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Crocker J, Ogutu EA, Snyder J, Freeman MC. The state of reporting context and implementation in peer-reviewed evaluations of water, sanitation, and hygiene interventions: A scoping review. Int J Hyg Environ Health 2024; 259:114363. [PMID: 38604106 DOI: 10.1016/j.ijheh.2024.114363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 02/05/2024] [Accepted: 03/26/2024] [Indexed: 04/13/2024]
Abstract
INTRODUCTION To accurately assess evidence from environmental and public health field trials, context and implementation details of the intervention must be weighed with trial results; yet these details are under and inconsistently reported for water, sanitation, and hygiene (WASH), limiting the external validity of the evidence. METHODS To quantify the level of reporting of context and implementation in WASH evaluations, we conducted a scoping review of the 40 most cited evaluations of WASH interventions published in the last 10 years (2012-2022). We applied criteria derived from a review of existing reporting guidance from other sectors including healthcare and implementation science. We subsequently reviewed main articles, supplements, protocols, and other associated resources to assess thoroughness of context and implementation reporting. RESULTS Of the final 25 reporting items we searched for, four-intervention name, approach, location, and temporality-were reported by all studies. Five items-theory, implementer qualifications, dose intensity, targeting, and measured fidelity-were not reported in over a third of reviewed articles. Only two studies (5%) reported all items in our checklist. Only 74% of items were found in the main article, while the rest were found in separate papers (7%) or not at all (19%). DISCUSSION Inconsistent reporting of WASH implementation illustrates a major challenge in the sector. It is difficult to know what interventions are actually being evaluated and how to compare evaluation results. This inconsistent and incomplete implementation reporting limits the ability of programmers and policy makers to apply the available evidence to their contexts. Standardized reporting guidelines would improve the application of the evidence for WASH field evaluations.
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Affiliation(s)
- Jonny Crocker
- Gangarosa Department of Environmental Health, Emory University, Atlanta, Georgia, USA.
| | - Emily A Ogutu
- Gangarosa Department of Environmental Health, Emory University, Atlanta, Georgia, USA
| | - Jedidiah Snyder
- Gangarosa Department of Environmental Health, Emory University, Atlanta, Georgia, USA
| | - Matthew C Freeman
- Gangarosa Department of Environmental Health, Emory University, Atlanta, Georgia, USA
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Herrgott G, Snyder J, She R, Malta T, Sabedot T, Lee I, Pawloski J, Asmaro K, Zhang J, Cannella C, Nelson K, Thomas B, deCarvalho A, Poisson L, Chitale D, Mukherjee A, Mosella M, Robin A, Walbert T, Rosenblum M, Mikkelsen T, Kalkanis S, Podolski-Gondim G, Tirapelli D, Carlotti Jr. C, Rock J, Castro A, Noushmehr H. OS01.7.A Detection of methylation-based prognostic signatures in liquid biopsy specimens from patients with meningiomas. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Detection of distinct epigenetic biomarkers in circulating cell-free DNA (cfDNA) of liquid biopsy (LB) specimens (e.g. blood) fosters opportunity for prognostication of central nervous system (CNS) tumors and has not been thoroughly explored in patients with meningiomas.
Material and Methods
We profiled the cfDNA methylome (EPIC array) in serum specimens from patients with meningiomas (MNG; n= 63) and harnessed internal and external meningioma tissue methylome data with reported follow up (n=48). To predict recurrence risk (RR), we consolidated a tissue cohort with at least 5 years of follow up and divided them into confirmed recurrence (CR; either reported progressive disease in post-surgical imaging, or additional resections following initial surgery) and confirmed no-recurrence (CNR: no confirmed disease progression w/in at least 5-years of follow-up). Then through application of an iterative process consisting of multiple tissue- and serum-based supervised analyses, we identified risk-specific methylation markers with serum specific features which, when inputted into a random forest algorithm allowed for segregation of both tumor tissue and liquid biopsy specimens according to recurrence risk. We estimated immune cell composition using MethylCIBERSORT, where a reference methylome atlas of chosen immune cell types was utilized to deconvolute the MNG samples.
Results
The resulting recurrence risk classifier demonstrated an appreciable predictive power in classifying samples as high or low recurrence risk across the tumor tissue cohort (ACC: 87.5%, CUI+: 85.2%). When compared to another classifier, our model demonstrated statistically significant agreement across primary meningioma samples (κ=0.269, p=0.002), and more accurately predicted samples to recur across an expanded time window (time to recurrence >5yrs). Across resulting liquid biopsy classifications, recurrence risk subgroups were analogous with reported risk factors, including WHO grade, extent of resection, and tumor location. Recurrence risk subgroups (high and low) also demonstrated differential estimated immune cell contributions, with low-risk samples exhibiting a “hot” profile, or enrichment of B-Cells, CD56- and CD4 T-Cells, and natural killer cells. Notably, the estimated neutrophil to lymphocyte ratio, previously purported to be relevant to tumor prognosis, was appreciably higher for those meningioma samples with the highest recurrence risk.
Conclusion
DNA methylation markers identified in the serum are suitable for the development of machine learning-based models which present high predictive power to prognosticate patients with meningioma and estimate a differential immune profile across recurrence risk groups. After validation in an external cohort, this noninvasive approach may improve the presurgical therapeutic management of patients with meningiomas.
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Affiliation(s)
- G Herrgott
- Henry Ford Health , Detroit, MI , United States
| | - J Snyder
- Henry Ford Health , Detroit, MI , United States
| | - R She
- Henry Ford Health , Detroit, MI , United States
| | - T Malta
- Henry Ford Health , Detroit, MI , United States
| | - T Sabedot
- Henry Ford Health , Detroit, MI , United States
| | - I Lee
- Henry Ford Health , Detroit, MI , United States
| | - J Pawloski
- Henry Ford Health , Detroit, MI , United States
| | - K Asmaro
- Henry Ford Health , Detroit, MI , United States
| | - J Zhang
- Henry Ford Health , Detroit, MI , United States
| | - C Cannella
- Henry Ford Health , Detroit, MI , United States
| | - K Nelson
- Henry Ford Health , Detroit, MI , United States
| | - B Thomas
- Henry Ford Health , Detroit, MI , United States
| | | | - L Poisson
- Henry Ford Health , Detroit, MI , United States
| | - D Chitale
- Henry Ford Health , Detroit, MI , United States
| | - A Mukherjee
- Henry Ford Health , Detroit, MI , United States
| | - M Mosella
- Henry Ford Health , Detroit, MI , United States
| | - A Robin
- Henry Ford Health , Detroit, MI , United States
| | - T Walbert
- Henry Ford Health , Detroit, MI , United States
| | - M Rosenblum
- Henry Ford Health , Detroit, MI , United States
| | - T Mikkelsen
- Henry Ford Health , Detroit, MI , United States
| | - S Kalkanis
- Henry Ford Health , Detroit, MI , United States
| | | | - D Tirapelli
- University of Sao Paulo , Sao Paulo , Brazil
| | | | - J Rock
- Henry Ford Health , Detroit, MI , United States
| | - A Castro
- Henry Ford Health , Detroit, MI , United States
| | - H Noushmehr
- Henry Ford Health , Detroit, MI , United States
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Yee LM, McGee P, Bailit JL, Wapner RJ, Varner MW, Thorp JM, Caritis SN, Prasad M, Tita AT, Saade GR, Sorokin Y, Rouse DJ, Blackwell SC, Tolosa JE, Mallett G, Grobman W, Ramos-Brinson M, Roy A, Stein L, Campbell P, Collins C, Jackson N, Dinsmoor M, Senka J, Paychek K, Peaceman A, Talucci M, Zylfijaj M, Reid Z, Leed R, Benson J, Forester S, Kitto C, Davis S, Falk M, Perez C, Hill K, Sowles A, Postma J, Alexander S, Andersen G, Scott V, Morby V, Jolley K, Miller J, Berg B, Dorman K, Mitchell J, Kaluta E, Clark K, Spicer K, Timlin S, Wilson K, Moseley L, Leveno K, Santillan M, Price J, Buentipo K, Bludau V, Thomas T, Fay L, Melton C, Kingsbery J, Benezue R, Simhan H, Bickus M, Fischer D, Kamon T, DeAngelis D, Mercer B, Milluzzi C, Dalton W, Dotson T, McDonald P, Brezine C, McGrail A, Latimer C, Guzzo L, Johnson F, Gerwig L, Fyffe S, Loux D, Frantz S, Cline D, Wylie S, Iams J, Wallace M, Northen A, Grant J, Colquitt C, Rouse D, Andrews W, Moss J, Salazar A, Acosta A, Hankins G, Hauff N, Palmer L, Lockhart P, Driscoll D, Wynn L, Sudz C, Dengate D, Girard C, Field S, Breault P, Smith F, Annunziata N, Allard D, Silva J, Gamage M, Hunt J, Tillinghast J, Corcoran N, Jimenez M, Ortiz F, Givens P, Rech B, Moran C, Hutchinson M, Spears Z, Carreno C, Heaps B, Zamora G, Seguin J, Rincon M, Snyder J, Farrar C, Lairson E, Bonino C, Smith W, Beach K, Van Dyke S, Butcher S, Thom E, Rice M, Zhao Y, Momirova V, Palugod R, Reamer B, Larsen M, Spong C, Tolivaisa S, VanDorsten J. Differences in obstetrical care and outcomes associated with the proportion of the obstetrician's shift completed. Am J Obstet Gynecol 2021; 225:430.e1-430.e11. [PMID: 33812810 DOI: 10.1016/j.ajog.2021.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/14/2021] [Accepted: 03/26/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Understanding and improving obstetrical quality and safety is an important goal of professional societies, and many interventions such as checklists, safety bundles, educational interventions, or other culture changes have been implemented to improve the quality of care provided to obstetrical patients. Although many factors contribute to delivery decisions, a reduced workload has addressed how provider issues such as fatigue or behaviors surrounding impending shift changes may influence the delivery mode and outcomes. OBJECTIVE The objective was to assess whether intrapartum obstetrical interventions and adverse outcomes differ based on the temporal proximity of the delivery to the attending's shift change. STUDY DESIGN This was a secondary analysis from a multicenter obstetrical cohort in which all patients with cephalic, singleton gestations who attempted vaginal birth were eligible for inclusion. The primary exposure used to quantify the relationship between the proximity of the provider to their shift change and a delivery intervention was the ratio of time from the most recent attending shift change to vaginal delivery or decision for cesarean delivery to the total length of the shift. Ratios were used to represent the proportion of time completed in the shift by normalizing for varying shift lengths. A sensitivity analysis restricted to patients who were delivered by physicians working 12-hour shifts was performed. Outcomes chosen included cesarean delivery, episiotomy, third- or fourth-degree perineal laceration, 5-minute Apgar score of <4, and neonatal intensive care unit admission. Chi-squared tests were used to evaluate outcomes based on the proportion of the attending's shift completed. Adjusted and unadjusted logistic models fitting a cubic spline (when indicated) were used to determine whether the frequency of outcomes throughout the shift occurred in a statistically significant, nonlinear pattern RESULTS: Of the 82,851 patients eligible for inclusion, 47,262 (57%) had ratio data available and constituted the analyzable sample. Deliveries were evenly distributed throughout shifts, with 50.6% taking place in the first half of shifts. There were no statistically significant differences in the frequency of cesarean delivery, episiotomy, third- or fourth-degree perineal lacerations, or 5-minute Apgar scores of <4 based on the proportion of the shift completed. The findings were unchanged when evaluated with a cubic spline in unadjusted and adjusted logistic models. Sensitivity analyses performed on the 22.2% of patients who were delivered by a physician completing a 12-hour shift showed similar findings. There was a small increase in the frequency of neonatal intensive care unit admissions with a greater proportion of the shift completed (adjusted P=.009), but the findings did not persist in the sensitivity analysis. CONCLUSION Clinically significant differences in obstetrical interventions and outcomes do not seem to exist based on the temporal proximity to the attending physician's shift change. Future work should attempt to directly study unit culture and provider fatigue to further investigate opportunities to improve obstetrical quality of care, and additional studies are needed to corroborate these findings in community settings.
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Abstract
Heart disease is widely recognized as a major cause of death worldwide and is the leading cause of mortality in the United States. Centuries of research have focused on defining mechanistic alterations that drive cardiac pathogenesis, yet sudden cardiac death (SCD) remains a common unpredictable event that claims lives in every age group. The heart supplies blood to all tissues while maintaining a constant electrical and hormonal feedback communication with other parts of the body. As such, recent research has focused on understanding how myocardial electrical and structural properties are altered by cardiac metabolism and the various signaling pathways associated with it. The importance of cardiac metabolism in maintaining myocardial function, or lack thereof, is exemplified by shifts in cardiac substrate preference during normal development and various pathological conditions. For instance, a shift from fatty acid (FA) oxidation to oxygen-sparing glycolytic energy production has been reported in many types of cardiac pathologies. Compounded by an uncoupling of glycolysis and glucose oxidation this leads to accumulation of undesirable levels of intermediate metabolites. The resulting accumulation of intermediary metabolites impacts cardiac mitochondrial function and dysregulates metabolic pathways through several mechanisms, which will be reviewed here. Importantly, reversal of metabolic maladaptation has been shown to elicit positive therapeutic effects, limiting cardiac remodeling and at least partially restoring contractile efficiency. Therein, the underlying metabolic adaptations in an array of pathological conditions as well as recently discovered downstream effects of various substrate utilization provide guidance for future therapeutic targeting. Here, we will review recent data on alterations in substrate utilization in the healthy and diseased heart, metabolic pathways governing cardiac pathogenesis, mitochondrial function in the diseased myocardium, and potential metabolism-based therapeutic interventions in disease.
