Antibiotics that target mitochondria extend lifespan in C. elegans.

Aging is a continuous degenerative process caused by a progressive decline of cell and tissue functions in an organism. It is induced by the accumulation of damage that affects normal cellular processes, ultimately leading to cell death. It has been speculated for many years that mitochondria play a key role in the aging process. In the aim of characterizing the implications of mitochondria in aging, here we used Caenorhabditis elegans (C. elegans) as an organismal model treated a panel of mitochondrial inhibitors and assessed for survival. In our study, we assessed survival by evaluating worm lifespan, and we assessed aging markers by evaluating the pharyngeal muscle contraction, the accumulation of lipofuscin pigment and ATP levels. Our results show that treatment of worms with either doxycycline, azithromycin (inhibitors of the small and the large mitochondrial ribosomes, respectively), or a combination of both, significantly extended median lifespan of C. elegans, enhanced their pharyngeal pumping rate, reduced their lipofuscin content and their energy consumption (ATP levels), as compared to control untreated worms, suggesting an aging-abrogating effect for these drugs. Similarly, DPI, an inhibitor of mitochondrial complex I and II, was capable of prolonging the median lifespan of treated worms. On the other hand, subjecting worms to vitamin C, a pro-oxidant, failed to extend C. elegans lifespan and upregulated its energy consumption, revealing an increase in ATP level. Therefore, our longevity study reveals that mitochondrial inhibitors (i.e., mitochondria-targeting antibiotics) could abrogate aging and extend lifespan in C. elegans.

Relationship between age, comorbidities and complications in head and neck cancer patients undergoing curative surgery.

BACKGROUND: Both age and comorbidity are accepted as significant prognostic factors for adverse perioperative outcomes in major surgery. Elderly patients may be overlooked for radical treatment for fear of poor perioperative outcome. We aim to assess the relationship between age, comorbidities and post-operative outcomes in a tertiary head and neck unit. METHODS: A retrospective analysis was undertaken on 651 patients who underwent surgery for head and neck cancer at a tertiary hospital between 2007 and 2014. RESULTS: A total of 253 (38.9%) patients were aged ≥70 years and 398 (61.1%) patients were ≤69 years. Age alone did not predict prolonged post-operative stay, perioperative complications nor perioperative mortality. Congestive cardiac failure and/or complicated diabetes were significantly associated with poor outcomes, as was male sex. CONCLUSION: Patients of any age with cardiac failure or complicated diabetes have a higher rate of post-operative complications in head and neck surgery.

Perspectives on schizophrenia over the lifespan: a qualitative study.

Longitudinal data suggest heterogeneity in the long-term course of schizophrenia. It is unclear how older adults with schizophrenia perceive changes in their experience of schizophrenia over the lifespan. We interviewed 32 adults aged 50 years and older diagnosed with schizophrenia (mean duration 35 years) about their perceived changes in the symptoms of schizophrenia and functioning over the lifespan. Interview transcripts were analyzed using grounded theory techniques of coding, consensus, co-occurrence, and comparison. The study was conducted by a research partnership involving a multidisciplinary team of academic researchers, community members, and mental health clients engaged in all aspects of study design, interviewing, and analysis and interpretation of data. Results revealed that, in regard to early course of illness, participants experienced confusion about diagnosis, active psychotic symptoms, and withdrawal/losses in social networks. Thereafter, nearly all participants believed that their symptoms had improved, which they attributed to increased skills in self-management of positive symptoms. In contrast to consistency among participants in describing illness course, there was marked heterogeneity in perceptions about functioning. Some participants were in despair about the discrepancy between their current situations and life goals, others were resigned to remain in supported environments, and others working toward functional attainments and optimistic about the future. In conclusion, middle-aged and older adults with schizophrenia believed that their symptoms had improved over their lifespan, yet there was substantial variability among participants in how they perceived their functioning. Functional rehabilitation may need to be tailored to differences in perceptions of capacity for functional improvement.

Perceived participation restriction in middle-aged and older persons with schizophrenia.

OBJECTIVE: The purpose of this study was to examine clinical characteristics associated with participation restriction in middle-aged and older persons with schizophrenia. METHOD: Seventy-eight patients with schizophrenia or schizoaffective disorder, ranging in age from 40 to 81 were included in the study. Participants completed an assessment consisting of sociodemographics, psychiatric symptom severity, depressive symptom severity, cognitive functioning, and participation restriction. RESULTS: A majority of patients reported experiencing participation restriction. Greater severity of participation restriction was predicted by more severe depressive symptoms, less severe general psychiatric symptoms, and better cognitive functioning. Together, these variables accounted for 45% of variance in participation restriction scores with depressive symptoms accounting for the largest proportion of variance. Participation restriction was not associated with age. CONCLUSIONS: Participation restriction and depressive symptoms are related in individuals with schizophrenia; however, the direction of their relationship is unclear and requires further investigation.

Unmet needs for services for older adults with mental illness: comparison of views of different stakeholder groups.

OBJECTIVE: The authors assessed the need for mental health services among older adults in San Diego County, California, by determining what needs were not being addressed by existing services, what services were necessary to address these needs, and how much consensus there was among different stakeholders with respect to the problems and solutions related to service delivery. METHODS: Semistructured interviews were conducted with 23 health care and social service providers and administrators, 16 services consumers and other older adults (55 years of age and older), and 19 caregivers/family members and patient/client advocates. This was followed by four focus groups comprised of 18 providers and administrators, six focus groups comprised of 50 consumers and other older adults, and five focus groups comprised of 39 caregivers (family members and advocates). RESULTS: The unmet needs fell into three categories: mental health services, physical health services, and social services. Two interrelated themes were identified by participants: 1) the need for age-appropriate and culturally appropriate services to overcome barriers to mental health services access, use, and quality; and 2) the interrelations between unmet needs that address prevention as well as treatment of mental illness, including socialization and social support, transportation, housing, and physical health care. Differences in stakeholder assessment of unmet needs were associated with respective roles in delivery and use of mental health services. CONCLUSION: Age-appropriate and culturally appropriate solutions that address both prevention and treatment may represent the best strategies for addressing the challenges of mental illness and are most likely to be endorsed by all three groups of stakeholders.