108 research outputs found

    A Stacked Deck: Racial Minorities and the New American Political Economy

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    The 1960s brought the promise of a new era of social justice for all Americans. Indeed, the overturning of official, state-sanctioned racial structures was a watershed in national life. During the 1970s and 1980s, however, the earlier momentum of the civil rights period dissipated as the end of the postwar economic expansion ushered in a crisis of American culture and polity. Symbolic racism emerged as a powerful political and ideological instrument to buttress resistance to racial and ethnic equality. During the 1980s, a Reagan administration antagonistic to the aspirations of minorities and the working classes in general was able to impose an array of policies (and a discourse) on the nation which polarized ethnic groups and classes even more rigidly. In Reaganism, one sees the congruence and power of symbolic racism and class-targeted economic policy, the capacity of elite forces to carry out economic restructuring at the cost of minority equality. What the post-civil rights period has largely done is to stack the American deck against African Americans and Hispanics

    [Review of] Susan A. Glenn. Daughters of the Shtetl: Life and Labor in the Immigrant Generation

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    In this meticulously researched and highly readable work, Susan A. Glenn examines the experiences of a particular group of Jewish immigrants, European-born daughters who, early in this century, went to work in the American garment industry. The author is attempting here no less than to make sense of the intersecting linkages between eastern European Jewish culture, the immigration experience, working class life, the labor movement, and gender identity

    [Review of] Kathleen M. Blee. Women of the Klan: Racism and Gender in the 1920s

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    We need to know more about why people become racists and what their motivations are for joining racial supremacist groups. Scholarly works dealing with the Ku Klux Klan\u27s meteroic [meteoric] 1920s rise usually emphasize how rapid post-World War urbanization, agricultural depression, and fears of immigrants and cultural changes unsettled traditional-minded citizens in small-town and rural American landscapes and made the Klan attractive. By choosing to concentrate specifically upon women in the Klan, and the complex ways in which race, religion and gender interact, Kathleen Blee, a sociology professor at the University of Kentucky, has opened up new dimensions here

    Re-Examining Firm Size and Exporting: An Empirical Analysis of South Carolina Firms

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    Mittlelstaedt, Harben, and Ward (2003) and Wolff and Pett (2000) offer contradictory evidence on the impact of firm size (by employment) and the propensity to export. Using a data set very similar to that of Mittelstaedt et al., we re-examine the issue. Although we find that firm size has a significant impact on export propensity, we fail to find a threshold at twenty employees, as Mittelsteadt, et al., did. Our findings are more supportive of Wolff and Pett, who argue very small firms are capable of exporting. This paper concludes by considering the implications for researchers and policymakers

    Sequence variation in the human transcription factor gene POU5F1

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    <p>Abstract</p> <p>Background</p> <p>POU5F1 expression is required to maintain stem cell pluripotency and for primordial germ cells to retain proliferative capability in embryonic development. Recent evidence suggests that <it>POU5F1 </it>may also be a testicular germ cell carcinoma (TGCC) oncogene, and <it>POU5F1 </it>variation may influence TGCC risk. As an important first step to a genetic association study, we sought to identify all common sequence variants in an 11.3 kb region containing <it>POU5F1</it>, and to describe the linkage disequilibrium patterns, using DNA from individuals of African-descent (AD) and European-descent (ED).</p> <p>Results</p> <p>A higher number of polymorphisms was observed in the AD (n = 102) versus ED (n = 82) population. Among the 41 observed haplotypes, 21 (51%) and 12 (29%) were unique to the AD and ED populations, respectively, while 8 (20%) were observed in both. The number of tagging polymorphisms necessary to explain at least 80% of common variation (minor allele frequency ≥ 0.10) due to the remaining untyped polymorphisms was 17 for an AD and 10 for an ED population, providing a 4.0- and 7.0-fold gain in genotyping efficiency for characterizing nucleotide variation, respectively.</p> <p>Conclusion</p> <p><it>POU5F1 </it>is highly polymorphic, however a smaller subset of polymorphisms can tag the observed genetic variation with little loss of information.</p

    Bone marrow stromal cells attenuate sepsis via prostaglandin E2— dependent reprogramming of host macrophages to increase their interleukin-10 production

