Abstract：
:From wildtype mouse lymphoma cells, a clone (FURT-1A), was isolated by virtue of its resistance to 1 microM 5-fluorouracil. In comparative growth rate experiments, FURT-1A cells were also less sensitive than parental cells to the growth inhibitory effects of thymidine, deoxyguanosine, 5-fluorouridine, and arabinosylcytosine. The altered growth sensitivity of FURT-1A cells to cytotoxic nucleosides was directly related to their decreased ability to accumulate the corresponding triphosphate from exogenous nucleoside. FURT-1A cells contained elevated cytidylate nucleotide pools which prevented normal growth sensitivity and interfered with the salvage of nucleosides. Metabolic flux experiments with [3H]-uridine in situ indicated that FURT-1A cells had a 2-fold enhanced rate of conversion of UTP to CTP. Kinetic analyses indicated that the CTP synthetase activity in extracts of FURT-1A cells was refractory to inhibition by CTP. The genetic loss of normal allosteric inhibition of the CTP synthetase activity in FURT-1A cells could account for the unusual phenotypic properties of these cells.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Aronow B,Ullman Bdoi
10.1007/978-1-4684-1248-2_42subject
Has Abstractpub_date
1986-01-01 00:00:00pages
263-9eissn
0065-2598issn
2214-8019journal_volume
195 Pt Bpub_type
杂志文章abstract：:Suppressor monocytes have been found in a number of human diseases most of which are associated with lymphopenia and deficiences in cell mediated immunity. In our studies both quantitative and qualitative differences in monocytes were detected in certain patients with advanced Hodgkin's disease or tuberculosis. In cer...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4684-8914-9_27
更新日期：1979-01-01 00:00:00
abstract：:EPEC Escherichia coli are an important cause of epidemic diarrhea in infants. The disease is characterized by attaching and effacing (A/E) lesions where the bacteria attach intimately to the enterocyte surface resulting in localized destruction of microvilli. A 35-kb chromosomal locus termed LEE (locus of enterocyte e...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-1828-4_36
更新日期：1997-01-01 00:00:00
abstract：:Despite the enormous efforts of the scientific community over the years, effective therapeutics for many (epi)genetic brain disorders remain unidentified. The common and persistent failures to translate preclinical findings into clinical success are partially attributed to the limited efficiency of current disease mod...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-53889-1_23
更新日期：2017-01-01 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：:During the last 5 years at least four new types of colonisation factors have been described in association with porcine postweaning diarrhea and edema disease strains of E. coli. Recently, evidence was presented that these fimbrial factors are closely related to each other, and therefore the common denomination F18 wa...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-1828-4_26
更新日期：1997-01-01 00:00:00
abstract：:Staphylococcal adherence to an either biotic or abiotic surface is the critical first event in the establishment of an infection with these serious pathogens. Especially Staphylococcus aureus harbours a variety of proteinaceous and non-proteinaceous adhesins that mediate attachment to a multitude of host factors, such...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-0940-9_7
更新日期：2011-01-01 00:00:00
abstract：:Challenging environment of space causes several pivotal alterations in living systems, especially due to microgravity. The possibility of simulating microgravity by ground-based systems provides research opportunities that may lead to the understanding of in vitro biological effects of microgravity by eliminating the ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/5584_2020_539
更新日期：2020-01-01 00:00:00
abstract：:There has been a continued interest in translational research focused on both natural products and manipulation of functional groups on these compounds to create novel derivatives with higher desired activities. Oleanolic acid, a component of traditional Chinese medicine used in hepatitis therapy, was modified by chem...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-41342-6_13
更新日期：2016-01-01 00:00:00
abstract：:This article reviews the factors influencing myocardial oxygen supply and demand. The regulative mechanisms in coronary blood flow, especially in critical conditions, are explained. Myocardial oxygenation in coronary artery disease is discussed with special reference to pharmacological intervention. An extensive evalu...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-3428-0_63
更新日期：1992-01-01 00:00:00
abstract：:Our current understanding of focal seizures strongly suggests a model of damage and associated synaptic reorganization that leads to periodic 'spontaneous' hyperexcitation and/or sustained firing that generates seizures. Our working model of a human epileptic focus assumes that there will often be inexcitability near ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-7971-3_8
更新日期：1986-01-01 00:00:00
abstract：:Cancer development originates in a single mutant cell transformed from a normal cell, including further evolution of pro-tumor cells through additional mutations into malignant cancer tissues. Data from recent studies, however, suggest that most pro-tumor cells do not develop into tumors but remain dormant within or a...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-23629-8_5
更新日期：2019-01-01 00:00:00
abstract：:Autosomal Dominant Polycystic Kidney Disease (ADPKD) is one of the most common inherited disorders. It is the fourth leading cause of renal replacement and renal failure worldwide. Mutations in PKD1 or PKD2 cause ADPKD. Patients with ADPKD show progressive growth of renal cysts filled with cystic fluid, leading to end...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-10-2041-4_1
更新日期：2016-01-01 00:00:00
abstract：:Enteropathogenic Escherichia coli (EPEC) produce attaching and effacing lesions. The genes responsible for this lesion are clustered on the chromosome forming a 35.5 kilobase pathogenesis island called LEE. The LEE was identified, characterized and completely sequenced from the human EPEC strain E2348/69. The LEE carr...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-4143-1_11
更新日期：1999-01-01 00:00:00
abstract：:Genetic transformation is a critical component to the fundamental genetic analysis of insect species and holds great promise for establishing strains that improve population control and behavior for practical application. This is especially so for insects that are disease vectors, many of which are currently subject t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-78225-6_1
