Altered Cerebral Blood Flow in Type 2 Diabetes Mellitus Without Cognitive Impairment

Jiaying YANG; Xuewei ZHANG; Xueqing LIU; Jiamin ZHOU; Miao HE; Jing LI; Xiali SHAO; Wenhui LI; Yuzhou GUAN; Weihong ZHANG; Feng FENG

doi:10.3881/j.issn.1000-503X.16155

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Acta Academiae Medicinae Sinicae ›› 2025, Vol. 47 ›› Issue (2) : 219-225. DOI: 10.3881/j.issn.1000-503X.16155

Original Articles

Altered Cerebral Blood Flow in Type 2 Diabetes Mellitus Without Cognitive Impairment

Jiaying YANG ¹ ,
Xuewei ZHANG ² ,
Xueqing LIU ¹ ,
Jiamin ZHOU ¹ ,
Miao HE ¹ ,
Jing LI ³ ,
Xiali SHAO ⁴ ,
Wenhui LI ⁵ ,
Yuzhou GUAN ⁶ ,
Weihong ZHANG ¹ ,
Feng FENG ¹

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Abstract

Objective To investigate the alterations of cerebral blood flow(CBF)in type 2 diabetic mellitus(T2DM) patients without cognitive impairment by using arterial spin labeling(ASL)technique.Methods A total of 23 T2DM patients without cognitive impairment and 23 healthy controls(HC)matched by age,sex,and education attainment were recruited.Their clinical data were collected,and neuropsychological tests and cerebral magnetic resonance imaging were performed.Then,the outcomes of clinical features,neuropsychological tests,and global and regional CBF were compared between the two groups.The significant regional zCBF(z-transformed relative CBF)values were extracted and correlated with clinical data and neuropsychological scores in T2DM patients,controlling age,sex,and education.Results No significant difference was found in whole brain CBF between the two groups(P=0.155),while significantly higher CBF was identified in the left superior temporal gyrus and left insula in the T2DM group(Gaussian random field correction,initial threshold P < 0.001,cluster level P < 0.05).No correlation was observed between the significant regional zCBF values and the clinical data or the neuropsychological scores in T2DM patients(all P>0.05).Conclusion Alterations in cerebral hemodynamics may precede cognitive function changes in T2DM,suggesting that the ASL technique is promising for early monitoring of cerebral hemodynamic changes associated with cognitive impairment in patients with T2DM.

Key words

type 2 diabetes mellitus / arterial spin labeling / cerebral blood flow

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Jiaying YANG , Xuewei ZHANG , Xueqing LIU , et al . Altered Cerebral Blood Flow in Type 2 Diabetes Mellitus Without Cognitive Impairment[J]. Acta Academiae Medicinae Sinicae. 2025, 47(2): 219-225 https://doi.org/10.3881/j.issn.1000-503X.16155

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