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Öztürk Ö, Bagis H, Bolu S. Osteogenesis Imperfecta and Split Foot Malformation due to 7q21.2q21.3 Deletion Including COL1A2, DLX5/6 Genes: Review of the Literature. J Pediatr Genet 2024; 13:69-79. [PMID: 38567169 PMCID: PMC10984717 DOI: 10.1055/s-0041-1736613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 09/22/2021] [Indexed: 10/19/2022]
Abstract
Copy number variation in loss of 7q21 is a genetic disorder characterized by split hand/foot malformation, hearing loss, developmental delay, myoclonus, dystonia, joint laxity, and psychiatric disorders. Osteogenesis imperfecta caused by whole gene deletions of COL1A2 is a very rare condition. We report a Turkish girl with ectrodactyly, joint laxity, multiple bone fractures, blue sclera, early teeth decay, mild learning disability, and depression. A copy number variant in loss of 4.8 Mb at chromosome 7 (q21.2q21.3) included the 58 genes including DLX5, DLX6, DYNC1I1, SLC25A13, SGCE, and COL1A2 . They were identified by chromosomal microarray analysis. We compared the findings in our patients with those previously reported. This case report highlights the importance of using microarray to identify the genetic etiology in patients with ectrodactyly and osteogenesis imperfecta.
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Affiliation(s)
- Özden Öztürk
- Department of Medical Genetics, Medical School of Adiyaman University, Adiyaman, Türkiye
| | - Haydar Bagis
- Department of Medical Genetics, Medical School of Adiyaman University, Adiyaman, Türkiye
| | - Semih Bolu
- Department of Pediatrics, Division of Pediatric Endocrinology, Medical School of Adiyaman University, Adiyaman, Türkiye
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Wu W, Yang Z, Long F, Luo L, Deng Q, Wu J, Ouyang S, Tang D. COL1A1 and MZB1 as the hub genes influenced the proliferation, invasion, migration and apoptosis of rectum adenocarcinoma cells by weighted correlation network analysis. Bioorg Chem 2019; 95:103457. [PMID: 31901757 DOI: 10.1016/j.bioorg.2019.103457] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 10/15/2019] [Accepted: 11/19/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVES The influences of COL1A1 and MZB1 on the proliferation, migration, invasion and apoptosis abilities of rectum adenocarcinoma was aimed to explore in this study. METHODS Gene expression levels in rectum adenocarcinoma and adjacent tissues were analyzed by differential analysis. Weighted gene correlation network analysis (WGCNA) was employed to investigate rectal adenocarcinoma (READ) hub genes. MCODE was performed to screen the modules of protein-protein interaction network in Cytoscape software. Database for Annotation, Visualization and Integrated Discovery (DAVID) online tool is considered to be the most effective tool in gene ontology (GO) enrichment and Kyoto Gene and Genomics Encyclopedia (KEGG) pathway analysis. Survival analysis was performed using READ patient information from TCGA-READ project database. Quantitative Real-time Polymerase Chain Reaction (qRT-PCR) and western blot were employedto examinemRNA and protein expressions of COL1A1 and MZB1 in tumor tissues and cell lines. After transfecting various interference sequences by liposome-mediated transfection, the influence of COL1A1 and MZB1 on the proliferation, apoptosis, migration and invasion of rectal cancer cells were observed by plate clone formation assay, flow cytometry, wound healing assay and transwell assay respectively. Moreover, xenograft tumor growth assay in vivo validated the results. RESULTS Higher expression levels of COL1A1 and lower expression levels of MZB1 were discovered in tumor tissues of patients with colorectal adenocarcinoma. Overexpression of MZB1 and silencing COL1A1 significantly inhibited proliferation, migration and invasion, while cell apoptosis was promoted. Overexpression of MZB1 and silencing COL1A1 inhibited the orthotopic growth of tumor in vivo. CONCLUSION COL1A1 promoted proliferation, migration and invasion but inhibited apoptosis of rectal adenocarcinoma cells while MZB1 was totally on the contrary.
