Editorial on Lesch-Nyhan Disease

Sophia Roberts*

Managing Editor, Journal Rare Disorders: Diagnosis & Therapy, United Kingdom

Corresponding Author:
Sophia Roberts
Managing Editor, Journal Rare Disorders
Diagnosis & Therapy, United Kingdom
Tel: +32466900451
E-mail: [email protected]

Received Date: May 05, 2021; Accepted Date: May 17, 2021; Published Date: May 28, 2021

Citation: Roberts S (2021) Editorial on Lesch-Nyhan Disease. J Rare Disorders Diagnosis & Therapy. Vol. 7 No. 5: 4.

 
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Editorial

Lesch-Nyhan disease is a rare and a genetic disorder of purine metabolism characterized by the deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HPRT). It is associated with 3 major clinical elements: overproduction of uric acid, neurologic disability, and behavioral problems. Purines are nitrogen-containing compounds found in many foods [1]. Uric acid production is due to deficient recycling and enhanced synthesis of purine bases. Uric acid levels are abnormally high in people with Lesch-Nyhan disease; excess uric acid can be released from the blood and build up under the skin and cause gouty arthritis. This can cause sodium urate crystals to form in the joints, kidneys, central nervous system, and other tissues of the body. This condition is inherited in an X-linked recessive pattern, with rare female exceptions, most often affects males. It is approximately 1 in 380,000 individuals [2].

Causes

Mutations in the HPRT1 gene cause Lesch-Nyhan disease that is located on the X chromosome.

Symptoms

The symptoms that people with this disease may have: gouty arthritis, kidney and bladder stones, hemiplegia, hyperuricemia, neurological symptoms (facial grimacing, involuntary writhing, and repetitive movements of the arms and legs), behavioral disturbances, abnormal involuntary muscle movements such as tensing of various muscles, jerking movements, flailing of the limbs, unable to walk and self-injurious behaviour etc. People with Lesch-Nyhan disease usually cannot walk, require assistance sitting, and generally use a wheelchair. Self-injury (including biting and head banging) is the most common and distinctive behavioral problem in individuals with Lesch-Nyhan disease.

Diagnosis

The diagnosis of Lesch-Nyhan disease may be confirmed by a thorough clinical evaluation, including a detailed patient history and specialized blood tests. Children with this disorder have abnormally high concentrations of uric acid in the blood. Diagnosis is suspected when psychomotor delay occurs in a patient with elevated uric acid in blood and urine. Molecular genetic testing confirms the diagnosis [3,4].

Treatment

Uric acid overproduction is managed with allopurinol, urine alkalinization, and hydration. In, Lesch-Nyhan disease the drug allopurinol is used to control the excessive amounts of uric acid and control symptoms associated with excessive amounts of uric acid. There is no standard treatment for neurological or behavioral symptoms associated with this disorder. When kidney stones are present, they may be treated with may be treated with lithotripsy. Self-injury requires physical restraints, behavioral and pharmaceutical treatment. Genetic counseling is recommended [5,6].

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