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"Idiopathic Short Stature"

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https://www.readbyqxmd.com/read/29025200/novel-genetic-cause-of-idiopathic-short-stature
#1
REVIEW
Min Jae Kang
Traditionally, the growth hormone - insulin-like growth factor I (GH - IGF-I) axis is the most important signaling pathway in linear growth, and defects in this axis present as growth hormone deficiencies or IGF-I deficiencies. However, subtle changes in serum levels of GH or IGF-I, caused by gene mutations involved in the GH - IGF-I axis, can present as idiopathic short stature (ISS). This paper briefly discusses GHR and IGFALS. In addition, recent studies have shown that many factors, including paracrine signals, extracellular matrix, and intracellular mechanisms of chondrocytes, regulate the growth plate independent of the GH - IGF-I system...
September 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28960605/children-s-psychosocial-functioning-and-parents-quality-of-life-in-paediatric-short-stature-the-mediating-role-of-caregiving-stress
#2
Neuza Silva, Monika Bullinger, Rachel Sommer, Anja Rohenkohl, Stefanie Witt, Julia Quitmann
OBJECTIVES: On the basis of the multidimensional model of the caregiving process, this study aimed (a) to compare the levels of quality of life (QoL) and psychological problems of children with short stature and the levels of caregiving stress and QoL of their parents, between diagnostic, treatment, and current height deviation groups, and (b) to examine the direct and indirect links, via caregiving stress, between children's psychosocial functioning and their parents' QoL. METHOD: The sample was collected in 5 European countries and comprised 238 dyads of 8- to 18-year-old children and adolescents with a clinical diagnosis of growth hormone deficiency or idiopathic short stature and one of their parents...
September 27, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28939912/genetic-screening-confirms-heterozygous-mutations-in-acan-as-a-major-cause-of-idiopathic-short-stature
#3
Nadine N Hauer, Heinrich Sticht, Sangamitra Boppudi, Christian Büttner, Cornelia Kraus, Udo Trautmann, Martin Zenker, Christiane Zweier, Antje Wiesener, Rami Abou Jamra, Dagmar Wieczorek, Jaqueline Kelkel, Anna-Maria Jung, Steffen Uebe, Arif B Ekici, Tilman Rohrer, André Reis, Helmuth-Günther Dörr, Christian T Thiel
Short stature is a common pediatric disorder affecting 3% of the population. However, the clinical variability and genetic heterogeneity prevents the identification of the underlying cause in about 80% of the patients. Recently, heterozygous mutations in the ACAN gene coding for the proteoglycan aggrecan, a main component of the cartilage matrix, were associated with idiopathic short stature. To ascertain the prevalence of ACAN mutations and broaden the phenotypic spectrum in patients with idiopathic short stature we performed sequence analyses in 428 families...
September 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28902627/serum-%C3%AE-klotho-levels-are-not-informative-for-the-evaluation-of-growth-hormone-secretion-in-short-children
#4
Cristina Meazza, Heba H Elsedfy, Randa I Khalaf, Fiorenzo Lupi, Sara Pagani, Mohamed El Kholy, Carmine Tinelli, Giorgio Radetti, Mauro Bozzola
BACKGROUND: α-Klotho is a transmembrane protein that can be cleaved and act as a circulating hormone (s-klotho). s-Klotho serum levels seem to reflect growth hormone (GH) secretory status. We investigated the role of s-klotho as a reliable marker of GH secretion in short children and the factors influencing its secretion. METHODS: We enrolled 40 short Egyptian children (20 GH deficiency [GHD] and 20 idiopathic short stature [ISS]). They underwent a pegvisomant-primed insulin tolerance test (ITT) and were accordingly reclassified as 16 GHD and 24 ISS...
