Abstract：
:Male rats kept on a standard diet were treated either with progesterone or testosterone by a single intramuscular injection of preparations which are slowly absorbed and metabolized. The rats were anaesthetized 24 h after application of the hormones, perfused with glutaraldehyde, and the parathyroid glands prepared for electron microscopy. Morphometric analysis revealed that both progesterone and testosterone provoked (1) an increment in nuclear and cell volume and a concomitant increment in cell surface area, and (2) an increment in surface area of rough endoplasmic reticulum by 42% and 49%, and of the Golgi complex by 85% and 63%, respectively. Previously, we had found that oestradiol treatment led to a similar response in parathyroid cells. The conclusion is thus drawn that male and female sex hormones induce membrane synthesis resulting in an enhanced capacity for parathyroid hormone secretion since RER and Golgi complex are concerned with this secretion. It is considered probable that sex hormones have the ability fundamentally to modulate secretory activity in parathyroid cells.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Brunner M,Schraner EM,Wild Pdoi
10.1007/BF00318797keywords:
subject
Has Abstractpub_date
1992-05-01 00:00:00pages
283-6issue
2eissn
0302-766Xissn
1432-0878journal_volume
268pub_type
杂志文章abstract：:The genes encoding transmembrane glycoproteins of the cadherin family, i.e., the Ca(2+)-dependent cell-cell adhesion molecules, are typically expressed in cell-type- or cell-lineage-specific patterns. One of them, vascular endothelial (VE)-cadherin, is widely considered to be specific for vascular endothelia in which ...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-008-0718-1
更新日期：2009-01-01 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：:Transmission electron microscopy was used to study the effects of proteolytic enzymes (collagenase, trypsin, clostripain), the calcium chelator ethyleneglycol-bis-(beta-aminoethyl ether) N,N,N',N'-tetraacetic acid (EGTA), and the calcium ionophore A 23187 on substrate adhesion and fine structure of chondrocytes and fi...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00228443
更新日期：1984-01-01 00:00:00
abstract：:The application of autologous dermal fibroblasts has been shown to improve burn wound healing. However, a major hurdle is the availability of sufficient healthy skin as a cell source. We investigated fetal dermal cells as an alternative source for cell-based therapy for skin regeneration. Human (hFF), porcine fetal (p...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-015-2293-6
更新日期：2016-04-01 00:00:00
abstract：:Intra-arterial injections of synthetic double-stranded RNA (polyinosinic:polycytidylic acid, PIPC) at a dose of 500 microg/kg evoked pronounced fever in guinea-pigs. PIPC-induced fever could be antagonized by treatment with the non-selective cyclooxygenase (COX) inhibitor diclofenac and was, in part, attenuated by the...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0386-6
更新日期：2007-06-01 00:00:00
abstract：:The responses of non-neuronal cells to the degeneration of neuroblasts were studied in the spinal ganglia of the chick embryo. Reactive changes of the non-neuronal cells were not apparent during the early stage of degeneration of the neuroblast, but during the later stages of degeneration evidence was found suggesting...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00210032
更新日期：1978-06-26 00:00:00
abstract：:Besides its function at cholinergic synapses, acetylcholinesterase (AChE) exerts structural functions on neural differentiation, independent of its enzymatic activity. To elucidate such functions, we have previously heterologously expressed AChE in histotypic retinal reaggregates, revealing strong effects on their his...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410100444
更新日期：2001-11-01 00:00:00
abstract：:With the gallocyanine technique (Wittkowski, Bock and Franken, 1970) Gomori-positive substances of the infundibulum can be stained for light- and electron-microscopic examination. In various mammalian species, the size of Gomori-positive elementary granules in the outer layer is markedly different from that in the inn...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218495
更新日期：1975-11-19 00:00:00
abstract：:More than twenty different enzyme activities of fractions containing dictyosome-like structures (DLS) as a dominant cell component were monitored. Plasma membrane vesicles were a major contaminant of the DLS fractions, which, presumably as a consequence, were enriched somewhat in plasma membrane markers. The lysosomal...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217555
更新日期：1985-01-01 00:00:00
abstract：:The effect of hypothyroidism, induced by 4-propyl-2-thiouracil, on muscle satellite cells in vivo and in vitro, and on postnatal muscle fiber development in the soleus muscle of rats during the first 40 days of postnatal life was analyzed. The proliferative activity of satellite cells was determined by means of bromod...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050682
更新日期：1996-10-01 00:00:00
abstract：:VIP-containing neurons were localized in lungs from dogs, cat, and human subjects by means of the indirect immunofluorescence technique. Nerve fibers and terminals were observed in the smooth muscle layer and glands of airways, and within the walls of pulmonary and bronchial vessels, especially at the medial-adventiti...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00210505
更新日期：1981-01-01 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：:The high affinity IgE receptor on mast cells and basophils is composed of 3 subunits, alpha, beta and gamma. A polyclonal antibody was raised in rabbits to a 13 amino acid synthetic peptide corresponding to the amino terminal portion of the gamma subunit. The antiserum was screened using Western blots of solubilized R...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050575
更新日期：1996-04-01 00:00:00
abstract：:The innervation of the rat anococcygeus muscle has been investigated ultrastructurally following fixation with a modified chromaffin reaction for the demonstration of biogenic amines (Tranzer and Richards, 1976). Three types of nerve profiles were revealed: (1) 60-70% of the profiles are adrenergic; (2) less than 5% o...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00236418
