Abstract:
:Retinal prosthetic implants are the only approved treatment for retinitis pigmentosa, a disease of the eye that causes blindness through gradual degeneration of photoreceptors. An array of microelectrodes triggered by input from a camera stimulates surviving retinal neurons, with each electrode acting as a pixel. Unintended stimulation of retinal ganglion cell axons causes patients to see large oblong shapes of light, rather than focal spots, making it difficult to perceive forms. To address this problem, we performed calcium imaging in isolated retinas and mapped the patterns of cells activated by different electrical stimulation protocols. We found that pulse durations two orders of magnitude longer than those typically used in existing implants stimulated inner retinal neurons while avoiding activation of ganglion cell axons, thus confining retinal responses to the site of the electrode. Multielectrode stimulation with 25-ms pulses can pattern letters on the retina corresponding to a Snellen acuity of 20/312. We validated our findings in a patient with an implanted epiretinal prosthesis by demonstrating that 25-ms pulses evoke focal spots of light.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
Weitz AC,Nanduri D,Behrend MR,Gonzalez-Calle A,Greenberg RJ,Humayun MS,Chow RH,Weiland JDdoi
10.1126/scitranslmed.aac4877subject
Has Abstractpub_date
2015-12-16 00:00:00pages
318ra203issue
318eissn
1946-6234issn
1946-6242pii
7/318/318ra203journal_volume
7pub_type
杂志文章abstract::Late infantile Batten disease (CLN2 disease) is an autosomal recessive, neurodegenerative lysosomal storage disease caused by mutations in the CLN2 gene encoding tripeptidyl peptidase 1 (TPP1). We tested intraparenchymal delivery of AAVrh.10hCLN2, a nonhuman serotype rh.10 adeno-associated virus vector encoding human ...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.abb5413
更新日期:2020-12-02 00:00:00
abstract::Spinal cord injury (SCI) is typically complicated by progressive hemorrhagic necrosis, an autodestructive process of secondary injury characterized by progressive enlargement of a hemorrhagic contusion during the first several hours after trauma. We assessed the role of Abcc8, which encodes sulfonylurea receptor 1 (SU...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3000522
更新日期:2010-04-21 00:00:00
abstract::Numerous studies have implicated microRNAs (miRNAs) in cancer initiation and progression. In contrast, only recently has attention been focused on the pathway that generates these regulatory molecules. The identification of neoplasia-associated germline mutations in DICER1 has focused translational research on compone...
journal_title:Science translational medicine
pub_type: 杂志文章,评审
doi:10.1126/scitranslmed.3002493
更新日期:2011-11-30 00:00:00
abstract::MicroRNAs (miRNAs) regulate many aspects of human biology. They target mRNAs for translational repression or degradation through base pairing with 3' untranslated regions, primarily via seed sequences (nucleotides 2 to 8 in the mature miRNA sequence). A number of individual miRNAs and miRNA families share seed sequenc...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3006840
更新日期:2013-11-20 00:00:00
abstract::The U.S.-Latin America Cancer Research Network strives to expand translational research capabilities and forge new collaborations. ...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aad5859
更新日期:2015-12-23 00:00:00
abstract::Rapid advancements in the field of stem cell biology have led to many current efforts to exploit stem cells as therapeutic agents in regenerative medicine. However, current ex vivo cell manipulations common to most regenerative approaches create a variety of technical and regulatory hurdles to their clinical translati...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3008234
更新日期:2014-05-28 00:00:00
abstract::A pilot study of a handheld fluorescence endomicroscope demonstrates both in vivo imaging and differentiation of normal from precancerous cervical tissue. ...
