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Biomedical subjects

Roberto Bernabei

Publications and source records attributed to Roberto Bernabei.

At least 19 recordsLinked to original sources
PubMed2007

Free insulin-like growth factor-I and cognitive function in older persons living in community.

CONTEXT: Increasing evidences from experimental and human studies suggest that the activity of the growth hormone (GH/insulin-like growth factor-I) axis may contribute to the age-related cognitive decline and poor cognition in late life. OBJECTIVE: The aim of the present study was to evaluate the relationship of total serum free IGF-I and its binding protein-3 with cognitive performance in older persons aged 80 years or older. DESIGN: Data are from baseline evaluation of the ilSIRENTE study (n=353). Cognitive performance was evaluated using five items enclosed in the Minimum Data Set for Home Care assessment form: short-term memory, procedural memory, cognitive skills in daily decision making, verbal expression, comprehension. Free insulin-like growth factor-I (free IGF-I) and IGF-binding protein-3 (IGFBP-3) in blood were measured. Analysis of covariance (ANCOVA) was used to examine the relationship between cognitive impairment and the serum free IGF-I and IGFBP-3 concentrations, after adjustment for potential confounding variables. RESULTS: After adjustment for potential confounders, which included age, gender, education, cerebrovascular disease, ischemic heart disease, congestive heart failure, hypertension, diabetes, depression, Parkinson diseases, thyroid diseases, smoking status, alcohol abuse, body mass index, and number of medications, individuals with verbal expression problems (n=20) and individuals with comprehension problems (n=24) had a significantly lower serum levels of readily dissociable IGF-I than participants without cognitive impairments. The serum IGFBP-3 presented the same behavior of free IGF-I. CONCLUSION: The present study suggests that among old-old subjects living in the community lower levels of total serum free IGF-I and IGFBP-3 are associated with impairment of cognitive performance. This finding suggests that the GH/IGF-I axis may play an important role in the age-related decline of cognitive performance.

Activities of Daily Living↗
PubMed2007

Cross-sectional association between behavioral symptoms and potential elder abuse among subjects in home care in Italy: results from the Silvernet Study.

OBJECTIVES: The objectives of this study were to evaluate the prevalence of potential elder abuse among older adults receiving home care and to assess the association between behavioral symptoms and potential abuse. METHODS: Data on 4,630 subjects aged 65 or older receiving home care in Italy were collected using the Minimum Data Set for Home Care assessment. Potential abuse included signs of physical or emotional abuse and neglect. Behavioral symptoms were present if the participant exhibited one or more of the following symptoms in the 3 days before the assessment: wandering, verbally abusive, physically abusive, socially inappropriate behavior, and active resistance to care. RESULTS: Mean age of participants was 80.5 years (standard deviation: 7.7) and 2,761 (60%) were female. Signs of potential abuse were identified in 336 of 3,869 (9%) participants without behavioral symptoms and 126 of 761 (17%) with behavioral symptoms. After adjustment for potential confounders, presence of behavioral symptoms was significantly associated with potential abuse (odds ratio [OR]: 1.56; 95% confidence interval [CI]: 1.21-2.00). Examining behavioral symptoms separately, wandering was negatively associated with potential abuse (OR: 0.58; 95% CI: 0.36-0.97), whereas other symptoms were positively associated with this outcome (verbally abusive behavior OR: 1.69, 95% CI: 1.24-2.31; physically abusive behavior OR: 1.42, 95% CI: 1.00-2.03; socially inappropriate behavior OR: 1.78, 95% CI: 1.26-2.53; active resistance of care OR: 1.69, 95% CI: 1.20-2.38). CONCLUSION: Signs of potential abuse are common among older adults in home care in Italy and they are associated with the presence of behavioral symptoms.

Aged↗
PubMed2006

Non malignant daily pain and risk of disability among older adults in home care in Europe.

