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Annulate Lamella: Yapısı ve Fonksiyonları

Annulate Lamellae: Structure and Functions Review

Journal Name:

  • Selçuk Tıp Dergisi

Publication Year:

  • 2011

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Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Annulate lamellae (AL) are found in the cytoplasm and consist of stacks of flattened membrane cisternae perforated by numerous and densely packed pore complexes lacking both chromatin and a lamina. AL are frequently observed in rapidly growing or differentiating cells, such as male and female gametes, tumor ceils, and virally infected cells. Nuclear and annulate lamellae pores appear morphologically indistinguishable in their basic structure when viewed by a number of different electron microscopy techniques. Since AL are relatively easier to observe in germ cells, most of our knowledge concerning this organelle and speculations as to the proposed function of these cytomembranes has arisen from morphological studies of annulate lamellae during the course of germ cell maturations. Most cells have an inherent propensity towards AL formation . Even though annulate lamellae are not a ubiquitous feature of terminally differentiated cells, it is possible to induce the formation of the AL network in cells. The purpose of this review is to acquaint or reacquaint the reader with this inracellular membrane network and to adres a number of basic questions concerning the orgin, function, and fate this rather intriguing cellular organelle.
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Abstract (Original Language): 
Annulate lamella (AL), sitoplazmada bulunur ve hem kromatin hem de laminadan yoksun çok sayıda yoğun biçimde paketlenmiş por kompleksleri ile delinmiş yassılaşmış membran sisterna yığınlarından oluşmuştur. AL, hızlı gelişen yada farklılaşan hücrelerde (örneğin; erkek ve kadın gametler, tümör hücreleri ve viral infekte hücreler) görülmektedir. Nuklear ve AL porları çeşitli elektron mikroskopı teknikleri ile çalışıldığında onları basit yapılarından morfolojik olarak ayırt etmenin zor olduğu ortaya çıktı. AL, üreme hücrelerinde daha kolay gözlemlenebildiğinden onun fonksiyonu hakkında bilgiler, üreme hücrelerinin olgunlaşmaları sırasında yapılan morfolojik çalışmalardan elde edilmektedir. Çoğu hücre AL oluşturabilmek için kalıtsal bir yeteneğe sahiptir. Hatta, AL tamamen farklılaşmış bir hücrede halihazırda bulunan bir organel değilken, hücrede AL ağının oluşumunu başlatmak mümkündür. Bu derleme ile, bu hücre içi membran sistemini tanıtmak, bazı bilgileri yenilemek ve oldukça ilgi çeken organelin oluşumu, görevleri ve akıbeti ile ilgili birçok temel sorunları ortaya koymak istiyoruz.
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  • 3
182-187
  • Turkish

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