interestingly, while insulin-like growth factor-1 (IGF-1) concentration declined in group C (p < 0.05), it did not in ST (p > 0.05). Furthermore, the basal concentration of growth hormone (GH), total testosterone (T), cortisol (Cor), total antioxidant status (TAS), and serum-free androgen index (FAI) basal concentration did not change in ST and C. Basal IGFBP-3 and SHBG concentrations decreased only in ST (p < 0.05), but not in C (p > 0.05). Serum-free testosterone (FT) levels increased in ST and C (p > 0.05). Total oxidant status (TOS) and oxidative stress index (OSI) reduced ST and C (p < 0.05). Serum interleukin-6 (IL-6) levels did not alter groups ST and C.

Conclusion: Strength training did not affect basal serum concentrations of T, GH, IGF-1, COR, IL-6, and TAS, but it caused a decrease in SHBG and IGFBP3 concentrations in ST. Increased basal FT concentration and improved serum TOS may not depend on strength training.

Anti-Müllerian hormone (AMH) is a dimeric glycoprotein that belongs to the transforming growth factor beta superfamily and plays essential roles in sexual differentiation and folliculogenesis. In the male embryo, AMH is produced by the Sertoli cells and induces the involution of the Müllerian ducts. In females, AMH is predominately produced by the granulosa cells of growing preantral and small antral follicles and regulates follicular maturation. Many recent studies have highlighted the significant role of this hormone in the diagnostic approach to female children and adolescents with various disorders that affect ovarian development and function. AMH is considered a valuable diagnostic tool in the management of female pediatric patients with conditions such as polycystic ovary syndrome, precocious puberty, ovarian tumors, differences in sex development, and premature ovarian insufficiency. Standardization of AMH assays, internationally approved reference values based on age and pubertal stage, and widespread availability of the test could further upgrade the clinical utility of AMH, rendering it a valuable tool in the armamentarium of physicians involved in the care of female children and adolescents, and promote future research.

Purpose: Mobile applications (apps) have proven to be highly effective tools to empower patients with type 1 diabetes mellitus (T1DM) and enable them to achieve better self-care, quality of life (QOL), and glycemic control. The aim of the study is to examine whether mySugr^®, an app for diabetes management, together with teleconsultations, can have a positive impact on these factors and, thereby, replace current clinical care.

Methods: This study concerns an exploratory randomized clinical trial of 12 months' duration. People with T1DM using multiple daily injections were randomized to usual care (bolus calculator, five face-to-face visits) or intervention (mySugr^® app, three face-to-face visits, and two teleconsultations). The main outcome was increase in empowerment assessed with the Diabetes Empowerment Scale Short Form questionnaire (DES-SF-S). Secondary outcomes were change in additional glucose-related (blood glucose monitoring, mean blood glucose, standard deviation, coefficient of variation (CV), and high and low blood glucose index) and patient-reported outcome measures (PROMs) (self-management, QOL, and distress).

Results: A total of 25 out of 28 participants completed the study (52% men, age 44.52 years, diabetes duration 21.28 years). At 12 months, no significant differences were identified in the change of DES-SF-S and additional PROMs between arms. Similarly, no differences were observed in glucose-related outcomes except for the change in CV at 9 (control - 1.87 ± 4.98 vs. intervention 5.89 ± 11.33, p = 0.008) and 12 months (control - 2.33 ± 3.54 vs. intervention 5.12 ± 11.32, p = 0.018). Adherence to and satisfaction with the app were high.

Conclusion: Patients with diabetes using the mySugr^® app and teleconsultation achieved similar results to those following usual care in empowerment, other PROMs, and most glucose-related outcomes, thus supporting its use in combination with face-to-face visits. The RCT was registered with ClinicalTrials.gov (NCT03819335, first registration 28/01/2019).

The incidence of thyroid cancer has increased over recent years due to the fact that several diagnostic tools, such as neck ultrasound and fine-needle aspiration, are being ever more widely adopted. Lately, another modality which might provide significant information preoperatively on the aggressiveness of a thyroid tumor, its prognosis, and its recurrence rate is molecular testing. We reviewed the literature with regard to the role of preoperative molecular testing in patients with Bethesda V and Bethesda VI thyroid nodules and its impact on choice of the optimal treatment strategy. Several molecular mutations and alterations are associated with thyroid cancer and its biological behavior, such as BRAF-V600E, RET, and TERT promoter. Although the value of preoperative molecular testing for indeterminate nodules (Bethesda III and Bethesda IV) have been analyzed in numerous studies, the impact of preoperative molecular testing on Bethesda V and Bethesda VI thyroid nodules is not adequately described in the current literature. The preoperative recognition of specific molecular mutations, such as BRAFV600E and TERT promoter mutation, might provide more individualized management for thyroid cancer patients by altering the surgical approach and the extent of surgery for patients diagnosed with a more aggressive or iodine-resistant subtype of thyroid cancer.Thyroid cancer is characterized by multiple genetic mutations and alterations and, as a result, preoperative molecular testing of malignant nodules could be a very useful tool for surgeons, enabling them to decide on the most appropriate surgical approach for each patient.

