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Cavallo A, Flori E, Mosca S, Maiellaro M, Bottillo G, Kovacs D, Cardinali G, Camera E. 217 Distinctive and shared signatures of Th1 and Th2 cytokines on the lipid pathways involved in the epidermal barrier function. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Ottaviani M, Flori E, Mastrofrancesco A, Briganti S, Lora V, Capitanio B, Zouboulis C, Picardo M. Sebocyte differentiation as a new target for acne therapy: an
in vivo
experience. J Eur Acad Dermatol Venereol 2020; 34:1803-1814. [DOI: 10.1111/jdv.16252] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/31/2019] [Indexed: 12/16/2022]
Affiliation(s)
- M. Ottaviani
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - E. Flori
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - A. Mastrofrancesco
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - S. Briganti
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
| | - V. Lora
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
- Pediatric Dermatology San Gallicano Dermatological Institute IRCCS Rome Italy
| | - B. Capitanio
- Pediatric Dermatology San Gallicano Dermatological Institute IRCCS Rome Italy
| | - C.C. Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology Dessau Medical Center Brandenburg Medical School Thedore Fontane Dessau Germany
| | - M. Picardo
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research San Gallicano Dermatological Institute IRCCS Rome Italy
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3
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Camera E, Ottaviani M, Flori E, Mastrofrancesco A, Briganti S, Marini F, Lora V, Picardo M. 389 Spectrum of actions of PPARγ modulation in acne sebum. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Ottaviani M, Flori E, Mastrofrancesco A, Briganti S, Lora V, Ludovici M, Camera E, Zouboulis C, Picardo M. 479 Sebocytes differentiation state affects their response to insulin stimulus. Possible implications in acne pathogenesis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Mastrofrancesco A, Ottaviani M, Cardinali G, Flori E, Briganti S, Ludovici M, Zouboulis C, Lora V, Camera E, Picardo M. Pharmacological PPARγ modulation regulates sebogenesis and inflammation in SZ95 human sebocytes. Biochem Pharmacol 2017; 138:96-106. [DOI: 10.1016/j.bcp.2017.04.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 04/26/2017] [Indexed: 01/10/2023]
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6
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Flori E, Mastrofrancesco A, Ottaviani M, Ludovici M, Zouboulis C, Picardo M, Camera E. 293 Different impacts of saturated and unsaturated free fatty acids on lipid synthesis and inflammatory response in sebocytes in culture. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Gruchy N, Vialard F, Blondeel E, Le Meur N, Joly-Hélas G, Chambon P, Till M, Herbaut-Graux M, Vigouroux-Castera A, Coussement A, Lespinasse J, Amblard F, Jimenez M, Lebel Roy Camille L, Carré-Pigeon F, Flori E, Mugneret F, Jaillard S, Yardin C, Harbuz R, Collonge Rame M, Vago P, Valduga M, Leporrier N. Pregnancy outcomes of prenatally diagnosed Turner syndrome: a French multicenter retrospective study including a series of 975 cases. Prenat Diagn 2014; 34:1133-8. [DOI: 10.1002/pd.4439] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/10/2014] [Accepted: 06/17/2014] [Indexed: 12/28/2022]
Affiliation(s)
- N. Gruchy
- Laboratoire de cytogénétique prénatale, Service de Génétique; CHU Côte de Nacre, UFR de Médecine Caen; Caen Cedex 9 France
| | - F. Vialard
- Laboratoire d'Histologie, Embryologie, Biologie de la Reproduction, Cytogénétique et Génétique médicale; CHI Poissy Saint Germain; Versailles France
| | - E. Blondeel
- Laboratoire d'Histologie, Embryologie, Biologie de la Reproduction, Cytogénétique et Génétique médicale; CHI Poissy Saint Germain; Versailles France
| | - N. Le Meur
- Etablissement Français du Sang Normandie; Bois-Guillaume Cedex France
| | - G. Joly-Hélas
- Laboratoire d'histologie, cytogénétique et biologie de la reproduction; Fédération de Génétique CHU de Rouen, Faculté de Médecine; Rouen France
| | - P. Chambon
- Laboratoire d'histologie, cytogénétique et biologie de la reproduction; Fédération de Génétique CHU de Rouen, Faculté de Médecine; Rouen France
| | - M. Till
- Service de cytogénétique, GHE; CBPE Hôpitaux de Lyon; Bron Cedex 2 France
| | | | | | - A. Coussement
- Groupe hospitalier Cochin Saint Vincent de Paul, APHP; Université Paris Descartes, Faculté de Médecine; Paris France
| | - J. Lespinasse
- Service de Génétique; Hôpital de Chambéry; Chambéry Cedex France
| | - F. Amblard
- Service de génétique chromosomique; CHU de Grenoble; Grenoble France
| | - M. Jimenez
- Service de Génétique UF Cytogénétique; CHRU de Tours; Tours Cedex 9 France
| | | | | | - E. Flori
- Service de Cytogénétique; Hôpital de Hautepierre; Strasbourg Cedex France
| | - F. Mugneret
- Laboratoire de cytogénétique; CHU de Dijon; Dijon France
| | - S. Jaillard
- Service de cytogénétique et biologie cellulaire; CHU Pontchaillou; Rennes Cedex 2 France
| | - C. Yardin
- Service d'Histologie, Cytologie et Cytogénétique; Hôpital de la Mère et de l'Enfant, CHU de Limoges; Limoges Cedex France
| | - R. Harbuz
- Laboratoire de Génétique Chromosomique, Service de Génétique; CHU de Poitiers; Poitiers France
| | - M. Collonge Rame
