Of Mice, Whales, Jellyfish and Men: In Pursuit of Increased Longevity

Regenerative characteristics of the immortal jellyfish, Turritopsis dohrnii, and their potential implications for human aging

The jellyfish Turritopsis dohrnii (T. Nutricala) is a cnidarian of the Oceaniidae family that lives in the Mediterranean Sea. It is known as the immortal jellyfish since, through a process of cell development called transdifferentiation, it manages to return to a polyp state. The role of regeneration processes and their impact on aging have been studied in recent years for their potential applications in the development of more efficient pharmacology to address disorders related to aging. Reviewing the terms related to transdifferentiation in jellyfish and understanding the underlying mechanisms can help comprehend diverse processes such as aging, regeneration, and the molecular bases of diseases like cancer. This paper's purpose is to provide a description of the regenerative characteristics of the jellyfish T. dohrnii, investigate how its regenerative processes allow it to rejuvenate, and determine if these tissue restoration processes are also found in humans.

Early life adversities and lifelong health outcomes: A review of the literature on large, social, long-lived nonhuman mammals

Social nonhuman animals are powerful models for studying underlying factors related to lifelong health outcomes following early life adversities (ELAs). ELAs can be linked to lifelong health outcomes depending on the species, system, sensitive developmental periods, and biological pathways. This review focuses on the literature surrounding ELAs and lifelong health outcomes in large, social, relatively long-lived nonhuman mammals including nonhuman primates, canids, hyenas, elephants, ungulates, and cetaceans. These mammals, like humans but unlike the most-studied rodent models, have longer life histories, complex social structures, larger brains, and comparable stress and reproductive physiology. Collectively, these features make them compelling models for comparative aging research. We review studies of caregiver, social, and ecological ELAs, often in tandem, in these mammals. We consider experimental and observational studies and what each has contributed to our knowledge of health across the lifespan. We demonstrate the continued and expanded need for comparative research to inform about the social determinants of health and aging in both humans and nonhuman animals.

Quality of individual and group level interventions for first-episode psychosis at the tertiary psychiatric hospital in Uganda

Background

Individual and group level interventions have the largest effect on outcomes in patients with the first episode of psychosis. The quality of these individual and group level interventions provided to first-episode psychosis patients in Uganda is unclear.

Aim

To determine the quality of the individual and group level interventions provided to first episode psychosis patients in Uganda

Setting

The study was performed at the only tertiary psychiatric hospital in Uganda.

Methods

A retrospective chart review of recently discharged adult in-patients with the first episode of psychosis was performed. The proportion of participants who received different essential components for individual and group level interventions were calculated. From the different proportions, the quality of the services across the individual and group interventions was determined using the first-episode psychosis services fidelity scale (FEPS-FS). The FEPS-FS assigns a grade of 1–5 on a Likert scale depending on the proportion of patients who received the different components of the intervention. Twelve essential components across the individual and group interventions were assessed and their quality quantified.

Results

The final sample included 156 first-episode psychosis patients. The median age was 27 years (inter-quartile range [IQR] [24–36]) and 55% of the participants were female. All 12 essential components had poor quality with the range of scores on the FEPS-FS between one and three. Only one essential component assessed (use of single antipsychotics) had moderate quality.

Conclusion

Amongst current services at the Butabika National Referral Mental Hospital in Uganda, the essential components for individual and group level interventions for psychotic disorders are of poor quality. Further studies are required on how the quality of these interventions can be improved.

New Therapeutic Approaches and Biomarkers for Increased Healthspan

Healthcare costs have increased in developing countries over the last few decades, mostly due to the escalation in average life expectancy and the concomitant increase in age-related disorders. To address this issue, widespread research is now being undertaken across the globe with the aim of finding a way of increasing healthy aging. A number of potential interventions have already shown promise, including lifestyle changes and the use of natural products or pharmaceuticals that may delay the onset of diseases associated with the aging process. In parallel, a number of potential biomarkers have already been identified that can be used for assessing risk of developing age-associated disorders and for monitoring response to therapeutic interventions. This review describes the most recent advances towards the goal of achieving healthier aging with fewer disabilities that may lead to enhanced quality of life and reduced healthcare costs around the world.