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Weigmann K 《EMBO reports》2005,6(10):911-913
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《Autophagy》2013,9(12):1568-1569
Starvation induces a protective process of self-cannibalization called autophagy that is thought to mediate nonselective degradation of cytoplasmic material. We recently reported that mitochondria escape autophagosomal degradation through extensive fusion into mitochondrial networks upon certain starvation conditions. The extent of mitochondrial elongation is dependent on the type of nutrient deprivation, with amino acid depletion having a particularly strong effect. Downregulation of the mitochondrial fission protein Drp1 was determined to be important in bringing about starvation-induced mitochondrial fusion. The formation of mitochondrial networks during nutrient depletion selectively blocked their autophagic degradation, presumably allowing cells to sustain efficient ATP production and thereby survive starvation.  相似文献   

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Who are we?     
Susan C. Lewis 《Ethnos》2013,78(3-4):224-241
Changes in the meaning of individualism in a Finnish American “Uniontown” reveal the tensions created by the ongoing conflict coloring Finnish identity in an overarching American society. Ideological and social structural ambiguities involved in the process of change are encapsulated in local stereotypes about Finns. These stereotypes seem to be based upon (1) the cultural imagery of peasant traditionalists promoted by a folk festival (2) the visibility of Finnish immigrant workers in the fishing industry and (3) historical political conflict. Drawing on fieldwork and archival data, the author suggests that an analysis of the expressive and instrumental uses of these stereotypes reveals a pattern of conflict and accommodation to an ongoing modernizing process.  相似文献   

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Melanoma is known as an aggressive tumor which shows an increasing incidence and poor prognosis in the metastatic phase. Hence, it seems that diagnosis and effective management (including early diagnosis, choosing of the effective therapeutic platform, caring, and training of patients for early detection) are major aspects of melanoma therapy. Early detection of melanoma is a key point for melanoma therapy. There are various diagnosis options such as assessing of biopsy, imaging techniques, and biomarkers (i.e., several proteins, polymorphism, and liquid biopsy). Among the various biomarkers, assessing circulating tumor cells, cell-free DNAs, cell-free RNAs, and microRNAs (miRNAs) have emerged as powerful diagnosis tools for melanoma patients. Deregulations of these molecules are associated with melanoma pathogenesis. After detection of melanoma, choosing of effective therapeutic regimen is a key step for recovery of melanoma patients. Several studies indicated that various therapeutic approaches including surgery, immunotherapy, systematic therapy, radiation therapy and antibodies therapy could be used as potential therapeutic candidates for melanoma therapy. Caring for melanoma patients is one of the important components of melanoma therapy. Caring and training for melanoma patients could contribute to better monitoring of patients in response to various therapeutic options. Here, we summarized various diagnosis approaches such as assessing biopsy, imaging techniques, and utilization of various biomarkers (i.e., proteins, CTCs, cfDNAs, and miRNAs) as a diagnostic biomarker for detection and monitoring patients with melanoma. Moreover, we highlighted various therapeutic options and caring aspects in patients with melanoma.  相似文献   

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Glycosaminoglycans regulate numerous physiopathological processes such as development, angiogenesis, innate immunity, cancer and neurodegenerative diseases. Cell surface GAGs are involved in cell-cell and cell-matrix interactions, cell adhesion and signaling, and host-pathogen interactions. GAGs contribute to the assembly of the extracellular matrix and heparan sulfate chains are able to sequester growth factors in the ECM. Their biological activities are regulated by their interactions with proteins. The structural heterogeneity of GAGs, mostly due to chemical modifications occurring during and after their synthesis, makes the development of analytical techniques for their profiling in cells, tissues, and biological fluids, and of computational tools for mining GAG-protein interaction data very challenging. We give here an overview of the experimental approaches used in glycosaminoglycomics, of the major GAG-protein interactomes characterized so far, and of the computational tools and databases available to analyze and store GAG structures and interactions.  相似文献   

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The foregoing study attempts to document the course of the American Society of Plastic and Reconstructive Surgeons, Inc. during the period 1964-1973, inclusive. A special attempt has been made to delineate the current trends. Trends, when recognized, may be enhanced, modified, or prevented-as deemed appropriate by the membership.  相似文献   

