Abstract：
:The papillary muscle of the cat heart's right ventricle has not been studied previously with quantitative ultrastructural techniques despite its wide use for functional studies. This tissue was perfusion-fixed, processed for electron microscopy, and morphometric techniques were used to assess the ultrastructural characteristics of the papillary muscle as well as the working myocardial cells. The results of this study were that 73.5% of the papillary muscle was composed of muscle cells, 9.7% of blood vessels, and the remainder of interstitial connective tissue. In the muscle cell the volume fraction of mitochondria was 17.3%, that of myofibrils was 49.8%, and that of the nucleus was 2.0%. The mitochondria to myofibrils ratio was 0.36 and the surface to volume ratio was 0.309. In a quantitative ultrastructural comparison of perfusion and immersion fixed tissue it was found that significant differences in the volume density of the blood vessel lumen existed between the two groups. In addition, there were significant differences in the volume fraction of mitochondria and nucleus between perfusion-fixed and immersion-fixed muscle cells. A concurrent significant decrease between the two groups was also found for the ratio of mitochondria to myofibrils. The perfusion-fixed tissue can be considered to provide only normal baseline data for the papillary muscle of the right ventricle. These data are important as they can be used in future structure-function studies on normal and pathological heart tissue.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Marino TA,Houser SR,Martin FG,Freeman ARdoi
10.1007/BF00216200subject
Has Abstractpub_date
1983-01-01 00:00:00pages
543-52issue
3eissn
0302-766Xissn
1432-0878journal_volume
230pub_type
杂志文章abstract：:Periodontal ligament (PDL) stem cell properties are critical in the periodontal tissue regeneration for periodontitis. Previously, we have demonstrated that cigarette smoking attenuates PDL-derived stem cell (PDLSC) regenerative properties. Here, we report the findings on the regenerative properties of human PDLSCs wi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03176-y
更新日期：2020-07-01 00:00:00
abstract：:PRDM1 (PR domain containing 1) is a transcriptional repressor that has been identified in various species and is crucial for cell growth, differentiation and development. However, the expression pattern and role of PRDM1 in development has not been sufficiently established in birds. We therefore investigate the spatio...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-014-1804-1
更新日期：2014-05-01 00:00:00
abstract：:Proteins participating in vesicular docking and fusion have been identified in the nervous system. Such proteins appear to be important for the molecular regulation of exocytosis also in non-neuronal cells. The enterochromaffin-like (ECL) cells of the gastric acid-secreting (oxyntic) mucosa secrete histamine and chrom...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050960
更新日期：1997-12-01 00:00:00
abstract：:Prolonged secretory stimulation of the exocrine pancreas in the rat by in vivo infusion of caerulein leads to a rapid degranulation of the organ associated with a progressive reduction in the size of the zymogen granules. During the first six to twelve hours of stimulation Golgi complexes are enlarged and several stru...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00224474
更新日期：1976-01-28 00:00:00
abstract：:The thyroid cells of the cream hamster, characterized by abundance of microtubules and stratification of the organelles, undergo a particular evolution when the animals grow older. These changes are characterized by an increase of the number of lysosomes which in extreme cases become so prominent that they occupy the ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215124
更新日期：1976-02-06 00:00:00
abstract：:The larval stage of Polypodium hydriforme is planuliform and parasitic inside the growing oocytes of acipenserid fishes. The larva has inverted germ layers and a special envelope, the trophamnion, surrounding it within the host oocyte. The trophamnion is a giant unicellular provisory structure derived from the second ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00237977
更新日期：1980-01-01 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：:Morphological changes in the disconnected neuro-intermediate lobe were studied in the lizard, Anolis carolinensis from the 2nd to the 14th post-operative day using a threefold aldehyde fixative (Rodríguez, 1969). Two phases of colour change capacity were exhibited: Phase I started immediately after the transection, la...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00237724
