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Asset accumulation and transfer for old age: a study on Peruvian and Moroccan migration to Spain.

ABSTRACT: Population ageing constitutes a major determinant of contemporary international migration, acting both as a push and pull factor in countries of origin and reception. From a micro-perspective, longevity, economic instability and migration are also affecting personal life as well as family organisation and solidarity. The aim of this paper is to focus on the strategies, in individual and family spheres, that migrants and their loved ones develop to accumulate and transfer assets, in order to respond to the demands of the elderly and counteract the uncertainties of advancing age. To capture this reality we conducted in-depth interviews and focus groups with Peruvian and Moroccan migrants in Spain, and with returnees and relatives in the two countries of origin between 2006 and 2010. Both cases demonstrate that country contexts, together with personal experiences and family relationships, determine where to stay, and with whom or with what to support oneself as one grows older. More recently, the economic crisis in Spain that is negatively influencing social and migration policies, reducing migrants' economic gains, and placing new burdens on people's shoulders, is affecting these asset accumulation and transfer activities for old age.

SUBMITTER: Escriva A

PROVIDER: S-EPMC5549206 | biostudies-other | 2013 Dec

REPOSITORIES: biostudies-other

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Project description:BackgroundSurvival remains an issue in pulmonary hypertension, a chronic disorder that often affects aged human adults. In young adult mice and rats, chronic 50% hypoxia (11% FIO2 or 0.5 atm) induces pulmonary hypertension without threatening life. In this framework, oral dehydroepiandrosterone was recently shown to prevent and reverse pulmonary hypertension in rats within a few weeks. To evaluate dehydroepiandrosterone therapy more globally, in the long term and in old age, we investigated whether hypoxia decreases lifespan and whether dehydroepiandrosterone improves survival under hypoxia.Methods240 C57BL/6 mice were treated, from the age of 21 months until death, by normobaric hypoxia (11% FIO2) or normoxia, both with and without dehydroepiandrosterone sulfate (25 mg/kg in drinking water) (4 groups, N = 60). Survival, pulmonary artery and heart remodeling, weight and blood patterns were assessed.ResultsIn normoxia, control mice reached the median age of 27 months (median survival: 184 days). Hypoxia not only induced cardiopulmonary remodeling and polycythemia in old animals but also induced severe weight loss, trembling behavior and high mortality (p < 0.001, median survival: 38 days). Under hypoxia however, dehydroepiandrosterone not only significantly reduced cardiopulmonary remodeling but also remarkably extended survival (p < 0.01, median survival: 126 days). Weight loss and trembling behavior at least partially remained, and polycythemia completely, the latter possibly favorably participating in blood oxygenation. Interestingly, at the dose used, dehydroepiandrosterone sulfate was detrimental to long-term survival in normoxia (p < 0.05, median survival: 147 days).ConclusionDehydroepiandrosterone globally reduced what may be called an age-related frailty induced by hypoxic pulmonary hypertension. This interestingly recalls an inverse correlation found in the prospective PAQUID epidemiological study, between dehydroepiandrosterone blood levels and mortality in aged human smokers and former smokers.

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Asset accumulation and transfer for old age: a study on Peruvian and Moroccan migration to Spain.

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