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https://www.readbyqxmd.com/read/27919666/calreticulin-is-a-secreted-bmp-antagonist-expressed-in-hensen-s-node-during-neural-induction
#1
Irene De Almeida, Nidia M M Oliveira, Rebecca A Randall, Caroline S Hill, John M McCoy, Claudio D Stern
Hensen's node is the "organizer" of the avian and mammalian early embryo. It has many functions, including neural induction and patterning of the ectoderm and mesoderm. Some of the signals responsible for these activities are known but these do not explain the full complexity of organizer activity. Here we undertake a functional screen to discover new secreted factors expressed by the node at this time of development. Using a Signal Sequence Trap in yeast, we identify several candidates. Here we focus on Calreticulin...
December 2, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27918583/the-gene-regulatory-network-of-lens-induction-is-wired-through-meis-dependent-shadow-enhancers-of-pax6
#2
Barbora Antosova, Jana Smolikova, Lucie Klimova, Jitka Lachova, Michaela Bendova, Iryna Kozmikova, Ondrej Machon, Zbynek Kozmik
Lens induction is a classical developmental model allowing investigation of cell specification, spatiotemporal control of gene expression, as well as how transcription factors are integrated into highly complex gene regulatory networks (GRNs). Pax6 represents a key node in the gene regulatory network governing mammalian lens induction. Meis1 and Meis2 homeoproteins are considered as essential upstream regulators of Pax6 during lens morphogenesis based on their interaction with the ectoderm enhancer (EE) located upstream of Pax6 transcription start site...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27916941/autoimmune-regulator-expression-in-dc2-4-cells-regulates-the-nf-%C3%AE%C2%BAb-signaling-and-cytokine-expression-of-the-toll-like-receptor-3-pathway
#3
Jitong Sun, Kunwei Niu, Haiying Fu, Haijun Li, Yi Li, Wei Yang
Autoimmune regulator (Aire) mutations result in autoimmune polyendocrinopathy candidiasis ectodermal dystrophy (APECED), which manifests as multi-organ autoimmunity and chronic mucocutaneous candidiasis (CMC). Indendritic cells (DCs), pattern recognition receptors (PRR), such as Toll-like receptors (TLRs), are closely involved in the recognition of various pathogens, activating the intercellular signaling pathway, followed by the activation of transcription factors and the expression of downstream genes, which take part in mediating the immune response and maintaining immune tolerance...
December 1, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27904288/acquired-dermal-melanocytosis-occurring-in-a-patient-with-hypohidrotic-ectodermal-dysplasia
#4
Dong Ju Hyun, Dong Hyun Kim, Moon Soo Yoon, Hee Jung Lee
No abstract text is available yet for this article.
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27904020/is-the-ultimobranchial-body-a-reality-or-myth-a-study-using-serial-sections-of-human-embryos
#5
Yohei Honkura, Masahito Yamamoto, Toshihito Yoshimoto, Jose Francisco Rodriguez-Vazquez, Gen Murakami, Yukio Katori, Shin-Ichi Abe
Reported morphologies of the ultimobranchial body had varied between researchers: a cluster of mitotic cells, a duct-like structure and a rosette-like cell mass. To clarify the true morphology, we studied tilted horizontal sections of 20 human embryos (crown-rump length 5-18 mm; 4-6 weeks). The sections displayed a ladder-like arrangement of the second to fourth endodermal pouches and, in 5 early embryos we found the fifth pouch attached to the fifth ectodermal groove near the fourth pharyngeal arch artery...
2016: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/27903118/frontal-dermoid-cyst-coexisting-with-suprasellar-craniopharyngioma-a-spectrum-of-ectodermally-derived-epithelial-lined-cystic-lesions
#6
Hussam Abou-Al-Shaar, Muhammad M Abd-El-Barr, Hasan A Zaidi, Eleanor Russell-Goldman, Rebecca D Folkerth, Edward R Laws, E Antonio Chiocca
There is a wide group of lesions that may exist in the sellar and suprasellar regions. Embryologically, there is varying evidence that many of these entities may in fact represent a continuum of pathology deriving from a common ectodermal origin. The authors report a case of a concomitant suprasellar craniopharyngioma invading the third ventricle with a concurrent frontal lobe cystic dermoid tumor. A 21-year-old man presented to the authors' service with a 3-day history of worsening headache, nausea, vomiting, and blurry vision...
December 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27898350/cronkhite-canada-syndrome-complicated-by-pulmonary-embolism-a-case-report
#7
Neha L Nemade, Urvi B Shukla, Gajanan D Wagholikar
INTRODUCTION: Cronkhite Canada Syndrome (CCS) is a rare syndrome, described in 1955 by Americans, Leonard Wolsey Cronkhite and Wilma Jeanne Canada in the New England Journal of Medicine [1]. About 450 cases have been reported. Complications, like malignant transformation, unprovoked thromboembolism is known. Since there is wide variability in medical presentation, no definitive diagnostic and treatment protocol s have been set. The mortality remains at 55%. CASE PRESENTATION: We report a case of a 50 year old male patient presenting with diarrhea, weight loss, abdominal pain, ectodermal features...
