Abstract：
:Insulin-like growth factor 1 (IGF-1) is a key anabolic growth factor stimulating phosphatidylinositol 3-kinase (PI3K)/Akt signaling which is well known for regulating muscle hypertrophy. However, the role of IGF-1 in muscle atrophy is less clear. This review provides an overview of the mechanisms via which IGF-1 signaling is implicated in several conditions of muscle atrophy and via which mechanisms protein turnover is altered. IGF-1/PI3K/Akt signaling stimulates the rate of protein synthesis via p70S6Kinase and p90 ribosomal S6 kinase and negatively regulates protein degradation, predominantly by its inhibiting effect on proteasomal and lysosomal protein degradation. Caspase-dependent protein degradation is also attenuated by IGF/PI3K/Akt signaling, whereas evidence for an effect on calpain-dependent protein degradation is inconclusive. IGF-1/PI3K/Akt signaling reduces during denervation-, unloading-, and joint immobilization-induced muscle atrophy, whereas IGF-1/PI3K/Akt signaling seems unaltered during aging-associated muscle atrophy. During denervation and aging, IGF-1 overexpression or injection counteracts denervation- and aging-associated muscle atrophy, despite enhanced anabolic resistance with regard to IGF-1 signaling with aging. It remains unclear whether pharmacological stimulation of IGF-1/PI3K/Akt signaling attenuates immobilization- or unloading-induced muscle atrophy. Exploration of the possibilities to interfere with IGF-1/PI3K/Akt signaling reveals that microRNAs targeting IGF-1 signaling components are promising targets to counterbalance muscle atrophy. Overall, the findings summarized in this review show that in disuse conditions, but not with aging, IGF-1/PI3K/Akt signaling is attenuated and that in some conditions stimulation of this pathway may alleviate skeletal muscle atrophy.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Timmer LT,Hoogaars WMH,Jaspers RTdoi
10.1007/978-981-13-1435-3_6subject
Has Abstractpub_date
2018-01-01 00:00:00pages
109-137eissn
0065-2598issn
2214-8019journal_volume
1088pub_type
杂志文章,评审abstract：:Biological samples of human and animal origin are utilized in research for many purposes and in a variety of scientific fields, including mass spectrometry-based proteomics. Various types of samples, including organs, tissues, cells, body fluids such as blood, plasma, cerebrospinal fluid, saliva and semen, can be coll...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-41448-5_1
更新日期：2016-01-01 00:00:00
abstract：:MicroRNAs (miRNAs) are a class of ∼22nt non-coding RNAs that regulate the translational potential and stability of mRNAs. Though constituting only 1-4% of human genes, miRNAs are predicted to regulate more than 60% of all mRNAs. The action of miRNAs is mediated through their associations with Argonaute proteins and mR...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4614-5107-5_10
更新日期：2013-01-01 00:00:00
abstract：:1-Deprenyl, a selective irreversible MAO-B inhibitor, has been shown to prolong the onset of disability in Parkinson's patients and to improve cognitive behavior in Alzheimer's disease. It has been claimed that 1-deprenyl exhibits neuroprotective and neurorescue effects in several animal models. The precise mechanism ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-1857-0_3
更新日期：1995-01-01 00:00:00
abstract：:The secretory granules of pancreatic beta cells are specialized organelles responsible for the packaging, storage and secretion of the vital hormone insulin. The insulin secretory granules also contain more than 100 other proteins including the proteases involved in proinsulin-to insulin conversion, other precursor pr...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-12668-1_2
更新日期：2019-01-01 00:00:00
abstract：:The Adair four-step kinetic model for the reactions of haemoglobin and oxygen recognizes five haemoglobin species, corresponding to deoxyhaemoglobin and one species for each level of oxygenation of the four haem groups. Thus, an oxygen transport problem involves a system of five simultaneous non-linear partial differe...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-7433-6_22
更新日期：1987-01-01 00:00:00
abstract：:Langerhans cells (LCs) are immune cells that reside in the stratified epithelium of the skin and mucosal membranes. They play a range of roles in the skin, including antigen presentation and maintenance of peripheral tolerance. Reports of LC numbers have been variable in different cancer types, with the majority of st...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-030-49270-0_8
更新日期：2020-01-01 00:00:00
abstract：:Hypertension increases the risks of end-organ injury, maternal/fetal vulnerability, and total mortality. Throughout the world, it kills about 7.5 million people every year. During 1975-2015, the number of adults with hypertension increased from 594 million to more than 1.1 billion, mostly due to the increase in the lo...
