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Murcia-Barba A, Serra-Aguado CI, Serrano-Crehuet T, Fernández-Salesa N. Preputial urethrostomy in a cat with suspected glandular hypospadias: case report and literature review. JFMS Open Rep 2024; 10:20551169241272195. [PMID: 39224536 PMCID: PMC11367610 DOI: 10.1177/20551169241272195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024] Open
Abstract
Case summary An 11-year-old neutered male Turkish Angora cat was referred for obstructive feline lower urinary tract disease (FLUTD). On physical examination, the penis was curved at the tip and had a smaller than normal urethral opening proximal to the end, consistent with singular glandular hypospadias with a dorsal penile curvature. Because of its recurrent obstructive FLUTD history and inability to catheterise the urethra, a preputial urethrostomy (PRU) was performed. The PRU resolved the clinical signs with no clinical recurrence and no short- or long-term complications. Relevance and novel information To the authors' knowledge, this is the first description of singular glandular hypospadias in a cat. In addition, this is the first time feline hypospadias has been reported to occur with obstructive FLUTD and to be treated by preputial urethrostomy.
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Affiliation(s)
- Aina Murcia-Barba
- Hospital Veterinario UCV, Departamento Medicina y Cirugía Animal, Facultad de Veterinaria y Ciencias Experimentales, Universidad Católica de Valencia San Vicente Mártir, Spain
| | - Claudio Iván Serra-Aguado
- Hospital Veterinario UCV, Departamento Medicina y Cirugía Animal, Facultad de Veterinaria y Ciencias Experimentales, Universidad Católica de Valencia San Vicente Mártir, Spain
| | - Tomás Serrano-Crehuet
- Hospital Veterinario UCV, Departamento Medicina y Cirugía Animal, Facultad de Veterinaria y Ciencias Experimentales, Universidad Católica de Valencia San Vicente Mártir, Spain
| | - Núria Fernández-Salesa
- Hospital Veterinario UCV, Departamento Medicina y Cirugía Animal, Facultad de Veterinaria y Ciencias Experimentales, Universidad Católica de Valencia San Vicente Mártir, Spain
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Estevam MV, Toniollo GH, Apparicio M. The most common congenital malformations in dogs: Literature review and practical guide. Res Vet Sci 2024; 171:105230. [PMID: 38492280 DOI: 10.1016/j.rvsc.2024.105230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
Congenital malformations can affect almost 7% of canine newborns. The increase of commercial dog breeding and inbreeding used to maintain the striking characteristics of each breed, the appearance of malformations has become increasingly common, especially in brachycephalic dogs. The causes are diverse, and include genetic, nutritional, iatrogenic, and infectious factors, often making it difficult to establish a cause-consequence relationship. The high mortality associated with malformations comes not only from the fact that some are incompatible with life, but also because even if many undergo surgical treatment or correction, they require specific management, monitoring, and clinical treatment for an indefinite period of time. The most common malformations such as cleft lip and palate, hydrocephalus and anasarca have been studied for a long time, and it is currently known that brachycephalic dogs have a greater predisposition, however, for other less common conditions as gastroschisis and hypospadias, there is only a few case reports. The appearance of congenital defects in a litter leads to financial losses for the breeder, emotional losses for the owner and the veterinarian and harms the well-being of that individual. For this reason, the aim of this review article is to gather relevant information on the characteristics, diagnosis, and management of the main malformations in puppies. It is essential that the veterinarian is prepared to diagnose and treat these conditions, reducing negative impacts on animals and owners.
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Affiliation(s)
- Marina Vilela Estevam
- Department of Pathology, Reproduction and One Health, São Paulo State University - FCAV Unesp, Jaboticabal, SP, Brazil
| | - Gilson Helio Toniollo
- Department of Pathology, Reproduction and One Health, São Paulo State University - FCAV Unesp, Jaboticabal, SP, Brazil
| | - Maricy Apparicio
- Department of Veterinary Surgery and Animal Reproduction, São Paulo State University - FMVZ Unesp, Botucatu, SP, Brazil.