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Affiliation(s)
- J Snyder
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - R Zhai
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - A I Lackey
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - P Y Sato
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
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Castro AV, Wells M, Asmaro K, Sabedot TS, Mosella MS, Malta TM, Nelson K, Snyder J, deCarvalho A, Mukherjee A, Chitale D, Robin A, Rosenblum M, Mikkelsen T, Poisson LM, Lee I, Walbert T, Bhan A, Kalkanis S, Rock J, Noushmehr H. P01.02 Serum-derived DNA methylation markers distinguish functional and invasiveness subtypes in patients harboring pituitary tumors. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Molecular profiling of circulating biomarkers released by tumors has a relevant clinical value in central nervous system (CNS) tumors, but its feasibility has not been investigated in pituitary tumors (PT) despite being the second common intraaxial tumors of the CNS (~15%). Although usually benign and slow-growing, they can be nonfunctioning and invade surrounding structures resulting in significant comorbidities. DNA methylation aberrations distinguish PT according to their functional status but their role in invasiveness is still unclear. Pre-surgical detection of clinically relevant molecular markers associated with tumor behavior can address current diagnostic and therapeutic challenges. We hypothesized that PT release cell-free DNA (cfDNA) into the bloodstream allowing for the profiling of epigenetic markers associated with relevant clinicopathological features.
MATERIAL AND METHODS
Genome-wide methylome profile of paired serum cfDNA (EPIC array) and tissue from 13 patients with pituitary macroadenomas (9 males; median age: 62; 9 NFPT, 6 invasive) and 3 controls serum (patients with epilepsy).
RESULTS
Unsupervised analysis of the serum methylome from patients harboring PT was distinct from controls and other diseases (hypopituitarism, glioma and colorectal cancer) and supervised analysis (Wilcoxon Rank-sum Test) identified significant differentially methylated probes (DMP) that segregated PT from control serum specimens. Nonfunctioning and invasive-specific DMPs identified in the serum also defined functional, and less prominently invasive status, in the tissue of an independent cohort of PT.
CONCLUSION
This is the first study to show the feasibility to profile the methylome in the serum of patients with PT using cfDNA. In addition, we identified unique methylation signatures that distinguished PT according to functional and invasiveness subtypes. These results underpin the potential role of methylation profile and liquid biopsy as a noninvasive approach to assess clinically relevant molecular features in the serum of patients harboring PT.
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Affiliation(s)
- A V Castro
- Henry Ford Health System, Detroit, MI, United States
| | - M Wells
- Henry Ford Health System, Detroit, MI, United States
| | - K Asmaro
- Henry Ford Health System, Detroit, MI, United States
| | - T S Sabedot
- Henry Ford Health System, Detroit, MI, United States
| | - M S Mosella
- Henry Ford Health System, Detroit, MI, United States
| | - T M Malta
- Henry Ford Health System, Detroit, MI, United States
| | - K Nelson
- Henry Ford Health System, Detroit, MI, United States
| | - J Snyder
- Henry Ford Health System, Detroit, MI, United States
| | - A deCarvalho
- Henry Ford Health System, Detroit, MI, United States
| | - A Mukherjee
- Henry Ford Health System, Detroit, MI, United States
| | - D Chitale
- Henry Ford Health System, Detroit, MI, United States
| | - A Robin
- Henry Ford Health System, Detroit, MI, United States
| | - M Rosenblum
- Henry Ford Health System, Detroit, MI, United States
| | - T Mikkelsen
- Henry Ford Health System, Detroit, MI, United States
| | - L M Poisson
- Henry Ford Health System, Detroit, MI, United States
| | - I Lee
- Henry Ford Health System, Detroit, MI, United States
| | - T Walbert
- Henry Ford Health System, Detroit, MI, United States
| | - A Bhan
- Henry Ford Health System, Detroit, MI, United States
| | - S Kalkanis
- Henry Ford Health System, Detroit, MI, United States
| | - J Rock
- Henry Ford Health System, Detroit, MI, United States
| | - H Noushmehr
- Henry Ford Health System, Detroit, MI, United States
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6
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Noushmehr H, Sabedot T, Malta T, Nelson K, Snyder J, Wells M, deCarvalho A, Mukherjee A, Chitale D, Mosella M, Asmaro K, Robin A, Rosenblum M, Mikkelsen T, Rock J, Poisson L, Walbert T, Kalkanis S, Castro A. OS1.5 Detection of glioma and prognostic subtypes by non-invasive circulating cell-free DNA methylation markers. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND: Genome-wide DNA methylation profiling has shown that epigenetic abnormalities are biologically important in glioma and can be used to classify these tumors into distinct prognostic groups. Thus far, DNA profiling has required surgically resected glioma tissue; however, gliomas release tumoral material into biofluids providing an opportunity for a minimally invasive testing. While prior studies have shown that molecular markers can be detected in liquid biopsy (LB), there has been low sensitivity for tumor-specific markers. We hypothesize that the low sensitivity is due to the targeted assay methods. METHODS: Genome-wide CpG methylation levels in DNA of tumor tissue and cell-free DNA serum of glioma patients. RESULTS: We defined glioma-specific and IDH-specific epigenetic LB (eLB) signatures (Glioma-eLB and IDH-eLB, respectively) from serum cell-free DNA from patients diagnosed with glioma (N=15 IDH mutant and N=7 IDH wildtype) and with epilepsy (N=3). The epigenetic profiles of the matched tissue demonstrate that these eLB signatures reflected the signature of the tumor. Through cross-validation we show that Glioma-eLB can accurately predict a patient’s glioma from those with other neoplasias (N=6 Colon; N=14 Pituitary; N=3 Breast; N=4 Lung), non-neoplastic immunological conditions (N=22 sepsis; N=9 pancreatic islet transplantation), and from healthy individuals (sensitivity: 98%; specificity: 99%). Finally, IDH-eLB includes promoter methylated markers associated with genes known to be involved in glioma tumorigenesis (PVT1 and CXCR6). CONCLUSIONS: The application of the non-invasive eLB signature discovered in this study has the potential to complement the standard of care for patients harboring glioma.
This project is supported by the Henry Ford Health System, Department of Neurosurgery and the Hermelin Brain Tumor Center Foundation (A30935), United States National Institutes of Health (R01CA222146), and United States Department of Defense (CA170278)
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Affiliation(s)
- H Noushmehr
- Henry Ford Health System, Detroit, MI, United States
| | - T Sabedot
- Henry Ford Health System, Detroit, MI, United States
| | - T Malta
- Henry Ford Health System, Detroit, MI, United States
| | - K Nelson
- Henry Ford Health System, Detroit, MI, United States
| | - J Snyder
- Henry Ford Health System, Detroit, MI, United States
| | - M Wells
- Henry Ford Health System, Detroit, MI, United States
| | - A deCarvalho
- Henry Ford Health System, Detroit, MI, United States
| | - A Mukherjee
- Henry Ford Health System, Detroit, MI, United States
| | - D Chitale
- Henry Ford Health System, Detroit, MI, United States
| | - M Mosella
- Henry Ford Health System, Detroit, MI, United States
| | - K Asmaro
- Henry Ford Health System, Detroit, MI, United States
| | - A Robin
- Henry Ford Health System, Detroit, MI, United States
| | - M Rosenblum
- Henry Ford Health System, Detroit, MI, United States
| | - T Mikkelsen
- Henry Ford Health System, Detroit, MI, United States
| | - J Rock
- Henry Ford Health System, Detroit, MI, United States
| | - L Poisson
- Henry Ford Health System, Detroit, MI, United States
| | - T Walbert
- Henry Ford Health System, Detroit, MI, United States
| | - S Kalkanis
- Henry Ford Health System, Detroit, MI, United States
| | - A Castro
- Henry Ford Health System, Detroit, MI, United States
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Tao R, Chen Y, Lloyd S, Poppe M, Gaffney D, Glenn M, Lee C, Smith K, Fraser A, Deshmukh V, Newmann M, Herget K, Snyder J, Rowe K, Hashibe M. Mental Health Disorders among Hodgkin Lymphoma Survivors in a Population-based Cohort Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang T, Guilherme E, Kesici A, Vila-Rodriguez F, Snyder J. Differential effects of trancranial magnetic stimulation and electroconvulsive stimulation on adult hippocampal neurogenesis in mice. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Vila F, Snyder J, Zhang T. ECS-induced neurogenesis and congitive side effects. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Burt L, Chen Y, Deshmukh V, Newmann M, Rowe K, Snyder J, Wan Y, Fraser A, Smith K, Herget K, Gaffney D, Hashibe M. Development of Mental Health Disorders in Endometrial Cancer Survivors and the Impact on Overall Survival – A Population-Based Cohort Study. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li Y, Polakovic T, Curtis J, Shumlas S, Chatterjee S, Intikhab S, Chareev D, Volkova O, Vasiliev A, Karapetrov G, Snyder J. Tuning the activity/stability balance of anion doped CoS Se2− dichalcogenides. J Catal 2018. [DOI: 10.1016/j.jcat.2018.07.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Tita AT, Jablonski KA, Bailit JL, Grobman WA, Wapner RJ, Reddy UM, Varner MW, Thorp JM, Leveno KJ, Caritis SN, Iams JD, Saade G, Sorokin Y, Rouse DJ, Blackwell SC, Tolosa JE, Wallace M, Northen A, Grant J, Colquitt C, Mallett G, Ramos-Brinson M, Roy A, Stein L, Campbell P, Collins C, Jackson N, Dinsmoor M, Senka J, Paychek K, Peaceman A, Talucci M, Zylfijaj M, Reid Z, Leed R, Benson J, Forester S, Kitto C, Davis S, Falk M, Perez C, Hill K, Sowles A, Postma J, Alexander S, Andersen G, Scott V, Morby V, Jolley K, Miller J, Berg B, Dorman K, Mitchell J, Kaluta E, Clark K, Spicer K, Timlin S, Wilson K, Moseley L, Santillan M, Price J, Buentipo K, Bludau V, Thomas T, Fay L, Melton C, Kingsbery J, Benezue R, Simhan H, Bickus M, Fischer D, Kamon T, DeAngelis D, Mercer B, Milluzzi C, Dalton W, Dotson T, McDonald P, Brezine C, McGrail A, Latimer C, Guzzo L, Johnson F, Gerwig L, Fyffe S, Loux D, Frantz S, Cline D, Wylie S, Shubert P, Moss J, Salazar A, Acosta A, Hankins G, Hauff N, Palmer L, Lockhart P, Driscoll D, Wynn L, Sudz C, Dengate D, Girard C, Field S, Breault P, Smith F, Annunziata N, Allard D, Silva J, Gamage M, Hunt J, Tillinghast J, Corcoran N, Jimenez M, Ortiz F, Givens P, Rech B, Moran C, Hutchinson M, Spears Z, Carreno C, Heaps B, Zamora G, Seguin J, Rincon M, Snyder J, Farrar C, Lairson E, Bonino C, Smith W, Beach K, Van Dyke S, Butcher S, Thom E, Zhao Y, McGee P, Momirova V, Palugod R, Reamer B, Larsen M, Spong C, Tolivaisa S, VanDorsten J. Neonatal outcomes of elective early-term births after demonstrated fetal lung maturity. Am J Obstet Gynecol 2018; 219:296.e1-296.e8. [PMID: 29800541 DOI: 10.1016/j.ajog.2018.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 11/09/2016] [Accepted: 05/14/2018] [Indexed: 10/16/2022]
Abstract
BACKGROUND Studies of early-term birth after demonstrated fetal lung maturity show that respiratory and other outcomes are worse with early-term birth (370-386 weeks) even after demonstrated fetal lung maturity when compared with full-term birth (390-406 weeks). However, these studies included medically indicated births and are therefore potentially limited by confounding by the indication for delivery. Thus, the increase in adverse outcomes might be due to the indication for early-term birth rather than the early-term birth itself. OBJECTIVE We examined the prevalence and risks of adverse neonatal outcomes associated with early-term birth after confirmed fetal lung maturity as compared with full-term birth in the absence of indications for early delivery. STUDY DESIGN This is a secondary analysis of an observational study of births to 115,502 women in 25 hospitals in the United States from 2008 through 2011. Singleton nonanomalous births at 37-40 weeks with no identifiable indication for delivery were included; early-term births after positive fetal lung maturity testing were compared with full-term births. The primary outcome was a composite of death, ventilator for ≥2 days, continuous positive airway pressure, proven sepsis, pneumonia or meningitis, treated hypoglycemia, hyperbilirubinemia (phototherapy), and 5-minute Apgar <7. Logistic regression and propensity score matching (both 1:1 and 1:2) were used. RESULTS In all, 48,137 births met inclusion criteria; the prevalence of fetal lung maturity testing in the absence of medical or obstetric indications for early delivery was 0.52% (n = 249). There were 180 (0.37%) early-term births after confirmed pulmonary maturity and 47,957 full-term births. Women in the former group were more likely to be non-Hispanic white, smoke, have received antenatal steroids, have induction, and have a cesarean. Risks of the composite (16.1% vs 5.4%; adjusted odds ratio, 3.2; 95% confidence interval, 2.1-4.8 from logistic regression) were more frequent with elective early-term birth. Propensity scores matching confirmed the increased primary composite in elective early-term births: adjusted odds ratios, 4.3 (95% confidence interval, 1.8-10.5) for 1:1 and 3.5 (95% confidence interval, 1.8-6.5) for 1:2 matching. Among components of the primary outcome, CPAP use and hyperbilirubinemia requiring phototherapy were significantly increased. Transient tachypnea of the newborn, neonatal intensive care unit admission, and prolonged neonatal intensive care unit stay (>2 days) were also increased with early-term birth. CONCLUSION Even with confirmed pulmonary maturity, early-term birth in the absence of medical or obstetric indications is associated with worse neonatal respiratory and hepatic outcomes compared with full-term birth, suggesting relative immaturity of these organ systems in early-term births.
