Falmouth Hospital

Abstract Knowledge of recruitment and its variability in marine fish populations contributes to sustainable fisheries but a full understanding remains elusive. An earlier study showed that haddock (Melanogrammus aeglefinus) stocks exhibited consistently higher variability and lower reproductive rates compared to cod (Gadus morhua) stocks in the geographic regions where they co-occurred. Thus, cod may have a higher resilience to overexploitation, whereas haddock stocks may be more likely to be rescued by chance strong recruitments events. Since that initial study, the ecosystems and stocks have experienced large structural and functional changes, as well as changes in management practice and ocean warming. Here, we updated the previous earlier analysis with new data and found that despite large changes in the ecosystems explored, the patterns of recruitment variability have persisted. Recruitment variability remains higher in haddock than in cod, and the maximum annual reproduction rate at low spawning stock biomass (SSB) remains higher in cod than in haddock, although the latter difference is now less pronounced. Despite the economic and ecological importance of cod and haddock, and their long history of scientific scrutiny, the persistent difference in their reproductive biology remains unexplained.

Is the increased use in wildlife conservation of techniques derived from military and security services appropriate? One aspect of this issue that remains poorly considered is whether all actors engaged in conservation projects that have a security orientation are engaged primarily in conservation. Western intelligence agencies are known to have used non-government aid organizations (NGOs) as cover for clandestine operations. Does this happen in conservation? In one example, a previous US President expressed concern that ivory trafficking represented a national security threat to the USA, following a report claiming that ivory trafficking was funding terrorist networks in Africa. Coincident with this new reason for concern regarding elephant poaching, a US-based conservation NGO employed staff from US military intelligence to develop and run an intelligence fusion center with the Kenya Wildlife Service. After a few years, the head of the operation left the NGO and returned directly to her career in military intelligence. Without access to classified information, it is impossible to determine if this was coincidence. Analytical tools, including some developed by the intelligence community, could be used to better assess whether some conservation programs are cover for clandestine operations. In the meantime, conservation professionals need to consider the possibility that there could be serving officers of intelligence agencies inside conservation NGOs. In order to ensure the security of conservation workers and the acceptance of conservation programs worldwide, all national governments should offer unequivocal guarantees that conservation NGOs are not being used for covert intelligence operations.

An understanding of the pathogenesis and pathophysiology of Lyme disease is key to the ultimate care of patients with Lyme disease. To better understand the various mechanisms underlying the infection caused by Borrelia burgdorferi, the Pathogenesis and Pathophysiology of Lyme Disease Subcommittee was formed to review what is currently known about the pathogenesis and pathophysiology of Lyme disease, from its inception, but also especially about its ability to persist in the host. To that end, the authors of this report were assembled to update our knowledge about the infectious process, identify the gaps that exist in our understanding of the process, and provide recommendations as to how to best approach solutions that could lead to a better means to manage patients with persistent Lyme disease.

Abstract A precise tug-of-war between regulatory T (Treg) cells and IL-17-producing (Th17) CD4 T cells ensures appropriate reactivity to pathogenic challenge. While an imbalance favoring Treg activity leads to suboptimal responses, overactive Th17 activity promotes autoimmunity. Both Th17 and Treg cells represent a significant proportion of the tumor infiltrating lymphocytes (TILs) in melanoma patients. In this disease context, Tregs suppress effector cells via numerous mechanisms. Productive immune responses are believed to result from passive escape from Treg suppression. We report an active role for Th17 cells in dampening Tregs to promote CD8 effector T cell activity. Using a melanoma mouse model, we found that elimination of IL-17-producing cells prevents vaccine-induced anti-melanoma immunity. Using RNA-Seq analysis, we identified a gene expression (GE) signature that implicates the IL-21/IL-21R axis in the ability of Th17 cells to inhibit Tregs and to induce a cytolytic GE signature in CD8 T cells. Similarly compromised vaccine-induced anti-melanoma responses in both IL-21R-deficient and Th17 diminished mice further support a critical role for Th17 cells and IL-21. Ectopic expression of IL-21 rescued compromised anti-tumor responses in Th17 diminished mice, suggesting that Th17-specific production of IL-21 induces effective CD8-mediated anti-tumor immunity. Single-cell RNA-seq analysis elucidated dynamic changes in both the identity and phenotype of diverse TILs populations in response to Th17 cells and IL-21 expression. Together, these data suggest that Th17-specific IL-21 production impedes Treg suppression, resulting in increased CD8 T cell effector function, and changes in TILs populations.

Sex, age, and wet-bulb globe temperature (WBGT) have been proposed risk factors for exertional heat stroke (EHS) despite conflicting laboratory and epidemiologic evidence. To examine differences in EHS incidence while accounting for sex, age, and environmental conditions. Observational study. Falmouth Road Race, a warm-weather 7-mi (11.26-km) running road race. We reviewed records from patients treated for EHS at medical tents. The relative risk (RR) of EHS between sexes and across ages was assessed with males as the reference population. Multivariate linear regression analyses were calculated to determine the relative contribution of sex, age, and WBGT to the incidence of EHS. Among 343 EHS cases, the female risk of EHS was lower overall (RR = 0.71; 95% confidence interval [CI] = 0.58, 0.89; P = .002) and for age groups 40 to 49 years (RR = 0.43; 95% CI = 0.24, 0.77; P = .005) and 50 to 59 years (RR = 0.31; 95% CI = 0.13, 0.72; P = .005). The incidence of EHS did not differ between sexes in relation to WBGT (P > .05). When sex, age, and WBGT were considered in combination, only age groups <14 years (β = 2.41, P = .008), 15 to 18 years (β = 3.83, P < .001), and 19 to 39 years (β = 2.24, P = .014) significantly accounted for the variance in the incidence of EHS (R2 = .10, P = .006). In this unique investigation of EHS incidence in a road race, we found a 29% decreased EHS risk in females compared with males. However, when sex was considered with age and WBGT, only younger age accounted for an increased incidence of EHS. These results suggest that road race medical organizers should consider participant demographics when organizing the personnel and resources needed to treat patients with EHS. Specifically, organizers of events with greater numbers of young runners (aged 19 to 39 years) and males should prioritize ensuring that medical personnel are adequately prepared to handle patients with EHS.