74 research outputs found
ΠΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ Π΄Π²ΡΡ ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΡ Π±ΠΎΠ»ΡΠ½ΡΡ Ρ Π°ΡΡΠΎΡΠΎΠΌΠ½ΠΎ-ΡΠ΅ΡΠ΅ΡΡΠΈΠ²Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ΅ΡΠ°Π»ΠΈΠ΅ΠΉ 2-Π³ΠΎ ΡΠΈΠΏΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΠΎΠΉ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ WDR62 (OMIM: 604317)
The article describes the clinical and genetic characteristics of 2 patients from Russia with autosomal recessive primary microcephaly type 2, caused by previously described and newly identified mutations in the WDR62 gene. The data obtained the support the hypothesis that there are no clear correlations between the type and location of the mutation and the severity of clinical manifestations of the disease. There is discussed the possible influence of a mutation in the WDR62 gene on the occurrence of a fibrillar astrocytoma.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΈΠ΅ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ 2 ΡΠΎΡΡΠΈΠΉΡΠΊΠΈΡ
Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ Π°ΡΡΠΎΡΠΎΠΌΠ½ΠΎ-ΡΠ΅ΡΠ΅ΡΡΠΈΠ²Π½ΠΎΠΉ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠ΅ΡΠ°Π»ΠΈΠ΅ΠΉ 2-Π³ΠΎ ΡΠΈΠΏΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΠΎΠΉ ΡΠ°Π½Π΅Π΅ ΠΎΠΏΠΈΡΠ°Π½Π½ΡΠΌΠΈ ΠΈ Π²Π½ΠΎΠ²Ρ Π²ΡΡΠ²Π»Π΅Π½Π½ΡΠΌΠΈ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ WDR62. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π΄Π°Π½Π½ΡΠ΅ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡ Π² ΠΏΠΎΠ»ΡΠ·Ρ Π³ΠΈΠΏΠΎΡΠ΅Π·Ρ ΠΎΠ± ΠΎΡΡΡΡΡΡΠ²ΠΈΠΈ ΡΠ΅ΡΠΊΠΈΡ
ΠΊΠΎΡΡΠ΅Π»ΡΡΠΈΠΉ ΠΌΠ΅ΠΆΠ΄Ρ ΡΠΈΠΏΠΎΠΌ ΠΈ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°ΡΠΈΠ΅ΠΉ ΠΌΡΡΠ°ΡΠΈΠΈ ΠΈ ΡΡΠΆΠ΅ΡΡΡΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ. ΠΠ±ΡΡΠΆΠ΄Π΅Π½ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΌΡΡΠ°ΡΠΈΠΈ Π² Π³Π΅Π½Π΅ WDR62 Π½Π° Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΠ΅ ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠ½ΠΎΠΉ Π°ΡΡΡΠΎΡΠΈΡΠΎΠΌΡ
Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΠ°ΠΌΠ±βΠ¨Π°ΡΡΠ΅ΡΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΠΉ ΡΠ°Π½Π΅Π΅ Π½Π΅ ΠΎΠΏΠΈΡΠ°Π½Π½ΠΎΠΉ ΠΌΡΡΠ°ΡΠΈΠ΅ΠΉ Π² Π³Π΅Π½Π΅ SOX5
Clinical and genetic characteristics of a patient with LambβShaffer syndrome due to the newly discovered heterozygous missense mutation p.1868A>C in the 14 exon of the SOX5 gene are presented in the next generation sequencing of exom. It is shown that, in contrast to the previously described patients due to the presence of a deletion in the region of the gene or segment of chromosome 12p12.1, in the presence of missense mutation, the intellectual deficit and the dysmorphic features of the structure are not pronounced sharply and there is no anomaly in the development of other organs and systems.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ Π±ΠΎΠ»ΡΠ½ΠΎΠ³ΠΎ Ρ ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ ΠΠ°ΠΌΠ±βΠ¨Π°ΡΡΠ΅ΡΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΠΌ Π²ΠΏΠ΅ΡΠ²ΡΠ΅ Π²ΡΡΠ²Π»Π΅Π½Π½ΠΎΠΉ Π³Π΅ΡΠ΅ΡΠΎΠ·ΠΈΠ³ΠΎΡΠ½ΠΎΠΉ ΠΌΠΈΡΡΠ΅Π½Ρ-ΠΌΡΡΠ°ΡΠΈΠ΅ΠΉ Ρ.1868Π>Π‘ Π² ΡΠΊΠ·ΠΎΠ½Π΅ 14 Π³Π΅Π½Π° SOX5 ΠΏΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΡΠ΅ΠΊΠ²Π΅Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΠ·ΠΎΠΌΠ° Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΠΊΠΎΠ»Π΅Π½ΠΈΡ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π² ΠΎΡΠ»ΠΈΡΠΈΠ΅ ΠΎΡ ΡΠ°Π½Π΅Π΅ ΠΎΠΏΠΈΡΠ°Π½Π½ΡΡ
Π±ΠΎΠ»ΡΠ½ΡΡ
c ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ ΠΠ°ΠΌΠ±βΠ¨Π°ΡΡΠ΅ΡΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΠΌ Π½Π°Π»ΠΈΡΠΈΠ΅ΠΌ Π΄Π΅Π»Π΅ΡΠΈΠΈ Π² ΠΎΠ±Π»Π°ΡΡΠΈ Π³Π΅Π½Π° ΠΈΠ»ΠΈ ΡΡΠ°ΡΡΠΊΠ° Ρ
ΡΠΎΠΌΠΎΡΠΎΠΌΡ 12Ρ12.1, ΠΏΡΠΈ ΠΌΠΈΡΡΠ΅Π½Ρ-ΠΌΡΡΠ°ΡΠΈΠΈ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠΉ Π΄Π΅ΡΠΈΡΠΈΡ ΠΈ Π΄ΠΈΡΠΌΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΡΡ ΡΡΡΠΎΠ΅Π½ΠΈΡ Π²ΡΡΠ°ΠΆΠ΅Π½Ρ Π½Π΅ΡΠ΅Π·ΠΊΠΎ ΠΈ ΠΎΡΡΡΡΡΡΠ²ΡΡΡ Π°Π½ΠΎΠΌΠ°Π»ΠΈΠΈ ΡΠ°Π·Π²ΠΈΡΠΈΡ Π΄ΡΡΠ³ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ² ΠΈ ΡΠΈΡΡΠ΅ΠΌ.
ΠΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΠΈ Π°Π»Π³ΠΎΡΠΈΡΠΌ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΏΡΠΎΠ³ΡΠ΅ΡΡΠΈΡΡΡΡΠΈΡ ΠΌΡΡΠ΅ΡΠ½ΡΡ Π΄ΠΈΡΡΡΠΎΡΠΈΠΉ, ΠΌΠ°Π½ΠΈΡΠ΅ΡΡΠΈΡΡΡΡΠΈΡ ΠΏΠΎΡΠ»Π΅ ΠΏΠ΅ΡΠΈΠΎΠ΄Π° Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ
Background. Progressive muscular dystrophies (PMD) are a group of genetically heterogeneous diseases that manifest in the age range from early childhood to adulthood. Depending on the predominant topography of the muscular lesion, there are: limb-girdle, distal, oculopharyngeal, facial-shoulder-scapular-peroneal variants of PMD.Aim. Creation of algorithms for the differential diagnosis of PMD with multiple topography of muscle lesions.Materials and methods. We observed 192 patients aged 1.5 to 66 years with PMD with a debut after a period of normal motor development. The diagnosis was established on the basis of genealogical analysis, neurological examination, assessment of non-muscular manifestations, results of instrumental, biochemical molecular genetic studies.Results. Four groups of patients were identified, differing in the topography of muscle damage and 19 genetic variants of PMD were diagnosed. An algorithm for diagnosing PMD that manifest after a period of normal motor development is proposed, which is based on the frequency of occurrence of individual genetic variants and their proportion in the analyzed sample, the presence of major mutations in causal genes, the features of phenotypic characteristics, the gender of the patient and the possibility of conducting etiopathogenetic therapy developed by for some genetic variants.Conclusion. The use of the proposed algorithm in clinical practice can significantly reduce the economic and time costs for confirmatory molecular genetic diagnosis, and promptly recommend etiopathogenetic therapy for some genetic variants of this group of diseases.Β ΠΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. ΠΡΠΎΠ³ΡΠ΅ΡΡΠΈΡΡΡΡΠΈΠ΅ ΠΌΡΡΠ΅ΡΠ½ΡΠ΅ Π΄ΠΈΡΡΡΠΎΡΠΈΠΈ (ΠΠΠ) β Π³ΡΡΠΏΠΏΠ° Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΡΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ, ΠΌΠ°Π½ΠΈΡΠ΅ΡΡΠΈΡΡΡΡΠΈΡ
Π² Π²ΠΎΠ·ΡΠ°ΡΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ ΠΎΡ ΡΠ°Π½Π½Π΅Π³ΠΎ Π΄Π΅ΡΡΠΊΠΎΠ³ΠΎ Π΄ΠΎ Π²Π·ΡΠΎΡΠ»ΠΎΠ³ΠΎ Π²ΠΎΠ·ΡΠ°ΡΡΠ°. Π Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΠΎΠΏΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΌΡΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΡ Π²ΡΠ΄Π΅Π»ΡΡΡ ΠΏΠΎΡΡΠ½ΠΎ-ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΡΡΠ½ΡΠ΅, Π΄ΠΈΡΡΠ°Π»ΡΠ½ΡΠ΅, ΠΎΠΊΡΠ»ΠΎΡΠ°ΡΠΈΠ½Π³Π΅Π°Π»ΡΠ½ΡΠ΅, Π»ΠΈΡΠ΅-ΠΏΠ»Π΅ΡΠ΅-Π»ΠΎΠΏΠ°ΡΠΎΡΠ½ΠΎ-ΠΏΠ΅ΡΠΎΠ½Π΅Π°Π»ΡΠ½ΡΠ΅ Π²Π°ΡΠΈΠ°Π½ΡΡ ΠΠΠ.Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΡΠΎΠ·Π΄Π°Π½ΠΈΠ΅ Π°Π»Π³ΠΎΡΠΈΡΠΌΠΎΠ² Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΠΠ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΠΎΠΏΠΎΠ³ΡΠ°ΡΠΈΠ΅ΠΉ ΠΌΡΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΡ.ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠΎΠ΄ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠ΅ΠΌ Π½Π°Ρ
ΠΎΠ΄ΠΈΠ»ΠΈΡΡ 192 ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° Π² Π²ΠΎΠ·ΡΠ°ΡΡΠ΅ ΠΎΡ 1,5 Π΄ΠΎ 66 Π»Π΅Ρ Ρ ΠΠΠ Ρ Π΄Π΅Π±ΡΡΠΎΠΌ ΠΏΠΎΡΠ»Π΅ ΠΏΠ΅ΡΠΈΠΎΠ΄Π° Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ. ΠΠΈΠ°Π³Π½ΠΎΠ· ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ Π½Π° ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠΈ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π³Π΅Π½Π΅Π°Π»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, Π½Π΅Π²ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠΌΠΎΡΡΠ°, ΠΎΡΠ΅Π½ΠΊΠΈ Π²Π½Π΅ΠΌΡΡΠ΅ΡΠ½ΡΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ, ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