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Lo NC, Snyder J, Addiss DG, Heft-Neal S, Andrews JR, Bendavid E. Deworming in pre-school age children: A global empirical analysis of health outcomes. PLoS Negl Trop Dis 2018; 12:e0006500. [PMID: 29852012 PMCID: PMC5997348 DOI: 10.1371/journal.pntd.0006500] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 06/12/2018] [Accepted: 05/04/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND There is debate over the effectiveness of deworming children against soil-transmitted helminthiasis (STH) to improve health outcomes, and current evidence may be limited in study design and generalizability. However, programmatic deworming continues throughout low and middle-income countries. METHODOLOGY AND PRINCIPAL FINDINGS We performed an empirical evaluation of the relationship between deworming in pre-school age children (ages 1-4 years) within the previous 6 months, as proxy-reported by the mother, and health outcomes of weight, height, and hemoglobin. We used nationally representative cross-sectional data from 45 countries using the Demographic and Health Surveys (DHS) during the period 2005-2016. We used logistic regression with coarsened exact matching, fixed effects for survey and year, and person-level covariates. We included data on 325,115 children in 45 STH-endemic countries from 66 DHS surveys. Globally in STH-endemic countries, children who received deworming treatment were less likely to be stunted (1.2 percentage point decline from mean of 36%; 95% CI [-1.9, -0.5%]; p<0.001), but we did not detect consistent associations between deworming and anemia or weight. In sub-Saharan Africa, we found that children who received deworming treatment were less likely to be stunted (1.1 percentage point decline from mean of 36%; 95% CI [-2.1, -0.2%]; p = 0.01) and less likely to have anemia (1.8 percentage point decline from mean of 58%; 95% CI [-2.8, -0.7%]; p<0.001), but we did not detect consistent associations between deworming and weight. These findings were robust across multiple statistical models, and we did not find consistently measurable associations with data from non-endemic settings. CONCLUSIONS AND SIGNIFICANCE Among pre-school age children, we detected a robust and consistent association between deworming and reduced stunting, with additional evidence for reduced anemia in sub-Saharan Africa. We did not find a consistent relationship between deworming and improved weight. This global empirical analysis provides evidence to support the deworming of pre-school age children.
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Affiliation(s)
- Nathan C. Lo
- Division of Epidemiology, Stanford University School of Medicine, Stanford, CA, United States of America
- Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Jedidiah Snyder
- Children Without Worms, Task Force for Global Health, Decatur, GA, United States of America
- Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
| | - David G. Addiss
- Children Without Worms, Task Force for Global Health, Decatur, GA, United States of America
| | - Sam Heft-Neal
- Department of Earth System Science, Stanford University, Stanford, CA, United States of America
| | - Jason R. Andrews
- Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Eran Bendavid
- Primary Care and Population Health, Stanford University, Stanford, CA, United States of America
- Center for Health Policy and the Center for Primary Care and Outcomes Research, Stanford University, Stanford, CA, United States of America
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Snyder J. P21.06 The Role of Neuro-oncology Tumor Boards at Academic Centers in the United States. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Manuck TA, Rice MM, Bailit JL, Grobman WA, Reddy UM, Wapner RJ, Thorp JM, Caritis SN, Prasad M, Tita AT, Saade GR, Sorokin Y, Rouse DJ, Blackwell SC, Tolosa JE, Varner M, Hill K, Sowles A, Postma J, Alexander S, Andersen G, Scott V, Morby V, Jolley K, Miller J, Berg B, Talucci M, Zylfijaj M, Reid Z, Leed R, Benson J, Forester S, Kitto C, Davis S, Falk M, Perez C, Dorman K, Mitchell J, Kaluta E, Clark K, Spicer K, Timlin S, Wilson K, Leveno K, Moseley L, Santillan M, Price J, Buentipo K, Bludau V, Thomas T, Fay L, Melton C, Kingsbery J, Benezue R, Simhan H, Bickus M, Fischer D, Kamon T, DeAngelis D, Mercer B, Milluzzi C, Dalton W, Dotson T, McDonald P, Brezine C, McGrail A, Latimer C, Guzzo L, Johnson F, Gerwig L, Fyffe S, Loux D, Frantz S, Cline D, Wylie S, Iams J, Wallace M, Northen A, Grant J, Colquitt C, Rouse D, Andrews W, Mallett G, Ramos-Brinson M, Roy A, Stein L, Campbell P, Collins C, Jackson N, Dinsmoor M, Senka J, Paychek K, Peaceman A, Moss J, Salazar A, Acosta A, Hankins G, Hauff N, Palmer L, Lockhart P, Driscoll D, Wynn L, Sudz C, Dengate D, Girard C, Field S, Breault P, Smith F, Annunziata N, Allard D, Silva J, Gamage M, Hunt J, Tillinghast J, Corcoran N, Jimenez M, Ortiz F, Givens P, Rech B, Moran C, Hutchinson M, Spears Z, Carreno C, Heaps B, Zamora G, Seguin J, Rincon M, Snyder J, Farrar C, Lairson E, Bonino C, Smith W, Beach K, Van Dyke S, Butcher S, Thom E, Zhao Y, McGee P, Momirova V, Palugod R, Reamer B, Larsen M, Williams T, Spangler T, Lozitska A, Spong C, Tolivaisa S, VanDorsten J. Preterm neonatal morbidity and mortality by gestational age: a contemporary cohort. Am J Obstet Gynecol 2016; 215:103.e1-103.e14. [PMID: 26772790 DOI: 10.1016/j.ajog.2016.01.004] [Citation(s) in RCA: 290] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/28/2015] [Accepted: 01/02/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND Although preterm birth <37 weeks' gestation is the leading cause of neonatal morbidity and mortality in the United States, the majority of data regarding preterm neonatal outcomes come from older studies, and many reports have been limited to only very preterm neonates. Delineation of neonatal outcomes by delivery gestational age is needed to further clarify the continuum of mortality and morbidity frequencies among preterm neonates. OBJECTIVE We sought to describe the contemporary frequencies of neonatal death, neonatal morbidities, and neonatal length of stay across the spectrum of preterm gestational ages. STUDY DESIGN This was a secondary analysis of an obstetric cohort of 115,502 women and their neonates who were born in 25 hospitals nationwide, 2008 through 2011. All liveborn nonanomalous singleton preterm (23.0-36.9 weeks of gestation) neonates were included in this analysis. The frequency of neonatal death, major neonatal morbidity (intraventricular hemorrhage grade III/IV, seizures, hypoxic-ischemic encephalopathy, necrotizing enterocolitis stage II/III, bronchopulmonary dysplasia, persistent pulmonary hypertension), and minor neonatal morbidity (hypotension requiring treatment, intraventricular hemorrhage grade I/II, necrotizing enterocolitis stage I, respiratory distress syndrome, hyperbilirubinemia requiring treatment) were calculated by delivery gestational age; each neonate was classified once by the worst outcome for which criteria was met. RESULTS In all, 8334 deliveries met inclusion criteria. There were 119 (1.4%) neonatal deaths. In all, 657 (7.9%) neonates had major morbidity, 3136 (37.6%) had minor morbidity, and 4422 (53.1%) survived without any of the studied morbidities. Deaths declined rapidly with each advancing week of gestation. This decline in death was accompanied by an increase in major neonatal morbidity, which peaked at 54.8% at 25 weeks of gestation. As frequencies of death and major neonatal morbidity fell, minor neonatal morbidity increased, peaking at 81.7% at 31 weeks of gestation. The frequency of all morbidities fell >32 weeks. After 25 weeks, neonatal length of hospital stay decreased significantly with each additional completed week of pregnancy; among babies delivered from 26-32 weeks of gestation, each additional week in utero reduced the subsequent length of neonatal hospitalization by a minimum of 8 days. The median postmenstrual age at discharge nadired around 36 weeks' postmenstrual age for babies born at 31-35 weeks of gestation. CONCLUSION Our data show that there is a continuum of outcomes, with each additional week of gestation conferring survival benefit while reducing the length of initial hospitalization. These contemporary data can be useful for patient counseling regarding preterm outcomes.
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Poole PL, Willis C, Daskalova RL, George KM, Feister S, Jiang S, Snyder J, Marketon J, Schumacher DW, Akli KU, Van Woerkom L, Freeman RR, Chowdhury EA. Experimental capabilities of 0.4 PW, 1 shot/min Scarlet laser facility for high energy density science. Appl Opt 2016; 55:4713-4719. [PMID: 27409030 DOI: 10.1364/ao.55.004713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report on the recently completed 400 TW upgrade to the Scarlet laser at The Ohio State University. Scarlet is a Ti:sapphire-based ultrashort pulse system that delivers >10 J in 30 fs pulses to a 2 μm full width at half-maximum focal spot, resulting in intensities exceeding 5×1021 W/cm2. The laser fires at a repetition rate of once per minute and is equipped with a suite of on-demand and on-shot diagnostics detailed here, allowing for rapid collection of experimental statistics. As part of the upgrade, the entire laser system has been redesigned to facilitate consistent, characterized high intensity data collection at high repetition rates. The design and functionality of the laser and target chambers are described along with initial data from commissioning experimental shots.
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Unudurthi SD, Wu X, Qian L, Amari F, Onal B, Li N, Makara MA, Smith SA, Snyder J, Fedorov VV, Coppola V, Anderson ME, Mohler PJ, Hund TJ. Two-Pore K+ Channel TREK-1 Regulates Sinoatrial Node Membrane Excitability. J Am Heart Assoc 2016; 5:e002865. [PMID: 27098968 PMCID: PMC4859279 DOI: 10.1161/jaha.115.002865] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Two‐pore K+ channels have emerged as potential targets to selectively regulate cardiac cell membrane excitability; however, lack of specific inhibitors and relevant animal models has impeded the effort to understand the role of 2‐pore K+ channels in the heart and their potential as a therapeutic target. The objective of this study was to determine the role of mechanosensitive 2‐pore K+ channel family member TREK‐1 in control of cardiac excitability. Methods and Results Cardiac‐specific TREK‐1–deficient mice (αMHC‐Kcnkf/f) were generated and found to have a prevalent sinoatrial phenotype characterized by bradycardia with frequent episodes of sinus pause following stress. Action potential measurements from isolated αMHC‐Kcnk2f/f sinoatrial node cells demonstrated decreased background K+ current and abnormal sinoatrial cell membrane excitability. To identify novel pathways for regulating TREK‐1 activity and sinoatrial node excitability, mice expressing a truncated allele of the TREK‐1–associated cytoskeletal protein βIV‐spectrin (qv4J mice) were analyzed and found to display defects in cell electrophysiology as well as loss of normal TREK‐1 membrane localization. Finally, the βIV‐spectrin/TREK‐1 complex was found to be downregulated in the right atrium from a canine model of sinoatrial node dysfunction and in human cardiac disease. Conclusions These findings identify a TREK‐1–dependent pathway essential for normal sinoatrial node cell excitability that serves as a potential target for selectively regulating sinoatrial node cell function.
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Affiliation(s)
- Sathya D Unudurthi
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
| | - Xiangqiong Wu
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
| | - Lan Qian
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
| | - Foued Amari
- Department of Molecular Virology, Immunology & Medical Genetics, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Birce Onal
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
| | - Ning Li
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Physiology & Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Michael A Makara
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Physiology & Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Sakima A Smith
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Jedidiah Snyder
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
| | - Vadim V Fedorov
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Physiology & Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Vincenzo Coppola
- Department of Molecular Virology, Immunology & Medical Genetics, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Mark E Anderson
- Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD
| | - Peter J Mohler
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Physiology & Cell Biology, The Ohio State University Wexner Medical Center, Columbus, OH Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Thomas J Hund
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH
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Jiang S, Ji LL, Audesirk H, George KM, Snyder J, Krygier A, Poole P, Willis C, Daskalova R, Chowdhury E, Lewis NS, Schumacher DW, Pukhov A, Freeman RR, Akli KU. Microengineering Laser Plasma Interactions at Relativistic Intensities. Phys Rev Lett 2016; 116:085002. [PMID: 26967419 DOI: 10.1103/physrevlett.116.085002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 06/05/2023]
Abstract
We report on the first successful proof-of-principle experiment to manipulate laser-matter interactions on microscales using highly ordered Si microwire arrays. The interaction of a high-contrast short-pulse laser with a flat target via periodic Si microwires yields a substantial enhancement in both the total and cutoff energies of the produced electron beam. The self-generated electric and magnetic fields behave as an electromagnetic lens that confines and guides electrons between the microwires as they acquire relativistic energies via direct laser acceleration.
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Affiliation(s)
- S Jiang
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - L L Ji
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - H Audesirk
- Division of Chemistry and Chemical Engineering, 127-72 Noyes Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - K M George
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - J Snyder
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - A Krygier
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - P Poole
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - C Willis
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - R Daskalova
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - E Chowdhury
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - N S Lewis
- Division of Chemistry and Chemical Engineering, 127-72 Noyes Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - D W Schumacher
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - A Pukhov
- Heinrich-Heine University of Dusseldorf, 40225 Dusseldorf, Germany
| | - R R Freeman
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - K U Akli
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
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Aristizabal F, Nieto J, Guedes A, Dechant J, Yamout S, Morales B, Snyder J. Comparison of two tourniquet application times for regional intravenous limb perfusions with amikacin in sedated or anesthetized horses. Vet J 2016; 208:50-4. [DOI: 10.1016/j.tvjl.2015.10.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/04/2015] [Accepted: 10/05/2015] [Indexed: 11/17/2022]
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Jones MD, Kohley Z, Baumann T, Christian G, DeYoung PA, Finck JE, Frank N, Haring-Kaye RA, Kuchera AN, Luther B, Mosby S, Smith JK, Snyder J, Spyrou A, Stephenson SL, Thoennessen M. Search for 4 ncontributions in the reaction 14Be(CH 2,X) 10He. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611306006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mack D, Poulard K, Goddard M, Snyder J, Grange R, Doering J, Strande J, Latournerie V, Veron P, Yang L, Buscara L, Le Bec C, Martin S, O'Callaghan M, Mingozzi F, Beggs A, Lawlor M, Mavilio F, Childers M, Buj-Bello A. Peripheral vein injection of AAV8-MTM1 leads to long-term survival and correction of severe muscle pathology in a canine model of X-linked myotubular myopathy: Results from a dose escalation study. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wise EM, Henao JP, Gomez H, Snyder J, Roolf P, Orebaugh SL. The impact of a cadaver-based airway lab on critical care fellows' direct laryngoscopy skills. Anaesth Intensive Care 2015; 43:224-9. [PMID: 25735689 DOI: 10.1177/0310057x1504300213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study sought to determine the impact of a cadaver-based airway lab on critical care medicine fellows' direct laryngoscopy skills and hypothesised that fellows can improve their self-reported percentage of glottic opening (POGO) scores in cadaver models to achieve POGO scores similar to that of expert faculty. Nineteen fellows attended an airway management skills laboratory utilising five modified cadavers. Initial fellow POGO (POGOi) visualised was recorded at the onset with direct laryngoscopy. Maximum fellow POGO score with optimised direct laryngoscopy was recorded after two additional hours of teaching and also during a testing phase several days later. Data was assessed for significant differences between trainee POGO scores at each time interval and between trainee POGO scores and expert scores. A departmental procedural database was utilised to examine success rates of intubation as a clinical correlation. Fellows' mean POGOi scores, averaged across all five specimens, were significantly lower than both their maximum POGO scores and their testing phase POGO scores. Mean POGOi scores for fellows, averaged over all five cadavers, were lower than the instructors' POGOi scores. There was no difference between fellows' and instructors' mean maximum POGO or mean testing phase POGO scores. Clinical success rates of intubation were over 98%. A short training session using modified cadavers can be utilised to teach new critical care medicine fellows additional techniques for airway management and assist them in obtaining higher POGO scores, similar to those of expert instructors. Success rates of clinical intubations were favourable in the wake of this training.
