Abstract：
:Neuronal differentiation is characterized by stereotypical sequences of membrane channel and receptor acquisition. This is regulated by the coordinated interactions of a variety of developmental mechanisms, one of which is the control by steroid hormones. We have used the metamorphosis of the holometabolous insect, Manduca sexta, as a model to study effects of 20-hydroxyecdysone on the maturation of thoracic neuron membrane channel expression. To test for direct hormone action, neurons were dissociated into primary cell culture on the first day of pupal life. In situ hybridization demonstrated that the amount of expression of the acetylcholine receptor alpha subunit, MARA1, was not affected by 20-hydroxyecdysone. Immunocytochemistry with an antibody directed against the SP19 segment of voltage-gated sodium channels revealed no effect of 20-hydroxyecdysone treatment during the first 6 days in culture. SP19 sodium channel protein was evenly distributed along all neurites. In contrast, after 8 days in culture, 20-hydroxyecdysone increased the amount of SP19 protein expression and strongly affected its distribution in differentiating neurons. In the presence of 20-hydroxyecdysone, patches of high densities of SP19 sodium channel protein were found in growth cones close to the base of filopodia. This is a further step toward unraveling the blend of membrane proteins under the control of steroids during the development of the central nervous system of postembryonic Manduca. Our results, taken together with previous studies, indicate that 20-hydroxyecdysone does not affect the expression of potassium membrane current or of the nicotinic acetylcholine receptor but instead regulates the amplitude of the calcium membrane current and the amount and distribution of SP19 sodium channel protein.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Börner J,Puschmann T,Duch Cdoi
10.1007/s00441-006-0175-7keywords:
subject
Has Abstractpub_date
2006-07-01 00:00:00pages
175-87issue
1eissn
0302-766Xissn
1432-0878journal_volume
325pub_type
杂志文章abstract：:Extracellular matrix (ECM) plays a dynamic role during tissue development and re-growth. Body part regeneration efficiency relies also on effective ECM remodelling and deposition. Among invertebrates, echinoderms are well known for their striking regenerative abilities since they can rapidly regenerate functioning com...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03201-0
更新日期：2020-09-01 00:00:00
abstract：:Dental caries is a chronic, infectious, and destructive disease that allows bacteria to break into the dental pulp tissue. As caries-related bacteria invade the human dentinal tubules, odontoblasts are the first line of dental pulp that trigger the initial inflammatory and immune responses. DNA methylation is a key ep...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-019-02993-0
更新日期：2019-06-01 00:00:00
abstract：:The suprachiasmatic nucleus (SCN) contains a biological clock that generates timing signals that drive daily rhythms in behaviors and homeostatic functions. In addition to this pacemaker function, the SCN gates its own sensitivity to incoming signals, which permits appropriate temporal adjustment to achieve synchrony ...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-002-0576-1
更新日期：2002-07-01 00:00:00
abstract：:The effects, on the maternal mammary gland, of diets containing similar lipid percentages but differing in composition of polyunsaturated fatty acids (PUFA) have been assessed in rats during pregnancy and lactation. For this purpose, tuna fish oil (an n-3-PUFA-enriched oil) and corn oil (an n-6-PUFA-enriched oil) were...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1523-4
更新日期：2013-03-01 00:00:00
abstract：:Exposure to maternal diabetes during fetal growth is a risk factor for the development of type II diabetes (T2D) in later life. Discovery of the mechanisms involved in this association should provide valuable background for therapeutic treatments. Early embryogenesis involves epigenetic changes including histone modif...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2583-2
更新日期：2017-06-01 00:00:00
abstract：:The pineal organ of the blind, cave-dwelling fish, Typhlichythyes subterraneous, was examined with both light and electron microscopes. Like the eyes, the pineal in this troglobytic species was found to be regressed. Two cell types, photoreceptor and supportive cells, were described in the pineal epithelium. Although ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233895
更新日期：1978-12-29 00:00:00
abstract：:The ultrastructure and distribution of adherens junctions in the intact adult lens of human, chicken, dove, rat, and rainbow trout were studied with thin-section electron microscopy, using an improved fixation containing a mixture of glutaraldehyde, lysine, and tannic acid. The nature of adherens junctions in the fibe...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00220014
