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Kaufmann C, Barone J, Cross M, Dekhne N, Devisetty K, Dilworth J, Edmonson D, Eladoumikdachi F, Gass J, Hong R, Kuske R, Lebovic G, Patton B, Phillips R, Tafra L, Smith A, Smith L. Use of a 3-D bioabsorbable marker for planning and targeting radiation to the lumpectomy cavity: 3 year results from a registry study. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30454-4] [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: 10/17/2022]
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Rojas KE, Matthews N, Raker C, Clark MA, Onstad M, Stuckey A, Gass J. Body mass index (BMI), postoperative appearance satisfaction, and sexual function in breast cancer survivorship. J Cancer Surviv 2017; 12:127-133. [DOI: 10.1007/s11764-017-0651-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 09/27/2017] [Indexed: 01/27/2023]
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3
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Affiliation(s)
- H.K. Atwal
- Department of Pharmacy, Mayo Clinic, Jacksonville, FL, United States
- Corresponding author.
| | - J. Gass
- Department of Clinical Genomics, Center for Individualized Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - P.R. Blackburn
- Department of Clinical Genomics, Center for Individualized Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - P.S. Atwal
- Department of Clinical Genomics, Center for Individualized Medicine, Mayo Clinic, Jacksonville, FL, United States
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Gass J, Atwal HK, Atwal PS. Late-onset mitochondrial encephalomyopathy with lactic acid and stroke-like episodes (MELAS), defining symptomology. Mol Genet Metab Rep 2017; 10:51. [PMID: 28116243 PMCID: PMC5233920 DOI: 10.1016/j.ymgmr.2017.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 01/04/2017] [Indexed: 10/29/2022] Open
Affiliation(s)
- J Gass
- Department of Clinical Genomics, Center for Individualized Medicine, Mayo Clinic, Jacksonville, FL, United States
| | - H K Atwal
- Department of Pharmacy, Mayo Clinic, Jacksonville, FL, United States
| | - P S Atwal
- Department of Clinical Genomics, Center for Individualized Medicine, Mayo Clinic, Jacksonville, FL, United States
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Rojas K, Raker C, Onstad M, Kunkel E, Clark M, Stuckey A, Gass J. 031 The Impact of Mastectomy Type on the Female Sexual Function Index (FSFI) and Parameters of Intimacy such as Appearance, Satisfaction, and the Breast’s Role in Intimacy. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.04.030] [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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Sieg A, Gass J, Weeks P, Brown A, Rajapreyar I, Gregoric I. Anticoagulation Monitoring in Left Ventricular Assist Device (LVAD) Patients. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1212] [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: 10/22/2022] Open
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Fogarty S, Onstad M, Stuckey A, Kunkel E, Clark M, Lopes V, Raker C, Robison K, Flores L, Boggis J, Manning L, Blake R, Sargent R, Gass J. Surgical management of breast cancer and impact on sexual function. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2014.11.068] [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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Lokich E, Stuckey A, Raker C, Scalia Wilbur J, Laprise J, Gass J. Preoperative genetic testing affects surgical decision-making in breast cancer patients. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.03.134] [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: 10/25/2022]
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Lee SE, Bairstow SF, Werling JO, Chaubal MV, Lin L, Murphy MA, DiOrio JP, Gass J, Rabinow B, Wang X, Zhang Y, Yang Z, Hoffman RM. Paclitaxel nanosuspensions for targeted chemotherapy – nanosuspension preparation, characterization, and use. Pharm Dev Technol 2013; 19:438-53. [DOI: 10.3109/10837450.2013.789911] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hill E, Raker C, Carson S, Wiggins D, Granai C, Gass J, Spriggs E, Dizon D. A prospective evaluation of quality of life, sexual function, and depression in women referred to a sexuality clinic for female cancer survivors. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.279] [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: 10/28/2022]
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McKee J, Brooks B, Daller J, Gass J, Pantaleone D, Zieske P. Evaluation of the potential adverse effects associated with calcium carbonate precipitate during continuous venovenous hemofiltration. Crit Care 2012. [PMCID: PMC3363783 DOI: 10.1186/cc10972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Dizon DS, Gass J, Legare RD, Sakr BJ, Rizack T. Is tumor board relevant? J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19654] [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: 11/20/2022] Open
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Srinath S, Poddar P, Sidhaye DS, Prasad BLV, Gass J, Srikanth H. Static and dynamic magnetic properties of Co nanoparticles. J Nanosci Nanotechnol 2008; 8:4086-4091. [PMID: 19049180 DOI: 10.1166/jnn.2008.an06] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Co nanoparticles have been synthesized using wet-chemical methods. As-synthesized particles show a sharp low temperature peak in zero-field cooled (ZFC) magnetization well below the blocking transition temperature and this feature is associated with surface spin disorder. We have investigated the dynamic magnetic properties of Co using ac susceptibility and resonant RF transverse susceptibility (TS). We also studied the memory and relaxation effects in these nanoparticle systems. From these measurements we show a typical blocking behavior of an assembly of superparamagnetic nanoparticles with a wide distribution of blocking temperatures. The transverse susceptibility measurements on these particles show the presence of anisotropy even above the blocking temperature. The role of surface anisotropy and the size distribution of the particles on the observed memory and magnetic relaxation effects are discussed.