更新日期：1979-08-01 00:00:00
abstract：:Vitrification of biological specimens in liquid nitrogen can be achieved under high pressure (2,100 bars). This procedure obviates the use of aldehyde fixation and cryoprotection (glycerol). The present work demonstrates its applicability to the freeze-etching of mammalian brain tissue. Freeze-fracture repicas from ra...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00237626
更新日期：1980-01-01 00:00:00
abstract：:Agitation of villi evokes reflexes that affect the motility of the guinea-pig small intestine. NK1 receptor endocytosis was used to investigate the possible involvement of tachykinins acting on neuronal NK1 receptors in these reflexes. Segments of guinea-pig ileum were incubated at 37 degrees C in Krebs physiological ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051032
更新日期：1998-04-01 00:00:00
abstract：:The chemical nature of the thickened plasma membrane of cornified cells in stratified squamous epithelium was investigated in comparison with that in noncornified epithelium. Localizations of transglutaminase, molecular weight 92,000 daltons, and detection of epidermal cysteine proteinase inhibitor were effected with ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215516
更新日期：1987-08-01 00:00:00
abstract：:Biocytin, recently introduced in neuroanatomical studies, was used as a retrograde tract tracer in combination with immunofluorescence in order to analyse the neurochemical characters of some central neuronal projections to the pars intermedia in two amphibian species, the anuran Rana esculenta and the urodele Trituru...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050754
更新日期：1997-02-01 00:00:00
abstract：:The prothoracicotropic hormone (PTTH), which stimulates ecdysteroid synthesis in the prothoracic glands, is produced, in the dorso-lateral protocerebrum of Manduca sexta, by paired peptidergic neurons, the lateral neurosecretory cell group III (L-NSC III). Our study revealed ultrastructural features of L-NSC III, iden...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00303082
更新日期：1994-07-01 00:00:00
abstract：:The gene encoding H1t, a testicular variant of histone H1, is expressed in mammals during spermatogenesis. Northern blot and in situ hybridization has detected H1t mRNA only at the stage of pachytene spermatocytes. We have extended this analysis to more sensitive approaches and demonstrate, by RNase protection and ele...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410050986
更新日期：1998-01-01 00:00:00
abstract：:The effects of dexamethasone on the ability of cells enzymatically isolated from 21-day fetal rat calvaria to produce cartilage in vitro has been investigated. Primary cultures of single-cell suspensions of rat calvaria were grown for up to 28 days in vitro in alpha-minimal essential medium containing 15% fetal bovine...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00224728
更新日期：1989-04-01 00:00:00
abstract：:In Nassarius reticulatus the nuclei and nucleoli undergo important morphological changes from the zygote to the 16-cell stage. In the zygote and in the trefoil (2-cell) and 4-cell stage, several agranular, fibrillar nucleolus-like bodies 1 mum diameter are present in the interphase nucleus. Granular nucleoli first app...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00215313
更新日期：1976-05-13 00:00:00
abstract：:Despite the common structure of vertebrates, the development of the vertebral column differs widely between teleosts and tetrapods in several respects, including the ossification of the centrum and the function of the notochord. In contrast to tetrapods, vertebral development in teleosts is not fully understood, parti...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-016-2404-z
更新日期：2016-10-01 00:00:00
abstract：:The effect of a physiological dose of vitamin C (100 microg/ml) on goat articular cartilage chondrocytes cultured in an alginate matrix and subjected to static pressurization of 2.4 MPa was investigated. Biochemical analyses of DNA, glycosaminoglycan (GAG), collagen and protease activity were carried out in various ma...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-008-0666-9
更新日期：2008-10-01 00:00:00
abstract：:Administration of Concanavalin A (Con A) to cultured skin fibroblasts derived from chick embryos at two developmental stages produce variations in the relative concentration of individual glycosaminoglycan (GAG) secreted by the cells. This effect is different: at 7 days (increase of hyaluronic acid and dermatan sulpha...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00217295
更新日期：1984-01-01 00:00:00
abstract：:Seasonal changes have been detected in the ultrastructure of brown adipose tissue (BAT) of the common shrew, Sorex araneus (a true nonhibernator) living under natural conditions and collected at the time when the most representative growth phase of the animal for the given season could be expected. In summer and autum...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233501
更新日期：1981-01-01 00:00:00
abstract：:Long-term in vitro culture (16 days) of caprine ovarian cortical tissue was performed to test the effect of FSH and IGF-I on the viability and development of preantral follicles and mRNA expression for FSH and IGF-I receptors. Fragments were cultured in α-MEM(+) alone or supplemented with different combinations of FSH...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1498-1
更新日期：2012-12-01 00:00:00
abstract：:Urocortin (UCN) is a 40-amino-acid peptide and a member of the corticotropin-releasing hormone (CRH) family, which includes CRH, urotensin I, sauvagine, UCN2 and UCN3. The biological actions of CRH family peptides are mediated via two types of G-protein-coupled receptors, namely CRH type 1 receptor (CRHR1) and CRH typ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-012-1450-4
更新日期：2012-10-01 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 distribution of luteinizing hormone-releasing hormone (LHRH) was studied in the rat and mouse brain by means of light and electron microscopic immunohistochemistry using the peroxidase-antiperoxidase method. An immunoreactive product to LHRH antiserum was found near the blood vessels of the vascular organ of the l...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233914
更新日期：1979-03-19 00:00:00