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Affiliation(s)
- Wenyu Wu
- Department of Oncology, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, Guizhou, China
| | - Zhu Yang
- Party Committee Office, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Fengxi Long
- Graduate School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Li Luo
- Department of Oncology, Guihang Guiyang Hospital, Guiyang 550009, Guizhou, China
| | - Qian Deng
- Graduate School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Jinlin Wu
- Graduate School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Silu Ouyang
- Graduate School, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Dongxin Tang
- Department of Science and Education, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550001, Guizhou, China.
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Papanna MC, Tafazal S, Bell MJ, Giles SN, Fernandes JA. Femoral neck fractures in osteogenesis imperfecta treated with bisphosphonates. J Child Orthop 2017; 11:191-194. [PMID: 28828062 PMCID: PMC5548034 DOI: 10.1302/1863-2548.11.160212] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Osteogenesis imperfecta (OI) is a condition characterised by bone fragility and multiple fractures, which cause considerable morbidity in the affected patients. Most cases are associated with mutations in one of the type I collagen genes. Recently, bisphosponates have been used widely to reduce pain and the incidence of fragility fractures in OI in children, even though there have been concerns raised regarding the long-term complications of it due to their effect on the bone. The fragility fractures involving the neck of the femur in children with intramedullary rods in the femoral shaft are very difficult to treat. Although these fractures are frequently un-displaced, they require optimal internal fixation to achieve fracture union. The aim of this study was to assess the clinical and radiological outcomes of OI patients with intracapsular femoral neck fracture treated with headless compression screws. METHOD AND RESULTS At our institute, we identified seven patients (11 hips) with OI who underwent internal fixation with headless compression screws for a neck of femur fracture between June 2010 and Dec 2012. The time to fractures healing was on average 14 weeks (12 to 16). All patients gained their pre-injury ambulatory status. CONCLUSION It is very challenging and technically demanding for orthopaedic surgeons when treating the fragility fracture of the neck of femur in patients with intramedullary rod in the femoral shaft. The published data regarding the management of these complex conditions are very limited. We describe our experience with the technique of percutaneous headless compression screw fixation for treating the femoral neck fractures in OI patients.
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Affiliation(s)
- M. C. Papanna
- Department of Trauma and Orthopaedics, Northern General Hospital, Sheffield, S5 7AU, UK,Correspondence should be sent to: Mr M.C. Papanna, Department of Trauma and Orthopaedics, Northern General Hospital, Sheffield, S5 7AU, UK. E-mail:
| | - S. Tafazal
- Department of Trauma and Orthopaedics, Sheffield Children’s Hospital, Sheffield, S10 2TH, UK
| | - M. J. Bell
- Department of Trauma and Orthopaedics, Sheffield Children’s Hospital, Sheffield, S10 2TH, UK
| | - S. N. Giles
- Department of Trauma and Orthopaedics, Sheffield Children’s Hospital, Sheffield, S10 2TH, UK
| | - J. A. Fernandes
- Department of Trauma and Orthopaedics, Sheffield Children’s Hospital, Sheffield, S10 2TH, UK
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Chen CP, Su YN, Chang TY, Chern SR, Chen CY, Su JW, Wang W. Osteogenesis imperfecta type I: second-trimester diagnosis and incidental identification of a dominant COL1A1 deletion mutation in the paucisymptomatic father. Taiwan J Obstet Gynecol 2013; 51:276-9. [PMID: 22795108 DOI: 10.1016/j.tjog.2012.04.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2012] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE To present second-trimester ultrasound and molecular diagnosis for osteogenesis imperfecta (OI) type I in a female fetus and incidental identification of a dominant COL1A1 deletion mutation in her paucisymptomatic father. CASE REPORT A 30-year-old, primigravid woman was referred for genetic counseling in the second trimester because of bowing of the fetal lower limbs. She and her husband were non-consanguineous, and there was no family history of skeletal dysplasias. Prenatal ultrasound at 22 weeks of gestation revealed short and curved right femur and left tibia, and a short left fibula. The lengths of other long bones were normal. The husband was 158 cm tall, had blue sclerae, a history of habitual subluxation and dislocation of bilateral elbows and left knee, and an episode of left ulna fracture, and was not aware of his being affected with OI type I. The woman underwent amniocentesis. Cytogenetic analysis revealed a karyotype of 46,XX. Molecular analysis of the amniocytes revealed a heterozygous deletion mutation of c.1064_1068delCTGGT in exon 17 of the COL1A1 gene. By genetic testing the husband was found to carry the same mutation. Despite counseling of favorable outcome for OI type I with the parents, the woman elected to terminate the pregnancy. Postnatal skeletal X-ray findings were consistent with OI type I. CONCLUSION Prenatal ultrasound diagnosis of mild forms of OI should include molecular analysis of type I collagen genes in both fetus and parents. Molecular genetic analysis of the family may incidentally identify a collagen gene mutation in the paucisymptomatic affected parent.
