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https://www.readbyqxmd.com/read/28324054/ccdc141-mutations-in-idiopathic-hypogonadotropic-hypogonadism
#1
Ihsan Turan, B Ian Hutchins, Bulent Hacihamdioglu, L Damla Kotan, Fatih Gurbuz, Ayca Ulubay, Eda Mengen, Bilgin Yuksel, Susan Wray, A Kemal Topaloglu
Context: GnRH neurons originate outside the central nervous system in the olfactory placode and migrate into the CNS, becoming integral components of the hypothalamic-pituitary-gonadal axis. Failure of this migration can lead to Idiopathic Hypogonadotropic Hypogonadism (IHH)/Kallmann Syndrome (KS). We have previously shown that CCDC141 knockdown leads to impaired migration of GnRH neurons but not of olfactory receptor neurons. Objective: The aim of this study was to further describe the phenotype and prevalence of CCDC141 mutations in IHH/KS...
January 23, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28324034/anti-mullerian-hormone-and-ovarian-morphology-in-women-with-isolated-hypogonadotropic-hypogonadism-kallmann-syndrome-effects-of-recombinant-human-fsh
#2
Hélène Bry-Gauillard, Florence Larrat-Ledoux, Jean-Marc Levaillant, Nathalie Massin, Luigi Maione, Isabelle Beau, Nadine Binart, Philippe Chanson, Sylvie Brailly-Tabard, Janet E Hall, Jacques Young
Context: Isolated hypogonadotropic hypogonadism (IHH), characterized by gonadotropin deficiency and absent puberty, is very rare in women. IHH prevents pubertal ovarian stimulation, but anti-Mullerian hormone (AMH) and antral follicle count (AFC), have not been studied. Objectives: 1) Compare, in IHH versus controls, AMH, ovarian volume (OV) and AFC. 2) Compare in IHH, ovarian responses to recombinant human FSH (rhFSH) and rhFSH plus rhLH. Subjects: 68 IHH women, 51 matched healthy women...
January 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28299652/roles-of-runx2-in-skeletal-development
#3
Toshihisa Komori
Runx2 is the most upstream transcription factor essential for osteoblast differentiation. It regulates the expression of Sp7, the protein of which is a crucial transcription factor for osteoblast differentiation, as well as that of bone matrix genes including Spp1, Ibsp, and Bglap2. Runx2 is also required for chondrocyte maturation, and Runx3 has a redundant function with Runx2 in chondrocyte maturation. Runx2 regulates the expression of Col10a1, Spp1, Ibsp, and Mmp13 in chondrocytes. It also inhibits chondrocytes from acquiring the phenotypes of permanent cartilage chondrocytes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28288899/kisspeptin-10-treatment-generated-specific-gnrh-expression-in-cells-differentiated-from-rhesus-monkey-derived-lyon-nscs
#4
Tanzeel Huma, Xintian Hu, Yuanye Ma, Andrew Willden, Joshua Rizak, Muhammad Shahab, Zhengbo Wang
Embryonic stem cells (ESCs) have enormous potential as novel cell-based therapies, but their effectiveness depends on stem cell differentiation and specific signaling regulators, which remain poorly understood. In this study, a kisspeptin peptide (KP-10) was used at different dosages to determine whether rhesus macaque derived tau GFP-Lyon ES cells underwent kisspeptin specific neuronal differentiation. It was found that KP-10 exhibited an anti-proliferative effect on the cells and led to morphological changes and cellular differentiation consistent with neuronal stem cell (NSC) development...