, Π±ΠΈΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΡΠ΄Π΅Π»Π΅Π½ΠΎ 4 Π³ΡΡΠΏΠΏΡ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ², ΡΠ°Π·Π»ΠΈΡΠ°ΡΡΠΈΡ
ΡΡ ΠΏΠΎ ΡΠΎΠΏΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΡ ΠΌΡΡΡ, ΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠΎΠ²Π°Π½ΠΎ 19 Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π²Π°ΡΠΈΠ°Π½ΡΠΎΠ² ΠΠΠ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ Π°Π»Π³ΠΎΡΠΈΡΠΌ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΠΠ, ΠΌΠ°Π½ΠΈΡΠ΅ΡΡΠΈΡΡΡΡΠΈΡ
ΠΏΠΎΡΠ»Π΅ ΠΏΠ΅ΡΠΈΠΎΠ΄Π° Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ, Π² ΠΎΡΠ½ΠΎΠ²Ρ ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Ρ ΡΠ°ΡΡΠΎΡΡ Π²ΡΡΡΠ΅ΡΠ°Π΅ΠΌΠΎΡΡΠΈ ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ
Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π²Π°ΡΠΈΠ°Π½ΡΠΎΠ² ΠΈ ΠΈΡ
Π΄ΠΎΠ»Π΅Π²Π°Ρ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π½ΠΎΡΡΡ Π² Π°Π½Π°Π»ΠΈΠ·ΠΈΡΡΠ΅ΠΌΠΎΠΉ Π²ΡΠ±ΠΎΡΠΊΠ΅, Π½Π°Π»ΠΈΡΠΈΠ΅ ΠΌΠ°ΠΆΠΎΡΠ½ΡΡ
ΠΌΡΡΠ°ΡΠΈΠΉ Π² ΠΊΠ°ΡΠ·Π°Π»ΡΠ½ΡΡ
Π³Π΅Π½Π°Ρ
, ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠ΅Π½ΠΎΡΠΈΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, ΠΏΠΎΠ» Π±ΠΎΠ»ΡΠ½ΠΎΠ³ΠΎ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΡΡΠΈΠΎΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ, ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠΉ Π΄Π»Ρ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π²Π°ΡΠΈΠ°Π½ΡΠΎΠ².ΠΡΠ²ΠΎΠ΄Ρ. ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ Π°Π»Π³ΠΎΡΠΈΡΠΌΠ° Π² ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΠ½ΠΈΠ·ΠΈΡΡ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠ΅ Π·Π°ΡΡΠ°ΡΡ Π½Π° ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π°ΡΡΠ΅ΠΉ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΈ ΡΠ²ΠΎΠ΅Π²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°ΡΡ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ ΡΡΠΈΠΎΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ ΠΏΡΠΈ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π²Π°ΡΠΈΠ°Π½ΡΠ°Ρ
ΡΡΠΎΠΉ Π³ΡΡΠΏΠΏΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ.
Pathomechanisms of a CLCN1 Mutation Found in a Russian Family Suffering From Becker's Myotonia
Objective: Myotonia congenita (MC) is a rare muscle disease characterized by sarcolemma over-excitability inducing skeletal muscle stiffness. It can be inherited either as an autosomal dominant (Thomsen's disease) or an autosomal recessive (Becker's disease) trait. Both types are caused by loss-of-function mutations in the CLCN1 gene, encoding for ClC-1 chloride channel. We found a ClC-1 mutation, p.G411C, identified in Russian patients who suffered from a severe form of Becker's disease. The purpose of this study was to provide a solid correlation between G411C dysfunction and clinical symptoms in the affected patient. Methods: We provide clinical and genetic information of the proband kindred. Functional studies include patch-clamp electrophysiology, biotinylation assay, western blot analysis, and confocal imaging of G411C and wild-type ClC-1 channels expressed in HEK293T cells. Results: The G411C mutation dramatically abolished chloride currents in transfected HEK cells. Biochemical experiments revealed that the majority of G411C mutant channels did not reach the plasma membrane but remained trapped in the cytoplasm. Treatment with the proteasome inhibitor MG132 reduced the degradation rate of G411C mutant channels, leading to their expression at the plasma membrane. However, despite an increase in cell surface expression, no significant chloride current was recorded in the G411C-transfected cell treated with MG132, suggesting that this mutation produces non-functional ClC-1 chloride channels. Conclusion: These results suggest that the molecular pathophysiology of G411C is linked to a reduced plasma membrane expression and biophysical dysfunction of mutant channels, likely due to a misfolding defect. Chloride current abolition confirms that the mutation is responsible for the clinical phenotype
