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High-G (+GZ) exposure is known to induce significant gastrointestinal injury in aviators, yet the underlying mechanisms remain unclear. Ferroptosis is a form of iron-dependent cell death that has been implicated in various pathological conditions, while autophagy plays a critical role in cellular homeostasis and damage regulation. This study investigated the role of autophagy in +Gz-induced intestinal mucosal injury and its interaction with ferroptosis. Sixty female Sprague–Dawley rats were randomly assigned to six groups: control (sham exposure), autophagy inhibition (3-methyladenine, 3-MA), autophagy activation (rapamycin, RAP), +Gz exposure, +Gz exposure with autophagy inhibition, and +Gz exposure with autophagy activation. +Gz exposure was simulated using a small animal centrifuge (+ 10 Gz, 5 min/day for 5 days). Histopathological changes were assessed via haematoxylin–eosin (HE) staining, transmission electron microscopy (TEM), and Chiu scoring. Ferroptosis- and autophagy-related markers (FTH1, NCOA4, GPX4, Nrf2, LC3, and BECN1) were analyzed by Western blotting, quantitative reverse transcription polymerase chain reaction (qRT-PCR), and immunohistochemistry. Levels of Fe 2+ lipid peroxidation (LPO), inflammatory cytokines (tumor necrosis factor-α (TNF- ) and interleukin 6 (IL-6)), and intestinal permeability markers (D-lactate, DAO) were quantified using enzyme-linked immunosorbent assay (ELISA). +Gz exposure led to severe intestinal injury, characterized by villous atrophy, increased Chiu scores, inflammatory infiltration, and mitochondrial structural damage. Ferroptosis was identified as a key pathological mechanism, with elevated Fe 2+ level, lipid peroxidation, and downregulation of GPX4 and Nrf2. Autophagy inhibition significantly alleviated intestinal damage, reducing Fe 2+ accumulation, ferroptosis markers, and oxidative stress, while restoring Nrf2-GPX4 signaling pathway. Conversely, autophagy activation exacerbated ferroptosis, leading to more severe mitochondrial damage and intestinal dysfunction. This study provided novel evidence that +Gz-induced intestinal injury could be mediated by ferroptosis and regulated by autophagy. Excessive autophagy exacerbates ferroptosis via ferritinophagy-mediated iron release, whereas autophagy inhibition is protective against intestinal damage by preserving the Nrf2-GPX4 axis function. Targeting autophagy and ferroptosis may provide new therapeutic strategies for mitigating high-G-induced gastrointestinal injury in aerospace medicine.

The possibility of G-induced loss of consciousness (G-LOC) is a key concern when flying modern, high-performance aircraft. Currently, there are no identification methods available based on physiological data. This study aimed to determine whether specific pulse wave changes could be reliably identified using automatic computer algorithms to detect impending G-LOC. The pulse waves of 86 people who experienced G-LOC in a human centrifuge were analysed alongside an age-, gender-, nationality-, training-, and anti-G-equipment-matched control group using computer algorithm methods to analyse possible longer reductions in the G-LOC group. Based on this data, the study showed that centrifuge profiles with a gradual “onset run” using AGSM resulted in longer pulse wave flattening around the G-LOC in the G-LOC group than in the matched control group. However, this could not be verified in human centrifuge runs with active flight profiles and higher onset rates. Unfortunately, this means that the method used here would not currently be applicable in actual flight. In the future, the possibility of creating an identification method could be extended by incorporating additional physiological data.

A major global health burden continues to be borne by the complex and multifaceted disease of cancer. Epigenetic changes, which are essential for the emergence and spread of cancer, have drawn a huge amount of attention recently. The CCCTC-binding factor (CTCF), which takes part in a wide range of cellular processes including genomic imprinting, X chromosome inactivation, 3D chromatin architecture, local modifications of histone, and RNA polymerase II-mediated gene transcription, stands out among the diverse array of epigenetic regulators. CTCF not only functions as an architectural protein but also modulates DNA methylation and histone modifications. Epigenetic regulation of cancer has already been the focus of plenty of studies. Understanding the role of CTCF in the cancer epigenetic landscape may lead to the development of novel targeted therapeutic strategies for cancer. CTCF has already earned its status as a tumor suppressor gene by acting like a homeostatic regulator of genome integrity and function. Moreover, CTCF has a direct effect on many important transcriptional regulators that control the cell cycle, apoptosis, senescence, and differentiation. As we learn more about CTCF-mediated epigenetic modifications and transcriptional regulations, the possibility of utilizing CTCF as a diagnostic marker and therapeutic target for cancer will also increase. Thus, the current review intends to promote personalized and precision-based therapeutics for cancer patients by shedding light on the complex interplay between CTCF and epigenetic processes.