March 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28261833/diagnostic-utility-of-testosterone-priming-prior-to-dynamic-tests-to-differentiate-constitutional-delay-in-puberty-from-isolated-hypogonadotropic-hypogonadism
#5
Suja P Sukumar, Anil Bhansali, Naresh Sachdeva, Chirag Kamal Ahuja, Ujjwal Gorsi, Kush Dev Singh Jarial, Rama Walia
CONTEXT: Differentiation between constitutional delay in puberty (CDP) and isolated hypogonadotropic hypogonadism (IHH) during adolescence is a great clinical challenge and the available diagnostic tests are of limited value. OBJECTIVE: To study the effect of withdrawal of short term, low dose testosterone therapy (testosterone priming) on the discriminatory power of dynamic tests for hypothalamo-pituitary-testicular axis to differentiate CDP from IHH. DESIGN: A prospective study (n=30) consisting of 20 boys with delayed puberty (Group A) and 10 patients with IHH (Group B)...
March 5, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28235547/intermittent-hypercapnic-hypoxia-effects-on-the-nicotinic-acetylcholine-receptors-in-the-developing-piglet-hippocampus-and-brainstem
#6
Arunnjah Vivekanandarajah, Atqiya Aishah, Karen A Waters, Rita Machaalani
This study investigated the effects of acute (1 day) vs repeated (4 days) exposure to intermittent hypercapnic hypoxia (IHH) on the immunohistochemical expression of α2, α3, α5, α7, α9 and β2 nicotinic acetylcholine receptor (nAChR) subunits in the developing piglet hippocampus and brainstem medulla, and how prior nicotine exposure alters the response to acute IHH. Five piglet groups included: 1day IHH (1D IHH, n=9), 4days IHH (4D IHH, n=8), controls exposed only to air cycles for 1day (1D Air, n=6) or 4days (4D Air, n=5), and pre-exposed to nicotine for 13days prior to 1day IHH (Nic+1D IHH, n=7)...
February 22, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28205343/association-of-chloride-intracellular-channel-4-and-indian-hedgehog-proteins-with-survival-of-patients-with-pancreatic-ductal-adenocarcinoma
#7
Qiong Zou, Zhulin Yang, Daiqiang Li, Ziru Liu, Yuan Yuan
Pancreatic cancer is the fourth most common cause of cancer-related mortality. Novel molecular biomarkers need to be identified for personalized medicine and to improve survival. The aim of this study was to examine chloride intracellular channel 4 (CLIC4) and Indian Hedgehog (Ihh) expression in benign and malignant lesions of the pancreas and to examine the eventual association between CLIC4 and Ihh expression, with clinicopathological features and prognosis of pancreatic cancer. A retrospective study of specimens collected from January 2000 to December 2011 at the Department of Pathology of the Second and Third Xiangya Hospitals, Central South University was undertaken to explore this question...
February 16, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28183999/gain-of-function-%C3%AE-catenin-in-uterine-mesenchyme-leads-to-impaired-implantation-and-decidualization
#8
Amanda Lynn Patterson, Jamieson Pirochta, Stephanie Tufano, Jose Teixeira
Embryo implantation and endometrial decidualization are critical events that occur during early pregnancy in humans and mice, and perturbation in either can result in infertility. WNT signaling through the canonical β-catenin pathway plays a pivotal role in embryonic Müllerian duct development, postnatal uterine maturation, and establishment of pregnancy. Loss of β-catenin in the Müllerian duct mesenchyme (MDM)-derived stroma and myometrium results in impaired decidualization and infertility; whereas gain of function (GOF) results in formation of mesenchymal tumors and sub-fertility attributed to malformed oviducts...
February 9, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28177702/modulation-of-mitochondrial-biomarkers-by-intermittent-hypobaric-hypoxia-and-aerobic-exercise-after-eccentric-exercise-in-trained-rats
#9
David Rizo-Roca, Juan Gabriel Ríos-Kristjánsson, Cristian Núñez-Espinosa, Estela Santos-Alves, José Magalhães, António Ascensão, Teresa Pagès, Ginés Viscor, Joan Ramon Torrella
Unaccustomed eccentric contractions induce muscle damage, calcium homeostasis disruption and mitochondrial alterations. Since exercise and hypoxia are known to modulate mitochondrial function, we aimed to analyze the effects on eccentric exercise-induced muscle damage (EEIMD), in trained rats, of two recovery protocols based on: 1) intermittent hypobaric hypoxia (IHH) and 2) IHH followed by exercise. The expression of biomarkers related to mitochondrial biogenesis, dynamics, oxidative stress and bioenergetics was evaluated...
