Abstract：
:Renewal of rod photoreceptor outer segments in the mammalian eye involves synchronized diurnal shedding after light onset of spent distal outer segment fragments (POS) linked to swift clearance of shed POS from the subretinal space by the adjacent retinal pigment epithelium (RPE). Engulfed POS phagosomes in RPE cells mature to acidified phagolysosomes, which accomplish enzymatic degradation of POS macromolecules. Here, we used an acidophilic fluorophore LysoTracker to label acidic organelles in freshly dissected, live rat RPE tissue flat mounts. We observed that all RPE cells imaged contained numerous acidified POS phagolysosomes whose abundance per cell was dramatically increased 2 h after light onset as compared to either 1 h before or 4 h after light onset. Lack of organelles of similar diameter (of 1-2 μm) in phagocytosis-defective mutant RCS rat RPE confirmed that LysoTracker live imaging detected POS phagolysosomes. Lack of increase in lysosomal membrane protein LAMP-1 in RPE/choroid during the diurnal phagocytic burst suggests that formation of POS phagolysosomes in RPE in situ may not involve extra lysosome membrane biogenesis. Taken together, we report a new imaging approach that directly detects POS phagosome acidification and allows rapid tracking and quantification of POS phagocytosis by live RPE -tissue ex situ.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Mao Y,Finnemann SCdoi
10.1007/978-3-319-17121-0_95subject
Has Abstractpub_date
2016-01-01 00:00:00pages
717-23eissn
0065-2598issn
2214-8019journal_volume
854pub_type
杂志文章abstract：:The effects of adenosine and its derivatives on binding of alpha 2-adrenergic receptor ligands with homogenates of rat vas deferens were examined. Adenosine and 2-chloradenosine increased the amount of [3H]clonidine binding. ATP had a slight effect, but AMP and adenine had none. The effect of adenosine was inhibited b...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-4805-4_11
更新日期：1984-01-01 00:00:00
abstract：:The view that the cerebral endothelial cells represent the cellular analogue of the blood brain barrier has been generally accepted. The regulation of transport processes operating in the cerebral endothelial cells is of great current interest. Different elements of the intracellular signaling messenger systems have b...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-2920-0_25
更新日期：1993-01-01 00:00:00
abstract：:We studied urinary excretion of active and inactive kallikrein every day for 3 weeks in spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats (WKY) subjected to 5/6 nephrectomy (5/6), 1/2-nephrectomy (1/2) or sham-operation (Sham). We determined urinary active and inactive kallikrein by measuring kallikrein acti...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-9546-5_20
更新日期：1989-01-01 00:00:00
abstract：:Coxiella burnetii is a highly infectious bacterial pathogen that replicates in a specialized vacuole inside eukaryotic cells. Due to a prolonged growth cycle, Coxiella continuously manipulates cellular processes to generate this parasitophorous vacuole (PV) and promote host cell viability. Here, we discuss recent find...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-4315-1_7
更新日期：2012-01-01 00:00:00
abstract：:Measurement of antibody titres to the human polyomaviruses BK and JC has for many years had to rely on Hemagglutination inhibition. In recent years, viral serology based on virus-like particles (VLPs) in enzyme immunoassays (EIAs) has become widely used for a variety of viruses. We sought to establish a modern method ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/0-387-32957-9_7
更新日期：2006-01-01 00:00:00
abstract：:Hypoxic/ischemic trauma is a primary factor in the pathology of various vascular, pulmonary, and cerebral disease states. Yet, the signaling mechanisms by which cells respond and adapt to changes in oxygen levels are not clearly established. The effects of hypoxia on the stress- and mitogen-activated protein kinase (S...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/0-306-46825-5_28
更新日期：2000-01-01 00:00:00
abstract：:The aim of the study was to analyze cardiometabolic risk factors andcarotid intima-media thickness (IMT) in obese children. We studied 122 obese children fulfilling the criteria of the International Obesity Task Force and 58 non-obese children. Anthropometric parameters, blood pressure, lipid profile, C-reactive prote...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/5584_2015_168
更新日期：2016-01-01 00:00:00
abstract：:WEHI-231, a murine B-cell lymphoma, readily undergoes programmed cell death following surface immunoglobulin (Ig) cross-linking [1]. Ceramide has been shown to induce apoptosis in WEHI-231 following its exposure to anti-lg antibodies, dexamethasone, and irradiation [2]. Recently, Haimovitz-Friedman et al. have demonst...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-0274-0_5
更新日期：1996-01-01 00:00:00
abstract：:Taurine plays a protective role against free radicals and toxins in various cells and tissues. However, the effect of taurine on hepatic injury and fibrosis developed by activated hepatic stellate cells (HSC) and myofibroblast-like cells is not fully understood. We investigated the effects of taurine on the hepatic fi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-0-387-75681-3_30
更新日期：2009-01-01 00:00:00
abstract：:The choroid plexuses (CPs) play pivotal roles in basic aspects of neural function including maintaining the extracellular milieu of the brain by actively modulating chemical exchange between the CSF and brain parenchyma, surveying the chemical and immunological status of the brain, detoxifying the brain, secreting a n...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-5786-3_8
更新日期：2010-01-01 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：:The chapter begins with an historical perspective of GAPDH isozymes that is juxtaposed to the fact that there is only one somatic functional gene in humans that is virtually identical among the mammalian species. Over the many years of GAPDH research, dozens of labs have reported the existence of multiple forms of GAP...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-4716-6_6
更新日期：2013-01-01 00:00:00
abstract：:Most of evolutionary theory has abstracted away from how information is coded in the genome and how this information is transformed into traits on which selection takes place. While in the earliest stages of biological evolution, in the RNA world, the mapping from the genotype into function was largely predefined by t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4614-3567-9_10
更新日期：2012-01-01 00:00:00