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3
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Marc S, Mizeranschi AE, Paul C, Otavă G, Savici J, Sicoe B, Torda I, Huțu I, Mircu C, Ilie DE, Carabaș M, Boldura OM. Simultaneous Occurrence of Hypospadias and Bilateral Cleft Lip and Jaw in a Crossbred Calf: Clinical, Computer Tomographic, and Genomic Characterization. Animals (Basel) 2023; 13:ani13101709. [PMID: 37238140 DOI: 10.3390/ani13101709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/17/2023] [Accepted: 05/20/2023] [Indexed: 05/28/2023] Open
Abstract
Congenital abnormalities in animals, including abnormalities of the cleft lip and jaw and hypospadias have been reported in all domesticated species. They are a major concern for breeders due to the increased economic loss they entail. In this article, we described a congenital bilateral cheilognathoschisis (cleft lip and jaw) with campylognathia in association with penile hypospadias and preputial hypoplasia with failure of preputial fusion in a Bos taurus crossbred Piedmontese × Wagyu calf. Clinical examination, computed tomography, and whole genome sequencing were performed to describe and identify a possible cause of the abnormalities. Clinical examination revealed a bilateral cheilognathoschisis of approximately 4 cm in length and 3 cm in width in the widest part, with computer tomography analyses confirming the bilateral absence of the processus nasalis of the incisive bone and the lateral deviation of the processus palatinus towards the left side. Genomic data analyses identified 13 mutations with a high impact on the products of the following overlapped genes: ACVR1, ADGRA2, BHMT2, BMPR1B, CCDC8, CDH1, EGF, F13A1, GSTP1, IRF6, MMP14, MYBPHL, and PHC2 with ADGRA2, EGF, F13A1, GSTP1, and IRF6 having mutations in a homozygous state. The whole genome investigation indicates the involvement of multiple genes in the birth defects observed in this case.
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Affiliation(s)
- Simona Marc
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
| | - Alexandru Eugeniu Mizeranschi
- The Molecular Research Department, Research and Development Station for Bovine Arad, Bodrogului Street, 32, 310059 Arad, Romania
| | - Cristina Paul
- Department of Applied Chemistry and Engineering of Organic and Natural Compounds, Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Gabriel Otavă
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
| | - Jelena Savici
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
| | - Bogdan Sicoe
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
| | - Iuliu Torda
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
| | - Ioan Huțu
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
| | - Călin Mircu
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
| | - Daniela Elena Ilie
- The Molecular Research Department, Research and Development Station for Bovine Arad, Bodrogului Street, 32, 310059 Arad, Romania
| | - Mihai Carabaș
- Faculty of Automatic Control and Computer Science, Politehnica University of Bucharest, Splaiul Independenţei 313, 060042 Bucharest, Romania
| | - Oana Maria Boldura
- Faculty of Veterinary Medicine, University of Life Sciences ''King Mihai I'' from Timisoara, Calea Aradului 119, 300645 Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering, University of Life Sciences ''King Mihai I'' from Timisoara, 300645 Timișoara, Romania
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4
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Nowacka-Woszuk J, Stachowiak M, Szczerbal I, Szydlowski M, Szabelska-Beresewicz A, Zyprych-Walczak J, Krzeminska P, Nowak T, Lukomska A, Ligocka Z, Biezynski J, Dzimira S, Nizanski W, Switonski M. Whole genome sequencing identifies a missense polymorphism in PADI6 associated with testicular/ovotesticular XX disorder of sex development in dogs. Genomics 2022; 114:110389. [PMID: 35597501 DOI: 10.1016/j.ygeno.2022.110389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/07/2022] [Accepted: 05/11/2022] [Indexed: 12/17/2022]
Abstract
Disorders of sex development (DSDs) are congenital malformations defined as discrepancies between sex chromosomes and phenotypical sex. Testicular or ovotesticular XX DSDs are frequently observed in female dogs, while monogenic XY DSDs are less frequent. Here, we applied whole genome sequencing (WGS) to search for causative mutations in XX DSD females in French Bulldogs (FB) and American Staffordshire Terries (AST) and in XY DSD Yorkshire Terries (YT). The WGS results were validated by Sanger sequencing and ddPCR. It was shown that a missense SNP of the PADI6 gene, is significantly associated with the XX DSD (SRY-negative) phenotype in AST (P = 0.0051) and FB (P = 0.0306). On the contrary, we did not find any associated variant with XY DSD in YTs. Our study suggests that the genetic background of the XX DSD may be more complex and breed-specific.
