Cotton Kring (shipfarmer46)
About 30% of medulloblastomas (MBs), a tumor of the cerebellum, arise from cerebellar granule cell precursors (GCPs) undergoing transformation following activation of the Sonic hedgehog (Shh) pathway. To study this process, we generated a new MB model by crossing Patched1 heterozygous (Ptch1 +/-) mice, which develop spontaneous Shh-type MBs, with mice lacking B-cell translocation gene 1 (Btg1), a regulator of cerebellar development. In MBs developing in Ptch1 +/- mice, deletion of Btg1 does not alter tumor and lesion frequencies, nor affect the proliferation of neoplastic precursor cells. S961 However, in both tumors and lesions arising in Ptch1 +/- mice, ablation of Btg1 increases by about 25% the apoptotic neoplastic precursor cells, as judged by positivity to activated caspase-3. Moreover, although Btg1 ablation in early postnatal GCPs, developing in the external granule cell layer, leads to a significant increase of proliferation, and decrease of differentiation, relative to wild-type, no synergy occurs with tght © 2020 Ceccarelli, D'Andrea, Micheli and Tirone.The term "big data" refers broadly to large volumes of data, often gathered from several sources, that are then analyzed, for example, for predictive analytics. Combining and mining genetic data from varied sources including clinical genetic testing, for example, electronic health records, what might be termed as "recreational" genetic testing such as ancestry testing, as well as research studies, provide one type of "big data." Challenges and cautions in analyzing big data include recognizing the lack of systematic collection of the source data, the variety of assay technologies used, the potential variation in classification and interpretation of genetic variants. While advanced technologies such as microarrays and, more recently, next-generation sequencing, that enable testing an individual's DNA for thousands of genes and variants simultaneously are briefly discussed, attention is focused more closely on challenges to analysis of the massive data generated by these genomic technologies. The main theme of this review is to evaluate challenges associated with big data in general and specifically to bring the sophisticated technology of genetic/genomic testing down to the individual level, keeping in mind the human aspect of the data source and considering where the impact of the data will be translated and applied. Considerations in this "humanizing" process include providing adequate counseling and consent for genetic testing in all settings, as well as understanding the strengths and limitations of assays and their interpretation. Copyright © 2020 Helzlsouer, Meerzaman, Taplin and Dunn.Duplication of vas deferens is an anomaly that is generally encountered during inguinal hernia repair, orchiopexy, radical prostatectomy, varicocelectomy, and vasectomy. The estimated rate of this anomaly in the United States is 0.01%. This anomaly may predispose to iatrogenic vas deferens injury during inguinal hernia repair. Embryological point of view suggests that the duplication of the mesonephric duct system could result in duplicated vas deferens. Failure to recognize this anomaly may lead to injury, obstruction, or spermatic granuloma. Furthermore, it is important to identify duplicated vas deferens during vasectomy to avoid failure of the procedure. Identification of duplicated vas deferens is important during inguinal hernia surgery, vasectomy, and varicocelectomy. Herein, we report a case of duplicated vas deferens during open indirect inguinal hernia repair. © 2020 Ismaiel, Shuaib, Edward, Marafi, licensee HBKU Press.Behavior analysts are increasingly called to serve culturally and linguistically diverse populations. The culture of a population can provide context in which to identify behaviors likely to be reinforced by the client's social environment, stimuli established as reinforcers for client behavior, and behavioral repertoires shaped by the client's soc
