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https://www.readbyqxmd.com/read/28719547/growth-modulation-in-achondroplasia
#1
Philip K McClure, Eray Kilinc, John G Birch
INTRODUCTION: Achondroplasia is the most common skeletal dysplasia with a rate of nearly 1/10,000. The development of lower extremity deformity is well documented, and various modes of correction have been reported. There are no reports on the use of growth modulation to correct angular deformity in achondroplasia. METHODS: Medical Records from 1985 to 2015 were reviewed for the diagnosis of achondroplasia and growth modulation procedures. Patients who had been treated for angular deformity of the legs by growth modulation were identified...
July 17, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28702065/achondroplasia-with-multiple-supplemental-supernumerary-teeth-and-multiple-talon-cusps-a-rare-case-report
#2
Jayam Raviraj, Venkata Suman, Dirasantchu Suresh, K Kartik
Achondroplasia is the most common cause of dwarfism, which is inherited as an autosomal dominant disorder, caused by genetic mutation in fibroblast growth factor 3, leading to defective maturation of chondrocytes. It is known to be associated with various oral and dental manifestations such as delayed dental development, midfacial hypoplasia and constricted maxilla with a relatively large mandible, resulting in skeletal/dental Class III malocclusion, posterior crossbite, anterior reverse jet and anterior overbite...
May 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28697878/current-insights-into-the-molecular-genetic-basis-of-dwarfism-in-livestock
#3
REVIEW
Iris J M Boegheim, Peter A J Leegwater, Hein A van Lith, Willem Back
Impairment of bone growth at a young age leads to dwarfism in adulthood. Dwarfism can be categorised as either proportionate, an overall size reduction without changes in body proportions, or disproportionate, a size reduction in one or more limbs, with changes in body proportions. Many forms of dwarfism are inherited and result from structural disruptions or disrupted signalling pathways. Hormonal disruptions are evident in Brooksville miniature Brahman cattle and Z-linked dwarfism in chickens, caused by mutations in GH1 and GHR...
June 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28693116/long-term-follow-up-of-a-child-with-klinefelter-syndrome-and-achondroplasia-from-infancy-to-16-years
#4
Jessica D Arditi, Loretta Thomaidis, Helen Frysira, Artemis Doulgeraki, George P Chrousos, Christina Kanaka-Gantenbein
BACKGROUND: Achondroplasia (ACH), an autosomal dominant skeletal dysplasia, occurs in approximately 1:20,000 births. On the other hand, 47,XXY aneuploidy (Klinefelter syndrome [KS]) is the most common sex chromosome disorder, with a prevalence of approximately 1:600 males. To the best of our knowledge, only five cases of patients presenting both ACH and KS have been reported to date in the international literature. However, none of these cases has been longitudinally followed during the entire childhood...
June 23, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28679403/identification-and-in-silico-characterization-of-p-g380r-substitution-in-fgfr3-associated-with-achondroplasia-in-a-non-consanguineous-pakistani-family
#5
Muhammad Ajmal, Asif Mir, Muhammad Shoaib, Salman Akbar Malik, Muhammad Nasir
BACKGROUND: The dimerization efficiency of FGFR3 transmembrane domain plays a critical role in the formation of a normal skeleton through the negative regulation of bone development. Recently, gain-of-function mutations in the transmembrane domain of FGFR3 has been described associated with an aberrant negative regulation, leading to the development of achondroplasia-group disorders, including achondroplasia (ACH), hypochondroplasia (HCH) and thanatophoric dysplasia (TD). Here, we describe a non-consanguineous Pakistani family with achondroplasia to explain hereditary basis of the disease...
July 5, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28672740/long-term-follow-up-of-a-child-with-klinefelter-syndrome-and-achondroplasia-from-infancy-to-16-years
#6
Jessica D Arditi, Loretta Thomaidis, Helen Frysira, Artemis Doulgeraki, George P Chrousos, Christina Kanaka-Gantenbein
BACKGROUND: Achondroplasia (ACH), an autosomal dominant skeletal dysplasia, occurs in approximately 1:20,000 births. On the other hand, 47,XXY aneuploidy (Klinefelter syndrome [KS]) is the most common sex chromosome disorder, with a prevalence of approximately 1:600 males. To the best of our knowledge, only five cases of patients presenting both ACH and KS have been reported to date in the international literature. However, none of these cases has been longitudinally followed during the entire childhood...
July 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28661490/mutations-in-c-natriuretic-peptide-nppc-a-novel-cause-of-autosomal-dominant-short-stature
#7
Alfonso Hisado-Oliva, Alba Ruzafa-Martin, Lucia Sentchordi, Mariana F A Funari, Carolina Bezanilla-López, Marta Alonso-Bernáldez, Jimena Barraza-García, Maria Rodriguez-Zabala, Antonio M Lerario, Sara Benito-Sanz, Miriam Aza-Carmona, Angel Campos-Barros, Alexander A L Jorge, Karen E Heath
PurposeC-type natriuretic peptide (CNP) and its principal receptor, natriuretic peptide receptor B (NPR-B), have been shown to be important in skeletal development. CNP and NPR-B are encoded by natriuretic peptide precursor-C (NPPC) and natriuretic peptide receptor 2 (NPR2) genes, respectively. While NPR2 mutations have been described in patients with skeletal dysplasias and idiopathic short stature (ISS), and several Npr2 and Nppc skeletal dysplasia mouse models exist, no mutations in NPPC have been described in patients to date...