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Affiliation(s)
- Joanna Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Monika Stachowiak
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Izabela Szczerbal
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Maciej Szydlowski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Alicja Szabelska-Beresewicz
- Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Joanna Zyprych-Walczak
- Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
| | - Paulina Krzeminska
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Tomasz Nowak
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland
| | - Anna Lukomska
- Department of Preclinical Sciences and Infectious Diseases, Poznan University of Life Sciences, Wolynska 35, 60-637 Poznan, Poland
| | - Zuzanna Ligocka
- Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland
| | - Janusz Biezynski
- Department of Surgery, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 51, 50-366 Wroclaw, Poland
| | - Stanislaw Dzimira
- Department of Pathology, Wroclaw University of Environmental and Life Sciences, C. K. Norwida 31, 50-375 Wroclaw, Poland
| | - Wojciech Nizanski
- Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland
| | - Marek Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637 Poznan, Poland.
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5
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Walter B, Flock U, Leykam C, Otzdorff C, Simmet K, Hecht W, Kempker L, Aupperle-Lellbach H, Reese S. Serum anti-Müllerian hormone concentration as a diagnostic tool to identify testicular tissue in canine disorders of sexual development. Domest Anim Endocrinol 2022; 78:106654. [PMID: 34509739 DOI: 10.1016/j.domaniend.2021.106654] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/03/2022]
Abstract
Disorders of sexual development (DSD) may have their origin in alterations of the chromosomal, gonadal or phenotypic sex. Affected animals are usually presented because of ambiguous external genitalia, seldom because of reproductive disorders. Anti-Müllerian hormone (AMH) is secreted in the gonads with higher amounts in males than in females and can be used to identify gonadal tissue in sexually normally developed dogs. The aim of this study was to examine the diagnostic potential of serum AMH to identify testicular tissue in 11 dogs with DSD. The diagnostic procedures applied were: determination of the phenotypic sex (n = 11), genital ultrasound (n = 9), determination of the SRY gene (n = 11), karyogram (n = 6), gonadectomy (n = 11), pathohistology of the gonads (n = 10), serum AMH measurement (n = 11). 39 female dogs described in a previous study and 19 male dogs with a normal spermiogram served as controls for the AMH serum concentrations in sexually intact dogs. The 11 dogs with DSD were classified as 7 XY DSD and 4 XX DSD. Presumptive testes were obtained in 10 dogs and 1 dog had an ovotestis combined with a testis. Mean serum AMH values of the dogs with DSD were significantly higher (P < 0.001) than in male and female controls. The upper limit of the AMH test (≥ 23ng/ml) was reached in 6 dogs. High AMH concentrations have been described previously in cryptorchid dogs. 1 dog with a male phenotype and 2 with a female phenotype had AMH values within the range of the male controls, although all of them had cryptorchid testes. A Poodle, in which epididymis were identified but no definitive gonads, had an AMH concentration of the lower limit of the test (≤ 0.01 ng/ml), comparable to previously described castrated dogs. This study indicates that serum AMH levels are a useful diagnostic tool to identify testicular tissue in dogs with DSD and suggests the possible use of AMH to diagnose testicular dysgenesis.
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Affiliation(s)
- B Walter
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany.
| | - U Flock
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - C Leykam
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - C Otzdorff
- Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
| | - K Simmet
- Chair for Molecular Animal Breeding and Biotechnology, LMU Munich, Oberschleißheim, Germany
| | - W Hecht
- Institute of Veterinary Pathology, Justus-Liebig-University, Giessen, Germany
| | - L Kempker
- Laboklin GmbH & Co.KG, Bad Kissingen, Germany
| | | | - S Reese
- Chair of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany
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6
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Krzeminska P, Nowacka-Woszuk J, Switonski M. Copy number variation of the SRY gene showed an association with disorders of sex development in Yorkshire Terrier dogs. Anim Genet 2021; 53:152-155. [PMID: 34664728 DOI: 10.1111/age.13147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2021] [Indexed: 11/29/2022]
Abstract
The molecular background of disorders of sex development (DSD) in dogs is poorly understood. Several copies of the SRY genes have been reported in the dog genome. We used droplet digital PCR with the aim of determining variability in SRY copy number and its association with DSD in dogs. Altogether 19 DSD male dogs (XY DSD) of 10 breeds and 87 control dogs of eight breeds were analyzed. Moreover, we performed a comparative analysis of SRY copy number in other canids: wolves (3), red foxes (16), and Chinese raccoon dogs (10). We found that the modal number of SRY copies in dogs, wolves, red foxes, and Chinese raccoon dogs was 3, 3, 1, and 3 respectively. Variability of copy number was only observed in Yorkshire Terriers (two or three copies) and red foxes (one or two copies). An analysis of six DSD Yorkshire Terriers and 38 control males of this breed showed that 50% of the DSD dogs had two copies, while the incidence of this variant was significantly lower in the control dogs (10.5%). Searching for the copy number of the coding and 5'-flanking fragments revealed full concordance with the copy number. These fragments were also sequenced in DSD (19) and control (24) dogs, and no DNA variants were found. We conclude that, in the dog, two or three functional copies of the SRY gene are present, and a smaller number of copies showed an association with the risk of DSD phenotype in Yorkshire Terriers.
