Abstract:
:Muscle wasting in cancer cachexia can be alleviated by blocking activin receptor type 2 (ACVR2) ligands through changes in protein synthesis/degradation. These changes in cellular and protein metabolism may alter protein homeostasis. First, we elucidated the acute (1-2 days) and 2-week effects of blocking ACVR2 ligands by soluble activin receptor 2B (sACVR2B-Fc) on unfolded protein response (UPR), heat shock proteins (HSPs) and redox balance in a healthy mouse skeletal muscle. Second, we examined UPR, autophagy and redox balance with or without sACVR2B-Fc administration in muscle and liver of C26 tumor-bearing mice. The indicators of UPR and HSPs were not altered 1-2 days after a single sACVR2B-Fc administration in healthy muscles, but protein carbonyls increased (p < 0.05). Two weeks of sACVR2B-Fc administration increased muscle size, which was accompanied by increased UPR markers: GRP78 (p < 0.05), phosphorylated eIF2α (p < 0.01) and HSP47 (p < 0.01). Additionally, protein carbonyls and reduced form of glutathione increased (GSH) (p < 0.05). On the other hand, C26 cancer cachexia manifested decreased UPR markers (p-eIF2α, HSP47, p-JNK; p < 0.05) and antioxidant GSH (p < 0.001) in muscle, whereas the ratio of oxidized to reduced glutathione increased (GSSG/GSH; p < 0.001). Administration of sACVR2B-Fc prevented the decline in GSH and increased some of the UPR indicators in tumor-bearing mice. Additionally, autophagy markers LC3II/I (p < 0.05), Beclin-1 (p < 0.01), and P62 (p < 0.05) increased in the skeletal muscle of tumor-bearing mice. Finally, indicators of UPR, PERK, p-eIF2α and GRP78, increased (p < 0.05), whereas ATF4 was strongly decreased (p < 0.01) in the liver of tumor-bearing mice while sACVR2B-Fc had no effect. Muscle GSH and many of the altered UPR indicators correlated with tumor mass, fat mass and body mass loss. In conclusion, experimental cancer cachexia is accompanied by distinct and tissue-specific changes in proteostasis. Muscle hypertrophy induced by blocking ACVR2B ligands may be accompanied by the induction of UPR and increased protein carbonyls but blocking ACVR2B ligands may upregulate antioxidant protection.
journal_name
Front Physioljournal_title
Frontiers in physiologyauthors
Hentilä J,Nissinen TA,Korkmaz A,Lensu S,Silvennoinen M,Pasternack A,Ritvos O,Atalay M,Hulmi JJdoi
10.3389/fphys.2018.01917subject
Has Abstractpub_date
2019-01-18 00:00:00pages
1917issn
1664-042Xjournal_volume
9pub_type
杂志文章abstract::Intermittent hypoxia (IH), characterized as cyclic episodes of short-period hypoxia followed by normoxia, occurs in many physiological and pathophysiological conditions such as pregnancy, athlete, obstructive sleep apnea, and asthma. Hypoxia can induce autophagy, which is activated in response to protein aggregates, i...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.00995
更新日期:2019-08-07 00:00:00
abstract::Objective: The aim of the present study was to elucidate the effects of Mindfulness-based interventions (MBIs) on salivary cortisol levels in healthy adult populations. Method: We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs), published between January 1980 and June 2015 in Pub...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2016.00471
更新日期:2016-10-19 00:00:00
abstract::Background: Recent studies have shown that blood-based miRNAs are dysregulated in patients with acute myocardial infarction (AMI) and are therefore a potential tool for the diagnosis of AMI. Therefore, this study summarized and evaluated studies focused on microRNAs as novel biomarkers for the diagnosis of AMI from th...