June 29, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28644737/circulatory-cnp-rescues-craniofacial-hypoplasia-in-achondroplasia
#8
S Yamanaka, Kazumasa Nakao, N Koyama, Y Isobe, Y Ueda, Y Kanai, E Kondo, T Fujii, M Miura, A Yasoda, Kazuwa Nakao, K Bessho
Achondroplasia is the most common genetic form of human dwarfism, characterized by midfacial hypoplasia resulting in occlusal abnormality and foramen magnum stenosis, leading to serious neurologic complications and hydrocephalus. Currently, surgery is the only way to manage jaw deformity, neurologic complications, and hydrocephalus in patients with achondroplasia. We previously showed that C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth of long bones and vertebrae and is also a potent stimulator in the craniofacial region, which is crucial for midfacial skeletogenesis...
June 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28617182/simultaneous-bilateral-correction-of-genu-varum-with-smart-frame
#9
Barış Özkul, Yalkin Çamurcu, Sami Sokucu, Umut Yavuz, Yunus Emre Akman, Bilal Demir
PURPOSE: The aim of this study is to evaluate clinical and radiological results of simultaneous bilateral correction of genu varum with Smart frame. METHODS: Between 2011 and 2015, a total of 25 patients (10 females, 15 males) who had bilateral genu varum deformity were operated bilaterally with tibial and fibular osteotomy in the same session, using Smart frame. The mean follow-up period was 28.7 (range, 13-45) months. All patients had bilateral tibial varus deformity...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28599087/growth-charts-for-australian-children-with-achondroplasia
#10
Louise Tofts, Sandeep Das, Felicity Collins, Karen L O Burton
Achondroplasia is an autosomal dominant disorder, the most common genetic cause of short stature in humans. Reference curves for head circumference, weight, height, and BMI are needed in clinical practice but none exist for the Australian population. This study aimed to produce head circumference, height, weight, and BMI reference percentile curves for Australian children and adolescents with achondroplasia. Measurements of head circumference, height and weight taken at clinical visits were retrospectively extracted from the electronic medical record...
June 9, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28520086/activated-fgfr3-prevents-subchondral-bone-sclerosis-during-the-development-of-osteoarthritis-in-transgenic-mice-with-achondroplasia
#11
Toshiaki Okura, Masaki Matsushita, Kenichi Mishima, Ryusaku Esaki, Taisuke Seki, Naoki Ishiguro, Hiroshi Kitoh
The purpose of this study is to investigate the morphometric changes of the subchondral bone during the development of osteoarthritis (OA) in transgenic mice with achondroplasia (Fgfr3(ach) ) carrying a heterozygous gain-of-function mutation in Fgfr3. Two OA models (spontaneously developed with age: The aging model, and surgically induced by destabilization of the medial meniscus: The DMM model) were established. Articular cartilage, epiphysis, and metaphysis of the knee joint were histologically and morphometrically compared between wild-type mice, and Fgfr3(ach) mice in both OA models...
May 18, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28511523/achondroplasia-with-polydactyly-a-case-report
#12
Caroline Frank, Sameeya Shariff, Muddepalle Pavani, Balasubramanian Karthika, Sridhar Thathekalva
An eight-year-old girl child reported to the Department of Oral Medicine and Radiology with the chief complaint of unerupted permanent teeth for past two years. The child presented features like disproportionately short stature, rhizomelic shortening of arms and legs, long face, frontal bossing and saddle nose. Based on the findings of chest and spine radiographs and ultrasound the case was diagnosed as a rare bone disorder "Achondroplasia". This case also presents a unique feature of polydactyly. Polydactyly is a manifestation in clinical medicine because it can serve as an indicator for a plethora of congenital anamolies...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28502457/anesthesia-for-pulmonary-endarterectomy-and-extracorporeal-membrane-oxygenation-in-a-patient-with-achondroplasia
#13
Daniel Sellers, Marc De Perrot, Karen McRae, Peter Slinger
No abstract text is available yet for this article.
February 8, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28501952/final-adult-height-in-long-term-growth-hormone-treated-achondroplasia-patients
#14
Daisuke Harada, Noriyuki Namba, Yuki Hanioka, Kaoru Ueyama, Natsuko Sakamoto, Yukako Nakano, Masafumi Izui, Yuiko Nagamatsu, Hiroko Kashiwagi, Miho Yamamuro, Yoshihito Ishiura, Ayako Ogitani, Yoshiki Seino
The objective of this study was to evaluate the gain in final height of achondroplasia (ACH) patients with long-term growth hormone (GH) treatment. We analyzed medical data of 22 adult patients (8 males and 14 females) treated with GH at a dose of 0.05 mg/kg/day. Optionally, tibial lengthening (TL) was performed with the Ilizalov method in 15 patients and TL as well as femoral lengthening (FL) in 6 patients. Concomitant gonadal suppression therapy with buserelin acetate was applied in 13 patients. The mean treatment periods with GH were 10...