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Affiliation(s)
- P Krzeminska
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, Poznan, 60-637, Poland
| | - J Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, Poznan, 60-637, Poland
| | - M Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, Poznan, 60-637, Poland
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Henry P, Schiavo L, Owen L, McCallum KE. Urinary incontinence secondary to a suspected congenital urethral deformity in a kitten. JFMS Open Rep 2021; 7:20551169211045642. [PMID: 34616561 PMCID: PMC8488525 DOI: 10.1177/20551169211045642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Case summary A 5-month-old entire male domestic shorthair kitten was referred for investigation of a month-long history of urinary incontinence. Clinical examination, baseline blood work and imaging (plain radiography and ultrasonography) were unremarkable. Urinalysis documented a urinary tract infection and a retrograde urethrocystogram revealed an outpouching of the pelvic urethra. Surgical exploration revealed the absence of the dorsal portion of the urethral wall in this section of pelvic urethra, replaced by an epithelial lined expanded ‘pouch’. The ventral aspect of the urethra appeared grossly normal. A modified perineal urethrostomy was performed to create an anastomosis of the urethral pouch to the skin of the perineum alongside conventional castration. The kitten made a full recovery and the incontinence resolved within 48 h. A congenital urethral diverticulum and secondary urinary tract infection were deemed the most likely aetiology in this case. Relevance and novel information Urethral diverticuli are a rare condition in veterinary medicine. To our knowledge, it has only been reported in two dogs and presumptively in one cat, all of which made a complete recovery after surgical intervention. The present case reports an unusual urethral deformity as a potential differential diagnosis for lower urinary tract signs in a young cat.
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Affiliation(s)
- Perrine Henry
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
| | - Luca Schiavo
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
| | - Laura Owen
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
| | - Katie E McCallum
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
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Chang J, Wang S, Zheng Z. Etiology of Hypospadias: A Comparative Review of Genetic Factors and Developmental Processes Between Human and Animal Models. Res Rep Urol 2021; 12:673-686. [PMID: 33381468 PMCID: PMC7769141 DOI: 10.2147/rru.s276141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 09/28/2020] [Indexed: 11/23/2022] Open
Abstract
Hypospadias is a congenital anomaly of the penis with an occurrence of approximately 1 in 200 boys, but the etiology of the majority of hypospadias has remained unknown. Numerous genes have been reported as having variants in hypospadias patients, and many studies on genetic deletion of key genes in mouse genital development have also been published. Until now, no comparative analysis in the genes related literature has been reported. The basic knowledge of penile development and hypospadias is mainly obtained from animal model studies. Understanding of the differences and similarities between human and animal models is crucial for studies of hypospadias. In this review, mutations and polymorphisms of hypospadias-related genes have been compared between humans and mice, and differential genotype–phenotype relationships of certain genes between humans and mice have been discussed using the data available in PubMed and MGI online databases, and our analysis only revealed mutations in seven out of 43 human hypospadias related genes which have been reported to show similar phenotypes in mutant mice. The differences and similarities in the processes of penile development and hypospadias malformation among human and commonly used animal models suggest that the guinea pig may be a good model to study the mechanism of human penile development and etiology of hypospadias.
