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Olivier Duverger, Takahiro Ohara, Paul W Bible, Angela Zah, Maria I Morasso
Patients with Tricho-Dento-Osseous syndrome, an ectodermal dysplasia caused by mutations in the homeodomain transcription factor DLX3, exhibit enamel hypoplasia and hypomineralization. Here we used a conditional knockout mouse model to investigate the developmental and molecular consequences of Dlx3 deletion in the dental epithelium in vivo. Dlx3 deletion in the dental epithelium resulted in the formation of chalky hypomineralized enamel in all teeth. Interestingly, transcriptomic analysis revealed that major enamel matrix proteins and proteases known to be involved in enamel secretion and maturation were not affected significantly by Dlx3 deletion in the enamel organ...
October 19, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Worawan Kunotai, Panjit Ananpornruedee, Mark Lubinsky, Apitchaya Pruksametanan, Piranit Nik Kantaputra
A Thai mother and her two daughters were affected with tricho-rhino-phalangeal syndrome type I. The daughters had 15 and 18 supernumerary teeth, respectively. The mother had normal dentition. Mutation analysis of TRPS1 showed a novel heterozygous c.3809_3811delACTinsCATGTTGTG mutation in all. This mutation is predicted to cause amino acid changes in the Ikaros-like zinc finger domain near the C-terminal end of TRPS1, which is important for repressive protein function. The results of our study and the comprehensive review of the literature show that pathways of forming supernumerary teeth appear to involve APC and RUNX2, the genes responsible for familial adenomatous polyposis syndrome and cleidocranial dysplasia, respectively...
October 5, 2016: American Journal of Medical Genetics. Part A
Masatsune Itoh, Yuko Kittaka, Yo Niida, Yutaka Saikawa
No abstract text is available yet for this article.
July 2016: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
Guilherme Monteiro de Barros, Adriana Maria Kakehasi
The tricho-rhino-phalangeal syndrome (TRPS) type I is a rare genetic disorder related to the TRPS1 gene mutation in chromosome 8, characterized by craniofacial abnormalities and disturbances in formation and maturation of bone matrix. The hallmarks are sparse and brittle hair, tendency to premature baldness, bulbous nose called pear-shaped, long and flat filter and low ear implantation. The most noticeable skeletal changes are clinodactyly, phalangeal epiphyses of the hands appearing as cone-shaped, short stature and hip joint malformations...
January 2016: Revista Brasileira de Reumatologia
Ahmed G Nomir, Yuto Takeuchi, Junji Fujikawa, Ashraf A El Sharaby, Satoshi Wakisaka, Makoto Abe
Tricho-rhino-phalangeal syndrome (TRPS) is a rare congenital disorder that is characterized by abnormal hair growth and skeletal deformities. These result in sparse hair, short stature, and early onset of joint problems. Recent reports have shown that a relatively high proportion of patients with TRPS exhibit a broad range of congenital heart defects. To determine the regulation of Trps1 transcription in vivo, we generated novel transgenic mice, which expressed Cre recombinase under the murine Trps1 proximal promoter sequence (Trps1-Cre)...
July 2016: Genesis: the Journal of Genetics and Development
Veronica Busoni, Julie Lemale, Beatrice Dubern, Fernando Frangi, Patrice Bourgeois, Marina Orsi, Catherine Badens, Alexandre Fabre
BACKGROUND: Very early onset inflammatory bowel disease (VEOIBD) (IBD before 6 years of age) may manifest as a monogenic disease affecting the gastrointestinal tract. Syndromic diarrhea/tricho-hepato-enteric syndrome (SD/THE), a rare disorder caused by alteration of a complex involved in RNA degradation, has been reported to present with some degree of colitis and in some cases an IBD-like presentation. METHODS: We reviewed clinical and biological data of four previously published cases and add detailed data of two new cases of SD/THE with an IBD-like presentation...
