Legionella pneumophila secretes a mitochondrial carrier protein during infection

The Mitochondrial Carrier Family (MCF) is a signature group of integral membrane proteins that transport metabolites across the mitochondrial inner membrane in eukaryotes. MCF proteins are characterized by six transmembrane segments that assemble to form a highly-selective channel for metabolite transport. We discovered a novel MCF member, termed Legionellanucleotide carrier Protein (LncP), encoded in the genome of Legionella pneumophila, the causative agent of Legionnaire's disease. LncP was secreted via the bacterial Dot/Icm type IV secretion system into macrophages and assembled in the mitochondrial inner membrane. In a yeast cellular system, LncP induced a dominant-negative phenotype that was rescued by deleting an endogenous ATP carrier. Substrate transport studies on purified LncP reconstituted in liposomes revealed that it catalyzes unidirectional transport and exchange of ATP transport across membranes, thereby supporting a role for LncP as an ATP transporter. A hidden Markov model revealed further MCF proteins in the intracellular pathogens, Legionella longbeachae and Neorickettsia sennetsu, thereby challenging the notion that MCF proteins exist exclusively in eukaryotic organisms.

Providing a ‘whole-of-family’ approach to care: family-focused practices in mental health services

Introduction: Family members including children are all impacted by a family member’s mental illness. Although mental health services are increasingly encouraged to engage in family-focused practice, this is not a well-understood concept or practice in mental health care. Methods: An integrative review using systematic methods was conducted with international literature, with the aim of identifying concepts and practices of family-focused practice in child and youth and adult mental health services. Results: Findings from 40 peer-reviewed literature identified a range of understandings and applications of family-focused practice, including who comprises the ‘family’, whether the focus is family of origin or family of procreation or choice, and whether the context of practice is child and youth or adult. ‘Family’ as defined by its members forms the foundation for practice that aims to provide a whole-of-family approach to care. Six core practices comprise a family focus to care: assessment; psychoeducation; family care planning and goal-setting; liaison between families and services; instrumental, emotional and social support; and a coordinated system of care between families and services. Conclusion: By incorporating key principles and the core family-focused practices into their care delivery, clinicians can facilitate a whole-of-family approach to care and strengthen family members’ wellbeing and resilience, and their individual and collective health outcomes.

Promises, Promises...Family Farms and Estoppel (Again)

Family farms are a fertile source of litigation, especially when it comes to succession planning and inter-generational transfers. The problems are obvious: large value assets, emotional ties to the land, a lack of retirement planning and the ‘older’ generation’s unwillingness to relinquish control, and managing the expectations of siblings or others who have worked on the farm. Recent years have seen a spate of estoppel cases involving farms in both Northern Ireland and England and Wales, brought by children, nephews, close friends and long-term partners who were promised or had expected to inherit farms. The recent decision of the English Court of Appeal in Davies v Davies is another example, this time involving an adult daughter who had worked on her parents’ farm for years in the belief that it would pass to her. When her parents changed their minds, this particular daughter brought a successful proprietary estoppel claim. The issue then turned to satisfying the claim, and what financial remedy the daughter was entitled to.