- Service de génétique biologique, histologie, biologie du développement et de la reproduction; CHRU Besançon, Hôpital Saint-Jacques; Besançon Cedex France
| | - P. Vago
- Cytogénétique Médicale; CHU Estaing Cytologie Histologie Embryologie Cytogénétique; Clermont-ferrand Cedex1 France
| | - M. Valduga
- Laboratoire de génétique médicale, Service de cytogénétique et génétique moléculaire; CHU de Nancy; Vandoeuvre-Les-Nancy France
| | - N. Leporrier
- Laboratoire de cytogénétique prénatale, Service de Génétique; CHU Côte de Nacre, UFR de Médecine Caen; Caen Cedex 9 France
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8
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Petit F, Escande F, Jourdain AS, Porchet N, Amiel J, Doray B, Delrue MA, Flori E, Kim CA, Marlin S, Robertson SP, Manouvrier-Hanu S, Holder-Espinasse M. Nager syndrome: confirmation of SF3B4 haploinsufficiency as the major cause. Clin Genet 2013; 86:246-51. [PMID: 24003905 DOI: 10.1111/cge.12259] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 07/16/2013] [Accepted: 08/19/2013] [Indexed: 11/28/2022]
Abstract
Nager syndrome belongs to the group of acrofacial dysostosis, which are characterized by the association of craniofacial and limb malformations. Recently, exome sequencing studies identified the SF3B4 gene as the cause of this condition in most patients. SF3B4 encodes a highly conserved protein implicated in mRNA splicing and bone morphogenic protein (BMP) signaling. We performed SF3B4 sequencing in 14 families (18 patients) whose features were suggestive of Nager syndrome and found nine mutations predicted to result in loss-of-function. SF3B4 is the major gene responsible for autosomal dominant Nager syndrome. All mutations reported predict null alleles, therefore precluding genotype-phenotype correlations. Most mutation-negative patients were phenotypically indistinguishable from patients with mutations, suggesting genetic heterogeneity.
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Affiliation(s)
- F Petit
- Service de Génétique Clinique, Hôpital Jeanne de Flandre, CHRU Lille, Lille, France; Laboratoire de Biologie Moléculaire, Centre de Biologie Pathologie, CHRU Lille, Lille, France; Université Lille Nord de France
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9
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Fradin M, Merklen-Djafri C, Perrigouard C, Aral B, Muller J, Stoetzel C, Frouin E, Flori E, Doray B, Dollfus H, Lipsker D. Long-term follow-up and molecular characterization of a patient with a RECQL4 mutation spectrum disorder. Dermatology 2013; 226:353-7. [PMID: 23899764 DOI: 10.1159/000351311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 03/25/2013] [Indexed: 11/19/2022] Open
Abstract
The follow-up of a man from birth to adulthood, presenting with features both of RAPADILINO and Rothmund-Thomson syndrome (RTS), is described. Molecular studies confirmed the presence of two different mutations, c.2767_2768delTT and c.3061C>T, in the RECQL4 gene. This gene is known to be causative of a spectrum including Baller-Gerold syndrome, RAPADILINO syndrome and RTS. New and rare features such as oral leukoplakia and very prominent hyperkeratotic verrucous papules on both soles are shown. This patient has to date no cancer history despite bearing a truncating mutation at the age of 21 years, which is also unusual.
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Affiliation(s)
- M Fradin
- Service de Génétique Médicale, CHU de Rennes; Rennes, France
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10
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Schaefer E, Lauer J, Durand M, Pelletier V, Obringer C, Claussmann A, Braun JJ, Redin C, Mathis C, Muller J, Schmidt-Mutter C, Flori E, Marion V, Stoetzel C, Dollfus H. Mesoaxial polydactyly is a major feature in Bardet-Biedl syndrome patients with LZTFL1 (BBS17) mutations. Clin Genet 2013; 85:476-81. [PMID: 23692385 DOI: 10.1111/cge.12198] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 05/16/2013] [Accepted: 05/16/2013] [Indexed: 10/26/2022]
Abstract
Ciliopathies are heterogeneous disorders sharing different clinical signs due to a defect at the level of the primary cilia/centrosome complex. Postaxial polydactyly is frequently reported in ciliopathies, especially in Bardet-Biedl syndrome (BBS). Clinical features and genetic results observed in a pair of dizygotic twins with BBS are reported. The following manifestations were present: retinitis pigmentosa, bilateral insertional polydactyly, cognitive impairment and renal dysfunction. X-rays of the hands confirmed the presence of a 4th mesoaxial extra-digit with Y-shaped metacarpal bones. The sequencing of LZTFL1 identified a missense mutation (NM_020347.2: p.Leu87Pro; c.260T>C) and a nonsense mutation (p.Glu260*; c.778G>T), establishing a compound heterozygous status for the twins. A major decrease of LZTFL1 transcript and protein was observed in the patient's fibroblasts. This is the second report of LZTFL1 mutations in BBS patients confirming LZTFL1 as a BBS gene. Interestingly, the only two families reported in literature thus far with LZTFL1 mutations have in common mesoaxial polydactyly, a very uncommon feature for BBS. This special subtype of polydactyly in BBS patients is easily identified on clinical examination and prompts for priority sequencing of LZTFL1 (BBS17).
