ACETYLCHOLINESTERASE ACTIVITY IN ESERINE-TREATED ASCIDIAN EMBRYOS
نویسندگان
چکیده
منابع مشابه
Acetylcholinesterase development in extra cells caused by changing the distribution of myoplasm in ascidian embryos.
This research shows that myoplasmic crescent material of the ascidian egg has both functional autonomy and functional specificity in establishing the differentiation pathway of muscle lineage cells. The cytoplasmic segregation pattern in eggs of Styela plicata was altered by compression of the embryos during third cleavage. This caused a meridional division instead of the normal equatorial thir...
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Some embryos of Ciona intestinalis which were permanently cleavage-arrested with cytochalasin B at the 1-cell, 4-cell, or 8-cell stages produced, after 12 or 16 h of development time (18 degrees C), a level of muscle acetylcholinesterase activity equal to that found in normal early and later larval stage embryos of the same age. Enzyme activity was measured quantitatively in single whole embryo...
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In terms of their embryonic origins, the anterior and posterior parts of the ascidian central nervous system (CNS) are associated with distinct germ layers. The anterior part of the sensory vesicle, or brain, originates from ectoderm lineages following a neuro-epidermal binary fate decision. In contrast, a large part of the remaining posterior CNS is generated following neuro-mesodermal binary ...
متن کاملEffect of Jujube Extract on Acetylcholinesterase Activity and Oxidative Stress in Morphine-treated Male Rats
Background: One of the mechanisms associated with morphine neurotoxicity is oxidative stress. Jujube fruit extract may reduce oxidative stress due to its antioxidant properties. Objective: This study aims to investigate the protective effect of jujube fruit extract on the Acetylcholinesterase (AchE) activity and oxidative stress in the cortex and serum of morphine-treated male rats. Material...
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Adult Boltenia villosa (phylum, Chordata; subphylum, Urochorda [Tunicata]; class, Ascidiacea) were collected intertidally. Gametes and embryos were handled according to standard procedures (Fernald, 1959; Costello et al., 1957). Living embryos in gastrula or neurula stages were pipetted into the fixative accompanied by a small amount of seawater. The fixative was either (a) 2.7% Os04 in approxi...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1970
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1540080