Abstract：
:The fine structure of the kidney is studied in the sexually mature male three-spined stickleback after administration of an antiandrogen, cyproterone acetate. Under these conditions, the dedifferentiation of renal tubules is characterized by the same involutive processes as those induced by castration, with the difference that cyproterone acetate only begins to act after 14 days whereas after castration the first signs of involution are visible after 7 days. The ultrastructural modifications affect the nucleoli, the rough endoplasmic reticulum and the Golgi apparatus. They reflect an inhibition of the secretory process. The results obtained demonstrate that administration of cyproterone acetate to male sticklebacks has an inhibitory effect on renal target cells, apparently indistinguishable from the changes induced by lack of male sex hormone, and that this drug may be a valid substitute for castration in fish.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Mourier JPdoi
10.1007/BF00220324keywords:
subject
Has Abstractpub_date
1976-10-13 00:00:00pages
357-66issue
3eissn
0302-766Xissn
1432-0878journal_volume
173pub_type
杂志文章abstract：:Intercellular bridges have been detected in ovarian follicle cells of Drosophila melanogaster. These bridges occur widely between follicle cells of previtellogenic chambers, while, in vitellogenic chambers, they become restricted to the columnar follicle cells. Usually, only one bridge is detectable between adjacent f...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00224931
更新日期：1978-01-31 00:00:00
abstract：:In the stalk-eyed fly Cyrtodiopsis whitei (Diopsidae; Diptera), the relatively long optic nerve develops within the tight lumen of a very short eyestalk. Axonal growth is generally considered in terms of path finding, selective fasciculation, and towing. Physical forces that are necessary for axon lengthening are gene...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-1142-4
更新日期：2005-09-01 00:00:00
abstract：:The cellular localization of renin was examined in the kidneys of some amphibians of the genus Bufo by immunoperoxidase and immunofluorescence techniques with an antiserum to renin isolated from the submandibular gland of the mouse. Immunoreactivity could be demonstrated in the media cells of the afferent arterioles (...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219248
更新日期：1985-01-01 00:00:00
abstract：:The globiferous pedicellariae of Psammechinus miliaris are described. Two fixation methods giving minimal distortion and rapid tissue hardening were adapted for soft tissue preparation for scanning electron microscopy. The pedicellarial valves are covered by a microvillous epithelium. The outer valve epithelial microv...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00220184
更新日期：1975-10-13 00:00:00
abstract：:The technique of cobalt sulfide precipitation combined with Timm's sulfide-silver method for intensification of heavy metals was used to delineate the retino-hypothalamic projection of the rat. Freshly isolated rat brains were dissected and a solution of cobaltous chloride was applied to one of the cut optic nerves. S...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219728
更新日期：1976-04-28 00:00:00
abstract：:The distribution of estradiol-concentrating cells in the pituitary of the platyfish, Xiphophorus maculatus, is studied after the injection of 3H estradiol-17 beta by thaw-mount autoradiography. Autoradiograms prepared 2-8 h after the injection show nuclear concentration of radioactivity in certain cells of the rostral...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00234188
更新日期：1979-05-25 00:00:00
abstract：:Neurotrophins signal via a dual-receptor system comprising receptor tyrosine kinases, the Trks, and a tumor necrosis factor (TNF) receptor like molecule, p75. Interest in these receptors was spurred on by the finding that they are employed by their neurotrophin ligands to activate opposing cellular mechanisms. Signall...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s004410100378
更新日期：2001-08-01 00:00:00
abstract：:Intercellular bridges (IBs) connecting the cytoplasms of a defined type of defective germ cell division ("arrested mitoses") in male and female gonads of the immature golden hamster were studied by electron microscopy. In both sexes, such cells appear at the time when germ cells switch from mitotic proliferation to th...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0523-1
更新日期：2002-04-01 00:00:00
abstract：:Changes in the ultrastructure of the toad epidermis during the moulting cycle are described on the basis of 17 skin preparations fixed in consecutive phases of the cycle. Our previous light microscopical findings that morphological changes are mainly restricted to a short period prior to and after shedding are confirm...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00221703
更新日期：1975-06-24 00:00:00
abstract：:In the present study, the effect of LHRH on the process of protein and/or peptide secretion characterized by the formation of granular vesicles has been studied by means of an in vitro system in the pinealocytes of three different species of rodents. LHRH has a strong influence on the activity of this process. However...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216426
更新日期：1983-01-01 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 development of the heterophil granulocyte in the bone marrow of the rat is described, and an electron-microscopical analysis of the changes in the cytoplasm as well as in the granule population in several stages of maturation is reported. Three types of granule originate in consecutive stages of heterophil maturat...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00211466
更新日期：1983-01-01 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 intrapancreatic localization and the effects on basal and stimulated insulin secretion of neuropeptide Y (NPY) were investigated in the mouse. Immunocytochemistry showed NPY to be confined to intrapancreatic nerve fibers mainly associated with blood vessels. Fine varicose NPY fibers were also detected in the exocr...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF01239960
更新日期：1987-04-01 00:00:00
abstract：:The vascularization of the hypothalamo-adenohypophysial region of the toad Bufo bufo (L.) (Amphibia, Anura) was studied by means of light- and scanning electron microscopy. Special attention was given to the portal vascular system of the median eminence and the pars distalis. Course and arrangement of these vessels ar...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223268
更新日期：1975-09-16 00:00:00
abstract：:Western Blot and immunohistochemical studies were conducted in the sea pansy Renilla koellikeri, a representative of the earliest multicellular animals with a nervous system, using various antibodies raised against enzymes of the catecholamine biosynthetic pathway. Western blots of sea pansy extracts revealed a protei...
