The mutational demography of protein C deficiency.

abstract：:A case of human piebaldism with white forelock is presented, with emphasis on the unusual aspect of expansion and diminution of the hypomelanotic areas. Possible mechanisms of piebaldism and of changes in the hypomelanotic areas are discussed. ...

journal_title：Human genetics

authors： Davis BK,Verdol LD

更新日期：1976-10-28 00:00:00

abstract：:A simple and rapid technique is described whereby the nucleolus organizer regions (NORs) of human chromosomes can be differentially stained with silver. This staining is followed by trypsin-Giemsa banding on the same metaphase chromosomes. The metaphases simultaneously exhibit silver-stained NORs and G bands, allowing...

journal_title：Human genetics

authors： Howell WM,Black DA

更新日期：1978-07-12 00:00:00

abstract：:The Prader-Willi syndrome (PWS) is a developmental disorder caused by a deficiency of paternal contributions, arising from differently sized deletions, uniparental disomy or rare imprinting mutations, in the chromosome region 15q11-q13. We studied 41 patients with suspected PWS and their parents using cytogenetic and ...

journal_title：Human genetics

authors： Kokkonen H,Kähkönen M,Leisti J

更新日期：1995-05-01 00:00:00

abstract：:Restriction endonucleases have been recently proved to be active on fixed chromosomes, thus they are useful in chromatin structure studies. Within this class of enzymes, Alu I is able to detect the presence and localization of highly repetitive DNA sequences in human and in other mammalian and dipteran species. In thi...

journal_title：Human genetics

authors： De Stefano GF,Romano E,Ferrucci L

更新日期：1986-03-01 00:00:00

abstract：:Pairs of cultured amniotic cells and maternal fibroblasts ("feto-maternal pairs") were studied for hexosaminidase A (HXA) and arylsulfatase A (ASA) activity. These lysosomal enzyme activities are genetically deficient in Tay-Sachs disease and metachromatic leukodystrophy, respectively. After HXA was standardized by re...

journal_title：Human genetics

authors： Harzer K,Hayashi K

更新日期：1981-01-01 00:00:00

abstract：:The severe neonatal centronuclear/myotubular myopathy (XLMTM) is an X-linked disorder characterized by generalized muscle weakness, hypotonia and serious respiratory insufficiency. The gene for this disease has been assigned to the long arm of chromosome X in the Xq28 band. Ca2+ ATPase isoform-3 (ATP2B3) has also been...

journal_title：Human genetics

authors： Smolenicka Z,Guerini D,Carafoli E,Kress W,Liechti-Gallati S

更新日期：1996-12-01 00:00:00

abstract：:This paper presents the clinical and cytogenetic findings in a female patient with secondary amenorrhea and normal phenotype. Some difficulties related to karyotype-phenotype correlation are discussed. ...

journal_title：Human genetics

authors： Branković S,Laća Z,Dramusić V,Ivanović M,Morić-Petrović S

更新日期：1979-04-17 00:00:00

abstract：:In general, osteogenesis imperfecta (brittle bone disease) is caused by heterozygous mutations in the genes encoding the alpha 1 or alpha 2 chains of type I collagen (COL1A1 and COL1A2, respectively). In this study we screened these genes in a proband presenting with the severe form (type III) of osteogenesis imperfec...

journal_title：Human genetics

authors： Rose NJ,Mackay K,Byers PH,Dalgleish R

更新日期：1995-02-01 00:00:00

abstract：:A family with five induced and seven spontaneous abortions and no live births is described. Four of the seven spontaneous abortuses were available for cytogenetic examination and three were successfully karyotyped. Their karyotypes were 46,XX; 46,XX/46,XX,t(2;2)(2p2p;2q2q); and 46,XY. The karyotypes of the parents wer...

journal_title：Human genetics

authors： Ohama K,Kusumi I,Takahara H,Kajii T

更新日期：1978-01-19 00:00:00

abstract：:Complex diseases are far more common than diseases that follow simple Mendelian patterns of inheritance. Difficulties are experienced in the designing of experiments to dissect out the contribution of a single allele to a complex phenotype. We review the literature regarding a point mutation in methylenetetrahydrofola...

journal_title：Human genetics

authors： Fletcher O,Kessling AM

更新日期：1998-07-01 00:00:00

abstract：:This report concerns two new mutations in the sterol 27-hydroxylase gene in two patients with cerebrotendinous xanthomatosis (CTX). In a Surinam-Creole patient (patient A), a G deletion on position cDNA 546/547 in exon 3 led to a frameshift and the introduction of a premature termination codon. In a Dutch patient (pat...