journal_title：Advances in experimental medicine and biology
pub_type：
doi：10.1007/5584_2017_30
更新日期：2017-01-01 00:00:00
abstract：:We have shown that urinary taurine level may be used as a biomarker of pathological and biochemical lesions. Detection of changes in the urinary concentration of this low molecular weight metabolite indicates biochemical lesions which may also be associated with pathological damage. Hepatotoxic compounds such as CCl4,...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-0182-8_15
更新日期：1996-01-01 00:00:00
abstract：:Increased formation of ROS on reperfusion after ischemia underlies ischemia reperfusion (I/R) damage. We measured, in real time, both oxygen tension in microvessels and tissue and oxidant stress during postischemic reperfusion in hamster cheek pouch microcirculation. We measured PO2 by using phosphorescence quenching ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/0-387-26206-7_4
更新日期：2005-01-01 00:00:00
abstract：:Gout disease in our country as both exogenous factors (dietary habits, professions, etc.) and endogenous factors (sex, inheritance, etc.) play a polygenic role in its incidence. Those conditions resulting in hyperuricemia (diseases, drugs, etc.) facilitate the clinical manifestations. But a genetic determinant in the ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3285-5_32
更新日期：1977-01-01 00:00:00
abstract：:The quantification of tissue oxygen by frequency or time domain methods has been discussed in a number of prior publications where the meaning of the tissue hemoglobin oxygen saturation was unclear and where the CW instruments were unsuitable for proper quantitative measurements [1, 2]. The development of the IQ Phase...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-0075-9_2
更新日期：2003-01-01 00:00:00
abstract：:Uterine peroxidase enzyme activity has been studied as a marker for estrogen action in the uterus to help clarify the mechanism of estrogen action and its modulation by antiestrogens and progestins. Estrogen-induced increases in peroxidase were found to closely parallel increases in uterine weight and DNA content in t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4757-6589-2_8
更新日期：1979-01-01 00:00:00
abstract：:During the co-evolution of viruses and their hosts, the latter have equipped themselves with an elaborate immune system to defend themselves from the invading viruses. In order to establish a successful infection, replicate and persist in the host, viruses have evolved numerous strategies to counter and evade host ant...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-09789-3_22
更新日期：2008-01-01 00:00:00
abstract：:The mammalian neprilysin (NEP) family comprises at least seven members: NEP itself, Kell blood group antigen (KELL), the endothelin-converting enzymes (ECE-1 and ECE-2), the enzyme PEX, associated with X-linked hypophosphataemia, "X-converting enzyme" (XCE) a CNS-expressed orphan peptidase and a soluble, secreted endo...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-306-46826-3_25
更新日期：2000-01-01 00:00:00
abstract：:Erythrocyte phosphoribosylpyrophosphate availability for adenine was measured by silicon oil method previously described. The homozygotes of Japanese type APRT deficiency (n = 6, from 4 families) showed 4.3 +/- 2.7% (mean +/- standard deviation) of adenine PRPP availability and the heterozygotes (n = 5) showed 86.0 +/...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5673-8_6
更新日期：1989-01-01 00:00:00
abstract：:The effects of high hydrostatic pressure (HHP) on gel strength, microbial numbers, proteolytic activity, color and pH of Pacific whiting surimi gels were investigated. Strong gels without the use of protease inhibitors were formed with HHP treatments from 1-4 kBars. Gel strength was not affected by holding time. Total...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-1925-0_6
更新日期：1998-01-01 00:00:00
abstract：:Among the proteins that comprise the albumin family, alpha-fetoprotein (AFP) is the only member which exhibits immunoregulatory properties. However, some investigations have argued that AFP-mediated immunosuppression is not an inherent property of the molecule itself, but is instead, hypothesized to be either a functi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-1891-4_27
更新日期：1995-01-01 00:00:00
abstract：:Legume proteins are relatively deficient in the sulfur amino acids. Among the different strategies to increase the sulfur amino acid contents of legumes, we have chosen to increase the biosynthesis of endogenous, non-abundant sulfur-rich proteins we have identified in soybean seed. We identified and isolated an 8 kDa ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-4729-7_10
更新日期：1999-01-01 00:00:00