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Affiliation(s)
- E M Wise
- Department of Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - J P Henao
- Department of Anesthesiology, Boston Children's Hospital, Harvard University School of Medicine, Boston, Massachusetts, USA
| | - H Gomez
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - J Snyder
- Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - P Roolf
- Center for Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - S L Orebaugh
- Departments of Anesthesiology and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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Bailit JL, Grobman W, Zhao Y, Wapner RJ, Reddy UM, Varner MW, Leveno KJ, Caritis SN, Iams JD, Tita AT, Saade G, Sorokin Y, Rouse DJ, Blackwell SC, Tolosa JE, VanDorsten JP, Mercer B, Milluzzi C, Dalton W, Dotson T, McDonald P, Brezine C, McGrail A, Mallett G, Ramos-Brinson M, Roy A, Stein L, Campbell P, Collins C, Jackson N, Dinsmoor M, Senka J, Paychek K, Peaceman A, Talucci M, Zylfijaj M, Reid Z, Leed R, Benson J, Forester S, Kitto C, Davis S, Falk M, Perez C, Hill K, Sowles A, Postma J, Alexander S, Andersen G, Scott V, Morby V, Jolley K, Miller J, Berg B, Thorp J, Dorman K, Mitchell J, Kaluta E, Clark K, Spicer K, Timlin S, Wilson K, Moseley L, Santillan M, Price J, Buentipo K, Bludau V, Thomas T, Fay L, Melton C, Kingsbery J, Benezue R, Simhan H, Bickus M, Fischer D, Kamon T, DeAngelis D, Shubert P, Latimer C, Guzzo L, Johnson F, Gerwig L, Fyffe S, Loux D, Frantz S, Cline D, Wylie S, Iams J, Wallace M, Northen A, Grant J, Colquitt C, Moss J, Salazar A, Acosta A, Hankins G, Hauff N, Palmer L, Lockhart P, Driscoll D, Wynn L, Sudz C, Dengate D, Girard C, Field S, Breault P, Smith F, Annunziata N, Allard D, Silva J, Gamage M, Hunt J, Tillinghast J, Corcoran N, Jimenez M, Ortiz F, Givens P, Rech B, Moran C, Hutchinson M, Spears Z, Carreno C, Heaps B, Zamora G, Seguin J, Rincon M, Snyder J, Farrar C, Lairson E, Bonino C, Smith W, Beach K, Van Dyke S, Butcher S, Thom E, Rice M, McGee P, Momirova V, Palugod R, Reamer B, Larsen M, Williams T, Spong C, Tolivaisa S. Nonmedically indicated induction vs expectant treatment in term nulliparous women. Am J Obstet Gynecol 2015; 212:103.e1-7. [PMID: 24983681 DOI: 10.1016/j.ajog.2014.06.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/27/2014] [Accepted: 06/23/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The purpose of this study was to compare maternal and neonatal outcomes in nulliparous women with nonmedically indicated inductions at term vs those expectantly treated. STUDY DESIGN Data were obtained from maternal and neonatal charts for all deliveries on randomly selected days across 25 US hospitals over a 3-year period. A low-risk subset of nulliparous women with vertex nonanomalous singleton gestations who delivered 38 0/7 to 41 6/7 weeks were selected. Maternal and neonatal outcomes for nonmedically indicated induction within each week were compared with women who did not undergo nonmedically indicated induction during that week. Multivariable analysis was used to adjust for hospital, maternal age, race/ethnicity, body mass index, cigarette use, and insurance status. RESULTS We found 31,169 women who met our criteria. Neonatal complications were either less frequent with nonmedically indicated induction or no different between groups. Nonmedically indicated induction was associated with less frequent peripartum infections (odds ratio [OR], 0.39; 95% confidence interval [CI], 0.16-0.98) at 38 weeks of gestation and less frequent third- and fourth-degree lacerations (OR, 0.60; 95% CI, 0.42-0.86) and less frequent peripartum infections (OR, 0.66; 95% CI, 0.49-0.90) at 39 weeks of gestation. Nonmedically indicated induction was associated with a longer admission-to-delivery time by approximately 3-4 hours and increased odds of cesarean delivery at 38 (OR, 1.50; 95% CI, 1.08-2.08) and 40 weeks (OR, 1.30; 95% CI, 1.15-1.46) of gestation. CONCLUSION At 39 weeks of gestation, nonmedically indicated induction is associated with lower maternal and neonatal morbidity than women who are expectantly treated.
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Snyder J, Skeans M, Salkowski N, Leppke S, Wainright J, Leighton T, Israni A, Kasiske B, Segev D. Current State of Living Kidney Donor Follow-Up in the United States and the New OPTN Reporting Requirements. Transplantation 2014. [DOI: 10.1097/00007890-201407151-02897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Engels EA, Castenson D, Pfeiffer RM, Kahn A, Pawlish K, Goodman MT, Nalesnik MA, Israni AK, Snyder J, Kasiske B. Cancers among US organ donors: a comparison of transplant and cancer registry diagnoses. Am J Transplant 2014; 14:1376-82. [PMID: 24712385 DOI: 10.1111/ajt.12683] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 01/03/2014] [Accepted: 01/19/2014] [Indexed: 01/25/2023]
Abstract
Transmission of cancer is a life-threatening complication of transplantation. Monitoring transplantation practice requires complete recording of donor cancers. The US Scientific Registry of Transplant Recipients (SRTR) captures cancers in deceased donors (beginning in 1994) and living donors (2004). We linked the SRTR (52,599 donors, 110,762 transplants) with state cancer registries. Cancer registries identified cancers in 519 donors: 373 deceased donors (0.9%) and 146 living donors (1.2%). Among deceased donors, 50.7% of cancers were brain tumors. Among living donors, 54.0% were diagnosed after donation; most were cancers common in the general population (e.g. breast, prostate). There were 1063 deceased donors with cancer diagnosed in the SRTR or cancer registry, and the SRTR lacked a cancer diagnosis for 107 (10.1%) of these. There were 103 living donors with cancer before or at donation, diagnosed in the SRTR or cancer registry, and the SRTR did not have a cancer diagnosis for 43 (41.7%) of these. The SRTR does not record cancers after donation in living donors and so missed 81 cancers documented in cancer registries. In conclusion, donor cancers are uncommon, but lack of documentation of some cases highlights a need for improved ascertainment and reporting by organ procurement organizations and transplant programs.
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Affiliation(s)
- E A Engels
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
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Snyder J. Book Review: Veterinary Neuropathology: Essentials of Theory and Practice. Vet Pathol 2014. [DOI: 10.1177/0300985813513017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- J. Snyder
- Department of Comparative Medicine, Box 357190, University of Washington, Seattle, WA, USA
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Aristizabal F, Nieto J, Yamout S, Snyder J. The effect of a hay grid feeder on feed consumption and measurement of the gastric pH using an intragastric electrode device in horses: A preliminary report. Equine Vet J 2013; 46:484-7. [DOI: 10.1111/evj.12175] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Aristizabal
- The William R. Pritchard Veterinary Medical Teaching Hospital; University of California; Davis USA
| | - J. Nieto
- Comparative Gastrointestinal Laboratory; Department of Veterinary Surgical and Radiological Sciences; University of California; Davis USA
| | - S. Yamout
- The William R. Pritchard Veterinary Medical Teaching Hospital; University of California; Davis USA
| | - J. Snyder
- Comparative Gastrointestinal Laboratory; Department of Veterinary Surgical and Radiological Sciences; University of California; Davis USA
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Axelrod DA, Snyder J, Kasiske B. Transplant wobegon: where all the organs are used, all the patients are transplanted, and all programs are above average. Am J Transplant 2013; 13:1947-8. [PMID: 23890282 DOI: 10.1111/ajt.12327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 04/20/2013] [Accepted: 04/22/2013] [Indexed: 01/25/2023]
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Kohley Z, Baumann T, Bazin D, Christian G, DeYoung PA, Finck JE, Frank N, Jones M, Lunderberg E, Luther B, Mosby S, Nagi T, Smith JK, Snyder J, Spyrou A, Thoennessen M. Study of two-neutron radioactivity in the decay of 26O. Phys Rev Lett 2013; 110:152501. [PMID: 25167255 DOI: 10.1103/physrevlett.110.152501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 06/03/2023]
Abstract
A new technique was developed to measure the lifetimes of neutron unbound nuclei in the picosecond range. The decay of 26O→24O+n+n was examined as it had been predicted to have an appreciable lifetime due to the unique structure of the neutron-rich oxygen isotopes. The half-life of 26O was extracted as 4.5(-1.5)(+1.1)(stat)±3(syst) ps. This corresponds to 26O having a finite lifetime at an 82% confidence level and, thus, suggests the possibility of two-neutron radioactivity.
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Affiliation(s)
- Z Kohley
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Baumann
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Bazin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - G Christian
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - P A DeYoung
- Department of Physics, Hope College, Holland, Michigan 49423, USA
| | - J E Finck
- Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
| | - N Frank
- Department of Physics and Astronomy, Augustana College, Rock Island, Illinois 61201, USA
| | - M Jones
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - E Lunderberg
- Department of Physics, Hope College, Holland, Michigan 49423, USA
| | - B Luther
- Department of Physics, Concordia College, Moorhead, Minnesota 56562, USA
| | - S Mosby
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Nagi
- Department of Physics, Hope College, Holland, Michigan 49423, USA
| | - J K Smith
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Snyder
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Spyrou
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Thoennessen
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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DeGrande ST, Little SC, Nixon DJ, Wright P, Snyder J, Dun W, Murphy N, Kilic A, Higgins R, Binkley PF, Boyden PA, Carnes CA, Anderson ME, Hund TJ, Mohler PJ. Molecular mechanisms underlying cardiac protein phosphatase 2A regulation in heart. J Biol Chem 2013; 288:1032-46. [PMID: 23204520 PMCID: PMC3542989 DOI: 10.1074/jbc.m112.426957] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/21/2012] [Indexed: 11/06/2022] Open
Abstract
Kinase/phosphatase balance governs cardiac excitability in health and disease. Although detailed mechanisms for cardiac kinase regulation are established, far less is known regarding cardiac protein phosphatase 2A (PP2A) regulation. This is largely due to the complexity of the PP2A holoenzyme structure (combinatorial assembly of three subunit enzyme from >17 subunit genes) and the inability to segregate "global" PP2A function from the activities of multiple "local" holoenzyme populations. Here we report that PP2A catalytic, regulatory, and scaffolding subunits are tightly regulated at transcriptional, translational, and post-translational levels to tune myocyte function at base line and in disease. We show that past global read-outs of cellular PP2A activity more appropriately represent the collective activity of numerous individual PP2A holoenzymes, each displaying a specific subcellular localization (dictated by select PP2A regulatory subunits) as well as local specific post-translational catalytic subunit methylation and phosphorylation events that regulate local and rapid holoenzyme assembly/disassembly (via leucine carboxymethyltransferase 1/phosphatase methylesterase 1 (LCMT-1/PME-1). We report that PP2A subunits are selectively regulated between human and animal models, across cardiac chambers, and even within specific cardiac cell types. Moreover, this regulation can be rapidly tuned in response to cellular activation. Finally, we report that global PP2A is altered in human and experimental models of heart disease, yet each pathology displays its own distinct molecular signature though specific PP2A subunit modulatory events. These new data provide an initial view into the signaling pathways that govern PP2A function in heart but also establish the first step in defining specific PP2A regulatory targets in health and disease.