Aim of the present observational study was to evaluate the association between daily pain and incident disability in elderly subjects living in the community. We used data from the AgeD in HOme Care (AD-HOC) project, a 1 year longitudinal study enrolling subjects aged 65 or older receiving home care in 11 European countries. Daily pain was defined as any type of pain or discomfort in any part of the body manifested every day in the seven days before the baseline assessment. Disability performing activities of daily living (ADLs) was defined as the need of assistance in 1 or more of the following ADL: eating, dressing, transferring, mobility in bed, personal hygiene and toileting. Mean age of 1520 subjects participating the study was 82.1 (standard deviation 6.9) years, and 1178 (77.5%) were women and 695 (45.7%) reported daily pain at the baseline assessment. Overall, 123/825 participants (19.0%) with daily pain and 132/695 (14.9%) without daily pain reported incident disability during the 1 year follow up of the study. After adjustment for potential confounders, participants with daily pain had a significantly higher risk of developing disability, compared with other participants (hazard ratio 1.36; 95% CI: 1.05-1.78). The risk of disability increased with pain severity and with number of painful sites. In conclusion among old subjects living in the community, daily pain is associated with an increased risk of disability.

Activities of Daily Living↗
PubMed2006

In a prospective observational study, influenza vaccination prevented hospitalization among older home care patients.

OBJECTIVE: The aim of the study is (1) to describe the prevalence of vaccination against influenza in older home care patients and (2) to investigate the protective effect of influenza vaccination for hospitalization events. STUDY DESIGN AND SETTING: This is an observational study conducted in four large cohorts of elderly patients in home care during the 1998-1999, 1999-2000, 2000-2001, and 2001-2002 influenza seasons. We analyzed data from the Italian Silver Network Home Care project. A total of 2,201 patients were enrolled in the present study. The main outcome measures were prevalence of vaccination against influenza and the rate of hospitalization according to vaccination status and influenza season. RESULTS: The rate of influenza vaccination was around 48% of the studied sample. During the follow-up including the peak of influenza and the total influenza season, 412 subjects (40%) were hospitalized among vaccinated compared to 610 subjects (59%) among not vaccinated (P<0.001). After adjusting for age, gender, location of home care program, and all the variables significantly different between vaccinated and not-vaccinated subjects, vaccinated subjects were less likely to be hospitalized compared to not-vaccinated subjects (OR, 0.73; 95% CI 0.60-0.90). CONCLUSIONS: Vaccination against influenza has an important prognostic implication for frail geriatric patients living in the community.

Age Distribution↗
PubMed2006

Proposal of a service delivery integration index of home care for older persons: application in several European cities.

PURPOSE: To propose an integration index of home care delivery to older persons, to study its validity and to apply it to home care services of European cities. THEORY: Home care delivery integration was based on two dimensions referring to process-centred integration and organisational structure approach. METHOD: Items considered as part of both dimensions according to an expert consensus (face validity) were extracted from a standardised questionnaire used in "Aged in Home care" (AdHoc) study to capture basic characteristics of home care services. Their summation leads to a services' delivery integration index. This index was applied to AdHoc services. A factor analysis was computed in order to empirically test the validity of the theoretical constructs. The plot of the settings was performed. RESULTS: Application of the index ranks home care services in four groups according to their score. Factor analysis identifies a first factor which opposes working arrangement within service to organisational structure bringing together provisions for social care. A second factor corresponds to basic nursing care and therapies. Internal consistency for those three domains ranges from 0.78 to 0.93. When plotting the different settings different models of service delivery appear. CONCLUSION: The proposed index shows that behind a total score several models of care delivery are hidden. Comparison of service delivery integration should take into account this heterogeneity.

Journal Article↗
PubMed2006

Body mass index, free insulin-like growth factor I, and physical function among older adults: results from the ilSIRENTE study.

