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Frontiers in Physiology

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https://www.readbyqxmd.com/read/28808440/corrigendum-coupling-developmental-physiology-photoperiod-and-temperature-to-model-phenology-and-dynamics-of-an-invasive-heteropteran-halyomorpha-halys
#1
Anne L Nielsen, Shi Chen, Shelby J Fleischer
[This corrects the article on p. 165 in vol. 7, PMID: 27242539.].
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28804464/retinal-vascular-autoregulation-during-phase-iv-of-the-valsalva-maneuver-an-optical-coherence-tomography-angiography-study-in-healthy-chinese-adults
#2
Yuan Zong, Huan Xu, Jian Yu, Chunhui Jiang, Xiangmei Kong, Yi He, Xinghuai Sun
The impairment of retinal vascular autoregulation can be an early manifestation of many systemic and ocular diseases. Therefore, quantifying retinal vascular autoregulation in a non-invasive manner is very important. This study evaluated the effects of a Valsalva maneuver (VM)-induced blood pressure increases on retinal vascular autoregulation. Parafoveal and peripapillary retinal vessel density were measured with optical coherence tomography angiography before (baseline) and 5 s after each subject completed a VM (Phase IV [VM-IV])...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28804463/effect-of-oral-docosahexaenoic-acid-dha-supplementation-on-dha-levels-and-omega-3-index-in-red-blood-cell-membranes-of-breast-cancer-patients
#3
Alessio Molfino, Maria I Amabile, Sara Mazzucco, Gianni Biolo, Alessio Farcomeni, Cesarina Ramaccini, Simonetta Antonaroli, Massimo Monti, Maurizio Muscaritoli
Rationale: Docosahexaenoic acid (DHA) in cell membrane may influence breast cancer (BC) patients' prognosis, affecting tumor cells sensitivity to chemo- and radio-therapy and likely modulating inflammation. The possibility of identifying BC patients presenting with low DHA levels and/or low ability of DHA incorporation into cell membrane might help to treat this condition. Methods: We enrolled BC patients and healthy controls, recording their seafood dietary intake. DHA in form of algal oil was administered for 10 consecutive days (2 g/day)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28804462/heat-acclimation-mediated-cross-tolerance-origins-in-within-life-epigenetics
#4
REVIEW
Michal Horowitz
The primary outcome of heat acclimation is increased thermotolerance, which stems from enhancement of innate cytoprotective pathways. These pathways produce "ON CALL" molecules that can combat stressors to which the body has never been exposed, via cross-tolerance mechanisms (heat acclimation-mediated cross-tolerance-HACT). The foundation of HACT lies in the sharing of generic stress signaling, combined with tissue/organ- specific protective responses. HACT becomes apparent when acclimatory homeostasis is achieved, lasts for several weeks, and has a memory...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28804461/the-effect-of-resistance-exercise-on-inflammatory-and-myogenic-markers-in-patients-with-chronic-kidney-disease
#5
Emma L Watson, Joao L Viana, David Wimbury, Naomi Martin, Neil J Greening, Jonathan Barratt, Alice C Smith
Background: Muscle wasting is a common complication of Chronic Kidney Disease (CKD) and is clinically important given its strong association with morbidity and mortality in many other chronic conditions. Exercise provides physiological benefits for CKD patients, however the molecular response to exercise remains to be fully determined. We investigated the inflammatory and molecular response to resistance exercise before and after training in these patients. Methods: This is a secondary analysis of a randomized trial that investigated the effect of 8 week progressive resistance training on muscle mass and strength compared to non-exercising controls...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28804460/editorial-systems-biology-and-the-challenge-of-deciphering-the-metabolic-mechanisms-underlying-cancer
#6
EDITORIAL
Osbaldo Resendis-Antonio, Christian Diener
No abstract text is available yet for this article.
