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排序方式: 共有311条查询结果,搜索用时 46 毫秒
1.
J J Candelier P Couillin P Eydoux A Boué 《Comptes rendus de l'Académie des sciences. Série III, Sciences de la vie》1986,302(8):303-308
The production of monoclonal antibodies against human embryonic renal cells allowed to display on the adult human kidney some antigens typical of certain structures or tissues: the proximal convoluted tubule for EG 9-11 and EG 19-6 monoclonal antibodies, the glomerular basement membrane for EG 14-1, the urothelium for EE 24-6, the connective tissue for EK 8-1 and EK 17-1 and probably the capsular and tubular basement membranes for EK 8-1. Simultaneously, we could follow the spatial and temporal repartition of the antigens during the renal development. One of them (EI 16-1) seemed to disappear in the adult and might correspond to a foetal type-antigen. 相似文献
2.
C Junien J Boué C Duros M Coulon P Cohen I Dehaupas P Gallano B Léotard H Nicolas A Boué 《Annales de génétique》1987,30(1):5-16
Carrier diagnosis and prenatal diagnosis of Duchenne's muscular dystrophy (DMD) and Becker's muscular dystrophy (BMD) has become possible using some twenty RFLPs detected by more than a dozen Xp21 probes that are either intragenic or flanking the disease locus. Results from familial studies on 88 DMD and BM families stress important considerations concerning a priori and final risks, individuals necessary for the identification of the phase, and the different strategies that can be applied, regardless of whether the study concerns an on-going pregnancy or a carrier-status determination, and whether the patient is at high or low risk. Finally, multiple sources of difficulties in interpreting the results depend on a) the occurrence of new mutations that must be traced; b) the existence of meiotic recombination; c) the necessity, in some instances, of relying upon the sole identification of the paternal X. These considerations emphasize the characteristics and the important limitations of this type of methodology. 相似文献
3.
CD22 and CD21 are glycoproteins primarily expressed on normal and neoplastic human B cells. The surface expression of these two molecules parallel each other during normal B cell differentiation, and the reported relative mobilities for CD22 and CD21 are 130/140 kDa and 140 kDa, respectively. Herein we present a detailed analysis of the biosynthesis and structure of CD22 and also compare it directly to CD21. Electrophoresis under reducing and nonreducing conditions suggested that CD22 and CD21 may have similarities in intra-chain disulfide bond formation. Biosynthesis and processing of CD22 and CD21 were very similar with respect to kinetics and post-translational modification, and both could be phosphorylated. However, endoglycosidase digestion (using N-glycanase and endoglycosidase H) and peptide mapping (using V8 protease and N-chlorosuccinimide) strongly suggested that CD22 and CD21 are distinct gene products. 相似文献
4.
Clastogen-induced chromosomal breakage as a marker for first trimester prenatal diagnosis of Fanconi anemia 总被引:5,自引:0,他引:5
Arleen D. Auerbach Zhang Min Rita Ghosh Eugene Pergament Yuri Verlinsky Henriette Nicolas Joëlle Boué 《Human genetics》1986,73(1):86-88
Summary Using cultured trophoblast cells obtained by chorionic villus biopsy, we diagnosed Fanconi anemia (FA) in two pregnancies and excluded it in eight pregnancies at risk for the syndrome. Baseline chromosomal breakage and breakage induced by diepoxybutane (DEB) were analyzed. Increased breakage was used as a marker for the syndrome. Our results were unambiguous and provide a reliable method for prenatal detection of FA in the first trimester of pregnancy. 相似文献
5.
Lambda Ig constant region genes are translocated to chromosome 8 in Burkitt''s lymphoma with t(8;22) 总被引:11,自引:4,他引:7 下载免费PDF全文
A de la Chapelle G Lenoir J Boué A Boué P Gallano C Huerre M F Szajnert M Jeanpierre J M Lalouel J C Kaplan 《Nucleic acids research》1983,11(4):1133-1142
By in situ hybridization of normal human chromosomes with a cloned genomic probe specific for the constant region of the lambda immunoglobulin genes, band 22q11 was preferentially labelled. In two cell lines with t(8;22) derived from Burkitt's lymphoma a strong signal was noted on the 8q+ chromosome derivative, indicating that the constant region of the lambda Ig gene cluster was translocated from chromosome 22 to chromosome 8. In addition, the signal observed on the 22q- derivative chromosome was stronger than the background in one of the two cell lines tested, but not in the other. The implications are that the break point in chromosome 22 in some cases lies within the Ig gene itself or between clusters of such genes, and that different cases have different break points. 相似文献
6.
