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Steroid responsiveness

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https://www.readbyqxmd.com/read/29793095/sex-hormones-affect-acute-and-chronic-stress-responses-in-sexually-dimorphic-patterns-consequences-for-depression-models
#1
Lei Guo, Yi-Xi Chen, Yu-Ting Hu, Xue-Yan Wu, Yang He, Juan-Li Wu, Man-Li Huang, Matthew Mason, Ai-Min Bao
BACKGROUND: Alterations in peripheral sex hormones may play an important role in sex differences in terms of stress responses and mood disorders. It is not yet known whether and how stress-related brain systems and brain sex steroid levels fluctuate in relation to changes in peripheral sex hormone levels, or whether the different sexes show different patterns. We aimed to investigate systematically, in male and female rats, the effect of decreased circulating sex hormone levels following gonadectomy on acute and chronic stress responses, manifested as changes in plasma and hypothalamic sex steroids and hypothalamic stress-related molecules...
May 21, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29792880/molecular-alterations-during-larval-development-of-haemonchus-contortus-in-vitro-are-under-tight-post-transcriptional-control
#2
Guangxu Ma, Tao Wang, Pasi K Korhonen, Ching-Seng Ang, Nicholas A Williamson, Neil D Young, Andreas J Stroehlein, Ross S Hall, Anson V Koehler, Andreas Hofmann, Robin B Gasser
In this study, we explored the molecular alterations in the developmental switch from the L3 to the exsheathed L3 (×L3) and to the L4 stage of Haemonchus contortus in vitro using an integrated transcriptomic, proteomic and bioinformatic approach. Totals of 9,754 mRNAs, 88 microRNAs (miRNAs) and 1,591 proteins were identified, and 6,686 miRNA-mRNA pairs inferred in all larval stages studied. Approximately 16% of transcripts in the combined transcriptome (representing all three larval stages) were expressed as proteins, and there were positive correlations (r = 0...
May 22, 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29789528/yap-dependent-ubiquitination-and-degradation-of-%C3%AE-catenin-mediates-inhibition-of-wnt-signalling-induced-by-physalin-f-in-colorectal-cancer
#3
Chen Chen, Dongrong Zhu, Hao Zhang, Chao Han, Guimin Xue, Tianyu Zhu, Jianguang Luo, Lingyi Kong
Aberrant activation of Wnt/β-catenin signalling is critical in the progression of human cancers, especially colorectal cancer (CRC). Therefore, inhibition of Wnt/β-catenin signalling is a significant potential target for CRC therapy. Here, we identified for the first time that Physalin F (PF), a steroid derivative isolated from Physalis angulate, acts as an antagonist of Wnt/β-catenin signalling. In vitro, PF decreased Wnt3a-induced TOPFlash reporter activity in HEK293T cells and promoted the formation of the β-catenin destruction complex...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29788733/sulindac-induces-differentiation-of-glioblastoma-stem-cells-making-them-more-sensitive-to-oxidative-stress
#4
S Kesaraju Allani, H Weissbach, M A Lopez Toledano
Glioblastoma tumors (GBM) are very heterogeneous, being comprised of several cell subtypes, including glioblastoma stem cells (GSC). These tumors have a high rate of recurrence after initial treatment and one of the most prevalent theories to explain this is the cancer stem cell theory, which proposes that glioblastomas arise from mutations that transform normal neural stem cells (NSC) into GSC, which are highly resistant to oxidative stress and anti-cancer therapies. Sulindac is a non-steroidal anti-inflammatory drug (NSAID) that has been shown to protect the normal cells against oxidative damage by initiating a preconditioning response, but selectively sensitizes several cancer cell lines to agents that affect mitochondrial respiration, resulting in enhanced killing of the cancer cells...
March 14, 2018: Neoplasma
https://www.readbyqxmd.com/read/29788357/reproductive-physiological-and-molecular-outcomes-in-female-mice-deficient-in-dhh-and-ihh
#5
Chang Liu, Karina F Rodriguez, Paula R Brown, Humphrey H-C Yao
Ovarian development requires coordinate communications between oocytes, granulosa cells, and theca cells. Two Hedgehog (Hh) pathway ligands, desert (Dhh) and indian hedgehog (Ihh), are produced by the granulosa cells and work together to regulate theca cell specification and development. Mice lacking both Dhh and Ihh resulted in the loss of normal ovarian function and raised the question of which biological actions are specifically controlled by each ligand during folliculogenesis. By comparing the reproductive fitness, hormonal profiles, and ovarian transcriptomes between control, Dhh single knockout, Ihh single knockout, and Dhh/Ihh double knockout mice, we examined the specific roles of Dhh and Ihh in these processes...
