1
|
Ostertag-Hill CA, Delaplain PT, Lee T, Dickie BH. Updates on the Care of Cloacal Exstrophy. CHILDREN (BASEL, SWITZERLAND) 2024; 11:544. [PMID: 38790539 PMCID: PMC11120324 DOI: 10.3390/children11050544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/23/2024] [Accepted: 04/29/2024] [Indexed: 05/26/2024]
Abstract
Cloacal exstrophy is the most severe congenital anomaly of the exstrophy-epispadias complex and is characterized by gastrointestinal, genitourinary, neurospinal, and musculoskeletal malformations. Individualized surgical reconstruction by a multidisciplinary team is required for these complex patients. Not infrequently, patients need staged surgical procedures throughout childhood and adolescence. Following significant improvements in medical care and surgical reconstructive techniques, nearly all patients with cloacal exstrophy now survive, leading to an increased emphasis on quality of life. Increased attention is given to gender identity and the implications of reconstructive decisions. Long-term sequelae of cloacal exstrophy, including functional continence and sexual dysfunction, are recognized, and many patients require ongoing complex care into adulthood.
Collapse
Affiliation(s)
- Claire A. Ostertag-Hill
- Department of Surgery, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA; (C.A.O.-H.); (P.T.D.)
| | - Patrick T. Delaplain
- Department of Surgery, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA; (C.A.O.-H.); (P.T.D.)
| | - Ted Lee
- Department of Urology, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA;
| | - Belinda H. Dickie
- Department of Surgery, Boston Children’s Hospital, 300 Longwood Ave., Boston, MA 02115, USA; (C.A.O.-H.); (P.T.D.)
| |
Collapse
|
2
|
Assisted reproductive technologies and the risk of congenital urogenital tract malformations: A systematic review and meta-analysis. J Pediatr Urol 2021; 17:9-20. [PMID: 33223458 DOI: 10.1016/j.jpurol.2020.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/24/2020] [Accepted: 11/03/2020] [Indexed: 11/21/2022]
Abstract
A systematic review was conducted to evaluate the relationship between ART and the risk of urogenital tract malformations, especially hypospadias and cryptorchidism. Thirty-three papers were selected. Meta-analysis showed that ART was correlated with an increased risk of urogenital tract malformation in offspring (odds ratio (OR) = 1.61, 95% confidence interval (CI): 1.41-1.85), hypospadias (OR = 1.87, 95% CI: 1.47-2.40) and cryptorchidism (OR = 1.83, 95% CI: 1.54-2.18). Among offspring conceived by ART, multiple pregnancies appeared to result in a higher risk of urogenital tract malformation than singleton pregnancies (OR = 1.42, 95% CI: 0.99-2.04; P = 0.058). No significant difference in the risk of urogenital tract malformation was found between in vitro fertilization and intracytoplasmic sperm injection technologies. A sensitivity analysis showed that the above conclusions were relatively consistent. Conclusion: ART is correlated with an increased risk of urogenital tract malformations in offspring, especially hypospadias and cryptorchidism. Among ART offspring, multiple pregnancies may lead to a higher risk of urogenital tract malformations than singleton pregnancies, but more studies are needed for confirmation.
Collapse
|
3
|
Hoorsan H, Mirmiran P, Chaichian S, Moradi Y, Hoorsan R, Jesmi F. Congenital Malformations in Infants of Mothers Undergoing Assisted Reproductive Technologies: A Systematic Review and Meta-analysis Study. J Prev Med Public Health 2018; 50:347-360. [PMID: 29207452 PMCID: PMC5717326 DOI: 10.3961/jpmph.16.122] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 06/20/2017] [Indexed: 11/22/2022] Open
Abstract
Objectives This meta-analysis aimed to evaluate congenital malformations in infants conceived by assisted reproductive techniques (ART), compared with infants conceived spontaneously. Methods In this study, available resources searched to find relevant articles included PubMed, ScienceDirect, Scopus, Google Scholar, Cochrane, ProQuest, Iranmedex, Magiran, and Scientific Information Database. After extracting the necessary information from evaluated articles, meta-analysis on the articles’ data was performed using Stata version 11.2. Results In this study, from a total of 339 articles, extracted from the initial investigation, ultimately 30 articles were selected for meta-analysis that assessed the use of ART on the risk of congenital abnormalities and some birth complications on 5 470 181 infants (315 402 cases and 5 154 779 controls). The odds ratio (95% confidence interval [CI]) for low birth weight was 1.89 (95% CI, 1.36 to 2.62), preterm labor 1.79 (95% CI, 1.21 to 2.63), cardiac abnormalities 1.43 (95% CI, 1.27 to 1.62), central nervous system abnormalities 1.36 (95% CI, 1.10 to 1.70), urogenital system abnormalities 1.58 (95% CI, 1.28 to 1.94), musculoskeletal disorders 1.35 (95% CI, 1.12 to 1.64), and chromosomal abnormalities in infants conceived by ART was 1.14 (95% CI, 0.90 to 1.44), which were all statistically significant, except chromosomal abnormalities. Conclusions The risk of congenital abnormalities and some birth complications were significantly higher in ART than normal conception, while chromosomal abnormalities were not; therefore, the application of ART should be selected individually for patients by detailed assessment to reduce such risks in the population.
