Abstract:
:Mitochondrial neurogastrointestinal encephalomyopathy (MNGIE) syndrome is a rare, multisystem disorder characterized clinically by ptosis, progressive external ophthalmoplegia, gastrointestinal dysmotility, leukoencephalopathy, thin body habitus, and myopathy. Laboratory studies reveal defects of oxidative-phosphorylation and multiple mtDNA deletions frequently in skeletal muscle. We studied four ethnically distinct families affected with this apparently autosomal recessive disorder. Probands from each family were shown, by Southern blot, to have multiple mtDNA deletions in skeletal muscle. We mapped the MNGIE locus to 22q13.32-qter, distal to D22S1161, with a maximum two-point LOD score of 6.80 at locus D22S526. Cosegregation of MNGIE with a single chromosomal region in families with diverse ethnic backgrounds suggests that we have mapped an important locus for this disorder. We found no evidence to implicate three candidate genes in this region, by using direct sequence analysis for DNA helicase II and by assaying enzyme activities for arylsulfatase A and carnitine palmitoyltransferase.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Hirano M,Garcia-de-Yebenes J,Jones AC,Nishino I,DiMauro S,Carlo JR,Bender AN,Hahn AF,Salberg LM,Weeks DE,Nygaard TGdoi
10.1086/301979subject
Has Abstractpub_date
1998-08-01 00:00:00pages
526-33issue
2eissn
0002-9297issn
1537-6605pii
S0002-9297(07)61496-7journal_volume
63pub_type
杂志文章abstract::Myotubular myopathy is a severe congenital disease inherited as an X-linked trait (MTM1; McKusick 31040). It has been mapped to the long arm of chromosome X, to the Xq27-28 region. Significant linkage has subsequently been established for the linkage group comprised of DXS304, DXS15, DXS52, and F8C in several studies....
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
abstract::Perrault syndrome is a genetically and clinically heterogeneous autosomal-recessive condition characterized by sensorineural hearing loss and ovarian failure. By a combination of linkage analysis, homozygosity mapping, and exome sequencing in three families, we identified mutations in CLPP as the likely cause of this ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2013.02.013
更新日期:2013-04-04 00:00:00
abstract::Model-free LOD-score methods are often employed to detect linkage between marker loci and common diseases, with samples of affected sib pairs. Although extensions of the basic one-disease-locus model have been proposed that allow separate inclusion of other types of affected relative pairs, discordant relative pairs, ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302662
更新日期:1999-12-01 00:00:00
abstract::Genome-wide association studies (GWASs) have been successful in detecting variants correlated with phenotypes of clinical interest. However, the power to detect these variants depends on the number of individuals whose phenotypes are collected, and for phenotypes that are difficult to collect, the sample size might be...
journal_title:American journal of human genetics
pub_type: 杂志文章,meta分析
doi:10.1016/j.ajhg.2016.04.013
更新日期:2016-07-07 00:00:00
abstract::Knowledge of haplotype phase is valuable for many analysis methods in the study of disease, population, and evolutionary genetics. Considerable research effort has been devoted to the development of statistical and computational methods that infer haplotype phase from genotype data. Although a substantial number of su...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/500808
更新日期:2006-03-01 00:00:00
abstract::A single base mutation at nucleotide position 3460 (nt 3460) in the ND1 gene in human mtDNA was found to be associated with Leber hereditary optic neuroretinopathy (LHON). The G-to-A mutation converts an alanine to a threonine at the 52d codon of the gene. The mutation also abolishes an AhaII restriction site and thus...
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::Elsewhere we have reported an efficient method for isolating VNTR (Variable Number of Tandem Repeats) markers. Several of the VNTR markers isolated in those experiments were sequenced, and a DNA sequence of 9 bp (GNNGTGGG) emerged as an apparent consensus sequence for VNTR markers. To confirm this result and to develo...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract::Human neuroblastoma cells often are monosomic for the distal portion of 1p (1p36). We report that the deleted 1p material in cells of neuroblastoma lines is preferentially replaced by material from chromosome 17, resulting from an unbalanced 1;17 translocation. Chromosome 17 often acquires instability, followed by the...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1994-08-01 00:00:00
abstract::The still debated question of whether the expression of mental retardation in heterozygous carriers of the Martin-Bell syndrome is influenced by X inactivation has been investigated in a group of phase-known double heterozygotes for the FRA-X mutant and the G6PD Mediterranean variant. In these individuals, the number ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1990-04-01 00:00:00
abstract::To assess the association between recombination and nondisjunction of chromosome 21, we analyzed cytogenetic and DNA markers in 104 trisomy 21 individuals and their parents. Our DNA marker studies of parental origin were informative in 100 cases, with the overwhelming majority (94) being maternal in origin. This value...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::We report here the genetic cause of the X-linked syndrome of psychosis, pyramidal signs, and macro-orchidism (PPM-X) in a three-generation family manifesting the disorder as a mutation in the methyl-CpG binding-protein 2 (MECP2) gene in Xq28. The A140V mutation was found in all affected males and all carrier females i...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/339553
更新日期:2002-04-01 00:00:00
abstract::Prior to the implementation of predictive-testing programs for Huntington disease (HD), significant concern was raised concerning the likelihood of catastrophic events (CEs), particularly in those persons receiving an increased-risk result. We have investigated the frequency of CEs-that is, suicide, suicide attempt, a...
