We report on a 28-year-old man with trisomy 7q34-qter and monosomy 15q26.3-qter caused by a paternal balanced chromosomal translocation, t(7;15)(q34;q26.3). He had bilateral congenital glaucoma (buphthalmos), as well as typical manifestations of partial trisomy 7q. To our knowledge, this is the second description of a possible relation between congenital glaucoma and 7q trisomy. He also had some Silver-Russell syndrome features, such as short stature of prenatal onset, a characteristic triangular face, clinodactyly of the fifth fingers, and body asymmetry. Fluorescence in situ hybridization analysis on his chromosomes revealed that one copy of the insulin-like growth factor 1 receptor gene (IGF1R) at 15q25-q26 was deleted, suggesting a possible role of IGF1R in the SRS phenotype.
We report on a 28-year-old man with trisomy 7q34-qter and monosomy 15q26.3-qter caused by a paternal balanced chromosomal translocation, t(7;15)(q34;q26.3). He had bilateral congenital glaucoma (buphthalmos), as well as typical manifestations of partial trisomy 7q. To our knowledge, this is the second description of a possible relation between congenital glaucoma and 7q trisomy. He also had some Silver-Russell syndrome features, such as short stature of prenatal onset, a characteristic triangular face, clinodactyly of the fifth fingers, and body asymmetry. Fluorescence in situ hybridization analysis on his chromosomes revealed that one copy of the insulin-like growth factor 1 receptor gene (IGF1R) at 15q25-q26 was deleted, suggesting a possible role of IGF1R in the SRS phenotype.
A 42-year-old woman with distal myopathy with rimmed vacuoles had intracytoplasmic inclusion bodies similar to those described in reducing body myopathy. Since these inclusions were found in fibers with high acid phosphatase activity and occasional rimmed vacuoles, their formation appeared to correlate with active myofibrillar degeneration, but their origin remains unknown.
Clinical, neurophysiological and neuropathological investigations were performed on five patients from two families with autosomal dominant distal amyotrophy followed by spastic paraplegia and with a positive history in two generations of these two families. All cases in the two families had a benign clinical course, although two mothers could not walk without support at around 60 years old. Neurophysiological studies revealed normal maximumconduction velocities of peripheral sensory and motor nerves, and the central spinal sensory pathway. Distribution of motor nerve conduction velocities in the ulnar nerve had a normal pattern except for one patient who had severe deformities of the cervical vertebrae. The biopsied sural nerve disclosed no distinct abnormalities in any cases. Fromthese results, weconfirmed preservation of the myelinated nerve fibers of motor and sensory peripheral nerves. (Internal Medicine 32: 825-831, 1993)
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