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https://www.readbyqxmd.com/read/29127736/liver-x-receptor-activation-inhibits-sglt2-mediated-glucose-transport-in-human-renal-proximal-tubular-cells
#1
Pattira Chonlaket, Teerasak Wongwan, Sunhapas Soodvilai
Liver X receptors (LXRs) are members of a nuclear receptor family consisting of two isoforms, LXR-α and LXR-β. They play a major role in energy metabolism including lipid and glucose metabolism. Recent studies reported LXRs regulate plasma glucose although the mechanism is still uncertain. The present study investigated whether LXR activation regulates sodium glucose cotransporter2 (SGLT2) in human renal proximal tubular cells. LXR agonists, T0901317 and GW3965, inhibited SGLT2-mediated glucose uptake in concentration-dependent manners...
November 11, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29102679/cutaneous-t-cell-lymphomas-focusing-on-novel-agents-in-relapsed-and-refractory-disease
#2
REVIEW
Lisa Argnani, Alessandro Broccoli, Pier Luigi Zinzani
Patients with relapsed or refractory cutaneous T-cell lymphoma (CTCL) display a dismal prognosis and their therapy represents an unmet medical need, as the best treatment strategy is yet to be determined. Exciting data on novel targeted agents are now emerging from recently concluded and ongoing clinical trials in patients with relapsed and refractory CTCL. Three FDA approved compounds are used as single agents including the oral retinoid bexarotene and histone deacetylase inhibitors romidepsin and vorinostat...
October 28, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29044016/drug-induced-hypothyroidism
#3
Leonardo F L Rizzo, Daniela L Mana, Héctor A Serra
The thyroid axis is particularly prone to interactions with a wide variety of drugs, whose list increases year by year. Hypothyroidism is the most frequent consequence of drug-induced thyroid dysfunction. The main mechanisms involved in the development of primary hypothyroidism are: inhibition of the synthesis and/or release of thyroid hormones, immune mechanisms related to the use of interferon and other cytokines, and the induction of thyroiditis associated with the use of tyrosine kinase inhibitors and drugs blocking the receptors for vascular endothelial growth factor...
2017: Medicina
https://www.readbyqxmd.com/read/28981706/insights-into-interplay-between-rexinoid-signaling-and-myogenic-regulatory-factor-associated-chromatin-state-in-myogenic-differentiation
#4
Munerah Hamed, Saadia Khilji, Katherine Dixon, Alexandre Blais, Ilya Ioshikhes, Jihong Chen, Qiao Li
While skeletal myogenesis is tightly coordinated by myogenic regulatory factors including MyoD and myogenin, chromatin modifications have emerged as vital mechanisms of myogenic regulation. We have previously established that bexarotene, a clinically approved agonist of retinoid X receptor (RXR), promotes the specification and differentiation of skeletal muscle lineage. Here, we examine the genome-wide impact of rexinoids on myogenic differentiation through integral RNA-seq and ChIP-seq analyses. We found that bexarotene promotes myoblast differentiation through the coordination of exit from the cell cycle and the activation of muscle-related genes...
