Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
13
|
| pubmed:dateCreated |
1996-1-16
|
| pubmed:abstractText |
Cultured cells grow better in low oxygen than in room air, and the addition of a sulfhydryl-reducing agent is usually routine. It has been thought that such reagents protect cells from free-radical toxicity in atmospheric oxygen, which is higher than in physiological oxygen tension. Previous data demonstrating the efficacy of the usual antioxidant, 2-mercaptoethanol (2ME), were obtained in murine studies. We have compared the effect of 2ME and other antioxidants on human erythropoiesis using neonatal (cord) and adult blood. Without antioxidants, erythroid colony numbers were higher in 5% oxygen than in air, while colony formation could be improved even in 5% oxygen by the addition of antioxidants. In dose-response curves of each drug, the maximum increase in colony number was achieved with 0.1 microM 2ME, 10 microM reduced glutathione (GSH), 1 U/mL catalase (CAT), and 1 U/mL superoxide dismutase (SOD). Erythroid colony growth in air and in 5% oxygen was identical with 10 microM GSH and higher than in any other conditions, including with combinations of GSH and any other antioxidant. For human erythroid progenitor cell cultures, 10 microM GSH appears to be more appropriate than the usual 100 microM 2ME. Antioxidants are necessary, however, even in low oxygen tension. The mechanism of the GSH action is incompletely understood.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Antioxidants,
http://linkedlifedata.com/resource/pubmed/chemical/Catalase,
http://linkedlifedata.com/resource/pubmed/chemical/Glutathione,
http://linkedlifedata.com/resource/pubmed/chemical/Mercaptoethanol,
http://linkedlifedata.com/resource/pubmed/chemical/Oxygen,
http://linkedlifedata.com/resource/pubmed/chemical/Reactive Oxygen Species,
http://linkedlifedata.com/resource/pubmed/chemical/Superoxide Dismutase
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Dec
|
| pubmed:issn |
0301-472X
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
23
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
1372-7
|
| pubmed:dateRevised |
2008-11-21
|
| pubmed:meshHeading |
pubmed-meshheading:7498366-Adult,
pubmed-meshheading:7498366-Age Factors,
pubmed-meshheading:7498366-Antioxidants,
pubmed-meshheading:7498366-Catalase,
pubmed-meshheading:7498366-Colony-Forming Units Assay,
pubmed-meshheading:7498366-Dose-Response Relationship, Drug,
pubmed-meshheading:7498366-Erythroid Precursor Cells,
pubmed-meshheading:7498366-Erythropoiesis,
pubmed-meshheading:7498366-Female,
pubmed-meshheading:7498366-Fetal Blood,
pubmed-meshheading:7498366-Glutathione,
pubmed-meshheading:7498366-Humans,
pubmed-meshheading:7498366-Infant, Newborn,
pubmed-meshheading:7498366-Male,
pubmed-meshheading:7498366-Mercaptoethanol,
pubmed-meshheading:7498366-Middle Aged,
pubmed-meshheading:7498366-Oxygen,
pubmed-meshheading:7498366-Reactive Oxygen Species,
pubmed-meshheading:7498366-Superoxide Dismutase
|
| pubmed:year |
1995
|
| pubmed:articleTitle |
Effects of low oxygen tension and antioxidants on human erythropoiesis in vitro.
|
| pubmed:affiliation |
Division of Pediatric Hematology/Oncology, Children's Hospital C3.270, University of Texas Medical Branch, Galveston 77555-0361, USA.
|
| pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
|