February 2, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28163186/microrna-467g-inhibits-new-bone-regeneration-by-targeting-ihh-runx-2-signaling
#10
Jyoti Kureel, Aijaz A John, Manisha Dixit, Divya Singh
MicroRNAs are important post transcriptional regulators of gene expression and play critical role in osteoblast differentiation. In this study we report miR-467g, an uncharacterized novel miRNA, in regulation of osteoblast functions. Over-expression of miR-467g inhibited osteoblast differentiation. Target prediction analysis tools and experimental validation by luciferase 3' UTR reporter assay identified Runx-2 as a direct target of miR-467g. Over expression of miR-467g in osteoblasts down regulated Runx-2 and Ihh signaling components...
February 2, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28159470/hedgehog-pathway-plays-a-vital-role-in-hiv-induced-epithelial-mesenchymal-transition-of-podocyte
#11
Xiqian Lan, Hongxiu Wen, Kang Cheng, Andrei Plagov, Seyedeh Shadafarin Marashi Shoshtari, Ashwani Malhotra, Pravin C Singhal
HIV-associated nephropathy (HIVAN) is characterized by heavy proteinuria, rapidly progressive renal failure, and distinct morphological features in the kidney. HIV-induced epithelial-mesenchymal transition (EMT) is critically important for the progression of kidney injury. In this study, we tested the role of hedgehog pathway in the HIV-induced EMT and fibrosis of kidney. We used the Tg26 mice, the abundantly used HIVAN mouse model, to investigate the activation of hedgehog pathway by HIV. Western blotting and real time PCR results showed that renal tissue expression of hedgehog pathway related molecules, including hedgehog homologous (Shh, Ihh, Dhh), PTCH, and Gli1, were increased in HIVAN (Tg26) mice; while immunofluorescent staining displayed localization PTCH expression in podocytes...
March 15, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28146470/rare-and-low-frequency-coding-variants-alter-human-adult-height
#12
Eirini Marouli, Mariaelisa Graff, Carolina Medina-Gomez, Ken Sin Lo, Andrew R Wood, Troels R Kjaer, Rebecca S Fine, Yingchang Lu, Claudia Schurmann, Heather M Highland, Sina Rüeger, Gudmar Thorleifsson, Anne E Justice, David Lamparter, Kathleen E Stirrups, Valérie Turcot, Kristin L Young, Thomas W Winkler, Tõnu Esko, Tugce Karaderi, Adam E Locke, Nicholas G D Masca, Maggie C Y Ng, Poorva Mudgal, Manuel A Rivas, Sailaja Vedantam, Anubha Mahajan, Xiuqing Guo, Goncalo Abecasis, Katja K Aben, Linda S Adair, Dewan S Alam, Eva Albrecht, Kristine H Allin, Matthew Allison, Philippe Amouyel, Emil V Appel, Dominique Arveiler, Folkert W Asselbergs, Paul L Auer, Beverley Balkau, Bernhard Banas, Lia E Bang, Marianne Benn, Sven Bergmann, Lawrence F Bielak, Matthias Blüher, Heiner Boeing, Eric Boerwinkle, Carsten A Böger, Lori L Bonnycastle, Jette Bork-Jensen, Michiel L Bots, Erwin P Bottinger, Donald W Bowden, Ivan Brandslund, Gerome Breen, Murray H Brilliant, Linda Broer, Amber A