Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0026827 (hypotonia)
 5,860 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We describe two female siblings with similar clinical features consisting of hydrocephalus, scaphocephaly, hypotonia, mongoloid eye slant, blepharophimosis, micrognathia, supernumerary mouth frenula and mental retardation. Routine cytogenetic studies in the elder patient did not reveal any abnormality, and initially it was assumed that the syndrome had an autosomal recessive inheritance. However, a slightly larger chromosome 13 was seen in routine G-banded metaphases of the mother and the youngest of the two siblings. A shorter chromosome 15 was detected in the mother only. High resolution banding showed that the abnormal chromosome 13 contained an extra G-positive band at 13q12. The short chromosome 15 in the mother appeared to have a deletion of band q12. Fluorescence in situ hybridization using DNA markers specific to chromosomes 13 and 15 unequivocally showed that the mother was a carrier of a balanced reciprocal translocation t(13;15)(q12;q13), whereas the youngest sibling's karyotype was 46,XX,-13,+der(15)t(13;15)(q12;q13)mat, resulting in partial monosomy 13pter----q12 and partial trisomy 15pter----q13. The proband is thus trisomic for the critical region responsible for Prader-Willi syndrome and Angelman syndrome; this was confirmed by DNA analysis demonstrating one paternal and two maternal alleles from multiallelic marker loci mapping to 15q11-q13. This report illustrates the sensitivity and specificity offered by fluorescence in situ hybridization and its usefulness in the diagnosis and delineation of subtle chromosomal rearrangements.
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PMID:Reciprocal translocation between the proximal regions of the long arms of chromosomes 13 and 15 resulting in unbalanced offspring: characterization by fluorescence in situ hybridization and DNA analysis. 135 72

A patient with a syndrome consisting of blepharophimosis, simple ears, hypoplastic teeth, developmental delay, and hypotonia is described. Previous case reports are reviewed and a differential diagnosis is described. Many of the features in the subject are similar to those described in two previous reports and they constitute a distinct syndrome.
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PMID:The Ohdo blepharophimosis syndrome: a third case. 200 85

Recently, we examined a small-for-gestational age infant with blepharophimosis, congenital contractures of elbows, hips, and knees, fixed facial expression, and hypotonia. These congenital anomalies are consistent with a diagnosis of the Marden-Walker syndrome. The infant also had an omphalomesenteric duct, left hypoplastic kidney, hypoplastic right lower lobe of the lung, and displacement of the larynx to the right; these anomalies have not been described previously in this syndrome. A summary of the clinical manifestations of the previously reported patients is presented.
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PMID:Expanded spectrum of findings in Marden-Walker syndrome. 220 17

The Marden-Walker syndrome was first described in 1966. The main features are microcephaly, peculiar facies due to blepharophimosis, micrognathia, low-set ears, joint contractures, muscular hypotonia, growth failure, and developmental delay. We report the case of a child presenting with almost all of these features, but with muscular hypertonia. Differential diagnosis includes Schwartz-Jampel syndrome. Pathogenesis is unknown.
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PMID:[Craniofacial dysmorphism with flexion of the fingers. Marden-Walker syndrome?]. 629 28

We have studied a sibship with one confirmed and three probable cases of the Marden-Walker syndrome (MWS). Our patient had the major manifestations of blepharophimosis and squint; narrowly arched palate with micrognathia; small mouth and mouth-breathing; facial deformities and distortions; congenital muscle weakness with resulting scoliosis; mild pectus excavatum; camptodactylies and hip and finger joints subluxation. In addition, he had small, apparently low-set and slightly malformed auricles with a unilateral preauricular tag. However, he had no apparent renal or cardiovascular involvement. Results of CPK, EMG, and of histochemical, light microscopic, and ultrastructural studies of muscle biopsy do not suggest a primary myopathy but rather CNS related weakness/hypotonia with small muscle mass and hypoactive DTRs. This pathogenetic hypothesis is confirmed by the presence of severe mental retardation and minor brain changes suggesting cortical atrophy. In five previously reported cases there has been microcephaly. Phenotype analysis does not convince that the MWS is a true malformation syndrome, but rather hints at the possibility of a congenital metabolic dysplasia. Genetic analysis demonstrated autosomal-recessive inheritance in this and two other instances; primarily sporadic occurrence leaves open the possibility of genetic heterogeneity.
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PMID:Brief clinical report and review: the Marden-Walker syndrome. 708 Dec 92