Collapse
Affiliation(s)
- Hayedeh Hoorsan
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| | - Parvin Mirmiran
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| | - Shahla Chaichian
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| | - Yousef Moradi
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| | - Roza Hoorsan
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| | - Fatemeh Jesmi
- Department of Nursing and Midwifery, Islamic Azad University Sanandaj Branch, Sanandaj, Iran
| |
Collapse
|
4
|
Keppler-Noreuil KM, Conway KM, Shen D, Rhoads AJ, Carey JC, Romitti PA. Clinical and risk factor analysis of cloacal defects in the National Birth Defects Prevention Study. Am J Med Genet A 2017; 173:2873-2885. [PMID: 28960693 PMCID: PMC5650529 DOI: 10.1002/ajmg.a.38469] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 08/02/2017] [Accepted: 08/12/2017] [Indexed: 12/20/2022]
Abstract
Cloacal exstrophy (CE) and persistent cloaca (PC) (alternatively termed urorectal septum malformation sequence [URSMS]), represent two major cloacal defects (CDs). Clinical characteristics and risk factors often are studied for both defects combined, rather than exploring if these defects have different etiologies. We enumerated clinical features for 47 CE and 54 PC (inclusive of URSMS) cases from the National Birth Defects Prevention Study. Thirty-three CE cases were classified as isolated and 14 as multiple (presence of unassociated major defects); respective totals for PC cases were 26 and 28. We compared selected child and maternal characteristics between 11,829 non-malformed controls and CE and PC cases using chi-square or Fisher's exact tests. Compared to controls, CE and PC cases were statistically more likely (p < 0.05) to be preterm; CE cases were more likely to be multiple births. We conducted logistic regression analysis to estimate odds ratios and 95% confidence intervals for any CD, CE, and PC with selected self-reported maternal prepregnancy and periconceptional (one month prior to 3 months following conception) exposures. In crude and adjusted analyses, we observed significant positive associations for any CD, CE, and PC with use of any fertility medication or assisted reproductive technology procedure. Significant positive associations observed only in crude analyses were any CD with maternal obesity or use of progesterone, any CD and CE with any x-ray, and any CD and PC with use of folate antagonist medications. Our findings provide some of the first insights into potential differing etiologies for CE and PC.
Collapse
MESH Headings
- Abnormalities, Multiple/diagnosis
- Abnormalities, Multiple/epidemiology
- Abnormalities, Multiple/physiopathology
- Adult
- Anus, Imperforate/diagnosis
- Anus, Imperforate/epidemiology
- Anus, Imperforate/physiopathology
- Bladder Exstrophy/diagnosis
- Bladder Exstrophy/epidemiology
- Bladder Exstrophy/physiopathology
- Cloaca/physiopathology
- Congenital Abnormalities/diagnosis
- Congenital Abnormalities/epidemiology
- Congenital Abnormalities/physiopathology
- Female
- Hernia, Umbilical/diagnosis
- Hernia, Umbilical/epidemiology
- Hernia, Umbilical/physiopathology
- Humans
- Infant
- Infant, Newborn
- Male
- Pregnancy
- Risk Factors
- Scoliosis/diagnosis
- Scoliosis/epidemiology
- Scoliosis/physiopathology
- Urogenital Abnormalities/diagnosis
- Urogenital Abnormalities/epidemiology
- Urogenital Abnormalities/physiopathology
Collapse
Affiliation(s)
- Kim M. Keppler-Noreuil
- Medical Genomics & Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - Kristin M. Conway
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
| | - Dereck Shen
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
| | - Anthony J. Rhoads
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
| | - John C. Carey
- Division of Medical Genetics, Department of Pediatrics, University of Utah Health Sciences Center, Salt Lake City, Utah
| | - Paul A. Romitti
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City, Iowa
| | | |
Collapse
|
5
|
Abstract
With the help of the media, there is growing public awareness for the problems associated with rare diseases and their impact on the lives of those affected and their families. Bladder exstrophy-epispadias complex (BEEC) is also a part of the group of rare diseases within the urological field. The German network CURE-Net was founded in 2009 to systematically collect data regarding the epidemiological and molecular causes, and clinical and psychosocial effects of congenital urorectal malformations. With the help of self-help groups a national registry could be established for systematic data retrieval. This research can help to improve existing medical care and follow-up for affected individuals with BEEC.
