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  • 1
    Electronic Resource
    Electronic Resource
    Alpha-lactalbumin-like Proteins in the Male Reproductive Tract (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 438 (1984), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1984.tb38271.x
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of Substrate on the Shape of Sertoli Cells in Vitroa (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 438 (1984), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1984.tb38303.x
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  • 3
    Electronic Resource
    Electronic Resource
    Further Observations on the Microfilament Bundles of Sertoli Cell Junctional Complexes (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 438 (1984), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1984.tb38311.x
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  • 4
    Electronic Resource
    Electronic Resource
    THE TIME REQUIRED FOR MATERIALS INJECTED INTO THE RETE TESTIS TO REACH POINTS IN THE CAPUT EPIDIDYMIS OF THE RAT AND OBSERVATIONS ON THE ABSORPTION OF CATIONIC FERRITIN (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 383 (1982), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1982.tb23192.x
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  • 5
    Electronic Resource
    Electronic Resource
    CYTOPLASMIC FILAMENTS IN FETAL LEYDIG CELLS (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 383 (1982), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1982.tb23214.x
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  • 6
    Electronic Resource
    Electronic Resource
    Regulation of c-fos mRNA expression in Sertoli cells by cyclic AMP, calcium, and protein kinase C mediated pathways (1996)
    Springer
    Molecular and cellular biochemistry 156 (1996), S. 43-49 
    Details
    ISSN: 1573-4919
    Keywords: follicle-stimulating hormone ; c-fos ; Sertoli cell ; testis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The role of second messenger pathways, cyclic AMP, calcium, and protein kinase C (PKC) in the transcriptional regulation of c-fos protooncogene expression in rat Sertoli cells was investigated. c-fos expression was monitored by Northern blot analysis. Although the action of FSH on Sertoli cells is considered to be mediated by CAMP, dibutyryl CAMP (dbcAMP), a potent membrane permeable analog of cAMP, induced much less c-fos mRNA expression than FSH (〈50%) suggesting that additional cAMP-independent mechanisms may mediate the effect of FSH on c-fos. Specific intracellular inhibitors of PKC decreased c-fos induction in response to FSH by more than 50%. lonomycin, which increases intracellular free calcium concentration, induced c-fos expression significantly. These data demonstrate that Sertoli cell c-fos mRNA expression is under multifactorial regulation by CAMP, calcium, and PKC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239318
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  • 7
    Electronic Resource
    Electronic Resource
    Characterization and cellular localization of PSG in rat testis (1997)
    Springer
    Molecular and cellular biochemistry 177 (1997), S. 229-237 
    Details
    ISSN: 1573-4919
    Keywords: pregnancy-specific b1-glycoprotein ; cDNA ; rat ; Sertoli ; Leydig ; myoid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract In order to establish the rat testis as a model system for studying the human pregnancy-specific b1-glycoprotein (PSG), expression and cellular distribution of PSG in rat testis were examined. Three partial PSG cDNAs, namely, rnCGM6, rnGCM7, and rnCGM8 were obtained when rat testis cDNA libraries were screened with a human placental PSG cDNA probe. Unlike the human PSGs, the rat PSGs show less nucleotide and amino acid sequence homology among family members. The rat PSGs also have multiple truncated leader sequences followed by immunoglobulin variable-like N domains while human PSGs have a single N domain. Examination of the testis, intestine, kidney, liver, lung, and muscle of male rats by reverse transcription-polymerase chain reaction (RT-PCR) with nested gene-specific primers showed that rnCGM6 was present only in the testis, while rnCGM8 was present in the testis, intestine and lung. On the other hand rnCMG7 was found in all tissues examined. Furthermore, rnCGM7 transcript was present in all somatic cells examined whereas rnCGM6 was predominantly in myoid cells and rnCMG8 in Leydig cells. These results suggest that there is cell-specificity in the expression of PSGs in the rat testis and that the rat testis is a good model for studying the biological activities of the PSGs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006811305616
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of Sertoli cell perinuclear filaments (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Microscopy Research and Technique 20 (1992), S. 219-231 
    Details
    ISSN: 1059-910X
