Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report clinical features and course of Lowe's syndrome with regard to three cases. All of them are males and clear inherited transmission was demonstrated in patients 2 and 3 and was suggested in patient 1. Age at the moment of diagnosis oscillated between 7 and 18 years. The three cases showed weight and height percentiles under p 3. Congenital bilateral cataract and search nystagmus were found in all of them. Profound mental retardation, muscular hypotonicity and diminished or absent tendon reflexes constituted distinctive findings in the neurological area. Among renal manifestations stood out proteinuria, generalized hyperaminoaciduria and tubular renal acidosis, they carried from rickets and growth failure. Cases 1 and 2 has characteristic facies. Patient 1 died after series of recurrent bronchial and pulmonary infections: death happened during Fanconi's syndrome evolution. Cases 2 and 3 are in a stabilized period, with a longer life expectation, although they suffer from residual moderate renal failure.
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PMID:[Oculocerebrorenal sydrome of Lowe. Apropos of three cases]. 236

We describe the long-term follow-up of 50 Fanconi's anaemia patients who were transplanted from a related donor with a median follow-up of >6 years. The survival estimate was 74.4% at 54 months and 58.5% at 100 months. All patients were conditioned with low-dose cyclophosphamide and thoraco-abdominal irradiation. Acute graft-versus-host disease (GvHD) of grade II or more developed in 26 patients and chronic GvHD developed in 30/43 (69.9%) patients. The survival of patients without chronic GvHD (n = 13) was 100%. In addition to chronic GvHD, 20 pre-transplant transfusions was shown to have an adverse impact on survival by multivariate analysis (relative risk = 7.08, P = 0.0003). Prospective follow-up of growth and endocrine function could be performed in 31 patients. Of 20 boys, six have already reached normal puberty within the expected time. Among the 11 girls, three were at the pubertal age at the time of analysis. Growth retardation was common, whereas late complications (e.g. peripheral hypothyroidism, cataract) were rare. However, the most important long-term complication was the occurrence of cancer in seven patients (8-year projected incidence 24%). Among the 32 survivors, 27 (84.5%) had a normal and four a moderately reduced performance status, and all achieved complete engraftment with donor cells. Therefore transplantation was able to cure these patients who remain at high risk for developing late complications. Clearly, a genetic predisposition and chronic GvHD could have led to the development of these cancers. However, we cannot completely rule out irradiation as a cofactor in the genesis of these cancers, and therefore no longer use irradiation for the conditioning of Fanconi's anaemia patients.
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PMID:Transplantation for Fanconi's anaemia: long-term follow-up of fifty patients transplanted from a sibling donor after low-dose cyclophosphamide and thoraco-abdominal irradiation for conditioning. 979 17

The oculocerebrorenal syndrome of Lowe (OCRL) is a rare X-linked recessively inherited disease characterized by a severe pleiotropic phenotype including mental retardation, bilateral congenital cataract, and renal Fanconi syndrome. The gene responsible for OCRL encodes an inositol polyphosphate-5-phosphatase. We performed mutation analysis in 36 families and characterized 27 new mutations with two of them being recurrent mutations. The panel of mutations consisted of 27 truncating mutations (frameshift, nonsense, splice site mutations, and large genomic deletions), one in-frame deletion, and six missense mutations. The four large genomic deletions occurred in the first half of the gene, whereas all the remaining mutations took place in the second part of the gene and were concentrated in a few exons. This distribution may be of interest in terms of screening strategy when looking for unknown mutations. Haplotyping of the families was performed to analyze segregation of the mutated loci, and revealed a somatic mosaicism in one family. This is the second case of mosaicism we characterized in a total panel of 44 unrelated families affected by Lowe's syndrome. Considering the low number of families investigated, it appeared that somatic and germinal mosaicisms are quite common in this disease and must be taken into account for genetic counseling.
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PMID:OCRL1 mutation analysis in French Lowe syndrome patients: implications for molecular diagnosis strategy and genetic counseling. 1092 37