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Affiliation(s)
- Sean T. DeGrande
- From The Dorothy M. Davis Heart and Lung Research Institute
- Department of Internal Medicine, Division of Cardiovascular Medicine
- the Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, Iowa 52242, and
| | - Sean C. Little
- From The Dorothy M. Davis Heart and Lung Research Institute
| | - Derek J. Nixon
- From The Dorothy M. Davis Heart and Lung Research Institute
| | - Patrick Wright
- From The Dorothy M. Davis Heart and Lung Research Institute
| | - Jedidiah Snyder
- From The Dorothy M. Davis Heart and Lung Research Institute
- Department of Internal Medicine, Division of Cardiovascular Medicine
- College of Engineering, Department of Biomedical Engineering, and
| | - Wen Dun
- the Department of Pharmacology, Columbia University, New York, New York 10032
| | | | - Ahmet Kilic
- From The Dorothy M. Davis Heart and Lung Research Institute
- Division of Cardiac Surgery, The Ohio State University Wexner Medical Center
| | - Robert Higgins
- From The Dorothy M. Davis Heart and Lung Research Institute
- Division of Cardiac Surgery, The Ohio State University Wexner Medical Center
| | - Philip F. Binkley
- From The Dorothy M. Davis Heart and Lung Research Institute
- Department of Internal Medicine, Division of Cardiovascular Medicine
| | - Penelope A. Boyden
- the Department of Pharmacology, Columbia University, New York, New York 10032
| | - Cynthia A. Carnes
- From The Dorothy M. Davis Heart and Lung Research Institute
- The College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
| | - Mark E. Anderson
- the Department of Internal Medicine, Division of Cardiovascular Medicine and
- the Department of Molecular Physiology and Biophysics, University of Iowa Carver College of Medicine, Iowa City, Iowa 52242, and
| | - Thomas J. Hund
- From The Dorothy M. Davis Heart and Lung Research Institute
- Department of Internal Medicine, Division of Cardiovascular Medicine
- College of Engineering, Department of Biomedical Engineering, and
| | - Peter J. Mohler
- From The Dorothy M. Davis Heart and Lung Research Institute
- Department of Internal Medicine, Division of Cardiovascular Medicine
- Department of Physiology and Cell Biology
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Kohley Z, Snyder J, Baumann T, Christian G, DeYoung PA, Finck JE, Haring-Kaye RA, Jones M, Lunderberg E, Luther B, Mosby S, Simon A, Smith JK, Spyrou A, Stephenson SL, Thoennessen M. Unresolved question of the 10He ground state resonance. Phys Rev Lett 2012; 109:232501. [PMID: 23368186 DOI: 10.1103/physrevlett.109.232501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Indexed: 06/01/2023]
Abstract
The ground state of (10)He was populated using a 2p2n-removal reaction from a 59 MeV/u (14)Be beam. The decay energy of the three-body system, (8)He+n+n, was measured and a resonance was observed at E=1.60(25) MeV with a 1.8(4) MeV width. This result is in agreement with previous invariant mass spectroscopy measurements, using the (11)Li(-p) reaction, but is inconsistent with recent transfer reaction results. The proposed explanation that the difference, about 500 keV, is due to the effect of the extended halo nature of (11)Li in the one-proton knockout reaction is no longer valid as the present work demonstrates that the discrepancy between the transfer reaction results persists despite using a very different reaction mechanism, (14)Be(-2p2n).
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Affiliation(s)
- Z Kohley
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
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Zhang W, Zhao S, Rao W, Snyder J, Choi JK, Wang J, Khan IA, Saleh NB, Mohler PJ, Yu J, Hund TJ, Tang C, He X. A Novel Core-Shell Microcapsule for Encapsulation and 3D Culture of Embryonic Stem Cells. J Mater Chem B 2012; 2013:1002-1009. [PMID: 23505611 DOI: 10.1039/c2tb00058j] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this study, we report the preparation of a novel microcapsule of ~ 100 μm with a liquid (as compared to solid-like alginate hydrogel) core and an alginate-chitosan-alginate (ACA) shell for encapsulation and culture of embryonic stem (ES) cells in the miniaturized 3D space of the liquid core. Murine R1 ES cells cultured in the microcapsules were found to survive (> 90%) well and proliferate to form either a single aggregate of pluripotent cells or embryoid body (EB) of more differentiated cells in each microcapsule within 7 days, dependent on the culture medium used. This novel microcapsule technology allows massive production of the cell aggregates or EBs of uniform size and controllable pluripotency, which is important for the practical application of stem cell based therapy. Moreover, the semipermeable ACA shell was found to significantly reduce immunoglobulin G (IgG) binding to the encapsulated cells by up to 8.2 times, compared to non-encapsulated cardiac fibroblasts, mesenchymal stem cells, and ES cells. This reduction should minimize inflammatory and immune responses induced damage to the cells implanted in vivo becasue IgG binding is an important first step of the undesired host responses. Therefore, the ACA microcapsule with selective shell permeability should be of importance to advance the emerging cell-based medicine.
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Affiliation(s)
- Wujie Zhang
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA ; Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA ; Biomolecular Engineering Program, Department of Physics and Chemistry, Milwaukee School of Engineering, Milwaukee, WI 53202, USA
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Fayolle G, Levick W, Lajiness-O'Neill R, Fastenau P, Briskin S, Bass N, Silva M, Critchfield E, Nakase-Richardson R, Hertza J, Loughan A, Perna R, Northington S, Boyd S, Anderson A, Peery S, Chafetz M, Maris M, Ramezani A, Sylvester C, Goldberg K, Constantinou M, Karekla M, Hall J, Edwards M, Balldin V, Strutt A, Pavlik V, Marquez de la Plata C, Cullum M, lacritz L, Reisch J, Massman P, Royall D, Barber R, Younes S, Wiechmann A, O'Bryant S, Patel K, Suhr J, Patel K, Suhr J, Chari S, Yokoyama J, Bettcher B, Karydas A, Miller B, Kramer J, Zec R, Fritz S, Kohlrus S, Robbs R, Ala T, Gifford K, Cantwell N, Romano R, Jefferson A, Holland A, Newton S, Bunting J, Coe M, Carmona J, Harrison D, Puente A, Terry D, Faraco C, Brown C, Patel A, Watts A, Kent A, Siegel J, Miller S, Ernst W, Chelune G, Holdnack J, Sheehan J, Duff K, Pedraza O, Crawford J, Terry D, Puente A, Brown C, Faraco C, Watts A, Patel A, Kent A, Siegel J, Miller L, Younes S, Hobson Balldin V, Benavides H, Johnson L, Hall J, Tshuma L, O'Bryant S, Dezhkam N, Hayes L, Love C, Stephens B, Webbe F, Allen C, Lemann E, Davis A, Pierson E, Lutz J, Piehl J, Holler K, Kavanaugh B, Tayim F, Llanes S, Mulligan K, Poston K, Riccio C, Beathard J, Cohen M, Stolberg P, Hart J, Jones W, Mayfield J, Allen D, Weller J, Dunham K, Demireva P, McInerney K, Suhr J, Dykstra J, Riddle T, Suhr J, Primus M, Riccio C, Highsmith J, Everhart D, Shadi S, Lehockey K, Sullivan S, Lucas M, Mandava S, Murphy B, Donovick P, Lalwani L, Rosselli M, Coad S, Carrasco R, Sofko C, Scarisbrick D, Golden C, Coad S, Zuckerman S, Golden C, Perna R, Loughan A, Hertza J, Brand J, Rivera Mindt M, Denney R, Schaffer S, Alper K, Devinsky O, Barr W, Langer K, Fraiman J, Scagliola J, Roman E, Martinez A, Cohen M, Dunham K, Riccio C, Martin P, Robbins J, Golden C, Axelrod B, Etherton J, Konopacki K, Moses J, Juliano A, Whiteside D, Rolin S, Widmann G, Franzwa M, Sokal B, Mark V, Doyle K, Morgan E, Weber E, Bondi M, Delano-Wood L, Grant I, Sibson J, Woods S, Andrews P, McGregor S, Golden C, Etherton J, Allen C, Cormier R, Cumley N, Elek M, Green M, Ogbeide S, Kruger A, Pacheco L, Robinson G, Welch H, Etherton J, Allen C, Cormier R, Cumley N, Kruger A, Pacheco L, Glover M, Parriott D, Jones W, Loe S, Hughes L, Natta L, Moses J, Vincent A, Roebuck-Spencer T, Bryan C, Padua M, Denney R, Moses J, Quenicka W, McGoldirck K, Bennett T, Soper H, Collier S, Connolly M, Hanratty A, Di Pinto M, Magnuson S, Dunham K, Handel E, Davidson K, Livers E, Frantz S, Allen J, Jerard T, Moses J, Pierce S, Sakhai S, Newton S, Warchol A, Holland A, Bunting J, Coe M, Carmona J, Harrison D, Barney S, Thaler N, Sutton G, Strauss G, Allen D, Hunter B, Bennett T, Quenicka W, McGoldrick K, Soper H, Sordahl J, Torrence N, John S, Gavett B, O'Bryant S, Shadi S, Denney R, Nichols C, Riccio C, Cohen M, Dennison A, Wasserman T, Schleicher-Dilks S, Adler M, Golden C, Olivier T, Schleicher-Dilks S, Golden C, LeMonda B, McGinley J, Pritchett A, Chang L, Cloak C, Cunningham E, Lohaugen G, Skranes J, Ernst T, Parke E, Thaler N, Etcoff L, Allen D, Andrews P, McGregor S, Golden C, Northington S, Daniels R, Loughan A, Perna R, Hertza J, Hochsztein N, Miles-Mason E, Granader Y, Vasserman M, MacAllister W, Casto B, Peery S, Patrick K, Hurewitz F, Chute D, Booth A, Koch C, Roid G, Balkema N, Kiefel J, Bell L, Maerlender A, Belkin T, Katzenstein J, Semerjian C, Culotta V, Band E, Yosick R, Burns T, Arenivas A, Bearden D, Olson K, Jacobson K, Ubogy S, Sterling C, Taub E, Griffin A, Rickards T, Uswatte G, Davis D, Sweeney K, Llorente A, Boettcher A, Hill B, Ploetz D, Kline J, Rohling M, O'Jile J, Holler K, Petrauskas V, Long J, Casey J, Long J, Petrauskas V, Duda T, Hodsman S, Casey J, Stricker S, Martner S, Hansen R, Ferraro F, Tangen R, Hanratty A, Tanabe M, O'Callaghan E, Houskamp B, McDonald L, Pick L, Guardino D, Pick L, Pietz T, Kayser K, Gray R, Letteri A, Crisologo A, Witkin G, Sanders J, Mrazik M, Harley A, Phoong M, Melville T, La D, Gomez R, Berthelson L, Robbins J, Lane E, Golden C, Rahman P, Konopka L, Fasfous A, Zink D, Peralta-Ramirez N, Perez-Garcia M, Puente A, Su S, Lin G, Kiely T, Gomez R, Schatzberg A, Keller J, Dykstra J, Suhr J, Feigon M, Renteria L, Fong M, Piper L, Lee E, Vordenberg J, Contardo C, Magnuson S, Doninger N, Luton L, Balkema N, Drane D, Phelan A, Stricker W, Poreh A, Wolkenberg F, Spira J, Lin G, Su S, Kiely T, Gomez R, Schatzberg A, Keller J, DeRight J, Jorgensen R, Fitzpatrick L, Crowe S, Woods S, Doyle K, Weber E, Cameron M, Cattie J, Cushman C, Grant I, Blackstone K, Woods S, Weber E, Grant I, Moore D, Roberg B, Somogie M, Thelen J, Lovelace C, Bruce J, Gerstenecker A, Mast B, Litvan I, Hargrave D, Schroeder R, Buddin W, Baade L, Heinrichs R, Thelen J, Roberg B, Somogie M, Lovelace C, Bruce J, Boseck J, Berry K, Koehn E, Davis A, Meyer B, Gelder B, Sussman Z, Espe-Pfeifer P, Musso M, Barker A, Jones G, Gouvier W, Weber E, Woods S, Grant I, Johnson V, Zaytsev L, Freier-Randall M, Sutton G, Thaler N, Ringdahl E, Allen D, Olsen J, Byrd D, Rivera-Mindt M, Fellows R, Morgello S, Wheaton V, Jaehnert S, Ellis C, Olavarria H, Loftis J, Huckans M, Pimental P, Frawley J, Welch M, Jennette K, Rinehardt E, Schoenberg M, Strober L, Genova H, Wylie G, DeLuca J, Chiaravalloti N, Hertza J, Loughan A, Perna R, Northington S, Boyd S, Hertza J, Loughan A, Perna R, Northington S, Boyd S, Ibrahim E, Seiam A, Ibrahim E, Bohlega S, Rinehardt E, Lloyd H, Goldberg M, Marceaux J, Fallows R, McCoy K, Yehyawi N, Luther E, Hilsabeck R, Fulton R, Stevens P, Erickson S, Dodzik P, Williams R, Dsurney J, Najafizadeh L, McGovern J, Chowdhry F, Acevedo A, Bakhtiar A, Karamzadeh N, Amyot F, Gandjbakhche A, Haddad M, Taub E, Johnson M, Wade J, Harper L, Rickards T, Sterling C, Barghi A, Uswatte G, Mark V, Balkema N, Christopher G, Marcus D, Spady M, Bloom J, Wiechmann A, Hall J, Loughan A, Perna R, Hertza J, Northington S, Zimmer A, Webbe F, Miller M, Schuster D, Ebner H, Mortimer B, Webbe F, Palmer G, Happe M, Paxson J, Jurek B, Graca J, Meyers J, Lange R, Brickell T, French L, Lange R, Iverson G, Shewchuk J, Madler B, Heran M, Brubacher J, Brickell T, Lange R, Ivins B, French L, Baldassarre M, Paper T, Herrold A, Chin A, Zgaljardic D, Oden K, Lambert M, Dickson S, Miller R, Plenger P, Jacobson K, Olson K, Sutherland E, Glatts C, Schatz P, Walker K, Philip N, McClaughlin S, Mooney S, Seats E, Carnell V, Raintree J, Brown D, Hodges C, Amerson E, Kennedy C, Moore J, Schatz P, Ferris C, Roebuck-Spencer T, Vincent A, Bryan C, Catalano D, Warren A, Monden K, Driver S, Chau P, Seegmiller R, Baker M, Malach S, Mintz J, Villarreal R, Peterson A, Leininger S, Strong C, Donders J, Merritt V, Vargas G, Rabinowitz A, Arnett P, Whipple E, Schultheis M, Robinson K, Iacovone D, Biester R, Alfano D, Nicholls M, Vargas G, Rabinowitz A, Arnett P, Rabinowitz A, Vargas G, Arnett P, Klas P, Jeffay E, Zakzanis K, Vandermeer