A case of deletion of the short arm of chromosome 3 (46,XY,del(3)(p253) is described. The patient is a youth of 18 years in an institution for the mentally retarded. Phenotypically, he presents congenital heart disease, hypertelorism, ptosis, epicanthus, blepharophimosis, strabismus, nystagmus, synophrys, low-set ears, frequent infections, epilepsy (abnormal EEG and grand mal seizures), "rocker bottom" feet, flat occiput and muscular hypotonia. The parents are healthy and with normal karyotypes. A silent allele in the GPT system was found in the mother, the propositus and 4 of the 5 siblings.
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PMID:Partial deletion of the short arm of chromosome 3. 722 94

We describe a combination of multiple congenital anomalies, severe psychomotor retardation and symmetrical circumferential skin creases of arms and legs in a 4.5-year-old male. Craniofacial anomalies included: a high forehead, elongated face, bitemporal sparseness of hair, broad eyebrows, blepharophimosis, bilateral microphthalmia and microcornea, severe optic nerve hypoplasia, epicanthic folds, telecanthus, broad nasal bridge, puffy cheeks, microstomia, cleft palate, enamel hypoplasia, micrognathia, microtia with stenotic ear canals and posteriorly angulated ears. Head circumference was on the 10th centile and a CT scan showed dilated lateral ventricles. Intracranial pressure was not increased. Other abnormalities included: short stature, loose skin, hypotonia, pectus excavatum, inguinal and umbilical hernias, severe scoliosis, hypoplastic scrotum, long fingers and overlapping toes. Echocardiography showed tricuspid regurgitation. Chromosomes were apparently normal. Differentiation from "Michelin tire baby syndrome" and amniotic band sequence is discussed.
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PMID:New syndrome?: MCA/MR syndrome with multiple circumferential skin creases. 905 67

We report on two sibs, a 2.5-year-old girl and a 10-month-old boy, with a hitherto unreported combination of congenital anomalies: blepharophimosis, ptosis, midface hypoplasia, abnormal palate, low anterior and posterior hairlines, displaced hair whorl, apparently low-set and abnormally shaped ears, trigonocephaly, dental anomalies, laryngomalacia, sensorineural hearing loss, genital anomalies, hypotonia, and mental retardation. The occurrence of a similar pattern of anomalies in two sibs of opposite sex suggests autosomal recessive inheritance. To our knowledge, this combination of anomalies has not been reported previously, and thus we propose it to be a formal genesis syndrome.
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PMID:Blepharophimosis, minor facial anomalies, genital anomalies, and mental retardation: report of two sibs with a unique syndrome. 1052 53

De novo translocation (2;18)(q21;q22) in a patient with severe epilepsy developmental delay and mild dysmorphism: We report on a patient presenting with severe epilepsy, hypotonia, developmental delay, blepharophimosis, low-set ears, camptodactyly and tapering fingers, and cutaneous syndactyly of toes II and III of the right foot. The MRI showed some loss of volume of the white matter and delayed myelination, no other specific anomalies were present. Chromosome analysis revealed a translocation involving chromosomes 2 and 18, which was characterized further by FISH using band-specific probes. The possibility of a submicroscopic deletion is discussed and the patient is compared with patients reported in the literature with either 2q21 or 18q22 deletion.
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PMID:De novo translocation (2;18)(q21;q22) in a child with severe epilepsy, developmental delay and mild dysmorphism. 1104 30

In this report, we present a 14-year-old girl, born to consanguineous parents, who presented with severe mental retardation, hypotonia, short stature, and congenital joint contractures. The craniofacial features were scaphocephaly, thin/long and immobile face, marked hypoplasia of the midface, temporal narrowness, blepharophimosis, palpebral ptosis, and strabismus. The combination of such a distinctive craniofacial appearance and psychomotor retardation allows us to recognize a new case of the Marden-Walker syndrome. Our patient represents one of the rare cases in which consanguineous mating supports the autosomal-recessive pattern of inheritance of this condition. Furthermore, through refining the phenotype of a surviving patient, this report may contribute to a better recognition of this disorder in older affected children.
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PMID:Additional case of Marden-Walker syndrome: support for the autosomal-recessive inheritance adn refinement of phenotype in a surviving patient. 1129 26


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