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Affiliation(s)
- E Schaefer
- Laboratoire de Génétique Médicale, INSERM U1112, Faculté de Médecine de Strasbourg, Universitaires de Strasbourg, Strasbourg, France
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11
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Marle N, Martinet D, Aboura A, Joly-Helas G, Andrieux J, Flori E, Puechberty J, Vialard F, Sanlaville D, Fert Ferrer S, Bourrouillou G, Tabet AC, Quilichini B, Simon-Bouy B, Bazin A, Becker M, Stora H, Amblard S, Doco-Fenzy M, Molina Gomes D, Girard-Lemaire F, Cordier MP, Satre V, Schneider A, Lemeur N, Chambon P, Jacquemont S, Fellmann F, Vigouroux-Castera A, Molignier R, Delaye A, Pipiras E, Liquier A, Rousseau T, Mosca AL, Kremer V, Payet M, Rangon C, Mugneret F, Aho S, Faivre L, Callier P. Molecular characterization of 39 de novo sSMC: contribution to prognosis and genetic counselling, a prospective study. Clin Genet 2013; 85:233-44. [PMID: 23489061 DOI: 10.1111/cge.12138] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 03/05/2012] [Accepted: 03/05/2012] [Indexed: 11/27/2022]
Abstract
Small supernumerary marker chromosomes (sSMCs) are structurally abnormal chromosomes that cannot be characterized by karyotype. In many prenatal cases of de novo sSMC, the outcome of pregnancy is difficult to predict because the euchromatin content is unclear. This study aimed to determine the presence or absence of euchromatin material of 39 de novo prenatally ascertained sSMC by array-comparative genomic hybridization (array-CGH) or single nucleotide polymorphism (SNP) array. Cases were prospectively ascertained from the study of 65,000 prenatal samples [0.060%; 95% confidence interval (CI), 0.042-0.082]. Array-CGH showed that 22 markers were derived from non-acrocentric markers (56.4%) and 7 from acrocentic markers (18%). The 10 additional cases remained unidentified (25.6%), but 7 of 10 could be further identified using fluorescence in situ hybridization; 69% of de novo sSMC contained euchromatin material, 95.4% of which for non-acrocentric markers. Some sSMC containing euchromatin had a normal phenotype (31% for non-acrocentric and 75% for acrocentric markers). Statistical differences between normal and abnormal phenotypes were shown for the size of the euchromatin material (more or less than 1 Mb, p = 0.0006) and number of genes (more or less than 10, p = 0.0009). This study is the largest to date and shows the utility of array-CGH or SNP array in the detection and characterization of de novo sSMC in a prenatal context.
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Affiliation(s)
- N Marle
- Département de Génétique, Hôpital Le Bocage, Université de Bourgogne, Dijon, France
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12
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Doray B, Badila-Timbolschi D, Schaefer E, Fattori D, Monga B, Dott B, Favre R, Kohler M, Nisand I, Viville B, Kauffmann I, Bruant-Rodier C, Grollemund B, Rinkenbach R, Astruc D, Gasser B, Lindner V, Marcellin L, Flori E, Girard-Lemaire F, Dollfus H. Épidémiologie des fentes labio-palatines : expérience du Registre de malformations congénitales d’Alsace entre 1995 et 2006. Arch Pediatr 2012; 19:1021-9. [DOI: 10.1016/j.arcped.2012.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 05/25/2012] [Accepted: 07/04/2012] [Indexed: 11/15/2022]
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13
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Fradin M, Stoetzel C, Muller J, Koob M, Christmann D, Debry C, Kohler M, Isnard M, Astruc D, Desprez P, Zorres C, Flori E, Dollfus H, Doray B. Osteosclerotic bone dysplasia in siblings with a Fam20C mutation. Clin Genet 2010; 80:177-83. [PMID: 20825432 DOI: 10.1111/j.1399-0004.2010.01516.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Raine syndrome is an autosomal recessive disorder caused by mutations in the FAM20C gene. FAM20C codes for the human homolog of DMP4, a dentin matrix protein highly expressed in odontoblasts and moderately in bone. DMP4 is probably playing a role in the mineralization process. Since the first case reported in 1989 by Raine et al. 21 cases have been published delineating a phenotype which associates dysmorphic features, cerebral calcifications, choanal atresia or stenosis and thoracic/pulmonary hypoplasia. Kan and Kozlowski suggested the name of Raine syndrome to describe this new lethal osteosclerotic bone dysplasia. All the cases described were lethal during the neonatal period except for the last two reported patients aged 8 and 11 years who presented severe mental retardation. Here we describe two sisters, with an attenuated phenotype of Raine syndrome, who present an unexpectedly normal psychomotor development at ages 4 and 1, respectively. Identification of a homozygous mutation in the FAM20C gene confirmed the Raine syndrome diagnosis, thus contributing to the expansion of the Raine syndrome phenotype. This case report also prompted us to revisit the FAM20 gene classification and allowed us to highlight the ancestral status of Fam20C.
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Affiliation(s)
- Melanie Fradin
- Service de Génétique Médicale, CHU Strasbourg, Hôpital de Hautepierre, Avenue Molière, Strasbourg, France.
