Telomere Length and CCL11 Levels are Associated with Gray Matter Volume and Episodic Memory Performance in Schizophrenia: Evidence of Pathological Accelerated Aging

Leticia Sanguinetti Czepielewski, Raffael Massuda, Bruna Panizzutti, Lucas Kich Grun, Florencia María Barbé-Tuana, Antonio Lucio Teixeira, Deanna M. Barch, Clarissa S. Gama

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Schizophrenia (SZ) is associated with increased somatic morbidity and mortality, in addition to cognitive impairments similar to those seen in normal aging, which may suggest that pathological accelerated aging occurs in SZ. Therefore, we aim to evaluate the relationships of age, telomere length (TL), and CCL11 (aging and inflammatory biomarkers, respectively), gray matter (GM) volume and episodic memory performance in individuals with SZ compared to healthy controls (HC). One hundred twelve participants (48 SZ and 64 HC) underwent clinical and memory assessments, structural MRI, and had their peripheral blood drawn for biomarkers analysis. Comparisons of group means and correlations were performed. Participants with SZ had decreased TL and GM volume, increased CCL11, and worse memory performance compared to HC. In SZ, shorter TL was related to increased CCL11, and both biomarkers were related to reduced GM volume, all of which were related to worse memory performance. Older age was only associated with reduced GM, but longer duration of illness was related with all the aforementioned variables. Younger age of disease onset was associated with increased CCL11 levels and worse memory performance. In HC, there were no significant correlations except between memory and GM. Our results are consistent with the hypothesis of accelerated aging in SZ. These results may indicate that it is not age itself, but the impact of the disease associated with a pathological accelerated aging that leads to impaired outcomes in SZ.

Original languageEnglish (US)
Pages (from-to)158-167
Number of pages10
JournalSchizophrenia bulletin
Volume44
Issue number1
DOIs
StatePublished - Jan 1 2018
Externally publishedYes

Keywords

  • biomarkers
  • episodic memory
  • gray matter volume
  • pathological accelerated aging
  • schizophrenia

ASJC Scopus subject areas

  • Psychiatry and Mental health

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