Abstract:
:We report recessive mutations in the gene for the latent transforming growth factor-beta binding protein 4 (LTBP4) in four unrelated patients with a human syndrome disrupting pulmonary, gastrointestinal, urinary, musculoskeletal, craniofacial, and dermal development. All patients had severe respiratory distress, with cystic and atelectatic changes in the lungs complicated by tracheomalacia and diaphragmatic hernia. Three of the four patients died of respiratory failure. Cardiovascular lesions were mild, limited to pulmonary artery stenosis and patent foramen ovale. Gastrointestinal malformations included diverticulosis, enlargement, tortuosity, and stenosis at various levels of the intestinal tract. The urinary tract was affected by diverticulosis and hydronephrosis. Joint laxity and low muscle tone contributed to musculoskeletal problems compounded by postnatal growth delay. Craniofacial features included microretrognathia, flat midface, receding forehead, and wide fontanelles. All patients had cutis laxa. Four of the five identified LTBP4 mutations led to premature termination of translation and destabilization of the LTBP4 mRNA. Impaired synthesis and lack of deposition of LTBP4 into the extracellular matrix (ECM) caused increased transforming growth factor-beta (TGF-beta) activity in cultured fibroblasts and defective elastic fiber assembly in all tissues affected by the disease. These molecular defects were associated with blocked alveolarization and airway collapse in the lung. Our results show that coupling of TGF-beta signaling and ECM assembly is essential for proper development and is achieved in multiple human organ systems by multifunctional proteins such as LTBP4.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Urban Z,Hucthagowder V,Schürmann N,Todorovic V,Zilberberg L,Choi J,Sens C,Brown CW,Clark RD,Holland KE,Marble M,Sakai LY,Dabovic B,Rifkin DB,Davis ECdoi
10.1016/j.ajhg.2009.09.013subject
Has Abstractpub_date
2009-11-01 00:00:00pages
593-605issue
5eissn
0002-9297issn
1537-6605pii
S0002-9297(09)00409-1journal_volume
85pub_type
杂志文章abstract::In this report, we describe a simple correction for multiple testing of single-nucleotide polymorphisms (SNPs) in linkage disequilibrium (LD) with each other, on the basis of the spectral decomposition (SpD) of matrices of pairwise LD between SNPs. This method provides a useful alternative to more computationally inte...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/383251
更新日期:2004-04-01 00:00:00
abstract::To study the genetic determinism of multifactorial diseases in large panmictic populations, a strategy consists in looking for an association with markers closely linked to candidate genes. A distribution of marker genotypes different in patients and controls may indicate that the candidate gene is involved in the dis...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1996-04-01 00:00:00
abstract::Histochemical assay for ornithine transcarbamylase (OTC) activity in fixed frozen hepatic sections from a woman heterozygous for OTC deficiency revealed two populations of hepatocytes: those with normal activity and those with no activity. This observation, in conjunction with data from previous family studies, confir...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1976-07-01 00:00:00
abstract::Kohlschütter-Tönz syndrome (KTS) is an autosomal-recessive disease characterized by the combination of epilepsy, psychomotor regression, and amelogenesis imperfecta. The molecular basis has not yet been elucidated. Here, we report that KTS is caused by mutations in ROGDI. Using a combination of autozygosity mapping an...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2012.02.012
更新日期:2012-04-06 00:00:00
abstract::Nondisjunction in trisomy 21 has traditionally been studied by cytogenetic heteromorphisms. Those studies assumed no crossing-over on the short arm of chromosome 21. Recently, increased accuracy of detection of the origin of nondisjunction has been demonstrated by DNA polymorphism analysis. We describe a comparative s...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract::Recently the second gene for autosomal dominant polycystic kidney disease (ADPKD), located on chromosome 4q21-q22, has been cloned and characterized. The gene encodes an integral membrane protein, polycystin-2, that shows amino acid similarity to the PKD1 gene product and to the family of voltage-activated calcium (an...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/515497
更新日期:1997-09-01 00:00:00
