991 resultados para Brydone, P. (Patrick), 1736-1818


Relevância:

30.00% 30.00%

Publicador:

Resumo:

The American Geographical Society (AGS) serves as a case study for considering the nature of “gendered geography” in the nineteenth-century United States. This article links the ideals and programmatic interests of the society—which were fundamentally commercial in nature—with the personal subjectivity of its chief protagonist, Charles P. Daly, AGS president from 1864 until his death in 1899. Daly is presented as an “armchair explorer” who shifted the focus of the society away from statistical representations of the world toward the action packed narrative descriptions of the world supplied by embodied explorers in the field. The gender dynamics associated with the center versus the field provide a useful way to contrast both sides of Daly’s persona—as a scholar performing detached, careful study yet someone who also derived a great deal of personal authority by staging popular and dramatic spectacles in New York City, speechifying and presenting himself on stage at geographical society meetings with returning heroic explorers. Daly not only served as New York’ smost influential access point to the Arctic at the time, he also served as an important node in the reproduction of masculine culture in promotion of a particularly masculinist commercial geography. Key Words: American Geographical Society, Charles Patrick Daly, gender and geography, history of geography, masculinity.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Using variants of the murine BW5147 lymphoma cell-line, we have previously identified 3 monoclonal antibodies (MAbs) that discriminate between metastatic and nonmetastatic BW5147-derived T-cell hybridomas and lymphomas, as well as BW5147-unrelated T-lymphomas. These MAbs were reported to recognize an identical membrane-associated sialoglycoprotein, termed "metastatic T-cell hybridoma antigen" (MTH-Ag). Here, we document that the expression pattern of the MTH-Ag on metastatic and nonmetastatic BW5147 variants correlates with that of the P-selectin glycoprotein ligand 1 (PSGL-1), a sialomucin involved in leukocyte recruitment to sites of inflammation. Moreover, the MAbs against the MTH-Ag recognize PSGL-1 when it is transfected in MTH-Ag-negative BW5147 variants, suggesting that the MTH-Ag is PSGL-1. Overexpression of MTH-Ag/PSGL-1 in MTH-Ag-negative BW5147 variants did not affect their in vivo malignancy. Yet, down-regulation of MTH-Ag/PSGL-1 expression on metastatic, MTH-Ag-positive BW5147 variants, using an RNA interference (RNAi) approach, resulted, in a dose-dependent manner, in a significant reduction of liver and spleen colonization and a delay in mortality of the recipient mice upon intravenous inoculation. Collectively, these results demonstrate that, although MTH-Ag/PSGL-1 overexpression alone may not be sufficient for successful dissemination and organ colonization, MTH-Ag/PSGL-1 plays a critical role in hematogenous metastasis of lymphoid cancer cells.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Musik von Carl Maria von Weber. Gedicht von Friedrich Kind. Nach Friedrich Kinds Jubel Cantate gedichtet von A. Wendt