Association between Cognitive Function and Clustered Cardiovascular Risk of Metabolic Syndrome in Older Adults at Risk of Cognitive Decline

OBJECTIVES

Metabolic syndrome (MetS) represents a cluster of obesity and insulin resistance-related comorbidities. Abdominal obesity, hypertension, elevated triglyceride and glucose levels are components of MetS and may have a negative effect on cognitive function, but few cognitive studies have examined the combined risk severity. We sought to determine which specific cognitive abilities were associated with MetS in older adults at risk of cognitive decline.

DESIGN

Cross-sectional study.

PARTICIPANTS

108 AIBL Active participants with memory complaints and at least one cardiovascular risk factor.

MEASUREMENTS

Cardiovascular parameters and blood tests were obtained to assess metabolic syndrome criteria. The factors of MetS were standardized to obtain continuous z-scores. A battery of neuropsychological tests was used to evaluate cognitive function.

RESULTS

Higher MetS z-scores were associated with poorer global cognition using ADAS-cog (adjusted standardized beta=0.26, SE 0.11, p<0.05) and higher Trail Making B scores (adjusted beta=0.23, SE 0.11, p<0.05). Higher MetS risk was related to lower cognitive performance.

CONCLUSION

Combined risk due to multiple risk factors in MetS was related to lower global cognitive performance and executive function. A higher MetS risk burden may point to opportunities for cognitive testing in older adults as individuals may experience cognitive changes.

Patient or client? The opinions of people attending a psychiatric clinic

Aims and Method

The use of the term ‘client’ has become increasingly popular among non-medical staff in psychiatric practice. We sought to describe the preferences and attitudes of people attending a psychiatric clinic to the terms patient and client. A questionnaire and case note review was employed.

Results

147 people completed the questionnaire, of these 77% preferred the term patient. There was no subgroup that preferred the term client. Attitudes towards the two terms were significantly different, with a greater antipathy demonstrated towards the term client.

Clinical Implications

The majority of people attending a psychiatric clinic prefer the use of the term patient; the term client is disliked.

Volumetric and visual assessment of the mesial temporal structures in Alzheimer's disease

BACKGROUND

Alzheimer's disease is the commonest cause of dementia. Clinical diagnosis of Alzheimer's disease may be difficult. Magnetic resonance imaging has a role to play in diagnosis.

AIM

To assess whether volumetric and/or visual assessment of the mesial temporal structures is useful in separating patients with Alzheimer's disease from age matched controls.

METHODS

Twenty-four patients with Alzheimer's disease diagnosed by NINCDS/ADRDA criteria and 15 age matched controls were studied with magnetic resonance imaging (MRI) and volumetric techniques. Segmented volumes of the mesial temporal structures were assessed visually and volumetrically.

RESULTS

Volumetric analysis demonstrated significant (p < .001) differences between the two groups, but showed overlap in individual cases. Discriminant function analysis predicted correct group membership (patient or control) in 85% of cases. Visual assessment alone demonstrated a sensitivity of 92% and a specificity of 93% in distinguishing the Alzheimer patients from controls.

CONCLUSION

Volumetric and visual assessment of the mesial temporal structures is useful in separating Alzheimer patients from controls. Overlap is present in individual cases. Visual assessment was as useful in separating the two groups as the volumetric analysis.

Heterogeneity of adverse hepatic reactions to tetrahydroaminoacridine

Of 14 patients taking tetrahydroaminoacridine (THA) for the trial treatment of Alzheimer's disease, five developed mildly abnormal liver function tests. Four asymptomatic patients with persistently abnormal serum transaminase levels underwent liver biopsy, in order to determine the nature of the hepatic lesions. One subject had granulomatous hepatitis while three showed focal, predominantly centrilobular, liver cell necrosis and mild fatty change. One of the latter showed both tissue and peripheral blood eosinophilia. The liver function tests of the fifth patient, who was symptomatic, became normal after reduction of the dose of THA so he did not undergo biopsy. These findings suggest that the pathogenic mechanisms for THA-induced liver injury are heterogeneous ranging from hypersensitivity reactions to direct injury, and including combinations of the two. Patients receiving THA for treatment of Alzheimer's disease need regular monitoring of liver function.