Oxidative stress and intracellular pH in the young and old erythrocytes of rat
The effects of oxidative stress (OS) on the rat erythrocytes (RBCs) that were fractionated on the percoll/BSA gradient into young and old cells were studied to find out if the altered Na+/H+ and Cl⁻/ HCO3⁻ antiporters and in turn the intracellular pH (pHi) could act as one of the promoters of cell death. Old cells were more spherical with lesser surface area, more fragile osmotically and had lesser protein sulphydryl content than the young cells. OS was induced in RBCs by 2,20-azobis (2-amidinopropane) dihydrochloride (AAPH). AAPH increased the superoxide dismutase (SOD) activity and MDA level and, the changes between the young and old. Interestingly, vitamin C was effective in reducing MDA in the old. Further, in the old a rapid Na+-dependent acidification in the presence of AAPH and a marginal acidosis in the presence of vitamin C were evident. Old RBCs exhibited higher acidosis and vitamin C was less effective in lowering the stress-induced acidosis compared to the young. Our studies suggest that increased acidosis followed by low intracellular pH could be one of the determinant factors for the disappearance of old RBCs from circulation, and perhaps of the young too under OS.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2009 |
|---|---|
| Erschienen: |
2009 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:10 |
|---|---|
| Enthalten in: |
Biogerontology - 10(2009), 6 vom: 31. Dez., Seite 659-69 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Asha Devi, S [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 20.06.2011 Date Revised 18.03.2022 published: Print Citation Status MEDLINE |
|---|
| doi: |
10.1007/s10522-009-9212-8 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM186410654 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM186410654 | ||
| 003 | DE-627 | ||
| 005 | 20231223174142.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231223s2009 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1007/s10522-009-9212-8 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n0621.xml |
| 035 | |a (DE-627)NLM186410654 | ||
| 035 | |a (NLM)19214770 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Asha Devi, S |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Oxidative stress and intracellular pH in the young and old erythrocytes of rat |
| 264 | 1 | |c 2009 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 20.06.2011 | ||
| 500 | |a Date Revised 18.03.2022 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The effects of oxidative stress (OS) on the rat erythrocytes (RBCs) that were fractionated on the percoll/BSA gradient into young and old cells were studied to find out if the altered Na+/H+ and Cl⁻/ HCO3⁻ antiporters and in turn the intracellular pH (pHi) could act as one of the promoters of cell death. Old cells were more spherical with lesser surface area, more fragile osmotically and had lesser protein sulphydryl content than the young cells. OS was induced in RBCs by 2,20-azobis (2-amidinopropane) dihydrochloride (AAPH). AAPH increased the superoxide dismutase (SOD) activity and MDA level and, the changes between the young and old. Interestingly, vitamin C was effective in reducing MDA in the old. Further, in the old a rapid Na+-dependent acidification in the presence of AAPH and a marginal acidosis in the presence of vitamin C were evident. Old RBCs exhibited higher acidosis and vitamin C was less effective in lowering the stress-induced acidosis compared to the young. Our studies suggest that increased acidosis followed by low intracellular pH could be one of the determinant factors for the disappearance of old RBCs from circulation, and perhaps of the young too under OS | ||
| 650 | 4 | |a Comparative Study | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Amidines |2 NLM | |
| 650 | 7 | |a Antioxidants |2 NLM | |
| 650 | 7 | |a Chloride-Bicarbonate Antiporters |2 NLM | |
| 650 | 7 | |a Oxidants |2 NLM | |
| 650 | 7 | |a Sodium-Hydrogen Exchangers |2 NLM | |
| 650 | 7 | |a Malondialdehyde |2 NLM | |
| 650 | 7 | |a 4Y8F71G49Q |2 NLM | |
| 650 | 7 | |a 2,2'-azobis(2-amidinopropane) |2 NLM | |
| 650 | 7 | |a 7381JDR72F |2 NLM | |
| 650 | 7 | |a Superoxide Dismutase |2 NLM | |
| 650 | 7 | |a EC 1.15.1.1 |2 NLM | |
| 650 | 7 | |a Ascorbic Acid |2 NLM | |
| 650 | 7 | |a PQ6CK8PD0R |2 NLM | |
| 700 | 1 | |a Shiva Shankar Reddy, C S |e verfasserin |4 aut | |
| 700 | 1 | |a Subramanyam, M V V |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Biogerontology |d 2000 |g 10(2009), 6 vom: 31. Dez., Seite 659-69 |w (DE-627)NLM116002239 |x 1389-5729 |7 nnns |
| 773 | 1 | 8 | |g volume:10 |g year:2009 |g number:6 |g day:31 |g month:12 |g pages:659-69 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1007/s10522-009-9212-8 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 10 |j 2009 |e 6 |b 31 |c 12 |h 659-69 | ||