ΠΠ΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠ°Ρ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΠΎΡΡΡ ΠΈ Π½Π΅ΠΊΠΎΡΠΎΡΡΠ΅ Π΄ΡΡΠ³ΠΈΠ΅ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ, ΠΎΡΠ»ΠΎΠΆΠ½ΡΡΡΠΈΠ΅ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΡ Π½Π°ΡΠ»Π΅Π΄ΡΡΠ²Π΅Π½Π½ΡΡ Π±ΠΎΠ»Π΅Π·Π½Π΅ΠΉ Π½Π΅ΡΠ²Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ
A hereditary disorders of the nervous system is one of the largest group of human monogenic disorders with high-grade genetic heterogeneityΒ and clinical polymorphism. The main types of genetic heterogeneity and their possible causes are explained by giving typical examplesΒ of different nosological forms. The basic problems and feasible solution of medico-genetic counseling and education of high-risk familiesΒ in case of genetic heterogeneity are discussed.ΠΠ°ΡΠ»Π΅Π΄ΡΡΠ²Π΅Π½Π½ΡΠ΅ Π±ΠΎΠ»Π΅Π·Π½ΠΈ Π½Π΅ΡΠ²Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ β ΠΎΠ΄Π½Π° ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΌΠ½ΠΎΠ³ΠΎΡΠΈΡΠ»Π΅Π½Π½ΡΡ
Π³ΡΡΠΏΠΏ ΠΌΠΎΠ½ΠΎΠ³Π΅Π½Π½ΠΎΠΉ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠ΅Π»ΠΎΠ²Π΅ΠΊΠ°, Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΠ°ΡΡΡ Π²ΡΡΠ°ΠΆΠ΅Π½Π½ΠΎΠΉ Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΠΎΡΡΡΡ ΠΈ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΏΠΎΠ»ΠΈΠΌΠΎΡΡΠΈΠ·ΠΌΠΎΠΌ. Π ΡΡΠ°ΡΡΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΎΡΠ½ΠΎΠ²Π½ΡΠ΅ ΡΠΈΠΏΡΒ Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΠΎΡΡΠΈ ΠΈ Π½Π° ΠΏΡΠΈΠΌΠ΅ΡΠ°Ρ
ΠΎΡΠ΄Π΅Π»ΡΠ½ΡΡ
Π½ΠΎΠ·ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΎΡΠΌ ΡΡΠΎΠΉ Π³ΡΡΠΏΠΏΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ ΠΏΡΠ΅Π΄ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Ρ ΠΏΡΠΈΡΠΈΠ½ΡΒ Π΅Π΅ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ. ΠΠ±ΠΎΠ·Π½Π°ΡΠ΅Π½Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ, ΡΠΎΠ·Π΄Π°Π²Π°Π΅ΠΌΡΠ΅ Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³Π΅ΡΠ΅ΡΠΎΠ³Π΅Π½Π½ΠΎΡΡΡΡ, ΠΏΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΠΌΠ΅Π΄ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎΒ ΠΊΠΎΠ½ΡΡΠ»ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΎΡΡΠ³ΠΎΡΠ΅Π½Π½ΡΡ
ΡΠ΅ΠΌΠ΅ΠΉ ΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ ΡΠΏΠΎΡΠΎΠ±Ρ ΠΈΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡ
Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΠΉΠΌΠ΅βΠΡΠΈΠΏΠΏ Ρ ΡΠΎΡΡΠΈΠΉΡΠΊΠΎΠ³ΠΎ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° Ρ Π²Π½ΠΎΠ²Ρ Π²ΡΡΠ²Π»Π΅Π½Π½ΠΎΠΉ ΠΌΡΡΠ°ΡΠΈΠ΅ΠΉ Π² Π³Π΅Π½Π΅ MAF
AymΓ©βGripp syndrome is a rare autosomal dominant syndrome caused by mutations in the MAF gene and is characterized by a pronounced phenotypic polymorphism. The core of clinical signs consists of congenital cataracts, sensorineural hearing loss, specific dysmorphic facial features and intellectual disabilities. With varying frequency, patients have: radioulnar synostosis, ArnoldβChiari malformation, aseptic pericarditis, dental anomaly and osteoarthritis. The article presents the clinical and genetic characteristics of the first Russian patient with AymΓ©βGripp syndrome caused by a newly identified mutation s.173C>A (p.Thr58Asn NM_005360.4) in a heterozygous state in the MAF gene. The influence of the loΒ calization and type of amino acid substitutions in the protein product of the gene on the severity and specificity of the clinical manifestations of the syndrome is discussed.Β Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΠΉΠΌΠ΅βΠΡΠΈΠΏΠΏ β ΡΠ΅Π΄ΠΊΠΎΠ΅ Π°ΡΡΠΎΡΠΎΠΌΠ½ΠΎ-Π΄ΠΎΠΌΠΈΠ½Π°Π½ΡΠ½ΠΎΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΠΎΠ΅ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ MAF, ΠΊΠΎΡΠΎΡΠΎΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΠ΅ΡΡΡ Π²ΡΡΠ°ΠΆΠ΅Π½Π½ΡΠΌ ΡΠ΅Π½ΠΎΡΠΈΠΏΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΏΠΎΠ»ΠΈΠΌΠΎΡΡΠΈΠ·ΠΌΠΎΠΌ. Π―Π΄ΡΠΎ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΈΠ·Π½Π°ΠΊΠΎΠ² ΡΠΎΡΡΠΎΠΈΡ ΠΈΠ· Π²ΡΠΎΠΆΠ΄Π΅Π½Π½ΠΎΠΉ ΠΊΠ°ΡΠ°ΡΠ°ΠΊΡΡ, Π½Π΅ΠΉΡΠΎΡΠ΅Π½ΡΠΎΡΠ½ΠΎΠΉ ΡΡΠ³ΠΎΡΡ