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14
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Bonnet C, Andrieux J, Beri-Dexheimer M, Leheup B, Boute O, Manouvrier S, Delobel B, Copin H, Receveur A, Mathieu M, Thiriez G, Le Caignec C, David A, de Blois MC, Malan V, Philippe A, Cormier-Daire V, Colleaux L, Flori E, Dollfus H, Pelletier V, Thauvin-Robinet C, Masurel-Paulet A, Faivre L, Tardieu M, Bahi-Buisson N, Callier P, Mugneret F, Edery P, Jonveaux P, Sanlaville D. Microdeletion at chromosome 4q21 defines a new emerging syndrome with marked growth restriction, mental retardation and absent or severely delayed speech. J Med Genet 2010; 47:377-84. [DOI: 10.1136/jmg.2009.071902] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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15
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Zampetti A, Mastrofrancesco A, Flori E, Maresca V, Picardo M, Amerio P, Feliciani C. Proinflammatory cytokine production in HaCaT cells treated by eosin: implications for the topical treatment of psoriasis. Int J Immunopathol Pharmacol 2010; 22:1067-75. [PMID: 20074471 DOI: 10.1177/039463200902200423] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Psoriasis is a multifactorial skin dermatosis characterized in its classical form by erythematous and hyperkeratotic plaques on extensor surfaces of the body, that in most cases can be managed therapeutically by topical agents. Hyperproliferation and a marked inflammation in both epidermis and dermis are thought to be driven by interaction of activated type-1 T lymphocytes and antigen-presenting cells and keratinocytes that release several proinflammatory and immunomodulating molecules. The aim of this study is to investigate whether tetrabromofluorecin, commonly know as eosin, a classical compound traditionally topically used in psoriasis for its presumed anti-inflammatory activities, is able to modulate the production of TNF-alpha, IL-6 and IL-8 that are recognized as the most active and characterized cytokines in the pathogenesis of this skin disorder. HaCaT cell line was used to verify the effects on epidermal inflammation by eosin at scalar doses after testing the viability of cells. Two different population of cells, one stimulated by IFNgamma and one non-stimulated, were cultivated in presence of tolerable concentrations. The expression and release of IL-6, IL-8, IL-10, and TNF-alpha were analysed by RT-PCR and ELISA, respectively. Our results show that tolerable concentrations of eosin were 0.05%, 0.02%, and 0.01%. The expression and production of TNFalpha, IL-8 and IL-6 were dramatically reduced in presence of eosin 0.05% and 0.02% and the action of eosin was more pronounced on TNF-alpha. In agreement with clinical data, our results show that in presence of tolerable concentrations, eosin seems to influence remarkably the production of three important cytokines involved in the hyperproliferation and inflammatory process, giving a specific explanation of its efficacy and supporting its topical use in the clinical setting.
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Affiliation(s)
- A Zampetti
- Department of Dermatology, Catholic University of the Sacred Heart, Rome, Italy.
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16
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Masurel-Paulet A, Andrieux J, Callier P, Cuisset JM, Le Caignec C, Holder M, Thauvin-Robinet C, Doray B, Flori E, Alex-Cordier MP, Beri M, Boute O, Delobel B, Dieux A, Vallee L, Jaillard S, Odent S, Isidor B, Beneteau C, Vigneron J, Bilan F, Gilbert-Dussardier B, Dubourg C, Labalme A, Bidon C, Gautier A, Pernes P, Pinoit JM, Huet F, Mugneret F, Aral B, Jonveaux P, Sanlaville D, Faivre L. Delineation of 15q13.3 microdeletions. Clin Genet 2010; 78:149-61. [PMID: 20236110 DOI: 10.1111/j.1399-0004.2010.01374.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The increasing use of array-comparative genomic hybridization (array-CGH) to identify copy number variations (CNVs) in patients with developmental delay (DD), mental retardation and/or dysmorphic features has allowed the recent recognition of numerous genomic imbalances, including the 15q13.3 microdeletion. Patients with this microdeletion generally present with relatively consistent breakpoints at BP4 and BP5, which include the CHRNA7 gene. About 100 index cases have been reported since the first publication in 2008. This large number of patients ascertained through highly variable samples has been necessary to describe the full phenotypic spectrum of this microdeletion, ranging from mental retardation with dysmorphic features, epilepsy, neuropsychiatric disturbances with or without cognitive impairment to complete absence of anomalies. Here, we describe a collaborative study reporting a new cohort of 12 index patients and 13 relatives carrying a heterozygous BP4-BP5 microdeletion out of a series of 4625 patients screened by array-CGH for DD. We confirm the clinical expressivity of the disease as well as the incomplete penetrance in seven families. We showed through a review of the literature that males are more likely to be symptomatic. Sequence analysis of CHRNA7 yielded no data to support the unmasking of recessive variants as a cause of phenotypic variability. We also report the first patient carrying a 15q13.3 homozygous microdeletion inherited from both parents. He had severe epileptic encephalopathy with retinopathy, autistic features and choreoathetosis. Besides the classical approximately 1.5 Mb BP4-BP5 microdeletion, we also describe three index patients and two relatives with a smaller 500 kb microdeletion, including the CHRNA7 gene.
