Correlation of expression level of lncRNA in peripheral blood mononuclear cells, chronic stress in childhood and cognitive dysfunction in schizophrenia patients / 中华行为医学与脑科学杂志

ABSTRACT

Objective:To explore the effects of expression level of long noncoding RNA (lncRNA) in peripheral blood mononuclear cells (PBMCs), chronic stress in childhood on cognitive function for providing scientific basis of prevention, intervention and rehabilitation of cognitive impairment in schizophrenia patients.Methods:Quantitative real-time PCR (qPCR) was used to screen lncRNA expression in peripheral blood mononuclear cells (PBMCs) of 100 schizophrenic patients who was recruited by convenient sampling, and all the patients were assessed by Montreal cognitive assessment-Beijing version (MoCA) and childhood chronic stress questionnaire (CCSQ). Mann-Whitney test, t-test, correlation analysis and regression analysis were employed for data processing. Results:The ΔCt values of NONHSAT089447(5.07), NONHSAT041499(8.56) were higher ( Z=-2.38, -2.07, P<0.05) and scores of all three CCSQ dimensions were lower in higher MoCA goup than those in lower MOCA group (peer bullying: 42.36±11.13 vs 50.84±9.09, abuse and neglect: 55.08±14.22 vs 69.56±13.45, adverse life events: 47.64±12.21 vs 55.80±13.92, t=-2.20--3.70, P<0.05 or 0.01). The ΔCt value of NONHSAT089447, NONHSAT041499 positively correlated with scores of visuospatial-executive, language, abstraction and delayed recall ( r=0.43-0.75, P<0.01). All three CCSQ dimensions negatively correlated with scores of visuospatial-executive, attention, language, abstract thinking and delayed recall ( r=-0.40--0.62, P<0.05 or 0.01). Multiple regression analysis showed that the ΔCt valueof NONHSAT089447, abuse and neglect in childhood significantly predicted the total score of MOCA, which could explained 31.9% of variation ( t=4.31, 5.89, P=0.007, 0.001). The ΔCt value of NONHSAT089447, NONHSAT041499 negatively correlated with peer bullying, abuse and neglect in childhood ( r=-0.39--0.53, all P<0.01). Conclusion:There are correlation in NONHSAT089447, NONHSAT041499 and chronic stress in childhood in patients with schizophrenia, which can jointly predict their cognitive function.