September 13, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28961843/global-patterns-of-care-in-advanced-stage-mycosis-fungoides-sezary-syndrome-a-multicenter-retrospective-follow-up-study-from-the-cutaneous-lymphoma-international-consortium
#5
P Quaglino, M Maule, H M Prince, P Porcu, S Horwitz, M Duvic, R Talpur, M Vermeer, M Bagot, J Guitart, E Papadavid, J A Sanches, E Hodak, M Sugaya, E Berti, P Ortiz-Romero, N Pimpinelli, O Servitje, A Pileri, P L Zinzani, T Estrach, R Knobler, R Stadler, M T Fierro, S Alberti Violetti, I Amitay-Laish, C Antoniou, C Astrua, S Chaganti, F Child, A Combalia, S Fabbro, P Fava, V Grandi, C Jonak, E Martinez-Escala, M Kheterpal, E J Kim, C McCormack, T Miyagaki, D Miyashiro, S Morris, C Muniesa, V Nikolaou, G Ognibene, F Onida, S Osella-Abate, S Porkert, C Postigo-Llorente, C Ram-Wolff, S Ribero, K Rogers, M Sanlorenzo, R Stranzenbach, N Spaccarelli, A Stevens, D Zugna, A H Rook, L J Geskin, R Willemze, S Whittaker, R Hoppe, J Scarisbrick, Y Kim
Background: Advanced-stage mycosis fungoides (MF)/Sézary syndrome (SS) patients are weighted by an unfavorable prognosis and share an unmet clinical need of effective treatments. International guidelines are available detailing treatment options for the different stages but without recommending treatments in any particular order due to lack of comparative trials. The aims of this second CLIC study were to retrospectively analyze the pattern of care worldwide for advanced-stage MF/SS patients, the distribution of treatments according to geographical areas (USA versus non-USA), and whether the heterogeneity of approaches has potential impact on survival...
October 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28872641/polyunsaturated-fatty-acid-deficiency-during-neurodevelopment-in-mice-models-the-prodromal-state-of-schizophrenia-through-epigenetic-changes-in-nuclear-receptor-genes
#6
M Maekawa, A Watanabe, Y Iwayama, T Kimura, K Hamazaki, S Balan, H Ohba, Y Hisano, Y Nozaki, T Ohnishi, M Toyoshima, C Shimamoto, K Iwamoto, M Bundo, N Osumi, E Takahashi, A Takashima, T Yoshikawa
The risk of schizophrenia is increased in offspring whose mothers experience malnutrition during pregnancy. Polyunsaturated fatty acids (PUFAs) are dietary components that are crucial for the structural and functional integrity of neural cells, and PUFA deficiency has been shown to be a risk factor for schizophrenia. Here, we show that gestational and early postnatal dietary deprivation of two PUFAs-arachidonic acid (AA) and docosahexaenoic acid (DHA)-elicited schizophrenia-like phenotypes in mouse offspring at adulthood...
September 5, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28805086/brentuximab-vedotin-therapy-for-cd30-positive-cutaneous-t-cell-lymphoma-a-targeted-approach-to-management
#7
Julia J Scarisbrick
CD30-positive primary cutaneous T-cell lymphoma (CTCL) includes mycosis fungoides, anaplastic large-cell lymphoma and lymphomatoid papulosis type A. Brentuximab vedotin (BV) consists of an antibody targeting CD30 with a protease-cleavable linker to vedotin. CD30 binding allows internalization of BV inducing cell-cycle arrest and apoptosis. Response rates >75% with manageable adverse effects in refractory Hodgkin lymphoma and systemic anaplastic large-cell lymphoma led to accelerated approval for both. Phase II studies in CD30-expressing CTCL followed and showed similar efficacy, which was ratified in a Phase III trial of BV versus physician's choice (methotrexate or bexarotene) showing significant improved responses without increase in severe adverse effects although peripheral neuropathy is frequent...
August 14, 2017: Future Oncology
https://www.readbyqxmd.com/read/28804273/influence-of-the-number-of-axial-bexarotene-ligands-on-the-cytotoxicity-of-pt-iv-analogs-of-oxaliplatin
#8
Yulia N Nosova, Ilia V Zenin, Varvara P Maximova, Ekaterina M Zhidkova, Kirill I Kirsanov, Ekaterina A Lesovaya, Anna A Lobas, Mikhail V Gorshkov, Olga N Kovaleva, Elena R Milaeva, Markus Galanski, Bernhard K Keppler, Alexey A Nazarov
We present the synthesis and cytotoxic potencies of new Pt(IV) complexes with bexarotene, an anticancer drug that induces cell differentiation and apoptosis via selective activation of retinoid X receptors. In these complexes bexarotene is positioned as an axial ligand. The complex of one bexarotene ligand attached to Pt(IV) oxaliplatin moiety was potent whereas its counterpart carrying two bexarotene ligands was inactive.
