Interactions of peptide amidation and copper: Novel biomarkers and mechanisms of neural dysfunction
| Autor: | Betty A. Eipper, Traci A. Czyzyk, Eduardo A. Nillni, Danielle Bousquet-Moore, Joseph R. Prohaska, Richard E. Mains, William C. Wetsel |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Male
Heterozygote Neuropeptide chemistry.chemical_element Mice Transgenic Haploinsufficiency Anxiety Biology Article Mixed Function Oxygenases lcsh:RC321-571 Mice Multienzyme Complexes Seizures parasitic diseases medicine Animals Homeostasis lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry Nutrition Neuropeptides Wild type Thermogenesis Metabolism Monooxygenase medicine.disease Anxiety Disorders Seizure Copper Diet Neurology Biochemistry chemistry Peptide amidation Vasoconstriction Dietary Supplements Pentylenetetrazole Female Peptides Copper deficiency Body Temperature Regulation |
| Zdroj: | Neurobiology of Disease, Vol 37, Iss 1, Pp 130-140 (2010) |
| ISSN: | 0969-9961 |
| DOI: | 10.1016/j.nbd.2009.09.016 |
| Popis: | Mammalian genomes encode only a small number of cuproenzymes. The many genes involved in coordinating copper uptake, distribution, storage and efflux make gene/nutrient interactions especially important for these cuproenzymes. Copper deficiency and copper excess both disrupt neural function. Using mice heterozygous for peptidylglycine alpha-amidating monooxygenase (PAM), a cuproenzyme essential for the synthesis of many neuropeptides, we identified alterations in anxiety-like behavior, thermoregulation and seizure sensitivity. Dietary copper supplementation reversed a subset of these deficits. Wildtype mice maintained on a marginally copper-deficient diet exhibited some of the same deficits observed in PAM(+/-) mice and displayed alterations in PAM metabolism. Altered copper homeostasis in PAM(+/-) mice suggested a role for PAM in the cell type specific regulation of copper metabolism. Physiological functions sensitive to genetic limitations of PAM that are reversed by supplemental copper and mimicked by copper deficiency may serve as indicators of marginal copper deficiency. |
| Databáze: | OpenAIRE |
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