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Affiliation(s)
- Jun Chang
- Department of Physiology, School of Medicine, Southern Illinois University Carbondale, Carbondale, IL 62901, USA.,School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, People's Republic of China
| | - Shanshan Wang
- Department of Physiology, School of Medicine, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
| | - Zhengui Zheng
- Department of Physiology, School of Medicine, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
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9
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Szczerbal I, Nowacka-Woszuk J, Nizanski W, Dzimira S, Ligocka Z, Jastrzebska A, Kabala B, Biernacik M, Przadka P, Switonski M. Disorders of Sex Development Are an Emerging Problem in French Bulldogs: A Description of Six New Cases and a Review of the Literature. Sex Dev 2020; 13:205-211. [PMID: 32203972 DOI: 10.1159/000506582] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2020] [Indexed: 01/06/2023] Open
Abstract
Disorders of sex development (DSD) are a well-known cause of sterility and reduced fertility in dogs. Here, we report on 6 new cases of DSD in French bulldogs diagnosed by us within the last year. The animals were phenotypical females who underwent detailed diagnosis due to the presence of an enlarged clitoris or a penis-like structure with atypically located urethral orifice (hypospadias). A female karyotype (78,XX) and lack of Y-linked genes (SRY and ZFY) were observed in 5 cases, which were classified as XX (SRY-negative) DSD. Gonads histology could be performed in 4 XX DSD cases: testicular tissue was observed in 3 cases and ovotesticular tissue in 1 case. In the last case, leukocyte chimerism (XX/XY) was detected alongside an ovotestis with epididymis and fallopian tubes. This case was classified as freemartinism. Our study and a literature review showed that heritable XX (SRY-negative) DSD is quite common in French bulldogs, but spontaneously developed freemartinism can be also diagnosed. In conclusion, we postulate that the description of the sexual phenotype of DSD females (enlarged clitoris and presence of testicular tissue) does not distinguish between hereditary XX DSD and nonhereditary freemartinism. Cytogenetic and molecular analyses are thus necessary to correctly diagnose such cases. This is especially important for the French bulldog breed, as a rapid increase in its population could spread hereditary DSD.
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10
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Iannuzzi A, Braun M, Genualdo V, Perucatti A, Reinartz S, Proios I, Heppelmann M, Rehage J, Hülskötter K, Beineke A, Metzger J, Distl O. Clinical, cytogenetic and molecular genetic characterization of a tandem fusion translocation in a male Holstein cattle with congenital hypospadias and a ventricular septal defect. PLoS One 2020; 15:e0227117. [PMID: 31923267 PMCID: PMC6953810 DOI: 10.1371/journal.pone.0227117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/11/2019] [Indexed: 02/06/2023] Open
Abstract
Hypospadias, disorder of sex development (DSD), is a sporadic congenital abnormality of the genital region in male ruminants, which is characterized by a non-fused urethra during fetal development. Detailed clinical examination classified the hypospadias phenotype of a male Holstein calf studied here as the perineal type. In combined use of cytogenetic analysis and whole genome sequencing, a non-mosaic, pseudo-monosomy 59, XY + tan(18;27) was detected. This chromosomal aberration had its origin in a tandem fusion translocation of the bovine autosomes (BTA) 18 and 27 with an accompanying loss of genomic sequences mainly in the distal end of BTA 18 and the proximal end of BTA 27. The resulting phenotype included hypospadias, growth retardation and ventricular septal defect.
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Affiliation(s)
- Alessandra Iannuzzi
- Institute for the Animal Production System in Mediterranean Environment (ISPAAM), National Research Council (CNR), Naples, Italy
| | - Marina Braun
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Viviana Genualdo
- Institute for the Animal Production System in Mediterranean Environment (ISPAAM), National Research Council (CNR), Naples, Italy
| | - Angela Perucatti
- Institute for the Animal Production System in Mediterranean Environment (ISPAAM), National Research Council (CNR), Naples, Italy
| | - Sina Reinartz
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ioannis Proios
- Clinic for Cattle, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Maike Heppelmann
- Clinic for Cattle, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Jürgen Rehage
- Clinic for Cattle, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Kirsten Hülskötter
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andreas Beineke
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Julia Metzger
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Hannover, Germany
- * E-mail:
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11
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Kuznetsova T, Fedulov A, Fedulova E, Semenov B, Prusakov A. Hypospadias in a Sheltie puppy: A case report. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2020. [DOI: 10.15547/bjvm.2257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Hypospadias in dogs is a rare pathology in the veterinary practice. The manifestation of hypospadias in dogs is diverse, since there is a varying degree of damage to the urogenital apparatus. The owners of a Sheltie puppy at the age of 3 days came to the clinic due to the difficulty of determining sex, the presence of inflammation of the anus and abdominal skin, defecation and urination violations. Clinical examination of the puppy showed a blind-closed preputial sac, absence of the ventral wall of the prepuce and an open urogenital urine trough was located in its place in the abdominal wall area. On examination of the puppy at the age of 28 days, hyperaemia and swelling of the anus were noted, as well as prolapse of the rectum. Findings of the examination at the age of 4 months consisted of drying of the mucous part of the open urogenital canal chute and accumulation of pus in the underdeveloped preputial sac. Bilateral cryptorchidism and the absence of the scrotum were also found out. A decision on the surgical treatment was made. The anus and the opening of the urethra were separated to form a urethrostomy in the scrotum and restore the integrity of the anus. On the 5th post operative day, oedema and stricture of the reconstructed urethra resulted in difficulty urinating, followed by the formation of urinary fistula in the perineal region below the anus opening. As a result of the chosen surgical treatment approach, the problem with contact dermatitis of the perineum and pollakiuria was solved.
