A randomized clinical trial: Efficacy of group-based acceptance and commitment therapy program for breast cancer patients with high fear of progression.

BACKGROUND: Fear of progression (FOP) is a common and significant concern among cancer patients, encompassing worries about cancer progression during active treatment. Elevated levels of FOP can be dysfunctional. This study aims to assess the efficacy of an Acceptance and Commitment Therapy (ACT)-based intervention on FOP, anxiety sensitivity (AS), and quality of life (QOL) in breast cancer patients. METHODS: A clinical trial was conducted involving 80 stage I-III active-treatment breast cancer patients with a score greater than 34 on the Fear of Progression Questionnaire-Short Form scale. These patients were randomly assigned in a 1:1 ratio to either an intervention group, which received weekly 70-min sessions of 5-ACT-bsed group-therapy, or a control group that received usual treatment. Variables including FOP, AS, QOL, and ACT-related factors were assessed using ASQ, QLQ-C30, Cognitive Fusion Questionnaire, and Acceptance and Action Questionnaire-II at three time points: baseline, post-intervention, and 3-month follow-up. The efficacy of the intervention was evaluated using mixed model analysis across all time-points. RESULTS: The fidelity and acceptability of the ACT-based manual were confirmed using significant methods. A significant reduction in FOP was observed only in the ACT group at post-intervention (P-valueACT < 0.001; Cohen dACT = 1.099). Furthermore, the ACT group demonstrated a more significant reduction in FOP at follow-up. Furthermore, all secondary and ACT-related variables, except for the physical symptoms subscale, showed significant improvement in the ACT group compared to the control group. CONCLUSIONS: Our ACT-based manual showed promise for reducing FOP, AS, and improving QOL, and ACT-related variables in breast cancer patients 3 months following the intervention.

Family adjustment and resilience after a parental cancer diagnosis.

PURPOSE: To explore the resources, parents with cancer and their partners draw upon to sustain their family resilience through the cancer experience. METHODS: Fifteen participants who were parents of children aged 8 to 25 years completed phone, audio-recorded, and semi-structured interviews. Of these participants, 11 were parents diagnosed with cancer, and four were partners of a parent diagnosed with cancer. Interview questions aimed to increase understanding about how families communicate, connect, and face challenges from the cancer experience. Interview data was analysed using inductive thematic analysis to provide scope to generate themes from parent's experiences rather than to test pre-existing frameworks. RESULTS: The thematic analysis of interview transcripts generated three key themes related to family resilience: (1) adaptability to changes in roles and routines, (2) open communication within the family, and (3) accepting support from others. CONCLUSION: This study found that parents' ability to use personal resources when faced with significant challenges helped to improve the resilience of parents' family system. Further research is needed to understand the factors that influence family resilience when a parent is diagnosed with cancer. Implications for the development of targeted interventions that provide support to not only the patient, but their whole family system will be discussed.

The exocyst complex is required for the trafficking and delivery of KCa3.1 to the basolateral membrane of polarized epithelia.

Control of the movement of ions and water across epithelia is essential for homeostasis. Changing the number or activity of ion channels at the plasma membrane is a significant regulator of epithelial transport. In polarized epithelia, the intermediate-conductance calcium-activated potassium channel, KCa3.1 is delivered to the basolateral membrane where it generates and maintains the electrochemical gradients required for epithelial transport. The mechanisms that control the delivery of KCa3.1 to the basolateral membrane are still emerging. Herein, we investigated the role of the highly conserved tethering complex exocyst. In epithelia, exocyst is involved in the tethering of post-Golgi secretory vesicles with the basolateral membrane, which is required before membrane fusion. In our Fisher rat thyroid cell line that stably expresses KCa3.1, siRNA knockdown of either of the exocyst subunits Sec3, Sec6, or Sec8 significantly decreased KCa3.1-specific current. In addition, knockdown of exocyst complex subunits significantly reduced the basolateral membrane protein level of KCa3.1. Finally, co-immunoprecipitation experiments suggest associations between Sec6 and KCa3.1, but not between Sec8 and KCa3.1. Collectively, based on these data and our previous studies, we suggest that components of exocyst complex are crucially important in the tethering of KCa3.1 to the basolateral membrane. After which, Soluble N-ethylmaleimide-sensitive factor (SNF) Attachment Receptors (SNARE) proteins aid in the insertion of KCa3.1-containing vesicles into the basolateral membrane of polarized epithelia.NEW & NOTEWORTHY Our Ussing chamber and immunoblot experiments demonstrate that when subunits of the exocyst complex were transiently knocked down, this significantly reduced the basolateral population and functional expression of KCa3.1. These data suggest, combined with our protein association experiments, that the exocyst complex regulates the tethering of KCa3.1-containing vesicles to the basolateral membrane prior to the SNARE-dependent insertion of channels into the basolateral membrane of epithelial cells.