March 28, 2016: Journal of Pediatric Gastroenterology and Nutrition
Jin-Zhou Huang, Min Chen, Ming Zeng, Song-Hui Xu, Fei-Yan Zou, De Chen, Guang-Rong Yan
The tricho-rhino-phalangeal syndrome 1 gene (TRPS1), which was initially found to be associated with tricho-rhino-phalangeal syndrome, is critical for the development and differentiation of bone, hair follicles and kidney. However, its role in cancer progression is largely unknown. In this study, we demonstrated that down-regulation of TRPS1 correlated with distant metastasis, tumour recurrence and poor survival rate in cancer patients. TRPS1 was frequently down-regulated in high-metastatic cancer cell lines from the breast, colon and nasopharynx...
June 2016: Journal of Pathology
Wen-I Lee, Jing-Long Huang, Chien-Chang Chen, Ju-Li Lin, Ren-Chin Wu, Tang-Her Jaing, Liang-Shiou Ou
Syndromic diarrhea/tricho-hepato-enteric syndrome (SD/THE) is a rare, autosomal recessive and severe bowel disorder mainly caused by mutations in the tetratricopeptide repeat domain 37 (TTC37) gene which act as heterotetrameric cofactors to enhance aberrant mRNAs decay. The phenotype and immune profiles of SD/THE overlap those of primary immunodeficiency diseases (PIDs). Neonates with intractable diarrhea underwent immunologic assessments including immunoglobulin levels, lymphocyte subsets, lymphocyte proliferation, superoxide production, and IL-10 signaling function...
March 2016: Medicine (Baltimore)
Scott Evans, Paul Brewer, Sumathi Vaiyapuri, Robert Grimer
Trichorhinophalangeal syndrome (TRPS) is a rare genetic disorder with typical craniofacial and skeletal abnormalities. Three main subtypes have been described. All variations of the condition affect the hair (tricho), nose (rhino) and fingers (phalangeal). The diagnosis is usually made through clinical examination augmented by hand radiographs that reveal characteristic cone-shaped epiphyses Sporadic case reports detailing TRPS have been described in the literature. We describe the first report of high-grade osteosarcoma presenting in two members of the same family with trichorhinophalangeal syndrome (TRPS)...
June 2013: Journal of Bone Oncology
Na Zhao, Dong Han, Yang Liu, Yue Li, Li Zeng, Yixiang Wang, Hailan Feng
Homeodomain gene Distal-less-3 (DLX3) plays an essential role in the development of bones. Mutations of DLX3 are closely associated with Tricho-Dento-Osseous (TDO) syndrome featured with increased bone formation. However, the mechanism regarding whether DLX3 regulates osteoclastogenesis remains largely unknown. In this study, we firstly examined the expression of DLX3 mounting during osteoclastic differentiation process, and then established stably expressing wild type DLX3 (WT-DLX3), a novel mutant DLX3 (Q178R) found in our laboratory recently (MT-DLX3) and Dlx3 knockdown cell lines (Dlx3-shRNA) in Raw 264...
February 15, 2016: Experimental Cell Research
Anne-Sophie Bach, Danielle Derocq, Valérie Laurent-Matha, Philippe Montcourrier, Salwa Sebti, Béatrice Orsetti, Charles Theillet, Céline Gongora, Sophie Pattingre, Eva Ibing, Pascal Roger, Laetitia K Linares, Thomas Reinheckel, Guillaume Meurice, Frank J Kaiser, Christian Gespach, Emmanuelle Liaudet-Coopman
The lysosomal protease cathepsin D (Cath-D) is overproduced in breast cancer cells (BCC) and supports tumor growth and metastasis formation. Here, we describe the mechanism whereby Cath-D is accumulated in the nucleus of ERα-positive (ER+) BCC. We identified TRPS1 (tricho-rhino-phalangeal-syndrome 1), a repressor of GATA-mediated transcription, and BAT3 (Scythe/BAG6), a nucleo-cytoplasmic shuttling chaperone protein, as new Cath-D-interacting nuclear proteins. Cath-D binds to BAT3 in ER+ BCC and they partially co-localize at the surface of lysosomes and in the nucleus...