2017: Bioinorganic Chemistry and Applications
https://www.readbyqxmd.com/read/28770285/-treatment-of-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#9
REVIEW
J P Nicolay, C Assaf
Adequate therapeutic management of cutaneous T-cell lymphoma (CTCL) requires the identification of the exact CTCL stage and entity within the current WHO classification. There is no curative therapy for CTCL yet, so that treatment currently aims at improving symptoms and quality of life as well as reducing relapse rates. The treatment has to be stage-adapted. Therapeutic options comprise skin-directed as well as systemic treatment. In early stages, phototherapy and local steroids are the first-line therapeutic options...
September 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28753292/synthesis-of-11-c-labeled-rxr-partial-agonist-1-3-5-5-8-8-pentamethyl-5-6-7-8-tetrahydronaphthalen-2-yl-amino-benzotriazole-5-carboxylic-acid-cbt-pmn-by-direct-11-c-carbon-dioxide-fixation-via-organolithiation-of-trialkyltin-precursor-and-pet-imaging-thereof
#10
Osamu Shibahara, Masaki Watanabe, Shoya Yamada, Masaru Akehi, Takanori Sasaki, Akiya Akahoshi, Takahisa Hanada, Hiroyuki Hirano, Shunsuke Nakatani, Hiromi Nishioka, Yasuo Takeuchi, Hiroki Kakuta
The retinoid X receptor (RXR) partial agonist 1-[(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)amino]benzotriazole-5-carboxylic acid (1; CBt-PMN, Emax = 75%, EC50 = 143 nM) is a candidate for treatment of central nervous system (CNS) diseases such as Alzheimer's and Parkinson's diseases based on reports that RXR-full agonist 4-[1-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)ethynyl]benzoic acid (bexarotene) shows therapeutic effects on these disease in rodent models. Here, we synthesized carbon-11-labeled ([(11)C]1) as a tracer for positron emission tomography (PET) and used it in a PET imaging study to examine the brain uptake and biodistribution of 1...
August 24, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28748653/oral-bexarotene-for-post-transplant-cutaneous-t-cell-lymphoma
#11
Daniel J Lewis, Simo Huang, Madeleine Duvic
Organ transplant recipients receiving immunosuppression have an increased risk of developing post-transplant lymphoproliferative diseases (PTLDs). Traditionally, PTLDs refer to Epstein-Barr virus (EBV)-induced B-cell lymphoma. However, post-transplant T-cell lymphoma may also occur and tends to have a poorer response to reduced immunosuppressive therapy. As such, additional therapy is often needed for post-transplant T-cell lymphoma, including post-transplant cutaneous T-cell lymphoma (PT-CTCL). We present only the third case of PT-CTCL occurring after liver transplantation...
July 26, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28689412/bexarotene-does-not-clear-amyloid-beta-plaques-but-delays-fibril-growth-molecular-mechanisms
#12
Pham Dinh Quoc Huy, Nguyen Quoc Thai, Zuzana Bednarikova, Le Huu Phuc, Huynh Quang Linh, Zuzana Gazova, Mai Suan Li
In 2012, it was reported that anticancer drug bexarotene reduced amyloid plaque and improved mental functioning in a small sample of mice engineered to exhibit Alzheimer's like symptoms. It has been suggested that bexarotene stimulates expression of apolipoprotein E (ApoE) leading to intracellular clearance of amyloid beta (Aβ). However, the effect of bexarotene on clearance of plaques has not been seen in some mouse models. Two interesting questions include whether bexarotene can destroy Aβ fibrils via direct interaction with them and how this compound impacts the lag phase in the fibril growth process...