October 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28885935/automated-bone-age-analysis-with-lossy-image-files
#5
Jordan E Pinsker, Michael S L Ching, Daniel P Chiles, Michael Lustik, C Becket Mahnke, Veronica J Rooks
BACKGROUND: In our U.S. Department of Defense hospital system, pediatric endocrinology and radiology resources to evaluate bone age radiographs are limited. Our tertiary care center provides expert specialty support to remotely stationed beneficiaries at more than 30 Department of Defense medical facilities using a well-established, asynchronous, Health Insurance Portability and Accountability Act compliant system that allows for physician-to-physician teleconsultation. Up to 14% of these teleconsultations are for endocrinology assessment, many of which include bone age analysis...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28877703/influence-of-growth-hormone-treatment-on-radiographic-indices-of-the-spine-propensity-matched-analysis
#6
Yeo-Hon Yun, Soon-Sun Kwon, Youngdo Koh, Dong-Jun Kim, Jonghyun Ahn, Seung Yeol Lee
BACKGROUND: We performed this study to investigate the influence of recombinant human growth hormone (rhGH) therapy on radiographic indices of the spine using propensity-matched analysis. METHODS: Patients with idiopathic short stature who had undergone both growth hormone therapy and whole-spine radiographs more than twice prior to 15 years of age were included in the patient group. Other patients who had undergone whole-spine radiographs more than twice prior to the same age during regular checkups for idiopathic scoliosis formed the control group...
September 6, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28873385/ghrelin-and-growth
#7
Reena Perchard, Peter E Clayton
Ghrelin is a pleiotropic hormone, whose effect on growth hormone secretion, through the growth hormone secretagogue (GHS) receptor, is one of its many actions. Relationships between GHS receptor gene variants and human height, both in healthy individuals and in patients with growth disorders have been identified. These include constitutional delay in growth and puberty, idiopathic short stature, and isolated growth hormone deficiency. In this review, we provide an overview of the role of ghrelin in growth.
2017: Endocrine Development
https://www.readbyqxmd.com/read/28852938/medicalising-short-children-with-growth-hormone-ethical-considerations-of-the-underlying-sociocultural-aspects
#8
Maria Cristina Murano
In 2003, the Food and Drug Administration approved the use of growth hormone treatment for idiopathic short stature children, i.e. children shorter than average due to an unknown medical cause. Given the absence of any pathological conditions, this decision has been contested as a case of medicalisation. The aim of this paper is to broaden the debate over the reasons for and against the treatment, to include considerations of the sociocultural phenomenon of the medicalisation of short stature, by means of a critical understanding of the concept of medicalisation...
August 29, 2017: Medicine, Health Care, and Philosophy
https://www.readbyqxmd.com/read/28830906/autosomal-recessive-chondrodysplasia-with-severe-short-stature-caused-by-a-biallelic-col10a1-variant
#9
Noor Ul Ain, Outi Makitie, Sadaf Naz
BACKGROUND: Heterozygous mutations in COL10A1 underlie metaphyseal chondrodysplasia, Schmid type (MCDS), an autosomal dominant skeletal dysplasia. OBJECTIVE: To identify the causative variant in a large consanguineous Pakistani family with severe skeletal dysplasia and marked lower limb deformity. METHODS: Whole exome sequencing was completed followed by Sanger sequencing to verify segregation of the identified variants. In silico variant pathogenicity predictions and amino acid conservation analyses were performed...
August 22, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28768959/next-generation-sequencing-based-mutation-screening-of-86-patients-with-idiopathic-short-stature
#10
Atsushi Hattori, Yuko Katoh-Fukui, Akie Nakamura, Keiko Matsubara, Tsutomu Kamimaki, Hiroyuki Tanaka, Sumito Dateki, Masanori Adachi, Koji Muroya, Shinobu Yoshida, Shinobu Ida, Marie Mitani, Keisuke Nagasaki, Tsutomu Ogata, Erina Suzuki, Kenichiro Hata, Kazuhiko Nakabayashi, Yoichi Matsubara, Satoshi Narumi, Toshiaki Tanaka, Maki Fukami
Although mutations in ACAN, FGFR3, NPR2, and SHOX typically lead to skeletal dysplasia, and mutations in GHRHR, GH1, GHR, STAT5B, IGF1, IGFALS, and IGF1R usually underlie hormonal defects of the growth hormone (GH)-insulin-like growth factor 1 (IGF1) axis, such mutations have also been identified in patients with idiopathic short stature (ISS). Of these, SHOX abnormalities are known to account for a certain percentage of ISS cases, whereas the frequency of mutations in the other 10 genes in ISS cohorts remains unknown...
