نتایج جستجو برای: mei
تعداد نتایج: 2488 فیلتر نتایج به سال:
Reduced thyroid hormone concentrations (T4 and/or T3) and increased thyroid-stimulating hormone (TSH) have been proposed to mediate the thyroid tumor promoting effects of hepatic microsomal enzyme inducers (MEI) and antithyroid drugs. TSH is known to stimulate thyroid gland function and growth, as well as neoplasia. Thyroid weight has been used as an indicator of thyroid gland growth in MEI stu...
In many animals, including vertebrates, oocyte meiotic spindles are bipolar but assemble in the absence of centrosomes. Although meiotic spindle positioning in oocytes has been investigated extensively, much less is known about their assembly. In Caenorhabditis elegans, three genes previously shown to contribute to oocyte meiotic spindle assembly are the calponin homology domain protein encoded...
Microtubule severing by the katanin complex is activated by PPFR-1–dependent MEI-1 dephosphorylation
Katanin is an evolutionarily conserved microtubule (MT)-severing complex implicated in multiple aspects of MT dynamics. In Caenorhabditis elegans, the katanin homologue MEI-1 is required for meiosis, but must be inactivated before mitosis. Here we show that PPFR-1, a regulatory subunit of a trimeric protein phosphatase 4 complex, enhanced katanin MT-severing activity during C. elegans meiosis. ...
PURPOSE This study was designed to determine whether there is a methylator phenotype in stage I and II endometrioid endometrial adenocarcinoma, and if so, whether methylation correlates with recurrence. EXPERIMENTAL DESIGN Bisulfite-converted DNAs from 24 stage I and II primary cancers (12 recurrent and 12 nonrecurrent), and 5 endometrial cancer cell lines were analyzed for methylation in the...
We have previously described the gene mei-1, which encodes an essential component of the Caenorhabditis elegans meiotic spindle. When ectopically expressed after the completion of meiosis, mei-1 protein disrupts the function of the mitotic cleavage spindles. In this article, we describe the cloning and the further genetic characterization of mel-26, a postmeiotic negative regulator of mei-1. me...
In her paper, "Shakespeare's Taming of the Shrew and the Tradition of Screwball Comedy," Mei Zhu argues that Shakespeare's Taming of the Shrew is controversial owing to the subtlety and complexity of the text as well as its subject matter. Franco Zeffirelli's 1967 film version seems to follow the narrative structure of the original play closely while its effect is different. Through a detailed ...
The El Niño Southern Oscillation (ENSO) is the Earth’s strongest climate fluctuation on inter-annual time scales and has global impacts although originating in the tropical Pacific. Many point indices have been developed to describe ENSO but the Multivariate ENSO Index (MEI) is considered as the most representative since it links six different meteorological parameters measured over the tropica...
Translational regulation plays an essential role in Drosophila ovarian germline stem cell (GSC) biology. GSC self-renewal requires two translational repressors, Nanos (Nos) and Pumilio (Pum), which repress the expression of differentiation factors in the stem cells. The molecular mechanisms underlying this translational repression remain unknown. Here, we show that the CCR4 deadenylase is requi...
In Drosophila, the maternally expressed mei-41 and grp genes are required for successful execution of the nuclear division cycles of early embryogenesis. In fission yeast, genes encoding similar kinases (rad3 and chk1, respectively) are components of a cell cycle checkpoint that delays mitosis by inhibitory phosphorylation of Cdk1. We have identified mutations in a gene encoding a Cdk1 inhibito...
This paper draws parallels between the Text Encoding Initiative (TEI) and the proposed Music Encoding Initiative (MEI), reviews existing design principles for music representations, and describes an eXtensible Markup Language (XML) document type definition (DTD) for modeling music notation which attempts to incorporate those principles.
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