Linked Life Data

3600177

Source:http://linkedlifedata.com/resource/pubmed/id/3600177

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1987-7-29
pubmed:abstractText
Stroma-free hemoglobin (Hb) solutions are being developed as blood substitutes. We previously described coronary vasoconstrictor activity of Hb solutions prepared by conventional methods. In the present study we assessed the constrictor activity of unmodified and covalently modified Hb solutions purified by ATP-agarose affinity chromatography. The starting material was a red cell lysate, partially purified by ultrafiltration. Coronary constrictor activity was measured as increased perfusion pressure in isolated rabbit hearts perfused at constant coronary flow rate with buffer containing various concentrations of added Hb. The starting material increased perfusion pressure by 35 +/- 7 mmHg at 50 mg/dl. Purified Hb, retained by the affinity column, increased perfusion pressure by only 18 +/- 2 mmHg at 50 mg/dl. Hemoglobin covalently linked to ATP or pyridoxal phosphate, then purified by affinity chromatography, also had less constrictor activity than the starting material. Thus, a substance, removed by affinity chromatography but not by conventional purification, contributes to the vasoconstrictor activity of Hb solutions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:day
6
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
89-93
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Reduced coronary vasoconstrictor activity of hemoglobin solutions purified by ATP-agarose affinity chromatography.
pubmed:publicationType
Journal Article, In Vitro