共查询到20条相似文献,搜索用时 15 毫秒
1.
The concepts of biocitizenship and biosociality, in many ways developed as a reaction to the former critique of genetification and fears of a return of eugenics, have gained a stronghold in much of the current debates on the social effects of modern-day genetics. In contrast to claims of a return to eugenics, the literature on biocitizenship highlights the new choice-enhancing possibilities involved in present-day biomedicine, underlining the break with past forms of biopower. In this analysis, hope becomes a life-inducing and vitalizing force, opening new avenues of civic participation and engagement. Most critics of this analysis have attacked the claims to novelty attributed to these concepts, arguing that more traditional forms of biopower remain as important as ever. In contrast, we argue that the biocitizenship literature underestimates the radical nature of this break with the past, ending up with a too narrow and one-sided interpretation of the ramifications of the new discourse of hope. On the basis of two different case stories, the “Portraits of Hope” campaign from California, USA and the “Mehmet Case” from Norway, we indicate an alternative “darker” reading of the new discourse of hope, arguing that its driving force is not so much future possibilities as present despair. 相似文献
2.
The Truth from the Body: Medical Certificates as Ultimate Evidence for Asylum Seekers 总被引:1,自引:0,他引:1
Whether through traditional law or modern torture, the body has always been a privileged site on which to demonstrate the evidence of power. But for immigrants, the poor, and, more generally, the dominated—all of whom have to prove their eligibility to certain social rights—it has also become the place that displays the evidence of truth. In France, as immigration control increases, asylum seekers are more and more submitted to the evaluation of their physical sequels and psychic traumas, as if their autobiographical accounts were not sufficient. In this article, we show how nongovernmental organizations (NGOs) deal with the dilemmas posed by this situation, how they develop protocols standardizing their expertise, and how their medical authority progressively substitutes itself for the asylum seekers' word. In this process of objectification, it is the experience of the victims as political subjects that is progressively erased. 相似文献
3.
《Anthrozo?s》2013,26(4):505-517
ABSTRACTDuring 2009–10, I conducted ethnographic fieldwork with 31 immunologists, virologists, and neuroscientists working with either rats or mice. I encountered how the conceptual and physical bounds that have traditionally separated nature from culture, specie from specie, human from animal, are crossed, blurred, and reasserted. In this ambiguous zone, a scientific incuriosity about animals themselves persists, in the practice of inquiring into animal bodies and minds to produce insights into human health and its betterment. This privileging of human health bypasses animals themselves in favor of a view of them as human similars and prone objects, wholly available to persons, and affirms the Heideggarian thesis, that science occupies an arrogated position in modernity. Such incurious encounters with animals produced ideas and pronouncements about the close biological and genetic similarities that humans and animals share, that scientists in my study called “biokinship” and “genekinship.” These terms indicate both a close relation between animals and persons, but they also present the terms upon which hierarchical relations between humans and animals might be arrayed. Equally present among the scientists with whom I worked was a curiosity about animals themselves. This manifested in understandings and articulations of animals as beings with whom one might make a relationship in which mutually understood communication was possible. Attendant to this curiosity about animals themselves was an awareness scientists in my study had of what these relationships, or what I have called fleshy kinships with rats and mice, might mean for scientific practice, for good science, and for human–animal relatedness in the laboratory. This ambiguous situation calls for analytic attention to biotic materiality and process, but equally for attention to rodents as beings with whom scientists interact on an everyday basis, and with whom they form communicative relations. 相似文献
4.
Gail Davies 《New genetics and society》2013,32(4):433-441
This short paper adds to debates on the unfolding spaces and logics of biotechnological development bought together in the 2009 special issue of New Genetics and Society on ‘Biopolitics in Asia’. Though an unlikely comparison between the development of the genomic sciences and the building of gambling casinos in the city state of Singapore, it reflects on the nature of political and technological investments in this South-East Asian city. It argues that Western expectations of a link between scientific practices, and civic epistemologies linked to democratic decision-making, are replaced by a rather different future orientation to scientific experimentation, economic investment and social development in Singapore. 相似文献
5.
反义RNA对猪α-1,3-半乳糖苷转移酶活性的影响 总被引:1,自引:0,他引:1
α 1,3 半乳糖表位是猪 人异种移植超急性排斥反应的主要抗原 ,由α 1,3 半乳糖苷转移酶催化合成 .用RT PCR方法扩增中国实验用小型猪α 1,3 半乳糖苷转移酶cDNA的前 582bp ,测定碱基序列并构建其反义表达载体pLXRN ,将其转染入猪主动脉内皮细胞 .NorthernBlotting表明α 1,3 半乳糖苷转移酶mRNA减少 .检测α 1,3 半乳糖苷转移酶活性表明 ,反义RNA可使其活性下降32 2 % .研究结果表明可能通过反义RNA来抑制猪 人异种移植超急性排斥反应 相似文献
6.
