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Estrogen - Crossref

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Last Updated: 13 August 2022

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Estrogen Receptor-Positive Breast Cancer: Exploiting Signaling Pathways Implicated in Endocrine Resistance

The estrogen receptor-u03b1 is the most common endocrine regulatory protein in breast and estrogen-induced BC. In women with hormone receptor-positive, human epidermal growth receptor 2-negative BCs with demonstrated disease recurrence or progression, clinical research is focusing on characterizing the effectiveness and tolerability of inhibitors targeting the phosphatidylinositol 3 kinase /akt murine thymoma viral oncogene/mammalian target of the phosphatidyligoma viral oncogene/ma /ma cytoma murine /ma e chroma /ma /pro /ma murine /ma phosphati /ma murine /ma kina murine kina murine /ma kina murine /ma /ma/ma Women with BC receiving antiestrogenic medication remain a significant problem for women with De novo and acquired resistance. In BC, this report discusses the intricate roles of the PI3K/AKT/mTOR and CDK4/6 pathways in intracellular signaling as well as the use of endocrine and endocrine-based combination therapy. Implications for Practice The use of endocrine therapy alone or in combination with targeted agents is part of the foundational program for treating hormone receptor-positive, human epidermal growth receptor 2-negative, advanced breast cancer patients.

Source link: https://doi.org/10.1634/theoncologist.2017-0423


Deletion of estrogen receptor α in skeletal muscle results in impaired contractility in female mice

The aim of this research was to determine the effects of skeletal muscle-specific ERu03b1 deletion on contractile function, hypothesizing that ERu03b1 is a key receptor by which estradiol affects female muscle mass. During the time body mass of skmER:u03b1 mice increased disproportionally, Deletion of ERu03b1 specifically in skeletal muscle did not have an effect on body mass until 26 wks old, when wild-type littermates did not affect body mass until 26 wks of age. The findings point to the fact that ERu03b1 in skeletal muscle results in muscle wasting, suggesting that the therapeutic effects of estradiol on muscle endurance are mediated by receptors, not gene mediated by ERu03b1. Until recently, WE analyzed in vitro and in vivo skeletal muscle contractility in female estrogen receptor u3b1 skeletal muscle knockout mice, discovering that force generation is impaired across a variety of parameters.

Source link: https://doi.org/10.1152/japplphysiol.00864.2017


Estrogenic Activity and Endocrine Disruptor Compounds Determined in Guanabara Bay (Brazil) by Yeast Estrogen Screen Assays and Chemical Analyses

In the last decade, the number of endocrine disrupting chemicals in marine environments has increased. The combination of poor sanitation conditions and inadequate investment in sewage treatment plants in Brazil has led to significant contamination of receiving waters. The aim of this research was to determine the presence of estrogenic substances in Guanabara Bay, southeastern Brazil, on the surface and deep waters, as well as the presence of estrogenic substances. Using fluorescence and diode array detectors, Yeast Estrogen Screen assay and determination of the Bisphenol A, estriol, 171b2-estradiol, 17-u03b2-estradiol, 17u03b2-estradiol, 17-1803b2-estradiol, 1781-ethinylestradiol Bisphenol A was discovered first, followed by 17u03b1-ethylestradiol, estriol, and 17u03b2-estradiol for surface and deep waters, respectively. The findings point to significant threats to the Guanabara Bay ecosystem. In the V. fisheri assay, no acute toxicity effects were observed.

Source link: https://doi.org/10.11137/1982-3908_2022_45_45450


Estrogen–Estrogen Receptor α Signaling Facilitates Bilirubin Metabolism in Regenerating Liver Through Regulating Cytochrome P450 2A6 Expression

Background: Aess: Insufficient numbers of hepatocytes are typically present in liver transplants, resulting in bilirubin metabolization, which could be converted into biliverdin. Our aim was to determine the effects of estradiol/estrogen receptor signaling on liver function recovery. Conclusions: The latency of bilirubin level reduction in women was shorter in women than in men, meaning that a female factor plays a role in bilirubin recovery after liver transplantation surgery. The expression of the cyp2a4 gene in livers from the knockout ERu03b1 mice's knockout mice was significantly lower in livers from the knockout mice than in livers from their wild-type littermates, but other bilirubin metabolism genes were similar between these groups; Our results add to our understanding of why the latency of improved bilirubin metabolism and subsequent liver function restoration in females and perhaps males is shorter than in males.

Source link: https://doi.org/10.1177/0963689717738258


Estrogen Related Receptor Alpha (ERRα) a Bridge between Metabolism and Adrenocortical Cancer Progression

The aim of this research was to investigate the metabolic changes in adrenocortical cancer cells in reaction to Estrogen Related Receptor u03b1 gene modulation and the effect on ACC progression. Our results reveal that ERRu03b1 is able to alter the metabolic profile of ACC cells, and inhibition of its release of mitotane-resistant ACC cells and the transition of ACC cell cultures to a highly migratory phenotype.

Source link: https://doi.org/10.3390/cancers14163885


Insilico Docking Study of Isoxazole Indole Linked Resorcinol Derivatives as Promising Selective Estrogen Receptor Modulators & Anticancer Drugs

As in Fig. 1,3,4,5, & 8 are among the B1 & A1 series's nine compounds with isoxazole-indole-resorcylic acid scaffold, segregated into a B1 & A1 series, with B1 being made up of nine compounds numbered 1,3,4,5, resorcinol, and isoxazole end of the scaffold, with variable substituents at the indole, &apose.

