Abstract：
:To evaluate interrelationships among the oxygenation, the energy status, and the development of necrosis in tumor microregions, oxygen tensions were measured with microelectrodes, and ATP distributions were determined with a quantitative imaging technique using multicellular spheroids as in vitro tumor models. The results obtained show a positive correlation between central oxygen tensions and ATP concentrations in spheroids. During spheroid growth, both quantities decrease from rather high values to recordings close to or at the background level within similar ranges of spheroid size. Since the emergence of central necroses precedes this drop in energy-rich phosphate, the data may suggest that energy metabolism is not directly involved in the development of necrosis in the spheroids investigated.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Walenta S,Dötsch J,Bourrat-Flöck B,Mueller-Klieser Wdoi
10.1007/978-1-4684-8181-5_102subject
Has Abstractpub_date
1990-01-01 00:00:00pages
889-93eissn
0065-2598issn
2214-8019journal_volume
277pub_type
杂志文章abstract：:Although a time-resolved near-infrared spectroscopy (TRS) system is difficult to make a measurement into 10 s or less at the moment, the system has a great advantage that it measures absolute values of hemoglobin concentrations. In the present study, using a device equipped with a TRS system, we examined individual di...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-1241-1_36
更新日期：2010-01-01 00:00:00
abstract：:Recent near-infrared spectroscopy (NIRS) studies demonstrated that physical exercise enhances working memory (WM) performance and prefrontal cortex (PFC) activity during WM tasks in normal adults. Interestingly, the effects of rehabilitation (i.e. physiotherapy) on post-stroke patients could be enhanced by motor image...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-55231-6_31
更新日期：2017-01-01 00:00:00
abstract：:Even though it has been studied for many years, water-related infectious risk still exists in both care and community environments due to the possible presence of numerous microorganisms such as bacteria, fungi and protists. People can be exposed directly to these microorganisms either through aerosols and water, afte...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/5584_2016_8
更新日期：2016-01-01 00:00:00
abstract：:Tryptophan pyrrole ring cleavage enzymes were assayed in pregnant uterus of mouse. The highest activity was observed at 6.5 days post-coitus (dpc) with a small activity shoulder at 9.5 to 12.5 dpc concepti and placenta. The highest peak at early concepti of 6.5 dpc was coincided with gene expression of tryptophan 2,3-...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-0135-0_50
更新日期：2003-01-01 00:00:00
abstract：:Sodium bisulfite is a food and beverage additive. It is also a salt of the urban air pollutant, sulfur dioxide. Bisulfite catalyzes, at neutral pH and physiological temperatures, the transamination reactions of cytosine derivatives with amines. The products of the reactions are N4-substituted cytosines. Both the alpha...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3282-4_37
更新日期：1977-01-01 00:00:00
abstract：:Tumors consists of subpopulation of cells in which each subtype has contributes to tumor progression. Specifically one subtype known as cancer stem cells are associated with the initiation, progression, resistance to conventional therapies and metastasis. Metastasis is leading cause of cancer related deaths. Overall i...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/5584_2018_279
更新日期：2018-01-01 00:00:00
abstract：:Recently lightguide spectrophotometry (LGS) has been investigated for assessing bowel mucosal oxygenation and may prove helpful in the diagnosis of bowel ischaemia. This pilot study explores the use of LGS and laser Doppler flowmetry (LDF) to measure SO2 and perfusion in the bowel during key stages of colon surgery. S...
