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Items: 1 to 20 of 22

1.

Mutant

An altered form of an individual, organism, population, or genetic character that differs from the corresponding wild type due to one or more alterations (mutations). [from NCI]

MedGen UID:
109303
Concept ID:
C0596988
Cell or Molecular Dysfunction
2.

Amyotrophic lateral sclerosis

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease involving both upper motor neurons (UMN) and lower motor neurons (LMN). UMN signs include hyperreflexia, extensor plantar response, increased muscle tone, and weakness in a topographic representation. LMN signs include weakness, muscle wasting, hyporeflexia, muscle cramps, and fasciculations. Initial presentation varies. Affected individuals typically present with either asymmetric focal weakness of the extremities (stumbling or poor handgrip) or bulbar findings (dysarthria, dysphagia). Other findings may include muscle fasciculations, muscle cramps, and labile affect, but not necessarily mood. Regardless of initial symptoms, atrophy and weakness eventually affect other muscles. The mean age of onset is 56 years in individuals with no known family history and 46 years in individuals with more than one affected family member (familial ALS or FALS). Average disease duration is about three years, but it can vary significantly. Death usually results from compromise of the respiratory muscles. [from GTR]

MedGen UID:
274
Concept ID:
C0002736
Disease or Syndrome
3.

Primary lateral sclerosis

A progressive neurodegenerative disorder affecting upper motor neurons, characterized by progressive muscle weakness. [from NCI]

MedGen UID:
57591
Concept ID:
C0154682
Disease or Syndrome
4.

Superoxide dismutase

An oxidoreductase that catalyzes the reaction between SUPEROXIDES and hydrogen to yield molecular oxygen and hydrogen peroxide. The enzyme protects the cell against dangerous levels of superoxide. [from MeSH]

MedGen UID:
52578
Concept ID:
C0038838
Amino Acid, Peptide, or Protein; Enzyme; Pharmacologic Substance
5.

Sclerosis

A pathological hardening or thickening of tissue, especially that of the interstitial substance. [from NCI]

MedGen UID:
48587
Concept ID:
C0036429
Pathologic Function
6.

Accumulation

A state characterized by the gradual increase in entities or substances. [from NCI]

MedGen UID:
883922
Concept ID:
C4055506
Finding
7.

Abnormality of mitochondrial metabolism

A functional anomaly of mitochondria. [from HPO]

MedGen UID:
867369
Concept ID:
C4021734
Finding
8.

Amyotrophic lateral sclerosis

MedGen UID:
506059
Concept ID:
CN006437
Finding
9.

Progressive Encephalomyelitis with Rigidity

MedGen UID:
349287
Concept ID:
C1861457
Disease or Syndrome
10.

Mitochondrial Damage

Mitochondrial Damage involves any process that leads to dysfunction of mitochondria, whether by oxidative damage, mutation of mitochondrial DNA or other by means. [from NCI]

MedGen UID:
242754
Concept ID:
C1096176
Pathologic Function
11.

Lateral

Situated at or extending to the side. [from NCI]

MedGen UID:
64373
Concept ID:
C0205093
Spatial Concept
12.

Retinitis pigmentosa

Retinitis pigmentosa (RP) refers to a heterogeneous group of inherited ocular diseases that result in a progressive retinal degeneration affecting 1 in 3,000 to 5,000 people (Veltel et al., 2008). Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age. Upon examination, patients have decreased visual acuity, constricted visual fields, dyschromatopsia (tritanopic; see 190900), and the classic fundus appearance with dark pigmentary clumps in the midperiphery and perivenous areas ('bone spicules'), attenuated retinal vessels, cystoid macular edema, fine pigmented vitreous cells, and waxy optic disc pallor. RP is associated with posterior subcapsular cataracts in 39 to 72% of patients, high myopia, astigmatism, keratoconus, and mild hearing loss in 30% of patients (excluding patients with Usher syndrome; see 276900). Fifty percent of female carriers of X-linked RP have a golden reflex in the posterior pole (summary by Kaiser et al., 2004). Juvenile Retinitis Pigmentosa Autosomal recessive childhood-onset severe retinal dystrophy is a heterogeneous group of disorders affecting rod and cone photoreceptors simultaneously. The most severe cases are termed Leber congenital amaurosis (see 204000), whereas the less aggressive forms are usually considered juvenile retinitis pigmentosa (Gu et al., 1997). Autosomal recessive forms of juvenile retinitis pigmentosa can be caused by mutation in the SPATA7 (609868), LRAT (604863), and TULP1 (602280) genes (see LCA3, 604232, LCA14, 613341, and LCA15, 613843, respectively). An autosomal dominant form of juvenile retinitis pigmentosa (see 604393) is caused by mutation in the AIPL1 gene (604392). [from GTR]

