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Oziębło D, Lee SY, Leja ML, Sarosiak A, Bałdyga N, Skarżyński H, Kim Y, Han JH, Yoo HS, Park MH, Choi BY, Ołdak M. Update on CD164 and LMX1A genes to strengthen their causative role in autosomal dominant hearing loss. Hum Genet 2022; 141:445-453. [PMID: 35254497 DOI: 10.1007/s00439-022-02443-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/18/2022] [Indexed: 12/24/2022]
Abstract
Novel hearing loss (HL) genes are constantly being discovered, and evidence from independent studies is essential to strengthen their position as causes of hereditary HL. To address this issue, we searched our genetic data of families with autosomal dominant HL (ADHL) who had been tested with high-throughput DNA sequencing methods. For CD164, only one pathogenic variant in one family has so far been reported. For LMX1A, just two previous studies have revealed its involvement in ADHL. In this study we found two families with the same pathogenic variant in CD164 and one family with a novel variant in LMX1A (c.686C>A; p.(Ala229Asp)) that impairs its transcriptional activity. Our data show recurrence of the same CD164 variant in two HL families of different geographic origin, which strongly suggests it is a mutational hotspot. We also provide further evidence for haploinsufficiency as the pathogenic mechanism underlying LMX1A-related ADHL.
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Affiliation(s)
- Dominika Oziębło
- Department of Genetics, Institute of Physiology and Pathology of Hearing, 10 M. Mochnackiego Street, 02-042, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Sang-Yeon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Marcin Ludwik Leja
- Department of Genetics, Institute of Physiology and Pathology of Hearing, 10 M. Mochnackiego Street, 02-042, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna Sarosiak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, 10 M. Mochnackiego Street, 02-042, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Natalia Bałdyga
- Department of Genetics, Institute of Physiology and Pathology of Hearing, 10 M. Mochnackiego Street, 02-042, Warsaw, Poland
| | - Henryk Skarżyński
- Oto-Rhino-Laryngology Surgery Clinic, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Yehree Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 13620, Republic of Korea
| | - Jin Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 13620, Republic of Korea
| | - Hyo Soon Yoo
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 13620, Republic of Korea
| | - Min Hyun Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul Metropolitan Government-Seoul National University, Seoul, Korea
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Byung Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 300 Gumi-dong, Bundang-gu, Seongnam, 13620, Republic of Korea.
- Sensory Organ Research Institute, Seoul National University Medical Research Center, Seoul, Korea.
| | - Monika Ołdak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, 10 M. Mochnackiego Street, 02-042, Warsaw, Poland.
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Sarosiak A, Oziębło D, Udziela M, Vermeer C, Malejczyk J, Szaflik JP, Ołdak M. High expression of Matrix Gla Protein in Schnyder corneal dystrophy patients points to an active role of vitamin K in corneal health. Acta Ophthalmol 2021; 99:e171-e177. [PMID: 32602245 DOI: 10.1111/aos.14533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/28/2020] [Accepted: 06/02/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE Schnyder corneal dystrophy (SCD) is a rare autosomal dominant disorder characterized by corneal lipid accumulation and caused by UBIAD1 pathogenic variants. UBIAD1 encodes a vitamin K (VK) biosynthetic enzyme. To assess the corneal and vascular VK status in SCD patients, we focused on matrix Gla protein (MGP), a VK-dependent protein. METHODS Conformation-specific immunostainings of different MGP maturation forms were performed on corneal sections and primary keratocytes from corneal buttons of two SCD patients with UBIAD1 p.Asp112Asn and p.Asn102Ser pathogenic variants and unrelated donors. Native or UBIAD1-transfected keratocytes were used for gene expression analysis. Plasma samples from SCD patients (n = 12) and control individuals (n = 117) were subjected for inactive desphospho-uncarboxylated MGP level measurements with an ELISA assay. RESULTS Substantial amounts of MGP were identified in human cornea and most of it in its fully matured and active form. The level of mature MGP did not differ between SCD and control corneas. In primary keratocytes from SCD patients, a highly increased MGP expression and presence of immature MGP forms were detected. Significantly elevated plasma concentration of inactive MGP was found in SCD patients. CONCLUSION High amount of MGP and the predominance of mature MGP forms in human cornea indicate that VK metabolism is active in the visual system. Availability of MGP seems of vital importance for a healthy cornea and may be related to protection against corneal calcification. Systemic MGP findings reveal a poor vascular VK status in SCD patients and indicate that SCD may lead to cardiovascular consequences.