Psychological, functional and social outcomes in adolescent and young adult cancer survivors over time: A systematic review of longitudinal studies.

OBJECTIVE: Most adolescents and young adults (AYA) can expect to survive a cancer diagnosis and treatment, but all will be left with the potential of long-term negative effects that can impact their ability to reach their full potential in life. Understanding aspects of psychological, functional, and social health and well-being outcomes, is pivotal for optimising long-term well-being. METHODS: We completed a systematic review of longitudinal studies reporting outcomes after anti-cancer treatment for Adolescents and Young Adults diagnosed between the age of 12-29 years according to established systematic review processes. The protocol was registered with PROSPERO (ID: CRD 42020203116). RESULTS: Thirteen reports from 10 studies met eligibility criteria representing 17,645 individuals (50.3% female, mean age at diagnosis 22 years, and 26 years at last, follow up). Eleven reports were from eight quantitative studies that relied on self-report surveys and two were qualitative studies. Psychological outcomes were reported to improve over time, as were functional health outcomes, although reported health behaviours were inconsistent between studies. Neurocognitive deficits were reported to affect the ability to return to work and impacts on fertility and sexuality were sustained over time. CONCLUSIONS: While some outcomes for AYA are reported to improve over time, particularly for physical functioning, and anxiety and depression, the long-term impact of cancer on many important domains remains largely unknown. Specifically, the evidence to understand what changes occur over time, and when, remains underdeveloped.

Illness unpredictability and psychosocial adjustment of adolescent and young adults impacted by parental cancer: the mediating role of unmet needs.

PURPOSE: Given the large number of adolescents and young adults (AYAs) impacted by parental cancer and the potential for negative psychosocial outcomes in this vulnerable population, this study examined the mediating role of offspring unmet needs with regard to parental cancer and the relation between AYAs psychosocial adjustment and perceived illness unpredictability. METHODS: A total of 113 AYAs (aged 11-24 years) living with a parent diagnosed with cancer completed a questionnaire assessing illness unpredictability, offspring unmet needs, and psychosocial adjustment (i.e., health-related quality of life and internalizing problems). RESULTS: Higher offspring unmet needs were associated with lower health-related quality of life (r = -0.24**) and higher internalizing problems (r = 0.21*). Offspring unmet needs mediated the relation between illness unpredictability and health-related quality of life (standardized indirect effect = -0.100* [-0.183, -0.018]) but not internalizing problems (standardized indirect effect = 0.067 [-0.015, 0.148]). In particular, higher illness unpredictability was related to higher unmet needs (ß = 0.351**) which, in turn, predicted lower health-related quality of life (ß = -0.286**). CONCLUSION: These findings identify offspring unmet needs and illness unpredictability as implicated in AYAs positive psychosocial adjustment to parental cancer. Given that AYAs are at greater risk of elevated psychosocial difficulties, interventions should target offspring unmet needs and perception of illness unpredictability to mitigate the adverse effects of parental cancer.

Using consumer engagement strategies to improve healthcare safety for young people: An exploration of the relevance and suitability of current approaches.

