Abstract：
:In model experiments with the use of horseradish peroxidase (HRP), two pathways of transport of substances to the adenohypophysis were studied, as well as the distribution of the tracer in the latter organ. The first pathway allows the tracer to penetrate from the intercellular milieu of the median eminence below the meningeal sheath covering the adenohypophysis to the surface of the pituitary gland. The second pathway transports the tracer via the capillaries of the hypophysial portal circulation to the interior of the glandular parenchyma. These results show (i) that the meningeal sheath establishes a barrier between the hemal milieu of the pituitary and the hemal milieu of the general circulation, and (ii) that the tracer reaching the adenohypophysis via both routes is found in the intercellular clefts of the glandular parenchyma only to a limited extent. By means of conventional electron microscopy, intercellular contacts between hormone-producing adenohypophysial cells are observed resembling focal tight junctions. Between the membranes of entwined processes of stellate cells, only small maculae adhaerentes are found. Freeze-etch studies on unfixed adenohypophyses reveal zonulae occludentes between the durafacing layers of the meningeal sheath and focal maculae occludentes between parenchymal cells. Additional tissue-culture experiments with adenohypophysial cells directly exposed to HRP reveal a gradual cessation of the labeling process in the intercellular clefts in accord with the observations from the in-vivo experiments, as well as intercellular focal tight junctions between individual hormone-producing cells.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Krisch B,Buchheim Wdoi
10.1007/BF00214248subject
Has Abstractpub_date
1984-01-01 00:00:00pages
439-52issue
2eissn
0302-766Xissn
1432-0878journal_volume
236pub_type
杂志文章abstract：:Intercellular junctions in the young mouse ovary were examined by electron microscopy utilizing freeze-fracture and thin-sectioning techniques. Projections from the granulosa cells adjacent to the oocyte (GI) traverse the zona pellucida and form small gap junctions on the oocyte surface. On the P-face of these cells, ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216881
更新日期：1982-01-01 00:00:00
abstract：:Sudden death in athletes occurs because of the existence of hidden cardiovascular disorders which, during effort, may jeopardize the electrical stability of the heart, triggering ventricular tachycardia and/or fibrillation. Apart from rare conditions of ion channel diseases in the setting of a structurally normal hear...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-012-1398-4
更新日期：2012-05-01 00:00:00
abstract：:The elements Na, Cl and K are distributed heterogeneously in the larval cells of the four Malpighian tubules of Drosophila hydei. Elemental gradients are steeper when they are related to the dry weight in comparison to the weight of water. The high contents of Na, Cl and K in the cytoplasm close to the basal plasma me...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318555
更新日期：1993-06-01 00:00:00
abstract：:Four groups of male rats were exercised for periods of 2, 4, 6, and 8 weeks with controls in each group. As a result of chronic exercise there was an increase in the width of the zona fasciculata of the adrenal cortex. Also, there was an increase in the number and size of the mitochondria, and an increase in the quant...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215882
更新日期：1976-05-06 00:00:00
abstract：:The innervation of the uterus in the ovoviviparous urodele Salamandra salamandra was studied. In whole mount preparations of the thin-walled uterus of pregnant females, a dense adrenergic network was demonstrated using a modified glyoxylic acid fluorescence technique. Based on vesicle type and cytochemical reactivity ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00213797
更新日期：1983-01-01 00:00:00
abstract：:Somatostatin-like immunoreactivity was localized in nerve cell bodies and nerve terminals in the cat coeliac ganglion. Two types of somatostatin-immunoreactive cell bodies were revealed, the first being large (diameter 35 microns), numerous and weakly labelled, whereas the second was considerably smaller (diameter 10....