更新日期：1988-10-01 00:00:00
abstract：:Variations in gene expression patterns represent a powerful source of evolutionary innovation. In a rodent living about 70 million years ago, a genomic accident led an immune formyl peptide receptor (FPR) gene to hijack a vomeronasal receptor regulatory sequence. This gene shuffling event forced an immune pathogen sen...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03393-5
更新日期：2021-01-16 00:00:00
abstract：:Box jellyfish have the most elaborate sensory system and behavioural repertoire of all cnidarians. Sensory input largely comes from 24 eyes situated on four club-shaped sensory structures, the rhopalia, and behaviour includes obstacle avoidance, light shaft attractance and mating. To process the sensory input and conv...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0393-7
更新日期：2007-07-01 00:00:00
abstract：:Myogenesis is a complex process in which committed myogenic cells differentiate and fuse into myotubes that mature into the muscle fibres of adult organisms. This process is initiated by a cascade of myogenic regulatory factors expressed upon entry of the cells into the myogenic differentiation programme. However, ext...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1364-1
更新日期：2012-06-01 00:00:00
abstract：:The present study attempts to elucidate the role of TRPV1 cation channel receptor on primary repair in an incision-wounded mouse cornea in vivo. Previous study revealed that blocking TRPV1 suppressed myofibroblast formation and expression of transforming growth factor β1 (TGFβ1) in cultured keratocytes or ocular fibro...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-018-2878-y
更新日期：2018-11-01 00:00:00
abstract：:A reversible breakdown of the blood-aqueous barrier in the iridial processes of rabbits has been induced by arachidonic acid as demonstrated by the passage of horseradish peroxidase at places through the tight junctions. Freeze-fracture images reveal very discontinuous P-face ridges. However, the analysis of complemen...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00213948
更新日期：1986-01-01 00:00:00
abstract：:Correlations between the presence of surface coat and immobilization antigen of Paramecium tetraurelia were studied. Supravital, partial removal of the surface coat resulted in accelerated response of monobacterially and axenically grown cells to the homologous antiserum. Ciliates pretreated with trypsin or pronase (0...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219984
更新日期：1977-07-11 00:00:00
abstract：:We have examined radioautographically the protein synthetic and secretory activity of differentiating odontoblasts and ameloblasts, exposed for 9 h in vitro to various concentrations of colchicine in the presence of 3H-proline. Colchicine impairs the cytodifferentiation of the dental epithelium into ameloblasts and of...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216651
更新日期：1988-06-01 00:00:00
abstract：:By means of single and double immuno-enzyme cytochemical staining techniques, it was shown that the external region of the amphibian median eminence contains separate vasotocinergic and mesotocinergic nerve fibres. Moreover, it was demonstrated that the vasotocinergic fibres also contain neurophysin. In animals in whi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221117
更新日期：1977-02-02 00:00:00
abstract：:The cerebral ganglia of the freshwater snail Lymnaea stagnalis contain two clusters of neurosecretory Caudo-Dorsal Cells (CDC). These cells produce a neurohormone which stimulates ovulation. Ganglion transplantation and quantitative electron microscopy show that neuronal isolation of the cerebral ganglia complex (CCC)...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219720
更新日期：1976-04-28 00:00:00
abstract：:The midgut cells of Tomocerus minor (Insecta, Collembola) were examined with the electron microscope and cytochemically. The midgut epithelium consists of a series of cells characterised by numerous mineral concretions scattered throughout the cytoplasm. Mitochondria are abundant; microvilli are well developed at the ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00236347
更新日期：1979-01-30 00:00:00
abstract：:The colocalization of immunoreactivities to substance P and calcitonin gene-related peptide (CGRP) in nervous structures and their correlation with other peptidergic structures were studied in the stellate ganglion of the guinea pig by the application of double-labelling immunofluorescence. Three types of fibre were d...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318563
更新日期：1993-06-01 00:00:00