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Affiliation(s)
- Anna Sarosiak
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Dominika Oziębło
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Monika Udziela
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Cees Vermeer
- R&D Group VitaK and Cardiovascular Research Institute CARIM, Maastricht University, Maastricht, The Netherlands
| | - Jacek Malejczyk
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Jacek P Szaflik
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Monika Ołdak
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Warsaw, Poland
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Bałdyga N, Sarosiak A, Oziębło D, Furmanek M, Szulborski K, Szaflik JP, Skarżyński H, Ołdak M. Complex Phenotypic Presentation of Syndromic Hearing Loss Deciphered as Three Separate Clinical Entities: How Genetic Testing Guides Final Diagnosis. Audiol Neurootol 2020; 26:226-235. [PMID: 33352548 DOI: 10.1159/000510695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/17/2020] [Accepted: 08/05/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Genetically determined prelingual hearing loss (HL) may occur in an isolated or syndromic form. OBJECTIVE The aim of the study was to unravel the genetic cause of medical problems in a 21-year-old woman, whose phenotypic presentation extended beyond Stickler syndrome and included enlarged vestibular aqueduct (EVA) and persistent microhematuria. METHODS AND RESULTS After sequencing of clinical exome, a known de novo COL2A1 pathogenic variant (c.1833+1G>A, p.?) causative for Stickler syndrome and one paternally inherited pathogenic change in COL4A5 (c.1871G>A, p.Gly624Asp) causative for X-linked Alport syndrome were found. No pathogenic variants, including those within the SLC26A4 5' region (Caucasian EVA haplotype), explaining the development of EVA, were identified. CONCLUSIONS The study reveals a multilocus genomic variation in one individual and provides a molecular diagnosis of two HL syndromes that co-occur in the proband independent of each other. For the third entity, EVA, no etiological factor was identified. Our data emphasize the relevance of detailed clinical phenotyping for accurate genotype interpretation. Focus on broadening the phenotypic spectrum of known genetic syndromes may actually obscure patients with multiple molecular diagnoses.
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Affiliation(s)
- Natalia Bałdyga
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Anna Sarosiak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Dominika Oziębło
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Mariusz Furmanek
- Bioimaging Research Center, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Kamil Szulborski
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Jacek P Szaflik
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Henryk Skarżyński
- Oto-Rhino-Laryngology Surgery Clinic, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Monika Ołdak
- Department of Genetics, Institute of Physiology and Pathology of Hearing, Warsaw, Poland,
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Oziębło D, Sarosiak A, Leja ML, Budde BS, Tacikowska G, Di Donato N, Bolz HJ, Nürnberg P, Skarżyński H, Ołdak M. First confirmatory study on PTPRQ as an autosomal dominant non-syndromic hearing loss gene. J Transl Med 2019; 17:351. [PMID: 31655630 PMCID: PMC6815010 DOI: 10.1186/s12967-019-2099-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/15/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Biallelic PTPRQ pathogenic variants have been previously reported as causative for autosomal recessive non-syndromic hearing loss. In 2018 the first heterozygous PTPRQ variant has been implicated in the development of autosomal dominant non-syndromic hearing loss (ADNSHL) in a German family. The study presented the only, so far known, PTPRQ pathogenic variant (c.6881G>A) in ADNSHL. It is located in the last PTPRQ coding exon and introduces a premature stop codon (p.Trp2294*). METHODS A five-generation Polish family with ADNSHL was recruited for the study (n = 14). Thorough audiological, neurotological and imaging studies were carried out to precisely define the phenotype. Genomic DNA was isolated from peripheral blood samples or buccal swabs of available family members. Clinical exome sequencing was conducted for the proband. Family segregation analysis of the identified variants was performed using Sanger sequencing. Single nucleotide polymorphism array on DNA samples from the Polish and the original German family was used for genome-wide linkage analysis. RESULTS Combining clinical exome sequencing and family segregation analysis, we have identified the same (NM_001145026.2:c.6881G>A, NP_001138498.1:p.Trp2294*) PTPRQ alteration in the Polish ADNSHL family. Using genome-wide linkage analysis, we found that the studied family and the original German family derive from a common ancestor. Deep phenotyping of the affected individuals showed that in contrast to the recessive form, the PTPRQ-related ADNSHL is not associated with vestibular dysfunction. In both families ADNSHL was progressive, affected mainly high frequencies and had a variable age of onset. CONCLUSION Our data provide the first confirmation of PTPRQ involvement in ADNSHL. The finding strongly reinforces the inclusion of PTPRQ to the small set of genes leading to both autosomal recessive and dominant hearing loss.