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00327290
更新日期：1991-03-01 00:00:00
abstract：:Pituitary somatotrops were localized in four species from the genus Oncorhynchus using an antiserum to chum salmon (Oncorhynchus keta) growth hormone. The antiserum cross-reacted specifically with the acidophils in the caudal pars distalis of all species tested. Corroborative immunodiffusion studies were also conducte...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218126
更新日期：1983-01-01 00:00:00
abstract：:The membrane systems of cardiac muscle cells of the euphausiacean Meganychtiphanes norvegica are described. Transverse tubules are found both at the Z-band level (TZ-tubules) and at the H-band level (Th-tubules). Within the sarcomere narrow longitudinal tubules branch off from the TZ-tubules. At the H-band level these...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223109
更新日期：1977-07-15 00:00:00
abstract：:In marine cartilaginous fish, reabsorption of filtered urea by the kidney is essential for retaining a large amount of urea in their body. However, the mechanism for urea reabsorption is poorly understood due to the complexity of the kidney. To address this problem, we focused on elephant fish (Callorhinchus milii) fo...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-015-2234-4
更新日期：2015-12-01 00:00:00
abstract：:The distribution of P2X(2) purine receptor subunit immunoreactivity has been investigated in the mouse gastrointestinal tract. Immunoreactivity occurred in intraganglionic laminar endings (IGLEs) associated with myenteric ganglia throughout the gastrointestinal tract. In the esophagus, IGLEs supplied every myenteric g...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0715-3
更新日期：2003-05-01 00:00:00
abstract：:Adrenal medullary chromaffin cells are derivatives of the neural crest and are widely believed to share a common sympathoadrenal (SA) progenitor with sympathetic neurons. For decades, the adrenal cortical environment was assumed to be essential for channelling SA progenitors towards an endocrine chromaffin cell fate. ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-006-0213-5
更新日期：2006-09-01 00:00:00
abstract：:Marked changes in mice pubic symphysis occur by the end of pregnancy. Tissue remodeling involves a dynamic balance between cell proliferation and programmed cell death as well as changes in the extracellular matrix components. Therefore, it is important to consider both of these cellular behaviors when investigating t...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0463-x
更新日期：2007-10-01 00:00:00
abstract：:We have previously shown that the chromogranin A (CgA)-derived peptide catestatin (CST: hCgA352-372) inhibits nicotine-induced secretion of catecholamines from the adrenal medulla and chromaffin cells. In the present study, we seek to determine whether CST regulates dense core (DC) vesicle (DCV) quanta (catecholamine ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-018-2956-1
更新日期：2019-04-01 00:00:00
abstract：:Bovine granulosa cells from 3-7 mm follicles were cultured without anchorage in soft agar/methylcellulose solution for 14 days, with or without 50 ng/ml basic fibroblast growth factor. The granulosa cells divided to form colonies of cells. These were analysed by light and electron microscopy, immunohistochemistry and ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318878
更新日期：1995-12-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0601-4
更新日期：2002-10-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2646-4
更新日期：2017-10-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217176
更新日期：1985-01-01 00:00:00
abstract：:The origin of cobblestone-like polygonal cells (the most numerous in renal glomerular cell culture) remains controversial; they could be either dedifferentiated podocytes or parietal epithelial cells (PECs) of Bowman's capsule. Poor cellular outgrowth from glomeruli devoid of Bowman's capsule (decapsulated glomeruli) ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410100380
更新日期：2001-06-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219771
更新日期：1977-08-26 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225762
更新日期：1975-07-23 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00213820
更新日期：1988-04-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215212
更新日期：1986-01-01 00:00:00
abstract：:An antiserum against the octapeptide Pea-CAH-I, a member of the adipokinetic hormone/red pigment-concentrating hormone family, has been produced for immunocytochemical staining in insects and various other invertebrate species. The anti-Pea-CAH-I serum stains the glandular corpora cardiaca cells of those insect specie...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050601
更新日期：1996-06-01 00:00:00
abstract：:The transient receptor potential (TRP) superfamily comprises a group of non-selective cation channels that have been implicated in both receptor and store-operated channel functions. The family of the classical TRPs (TRPCs) consists of seven members (TRPC1-7). The presence of TRPC1 and TRPC5 mRNA in the brain has prev...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-0004-4
更新日期：2005-11-01 00:00:00
abstract：:The cardiovascular system is the first functional organ in the vertebrate embryo, and many organs start to develop adjacent to cells of the cardiovascular system. Endothelial cells (EC) form the inner cell lining of blood vessels and represent the major cell type that interacts with developing organs. On the one hand,...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-003-0739-8
更新日期：2003-10-01 00:00:00
abstract：:Cytochemical methods for the demonstration of p-nitrophenylphosphatase (p-NPPase) at the electron-microscopic level were applied to avian osteoclasts to elucidate some of the functional differences among ruffled border, other membrane systems, and cellular organelles. The localization of p-NPPase activity occurred in ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218381
更新日期：1986-01-01 00:00:00
abstract：:The spatial and temporal distribution of three peptides, DSK I, DSK II, and DSK 0, encoded by the Drosophila melanogaster drosulfakinin (Dsk) gene, have been examined in the central nervous system. DSK I and DSK II have a -RFamide C-terminus and are structurally similar to sulfakinin peptides; in contrast, DSK 0 conta...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050518
更新日期：1996-01-01 00:00:00
abstract：:Elastic cartilage-derived cells cultured two-dimensionally with FGF2 and corticosteroid produce gel-type masses that become mature cartilage when injected into a subcutaneous pocket. This unique method has previously been clinically applied for treatments of nasal augmentation. However, the components of the gel-type ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0438-y
更新日期：2007-09-01 00:00:00
abstract：:Our findings suggest that nitric oxide (NO) acts as peripheral neuromodulator in locusts, in which it is commonly co-localized with RF-like peptide in neurosecretory cells. We also present the first evidence for NO as a cardio-regulator in insects. Putative NO-producing neurones were detected in locust pre-genital fre...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-006-0188-2
更新日期：2006-08-01 00:00:00
abstract：:Ex-fissiparous planarians produce infertile cocoons or, in very rare cases, cocoons with very low fertility. Here, we describe the features of programmed cell death (PCD) occurring in the hyperplasic ovary of the ex-fissiparous freshwater planarian Dugesia arabica that may explain this infertility. Based on TEM result...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-014-1971-0
更新日期：2014-11-01 00:00:00