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Affiliation(s)
- A Masurel-Paulet
- Centre de Génétique et Centre de Référence Anomalies du développement et syndromes malformatifs, Hôpital d'Enfants, CHU, Dijon
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17
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Mangin D, Soskin S, Masson E, Doray B, Danner S, Flori E, Fischbach M. SFP-P113 – Diabétologie, endocrinologie – Syndrome de Turner en mosaïque : entre clinique et chromosomes. Arch Pediatr 2008. [DOI: 10.1016/s0929-693x(08)72243-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Blanc F, Wolff V, Talmant V, Attali P, Germain P, Flori E, Toutain A, Dollfus H, Tranchant C. Late onset stroke and myocardial infarction in Williams syndrome. Eur J Neurol 2006; 13:e3-4. [PMID: 17116204 DOI: 10.1111/j.1468-1331.2006.01475.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schluth C, Cossée M, Girard-Lemaire F, Carelle N, Dollfus H, Jeandidier E, Flori E. Phenotype in X chromosome rearrangements: pitfalls of X inactivation study. ACTA ACUST UNITED AC 2006; 55:29-36. [PMID: 16690229 DOI: 10.1016/j.patbio.2006.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Accepted: 04/05/2006] [Indexed: 11/21/2022]
Abstract
OBJECTIVE X inactivation pattern in X chromosome rearrangements usually favor the less unbalanced cells. It is correlated to a normal phenotype, small size or infertility. We studied the correlation between phenotype and X inactivation ratio in patients with X structural anomalies. PATIENTS AND METHODS During the 1999-2005 period, 12 X chromosome rearrangements, including three prenatal cases, were diagnosed in the Laboratoire de Cytogénétique of Strasbourg. In seven cases, X inactivation ratio could be assessed by late replication or methylation assay. RESULTS In three of seven cases (del Xp, dup Xp, t(X;A)), X inactivation ratio and phenotype were consistent. The four other cases showed discrepancies between phenotype and X inactivation pattern: mental retardation and dysmorphism in a case of balanced X-autosome translocation, schizophrenia and autism in two cases of XX maleness and MLS syndrome (microphthalmia with linear skin defects) in a case of Xp(21.3-pter) deletion. CONCLUSION Discrepancies between X inactivation ratio and phenotype are not rare and can be due to gene disruption, position effect, complex microrearrangements, variable pattern of X inactivation in different tissues or fortuitous association. In this context, the prognostic value of X inactivation study in prenatal diagnosis will be discussed.
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MESH Headings
- Abnormalities, Multiple/genetics
- Adult
- Autistic Disorder/genetics
- Child, Preschool
- Chromosome Deletion
- Chromosomes, Human, X/genetics
- DNA Methylation
- DNA Replication Timing
- Dwarfism/genetics
- Female
- Fragile X Mental Retardation Protein/genetics
- Genes, X-Linked
- Genetic Diseases, X-Linked/diagnosis
- Genetic Diseases, X-Linked/embryology
- Genetic Diseases, X-Linked/genetics
- Humans
- Infant, Newborn
- Male
- Mental Retardation, X-Linked/genetics
- Phenotype
- Prenatal Diagnosis
- Receptors, Androgen/genetics
- Schizophrenia/genetics
- Translocation, Genetic/genetics
- Turner Syndrome/genetics
- X Chromosome Inactivation
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Affiliation(s)
- C Schluth
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, avenue Molière, 67098 Strasbourg cedex, France
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20
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Flori E, Doray B, Gautier E, Kohler M, Ernault P, Flori J, Costa JM. Circulating cell-free fetal DNA in maternal serum appears to originate from cyto- and syncytio-trophoblastic cells. Case report. Hum Reprod 2004; 19:723-4. [PMID: 14998976 DOI: 10.1093/humrep/deh117] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Circulating cell-free fetal DNA in maternal serum offers an early and non-invasive method for prenatal diagnosis, but the origin of this DNA is still unknown. We report the absence of the SRY gene in maternal serum of a pregnant woman despite male genitalia at ultrasound. The karyotype was 45,X after direct trophoblast analysis and 45,X/46,Xidic(Yp) after culture and in all fetal tissues studied. Due to the absence of the SRY sequence in maternal blood and in the cytotrophoblast, we presume that free fetal DNA in this case originates from trophoblastic cells. As the case presented here is exceptional, it only has a minor impact on the accuracy of fetal sex determination by maternal serum analysis, but highlights the importance of and the necessity for the complementary ultrasonographic control.
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Affiliation(s)
- E Flori
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, Strasbourg, France
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21
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Schluth C, Doray B, Girard-Lemaire F, Favre R, Flori J, Gasser B, Rudolf G, Flori E. Prenatal diagnosis of a true fetal tetraploidy in direct and cultured chorionic villi. Genet Couns 2004; 15:429-36. [PMID: 15658618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Prenatal diagnosis of a true fetal tetraploidy in direct and cultured chorionic villi: Tetraploidy is characterized by four complete sets of chromosomes (4n= 92). Although it has been frequently reported in spontaneous abortions, tetraploidy is extremely rare in term pregnancy. Most of late surviving patients are diploid/tetraploid mosaics and present severe mental and physical impairment. Up to date, only five tetraploidies were ascertained in the prenatal stage in amniocytes and/or fetal blood lymphocytes. No one has been reported in chorionic villi probably because tetraploidy is generally considered in this tissue as a false positive result due to confined placental mosaicism (CPM) or placental culture artefacts. We report here on a case of tetraploidy detected in chorionic villi because of fetal cystic hygroma. We discuss the reliability of this diagnosis and propose guidelines in the follow-up of tetraploidies detected after chorionic villus sampling (CVS). Thus a misdiagnosis of this poor condition will be avoided at best and an appropriate genetic counseling will be given to the parents.