更新日期：1979-06-08 00:00:00
abstract：:The ultrastructure of the dermal papulae of a starfish (Asterias rubens) is consistent with a respiratory function. The present study has shown no regions specialized for excretory mechanisms. The papulae consist of an outer ectodermal epithelium of sensory, support and gland cells and a small basiepithelial nerve ple...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00229616
更新日期：1978-03-13 00:00:00
abstract：:The ultrastructure of corpora lutea obtained during the preimplantation implantation and early post-implantation periods has been studied in 20 western spotted skunks. Fine structure of granulosa lutein cells was correlated with progesterone levels. The corpus luteum of the prolonged (7 month) preimplantaion period co...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218972
更新日期：1975-12-02 00:00:00
abstract：:The analysis of myenteric neurons is becoming increasingly important for the assessment of enteric nervous system injury and degeneration occurring in motor disorders of the gut. Limited information is presently available on the quantitative estimation of myenteric neurons and glial cells in paraffin-embedded colonic ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-009-0770-5
更新日期：2009-05-01 00:00:00
abstract：:Intracellular sporozoan parasites invade the host cell through the invagination of the plasma membrane of the host and a vacuole is formed which accommodates the entering parasite. The vacuole may disappear and the invaginated membrane of the host then becomes closely apposed to that of the parasite's own membrane. As...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219605
更新日期：1976-06-28 00:00:00
abstract：:The glial cell line-derived neurotrophic factor (GDNF) family ligands (GFLs) comprise a group of four homologous and potent growth factors that includes GDNF, neurturin (NRTN), artemin (ARTN), and persephin (PSPN). The survival, growth, and mitotic activities of the GFLs are conveyed by a single receptor tyrosine kina...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03235-4
更新日期：2020-10-01 00:00:00
abstract：:We report here on cholinergic neurons in the rat hippocampal formation that were identified by immunocytochemistry employing a monoclonal antibody against choline acetyltransferase (ChAT), the acetylcholine-synthesizing enzyme. In general, ChAT-immunoreactive cells were rare, but were observed in all layers of the hip...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215891
更新日期：1986-01-01 00:00:00
abstract：:In the central nervous system of the male domestic flow, metenkephalin (ENK) immunoreactive perikarya and fiber tracts as well as extensive but sharply delimited fiber networks were visualized by means of the PAP technique. The most striking results were: (1) The demonstration of an association of ENK-containing struc...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00236920
更新日期：1980-01-01 00:00:00
abstract：:Immunohistochemical localization of luteinizing hormone-releasing hormone (LH-RH), during different phases of the estrus cycle, in the preoptic, suprachiasmatic and arcuate nuclei, and in the OVLT of rats, with special emphasis on the ependymal cells, was studied by light, fluorescent and electron microscopy, by using...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221371
更新日期：1976-10-06 00:00:00
abstract：:The spleen of the oriental fire-bellied toad, Bombina orientalis, consists of well-developed white pulp, separated from the lymphocytic marginal zone by the connective tissue boundary layer. Injection of peroxidase-conjugated rabbit anti-peroxidase revealed that these immune complexes were localized on the surface of ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00297553
更新日期：1993-01-01 00:00:00
abstract：:The stem cells with their distinct ability of self-renewal and differentiation are considered an innovation in wound healing. However, there is lack of studies comparing the differential effect of the type and administration route of stem cells in the wound healing context. Thus, the current study has been designed to...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-018-2879-x
更新日期：2018-11-01 00:00:00
abstract：:Trichoplax, a member of the phylum Placozoa, is a tiny ciliated marine animal that glides on surfaces feeding on algae and cyanobacteria. It stands out from other animals in that it lacks an internal digestive system and, instead, digests food trapped under its lower surface. Here we review recent work on the phenotyp...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-019-03057-z
