This paper is the forty-second consecutive installment of the annual anthological review of
research concerning the endogenous opioid system, summarizing articles published during …

Recent evidence reported that parental-derived phenotypes can be passed on to the next
generations. Within the inheritance of epigenetic characteristics allowing the transmission of …

Background: The chronic stress of social isolation is a valid predictor of cognitive pathology.
This study aimed to compare the effects of long-term social isolation on female versus male …

Acrolein is a clear, colorless liquid and a highly reactive α, β-unsaturated aldehyde.
Acrolein, a byproduct and initiator of oxidative stress, has a major role in the pathogenesis of …

Drug addiction is a chronic relapsing disorder that makes it a global problem. Genetics and
environmental factors are the two most important factors that make someone vulnerable to …

Prescription opioids are used for some chronic pain conditions. However, generally, long-
term therapy has unwanted side effects which may trigger addiction, overdose, and …

Background Critical analysis of new evidence in medical sciences relies on statistics in
terms of correlation. The aim of the present study was to evaluate the correlation coefficients …