Lower serum levels of IL-13 is associated with increased carotid intima-media thickness in old age subjects.

BACKGROUND: Cardiovascular diseases due to atherosclerosis represent the major cause of disability and mortality in old age subjects. The atherosclerotic process is linked to a low grade of systemic inflammation with the involvement of many cytokines and inflammatory proteins. Among them, evidence from animal studies suggests that IL-13 has a protective property. However, the role of IL-13 in the pathogenesis of atherosclerosis in humans is still unknown. AIMS: With this study, we aim to investigate a potential association between IL-13 and carotid intima-media thickness (IMT) in old age subjects. METHODS: This is a retrospective study conducted among 79 old age subjects (over 75 years old). All subjects underwent IMT assessment by high-resolution B-mode ultrasonography and IL-13 measurement in serum by ELISA. RESULTS: Subjects (41 M/38F) had a mean age of 81.0 ± 4.5 years and were mostly overweight. Stratifying the whole cohort by IMT thickness (IMT ≤ 0.9, n = 17; IMT ≥ 1 and ≤ 1.3, n = 50; IMT ≥ 1.4, n = 12) among the main variables explored, only BMI and triglycerides differed among groups, having subjects with higher IMT significantly higher BMI and lower triglycerides. Serum IL-13 levels significantly differed among groups having subjects with IMT ≥ 1.4 lower levels as compared to other groups (p < 0.0001). In all sample population, IMT values significantly correlate with IL-13 levels (r = - 0.454, p < 0.0001). Indeed, a linear regression analysis showed that independent of age, gender, body mass index, triglycerides, systolic blood pressure, statin use and smoking habit, lower IL-13 serum levels were associated with higher IMT values. CONCLUSIONS: IL-13, an anti-inflammatory cytokine, may have a protective role in the human atherosclerotic process. It could be used as an effective and promising novel therapeutic target development.

Elderly patients with cognitive impairment have a high risk for functional decline during hospitalization: The GIFA Study.

BACKGROUND: We tested the hypothesis that cognitive impairment upon admission (CIA) and cognitive decline (CD) during hospitalization are associated with an increased risk for functional decline (FD) in older inpatients. METHODS: The Italian Group of Pharmacoepidemiology in the Elderly (Gruppo Italiano di Farmacoepidemiologia nell'Anziano, GIFA) project was a multicenter survey of 9061 older patients admitted to Italian hospitals between 1991 and 1997. CIA was defined as a Hodkinson Abbreviated Mental Test score <7 on admission. The percentage of participants who developed FD, defined as loss of the ability to perform without help one or more activities of daily living between admission and discharge, was compared in patients who did and did not have CIA, and between those who lost at least one point in Hodkinson Abbreviated Mental Test score (CD) and those who did not. RESULTS: Mean age was 77.4 years, and women represented 52.3% of the sample. CIA was present in 21.0% of the patients. During hospitalization, 176 patients (1.9%) experienced FD (4% of those with CIA vs 1.3% of those without CIA). In multivariate analysis, CIA was an important risk factor for FD (odds ratio 2.4; 95% confidence interval, 1.7-3.5; p <.001), independent of age, gender, comorbidity, polypharmacy, and disability on admission. CD occurred in 3.7% of the sample and was strongly associated with an increased risk for FD (odds ratio 16.0; 95% confidence interval, 10.8-23.6; p <.001). CONCLUSIONS: Elderly patients with CIA have a higher risk for FD. New strategies should be implemented to prevent FD in patients with cognitive impairment, who account for a high percentage of older persons who are admitted to hospitals.

Validation of the five-item geriatric depression scale in elderly subjects in three different settings.

OBJECTIVES: To test the effectiveness of a five-item version of the Geriatric Depression Scale (GDS) for the screening of depression in community-dwelling older subjects, hospitalized older patients, and nursing home residents. DESIGN: A cross-sectional study. SETTING: A geriatric acute care ward, a geriatric outpatient clinic, and a nursing home. PARTICIPANTS: One hundred eighty-one cognitively intact older subjects. MEASUREMENT: All the participants had a comprehensive geriatric assessment including a neuropsychological evaluation by a geriatrician experienced in the management of depression. The five-item GDS was compared with the 15-item version of the GDS using the clinical diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition criteria as the criterion standard. The sensitivity, the specificity, the overall accuracy, positive and negative predictive values, and positive and negative likelihood ratios were calculated. The agreement between each of two different versions of the GDS and the clinical diagnosis and the test-retest and the interrater reliability of the five-item scale were also evaluated. RESULTS: In the whole sample, 48.1% of the subjects were depressed. The five-item GDS had a sensitivity of 0.94 (0.91-0.98), a specificity of 0.81 (0.75-0.87), a positive predictive value of 0.81 (0.75-0.87), a negative predictive value of 0.94 (0.90-0.97), a positive likelihood ratio of 4.92 (4.39-5.5), and a negative likelihood ratio of 0.07 (0.06-0.08). The five-item GDS and the 15-item GDS showed a significant agreement with the clinical diagnosis of depression (kappa = 0.74 for both scales). The five-item GDS had good interrater reliability (kappa = 0.88) and test-retest reliability (kappa = 0.84). Similar values were obtained in each setting and in both sexes. CONCLUSION: The five-item GDS is as effective as the 15-item GDS for the screening of depression in cognitively intact older subjects.