Limits...
Evoked Potentials and Memory/Cognition Tests Validate Brain Atrophy as Measured by 3T MRI (NeuroQuant) in Cognitively Impaired Patients.

Braverman ER, Blum K, Hussman KL, Han D, Dushaj K, Li M, Marin G, Badgaiyan RD, Smayda R, Gold MS - PLoS ONE (2015)

Bottom Line: These results positively correlated with decreased P300 values and WMS-III (WMS-III) scores differentially across various brain loci.The correlation between working memory and reduced FA in frontal lobes is marginally significant (p=0.0787).Generally, the validation of brain atrophy by P300 and WMS-III could lead to cost-effective methods utilizable in primary care medicine following further confirmation.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychiatry, McKnight Brain Institute, University of Florida College of Medicine, Gainesville, Florida, United States of America; Department of Clinical Neurology, PATH Foundation NY, New York, New York, United States of America.

ABSTRACT
To our knowledge, this is the largest study evaluating relationships between 3T Magnetic Resonance Imaging (MRI) and P300 and memory/cognitive tests in the literature. The 3T MRI using NeuroQuant has an increased resolution 15 times that of 1.5T MRI. Utilizing NeuroQuant 3T MRI as a diagnostic tool in primary care, subjects (N=169; 19-90 years) displayed increased areas of anatomical atrophy: 34.62% hippocampal atrophy (N=54), 57.14% central atrophy (N=88), and 44.52% temporal atrophy (N=69). A majority of these patients exhibited overlap in measured areas of atrophy and were cognitively impaired. These results positively correlated with decreased P300 values and WMS-III (WMS-III) scores differentially across various brain loci. Delayed latency (p=0.0740) was marginally associated with temporal atrophy; reduced fractional anisotropy (FA) in frontal lobes correlated with aging, delayed P300 latency, and decreased visual and working memory (p=0.0115). Aging and delayed P300 latency correlated with lower FA. The correlation between working memory and reduced FA in frontal lobes is marginally significant (p=0.0787). In the centrum semiovale (CS), reduced FA correlated with visual memory (p=0.0622). Lower demyelination correlated with higher P300 amplitude (p=0.0002). Compared to males, females have higher demyelination (p=0.0064). Along these lines, the higher the P300 amplitude, the lower the bilateral atrophy (p=0.0165). Hippocampal atrophy correlated with increased auditory memory and gender, especially in males (p=0.0087). In considering temporal lobe atrophy correlations: delayed P300 latency and high temporal atrophy (p=0.0740); high auditory memory and low temporal atrophy (p=0.0417); and high working memory and low temporal atrophy (p=0.0166). Central atrophy correlated with aging and immediate memory (p=0.0294): the higher the immediate memory, the lower the central atrophy. Generally, the validation of brain atrophy by P300 and WMS-III could lead to cost-effective methods utilizable in primary care medicine following further confirmation.

No MeSH data available.


Related in: MedlinePlus

Logistic Regression Model for Reduced FA in Frontal Lobes (ROC Curve: AUC = 0.690).
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4526533&req=5

pone.0133609.g008: Logistic Regression Model for Reduced FA in Frontal Lobes (ROC Curve: AUC = 0.690).

Mentions: The logistic regression model fit for reduced FA in frontal lobes (Fig 8; n = 128) (logit (Reduced FA in Frontal Lobes) = –5.229 + 0.0288*Age + 0.0117*Latency + 0.0160*Visual Immediate– 0.0250*Working Memory) is significant for predicting reduced FA in frontal lobes as a combination of age, latency, and two WMS scores (Visual Immediate and Working Memory) (p = 0.0115), but low R2 = 0.1405 again indicates that the fit can be improved further. The effect of age was found marginally significant (p = 0.0730; OR = 1.029), indicating that the higher age is, the more likely to have reduced FA in frontal lobes. The P300 latency was not found significant (p = 0.1391; OR = 1.012), although its meaning was intuitive: the higher latency is, the more likely to have reduced FA in frontal lobes. The visual immediate was not found significant (p = 0.1271; OR = 1.016). On the other hand, the working memory was found marginally significant (p = 0.0787; OR = 0.975), indicating that the higher working memory is, the less likely to have reduced FA in frontal lobes.