July 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28687611/vitamin-a-regulates-akt-signaling-through-the-phospholipid-fatty-acid-composition
#13
Helmut Pein, Solveigh C Koeberle, Maria Voelkel, Freya Schneider, Antonietta Rossi, Maria Thürmer, Konstantin Loeser, Lidia Sautebin, Helen Morrison, Oliver Werz, Andreas Koeberle
Protein kinases, including the serine/threonine kinase Akt, mediate manifold bioactivities of vitamin A, although the mechanisms behind the sustained kinase activation are diffuse. To investigate the role of cellular lipids as targetable factors in Akt signaling, we combined mass spectrometry-based lipidomics with immunologic detection of Akt (Ser473) phosphorylation. A screening campaign revealed retinol (vitamin A alcohol) and all-trans retinoic acid (vitamin A acid) (RA) as hits that time-dependently (≥24 h) deplete phosphatidylcholine-bound polyunsaturated fatty acids (PUFA-PCs) from NIH-3T3 mouse fibroblasts while inducing Akt activation (EC50 ≈ 0...
October 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28648516/-mycosis-fungoides-in-a-heart-transplant-recipient
#14
Q Bodard, N Litrowski, D Carre, M Midhat, P Chenal, P Bravard
BACKGROUND: Skin cancer occurs frequently in organ transplant patients as a result of induced immunosuppression. Most cases involve carcinomas or B-cell lymphomas induced by the Epstein Barr virus (EBV). Cutaneous T-cell lymphomas remain rare. We report a case of cutaneous T-cell lymphoma of the mycosis fungoides type in a heart transplant recipient. PATIENTS AND METHODS: A 68-year-old man who had received a heart transplant 21years earlier and was being treated with tacrolimus, mycophenolate mofetil and prednisolone had been presenting a psoriasiform rash on his trunk, limbs and head for 4years...
October 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28641286/effect-of-bexarotene-on-platelet-activation-and-apoptosis
#15
Hang Cao, Rosi Bissinger, Anja T Umbach, Meinrad Gawaz, Florian Lang
BACKGROUND/AIMS: The retinoid X receptor (RXRs) stimulator Bexarotene ((4-[1-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydro-2-naphthyl)ethynyl] benzoic acid) is used for the treatment of several malignancies. Bexarotene is at least in part effective by stimulation of apoptosis of tumor cells. Moreover, Bexarotene triggers eryptosis, the suicidal death of erythrocytes. Similar to erythrocytes, blood platelets lack nuclei but are nevertheless able to enter an apoptosis-like phenotype, characterized by caspase activation, cell shrinkage and cell membrane scrambling with phospha-tidylserine translocation to the cell surface...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28600132/brentuximab-vedotin-or-physician-s-choice-in-cd30-positive-cutaneous-t-cell-lymphoma-alcanza-an-international-open-label-randomised-phase-3-multicentre-trial
#16
H Miles Prince, Youn H Kim, Steven M Horwitz, Reinhard Dummer, Julia Scarisbrick, Pietro Quaglino, Pier Luigi Zinzani, Pascal Wolter, Jose A Sanches, Pablo L Ortiz-Romero, Oleg E Akilov, Larisa Geskin, Judith Trotman, Kerry Taylor, Stephane Dalle, Michael Weichenthal, Jan Walewski, David Fisher, Brigitte Dréno, Rudolf Stadler, Tatyana Feldman, Timothy M Kuzel, Yinghui Wang, Maria Corinna Palanca-Wessels, Erin Zagadailov, William L Trepicchio, Wenwen Zhang, Hui-Min Lin, Yi Liu, Dirk Huebner, Meredith Little, Sean Whittaker, Madeleine Duvic
BACKGROUND: Cutaneous T-cell lymphomas are rare, generally incurable, and associated with reduced quality of life. Present systemic therapies rarely provide reliable and durable responses. We aimed to assess efficacy and safety of brentuximab vedotin versus conventional therapy for previously treated patients with CD30-positive cutaneous T-cell lymphomas. METHODS: In this international, open-label, randomised, phase 3, multicentre trial, we enrolled adult patients with CD30-positive mycosis fungoides or primary cutaneous anaplastic large-cell lymphoma who had been previously treated...