August 3, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28690991/effect-of-growth-hormone-treatment-on-children-with-idiopathic-short-stature-and-idiopathic-growth-hormone-deficiency
#11
Minji Im, Yong-Dae Kim, Heon-Seok Han
PURPOSE: There are inconsistencies in the results reported in a small number of previous studies into growth hormone (GH) treatment in Korean children with idiopathic short stature (ISS) and idiopathic growth hormone deficiency (IGHD). Thus, the authors retrospectively compared the effects of GH in ISS and IGHD. METHODS: From the medical records of 26 ISS and 30 IGHD children, auxological and biochemical changes including chronologic age (CA), bone age (BA), height standard deviation score (HT-SDS), predicted adult height (PAH), midparental height (MPH), insulin-like growth factor-1 (IGF-1), and insulin-like growth factor binding protein-3 (IGFBP-3) were compared...
June 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28675583/experiencing-health-related-quality-of-life-in-paediatric-short-stature-a-cross-cultural-analysis-of-statements-from-patients-and-parents
#12
Rachel Sommer, Monika Bullinger, John Chaplin, Ju-Ky Do, Mick Power, Andreas Pleil, Julia Quitmann
OBJECTIVES: Direct assessment of the patient perspective is necessary to thoroughly understand patients' experiences of disease. We aimed to examine information from children with short stature on their perceived HrQoL within 5 European countries. METHODS: Patients, identified through clinical databases, were approached by their clinicians according to the inclusion criteria regarding a diagnosis of growth hormone deficiency or idiopathic short stature and age requirements...
July 4, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28661490/mutations-in-c-natriuretic-peptide-nppc-a-novel-cause-of-autosomal-dominant-short-stature
#13
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/28642734/the-short-stature-homeobox-containing-gene-shox-shox-is-required-for-the-regulation-of-cell-proliferation-and-bone-differentiation-in-zebrafish-embryo-and-human-mesenchymal-stem-cells
#14
Tomoaki Yokokura, Hiroyasu Kamei, Takashi Shibano, Daisuke Yamanaka, Rie Sawada-Yamaguchi, Fumihiko Hakuno, Shin-Ichiro Takahashi, Toshiaki Shimizu
The short-stature homeobox-containing gene (SHOX) was originally discovered as one of genes responsible for idiopathic short-stature syndromes in humans. Previous studies in animal models have shown the evolutionarily conserved link between this gene and skeletal formation in early embryogenesis. Here, we characterized developmental roles of shox/SHOX in zebrafish embryos and human mesenchymal stem cells (hMSCs) using loss-of-function approaches. Morpholino oligo-mediated knockdown of zebrafish shox markedly hindered cell proliferation in the anterior region of the pharyngula embryos, which was accompanied by reduction in the dlx2 expression at mesenchymal core sites for future pharyngeal bones...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28629824/comparison-of-shox-and-associated-elements-duplications-distribution-between-patients-l%C3%A4-ri-weill-dyschondrosteosis-idiopathic-short-stature-and-population-sample
#15
Katerina Hirschfeldova, Roman Solc
The effect of heterozygous duplications of SHOX and associated elements on Lėri-Weill dyschondrosteosis (LWD) and idiopathic short stature (ISS) development is less distinct when compared to reciprocal deletions. The aim of our study was to compare frequency and distribution of duplications within SHOX and associated elements between population sample and LWD (ISS) patients. A preliminary analysis conducted on Czech population sample of 250 individuals compared to our previously reported sample of 352 ISS/LWD Czech patients indicated that rather than the difference in frequency of duplications it is the difference in their distribution...