abstract::The introduction of stochastic methods in pedigree analysis has enabled geneticists to tackle computations intractable by standard deterministic methods. Until now these stochastic techniques have worked by running a Markov chain on the set of genetic descent states of a pedigree. Each descent state specifies the path...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1996-06-01 00:00:00
abstract::Although Africa has played a central role in human evolutionary history, certain studies have suggested that not all contemporary human genetic diversity is of recent African origin. We investigated 35 simple polymorphic sites and one T(n) microsatellite in an 8-kb segment of the dystrophin gene. We found 86 haplotype...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/378777
更新日期:2003-11-01 00:00:00
abstract::To detect heterozygotes for maple-syrup-urine disease (MSUD), activities of branched-chain-alpha-ketoacid (BCKA) dehydrogenase and its components in skin fibroblasts of two obligatory heterozygotes and amnion cells of a fetus at risk were measured. Intact heterozygous cells were found to decarboxylate [1-14C] alpha-ke...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1982-05-01 00:00:00
abstract::Common variation in over 100 genes has been implicated in the risk of developing asthma, but the contribution of rare variants to asthma susceptibility remains largely unexplored. We selected nine genes that showed the strongest signatures of weak purifying selection from among 53 candidate asthma-associated genes, an...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2012.01.008
更新日期:2012-02-10 00:00:00
abstract::Independent replication of linkage in previously studied pedigrees is desirable when genetic heterogeneity is suspected or when the illness is very rare. When the likelihood of the new data in this type of replication study is computed as conditional on the previously reported linkage results, it can be considered ind...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1994-04-01 00:00:00
abstract::Antenatal Bartter syndrome is a variant of inherited renal-tubular disorders associated with hypokalemic alkalosis. This disorder typically presents as a life-threatening condition beginning in utero, with marked fetal polyuria that leads to polyhydramnios and premature delivery. Another hallmark of this variant is a ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/301872
更新日期:1998-06-01 00:00:00
abstract::Linkage analysis of phenylketonurics has shown a strong association between the DNA haplotype at the phenylalanine hydroxylase (PAH) locus and phenylketonuria (PKU). Similarly, a genetic linkage between less severe forms of hyperphenylalaninemia (HPA) and the PAH locus has been suggested. In the present study we analy...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1990-10-01 00:00:00
abstract::In the present study, we report a kindred with hearing loss, congenital heart defects, and posterior embryotoxon, segregating as autosomal dominant traits. Six of seven available affected patients manifested mild-to-severe combined hearing loss, predominantly affecting middle frequencies. Two patients were diagnosed w...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/341327
更新日期:2002-07-01 00:00:00
abstract::Natural selection is a significant force that shapes the architecture of the human genome and introduces diversity across global populations. The question of whether advantageous mutations have arisen in the human genome as a result of single or multiple mutation events remains unanswered except for the fact that ther...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2013.04.021
更新日期:2013-06-06 00:00:00
abstract::The construction of an accurate family pedigree is a fundamental component of a clinical genetic evaluation and of human genetic research. Previous surveys of genetic counselors and human genetic publications have demonstrated significant inconsistencies in the usage of common pedigree symbols representing situations ...
journal_title:American journal of human genetics
pub_type: 指南,杂志文章
doi:
更新日期:1995-03-01 00:00:00
abstract::The residual beta-D-galactosidase activity (10% of normal) present in an autopsy sample of liver derived from an I-cell patient has been characterized. The pH optima for both I-cell and normal acid 4-methylumbelliferyl beta-D-galactoside activities were 4.35. The adsorption and elution profiles of the I-cell enzyme fr...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1975-11-01 00:00:00
abstract::Phenotypes are rarely consistent across genetic backgrounds and environments, but instead vary in many ways depending on allelic variants, unlinked genes, epigenetic factors, and environmental exposures. In the extreme, individuals carrying the same causal DNA sequence variant but on different backgrounds can be class...
