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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1994-12-7
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pubmed:abstractText |
Tyr-MIF-1 (Tyr-Pro-Leu-Gly-NH2), an endogenous brain peptide, was incubated at 37 degrees C in cerebrospinal fluid (CSF) from rats and the amount remaining in intact from determined by high performance liquid chromatography (HPLC). By 3 min, a time at which Tyr-MIF-1 had been considerably degraded by rat plasma, essentially no degradation of the tetrapeptide had occurred in CSF. Tyr-MIF-1 persisted in mainly intact form for the 8 days tested, with a calculated half-time degradation of 11.4 days. The simultaneous addition to CSF of equal amounts of Tyr-MIF-1 tritiated on the Tyr and Tyr-MIF-1 tritiated on the Pro facilitated determination of whether Tyr-MIF-1 serves as a precursor of MIF-1 (Pro-Leu-Gly-NH2) in CSF. This possibility was excluded by the findings that the primary metabolite was Tyr-Pro, with minimal and equal amounts of the free amino acids Pro and Tyr being formed, but no MIF-1. The results show the extreme stability of Tyr-MIF-1 in CSF and are consistent with a role for this peptide in the CNS.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0304-3940
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
6
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pubmed:volume |
174
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
26-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7970149-Amino Acid Sequence,
pubmed-meshheading:7970149-Animals,
pubmed-meshheading:7970149-Chromatography, High Pressure Liquid,
pubmed-meshheading:7970149-Iodine Isotopes,
pubmed-meshheading:7970149-MSH Release-Inhibiting Hormone,
pubmed-meshheading:7970149-Male,
pubmed-meshheading:7970149-Molecular Sequence Data,
pubmed-meshheading:7970149-Rats,
pubmed-meshheading:7970149-Rats, Sprague-Dawley
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pubmed:year |
1994
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pubmed:articleTitle |
Extreme stability of Tyr-MIF-1 in CSF.
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pubmed:affiliation |
VA Medical Center, New Orleans, LA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.
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