Comparative Effectiveness of Integrated Peer Support and Clinical Staffing Models for Community-Based Residential Mental Health Rehabilitation: A Prospective Observational Study

This observational study compared the outcomes of consumers receiving community-based residential mental health rehabilitation support in Australia under a clinical staffing model and an integrated staffing model where Peer Support Workers are the majority component of the staffing profile. Reliable and clinically significant (RCS) change between admission and discharge in functional and clinical assessment measures were compared for consumers receiving care under the clinical (n = 52) and integrated (n = 93) staffing models. Covariate analyses examined the impact of known confounders on the outcomes of the staffing model groups. No statistically significant differences in RCS improvement were identified between the staffing models. However, logistic regression modelling showed that consumers admitted under the integrated staffing model were more likely to experience reliable improvement in general psychiatric symptoms and social functioning. The findings support the clinical and integrated staffing models achieving at least equivalent outcomes for community-based residential rehabilitation services consumers.

The onset and offset of psychosis--and what happens in between--a commentary on ‘Reappraising the long-term course and outcome of psychotic disorders: the AESOP-10 Study’ by Morgan et al. (2014)

As one would expect for a heterogeneous syndrome like schizophrenia, at the individual level the course of symptoms and disability vary widely. Mindful that the definition of recovery/remission varies widely between studies, a recent systematic review and meta-analysis reported that the proportion of those with schizophrenia who recover on both symptom and functional outcome is modest (approximately 14%). A 10-year follow-up of the English multicentre AESOP incidence study provides more 'fine-grained' insights into the time course of symptom fluctuation for schizophrenia and other psychotic disorders. We highlight selected findings from the new study and speculate on the role of different outcome domains for future study (e.g., symptom, occupational/functional, cognition, physical health, patient-nominated outcomes). Because recovery is a multifaceted process, we need to develop a panel of practical and operationalizable criteria for remission and recovery.

Apolipoprotein E genotype does not affect the age of onset of dementia in families with defined tau mutations

We have assessed whether apolipoprotein E (ApoE) genotype influences the age of onset of dementia in a series of families with frontal temporal dementia with defined mutations in the tau gene. In contrast to the situation in Alzheimer's disease (AD), we could find no evidence that the age of onset of disease was influenced by the ApoE genotype.

Association of missense and 5'-splice-site mutations in tau with the inherited dementia FTDP-17

Thirteen families have been described with an autosomal dominantly inherited dementia named frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17), historically termed Pick's disease. Most FTDP-17 cases show neuronal and/or glial inclusions that stain positively with antibodies raised against the microtubule-associated protein Tau, although the Tau pathology varies considerably in both its quantity (or severity) and characteristics. Previous studies have mapped the FTDP-17 locus to a 2-centimorgan region on chromosome 17q21.11; the tau gene also lies within this region. We have now sequenced tau in FTDP-17 families and identified three missense mutations (G272V, P301L and R406W) and three mutations in the 5' splice site of exon 10. The splice-site mutations all destabilize a potential stem-loop structure which is probably involved in regulating the alternative splicing of exon10. This causes more frequent usage of the 5' splice site and an increased proportion of tau transcripts that include exon 10. The increase in exon 10+ messenger RNA will increase the proportion of Tau containing four microtubule-binding repeats, which is consistent with the neuropathology described in several families with FTDP-17.

Localization of frontotemporal dementia with parkinsonism in an Australian kindred to chromosome 17q21-22

An Australian family with autosomal dominant presenile nonspecific dementia was recently described. The disease results in behavioral changes, usually disinhibition, followed by the onset of dementia accompanied occasionally by parkinsonism. Twenty-eight affected individuals were identified with an age of onset of 39 to 66 years (mean, 53 +/- 8.9 years). We mapped the disease locus to an approximately 26-cM region of chromosome 17q21-22 with a maximum two-point LOD score of 2.87. Affected individuals share a common haplotype between markers D17S783 and D17S808. This region of chromosome 17 contains the loci for several neurodegenerative diseases that lack distinctive pathological features, suggesting that these dementias, collectively referred to as frontotemporal dementia with parkinsonism linked to chromosome 17 (FTDP-17), are caused by mutations in the same gene. The entire coding region of five genes, mapped to the FTDP-17 candidate region, were also sequenced. This analysis included the microtubule-associated protein tau that is the major component of the paired helical filaments observed in Alzheimer's disease. No pathogenic mutations were identified in either the tau gene or in any of the other genes analyzed.

Thought disorder and executive ability

A neurocognitive model of thought disorder is proposed that links: (1) impaired ability to establish set with poverty of speech; (2) impaired ability to maintain set with positive thought disorder; and (3) impaired ability to shift sets with perseveration in speech. The aim of this study is to examine performance on tests sensitive to set ability in patients prone to thought disorder. Patients with schizophrenia (n = 36), mania (n = 18) and a well control group (n = 20) were assessed on two occasions separated by 4 weeks. Testing included: a free speech sample, Controlled Oral Word Association test, Stroop test, Wisconsin Card Sort test, and the Trail Making test. Impaired ability to maintain set in the face of interference was correlated with positive thought disorder, impaired ability to establish set was correlated with poverty of speech, and impaired ability to shift set was associated with perseveration in speech. The associations between impaired set ability and types of thought disorder support a neurocognitive model implicating impaired executive ability in the pathogenesis of thought disorder.

A family with autosomal dominant, non-Alzheimer's presenile dementia

OBJECTIVE

A rare family pedigree is described with a multigenerational history of an early onset, non-Alzheimer's dementia consistent with autosomal dominant inheritance. Information on five generations, with 26 suspected or proven cases of dementia, are presented.

METHOD

Previous work on the family was collated and verified. The pedigree was updated. Thirty-three family members agreed to be interviewed for the present study. Standardised clinical information was obtained using the Cambridge Mental Disorders of the Elderly Examination (CAMDEX) National Adult Reading Test (NART), vocabulary and digit substitution subscales of the Wechster adult intelligence scale-revised edition (WARS-R). Abbot samples were taken for biochemical and genetic analysis.

RESULTS

Fifteen males and 11 females have been affected. The age of onset of dementia in those for whom data were available (n = 12) ranged from 39 to 64 years with a mean of 53 years. The duration of illness ranged from 4 to 14 years and the age at death ranged from 49 to 69 years (mean 62 years). Autopsy data exist for nine cases. In one case the neuropathology was consistent with Alzheimer's disease. In two cases the diagnosis of Pick's disease was made on the basis of frontal or frontal/temporal lobe atrophy without Pick bodies or cells. One case diagnosed as Pick's disease had frontal/temporal lobe atrophy with cells resembling Pick's bodies. In the five remaining cases there were no distinctive neuropathological features to differentiate the type of dementia.

CONCLUSIONS

The importance of recognising familial dementia, collating information on multiple generations and prospectively collecting standardised data is discussed.