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1.
Vet J ; 231: 30-32, 2018 01.
Article in English | MEDLINE | ID: mdl-29429484

ABSTRACT

This study investigated familial relationships among Deutsch Drahthaar dogs with craniomandibular osteopathy and examined the most likely mode of inheritance. Sixteen Deutsch Drahthaar dogs with craniomandibular osteopathy were diagnosed using clinical findings, radiography or computed tomography. All 16 dogs with craniomandibular osteopathy had one common ancestor. Complex segregation analyses rejected models explaining the segregation of craniomandibular osteopathy through random environmental variation, monogenic inheritance or an additive sex effect. Polygenic and mixed major gene models sufficiently explained the segregation of craniomandibular osteopathy in the pedigree analysis and offered the most likely hypotheses. The SLC37A2:c.1332C>T variant was not found in a sample of Deutsch Drahthaar dogs with craniomandibular osteopathy, nor in healthy controls. Craniomandibular osteopathy is an inherited condition in Deutsch Drahthaar dogs and the inheritance seems to be more complex than a simple Mendelian model.


Subject(s)
Bone Diseases/genetics , Craniomandibular Disorders/genetics , Dog Diseases/genetics , Animals , Bone Diseases/diagnostic imaging , Craniomandibular Disorders/diagnostic imaging , Dog Diseases/diagnostic imaging , Dogs , Female , Male , Models, Genetic , Pedigree , Radiography/veterinary , Tomography, X-Ray Computed/veterinary
2.
PLoS Genet ; 12(5): e1006037, 2016 05.
Article in English | MEDLINE | ID: mdl-27187611

ABSTRACT

One to two percent of all children are born with a developmental disorder requiring pediatric hospital admissions. For many such syndromes, the molecular pathogenesis remains poorly characterized. Parallel developmental disorders in other species could provide complementary models for human rare diseases by uncovering new candidate genes, improving the understanding of the molecular mechanisms and opening possibilities for therapeutic trials. We performed various experiments, e.g. combined genome-wide association and next generation sequencing, to investigate the clinico-pathological features and genetic causes of three developmental syndromes in dogs, including craniomandibular osteopathy (CMO), a previously undescribed skeletal syndrome, and dental hypomineralization, for which we identified pathogenic variants in the canine SLC37A2 (truncating splicing enhancer variant), SCARF2 (truncating 2-bp deletion) and FAM20C (missense variant) genes, respectively. CMO is a clinical equivalent to an infantile cortical hyperostosis (Caffey disease), for which SLC37A2 is a new candidate gene. SLC37A2 is a poorly characterized member of a glucose-phosphate transporter family without previous disease associations. It is expressed in many tissues, including cells of the macrophage lineage, e.g. osteoclasts, and suggests a disease mechanism, in which an impaired glucose homeostasis in osteoclasts compromises their function in the developing bone, leading to hyperostosis. Mutations in SCARF2 and FAM20C have been associated with the human van den Ende-Gupta and Raine syndromes that include numerous features similar to the affected dogs. Given the growing interest in the molecular characterization and treatment of human rare diseases, our study presents three novel physiologically relevant models for further research and therapy approaches, while providing the molecular identity for the canine conditions.


Subject(s)
Abnormalities, Multiple/genetics , Arachnodactyly/genetics , Blepharophimosis/genetics , Cleft Palate/genetics , Contracture/genetics , Exophthalmos/genetics , Hyperostosis, Cortical, Congenital/genetics , Microcephaly/genetics , Osteosclerosis/genetics , Abnormalities, Multiple/pathology , Animals , Antiporters/genetics , Arachnodactyly/pathology , Blepharophimosis/pathology , Bone Diseases/genetics , Bone Diseases/pathology , Casein Kinase I/genetics , Cleft Palate/pathology , Contracture/pathology , Craniomandibular Disorders/genetics , Craniomandibular Disorders/pathology , Disease Models, Animal , Dogs , Exophthalmos/pathology , Extracellular Matrix Proteins/genetics , Genetic Predisposition to Disease , Genome-Wide Association Study , Humans , Hyperostosis, Cortical, Congenital/pathology , Microcephaly/pathology , Osteosclerosis/pathology , Scavenger Receptors, Class F/genetics
3.
Rev. Círc. Argent. Odontol ; 26(181): 9-18, 20-2, nov. 1997. ilus
Article in Spanish | LILACS | ID: lil-231851