ΠΎΡΡΠΈ, ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π΄ΠΈΠ·ΠΌΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅ΡΡ ΡΡΡΠΎΠ΅Π½ΠΈΡ Π»ΠΈΡΠ° ΠΈ ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ Π΄Π΅ΡΠΈΡΠΈΡΠ°. Π‘ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΠ°ΡΡΠΎΡΠΎΠΉ Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΎΡΠΌΠ΅ΡΠ°ΡΡΡΡ ΡΠ°Π΄ΠΈΠΎΡΠ»ΡΠ½Π°ΡΠ½ΡΠΉ ΡΠΈΠ½ΠΎΡΡΠΎΠ·, Π°Π½ΠΎΠΌΠ°Π»ΠΈΡ ΠΡΠ½ΠΎΠ»ΡΠ΄Π°β ΠΠΈΠ°ΡΠΈ, Π°ΡΠ΅ΠΏΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΏΠ΅ΡΠΈΠΊΠ°ΡΠ΄ΠΈΡ, Π°Π½ΠΎΠΌΠ°Π»ΠΈΡ Π·ΡΠ±ΠΎΠ² ΠΈ ΠΎΡΡΠ΅ΠΎΠ°ΡΡΡΠΈΡΡ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΠΏΠ΅ΡΠ²ΠΎΠΉ ΡΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΊΠΈ Ρ ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ ΠΠΉΠΌΠ΅βΠΡΠΈΠΏΠΏ, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΡΠΌ Π²Π½ΠΎΠ²Ρ Π²ΡΡΠ²Π»Π΅Π½Π½ΠΎΠΉ ΠΌΡΡΠ°ΡΠΈΠ΅ΠΉ Ρ.173Π‘>Π (p.Thr58Asn NM_005360.4) Π² Π³Π΅ΡΠ΅ΡΠΎΠ·ΠΈΠ³ΠΎΡΠ½ΠΎΠΌ ΡΠΎΡΡΠΎΡΠ½ΠΈΠΈ Π² Π³Π΅Π½Π΅ MAF. ΠΠ±ΡΡΠΆΠ΄Π°Π΅ΡΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΈ ΡΠΈΠΏΠ° Π°ΠΌΠΈΠ½ΠΎΠΊΠΈΡΠ»ΠΎΡΠ½ΡΡ
Π·Π°ΠΌΠ΅Π½ Π² Π±Π΅Π»ΠΊΠΎΠ²ΠΎΠΌ ΠΏΡΠΎΠ΄ΡΠΊΡΠ΅ Π³Π΅Π½Π° Π½Π° ΡΡΠΆΠ΅ΡΡΡ ΠΈ ΡΠΏΠ΅ΡΠΈΡΠΈΠΊΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ ΡΠΈΠ½Π΄ΡΠΎΠΌΠ°.
ΠΡΠΈΡΠ΅ΡΠΈΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΡΠΏΠΈΠ½Π°Π»ΡΠ½ΠΎΠΉ ΠΌΡΡΠ΅ΡΠ½ΠΎΠΉ Π°ΡΡΠΎΡΠΈΠΈ 5q
Background. The variety of phenotypic manifestations of spinal muscular atrophy 5q (5qCMA) is the reason for the difficulty in diagnosing and delaying the diagnosis, which is of particular importance today due to the emergence of new etiopathogenetic therapeutic possibilities.Objective: determination of the main clinical features and symptoms of 5qCMA with onset at different age periods, and the development of an algorithm that can help in making decisions regarding the need for testing the SMN1 gene by primary care and hospital doctors.Materials and methods. A retrospective analysis of the case histories of patients observed at the Research Center of Medical Genetics with a confirmed diagnosis of 5qCMA was carried out.Results. The study included data from 315 patients, including: 173 with type I, 95 and 47 with types II and III 5qCMA. In all cases, the presence and diagnostic significance of 27 signs and symptoms were analyzed, depending on the age of disease manifestation. An attempt was made to isolate the main symptoms, which are the basis for the mandatory exclusion of 5qCMA by molecular genetic methods in patients with the onset of the disease before and after 18 months of life.ΠΠ²Π΅Π΄Π΅Π½ΠΈΠ΅. Π Π°Π·Π½ΠΎΠΎΠ±ΡΠ°Π·ΠΈΠ΅ ΡΠ΅Π½ΠΎΡΠΈΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ ΡΠΏΠΈΠ½Π°Π»ΡΠ½ΠΎΠΉ ΠΌΡΡΠ΅ΡΠ½ΠΎΠΉ Π°ΡΡΠΎΡΠΈΠΈ 5q (5qΠ‘ΠΠ) ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΏΡΠΈΡΠΈΠ½ΠΎΠΉ Π·Π°ΡΡΡΠ΄Π½Π΅Π½ΠΈΡ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π±ΠΎΠ»Π΅Π·Π½ΠΈ ΠΈ Π·Π°Π΄Π΅ΡΠΆΠΊΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΠ·Π°, ΡΡΠΎ ΡΠ΅Π³ΠΎΠ΄Π½Ρ ΠΈΠΌΠ΅Π΅Ρ ΠΎΡΠΎΠ±ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ Π² ΡΠ²ΡΠ·ΠΈ Ρ ΠΏΠΎΡΠ²Π»Π΅Π½ΠΈΠ΅ΠΌ Π½ΠΎΠ²ΡΡ
ΡΡΠΈΠΎΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅ΡΠ°ΠΏΠ΅Π²ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠ΅ΠΉ.Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ ΠΈ ΡΠΈΠΌΠΏΡΠΎΠΌΠΎΠ², Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½ΡΡ
