نتایج جستجو برای: oln
تعداد نتایج: 111 فیلتر نتایج به سال:
T HE accumulation of accurate iniformiation as regards operative mortality and results of surgery is basic to the advancement of the surgical management of any disease. It has been amply demonstrated by Lewis and Tauflc,1 Swan,2 Gross and associates,3 Bailey and associates,4 Bj6rk and Crafoord,5 Gibbon,6 Shumacker7 and ourselves8 that a number of technics of closure of atrial septal defects can...
Oligodendrocyte damage and loss are key features of multiple sclerosis (MS) pathology. Oligodendrocytes appear to be particularly vulnerable to reactive oxygen species (ROS) and cytokines, such as tumor necrosis factor-α (TNF), which induce cell death and prevent the differentiation of oligodendrocyte progenitor cells (OPCs). Here, we investigated the efficacy of sulforaphane (SFN), monomethyl ...
We prove that the problem to get an inclusion minimal elimination ordering can be solved in linear time for planar graphs. The basic structure of the linear time algorithm is as follows. We select a vertex r as maximum and get a rst approximation of a minimal elimination ordering considering a vertex x as smaller than y if x has a larger distance than y from r. Using planarity, one can determin...
We discuss problems of minimum degree-constrained trees T k , where each vertex of a complete graph K n with a metric satifying triangle inequality is restricted to at most k neighbors. We show that for any k and m, the ratio w(Tk) w(Tk+m) can be arbitrarily close to k;m = 1 + m m+k?2 and give an O(n log(k + m))) algorithm that converts a T k+m into a T k such that w(T k) < k;m T k+m. For the s...
Background and Objective: Dorema aucheri, Stachys pilifera and Trachyspermum copticum are used in Iranian traditional medicine especially in the province of Kohgilouyeh and Boyerahmad. This study aimed to determine the effect of these plants on proliferation of rat brain oligodendrocytes. Materials and Methods: Macerated hydroalcoholic extract of each plant was prepared using 50% ethanol. The O...
Cytotoxic Effects of Tropodithietic Acid on Mammalian Clonal Cell Lines of Neuronal and Glial Origin
The marine metabolite tropodithietic acid (TDA), produced by several Roseobacter clade bacteria, is known for its broad antimicrobial activity. TDA is of interest not only as a probiotic in aquaculture, but also because it might be of use as an antibacterial agent in non-marine or non-aquatic environments, and thus the potentially cytotoxic influences on eukaryotic cells need to be evaluated. T...
development and chlioroplast replication. Biochim. Biophys. Acta 51: 340-46. 21. SHIBATA, K. 1957. Spectroscopic studies oln chlorophyll formation in intact leaves. J. Biochem. 44: 147-73. 22. SMITH, J. H. C., C. S. FRENCH, AND V. M/. KoSKI. 1952. The Hill reaction: development of chloroplast activity during greening of etiolated barley leaves. Plant Physiol. 27: 212-13. 23. SMITH, J. H. C. 195...
Clozapine displays stronger systemic metabolic side effects than haloperidol and it has been hypothesized that therapeutic antipsychotic and adverse metabolic effects of these drugs are related. Considering that cerebral disconnectivity through oligodendrocyte dysfunction has been implicated in schizophrenia, it is important to determine the effect of these drugs on oligodendrocyte energy metab...
Axon-derived molecules are temporally and spatially required as positive or negative signals to coordinate oligodendrocyte differentiation. Increasing evidence suggests that, in addition to the inhibitory Jagged1/Notch1 signaling cascade, other pathways act via Notch to mediate oligodendrocyte differentiation. The GPI-linked neural cell recognition molecule F3/contactin is clustered during deve...
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