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Affiliation(s)
- C Schluth
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, 67098 Strasbourg, France
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22
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Doray B, Favre R, Gasser B, Girard-Lemaire F, Schluth C, Flori E. Recurrent neural tube defects associated with partial trisomy 2p22-pter: report of two siblings and review of the literature. Genet Couns 2003; 14:165-72. [PMID: 12872810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
We report on two male siblings with partial trisomy 2p22-pter and partial monosomy 15q26-qter resulting from a maternally derived translocation t(2;15)(p22;q26). Both fetuses had different neural tube defects (craniorachischisis in the first fetus and anencephaly in the second fetus) which were detected by sonographic examination at the end of the first trimester of pregnancy. This report demonstrates the importance of chromosomal analysis in the etiologic exploration of neural tube defects and supports the importance of 2p24 triplication in neural tube development.
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Affiliation(s)
- B Doray
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, Strasbourg, France.
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23
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Flori E, Doray B, Rudolf G, Favre R, Girard-Lemaire F, Schluth C, Zix-Kieffer I, Flori J, Loriot M, Schmitt E, Rumpler Y. Failure of prenatal diagnosis of diploid-triploid mosaicism after amniocentesis. Clin Genet 2003; 63:328-31. [PMID: 12702170 DOI: 10.1034/j.1399-0004.2003.00062.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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24
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25
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Costes B, Girodon E, Vidaud D, Flori E, Ardalan A, Conteville P, Fanen P, Niel F, Vidaud M, Goossens M. Prenatal detection by real-time quantitative PCR and characterization of a new CFTR deletion, 3600+15kbdel5.3kb (or CFTRdele19). Clin Chem 2000; 46:1417-20. [PMID: 10973878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- B Costes
- Service de Biochimie et de Génétique Moléculaire, INSERM U468, Hôpital Henri Mondor, AP-HP, 51 Avenue du Maréchal de Lattre de Tassigny, 94010 Créteil, France.
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26
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Lipsker D, Cribier B, Girard-Lemaire F, Flori E, Grosshans E. Genetic mosaicism in an acquired inflammatory dermatosis following the lines of Blaschko. Arch Dermatol 2000; 136:805-7. [PMID: 10871961 DOI: 10.1001/archderm.136.6.805] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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27
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Sigaudy S, Vittu G, David A, Vigneron J, Lacombe D, Moncla A, Flori E, Philip N. Costello syndrome: report of six patients including one with an embryonal rhabdomyosarcoma. Eur J Pediatr 2000; 159:139-42. [PMID: 10664222 DOI: 10.1007/s004310050037] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
UNLABELLED Costello syndrome was first described in 1971. Besides papillomata, which were part of the initial description, patients tends to develop benign tumours of ectodermal origin. Aetiology is yet unknown but it is supposed to be the result of a sporadic dominant mutation. We report six patients with typical clinical findings and emphasise the importance of cardiac manifestations and the tendency to develop tumours. One patient developed an embryonal rhabdomyosarcoma, the occurrence of which has been reported twice before in patients with Costello syndrome. CONCLUSION There might be a causal link between the development of rare tumours and this genetic disorder which may provide a new clue concerning the identification of the gene involved in Costello syndrome.
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Affiliation(s)
- S Sigaudy
- Centre de Genetique Medicale, Hopital Timone Enfant, 13385 Marseilles cedex 5, France
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28
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Abstract
Preimplantation genetic diagnosis (PGD) allows the detection of genetic defects before implantation, thus circumventing the possible need for abortion. France's current legislation allows the practice of PGD under certain circumstances which include the prerequisite agreement of the French health authority. Unfortunately, to enact the pending 'bioethical law', voted in July 1994, a decree still needs to be published. So, for the moment, although we know that PGD should be authorized, its practice is currently impossible in France. In order to prepare for licensing, we are setting up the relevant technologies, by performing biopsy on mouse embryos and fluorescent in-situ hybridization (FISH) experiments on human lymphoblast cells. We briefly describe the French legal situation with regard to PGD and the work we have performed in this context to obtain the licensing to offer PGD to patients. After a period of preparation, 95.9% of biopsies were successful and up to 95.4% of the biopsied blastomeres were properly spread onto slides. Biopsied and control mouse embryos were reimplanted into pseudopregnant females and similar birth rates were obtained (34.4 and 30.9% respectively). In these experiments we noticed a birth delay of 12-24 h for the biopsied embryos compared with the controls. Furthermore, scanning electron microscopy of the biopsied embryos allowed assessment of the hole made by the Tyrode's acid. By intercrossing adults derived from biopsied embryos for two successive generations, it was shown that the biopsy did not generate defects affecting their reproductive ability. FISH experiments were performed using specific probes for chromosomes X, Y and 1 on nuclei spread by a conventional protocol or a Tween/HCl blastomere spreading protocol; in the latter case, slides with 1-5 cells were prepared. A similar percentage of correct X,Y,1,1 signal was obtained from all three types of spreading, varying from 85.5 to 89.9%.
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Affiliation(s)
- S Viville
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/ULP, Collège de France, Illkirch
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29
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Amiel J, Attié T, Jan D, Pelet A, Edery P, Bidaud C, Lacombe D, Tam P, Simeoni J, Flori E, Nihoul-Fékété C, Munnich A, Lyonnet S. Heterozygous endothelin receptor B (EDNRB) mutations in isolated Hirschsprung disease. Hum Mol Genet 1996; 5:355-7. [PMID: 8852660 DOI: 10.1093/hmg/5.3.355] [Citation(s) in RCA: 138] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Hirschsprung disease (HSCR, aganglionic megacolon) is a frequent congenital malformation regarded as a multigenic neurocristopathy. Two susceptibility genes have been recently identified in HSCR, namely the RET proto-oncogene and the endothelin B receptor (EDNRB) gene. Hitherto however, homozygosity for EDNRB mutations accounted for the HSCR-Waardenburg syndrome (WS) association. Here, we report heterozygous EDNRB missense mutations (G57S, R319W and P383L) in isolated HSCR. These data might suggest that EDNRB mutations could be dosage sensitive: heterozygosity would predispose to isolated HSCR with incomplete penetrance, while homozygosity would result in more complex neurocristopathies associating HSCR and WS features. In addition, the present data give further support to the role of the endothelin-signalling pathway in the development of neural crest-derived enteric neurons.
