966 resultados para Spanish newspapers


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This paper considers how and why an Asian enclave of small businesses has appeared in a poor neighborhood characterized by Puerto Rican and other Latino immigration in the post-industrial city of Worcester, Massachusetts. We begin by examining the role of the US in the world system, and argue that the US hegemonic role and specific political economic aspects of global capitalism (ie. deindustrialization) account for some of the migration stream. Next, using socioeconomic and historical data, interviews, and observations, we outline the history of Worcester’s economy and immigration patterns. We demonstrate that the increasing economic inequality leaves few promising employment options for newcomers to Worcester. Drawing on existing literature on immigrant entrepreneurs and ethnic enclaves, we argue that some aspects of the literature appear to shed light on the Vietnamese enterprises which have so visibly appeared (e.g., ethnic niches), while others, (e.g., middle-man minority theory) are not now reflected in local conflict. We conclude by considering the prospects for immigrants to this neighborhood in light of its political economic context.

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BACKGROUND: Mutations in the chloride channel gene, CLCNKB, usually cause classic Bartter syndrome (cBS) or a mixed Bartter-Gitelman phenotype in the first years of life. METHODS: We report an adult woman with atypical BS caused by a homozygous missense mutation, A204T, in the CLCNKB gene, which has previously been described as the apparently unique cause of cBS in Spain. RESULTS: The evaluation of this patient revealed an overlap of phenotypic features ranging from severe biochemical and systemic disturbances typical of cBS to scarce symptoms and diagnosis in the adult age typical of Gitelman syndrome. The tubular disease caused a dramatic effect on mental, growth and puberal development leading to low IQ, final short stature and abnormal ovarian function. Furthermore, low serum PTH concentrations with concomitant nephrocalcinosis and normocalcaemia were observed. Both ovarian function and serum PTH levels were normalized after treatment with cyclooxygenase inhibitors. CONCLUSIONS: The present report confirms a weak genotype-phenotype correlation in patients with CLCNKB mutations and supports the founder effect of the A204T mutation in Spain. In our country, the genetic diagnosis of adult patients with hereditary hypokalaemic tubulopathies should include a screening of A204T mutation in the CLCNKB gene.