《Biotechnology and bioengineering》2018,115(9):2341-2355
Transplantation of encapsulated porcine islets is proposed to treat type 1 diabetes. However, the envelopment of fibrous tissue and the infiltration of immune cells impair islet function and eventually cause implant failure. It is known that hemodialysis using an ethylene vinyl alcohol (EVOH) membrane results in minor tissue responses. Therefore, we hypothesized that using a low‐adhesive EVOH membrane for encapsulation may prevent host cell accumulation and fibrous capsule formation. In this study, rat islets suspended in chitosan gel were encapsulated in bags made from highly porous EVOH membranes, and their in vitro insulin secretion function as well as in vivo performance was evaluated. The results showed that the EVOH bag did not affect islet survival or glucose‐stimulated insulin secretion. Whereas naked islets were dysfunctional after 7 days of culture in vitro, islets within the EVOH bag produced insulin continuously for 30 days. Streptozotocin‐induced diabetic mice were given islets–chitosan gel–EVOH implants intraperitoneally (650–800 islets equivalent) and exhibited lower blood glucose levels and regained body weight during a 4‐week observation period. The transplanted mice had higher levels of serum insulin and C‐peptide, with an improved blood glucose disappearance rate. Retrieved implants had minor tissue adhesion, and histology showed a limited number of mononuclear cells and fibroblasts surrounding the implants. No invasion of host cells into the EVOH bags was noticed, and the encapsulated islets were intact and positive for insulin–glucagon immunostaining. In conclusion, an EVOH bag can protect encapsulated islets, limit fibrous capsule formation, and extend graft function. 相似文献
7.
8.
Martin C Plat M Nerriére-Daguin V Coulon F Uzbekova S Venturi E Condé F Hermel JM Hantraye P Tesson L Anegon I Melchior B Peschanski M Le Mauff B Boeffard F Sergent-Tanguy S Neveu I Naveilhan P Soulillou JP Terqui M Brachet P Vanhove B 《Transgenic research》2005,14(4):373-384
The transplantation of fetal porcine neurons is a potential therapeutic strategy for the treatment of human neurodegenerative disorders. A major obstacle to xenotransplantation, however, is the immune-mediated rejection that is resistant to conventional immunosuppression. To determine whether genetically modified donor pig neurons could be used to deliver immunosuppressive proteins locally in the brain, transgenic pigs were developed that express the human T cell inhibitory molecule hCTLA4-Ig under the control of the neuron-specific enolase promoter. Expression was found in various areas of the brain of transgenic pigs, including the mesencephalon, hippocampus and cortex. Neurons from 28-day old embryos secreted hCTLA4-Ig in vitro and this resulted in a 50% reduction of the proliferative response of human T lymphocytes in xenogenic proliferation assays. Transgenic embryonic neurons also secreted hCTLA4-Ig and had developed normally in vivo several weeks after transplantation into the striatum of immunosuppressed rats that were used here to study the engraftment in the absence of immunity. In conclusion, these data show that neurons from our transgenic pigs express hCTLA4-Ig in situ and support the use of this material in future pre-clinical trials in neuron xenotransplantation.Caroline Martin,Martine Plat, Philippe Brachet, Bernard Vanhove - These authors have contributed equally to the development of this work. 相似文献
9.
Igor Pasteur Nikolai Tronko Irina Drozdovich Svetlana Donich Ludmila Voitenko 《Cytotechnology》2000,33(1-3):89-92
The aim of the present study was to develop atransplantation technique for restoration of thyroidfunction in rats with radioiodine-inducedhypothyroidism. Each Wistar rat received the dose of75.0 Ci of 131-iodine by intraperitonealinjection. The serum thyroxine and triiodothyroninevalues in all rats fell to low levels by 2.5 weeksafter radioiodine administration. Thexenotransplantation of 3-day-old newborn pig thyroidorgan culture was performed on day 18 afterradioactive ablation by injection into the fat tissueof anterior abdominal wall. Epithelial cell swarmswith follicular formation manifested themselves amongadipose tissue on day 7 as well as day 17 afterxenotransplantation. The serum thyroxine andtriiodothyronine values in the rats were generallywithin the euthyroid range by day 7–17 afterxenotransplantation. The thyroid gland of ratsreverted to the norm in morphofunctional appearance.These results indicated that the xenografted newbornpig thyroid organ culture allowed a restoration of thyroid function in Wistar rats with post-radioiodine hypothyroidism. 相似文献
10.