journal_title：Advances in experimental medicine and biology
pub_type： 临床试验,杂志文章
doi：10.1007/978-0-387-85998-9_39
更新日期：2009-01-01 00:00:00
abstract：:Chemotherapy is one of the frontline treatments for cancer patients, but the toxic side effects limit its effectiveness and potential. The goal of drug delivery is to reduce these side effects by encapsulating the drugs in a carrier which prevents release and can circulate throughout the body causing minimal damage to...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-94-007-2555-3_14
更新日期：2012-01-01 00:00:00
abstract：:The accumulation of tau filaments in neurons is a pathological hallmark of various neurodegenerative diseases, including Alzheimer's disease. However, it is not the filamentous aggregates themselves, but non-filamentous tau species, tau oligomer, that is thought to be the culprit in tau-mediated neurodegeneration. The...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-32-9358-8_27
更新日期：2019-01-01 00:00:00
abstract：:Non-coding RNAs (ncRNAs) are untranslated RNA molecules that function to regulate the expression of numerous genes and associated biochemical pathways and cellular functions. NcRNAs include small interfering RNAs (siRNAs), microRNAs (miRNAs), PIWI-interacting RNAs (piRNAs), small nucleolar RNAs (snoRNAs) and long non-...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-017-7417-8_7
更新日期：2016-01-01 00:00:00
abstract：:Acid proteinase of granulomatous tissues in rats with carrageenin-induced inflammation released two types of kinin from T-kininogen. The kinin was identified as Ile-Ser-bradykinin (T-kinin) and a novel kinin, Met-Ile-Ser-bradykinin (Met-T-kinin), from determination of its amino acid composition and its immunoreactivit...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-9546-5_17
更新日期：1989-01-01 00:00:00
abstract：:Tissues are often damaged by physical trauma, infection or tumors. A slight injury heals naturally through the normal healing process, while severe injury causes serious health implications. Therefore, many efforts have been devoted to treat and repair various tissue defects. Recently, tissue engineering approaches ha...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-13-0950-2_6
更新日期：2018-01-01 00:00:00
abstract：:Chinese hamster ovary (CHO) cells previously selected in a single-step for resistance to one or two different lectins and assigned to individual phenotypic groups on the basis of their unique patterns of lectin resistance, have been examined for their lectin-binding abilites. The lectin-binding parameters of CHO cells...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3279-4_13
更新日期：1977-01-01 00:00:00
abstract：:After some notions on the mechanisms of action of radio-waves on solid tumours, the treatise illustrates the results achieved in the first 125 cases of malignant tumours treated with this method, its results are definitely encouraging, even in cases apparently with no hope. It also describes briefly the histologic mod...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5766-7_41
更新日期：1990-01-01 00:00:00
abstract：:Human genetic factors play an important role in determining the outcome of infections caused by intracellular pathogens, including mycobacteria and salmonellae (reviewed in 1). The genetic elements involved and the mechanisms by which these control disease-susceptibility versus resistance, however, remain incompletely...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-0059-9_24
更新日期：2003-01-01 00:00:00
abstract：:Articular cartilage contains any ectoenzyme activity, NTP-PPH, which is capable of generating PPi from NTP substrates. The PPi generated is from the cleavage of the alpha-beta pyrophosphate bond of NTP and does not result from the effects of NTP catabolites. NTP-PPH activity is expressed on human skin fibroblasts in c...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5104-7_23
更新日期：1986-01-01 00:00:00
abstract：:Myocytes are characterized by the presence of highly specialized cytoskeletal structures that are part of regularly spaced functional units distributed over long distances. In this chapter we discuss previously published evidence as well as novel data showing that the proper positioning and architecture of Z-disks and...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-0-387-84847-1_12
更新日期：2008-01-01 00:00:00
abstract：:Based on the insights gleaned from decades of research, it seems clear that mechanistic target of rapamycin (mTOR) is an essential signaling node that integrates environmental clues for regulation of cell survival, metabolism and proliferation of the cells. However, overwhelmingly increasing scientific evidence has ad...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-20301-6_15
更新日期：2019-01-01 00:00:00