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Howy Jacobs 《EMBO reports》2010,11(8):561-561
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Heart disease including myocardial infarction and ischemia is associated with the irreversible loss of cardiomyocytes and vasculature, both via apoptosis or necrosis. However, the native capacity for the renewal and repair of myocardial tissue is inadequate as have been current therapeutic measures to prevent left ventricular remodeling. Cell transplantation has emerged as a potentially viable therapeutic approach to directly repopulate and repair the damaged myocardium. A detailed analysis and a vision for future progress in stem cell applications, both in research and clinical cardiology are presented in this review, highlighting the use of a wide spectrum of stem/progenitor cell types including embryonic or fetal stem cells, myoblasts, and adult bone marrow stem cells. An up-to-date comparison of donor cell-types used, and evaluation of the myocardial disorders that might be most amenable to stem cell therapy are discussed. The roles that myocardial cell fusion and transdifferentiation play in stem cell transplantation, the specific shortcomings of available technologies, and recommendations for practical ways that these concerns might be overcome, are also presented.  相似文献   

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The twentieth anniversary of the journal Molecular Ecology was celebrated with a symposium on the current state and the future directions of the field. The event, organized by Tim Vines and Loren Rieseberg, took place on the opening day of the First Joint Congress on Evolutionary Biology organized by the American Society of Naturalists (ASN), the Canadian Society for Ecology and Evolution (CSEE), the European Society for Evolutionary Biology (ESEB), the Society for the Study of Evolution (SSE) and the Society of Systematic Biologists (SSB) in Ottawa (Canada) from 6–10 July 2012. The get together of these five societies created a truly international and exciting “Evolution conference” and the ideal framework for the Molecular Ecology symposium. Its thirteen talks were grouped into the five different subject areas of the journal: Speciation and Hybridization; Landscape Genetics, Phylogeography and Conservation; Ecological Genomics and Molecular Adaptation; Kinship, Parentage and Behaviour; Ecological Interactions. Each session was followed by a panel discussion on the future direction of the subfield. That more than 300 colleagues registered for this special symposium illustrates the broad interest in, and appreciation of, molecular ecology – both the field and the journal.  相似文献   

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Lynch syndrome (LS) is the most common form of inherited predisposition to develop cancer mainly in the colon and endometrium but also in other organ sites. Germline mutations in DNA mismatch repair (MMR) gene cause the transmission of the syndrome in an autosomal dominant manner. The management of LS patients is complicated by the large variation in age at cancer diagnosis which requires these patients to be enrolled in surveillance protocol starting as early as in their second decade of life. Several environmental and genetic factors have been proposed to explain this phenotypic heterogeneity, but the molecular mechanisms remain unknown. Although the presence of genetic anticipation in Lynch syndrome has been suspected since 15 years, only recently the phenomenon has been increasingly reported to be present in different cancer genetic syndromes including LS. While the biological basis of earlier cancer onset in successive generations remains poorly known, recent findings point to telomere dynamics as a mechanism significantly contributing to genetic anticipation in Lynch syndrome and in other familial cancers. In this review, we summarize the clinical and molecular features of Lynch syndrome, with a particular focus on the latest studies that have investigated the molecular mechanisms of genetic anticipation.  相似文献   

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L. M. Edelsward 《Ethnos》2013,78(3-4):189-199
Finnish people are noted for their shyness. Shyness and a sense of independence restrict the ease with which they are able to meet strangers. This public persona need not map on the private persona, which may be warm and open to interdependence. Certain cultural institutions articulate the public and private arenas. Paramount among such institutions is the sauna, where Finns realize their responsiveness to personal and communal needs. Even in the sauna, however, norms regulate social behavior.  相似文献   

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Michael Rands 《Ostrich》2013,84(1-2):148-149
Rands, M. 2000. Birdlife International: who we are and where we have come from. Ostrich 71 (1 & 2): 148–149.

The International Council for Bird Preservation (ICBP)—the forerunner of BirdLife International—was founded in 1922 by a small and dedicated group of individuals. It has grown into a world-wide network of Partner organisations and individuals committed to achieving the conservation of the world's birds and other biological diversity. The evolution and some major achievements of the organisation are outlined, from the early days of ICBP, to the current status of BirdLife International, actively represented in 80 countries world-wide. The BirdLife Vision, the mission of the Partnership, the regional structures and some of the personalities behind the conservation action are presented as the organisation looks forward to the challenge of conserving the world's birds in the 21st century.  相似文献   

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