September 5, 2017: Gene
https://www.readbyqxmd.com/read/28575299/mortality-in-children-receiving-growth-hormone-treatment-of-growth-disorders-data-from-the-genetics-and-neuroendocrinology-of-short-stature-international-study
#16
COMPARATIVE STUDY
Charmian A Quigley, Christopher J Child, Alan G Zimmermann, Ron G Rosenfeld, Leslie L Robison, Werner F Blum
Context: Although pediatric growth hormone (GH) treatment is generally considered safe for approved indications, concerns have been raised regarding potential for increased risk of mortality in adults treated with GH during childhood. Objective: To assess mortality in children receiving GH. Design: Prospective, multinational, observational study. Setting: Eight hundred twenty-seven study sites in 30 countries. Patients: Children with growth disorders...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28557176/genetic-variations-at-the-human-growth-hormone-receptor-ghr-gene-locus-are-associated-with-idiopathic-short-stature
#17
Christel Dias, Mara Giordano, Rosalie Frechette, Simonetta Bellone, Constantin Polychronakos, Laurent Legault, Cheri L Deal, Cynthia Gates Goodyer
GH plays an essential role in the growing child by binding to the growth hormone receptor (GHR) on target cells and regulating multiple growth promoting and metabolic effects. Mutations in the GHR gene coding regions result in GH insensitivity (dwarfism) due to a dysfunctional receptor protein. However, children with idiopathic short stature (ISS) show growth impairment without GH or GHR defects. We hypothesized that decreased expression of the GHR gene may be involved. To test this, we investigated whether common genetic variants (microsatellites, SNPs) in regulatory regions of the GHR gene region were associated with the ISS phenotype...
May 29, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28525404/growth-hormone-treatment-for-growth-hormone-deficiency-and-idiopathic-short-stature-new-guidelines-shaped-by-the-presence-and-absence-of-evidence
#18
Adda Grimberg, David B Allen
PURPOSE OF REVIEW: The Pediatric Endocrine Society recently published new guidelines for the use of human growth hormone (hGH) and human insulin-like growth factor-I (hIGF-I) treatment for growth hormone deficiency, idiopathic short stature, and primary IGF-I deficiency in children and adolescents. This review places the new guidelines in historical contexts of the life cycle of hGH and the evolution of US health care, and highlights their future implications. RECENT FINDINGS: The new hGH guidelines, the first to be created by the Grading of Recommendations Assessment, Development and Evaluation approach, are more conservative than their predecessors...
August 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28523647/computational-investigation-of-growth-hormone-receptor-trp169arg-heterozygous-mutation-in-a-child-with-short-stature
#19
William Farias Porto, Felipe Albuquerque Marques, Huri Brito Pogue, Maria Teresinha de Oliveira Cardoso, Maria Gabriela Rodrigues do Vale, Állan da Silva Pires, Octavio Luiz Franco, Sérgio Amorim de Alencar, Robert Pogue
Mutations in the growth hormone receptor (GHR) gene can cause disruption of the growth hormone signaling pathway, resulting in growth deficiency due to growth hormone (GH) resistance. Both recessive and apparently dominant mutations have been described in the literature. In order to shed some light on the molecular mechanism of partial growth hormone resistance caused by heterozygous mutations we performed an in-depth in silico analysis of a mutation found in a girl with a previous diagnosis of idiopathic short stature...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28457480/how-should-we-investigate-children-with-growth-failure
#20
Juliane Léger
The early diagnosis of short stature is essential for effective management and treatment. Investigations for children with growth failure are required to distinguish between idiopathic short stature due to physiological variants (familial short stature, and constitutional delays of growth and puberty, or both), primary causes of short stature, such as syndromic and/or genetic defects and skeletal dysplasia, and secondary growth deficits due to endocrine or other chronic disorders such as celiac disease, Crohn's disease, malnutrition, renal, anorexia nervosa or other chronic diseases...
April 27, 2017: Annales D'endocrinologie
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