Symptoma

Mucolipidosis Type 4

Mucolipidosis Type IV

The presentation as a cerebral palsy-like encephalopathy may delay diagnosis. [ncbi.nlm.nih.gov]

Any fluorescent lipid present at the plasma membrane was then removed by back-exchange ( 6, 8 ). [doi.org]

This presentation of ML-IV is highly atypical taking into consideration the largest reported skin biopsy-proven series from India. [4] This cohort of 4 patients had a uniform presentation in adolescence with slowly progressive spastic paraparesis in stark [neurologyindia.com]

  • Microdontia

    […] lower lip [ more ] 0000232 Genu recurvatum Back knee Knee hyperextension [ more ] 0002816 Microcephaly Abnormally small skull Decreased circumference of cranium Decreased size of skull Reduced head circumference Small head circumference [ more ] 0000252 Microdontia [rarediseases.info.nih.gov]

  • Corneal Opacity

    It is a progressive disease that usually presents during the first year of life with mental retardation, corneal opacities, and delayed motor milestones. [ingentaconnect.com]

    delayed development of movement and coordination), corneal opacity, retinal degeneration and other ophthalmological abnormalities. [en.wikipedia.org]

    Treatment is based on the signs and symptoms present in each person. 0001344 Aplasia/Hypoplasia of the abdominal wall musculature Absent/small abdominal wall muscles Absent/underdeveloped abdominal wall muscles [ more ] 0010318 Corneal opacity 0007957 [rarediseases.info.nih.gov]

    Mucolipidosis IV (MLIV) is a progressive neurological lysosomal storage disease that usually is evident during the first year of life, and presents with mental retardation, corneal opacities, and delayed developmental milestones. [genedx.com]

  • Retinal Pigmentation

    Our data show that RPE1 (retinal pigmented epithelial 1) cells develop a punctate mitochondrial phenotype within 48 h of siRNA-induced TRPML1-KD (knockdown). [biochemj.org]

    pigmentation 0007703 Biparietal narrowing 0004422 Coarse facial features Coarse facial appearance 0000280 Everted lower lip vermilion Drooping lower lip Outward turned lower lip [ more ] 0000232 Genu recurvatum Back knee Knee hyperextension [ more ] [rarediseases.info.nih.gov]

    Over the first decade of life, progressive retinal degeneration with varying degrees of vascular attenuation, retinal pigment epithelial changes, and optic nerve pallor result in further decrease in vision [ Siegel et al 1998, Altarescu et al 2002, Pradhan [ncbi.nlm.nih.gov]

  • Muscle Hypotonia

    Infants with I-cell disease are typically underweight at birth, with muscle hypotonia and coarse facial features, the full clinical picture of the disorder presenting between 6 and 8 months. [5] Other features include joint stiffness, dislocated hips, [saudija.org]

  • Hyperreflexia

    […] abdominal wall muscles Absent/underdeveloped abdominal wall muscles [ more ] 0010318 Corneal opacity 0007957 Developmental stagnation 0007281 Gait disturbance Abnormal gait Abnormal walk Impaired gait [ more ] 0001288 Ganglioside accumulation 0004345 Hyperreflexia [rarediseases.info.nih.gov]

    Moreover, the trpv1 ( / ) mouse does not develop bladder overactivity during acute bladder inflammation, indicating that TRPV1 is involved in bladder hyperreflexia in inflammation ( 401 ). FIG. 12. [doi.org]

  • Babinski Sign

    sign 0003487 Cerebellar atrophy Degeneration of cerebellum 0001272 Cerebral dysmyelination 0007266 Decreased light- and dark-adapted electroretinogram amplitude 0000654 Dysplastic corpus callosum 0006989 Dystonia 0001332 Generalized hypotonia Decreased [rarediseases.info.nih.gov]

  • Babinski Sign

    sign 0003487 Cerebellar atrophy Degeneration of cerebellum 0001272 Cerebral dysmyelination 0007266 Decreased light- and dark-adapted electroretinogram amplitude 0000654 Dysplastic corpus callosum 0006989 Dystonia 0001332 Generalized hypotonia Decreased [rarediseases.info.nih.gov]