November 17, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27888190/tfap2-and-sox1-2-3-cooperatively-specify-ectodermal-fates-in-ascidian-embryos
#8
Kaoru S Imai, Hiroki Hikawa, Kenji Kobayashi, Yutaka Satou
Epidermis and neural tissues differentiate from the ectoderm in animal embryos. While epidermal fate is thought to be induced in vertebrate embryos, embryological evidence has indicated that no intercellular interactions during early stages are required for epidermal fate in ascidian embryos. To test this hypothesis, we determined the gene regulatory circuits for epidermal and neural specification in the ascidian embryo. These circuits started with Tfap2-r.b and Sox1/2/3, which are expressed in the ectodermal lineage immediately after zygotic genome activation...
November 25, 2016: Development
https://www.readbyqxmd.com/read/27881089/abnormal-primary-and-permanent-dentitions-with-ectodermal-symptoms-predict-wnt10a-deficiency
#9
Birgitta Bergendal, Johanna Norderyd, Xiaolei Zhou, Joakim Klar, Niklas Dahl
BACKGROUND: The WNT10A protein is critical for the development of ectodermal appendages. Variants in the WNT10A gene may be associated with a spectrum of ectodermal abnormalities including extensive tooth agenesis. METHODS: In seven patients with severe tooth agenesis we identified anomalies in primary dentition and additional ectodermal symptoms, and assessed WNT10A mutations by genetic analysis. RESULTS: Investigation of primary dentition revealed peg-shaped crowns of primary mandibular incisors and three individuals had agenesis of at least two primary teeth...
November 24, 2016: BMC Medical Genetics
https://www.readbyqxmd.com/read/27877084/rna-interference-of-chitin-synthase-genes-inhibits-chitin-biosynthesis-and-affects-larval-performance-in-leptinotarsa-decemlineata-say
#10
Ji-Feng Shi, Li-Li Mu, Xu Chen, Wen-Chao Guo, Guo-Qing Li
Dietary introduction of bacterially expressed double-stranded RNA (dsRNA) has great potential for management of Leptinotarsa decemlineata. Identification of the most attractive candidate genes for RNA interference (RNAi) is the first step. In the present paper, three complete chitin synthase cDNA sequences (LdChSAa, LdChSAb and LdChSB) were cloned. LdChSAa and LdChSAb, two splicing variants of LdChSA gene, were highly expressed in ectodermally-derived epidermal cells forming epidermis, trachea, foregut and hindgut, whereas LdChSB was mainly transcribed in midgut cells...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27843859/a-study-to-find-depression-in-patients-attending-dermatological-opd-in-a-teaching-hospital
#11
Abhinit Kumar, Kunal Kumar, Praneta Swarup, Shitiz Goel, Abhay Singh Tomar
INTRODUCTION: The relationship between skin and the brain exists because the brain, as the center of psychological functions, and the skin have the same ectodermal origin and are affected by the same hormones and neurotransmitters. Skin disorder can be a potential source of emotional distress and psychiatric illness leading to impaired psychosocial adjustments. AIMS AND OBJECTIVES: The aim and objective of this study was to find psychiatric depression in patients attending dermatology outpatient department (OPD)...
April 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/27833997/ontogeny-of-pioneer-neurons-in-the-antennal-nervous-system-of-the-grasshopper-schistocerca-gregaria
#12
George Boyan, Erica Ehrhardt
The nervous system of the antenna of the grasshopper Schistocerca gregaria consists of two nerve tracts in which sensory cells project their axons to the brain. Each tract is pioneered early in embryogenesis by a pair of identified cells located apically in the antennal lumen. The pioneers are thought to originate in the epithelium of the antenna and then delaminate into the lumen where they commence axogenesis. However, unambiguous molecular identification of these cells in the epithelium, of an identifiable precursor, and of their mode of generation has been lacking...
November 10, 2016: Development Genes and Evolution
https://www.readbyqxmd.com/read/27833730/general-diseases-influence-on-peri-implantitis-development-a-systematic-review
#13
REVIEW
Zygimantas Guobis, Ingrida Pacauskiene, Inesa Astramskaite
OBJECTIVES: To systematically review the influence of systemic diseases or medications used in their treatment on the dental implant therapy success. MATERIAL AND METHODS: The search strategy was implemented on the National Library of Medicine database (MEDLINE) (Ovid) and EMBASE electronic databases between January 2006 and January 2016. Human studies with available English articles analysing the relationship between dental implant therapy success and systemic diseases, such as diabetes mellitus, AIDS/HIV, rheumatoid arthritis, osteoporosis, Crohn's disease, cardiovascular diseases, scleroderma, Sjögren's syndrome, lichen planus, ectodermal dysplasia, post-transplantation status, were included in present review according to the PRISMA guidelines...