The aim of the present study was to evaluate the mediating role played by obesity on the relationship of free insulin-like growth factor I (IGF-I) and IGF-binding protein-3 (IGFBP-3) with muscle strength and physical performance. Data were from baseline evaluation of the ilSIRENTE Study. Muscle strength was measured by hand grip strength. Physical performance was assessed using the walking speed and the 0-3 Short Physical Performance Battery (SPPB) score. Based on its median value, free IGF-I was categorized in the following two groups: low IGF-I (IGF-I <0.65 ng/ml; n = 174) and high IGF-I (IGF-I > or =0.65 ng/ml; n = 175). Similarly, IGFBP-3 was categorized in the following two groups: low IGFBP-3 (IGFBP-3 <4,319.9 ng/ml; n = 174) and high IGFBP-3 (IGFBP-3 > or =4,319.9 ng/ml; n = 175). Body mass index (BMI) was categorized as follows: <25 kg/m(2) (n = 160), 25-29.9 kg/m(2) (n = 133), > or =30 kg/m(2) (n = 56). Mean age of the 349 participants was 85.8 yr, and 234 (67%) were women. After adjusting for potential confounders, no significant association of IGF-I and IGFBP-3 with study outcomes was observed. After the study sample was stratified by BMI groups, compared with participants with low IGF-I level, those with high IGF-I level had a significantly better grip strength [35.2 +/- 1.6 vs. 29.2 +/- 2.0 (SE) kg, P = 0.03], walking speed (0.55 +/- 0.04 vs. 0.40 +/- 0.04 m/s, P = 0.01), and SPPB score (1.9 +/- 0.1 vs. 1.5 +/- 0.1 m/s, P = 0.01) but only in the group with BMI > or =30 kg/m(2) and not in other BMI groups. A statistically significant interaction between BMI and IGF-I level was observed on all study outcomes. By contrast, no association was observed between IGFBP-3 and study outcomes, independently of BMI. In conclusion, high IGF-I level is associated with better physical function in older persons with obesity, but not in nonobese subjects.

Age Factors↗
PubMed2006

Association between daily pain and physical function among old-old adults living in the community: results from the ilSIRENTE study.

Little is known about the impact of pain on physical function among old-old subjects. The aim of the present cross-sectional study was to assess the association of daily pain with muscle strength and physical performance in a population of subjects aged 80 or older living in the community. We used data from baseline evaluation of the ilSIRENTE Study. Muscle strength was measured by hand grip strength. Physical performance was assessed using the physical performance battery score, which is based on three timed tests: 4-m walking speed, balance, and chair stand tests. Daily pain was defined as any type of pain or discomfort in any part of the body manifested every day over the 7 days preceding the assessment. Mean age of 273 participants was 85.1 (SD 4.6) years, 181 (66.3%) were women and 150 (54.9%) reported daily pain. After adjustment for potential confounders, participants with daily pain had lower grip strength and physical performance battery score (indicating worse performance) than other participants (hand grip strength: daily pain 31.5 kg, SE 1.4, no daily pain 35.0, SE 1.1, p = 0.02; physical performance battery score: daily pain 6.5, SE 0.3, no daily pain 7.2, SE 0.3, p = 0.05). Both hand grip strength and physical performance battery score progressively declined as pain severity increased. In conclusion, the present study shows that among old-old subjects living in the community, daily pain is highly prevalent and that this condition is associated with impaired muscle strength and physical performance.

Activities of Daily Living↗
PubMed2006

Anemia and cognitive performance in hospitalized older patients: results from the GIFA study.

BACKGROUND: Anemia represents a major risk factor for adverse health-related events in older persons. The aim of this study was to evaluate the association between hemoglobin levels/anemia and cognitive function in hospitalized older persons. METHOD: Data are from the Gruppo Italiano di Farmacovigilanza nell'Anziano (GIFA) study. Hemoglobin levels (in g/dL) were measured upon admission to hospital; anemia was defined according to the WHO criteria. Cognitive performance was assessed by the Abbreviated Mental Test (AMT) on admission; an AMT score <7 defined cognitive impairment. Logistic regressions and analyses of covariance were performed to evaluate the relationship between cognitive status and hemoglobin levels/anemia. RESULTS: Mean age of the sample (n = 13,301) was 72.0 years. Participants with cognitive impairment presented a higher prevalence of anemia (47%) compared to those without cognitive impairment (35%, p < 0.001). Adjusted logistic regressions showed that hemoglobin levels/anemia were significantly associated with cognitive impairment (OR = 0.96, 95%CI = 0.94-0.99, p = 0.004, and OR = 1.32, 95%CI = 1.18-1.48, p < 0.001, respectively). Patients with anemia and cognitive impairment at the hospital admission presented a higher number of impaired Activities of Daily Living compared to those with only one or none of the studied conditions (p for trend < 0.001). CONCLUSION: Low hemoglobin levels and anemia are independently associated with cognitive performance in older persons admitted to acute care units.