journal_title:Frontiers in physiology
pub_type:
doi:10.3389/fphys.2020.00691
更新日期:2020-08-14 00:00:00
abstract::Long non-coding RNAs (lncRNAs) play important roles in transcriptional and post-transcriptional regulation. However, little is currently known about the mechanisms by which they regulate skeletal muscle development in the chicken. In this study, we used RNA sequencing to profile the leg muscle transcriptome (lncRNA an...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2016.00687
更新日期:2017-01-09 00:00:00
abstract::The heart is a highly structured organ consisting of different cell types, including myocytes, endothelial cells, fibroblasts, stem cells, and inflammatory cells. This pluricellularity provides the opportunity of intercellular communication within the organ, with subsequent optimization of its function. Intercellular ...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2018.00382
更新日期:2018-04-11 00:00:00
abstract::Periodontal ligament contains periodontal ligament stem cells that maintain tissue homeostasis. Targeting hPDLSCs (human periodontal ligament cells) is a promising strategy for repair and regeneration of bone tissue destroyed by periodontal diseases. However, the mechanisms by which PDLSCs differentiate into osteoblas...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.01175
更新日期:2019-09-12 00:00:00
abstract::Insect β-1,3-glucanases belong to Glycoside Hydrolase Family 16 (GHF16) and are involved in digestion of detritus and plant hemicellulose. In this work, we investigated the role of GHF16 genes in Aedes aegypti larvae, due to their detritivore diet. Aedes aegypti genome has six genes belonging to GHF16 (Aae GH16.1 - Aa...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.00122
更新日期:2019-02-28 00:00:00
abstract::Systems biology approaches provide means to study the interplay between biological processes leading to the mechanistic understanding of the properties of complex biological systems. Here, we developed a vector format rule-based Boolean logic model of the yeast S. cerevisiae cAMP-PKA, Snf1, and the Snf3-Rgt2 pathway t...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01964
更新日期:2019-01-21 00:00:00
abstract::Introduction: Heart Rate Variability (HRV) and Pulse Rate Variability (PRV), are non-invasive techniques for monitoring changes in the cardiac cycle. Both techniques have been used for assessing the autonomic activity. Although highly correlated in healthy subjects, differences in HRV and PRV have been observed under ...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.00779
更新日期:2020-07-23 00:00:00
abstract::Background and Purpose: Store-operated calcium entry (SOCE) is an important physiological phenomenon that extensively mediates intracellular calcium ion (Ca2+) load. It has been previously found in myocytes isolated from neonatal or diseased hearts. We aimed to determine its existence, molecular nature in undiseased h...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01785
更新日期:2018-12-13 00:00:00
abstract::Coronary microembolization (CME) is an important clinical problem, and it is related to poor outcome. The specific molecular mechanisms of CME are not fully understood. In the present study, we established a mice model of CME. Isobaric tags for relative and absolute quantitation (iTRAQ) and liquid chromatography coupl...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01318
更新日期:2018-09-19 00:00:00
abstract::Claudin-1 is a tight junction transmembrane protein. Its localization in the maturation ameloblasts of rat incisors was examined by immunofluorescence microscopy. Distal junction area of ruffle-ended ameloblasts (RA) and the Golgi apparatus of a sub-population of smooth-ended ameloblasts (SA) and RAs stained positive ...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2010.00150
更新日期:2010-11-16 00:00:00
abstract::This study examined the selective influences of one-repetition maximum (1RM) values [assessed in the half-squat (HS)] and bar-power production [assessed in both HS and jump squat (JS) exercises] on the physical performance of male and female team sport athletes from four different sports. Three-hundred and three elite...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01820
更新日期:2018-12-17 00:00:00
abstract:Introduction:Baroreflex sensitivity (BRS) is essential to ensure rapid adjustment to variations in blood pressure (BP). Spontaneous baroreflex function can be assessed using continuous recordings of blood pressure. The goal of this study was to compare four methods for BRS quantification [the sequence, Bernardi's (BER)...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.01505
更新日期:2019-12-10 00:00:00
abstract::Inflammatory bowel diseases (IBD), which include Crohn's disease and ulcerative colitis, are chronic inflammatory disorders that can affect the whole gastrointestinal tract or the colonic mucosal layer. Current therapies aiming to suppress the exaggerated immune response in IBD largely rely on compounds with non-satis...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00566
更新日期:2017-08-07 00:00:00
abstract::Anatomical evidence in several species shows highly heterogeneous fat distribution in the atrial and ventricular myocardium. Atrial appendages have fat deposits, and more so on the posterior left atrium. Although such fat distributions are considered normal, fatty infiltration is regarded arrhythmogenic, and various c...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2018.00002
更新日期:2018-01-22 00:00:00