Π΄Π»Ρ 5qΠ‘ΠΠ Ρ Π΄Π΅Π±ΡΡΠΎΠΌ Π² ΡΠ°Π·Π½ΡΡ
Π²ΠΎΠ·ΡΠ°ΡΡΠ½ΡΡ
ΠΏΠ΅ΡΠΈΠΎΠ΄Π°Ρ
, ΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° Π°Π»Π³ΠΎΡΠΈΡΠΌΠ°, ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΌΠΎΡΡ Π² ΠΏΡΠΈΠ½ΡΡΠΈΠΈ ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΠΈ ΡΠ΅ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π³Π΅Π½Π° SMN1 Π²ΡΠ°ΡΠ°ΠΌΠΈ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠ³ΠΎ Π·Π²Π΅Π½Π° ΠΈ ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠΎΠ².ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ ΡΠ΅ΡΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΈΡΡΠΎΡΠΈΠΉ Π±ΠΎΠ»Π΅Π·Π½ΠΈ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ², Π½Π°Π±Π»ΡΠ΄Π°Π²ΡΠΈΡ
ΡΡ Π² Π€ΠΠΠΠ£ Β«ΠΠ΅Π΄ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π½Π°ΡΡΠ½ΡΠΉ ΡΠ΅Π½ΡΡ ΠΈΠΌ. Π°ΠΊΠ°Π΄. Π.Π. ΠΠΎΡΠΊΠΎΠ²Π°Β» Ρ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½Π½ΡΠΌ Π΄ΠΈΠ°Π³Π½ΠΎΠ·ΠΎΠΌ 5qΠ‘ΠΠ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. Π ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΠΊΠ»ΡΡΠ΅Π½Ρ Π΄Π°Π½Π½ΡΠ΅ 315 Π±ΠΎΠ»ΡΠ½ΡΡ
, ΠΈΠ· Π½ΠΈΡ
173 β Ρ I ΡΠΈΠΏΠΎΠΌ, 95 ΠΈ 47 β ΡΠΎ II ΠΈ III ΡΠΈΠΏΠ°ΠΌΠΈ 5qΠ‘ΠΠ. ΠΠΎ Π²ΡΠ΅Ρ
ΡΠ»ΡΡΠ°ΡΡ
ΠΏΡΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Ρ Π½Π°Π»ΠΈΡΠΈΠ΅ ΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠ°Ρ Π·Π½Π°ΡΠΈΠΌΠΎΡΡΡ 27 ΠΏΡΠΈΠ·Π½Π°ΠΊΠΎΠ² ΠΈ ΡΠΈΠΌΠΏΡΠΎΠΌΠΎΠ² Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΠΎΠ·ΡΠ°ΡΡΠ° ΠΌΠ°Π½ΠΈΡΠ΅ΡΡΠ°ΡΠΈΠΈ Π±ΠΎΠ»Π΅Π·Π½ΠΈ. ΠΡΠ΅Π΄ΠΏΡΠΈΠ½ΡΡΠ° ΠΏΠΎΠΏΡΡΠΊΠ° Π²ΡΠ΄Π΅Π»Π΅Π½ΠΈΡ ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
ΡΠΈΠΌΠΏΡΠΎΠΌΠΎΠ², ΠΊΠΎΡΠΎΡΡΠ΅ ΡΠ²Π»ΡΡΡΡΡ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π΄Π»Ρ ΠΎΠ±ΡΠ·Π°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΡΠΊΠ»ΡΡΠ΅Π½ΠΈΡ 5qΠ‘ΠΠ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Ρ Π΄Π΅Π±ΡΡΠΎΠΌ Π±ΠΎΠ»Π΅Π·Π½ΠΈ Π΄ΠΎ ΠΈ ΠΏΠΎΡΠ»Π΅ 18 ΠΌΠ΅Ρ ΠΆΠΈΠ·Π½ΠΈ.
ΠΡΠΎΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΡΠΏΠΈΠ½Π°Π»ΡΠ½Π°Ρ ΠΌΡΡΠ΅ΡΠ½Π°Ρ Π°ΡΡΠΎΡΠΈΡ ΡΠΈΠΏΠΎΠ² IβIV: ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ
Proximal spinal muscular atrophy (SMA) types I-IV is the most common autosomal recessive neuromuscular disease caused by mutations inΒ the SMN1 gene encoding the survival motor neuron protein. It is characterized by progressive muscle weakness due to injury of the motor neuronsΒ of the anterior horns of the spinal cord. The classification of the disease is based on the time of its onset, severity, and survival. The detectionΒ of the major mutation of exon 7 and/or 8 deletion in the SMN1 gene is a qualitative reliable and sensitive diagnostic test. The SMN1 geneΒ has the almost complete homolog SMN2 gene, which hampers the analysis of heterozygous carriage of the disease. So the determination of theΒ carriage status is based on the quantitative analysis of the number of SMN1 gene copies. The paper covers problems and new possibilities in themolecular genetic diagnosis of proximal SMA.ΠΡΠΎΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΡΠΏΠΈΠ½Π°Π»ΡΠ½Π°Ρ ΠΌΡΡΠ΅ΡΠ½Π°Ρ Π°ΡΡΠΎΡΠΈΡ (Π‘ΠΠ) ΡΠΈΠΏΠΎΠ² IβIV β Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΠ°ΡΡΠΎΠ΅ Π°ΡΡΠΎΡΠΎΠΌΠ½ΠΎ-ΡΠ΅ΡΠ΅ΡΡΠΈΠ²Π½ΠΎΠ΅ Π½Π΅ΠΉΡΠΎΠΌΡΡΠ΅ΡΠ½ΠΎΠ΅Β Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅, Π²ΡΠ·ΡΠ²Π°Π΅ΠΌΠΎΠ΅ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ SMN1, ΠΊΠΎΠ΄ΠΈΡΡΡΡΠ΅ΠΌ Π±Π΅Π»ΠΎΠΊ Π²ΡΠΆΠΈΠ²Π°Π΅ΠΌΠΎΡΡΠΈ ΠΌΠΎΡΠΎΠ½Π΅ΠΉΡΠΎΠ½ΠΎΠ². Π₯Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΠ΅ΡΡΡ ΠΏΡΠΎΠ³ΡΠ΅ΡΡΠΈΡΡΡΡΠ΅ΠΉ ΠΌΡΡΠ΅ΡΠ½ΠΎΠΉ ΡΠ»Π°Π±ΠΎΡΡΡΡ Π²ΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅ ΠΏΠΎΡΠ°ΠΆΠ΅Π½ΠΈΡ Π΄Π²ΠΈΠ³Π°ΡΠ΅Π»ΡΠ½ΡΡ
Π½Π΅ΠΉΡΠΎΠ½ΠΎΠ² ΠΏΠ΅ΡΠ΅Π΄Π½ΠΈΡ