Purpose: Variants in the GNB1 gene, which encodes for the beta-1 subunit of G proteins, have been associated with intellectual development disorder (OMIM: 616973), characterized by developmental delay, infantile hypotonia, seizures, and psychiatric problems. GNB1 variants may also cause a multisystem disorder, with symptoms such as hearing and vision impairment, gastrointestinal disorders, genitourinary abnormalities, and growth delay.

Case presentations: We present two pediatric patients with two novel GNB1 variants. The first patient is a 12-year old Caucasian European female with a history of neonatal hypotonia, feeding difficulties, and failure to thrive for the first 2 years of life. Subsequently, she developed grade 3 obesity, hyperphagia, and autoimmune thyroiditis. Whole Exome Sequencing (WES) revealed a novel likely pathogenic variant in the GNB1 gene (NM_002074.5:c.93_94del, p.Gln32AspfsTer46), which is predicted to result in a loss or disruption of normal protein function through nonsense-mediated decay (NMD) or protein truncation. The second patient is a 2-year old Roma female with severe failure to thrive during infancy, congenital hypothyroidism, and transient hyperoxaluria. No developmental delay was identified. Genetic testing excluded primary hyperoxaluria and WES revealed to be a novel likely pathogenic variant {NM_002074.5:c.183G > T (NP_002065.1:p.Met61Ile), which is predicted to have a damaging effect on the gene or gene product.

Conclusion: We present two rare pediatric cases with novel GNB1 variants which highlight the phenotypic variability associated with disrupted GNB1 expression. GNB1 may serve as a candidate gene for severe early onset obesity, hyperphagia, neurodevelopmental delay, and other metabolic and endocrine disorders.

Purpose: Anxiety is a common mental health issue during pregnancy. Moreover, women with gestational diabetes mellitus (GDM) seem to have to cope with higher levels of anxiety, being at higher risk for several health and mental complications. Women with GDM are recommended to undertake regular physical exercise to improve metabolic and reproductive outcomes. However, there are no specific guidelines for exercise in women with GDM and data on its relationship with mental health are scarce. The aim of this study was to investigate the effect of exercise on anxiety symptoms in pregnant women with GDM.

Methods: The present non-randomized, open-label clinical trial was a pilot study intended to provide initial data on the effect of exercise on anxiety symptoms of pregnant women with GDM. Forty-three women were assigned to three the following three study groups, (a) Advice Group (n = 17), Walking Group (n = 14), and Mixed Exercise Group (n = 12), from GDM diagnosis to delivery.

Results: Based on the Beck Anxiety Inventory (BAI) scores, all groups showed normal anxiety changes or mild anxiety levels pre- and post-intervention, ranging between 9.00 (1.00-32.00) (pre-intervention) and 7.5 (1.00-26.00) (post-intervention), but none experienced severe anxiety.

Conclusion: In the present study, a trend of self-selected pace walking to reduce the BAI scores was identified since the Walking Groups had lower scores after the intervention. However, this trend did not reach statistical significance. Brisk walking (30-45 min) three times per week may produce positive changes in both the treatment plan and the anxiety state of women with GDM. Moreover, the study confirms that routine medical care, counseling, and support by an interdisciplinary team are protective against anxiety in women with GDM.

Background and objectives: Growing evidence suggests that endogenous sex hormones (ESH) are associated with the risk of eczema or dermatitis. However, the causal relationship is not yet clear. This study aims to examine the potential effects of ESH (sex hormone-binding globulin levels, estradiol levels, total testosterone levels) on the risk of eczema or dermatitis using a two-sample Mendelian randomization (MR) study.

Methods: Genetic instruments from the largest available genome-wide association study (GWAS) for sex hormone-binding globulin levels, estradiol levels, and total testosterone levels were utilized to investigate the relationships between ESH and eczema or dermatitis. A set of complementary approaches was conducted to assess horizontal pleiotropy and potential caveats associated with this MR study.

Results: The MR analysis suggested that higher sex hormone-binding globulin levels are associated with an increased risk of eczema or dermatitis (MR-Egger: odds ratio [OR] = 1.003, 95% confidence interval [CI]:1.001-1.005, P = 0.007; weighted median: OR = 1.003, 95CI%:1.000-1.005, P = 0.023). Additionally, a suggestive association was observed between total testosterone levels and an increased risk of eczema or dermatitis (inverse variance weighted: OR = 1.005, 95CI%: 1.001-1.010, P = 0.024). However, the results showed no causal effects of estradiol levels on eczema or dermatitis. The accuracy and robustness of these findings were confirmed through sensitivity analyses.

Conclusions: This MR study supports a causal effect of SHBG sex hormone-binding globulin and TT levels on the risk of eczema or dermatitis, whereas estradiol appears to have no effect. These findings suggest that endogenous sex hormones may serve as potential biomarkers for eczema or dermatitis, which could be relevant to population groups beyond those of Europe.