BACKGROUND: Consumer engagement in health care is recognized as a critical strategy to minimize healthcare-associated harms, however, little research has focussed on strategies to engage young people in healthcare safety. This study explores the suitability of commonly used engagement strategies, such as brochures, interactive bedside charts or apps, for young people (14-25 years) to improve their healthcare safety, with a focus on cancer care. METHODS: Four qualitative online workshops were conducted (N = 19). Two workshops included young people who had experienced cancer (n = 6) and two workshops included staff who support young people who had experienced a diagnosis of cancer (n = 12). Evidence from a systematic review was used to develop case studies of existing strategies as a topic guide for the online workshops. Data were analysed using a framework method and template analysis approach. RESULTS: Thematic analysis against the analytic framework led to the development of four principles for engagement with young people: empowerment, transparency, participatory culture and flexibility. The transition from being 'looked after' to young people being responsible for their own care was an integrative theme which intersected all elements of the framework. CONCLUSION: For service providers to engage with young people about safety issues in cancer services, the strategies employed need to be tailored to consider the transitional nature of being an adolescent or young adult. A systemic approach that incorporates flexible, tailored engagement strategies, education and empowerment of young people and healthcare providers is required to engage effectively with young people about safety in healthcare. These findings may have implications beyond cancer care. PATIENT OR PUBLIC CONTRIBUTION: Workshop content was developed with and by the CanEngage team, including the Consumer Advisory Group, who reviewed content and inform wider project priorities.

Explosion in the complexity of membrane protein recycling.

For decades, recycling of membrane proteins has been represented in figures by arrows between the "endosome" and the plasma membrane, but recently there has been an explosion in the understanding of the mechanisms and protein complexes required to facilitate protein recycling. Here, some key discoveries will be introduced, including assigning function to a number of recently recognized protein complexes and linking their function to protein recycling. Furthermore, the importance of lipid interactions and links to diseases and epithelial polarity will be summarized.

Navigating Diagnostic and Treatment Decisions in Non-Small Cell Lung Cancer: Expert Commentary on the Multidisciplinary Team Approach.

Non-small cell lung cancer (NSCLC) accounts for approximately one in five cancer-related deaths, and management requires increasingly complex decision making by health care professionals. Many centers have therefore adopted a multidisciplinary approach to patient care, using the expertise of various specialists to provide the best evidence-based, personalized treatment. However, increasingly complex disease staging, as well as expanded biomarker testing and multimodality management algorithms with novel therapeutics, have driven the need for multifaceted, collaborative decision making to optimally guide the overall treatment process. To keep up with the rapidly evolving treatment landscape, national-level guidelines have been introduced to standardize patient pathways and ensure prompt diagnosis and treatment. Such strategies depend on efficient and effective communication between relevant multidisciplinary team members and have both improved adherence to treatment guidelines and extended patient survival. This article highlights the value of a multidisciplinary approach to diagnosis and staging, treatment decision making, and adverse event management in NSCLC. IMPLICATIONS FOR PRACTICE: This review highlights the value of a multidisciplinary approach to the diagnosis and staging of non-small cell lung cancer (NSCLC) and makes practical suggestions as to how multidisciplinary teams (MDTs) can be best deployed at individual stages of the disease to improve patient outcomes and effectively manage common adverse events. The authors discuss how a collaborative approach, appropriately leveraging the diverse expertise of NSCLC MDT members (including specialist radiation and medical oncologists, chest physicians, pathologists, pulmonologists, surgeons, and nursing staff) can continue to ensure optimal per-patient decision making as treatment options become ever more specialized in the era of biomarker-driven therapeutic strategies.

The δ subunit of epithelial sodium channel in humans-a potential player in vascular physiology.

Vascular epithelial sodium channels (ENaCs) made up of canonical α, ß, and γ subunits have attracted more attention recently owing to their physiological role in vascular health and disease. A fourth subunit, δ-ENaC, is expressed in various mammalian species, except mice and rats, which are common animal models for cardiovascular research. Accordingly, δ-ENaC is the least understood subunit. However, the recent discovery of δ subunit in human vascular cells indicates that this subunit may play a significant role in normal/pathological vascular physiology in humans. Channels containing the δ subunit have different biophysical and pharmacological properties compared with channels containing the α subunit, with the potential to alter the vascular function of ENaC in health and disease. Hence, it is important to investigate the expression and function of δ-ENaC in the vasculature to identify whether δ-ENaC is a potential new drug target for the treatment of cardiovascular disease. In this review, we will focus on the existing knowledge of δ-ENaC and implications for vascular physiology and pathophysiology in humans.

The epithelial sodium channel has a role in breast cancer cell proliferation.

