Linked Life Data

8085167

Source:http://linkedlifedata.com/resource/pubmed/id/8085167

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-10-13
pubmed:abstractText
Monomethoxypolyethylene glycol (MPEG) was attached covalently to superoxide dismutase (SOD, EC1.15.1.1). The molecular weight of MPEG-SOD was about 7.0 x 10(5) Dalton determined by Fast Protein Liquid Chromatography (FPLC with Sepharose 6 HR10/30). MPEG-SOD exhibited a sharply enhanced serum half life (more than 30 h) than that of the native SOD (6-10 min). To determine the role of MPEG-SOD in acute hypoxia-induced injury of left ventricular function, heart rate (HR), arterial pressure (AP), left ventricular pressure (LVP) and dp/dt (LV +/- dp/dtmax) were measured in male SD rats divided into three groups: Control group (n = 8, intravenously injected with physiological saline), native SOD group (n = 8,800 U SOD i. v.) and MPEG-SOD group (n = 9,800 U MPEG-SOD i. v.). LVP, LV +/- dp/dtmax, AP and HR showed no significant difference among these three groups before hypoxia. But in acute hypoxia simulating altitude of 6,000-6,500 m, LVP, LV+dp/dtmax and AP were decreased in the control group, while in MPEG-SOD group they were all increased compared with those in control group (P < 0.05, P < 0.01). There were no significant difference between control group and native SOD group. The results indicate that MPEG-SOD has a protective effect on the injury of myocardial function induced by acute hypoxia, and suggest that acute hypoxia cause increase of superoxide free radical (O2.-) and other derivative radicals damaging membrane system of the cell.
pubmed:language
chi
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0371-0874
pubmed:author
pubmed:issnType
Print
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36-43
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
[The protective effect of MPEG-SOD on the function of left ventricle during acute hypoxia].
pubmed:affiliation
Physiological Laboratory of Hypoxia, Shanghai Institute of Physiology, Chinese Academy of Sciences.
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't