At the head of a small but comparatively isolated community, traversing airspaces with various jurisdictions, the aircraft commander must have a defined legal status relating to rights, powers and duties to cope with all issues in international air navigation.

Currently, three carnivorous bat species, namely Ia io , Nyctalus lasiopterus , and Nyctalus aviator , are known to actively prey on seasonal migratory birds (hereinafter referred to as “avivorous bats”). However, the absence of reference genomes impedes a thorough comprehension of the molecular adaptations of avivorous bat species. Herein, we present the high-quality chromosome-scale reference genome of N. aviator based on PacBio subreads, DNBSEQ short-reads and Hi-C sequencing data. The genome assembly size of N. aviator is 1.77 Gb, with a scaffold N50 of 102 Mb, of which 99.8% assembly was anchored into 21 pseudo-chromosomes. After masking 635.1 Mb repetitive sequences, a total of 19,412 protein-coding genes were identified, of which 99.3% were functionally annotated. The genome assembly and gene prediction reached 96.1% and 96.1% completeness of Benchmarking Universal Single-Copy Orthologs (BUSCO), respectively. This chromosome-level reference genome of N. aviator fills a gap in the existing information on the genomes of carnivorous bats, especially avivorous ones, and will be valuable for mechanism of adaptations to dietary niche expansion in bat species.

More than perhaps any other major filmmaker, Martin Scorsese has grappled with the idea of the American Dream. His movies are full of working-class strivers hoping for a better life, from the titular waitress and aspiring singer of Alice Doesn’t Live Here Anymore to the scrappy Irish immigrants of Gangs of New York. And in films as varied as Casino, The Aviator, and The Wolf of Wall Street, he vividly displays the glamour and power that can come with the fulfillment of that dream, but he also shows how it can turn into a nightmare of violence, corruption, and greed. This book is the first study of Scorsese’s profound ambivalence toward the American Dream, the ways it drives some men and women to aspire to greatness, but leaves others seduced and abandoned. Showing that Scorsese understands the American dream in terms of a tension between provincialism and cosmopolitanism, Jim Cullen offers a new lens through which to view such seemingly atypical Scorsese films as The Age of Innocence, Hugo, and Kundun. Fast-paced, instructive, and resonant, Martin Scorsese and the American Dream illuminates an important dimension of our national life and how a great artist has brought it into focus.

Surgical repair for regurgitant bicuspid aortic valve (BAV) is promising but underutilized due to perceived complexities and lack of long-term data. This study evaluated the efficacy of valve-sparing root remodeling (VSRR) or isolated valve repair combined with calibrated external ring annuloplasty in BAV versus tricuspid aortic valve (TAV) patients. All patients operated on for aortic regurgitation and/or aneurysm at our institution between 2014 and 2022 were included and entered into the Aortic Valve Insufficiency and ascending aorta Aneurysm InternATiOnal Registry (AVIATOR). Patients with successful repair at index surgery (100% in the BAV group, 93% in the TAV group, p = 0.044) were included in a systemic follow-up with echocardiography at regular intervals. Among 132 patients, 58 were in the BAV (44%) and 74 in the TAV group (56%). There were no inter-group differences in preoperative patient characteristics, except BAV patients being significantly younger (47 ± 18 y vs. 60 ± 14 y, p < 0.001) and having narrower aortic roots at the level of sinuses (41 ± 6 mm vs. 46 ± 13 mm, p < 0.001) and sinotubular junctions (39 ± 10 mm vs. 42 ± 11, p = 0.032). No perioperative deaths were recorded. At four years, there was no significant difference in terms of overall survival (96.3% BAV vs. 97.2% TAV, p = 0.373), freedom from valve reintervention (85.2% BAV vs. 93.4% TAV, p = 0.905), and freedom from severe aortic regurgitation (94.1% BAV vs. 82.9% TAV, p = 0.222). Surgical repair of BAV combined with extra-aortic annuloplasty can be performed with low perioperative morbidity and mortality and excellent mid-term results which are comparable to TAV repair.