Burt, Adam S Butterworth, David J Carey, Mark J Caulfield, John C Chambers, Daniel I Chasman, Yii-Der Ida Chen, Rajiv Chowdhury, Cramer Christensen, Audrey Y Chu, Massimiliano Cocca, Francis S Collins, James P Cook, Janie Corley, Jordi Corominas Galbany, Amanda J Cox, Gabriel Cuellar-Partida, John Danesh, Gail Davies, Paul I W de Bakker, Gert J de Borst, Simon de Denus, Mark C H de Groot, Renée de Mutsert, Ian J Deary, George Dedoussis, Ellen W Demerath, Anneke I den Hollander, Joe G Dennis, Emanuele Di Angelantonio, Fotios Drenos, Mengmeng Du, Alison M Dunning, Douglas F Easton, Tapani Ebeling, Todd L Edwards, Patrick T Ellinor, Paul Elliott, Evangelos Evangelou, Aliki-Eleni Farmaki, Jessica D Faul, Mary F Feitosa, Shuang Feng, Ele Ferrannini, Marco M Ferrario, Jean Ferrieres, Jose C Florez, Ian Ford, Myriam Fornage, Paul W Franks, Ruth Frikke-Schmidt, Tessel E Galesloot, Wei Gan, Ilaria Gandin, Paolo Gasparini, Vilmantas Giedraitis, Ayush Giri, Giorgia Girotto, Scott D Gordon, Penny Gordon-Larsen, Mathias Gorski, Niels Grarup, Megan L Grove, Vilmundur Gudnason, Stefan Gustafsson, Torben Hansen, Kathleen Mullan Harris, Tamara B Harris, Andrew T Hattersley, Caroline Hayward, Liang He, Iris M Heid, Kauko Heikkilä, Øyvind Helgeland, Jussi Hernesniemi, Alex W Hewitt, Lynne J Hocking, Mette Hollensted, Oddgeir L Holmen, G Kees Hovingh, Joanna M M Howson, Carel B Hoyng, Paul L Huang, Kristian Hveem, M Arfan Ikram, Erik Ingelsson, Anne U Jackson, Jan-Håkan Jansson, Gail P Jarvik, Gorm B Jensen, Min A Jhun, Yucheng Jia, Xuejuan Jiang, Stefan Johansson, Marit E Jørgensen, Torben Jørgensen, Pekka Jousilahti, J Wouter Jukema, Bratati Kahali, René S Kahn, Mika Kähönen, Pia R Kamstrup, Stavroula Kanoni, Jaakko Kaprio, Maria Karaleftheri, Sharon L R Kardia, Fredrik Karpe, Frank Kee, Renske Keeman, Lambertus A Kiemeney, Hidetoshi Kitajima, Kirsten B Kluivers, Thomas Kocher, Pirjo Komulainen, Jukka Kontto, Jaspal S Kooner, Charles Kooperberg, Peter Kovacs, Jennifer Kriebel, Helena Kuivaniemi, Sébastien Küry, Johanna Kuusisto, Martina La Bianca, Markku Laakso, Timo A Lakka, Ethan M Lange, Leslie A Lange, Carl D Langefeld, Claudia Langenberg, Eric B Larson, I-Te Lee, Terho Lehtimäki, Cora E Lewis, Huaixing Li, Jin Li, Ruifang Li-Gao, Honghuang Lin, Li-An Lin, Xu Lin, Lars Lind, Jaana Lindström, Allan Linneberg, Yeheng Liu, Yongmei Liu, Artitaya Lophatananon, Jian'an Luan, Steven A Lubitz, Leo-Pekka Lyytikäinen, David A Mackey, Pamela A F Madden, Alisa K Manning, Satu Männistö, Gaëlle Marenne, Jonathan Marten, Nicholas G Martin, Angela L Mazul, Karina Meidtner, Andres Metspalu, Paul Mitchell, Karen L Mohlke, Dennis O Mook-Kanamori, Anna Morgan, Andrew D Morris, Andrew P Morris, Martina Müller-Nurasyid, Patricia B Munroe, Mike A Nalls, Matthias Nauck, Christopher P Nelson, Matt Neville, Sune F Nielsen, Kjell Nikus, Pål R Njølstad, Børge G Nordestgaard, Ioanna Ntalla, Jeffrey R O'Connel, Heikki Oksa, Loes M Olde Loohuis, Roel A Ophoff, Katharine