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2018
DOI: 10.5056/jnm17076
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Regional Brain Activity During Rest and Gastric Water Load in Subtypes of Functional Dyspepsia: A Preliminary Brain Functional Magnetic Resonance Imaging Study

Abstract: Background/AimsFunctional dyspepsia (FD) remains a great clinical challenge since the FD subtypes, defined by Rome III classification, still have heterogeneous pathogenesis. Previous studies have shown notable differences in visceral sensation processing in the CNS in FD compared to healthy subjects (HS). However, the role of CNS in the pathogenesis of each FD subtype has not been recognized.MethodsTwenty-eight FD patients, including 10 epigastric pain syndrome (EPS), 9 postprandial distress syndrome (PDS), an… Show more

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Cited by 28 publications

(24 citation statements)
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“…In this study, machine learning algorithms were applied to MRI image processing, and the results suggested that it can clearly distinguish the complex brain function differences between healthy volunteers and FES patients, which was consistent with the research results of Kerepesi et al [15], indicating the machine learning algorithm can improve the accuracy of the MRI signal detection results, which had great reference value for monitoring the efficacy of dexmedetomidine combined with MECT treatment. en, fMRI images were included to analyze brain changes in FES patients, and it was found that, before treatment, the ALFF value of the right parietal lobule was higher than the Ctrl group, which was similar to the research results of Suzuki et al [16] and Chen et al [17], indicating that the brain area was active here, while ALFF in the other three places was elevated, but it was not statistically significant; in contrast with before treatment, brain activity in the four brain regions treated by dexmedetomidine combined with MECT was reduced. e four brain regions monitored are located around the frontal lobe-limbic system-parietal nerve anatomical loop, and studies have shown that this loop participates in the pathogenesis of schizophrenia [18], indicating that MECT may have affected the activity intensity of brain neurons in this part, thereby inhibiting psychosis.…”
Section: Discussion
supporting
confidence: 78%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…In this study, machine learning algorithms were applied to MRI image processing, and the results suggested that it can clearly distinguish the complex brain function differences between healthy volunteers and FES patients, which was consistent with the research results of Kerepesi et al [15], indicating the machine learning algorithm can improve the accuracy of the MRI signal detection results, which had great reference value for monitoring the efficacy of dexmedetomidine combined with MECT treatment. en, fMRI images were included to analyze brain changes in FES patients, and it was found that, before treatment, the ALFF value of the right parietal lobule was higher than the Ctrl group, which was similar to the research results of Suzuki et al [16] and Chen et al [17], indicating that the brain area was active here, while ALFF in the other three places was elevated, but it was not statistically significant; in contrast with before treatment, brain activity in the four brain regions treated by dexmedetomidine combined with MECT was reduced. e four brain regions monitored are located around the frontal lobe-limbic system-parietal nerve anatomical loop, and studies have shown that this loop participates in the pathogenesis of schizophrenia [18], indicating that MECT may have affected the activity intensity of brain neurons in this part, thereby inhibiting psychosis.…”
Section: Discussion
supporting
confidence: 78%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…For example, Vandenberghe et al (2007) found that FD patients showed activations in the bilateral cerebellum during painful gastric distension. Other FD studies also reported significant abnormalities of cerebellum activity in the resting state (Zhou et al, 2013;Chen et al, 2018). Similarly, some studies found similar altered cerebellar activations in patients with chronic ALFF, amplitude of low-frequency fluctuation; fALFF, fractional amplitude of low-frequency fluctuation; FSL, the functional MRI of the brain software library; fMRI, functional magnetic resonance imaging; FWE, family-wise error; GRF, Gaussian random field; HCs, healthy subjects; NA, not applicable; PET, positron emission computed tomography; PET-CT, positron emission computed tomography-computed tomography; QS, quality scores; REST, the resting-state fMRI data analysis toolkit; ReHo, regional homogeneity; SD, standard deviation; SPM, statistical parametric mapping; TFCE, threshold-free cluster enhancement.…”
Section: Figure
mentioning
confidence: 86%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The precentral and postcentral gyri, also known as the primary motor and primary sensory areas, play important roles in movement control and planning, and sensory reception and feedback. Increased precentral and postcentral gyri activities in FD patients have been widely reported in prior neuroimaging studies focusing on fluorodeoxyglucose (28) and cerebral cannabinoid receptor (29), which utilized positron emission tomography (PET) and resting – or task – state fMRI (13). Our findings of increased spontaneous brain activity in the precentral and postcentral gyri are in line with the hypothesis of cortical sensitization in FD, despite the absence of any visceral stimulation (30).…”
Section: Discussion
mentioning
confidence: 99%
“…Increased fractional anisotropy in posterior thalamic radiata has been found in prior diffusion tensor imaging studies in patients with FD (34,35). In addition, prior studies have consistently revealed increased insula and thalamus glycometabolism (28), serotonin transporter expression (36), spontaneous brain activity (13,37,38), and interhemispheric functional connectivity (39) in patients with FD. Therefore, our findings of increased ALFF in the insula and thalamus are in line with previous findings in FD, and further suggest increased somatosensory processing, especially visceral information processing in both EPS and PDS.…”
Section: Discussion
mentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.