Action of Various Anti-Carcinogenic Agents on the Egg Division in Sea-Urchin Egg
نویسندگان
چکیده
منابع مشابه
Calcium in sea urchin egg during fertilization.
Calcium plays a strikingly important role in two of the major events in developmental biology: cell activation and differentiation. In this review we begin with the location and quantity of intracellular calcium in sea urchin oocytes, and then discuss the changes that occur during fertilization and egg activation, placing special emphasis on the mobilization and redistribution of intracellular ...
متن کاملStudies on Sulfhydryl Groups during Cell Division of Sea Urchin Egg
The contractility of the thread model prepared from the KCl-soluble proteins of the egg and in vivo factors for the contraction are investigated in Hemicentrotus, Anthocidaris, and Pseudocentrotus eggs. The contractility of the thread model induced by metal ions or cystine changes during development in the characteristic pattern of high at the metaphase and low at the monaster and the interkine...
متن کاملTension at the surface of the dividing sea-urchin egg.
Several theories have been put forward to explain the mechanics of cleavage of animal cells. According to the expanding membrane theory of Mitchison and Swann (Mitchison, 1952; Mitchison & Swann, 1955; Swann & Mitchison, 1958), the cleaving furrow is passively pushed in as a result of 'active' expansion of poles; while the constricting ring theory (Marsland, 1950, 1956 a, b) anticipates that th...
متن کاملrab3 mediates cortical granule exocytosis in the sea urchin egg.
Egg activation at fertilization in the sea urchin results in the exocytosis of approximately 15,000 cortical granules that are docked at the plasma membrane. Previously, we reported that several integral membrane proteins modeled in the SNARE hypothesis, synaptotagmin, VAMP, and syntaxin, in addition to a small GTPase of the ras superfamily, rab3, were present on cortical granules (Conner, S., ...
متن کاملIntracellular sodium activity in the sea urchin egg during fertilization
Fertilization of the sea urchin egg triggers a sequence of events that are necessary for metabolic derepression and stimulation of proliferation. Changes in intracellular Ca2+ and H+ activities regulate the sequence of events. Intracellular sodium activity is important in the regulation of the intracellular activities of these ions and may directly regulate metabolic events. Using Na+-sensitive...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Okayama Igakkai Zasshi (Journal of Okayama Medical Association)
سال: 1960
ISSN: 0030-1558,1882-4528
DOI: 10.4044/joma1947.72.8-10_1783