hyperargininemia/seizures

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Arginase deficiency presenting with convulsions.

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Late onset arginase deficiency presenting with encephalopathy and midbrain hyperintensity.

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Urea cycle disorders (UCD) are very rare metabolic disorders that present with encephalopathy and hyperammonemia. Of the UCDs, Arginase deficiency (ARD) is the rarest and presents in childhood with a progressive spastic diplegia or seizures. Acute presentation in adulthood is extremely unusual.[1]

Epilepsia partialis continua and generalized nonconvulsive status epilepticus during the course of argininemia: a report on two cases.

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Argininemia is a rare inherited disorder of the urea cycle because of a deficiency of the enzyme arginase I causing an increase of arginine and guanidino compounds in the blood, urine, and cerebrospinal fluid. The clinical picture is characterized by a mild cognitive dysfunction, progressive

Arginase Deficiency

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Clinical characteristics: Arginase deficiency in untreated individuals is characterized by episodic hyperammonemia of variable degree that is infrequently severe enough to be life threatening or to cause death. Most commonly, birth and early childhood are normal.

[Late diagnosis of congenital argininemia during administration of sodium valproate].

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Congenital hyperargininaemia is a rare condition transmitted as an autosomal dominant trait. Following a one-year free interval, repeated vomiting, psychomotor regression and spastic paraparesis with talipes equinus progressively develop. The diagnosis, confirmed by arginine assays in blood and

A simple screening test for arginase deficiency (hyperargininemia).

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A simple fluorescent spot screening test has been developed for the identification of individuals with arginase deficiency (hyperargininemia). The assay is based on the coversion of arginine to ornithine and urea by arginase present in 1/8 inch disc of dried blood on filter paper. The enzyme

In vitro inhibition of Na+,K(+)-ATPase activity from rat cerebral cortex by guanidino compounds accumulating in hyperargininemia.

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Hyperargininemia is a metabolic disorder biochemically characterized by tissue accumulation of arginine (Arg) and other guanidino compounds (GC). Convulsions, lethargy and psychomotor delay are predominant clinical features of this disease. Considering that some GC are epileptogenic and cause a

[Advances in clinical and molecular genetics studies on argininemia].

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Argininemia is a rare, autosomal recessive, metabolic disorder caused by an hereditary deficiency of hepatocytes arginase due to ARG1 gene defect. Arginase is the final enzyme in the urea cycle, catalyzing the hydrolysis of arginine to ornithine and urea. Research advances in the clinical

A successful trial of enzyme replacement therapy in a case of argininemia.

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A 5-year-old boy with severe mental retardation and spastic quadriplegia accompanied by tonic seizures and hyperammonemia was diagnosed as having argininemia due to an arginase deficiency in his erythrocytes. His motor and mental abilities began to deteriorate at the age of 3 years. Thereafter, he

Prenatal diagnosis for arginase deficiency: a case study.

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Arginase deficiency is a rare, autosomal recessive, disorder of the urea cycle characterized by mild hyperammonaemia, hyperargininaemia, dibasic aminoaciduria and orotic aciduria, associated with progressive spastic tetraplegia, seizures, psychomotor retardation, and growth failure. We report a

Hyperargininemia Experiences over Last 7 Years from a Tertiary Care Center.

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Several Enzymes carry out chemical reactions for the production of energy and carrying out normal functioning of the organism. Disorders of these functions can result in permanent damage to the child affecting multiple systems. Most metabolic disorders are at least controllable and

Rescue of the Functional Alterations of Motor Cortical Circuits in Arginase Deficiency by Neonatal Gene Therapy.

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Arginase 1 deficiency is a urea cycle disorder associated with hyperargininemia, spastic diplegia, loss of ambulation, intellectual disability, and seizures. To gain insight on how loss of arginase expression affects the excitability and synaptic connectivity of the cortical neurons in the

Human recombinant arginase enzyme reduces plasma arginine in mouse models of arginase deficiency.

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Arginase deficiency is caused by deficiency of arginase 1 (ARG1), a urea cycle enzyme that converts arginine to ornithine. Clinical features of arginase deficiency include elevated plasma arginine levels, spastic diplegia, intellectual disability, seizures and growth deficiency. Unlike other urea

In vitro stimulation of oxidative stress in cerebral cortex of rats by the guanidino compounds accumulating in hyperargininemia.

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Hyperargininemia is a metabolic disorder biochemically characterized by tissue accumulation of arginine and other guanidino compounds. Convulsions, lethargy and psychomotor delay or cognitive deterioration are predominant clinical features of this disease. Although neurologic symptoms predominate in

[Seven patients of argininemia with spastic tetraplegia as the first and major symptom and prenatal diagnosis of two fetuses with high risk].

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OBJECTIVE Argininemia is a rare disorder of urea cycle defect. The clinical manifestations of this disorder are similar to those of cerebral palsy so that the diagnosis is usually much delayed. This study aimed to investigate the phenotypes and genotypes of seven Chinese patients suffering from

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