HSPA1A and major depressive disorder: Logistic regression showed a strong positive relationship between immunoreactivity of the inducible HSP70 in the PMN cells and scores in the trait anxiety, ZDRS, and hospital depression scales, (Odds ratios 1.3, 1.3, and 1.5; P = 0.018, 0.023, and 0.038; Wald test, 5.6, 5.2, and 4.3 respectively).