journal_title：Human genetics

authors： Verrips A,Steenbergen-Spanjers GC,Luyten JA,van den Heuvel LP,Keyser A,Gabreëls FJ,Wevers RA

更新日期：1996-12-01 00:00:00

abstract：:Eleven families segregating for the X-linked recessive immune deficiency disorder, Wiskott-Aldrich syndrome (WAS), were studied by linkage analysis with an alpha satellite DNA probe, pBamX-7, which detects polymorphisms at the X chromosome centromere, locus DXZ1, as well as three other polymorphic markers defining loc...

journal_title：Human genetics

authors： Greer WL,Mahtani MM,Kwong PC,Rubin LA,Peacocke M,Willard HF,Siminovitch KA

更新日期：1989-10-01 00:00:00

abstract：:A Taq1 polymorphism, located in intron 4 of the faciogenital dysplasia (FGD1) gene, the gene responsible for Aarskog syndrome, is described. FGD1 encodes a putative Rho/Rac guanine nucleotide exchange factor involved in mammalian morphogenesis. The identification of an intragenic polymorphism will facilitate the accur...

journal_title：Human genetics

authors： Pasteris NG,Gorski JL

更新日期：1995-10-01 00:00:00

abstract：:In a large kindred with X-linked Menkes disease, linkage studies were performed with a restriction fragment length polymorphism (RFLP) that had been found with a cloned hybridisation probe from the proximal short arm of the X chromosome. This RFLP was considered as a potential genetic marker since the Menkes gene seem...

journal_title：Human genetics

authors： Wieacker P,Horn N,Pearson P,Wienker TF,McKay E,Ropers HH

更新日期：1983-01-01 00:00:00

abstract：:In certain segments of human DNA, the methylation of deoxycytidine residues has been found to be highly specific and interindividually conserved. Imprinted DNA sequences in diploid primary cells show allele-specific differences in DNA methylation, usually with the active chromosomal regions being unmethylated and the ...

journal_title：Human genetics

authors： Kochanek S,Renz D,Doerfler W

更新日期：1994-08-01 00:00:00

abstract：:Investigation of lymphocyte cultures from three females heterozygous for fra(X)(q27) shows widely differing proportions of early and late replicating X chromosomes having the fragile site, and suggests that the replication status of the fragile X may be related to the mental capacity of the patient. The study has util...

journal_title：Human genetics

authors： Howell RT,McDermott A

更新日期：1982-01-01 00:00:00

abstract：:In order to investigate the molecular basis of phenylketonuria (PKU) in Spain, we analyzed the restriction fragment length polymorphism (RFLP) haplotypes and common mutations in the phenylalanine hydroxylase (PAH) gene in 32 unrelated Spanish PKU families. The distribution of RFLP haplotypes differs from that of north...

journal_title：Human genetics

authors： Desviat LR,Pérez B,Ugarte M

更新日期：1993-10-01 00:00:00

abstract：:Spinal muscular atrophy (SMA) is one of the most common autosomal recessive diseases, affecting approximately 1 in 10,000 live births, and with a carrier frequency of approximately 1 in 50. Because of gene deletion or conversion, SMN1 exon 7 is homozygously absent in approximately 94% of patients with clinically typic...

journal_title：Human genetics

authors： Ogino S,Wilson RB

更新日期：2002-12-01 00:00:00

abstract：:Referring to the mutational theory of carcinogenesis in embryonal tumors, it is commonly accepted that patients with multifocal tumors are hereditary cases. This is based on the implicit assumption that each tumor results from a single mutational event occurring in a cell that has already inherited a mutation, and tha...

journal_title：Human genetics

authors： Bonaïti-Pellié C,Chompret A,Tournade MF,Lemerle J,Voute PA,Delemarre JF

更新日期：1993-05-01 00:00:00

abstract：:The nucleolus organizer regions (NORs) of variant D- and G-group chromosomes characterized by enlargements of the short arms including secondary constrictions and satellites, were examined using the silver-staining method. Of a total of nine variants examined, four were found to have double Ag-stained NORs in the enla...