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
abstract：:The fine structural organization of a cortical filament layer in normal locomoting Amoeba proteus was demonstrated using improved fixation and embedding techniques. Best results were obtained after application of PIPES-buffered glutaraldehyde in connection with substances known to prevent the depolymerization of F-act...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215699
更新日期：1982-01-01 00:00:00
abstract：:When stimulated by the feeding of ethylenethiourea for a period of 6 months, dog thyroid glands increased to approximately 30 times their normal size. Not only follicular cells but also C cells had hyperplastic and hypertrophic features, compared with normal controls there was in the C cells a marked decrease in secre...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00214684
更新日期：1982-01-01 00:00:00
abstract：:The immunocytochemical localization of bovine oviduct-specific glycoproteins was investigated by light and electron microscopy. Using monoclonal antibodies (MAbs) specific for bovine oviductal glycoproteins, 3 regions (fimbriae, ampulla, and isthmus) of the epithelium in the bovine oviduct we studied during the follic...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00327983
更新日期：1993-10-01 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：:In previous studies the differentiation of the epithelium in the human hard palate has been described stereologically using parameters expressed per unit tissue volume. Since single epithelial cells represent the true biological units of this tissue, it became necessary to estimate the absolute size of such cells in o...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00216577
更新日期：1981-01-01 00:00:00
abstract：:The distribution of FMRFamide-like immunoreactive cell bodies and fibers in the nervous system of the earthworm Lumbricus terrestris has been studied by means of immunocytochemistry. The cerebral ganglion contains 150-170 immunoreactive nerve cells that are organized into six major groups in the rostral and five major...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050843
更新日期：1997-06-01 00:00:00
abstract：:The extracellular matrix is involved in various morphogenetic processes which are accompanied by changes in its physicochemical properties and spatial organization. In the adult brain it contributes to cellular communication and the regulation of neuronal activity. The present study deals with the postnatal appearance...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050790
更新日期：1997-04-01 00:00:00
abstract：:There is general consensus that enteroendocrine cells, EEC, containing the enteric hormone cholecystokinin (CCK) are confined to the small intestine and predominate in the duodenum and jejunum. Contrary to this, EEC that express the gene for CCK have been isolated from the large intestine of the mouse and there is evi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2612-1
更新日期：2017-08-01 00:00:00
abstract：:In an attempt to determine the neural control of pancreatic D cells, the pancreatic islets of the domestic fowl were examined electron microscopically from 1 to 28 days after abdominal vagotomy. Exocytotic release of many secretory granules from D cells occurred one day after vagotomy. Rough endoplasmic reticulum deve...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233732
更新日期：1980-01-01 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：:Using specimens of human submandibular glands, we have investigated in vitro the morphological modifications induced by clozapine, a dibenzodiazepine derivative that is used in psychotic patients and that provokes hypersalivation, a side-effect of therapy. The effects of the drug, used alone or in combination with car...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-0149-1
更新日期：2006-05-01 00:00:00
abstract：:Cholinergic neurons have been revealed in the enteric nervous system by functional and biochemical studies but not by antibodies that provide excellent localisation of the synthesising enzyme, choline acetyltransferase (ChAT), in the central nervous system. In order to determine whether a newly described peripheral fo...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-002-0652-6
更新日期：2003-01-01 00:00:00
abstract：:The excretory system of Macrobiotus richtersi consists of one dorsal and two lateral components and shows a high degree of structural complexity. In each of these a tricellular external lobe and a column can be distinguished, the two parts being connected distally. The surface of the lobe cells is increased by deep ba...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00239339
更新日期：1980-01-01 00:00:00
abstract：:In the present study, we used ultrastructural cytochemistry to analyze the distribution of nuclear and cytoplasmic nucleic acids and polysaccharides, and electron spectroscopic imaging to map the element phosphorus in immature erythroid cells taken from two amphibians, the diploid Bufo ictericus and the tetraploid Odo...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00305791
更新日期：1994-10-01 00:00:00