journal_title:Science translational medicine
pub_type: 评论,杂志文章
doi:10.1126/scitranslmed.aal4989
更新日期:2017-01-11 00:00:00
abstract::Cancer immunotherapy using antibodies that target immune checkpoints has delivered outstanding results. However, responses only occur in a subset of patients, and it is not fully understood what biological processes determine an effective outcome. This lack of understanding hinders the development of rational combinat...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aav7816
更新日期:2019-07-17 00:00:00
abstract::People with autism spectrum disorder (ASD) are characterized by deficits in social interaction, language, and behavioral flexibility. Rare mutations and copy number variations have been identified in individuals with ASD, but in most patients, the causal variants remain unknown. A genome-wide association study (GWAS),...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3003479
更新日期:2012-04-04 00:00:00
abstract::Misuse of prescription opioids, opioid addiction, and overdose underscore the urgent need for developing addiction-free effective medications for treating severe pain. Mu opioid peptide (MOP) receptor agonists provide very effective pain relief. However, severe side effects limit their use in the clinical setting. Ago...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aar3483
更新日期:2018-08-29 00:00:00
abstract::Vaccines directed against the blood stages of Plasmodium falciparum malaria are intended to prevent the parasite from invading and replicating within host cells. No blood-stage malaria vaccine has shown clinical efficacy in humans. Most malaria vaccine antigens are parasite surface proteins that have evolved extensive...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3000257
更新日期:2009-10-14 00:00:00
abstract::We tested the hypothesis that ex vivo hepatocyte gene therapy can correct the metabolic disorder in fumarylacetoacetate hydrolase-deficient (Fah(-/-)) pigs, a large animal model of hereditary tyrosinemia type 1 (HT1). Recipient Fah(-/-) pigs underwent partial liver resection and hepatocyte isolation by collagenase dig...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aaf3838
更新日期:2016-07-27 00:00:00
abstract::New therapeutic approaches are urgently needed to improve survival outcomes for patients with necrotizing pneumonia caused by Staphylococcus aureus One such approach is adjunctive treatment with intravenous immunoglobulin (IVIG), but clinical practice guidelines offer conflicting recommendations. In a preclinical rabb...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aag1153
更新日期:2016-09-21 00:00:00
abstract::Precise form-fitting of prosthetic sockets is important for the comfort and well-being of persons with limb amputations. Capabilities for continuous monitoring of pressure and temperature at the skin-prosthesis interface can be valuable in the fitting process and in monitoring for the development of dangerous regions ...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.abc4327
更新日期:2020-12-16 00:00:00
abstract::The tumor microenvironment is host to a complex network of cytokines that contribute to shaping the intratumoral immune reaction. Chromosomal gains and losses, coupled with expression analysis, of 59 cytokines and receptors and their functional networks were investigated in colorectal cancers. Changes in local express...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3007240
更新日期:2014-03-19 00:00:00
abstract::Each year, more than a half million people in the United States alone die from sepsis, a dire multisystem disease with highly inadequate treatment options. In a recent issue of Science, Puneet and colleagues provide compelling evidence that inhibiting sphingosine kinase 1--an enzyme that resides in immune cells and is...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3001299
更新日期:2010-06-16 00:00:00
abstract::In humans, exposure to aristolochic acid (AA) is associated with urothelial carcinoma of the upper urinary tract (UTUC). Exome sequencing of UTUCs from 19 individuals with documented exposure to AA revealed a remarkably large number of somatic mutations and an unusual mutational signature attributable to AA. Most of t...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3006200
更新日期:2013-08-07 00:00:00
abstract::Despite the very low risk-to-benefit ratio of vaccines, fear of negative side effects has discouraged many people from getting vaccinated, resulting in reemergence of previously controlled diseases such as measles, pertussis, and diphtheria. Part of this fear stems from the lack of public awareness of the many preclin...
