Publications by authors named "Steven M Becker"

Article Synopsis
  • Eight years ago, a big project was started by the National Eye Institute to help people see better by fixing their eyes.
  • They have made good progress in replacing special cells in the eye called retinal neurons, but there are still some challenges to overcome.
  • By the end of this decade, they hope to start testing this eye treatment on people for the first time!
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This update will highlight a few of the projects funded by the National Eye Institute (NEI) Audacious Goals Initiative for Regenerative Medicine (AGI) and show their potential to advance regenerative medicine strategies and increase our understanding of the pathobiology of retinal disease. We summarize the recent updates from a talk given to the scientific community about the progress of various AGI-funded projects. NEI is catalyzing the translation of ocular stem cell therapies with its AGI program.

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Article Synopsis
  • The National Eye Institute (NEI) is reviewing past and current initiatives supporting age-related macular degeneration (AMD) research, while also planning future studies.
  • The NEI portfolio includes collaborative research efforts like the International AMD Genomics Consortium and various trials aimed at understanding genetics, clinical presentations, and patient care standards in AMD.
  • Future directions for NEI-supported research include innovative studies on retinal cell treatments and making associated datasets publicly available, enhancing resources for clinical investigators to advance AMD therapies.
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In this study, we describe efforts by the National Eye Institute (NEI) and National Center for Advancing Translational Science (NCATS) to catalyze advances in 3-dimensional (3-D) ocular organoid and microphysiological systems (MPS). We reviewed the recent literature regarding ocular organoids and tissue chips. Animal models, 2-dimensional cell culture models, and postmortem human tissue samples provide the vision research community with insights critical to understanding pathophysiology and therapeutic development.

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In response to the March 2011 earthquake-tsunami disaster and the Fukushima Dai-ichi nuclear accident, a special nongovernmental Radiological Emergency Assistance Mission flew to Japan from the United States. Invited by one of Japan's largest hospital and healthcare groups and facilitated by a New York-based international disaster relief organization, the mission included an emergency physician, a health physicist, and a disaster management specialist. During the 10 d mission, team members conducted fieldwork in areas affected by the earthquake, tsunami, and nuclear accident; went to cities and towns in the 20-30 km Emergency Evacuation Preparation Zone around the damaged nuclear plant; visited other communities affected by the nuclear accident; went to evacuation shelters; met with mayors and other local officials; met with central government officials; exchanged observations, experiences, and information with Japanese medical, emergency response, and disaster management colleagues; and provided radiological information and training to more than 1,100 Japanese hospital and healthcare personnel and first responders.

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Article Synopsis
  • On March 11, 2011, a massive earthquake and tsunami struck eastern Japan, resulting in over 15,700 deaths, widespread destruction, and a nuclear crisis at the Fukushima Dai-ichi power station.
  • A "no go" zone was established due to radiation leaks, prompting evacuations and a request for assistance from a U.S.-based disaster relief organization to help manage the emergency.
  • A special mission was formed to assess the situation, share knowledge with Japanese health professionals, and provide training, leading to valuable insights for future radiological emergencies and emergency response strategies.
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It is now widely recognized that effective communication is a crucial element in radiological/nuclear terrorism preparedness. Whereas in the past, communication and information issues were sometimes viewed as secondary in comparison with technical concerns, today the need to improve risk communication, public information, and emergency messaging is seen as a high priority. The process of improving radiological/nuclear terrorism risk communication can be conceptualized as occurring in four overlapping phases.