August 5, 2017: Lancet
https://www.readbyqxmd.com/read/28540091/a-severe-case-of-lymphomatoid-papulosis-type-e-successfully-treated-with-interferon-alfa-2a
#17
Aslı Bilgiç Temel, Betül Unal, Hatice Erdi Şanlı, Şeniz Duygulu, Soner Uzun
Lymphomatoid papulosis (LyP) is a benign papulonodular skin eruption with histologic features of malignant lymphoma. A new variant of LyP which was termed "type E" was recently described with similar clinical and histological features to angiocentric and angiodestructive T-cell lymphoma. LyP type E is characterized with recurrent papulonodular lesions which rapidly turn into hemorrhagic necrotic ulcers and spontaneous regression by leaving a scar. None of the available treatment modalities affects the natural course of LyP...
2017: Case Reports in Dermatological Medicine
https://www.readbyqxmd.com/read/28512419/successful-treatment-of-primary-cutaneous-peripheral-t-cell-lymphoma-presenting-acquired-ichthyosis-with-oral-bexarotene-monotherapy
#18
Kayo Tanita, Taku Fujimura, Yota Sato, Takanori Hidaka, Sadanori Furudate, Yumi Kambayashi, Akira Tsukada, Akira Hashimoto, Setsuya Aiba
Acquired ichthyosis (AI) is a reactive cutaneous manifestation that can be associated with malignant hematological disease, including cutaneous T-cell lymphoma (CTCL). Since it is difficult to distinguish AI from ichthyosiform mycosis fungoides, to select the treatment for CTCL with ichthyosis-like appearance and to evaluate its efficacy is sometimes challenging. In this report, we describe a case of primary cutaneous peripheral T-cell lymphoma not otherwise specified presenting AI successfully treated with oral bexarotene...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28483659/the-long-non-coding-rna-neat1-is-an-important-mediator-of-the-therapeutic-effect-of-bexarotene-on-traumatic-brain-injury-in-mice
#19
Jianjun Zhong, Li Jiang, Zhijian Huang, Hongrong Zhang, Chongjie Cheng, Han Liu, Junchi He, Jingchuan Wu, Rami Darwazeh, Yue Wu, Xiaochuan Sun
OBJECTIVE: Bexarotene treatments exert neuroprotective effects on mice following traumatic brain injury (TBI). The present study aims to investigate the potential roles of the long noncoding RNA Neat1 in the neuroprotective effects of bexarotene. MATERIALS AND METHODS: Adult male C57BL/6J mice (n=80) and newborn mice (within 24h after birth) (n=20) were used to generate a "controlled cortical impact" (CCI) model and harvest primary cortex neurons, respectively. The HT22 cell line and the BV2 cell line were cultured under "normal" or "oxygen/glucose-deprived" (OGD) conditions...
May 5, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28469839/gene-expression-profiling-discerns-molecular-pathways-elicited-by-ligand-signaling-to-enhance-the-specification-of-embryonic-stem-cells-into-skeletal-muscle-lineage
#20
REVIEW
Katherine Dixon, Jihong Chen, Qiao Li
Regulation of lineage specification and differentiation in embryonic stem (ES) cells can be achieved through the activation of endogenous signaling, an avenue for potential application in regenerative medicine. During vertebrate development, retinoic acid (RA) plays an important role in body axis elongation and mesoderm segmentation in that graded exposure to RA provides cells with positional identity and directs commitment to specific tissue lineages. Nevertheless, bexarotene, a clinically approved rexinoid, enhances the specification and differentiation of ES cells into skeletal myocytes more effectively than RA...
2017: Cell & Bioscience
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