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craniofacial growth and development

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https://www.readbyqxmd.com/read/28802359/transmission-analysis-of-tgfb1-gene-polymorphisms-in-non-syndromic-cleft-lip-with-or-without-cleft-palate
#1
Ginila T Raju, Bhaskar V K S Lakkakula, Jyotsna Murthy, Munirajan Arasambattu Kannan, Solomon F D Paul
OBJECTIVES: Transforming growth factor beta1 (TGF-β1) plays a significant role in craniofacial development. Previous linkage studies reported that the TGF-β1-locus at 19q13.1 harbour predisposing genes for non-syndromic oral clefts. In the present study case parents triads were evaluated to find the transmission effects of genetic variants in TGF- β1 towards non-syndromic cleft lip or palate (NSCL/P). METHODS: Using allelic discrimination method148 families (case-parent triads) were assessed for single nucleotide polymorphisms (SNPs) in TGF-β1 gene...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28794913/wolf-hirschhorn-syndrome-clinical-and-genetic-data-from-a-first-case-diagnosed-in-central-africa
#2
Sébastien Mbuyi-Musanzayi, Aimé Lumaka, Toni Lubala Kasole, Erick Kasamba Ilunga, Bienvenu Yogolelo Asani, Prosper Lukusa Tshilobo, Prosper Kalenga Muenze, Hervé Reychler, François Tshilombo Katombe, Koenraad Devriendt
Wolf-Hirschhorn syndrome (WHS) is a multiple congenital anomaly-intellectual disability syndrome caused by a deletion involving chromosome 4p16.3. We report clinical and genetic findings of the first WHS patient diagnosed in central Africa. This boy who presented with cleft palate, microcephaly, severe growth delay, and intellectual disability was 12 years old. Typical craniofacial features were present, though the characteristic "Greek helmet" appearance of the nose was less evident, probably reflecting a variable expression related to the genetic background...
September 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/28762259/congenital-muscle-dystrophy-and-diet-consistency-affect-mouse-skull-shape-differently
#3
Alexander Spassov, Viviana Toro-Ibacache, Mirjam Krautwald, Heinrich Brinkmeier, Kornelius Kupczik
The bones of the mammalian skull respond plastically to changes in masticatory function. However, the extent to which muscle function affects the growth and development of the skull, whose regions have different maturity patterns, remains unclear. Using muscle dissection and 3D landmark-based geometric morphometrics we investigated the effect of changes in muscle function established either before or after weaning, on skull shape and muscle mass in adult mice. We compared temporalis and masseter mass and skull shape in mice with a congenital muscle dystrophy (mdx) and wild type (wt) mice fed on either a hard or a soft diet...
July 31, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28757702/clinical-characteristics-of-crouzon-syndrome
#4
L Balyen, L S Deniz Balyen, S Pasa
Crouzon syndrome (CS) is an genetic disorder with autosomal dominant inheritance caused by mutation of the gene for fibroblast growth factor receptor 2 (FGFR2) was described as one of the varieties of craniosynostosis. In this presented case, premature closure of the sutures had caused restricted skull growth and lack of space for the growing brain resulted to shallowed eyes and cranial and ophthalmic deformities and impairment in tooth development. Management of a patient of CS has two components. First is the release of prematurely fused sutures based on evidence of raised intracranial pressure...
May 2017: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/28749845/postnatal-development-of-the-spheno-occipital-synchondrosis-a-histological-analysis
#5
Jiewen Dai, Yuheng Lin, Ouyang Ningjuan, Jun Shi, Dedong Yu, Guofang Shen
The spheno-occipital synchondrosis (SOS) in cranial base is an important growth center for the craniofacial skeleton, and also is a guide rail for development of the maxilla, midface, and mandible. Previous studies showed that SOS may be a treatment target for youngsters with midfacial hypoplasia and small cranial vault secondary to craniosynostosis. However, most of studies about the SOS are based on imaging data. In this study, we try to explore the characteristics of postnatal development of the mouse SOS based on histological analysis...