May 16, 2018: Endocrinology
https://www.readbyqxmd.com/read/29788024/extracorporeal-photopheresis-an-efficacious-and-well-tolerated-treatment-for-cutaneous-and-oral-mucosal-chronic-graft-versus-host-disease
#6
Camille Richet, Anne Huynh, Chloé Dimeglio, Cécile Borel, Benoît Lepage, Serge Boulinguez, Marie Claude Marguery, Carle Paul, Cristina Bulai Livideanu
BACKGROUND: Extracorporeal photopheresis (ECP) is a second-line therapy for steroid-refractory chronic graft-versus-host disease (cGVHD). OBJECTIVE: We describe the long-term efficacy and tolerability of ECP according to the cutaneous phenotype of cGVHD and report on the reduced need for immunosuppressant drugs in this setting. PATIENTS AND METHODS: Fourteen patients (8 females) with cutaneous and/or mucosal cGVHD, treated with ECP between October 2010 and May 2016 within a single center, were included...
May 22, 2018: Dermatology: International Journal for Clinical and Investigative Dermatology
https://www.readbyqxmd.com/read/29787602/endocrine-disrupting-potency-of-organic-pollutant-mixtures-isolated-from-commercial-fish-oil-evaluated-in-yeast-based-bioassays
#7
Marek Łukasz Roszko, Marta Kamińska, Krystyna Szymczyk, Katarzyna Piasecka-Jóźwiak, Beata Chabłowska
The aim of this work was to evaluate the activity of xenobiotic mixtures containing persistent organic pollutants isolated from commercial fish oil samples against sex hormone receptors, including estrogen and androgen. The applied bioassay was based on transgenic yeast strains. The mixtures were extracted from the samples using the semi-permeable membrane dialysis technique and analyzed with gas chromatography/ion trap mass spectrometry. It turned out that mixtures of chemicals isolated from fish oil may interact with human steroid sex hormone receptors in various ways: the tested samples showed both estrogenic and anti-androgenic activity...
2018: PloS One
https://www.readbyqxmd.com/read/29787238/anti-fibrotic-effect-of-ketoprofen-grafted-alginate-microcapsules-in-the-transplantation-of-insulin-producing-cells
#8
François Noverraz, Elisa Montanari, Joël Pimenta, Luca Szabo, Daniel Ortiz, Carmen Gonelle-Gispert, Léo Bühler, Sandrine Gerber-Lemaire
The controlled release of small molecular modulators of the immune response from hydrogel microspheres (MS) used for cell immobilization is an attractive approach to reduce pericapsular fibrotic overgrowth (PFO) after transplantation. Ketoprofen is a well-known non-steroidal anti-inflammatory drug involved in the early stage inflammation cascade. PEGylated derivatives of ketoprofen, presenting either ester or amide linkage to the drug, were synthesized and conjugated to the hydroxyl groups of sodium alginate (Na-alg)...
May 22, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29786798/studies-on-steroid-receptor-coactivators-in-prostate-cancer
#9
Zoran Culig, Frédéric R Santer
High expression of several androgen receptor coactivators is frequently reported in prostate cancer. Coactivators such as p300/CBP are involved in modulation of androgen receptor activity by increasing the effects of androgenic hormones and enhancing agonistic activity of antiandrogens. Studies in the field of prostate cancer frequently examined the role of p300/CBP and SRC-1 (NCOA1). In addition to their effects on steroid receptor activity, coactivators may influence other cellular functions such as migration and invasion...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786007/bilateral-acute-retinal-necrosis-associated-with-bilateral-uveal-effusion-in-an-immunocompetent-patient-a-challenging-association
#10
S Bala Murugan, Girish Bharat Velis, Manavi D Sindal
Bilateral uveal effusion syndrome associated with bilateral acute retinal necrosis is a diagnostic and therapeutic challenge. A 52 year old man presented with bilateral angle closure with choroidal detachment. With restricted fundus view, parenteral steroid was started. During close follow up bilateral discrete areas of peripheral retinitis were noted. Parenteral steroids were promptly stopped and parenteral antivirals with oral steroids were continued. It showed healing response with nil recurrences till last follow up...
June 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29785993/factors-predicting-response-of-pseudophakic-cystoid-macular-edema-to-topical-steroids-and-nepafenac
#11
Sabyasachi Sengupta, Dhaivat Vasavada, Utsab Pan, Manavi Sindal
Purpose: The purpose of this study is to determine factors predicting resolution of acute pseudophakic cystoid macular edema (PCME) after 6 weeks of topical prednisolone and nepafenac application. Methods: Case records of patients with a clinical and optical coherence tomography (OCT)-based diagnosis of acute PCME were retrospectively reviewed for best-corrected visual acuity and OCT-based parameters at the time of presentation with PCME. In addition, demographic variables, intraoperative and early postoperative factors, and type of treatment prescribed (tapering vs...
June 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29785261/aggressive-fibromatosis-response-to-tamoxifen-lack-of-correlation-between-mri-and-symptomatic-response
#12
M Libertini, I Mitra, W T A van der Graaf, A B Miah, I Judson, R L Jones, K Thomas, E Moskovic, Z Szucs, C Benson, C Messiou
Background: One of the commonly used systemic agents for the treatment of aggressive fibromatosis is the anti-oestrogen drug tamoxifen. However, data on efficacy and optimum methods of response assessment are limited, consisting mainly of small case series and reports. Methods: A retrospective database was used to identify consecutive patients diagnosed with aggressive fibromatosis (AF) and treated with tamoxifen plus/minus non-steroidal anti-inflammatory drugs at our tertiary referral centre between 2007 and 2014...
2018: Clinical Sarcoma Research
https://www.readbyqxmd.com/read/29784791/steroid-signaling-mediates-nutritional-regulation-of-juvenile-body-growth-via-igf-binding-protein-in-drosophila
#13
Gang Jun Lee, Gangsik Han, Hyun Myoung Yun, Jin Ju Lim, Sujin Noh, Jaegeun Lee, Seogang Hyun
Nutritional condition during the juvenile growth period considerably affects final adult size. The insulin/insulin-like growth factor signaling (IIS)/target of rapamycin (TOR) nutrient-sensing pathway is known to regulate growth and metabolism in response to nutritional conditions. However, there is limited information on how endocrine pathways communicate nutritional information to different metabolic organs to regulate organismal growth. Here, we show that Imaginal morphogenesis protein-Late 2 (Imp-L2), a Drosophila homolog of insulin-like growth factor-binding protein 7 (IGFBP7), plays a key role in the nutritional control of organismal growth...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29784662/ibuprofen-decreases-spontaneous-activity-and-enhances-nerve-evoked-contractions-to-minimise-mitomycin-c-induced-bladder-dysfunction
#14
Eliza G West, Ryan Lang, Donna Sellers, Russ Chess-Williams, Catherine M McDermott
Inflammation may play a causal role in urological side effects reported following intravesical mitomycin C (MMC). Our aim was to investigate the effects of the non-steroidal anti-inflammatory drug ibuprofen (IBU) on the cytotoxic potency of MMC and the potential for IBU to protect against bladder dysfunction. Malignant (RT4, T24) and normal (UROtsa) urothelial lines were treated with MMC followed by ibuprofen, with cell viability and caspase-3 activity assessed. Female C57BL/6JArc mice (Saline/Control, MMC, Saline + IBU and MMC + IBU), received intravesical treatment (1hr) with saline or MMC (2mg/mL), with IBU (1mg/mL) delivered in drinking water (for 7-days)...
May 21, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29782855/role-of-statins-and-mevalonate-pathway-on-impaired-hdac2-activity-induced-by-oxidative-stress-in-human-airway-epithelial-cells
#15
Maria Gabriella Matera, Luigino Calzetta, Giulia Gritti, Laura Gallo, Brunella Perfetto, Giovanna Donnarumma, Mario Cazzola, Paola Rogliani, Maria Donniacuo, Barbara Rinaldi
In patients with chronic obstructive pulmonary disease (COPD) the inflammatory response is often steroid-resistant, likely since oxidative stress and cigarette smoking impair histone deacetylase 2 (HDAC2) activity. Since it has been demonstrated that statins may restore the HDAC2 activity in cultured human endothelial cells, the aim of this study was to investigate the effects of statins in reversing the steroid-resistance induced by oxidative stress. We evaluated the effects of simvastatin and dexamethasone on HDAC2 expression and activity, and the role of mevalonate and Rho/ROCK pathways in A549 cells, a human lung type II epithelial cell line stressed with H2 O2 ...