Source link: https://doi.org/10.1055/a-1888-4684


AB0980 Hand Osteoarthritis: investigating Pain Effects in a randomised placebo-controlled feasibility study of estrogen-containing therapy (HOPE-e): report on the primary feasibility outcomes

Symptomatic hand OA is more common in women, and its incidence rises around the age of menopause. Pre-clinical, epidemiologic, and post hoc studies in Hormone Replacement Therapy trials have demonstrated estrogen deficiency as of utiopathogenesis of OA. Hand OA to date, there have been no human trials of HRT. The licensed HRT Duavive was selected for its efficacy and tolerability. Objectives: We set out to determine the acceptability and acceptability of this sort of HRT in post-menopausal women with hand OA, as well as obtaining evidence of concept and refine methods for a complete review. Females aged 40-65 years and 1-10 years were recruited during the last menstrual period with hand OA complying ACR guidelines and 2+ painful hand joints. Eligibility implemented best practice for HRT prescription in HRT therapy, but did not expect menopausal symptoms. Hand pain and function, menopause symptoms, and joint appearance are all common problems. Both 28 participants completed all research sequels, with only three withdrawals from therapy due to AEs, 2 of which were in the placebo arm at week 24, and all in the placebo group. Participants/investigators were clearly blinded, according to Bangu2019's blinding survey, who indicated that participants/investigators were fully blinded. Hand cramps and pain control were to be included in additional research from focus groups, as well as pain reductions, but not to minimize the number of questions. Acknowledgements This study was supported by the National Institute of Health Research under its Patient Health Promotion Program, which was funded by the National Institute for Health Research. The study team acknowledges the sources and the participants who made this research possible.

Source link: https://doi.org/10.1136/annrheumdis-2022-eular.2437


AB0022 SELECTIVE ESTROGEN RECEPTOR MODULATORS AND TISSUE-SELECTIVE ESTROGEN COMPLEX DO NOT SHARE ESTROGENIC EFFECTS ON IGG SIALYLATION IN AUTOIMMUNE CONDITIONS

Since pre-RA patients with autoantibodies, it would also be helpful in restoring autoantibodies in pre-RA patients. Exposure to estrogen has negative side effects, and consequently selective estrogen receptor modulators have been introduced with estrogenic protective effects on bone but no impact on the reproductive system 2. Objectives: The SERM, Bazeodoxifene, as well as a tissue-selective estrogen complex, a combination of conjugated estrogen and BZA, has been approved for use of postmenopausal bone loss therapy. In a similar manner as E2, BZA increased sialyltransferase protein in plasma cells. Neither E2 nor BAZ or TSEC have shown significant improvement in general sialylation, but our results indicate that further research is required to determine E2, SERM, and TSEC's full effect on protein sialylation in autoimmune conditions. Estrogen increases St6gal1 expression and increases IgG sialylation in mice and patients with rheumatoid arthritis, which may be a potential explanation for the elevated risk of rheumatoid arthritis in postmenopausal women. BMD and bone turnover in postmenopausal women are shown by the 2-yr results of a placebo-blind, placebo-controlled, and active-controlled study. The findings from a three-year, randomised, placebo-, and active-controlled clinical trial show the efficacy of bazedoxifene in lowering new vertebral fracture risk in postmenopausal women with osteoporosis.

Source link: https://doi.org/10.1136/annrheumdis-2022-eular.1310


Evaluation of progesterone and estrogen receptor expression in 15 meningiomas of dogs and cats

U20148 dogs and 5 cats with intracranial meningiomas and 2 dogs with spinal cord meningiomas were discovered, as tissue samples were also obtained from 1 clinically healthy dog and 1 clinically normal cat. In 14 of 15 meningiomas, the Progesterone receptor immunoreactivity was detected in 14 of 15 of 15 meningiomas. In 8 intracranial meningiomas and 2 spinal cord meningiomas, over 80% of cells were found in > 80% of cells. Progesterone receptor expression was also present in 80% of cells. Progesterone receptors were found in 32 and 8% of cells respectively in samples of malignant transitional and granular cell meningiomas in dogs. No progesterone receptors were found in the intracranial meningioma in a dog treated with gestrinone. Conclusions and Clinical Relevance – u2014 Results show that a significant number of progesterone receptors were present in cells of CNS meningiomas in dogs and cats. Antiprogesterone therapy may have a role in the treatment of unresectable or recurrent meningiomas in dogs and cats.

Source link: https://doi.org/10.2460/ajvr.2003.64.1310


Quercetin inhibits cytotoxicity of PC12 cells induced by amyloid-beta 25–35 via stimulating estrogen receptor α, activating ERK1/2, and inhibiting apoptosis

Abstract: The accumulation of u03b-amyloid in the brain plays a vital role in Alzheimer's disease pathogenesis. One of the risk factors for AD is a lack of estrogen. However, the exact mechanism by which quercetin blocks AD is uncertain. The cells were then treated with A03b2-estradiol, genistein, and quercetin for another 24 hours, respectively, and were cultured with AUC33b2 25. u201335 for 24 h. Quercetin assisted PC12 cells induced by A03B2 2525. u201335 that were enlarged by quercetin, which in turn was boosted. Although quercetin raised the levels of estrogen receptor u03b1 and p-extracellular signal-regulated kinase 1/2, but not those of ERu03b2. In addition, pretreatment with U0126 will decrease Bcl-2/Bax ratios and increase Caspase-3 protein expression. Quercetin, according to a transcript, plays a neuroprotective role in the ER pathway and the mitogen-activated protein kinase pathway. Through the mediation of ERU03b1, quercetin could also be stimulated by quercetin, which may also be triggered by quercetin.

Source link: https://doi.org/10.1515/biol-2021-0014

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions