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A Carrier Of Duchenne Muscular Dystrophy In An 8-month-old Girl
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ÀÌÀ±Áø(Lee Yun-Jin) - ºÎ»ê¾ç»ê´ëÇб³ ¾î¸°À̺´¿ø ¼Ò¾ÆÃ»¼Ò³â°ú
¼Ûº¸°æ(Song Bo-Kyung) - ºÎ»ê¾ç»ê´ëÇб³ ¾î¸°À̺´¿ø ¼Ò¾ÆÃ»¼Ò³â°ú
±è¿µ¹Ì(Kim Young-Mi) - ºÎ»ê´ëÇб³ Àǰú´ëÇÐ ¼Ò¾Æ°úÇб³½Ç
³²»ó¿í(Nam Sang-Ook) - ºÎ»ê¾ç»ê´ëÇб³ ¾î¸°À̺´¿ø ¼Ò¾ÆÃ»¼Ò³â°ú
Abstract
Duchenne muscular dystrophy (DMD) is the most common and severe form of childhood muscular dystrophy. Females are affected in rare cases because of its¡¯ X-linked, recessive inheritance. A small number of female DMD carriers have muscle weakness to some extent. A healthy 8-month-old girl was brought to our tertiary center because of the elevated serum liver enzyme (aspartate aminotransferase (AST): 986 IU/mL, alanine aminotransferase (ALT): 1,126 IU/mL), that was first noted 1 month ago when she was hospitalized for an acute respiratory infection. Follow-up her serum liver enzyme, AST and ALT level remained increased to 613 and 1,049 IU/mL, respectively without serologic evidence of viral hepatitis. Serum creatinine kinase (CK) level was highly elevated to 5,245 U/L. She showed normal development. Pseudohypertrophy of bilateral calf muscle was not observed, and Gowers¡¯ sign was not seen because of her young age. Electromyography and cardiac echocardiography showed no abnormal findings. A multiplex ligation-dependent probe amplification confirmed the heterozygote deletion mutation of DMD gene in exon 10-17. The result of karyotyping was normal 46,XX. She was diagnosed as an asymptomatic DMD carrier. Female carriers are usually asymptomatic but may have an elevated serum CK and/or mild calf hypertrophy. A girl with persistent elevated liver enzyme and CK level should be evaluated for the neuromuscular disease including DMD, despite her normal motor activity.
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Duchenne muscular dystrophy, Girl, Female
KMID :
0391520140220030160
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