SIRKKU K. HELLSTEN 《Developing world bioethics》2008,8(2):70-81
This article discusses what 'global bioethics' means today and what features make bioethical research 'global'. The article provides a historical view of the development of the field of 'bioethics', from medical ethics to the wider study of bioethics in a global context. It critically examines the particular problems that 'global bioethics' research faces across cultural and political borders and suggests some solutions on how to move towards a more balanced and culturally less biased dialogue in the issues of bioethics. The main thesis is that we need to bring global and local aspects closer together, when looking for international guidelines, by paying more attention to particular cultures and local economic and social circumstances in reaching a shared understanding of the main values and principles of bioethics, and in building 'biodemocracy'. 相似文献
11.
本工作构建了含有hDAF基因的转基因小鼠,以便研究hDAF基因能否消除异种器官移植中的排斥反应。 采用DNA重组的方法构建hDAF基因的表达载体pSP64HP(Fig.1)。通过受精卵显微注射,将其中的目的基因片段,转移到小鼠体内,建立转基因小鼠。再通过Dot blotting和Southern blotting杂交方法对出生小鼠的基因组特征进行查证。 连续两次对直接裂解菌液做PCR扩增,筛选出重组质粒(Fig.2&3),酶切图谱(Fig.4)和Southern杂交(Fig.5)分析结果与预期吻合,出现预期条带;小鼠受精卵注射后存活比率为77.9%,受精卵的发育率为3.4%,出生小鼠中,10.5%出现清晰杂交信号。 表明:hDAF基因表达载体构建成功;并整合入小鼠基因组中。 相似文献
12.
Yuichiro Higuchi Kenji Kawai Masahumi Yamamoto Miyuki Kuronuma Yasuhiko Ando Ikumi Katano Masato Nakamura Hiroshi Suemizu 《Experimental Animals》2014,63(1):55-62
The interaction between transplanted cells and host tissues is important for the growthand maintenance of transplanted cells. To analyze the mechanisms of these interactions, asystemic fluorescent protein-expressing mouse is a useful recipient. In this study, wegenerated a novel NOG strain, which strongly expresses enhanced green fluorescent protein(EGFP; PgkEGFP-NOG), especially in the liver, kidney, gastrointestinal tract, and testis.Because the host tissues expressed EGFP, xenotransplanted human cancer cells were clearlyidentified as EGFP-negative colonies in PgkEGFP-NOG mice. Immunohistochemical analysisrevealed that EGFP-expressing stromal tissues formed a complicated tumor microenvironmentwithin xenograft tissues. Moreover, a similar microenvironment was observed in human iPScell-derived teratomas. Collectively, these results indicated that a suitablemicroenvironment is essential for the growth and maintenance of xenotransplanted cells andthat PgkEGFP-NOG mice represent a useful animal model for analyzing the mechanisms ofmicroenvironment formation. 相似文献
13.
Michal Kravel-Tovi 《Ethnic and racial studies》2013,36(4):737-756
A large number of non-Jewish immigrants from the former Soviet Union have arrived in Israel since the late 1980s. This article explores how the Israeli State has responded to this perceived demographic threat by endorsing a pro-Jewish conversion policy targeted at this population of new citizens. By analysing a variety of ethnographic and textual materials, I trace the organizational processes and discursive practices through which conversion has been crafted into a ‘national mission’: an all-encompassing state endeavour whose impetus is a national-Zionist biopolitics. The Foucauldian concept of biopolitics offers a novel way to understand the interface between religious conversion and the nation-state. Specifically, it positions the concept of population as a primary analytical category, thereby enabling us to understand religious conversion as a mechanism of national population policy. 相似文献
14.
Dianne Lalonde 《Bioethics》2018,32(5):281-288
Women face extraordinary difficulty in seeking sterilization as physicians routinely deny them the procedure. Physicians defend such denials by citing the possibility of future regret, a well‐studied phenomenon in women's sterilization literature. Regret is, however, a problematic emotion upon which to deny reproductive freedom as regret is neither satisfactorily defined and measured, nor is it centered in analogous cases regarding men's decision to undergo sterilization or the decision of women to undergo fertility treatment. Why then is regret such a concern in the voluntary sterilization of women? I argue that regret is centered in women's voluntary sterilization due to pronatalism or expectations that womanhood means motherhood. Women seeking voluntary sterilization are regarded as a deviant identity that rejects what is taken to be their essential role of motherhood and they are thus seen as vulnerable to regret. 相似文献
15.