R Owen, Chris J Packard, Sandosh Padmanabhan, Colin N A Palmer, Gerard Pasterkamp, Aniruddh P Patel, Alison Pattie, Oluf Pedersen, Peggy L Peissig, Gina M Peloso, Craig E Pennell, Markus Perola, James A Perry, John R B Perry, Thomas N Person, Ailith Pirie, Ozren Polasek, Danielle Posthuma, Olli T Raitakari, Asif Rasheed, Rainer Rauramaa, Dermot F Reilly, Alex P Reiner, Frida Renström, Paul M Ridker, John D Rioux, Neil Robertson, Antonietta Robino, Olov Rolandsson, Igor Rudan, Katherine S Ruth, Danish Saleheen, Veikko Salomaa, Nilesh J Samani, Kevin Sandow, Yadav Sapkota, Naveed Sattar, Marjanka K Schmidt, Pamela J Schreiner, Matthias B Schulze, Robert A Scott, Marcelo P Segura-Lepe, Svati Shah, Xueling Sim, Suthesh Sivapalaratnam, Kerrin S Small, Albert Vernon Smith, Jennifer A Smith, Lorraine Southam, Timothy D Spector, Elizabeth K Speliotes, John M Starr, Valgerdur Steinthorsdottir, Heather M Stringham, Michael Stumvoll, Praveen Surendran, Leen M 't Hart, Katherine E Tansey, Jean-Claude Tardif, Kent D Taylor, Alexander Teumer, Deborah J Thompson, Unnur Thorsteinsdottir, Betina H Thuesen, Anke Tönjes, Gerard Tromp, Stella Trompet, Emmanouil Tsafantakis, Jaakko Tuomilehto, Anne Tybjaerg-Hansen, Jonathan P Tyrer, Rudolf Uher, André G Uitterlinden, Sheila Ulivi, Sander W van der Laan, Andries R Van Der Leij, Cornelia M van Duijn, Natasja M van Schoor, Jessica van Setten, Anette Varbo, Tibor V Varga, Rohit Varma, Digna R Velez Edwards, Sita H Vermeulen, Henrik Vestergaard, Veronique Vitart, Thomas F Vogt, Diego Vozzi, Mark Walker, Feijie Wang, Carol A Wang, Shuai Wang, Yiqin Wang, Nicholas J Wareham, Helen R Warren, Jennifer Wessel, Sara M Willems, James G Wilson, Daniel R Witte, Michael O Woods, Ying Wu, Hanieh Yaghootkar, Jie Yao, Pang Yao, Laura M Yerges-Armstrong, Robin Young, Eleftheria Zeggini, Xiaowei Zhan, Weihua Zhang, Jing Hua Zhao, Wei Zhao, Wei Zhao, He Zheng, Wei Zhou, Jerome I Rotter, Michael Boehnke, Sekar Kathiresan, Mark I McCarthy, Cristen J Willer, Kari Stefansson, Ingrid B Borecki, Dajiang J Liu, Kari E North, Nancy L Heard-Costa, Tune H Pers, Cecilia M Lindgren, Claus Oxvig, Zoltán Kutalik, Fernando Rivadeneira, Ruth J F Loos, Timothy M Frayling, Joel N Hirschhorn, Panos Deloukas, Guillaume Lettre
Height is a highly heritable, classic polygenic trait with approximately 700 common associated variants identified through genome-wide association studies so far. Here, we report 83 height-associated coding variants with lower minor-allele frequencies (in the range of 0.1-4.8%) and effects of up to 2 centimetres per allele (such as those in IHH, STC2, AR and CRISPLD2), greater than ten times the average effect of common variants. In functional follow-up studies, rare height-increasing alleles of STC2 (giving an increase of 1-2 centimetres per allele) compromised proteolytic inhibition of PAPP-A and increased cleavage of IGFBP-4 in vitro, resulting in higher bioavailability of insulin-like growth factors...