Activities of Daily Living↗
PubMed2006

Fatal neuroleptic malignant syndrome in a previously long-term user of clozapine following its reintroduction in combination with paroxetine.

A 77-year-old patient with initial behavioral and psychological symptoms of dementia was treated with clozapine (50 mg/daily). Since no clinical benefit was apparent, clozapine was discontinued after six weeks and the patient started on paroxetine (20 mg/daily). After three weeks on paroxetine, he was given another trial of clozapine at a starting dosage of 25 mg/daily. While clozapine had previously been well tolerated, this time he rapidly developed fever, mental confusion, lethargy, muscle spasms and rigidity. The diagnosis of neuroleptic malignant syndrome was delayed, because there was no leukocytosis and serum creatine phosphokinase was initially not elevated. Subcutaneous apomorphine was then given but, after an initial improvement, the patient developed a multiple organ failure syndrome and died.

Aged↗
PubMed2006

Total serum cholesterol and recovery from disability among hospitalized older adults.

BACKGROUND: The association between total serum cholesterol and health outcomes among older adults is controversial. The objective of the present study was to determine within a cohort of acutely hospitalized disabled elderly patients whether total cholesterol predicts recovery from disability in basic activities of daily living (ADL). METHODS: Patients (3150) 65 years old or older admitted to 81 acute care units in Italy and presenting with ADL disability at hospital admission were included in this study. ADL disability was defined as need of assistance or total dependence in one or more ADLs (eating, dressing, personal hygiene, transferring, and toilet use). Recovery was defined as no disability at hospital discharge in any of the five ADLs considered. RESULTS: Mean age of study participants was 80.5 +/- 7.2 years, and 1305 (41.1%) were men. The rate of recovery from ADL disability was 14.5% for participants with total cholesterol < 200 mg/dL (n = 306/2108), 20.2% for those with total cholesterol between 200 and 239 mg/dL (n = 144/713), and 23.1% for those with total cholesterol > or = 240 mg/dL (n = 76/329). After adjustment for potential confounders, relative to that of patients with cholesterol < 200 mg/dL, risk ratios for recovery were 1.31 for participants with cholesterol between 200 and 239 mg/dL (95% confidence interval [CI], 1.07-1.62) and 1.36 (95% CI, 1.04-1.79) for those with cholesterol > or = 240 mg/dL. After exclusion of 769 patients with total cholesterol < 145 mg/dL, the risk ratios (compared with those for participants with cholesterol < 200 mg/dL) for recovery were 1.33 (95% CI, 1.07-1.66) for participants with cholesterol between 200 and 239 mg/dL and 1.41 (95% CI, 1.06-1.88) for patients with cholesterol > or = 240 mg/dL. CONCLUSIONS: Among hospitalized disabled older adults, elevated levels of cholesterol are associated with increased rate of recovery from ADL disability.

Activities of Daily Living↗
PubMed2006

Comorbidity and physical function: results from the aging and longevity study in the Sirente geographic area (ilSIRENTE study).

BACKGROUND: Physical function measures have gained increased importance in the evaluation of older persons. The presence of comorbidity is a major and growing issue in geriatrics. OBJECTIVE: To evaluate the relationship between comorbidity and physical function in community-dwelling older persons. METHODS: Data are from baseline evaluation of the ilSIRENTE study (n = 364). Physical performance was assessed using the Short Physical Performance Battery (SPPB) and the 4-meter walking test. Muscle strength was measured by hand-grip strength. Functional performance was assessed using Basic and Instrumental Activities of Daily Living (ADLs and IADLs, respectively). Comorbidity was defined as >or=3 clinical conditions. Analyses of covariance and linear regressions were performed to evaluate the relationship between comorbidity and physical function. RESULTS: The mean age of participants was 85.9 (SD = 4.9) years. About one third (37.4%) of participants reported >or=3 clinical conditions. Participants with comorbidity had significantly worse results in all the physical function tests. Participants with comorbidity had significantly lower adjusted results for the 4-meter walking test (0.444 m/s) and the SPPB score (6.131) compared to those without comorbidity (0.531 m/s and 7.221; all p = 0.001, respectively). Participants with comorbidity were more IADL-impaired (3.152) than participants without comorbidity (2.767; p = 0.04). No significant association of ADLs and hand-grip strength with comorbidity was reported. Similar strengths of association for the 4-meter walking test (per SD increase, beta = -0.280; p = 0.001) and the SPPB (per SD increase, beta = -0.285; p = 0.001) with comorbidity were reported. CONCLUSIONS: Physical function measures, especially walking speed and SPPB, are associated with comorbidity. Physical performance measures may improve the clinical evaluation of older persons.

