Inflammation and depression treatment response to electroconvulsive therapy: Sex-specific role of interleukin-8
BRAIN BEHAVIOR AND IMMUNITY
Authors: Kruse, Jennifer L.; Olmstead, Richard; Hellemann, Gerhard; Wade, Benjamin; Jiang, Janina; Vasavada, Megha M.; Brooks, John O., III; Congdon, Eliza; Espinoza, Randall; Narr, Katherine L.; Irwin, Michael R.
Abstract
Females suffer from depression at twice the rate of males and have differential neural and emotional responses to inflammation. However, sex-specific evaluation of relationships between inflammation and response to depression treatments are lacking. Some data suggest that interleukin(IL)-8 predicts treatment response to antidepressants and has a relationship with depressive symptom severity. This study examines whether IL-8 predicts treatment response to electroconvulsive therapy (ECT), and whether there are sex specific effects. In 40 depressed patients (22 female), plasma levels of IL-8, as well as other markers of inflammation including IL-6, IL10, tumor necrosis factor (TNF)-alpha, and C-reactive protein (CRP) were obtained prior to administration of ECT and after completion of the index treatment series. Depression treatment response was defined as >= 50% reduction in Hamilton Depression Rating Scale (HAM-D) Score. Baseline levels of IL-8 differed by responder status, depending on sex (group x sex interaction: beta = -0.571, p = 0.04), with female responders having lower levels of IL-8 at baseline as compared to female non-responders [t(20) = 2.37, p = 0.03]. Further, IL-8 levels from baseline to end of treatment differed by responder status, depending on sex (group x sex x time interaction: [F (1,36) = 9.48, p= 0.004]), and change in IL-8 from baseline to end of treatment was negatively correlated with percentage change in HAM-D score in females (beta = -0.458, p = 0.03), but not in males (beta = 0.315, p = 0.20). Other inflammatory markers did not differ in relation to responder status and sex. Further evaluation of sex differences in the relationship between IL-8, depression, and treatment response, across disparate treatment modalities, may inform mechanisms of response and aid in development of personalized medicine strategies.
Serum levels of inflammatory cytokines in patients with idiopathic carpal tunnel syndrome
INTERNATIONAL JOURNAL OF NEUROSCIENCE
Authors: Karimi, Narges; AbedianKenari, Saeid; Darvari, Fateme
Abstract
Objectives: Carpal tunnel syndrome (CTS) is a disorder caused by median nerve pressure inside the carpal tunnel in the wrist area. Recent evidences have demonstrated a role of cytokines in CTS. It is still controversial whether idiopathic CTS is an inflammatory or non-inflammatory disorder. Accordingly, the purpose of the current research was to assess serum levels of inflammatory cytokines in patients with idiopathic carpal tunnel syndrome in comparison with healthy participants. Methods: This case-control research was performed on 40 female patients with idiopathic carpal tunnel syndrome and 40 healthy controls. After identifying the participants, the serum levels of four cytokines (TNF-alpha, IL-2, IL-4, IL-6, and IL-10) were calculated by ELIZA method. SPSS statistical analysis was performed after entering data. p-values <= 0.05 was deliberated statistically significant. Results: The mean age was 45.07 +/- 8.52 years in the patient group and 45.32 +/- 8.42 years in the control group. The concentration of TNF alpha, IL1, IL6 and IL10 was 3.84 +/- 0.44, 3.20 +/- 0.71, 3.37 +/- 1.26 and 6.21 +/- 3.38 in patient group. The current study results demonstrated that there was no statistically significant difference among the case and control groups. Conclusions: This study showed that, serum levels of inflammatory cytokines (IL1, IL6, IL10 and TNF alpha) had no meaningful changes in patients with carpal tunnel syndrome and the role of these inflammatory mediators in this disease is still unclear.