ABSTRACT

A partir de un modelo presuntivo que involucra seis factores etiopatogénicos asociados a la DCM: oclusales, psicosociales, parafunción, genéticos, hipermovilidad articular sistémica (HAS) y trauma, se analizan los trabajos de publicación reciente referidos a cada uno de ellos evaluándose su posible contribución etiopatogénica. Se especifican algunos hallazgos controversiales, sobre todo los referidos a los factores oclusales que, a partir de revisiones y nuevas publicaciones, han puesto en duda su carácter relevante asociado a la DCM. Los aspectos psicológicos parecen mantener su valor contributivo, históricamente considerado, advirtiéndose cierto énfasis para los denominados "psicosociales", involucrando aspectos contingentes y cicunstancias referidos al entorno socioeconómico. En cuanto a la parafunción, en particular el bruxismo, se señalan las dificultades metodológicas para evaluar su frecuencia y el grado de certeza de su valor contributivo asociado a la DCM. Los factores genéticos y la HAS, asociada a patologías intracapsulares, deberán ser estudiadas más ampliamente en el futuro, pues pueden ser la clave para el reconocimeinto de aspectos aún no aclarados sobre mecanismos etiopatogénicos de la DCM. En cuanto a los factores traumáticos, la posibles deformación de los resultados por razones económicas secundarias, propias de los litigios legales, habría "sobreinterpretado" algunos hallazgos. Aún así, hay un importante número de trabajos asociándolos a la DCM


Subject(s)
Humans , Male , Female , Craniomandibular Disorders/etiology , Craniomandibular Disorders/pathology , Craniomandibular Disorders/physiopathology , Bruxism/diagnosis , Craniomandibular Disorders/genetics , Craniomandibular Disorders/psychology , Depressive Disorder/diagnosis , Intervertebral Disc Displacement/diagnosis , Malocclusion/diagnosis , Malocclusion/physiopathology , Dental Occlusion, Traumatic/diagnosis , Osteoarthritis/diagnosis , Temporomandibular Joint Dysfunction Syndrome/diagnosis , Socioeconomic Factors
4.
Rev. Círc. Argent. Odontol ; 26(181): 9-18, 20-2, nov. 1997. ilus
Article in Spanish | BINACIS | ID: bin-16391

ABSTRACT

A partir de un modelo presuntivo que involucra seis factores etiopatogénicos asociados a la DCM: oclusales, psicosociales, parafunción, genéticos, hipermovilidad articular sistémica (HAS) y trauma, se analizan los trabajos de publicación reciente referidos a cada uno de ellos evaluándose su posible contribución etiopatogénica. Se especifican algunos hallazgos controversiales, sobre todo los referidos a los factores oclusales que, a partir de revisiones y nuevas publicaciones, han puesto en duda su carácter relevante asociado a la DCM. Los aspectos psicológicos parecen mantener su valor contributivo, históricamente considerado, advirtiéndose cierto énfasis para los denominados "psicosociales", involucrando aspectos contingentes y cicunstancias referidos al entorno socioeconómico. En cuanto a la parafunción, en particular el bruxismo, se señalan las dificultades metodológicas para evaluar su frecuencia y el grado de certeza de su valor contributivo asociado a la DCM. Los factores genéticos y la HAS, asociada a patologías intracapsulares, deberán ser estudiadas más ampliamente en el futuro, pues pueden ser la clave para el reconocimeinto de aspectos aún no aclarados sobre mecanismos etiopatogénicos de la DCM. En cuanto a los factores traumáticos, la posibles deformación de los resultados por razones económicas secundarias, propias de los litigios legales, habría "sobreinterpretado" algunos hallazgos. Aún así, hay un importante número de trabajos asociándolos a la DCM (AU)


Subject(s)
Humans , Male , Female , Craniomandibular Disorders/etiology , Craniomandibular Disorders/pathology , Craniomandibular Disorders/physiopathology , Temporomandibular Joint Dysfunction Syndrome/diagnosis , Bruxism/diagnosis , Dental Occlusion, Traumatic/diagnosis , Socioeconomic Factors , Osteoarthritis/diagnosis , Intervertebral Disc Displacement/diagnosis , Craniomandibular Disorders/psychology , Craniomandibular Disorders/genetics , Malocclusion/diagnosis , Malocclusion/physiopathology , Depressive Disorder/diagnosis
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