abstract：:The role of adjuvanticity in the modification of the immune induction was studied by separate application of antigen and adjuvant in mice. An antigen specific plaque forming cell (PFC) test and a delayed type hypersensitivity (DTH) assay were used for these studies. Antigen (SRBC) and adjuvant were applied separately ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4613-2463-8_57
更新日期：1985-01-01 00:00:00
abstract：:Myocarditis is the inflammation of the muscle tissues of the heart (myocardium). After a pathologic cardiac-specific inflammatory process, it may progress to chronic damage and dilated cardiomyopathy. The latter is characterized by systolic dysfunction, whose clinical correlate is heart failure. Nevertheless, other ac...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-57613-8_10
更新日期：2017-01-01 00:00:00
abstract：:Coxsackie B viruses are a common cause of viral myocarditis in humans. A murine model of the human disease has been developed using Coxsackievirus group B, type 3 and inbred Balb/c mice. Infection of T lymphocyte deficient mice does not result in significant myocarditis indicating the importance of T cells in this dis...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-4472-8_29
更新日期：1983-01-01 00:00:00
abstract：:Direct studies linking drugs of abuse with changes in neurotransmitters and subsequent effects on the immune system are not abundant. One can, however, hypothesize that an indirect effect can occur since a variety of neurotransmitters known to be acted on by various drugs of abuse can, in turn, be correlated with chan...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4684-5925-8_2
更新日期：1991-01-01 00:00:00
abstract：:Cell proliferation, apoptosis and differentiation are essential processes from the early phases of embryogenesis to adult tissue formation and maintenance. These mechanisms also play a key role in embryonic stem cells (ESCs) that are able to proliferate maintaining pluripotency and, at the same time, to give rise to a...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/5584_2019_423
更新日期：2020-01-01 00:00:00
abstract：:Transmastoid stimulation in human subjects evokes a single descending volley in corticospinal axons. Electromyographic (EMG) responses to transmastoid stimuli measured in the relaxed elbow flexor muscles after a maximal voluntary contraction (MVC) are depressed by approximately 50% compared to prior to the MVC. The de...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-0713-0_49
更新日期：2002-01-01 00:00:00
abstract：:Cyclopiazonic acid (CPA) is a toxic indole tetramic acid that has been isolated from numerous species of Aspergillus and Penicillium. It has been found as a natural contaminant of cheese, corn, peanuts and various feedstuffs. Historically, thin-layer chromatography has been the most widely used method for quantitative...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-0629-4_11
更新日期：2002-01-01 00:00:00
abstract：:Neural tissue has generally been viewed as resistant to structural changes induced by exogenous factors. Research has shown that the brain responds to changes in diet by altering neurotransmitter synthesis, and by shifting neuroendocrine controls over a variety of physiological events. Animal model research also indic...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-3426-6_17
更新日期：1992-01-01 00:00:00
abstract：:The physiological and psychophysical effects of combined flow resistive loads were studied systematically by using the Multistage Evaluation Scale (MES), determining the number of Just Noticeable Difference (JND) steps, and constructing equivalent resistive-load-sensation contours. During combined resistive loading, t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:The tumor microenvironment plays a determining role in cancer development through a plethora of interactions between the extracellular matrix and tumor cells. Decorin is a prototype member of the SLRP family found in a variety of tissues and is expressed in the stroma of various forms of cancer. Decorin has gained rec...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-48457-6_2
更新日期：2020-01-01 00:00:00
abstract：:Laser diffraction and photomicrography have been used to monitor sarcomere length changes in single muscle fibres of the frog, at long sarcomere lengths, during fixed end tetani. In the central 90% of all fibres, changes in sarcomere length were consistently less than 0.25 micron. Sarcomere length showed an initial ra...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-4703-3_42
更新日期：1984-01-01 00:00:00
abstract：:The Saccharomyces cerevisiae branchpoint binding protein (BBP) is a 53 kDa pre-mRNA processing factor with characteristic STAR/GSG protein organization. This includes a central RNA binding site composed of an extended Type I KH domain with an adjacent QUA2 motif. Downstream of KH-QUA2 are two CCHC-type zinc knuckles a...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：
更新日期：2010-01-01 00:00:00
abstract：:Here we propose a model of a peripheral axon with a great deal of autonomy from its cell body-the autonomous axon-but with a substantial dependence on its ensheathing Schwann cell (SC), the axon-SC unit. We review evidence in several fields and show that (i) axons can extend sprouts and grow without the concurrence of...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-40764-7_9
更新日期：2016-01-01 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：:Nurses are a pivotal component of the translational research movement and apply scientific discoveries to the healthcare and clinical practice fields. Biobanking is also an important factor in furthering translational research by providing biospecimens and related clinical data to the research community. The effective...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-20579-3_12
更新日期：2015-01-01 00:00:00
abstract：:Vascular endothelial cells (ECs) and smooth muscle cells (VSMCs) are constantly exposed to hemodynamic forces in vivo, including flow shear stress and cyclic stretch caused by the blood flow. Numerous researches revealed that during various cardiovascular diseases such as atherosclerosis, hypertension, and vein graft,...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-96445-4_4
更新日期：2018-01-01 00:00:00
abstract：:The structural similarity of cholesterol oxidation products (COP) to native cholesterol and their xenobiotic effects prompt researchers to study the long-term effects of the assimilation of these compounds into our tissues. COP are present in our food system. The level of exposure changes as our food products and our ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：
更新日期：1999-01-01 00:00:00