September 29, 2015: Oncotarget
Takako Miyamae, Gen Nishimura, Takayuki Kishi, Yutaka Shimomura, Hisashi Yamanaka
No abstract text is available yet for this article.
June 2015: Pediatrics International: Official Journal of the Japan Pediatric Society
Yue Li, Dong Han, Hao Zhang, Haochen Liu, Singwai Wong, Na Zhao, Lixin Qiu, Hailan Feng
Tricho-dento-osseous (TDO) syndrome, an autosomal-dominant disorder, affects the morphological appearance of the tooth enamel, hair, and bone. Previous studies have confirmed that mutations in the DLX3 gene are responsible for TDO. In this study, we describe a Chinese patient with the typical traits of TDO - kinky hair, enamel hypoplasia, skull and jaw bones thickening, and sclerosis. Unfortunately, as a result of excessive attrition, we were unable to assess taurodontism. Examination of the tooth ground section showed a thin layer of enamel with no rods on the patient's tooth and abnormalities in Tomes' granular layer and the dentinal tubules...
August 2015: European Journal of Oral Sciences
Christian Löfke, David Scheuring, Kai Dünser, Maria Schöller, Christian Luschnig, Jürgen Kleine-Vehn
The phytohormone auxin is a vital growth regulator in plants. In the root epidermis auxin steers root organ growth. However, the mechanisms that allow adjacent tissues to integrate growth are largely unknown. Here, the focus is on neighbouring epidermal root tissues to assess the integration of auxin-related growth responses. The pharmacologic, genetic, and live-cell imaging approaches reveal that PIN2 auxin efflux carriers are differentially controlled in tricho- and atrichoblast cells. PIN2 proteins show lower abundance at the plasma membrane of trichoblast cells, despite showing higher rates of intracellular trafficking in these cells...
August 2015: Journal of Experimental Botany
Katarzyna Czerwińska, Monika Bekiesińska-Figatowska, Michał Brzewski, Michał Gogolewski, Marek Wolski
BACKGROUND: Trichobezoar is an uncommon entity observed mostly in young women. Symptoms in presenting patients are usually due to the large mass of the bezoar or malabsorption of nutrients. Trichobezoar is almost always associated with trichotillomania and trichophagia. CASE REPORT: Three teenage girls, aged 13, 15, and 16, were diagnosed due to palpable epigastric masses. Additionally the oldest patient presented with symptoms of ileus while the other two patients had weight loss and anaemia...
2015: Polish Journal of Radiology
Jin Ho Chong, Saumya Shekhar Jamuar, Christina Ong, Koh Cheng Thoon, Ee Shien Tan, Angeline Lai, Mark Koh Jean Aan, Wilson Lek Wen Tan, Roger Foo, Ene Choo Tan, Yu-Lung Lau, Woei Kang Liew
UNLABELLED: Tricho-hepato-enteric syndrome (THE-S) is characterized by severe infantile diarrhea, failure to thrive, dysmorphism, woolly hair, and immune or hepatic dysfunction. We report two cases of East Asian descent with THE-S who had remained undiagnosed despite extensive investigations but were diagnosed on whole exome sequencing (WES). Both cases presented with chronic diarrhea, failure to thrive, and recurrent infections. Case 1 had posteriorly rotated low set ears, mild retrognathia, and fine curly hypopigmented hair...