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Affiliation(s)
- Dominika Oziębło
- Department of Genetics, World Hearing Center, Institute of Physiology and Pathology of Hearing, M. Mochnackiego 10, 02-042, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna Sarosiak
- Department of Genetics, World Hearing Center, Institute of Physiology and Pathology of Hearing, M. Mochnackiego 10, 02-042, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Marcin L Leja
- Department of Genetics, World Hearing Center, Institute of Physiology and Pathology of Hearing, M. Mochnackiego 10, 02-042, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Birgit S Budde
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Grażyna Tacikowska
- Department of Otoneurology, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | | | - Hanno J Bolz
- Senckenberg Zentrum für Humangenetik, Frankfurt am Main, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics (CCG), University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University Hospital Cologne, Cologne, Germany
| | - Henryk Skarżyński
- Department of Oto-Rhino-Laryngology Surgery Clinic, Institute of Physiology and Pathology of Hearing, Warsaw, Poland
| | - Monika Ołdak
- Department of Genetics, World Hearing Center, Institute of Physiology and Pathology of Hearing, M. Mochnackiego 10, 02-042, Warsaw, Poland.
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Sarosiak A, Minota I, Koziol K, Oldak M. 7. GENETIC TESTING FOR COPY NUMBER VARIATIONS IN FIRST POLAR BODIES AND OOCYTES BY SINGLE-CELL NEXT-GENERATION SEQUENCING. Reprod Biomed Online 2019. [DOI: 10.1016/j.rbmo.2019.04.060] [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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Sarosiak A, Udziela M, Ścieżyńska A, Oziębło D, Wawrzynowska A, Szaflik JP, Ołdak M. Clinical diversity in patients with Schnyder corneal dystrophy-a novel and known UBIAD1 pathogenic variants. Graefes Arch Clin Exp Ophthalmol 2018; 256:2127-2134. [PMID: 30084067 PMCID: PMC6208719 DOI: 10.1007/s00417-018-4075-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 06/29/2018] [Accepted: 07/23/2018] [Indexed: 12/21/2022] Open
Abstract
PURPOSE Schnyder corneal dystrophy (SCD) is a rare inherited disease that leads to gradual vision loss by the deposition of lipids in the corneal stroma. The aim of this study is to report a novel pathogenic variant in the UBIAD1 gene and present clinical and molecular findings in Polish patients with SCD. METHODS Individuals (n = 37) originating from four Polish SCD families were subjected for a complete ophthalmological check-up and genetic testing. Corneal changes were visualized by slit-lamp examination, anterior segment optical coherent tomography (AS-OCT), and in vivo confocal microscopy (IVCM). RESULTS In a proband with primarily mild SCD that progressed rapidly at the end of the fifth decade of life, a novel missense pathogenic variant in UBIAD1 (p.Thr120Arg) was identified. The other studied SCD family represents the second family reported worldwide with the UBIAD1 p.Asp112Asn variant. SCD in the remaining two families resulted from a frequently identified p.Asn102Ser pathogenic variant. All affected subjects presented a crystalline form of SCD. The severity of corneal changes was age-dependent, and their morphology and localization are described in detail. CONCLUSION The novel p.Thr120Arg is the fourth SCD-causing variant lying within the FARM motif of the UBIAD1 protein, which underlines a high importance of this motif for SCD pathogenesis. The current study provides independent evidence for the pathogenic potential of UBIAD1 p.Asp112Asn and new information useful for clinicians.
