Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory

The Pierre Auger Observatory, which is the largest air-shower experiment in the world, offers unprecedented exposure to neutral particles at the highest energies. Since the start of data collection more than 18 years ago, various searches for ultra-high-energy (UHE, E greater than or similar to 10^(17) eV) photons have been performed, either for a diffuse flux of UHE photons, for point sources of UHE photons or for UHE photons associated with transient events such as gravitational wave events. In the present paper, we summarize these searches and review the current results obtained using the wealth of data collected by the Pierre Auger Observatory

“It’s our DNA, we deserve the right to test!” : A content analysis of a petition for the right to access direct-to-consumer genetic testing

Aims: Various companies are currently advertising or selling genetic tests over the internet using a model of provision referred to as ‘direct-to-consumer’ (DTC). This commercial offer of DTC genetic testing (GT) has fueled a number of scientific, ethical and policy debates. To date there have been few studies published regarding the users’ perspective. This study aimed to obtain information regarding the issues raised by individuals who signed a petition in support of DTC GT and the ‘unrestricted’ access to their genetic information. Materials &amp; methods: We conducted qualitative content analysis of comments written by individuals who signed a public online petition initiated by DIYgenomics (CA, USA) to support “personal access to genetic information”. Results: Of the 523 individuals who signed the petition sponsored by DIYgenomics, 247 individuals also wrote individual comments. A content analysis of these comments reveals that petitioners raised six main issues in support of unrestricted access to DTC GT: that their ownership of their DNA should allow them to have unrestricted access to their genomic information; that they should have the right to their genomic information; that the government has no place in (further) regulating DTC GT; that healthcare professionals should not be placed as intermediaries when purchasing DTC GT services; that many petioners who had already obtained DTC GT had positive experiences with this model of provision; and that genealogy or ancestry DNA testing is one of the main activities petitioners wish to have ‘unrestricted’ or ‘direct’ access. Conclusion: These results give insight into why individuals may support unrestricted access to their genomic information and confirm some of the motivations of users for purchasing DTC GT. Our analysis also brings to the forefront themes that have been raised less often in empirical studies involving motivations to purchase DTC GT services; these include the strongly held beliefs of some petitioners that, since they own their DNA, they should have the right to access the information without (further) government control or physician involvement. Interestingly, the comments left by petitioners also reveal a certain distrust of governmental agencies and healthcare professionals. This urges us to further study the public’s views of these services and the potential impact of these views in order to responsibly address the ongoing debate on DTC GT. </jats:p

"We need to talk!" Barriers to GPs' communication about the option of physician-assisted suicide and their ethical implications: results from a qualitative study

GPs usually care for their patients for an extended period of time, therefore, requests to not only discontinue a patient's treatment but to assist a patient in a suicide are likely to create intensely stressful situations for physicians. However, in order to ensure the best patient care possible, the competent communication about the option of physician assisted suicide (PAS) as well as the assessment of the origin and sincerity of the request are very important. This is especially true, since patients' requests for PAS can also be an indicator for unmet needs or concerns. Twenty-three qualitative semi-structured interviews were conducted to in-depth explore this multifaceted, complex topic while enabling GPs to express possible difficulties when being asked for assistance. The analysis of the gathered data shows three main themes why GPs may find it difficult to professionally communicate about PAS: concerns for their own psychological well-being, conflicting personal values or their understanding of their professional role. In the discussion part of this paper we re-assess these different themes in order to ethically discuss and analyse how potential barriers to professional communication concerning PAS could be overcome

Interprofessional Silence at the End of Life: Do Swiss General Practitioners and Hospital Physicians Sufficiently Share Information About Their Patients?

Empirical research suggests that the quality of patient care at the end of life (EOL) is influenced by the effectiveness of the collaboration between the general practitioners (GPs) and hospital physicians (HPs).; To identify possible difficulties and barriers to effective collaboration at the EOL between GPs and HPs from the perspective of Swiss GPs.; Twenty-three qualitative semi-structured interviews with GPs were transcribed and analyzed using Mayring's content analysis. Interdisciplinary clinical-ethical analysis focused on the quality of GP and HP professional collaboration.; GPs described the quality of collaboration with HPs as poor, in particular the lack of communication. There were two main issues to emerge. First, infrequent communication with HPs could negatively affect the care of the patient. Second, GPs were concerned with the lack of information about hospital care and involvement in medical decision making given their longstanding relationships with their patients.; The research showed that Swiss GPs were concerned with the quality of their patients' EOL care and the current level of GP/HP collaboration. GPs appealed for greater involvement with EOL care decisions based on their relationship of care and knowledge of patient preferences. These findings require further critical evaluation to explore the potential advantages for patient care. Existing evidence suggests that there are measurable health benefits from successful GP/HP collaborations. A change in the way GPs maintain involvement with their patients during hospitalizations would be warranted if it resulted in a better use of resources, better patient experiences, and better health outcomes

Intestinal stromal cells in mucosal immunity and homeostasis

A growing body of evidence suggests that non-hematopoietic stromal cells of the intestine have multiple roles in immune responses and inflammation at this mucosal site. Despite this, many still consider gut stromal cells as passive structural entities, with past research focused heavily on their roles in fibrosis, tumor progression, and wound healing, rather than their contributions to immune function. In this review, we discuss our current knowledge of stromal cells in intestinal immunity, highlighting the many immunological axes in which stromal cells have a functional role. We also consider emerging data that broaden the potential scope of their contribution to immunity in the gut and argue that these so-called "non-immune" cells are reclassified in light of their diverse contributions to intestinal innate immunity and the maintenance of mucosal homeostasis