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https://www.readbyqxmd.com/read/27909742/the-anti-inflammatory-effect-of-montelukast-a-cysteinyl-leukotriene-receptor-1-antagonist-against-estradiol-induced-nonbacterial-inflammation-in-the-rat-prostate
#1
Mahmoud M Said, Maarten C Bosland
There is no standard treatment of chronic nonbacterial prostatitis in humans. The current study was aimed to investigate the effect of montelukast, an antagonist of cysteinyl leukotriene receptor-1, against estrogen-induced, nonbacterial lateral lobe-specific prostate inflammation in rats. Male Wistar rats were randomized into five groups of six rats, including sham controls (group 1) and castrated rats (group 2), whereas nonbacterial prostatitis (NBP) was induced in groups 3-5 by castration followed by a daily subcutaneous injection of estradiol (0...
December 1, 2016: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/27908549/noni-leaf-and-black-tea-enhance-bone-regeneration-in-estrogen-deficient-rats
#2
Nor Aijratul Asikin Mohd Shalan, Noordin M Mustapha, Suhaila Mohamed
OBJECTIVE: Black tea and Nonileaf are among the dietary compounds that can benefit patients with bone resorption disorders. Their bone regeneration effects and their mechanisms were studied in estrogen-deficient rats. METHODS: Noni leaves (three doses) and black tea water extracts were fed to ovariectomized rats for 4 mo, and their effects (analyzed via mechanical measurements, micro-computed tomography scan, and reverse transcriptase polymerase chain reaction mRNA) were compared with Remifemin (a commercial phytoestrogen product from black cohosh)...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27903449/sex-differences-in-the-estrogen-dependent-regulation-of-temporomandibular-joint-remodeling-in-altered-loading
#3
Jennifer L Robinson, Katelyn Cass, Ross Aronson, Thomas Choi, Manshan Xu, Ryan Buttenbaum, Hicham Drissi, Helen H Lu, Jing Chen, Sunil Wadhwa
OBJECTIVE: Temporomandibular joint (TMJ) diseases predominantly afflict women, suggesting a role of estrogen in the disease etiology. Previously, we determined that decreased occlusal loading (DOL) inhibited collagen type II (Col2) expression in the mandibular condylar cartilage (MCC) of female wild-type (WT) mice whereas no change was observed in males. This decrease in chondrogenesis was abolished by estrogen receptor beta (ERβ) deficiency in females. Therefore, the goal of this study was to examine the role of estradiol - ERβ signaling in mediating DOL effects in male mice to further decipher sex differences...
November 26, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27899088/alternative-splicing-of-estrogen-receptor-alpha-in-hepatocellular-carcinoma
#4
Jian Zhang, Jianwei Ren, Jiamin Wei, Charing C N Chong, Dongjie Yang, Yulong He, George G Chen, Paul B S Lai
BACKGROUND: The role of estrogen receptor alpha (ERa), estrogen receptor beta (ERb) and ERa36 signaling in hepatocellular carcinoma (HCC) is not fully addressed. METHODS: In this study, three cohorts were included: (i) primary HCC patients (N = 76, cohort P), (ii) colorectal liver metastasis (mCRC) (N = 32, cohort S), and (iii) HCC from The Cancer Genome Atlas (TCGA) (N = 121). The levels of ERa36 and wtER36 were measured and their correlation with clinicopathologic features was determined...
November 30, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27888004/unliganded-estrogen-receptor-alpha-regulates-vascular-cell-function-and-gene-expression
#5
Qing Lu, Gavin R Schnitzler, Caroline S Vallaster, Kazutaka Ueda, Stephanie Erdkamp, Christine E Briggs, Lakshmanan K Iyer, Iris Z Jaffe, Richard H Karas
The unliganded form of the estrogen receptor is generally thought to be inactive. Our prior studies, however, suggested that unliganded estrogen receptor alpha (ERα) exacerbates adverse vascular injury responses in mice. Here, we show that the presence of unliganded ERα decreases vascular endothelial cell (EC) migration and proliferation, increases smooth muscle cell (SMC) proliferation, and increases inflammatory responses in cultured ECs and SMCs. Unliganded ERα also regulates many genes in vascular ECs and mouse aorta...