journal_title:American journal of human genetics
pub_type: 杂志文章,多中心研究
doi:10.1086/302374
更新日期:1999-05-01 00:00:00
abstract::The Asian-specific 9-bp deletion between the genes for mitochondrial cytochrome oxidase II and lysine transfer RNA has been used to trace aboriginal human movements out of Southeast Asia and into portions of the South Pacific. Although it has been used to estimate the number of independent lineages that occur in the N...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::A novel technique for detecting electrophoretic and quantitative variants of group-specific component (Gc) proteins is described. The technique, in vitro labeling with radioactive vitamin D followed by polyacrylamide gel electrophoresis and autoradiography (PAGE autoradiography), permits sensitive, high resolution det...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1977-11-01 00:00:00
abstract::Joubert syndrome (JBTS) is an autosomal-recessive disorder characterized by a distinctive mid-hindbrain malformation, developmental delay with hypotonia, ocular-motor apraxia, and breathing abnormalities. Although JBTS was first described more than 40 years ago in French Canadian siblings, the causal mutations have no...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2012.02.011
更新日期:2012-04-06 00:00:00
abstract::Meckel syndrome (MKS) is a rare autosomal recessive lethal condition of unknown origin, characterized by (i) an occipital meningo-encephalocele with (ii) enlarged kidneys, with multicystic dysplasia and fibrotic changes in the portal area of the liver and with ductal proliferation, and (iii) postaxial polydactyly. A g...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302062
更新日期:1998-10-01 00:00:00
abstract::The study of recent natural selection in human populations has important applications to human history and medicine. Positive natural selection drives the increase in beneficial alleles and plays a role in explaining diversity across human populations. By discovering traits subject to positive selection, we can better...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2011.07.025
更新日期:2011-09-09 00:00:00
abstract::The sibship disequilibrium test (SDT) is designed to detect both linkage in the presence of association and association in the presence of linkage (linkage disequilibrium). The test does not require parental data but requires discordant sibships with at least one affected and one unaffected sibling. The SDT has many d...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302137
更新日期:1998-12-01 00:00:00
abstract::Although intensive efforts have been undertaken to elucidate the genetic background of immunoglobulin A nephropathy (IgAN), genetic factors associated with the pathogenesis of this disease are still not well understood. We designed a case-control association study that was based on linkage disequilibrium among single-...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/339077
更新日期:2002-03-01 00:00:00
abstract::To test hypotheses about the origin of modern humans, we analyzed mtDNA sequences, 30 nuclear restriction-site polymorphisms (RSPs), and 30 tetranucleotide short tandem repeat (STR) polymorphisms in 243 Africans, Asians, and Europeans. An evolutionary tree based on mtDNA displays deep African branches, indicating grea...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1002/ajmg.1320570340
更新日期:1995-09-01 00:00:00
abstract::Usher syndrome type IIa is an autosomal recessive disorder characterized by mild-to-severe hearing loss and progressive visual loss due to retinitis pigmentosa. The mutation that most commonly causes Usher syndrome type IIa is a 1-bp deletion, described as "2299delG," in the USH2A gene. The mutation has been identifie...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/321269
更新日期:2001-07-01 00:00:00
abstract::The first hypervariable segment of the human mtDNA control region contains a homopolymeric tract of cytosines between nt 16184 and 16193, interrupted at position 16189 by a thymine, according to the Cambridge reference sequence. A variant commonly found in population screening is a T-to-C transition at nt 16189, resul...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1995-08-01 00:00:00
abstract::Polymorphisms of the vitamin D receptor gene (VDR) have been shown to be associated with several complex diseases, including osteoporosis, but the mechanisms are unknown and study results have been inconsistent. We therefore determined sequence variation across the major relevant parts of VDR, including construction o...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/497438
更新日期:2005-11-01 00:00:00
abstract::Eighty unrelated individuals with Duchenne muscular dystrophy (DMD) or Becker muscular dystrophy (BMD) were found to have deletions in the major deletion-rich region of the DMD locus. This region includes the last five exons detected by cDNA5b-7, all exons detected by cDNA8, and the first two exons detected by cDNA9. ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1989-10-01 00:00:00
abstract::Despite the accelerated discovery of genes associated with syndromic traits, the majority of families affected by such conditions remain undiagnosed. Here, we employed whole-exome sequencing in two unrelated consanguineous kindreds with central nervous system (CNS), cardiac, renal, and digit abnormalities. We identifi...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2017.02.007
更新日期:2017-04-06 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::Infantile neuroaxonal dystrophy (INAD) is an autosomal recessive progressive neurodegenerative disease that presents within the first 2 years of life and culminates in death by age 10 years. Affected individuals from two unrelated Bedouin Israeli kindreds were studied. Brain imaging demonstrated diffuse cerebellar atr...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/508572
更新日期:2006-11-01 00:00:00
abstract::The mtDNA variation of 50 Spanish and 4 Cuban families affected by nonsyndromic sensorineural deafness due to the A1555G mutation in the 12S rRNA gene was studied by high-resolution RFLP analysis and sequencing of the control region. Phylogenetic analyses of haplotypes and detailed survey of population controls reveal...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302642
更新日期:1999-11-01 00:00:00
abstract::It has been demonstrated in animal studies that, in animals heterozygous for pericentric chromosomal inversions, loop formation is greatly reduced during meiosis. This results in absence of recombination within the inverted segment, with recombination seen only outside the inversion. A recent study in yeast has shown ...
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::Two new morphs (F and G) detected by the centromeric alpha satellite probe p alpha 10RP8 and D10Z1 in HinfI digests are linked to the PstI polymorphisms of D10Z1, confirming their chromosome 10 location. The F and G morphs were in strong linkage disequilibrium with each other but were in weak linkage disequilibrium wi...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1990-12-01 00:00:00