PURPOSE: Breast cancer is the most common cancer affecting women worldwide with half a million associated deaths annually. Despite a huge global effort, the pathways of breast cancer progression are not fully elucidated. Ion channels have recently emerged as novel regulators of cancer cell proliferation and metastasis. The epithelial sodium channel, ENaC, made up of α, ß and γ subunits is well known for its role in Na+ reabsorption in epithelia, but a number of novel roles for ENaC have been described, including potential roles in cancer. A role for ENaC in breast cancer, however, has yet to be described. Therefore, the effects of ENaC level and activity on breast cancer proliferation were investigated. METHODS: Through the publicly available SCAN-B dataset associations between αENaC mRNA expression and breast cancer subtypes, proliferation markers and epithelial-mesenchymal transition markers (EMT) were assessed. αENaC expression, through overexpression or siRNA-mediated knockdown, and activity, through the ENaC-specific inhibitor amiloride, were altered in MCF7, T47D, BT549, and MDAMB231 breast cancer cells. MTT and EdU cell proliferation assays were used to determine the effect of these manipulations on breast cancer cell proliferation. RESULTS: High αENaC mRNA expression was associated with less aggressive and less proliferative breast cancer subtypes and with reduced expression of proliferation markers. Decreased αENaC expression or activity, in the mesenchymal breast cancer cell lines BT549 and MDAMB231, increased breast cancer cell proliferation. Conversely, increased αENaC expression decreased breast cancer cell proliferation. CONCLUSION: αENaC expression is associated with a poor prognosis in breast cancer and is a novel regulator of breast cancer cell proliferation. Taken together, these results identify ENaC as a potential future therapeutic target.

Targeting the Toll-like receptor pathway as a therapeutic strategy for neonatal infection.

Toll-like receptors (TLRs) are crucial transmembrane receptors that form part of the innate immune response. They play a role in the recognition of various microorganisms and their elimination from the host. TLRs have been proposed as vital immunomodulators in the regulation of multiple neonatal stressors that extend beyond infection such as oxidative stress and pain. The immune system is immature at birth and takes some time to become fully established. As such, babies are especially vulnerable to sepsis at this early stage of life. Findings suggest a gestational age-dependent increase in TLR expression. TLRs engage with accessory and adaptor proteins to facilitate recognition of pathogens and their activation of the receptor. TLRs are generally upregulated during infection and promote the transcription and release of proinflammatory cytokines. Several studies report that TLRs are epigenetically modulated by chromatin changes and promoter methylation upon bacterial infection that have long-term influences on immune responses. TLR activation is reported to modulate cardiorespiratory responses during infection and may play a key role in driving homeostatic instability observed during sepsis. Although complex, TLR signaling and downstream pathways are potential therapeutic targets in the treatment of neonatal diseases. By reviewing the expression and function of key Toll-like receptors, we aim to provide an important framework to understand the functional role of these receptors in response to stress and infection in premature infants.

Screening for distress and needs: Findings from a multinational validation of the Adolescent and Young Adult Psycho-Oncology Screening Tool with newly diagnosed patients.

OBJECTIVE: Adolescents and young adults (AYAs) diagnosed with cancer commonly experience elevated psychological distress and need appropriate detection and management of the psychosocial impact of their illness and treatment. This paper describes the multinational validation of the Distress Thermometer (DT) for AYAs recently diagnosed with cancer and the relationship between distress and patient concerns on the AYA-Needs Assessment (AYA-NA). METHODS: AYA patients (N = 288; 15-29 years, Mage  = 21.5 years, SDage  = 3.8) from Australia (n = 111), Canada (n = 67), the UK (n = 85) and the USA (n = 25) completed the DT, AYA-NA, Hospital Anxiety Depression Scale (HADS) and demographic measures within 3 months of diagnosis. Using the HADS as a criterion, receiver operating characteristics analysis was used to determine the optimal cut-off score and meet the acceptable level of 0.70 for sensitivity and specificity. Correlations between the DT and HADS scores, prevalence of distress and AYA-NA scores were reported. RESULTS: The DT correlated strongly with the HADS-Total, providing construct validity evidence (r = 0.65, p < 0.001). A score of 5 resulted in the best clinical screening cut-off on the DT (sensitivity = 82%, specificity = 75%, Youden Index = 0.57). Forty-two percent of AYAs scored at or above 5. 'Loss of meaning or purpose' was the AYA-NA item most likely to differentiate distressed AYAs. CONCLUSIONS: The DT is a valid distress screening instrument for AYAs with cancer. The AYA-POST (DT and AYA-NA) provides clinicians with a critical tool to assess the psychosocial well-being of this group, allowing for the provision of personalised support and care responsive to individuals' specific needs and concerns.