ΡΠΎΠ³ΠΎΠ² ΡΠΏΠΈΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ·Π³Π°. ΠΠ»Π°ΡΡΠΈΡΠΈΠΊΠ°ΡΠΈΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ ΠΎΡΠ½ΠΎΠ²Π°Π½Π° Π½Π° Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ Π΅Π³ΠΎ Π½Π°ΡΠ°Π»Π°, ΡΡΠΆΠ΅ΡΡΠΈ ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΈ ΠΏΡΠΎΠ΄ΠΎΠ»ΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΆΠΈΠ·Π½ΠΈ. ΠΡΡΠ²Π»Π΅Π½ΠΈΠ΅ ΠΌΠ°ΠΆΠΎΡΠ½ΠΎΠΉ ΠΌΡΡΠ°ΡΠΈΠΈ Π΄Π΅Π»Π΅ΡΠΈΠΈ ΡΠΊΠ·ΠΎΠ½ΠΎΠ² 7 ΠΈ/ΠΈΠ»ΠΈ 8 Π³Π΅Π½Π° SMN1 ΡΠ²Π»ΡΠ΅ΡΡΡ ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΌ, Π½Π°Π΄Π΅ΠΆΠ½ΡΠΌ ΠΈ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΡΠΌ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΡΠ΅ΡΡΠΎΠΌ.Β ΠΠ΅Π½ SMN1 ΠΈΠΌΠ΅Π΅Ρ ΠΏΠΎΡΡΠΈ ΠΏΠΎΠ»Π½ΡΠΉ Π³ΠΎΠΌΠΎΠ»ΠΎΠ³ β Π³Π΅Π½ SMN2, ΡΡΠΎ Π·Π°ΡΡΡΠ΄Π½ΡΠ΅Ρ Π°Π½Π°Π»ΠΈΠ· Π³Π΅ΡΠ΅ΡΠΎΠ·ΠΈΠ³ΠΎΡΠ½ΠΎΠ³ΠΎ Π½ΠΎΡΠΈΡΠ΅Π»ΡΡΡΠ²Π° Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ. ΠΠΎΡΡΠΎΠΌΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΡΡΠ°ΡΡΡΠ° Π½ΠΎΡΠΈΡΠ΅Π»Ρ ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΎ Π½Π° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΌ Π°Π½Π°Π»ΠΈΠ·Π΅ ΡΠΈΡΠ»Π° ΠΊΠΎΠΏΠΈΠΉ Π³Π΅Π½Π° SMN1. Π ΡΠ°Π±ΠΎΡΠ΅ ΠΎΡΠ²Π΅ΡΠ°ΡΡΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΠΈ Π½ΠΎΠ²ΡΠ΅ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ Π² ΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ΅ ΠΏΡΠΎΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΠΉ Π‘ΠΠ
ΠΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΡΠΈΠ½Π΄ΡΠΎΠΌΠ° ΠΠΎΡβΠΡΠ½ΡΡΡΠ°βΠ¨Π°Π°ΡΠ°, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΠΎΠ³ΠΎ Π²Π½ΠΎΠ²Ρ Π²ΡΡΠ²Π»Π΅Π½Π½ΡΠΌΠΈ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ NR2F1
BoschβBoonstraβSchaaf optic atrophy is autosomal dominant disorder caused by mutations in the NR2F1 gene. Its common features include optic atrophy and / or hypoplasia, developmental delay, intellectual disability, attention deficit disorder, autism spectrum disorder, seizures, hearing defects, spasticity, hypotonia, and thinning of the corpus callosum. We report of the clinical and genetic characteristics of two patients with Bosch-Boonstra-Schaaf syndrome with newly detected of the missense mutations Ρ.329T>C (p.Phe110Ser) and Ρ.413G>A (p.Cys138Tyr) in the gene NR2F1. The existence of a polymorphism of the clinical manifestations of the syndrome has been shown, and the necessity of using exome sequencing in the diagnosis of neuro-ophthalmic diseases has been substantiated.Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΠΎΡβΠΡΠ½ΡΡΡΠ°βΠ¨Π°Π°ΡΠ° β Π°ΡΡΠΎΡΠΎΠΌΠ½ΠΎ-Π΄ΠΎΠΌΠΈΠ½Π°Π½ΡΠ½ΠΎΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅, ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»Π΅Π½Π½ΠΎΠ΅ ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Π² Π³Π΅Π½Π΅ NR2F1. ΠΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΡΡ ΡΠΎΡΠ΅ΡΠ°Π½ΠΈΠ΅ΠΌ Π°ΡΡΠΎΡΠΈΠΈ ΠΈ / ΠΈΠ»ΠΈ Π³ΠΈΠΏΠΎΠΏΠ»Π°Π·ΠΈΠΈ Π·ΡΠΈΡΠ΅Π»ΡΠ½ΡΡ
Π½Π΅ΡΠ²ΠΎΠ², Π·Π°Π΄Π΅ΡΠΆΠΊΠΎΠΉ ΠΌΠΎΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°Π·Π²ΠΈΡΠΈΡ, ΠΈΠ½ΡΠ΅Π»Π»Π΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠΌ Π΄Π΅ΡΠΈΡΠΈΡΠΎΠΌ, ΡΡΠ΄ΠΎΡΠΎΠ³Π°ΠΌΠΈ, Π³ΠΈΠΏΠΎΡΠΎΠ½ΠΈΠ΅ΠΉ ΠΈ Π³ΠΈΠΏΠΎΠΏΠ»Π°Π·ΠΈΠ΅ΠΉ ΠΌΠΎΠ·ΠΎΠ»ΠΈΡΡΠΎΠ³ΠΎ ΡΠ΅Π»Π°. Π ΡΡΠ°ΡΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΈΠ΅ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ 2 Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ ΡΠΈΠ½Π΄ΡΠΎΠΌΠΎΠΌ ΠΠΎΡβΠΡΠ½ΡΡΡΠ°βΠ¨Π°Π°ΡΠ° Ρ Π²Π½ΠΎΠ²Ρ Π²ΡΡΠ²Π»Π΅Π½Π½ΡΠΌΠΈ ΠΌΠΈΡΡΠ΅Π½Ρ-ΠΌΡΡΠ°ΡΠΈΡΠΌΠΈ Ρ.329Π’>Π‘ (p.Phe110Ser) ΠΈ Ρ.413G>A (p.Cys138Tyr) Π² Π³Π΅Π½Π΅ NR2F1. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ ΡΡΡΠ΅ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΏΠΎΠ»ΠΈΠΌΠΎΡΡΠΈΠ·ΠΌΠ° ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ ΡΠΈΠ½Π΄ΡΠΎΠΌΠ° ΠΈ ΠΎΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Π° Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΡΠ΅ΠΊΠ²Π΅Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΠ·ΠΎΠΌΠ° Π² Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ΅ Π½Π΅ΠΉΡΠΎΠΎΡΡΠ°Π»ΡΠΌΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ
