Frontiers in Neuroscience (Feb 2022)

Integrative Functional, Molecular, and Transcriptomic Analyses of Altered Intrinsic Timescale Gradient in Depression

  • Shaoqiang Han,
  • Shaoqiang Han,
  • Shaoqiang Han,
  • Shaoqiang Han,
  • Shaoqiang Han,
  • Shaoqiang Han,
  • Shaoqiang Han,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Ruiping Zheng,
  • Shuying Li,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Bingqian Zhou,
  • Yu Jiang,
  • Yu Jiang,
  • Yu Jiang,
  • Yu Jiang,
  • Yu Jiang,
  • Yu Jiang,
  • Yu Jiang,
  • Caihong Wang,
  • Caihong Wang,
  • Caihong Wang,
  • Caihong Wang,
  • Caihong Wang,
  • Caihong Wang,
  • Caihong Wang,
  • Yarui Wei,
  • Yarui Wei,
  • Yarui Wei,
  • Yarui Wei,
  • Yarui Wei,
  • Yarui Wei,
  • Yarui Wei,
  • Jianyue Pang,
  • Hengfen Li,
  • Yong Zhang,
  • Yong Zhang,
  • Yong Zhang,
  • Yong Zhang,
  • Yong Zhang,
  • Yong Zhang,
  • Yong Zhang,
  • Yuan Chen,
  • Yuan Chen,
  • Yuan Chen,
  • Yuan Chen,
  • Yuan Chen,
  • Yuan Chen,
  • Yuan Chen,
  • Jingliang Cheng,
  • Jingliang Cheng,
  • Jingliang Cheng,
  • Jingliang Cheng,
  • Jingliang Cheng,
  • Jingliang Cheng,
  • Jingliang Cheng

DOI
https://doi.org/10.3389/fnins.2022.826609
Journal volume & issue
Vol. 16

Abstract

Read online

The pathophysiology and pharmacology of depression are hypothesized to be related to the imbalance of excitation–inhibition that gives rise to hierarchical dynamics (or intrinsic timescale gradient), further supporting a hierarchy of cortical functions. On this assumption, intrinsic timescale gradient is theoretically altered in depression. However, it remains unknown. We investigated altered intrinsic timescale gradient recently developed to measure hierarchical brain dynamics gradient and its underlying molecular architecture and brain-wide gene expression in depression. We first presented replicable intrinsic timescale gradient in two independent Chinese Han datasets and then investigated altered intrinsic timescale gradient and its possible underlying molecular and transcriptional bases in patients with depression. As a result, patients with depression showed stage-specifically shorter timescales compared with healthy controls according to illness duration. The shorter timescales were spatially correlated with monoamine receptor/transporter densities, suggesting the underlying molecular basis of timescale aberrance and providing clues to treatment. In addition, we identified that timescale aberrance-related genes ontologically enriched for synapse-related and neurotransmitter (receptor) terms, elaborating the underlying transcriptional basis of timescale aberrance. These findings revealed atypical timescale gradient in depression and built a link between neuroimaging, transcriptome, and neurotransmitter information, facilitating an integrative understanding of depression.

Keywords