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Author Diliana Pecheva

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Neonatal white matter microstructure and emotional development during the pre-school years in children who were born very preterm.

Dana Kanel, Lucy Vanes, Diliana Pecheva, Laila Hadaya, Shona Falconer, Serena Counsell, David Edwards, Chiara Nosarti,

Children born very preterm (<33 weeks of gestation) are at a higher risk of developing socio-emotional difficulties compared to those born at term. In this longitudinal study, we tested the hypothesis that diffusion characteristics of white matter tracts implicated in socio-emotional processing assessed in the neonatal period are associated with ... Read more >>

eNeuro (eNeuro)
[2021, :]

Cited: 0 times

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Microstructural development across white matter from 9-13 years

Clare Palmer, Diliana Pecheva, John Rehner Iversen, Donald Hagler, Leo Sugrue, Pierre Nedelec, Chun Fan, Wesley Thompson, Terry Jernigan, Anders Dale,

Development in late childhood has been associated with microstructural changes in white matter (WM) that are hypothesized to underpin concurrent changes in cognitive and behavioral function. Restriction spectrum imaging (RSI) is a framework for modelling diffusion-weighted imaging that can probe microstructural changes within hindered and restricted compartments providing greater specificity ... Read more >>

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Multivariate genome-wide association study on tissue-sensitive diffusion metrics identifies key molecular pathways for axonal growth, synaptogenesis, and astrocyte-mediated neuroinflammation

Chun Chieh Fan, Robert Loughnan, Carolina Makowski, Diliana Pecheva, Chi-Hua Chen, Donald Hagler, Wesley Thompson, Nadine Parker, Dennis van der Meer, Oleksandr Frei, Ole Andreassen, Anders Dale,

The molecular determinants of tissue composition of the human brain remain largely unknown. Recent genome-wide association studies (GWAS) on this topic have had limited success due to methodological constraints. Here, we apply advanced whole-brain analyses on multi-shell diffusion imaging data and multivariate GWAS to two large scale imaging genetic datasets ... Read more >>

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Do intrinsic brain functional networks predict working memory from childhood to adulthood?

Han Zhang, Shuji Hao, Annie Lee, Simon B Eickhoff, Diliana Pecheva, Shirong Cai, Michael Meaney, Yap-Seng Chong, Birit F P Broekman, Marielle V Fortier, Anqi Qiu,

Working memory (WM) is defined as the ability to maintain a representation online to guide goal-directed behavior. Its capacity in early childhood predicts academic achievements in late childhood and its deficits are found in various neurodevelopmental disorders. We employed resting-state fMRI (rs-fMRI) of 468 participants aged from 4 to 55 years ... Read more >>

Hum Brain Mapp (Human brain mapping)
[2020, 41(16):4574-4586]

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Neural Transcription Correlates of Multimodal Cortical Phenotypes during Development.

Diliana Pecheva, Annie Lee, Joann S Poh, Yap-Seng Chong, Lynette P Shek, Peter D Gluckman, Michael J Meaney, Marielle V Fortier, Anqi Qiu,

During development, cellular events such as cell proliferation, migration, and synaptogenesis determine the structural organization of the brain. These processes are driven in part by spatiotemporally regulated gene expression. We investigated how the genetic signatures of specific neural cell types shape cortical organization of the human brain throughout infancy and ... Read more >>

Cereb Cortex (Cerebral cortex (New York, N.Y. : 1991))
[2020, 30(5):2740-2754]

Cited: 1 time

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Sex-Dependent Associations among Maternal Depressive Symptoms, Child Reward Network, and Behaviors in Early Childhood.

Qiang Wang, Han Zhang, Joann S Poh, Diliana Pecheva, Birit F P Broekman, Yap-Seng Chong, Lynette P Shek, Peter D Gluckman, Marielle V Fortier, Michael J Meaney, Anqi Qiu,

Maternal depression is associated with disrupted neurodevelopment in offspring. This study examined relationships among postnatal maternal depressive symptoms, the functional reward network and behavioral problems in 4.5-year-old boys (57) and girls (65). We employed canonical correlation analysis to evaluate whether the resting-state functional connectivity within a reward network, identified through ... Read more >>

Cereb Cortex (Cerebral cortex (New York, N.Y. : 1991))
[2020, 30(3):901-912]

Cited: 3 times

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Maternal Prenatal Stress Is Associated With Altered Uncinate Fasciculus Microstructure in Premature Neonates.

Alexandra Lautarescu, Diliana Pecheva, Chiara Nosarti, Julie Nihouarn, Hui Zhang, Suresh Victor, Michael Craig, A David Edwards, Serena J Counsell,

<h4>Background</h4>Maternal prenatal stress exposure (PNSE) increases risk for adverse psychiatric and behavioral outcomes in offspring. The biological basis for this elevated risk is poorly understood but may involve alterations to the neurodevelopmental trajectory of white matter tracts within the limbic system, particularly the uncinate fasciculus. Additionally, preterm birth is associated ... Read more >>

Biol Psychiatry (Biological psychiatry)
[2020, 87(6):559-569]

Cited: 15 times

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Fixel-based analysis of the preterm brain: Disentangling bundle-specific white matter microstructural and macrostructural changes in relation to clinical risk factors.

Diliana Pecheva, J-Donald Tournier, Maximilian Pietsch, Daan Christiaens, Dafnis Batalle, Daniel C Alexander, Joseph V Hajnal, A David Edwards, Hui Zhang, Serena J Counsell,

Diffusion MRI (dMRI) studies using the tensor model have identified abnormal white matter development associated with perinatal risk factors in preterm infants studied at term equivalent age (TEA). However, this model is an oversimplification of the underlying neuroanatomy. Fixel-based analysis (FBA) is a novel quantitative framework, which identifies microstructural and ... Read more >>

Neuroimage Clin (NeuroImage. Clinical)
[2019, 23:101820]

Cited: 11 times

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Recent advances in diffusion neuroimaging: applications in the developing preterm brain

Diliana Pecheva, Christopher Kelly, Jessica Kimpton, Alexandra Bonthrone, Dafnis Batalle, Hui Zhang, Serena Counsell,

Measures obtained from diffusion-weighted imaging provide objective indices of white matter development and injury in the developing preterm brain. To date, diffusion tensor imaging (DTI) has been used widely, highlighting differences in fractional anisotropy (FA) and mean diffusivity (MD) between preterm infants at term and healthy term controls; altered white ... Read more >>

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A tract-specific approach to assessing white matter in preterm infants.

Diliana Pecheva, Paul Yushkevich, Dafnis Batalle, Emer Hughes, Paul Aljabar, Julia Wurie, Joseph V Hajnal, A David Edwards, Daniel C Alexander, Serena J Counsell, Hui Zhang,

Diffusion-weighted imaging (DWI) is becoming an increasingly important tool for studying brain development. DWI analyses relying on manually-drawn regions of interest and tractography using manually-placed waypoints are considered to provide the most accurate characterisation of the underlying brain structure. However, these methods are labour-intensive and become impractical for studies with ... Read more >>

Neuroimage (NeuroImage)
[2017, 157:675-694]

Cited: 14 times

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