M, Jeffay E, Zakzanis K, Womble M, Rohling M, Hill B, Corley E, Considine C, Fichtenberg N, Harrison J, Pollock M, Mouanoutoua A, Brimager A, Lebby P, Sullivan K, Edmed S, Silva M, Nakase-Richardson R, Critchfield E, Kieffer K, McCarthy M, Wiegand L, Lindsey H, Hernandez M, Puente A, Noniyeva Y, Lapis Y, Padua M, Poole J, Brooks B, McKay C, Mrazik M, Meeuwisse W, Emery C, Brooks B, Mazur-Mosiewicz A, Sherman E, Brooks B, Mazur-Mosiewicz A, Kirkwood M, Sherman E, Gunner J, Miele A, Silk-Eglit G, Lynch J, McCaffrey R, Stewart J, Tsou J, Scarisbrick D, Chan R, Bure-Reyes A, Cortes L, Gindy S, Golden C, Hunter B, Biddle C, Shah D, Jaberg P, Moss R, Horner M, VanKirk K, Dismuke C, Turner T, Muzzy W, Dunnam M, Miele A, Warner G, Donnelly K, Donnelly J, Kittleson J, Bradshaw C, Alt M, Margolis S, Ostroy E, Rolin S, Higgins K, Denney R, Rolin S, Eng K, Biddle C, Akeson S, Wall J, Davis J, Hansel J, Hill B, Rohling M, Wang B, Womble M, Gervais R, Greiffenstein M, Denning J, Denning J, Schroeder R, Buddin W, Hargrave D, VonDran E, Campbell E, Brockman C, Heinrichs R, Baade L, Buddin W, Hargrave D, Schroeder R, Teichner G, Waid R, Buddin W, Schroeder R, Teichner G, Waid R, Buican B, Armistead-Jehle P, Bailie J, Dilay A, Cottingham M, Boyd C, Asmussen S, Neff J, Schalk S, Jensen L, DenBoer J, Hall S, DenBoer J, Schalk S, Jensen L, Hall S, Miele A, Lynch J, McCaffrey R, Holcomb E, Axelrod B, Demakis G, Rimland C, Ward J, Ross M, Bailey M, Stubblefield A, Smigielski J, Geske J, Karpyak V, Reese C, Larrabee G, Suhr J, Silk-Eglit G, Gunner J, Miele A, Lynch J, McCaffrey R, Allen L, Celinski M, Gilman J, Davis J, Wall J, LaDuke C, DeMatteo D, Heilbrun K, Swirsky-Sacchetti T, Lindsey H, Puente A, Dedman A, Withers K, Chafetz M, Deneen T, Denney R, Fisher J, Spray B, Savage R, Wiener H, Tyer J, Ningaonkar V, Devlin B, Go R, Sharma V, Tsou J, Golden C, Fontanetta R, Calderon C, Coad S, Golden C, Calderon C, Fontaneta R, Coad S, Golden C, Ringdahl E, Thaler N, Sutton G, Vertinski M, Allen D, Verbiest R, Thaler N, Snyder J, Kinney J, Allen D, Rach A, Young J, Crouse E, Schretlen D, Weaver J, Buchholz A, Gordon B, Macciocchi S, Seel R, Godsall R, Brotsky J, DiRocco A, Houghton-Faryna E, Bolinger E, Hollenbeck C, Hart J, Thaler N, Vertinski M, Ringdahl E, Allen D, Lee B, Strauss G, Adams J, Martins D, Catalano L, Waltz J, Gold J, Haas G, Brown L, Luther J, Goldstein G, Kiely T, Kelley E, Lin G, Su S, Raba C, Gomez R, Trettin L, Solvason H, Schatzberg A, Keller J, Vertinski M, Thaler N, Allen D, Gold J, Buchanan R, Strauss G, Baldock D, Ringdahl E, Sutton G, Thaler N, Allen D, Fallows R, Marceaux J, McCoy K, Yehyawi N, Luther E, Hilsabeck R, Etherton J, Phelps T, Richmond S, Tapscott B, Thomlinson S, Cordeiro L, Wilkening G, Parikh M, Graham L, Grosch M, Hynan L, Weiner M, Cullum C, Hobson Balldin V, Menon C, Younes S, Hall J, Strutt A, Pavlik V, Marquez de la Plata C, Cullum M, Lacritz L, Reisch J, Massman P, Royall D, Barber R, O'Bryant S, Castro-Couch M, Irani F, Houshyarnejad A, Norman M, Peery S, Fonseca F, Bure-Reyes A, Browne B, Alvarez J, Jiminez Y, Baez V, Cortes L, Golden C, Fonseca F, Bure-Reyes A, Coad S, Alvarez J, Browne B, Baez V, Golden C, Resendiz C, Scott B, Farias G, York M, Lozano V, Mahoney M, Strutt A, Hernandez Mejia M, Puente A, Bure-Reyes A, Fonseca F, Baez V, Alvarez J, Browne B, Coad S, Jiminez Y, Cortes L, Golden C, Bure-Reyes A, Pacheco E, Homs A, Acevedo A, Ownby R, Nici J, Hom J, Lutz J, Dean R, Finch H, Pierce S, Moses J, Mann S, Feinberg J, Choi A, Kaminetskaya M, Pierce C, Zacharewicz M, Axelrod B, Gavett B, Horwitz J, Edwards M, O'Bryant S, Ory J, Gouvier W, Carbuccia K, Ory J, Carbuccia K, Gouvier W, Morra L, Garcon S, Lucas M, Donovick P, Whearty K, Campbell K, Camlic S, Donovick P, Edwards M, Balldin V, Hall J, Strutt A, Pavlik V, Marquez de la Plata C, Cullum C, Lacritz L, Reisch J, Massman P, Barber R, Royall D, Younes S, O'Bryant S, Brinckman D, Schultheis M, Ehrhart L, Weisser V, Medaglia J, Merzagora A, Reckess G, Ho T, Testa S, Gordon B, Schretlen D, Woolery H, Farcello C, Klimas N, Thaler N, Allen D, Meyer J, Vargas G, Rabinowitz A, Barwick F, Arnett P, Womble M, Rohling M, Hill B, Corley E, Drayer K, Rohling M, Ploetz D, Womble M, Hill B, Baldock D, Ringdahl E, Sutton G, Thaler N, Allen D, Galusha J, Schmitt A, Livingston R, Stewart R, Quarles L, Pagitt M, Barke C, Baker A, Baker N, Cook N, Ahern D, Correia S, Resnik L, Barnabe K, Gnepp D, Benjamin M, Zlatar Z, Garcia A, Harnish S, Crosson B, Rickards T, Mark V, Taub E, Sterling C, Vaughan L, Uswatte G, Fedio A, Sexton J, Cummings S, Logemann A, Lassiter N, Fedio P, Gremillion A, Nemeth D, Whittington T, Hansen R, Reckow J, Ferraro F, Lewandowski C, Cole J, Lewandowski A, Spector J, Ford-Johnson L, Lengenfelder J, Genova H, Sumowski J, DeLuca J, Chiaravalloti N, Loughan A, Perna R, Hertza J, Morse C, McKeever J, Zhao L, Leist T, Schultheis M, Marcinak J, Piecora K, Al-Khalil K, Webbe F, Mulligan K, Robbins J, Berthelson L, Martin P, Golden C, Piecora K, Marcinak J, Al-Khalil K, Webbe F, Mulligan K, Stewart J, Acevedo A, Ownby R, Thompson L, Kowalczyk W, Golub S, Davis A, Lemann E, Piehl J, Rita N, Moss L, Davis A, Boseck J, Berry K, Koehn E, Meyer B, Gelder B, Davis A, Nogin R, Moss L, Drapeau C, Malm S, Davis A, Lemann E, Koehn E, Drapeau C, Malm S, Boseck J, Armstrong L, Glidewell R, Orr W, Mears G. Grand Rounds. Arch Clin Neuropsychol 2012. [DOI: 10.1093/arclin/acs070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kashef F, Li J, Wright P, Snyder J, Suliman F, Kilic A, Higgins RSD, Anderson ME, Binkley PF, Hund TJ, Mohler PJ. Ankyrin-B protein in heart failure: identification of a new component of metazoan cardioprotection. J Biol Chem 2012; 287:30268-81. [PMID: 22778271 DOI: 10.1074/jbc.m112.368415] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Ankyrins (ankyrin-R, -B, and -G) are adapter proteins linked with defects in metazoan physiology. Ankyrin-B (encoded by ANK2) loss-of-function mutations are directly associated with human cardiovascular phenotypes including sinus node disease, atrial fibrillation, ventricular tachycardia, and sudden cardiac death. Despite the link between ankyrin-B dysfunction and monogenic disease, there are no data linking ankyrin-B regulation with common forms of human heart failure. Here, we report that ankyrin-B levels are altered in both ischemic and non-ischemic human heart failure. Mechanistically, we demonstrate that cardiac ankyrin-B levels are tightly regulated downstream of reactive oxygen species, intracellular calcium, and the calcium-dependent protease calpain, all hallmarks of human myocardial injury and heart failure. Surprisingly, β(II)-spectrin, previously thought to mediate ankyrin-dependent modulation in the nervous system and heart, is not coordinately regulated with ankyrin-B or its downstream partners. Finally, our data implicate ankyrin-B expression as required for vertebrate myocardial protection as hearts deficient in ankyrin-B show increased cardiac damage and impaired function relative to wild-type mouse hearts following ischemia reperfusion. In summary, our findings provide the data of ankyrin-B regulation in human heart failure, provide insight into candidate pathways for ankyrin-B regulation in acquired human cardiovascular disease, and surprisingly, implicate ankyrin-B as a molecular component for cardioprotection following ischemia.
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Affiliation(s)
- Farshid Kashef
- Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH 43210, USA
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McCue I, Snyder J, Li X, Chen Q, Sieradzki K, Erlebacher J. Apparent inverse Gibbs-Thomson effect in dealloyed nanoporous nanoparticles. Phys Rev Lett 2012; 108:225503. [PMID: 23003619 DOI: 10.1103/physrevlett.108.225503] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Indexed: 05/07/2023]
Abstract
The Gibbs-Thomson effect (the reduction of local chemical potential due to nanoscale curvature) predicts that nanoparticles of radius r dissolve at lower electrochemical potentials than bulk materials, decreasing as 1/r. However, we show here that if the particle is an alloy--susceptible to selective dissolution (dealloying) and nanoporosity evolution--then complete selective electrochemical dissolution and porosity evolution require a higher electrochemical potential than the comparable bulk planar material, increasing empirically as 1/r. This is a kinetic effect, which we demonstrate via kinetic Monte Carlo simulation. Our model shows that in the initial stages of dissolution, the less noble particle component is easily stripped from the nanoparticle surface, but owing to an increased mobility of the more noble atoms, the surface of the particle quickly passivates. At a fixed electrochemical potential, porosity and complete dealloying can only evolve if fluctuations in the surface passivation layer are sufficiently long-lived to allow dissolution from percolating networks of the less-noble component that penetrate through the bulk of the particle.
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Affiliation(s)
- I McCue
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
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Lunderberg E, DeYoung PA, Kohley Z, Attanayake H, Baumann T, Bazin D, Christian G, Divaratne D, Grimes SM, Haagsma A, Finck JE, Frank N, Luther B, Mosby S, Nagi T, Peaslee GF, Schiller A, Snyder J, Spyrou A, Strongman MJ, Thoennessen M. Evidence for the ground-state resonance of 26O. Phys Rev Lett 2012; 108:142503. [PMID: 22540789 DOI: 10.1103/physrevlett.108.142503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Indexed: 05/31/2023]
Abstract
Evidence for the ground state of the neutron-unbound nucleus (26)O was observed for the first time in the single proton-knockout reaction from a 82 MeV/u (27)F beam. Neutrons were measured in coincidence with (24)O fragments. (26)O was determined to be unbound by 150(-150)(+50) keV from the observation of low-energy neutrons. This result agrees with recent shell-model calculations based on microscopic two- and three-nucleon forces.
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Affiliation(s)
- E Lunderberg
- Department of Physics, Hope College, Holland, Michigan 49423, USA
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Spyrou A, Kohley Z, Baumann T, Bazin D, Brown BA, Christian G, DeYoung PA, Finck JE, Frank N, Lunderberg E, Mosby S, Peters WA, Schiller A, Smith JK, Snyder J, Strongman MJ, Thoennessen M, Volya A. First observation of ground state dineutron decay: 16Be. Phys Rev Lett 2012; 108:102501. [PMID: 22463404 DOI: 10.1103/physrevlett.108.102501] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Indexed: 05/31/2023]
Abstract
We report on the first observation of dineutron emission in the decay of 16Be. A single-proton knockout reaction from a 53 MeV/u 17B beam was used to populate the ground state of 16Be. 16Be is bound with respect to the emission of one neutron and unbound to two-neutron emission. The dineutron character of the decay is evidenced by a small emission angle between the two neutrons. The two-neutron separation energy of 16Be was measured to be 1.35(10) MeV, in good agreement with shell model calculations, using standard interactions for this mass region.
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Affiliation(s)
- A Spyrou
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
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Christian G, Frank N, Ash S, Baumann T, Bazin D, Brown J, DeYoung PA, Finck JE, Gade A, Grinyer GF, Grovom A, Hinnefeld JD, Lunderberg EM, Luther B, Mosby M, Mosby S, Nagi T, Peaslee GF, Rogers WF, Smith JK, Snyder J, Spyrou A, Strongman MJ, Thoennessen M, Warren M, Weisshaar D, Wersal A. Exploring the low-Z shore of the island of inversion at n=19. Phys Rev Lett 2012; 108:032501. [PMID: 22400733 DOI: 10.1103/physrevlett.108.032501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Indexed: 05/31/2023]
Abstract
The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound (28)F, determined to be a resonance in the (27)F+n continuum at 220(50) keV. States in (28)F were populated by the reactions of a 62 MeV/u (29)Ne beam impinging on a 288 mg/cm(2) beryllium target. The measured (28)F ground state energy is in good agreement with USDA/USDB shell model predictions, indicating that pf shell intruder configurations play only a small role in the ground state structure of (28)F and establishing a low-Z boundary of the island of inversion for N=19 isotones.
