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Lysosomal diseases are severe genetic disorders affecting children. While treatments are limited, prenatal diagnosis is available, and future therapies like gene therapy show promise.
Area of Science:
- Medical Genetics
- Biochemistry
- Pediatrics
Background:
- Lysosomal diseases are a group of over 30 severe genetic enzymopathies.
- These conditions typically affect children, often leading to fatal outcomes within the first few years of life.
- They exhibit significant heterogeneity in clinical, biological, and molecular manifestations.
Purpose of the Study:
- To review the current understanding of lysosomal diseases.
- To highlight the genetic basis and molecular mechanisms involved.
- To discuss diagnostic and therapeutic prospects.
Main Methods:
- Literature review of genetic enzymopathies.
- Analysis of molecular mechanisms and gene characterization.
- Evaluation of diagnostic and therapeutic strategies.
Main Results:
- Genes responsible for enzyme deficiencies are identified and cloned.
- Causal mutations and molecular mechanisms are increasingly elucidated.
- Prenatal diagnosis is feasible in the absence of effective treatments.
Conclusions:
- Therapeutic options for lysosomal diseases are limited but evolving.
- Substitutive therapy, bone marrow transplantation, and gene therapy offer future hope.
- Continued research is crucial for improving patient outcomes.
Abstract:
Lysosomal diseases are severe genetic enzymopathies generally affecting the child, with a progressively fatal issue in the first few years of life. The group is very heterogeneous regarding: the number of included affections (about 30), as well as the clinical, biological and molecular manifestations. The responsible genes for the respective enzyme deficiencies are located or cloned and the recently developed research allows to characterise the causal mutations and to elucidate the involved molecular mechanisms. In the absence of an efficient therapy a reliable prenatal diagnosis can be proposed. However, therapeutic prospects concerning substitutive therapy, bone marrow transplantation and, in a more long-term, gene therapy are encouraging.