November 22, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27880919/activation-of-g-protein-coupled-receptor-30-by-thiodiphenol-promotes-proliferation-of-estrogen-receptor-%C3%AE-positive-breast-cancer-cells
#6
Bingli Lei, Wei Peng, Gang Xu, Minghong Wu, Yu Wen, Jie Xu, Zhiqiang Yu, Yipei Wang
Many studies have been shown that environmental estrogen bisphenol A (BPA) can activate nuclear receptor (estrogen receptor alpha, ERα) or membrane receptor (G-protein-coupled receptor, GPR30) in breast cancer cells and exerts genomic or nongenomic actions inducing cell proliferation. 4,4'-thiodiphenol (TDP) as one of BPA derivatives exhibits more potent estrogenic activity than BPA does. However, comparatively little is known about the ways in which TDP interferes with these signaling pathways and produces cell biological changes...
November 20, 2016: Chemosphere
https://www.readbyqxmd.com/read/27872957/utility-of-18-f-fluoroestradiol-18-f-fes-pet-ct-imaging-as-a-pharmacodynamic-marker-in-patients-with-refractory-estrogen-receptor-positive-solid-tumors-receiving-z-endoxifen-therapy
#7
Frank I Lin, E M Gonzalez, S Kummar, K Do, J Shih, S Adler, K A Kurdziel, A Ton, B Turkbey, P M Jacobs, S Bhattacharyya, A P Chen, J M Collins, J H Doroshow, P L Choyke, M L Lindenberg
BACKGROUND: Z-endoxifen is the most potent of the metabolites of tamoxifen, and has the potential to be more effective than tamoxifen because it bypasses potential drug resistance mechanisms attributable to patient variability in the expression of the hepatic microsomal enzyme CYP2D6. (18)F-FES is a positron emission tomography (PET) imaging agent which selectively binds to estrogen receptor alpha (ER-α) and has been used for non-invasive in vivo assessment of ER activity in tumors. This study utilizes (18)F-FES PET imaging as a pharmacodynamic biomarker in patients with ER+ tumors treated with Z-endoxifen...
November 21, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27862063/comparative-expression-analysis-of-hypoxia-inducible-factor-alpha-and-its-natural-occurring-antisense-in-breast-cancer-tissues-and-adjacent-noncancerous-tissues
#8
Behnoosh Tasharrofi, Mohammad Soudyab, Elahe Nikpayam, Mostafa Iranpour, Reza Mirfakhraie, Shaghayegh Sarrafzadeh, Lobat Geranpayeh, Eznollah Azargashb, Arezou Sayad, Soudeh Ghafouri-Fard
Hypoxia-inducible factors (HIFs) have been shown to be upregulated in tumor tissues and linked with tumor progression and metastasis in breast cancer. Among regulatory mechanisms for HIF expression is a natural occurring antisense named aHIF, which has been shown to be overexpressed in breast cancer and influence the level of the HIF-1α transcript. In the present study, we analyzed the expression of HIF-1α and aHIF in breast cancer tissues versus adjacent noncancer tissues (ANCTs) in relation with the clinical and biological behavior of the tumors...
November 12, 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27853906/downregulation-of-estrogen-receptor-and-modulation-of-growth-of-breast-cancer-cell-lines-mediated-by-paracrine-stromal-cell-signals
#9
J Huang, P Woods, D Normolle, J P Goff, P V Benos, C J Stehle, R A Steinman
PURPOSE: Breast cancers have a poorer prognosis if estrogen receptor expression was lost during recurrence. It is unclear whether this conversion is cell autonomous or whether it can be promoted by the microenvironment during cancer dormancy. We explored the ability of marrow-derived stromal cell lines to arrest co-cultured breast cancer cells and suppress estrogen receptor alpha (ER) expression during arrest, facilitating the emergence of estrogen-independent breast cancer clones. METHODS: Cancer cell growth, ER protein, microRNA, and mRNA levels were measured in breast cancer cell lines exposed to conditioned medium from marrow stromal lines in the presence and absence of estrogen and of signaling pathway modulators...
November 16, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27848152/the-presence-and-impact-of-estrogen-metabolism-on-the-biology-of-triple-negative-breast-cancer
#10
Keely May McNamara, Saki Oguro, Fumiya Omata, Kyoko Kikuchi, Fouzia Guestini, Koyu Suzuki, Yang Yang, Eriko Abe, Hisashi Hirakawa, Kristy A Brown, Ishida Takanori, Noriaki Ohuchi, Hironobu Sasano
PURPOSE: While triple-negative breast cancer (TNBC) is negative for estrogen receptor alpha, a substantial proportion of carcinomas express estrogen receptor beta (ERβ); consequently, estrogen actions and metabolism may be relevant in this cancer subtype. METHODS: A cohort of 81 TNBC patients from Tohoku University Hospital, Japan were characterised with regard to the expression of estrogen receptor beta and enzymes known to modulate levels of estrogens in breast and other tissues (Aromatase, 17-beta- Hydroxysteroid dehydrogenases 1, 2 and 6)...