更新日期：2008-01-01 00:00:00
abstract：:Lipid composition and Ca2+ transport properties were examined in the isolated sarcoplasmic reticulum of non-exercised muscles of markedly phosphorus depleted rats. Phosphorous depletion with a fall of plasma Pi from 8.04 +/- 0.85 to 2.56 +/- 0.48 mg/dl was accompanied by a decrease in muscle Pi and ATP content and by ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-9167-2_36
更新日期：1980-01-01 00:00:00
abstract：:Vitiligo is a disorder of the melanocytes that results in a dynamic spectrum of skin depigmentation. Its etiology is complex and multifactorial, with data supporting several different hypotheses. Given its prominent phenotype, vitiligo has a significant negative impact on quality of life. Coupled with the chronic and ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-56017-5_5
更新日期：2017-01-01 00:00:00
abstract：:In the post-genomic era, the first step in any study of protein function is a homology search against the complete genome sequence of the organism of interest. By analogy, if we also wish to elucidate the cadre of signaling and regulatory pathways in the cell, an extremely powerful first step is to construct a complet...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-8861-4_3
更新日期：2004-01-01 00:00:00
abstract：:Fossilized insect specimens from the late Paleozoic Era (approximately 250 million years ago) were significantly larger than related extant species. Geologic estimates suggest that atmospheric oxygen in the late Paleozoic Era was 35%. These findings have led to a prominent hypothesis that insect body size may be limit...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-0-387-75434-5_17
更新日期：2007-01-01 00:00:00
abstract：:Gene therapy delivery using viral vectors has demonstrated efficient transfection but has safety issues. The need for safer yet effective delivery systems has led to the active development of non-viral techniques. In this chapter, we will discuss two evolving techniques - sonoporation with microbubble contrast agents ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4471-6458-6_12
更新日期：2014-01-01 00:00:00
abstract：:Sonodynamic therapy (SDT) represents an emerging approach that offers the possibility of non-invasively eradicating solid tumors in a site-directed manner. It involves the sensitization of target tissues with a non-toxic sensitizing chemical agent and subsequent exposure of the sensitized tissues to relatively low-int...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-22536-4_22
更新日期：2016-01-01 00:00:00
abstract：:The prognosis of patients with pulmonary arterial hypertension (PAH) is poor. Available therapies (Ca(++)-channel blockers, epoprostenol, bosentan) have limited efficacy or are expensive and associated with significant complications. PAH is characterized by vasoconstriction, thrombosis in-situ and vascular remodeling....
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-8997-0_21
更新日期：2003-01-01 00:00:00
abstract：:The respiratory control system is not fully developed in newborn, and data suggest that adequate nutrition is important for the development of the respiratory control system. Infants need to be fed every 2-4 h to maintain appropriate energy levels, but a skip of feeding can occur due to social economical reasons or mi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-18440-1_20
更新日期：2015-01-01 00:00:00
abstract：:The kainate-type glutamate receptor displays strong modulation by monovalent anions and cations. This modulation is independent of permeation of the ion channel. Instead, structural, computational and biophysical evidence shows that receptor activity is controlled by binding of sodium and chloride ions at sites that s...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-9557-5_9
更新日期：2011-01-01 00:00:00
abstract：:RPPA technology has graduated from a research tool to an essential component of clinical drug discovery research and personalized medicine. Next generations of RPPA technology will be a single clinical instrument that integrates all the steps of the workflow. ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-981-32-9755-5_1
更新日期：2019-01-01 00:00:00
abstract：:The surface protein S of transmissible gastroenteritis virus (TGEV) has a sialic acid binding activity that enables the virus to agglutinate erythrocytes. A protocol is described that has been successfully applied to the isolation of hemgglutination-defective mutants. The potential of these mutants for the characteriz...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-5331-1_73
更新日期：1998-01-01 00:00:00
abstract：:The influence of Ca2+ dissociation rate from TnC and decreased cross-bridge detachment rate on the time course of relaxation induced by flash photolysis of diazo-2 in rabbit skinned psoas fibers was investigated at 15 degrees C. A TnC mutant (M82Q TnC) that exhibited increased Ca2+ sensitivity caused by a decreased Ca...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-9029-7_51
更新日期：2003-01-01 00:00:00
abstract：:Techniques of rare event dynamics were reviewed including the string methods, which will be implemented with the biochemical simulation packages. The existing methods were applied to study biological systems with relevance to drug design and drug metabolism. The rare event dynamics simulations were performed to unders...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-017-9245-5_6
更新日期：2015-01-01 00:00:00
abstract：:Islet transplantation is emerging as a viable treatment option for selected patients with type 1 diabetes. Following the initial report in 2000 from Edmonton of insulin independence in seven out of seven consecutive recipients, there has been a huge expansion in clinical islet transplantation. The challenge we now fac...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-90-481-3271-3_30
更新日期：2010-01-01 00:00:00
abstract：:The loss of biological activity upon heating or agitation of human interferons is markedly altered by changing their aqueous environment. Low pH significantly stabilizes liquid fibroblast interferon at 68 degrees C and 37 degrees C whereas chaotropic salts stabilize at 68 degrees C but not at 37 degrees C; this anomal...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-9080-4_11
更新日期：1978-01-01 00:00:00
abstract：:The purpose of this study was to develop a non-dimensional approach towards the description of interaction between the three respiratory stimuli of hypoxia, hypercapnia and exercise and to use this approach to quantify the relative strengths of their interactions. Only a part of the study related to the overall intera...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-0-387-73693-8_43
更新日期：2008-01-01 00:00:00