journal_title：Human genetics

authors： Sofuni T,Tanabe K,Awa AA

更新日期：1980-01-01 00:00:00

abstract：:A method based on a combination of cell culture and pharmacokinetic data is explored as a way of estimating the possible genetic risk to man from a mutagenic chemical. 8-methoxypsoralen, which is given to psoriasis patients as part of a photochemotherapy regime, is used, since it represents a 'real-life' situation and...

journal_title：Human genetics

authors： Bridges BA

更新日期：1979-05-23 00:00:00

abstract：:The recent discovery that the extra chromosome in about 30% of cases of 47, trisomy 21 is of paternal origin has revived interest in the possibility of paternal age as a risk factor for a Down syndrome birth, independent of maternal age. Parental age distribution for 611 Down's syndrome 47, +21 cases was studied. The ...

journal_title：Human genetics

authors： Roth MP,Feingold J,Baumgarten A,Bigel P,Stoll C

更新日期：1983-01-01 00:00:00

abstract：:Congenital hypothyroidism affects 1/3000-4000 newborns and it has been estimated that 10-20% are familial cases with an autosomal recessive mode of inheritance. Previous studies of mostly individual cases have led to the identification of mutations in a number of genes, indicating that it is a genetically heterogeneou...

journal_title：Human genetics

authors： Ahlbom BE,Yaqoob M,Gustavsson P,Abbas HG,Annerén G,Larsson A,Wadelius C

更新日期：2002-02-01 00:00:00

abstract：:Li-Fraumeni syndrome (LFS) is characterized by a high risk of sarcomas, early onset of breast cancer, and a diversity of other cancers occurring as multiple primary tumors in multiple family members. In many families with LFS, germline mutations within the tumor-suppressor gene p53 have been identified. However, mutat...

journal_title：Human genetics

authors： Evans SC,Mims B,McMasters KM,Foster CJ,deAndrade M,Amos CI,Strong LC,Lozano G

更新日期：1998-06-01 00:00:00

abstract：:Seven patients are described who have some or all of the symptoms of Prader-Willi syndrome. They were ascertained by varying criteria starting either from the clinical picture or from the identification of a chromosome abnormality involving the proximal portion of the long arm of chromosome 15. The chromosome abnormal...

journal_title：Human genetics

authors： Fraccaro M,Zuffardi O,Bühler E,Schinzel A,Simoni G,Witkowski R,Bonifaci E,Caufin D,Cignacco G,Delendi N

更新日期：1983-01-01 00:00:00

abstract：:We investigated whether the amount of circulating cell-free fetal DNA in maternal serum is influenced by fetal karyotype, using real-time quantitative polymerase chain reaction assay. Serum samples were obtained from pregnant women at gestational ages ranging from 15 to 17 weeks, prior to their undergoing amniocentesi...

journal_title：Human genetics

authors： Ohashi Y,Miharu N,Honda H,Samura O,Ohama K

更新日期：2001-02-01 00:00:00

abstract：:The gene locus for hereditary retinoblastoma is on human chromosome 13, band q14. With this gene localization in mind, we cloned DNA fragments from this chromosome. Three of the fragments identify restriction fragment length polymorphisms. These three fragments are from the region 13q12-13q22, the chromosome region wh...

journal_title：Human genetics

authors： Dryja TP,Rapaport JM,Weichselbaum R,Bruns GA

更新日期：1984-01-01 00:00:00

abstract：:The functional intronless gene coding for a calmodulin-like protein (CLP) has been localized to human chromosome 10p13-ter. Chromosomal assignment was performed by Southern blot analysis of DNA from human-rodent somatic cell hybrids and amplification of a CLP gene-specific 1090-bp DNA fragment by the polymerase chain ...

journal_title：Human genetics

authors： Berchtold MW,Koller M,Egli R,Rhyner JA,Hameister H,Strehler EE

更新日期：1993-01-01 00:00:00

abstract：:The development of next-generation sequencing technologies has opened-up some new possibilities to explore the contribution of genetic variants to human diseases and in particular that of rare variants. Statistical methods have been developed to test for association with rare variants that require the definition of te...

journal_title：Human genetics

authors： Bocher O,Génin E

更新日期：2020-11-01 00:00:00

abstract：:The size and position of the heterochromatic regions of chromosome 9 were examined in a group of women with histories of recurrent miscarriage and a control group of fertile women. Measurements were made on whole chromosomes (variability between chromosomes was taken to reflect differences in heterochromatin), and cor...

journal_title：Human genetics

authors： Ford JH,Callen DF,Jahnke AB,Roberts CG

更新日期：1982-01-01 00:00:00