July 26, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28737426/posterior-cranial-base-natural-growth-and-development-a-systematic-review
#6
Kris Currie, Dena Sawchuk, Humam Saltaji, Heesoo Oh, Carlos Flores-Mir, Manuel Lagravere
OBJECTIVE: To provide a synthesis of the published studies evaluating the natural growth and development of the human posterior cranial base (S-Ba). MATERIALS AND METHODS: The search was performed on MEDLINE, Embase, PubMed, and all EBM Reviews electronic databases. In addition, reference lists of the included studies were hand-searched. Articles were included if they analyzed posterior cranial-base growth in humans specifically. Study selection, data extraction, and risk of bias assessment were completed in duplicate...
July 24, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28697314/grainyhead-like-transcription-factors-in-craniofacial-development
#7
M R Carpinelli, M E de Vries, S M Jane, S Dworkin
Craniofacial development in vertebrates involves the coordinated growth, migration, and fusion of several facial prominences during embryogenesis, processes governed by strict genetic and molecular controls. A failure in any of the precise spatiotemporal sequences of events leading to prominence fusion often leads to anomalous facial, skull, and jaw formation-conditions termed craniofacial defects (CFDs). Affecting approximately 0.1% to 0.3% of live births, CFDs are a highly heterogeneous class of developmental anomalies, which are often underpinned by genetic mutations...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28692520/disruption-of-hedgehog-signaling-by-vismodegib-leads-to-cleft-palate-and-delayed-osteogenesis-in-mice
#8
Shixian Zhang, Chengyong Wang, Changfu Xie, Yongzhen Lai, Di Wu, Guowu Gan, Weihui Chen
The function of hedgehog signaling has previously been shown to be crucial for craniofacial development. In this study, we treated C57/BL6J mice with the hedgehog pathway inhibitor vismodegib by oral gavage to establish a stable vismodegib-induced cleft palate model. At E10.5 and E12.5, mice in the experimental group were treated with 100 mg/kg of vismodegib, whereas mice in the control group were treated with solvent. The treated pregnant mice were sacrificed on E13.5, E14.5, E15.5, and E16.5. Palatal shelf growth was evaluated via histological and immunohistochemical analyses as well as palatal organ culture...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28692499/would-be-prophylactic-administrations-of-low-concentration-of-alendronate-an-alternative-for-improving-the-craniofacial-bone-repair-a-preliminary-study-focused-in-the-period-of-cellular-differentiation-and-tissue-organization
#9
Isabella Göhringer, Carmem L Storrer Muller, Emanuelle Juliana Cunha, Giuliene Nunes De Souza Passoni, Juliana Souza Vieira, João Cesar Zielak, Rafaela Scariot, Tatiana Miranda Deliberador, Allan Fernando Giovanini
BACKGROUND: Alendronate (ALN) is a nitrogen-bisphosphonate that may induce an anabolic effect on craniofacial bone repair when administrated in low doses. Based on this premise, this study analyzed the influence of prophylactic low doses of ALN on bone healing in defects created in rabbit mandible. METHODS: A 5 × 2-mm diameter deep defect was created in the calvaria of 28 rabbits. Fourteen of these rabbits received previously 50 μg/kg of 1% sodium ALN for 4 weeks, while the other rabbits received only 0...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28643915/preface-to-coast-2016-innovators-workshop-on-personalized-and-precision-orthodontic-therapy
#10
J C Nickel, D A Covell, S A Frazier-Bowers, S Kapila, S S Huja, L R Iwasaki
OBJECTIVE: A second focused workshop explored how to transfer novel findings into clinical orthodontic practice. SETTING AND SAMPLE POPULATION: Participants met in West Palm Beach (Florida, USA), on 9-11 September 2016 for the Consortium for Orthodontic Advances in Science and Technology 2016 Innovators' Workshop (COAST). Approximately 65 registered attendees considered and discussed information from 27 to 34 speakers, 8 to 15 poster presenters and four lunch-hour focus group leaders...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643905/diverse-contribution-of-col2a1-expressing-cells-to-the-craniofacial-skeletal-cell-lineages
#11
N Sakagami, W Ono, N Ono
