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Specialty: Endocrinology

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Total 648 results found since Jan 2013.

Advanced glycation end products induce skeletal muscle atrophy and insulin resistance via activating ROS-mediated ER stress PERK/FOXO1 signaling
In this study, we investigated whether AGEs could exacerbate skeletal muscle atrophy and its related insulin resistance. Mice were exposed to AGEs. Forkhead box O1 (FOXO1) was silenced by a constructed viral vector carrying siRNA. Skeletal muscle atrophy was evaluated by H&E, oil red O, myosin skeletal heavy chain (MHC) and laminin immunofluorescent stains. Reactive oxygen species (ROS) generation was assessed by DHE stain. Western blotting was used to evaluate protein expression and phosphorylation. Insulin resistance was monitored by insulin tolerance test (ITT) and glucose infusion rate (GIR). Mice exposed to AGEs s...
Source: Am J Physiol Endocri... - February 1, 2023 Category: Endocrinology Authors: Haixia Du Yanpeng Ma Xiqiang Wang Yong Zhang Ling Zhu Shuang Shi Shuo Pan Zhongwei Liu Source Type: research

STRA6 promotes thyroid carcinoma progression via activation of the ILK/AKT/mTOR axis in cells and female nude mice
CONCLUSIONS: Our study demonstrates the critical roles of STRA6 contributing to TC progression via the ILK/AKT/mTOR axis, which may provide a novel prognostic marker as well as a promising therapeutic target for aggressive TC.PMID:36592123 | DOI:10.1210/endocr/bqac215
Source: Endocrinology - January 2, 2023 Category: Endocrinology Authors: Weiman He Zhen Cheng Zijun Huo Bo Lin Xuejie Wang Yijia Sun Shuang Yu Siting Cao Junyu Xue Rengyun Liu Weiming Lv Yanbing Li Shubin Hong Haipeng Xiao Source Type: research

Cancer associated fibroblasts induce proliferation and therapeutic resistance to everolimus in neuroendocrine tumors through STAT3 activation
Conclusion Identifying STAT3 as the contributing pathway of this so far neglected tumor-stroma interaction has the potential to become a new therapeutic target to halt tumor growth and to restore therapeutic responsiveness in NET.
Source: Neuroendocrinology - December 6, 2022 Category: Endocrinology Source Type: research

JMJD6 orchestrates a transcriptional program in favor of endocrine resistance in ER+ breast cancer cells
High expression of Jumonji domain containing protein 6 (JMJD6) is strongly associated with poor prognosis in estrogen receptor positive (ER+) breast cancer. We overexpressed JMJD6 in MCF7 cells (JOE cells) and performed RNA-seq analysis. 76% of differentially expressed genes (DEGs) overlapped with ER target genes. Pathway analysis revealed that JMJD6 upregulated a larger subset of genes related to cell proliferation as compared to ER. Interestingly, JOE cells showed a decrease in ER target gene expression prompting us to check ER levels. Indeed, JOE cells showed a significant decrease in both ESR1 and ER levels and JMJD6 s...
Source: Frontiers in Endocrinology - November 7, 2022 Category: Endocrinology Source Type: research

Grim-19 deficiency promotes decidual macrophage autophagy in recurrent spontaneous abortion
In this study, we found that the expression of Grim-19 was decreased, and the expression of autophagy related proteins Beclin1, LC3B II/I and BNIP3 was markedly upregulated in decidual macrophages of RSA patients compared with the normal pregnancy group. Furthermore, we demonstrated that downregulation of GRIM-19 increased the expression of autophagy related proteins Beclin1, LC3B II/I, BNIP3 and the proinflammatory cytokines IL1B, IL6 and TNFa in uterine mononuclear cells of GRIM-19+/- mice. The proportion of CD45+CD11b+F4/80+LC3B+ cells in GRIM-19+/- mouse uteri was significantly higher than that in WT mouse uteri. In ad...
Source: Frontiers in Endocrinology - October 25, 2022 Category: Endocrinology Source Type: research

Androgens improve ovarian follicle function impaired by glucocorticoids through an androgen-IGF1-FSH synergistic effect
In this study, we aim to investigate the effects of high concentrations of glucocorticoids on the function of in vitro cultured ovarian cells and mouse early-stage ovarian follicles and to validate the hypothesis that androgen–insulin-like growth factor 1 (IGF1)–follicle-stimulating hormone (FSH) synergistic signaling helps to ameliorate the damage caused by high concentrations of glucocorticoids. KGN cells (human granulosa cell line) and mouse primary cells were treated with different concentrations of glucocorticoids, and the cell proliferation, apoptosis, and sex hormone secretion were detected. The effects of gluco...
Source: Frontiers in Endocrinology - October 19, 2022 Category: Endocrinology Source Type: research

Blocking REDD1/TXNIP Complex Ameliorates HG-Induced Renal Tubular Epithelial Cell Apoptosis and EMT through Repressing Oxidative Stress
Int J Endocrinol. 2022 Sep 21;2022:6073911. doi: 10.1155/2022/6073911. eCollection 2022.ABSTRACTDiabetic nephropathy (DN) has become the most common secondary kidney disease causing end-stage renal disease (ESRD). Nevertheless, the underlying mechanisms responsible for DN remain largely unknown. Regulated in development and DNA damage response 1 (REDD1) is a prooxidative molecule known to contribute to diabetes mellitus and its complications. However, it has not been previously examined whether and how REDD1 can further drive renal tubular epithelial cell (RTEC) apoptosis and epithelial-to-mesenchymal transition in DN. The...
Source: International Journal of Endocrinology - October 3, 2022 Category: Endocrinology Authors: Lin Mu Nan Chen Yakun Chen Zhifen Yang Huandi Zhou Shan Song Yonghong Shi Source Type: research