Development and evaluation of the Good Grief program for young people bereaved by familial cancer.

BACKGROUND: Adolescents and young adults (AYAs) bereaved by the death of a parent or sibling from cancer report unique psychosocial needs and can have difficulty adjusting to their loss. Unaddressed, this can result in poor long-term bereavement outcomes. This paper describes the development and evaluation of Good Grief - a 3-day camp-based program focused on meeting coping, social support, and respite needs of AYAs bereaved by familial cancer. METHODS: One hundred and nine Australian AYAs (68% female; age: 12-25 years, M = 16.63) participated in the evaluation. Grief intensity (Texas Revised Inventory of Grief), meaning-making (Grief and Meaning Reconstruction Inventory), trauma coping (Perceived Ability to Cope with Trauma Scale) and unmet needs (Bereaved Cancer Needs Instrument) measures were administered pre-program and 3-months post-program. Acceptability was measured after each session and at the program's conclusion. Appropriateness was measured at 3-month follow-up. Thirteen participants were interviewed three months post-program on their perceptions of the program. RESULTS: Participants reported high program satisfaction, engagement with psychosocial sessions, and enjoyment of recreational activities. Significant improvements were observed in trauma coping abilities and reductions in unmet needs for managing emotions, social support, respite, future planning, and accessing information and support domains. No change was evident in grief intensity or meaning-making as measured quantitatively. Interviews supported these quantitative findings but also identified evidence of personal growth, a component of meaning-making. CONCLUSIONS: Good Grief is a highly acceptable and beneficial intervention that addresses the unique needs of AYAs bereaved by familial cancer.

Development and piloting of 'When Cancer Comes Along': A cancer awareness program for Australian secondary school students.

ISSUE ADDRESSED: Given the increasing prevalence of cancer, there is a growing need for health interventions educating individuals about the disease and its impacts, risk-reduction strategies and how to support others who are affected. School-based programs are a promising medium addressing these issues in adolescents, yet no comprehensive cancer education program exists in Australia. This paper reports on the piloting of a cancer awareness program for Australian students. METHODS: When Cancer Comes Along is a 90-minute interactive presentation covering cancer's impacts, risk-reduction strategies and how to support those affected. The program was piloted in four Australian secondary schools, with students (N = 113, 13-16 years) and teachers (N = 2) providing feedback via postprogram survey. RESULTS: Participants reported high satisfaction overall (92%-97%) and with each program component (71%-95%), and agreed that the program achieved learning outcomes (72%-95%). CONCLUSIONS: Results indicate that When Cancer Comes Along is relevant, engaging and age-appropriate. Participants reported improved understanding of cancer, its impacts, risk-reduction strategies and how to support those affected. A larger-scale evaluation is underway to more comprehensively evaluate program outcomes. SO WHAT?: The program has potential in educating students about various aspects of the cancer experience. It further demonstrates the feasibility and value of addressing psychosocial impacts and support strategies as well as information about cancer risks, elements which have not previously been combined in educational interventions. Equipping adolescents with the knowledge and skills to reduce their cancer risk and support others who are affected has significant health promotion implications for cancer prevention and support provision.

Guiding Genomic Research: Australia's National Statement on Ethical Conduct in Human Research.

With advances in genomic research playing an important role in the development of clinical applications, it is important that ethical guidance for researchers is contemporary and relevant. In this article we analyse the relevant provisions in Australia's National Statement on Ethical Conduct in Human Research (revised in 2018) and consider the guidance it provides for contemporary genomics research. We analyse four key areas: genomic information; biobanking and use of human tissue; consent to participation in genomic research, including specific issues related to participation by children; and return of findings. We conclude that Australia's National Statement is well-placed to provide guidance to Australian researchers on issues relating to genomics, although there is scope for additional guidance on some issues related to consent.

Membrane trafficking pathways regulating the epithelial Na+ channel.

Renal Na+ reabsorption, facilitated by the epithelial Na+ channel (ENaC), is subject to multiple forms of control to ensure optimal body blood volume and pressure through altering both the ENaC population and activity at the cell surface. Here, the focus is on regulating the number of ENaCs present in the apical membrane domain through pathways of ENaC synthesis and targeting to the apical membrane as well as ENaC removal, recycling, and degradation. Finally, the mechanisms by which ENaC trafficking pathways are regulated are summarized.