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Affiliation(s)
- J Amiel
- Service de Génétique Médicale and Clinique Chirurgicale Infantile, Unité de Recherches sur les Handicaps Génétiques de l'Enfant INSERM U-393, Paris, France
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30
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Desbois-Mouthon C, Sert-Langeron C, Magre J, Oreal E, Blivet MJ, Flori E, Besmond C, Capeau J, Caron M. Deletion of Asn281 in the alpha-subunit of the human insulin receptor causes constitutive activation of the receptor and insulin desensitization. J Clin Endocrinol Metab 1996; 81:719-27. [PMID: 8636294 DOI: 10.1210/jcem.81.2.8636294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We studied the structure and function of the insulin receptor (IR) in two sisters with leprechaunism. The patients had inherited alterations in the IR gene and were compound heterozygotes. Their paternal IR allele carried a major deletion, including exons 10-13, which shifted the reading frame and introduced a premature chain termination codon in the IR sequence. This allele was expressed at a very low level in cultured fibroblasts (< 10% of total IR messenger ribonucleic acid content) and encoded a truncated protein lacking transmembrane and tyrosine kinase domains. The maternal IR allele was deleted of 3 bp in exon 3, causing the loss of Asn281 in the alpha-subunit. This allele generated levels of IR messenger ribonucleic acid and cell surface receptors similar to those seen in control fibroblasts. However, IRs from patients' cells had impaired insulin binding and exhibited in vivo and in vitro constitutive activation of autophosphorylation and tyrosine kinase activity. As a result of this IR-preactivated state, the cells were desensitized to insulin stimulation of glycogen and DNA syntheses. These findings strongly suggest that Asn281 of the IR alpha-subunit plays a critical role in the inhibitory constraint exerted by the extracellular alpha-subunit over the intracellular kinase activity.
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31
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Chaigne D, Moutard M, Walls E, Pinard J, Flori E, Plouin P. Apport de I'EEG au diagnostic du syndrome d'Angelman à partir d'une série de 10 cas porteurs d'une microdélétion 15q. Arch Pediatr 1995. [DOI: 10.1016/0929-693x(95)90450-h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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32
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Costes B, Girodon E, Ghanem N, Flori E, Jardin A, Soufir JC, Goossens M. Frequent occurrence of the CFTR intron 8 (TG)n 5T allele in men with congenital bilateral absence of the vas deferens. Eur J Hum Genet 1995; 3:285-93. [PMID: 8556303 DOI: 10.1159/000472312] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Isolated congenital bilateral absence of the vas deferens (CBAVD) is an autosomal recessive disorder which has recently been shown to be associated with cystic fibrosis (CF) mutations. As part of an effort to understanding the genetic basis of this disorder, we have analysed the entire coding sequence and all the intron/exon boundaries of the cystic fibrosis transmembrane conductance regulator (CFTR) gene from 45 azoospermic individuals with this phenotype. We were able to detect a CFTR gene defect in 86% of chromosomes from these subjects. In addition to identifying 9 novel CFTR gene mutations, we found that a surprisingly high proportion (84%) of men with CBAVD who are heterozygous for a CF mutation carry the intron 8 polypyrimidine 5T CFTR allele on one chromosome. We hypothesise that this tight and significant (p < 10(-6)) linkage reflects the very mild impact of this mutation on CFTR gene expression. Although genetic heterogeneity cannot be excluded, CBAVD patients in whom no CFTR mutation has been detected are likely to harbour additional unidentified mild mutations. These observations have implications for the genetic counselling of CBAVD patients and CF families, and couples undergoing in vitro fertilisation procedures.
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Affiliation(s)
- B Costes
- Laboratoire de Génétique Moléculaire, INSERM U91, Hôpital Henri-Mondor, Créteil, France
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33
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Abstract
A 57-year-old patient was referred because of primary sterility. Spermogram and testicular histology showed moderate oligospermia and irregular hypospermatogenesis. Karyotypic analysis revealed the presence of a metacentric supernumerary chromosome. Synaptonemal complex analysis using the surface-spreading technique was undertaken to study the meiotic behaviour of the extra chromosome during the pachytene stages. The relationship of the extra chromosome to the infertility of the carrier is discussed.
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Affiliation(s)
- H Jaafar
- Institut d'Embryologie, Université Louis Pasteur, Faculté de médecine, Strasbourg, France
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34
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Fujita M, Flori E, Lemaire F, Casanova R, Astruc D. A new case of "complete" trisomy 5p with isochromosome 5p associated with a de novo translocation t(5;8)(q11;p23). Clin Genet 1994; 45:305-7. [PMID: 7923861 DOI: 10.1111/j.1399-0004.1994.tb04036.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A boy with a de novo translocation t(5;8)(q11;p23) and an isochromosome 5p is described. The main clinical features found in the complete trisomies 5p are reviewed and the mechanisms of the chromosomal rearrangements involving centromeric and telomeric regions are discussed.