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Affiliation(s)
- G Christian
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
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Snyder J, Crooks VA, Johnston R. Perceptions of the Ethics of Medical Tourism: Comparing Patient and Academic Perspectives. Public Health Ethics 2011. [DOI: 10.1093/phe/phr034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Papas AS, Vollmer WM, Gullion CM, Bader J, Laws R, Fellows J, Hollis JF, Maupomé G, Singh ML, Snyder J, Blanchard P. Efficacy of chlorhexidine varnish for the prevention of adult caries: a randomized trial. J Dent Res 2011; 91:150-5. [PMID: 22156917 DOI: 10.1177/0022034511424154] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The Prevention of Adult Caries Study, an NIDCR-funded multicenter, double-blind, randomized clinical trial, enrolled 983 adults (aged 18-80 yrs) at high risk for developing caries (20 or more intact teeth and 2 or more lesions at screening) to test the efficacy of a chlorhexidine diacetate 10% weight per volume (w/v) dental coating (CHX). We excluded participants for whom the study treatment was contraindicated or whose health might affect outcomes or ability to complete the study. Participants were randomly assigned to receive either the CHX coating (n = 490) or a placebo control (n = 493). Coatings were applied weekly for 4 weeks and a fifth time 6 months later. The primary outcome (total net D(1-2)FS increment) was the sum of weighted counts of changes in tooth surface status over 13 months. We observed no significant difference between the two treatment arms in either the intention-to-treat or per-protocol analyses. Analysis of 3 protocol-specified secondary outcomes produced similar findings. This trial failed to find that 10% (w/v) chlorhexidine diacetate coating was superior to placebo coating for the prevention of new caries (Clinicaltrials.gov registration number NCT00357877).
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Affiliation(s)
- A S Papas
- Tufts University School of Dental Medicine, Boston, MA 02111, USA
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Fallows R, McCoy K, Hertza J, Klosson E, Estes B, Stroescu I, Salinas C, Stringer A, Aronson S, MacAllister W, Spurgin A, Morriss M, Glasier P, Stavinoha P, Houshyarnejad A, Jacobus J, Norman M, Peery S, Mattingly M, Pennuto T, Anderson-Hanley C, Miele A, Dunnam M, Edwards M, O'Bryant S, Johnson L, Barber R, Inscore A, Kegel J, Kozlovsky A, Tarantino B, Goldberg A, Herrera-Pino J, Jubiz-Bassi N, Rashid K, Noniyeva Y, Vo K, Stephens V, Gomez R, Sanders C, Kovacs M, Walton B, Schmitter-Edgecombe M, Schmitter-Edgecombe M, Parsey C, Cook D, Woods S, Weinborn M, Velnoweth A, Rooney A, Bucks R, Adalio C, White S, Blair J, Barber B, Marcy S, Barber B, Marcy S, Boseck J, McCormick C, Davis A, Berry K, Koehn E, Tiberi N, Gelder B, Brooks B, Sherman E, Garcia M, Robillard R, Gunner J, Miele A, Lynch J, McCaffrey R, Hamilton J, Froming K, Nemeth D, Steger A, Lebby P, Harrison J, Mounoutoua A, Preiss J, Brimager A, Gates E, Chang J, Cisneros H, Long J, Petrauskas V, Casey J, Picard E, Long J, Petrauskas V, Casey J, Picard E, Miele A, Gunner J, Lynch J, McCaffrey R, Rodriguez M, Fonseca F, Golden C, Davis J, Wall J, DeRight J, Jorgensen R, Lewandowski L, Ortigue S, Etherton J, Axelrod B, Green C, Snead H, Semrud-Clikeman M, Kirk J, Connery A, Kirkwood M, Hanson ML, Fazio R, Denney R, Myers W, McGuire A, Tree H, Waldron-Perrine B, Goldenring Fine J, Spencer R, Pangilinan P, Bieliauskas L, Na S, Waldron-Perrine B, Tree H, Spencer R, Pangilinan P, Bieliauskas L, Peck C, Bledsoe J, Schroeder R, Boatwright B, Heinrichs R, Baade L, Rohling M, Hill B, Ploetz D, Womble M, Shenesey J, Schroeder R, Semrud-Clikeman M, Baade L, VonDran E, Webster B, Brockman C, Burgess A, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Goldenring Fine J, Brockman C, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Brockman C, Heinrichs R, Schroeder R, Baade L, Bledsoe J, VonDran E, Webster B, Brockman C, Heinrichs R, Schroeder R, Baade L, VonDran E, Webster B, Brockman C, Heinrichs R, Thaler N, Strauss G, White T, Gold J, Tree H, Waldron-Perrine B, Spencer R, McGuire A, Na S, Pangilinan P, Bieliauskas L, Allen D, Vincent A, Roebuck-Spencer T, Cooper D, Bowles A, Gilliland K, Watts A, Ahmed F, Miller L, Yon A, Gordon B, Bello D, Bennett T, Yon A, Gordon B, Bennett T, Wood N, Etcoff L, Thede L, Oraker J, Gibson F, Stanford L, Gray S, Vroman L, Semrud-Clikeman M, Taylor T, Seydel K, Bure-Reyes A, Stewart J, Tourgeman I, Demsky Y, Golden C, Burns W, Gray S, Burns K, Calderon C, Tourgeman I, Golden C, Neblina C, San Miguel Montes L, Allen D, Strutt A, Scott B, Strutt A, Scott B, Armstrong P, Booth C, Blackstone K, Moore D, Gouaux B, Ellis R, Atkinson J, Grant I, Brennan L, Schultheis M, Hurtig H, Weintraub D, Duda J, Moberg P, Chute D, Siderowf A, Brescian N, Gass C, Brewster R, King T, Morris R, Krawiecki N, Dinishak D, Richardson G, Estes B, Knight M, Hertza J, Fallows R, McCoy K, Garcia S, Strain G, Devlin M, Cohen R, Paul R, Crosby R, Mitchell J, Gunstad J, Hancock L, Bruce J, Roberg B, Lynch S, Hertza J, Klosson E, Varnadore E, Schiff W, Estes B, Hertza J, Varnadore E, Estes B, Kaufman R, Rinehardt E, Schoenberg M, Mattingly M, Rosado Y, Velamuri S, LeBlanc M, Pimental P, Lynch-Chee S, Broshek D, Lyons P, McKeever J, Morse C, Ang J, Leist T, Tracy J, Schultheis M, Morgan E, Woods S, Rooney A, Perry W, Grant I, Letendre S, Morse C, McKeever J, Schultheis M, Musso M, Jones G, Hill B, Proto D, Barker A, Gouvier W, Nersesova K, Drexler M, Cherkasova E, Sakamoto M, Marcotte T, Hilsabeck R, Perry W, Carlson M, Barakat F, Hassanein T, Shevchik K, McCaw W, Schrock B, Smith M, Moser D, Mills J, Epping E, Paulsen J, Somogie M, Bruce J, Bryan F, Buscher L, Tyrer J, Stabler A, Thelen J, Lovelace C, Spurgin A, Graves D, Greenberg B, Harder L, Szczebak M, Glisky M, Thelen J, Lynch S, Hancock L, Bruce J, Ukueberuwa D, Arnett P, Vahter L, Ennok M, Pall K, Gross-Paju K, Vargas G, Medaglia J, Chiaravalloti N, Zakrzewski C, Hillary F, Andrews A, Golden C, Belloni K, Nicewander J, Miller D, Johnson S, David Z, Weideman E, Lawson D, Currier E, Morton J, Robinson J, Musso M, Hill B, Barker A, Pella R, Jones G, Proto D, Gouvier W, Vertinski M, Allen D, Thaler N, Heisler D, Park B, Barney S, Kucukboyaci N, Girard H, Kemmotsu N, Cheng C, Kuperman J, McDonald C, Carroll C, Odland A, Miller L, Mittenberg W, Coalson D, Wahlstrom D, Raiford S, Holdnack J, Ennok M, Vahter L, Gardner E, Dasher N, Fowler B, Vik P, Grajewski M, Lamar M, Penney D, Davis R, Korthauer L, Libon D, Kumar A, Holdnack J, Iverson G, Chelune G, Hunter C, Zimmerman E, Klein R, Prathiba N, Hopewell A, Cooper D, Kennedy J, Long M, Moses J, Lutz J, Tiberi N, Dean R, Miller J, Axelrod B, Van Dyke S, Rapport L, Schutte C, Hanks R, Pella R, Fallows R, McCoy K, O'Rourke J, Hilsabeck R, Petrauskas V, Bowden S, Romero R, Hulkonen R, Boivin M, Bangirana P, John C, Shapiro E, Slonaker A, Pass L, Smigielski J, Biernacka J, Geske J, Hall-Flavin D, Loukianova L, Schneekloth T, Abulseoud O, Mrazek D, Karpyak V, Terranova J, Safko E, Heisler D, Thaler N, Allen D, Van Dyke S, Axelrod B, Zink D, Puente A, Ames H, LePage J, Carroll C, Knee K, Mittenberg W, Cummings T, Webbe F, Shepherd E, Marcinak J, Diaz-Santos M, Seichepine D, Sullivan K, Neargarder S, Cronin-Golomb A, Franchow E, Suchy Y, Kraybill M, Holland A, Newton S, Hinson D, Smith A, Coe M, Carmona J, Harrison D, Hyer L, Atkinson M, Dalibwala J, Yeager C, Hyer L, Scott C, Atkinson M, Yeager C, Jacobson K, Olson K, Pella R, Fallows R, McCoy K, O'Rourke J, Hilsabeck R, Rosado Y, Kaufman R, Velamuri S, Rinehardt E, Mattingly M, Sartori A, Clay O, Ovalle F, Rothman R, Crowe M, Schmid A, Horne L, Horn G, Johnson-Markve B, Gorman P, Stewart J, Bure-Reyes A, Golden C, Tam J, McAlister C, Schmitter-Edgecombe M, Wagner M, Brenner L, Walker A, Armstrong L, Inman E, Grimmett J, Gray S, Cornelius A, Hertza J, Klosson E, Varnadore E, Schiff W, Estes B, Johnson L, Willingham M, Restrepo L, Bolanos J, Patel F, Golden C, Rice J, Dougherty M, Golden C, Sharma V, Martin P, Golden C, Bradley E, Dinishak D, Lockwood C, Poole J, Brickell T, Lange R, French L, Chao L, Klein S, Dunnam M, Miele A, Warner G, Donnelly K, Donnelly J, Kittleson J, Bradshaw C, Alt M, England D, Denney R, Meyers J, Evans J, Lynch-Chee S, Kennedy C, Moore J, Fedor A, Spitznagel M, Gunstad J, Ferland M, Guerrero NK, Davidson P, Collins B, Marshall S, Herrera-Pino J, Samper G, Ibarra S, Parrott D, Steffen F, Backhaus S, Karver C, Wade S, Taylor H, Brown T, Kirkwood M, Stancin T, Krishnan K, Culver C, Arenivas A, Bosworth C, Shokri-Kojori E, Diaz-Arrastia R, Marquez de la PC, Lange R, Ivins B, Marshall K, Schwab K, Parkinson G, Iverson G, Bhagwat A, French L, Lichtenstein J, Adams-Deutsch Z, Fleischer J, Goldberg K, Lichtenstein J, Adams-Deutsch Z, Fleischer J, Goldberg K, Lichtenstein J, Fleischer J, Goldberg K, Lockwood C, Ehrler M, Hull A, Bradley E, Sullivan C, Poole J, Lockwood C, Sullivan C, Hull A, Bradley E, Ehrler M, Poole J, Marcinak J, Schuster D, Al-Khalil K, Webbe F, Myers A, Ireland S, Simco E, Carroll C, Mittenberg W, Palmer E, Poole J, Bradley E, Dinishak D, Piecora K, Marcinak J, Al-Khalil K, Mroczek N, Schuster D, Snyder A, Rabinowitz A, Arnett P, Schatz P, Cameron N, Stolberg P, Hart J, Jones W, Mayfield J, Allen D, Sullivan K, Edmed S, Vanderploeg R, Silva M, Vaughan C, McGuire E, Gerst E, Fricke S, VanMeter J, Newman J, Gioia G, Vaughan C, VanMeter J, McGuire E, Gioia G, Newman J, Gerst E, Fricke S, Wahlberg A, Zelonis S, Chatterjee A, Smith S, Whipple E, Mace L, Manning K, Ang J, Schultheis M, Wilk J, Herrell R, Hoge C, Zakzanis K, Yu S, Jeffay E, Zimmer A, Webbe F, Piecora K, Schuster D, Zimmer A, Piecora K, Schuster D, Webbe F, Adler M, Holster J, Golden C, Andrews A, Schleicher-Dilks S, Golden C, Arffa S, Thornton J, Arffa S, Thornton J, Arffa S, Thornton J, Arffa S, Thornton J, Canas A, Sevadjian C, Fournier A, Miller D, Maricle D, Donders J, Larsen T, Gidley Larson J, Sheehan J, Suchy Y, Higgins K, Rolin S, Dunham K, Akeson S, Horton A, Reynolds C, Horton A, Reynolds C, Jordan L, Gonzalez S, Heaton S, McAlister C, Tam J, Schmitter-Edgecombe M, Olivier T, West S, Golden C, Prinzi L, Martin P, Robbins J, Bruzinski B, Golden C, Riccio C, Blakely A, Yoon M, Reynolds C, Robbins J, Prinzi L, Martin P, Golden C, Schleicher-Dilks S, Andrews A, Adler M, Pearlson J, Golden C, Sevadjian C, Canas A, Fournier A, Miller D, Maricle D, Sheehan J, Gidley LJ, Suchy Y, Sherman E, Carlson H, Gaxiola-Valdez I, Wei X, Beaulieu C, Hader W, Brooks B, Kirton A, Barlow K, Hrabok M, Mohamed I, Wiebe S, Smith K, Ailion A, Ivanisevic M, King T, Smith K, King T, Thorgusen S, Bowman D, Suchy Y, Walsh K, Mitchell F, Jill G, Iris P, Ross K, Madan-Swain A, Gioia G, Isquith P, Webber D, DeFilippis N, Collins M, Hill F, Weber R, Johnson A, Wiley C, Zimmerman E, Burns T, DeFilippis N, Ritchie D, Odland A, Stevens A, Mittenberg W, Hartlage L, Williams B, Weidemann E, Demakis G, Avila J, Razani J, Burkhart S, Adams W, Edwards M, O'Bryant S, Hall J, Johnson L, Grammas P, Gong G, Hargrave K, Mattevada S, Barber R, Hall J, Vo H, Johnson L, Barber R, O'Bryant S, Hill B, Davis J, O'Connor K, Musso M, Rehm-Hamilton T, Ploetz D, Rohling M, Rodriguez M, Potter E, Loewenstein D, Duara R, Golden C, Velamuri S, Rinehardt E, Schoenberg M, Mattingly M, Kaufman R, Rosado Y, Boseck J, Tiberi N, McCormick C, Davis A, Hernandez Finch M, Gelder B, Cannon M, McGregor S, Reitman D, Rey J, Scarisbrick D, Holdnack J, Iverson G, Thaler N, Bello D, Whoolery H, Etcoff L, Vekaria P, Whittington L, Nemeth D, Gremillion A, Olivier T, Amirthavasagam S, Jeffay E, Zakzanis K, Barney S, Umuhoza D, Strauss G, Knatz-Bello D, Allen D, Bolanos J, Bell J, Restrepo L, Frisch D, Golden C, Hartlage L, Williams B, Iverson G, McIntosh D, Kjernisted K, Young A, Kiely T, Tai C, Gomez R, Schatzberg A, Keller J, Rhodes E, Ajilore O, Zhang A, Kumar A, Lamar M, Ringdahl E, Sutton G, Turner A, Snyder J, Allen D, Verbiest R, Thaler N, Strauss G, Allen D, Walkenhorst E, Crowe S, August-Fedio A, Sexton J, Cummings S, Brown K, Fedio P, Grigorovich A, Fish J, Gomez M, Leach L, Lloyd H, Nichols M, Goldberg M, Novakovic-Agopian T, Chen A, Abrams G, Rossi A, Binder D, Muir J, Carlin G, Murphy M, McKim R, Fitsimmons R, D'Esposito M, Shevchik K, McCaw W, Schrock B, Vernon A, Frank R, Ona PZ, Freitag E, Weber E, Woods S, Kellogg E, Grant I, Basso M, Dyer B, Daniel M, Michael P, Fontanetta R, Martin P, Golden C, Gass C, Stripling A, Odland A, Holster J, Corsun-Ascher C, Olivier T, Golden C, Legaretta M, Vik P, Van Ness E, Fowler B, Noll K, Denney D, Wiechman A, Stephanie T, Greenberg B, Lacritz L, Padua M, Sandhu K, Moses J, Sordahl J, Anderson J, Wheaton V, Anderson J, Berggren K, Cheung D, Luber H, Loftis J, Huckans M, Bennett T, Dawson C, Soper H, Bennett T, Soper H, Carter K, Hester A, Ringe W, Spence