Retromer is involved in epithelial Na+ channel trafficking.

The epithelial Na+ channel (ENaC) located at the apical membrane in many epithelia is the rate-limiting step for Na+ reabsorption. Tight regulation of the plasma membrane population of ENaC is required, as hypertension or hypotension may result if too many or too few ENaCs are present. Endocytosed ENaC travels to the early endosome and is then either trafficked to the lysosome for degradation or recycled back to the plasma membrane. Recently, the retromer recycling complex, located at the early endosome, has been implicated in plasma membrane protein recycling pathways. We hypothesized that the retromer is required for recycling of ENaC. Stabilization of retromer function with the retromer stabilizing chaperone R55 increased ENaC current, whereas knockdown or overexpression of individual retromer and associated proteins altered ENaC current and cell surface population of ENaC. KIBRA was identified as an ENaC-binding protein allowing ENaC to link to sorting nexin 4 to alter ENaC trafficking. Knockdown of the retromer-associated cargo-binding sorting nexin 27 protein did not alter ENaC current, whereas CCDC22, a CCC-complex protein, coimmunoprecipitated with ENaC, and CCDC22 knockdown decreased ENaC current and population at the cell surface. Together, our results confirm that retromer and the CCC complex play a role in recycling of ENaC to the plasma membrane.

Beyond chemoradiotherapy: improving treatment outcomes for patients with stage III unresectable non-small-cell lung cancer through immuno-oncology and durvalumab (Imfinzi®â–¼, AstraZeneca UK Limited).

The treatment paradigm of non-small-cell lung cancer (NSCLC) has rapidly changed in recent years following the introduction of immune-checkpoint inhibition (ICI). Pre-clinically, both chemotherapy and radiotherapy modulate the tumour microenvironment, providing the rationale for clinical trials evaluating their role in combination with immunotherapy. Standard-of-care treatment for patients with unresectable stage III disease is concurrent chemoradiotherapy (cCRT); however, only recently, the combination with ICI has been explored. The Phase 3 PACIFIC study randomised 713 patients with confirmed locally advanced, unresectable, stage III NSCLC, whose disease has not progressed following cCRT, to either the anti-programmed death-ligand 1 (PD-L1) agent durvalumab (Imfinzi®â–¼, AstraZeneca UK Limited) or placebo. Patients with a PD-L1 status ≥1% treated with durvalumab had a significantly longer median progression-free survival compared with placebo (17.2 vs. 5.6 months, respectively; HR: 0.51; 95% CI: 0.41-0.63), prolonged median overall survival (OS) (NR vs. 28.7 months, respectively; HR: 0.68; 99.73% CI: 0.47-0.997; P = 0.0025) and long-term clinical benefit (3-year OS HR: 0.69; 95% CI: 0.55-0.86). Grade 3 or 4 toxicity was marginally greater in the durvalumab cohort versus placebo (30.5% vs. 26.1%). Based on these results, durvalumab has been licensed in this setting, and further clinical trials are exploring the use of ICI in unresectable stage III NSCLC.

The impact of preterm adversity on cardiorespiratory function.

NEW FINDINGS: What is the topic of this review? We review the influence of prematurity on the cardiorespiratory system and examine the common sequel of alterations in oxygen tension, and immune activation in preterm infants. What advances does it highlight? The review highlights neonatal animal models of intermittent hypoxia, hyperoxia and infection that contribute to our understanding of the effect of stress on neurodevelopment and cardiorespiratory homeostasis. We also focus on some of the important physiological pathways that have a modulatory role on the cardiorespiratory system in early life. ABSTRACT: Preterm birth is one of the leading causes of neonatal mortality. Babies that survive early-life stress associated with immaturity have significant prevailing short- and long-term morbidities. Oxygen dysregulation in the first few days and weeks after birth is a primary concern as the cardiorespiratory system slowly adjusts to extrauterine life. Infants exposed to rapid alterations in oxygen tension, including exposures to hypoxia and hyperoxia, have altered redox balance and active immune signalling, leading to altered stress responses that impinge on neurodevelopment and cardiorespiratory homeostasis. In this review, we explore the clinical challenges posed by preterm birth, followed by an examination of the literature on animal models of oxygen dysregulation and immune activation in the context of early-life stress.