November 15, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27842943/raloxifene-increases-prefrontal-activity-during-emotional-inhibition-in-schizophrenia-based-on-estrogen-receptor-genotype
#11
Jochen Kindler, Cynthia Shannon Weickert, Peter R Schofield, Rhoshel Lenroot, Thomas W Weickert
People with schizophrenia show decreased prefrontal cortex (PFC) activity during emotional response inhibition, a cognitive process sensitive to hormonal influences. Raloxifene, a selective estrogen receptor modulator, binds estrogen receptor alpha (ESR-α), improves memory, attention and normalizes cortical and hippocampal activity during learning and emotional face recognition in schizophrenia. Here, we tested the extent to which raloxifene restores neuronal activity during emotional response inhibition in schizophrenia...
November 11, 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27837311/17%C3%AE-estradiol-induced-interaction-of-estrogen-receptor-%C3%AE-and-human-atrial-essential-myosin-light-chain-modulates-cardiac-contractile-function
#12
Karolin Duft, Miriam Schanz, Hang Pham, Ahmed Abdelwahab, Cindy Schriever, Georgios Kararigas, Elke Dworatzek, Mercy M Davidson, Vera Regitz-Zagrosek, Ingo Morano, Shokoufeh Mahmoodzadeh
Chronic increased workload of the human heart causes ventricular hypertrophy, re-expression of the atrial essential myosin light chain (hALC-1), and improved contractile function. Although hALC-1 is an important positive inotropic regulator of the human heart, little is known about its regulation. Therefore, we investigated the role of the sex hormone 17β-estradiol (E2) on hALC-1 gene expression, the underlying molecular mechanisms, and the impact of this regulatory process on cardiac contractile function...
January 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/27835593/orai3-is-a-predictive-marker-of-metastasis-and-survival-in-resectable-lung-adenocarcinoma
#13
Nazim Benzerdjeb, Henri Sevestre, Ahmed Ahidouch, Halima Ouadid-Ahidouch
Orai3 channel has emerged as important player in malignant transformation. Indeed, its expression is increased in cancer and favors cell proliferation and survival by permitting calcium influx. In this study, Orai3 was overexpressed in lung adenocarcinoma as compared to their matched non-tumour samples and was associated with tumoural aggressiveness. Moreover, its expression was associated with estrogen receptor alpha (ERα) expression and visceral pleural invasion in multivariate analysis. Furthermore, both the overall survival (OS) median and the metastasis free survival (MFS) median of tumors with high Orai3 expression were lower than in low Orai3 expression regardless of cancer stage (35...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27832168/identification-of-potential-novel-biomarkers-and-signaling-pathways-related-to-otitis-media-induced-by-diesel-exhaust-particles-using-transcriptomic-analysis-in-an-in-vivo-system
#14
Hyo Jeong Kim, So Young Kim, Jee Young Kwon, Yeo Jin Kim, Seung Hun Kang, Won-Hee Jang, Jun Ho Lee, Myung-Whan Seo, Jae-Jun Song, Young Rok Seo, Moo Kyun Park
INTRODUCTION: Air pollutants are associated with inflammatory diseases such as otitis media (OM). Significantly higher incidence rates of OM are reported in regions with air pollution. Diesel exhaust particles (DEPs) comprise a major class of contaminants among numerous air pollutants, and they are characterized by a carbonic mixture of polycyclic aromatic hydrocarbons (PAHs), nitro-PAHs, and small amounts of sulfate, nitrate, metals and other trace elements. DEP exposure is a risk factor for inflammatory diseases...
2016: PloS One
https://www.readbyqxmd.com/read/27825720/ginsenoside-rd-promotes-non-amyloidogenic-pathway-of-amyloid-precursor-protein-processing-by-regulating-phosphorylation-of-estrogen-receptor-alpha
#15
Xiaodong Yan, Gengyao Hu, Weiming Yan, Tao Chen, Feng Yang, Xiao Zhang, Gang Zhao, Juanfang Liu
AIMS: Previous study demonstrated that Ginsenoside Rd. (GS-Rd) could improve cognitive and memory function in animal model of Alzheimer's Disease. This study was aimed to investigate whether GS-Rd. could improve non-amyloidogenic pathway by activating estrogen receptor (ER). MAIN METHODS: 10mg/kg GS-Rd. in ovariectomy (OVX)+GS-Rd. group and equivalent volume of saline in sham operated group and OVX group were administrated intraperitoneally for two months, respectively...