OBJECTIVES: Craniofacial skeletal development requires deliberate coordination of two distinct mechanisms of endochondral and intramembranous ossification. Col2a1-expressing cells encompass growth-associated skeletal progenitors in endochondral bones of the limb. The objective of this study was to determine the contribution of Col2a1-expressing cells to the craniofacial skeletal cell lineages. We hypothesize that Col2a1-expressing progenitors significantly contribute to various modes of ossification associated with the craniofacial development...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28630177/integrated-genome-and-transcriptome-sequencing-identifies-a-noncoding-mutation-in-the-genome-replication-factor-donson-as-the-cause-of-microcephaly-micromelia-syndrome
#12
Gilad D Evrony, Dwight R Cordero, Jun Shen, Jennifer N Partlow, Timothy W Yu, Rachel E Rodin, R Sean Hill, Michael E Coulter, Anh-Thu N Lam, Divya Jayaraman, Dianne Gerrelli, Diana G Diaz, Chloe Santos, Victoria Morrison, Antonella Galli, Ulrich Tschulena, Stefan Wiemann, M Jocelyne Martel, Betty Spooner, Steven C Ryu, Princess C Elhosary, Jillian M Richardson, Danielle Tierney, Christopher A Robinson, Rajni Chibbar, Dana Diudea, Rebecca Folkerth, Sheldon Wiebe, A James Barkovich, Ganeshwaran H Mochida, James Irvine, Edmond G Lemire, Patricia Blakley, Christopher A Walsh
While next-generation sequencing has accelerated the discovery of human disease genes, progress has been largely limited to the "low hanging fruit" of mutations with obvious exonic coding or canonical splice site impact. In contrast, the lack of high-throughput, unbiased approaches for functional assessment of most noncoding variants has bottlenecked gene discovery. We report the integration of transcriptome sequencing (RNA-seq), which surveys all mRNAs to reveal functional impacts of variants at the transcription level, into the gene discovery framework for a unique human disease, microcephaly-micromelia syndrome (MMS)...
August 2017: Genome Research
https://www.readbyqxmd.com/read/28593555/genetic-analysis-of-irf6-a-gene-involved-in-craniofacial-midline-formation-in-relation-to-pituitary-and-facial-morphology-of-patients-with-idiopathic-growth-hormone-deficiency
#13
Eline Starink, Anita C S Hokken-Koelega, Theo J Visser, Janneke Baan, Robin P Peeters, Laura C G de Graaff
INTRODUCTION: Growth hormone is secreted by the pituitary gland, which forms part of the craniofacial midline. IRF6 encodes a transcription factor involved in the development of the craniofacial midline and mutations in IRF6 are known to disturb craniofacial development. Craniofacial and pituitary development are closely related. After whole exome sequencing revealed a new mutation in IRF6 in a family with Idiopathic Growth Hormone Deficiency (IGHD), we screened the remainder of our IGHD cohort for mutations in this gene and related their genotypes to pituitary and craniofacial morphology...
June 7, 2017: Pituitary
https://www.readbyqxmd.com/read/28592837/maternally-derived-15q11-2-q13-1-duplication-and-h19-dmr-hypomethylation-in-a-patient-with-silver-russell-syndrome
#14
Sumito Dateki, Masayo Kagami, Keiko Matsubara, Kei Izumi, Satoshi Watanabe, Akiko Nakatomi, Tatsuro Kondoh, Maki Fukami, Hiroyuki Moriuchi
Silver-Russell syndrome (SRS) is a congenital developmental disorder characterized by intrauterine and postnatal growth failure, craniofacial features (including a triangular shaped face and broad forehead), relative macrocephaly, protruding forehead, body asymmetry and feeding difficulties. Hypomethylation of the H19 differentially methylated region (DMR) on chromosome 11p15.5 is the most common cause of the SRS phenotype. We report the first SRS patient with hypomethylation of the H19-DMR and maternally derived 15q11...
June 8, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28574949/minor-suture-fusion-in-syndromic-craniosynostosis
#15
Christopher M Runyan, Wen Xu, Michael Alperovich, Jonathan P Massie, Gina Paek, Benjamin A Cohen, David A Staffenberg, Roberto L Flores, Jesse A Taylor
BACKGROUND: Infants with craniofacial dysostosis syndromes may present with midface abnormalities but without major (calvarial) suture synostosis and head shape anomalies. Delayed presentation of their calvarial phenotype is known as progressive postnatal craniosynostosis. Minor sutures/synchondroses are continuations of major sutures toward and within the skull base. We hypothesized that minor suture synostosis is present in infants with syndromic, progressive postnatal craniosynostosis, and is associated with major suture synostosis...