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Affiliation(s)
- M Fujita
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, Strasbourg, France
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35
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Abstract
Usually the chromosome anomalies encountered in ALL are modal number abnormalities (hyperdiploidy or hypodiploidy) and structural anomalies such as t(8;14), t(11;14), t(9;22), t(1;19) and del(6p). The 5q- syndrome is mainly associated with myelodysplastic syndromes and with ANLL (M1, M2, M3). We report the case of a patient presenting with a mosaic karyotype 46,XY/92,XXYY,del(5)(q13 q34) in the following proportion 1/3 normal mitoses and 2/3 tetraploid mitoses.
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Affiliation(s)
- C Valtat
- Laboratoire de Cytogenetique, Hopital de Hautepierre, Strasbourg, France
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36
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Formiga LD, Poenaru L, Couronne F, Flori E, Eibel JL, Deminatti MM, Savary JB, Lai JL, Gilgenkrantz S, Pierson M. Interstitial deletion of chromosome 15: two cases. Hum Genet 1988; 80:401-4. [PMID: 3198122 DOI: 10.1007/bf00273663] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Two cases of interstitial deletion of chromosome 15 with similar clinical features are presented. In one case, assay of hexosaminidase A enabled us to confirm that the structural gene is located between 15q22 and 15q25 and that it is included in the deletion.
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Affiliation(s)
- L D Formiga
- Service de Génétique, Centre de Transfusion Sanguine, Vandoeuvre les Nancy, France
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37
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Treisser A, Flori E, Lellouche D, Ruch JV, Renaud R. [Diagnosis of trisomy 21 during the first trimester of pregnancy by a trophoblast specimen]. Presse Med 1985; 14:1609. [PMID: 2931703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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38
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Abstract
An easy and reproducible technique for direct fetal chromosome analysis after chorionic biopsy is described. Very high colchicine concentration and rehydratation of the fixed villi are the two original points of this method.
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39
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Flori E, Nisand I, Flori J, Spielmann A, Durand JL, Ruch JV, Dellenbach P. [Determination of fetal karyotype in the first trimester of pregnancy by direct examination of chorionic villi]. J Genet Hum 1985; 33:167-9. [PMID: 4020351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chorionic biopsy during the first trimester of pregnancy allows fast and precise study of fetal karyotype. Considering the results of our ten prenatal diagnoses, we discuss the advantages and the risks of this method.
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40
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Stoll C, Flori E, Macler J, Renaud R. Prenatal diagnosis and postnatal follow-up of an abnormal child with two de novo apparently balanced translocations. Hum Genet 1979; 47:221-4. [PMID: 437789 DOI: 10.1007/bf00273207] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
By prenatal diagnosis two apparently unrelated reciprocal translocations involving chromosomes 6/15 and 13/14 were revealed in a fetus in whom echography demonstrated an abdominal tumor. Pregnancy continued. At birth the child had dysmorphia and hydronephrosis, for which surgery was performed. The psychomotor development was delayed. These abnormalities may be the result of the loss of a small amount of chromosomal material accompanying these translocations.
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41
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Abstract
Abnormal children of two 47,XYY men were studied. One of these men had 2 normal daughters and a child, 45,X/46,XY, with gonadal dysgenesis. The other man had 2 normal sons and a child with Down's syndrome. The extra chromosome 21 of this child came from the mother. Another 47,XYY man had 4 normal children.
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42
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Stoll C, Oberling F, Flori E. Chromosome analysis of spleen and/or lymph nodes of patients with chronic myeloid leukemia (CML). Blood 1978; 52:828-38. [PMID: 278633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Origin and spread of the chromosomally abnormal cells that appear in chronic myeloid leukemia (CML) after transformation are unknown. Spleen and lymph node may be involved. In 16 patients with CML splenectomy and/or adenectomy were performed before or during the blastic crisis of the disease, followed by a chromosomal analysis of the cells from the removed organ. At the same time, the chromosomes of the blood cell and of the bone marrow were also analyzed. Analyses were done with R banding. The results show that an extramedullary clonal development with duplication of the Ph1 chromosome and other features occurred. From a cytogenetic standpoint, acute blastic phase of CML is frequently characterized by an increased number of chromosomes owing to preferential gain of additional chromosomes. This, then, would clearly point to extamedullary acute transition in CML.
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43
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Stoll C, Bieth R, Dreyfus J, Flori E, Lutz P, Levy JM. [A new family with mutation of the structural gene of human ornithine carbamoyltransferase]. Arch Fr Pediatr 1978; 35:512-8. [PMID: 678030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Studies of a child with hyperammonemia have demonstrated a deficiency in OCTase. The kinetic properties of the enzyme were studied and it could be shown that we have to deal with a new mutation which is different from the ones previously known. It is a mutation of the structural gene. The detection of a heterozygote is possible when the urinary orotic acid excretion is studied after a loading meal (2g of proteines per kilo of weight). A child with hyperammonaemia due to ornithine transcarbamylase deficiency is described. A new structural gene mutation is probable because the kinetic properties of the enzyme are different to previously described variants. The heterozygote could be detected by the measurement of the excretion of orotic acid in the urine following a protein load of 2 g/Kg.
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44
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Freysz H, Flori E, Beyer P. [Rectosigmoid angiomatosis. Study of a personal case associated with a minimal Klippel-Trenaunay's syndrome]. Pediatrie 1975; 30:525-31. [PMID: 170582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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