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The advanced toolkits recently developed to measure time-resolved Ca2+ signalling in living C. reinhardtii cells are also discussed, suggesting how they can improve the study of the role of Ca2+ signals in the cellular response of microalgae to environmental stimuli.

Increased rates of smoking cessation will be essential to maximize the population benefit of low-dose CT screening for lung cancer. The NCI's Smoking Cessation at Lung Examination (SCALE) Collaboration includes eight randomized trials, each assessing evidence-based interventions among smokers undergoing lung cancer screening (LCS). We examined predictors of trial enrollment to improve future outreach efforts for cessation interventions offered to older smokers in this and other clinical settings.

We included the six SCALE trials that randomized individual participants. We assessed demographics, intervention modalities, LCS site and trial administration characteristics, and reasons for declining.

Of 6,285 trial- and LCS-eligible individuals, 3,897 (62%) declined and 2,388 (38%) enrolled. In multivariable logistic regression analyses, Blacks had higher enrollment rates (OR 1.5, 95% CI 1.2,1.8) compared to Whites. Compared to 'NRT Only' trials, those approached for 'NRT+prescription medication' trials had reater among Blacks compared to Whites. The findings offer practical information for the implementation of cessation trials and interventions in the lung cancer screening context and other clinical settings, regarding intervention modalities that may be most appealing to older, long-term smokers.

We explored enrollment rates and reasons for declining across six smoking cessation trials in the lung cancer screening setting. Offering multiple accrual methods and pharmacotherapy options predicted increased enrollment across trials. Enrollment rates were also greater among Blacks compared to Whites. The findings offer practical information for the implementation of cessation trials and interventions in the lung cancer screening context and other clinical settings, regarding intervention modalities that may be most appealing to older, long-term smokers.Leucine-rich repeat kinase 2 (LRRK2) has been implicated in the pathogenesis of Parkinson disease. It has been shown that Lrrk2 knockout (KO) rodents have enlarged lamellar bodies (LBs) in their alveolar epithelial type II cells, although the underlying mechanisms remain unclear. Here we performed proteomic analyses on LBs isolated from Lrrk2 KO mice and found that the LB proteome is substantially different in Lrrk2 KO mice compared with wild-type mice. In Lrrk2 KO LBs, several Rab proteins were increased, and subunit proteins of BLOC-1-related complex (BORC) were decreased. The amount of surfactant protein C was significantly decreased in the bronchoalveolar lavage fluid obtained from Lrrk2 KO mice, suggesting that LB exocytosis is impaired in Lrrk2 KO mice. We also found that the enlargement of LBs is recapitulated in A549 cells upon KO of LRRK2 or by treating cells with LRRK2 inhibitors. Using this model, we show that KO of BORCS6, a BORC subunit gene, but not other BORC genes, causes LB enlargement. Our findings implicate the LRRK2-BORCS6 pathway in the maintenance of LB morphology.Spinocerebellar ataxia type 2 is a polyglutamine (polyQ) disease associated with an expanded polyQ domain within the protein product of the ATXN2 gene. Interestingly, polyQ repeat expansions in ATXN2 are also associated with amyotrophic lateral sclerosis (ALS) and parkinsonism depending upon the length of the polyQ repeat expansion. The sequence encoding the polyQ repeat also varies with disease presentation a pure CAG repeat is associated with SCA2, whereas the CAG repeat in ALS and parkinsonism is typically interrupted with the glutamine encoding CAA codon. Here we asked if the purity of the CAG sequence encoding the polyQ repeat in ATXN2 could impact the toxicity of the ataxin-2 protein in vivo in Drosophila. We found that ataxin-2 encoded by a pure CAG repeat conferred toxicity in the retina and nervous system, whereas ataxin-2 encoded by a CAA-interrupted repeat or CAA-only repeat failed to confer toxicity, despite expression of the protein at similar levels. Furthermore, the CAG-encoded ataxin-2 protein aggregated in the fly eye, while ataxin-2 encoded by either a CAA/G or CAA repeat remained diffuse. The toxicity of the CAG-encoded ataxin-2 protein was also sensitive to the translation factor eIF4H, a known modifier of the toxic GGGGCC repeat in flies. These data indicate that ataxin-2 encoded by a pure CAG vs interrupted CAA/G polyQ repeat domain is associated with differential toxicity, indicating that mechanisms associated with the purity of the sequence of the polyQ domain contribute to disease.

Intergenerational support between aging parents and adult children is important to the well-being of both groups, especially during public health emergencies. However, few previous studies have examined the effects of daily support between parents and children on their well-being during public health emergencies. To fill in this gap, we examined the association between daily support and well-being in mothers and their adult children during the COVID-19 pandemic.

Seventy-seven pairs of mothers (aged 44-80 years, M = 53.78, SD = 9.57) and adult children (aged 18-54 years, M = 26.61, SD = 9.46; 19% male) in mainland China participated in a 14-day daily diary study during a 14-day stay-at-home period. All of the participants reported the daily emotional and instrumental support they had given to and received from their mother/child each day for 14 consecutive days. Crenolanib ic50 Their daily positive affect and negative affect were also measured.

Receiving more support on a given day was associated with providing more support on that day, suggesting a daily reciprocity. This finding was consistent across mothers and children. A lower level of being under-benefitted on a day was associated with better daily well-being of children, but not that of mothers. Providing support, but not receiving support, was positively associated with mothers' daily well-being, whereas receiving support, but not providing support, was positively associated with children's daily well-being.

This study provides evidence of daily intergenerational support during a global public health emergency. The findings shed light on the importance of daily reciprocity and its implications for well-being.

This study provides evidence of daily intergenerational support during a global public health emergency. The findings shed light on the importance of daily reciprocity and its implications for well-being.