ABSTRACT
Over the past decade, studies on microRNA (miRNA) and cancer quickly became known. miRNAs are small non-coding RNAs that play a vital role in regulation of gene expression. In the present study, the expression of miR-27b, miR-29a, and miR-155, their prognostic roles, and their potential targets in chronic lymphocytic leukemia (CLL) and breast cancer (BC) by qRT-PCR were investigated. In two case-control studies, qRT-PCR was used to analyze the peripheral blood serum of 15 CLL patients and tissue samples of 15 BC patients for the expression of miR-27b, miR-29a, and miR-155. miRNA expression levels were calculated using the qRT-PCR method. The results revealed a significant increase in the expression of all miRNAs in patients with BC and CLL compared with respective healthy groups (p < 0.001). In BC patients, there was a significant difference between the expression of miR-155 and miR-29a (p < 0.05), miR-155 and miR-27b (p < 0.01), and miR-27b and miR-29a (p < 0.001). In CLL patients, a significant difference between expression of both miR-27b and miR-29a compared with expression of miR-155 (p < 0.001) was found. Furthermore, a significant association between miR-155 and prevascular invasion was found. Significantly, elevated circulating miRNAs were shown to be BC specific and could differentiate BC tissues from the controls. It was demonstrated that miRNAs used in this study and their expression profiles can be developed as biomarkers for early diagnosis and prognosis of CLL and BC. Further studies utilizing a larger test group of patients would provide identification of miRNAs as key players in intercellular interactions.
ABSTRACT
BACKGROUND: The different duration of delay to first contact with a psychiatrist in depressive disordered patients has been observed in western and non western cultures. This study aimed to examine the duration and predictive factors of delay in contact with a psychiatrist in depressive patients in Isfahan city of Iran. METHODS: In This cross sectional study 156 depressive patients were recruited from various outpatient clinics in Isfahan city between January 2013 and February 2013. We used the Anderson Socio-Behavioral Model (ASBM) for examine the role of various factors influencing delay in help seeking. In this models there were three categories variables (predisposing, enabling and need factors). Quintile regression model was used to study the predictors. RESULTS: The median duration between symptom onset and first contact with a psychiatrist was 1 year. In the first step (predisposing model), age at onset of depressive symptoms and never married were negative predictors for delay, but widowed or divorced statues was positive predictors for delay. In the enabling model past contact with health provider was positively associated with duration of delay. In the need model, neither variable had a significant effect on duration of delay. In the full model, younger age at onset, widowed or divorced statues and past contact with health provider increased duration of delay. CONCLUSIONS: More delay of help seeking by children and adolescence and probability of maladaptive coping style such as substance use and complicating of situation need to earlier diagnosis of depression in young group and earlier treatment for decrease DALLY for MDD, Therefore we suggest the mental health awareness programs for adolescent in school, and more ever for the influenced roles of parent and other family members and teachers on teen and young person's life, the education for families and teachers on adolescent mental health problems can be effective. First help seeking contact with non-psychiatric medical professionals enhance the delay of contact with a psychiatrist. Appropriate training of non-psychiatric medical professionals and developing a referral system would lead to better provision of mental health care.