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Affiliation(s)
- Chih-Ping Chen
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan.
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Abstract
Osteogenesis imperfecta is a disorder of abnormality in collagen metabolism due to genetic defects, which causes fragility fracture in children. Fragility fracture of the neck of femur can be difficult to treat in adults. The difficulties increase exponentially in children. The challenge becomes more severe when there is an intramedullary rod in situ in the femoral shaft. It is a technically demanding work to fix fracture caused by osteogenesis imperfecta. There is hardly any published study on the difficult fixation of fracture neck of femur in osteogensis imperfecta. Therefore, we present two cases using cannulated screw fixation for this type of fracture for the benefit of other orthopaedic surgeons.
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van Dijk FS, Byers PH, Dalgleish R, Malfait F, Maugeri A, Rohrbach M, Symoens S, Sistermans EA, Pals G. EMQN best practice guidelines for the laboratory diagnosis of osteogenesis imperfecta. Eur J Hum Genet 2011; 20:11-9. [PMID: 21829228 PMCID: PMC3234509 DOI: 10.1038/ejhg.2011.141] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Osteogenesis imperfecta (OI) comprises a group of inherited disorders characterized by bone fragility and increased susceptibility to fractures. Historically, the laboratory confirmation of the diagnosis OI rested on cultured dermal fibroblasts to identify decreased or abnormal production of abnormal type I (pro)collagen molecules, measured by gel electrophoresis. With the discovery of COL1A1 and COL1A2 gene variants as a cause of OI, sequence analysis of these genes was added to the diagnostic process. Nowadays, OI is known to be genetically heterogeneous. About 90% of individuals with OI are heterozygous for causative variants in the COL1A1 and COL1A2 genes. The majority of remaining affected individuals have recessively inherited forms of OI with the causative variants in the more recently discovered genes CRTAP, FKBP10, LEPRE1,PLOD2, PPIB, SERPINF1, SERPINH1 and SP7, or in other yet undiscovered genes. These advances in the molecular genetic diagnosis of OI prompted us to develop new guidelines for molecular testing and reporting of results in which we take into account that testing is also used to ‘exclude' OI when there is suspicion of non-accidental injury. Diagnostic flow, methods and reporting scenarios were discussed during an international workshop with 17 clinicians and scientists from 11 countries and converged in these best practice guidelines for the laboratory diagnosis of OI.
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Affiliation(s)
- Fleur S van Dijk
- Department of Clinical Genetics, VU University Medical Centre, Amsterdam, The Netherlands.