MedGen UID:
20551
Concept ID:
C0035334
Disease or Syndrome
13.

TDP-43 Proteinopathies

Diseases characterized by the presence of abnormally phosphorylated, ubiquitinated, and cleaved DNA-binding protein TDP-43 in affected brain and spinal cord. Inclusions of the pathologic protein in neurons and glia, without the presence of AMYLOID, is the major feature of these conditions, thus making these proteinopathies distinct from most other neurogenerative disorders in which protein misfolding leads to brain amyloidosis. Both frontotemporal lobar degeneration and AMYOTROPHIC LATERAL SCLEROSIS exhibit this common method of pathogenesis and thus they may represent two extremes of a continuous clinicopathological spectrum of one disease. [from MeSH]

MedGen UID:
439336
Concept ID:
C2718017
Disease or Syndrome
14.

Proteostasis Deficiencies

Disorders caused by imbalances in the PROTEIN HOMEOSTASIS network - synthesis, folding, and transport of proteins; post-translational modifications; and degradation or clearance of misfolded proteins. [from MeSH]

MedGen UID:
403490
Concept ID:
C2718000
Cell or Molecular Dysfunction
15.

Neurodegenerative disease

Hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral nervous system structures. [from MeSH]

MedGen UID:
101195
Concept ID:
C0524851
Disease or Syndrome
16.

Nutritional and Metabolic Diseases

A collective term for nutritional disorders resulting from poor absorption or nutritional imbalance, and metabolic disorders resulting from defects in biosynthesis (ANABOLISM) or breakdown (CATABOLISM) of endogenous substances. [from MeSH]

MedGen UID:
45164
Concept ID:
C0028715
Disease or Syndrome
17.

Metabolic disease

A congenital (due to inherited enzyme abnormality) or acquired (due to failure of a metabolic important organ) disorder resulting from an abnormal metabolic process. [from NCI]

MedGen UID:
44376
Concept ID:
C0025517
Disease or Syndrome
18.

Motor neuron disease

Diseases characterized by a selective degeneration of the motor neurons of the spinal cord, brainstem, or motor cortex. Clinical subtypes are distinguished by the major site of degeneration. In AMYOTROPHIC LATERAL SCLEROSIS there is involvement of upper, lower, and brainstem motor neurons. In progressive muscular atrophy and related syndromes (see MUSCULAR ATROPHY, SPINAL) the motor neurons in the spinal cord are primarily affected. With progressive bulbar palsy (BULBAR PALSY, PROGRESSIVE), the initial degeneration occurs in the brainstem. In primary lateral sclerosis, the cortical neurons are affected in isolation. (Adams et al., Principles of Neurology, 6th ed, p1089) [from MeSH]

MedGen UID:
38785
Concept ID:
C0085084
Disease or Syndrome
19.

Disorder of nervous system

A non-neoplastic or neoplastic disorder that affects the brain, spinal cord, or peripheral nerves. [from NCI]

MedGen UID:
14336
Concept ID:
C0027765
Disease or Syndrome
20.

Abnormality of the spinal cord

A non neoplastic or neoplastic disorder that affects the spinal cord. [from NCI]

MedGen UID:
11550
Concept ID:
C0037928
Disease or Syndrome
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