Objectives: Assessing balance in highly trained individuals, such as military pilots, poses challenges, as deficits may be underestimated when compared to general population norms. To address this, several studies have proposed tailored databases providing reference values for specific populations. This study retrospectively analyzed balance characteristics in active-duty military pilots of the Italian Air Force. Methods: We enrolled 106 subjects split into two groups: 53 military pilots from the Italian Air Force and 53 civilians without flight experience or exposure to specific vestibular stimuli. All participants underwent ENT examinations with audiometric testing to exclude related pathologies, followed by a personal history collection. Subsequently, they completed the EquiTest protocol across six standard conditions. Results: Significant differences were observed between Army Aviators and Non-Aviators. The PREF variable showed the most consistent distinction, with military pilots demonstrating a superior performance (p < 0.01). Additionally, borderline differences were noted in Condition 6 of the equilibrium scores (p = 0.056), and in the Centre of Gravity (COG) analysis along the X-axis for Conditions 1 and 5 (p = 0.090), and for Condition 2 (p = 0.050). These findings suggest enhanced postural control strategies among Army Aviators under conditions of sensory conflict. Conclusions: These findings suggest that normative balance values specific to military pilots should be used when evaluating aviators recovering from balance deficits. Such tailored benchmarks can help determine the need for rehabilitation before returning to duty, ensuring optimal performance under demanding conditions. Further research is necessary to explore the underlying mechanisms responsible for these adaptations and to identify the specific stimuli that contribute to the enhanced balance capabilities observed in this highly trained population.

Executing flight operations demand that military personnel continuously perform tasks that utilize low- and high-order cognitive functions. The autonomic nervous system (ANS) is crucial for regulating the supply of oxygen (O2) to the brain, but it is unclear how sustained cognitive loads of different complexities may affect this regulation. Therefore, in the current study, ANS responses to low and high cognitive loads in hypoxic and normoxic conditions were evaluated. The present analysis used data from a previously conducted, two-factor experimental design. Healthy subjects (n = 24) aged 19 to 45 years and located near Fort Novosel, AL, participated in the parent study. Over two, 2-h trials, subjects were exposed to hypoxic (14.0% O2) and normoxic (21.0% O2) air while simultaneously performing one, 15-min and one, 10-min simulation incorporating low- and high-cognitive aviation-related tasks, respectively. The tests were alternated across five, 27-min epochs; however, only epochs 2 through 4 were used in the analyses. Heart rate (HR), HR variability (HRV), and arterial O2 saturation were continuously measured using the Warfighter MonitorTM (Tiger Tech Solutions, Inc., Miami, FL, USA), a previously validated armband device equipped with electrocardiographic and pulse oximetry capabilities. Analysis of variance (ANOVA) regression models were performed to compare ANS responses between the low- and high-cognitive-load assessments under hypoxic and normoxic conditions. Pairwise comparisons corrected for familywise error were performed using Tukey’s test within and between high and low cognitive loads under each environmental condition. Across epochs 2 through 4, in both the hypoxic condition and the normoxic condition, the high-cognitive-load assessment (MATB-II) elicited heightened ANS activity, reflected by increased HR (+2.4 ± 6.9 bpm) and decreased HRV (−rMSSD: −0.4 ± 2.7 ms and SDNN: −13.6 ± 14.6 ms). Conversely, low cognitive load (ADVT) induced an improvement in ANS activity, with reduced HR (−2.6 ± 6.3 bpm) and increased HRV (rMSSD: +1.8 ± 6.0 ms and SDNN: vs. +0.7 ± 6.3 ms). Similar observations were found for the normoxic condition, albeit to a lower degree. These within-group ANS responses were significantly different between high and low cognitive loads (HR: +5.0 bpm, 95% CI: 2.1, 7.9, p < 0.0001; rMSSD: −2.2 ms, 95% CI: −4.2, −0.2, p = 0.03; SDNN: −14.3 ms, 95% CI: −18.4, −10.1, p < 0.0001) under the hypoxic condition. For normoxia, significant differences in ANS response were only observed for HR (+4.3 bpm, 95% CI: 1.2, 7.4, p = 0.002). Lastly, only high cognitive loads elicited significant differences between hypoxic and normoxic conditions but just for SDNN (−13.3 ms, 95% CI, −17.5, −8.9, p < 0.0001). Our study observations suggest that compared to low cognitive loads, performing high-cognitive-load tasks significantly alters ANS activity, especially under hypoxic conditions. Accounting for this response is critical, as military personnel during flight operations sustain exposure to high cognitive loads of unpredictable duration and frequency. Additionally, this is likely compounded by the increased ANS activity consequent to pre-flight activities and anticipation of combat-related outcomes.