abstract：:At this point, it may be worthwhile to list, in summary form, the important aspects of divalent cation and nucleotide binding to actin that have been reviewed here: 1) High affinity divalent cation binding to actin is very tight, with equilibrium dissociation constant KCa approximately 1 nM and KMg approximately 5 nM ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-2578-3_4
更新日期：1994-01-01 00:00:00
abstract：:To investigate age-related changes in the shape of trachea, normal male volunteers (n = 83, mean +/- SD: 47.7 +/- 20.2 years old) underwent inspiratory CT scans at full inspiration and lung function tests. Subjects who showed VC < 80% predicted or FEV1 < 80% predicted on lung function tests were excluded. The CT data,...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-1241-1_16
更新日期：2010-01-01 00:00:00
abstract：:Heparan sulphate (HS) is a linear glycosaminoglycan found ubiquitously on the surface and in the pericellular matrix of metazoan cells that is covalently attached to core proteins to form HS proteoglycans. HS interacts specifically with a large number (> 100) of extracellular regulatory proteins, many of which are key...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-306-46832-8_7
更新日期：2000-01-01 00:00:00
abstract：:The first purpose of this work was to obtain direct evidence that tissue kallikreins cleave arginyl bonds when the leaving group is Arg-Val, and on the contrary, do not split them when it is Arg-Pro; the second aim was to ascertain whether this specificity could be used as a criterion, for characterizing tissue kallik...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5143-6_33
更新日期：1986-01-01 00:00:00
abstract：:Sex differences in cardiovascular diseases can be classified as those which are specific to one sex and those that differ in incidence, prevalence, etiology, symptomatology, response to treatment, morbidity, and mortality in one sex compared to the other. All sex differences in cardiovascular conditions have their bas...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-77932-4_27
更新日期：2018-01-01 00:00:00
abstract：:The basic physical and functional unit of heredity; made up of DNA, they act as instructions to make proteins. There are about 20,000-25,000 genes in humans, with size varying from a few hundred DNA bases to more than 2 million bases. Most genes are the same in all people; less than 1% differ. Each person has two copi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-95046-4_7
更新日期：2018-01-01 00:00:00
abstract：:We recently reported that volatile anaesthetics directly depress the isolated glomus cell response to hypoxia, halothane more so than sevoflurane, in a manner mimicking the action of these agents on the human hypoxic ventilatory response. We wished to extend these investigations to action of another agent (isoflurane)...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-5692-7_41
更新日期：2010-01-01 00:00:00
abstract：:Methylated endotoxin and Freeman-type polysaccharide each stimulate granulopoiesis and the production of CSF in mice. These same preparations also protect pretreated mice from lethal X-irradiation. The role of CSF in stimulating granulopoiesis in vivo was shown by the ability of anti-CSF to reduce the number of CFUc i...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-8914-9_6
更新日期：1979-01-01 00:00:00
abstract：:Embryo implantation requires a reciprocal interaction between the blastocyst and endometrium and is associated with complex regulatory mechanisms. Since their discovery, microRNAs became prominent candidates providing missing links for many biological pathways. In recent years, microRNAs were implicated as one of the ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-22380-3_8
更新日期：2015-01-01 00:00:00
abstract：:When used as initial therapy in combination with two nucleoside reverse transcriptase inhibitors, indinavir, ritonavir, nelfinavir and possible saquinavir-soft gel capsule (saquinavir-sgc) are highly effective agents. Patients who have been extensively pretreated, have advanced immunodeficiency or are unable to adhere...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-4743-3_17
更新日期：1999-01-01 00:00:00
abstract：:The survival of three-dimensional tissue requires a vascular network to provide transport of oxygen and metabolic byproduct. Here, we report a new approach to create capillary blood vessels in vitro on biomaterials suitable for use as scaffolds in engineering tissues. Endothelial cells were cultured on chemical and to...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-0-387-74911-2_23
更新日期：2008-01-01 00:00:00
abstract：:As a part of the multi-disciplinary "SELENA-T"-2015 Bed Rest Study, we investigated the pattern of inspiratory muscles fatigue in 22 healthy male subjects during incremental exercise test to exhaustion before and after 21 days of hypokinesia evoked by bed rest. Hypokinesia consisted of head-down bed rest (HDBR) at a m...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/5584_2016_16
更新日期：2016-01-01 00:00:00