New genetic technologies promise to generate valuable insights into the aetiology of several psychiatric conditions, as well as a wider range of human and animal behaviours. Advances in the neurosciences and the application of new brain imaging techniques offer a way of integrating DNA analysis with studies that are looking at other biological markers of behaviour. While candidate 'genes for' certain conditions, including schizophrenia and bipolar disorders, are said to be 'un-discovered' at a faster rate than they are discovered, many studies are being conducted on personality traits such as aggressiveness and anti-social traits. The clinical applicability and implications of these studies are often discussed within the scientific community. However, little attention has so far been paid to their possible policy implications in relation to criminality management and to Criminal Law itself. Similarly, the related ethical issues arising in the field of crime control, and the tensions between enhancing security for society and protecting civil liberties, are currently under-explored. This paper investigates these ethical issues by focusing on the views of those professionals - including judges, lawyers, probation officers and social workers - who work with individuals 'deemed at risk' of violent and aggressive behaviours. It also discusses and problematizes mainstream rhetoric and arguments around the notion of 'risky individuals'. 相似文献
16.
猪作为异种器官移植供体的研究进展 总被引:8,自引:0,他引:8
异种器官移植是现代和未来医学的重要研究领域之一,转基因猪有望为人类提供移植所需的器官,本对猪作为异种器官移植供体的可能性,移植引起的免疫排斥反应及病毒感染等问题进行了综述和讨论。 相似文献
17.
Pohajdak B Mansour M Hrytsenko O Conlon JM Dymond LC Wright JR 《Transgenic research》2004,13(4):313-323
BACKGROUND: Tilapia are commercially important tropical fish which, like many teleosts, have anatomically discrete islet organs called Brockmann bodies. When transplanted into diabetic nude mice, tilapia islets provide long-term normoglycemia and mammalian-like glucose tolerance profiles. METHODS: Using site-directed mutagenesis and linker ligation we have \"humanized\" the tilapia insulin gene so that it codes for [desThrB30] human insulin while maintaining the tilapia regulatory sequences. Following microinjection into fertilized eggs, we screened DNA isolated from whole fry shortly after hatching by PCR. Positive fish were grown to sexual maturity and mated to wild-types and positive Fl's were further characterized. RESULTS: Human insulin was detected in both serum and in the clusters of beta cells scattered throughout the Brockmann bodies. Surrounding non-beta cells as well as other tissues were negative indicating beta cell specific expression. Purification and sequencing of both A-and B-chains verified that the insulin was properly processed and humanized. CONCLUSIONS: After extensive characterization, transgenic tilapia could become a suitable, inexpensive source of islet tissue that can be easily mass-produced for clinical islet xenotransplantation. Because tilapia islets are exceedingly resistant to hypoxia by mammalian standards, transgenic tilapia islets should be ideal for xenotransplantation using immunoisolation techniques. 相似文献
18.
19.
Webster NL Forni M Bacci ML Giovannoni R Razzini R Fantinati P Zannoni A Fusetti L Dalprà L Bianco MR Papa M Seren E Sandrin MS Mc Kenzie IF Lavitrano M 《Molecular reproduction and development》2005,72(1):68-76
Multi-gene transgenic pigs would be of benefit for large animal models in medical, agricultural, and pharmaceutical applications; in particular for xenotransplantation, where extensive genetic manipulation of donor pigs is required to make them suitable for organ grafting to humans. We used the sperm mediated gene transfer (SMGT) method to produce with high efficiency multi-gene transgenic pigs using three genes coding for fluorescent proteins: enhanced blue (EBFP), green (EGFP), and red (DsRed2). All three fluorescent proteins were expressed in 171 out of 195 normally developed morula/blastocysts examined at day 6 post insemination (88%). Genomic DNA of 18 piglets born from two litters was screened by PCR, showing that all piglets were transgenic with at least one gene, 7/18 piglets were triple transgenic, 7/18 double transgenic, and 4/18 single transgenic. Fluorescence in situ hybridization (FISH) analysis revealed multiple sites of integration of the transgenes. RNA and protein expression was found in muscle, heart, liver, hair, and peripheral blood mononuclear cells (PBMCs). These results show that SMGT is an effective method for introducing multiple genes into pigs as shown by the simultaneous expression of three fluorescent proteins. 相似文献