Activities of Daily Living↗
PubMed2005

Impact of inappropriate drug use among hospitalized older adults.

OBJECTIVE: Criteria for inappropriate drug use developed by Beers have been widely used in drug utilization reviews as the basis for educational materials and to assess the quality of prescribing. However, there is inconclusive evidence that these criteria can impact on patient outcomes. The objective of this study was to evaluate the impact of inappropriate drug use on all-cause mortality, adverse drug reactions (ADRs) and length of stay among in-hospital patients. METHODS: We performed a retrospective, cohort study on 5,152 patients aged 65 years or older admitted to 81 hospitals in Italy between 1997 and 1998. Inappropriate drug use was defined by 2003 Beers criteria. Outcomes of the study were: (a) in-hospital mortality; (b) incidence of ADR occurring during hospital stay; (c) length of hospital stay 13 days or more. RESULTS: The mean age of 5,152 participants was 78.8 years (standard deviation = 8.4 years), and 2,463 (47.8%) were men. During hospital stay, 1,475 (28.6% of the study sample) patients received one or more inappropriate drugs. After adjusting for potential confounders, use of inappropriate drugs was not associated significantly with either mortality [odds ratio (OR) 1.05; 95% confidence intervals (CI): 0.75-1.48], ADR (OR 1.20; 95% CI: 0.89-1.61) or length of stay 13 days or more (OR 1.09; 95% CI: 0.95-1.25). CONCLUSIONS: This study did not show any significant effect of inappropriate drug use defined by Beers 2003 criteria on health outcomes among hospitalized older adults. Further studies conducted in different settings, using additional health outcomes and alternate measures of inappropriate drug use, are needed.

Aged↗
PubMed2005

Indwelling catheter use in home care: elderly, aged 65+, in 11 different countries in Europe.

OBJECTIVE: To describe possible differences/patterns in the use of indwelling urinary catheters (IUC) in Europe. DESIGN: A prospective, population-based, assessment study. SETTING: The target population was 4,455 (random sample of 405 from each of 11 countries) aged 65+ receiving home care. METHODS: The clients were assessed by using the Resident Assessment Instrument MDS-HC; epidemiological and medical characteristics of clients and service utilisation were recorded. MEASUREMENTS: The frequency of use of IUC related to the patients' activities of daily living (ADL) and cognitive functioning. RESULTS: The sample consisted of 4,010 informants: 74% female, with mean age 82.3 +/-7.3 years; men 80.9 +/-7.5 years and female 82.8 +/-7.3 years. A total of 216 (5.4%) clients were using IUC. In Italy 23% were using a catheter compared with 0% in The Netherlands. Catheter use was more common in men than in women (11.5% versus 3.3%). Use of IUC was significantly correlated to certain diseases and symptoms and increase in care burden and formal services. Twenty-six per cent of the informants with indwelling catheters scored three or more on a hierarchical ADL scale (0-6). The clients using IUC in the Nordic countries were less dependent on care than in the other European countries. Models built on multivariate analysis explained 37% of the use of IUC. Tradition and attitudes may explain the differences between the sites. CONCLUSIONS: Catheter use is associated with formal or family care burden. The need for nursing home placement ought to be considered in some cases. A stricter criterion for using IUC may be considered in the southern European countries.

Activities of Daily Living↗
PubMed2005

Responsiveness to cholinesterase inhibitors in Alzheimer's disease: a possible role for the 192 Q/R polymorphism of the PON-1 gene.

