Research Article

Aberrations in Oxidative Stress Markers in Amyotrophic Lateral Sclerosis: A Systematic Review and Meta-Analysis

Table 1

Summary of comparative outcomes for measurements of blood oxidative stress marker levels.

CytokineNo. of studiesNo. with ALS/controlsMain effectHeterogeneityPublication bias
Hedges’ (95% CI) score value statistic value statisticEgger intercept value

Uric acid7961/1185-0.798 (-1.117 to -0.479)-4.906<0.00156.0346<0.00189.2920.9100.750
8-OHdG218/612.194 (0.554 to 3.835)2.6220.0096.31510.01284.165NANA
MDA5123/1201.168 (0.812 to 1.523)6.441<0.0015.79340.21530.9501.617210.38172
GSH471/78-1.636 (-3.020 to -0.252)-2.3180.02036.1123<0.00191.692-7.0140.061
AOPP2147/1330.555 (0.317 to 0.792)4.571<0.0010.02510.8750.000NANA
Ceruloplasmin346/46-0.052 (-0.475 to 0.372)-0.2390.8112.16820.3387.7422.5380.403
Cu10361/4710.014 (-0.337 to 0.366)0.0800.93739.6709<0.00177.3130.096860.94797
Glutathione peroxidase491/110-0.679 (-1.732 to 0.373)-1.2650.20629.6873<0.00189.895-4.923040.30857
Total cholesterol132161/38700.144 (-0.095 to 0.383)1.1840.236160.18512<0.00192.5091.505780.44161
HDL92024/3722-0.198 (-0.625 to 0.228)-0.9120.362345.1288<0.00197.6822.999580.54140
LDL92024/37220.121 (-0.283 to 0.524)0.5870.557307.9488<0.00197.4022.741930.55440
SOD596/184-0.203 (-0.904 to 0.497)-0.5690.56922.7034<0.00182.3819.112050.01197
Co-Q10495/1280.040 (-0.468 to 0.548)0.1560.8769.95330.01969.858-2.106790.75503
Transferrin5954/5920.244 (-0.219 to 0.707)1.0320.30250.3304<0.00192.0525.244330.09393
Triglyceride81743/1633-0.154 (-0.622 to 0.314)-0.6450.519265.5607<0.00197.3644.854770.32384

Abbreviations: df: degrees of freedom; ALS: amyotrophic lateral sclerosis; 8-OHdG: 8-hydroxyguanosine; MDA: malondialdehyde; SOD: superoxide dismutase; AOPP: Advanced Oxidation Protein Product; LDL: low-density lipoprotein; HDL: high-density lipoprotein; Co-Q10: coenzyme-Q10; NA: not available.