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Abstract
PURPOSE To identify a molecular genetic cause in patients with a clinical diagnosis of osteogenesis imperfecta (OI) type I/IV. METHODS The authors performed multiplex ligation-dependent probe amplification analysis of the COL1A1 gene in a group of 106 index patients. RESULTS In four families with mild osteogenesis imperfecta and no other phenotypic abnormalities, a deletion of the complete COL1A1 gene on one allele was detected, a molecular finding that to our knowledge has not been described before, apart from a larger chromosomal deletion detected by fluorescent in situ hybridization encompassing the COL1A1 gene in a patient with mild osteogenesis imperfecta and other phenotypic abnormalities. Microarray analysis in three of the four families showed that it did not concern a founder mutation. CONCLUSION The clinical picture of complete COL1A1 allele deletions is a comparatively mild type of osteogenesis imperfecta. As such, multiplex ligation-dependent probe amplification analysis of the COL1A1 gene is a useful additional approach to defining the mutation in cases of suspected osteogenesis imperfecta type I with no detectable mutation.
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Abstract
UNLABELLED Intrauterine fracture is an extremely rare finding, but can occur as the result of maternal trauma, osteogenesis imperfecta (OI), or theoretically other metabolic/structural abnormalities. Increased clinical awareness of the diagnosis and optimal management of these cases can lead to more positive outcomes for the patient and her child. Blunt abdominal trauma late in gestation increases the risk of fetal skull fracture, while a known diagnosis of OI or other abnormalities leading to decreased fetal bone density creates concern for long bone fracture. Biochemical and genetic tests can aid in the prenatal diagnosis of OI, while ultrasound is the best overall imaging modality for identifying fetal fracture of any etiology. When fetal fracture is diagnosed radiologically, specific management is recommended to promote optimal outcomes for mother and fetus, with special consideration given to the mother with OI. With the exception of fetal fractures due to lethal conditions, cesarean delivery is recommended in most cases, especially when fetal or maternal well-being cannot be assured. When a patient presents with risk factors for intrauterine fracture, careful evaluation via thorough history-taking, ultrasonography of the entire fetal skeleton, and laboratory tests should be performed. Heightened awareness of intrauterine fracture allows better postpartum management, whether for simple fracture care or for long-term care of patients with OI or genetic/metabolic abnormalities. TARGET AUDIENCE Obstetricians & Gynecologist, Family Physicians. LEARNING OBJECTIVES After completion of this educational activity, the reader will be able to compare x-ray, ultrasound modalities and MRI and their utility in diagnosing fetal fracture. Formulate a differential diagnosis for fetal fracture. Propose a delivery plan for a patient whose fetus has a prenatally diagnosed fetal fracture.
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Chen CP, Su YN, Lin SP, Lin ML, Wang W. Favourable outcome in a pregnancy with concomitant maternal and fetal osteogenesis imperfecta associated with a novel COL1A2 mutation. Prenat Diagn 2007; 26:188-90. [PMID: 16470573 DOI: 10.1002/pd.1375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Venturi G, Tedeschi E, Mottes M, Valli M, Camilot M, Viglio S, Antoniazzi F, Tatò L. Osteogenesis imperfecta: clinical, biochemical and molecular findings. Clin Genet 2006; 70:131-9. [PMID: 16879195 DOI: 10.1111/j.1399-0004.2006.00646.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mutations in COL1A1 and COL1A2 genes, encoding the alpha1 and alpha2 chain of type I collagen, respectively, are responsible for the vast majority of cases of osteogenesis imperfecta (OI) (95% of patients with a definite clinical diagnosis). We have investigated 22 OI patients, representing a heterogeneous phenotypic range, at the biochemical and molecular level. A causal mutation in either type I collagen gene was identified in 20 of them: no recurrent mutation was found in unrelated subjects; 15 out of 20 mutations had not been reported previously. In two patients, we could not find any causative mutation in either type I collagen gene, after extensive genomic DNA sequencing. Failure of COL1A1/COL1A2 mutation screening may be due, in a few cases, to further clinical heterogeneity, i.e. additional non-collagenous disease loci are presumably involved in OI types beyond the traditional Sillence's classification.
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Affiliation(s)
- G Venturi
- Department of Mother and Child, Biology and Genetics, University of Verona, Verona, Italy
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