February 9, 2017: Nature
https://www.readbyqxmd.com/read/28130434/selective-progesterone-receptor-modulator-sprm-ulipristal-acetate-upa-and-its-effects-on-the-human-endometrium
#13
L H R Whitaker, A A Murray, R Matthews, G Shaw, A R W Williams, P T K Saunders, H O D Critchley
STUDY QUESTION: What is the impact of administration of the selective progesterone receptor modulator (SPRM), ulipristal acetate (UPA) on the endometrium of women with fibroids? SUMMARY ANSWER: UPA administration altered expression of sex-steroid receptors and progesterone-regulated genes and was associated with low levels of glandular and stromal cell proliferation. WHAT IS KNOWN ALREADY: Administration of all SPRM class members results in PAEC (progesterone receptor modulator associated endometrial changes)...
January 26, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28125843/pituitary-adenylate-cyclase-activating-peptide-pacap-a-novel-secretagogue-regulates-secreted-morphogens-in-newborn-rat-retina
#14
Monika Lakk, Viktoria Denes, Karmen Kovacs, Orsolya Hideg, Bence F Szabo, Robert Gabriel
Purpose: Pituitary adenylate cyclase-activating peptide (PACAP)1-38 has been reported to be responsible for regulation of a disparate array of developmental processes in the central nervous system, and its antiapoptotic effect has been revealed in numerous models, pointing to its relevance in the etiology of neurodegenerative disorders. However, its function in retinal development remains unclear. Here, we aimed to point out that versatility can be achieved through interaction with other regulators, in which PACAP can act indirectly on the retinal microenvironment...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28118357/endochondral-ossification-is-accelerated-in-cholinesterase-deficient-mice-and-in-avian-mesenchymal-micromass-cultures
#15
Janine Spieker, Thomas Mudersbach, Astrid Vogel-Höpker, Paul G Layer
Most components of the cholinergic system are detected in skeletogenic cell types in vitro, yet the function of this system in skeletogenesis remains unclear. Here, we analyzed endochondral ossification in mutant murine fetuses, in which genes of the rate-limiting cholinergic enzymes acetyl- (AChE), or butyrylcholinesterase (BChE), or both were deleted (called here A-B+, A+B-, A-B-, respectively). In all mutant embryos bone growth and cartilage remodeling into mineralizing bone were accelerated, as revealed by Alcian blue (A-blu) and Alizarin red (A-red) staining...
2017: PloS One
https://www.readbyqxmd.com/read/28116542/the-hedgehog-signaling-pathway-is-repressed-during-the-osteogenic-differentiation-of-dental-follicle-cells
#16
C Morsczeck, A Reck, H C Beck
Dental follicle stem cells (DFCs) are precursor cells of alveolar osteoblasts, and previous studies have shown that the growth factor bone morphogenetic protein (BMP)2 induces the osteogenic differentiation of DFCs. However, the molecular mechanism down-stream of the induction of the osteogenic differentiation by BMP2 remains elusive. We investigated therefore the phosphoproteome of DFCs after the induction of the osteogenic differentiation with BMP2. In this study, phosphoproteins of the hedgehog "off" state were differentially expressed...