Collapse
|
6
|
Reinfeldt Engberg G, Mantel Ä, Fossum M, Nordenskjöld A. Maternal and fetal risk factors for bladder exstrophy: A nationwide Swedish case-control study. J Pediatr Urol 2016; 12:304.e1-304.e7. [PMID: 27499280 DOI: 10.1016/j.jpurol.2016.05.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/31/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Bladder exstrophy is a rare, congenital, complex malformation where the underlying cause is largely unknown. Both environmental and genetic mechanisms are thought to be involved. There are divergent results concerning the prevalence, birth descriptive data, and potential maternal risk factors for bladder exstrophy. Few previous studies have reflected nationwide populations, population registers, or spanned a longer period of time. OBJECTIVE To describe and assess bladder exstrophy and the potential maternal risk factors, for a time period of four decades, by conducting a nationwide register study of bladder exstrophy in Sweden. METHODS A matched-design, case-control, linkage-analysis study nested within the entire pool of live births in Sweden between 1973 and 2011 was performed. Cases with bladder exstrophy were identified using nationwide population-based birth and health registers. Inclusion criteria were people born in Sweden with the classification of bladder exstrophy according to the ICD coding system. Cases were matched with five controls per patient, based on birth year and sex. Prevalence was assessed and birth descriptive data were compiled. Potential maternal risk factors were obtained from medical birth registers of cases and assessed using conditional and multivariate logistic regression models to obtain odds ratios as a measure of the relative risk. Classification of the diagnosis in the registers constituted a possible limitation for determining the correct study population, which demanded strict validation and inclusion criteria. All data were collected prospectively, thereby avoiding potential recall bias. RESULTS The prevalence was calculated to be approximately 3 per 100,000 live births, with a male-to-female ratio of 1.14:1. In 92.5% of the cases, bladder exstrophy was an isolated malformation without associated major malformations. However, 41% had had surgery for congenital inguinal hernia and 11% of the male subjects had been operated on for cryptorchidism. A significantly higher proportion of cases had a birth weight <1500 g compared with controls, but other characteristics were comparable with controls. High maternal age was the only significant potential associated maternal risk factor. CONCLUSIONS One hundred and twenty children born with bladder exstrophy in Sweden during the last four decades were identified; this resulted in prevalence in Sweden of 3 per 100,000. The prevalence was stable over time and the sex ratio was equal. Birth characteristics were comparable to controls, and bladder exstrophy generally occurred as an isolated malformation without major associated malformations. Advanced maternal age was the only significant potential maternal risk factor.
Collapse
Affiliation(s)
- G Reinfeldt Engberg
- Department of Women's and Children's Health and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Ä Mantel
- Clinical Epidemiology Unit, Department of Medicine, Solna (MedS), K2, Karolinska Institutet, Stockholm, Sweden
| | - M Fossum
- Department of Women's and Children's Health and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - A Nordenskjöld
- Department of Women's and Children's Health and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Pediatric Surgery, Section of Urology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden.
| |
Collapse
|
7
|
Kathopoulis N, Thomakos N, Mole I, Papaspirou I, Ntai S, Rodolakis A. Anterior pelvic exenteration for exstrophic bladder adenocarcinoma: Case report and review. Int J Surg Case Rep 2016; 25:13-5. [PMID: 27288750 PMCID: PMC4972129 DOI: 10.1016/j.ijscr.2016.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 05/04/2016] [Accepted: 05/17/2016] [Indexed: 11/24/2022] Open
Abstract
Carcinoma of the exstrophic bladder is an extremely rare condition. We present a case of carcinoma in unreconstructed bladder exstrophy in a patient of 53 years old. Anterior pelvic exenteration is an alternative surgical intervention for this situation in postmenopausal women.
