Immune responses during an antarctic summer

Hk, Müller; Dj, Lugg; Ursin, Holger; Quinn, Daniel G.; Donovan, Kevin

doi:10.1080/00313029500169852

Cited by 27 publications

(4 citation statements)

References 4 publications

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“…Salivary cortisol was evaluated as a measure of physiological stress. Previous studies had suggested that serum cortisol levels decreased during the summer expedition in Antarctica (Lugg et al 1995).…”

Section: Discussionmentioning

confidence: 94%

Impact of the harsh Antarctic environment on mucosal immunity

et al. 2021

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Mucosal immunity of Indian Antarctic personnel was analysed during the 34th Indian Scientific Expedition to Antarctica (ISEA) by ship voyage. Serum and salivary IgA, IgA1 and IgA2 levels along with salivary cortisol and TGF-β were quantified by enzyme-linked immunosorbent assay. Samples were collected at three different time points (T1, T2 and T3) during the expedition. Serum and salivary IgA, IgA1 and IgA2 concentrations incrementally increased towards the end of the expedition as compared to the beginning of the expedition. Salivary IgA and TGF-β levels were significantly altered during the expedition. Levels of IgA1 (P = 0.0007) and IgA2 (P = 0.0135) increased significantly at T3 as compared to T1. Additionally, significant changes in serum IgA were observed, with peak levels at T3 (P = 0.0015) and T2 (P < 0.001). However, the level of serum IgA2 was also significantly altered at T3 (P < 0.05) and T2 (P = 0.0006) in comparison with T1. The exact cause of the changes in serum and salivary IgA, IgA1, IgA2 and TGF-β levels during the summer expedition are unknown; however, the changes are evident in mucosal immunity.

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Section: Discussionmentioning

confidence: 94%

Impact of the harsh Antarctic environment on mucosal immunity

et al. 2021

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“…For instance, submariners working in shifts undergo prolonged sleep disruptions and dietary restrictions that are associated with circadian rhythm disturbances and subsequent immune responses, contributing to notable elevations in serum immune markers, including IL‐2R, IL‐1, intracellular toxins, and TNF‐α, and the decline of immune effector cells (Myznikov et al., 2003). Immunological studies in polar environments have shown that cell‐mediated immune responses are reduced, T cell function is impaired, and cytokine production is altered (Muller et al., 1995).…”

Section: Microalgal Health Benefits In Iacesmentioning

confidence: 99%

The potential use of microalgae for nutrient supply and health enhancement in isolated and confined environments

Zhang,

Yang,

Sun

et al. 2024

Comp Rev Food Sci Food Safe

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Exploring isolated and confined environments (IACEs), such as deep‐sea ecosystems, polar regions, and outer space, presents multiple challenges. Among these challenges, ensuring sustainable food supply over long timescales and maintaining the health of personnel are fundamental issues that must be addressed. Microalgae, as a novel food resource, possess favorable physiological and nutritional characteristics, demonstrating potential as nutritional support in IACEs. In this review, we discuss the potential of microalgae as a nutritional supplement in IACEs from four perspectives. The first section provides a theoretical foundation by reviewing the environmental adaptability and previous studies in IACEs. Subsequently, the typical nutritional components of microalgae and their bioavailability are comprehensively elucidated. And then focus on the impact of these ingredients on health enhancement and elucidate its mechanisms in IACEs. Combining the outstanding stress resistance, rich active ingredients, the potential to alleviate osteoporosis, regulate metabolism, and promote mental well‐being, microalgae demonstrate significant value for food applications. Furthermore, the development of novel microalgae biomatrices enhances health safeguards. Nevertheless, the widespread application of microalgae in IACEs still requires extensive studies and more fundamental data, necessitating further exploration into improving bioavailability, high biomass cultivation methods, and enhancing palatability.

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“…Antarctica is a continent with the most extreme climate (Turner et al 2009, Muller et al 1995b). The continent is inhabited only by temporary residents mostly constisting of scientists and support personnel.…”

Section: Introductionmentioning

confidence: 99%

“…Further immunological research in Antarctica was focused on reactivation of latent viral infections during periods of longterm isolation. In most of the studies, increased frequency of herpesviral and Ep-stein-Barr viral infections have been observed after long-term residency in Antartica (Muller et al 1995b, Tingate et al 1997.…”

Section: Introductionmentioning

confidence: 99%

Changes in immunological characteristics of summer crew during a short term expedition to Antarctica

Žákovská

2023

Czech Polar Rep.

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The aim of this study was to examine the effect of extreme climatic conditions and isolation on levels of pre-selected immunological parameters in humans. This article describes changes in immunological parameters measured in members of the 9th Czech Antarctic Scientific Expedition during their field work in Antarctica in summer time. The total of 15 sera samples were collected in the morning shortly before the expedition, the second collection was proved in the middle and the third in the end of stay at the Czech Polar station (Mendel station). The statistically significant difference appeared in eight of 11 parameters, from which the value of C3, C4, IgA, and number of monocytes decreased; level of IgG and number of non segmented neutrophils increased. The difference was showed also in the middle of stay, when the level of IgM, number of neutrophils and lymphocytes in the first part of stay decreased, in the second increased. The way of life in the station, physical performance and extreme climatic condition, probably positively affected the results of some studied immunological parameters.

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Immune responses during an antarctic summer

Cited by 27 publications

References 4 publications

Impact of the harsh Antarctic environment on mucosal immunity

Impact of the harsh Antarctic environment on mucosal immunity

The potential use of microalgae for nutrient supply and health enhancement in isolated and confined environments

Changes in immunological characteristics of summer crew during a short term expedition to Antarctica

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