July 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28497003/achondroplasia-and-biliary-atresia-a-rare-association-and-review-of-literature
#15
Ranjit I Kylat
Achondroplasia (ACH) occurs in most cases as de novo mutations of the gene-encoding fibroblast growth factor receptor 3 (FGFR3). Biliary atresia (BA) is a progressive neonatal inflammatory and fibro-obliterative cholangiopathy affecting the extra- and intrahepatic biliary tree to varying degrees, and it results in obstruction to bile flow and cholestatic jaundice in neonates. BA is thought to be a multifactorial disease, genome association studies have shown abnormalities in susceptibility genes, and levels of fibroblast growth factor 21 (FGF21) and fibroblast growth factor 23 (FGF23) have been noted to be increased...
June 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/28481811/trochanteric-entry-for-femoral-lengthening-nails-in-children-is-it-safe
#16
Ahmed I Hammouda, Julio J Jauregui, Martin G Gesheff, Shawn C Standard, John E Herzenberg
BACKGROUND: Antegrade intramedullary (IM) nailing for skeletally immature femur fractures can damage the capital femoral epiphysis blood supply, leading to avascular necrosis (AVN) of the femoral head. Reported AVN rates are 2% for piriformis entry and 1.4% for trochanteric entry. None of previous reports described IM lengthening nails for limb lengthening procedures. We have used self-lengthening telescopic nails with a proximal Herzog bend and standard trochanteric entry for femoral lengthening in children...
June 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28428035/evaluation-of-the-external-fixator-truelok-hexapod-system-for-tibial-deformity-correction-in-children
#17
Sébastien Pesenti, Christopher A Iobst, Franck Launay
BACKGROUND: Tibial deformities are common in paediatric orthopaedic practice. Correcting multiplanar tibial deformities associated with lower limb length discrepancycan be challenging. Hexapod external fixation with gradual correction has been proven effective in this situation. OBJECTIVE: To assess clinical and radiological outcomes of gradual tibial deformity correction using the external fixator TL-HEX(TM)(Orthofix) in children. HYPOTHESIS: TL-HEX™ is effective in correcting tibial deformities in children...
April 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28374958/a-height-for-age-growth-reference-for-children-with-achondroplasia-expanded-applications-and-comparison-with-original-reference-data
#18
Julie Hoover-Fong, John McGready, Kerry Schulze, Adekemi Yewande Alade, Charles I Scott
The height-for-age (HA) reference currently used for children with achondroplasia is not adaptable for electronic records or calculation of HA Z-scores. We report new HA curves and tables of mean and standard deviation (SD) HA, for calculating Z-scores, from birth-16 years in achondroplasia. Mixed longitudinal data were abstracted from medical records of achondroplasia patients from a single clinical practice (CIS, 1967-2004). Gender-specific height percentiles (5, 25, 50, 75, 95th) were estimated across the age continuum, using a 2 month window per time point smoothed by a quadratic smoothing algorithm...
May 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28364903/long-term-follow-up-of-a-patient-with-achondroplasia-treated-with-an-orthodontic-approach
#19
Hiroyo Mori, Kazuma Matsumoto, Nobuhiko Kawai, Takashi Izawa, Shinya Horiuchi, Eiji Tanaka
We successfully treated a patient with achondroplasia with conventional orthodontic techniques. It was followed by long-term retention. The patient, a 12-year-old boy, had chief complaints of occlusal disturbance and mandibular protrusion. He had been diagnosed with achondroplasia and had growth hormone treatment in his early teenage years. His facial profile was concave with a bulging forehead and a retrognathic maxilla. It was characterized by a skeletal Class III jaw-base relationship with a retropositioned maxilla...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28298517/phosphoproteomics-of-fibroblast-growth-factor-1-fgf1-signaling-in-chondrocytes-identifying-the-signature-of-inhibitory-response
#20
Jessica R Chapman, Olga Katsara, Rachel Ruoff, David Morgenstern, Shruti Nayak, Claudio Basilico, Beatrix Ueberheide, Victoria Kolupaeva
Fibroblast growth factor (FGF) signaling is vital for many biological processes, beginning with development. The importance of FGF signaling for skeleton formation was first discovered by the analysis of genetic FGFR mutations which cause several bone morphogenetic disorders, including achondroplasia, the most common form of human dwarfism. The formation of the long bones is mediated through proliferation and differentiation of highly specialized cells - chondrocytes.Chondrocytes respond to FGF with growth inhibition, a unique response which differs from the proliferative response of the majority of cell types; however, its molecular determinants are still unclear...
June 2017: Molecular & Cellular Proteomics: MCP
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