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Affiliation(s)
- Anna Sarosiak
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, T. Chałubińskiego 5, 02-004, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Monika Udziela
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Aneta Ścieżyńska
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, T. Chałubińskiego 5, 02-004, Warsaw, Poland
| | - Dominika Oziębło
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, T. Chałubińskiego 5, 02-004, Warsaw, Poland
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna Wawrzynowska
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, T. Chałubińskiego 5, 02-004, Warsaw, Poland
| | - Jacek P Szaflik
- Department of Ophthalmology, Medical University of Warsaw, Warsaw, Poland
| | - Monika Ołdak
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, T. Chałubińskiego 5, 02-004, Warsaw, Poland.
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Sarosiak A, Ołdak M, Ołdak M. Functional characterization of the UBIAD1 protein: The nodal point for vitamin K and cholesterol synthesis. From corneal dystrophies to lifestyle diseases. POSTEP HIG MED DOSW 2018. [DOI: 10.5604/01.3001.0011.6388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
UbiA prenyltransferase domain-containing protein 1 (UBIAD1) is a transmembrane enzyme
that plays an essential physiological role in the human body. The most important functions of
the UBIAD1 protein include (i) the synthesis of endogenous vitamin K, (ii) direct and indirect
participation in the cholesterol synthesis pathway and (iii) synthesis of the non-mitochondrial
ubiquinone Q10 (CoQ10), a cellular antioxidant [27, 28, 30]. UBIAD1 is the only protein
in the human body that is known to convert derivatives of the plant form of vitamin K1 to the
endogenous vitamin K2 (MK-4).
Mutations in the UBIAD1 gene and/or dysfunction of the UBIAD1 protein have severe consequences
on cellular metabolism and are causative of many diseases, including Schnyder corneal
dystrophy (SCD). It is an inherited disease that leads to gradual vision loss by the deposition
of lipids in the cornea. The mechanism of the disease remains largely unknown. Importantly,
dysfunction of UBIAD1 was also found in other diseases, such as (i) Parkinson’s disease, (ii)
cardiovascular diseases and (iii) prostate and bladder cancer.
In this paper we attempt to present a wide characterization of UBIAD1 metabolic functions
at the cellular and tissue level. We also show the mechanisms that may lead to pathological
changes observed in SCD. Based on previous research, we demonstrate the complexity of processes
in which the UBIAD1 protein is involved. The aim of this review is to analyze possible
causes and to present a probable explanation for the occurrence of various diseases related
to the dysfunction of UBIAD1.
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Affiliation(s)
- Anna Sarosiak
- Katedra i Zakład Histologii i Embriologii, Centrum Biostruktury, Warszawski Uniwersytet Medyczny
| | - Monika Ołdak
- Katedra i Zakład Histologii i Embriologii, Centrum Biostruktury, Warszawski Uniwersytet Medyczny
| | - Monika Ołdak
- Katedra i Zakład Histologii i Embriologii, Centrum Biostruktury, Warszawski Uniwersytet Medyczny
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Udziela M, Oziębło D, Sarosiak A, Ołdak M, Szaflik J. CTG18.1 trinucleotide repeat expansion in Polish patients with Fuchs endothelial corneal dystrophy. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0f020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Udziela
- Department of Ophthalmology; Medical University of Warsaw; Warsaw Poland
| | - D. Oziębło
- Department of Genetics; Institute of Physiology and Pathology of Hearing; Warsaw Poland
- Postgraduate School of Molecular Medicine; Medical University of Warsaw; Warsaw Poland
- Department of Histology and Embryology; Medical University of Warsaw; Warsaw Poland
| | - A. Sarosiak
- Postgraduate School of Molecular Medicine; Medical University of Warsaw; Warsaw Poland
- Department of Histology and Embryology; Medical University of Warsaw; Warsaw Poland
| | - M. Ołdak
- Department of Genetics; Institute of Physiology and Pathology of Hearing; Warsaw Poland
- Department of Histology and Embryology; Medical University of Warsaw; Warsaw Poland
| | - J.P. Szaflik
- Department of Ophthalmology; Medical University of Warsaw; Warsaw Poland
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