journal_title:Science translational medicine
pub_type: 杂志文章,评审
doi:10.1126/scitranslmed.3002302
更新日期:2011-07-27 00:00:00
abstract::Obesity increases the risk of adverse outcomes during acute critical illnesses such as burns, severe trauma, and acute pancreatitis. Although individuals with more body fat and higher serum cytokines and lipase are more likely to experience problems, the roles that these characteristics play are not clear. We used sev...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3002573
更新日期:2011-11-02 00:00:00
abstract::Rapidly spreading antibiotic resistance and the low discovery rate of new antimicrobial compounds demand more effective strategies for early drug discovery. One bottleneck in the drug discovery pipeline is the identification of the modes of action (MoAs) of new compounds. We have developed a rapid systematic metabolom...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aal3973
更新日期:2018-02-21 00:00:00
abstract::Acquired ESR1 mutations are a major mechanism of resistance to aromatase inhibitors (AIs). We developed ultra high-sensitivity multiplex digital polymerase chain reaction assays for ESR1 mutations in circulating tumor DNA (ctDNA) and investigated the clinical relevance and origin of ESR1 mutations in 171 women with ad...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aac7551
更新日期:2015-11-11 00:00:00
abstract::Recessive dystrophic epidermolysis bullosa (RDEB) is a rare inherited skin and mucous membrane fragility disorder complicated by early-onset, highly malignant cutaneous squamous cell carcinomas (SCCs). The molecular etiology of RDEB SCC, which arises at sites of sustained tissue damage, is unknown. We performed detail...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aas9668
更新日期:2018-08-22 00:00:00
abstract::Public health emergencies, such as an Ebola disease outbreak, provide a complex and challenging environment for the evaluation of candidate vaccines. Here, we outline the need for flexible and responsive vaccine trial designs to be used in public health emergencies, and we summarize recommendations for their use in th...
journal_title:Science translational medicine
pub_type: 杂志文章,评审
doi:10.1126/scitranslmed.aat0360
更新日期:2019-07-03 00:00:00
abstract::Tumor escape from immune-mediated destruction has been associated with immunosuppressive mechanisms that inhibit T cell activation. Although evidence for an active immune response, including infiltration with CD8(+) T cells, can be found in a subset of patients, those tumors are nonetheless not immunologically rejecte...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3006504
更新日期:2013-08-28 00:00:00
abstract::There is a critical need for effective new pharmacotherapies for pain. The paucity of new drugs successfully reaching the clinic calls for a reassessment of current analgesic drug discovery approaches. Many points early in the discovery process present significant hurdles, making it critical to exploit advances in pai...
journal_title:Science translational medicine
pub_type: 杂志文章,评审
doi:10.1126/scitranslmed.3008320
更新日期:2014-08-13 00:00:00
abstract::Meibomian glands (MGs) are sebaceous glands of the eyelid margin that secrete lipids needed to avert tear evaporation and to help maintain ocular surface homeostasis. Obstruction of MGs or other forms of MG dysfunction can promote chronic diseases of the ocular surface. Although chronic eyelid inflammation, such as al...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aas9164
更新日期:2018-07-25 00:00:00
abstract::Merkel cell polyomavirus (MCV) causes ~80% of primary and metastatic Merkel cell carcinomas (MCCs). By comparing digital transcriptome subtraction deep-sequencing profiles, we found that transcripts of the cellular survivin oncoprotein [BIRC5a (baculoviral inhibitor of apoptosis repeat-containing 5)] were up-regulated...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3003713
更新日期:2012-05-09 00:00:00
abstract::About 25% of high-grade cervical intraepithelial neoplasias (CIN2/3) caused by human papillomavirus serotype 16 (HPV16) undergo complete spontaneous regression. However, to date, therapeutic vaccination strategies for HPV disease have yielded limited success when measured by their ability to induce robust peripheral b...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.3007323
更新日期:2014-01-29 00:00:00
abstract::Functionally diverse subpopulations of astrocytes have correlates in the neoplastic adult brain. ...
journal_title:Science translational medicine
pub_type: 评论,杂志文章
doi:10.1126/scitranslmed.aam9858
更新日期:2017-03-01 00:00:00
abstract::Most cancer deaths arise from metastases as a result of circulating tumor cells (CTCs) spreading from the primary tumor to vital organs. Despite progress in cancer prognosis, the role of CTCs in early disease diagnosis is unclear because of the low sensitivity of CTC assays. We demonstrate the high sensitivity of the ...
journal_title:Science translational medicine
pub_type: 杂志文章
doi:10.1126/scitranslmed.aat5857
更新日期:2019-06-12 00:00:00