abstract：:Through the efforts of Correa, Cuello, Haenszel, Tannenbaum and others it was learned that the incidence of gastric cancer in certain areas of Narino (Colombia) was among the highest in the world. These areas of high risk for gastric cancer were adjacent to an area of substantially lower risk. Gastric biopsies from he...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-9200-6_9
更新日期：1981-01-01 00:00:00
abstract：:In this article, we present an overview of simulation strategies in the context of subcellular domains where calcium-dependent signaling plays an important role. The presentation follows the spatial and temporal scales involved and represented by each algorithm. As an exemplary cell type, we will mainly cite work done...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-2888-2_25
更新日期：2012-01-01 00:00:00
abstract：:This study explores brain-computer interfacing, its possible use in serious or educational games and frameworks. Providing real-time feedback regarding cognitive states and behaviours can be a powerful tool for mental health education and games can offer unique and engaging environments for these neurofeedback experie...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-030-19385-0_7
更新日期：2019-01-01 00:00:00
abstract：:Although mitochondrial dysfunction, endoplasmic reticulum (ER) stress, and disrupted lipid and calcium (Ca2+) homeostasis are classically associated with both insulin resistance and β-cell dysfunction in type 2 diabetes mellitus (T2DM), the interplay between these metabolic stresses is less known. Both organelles inte...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-10-4567-7_13
更新日期：2017-01-01 00:00:00
abstract：:Capillary-to-fiber perimeter ratio is a morphometric estimate of muscle capillarity in transverse sections which accounts for the three-dimensional arrangement of the capillary network. We compared different methods for estimating capillary-to-fiber perimeter ratio in muscles with large differences in fiber size and c...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-2468-7_87
更新日期：1994-01-01 00:00:00
abstract：:This review examines the monooxygenase, peroxidase and peroxygenase properties and reaction mechanisms of cytochrome P450 (CYP) enzymes in bacterial, archaeal and mammalian systems. CYP enzymes catalyze monooxygenation reactions by inserting one oxygen atom from O2 into an enormous number and variety of substrates. Th...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-16009-2_1
更新日期：2015-01-01 00:00:00
abstract：:All results presented here would indicate that serotonin plays an important role in animal behavior such as locomotor depression and that, taking into consideration the effects of antidepressants on 5-HT receptor activity as well as recent biochemical findings of human depression, some forms of human depression could ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3860-4_34
更新日期：1981-01-01 00:00:00
abstract：:Throughout evolution, eukaryotic cells have devised different mechanisms to cope with stressful environments. When eukaryotic cells are exposed to stress stimuli, they activate adaptive pathways that allow them to restore cellular homeostasis. Most types of stress stimuli have been reported to induce a decrease in ove...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-030-19966-1_6
更新日期：2019-01-01 00:00:00
abstract：:Forty-eight patients with adenocarcinoma of the gastrointestinal tract were treated on this trial. The MTD of 5-FU given as a 72 hour infusion with high-dose leucovorin was initially determined to be 2000 mg/m2/d. Patients were treated at PALA dose levels ranging from 250 to 2848 mg/m2. Biochemical assessment of targe...
journal_title：Advances in experimental medicine and biology
pub_type： 临床试验,杂志文章
doi：10.1007/978-1-4615-2488-5_13
更新日期：1993-01-01 00:00:00
abstract：:Pigment cells in developing vertebrates are derived from a transient and pluripotent population of cells called neural crest. The neural crest delaminates from the developing neural tube and overlying ectoderm early in development. The pigment cells are the only derivative to migrate along the dorso-lateral pathway. A...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-46954-6_9
更新日期：2006-01-01 00:00:00
abstract：:Fungi that tolerate very high environmental NaCl concentrations are good model systems to study mechanisms that enable them to endure osmotic and salinity stress. The whole genome sequences of six such fungal species have been analysed: Hortaea werneckii, Wallemia ichthyophaga and four Aureobasidium spp.: A. pullulans...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-25304-6_13
更新日期：2016-01-01 00:00:00
abstract：:A monodispersed and ideal solution is a central (unique?) requirement of SAXS to allow one to extract structural information from the recorded pattern. On-line Size Exclusion Chromatography (SEC) marked a major breakthrough, separating particles present in solution according to their size. Identical frames under an el...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-981-10-6038-0_11
更新日期：2017-01-01 00:00:00