Introduction Bladder exstrophy is a very rare congenital anomaly and is associated with an increased incidence of bladder cancer. Most patients undergo reconstructive operations during childhood. Presentation of case A 53 year-old woman was diagnosed with enteric type mucinous adenocarcinoma of the unreconstructed exstrophic bladder. Preoperative examination revealed no primary site in the gastrointestinal system. The patient underwent an anterior pelvic exenteration with bilateral ureterostomy and repairing of the anterior abdominal wall defect with a mesh. Discussion Carcinoma of the exstrophic bladder is a very rare entity. An overall number of 118 cases of cancer in unreconstructed bladder have been reported in the literature since 1895 with adenocarcinomas consisting of 90–91% and squamous cell carcinomas 8.5%. Mechanical irritation on the bladder mucosa, embryologic origin and urine carcinogens are some o the theories of cancerous metaplasia. Conclusion This is the first case of bladder exstrophy cancer reported that was submitted to anterior pelvic exenteration. We propose this surgical procedure as an appropriate alternative in postmenopausal women and cancer of the unreconstructed bladder exstrophy.
Collapse
Affiliation(s)
- Nikolaos Kathopoulis
- Department of Obstetrics and Gynecology, University of Athens School of Medicine, Alexandra Hospital, Athens, Greece.
| | - Nikolaos Thomakos
- Department of Obstetrics and Gynecology, University of Athens School of Medicine, Alexandra Hospital, Athens, Greece
| | - Ioanna Mole
- Department of Obstetrics and Gynecology, University of Athens School of Medicine, Alexandra Hospital, Athens, Greece
| | | | - Sparti Ntai
- Department of Radiology, Alexandra Hospital, Athens, Greece
| | - Alexandros Rodolakis
- Department of Obstetrics and Gynecology, University of Athens School of Medicine, Alexandra Hospital, Athens, Greece
| |
Collapse
|
8
|
Reutter H, Keppler-Noreuil K, E Keegan C, Thiele H, Yamada G, Ludwig M. Genetics of Bladder-Exstrophy-Epispadias Complex (BEEC): Systematic Elucidation of Mendelian and Multifactorial Phenotypes. Curr Genomics 2016; 17:4-13. [PMID: 27013921 PMCID: PMC4780475 DOI: 10.2174/1389202916666151014221806] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 06/25/2015] [Accepted: 06/30/2015] [Indexed: 12/15/2022] Open
Abstract
The Bladder-Exstrophy-Epispadias Complex (BEEC) represents the severe end of the uro-rectal malformation spectrum, and has a profound impact on continence, and on sexual and renal function. While previous reports of familial occurrence, in-creased recurrence among first-degree relatives, high concordance rates among monozygotic twins, and chromosomal aberra-tions were suggestive of causative genetic factors, the recent identification of copy number variations (CNVs), susceptibility regions and genes through the systematic application of array based analysis, candidate gene and genome-wide association studies (GWAS) provide strong evidence. These findings in human BEEC cohorts are underscored by the recent description of BEEC(-like) murine knock-out models. Here, we discuss the current knowledge of the potential molecular mechanisms, mediating abnormal uro-rectal development leading to the BEEC, demonstrating the importance of ISL1-pathway in human and mouse and propose SLC20A1 and CELSR3 as the first BEEC candidate genes, identified through systematic whole-exome sequencing (WES) in BEEC patients.
Collapse
Affiliation(s)
- Heiko Reutter
- Department of Neonatology and Pediatric Intensive Care; Institute of Human Genetics, University of Bonn, Bonn, Germany
| | - Kim Keppler-Noreuil
- Human Development Section, National Human Genome Research Institute, Bethesda, MD, USA
| | - Catherine E Keegan
- Department of Pediatric Genetics, University of Michigan Medical Center, Michigan, USA
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Gen Yamada
- Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University, Japan
| | - Michael Ludwig
- Department of Clinical Chemistry and Clinical Pharmacology, University of Bonn, Bonn, Germany
| |
Collapse
|
9
|
Stuhldreher PP, Inouye B, Gearhart JP. Exstrophy-Epispadias Complex. CURRENT BLADDER DYSFUNCTION REPORTS 2015. [DOI: 10.1007/s11884-015-0306-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Massaro PA, MacLellan DL, Anderson PA, Romao RLP. Does intracytoplasmic sperm injection pose an increased risk of genitourinary congenital malformations in offspring compared to in vitro fertilization? A systematic review and meta-analysis. J Urol 2015; 193:1837-42. [PMID: 25813561 DOI: 10.1016/j.juro.2014.10.113] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2014] [Indexed: 11/25/2022]
Abstract