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Krzeminska P, Nizanski W, Nowacka-Woszuk J, Switonski M. Analysis of testosterone pathway genes in dogs (78,XY; SRY-positive) with ambiguous external genitalia revealed a homozygous animal for 2-bp deletion causing premature stop codon in HSD17B3. Anim Genet 2019; 50:705-711. [PMID: 31476086 DOI: 10.1111/age.12850] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2019] [Indexed: 12/12/2022]
Abstract
The genetic background of disorders of sex development (DSD) in dogs with a normal male sex chromosome set (78,XY) is poorly described. In this study, we present for the first time, an analysis of six genes of the testosterone pathway, encoding enzymes (CYP17A1, HSD3B2, HSD17B3, SRD5A2) and transcription factors (NR5A1, AR). The entire coding sequence and flanking regions of the introns, 5'-UTR and 3'-UTR were analyzed in five DSD dogs (78,XY, SRY-positive) with ambiguous external genitalia and in 15 control dogs. A homozygous deletion of 2 bp in exon 2 of HSD17B3 (hydroxysteroid 17-beta dehydrogenase 3) was found in a Dachshund dog with enlarged clitoris, vulva and abdominal gonads and decreased serum testosterone level. In silico analysis revealed that this deleterious variant causes truncation of the encoded polypeptide (from 306 to 65 amino acids) and deprivation of the active site of the encoded enzyme. Genotyping of 23 control Dachshund dogs showed a normal homozygous genotype. Thus, we assumed that the 2-bp deletion is the causative variant. Moreover, 24 SNPs (four in CYP17A1, three in HSD3B2, six in HSD17B3, five in SRD5A2, one in AR and five in NR5A1), two intronic indels (one in HSD3B2 and one in SRD5A2) and two microsatellite polymorphisms in exon 1 of AR were found. Six SNPs appeared to be novel. No association with DSD phenotype was observed. Identification of the first case of DSD in domestic animals caused by a deleterious variant of a gene involved in testosterone synthesis showed that these genes are important candidates in such studies.
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Affiliation(s)
- P Krzeminska
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637, Poznan, Poland
| | - W Nizanski
- Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Plac Grunwaldzki 49, 50-366, Wroclaw, Poland
| | - J Nowacka-Woszuk
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637, Poznan, Poland
| | - M Switonski
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wolynska 33, 60-637, Poznan, Poland
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Krzemińska P, D'Anza E, Ciotola F, Paciello O, Restucci B, Peretti V, Albarella S, Switonski M. Polymorphisms of MAMLD1, SRD5A2, and AR Candidate Genes in Seven Dogs (78,XY; SRY-Positive) Affected by Hypospadias or Cryptorchidism. Sex Dev 2019; 13:92-98. [PMID: 31055572 DOI: 10.1159/000500219] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2019] [Indexed: 12/27/2022] Open
Abstract
Knowledge of the molecular background of disorders of sex development (DSD) in dogs with normal sets of XY chromosomes (XY DSD) is very scarce. However, extensive studies have been carried out in humans, showing that polymorphisms and mutations of numerous genes, including SRY, MAMLD1, SRD5A2, and AR, are associated with or responsible for XY DSD. In this study, we analyzed the entire coding sequence of these genes in 7 dogs (78,XY) with ambiguous external genitalia (hypospadias, cryptorchidism, bifid scrotum, or rudimentary penis). The most common disorder was hypospadias (6 cases), followed by cryptorchidism (4 cases). The co-occurrence of both abnormalities was observed in 3 dogs. Polymorphisms were found in MAMLD1 (3 SNPs), SRD5A2 (5 SNPs), and AR (2 STRs and 1 SNP), while SRY was monomorphic. However, the distribution of the polymorphic variants in the DSD dogs and 11 control XY dogs did not differ significantly. Our study suggests that an association between the polymorphisms of the studied candidate genes and hypospadias or cryptorchidism is unlikely in dogs. We thus support the recent suggestion that hypospadias is not rare in this species, and moreover, we show that co-occurrence of hypospadias and cryptorchidism can be quite frequent.
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