October 2015: European Journal of Pediatrics
Zhichun Zhang, Hua Tian, Ping Lv, Weiping Wang, Zhuqing Jia, Sainan Wang, Chunyan Zhou, Xuejun Gao
Mutation of distal-less homeobox 3 (DLX3) is responsible for human tricho-dento-osseous syndrome (TDO) with amelogenesis imperfecta, indicating a crucial role of DLX3 in amelogenesis. However, the expression pattern of DLX3 and its specific function in amelogenesis remain largely unknown. The aim of this study was to investigate the effects of DLX3 on enamel matrix protein (EMP) genes. By immunohistochemistry assays of mouse tooth germs, stronger immunostaining of DLX3 protein was identified in ameloblasts in the secretory stage than in the pre-secretory and maturation stages, and the same pattern was found for Dlx3 mRNA using Realtime PCR...
2015: PloS One
Saskia M Maas, Adam C Shaw, Hennie Bikker, Hermann-Josef Lüdecke, Karin van der Tuin, Magdalena Badura-Stronka, Elga Belligni, Elisa Biamino, Maria Teresa Bonati, Daniel R Carvalho, JanMaarten Cobben, Stella A de Man, Nicolette S Den Hollander, Nataliya Di Donato, Livia Garavelli, Sabine Grønborg, Johanna C Herkert, A Jeannette M Hoogeboom, Aleksander Jamsheer, Anna Latos-Bielenska, Anneke Maat-Kievit, Cinzia Magnani, Carlo Marcelis, Inge B Mathijssen, Maartje Nielsen, Ellen Otten, Lilian B Ousager, Jacek Pilch, Astrid Plomp, Gemma Poke, Anna Poluha, Renata Posmyk, Claudine Rieubland, Margharita Silengo, Marleen Simon, Elisabeth Steichen, Connie Stumpel, Katalin Szakszon, Edit Polonkai, Jenneke van den Ende, Antony van der Steen, Ton van Essen, Arie van Haeringen, Johanna M van Hagen, Joke B G M Verheij, Marcel M Mannens, Raoul C Hennekam
Tricho-rhino-phalangeal syndrome (TRPS) is characterized by craniofacial and skeletal abnormalities, and subdivided in TRPS I, caused by mutations in TRPS1, and TRPS II, caused by a contiguous gene deletion affecting (amongst others) TRPS1 and EXT1. We performed a collaborative international study to delineate phenotype, natural history, variability, and genotype-phenotype correlations in more detail. We gathered information on 103 cytogenetically or molecularly confirmed affected individuals. TRPS I was present in 85 individuals (22 missense mutations, 62 other mutations), TRPS II in 14, and in 5 it remained uncertain whether TRPS1 was partially or completely deleted...
May 2015: European Journal of Medical Genetics
Dorota M Monies, Zuhair Rahbeeni, Mohamed Abouelhoda, Ewa A Naim, Banan Al-Younes, Brian F Meyer, Ali Al-Mehaidib
Molecular genetics studies are of increasing importance in the diagnosis and classification of congenital diarrheal disorders. We describe the molecular genetic basis of tricho-hepato-enteric syndrome in patients from Saudi Arabia with novel mutations of SKIV2L (c.3559_3579del, p.1187_1193del) and TTC37 (C4102T, p.Q1368X). Interestingly, the congenital presence of café-au-lait spots and their distribution in the pelvis and lower limbs were a unique and consistent clinical feature of these patients and may aid differential diagnosis of congenital diarrheal disorders...
March 2015: Journal of Pediatric Gastroenterology and Nutrition
Guilherme Monteiro de Barros, Adriana Maria Kakehasi
The Tricho-rhino-phalangeal syndrome (TRPS) type I is a rare genetic disorder related to the TRPS1 gene mutation in chromosome 8, characterized by craniofacial abnormalities and disturbances in formation and maturation of bone matrix. The hallmarks are sparse and brittle hair, tendency to premature baldness, bulbous nose called pear-shaped, long and flat filter and low ear implantation. The most noticeable skeletal changes are clinodactyly, phalangeal epiphyses of the hands appearing as cone-shaped, short stature and hip joint malformations...
November 20, 2014: Revista Brasileira de Reumatologia
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