PURPOSE We systematically reviewed and performed a meta-analysis of the genitourinary congenital malformation rate after conception by intracytoplasmic sperm injection compared to in vitro fertilization. MATERIALS AND METHODS We systematically reviewed studies to compare perinatal outcomes between children conceived by intracytoplasmic sperm injection vs in vitro fertilization. Studies showing genitourinary congenital malformation rates were included. We assessed the risk of bias, focusing on the quality of genitourinary congenital malformation reporting and analysis targeted at singletons. Meta-analysis was done using a random effects model for 3 outcomes, including overall genitourinary congenital malformation, hypospadias and cryptorchidism. Sensitivity analysis was also performed in only studies at low risk for bias. RESULTS The initial search yielded 1,482 articles. We performed a full text review of 111 of these studies, of which 22 met inclusion criteria for systematic review. Meta-analysis of intracytoplasmic sperm injection and in vitro fertilization in 12,270 and 24,240 cases, respectively, revealed that intracytoplasmic sperm injection was associated with a significantly higher rate of overall genitourinary congenital malformation compared to in vitro fertilization (OR 1.27, 95% CI 1.02-1.59, p = 0.04). However, when including only 4 studies at low risk for bias with a total of 7,727 and 14,308 intracytoplasmic sperm injection and in vitro fertilization cases, respectively, the difference was not significant (OR 1.28, 95% CI 1.00-1.64, p = 0.05). There was no statistically significant difference in the rate of hypospadias (OR 1.21, 95% CI 0.87-1.69) or cryptorchidism (OR 1.39, 95% CI 0.97-2.00) between males conceived by intracytoplasmic sperm injection vs in vitro fertilization. On all analyses there was no significant statistical heterogeneity between studies (I(2) = 0). CONCLUSIONS Intracytoplasmic sperm injection is associated with a slightly higher risk of genitourinary malformation in offspring than in vitro fertilization. However, when only higher quality studies were analyzed, the difference was not significant. The hypospadias and cryptorchidism rates in offspring are similar for the 2 conception methods.
Collapse
Affiliation(s)
- Peter A Massaro
- Division of Urology, Izaak Walton Killam Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Dawn Lee MacLellan
- Division of Urology, Izaak Walton Killam Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Peter A Anderson
- Division of Urology, Izaak Walton Killam Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Rodrigo L P Romao
- Division of Urology, Izaak Walton Killam Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada.
| |
Collapse
|
11
|
Darling T, Mahfuz I, White SJ, Cheng W. No TAP63 promoter mutation is detected in bladder exstrophy-epispadias complex patients. J Pediatr Surg 2013; 48:2393-400. [PMID: 24314177 DOI: 10.1016/j.jpedsurg.2013.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 08/26/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND/PURPOSE Bladder exstrophy-epispadias complex (BEEC) is thought to have a genetic component in its pathogenesis. Previously we found that p63(-/-) mice show increased ventral apoptosis and develop a BEEC phenotype. Down-regulation of the anti-apoptotic ΔNP63 and an up-regulation of pro-apoptotic TAP63 isoforms have been demonstrated in BEEC patient bladder tissues. We have previously shown that insertion/deletion polymorphisms of the ΔNp63 promoter are associated with an increased risk of BEEC. In this study, we specifically examined the TAP63 promoter to see if any sequence changes might lead to up-regulation of TAP63 and exaggerated apoptosis in BEEC patients. METHODS i) Bioinformatic analysis of the TAP63 promoter was performed to identify putative regulatory regions. ii) High-resolution Melt and Sanger sequencing was used to screen targeted regions in 112 BEEC patient DNA samples for potential sequence variants. iii) Sequence variation was analysed for significance against normal population frequency data. RESULTS i) We identified multiple epigenetic markers of transcriptional regulation within highly conserved areas of the TAP63 promoter sequence. ii) Of the 112 buccal swab DNA samples, adequate and successful screening ranged between 48 and 67 for each region. iii) No novel sequence variation or mutation was uncovered. iv) Two known SNPs were identified. However, allele frequency analysis was not statistically significant. CONCLUSION Our data do not associate genetic variation within the TAP63 promoter region with an increased risk of BEEC. Our data so far suggests that only ΔNP63 promoter aberration is involved in BEEC pathogenesis.
Collapse
Affiliation(s)
- Tom Darling
- Monash Institute of Medical Research, Monash University, Melbourne, Australia
| | | | | | | |
Collapse
|
12
|
VACTERL association with hydrocephalus in a fetus conceived by in vitro fertilization and embryo transfer. Taiwan J Obstet Gynecol 2013; 52:575-9. [DOI: 10.1016/j.tjog.2013.10.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Accepted: 05/04/2013] [Indexed: 11/18/2022] Open
|
13
|
Ritchey ML. This Month in Pediatric Urology. J Urol 2013. [DOI: 10.1016/j.juro.2013.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|