Cholinesterase inhibitors (ChEIs) are the most established treatment strategy in Alzheimer's disease (AD). However, the responsiveness to these drugs is widely heterogeneous and the majority of AD subjects do not respond to treatment. Paraoxonase-1 (PON-1) is a potent endogenous ChEI and has been widely studied for its ability to hydrolyze environmental neurotoxins. Serum levels and biological activity of PON-1 display wide inter-individual variability and are strongly influenced by a common polymorphism at position 192 of the PON-1 gene. Here, we evaluated whether this gene variation is associated with differences in the ability of AD subjects to respond to therapy with ChEIs. We found that individuals that respond to ChEIs had a significantly higher frequency of the R allele, compared to non-responders (P<0.05). This study indicates that the 192 Q/R polymorphism of the PON-1 gene might influence responsiveness to ChEIs, with potentially important implications for the treatment of AD. Mutations of genes encoding for endogenous modulators of the cholinergic system should merit further investigation as prognostic indicators of individual response to treatment in AD subjects.

Aged↗
PubMed2005

Prevalence and predictors of influenza vaccination among frail, community-living elderly patients: an international observational study.

The annual winter outbreak of influenza is one of the major cause of morbidity and mortality among frail elderly people. The aim of the present study was to identify prevalence and predictors of influenza vaccination in a large European population of frail and old people living in community. This was an observational study conducted in 11 European countries. We enrolled 3878 people 65 years and older already receiving home care services within the urban areas. All participants were assessed with the Minimum Data Set-Home Care (MDS-HC) instrument containing over 300 items, including socio-demographic, physical and cognitive characteristics of patients as well as medical diagnoses and medications received. A single question about the influenza vaccination status was used. The rate of influenza vaccination was around 59% of the studied sample. Significant geographical variations were evident in the prevalence of vaccination ranging from 31% of Prague (Czech Republic) to 88% of Rotterdam (The Netherlands). Overall, persons living alone were less likely to receive influenza vaccine as compared with those living with an informal caregiver (OR, 0.78; 95% CI 0.67-0.90). Similarly, cognitive impairment and presence of economic problems were associated with a lower likelihood of being vaccinated (OR: 0.69, 95% CI 0.59-0.80 and OR, 0.58; 95% CI 0.45-0.74, respectively). On the other hand, old age and comorbidity were associated with an higher probability of being vaccinated. In conclusion, more than 40% of subjects in this sample of home care patients in Europe did not receive influenza vaccination. Recommendations for influenza vaccination have not been adequately implemented.

Activities of Daily Living↗
PubMed2005

Conventional and atypical antipsychotics and the risk of hospitalization for ventricular arrhythmias or cardiac arrest.

BACKGROUND: Conventional antipsychotic drugs have been implicated as a cause of ventricular arrhythmias and cardiac arrest, but no definitive information is available regarding atypical antipsychotics. We compared the effect of conventional and atypical antipsychotics on the risk of hospitalization for ventricular arrhythmias and cardiac arrest. METHODS: We conducted a case-control study on residents of nursing homes in 6 US states by using data from the Minimum Data Set linked to Medicare inpatient claims. Cases were residents hospitalized for ventricular arrhythmias or cardiac arrest between July 4, 1998, and December 30, 1999. For each case, we identified up to 5 controls residing in the same facility during the same period. The sample consisted of 649 cases and 2962 controls. RESULTS: Use of conventional antipsychotics was associated with a nearly 2-fold increase in risk of hospitalization for ventricular arrhythmias or cardiac arrest (adjusted odds ratio, 1.86; 95% confidence interval, 1.27-2.74). There was no increased risk associated with the use of atypical antipsychotics (odds ratio, 0.87; 95% confidence interval, 0.58-1.32). The risk of hospitalization for ventricular arrhythmias or cardiac arrest was highest among conventional users with cardiac disease (odds ratio, 3.27; 95% confidence interval, 1.95-5.47). However, cardiac disease and conventional antipsychotics did not show a synergistic effect (synergy index, 1.19). CONCLUSIONS: Conventional but not atypical antipsychotics are associated with an increased risk of hospitalization for ventricular arrhythmias and cardiac arrest. The prescription of conventional antipsychotics in patients with cardiac disease should be carefully weighed.

Aged↗