J, Posamentier M, Hart J, Haley R, Fallows R, Pella R, McCoy K, O'Rourke J, Hilsabeck R, Fallows R, Pella R, McCoy K, O'Rourke J, Hilsabeck R, Gass C, Curiel R, Gass C, Stripling A, Odland A, Goldberg M, Lloyd H, Gremillion A, Nemeth D, Whittington L, Hu E, Vik P, Dasher N, Fowler B, Jeffay E, Zakzanis K, Jordan S, DeFilippis N, Collins M, Goetsch V, Small S, Mansoor Y, Homer-Smith E, Lockwood C, Moses J, Martin P, Odland A, Fontanetta R, Sharma V, Golden C, Odland A, Martin P, Perle J, Gass C, Simco E, Mittenberg W, Patt V, Minassian A, Perry W, Polott S, Webbe F, Mulligan K, Shaneyfelt K, Wall J, Thompson J, Tai C, Kiely T, Compono V, Trettin L, Gomez R, Schatzberg A, Keller J, Tsou J, Pearlson J, Sharma V, Tourgeman I, Golden C, Waldron-Perrine B, Tree H, Spencer R, McGuire A, Na S, Pangilinan P, Bieliauskas L, You S, Moses J, An K, Jeffay E, Zakzanis K, Biddle C, Fazio R, Willett K, Rolin S, O'Grady M, Denney R, Bresnan K, Erlanger D, Seegmiller R, Kaushik T, Brooks B, Krol A, Carlson H, Sherman E, Davis J, McHugh T, Axelrod B, Hanks R. Grand Rounds. Arch Clin Neuropsychol 2011. [DOI: 10.1093/arclin/acr056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hamid Q, Snyder J, Wang C, Timmer M, Hammer J, Guceri S, Sun W. Fabrication of three-dimensional scaffolds using precision extrusion deposition with an assisted cooling device. Biofabrication 2011; 3:034109. [PMID: 21727312 DOI: 10.1088/1758-5082/3/3/034109] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In the field of biofabrication, tissue engineering and regenerative medicine, there are many methodologies to fabricate a building block (scaffold) which is unique to the target tissue or organ that facilitates cell growth, attachment, proliferation and/or differentiation. Currently, there are many techniques that fabricate three-dimensional scaffolds; however, there are advantages, limitations and specific tissue focuses of each fabrication technique. The focus of this initiative is to utilize an existing technique and expand the library of biomaterials which can be utilized to fabricate three-dimensional scaffolds rather than focusing on a new fabrication technique. An expanded library of biomaterials will enable the precision extrusion deposition (PED) device to construct three-dimensional scaffolds with enhanced biological, chemical and mechanical cues that will benefit tissue generation. Computer-aided motion and extrusion drive the PED to precisely fabricate micro-scaled scaffolds with biologically inspired, porosity, interconnectivity and internal and external architectures. The high printing resolution, precision and controllability of the PED allow for closer mimicry of tissues and organs. The PED expands its library of biopolymers by introducing an assisting cooling (AC) device which increases the working extrusion temperature from 120 to 250 °C. This paper investigates the PED with the integrated AC's capabilities to fabricate three-dimensional scaffolds that support cell growth, attachment and proliferation. Studies carried out in this paper utilized a biopolymer whose melting point is established to be 200 °C. This polymer was selected to illustrate the newly developed device's ability to fabricate three-dimensional scaffolds from a new library of biopolymers. Three-dimensional scaffolds fabricated with the integrated AC device should illustrate structural integrity and ability to support cell attachment and proliferation.
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Affiliation(s)
- Q Hamid
- Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA, USA
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Gordan VV, Riley JL, Carvalho RM, Snyder J, Sanderson JL, Anderson M, Gilbert GH. Methods used by Dental Practice-based Research Network (DPBRN) dentists to diagnose dental caries. Oper Dent 2011; 36:2-11. [PMID: 21488724 DOI: 10.2341/10-137-cr] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To (1) identify the methods that dentists in The Dental Practice-Based Research Network (DPBRN) use to diagnose dental caries; (2) quantify their frequency of use and (3) test the hypothesis that certain dentist and dental practice characteristics are significantly associated with their use. METHODS A questionnaire about methods used for caries diagnosis was sent to DPBRN dentists who reported doing some restorative dentistry; 522 dentists participated. Questions included the use of dental radiographs, the dental explorer, laser fluorescence, air-drying and fiber-optic devices and magnification as used when diagnosing primary, secondary/recurrent or non-specific caries lesions. Variations on the frequency of their use were tested using multivariate analysis and Bonferroni tests. RESULTS Overall, the dental explorer was the instrument most commonly used to detect primary occlusal caries and caries at the margins of existing restorations. In contrast, laser fluorescence was rarely used to help diagnose occlusal primary caries. For proximal caries, radiographs were used to help diagnose 75%–100% of lesions by 96% of the DPBRN dentists. Dentists who use radiographs most often to assess proximal surfaces of posterior teeth were significantly more likely to also report providing a higher percentage of patients with individualized caries prevention (p=.040) and seeing a higher percentage of pediatric patients (p=.001). CONCLUSION The use of specific diagnostic methods varied substantially. The dental explorer and radiographs are still the most commonly used diagnostic methods..
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Affiliation(s)
- V V Gordan
- University of Florida, Gainesville, FL, USA.
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Snyder J, Fujita T, Chen MW, Erlebacher J. Oxygen reduction in nanoporous metal-ionic liquid composite electrocatalysts. Nat Mater 2010; 9:904-907. [PMID: 20953182 DOI: 10.1038/nmat2878] [Citation(s) in RCA: 338] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Accepted: 09/03/2010] [Indexed: 05/30/2023]
Abstract
The improvement of catalysts for the four-electron oxygen-reduction reaction (ORR; O(2) + 4H(+) + 4e(-) → 2H(2)O) remains a critical challenge for fuel cells and other electrochemical-energy technologies. Recent attention in this area has centred on the development of metal alloys with nanostructured compositional gradients (for example, core-shell structure) that exhibit higher activity than supported Pt nanoparticles (Pt-C; refs 1-7). For instance, with a Pt outer surface and Ni-rich second atomic layer, Pt(3)Ni(111) is one of the most active surfaces for the ORR (ref. 8), owing to a shift in the d-band centre of the surface Pt atoms that results in a weakened interaction between Pt and intermediate oxide species, freeing more active sites for O(2) adsorption. However, enhancements due solely to alloy structure and composition may not be sufficient to reduce the mass activity enough to satisfy the requirements for fuel-cell commercialization, especially as the high activity of particular crystal surface facets may not easily translate to polyfaceted particles. Here we show that a tailored geometric and chemical materials architecture can further improve ORR catalysis by demonstrating that a composite nanoporous Ni-Pt alloy impregnated with a hydrophobic, high-oxygen-solubility and protic ionic liquid has extremely high mass activity. The results are consistent with an engineered chemical bias within a catalytically active nanoporous framework that pushes the ORR towards completion.
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Meltzer SJ, Snyder J, Penrod JR, Nudi M, Morin L. Gestational diabetes mellitus screening and diagnosis: a prospective randomised controlled trial comparing costs of one-step and two-step methods. BJOG 2010; 117:407-15. [DOI: 10.1111/j.1471-0528.2009.02475.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Carvey PM, Zhao CH, Hendey B, Lum H, Trachtenberg J, Desai BS, Snyder J, Zhu YG, Ling ZD. 6-Hydroxydopamine-induced alterations in blood-brain barrier permeability. Eur J Neurosci 2006; 22:1158-68. [PMID: 16176358 DOI: 10.1111/j.1460-9568.2005.04281.x] [Citation(s) in RCA: 161] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Vascular inflammation is well known for its ability to compromise the function of the blood--brain barrier (BBB). Whether inflammation on the parenchymal side of the barrier, such as that associated with Parkinson's-like dopamine (DA) neuron lesions, similarly disrupts BBB function, is unknown. We assessed BBB integrity by examining the leakage of FITC-labeled albumin or horseradish peroxidase from the vasculature into parenchyma in animals exposed to the DA neurotoxin 6-hydroxydopamine (6OHDA). Unilateral injections of 6OHDA into the striatum or the medial forebrain bundle produced increased leakage in the ipsilateral substantia nigra and striatum 10 and 34 days following 6OHDA. Microglia were markedly activated and DA neurons were reduced by the lesions. The areas of BBB leakage were associated with increased expression of P-glycoprotein and beta 3-integrin expression suggesting, respectively, a compensatory response to inflammation and possible angiogenesis. Behavioural studies revealed that domperidone, a DA antagonist that normally does not cross the BBB, attenuated apomorphine-induced stereotypic behaviour in animals with 6OHDA lesions. This suggests that drugs which normally have no effect in brain can enter following Parkinson-like lesions. These data suggest that the events associated with DA neuron loss compromise BBB function.
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Affiliation(s)
- P M Carvey
- Rush University Medical Center, Department of Pharmacology, Cohn 406, Chicago, IL 60612, USA.
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Sieving R, Hellerstedt W, McNeely C, Fee R, Snyder J, Resnick M. Reliability of self-reported contraceptive use and sexual behaviors among adolescent girls. J Sex Res 2005; 42:159-66. [PMID: 16123846 DOI: 10.1080/00224490509552269] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
This study examines two issues relevant to adolescents' self-reported sexual and contraceptive use behaviors: reliability of partner-referent reports versus 3 and 6 month reports, and test-retest reliability of reports completed over a 2 week period. Data are from 196 13 to 18 year old girls recruited into this study while they south reproductive care from health clinics in a metropolitan area. All participants reported having had sexual intercourse during the past 6 months. Twice over a 2 week interval, participants completed the same paper and pencil surveys. The survey presented questions about sexual behavior and contraceptive use using 3 sequential frames of reference: within the past 6 months, within the past 3 months, and by specific sexual partners in the past 6 months. Findings demonstrate that adolescent girls can reliably report sexual behavior and contraceptive use over a 6 month interval. Study findings have implications for future research utilizing adolescents' self-reported sexual and contraceptive use behaviors.
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Affiliation(s)
- R Sieving
- University of Minnesota School of Nursing, 5-160 Weaver-Densford Hall, 308 Harvard Street S.E., Minneapolis, MN, 55455, USA.
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Snyder J, Ueland BG, Slusky JS, Karunadasa H, Cava RJ, Mizel A, Schiffer P. Quantum-classical reentrant relaxation crossover in Dy2Ti2O7 spin ice. Phys Rev Lett 2003; 91:107201. [PMID: 14525500 DOI: 10.1103/physrevlett.91.107201] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2003] [Indexed: 05/24/2023]
Abstract
We have studied spin relaxation in the spin ice compound Dy2Ti2O7 through measurements of the ac magnetic susceptibility. While the characteristic spin-relaxation time (tau) is thermally activated at high temperatures, it becomes almost temperature independent below T(cross) approximately 13 K. This behavior, combined with nonmonotonic magnetic field dependence of tau, indicates that quantum tunneling dominates the relaxational process below that temperature. As the low-entropy spin ice state develops below T(ice) approximately 4 K, tau increases sharply with decreasing temperature, suggesting the emergence of a collective degree of freedom for which thermal relaxation processes again become important as the spins become strongly correlated.
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Affiliation(s)
- J Snyder
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Farrell J, Hoffman H, Snyder J, Giulian C. The effects of the functional tone management (FTM) arm training program on upper extremity motor control on chronic post-stroke individuals. J Stroke Cerebrovasc Dis 2003. [DOI: 10.1016/j.jstrokecerebrovasdis.2003.11.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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