  • Gliosis

    Slaugenhaupt, Behavioral deficits, early gliosis, dysmyelination and synaptic dysfunction in a mouse model of mucolipidosis IV, Acta Neuropathologica Communications, 2, 1, (2014). [doi.org]

You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments. [rarediseases.info.nih.gov]

5 months after treatment all other drugs for pain relief were removed. 6 months after treatment the first bone biopsy showed their first increase in bone density. 7 months after treatment their blood levels were within normal/high range. 11 months after [nzord.org.nz]

treatment ( Table 1 ). [nature.com]

This review provides an update on the ethnic distribution, clinical manifestations, laboratory findings, methods of diagnosis, molecular genetics, differential diagnosis, and treatment of patients with MLIV. [ncbi.nlm.nih.gov]

Because MLIV wasn’t recognized until 1974, little is known about prognosis and life expectancy beyond 30 years of age. Approximately 1 in 125 Ashkenazi Jews is a carrier of Mucolipidosis Type IV. [geneticdiseasefoundation.org]

Prognosis includes, shortened life span, reduced quality of life, and also additional complications with health 11.)Type of Genetic Inheritance Pattern: MLIV is an autosomal recessive pattern 12.) [spark.adobe.com]

The prognosis beyond this age, and the life expectancy of these patients is not known. [doi.org]

Background: Mucolipidosis type IV is an autosomal recessive lysosomal storage disease of unknown etiology. Patients develop corneal clouding, retinal degeneration, spastic quadriparesis, and mental retardation. [n.neurology.org]

The etiology of these disorders remains elusive, but evidence suggests a complex interplay of genetic and environmental factors ( 353 ). [doi.org]

Relevant External Links for MCOLN1 Genetic Association Database (GAD) MCOLN1 Human Genome Epidemiology (HuGE) Navigator MCOLN1 Atlas of Genetics and Cytogenetics in Oncology and Haematology: MCOLN1 No data available for Genatlas for MCOLN1 Gene Mucolipidosis [genecards.org]

Epidemiology Frequency International Sialidosis is a rare disorder that has no racial predilection. [emedicine.medscape.com]

Exposure to air-borne particulate matter (PM) is epidemiologically associated with increased morbidity and mortality and is thought to initiate and exacerbate respiratory disorders such as asthma, cardiovascular complications, and allergy-related immune [doi.org]

Balances summaries of relevant pathophysiology with clear, practical clinical guidance to help you thoroughly understand the underlying science of diseases. [books.google.de]

The physiological role of these complexes in lysosomal function remains to be elucidated, as well as their effect on the pathophysiology of MLIV. [biochemsoctrans.org]

(PMID: 16287144) Bach G … Ekstein J (Human mutation 2005) 3 22 45 60 Molecular pathophysiology of mucolipidosis type IV: pH dysregulation of the mucolipin-1 cation channel. [genecards.org]

Lysosomal multienzyme complex: biochemistry, genetics, and molecular pathophysiology. Prog Nucleic Acid Res Mol Biol. 2001. 69:81-114. [Medline]. Riches WG, Smuckler EA. A severe infantile mucolipidosis. [emedicine.medscape.com]

Most mutations in the MCOLN1 gene result in the production of a nonfunctional protein or prevent any protein from being produced. [checkorphan.org]

The demonstration of Fe 2 buildup in MLIV cells raised the possibility that TRPML1 dissipates lysosomal Fe 2 and prevents its accumulation. [biochemj.org]

Jenny explains: "Pamidronate is a synthetic compound that binds to bone to prevent absorption of bone by osteoclasts. Osteoclasts are bone cells, which break down bone tissue. [nzord.org.nz]

It was suggested that normally TRPML1 prevents overacidification in the lysosomes resulting from the catabolic activity, and thus, overacidification is caused by the malfunction of TRPML1 in MLIV. [nature.com]