Determination of candidate genes involved in schizophrenia using the whole-exome sequencing

OBJECTIVES

We used the whole-exome sequencing to evaluate several genes suspected of being involved in the pathogenesis of schizophrenia.

METHODS

The study sample was composed of two families. In the first family, two siblings had schizophrenia, and the parents were healthy. In the second family, two siblings had schizophrenia, while the other sibling and the parents did not.

RESULTS

Indels were detected in some genes, including SPON1, GRIA3, SMAD5, PCLO, KMT2C, SRD5A2, SEMA3B, NCOR2, GPHB5, FAM174B, CLTCL1, and TMEM216. The insertion of three nucleotides (TGA) was detected in the sequence of the PCLO gene. The mutation resulted in the insertion of aspartic acid (Asp, D) in the amino acid sequence of the PCLO protein. Indels detected in SPON1, GRIA3, SMAD5, KMT2C, SRD5A2, SEMA3B, GPHB5, CLTCL1, and TMEM216 were shown to be frameshifting. Bioinformatics analysis showed that the indels in SPON1, GRIA3, SMAD5, KMT2C, SRD5A2, SEMA3B, NCOR2, GPHB5, FAM174B, CLTCL1, and TMEM216 had a damaging effect, while the indel in PCLO had a non-damaging effect on protein function.

CONCLUSION

To the best of our knowledge, no previous studies have examined the relationship between the pathogenesis of schizophrenia and the gene mutations identified in this study (Tab. 1, Ref, 42).

The relationship between disability, quality of life and fear-avoidance beliefs in patients with chronic low back pain

AIM

The aim of this study is to investigate the relationship between fear and avoidance beliefs with the disability of patients with chronic low back pain and the prediction of quality of life.

MATERIAL AND METHODS

105 outpatients with chronic low back pain were included in the study. Patients were evaluated with a sociodemographic questionnaire Visual Analog Scale Roland Morris Disability Questionnaire Beck anxiety inventory Beck depression inventory, Somatosensory Amplification Scale Fear and avoidance beliefs questionaire and Short form-36 health survey questionnaire.

RESULTS

As pain intensity increased, FABQ increased. Higher levels of anxiety, depression, FABQ (work) leads to higher level of disability. The disability predictors were found to be pain intensity and level of anxiety. When levels of pain intensity, level of anxiety and depression, FABQ increased, physical function decreased. Pain intensity and FABQ (physical) were found to be the predictors of quality of life.

CONCLUSION

Findings of our study were compatible with the previous studies that evaluated the relationship between pain intensity and FAB with the disability of patients with chronic low back pain. We think that it'd have a role for the perception of disability and connected to this to prevent the impairment of life quality by implications for FAB in these patients.