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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Turley, Stephen D. Lopez, Adam M. Posey, Kenneth S. Le, Lam Q. Weinberg, Arthur G. Ramirez, Charina M. |
| Description | Author Affiliation: Ramirez CM ( Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, USA. Electronic address: charina.ramirez@utsouthwestern.edu.) |
| Abstract | Niemann-Pick Type C (NPC) disease is caused by a deficiency of either NPC1 or NPC2. Loss of function of either protein results in the progressive accumulation of unesterified cholesterol in every tissue leading to cell death and organ damage. Most literature on NPC disease focuses on neurological and liver manifestations. Pulmonary dysfunction is less well described. The present studies investigated how Npc1 deficiency impacts the absolute weight, lipid composition and histology of the lungs of Npc1(-/-) mice (Npc1(nih)) at different stages of the disease, and also quantitated changes in the rates of cholesterol and fatty acid synthesis in the lung over this same time span (8 to 70days of age). Similar measurements were made in Npc2(-/-) mice at 70days. All mice were of the BALB/c strain and were fed a basal rodent chow diet. Well before weaning, the lung weight, cholesterol and phospholipid (PL) content, and cholesterol synthesis rate were all elevated in the Npc1(-/-) mice and remained so at 70days of age. In contrast, lung triacylglycerol content was reduced while there was no change in lung fatty acid synthesis. Despite the elevated PL content, the composition of PL in the lungs of the Npc1(-/-) mice was unchanged. H&E staining revealed an age-related increase in the presence of lipid-laden macrophages in the alveoli of the lungs of the Npc1(-/-) mice starting as early as 28days. Similar metabolic and histologic changes were evident in the lungs of the Npc2(-/-) mice. Together these findings demonstrate an intrinsic lung pathology in NPC disease that is of early onset and worsens over time. |
| ISSN | 00063002 |
| Journal | Biochimica et Biophysica Acta (BBA) - Reviews on Cancer |
| Issue Number | 1 |
| Volume Number | 1841 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-01-01 |
| Publisher Place | Netherlands |
| Access Restriction | Open |
| Subject Keyword | Aging Metabolism Pathology Cholesterol Lipid Metabolism Lung Niemann-Pick Disease, Type C Genetics Animals Mice Mice, Inbred BALB C Mice, Knockout Time Factors Triglycerides Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Biochemistry |
| Content Type | Text |
| Resource Type | Article |
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