    Keywords: Sertoli cell ; Nucleus ; Cytoskeleton ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: Sertoli cell nuclei are characterized by deep invaginations and, in addition, the orientation of the nuclei with respect to the wall of the seminiferous tubules varies during the cycle of the seminiferous epithelium. These events may be the result of cytoplasmic filaments acting at the level of the nuclear capsule and may represent significant changes in Sertoli cell activity. Thus, a study was performed to characterize the nature of the perinuclear filaments of Sertoli cells in vivo and in vitro.In Sertoli cells in vivo, microtubules and microfilaments were often detected in the perinuclear cytoplasm, and these cytoskeletal components were observed to course either parallel to, or abut at, the nuclear capsule. In Sertoli cells in vitro, the nuclear infoldings are retained and the perinuclear cytoskeleton was shown to contain microtubules, f-actin, and intermediate filaments. A fixation-permeabilization protocol employing tannic acid-saponin was used and it significantly enhanced the preservation of cytoskeletal components. The presence of f-actin was demonstrated by using the S1 fragment of muscle myosin to decorate the microfilaments. Treatment of the cultured cells with either microtubule or f-actin depolymerizing agents had no effect on nuclear shape. Thus, at present, the function of the prominent perinuclear cytoskeletal components remains unknown.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1070200302
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  • 9
    Electronic Resource
    Electronic Resource
    Dual compartment (bicameral) culture: role of basement membrane in epithelial differentiation (1992)
    Springer
    Cell biology and toxicology 8 (1992), S. 55-59 
    Details
    ISSN: 1573-6822
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: A number of years ago we reported that tight junctions between adjacent Sertoli cells subdivide the seminiferous epithelium into two compartments, basal and adluminal, thus forming the morphological basis of the blood-testis barrier. It is now generally believed that the special milieu created by the Sertoli cells in the adluminal compartment is essential for germ cell differentiation. In order to duplicate the compartmentalization that occurs in vivo, Sertoli cells were cultured in bicameral chambers on Millipore filters impregnated with a reconstituted basement membrane. Confluent monolayers of these cells were tall columnar (40–60 µ in height) and highly polarized. These Sertoli cell monolayers established electrical resistance that peaked when the Sertoli-Sertoli tight junctions developed in culture. In addition, the monolayers formed a permeability barrier to 3H-inulin and lanthanum nitrate. The bicameral chambers were utilized in a number of studies on protein secretion, and it was revealed that numerous proteens are secreted in a polarized manner. In another study, hormone- stimulated aromatase activity was measured in Sertoli cells grown on plastic culture dishes, plastic dishes coated with laminin or Matrigel, and in the bicameral chambers. Cell culture on basement membrane substrate decreased the FSH-dependent estrogen production. No estrogen production was observed when the Sertoli cells were cultured in the bicameral chambers. These results are in accord with the hypothesis that differentiated Sertoli cells lose their ability to metabolize androgen to estrogen in an hormone-dependent manner, whereas undifferentiated cells in culture, or in vivo, have a very active FSH-dependent aromatase activity. This bicameral culture system could serve as an important model system to examine various functions of Sertoli cells including interactions of Sertoli cells with germ, Leydig, and myoid cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00130511
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  • 10
    Electronic Resource
    Electronic Resource
    The fine structure of the monkey (Macaca) sertoli cell and its role in maintaining the blood-testis barrierSupported by contract NIH 69-2107 from the National Institute of Child Health and Human Development. (1973)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 175 (1973), S. 639-656 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The monkey Sertoli cell, a tall columnar cell, extends from the basement membrane of the seminiferous epithelium to the tubule lumen. Its nucleus occupies a basal position and reveals extensive nuclear envelope infoldings. A zone of fine filaments, approximately 0.5 μ in thickness, invests the nucleus and appears to prevent other cell organelles from approaching it. The basal cytoplasm is characterized by numerous mitochondria and abundant smooth endoplasmic reticulum. Lipid droplets, 3 to 4 μ in diameter, membrane-limited dense bodies of various shapes and densities, Golgi cisternae, scattered free ribosomes and parallel profiles of rough endoplasmic reticulum are common. The more apical portions of the cell contain longitudinally oriented microtubules and rod-shaped mitochondria, but other organelles are rare.The seminiferous tubules of monkeys are surrounded by three to five circumferentially arranged cells that overlap each other but are separated by intercellular spaces of at least 300 to 400 Å. Tracers such as horseradish peroxidase and lanthanum nitrate injected intravascularly readily pass between the peritubular cells and enter the germinal epithelium. Within the epithelium the tracers outline the spermatogonia and early spermatocytes by permeating the surrounding intercellular spaces. Further penetration toward the tubule lumen is effectively prevented by the occluding tight junctions joining adjacent Sertoli cells. Thus, in monkeys the peritubular epithelioid cells do not impede vascularly introduced tracers from penetrating into the germinal epithelium. The only morphological component of the blood-testis barrier in the macaque appears to be the Sertoli-Sertoli occluding junction.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091750402
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