The three branches of the UPR response were evaluated by Western blot measuring PERK (Tyr980), eIF2α (Ser51), and IRE1α (Ser724) phosphorylation, sXBP-1 and cleaved ATF6 (cATF6) in A- adipose tissue and B- liver. Bands were quantified and results for the HFr (HF) and HFr + EC (EC) were referred to control group values (C). Phosphorylated/total ratios were calculated for PERK, eIFα and IRE1α; sXBP-1 and cATF6 were normalized to tubulin content. Results are shown as mean ± SEM of 5-8 animals/treatment. *Significantly different from other groups (p<0.05, one way ANOVA test).