Induction chemotherapy reduces extracellular heat shock protein 72 levels, inflammation, lipoperoxidation and changes insulin sensitivity in children and adolescents newly diagnosed with acute lymphoblastic leukemia

Abstract

BackgroundAcute lymphoblastic leukemia (ALL) is associated with higher levels of pro-inflammatory cytokines and oxidative stress. Recently, the levels of extracellular heat shock protein 72 (eHSP72) were found to be elevated in ALL, and its elevation associated with poor prognosis. Therefore, considering the possible role of eHSP72 as a modulator of the immunological system and metabolism, the aim of this study was to describe the response of eHSP72 to the induction phase of chemotherapy, along with metabolic, inflammatory and oxidative stress markers, in children and adolescents newly diagnosed with ALL.MethodsNineteen patients were recruited and analysed before and after the induction phase of chemotherapy (with 28 days of duration). Blood samples were taken for the analysis of C-reactive protein (CRP), levels of lipoperoxidation, insulin (and HOMA-IR), cortisol, glucose, lipid profile and eHSP72.ResultsWe found that induction phase of chemotherapy leads to a drop in glucose levels (from 101.79±19 to 75.8±9.7 mg/dL), improvements on inflammation (CRP levels, p<0.01) and oxidative stress (TBARS levels, p<0.01), reduction on eHSP72 (p=0.03) and improved insulin sensitivity (HOMA-IR, p=0.02).ConclusionOur results indicate that eHSP72 may have an immune and metabolic role and could be used as a marker of the treatment success and metabolic changes in children with ALL.

Elevated Extracellular HSP72 and Blunted Heat Shock Response in Severe COVID-19 Patients

“…In order to compare the obtained results from critically ill patients with severe COVID-19 pneumonia with noninfected subjects, we used the data and stored frozen samples from previous studies [ 17 , 27 , 28 ]. These samples were obtained from healthy individuals (here named noninfected control group, n = 19) and individuals with type 2 diabetes (noninfected with diabetes, n = 22).…”

Coronavirus infection (SARS-CoV-2) in obesity and diabetes comorbidities: is heat shock response determinant for the disease complications?

“…Extracellular HSP72 is receiving more attention since its regulatory role on immune cells are still under discussion. This protein can be released by different cells and stress conditions such as acute exercise and heat [ 15 ] and is involved in several conditions such as insulin resistance and acute lymphoblastic leukemia [ 28 ]. The effects of eHSP72 are still under debate since pro and anti-inflammatory results were described.…”