January 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28077677/pharmacological-rescue-of-diabetic-skeletal-stem-cell-niches
#17
Ruth Tevlin, Eun Young Seo, Owen Marecic, Adrian McArdle, Xinming Tong, Bryan Zimdahl, Andrey Malkovskiy, Rahul Sinha, Gunsagar Gulati, Xiyan Li, Taylor Wearda, Rachel Morganti, Michael Lopez, Ryan C Ransom, Christopher R Duldulao, Melanie Rodrigues, Allison Nguyen, Michael Januszyk, Zeshaan Maan, Kevin Paik, Kshemendra-Senarath Yapa, Jayakumar Rajadas, Derrick C Wan, Geoffrey C Gurtner, Michael Snyder, Philip A Beachy, Fan Yang, Stuart B Goodman, Irving L Weissman, Charles K F Chan, Michael T Longaker
Diabetes mellitus (DM) is a metabolic disease frequently associated with impaired bone healing. Despite its increasing prevalence worldwide, the molecular etiology of DM-linked skeletal complications remains poorly defined. Using advanced stem cell characterization techniques, we analyzed intrinsic and extrinsic determinants of mouse skeletal stem cell (mSSC) function to identify specific mSSC niche-related abnormalities that could impair skeletal repair in diabetic (Db) mice. We discovered that high serum concentrations of tumor necrosis factor-α directly repressed the expression of Indian hedgehog (Ihh) in mSSCs and in their downstream skeletogenic progenitors in Db mice...
January 11, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28077400/differential-expression-of-hedgehog-and-snail-in-cutaneous-fibrosing-disorders-implications-for-targeted-inhibition
#18
Amrita Goyal, Katy R Linskey, Jonathan Kay, Lyn M Duncan, Rosalynn M Nazarian
OBJECTIVES: To examine Hedgehog signaling in cutaneous fibrosing disorders for which effective approved therapies are lacking, expand our knowledge of pathophysiology, and explore the rationale for targeted inhibition. METHODS: Stain intensity and percentage of cells staining for Sonic hedgehog (Shh), Indian hedgehog (Ihh), Patched (Ptch), glycogen synthase kinase 3 β (GSK3-β), β-catenin, and Snail were evaluated in human skin biopsy specimens of keloid, hypertrophic scar (Hscar), scleroderma, nephrogenic systemic fibrosis (NSF), scar, and normal skin using a tissue microarray...
December 2016: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28068223/hepatocyte-taz-wwtr1-promotes-inflammation-and-fibrosis-in-nonalcoholic-steatohepatitis
#19
Xiaobo Wang, Ze Zheng, Jorge Matias Caviglia, Kathleen E Corey, Tina M Herfel, Bishuang Cai, Ricard Masia, Raymond T Chung, Jay H Lefkowitch, Robert F Schwabe, Ira Tabas
Nonalcoholic steatohepatitis (NASH) is a leading cause of liver disease worldwide. However, the molecular basis of how benign steatosis progresses to NASH is incompletely understood, which has limited the identification of therapeutic targets. Here we show that the transcription regulator TAZ (WWTR1) is markedly higher in hepatocytes in human and murine NASH liver than in normal or steatotic liver. Most importantly, silencing of hepatocyte TAZ in murine models of NASH prevented or reversed hepatic inflammation, hepatocyte death, and fibrosis, but not steatosis...
December 13, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/28064102/influence-of-components-of-tumour-microenvironment-on-the-response-of-hct-116-colorectal-cancer-to-the-ruthenium-based-drug-nami-a
#20
Alberta Bergamo, Chiara Pelillo, Angela Chambery, Gianni Sava
Solid tumours are constituted of tumour cells, healthy cells recruited from the host tissues and soluble factors released by both these cell types. The present investigation examines the capacity of co-cultures between the HCEC colon epithelial cells and the HCT-116 colorectal cancer cells (mimicking the primary site of tumour growth) and between IHH hepatocytes and the HCT-116 colorectal cancer cells (metastatic site) to influence the effects of NAMI-A (imidazolium trans-imidazoledimethylsulphoxidetetrachloro ruthenate) on the tumour cells themselves...
December 2, 2016: Journal of Inorganic Biochemistry
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