Differential diagnosis of myopathy and multiple epiphysal dysplasia caused by mutations in the <i>COMP</i> gene in children
Background. Multiple epiphysal dysplasia (MED) type 1 (OMIM: 132400) is one of 7 genetic variants of this group of skeletal dysplasias described to date. The disease is caused by mutations in the COMP gene located on chromosome 19p13.1. The presence of muscle hypotonia and ligamentous laxity, as well as a moderate increase in the level of creatinephosphokinase activity, can lead to misdiagnosis of myopathy.Objective: to analyze the clinical and genetic characteristics of type 1 MED caused by mutations in the COMP gene in a series of Russian patients. Differential diagnosis was focused on the distinctive features of the disorder and hereditary myopathies.Materials and methods. We observed 8 patients from 7 families aged 7 to 15 years with MED type 1 caused by heterozygous mutations in the COMP gene. To confirm the diagnosis, the following methods were used: genealogical analysis, clinical examination, neurological examination with psycho-emotional testing, radiography and targeted sequencing of a panel consisting of 166 genes responsible for the development of inherited skeletal pathology.Results. Case history, clinical, radiological and genetic characteristics of 8 patients with MED type 1 caused by mutations in the COMP gene were analyzed. The first clinical manifestations of the disease were recorded from the age of 2β3 years and were characterized by gait disturbances, muscle weakness, difficulties with climbing stairs, frequent falls when walking, the inability to get up from the floor and from a squatting position and hypermobility of the joints. Electroneuromyographic study did not reveal the signs of miopathy. In two patients, a moderate increase in the creatinekinase level of up to 250β360 u / l was found. All patients were surveyed by neurologists for several years with a clinical diagnosis of congenital myopathy. At the age of 5β6 years patients COMPlained knee and ankle pain, which was assumed as rheumatic arthropathy. X-ray examination revealed typical signs of deficient ossification of the epiphyses. The next-generation sequencing analysis revealed seven single nucleotide variants in the COMP gene that lead to MED type 1. Three of the found variants here identified for the first time. As previously described, the majority of nucleotide variants (six out of seven) were localized in the 8β14 exons of the COMP gene and led to amino acid substitutions in calmodulin-like protein domain repeats, and only one substitution was localized in the C-terminal region of the protein molecule.Conclusion. In most patients with MED caused by mutations in the COMP gene, the first symptoms of the disease are gait disturbance, muscle weakness, and GowersΒ» maneuvers. The presence of these symptoms, along with a moderate increase in the level of creatinephosphokinase activity, often precedes the onset of clinical manifestations of skeletal dysplasia, leading to a misdiagnosis with myopathies. Accession of expressive arthralgias to these symptoms was mistakenly identified as reactive arthritis. X-ray examination of patientsβ long bones helps to suspect the presence of MED. This X-ray imaging shows specific signs of epiphyses damage. A molecular-genetic analysis needs to be done to diagnose the genetic variant, caused by mutations in gene COMP
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