May 18, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29782047/greater-occipital-nerve-injection-versus-oral-steroids-for-short-term-prophylaxis-of-cluster-headache-a-retrospective-comparative-study
#16
Jerry Wei, Matthew S Robbins
OBJECTIVE: To investigate our experience with oral steroid and greater occipital nerve (GON) injection with steroid as transitional treatments for cluster headache. BACKGROUND: Cluster headache is a primary headache disorder characterized by multiple episodes of intense unilateral pain with autonomic features. During cluster headache attacks, transitional therapies are useful while prophylactic dosages are initiated or increased. There are limited data comparing the efficacy of oral versus injected transitional treatments...
May 21, 2018: Headache
https://www.readbyqxmd.com/read/29781507/effect-of-estradiol-on-fibroblasts-from-postmenopausal-idiopathic-carpal-tunnel-syndrome-patients
#17
Yoshiaki Yamanaka, Kunitaka Menuki, Takafumi Tajima, Yasuaki Okada, Kenji Kosugi, Yukichi Zenke, Akinori Sakai
Fibrosis of the subsynovial connective tissue (SSCT) is a characteristic finding in patients with idiopathic carpal tunnel syndrome (CTS). Idiopathic CTS frequently occurs in postmenopausal women; therefore, female steroid hormones, especially estrogens, may be involved in its development. In this study, we evaluated the effect of the estradiol on the expression of genes and proteins related to fibrosis of SSCT fibroblasts from patients with idiopathic CTS. This study included 10 postmenopausal women (mean age 76 years)...
May 21, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29781124/sonographic-median-nerve-change-after-steroid-injection-for-carpal-tunnel-syndrome
#18
Jia-Chi Wang, Kon-Ping Lin, Kwong-Kum Liao, Yue-Cune Chang, Kevin A Wang, Yu-Fang Huang, Jan-Wei Chiu
Introduction The sonographic changes of the median nerve after steroid injection for carpal tunnel syndrome (CTS) still require investigation. Methods Sixty-two patients with CTS were included. The Boston Carpal Tunnel Questionnaire was administered and ultrasonographic examinations were performed before and at 2, 6, and 12 weeks after steroid injection. At 12 weeks, general improvement was scored on a 6-point Likert scale. Results After treatment, the cross-sectional area (CSA) of the median nerve was significantly reduced at 2, 6, and 12 weeks follow-up (for each, P < ...
May 20, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29780945/treatment-challenges-in-an-atypical-presentation-of-tubulointerstitial-nephritis-and-uveitis-tinu
#19
Sonny Caplash, Sapna Gangaputra, Shilpa Kodati, Shamir Tuchman, Hemalatha Srinivasalu, H Nida Sen
Purpose: To describe an atypical presentation of Tubulointerstitial Nephritis and Uveitis (TINU), with challenges in treatment course. Observations: A 12-year-old Hispanic female presented to the National Eye Institute's Uveitis clinic with bilateral blurred vision, red eyes and photophobia, not responsive to topical steroids. On exam, she had bilateral severe panuveitis with areas of subretinal fluid. During her evaluation, she was noted to have elevated serum creatinine...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780921/is-it-melanoma-associated-retinopathy-or-drug-toxicity-bilateral-cystoid-macular-edema-posing-a-diagnostic-and-therapeutic-dilemma
#20
Sachi R Patel, Stavros N Moysidis, Nicole Koulisis, Philip P Storey, Amir H Kashani, Narsing A Rao, Damien C Rodger
Purpose: To report the clinical presentation, multimodal imaging, and management of a patient with metastatic melanoma who presented with cystoid macular edema (CME). Observations: We report a case of a 71-year-old Caucasian male with metastatic melanoma who presented with bilateral cystoid macular edema after being on treatment with a programmed T cell death ligand 1 inhibitor, MPDL3280, for 1 year. Multimodal imaging techniques, including color fundus photographs, autofluorescence, spectral domain optical coherence tomography (OCT), fluorescein angiography (Spectralis, Heidelberg, Germany), and spectral-domain OCT angiography (Zeiss; California, USA) were performed to evaluate the etiology of his CME and to monitor his response to treatment...
June 2018: American Journal of Ophthalmology Case Reports
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