May 31, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28566514/modelling-human-skull-growth-a-validated-computational-model
#16
Joseph Libby, Arsalan Marghoub, David Johnson, Roman H Khonsari, Michael J Fagan, Mehran Moazen
During the first year of life, the brain grows rapidly and the neurocranium increases to about 65% of its adult size. Our understanding of the relationship between the biomechanical forces, especially from the growing brain, the craniofacial soft tissue structures and the individual bone plates of the skull vault is still limited. This basic knowledge could help in the future planning of craniofacial surgical operations. The aim of this study was to develop a validated computational model of skull growth, based on the finite-element (FE) method, to help understand the biomechanics of skull growth...
May 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28562424/biology-of-bone-formation-fracture-healing-and-distraction-osteogenesis
#17
Christopher M Runyan, Kyle S Gabrick
Distraction osteogenesis is a bone-regenerative process in which an osteotomy is followed by distraction of the surrounding vascularized bone segments, with formation of new bone within the distraction gap. Distraction osteogenesis is efficacious for reconstructing critical sized bony defects in the appendicular and craniofacial skeleton. To provide opportunity to expand applications of distraction osteogenesis, it is important to have a thorough understanding of the underlying molecular biology and physiology of bone development and fracture healing...
May 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28558659/the-cyprinodon-variegatus-genome-reveals-gene-expression-changes-underlying-differences-in-skull-morphology-among-closely-related-species
#18
Ezra S Lencer, Wesley C Warren, Richard Harrison, Amy R McCune
BACKGROUND: Understanding the genetic and developmental origins of phenotypic novelty is central to the study of biological diversity. In this study we identify modifications to the expression of genes at four developmental stages that may underlie jaw morphological differences among three closely related species of pupfish (genus Cyprinodon) from San Salvador Island, Bahamas. Pupfishes on San Salvador Island are trophically differentiated and include two endemic species that have evolved jaw morphologies unlike that of any other species in the genus Cyprinodon...
May 30, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28548091/cellular-interplay-via-cytokine-hierarchy-causes-pathological-cardiac-hypertrophy-in-raf1-mutant-noonan-syndrome
#19
Jiani C Yin, Mathew J Platt, Xixi Tian, Xue Wu, Peter H Backx, Jeremy A Simpson, Toshiyuki Araki, Benjamin G Neel
Noonan syndrome (NS) is caused by mutations in RAS/ERK pathway genes, and is characterized by craniofacial, growth, cognitive and cardiac defects. NS patients with kinase-activating RAF1 alleles typically develop pathological left ventricular hypertrophy (LVH), which is reproduced in Raf1(L613V/+) knock-in mice. Here, using inducible Raf1(L613V) expression, we show that LVH results from the interplay of cardiac cell types. Cardiomyocyte Raf1(L613V) enhances Ca(2+) sensitivity and cardiac contractility without causing hypertrophy...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28545565/the-combination-of-nano-calcium-sulfate-platelet-rich-plasma-gel-scaffold-with-bmp2-gene-modified-mesenchymal-stem-cells-promotes-bone-regeneration-in-rat-critical-sized-calvarial-defects
#20
Zunpeng Liu, Xue Yuan, Gabriela Fernandes, Rosemary Dziak, Ciprian N Ionita, Chunyi Li, Changdong Wang, Shuying Yang
BACKGROUND: Mesenchymal stem cells (MSCs) can be differentiated into an osteoblastic lineage in the presence of growth factors (GFs). Platelet-rich plasma (PRP), which can be easily isolated from whole blood, contains a large amount of GFs, and, therefore, promotes bone growth and regeneration. The main goal of this work was to develop and investigate the effect of a new sandwich-like bone scaffold which combines a nano-calcium sulfate (nCS) disc along with PRP fibrin gel (nCS/PRP) with BMP2-modified MSCs on bone repair and regeneration in rat critical-sized calvarial defects...
May 25, 2017: Stem Cell Research & Therapy
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