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798698/%C3%AE-catenin-knockdown-affects-mitochondrial-biogenesis-and-lipid-metabolism-in-breast-cancer-cells
#7
Daniele Vergara, Eleonora Stanca, Flora Guerra, Paola Priore, Antonio Gaballo, Julien Franck, Pasquale Simeone, Marco Trerotola, Stefania De Domenico, Isabelle Fournier, Cecilia Bucci, Michel Salzet, Anna M Giudetti, Michele Maffia
β-catenin plays an important role as regulatory hub in several cellular processes including cell adhesion, metabolism, and epithelial mesenchymal transition. This is mainly achieved by its dual role as structural component of cadherin-based adherens junctions, and as a key nuclear effector of the Wnt pathway. For this dual role, different classes of proteins are differentially regulated via β-catenin dependent mechanisms. Here, we applied a liquid chromatography-mass spectrometry (LC-MS/MS) approach to identify proteins modulated after β-catenin knockdown in the breast cancer cell line MCF-7...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798697/cardiac-autonomic-modulation-and-the-kinetics-of-heart-rate-responses-in-the-on-and-off-transient-during-exercise-in-women-with-metabolic-syndrome
#8
Lucas R B E Silva, Antonio R Zamunér, Paulo Gentil, Fagner M Alves, Acácia G F Leal, Viviane Soares, Maria S Silva, Marcus F Vieira, Karina Simões, Gustavo R Pedrino, Ana C S Rebelo
Objective: To test whether women with metabolic syndrome (MS) have impairments in the on- and off-transients during an incremental test and to study whether any of the MS components are independently associated with the observed responses. Research Design and Methods: Thirty-six women aged 35-55 years were divided into a group with MS (MSG, n = 19) and a control group (CG, n = 17). R-R intervals (RRi) and heart rate variability (HRV) were calculated on a beat-to-beat basis and the heart rate (HR) at the on- and off-transient were analyzed during an incremental cardiopulmonary exercise test (CPET)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798696/phylogenetic-and-molecular-evolutionary-analysis-of-mitophagy-receptors-under-hypoxic-conditions
#9
Xiaomei Wu, Fei-Hua Wu, Qianrong Wu, Shu Zhang, Suping Chen, Matthew Sima
As animals evolved to use oxygen as the main strategy to produce ATP through the process of mitochondrial oxidative phosphorylation, the ability to adapt to fluctuating oxygen concentrations is a crucial component of evolutionary pressure. Three mitophagy receptors, FUNDC1, BNIP3 and NIX, induce the removal of dysfunctional mitochondria (mitophagy) under prolonged hypoxic conditions in mammalian cells, to maintain oxygen homeostasis and prevent cell death. However, the evolutionary origins and structure-function relationships of these receptors remain poorly understood...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798695/neural-organization-of-the-optic-lobe-changes-steadily-from-late-embryonic-stage-to-adulthood-in-cuttlefish-sepia-pharaonis
#10
Yung-Chieh Liu, Tsung-Han Liu, Chia-Hao Su, Chuan-Chin Chiao
The optic lobe is the largest structure in the cuttlefish brain. While the general morphology of the optic lobe in adult cuttlefish has been well described, the 3D structure and ontogenetic development of its neural organization have not been characterized. To correlate observed behavioral changes within the brain structure along the development of this animal, optic lobes from the late embryonic stage to adulthood were examined systematically in the present study. The MRI scan revealed that the so called "cell islands" in the medulla of the cephalopod's optic lobe (Young, 1962, 1974) are in fact a contiguous tree-like structure...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798694/decomposing-multifractal-crossovers
#11
Zoltan Nagy, Peter Mukli, Peter Herman, Andras Eke
Physiological processes-such as, the brain's resting-state electrical activity or hemodynamic fluctuations-exhibit scale-free temporal structuring. However, impacts common in biological systems such as, noise, multiple signal generators, or filtering by transport function, result in multimodal scaling that cannot be reliably assessed by standard analytical tools that assume unimodal scaling. Here, we present two methods to identify breakpoints or crossovers in multimodal multifractal scaling functions. These methods incorporate the robust iterative fitting approach of the focus-based multifractal formalism (FMF)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798693/phosphorylation-modulates-ameloblastin-self-assembly-and-ca-2-binding
#12
Øystein Stakkestad, Ståle P Lyngstadaas, Bernd Thiede, Jiri Vondrasek, Bjørn S Skålhegg, Janne E Reseland
Ameloblastin (AMBN), an important component of the self-assembled enamel extra cellular matrix, contains several in silico predicted phosphorylation sites. However, to what extent these sites actually are phosphorylated and the possible effects of such post-translational modifications are still largely unknown. Here we report on in vitro experiments aimed at investigating what sites in AMBN are phosphorylated by casein kinase 2 (CK2) and protein kinase A (PKA) and the impact such phosphorylation has on self-assembly and calcium binding...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798692/change-in-the-lipid-transport-capacity-of-the-liver-and-blood-during-reproduction-in-rats
#13
Yufeng Zhang, Christine Kallenberg, Hayden W Hyatt, Andreas N Kavazis, Wendy R Hood
To support the high energetic demands of reproduction, female mammals display plasticity in many physiological processes, such as the lipid transport system. Lipids support the energy demands of females during reproduction, and energy and structural demands of the developing offspring via the placenta in utero or milk during the suckling period. We hypothesized that key proteins supporting lipid transport in reproductive females will increase during pregnancy and lactation, but drop to non-reproductive levels shortly after reproduction has ended...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28798691/fentanyl-promotes-breast-cancer-cell-stemness-and-epithelial-mesenchymal-transition-by-upregulating-%C3%AE-1-6-fucosylation-via-wnt-%C3%AE-catenin-signaling-pathway