November 4, 2016: Life Sciences
https://www.readbyqxmd.com/read/27814578/lipid-raft-er-signalosome-malfunctions-in-menopause-and-alzheimer-s-disease
#16
Ana Canerina-Amaro, Luis G Hernandez-Abad, Isidre Ferrer, David Quinto-Alemany, Fatima Mesa-Herrera, Carla Ferri, Ricardo A Puertas-Avendano, Mario Diaz, Raquel Marin
The increase in the incidence of Alzheimer's disease (AD) in old women may be attributable to estrogen deficiency, and estrogen replacement therapy may be useful in preventing or delaying the onset of this disease. In neuronal membranes, 17 beta-estradiol interacts with estrogen receptors (mERs) located in lipid raft signalosomes which trigger neuroprotective responses by anchoring to scaffolding caveolin-1 complexed with other proteins. We suggest that mER-signalosome malfunctions in AD and by menopause due to development of aberrations in these microstructures...
January 1, 2017: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/27813137/generalized-multinucleate-cell-angiohistiocytoma-case-report-and-literature-review
#17
Ming Wang, Bilal Abdul-Fattah, Cuiyan Wang, Yun Zhao, Xiaoying Qu, Maher Al-Muriesh, Xia Wang, Li Zhu, Yue Qian, Changzheng Huang, Siyuan Chen
BACKGROUND: Multinucleate cell angiohistiocytoma (MCAH) is an uncommon benign fibrohistiocytic and vascular proliferation, which usually occurs as slow-growing grouped reddish-brown to purple papules and nodules on the distal extremities or face. Patients with generalized MCAH are extremely rare and to our knowledge, there are no more than 11 cases reported previously in the medical literature. OBJECTIVE: To describe the clinical, histopathologic features and immunohistochemical characteristics of all reported cases of generalized MCAH and investigate any potential clinicopathological correlations...
November 4, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27808402/differential-expression-of-estrogen-receptor-variants-in-response-to-inflammation-signals-in-human-airway-smooth-muscle
#18
Bharathi Aravamudan, Katelyn J Goorhouse, Ghanashyam Unnikrishnan, Michael A Thompson, Christina M Pabelick, John R Hawse, Y S Prakash, Venkatachalem Sathish
The prevalence of asthma is higher in pre-pubescent and aging males, and in post-pubertal females, strongly indicating that sex steroids (especially estrogen) may be an important modulator in lung disease. We recently demonstrated that airway smooth muscle (ASM) expresses both alpha and beta forms of the estrogen receptor (ERα and ERβ) in males and females, and that these receptors regulate intracellular [Ca2 +] and ASM contractility. While both ERα and ERβ have multiple splice variants, it is unclear if and how the expression of these variants is modulated under conditions such as chronic inflammation/ asthma...
November 3, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27806114/regulation-of-il-20-expression-by-estradiol-through-kmt2b-mediated-epigenetic-modification
#19
Chia-Hsin Su, I-Hsuan Lin, Tsai-Yu Tzeng, Wen-Ting Hsieh, Ming-Ta Hsu
Cytokines are low molecular weight regulatory proteins, or glycoproteins, with both tumor-promoting and inhibitory effects on breast cancer growth. Different cytokines play important roles in breast cancer initiation and progression. Here, we show that of the 39 interleukin (IL) genes, IL-20 is the only gene over-expressed in MCF-7 cells treated with estradiol (E2) and that induction of IL-20 expression by estrogen was epigenetically regulated. Methylation of histone H3K4 in the IL-20 promoter was shown to occur via the specific recruitment of KMT2B by estrogen receptor alpha (ERα), but not by other members of the mixed-lineage leukemia (MLL) family of histone methyltransferases...
2016: PloS One
https://www.readbyqxmd.com/read/27802428/effect-of-melatonin-on-telocytes-in-the-seminal-vesicle-of-the-soay-ram-an-immunohistochemical-ultrastructural-and-morphometrical-study
#20
Hanan H Abd-Elhafeez, Doaa M Mokhtar, Ahmed H S Hassan
Telocytes (TCs) are a special type of interstitial cell with characteristic cellular processes that are described in many organs. The current study aimed to investigate TCs in seminal vesicles of the Soay ram responding to melatonin treatment during the nonbreeding season by conventional immunohistochemical stains, and to detect the ultrastructural and morphometrical changes of TCs. TCs in the control group showed a broad range of staining affinity and also reacted positively to CD117/c-kit, CD34, desmin, S-100 protein, and progesterone and estrogen receptors alpha, while after melatonin treatment a strong reaction against these 6 antibodies was recorded...
November 2, 2016: Cells, Tissues, Organs
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