The association of very high hair manganese accumulation and high oxidative stress in Mongolian people
| Autor: | Yasuo Kagawa, Baatar Purvee, Ulziiburen Chimedregzen, Terue Kawabata, Kiyomi Ishiguro, Fumio Komatsu, Jugder Otgon |
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| Rok vydání: | 2009 |
| Předmět: |
Pulmonary and Respiratory Medicine
Adult Male medicine.medical_specialty Aging Adolescent chemistry.chemical_element Oxidative phosphorylation Manganese Antioxidant potential medicine.disease_cause Oxygen Superoxide dismutase Soil Young Adult Japan Internal medicine medicine Humans Child Aged Aged 80 and over biology Healthy subjects Water Mongolia Middle Aged Oxidative Stress Endocrinology chemistry Biochemistry Pediatrics Perinatology and Child Health biology.protein Female Oxidative stress Biomarkers Food Analysis Lipoprotein Hair |
| Zdroj: | Current aging science. 2(1) |
| ISSN: | 1874-6128 |
| Popis: | Oxidative stress induces several diseases and early aging. Previously, we reported that Mongolians are exposed in high oxidative stress, which may cause their early aging. In this study, to know the reason of high oxidative stress, we measured hair metals. This investigation was performed in Murun city, in the northern area of this country, and 469 healthy subjects, ranging from 10 to 82 years of age, were randomly enrolled. Oxidative stress was evaluated by the levels of serum reactive oxygen metabolites (ROM), malondialdehyde-modified low-density lipoprotein (MDA-LDL) and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG). Antioxidant capacity (AOC) was estimated by the levels of biological antioxidant potential (BAP) and superoxide dismutase (SOD) activity. Scalp hair metals were measured using an inductively coupled plasma mass spectrometry method. Murun subjects showed high ROM levels of 394+/-75 Carr U (n=342), compared with Japanese healthy subjects (n=356, 326+/-51 Carr U, p0.001). MDA-LDL and 8-OHdG levels also showed high levels. While, BAP levels of Murun subjects were 2263+/-203 micromol/L (n=210), Japanese subjects (n=356, 2087+/-215 micromol/L, p0.001). SOD activities were also high, suggesting that the high oxidative may accelerate the state of AOC. Murun subjects demonstrated high accumulation of several metals in the hairs. In particular, Mn accumulation exhibited from 2 fold to 40 fold increases of Japanese standard. These findings are indicative that the high Mn accumulation may contribute to the high oxidative stress. The mechanism of its high accumulation was not explained by food materials or drinking water. We should further investigate another influence such as sandy wind. In order to suppress the high oxidative stress, elimination of the high Mn accumulation should be urgently studied. |
| Databáze: | OpenAIRE |
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