#14
Hong-Fang Yang, Ming Yu, Hui-Dan Jin, Jia-Qi Yao, Zhi-Li Lu, Iddrisu B Yabasin, Qiu Yan, Qing-Ping Wen
Cancer pain is a common and severe complication of human breast cancer, and relieving pain is fundamental strategy in the treatment. Fentanyl, as an opioid analgesic, is widely used in breast cancer patients. However, little is known about its effects on stemness and epithelial-mesenchymal transition (EMT) of breast cancer cells. Aberrant protein glycosylation is involved in cancer malignancy. The α1, 6-fucosylation is an important type of glycosylation, and the elevated α1, 6-fucosylation catalyzed by fucosyltransferase VIII (FUT8) is found in many tumors...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790934/skin-lesions-in-swine-with-decompression-sickness-clinical-appearance-and-pathogenesis
#15
Long Qing, Dinesh K Ariyadewa, Hongjie Yi, Yewei Wang, Quan Zhou, Weigang Xu
Skin lesions are visual clinical manifestations of decompression sickness (DCS). Comprehensive knowledge of skin lesions would give simple but strong clinical evidence to help diagnose DCS. The aim of this study was to systematically depict skin lesions and explore their pathophysiological basis in a swine DCS model. Thirteen Bama swine underwent simulated diving in a hyperbaric animal chamber with the profile of 40 msw-35 min exposure, followed by decompression in 11 min. After decompression, chronological changes in the appearance of skin lesions, skin ultrasound, temperature, tissue nitric oxide (NO) levels, and histopathology were studied...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790933/mechanisms-of-smooth-muscle-cell-differentiation-are-distinctly-altered-in-thoracic-aortic-aneurysms-associated-with-bicuspid-or-tricuspid-aortic-valves
#16
Elena Ignatieva, Daria Kostina, Olga Irtyuga, Vladimir Uspensky, Alexey Golovkin, Natalia Gavriliuk, Olga Moiseeva, Anna Kostareva, Anna Malashicheva
Cellular and molecular mechanisms of thoracic aortic aneurysm are not clear and therapeutic approaches are mostly absent. Thoracic aortic aneurysm is associated with defective differentiation of smooth muscle cells (SMC) of aortic wall. Bicuspid aortic valve (BAV) comparing to tricuspid aortic valve (TAV) significantly predisposes to a risk of thoracic aortic aneurysms. It has been suggested recently that BAV-associated aortopathies represent a separate pathology comparing to TAV-associated dilations. The only proven candidate gene that has been associated with BAV remains NOTCH1...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790932/the-effects-of-weaning-methods-on-gut-microbiota-composition-and-horse-physiology
#17
Núria Mach, Aline Foury, Sandra Kittelmann, Fabrice Reigner, Marco Moroldo, Maria Ballester, Diane Esquerré, Julie Rivière, Guillaume Sallé, Philippe Gérard, Marie-Pierre Moisan, Léa Lansade
Weaning has been described as one of the most stressful events in the life of horses. Given the importance of the interaction between the gut-brain axis and gut microbiota under stress, we evaluated (i) the effect of two different weaning methods on the composition of gut microbiota across time and (ii) how the shifts of gut microbiota composition after weaning affect the host. A total of 34 foals were randomly subjected to a progressive (P) or an abrupt (A) weaning method. In the P method, mares were separated from foals at progressively increasing intervals every day, starting from five min during the fourth week prior to weaning and ending with 6 h during the last week before weaning...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790931/microtissues-enhance-smooth-muscle-differentiation-and-cell-viability-of-hadscs-for-three-dimensional-bioprinting
#18
Jin Yipeng, Xu Yongde, Wu Yuanyi, Sun Jilei, Guo Jiaxiang, Gao Jiangping, Yang Yong
Smooth muscle differentiated human adipose derived stem cells (hADSCs) provide a crucial stem cell source for urinary tissue engineering, but the induction of hADSCs for smooth muscle differentiation still has several issues to overcome, including a relatively long induction time and equipment dependence, which limits access to abundant stem cells within a short period of time for further application. Three-dimensional (3D) bioprinting holds great promise in regenerative medicine due to its controllable construction of a designed 3D structure...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790930/it-takes-time-to-be-cool-on-the-relationship-between-hyperthermia-and-body-cooling-in-a-migrating-seaduck
#19
Magella Guillemette, Elias T Polymeropoulos, Steven J Portugal, David Pelletier
The large amount of energy expended during flapping flight is associated with heat generated through the increased work of the flight muscles. This increased muscle work rate can manifest itself in core body temperature (Tb) increase of 1-2°C in birds during flight. Therefore, episodic body cooling may be mandatory in migratory birds. To elucidate the thermoregulatory strategy of a short-distance migrant, common eiders (Somateria mollissima), we implanted data loggers in the body cavity of wild birds for 1 year, and report information on Tb during their entire migration for 19 individuals...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790929/combined-interval-training-and-post-exercise-nutrition-in-type-2-diabetes-a-randomized-control-trial
#20
Monique E Francois, Cody Durrer, Kevin J Pistawka, Frank A Halperin, Courtney Chang, Jonathan P Little
Background: High-intensity interval training (HIIT) can improve several aspects of cardiometabolic health. Previous studies have suggested that adaptations to exercise training can be augmented with post-exercise milk or protein consumption, but whether this nutritional strategy can impact the cardiometabolic adaptations to HIIT in type 2 diabetes is unknown. Objective: To determine if the addition of a post-exercise milk or protein beverage to a high-intensity interval training (HIIT) intervention improves cardiometabolic health in individuals with type 2 diabetes...
2017: Frontiers in Physiology
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