July 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/27833038/characterization-of-glutathione-peroxidase-diversity-in-the-symbiotic-sea-anemone-anemonia-viridis
#14
Alexis Pey, Thamilla Zamoum, Richard Christen, Pierre-Laurent Merle, Paola Furla
Cnidarians living in symbiosis with photosynthetic dinoflagellates (commonly named zooxanthellae) are exposed to high concentrations of reactive oxygen species (ROS) upon illumination. To quench ROS production, both the cnidarian host and zooxanthellae express a full suite of antioxidant enzymes. Studying antioxidative balance is therefore crucial to understanding how symbiotic cnidarians cope with ROS production. We characterized glutathione peroxidases (GPx) in the symbiotic cnidarian Anemonia viridis by analysis of their isoform diversity, their activity distribution in the three cellular compartments (ectoderm, endoderm and zooxanthellae) and their involvement in the response to thermal stress...
November 7, 2016: Biochimie
https://www.readbyqxmd.com/read/27829775/ellis-van-creveld-syndrome-in-siblings-a-rare-case-report
#15
Sabitha Gokulraj, N Mohan, J Babususai Raj, S Yasmeen Ahamed, C J Stephen Arokiaraj, A Cicilia Subbulakshmi
Ellis-Van Creveld syndrome or chondroectodermal dysplasia is a rare autosomal recessive disorder presenting several skeletal manifestations and congenital heart malformations. Ellis-Van Creveld syndrome comprises of a tetrad of clinical manifestations of chondrodysplasia, polydactyly, ectodermal dysplasia, and cardiac defects. Here, we are presenting a very rare case of Ellis-Van Creveld syndrome in siblings.
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27829416/tyrosinase-inhibition-and-antioxidant-properties-of-asphodelus-microcarpus-extracts
#16
Amalia Di Petrillo, Ana Maria González-Paramás, Benedetta Era, Rosaria Medda, Francesca Pintus, Celestino Santos-Buelga, Antonella Fais
BACKGROUND: Asphodelus microcarpus belongs to the family Liliaceae that include several medicinal plants. In the traditional medicine plants of the genus Asphodelus are used to treat skin disorders such as ectodermal parasites, psoriasis, microbial infection and for lightening freckles. In order to find novel skin depigmenting agents, the present work was carry out to evaluate antioxidant activity and tyrosinase inhibitory potential of leaves, flowers and tubers extracts of A. microcarpus...
November 9, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27822392/prosthetic-management-of-a-child-with-hypohidrotic-ectodermal-dysplasia-6-year-follow-up
#17
Antonione Santos Bezerra Pinto, Moara E Silva Conceição Pinto, Cinthya Melo do Val, Leonam Costa Oliveira, Cristhyane Costa de Aquino, Daniel Fernando Pereira Vasconcelos
Ectodermal dysplasia (ED) is a genetically heterogeneous condition resulting from clinical anomalies of structures derived from the ectoderm, such as the hair, nails, sweat glands, and teeth. This clinical report presents the case of a child diagnosed with hypohidrotic ED at 2 years of age; clinical and imaging evaluation was performed with 6-year follow-up, and we present details of the prosthetic dental care, with a 12-month follow-up. The patient's masticatory capacity had improved, leading to the child gaining 4 kg...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27817781/-a-gene-study-of-a-family-with-hidrotic-ectodermal-dysplasia
#18
Wen-Xing Qiao, Li Liu
OBJECTIVE: To investigate the clinical features and molecular mechanism of hidrotic ectodermal dysplasia (HED). METHODS: A clinical and gene study was performed for five generations (91 people) in the family of one proband with HED. GJB6 gene detection was performed for 7 patients and 3 normal people in this family. RESULTS: Among the 91 people in this family, there were 17 HED patients, who were manifested as having dysplasia of the fingernails and toenails and sparse or absent hair or body hair...
November 2016: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/27816526/cuticle-morphogenesis-in-crustacean-embryonic-and-postembryonic-stages
#19
REVIEW
Polona Mrak, Urban Bogataj, Jasna Štrus, Nada Žnidaršič
The crustacean cuticle is a chitin-based extracellular matrix, produced in general by epidermal cells and ectodermally derived epithelial cells of the digestive tract. Cuticle morphogenesis is an integrative part of embryonic and postembryonic development and it was studied in several groups of crustaceans, but mainly with a focus on one selected aspect of morphogenesis. Early studies were focused mainly on in vivo or histological observations of embryonic or larval molt cycles and more recently, some ultrastructural studies of the cuticle differentiation during development were performed...
December 2, 2016: Arthropod Structure & Development
https://www.readbyqxmd.com/read/27812534/data-on-micrornas-and-microrna-targeted-mrnas-in-xenopus-ectoderm
#20
Vrutant V Shah, Benjamin Soibam, Ruth A Ritter, Ashley Benham, Jamina Oomen, Amy K Sater
Small RNAs from early neural (i.e., Noggin-expressing, or NOG) and epidermal (expressing a constitutively active BMP4 receptor, CABR) ectoderm in Xenopus laevis were sequenced to identify microRNAs (miRs) expressed in each tissue. Argonaute-associated mRNAs were isolated and sequenced to identify genes that are regulated by microRNAs in these tissues. Interactions between these ectodermal miRs and selected miR-regulated mRNAs were predicted using the PITA algorithm; PITA predictions for over 600 mRNAs are presented...
December 2016: Data in Brief
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