journal_title:American journal of human genetics
pub_type: 杂志文章,评审
doi:10.1016/j.ajhg.2017.06.004
更新日期:2017-08-03 00:00:00
abstract::Rupture of intracranial aneurysms (IAs) causes subarachnoid hemorrhage, a devastating condition with high morbidity and mortality. Angiographic and autopsy studies show that IA is a common disorder, with a prevalence of 3%-6%. Although IA has a substantial genetic component, little attention has been given to the gene...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/323614
更新日期:2001-10-01 00:00:00
abstract::DNA replication precisely duplicates the genome to ensure stable inheritance of genetic information. Impaired licensing of origins of replication during the G1 phase of the cell cycle has been implicated in Meier-Gorlin syndrome (MGS), a disorder defined by the triad of short stature, microtia, and a/hypoplastic patel...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2016.05.019
更新日期:2016-07-07 00:00:00
abstract::Ten cases of small ring chromosomes which did not stain with distamycinA/DAPI and did not possess satellite regions associated with nucleolus-organizing regions are described. In situ hybridization with a battery of biotinylated pericentric repeat probes specific either for individual chromosomes or for groups of chro...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract::The authors had previously mapped a new locus-DFNA17, for nonsyndromic hereditary hearing impairment-to chromosome 22q12.2-q13. 3. DFNA17 spans a 17- to 23-cM region, and MYH9, a nonmuscle-myosin heavy-chain gene, is located within the linked region. Because of the importance of myosins in hearing, MYH9 was tested as ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/S0002-9297(07)62942-5
更新日期:2000-11-01 00:00:00
abstract::Both sequence variation and copy-number variation (CNV) of the genes encoding receptors for immunoglobulin G (Fcγ receptors) have been genetically and functionally associated with a number of autoimmune diseases. However, the molecular nature and evolutionary context of this variation is unknown. Here, we describe the...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2012.04.018
更新日期:2012-06-08 00:00:00
abstract::Ciliopathies are clinical disorders of the primary cilium with widely recognized phenotypic and genetic heterogeneity. In two Arab consanguineous families, we mapped a ciliopathy phenotype that most closely matches Joubert syndrome (hypotonia, developmental delay, typical facies, oculomotor apraxia, polydactyly, and s...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2019.02.018
更新日期:2019-04-04 00:00:00
abstract::X-linked ichthyosis (XLI) is an inborn error of metabolism caused by steroid sulfatase (STS) deficiency. In more than 80% of XLI patients the enzyme deficiency is due to large deletions involving the entire STS gene and flanking sequences. However, some patients with the classical XLI phenotype and complete STS defici...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::The first component of the mitochondrial electron-transport chain is especially complex, consisting of 19 nuclear and seven mitochondrion-encoded subunits. Accordingly, a wide range of clinical manifestations are produced by the various mutations occurring in human populations. In this study, we analyze the subunit st...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract::A linkage analysis is reported for three branches of a single family segregating for autosomal dominant retinitis pigmentosa. A statistically significant lod score of 3.9 is obtained for the RP locus and AMY2 at a recombination frequency of 1%. This linkage indicates that the RP locus is on the no. 1 chromosome since ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1977-07-01 00:00:00
abstract::We have studied a nuclear family containing a single child with severe beta-thalassemia intermedia, a Greek-Cypriot mother with hematological findings of beta-thalassemia trait, and a Polish father who is hematologically normal. Since both the child and her father were heterozygous for a DNA polymorphism within the be...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1986-06-01 00:00:00
abstract::We have analyzed 247 Brazilian mtDNAs for hypervariable segment (HVS)-I and selected restriction fragment-length-polymorphism sites, to assess their ancestry in different continents. The total sample showed nearly equal amounts of Native American, African, and European matrilineal genetic contribution but with regiona...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/303004
更新日期:2000-08-01 00:00:00
abstract::Several dysmorphic syndromes affect the development of both the eye and the ear, but only a few are restricted to the eye and the external ear. We describe a developmental defect affecting the eye and the external ear in three members of a consanguineous family. This syndrome is characterized by ophthalmic anomalies (...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2008.03.007
更新日期:2008-05-01 00:00:00