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    Sepsis causes over 200,000 deaths yearly in the US; better treatments are urgently needed. Administering bone marrow stromal cells (BMSCs—also known as mesenchymal stem cells) to mice before or shortly after inducing sepsis by cecal ligation and puncture reduced mortality and improved organ function. The beneficial effect of BMSCs was eliminated by macrophage depletion or pretreatment with antibodies specific for interleukin-10 (IL-10) or IL-10 receptor. Monocytes and/ or macrophages from septic lungs made more IL-10 when prepared from mice treated with BMSCs versus untreated mice. Lipopolysaccharide (LPS)-stimulated macrophages produced more IL-10 when cultured with BMSCs, but this effect was eliminated if the BMSCs lacked the genes encoding Toll-like receptor 4, myeloid differentiation primary response gene-88, tumor necrosis factor (TNF) receptor-1a or cyclooxygenase-2. Our results suggest that BMSCs (activated by LPS or TNF-α) reprogram macrophages by releasing prostaglandin E2 that acts on the macrophages through the prostaglandin EP2 and EP4 receptors. Because BMSCs have been successfully given to humans and can easily be cultured and might be used without human leukocyte antigen matching, we suggest that cultured, banked human BMSCs may be effective in treating sepsis in high-risk patient groups.Sepsis, a serious medical condition that affects 18 million people per year worldwide, is characterized by a generalized inflammatory state caused by infection. Widespread activation of inflammation and coagulation pathways progresses to multiple organ dysfunction, collapse of the circulatory system (septic shock) and death. Because as many people die of sepsis annually as from acute myocardial infarction1, a new treatment regimen is desperately needed. In the last few years, it has been discovered that BMSCs are potent modulators of immune responses2-5. We wondered whether such cells could bring the immune response back into balance, thus attenuating the underlying pathophysiology that eventually leads to severe sepsis, septic shock and death6,7. As a model of sepsis, we chose cecal ligation and puncture (CLP), a procedure that has been used for more than two decades8. This mouse model closely resembles the human disease: it has a focal origin (cecum), is caused by multiple intestinal organisms, and results in septicemia with release of bacterial toxins into the circulation. With no treatment, the majority of the mice die 24-48 h postoperatively. Originally published Nature Medicine, Vol. 15, No. 1, Jan 200

    Minimally invasive surgery and cancer: controversies part 1

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    Perhaps there is no more important issue in the care of surgical patients than the appropriate use of minimally invasive surgery (MIS) for patients with cancer. Important advances in surgical technique have an impact on early perioperative morbidity, length of hospital stay, pain management, and quality of life issues, as clearly proved with MIS. However, for oncology patients, historically, the most important clinical questions have been answered in the context of prospective randomized trials. Important considerations for MIS and cancer have been addressed, such as what are the important immunologic consequences of MIS versus open surgery and what is the role of laparoscopy in the staging of gastrointestinal cancers? This review article discusses many of the key controversies in the minimally invasive treatment of cancer using the pro–con debate format

    Finishing the euchromatic sequence of the human genome

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    The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

    The streamlined genome of Phytomonas spp. relative to human pathogenic kinetoplastids reveals a parasite tailored for plants

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    Members of the family Trypanosomatidae infect many organisms, including animals, plants and humans. Plant-infecting trypanosomes are grouped under the single genus Phytomonas, failing to reflect the wide biological and pathological diversity of these protists. While some Phytomonas spp. multiply in the latex of plants, or in fruit or seeds without apparent pathogenicity, others colonize the phloem sap and afflict plants of substantial economic value, including the coffee tree, coconut and oil palms. Plant trypanosomes have not been studied extensively at the genome level, a major gap in understanding and controlling pathogenesis. We describe the genome sequences of two plant trypanosomatids, one pathogenic isolate from a Guianan coconut and one non-symptomatic isolate from Euphorbia collected in France. Although these parasites have extremely distinct pathogenic impacts, very few genes are unique to either, with the vast majority of genes shared by both isolates. Significantly, both Phytomonas spp. genomes consist essentially of single copy genes for the bulk of their metabolic enzymes, whereas other trypanosomatids e.g. Leishmania and Trypanosoma possess multiple paralogous genes or families. Indeed, comparison with other trypanosomatid genomes revealed a highly streamlined genome, encoding for a minimized metabolic system while conserving the major pathways, and with retention of a full complement of endomembrane organelles, but with no evidence for functional complexity. Identification of the metabolic genes of Phytomonas provides opportunities for establishing in vitro culturing of these fastidious parasites and new tools for the control of agricultural plant disease. © 2014 Porcel et al
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