abstract：:The insect midgut epithelium represents an interface between the internal and the external environment and it is the almost unique epithelial tissue by which these arthropods acquire nutrients. This epithelium is indeed able to produce digestive enzymes and to support vectorial transport of small organic nutrients, io...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-019-03076-w
更新日期：2019-09-01 00:00:00
abstract：:The termination of intrafusal muscle fibres was studied in muscle spindles of the tenuissimus muscle of the Chinese hamster. Most nuclear chain fibres terminated within the spindle capsule. The nuclear bag- and nuclear chain fibres that extended beyond the limit of the spindle capsule terminated in the endomysial conn...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218663
更新日期：1983-01-01 00:00:00
abstract：:In an ultrastructural study on the spermiogenesis of the rainbow trout (Salmo gairdneri R.) four spermatogenetic stages were identified. In young round spermatids, the nuclear chromatin was first heterogeneous (euchromatin and heterochromatin). Subsequently, it became more homogeneous and started to condense in the fo...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00238295
更新日期：1983-01-01 00:00:00
abstract：:Epidermal septate junctions of Nereis sp. and Cirriformia sp. fixed with OsO4 or glutaraldehyde/OsO4 display variable structure in electron micrographs. In transverse section the septa are often indistinct and obscured by opaque material that fills the junctional cleft. Septa (spaced at 180--280 A) are more clearly de...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00222150
更新日期：1976-10-22 00:00:00
abstract：:Frozen sections of growing terminal follicles of the locust ovary were incubated with an ecdysteroid-specific rabbit antibody and the bound antibody visualised by the use of FITC-labelled goat-anti-rabbit antiserum. A bright fluorescence was seen in the cytoplasm of the follicle cells in terminal follicles with a leng...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00220391
更新日期：1978-11-20 00:00:00
abstract：:We chose synaptic terminals of rat rod bipolar cells as a model system to study activity-related changes in the overall morphology and the fine structure of synaptic sites. Using confocal laser scanning microscopy in conjunction with three-dimensional reconstruction and electron microscopy, we examined the effect of l...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051174
更新日期：1998-11-01 00:00:00
abstract：:The distribution and structure of the ureteric nerves in a small series of mammals was compared with that previously demonstrated in the rat. There was marked interspecies variation in the extent to which the nerves penetrated the wall of the ureter and in the degree of development of the deep submucous plexus. In ani...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225768
更新日期：1975-07-23 00:00:00
abstract：:Caprine preantral follicles within ovarian fragments were cryopreserved in the absence or presence of 0.5 M sucrose with or without 1 M dimethyl sulfoxide and/or 1 M ethylene glycol (EG). After being thawed, they were washed in minimum essential medium with or without 0.3 M sucrose. Histological analysis of follicle i...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-006-0193-5
更新日期：2006-09-01 00:00:00
abstract：:Placenta-derived stem cells (PDSCs) have gained interest as an alternative source of stem cells for regenerative medicine because of their potential for self-renewal and differentiation and their immunomodulatory properties. Although many studies have characterized various PDSCs biologically, the properties of the sel...
journal_title：Cell and tissue research
pub_type： 临床试验,杂志文章
doi：10.1007/s00441-011-1249-8
更新日期：2011-10-01 00:00:00
abstract：:The bursa of Fabricius of the chicken is known to be both a primary lymphoid organ and a secondary lymphoid tissue. Bursal follicles are equipped with antigen-trapping follicle-associated epithelium. However, bioactive antigens such as protein and bacteria have not been detected in the bursal parenchyma. By immunopero...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-013-1701-z
更新日期：2013-12-01 00:00:00
abstract：:The production of nerve growth factor (NGF) in peripheral organs may play a role in the pathophysiology of hypertension and in obstructive disorders of the bladder outlet. We have been examining the cellular processes of NGF delivery and secretion in smooth muscle. NGF secretion from vascular smooth muscle cells (VSMC...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050861
更新日期：1997-07-01 00:00:00
abstract：:Among heterogeneous S100β-protein-positive (S100β-positive) cells, star-like cells with extended cytoplasmic processes, the so-called folliculo-stellate cells, envelop hormone-producing cells or interconnect homophilically in the anterior pituitary. S100β-positive cells are known, from immunohistochemistry, to emerge ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-015-2256-y
更新日期：2016-02-01 00:00:00