Oculocerebrorenal Lowe syndrome is a rare X-linked disorder characterized by bilateral cataract, mental retardation and renal Fanconi syndrome. The Lowe syndrome protein Ocrl1 is a PIP2 5-phosphatase, primarily localized to the trans-Golgi network (TGN), which 'loss of function' mutations result in PIP2 accumulation in patient's cells. Although PIP2 is involved in many cell functions including signalling, vesicle trafficking and actin polymerization, it has been difficult so far to decipher molecular/cellular mechanisms responsible for Lowe syndrome phenotype. We have recently shown that, through its C-terminal RhoGAP domain, Ocrl1 forms a stable complex with Rac GTPase within the cell. In line with this finding, we report here that upon epidermal growth factor induced Rac activation in COS-7 cells, a fraction of Ocrl1 translocates from TGN to plasma membrane and concentrates in membrane ruffles. In order to investigate the functionality of Ocrl1 in plasma membrane, we have analysed PIP2 distribution in human dermal fibroblasts (HDFs) from Lowe patients versus control HDFs. As revealed by both immunodetection and green fluorescent protein-PH binding, PIP2 was found strikingly to accumulate in PDGF induced ruffles in Lowe HDFs when compared with control. This suggests that Ocrl1 is active as a PIP2 5-phosphatase in Rac induced membrane ruffles. Cellular properties such as cell migration and establishment of cell-cell contacts, which depend on ruffling and lamellipodia formation, should be further investigated to understand the pathophysiology of Lowe syndrome.
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PMID:Lowe syndrome protein Ocrl1 is translocated to membrane ruffles upon Rac GTPase activation: a new perspective on Lowe syndrome pathophysiology. 1582 1

Lowe (oculocerebrorenal) syndrome is an X-linked recessive disorder characterised by congenital cataract, glaucoma, cognitive developmental delay and renal tubular Fanconi syndrome. In this report we present a patient with Lowe syndrome with a tigroid pattern on cranial MRI, which has not been previously reported as an imaging feature of this syndrome.
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PMID:Tigroid pattern on magnetic resonance imaging in Lowe syndrome. 1902 72

Lowe's syndrome is a rare inherited metabolic disorder characterized by mental retardation, kidney malfunction, and abnormalities of the eyes and bones. A 4 month-old child with Lowe's and Fanconi's syndrome, undergoing bilateral congenital cataract surgery, is presented. Preoperative electrolyte imbalance was corrected by potassium, calcium, magnesium, phosphate, and bicarbonate supplementation. Anesthesia was administered uneventfully using appropriate anesthetic agents and monitoring. Adequate preoperative evaluation and optimization, along with selection of anesthetic agents and fluid and electrolyte management with appropriate perioperative monitoring, is key to a successful outcome.
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PMID:Lowe's syndrome with Fanconi syndrome for ocular surgery: perioperative anesthetic considerations. 2110 39

The oculocerebrorenal syndrome of Lowe (OCRL) is an X-linked disorder characterized by congenital cataracts, renal tubular dysfunction, cognitive problems and maladaptive behavior. The syndrome is caused by pathogenic DNA variations in the X-linked OCRL1 gene. A 24-month-old boy was referred to our hospital with delayed motor milestones, hypotonia, involuntary purposeless movements of hands and feet, congenital cataract, severe feeding difficulties, and failure to thrive. Physical examination at the age of 24 months revealed a body weight of 7350 g (-5.1 SDS). Length was 71 cm (-5.1 SDS) and head circumference 45 cm (-3.9 SDS). He had deep-set small eyes, frontal bossing, flat occiput, parietal prominence, bilateral congenital cataract, cryptorchid left testis, joint hypermobility, decreased muscle tone, and hyporeflexia. Biochemical analysis revealed the characteristic findings of renal Fanconi syndrome. Genetic analysis showed a novel pathogenic DNA variation (c.1528C>T) in exon 15 of the OCRL1 gene. Clinical findings and genetic analysis confirmed the diagnosis of OCRL syndrome.
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PMID:A novel pathogenic DNA variation in the OCRL1 gene in Lowe syndrome. 2144 31

Oculocerebrorenal syndrome, also known as Lowe syndrome, is an X-linked recessive disorder that predominantly affects males and is characterized by growth and mental retardation, congenital cataract and renal Fanconi syndrome. OCRL1 is the gene responsible for Lowe syndrome and encodes an inositol polyphosphate-5-phosphatase. We present an 11-year-old boy with Lowe syndrome, who had a de novo frameshift mutation in exon 22 that resulted in amino acid substitution and premature codon termination at position 788. This is a new mutation involving the OCRL1 gene in a patient with Lowe syndrome of Turkish origin and expands the mutation spectrum in this disorder.
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PMID:A novel OCRL1 gene mutation in a Turkish child with Lowe syndrome. 2369 38

The oculocerebrorenal (OCRL) syndrome, also known as Lowe syndrome (LS), is an X-linked recessive disorder that predominantly affects males and is characterized by growth and mental retardation, congenital cataract and renal Fanconi syndrome. OCRL1 is the gene responsible for LS and encodes an inositol polyphosphate-5-phosphatase. We report a male child from North India, with LS with missense mutation in exon 14 of the OCRL gene.
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PMID:Lowe syndrome - Case report with a novel mutation in the oculocerebrorenal gene. 3212 27