abstract::Currently, schizophrenia is considered a multifactorial disease. Over the past 50 years, many investigators have considered the role of toxic free radicals in the etiology of schizophrenia. This is an area of active research which is still evolving. Here, we review the recent data and current concepts on the roles of ...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2015.00139
更新日期:2015-05-11 00:00:00
abstract::Liver cirrhosis (LC) is the final usual outcome of liver damage induced by various chronic liver diseases. Because of asymptomatic nature of LC, it is usually diagnosed at late and advanced stages, and patients are easy to miss the best timing for treatment. Thus, the early detection of LC is needed. In the prospectiv...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2019.01421
更新日期:2019-11-19 00:00:00
abstract::Hyperglycemia is the main feature of diabetes and may increase the risk of vascular calcification (VC), which is an independent predictor for cardiovascular and cerebrovascular diseases (CCD). Selenium (Se) may decrease the risk of CCD, and previous studies confirmed that Se-containing protein from Se-enriched Spiruli...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.00791
更新日期:2020-07-09 00:00:00
abstract::Obesity is characterized by an excessive increase in body mass, leading to endothelial damage that may favor the development of erectile dysfunction (ED). ED is defined as the inability to achieve or maintain a penile erection long enough to have a sexual intercourse. In this context, different ED models were develope...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00760
更新日期:2017-10-04 00:00:00
abstract::Since the late 2010s, Transcranial Ultrasound Stimulation (TUS) has been used experimentally to carryout safe, non-invasive stimulation of the brain with better spatial resolution than Transcranial Magnetic Stimulation (TMS). This innovative stimulation method has emerged as a novel and valuable device for studying br...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2020.01042
更新日期:2020-08-19 00:00:00
abstract::Myokines are peptides known to modulate brain neuroplasticity, adipocyte metabolism, bone mineralization, endothelium repair and cell growth arrest in colon and breast cancer, among other processes. Repeated skeletal muscle contraction induces the production and secretion of myokines, which have a wide range of functi...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2019.01463
更新日期:2019-11-28 00:00:00
abstract::The goal here is to describe our current understanding of heme metabolism and the deleterious effects of "free" heme on immunological processes, endothelial function, systemic inflammation, and various end-organ tissues (e.g., kidney, lung, liver, etc.), with particular attention paid to the role of hemopexin (HPX). B...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2015.00187
更新日期:2015-06-30 00:00:00
abstract::This review details the manner in which the central nervous system regulates metabolic homeostasis in normal weight and obese rodents and humans. It includes a review of the homeostatic contributions of neurons located in the hypothalamus, the midbrain and limbic structures, the pons and the medullary area postrema, n...
journal_title:Frontiers in physiology
pub_type: 杂志文章,评审
doi:10.3389/fphys.2018.00574
更新日期:2018-05-17 00:00:00
abstract:UNLABELLED:Oxycodone (OXY) is one of the most commonly abused opiates during pregnancy. Perinatal opiate exposure (POE) is associated with neurobehavioral and hormone changes. Little is known about the effects of perinatal OXY on the cardiovascular (CV) responses to stress. OBJECTIVES:to determine the effects of POE o...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2013.00085
更新日期:2013-04-24 00:00:00
abstract::Background: A range of computational methods that rely on the analysis of genome-wide expression datasets have been developed and successfully used for drug repositioning. The success of these methods is based on the hypothesis that introducing a factor (in this case, a drug molecule) that could reverse the disease ge...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2017.00753
更新日期:2017-09-28 00:00:00
abstract::We examined structural properties of the marine mammal respiratory system, and tested Scholander's hypothesis that the chest is highly compliant by measuring the mechanical properties of the respiratory system in five species of pinniped under anesthesia (Pacific harbor seal, Phoca vitulina; northern elephant seal, Mi...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2014.00433
更新日期:2014-11-10 00:00:00
abstract::Cachexia, or wasting of skeletal muscle and fat, afflicts many patients with chronic diseases including cancer, organ failure, and AIDS. Muscle wasting reduces quality of life and decreases response to therapy. Cachexia is caused partly by elevated inflammatory cytokines, including interleukin-6 (IL-6). Others and we ...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2016.00682
更新日期:2017-01-18 00:00:00
abstract::Background: The possibility of non-invasively assessing load-independent parameters characterizing cardiac function is of high clinical value. Typically, these parameters are assessed during resting conditions. However, for diagnostic purposes, the parameter behavior across a physiologically relevant range of heart ra...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2018.01515
更新日期:2018-10-30 00:00:00
abstract::Muscle fatigue is the decline in performance of muscles observed during periods of intense activity. ATP consumption exceeds production during intense activity and there are multiple changes in intracellular metabolites which may contribute to the changes in crossbridge activity. It is also well-established that a red...
journal_title:Frontiers in physiology
pub_type: 杂志文章
doi:10.3389/fphys.2012.00463
更新日期:2012-12-11 00:00:00