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  • 1980-1984  (2)
  • 1982  (2)
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  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Ultrastructural localization of phosphatases in the testes of the domestic fowl: Acid phosphatase and thiamine pyrophosphatase (1982)
    Springer
    Histochemistry and cell biology 74 (1982), S. 157-169 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary ACPase and TPPase activity has been examined in the germinal epithelium of the testes in the domestic fowl. ACPase activity in spermatogonia and spermatocytes was confined to the Golgi complex. In spermatids ACPase activity was seen in the endoplasmic reticulum and nuclear envelope in the phase I and especially in the phase II (the elongating phase). This activity gradually decreased during the next phase III, and had disappeared in the final phase IV. The membrane body showed ACPase reaction in the small peripheral vacuoles and cisternal structures surrounding large central vacuoles. ACPase was also present in vesicles surrounding the developing tail. Late spermatids showed an abundance of autophagic vacuoles which had a complex array of ACPase positive delimiting membranes. In Sertoli cells ACPase activity was predominant in the lysosomes. TPPase activity was seen in the cisternae of the Golgi complex in spermatogonia and spermatocytes. In spermatids activity was present in the endoplasmic reticulum during the phase II, but it is lost in later stages. The smaller vacuoles and cisternal structures in the membrane body also showed reaction products. According to the present results it is thought likely that the smaller vacuoles and cisternal structures of the membrane body are of endoplasmic reticulum origin. The autophagic vacuoles in spermatids and the lysosomes of Sertoli cells are considered responsible for the degradation of residual bodies cast off by spermatids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00495827
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Energy-dependent lysosomal wrapping mechanism (LWM) during autophagolysosome formation (1982)
    Springer
    Histochemistry and cell biology 76 (1982), S. 479-488 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The relation of lysosomes to autophagy, in particular the lysosomal wrapping mechanism (LWM) is investigated ultracytochemically from the viewpoint of demonstrations of energy dependency of the LWM. An induction of the LWM was made in mouse subcutaneous histiocytes by subcutaneous administration of ovalbumin. Prior administration of the inhibitor of glycolysis (2-deoxyglucose) alone and of the oxidative phospholylation (sodium azide or 2,4-dinitrophenol) alone did not prevent the occurence of the LWM following ovalbumin administration, but a prior administration of a mixture of 2-deoxyglucose and 2,4-dinitrophenol or 2-deoxyglucose and sodium azide prevented the occurence of the LWM. These results suggest that in order for the LWM to take place ATP is required as an energy source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00489903
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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