Prenatal diagnosis of Niemann-Pick type C disease: current strategy from an experience of 37 pregnancies at risk. 下载免费PDF全文
M T Vanier C Rodriguez-Lafrasse R Rousson G Mandon J Boué A Choiset M F Peyrat C Dumontel M C Juge P G Pentchev 《American journal of human genetics》1992,51(1):111-122
Thirty-seven pregnancies at risk for Niemann-Pick type C disease were monitored by study of cultured amniotic fluid cells (8 cases) or chorionic villus cells (29 cases) in 23 couples over the period 1984-91. An early protocol combined determination of sphingomyelinase activity with electron microscopy. The current strategy, based on the demonstration of specific abnormalities in intracellular processing of exogenous cholesterol, combines the study of the early phase (first 6 h) of LDL-induced cholesteryl ester formation and the histochemical evaluation (filipin staining after 24 h of LDL uptake) of the LDL-induced accumulation of unesterified cholesterol. Thirteen fetuses were predicted to be affected. Confirmation of the diagnosis was made by study of cholesterol processing in fetal skin fibroblast cultures and/or by demonstration of a characteristic lipid storage in fetal liver, already present at 14 w gestation. Definition of the biochemical phenotype (classical, variant, or intermediate) of the index case, with regard to cholesterol-processing abnormalities, is an absolute prerequisite to adequate genetic counseling in a given family. Prenatal diagnosis has now proved a safe procedure in the predominant (approximately 85%) group of families with the classical phenotype. 相似文献
7.
C. Julier D. Weil P. Couillin J. C. Côté Cong Van Nguyen C. Foubert A. Boué J. P. Thirion J. C. Kaplan C. Junien 《Human genetics》1984,67(2):174-177
Summary We used a cloned human cDNA probe homologous to the placenta chorionic gonadotropin subunit (CGB) and to the pituitary luteinizing hormone subunit (LHB) and Southern blotting techniques to analyse DNA from a series of rodent x human somatic cell hybrids for the presence of specific gonadotropin subunit related sequences. Our results provide evidence for the assignment and linkage of the eight genes (or pseudogenes) coding for the subunit of these glycoprotein hormones to chromosome 19. Moreover, we observed a strict concordance between the permissivity of mouse x man hybrid cells to enteroviruses (which is linked to the presence of specific cell receptors encoded by human chromosome 19) and the presence of CGB and LHB related sequences, thus confirming the localization of the structural genes for the subunits on chromosome 19.This work was supported in part by INSERM grants CRL 81 1041 and by MRC grant MT 4860 相似文献
8.
Summary HLA-A and HLA-B markers have been determined in fibroblasts grown from tissues of triploid conceptuses and have been tested in the parents. Informative data on the origin of triploidy were obtained in eight cases: diandry I or dispermy in 4 cases, diandry II or dispermy in 2, digyny I or II in 2. This confirms that triploidy involved more frequently two sets of paternal chromosomes. 相似文献
9.
Distribution of deletions and seven point mutations on CYP21B genes in three clinical forms of steroid 21-hydroxylase deficiency 总被引:12,自引:1,他引:11 下载免费PDF全文
E Mornet P Crété F Kuttenn M C Raux-Demay J Boué P C White A Boué 《American journal of human genetics》1991,48(1):79-88
To characterize mutations in the CYP21B gene that are responsible for congenital adrenal hyperplasia (CAH), DNA samples from 91 French patients have been studied by allelic-specific oligonucleotide hybridization and Southern blot analysis. Seven sites mostly found in the CYP21A pseudogene and deletions of the functional CYP21B gene have been screened. Gene conversions involving small DNA segments accounted for 57% of the tested mutations and probably cause 74% of the mutations responsible for the disease. Complete deletion of the CYP21B gene accounted for 18% of the CAH mutations in the whole sample and for 21% in the classical form of the disease. Three mutations were found associated with specific clinical forms of the disease: a G-C substitution in the seventh exon was associated with the late-onset form of the disease, and both an 8-bp depletion in the third exon and complete deletion of CYP21B were associated with the salt-wasting form. 相似文献
10.