Evoked Potentials and Memory/Cognition Tests Validate Brain Atrophy as Measured by 3T MRI (NeuroQuant) in Cognitively Impaired Patients.

Braverman ER, Blum K, Hussman KL, Han D, Dushaj K, Li M, Marin G, Badgaiyan RD, Smayda R, Gold MS - PLoS ONE (2015)

Logistic Regression Model for Reduced FA in Frontal Lobes (ROC Curve: AUC = 0.690).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4526533&req=5

pone.0133609.g008: Logistic Regression Model for Reduced FA in Frontal Lobes (ROC Curve: AUC = 0.690).
Mentions: The logistic regression model fit for reduced FA in frontal lobes (Fig 8; n = 128) (logit (Reduced FA in Frontal Lobes) = –5.229 + 0.0288*Age + 0.0117*Latency + 0.0160*Visual Immediate– 0.0250*Working Memory) is significant for predicting reduced FA in frontal lobes as a combination of age, latency, and two WMS scores (Visual Immediate and Working Memory) (p = 0.0115), but low R2 = 0.1405 again indicates that the fit can be improved further. The effect of age was found marginally significant (p = 0.0730; OR = 1.029), indicating that the higher age is, the more likely to have reduced FA in frontal lobes. The P300 latency was not found significant (p = 0.1391; OR = 1.012), although its meaning was intuitive: the higher latency is, the more likely to have reduced FA in frontal lobes. The visual immediate was not found significant (p = 0.1271; OR = 1.016). On the other hand, the working memory was found marginally significant (p = 0.0787; OR = 0.975), indicating that the higher working memory is, the less likely to have reduced FA in frontal lobes.

Bottom Line: These results positively correlated with decreased P300 values and WMS-III (WMS-III) scores differentially across various brain loci.The correlation between working memory and reduced FA in frontal lobes is marginally significant (p=0.0787).Generally, the validation of brain atrophy by P300 and WMS-III could lead to cost-effective methods utilizable in primary care medicine following further confirmation.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychiatry, McKnight Brain Institute, University of Florida College of Medicine, Gainesville, Florida, United States of America; Department of Clinical Neurology, PATH Foundation NY, New York, New York, United States of America.

ABSTRACT
To our knowledge, this is the largest study evaluating relationships between 3T Magnetic Resonance Imaging (MRI) and P300 and memory/cognitive tests in the literature. The 3T MRI using NeuroQuant has an increased resolution 15 times that of 1.5T MRI. Utilizing NeuroQuant 3T MRI as a diagnostic tool in primary care, subjects (N=169; 19-90 years) displayed increased areas of anatomical atrophy: 34.62% hippocampal atrophy (N=54), 57.14% central atrophy (N=88), and 44.52% temporal atrophy (N=69). A majority of these patients exhibited overlap in measured areas of atrophy and were cognitively impaired. These results positively correlated with decreased P300 values and WMS-III (WMS-III) scores differentially across various brain loci. Delayed latency (p=0.0740) was marginally associated with temporal atrophy; reduced fractional anisotropy (FA) in frontal lobes correlated with aging, delayed P300 latency, and decreased visual and working memory (p=0.0115). Aging and delayed P300 latency correlated with lower FA. The correlation between working memory and reduced FA in frontal lobes is marginally significant (p=0.0787). In the centrum semiovale (CS), reduced FA correlated with visual memory (p=0.0622). Lower demyelination correlated with higher P300 amplitude (p=0.0002). Compared to males, females have higher demyelination (p=0.0064). Along these lines, the higher the P300 amplitude, the lower the bilateral atrophy (p=0.0165). Hippocampal atrophy correlated with increased auditory memory and gender, especially in males (p=0.0087). In considering temporal lobe atrophy correlations: delayed P300 latency and high temporal atrophy (p=0.0740); high auditory memory and low temporal atrophy (p=0.0417); and high working memory and low temporal atrophy (p=0.0166). Central atrophy correlated with aging and immediate memory (p=0.0294): the higher the immediate memory, the lower the central atrophy. Generally, the validation of brain atrophy by P300 and WMS-III could lead to cost-effective methods utilizable in primary care medicine following further confirmation.

No MeSH data available.


Related in: MedlinePlus