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Article Synopsis
  • A nuclear detonation in a US city can lead to serious psychological, social, and behavioral issues, requiring immediate attention from behavioral health care providers (BHCP).
  • BHCP interventions focus on supporting lifesaving actions, promoting safety, managing survivor flow, aiding first responders, assisting in triage, and providing palliative care in the immediate aftermath of the blast.
  • Later, BHCP should collaborate with medical staff to aid hospitalized survivors and continue support throughout the response and recovery phases.
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  • The study confirms that a vaccine using the Entamoeba histolytica Gal/GalNAc lectin protects mice from intestinal amebiasis through T cell-mediated immunity, not antibodies.
  • Vaccination resulted in the production of important cytokines like IFN-gamma and IL-12, indicating a robust T cell response.
  • The research shows that subcutaneous vaccination with a specific adjuvant achieved the highest efficacy (79%), while different routes and adjuvants provided varying levels of protection, all highlighting the crucial role of IFN-gamma in vaccine effectiveness.
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Synaptotagmin VII (Syt VII) is a Ca(2+) sensing molecule that regulates lysosomal exocytosis in several cell types. In macrophages (MØ), Syt VII is required for efficient uptake of large particle loads, by promoting the delivery of lysosomal membrane to phagocytic cups. Here we compare the phagocytic capacity of bone marrow-derived MØs and dendritic cells (DC), and show that the requirement for Syt VII correlates with the unique ability of MØs for continuous phagocytosis.

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Background: Hospital emergency department (ED) clinicians will play a crucial role in responding to any terrorist incident involving radioactive materials. To date, however, there has been a paucity of research focusing specifically on ED clinicians' perspectives regarding this threat.

Methods: At the request of the Centers for Disease Control and Prevention, researchers at the University of Alabama at Birmingham conducted a series of 10 focus groups (total participants, 77) with ED physicians and nurses at hospitals in 3 US regions.

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Objectives: We sought to better understand the challenges of communicating with the public about emerging health threats, particularly threats involving toxic chemicals, biological agents, and radioactive materials.

Methods: At the request of the Centers for Disease Control and Prevention, we formed an interdisciplinary consortium of investigative teams from 4 schools of public health. Over 2 years, the investigative teams conducted 79 focus group interviews with 884 participants and individual cognitive response interviews with 129 respondents, for a total sample of 1013 individuals.

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Providing detailed, comprehensible, and relevant health information is essential

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Synaptotagmin (Syt) VII is a ubiquitously expressed member of the Syt family of Ca2+ sensors. It is present on lysosomes in several cell types, where it regulates Ca2+-dependent exocytosis. Because [Ca2+]i and exocytosis have been associated with phagocytosis, we investigated the phagocytic ability of macrophages from Syt VII-/- mice.

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Millions of people worldwide are currently infected with human papillomaviruses (HPVs). A therapeutic HPV vaccine would have widespread applicability because HPV-associated lesions are difficult to treat and may progress to carcinoma. We developed three attenuated VSV recombinants expressing the cottontail rabbit papillomavirus (CRPV) early protein E6 for use as vaccines.

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One of the most innovative aspects of NCRP Report No. 138 (Management of Terrorist Incidents Involving Radioactive Material) was the high priority it accorded to psychosocial and communication issues. While previous discussions of radiological and nuclear terrorism had occasionally referred to these topics, NCRP Report No.

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With the threat posed by terrorism involving radioactive materials now high on the nation's agenda, local, state, and federal agencies are moving to enhance preparedness and response capabilities. Crucial to these efforts is the development of effective risk communication strategies. This article reports findings from an ongoing study of risk communication issues in nuclear/radiological terrorism situations.

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When a disaster strikes, parents are quick to seek out the medical advice and reassurance of their primary care physician, pediatrician, or in the case of an emergency, an emergency department physician. As physicians often are the first line of responders following a disaster, it is important that they have a thorough understanding of children's responses to trauma and disaster and of recommended practices for screening and intervention. In collaboration with mental health professionals, the needs of children and families can be addressed.

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The United States has not suffered significant psychosocial or medical consequences from the use of biological weapons within its territories. This has contributed to a "natural" state of denial at the community level. This denial could amplify the sense of crisis, anxiety, fear, chaos, and disorder that would accompany such a bioterrorist event.

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