更新日期：2019-09-01 00:00:00
abstract：:Using in vitro autoradiography, binding sites of 125I-ANP (atrial natriuretic peptide) were localized in the rat placenta, visceral yolk sac, and decidua at 16, 18, and 20 days of gestation. There was diffuse binding over the labyrinthine region of the placenta and an intense binding over the decidual gland and viscer...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00302744
更新日期：1993-05-01 00:00:00
abstract：:Rat quiescin/sulphydryl oxidase (rQSOX) introduces disulphide bridges into peptides and proteins with the reduction of molecular oxygen to hydrogen peroxide. Its occurrence has been previously highlighted in a wide range of organs by reverse transcription-polymerase chain reaction (RT-PCR) and Northern blot analyses, ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-0043-x
更新日期：2006-01-01 00:00:00
abstract：:N-CAM180, the molecular form of the three neural cell adhesion molecules (N-CAM) with the largest cytoplasmic domain, is accumulated at sites of cell-cell contact (cell bodies, neurites, growth cones) in cultures of neuroblastoma and cerebellum. At these sites the cytoskeleton-membrane linker protein brain spectrin an...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00214676
更新日期：1987-10-01 00:00:00
abstract：:The amniotic epithelium constitutes a diffusion barrier controlling the passage of solutes and water between the amniotic cavity and maternal circulation. With the present immunocytochemical approach, we have shown that several major components of the cyto-skeleton, i.e., actin, alpha-actinin, spectrin and ezrin, are ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318194
更新日期：1991-11-01 00:00:00
abstract：:With an indirect immunofluorescence technique and an antiserum raised against synthetic LHRH, immunofluorescent granules were observed in fine radially oriented fibres in the palisade layer of the zoma externa in both the anterior and the posterior divisions of the median eminence in the greenfinch. There was no speci...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223264
更新日期：1975-09-16 00:00:00
abstract：:Microinjection of DNAase I, which is known to form a specific complex with G-actin, induces characteristic changes in cytoplasmic streaming, locomotion and morphology of the contractile apparatus of A. proteus. Light microscopical studies show pronounced streaming originating from the uroid and/or the retracting pseud...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00236075
更新日期：1979-07-17 00:00:00
abstract：:In the pond snail Lymnaea stagnalis, the growth regulating system consists of (1) about 200 neuroendocrine light green cells, located in four clusters in the cerebral ganglia, and (2) the paired canopy cells, located in the lateral lobes. These cells express genes encoding the molluscan insulin-related peptides (MIPs)...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00384739
更新日期：1992-07-01 00:00:00
abstract：:Adult rat chromaffin cells may proliferate or extend neurites when stimulated by nerve growth factor (NGF) but their response is predominantly proliferative, making them a unique model for studying how mitogenic specificity is achieved. We examined contributions of the NGF receptors trk and p75 and of the major NGF si...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051209
更新日期：1999-01-01 00:00:00
abstract：:The acrosome is a special organelle that develops from the Golgi apparatus and the endolysosomal compartment in the spermatids. Centromere protein E (CENP-E) is an essential kinesin motor in chromosome congression and alignment. This study is aimed at investigating the roles and mechanisms of kinesin-7 CENP-E in the f...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03341-3
更新日期：2020-11-25 00:00:00
abstract：:Scanning electron microscopy was used to investigate the morphological changes of the tail musculature of the metamorphosing anuran tadpole, attention being focused on phagocytosis by macrophages. Muscle fibers were stained en bloc with silver and freeze-fractured during dehydration, or torn after drying. Samples were...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00214574
更新日期：1985-01-01 00:00:00
abstract：:The molecular cloning of a cDNA fragment synthesised from rat duodenal mRNA coding for cholecalcin (calbindin), a 9000 Mr vitamin D-induced calcium-binding protein (CaBP), has been previously described. DNA/RNA hybridisation assays have been used to examine CaBP mRNA production in the uterine horns and duodena of preg...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216546
更新日期：1987-01-01 00:00:00
