PMID- 7472679 OWN - NLM STAT- MEDLINE DCOM- 19951212 LR - 20190830 IS - 0301-4800 (Print) IS - 0301-4800 (Linking) VI - 41 IP - 3 DP - 1995 Jun TI - Selenium levels and glutathione peroxidase activities in blood in an andean high-altitude population. PG - 349-61 AB - Selenium (Se) levels in blood (whole blood, erythrocytes and serum) and blood glutathione peroxidase (GSH-Px) activity were investigated in people living at high altitude in Bolivia (4,000 m above sea level). These parameters were compared to those of people living at low altitude (300 m above sea level). The Se levels in whole blood of the high-altitude subjects did not differ significantly from those of the low-altitude subjects. However, the Se levels in erythrocytes were significantly lower in the high-altitude subjects than in the low-altitude subjects, whereas serum Se levels were higher in the high-altitude subjects than in the low-altitude subjects. GSH-Px activity (Unit/g Hb) was significantly lower in the high-altitude subjects than in the low-altitude subjects. The mean corpuscular Hb concentration (MCHC), an indicator of the age of erythrocytes, in the high-altitude subjects was significantly higher than in the low-altitude subjects. These results show that the GSH-Px activity in the blood of the high-altitude subjects is relatively low. This may be due to their aged erythrocytes and/or to relatively low Se intake in the high-altitude population compared with low-altitude population. FAU - Imai, H AU - Imai H AD - Regional Environment Division, National Institute for Environmental Studies, Tsukuba, Japan. FAU - Kashiwazaki, H AU - Kashiwazaki H FAU - Suzuki, T AU - Suzuki T FAU - Kabuto, M AU - Kabuto M FAU - Himeno, S AU - Himeno S FAU - Watanabe, C AU - Watanabe C FAU - Moji, K AU - Moji K FAU - Kim, S W AU - Kim SW FAU - Rivera, J O AU - Rivera JO FAU - Takemoto, T AU - Takemoto T LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - J Nutr Sci Vitaminol (Tokyo) JT - Journal of nutritional science and vitaminology JID - 0402640 RN - 0 (Hemoglobins) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - H6241UJ22B (Selenium) SB - IM EIN - J Nutr Sci Vitaminol (Tokyo) 1995 Oct;41(5):followi MH - Adolescent MH - Adult MH - *Altitude MH - Bolivia MH - Child MH - Child, Preschool MH - Erythrocyte Indices MH - Erythrocytes/metabolism MH - Female MH - Glutathione Peroxidase/*blood MH - Hematocrit MH - Hemoglobins/metabolism MH - Humans MH - Infant MH - Male MH - Reference Values MH - Selenium/*blood EDAT- 1995/06/01 00:00 MHDA- 1995/06/01 00:01 CRDT- 1995/06/01 00:00 PHST- 1995/06/01 00:00 [pubmed] PHST- 1995/06/01 00:01 [medline] PHST- 1995/06/01 00:00 [entrez] AID - 10.3177/jnsv.41.349 [doi] PST - ppublish SO - J Nutr Sci Vitaminol (Tokyo). 1995 Jun;41(3):349-61. doi: 10.3177/jnsv.41.349.