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Affiliation(s)
- S Srinath
- Department of Physics, University of South Florida, Tampa, FL-33620, USA
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McKee J, Palmer L, Rice D, Anderson L, Gass J, Motlagh D, Pokropinski S, Rausa F, McCallister B, Jasani B, Kemshead J, Amrani D. Therapeutic Potential of Intramyocardial Transplanted CD34+ Cells in Myocardial Ischemia. FASEB J 2008. [DOI: 10.1096/fasebj.22.1_supplement.1123.23] [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: 11/11/2022]
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Wider C, Melquist S, Hauf M, Solida A, Cobb SA, Kachergus JM, Gass J, Coon KD, Baker M, Cannon A, Stephan DA, Schorderet DF, Ghika J, Burkhard PR, Kapatos G, Hutton M, Farrer MJ, Wszolek ZK, Vingerhoets FJG. Study of a Swiss dopa-responsive dystonia family with a deletion in GCH1: redefining DYT14 as DYT5. Neurology 2007; 70:1377-83. [PMID: 17804835 PMCID: PMC2330252 DOI: 10.1212/01.wnl.0000275527.35752.c5] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [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: 01/08/2023] Open
Abstract
OBJECTIVE To report the study of a multigenerational Swiss family with dopa-responsive dystonia (DRD). METHODS Clinical investigation was made of available family members, including historical and chart reviews. Subject examinations were video recorded. Genetic analysis included a genome-wide linkage study with microsatellite markers (STR), GTP cyclohydrolase I (GCH1) gene sequencing, and dosage analysis. RESULTS We evaluated 32 individuals, of whom 6 were clinically diagnosed with DRD, with childhood-onset progressive foot dystonia, later generalizing, followed by parkinsonism in the two older patients. The response to levodopa was very good. Two additional patients had late onset dopa-responsive parkinsonism. Three other subjects had DRD symptoms on historical grounds. We found suggestive linkage to the previously reported DYT14 locus, which excluded GCH1. However, further study with more stringent criteria for disease status attribution showed linkage to a larger region, which included GCH1. No mutation was found in GCH1 by gene sequencing but dosage methods identified a novel heterozygous deletion of exons 3 to 6 of GCH1. The mutation was found in seven subjects. One of the patients with dystonia represented a phenocopy. CONCLUSIONS This study rules out the previously reported DYT14 locus as a cause of disease, as a novel multiexonic deletion was identified in GCH1. This work highlights the necessity of an accurate clinical diagnosis in linkage studies as well as the need for appropriate allele frequencies, penetrance, and phenocopy estimates. Comprehensive sequencing and dosage analysis of known genes is recommended prior to genome-wide linkage analysis.
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Affiliation(s)
- C Wider
- Department of Neurology, Cannaday Building 2E, Mayo Clinic, San Pablo Road 4500, Jacksonville, FL 32246, USA.
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Schymick JC, Yang Y, Andersen PM, Vonsattel JP, Greenway M, Momeni P, Elder J, Chiò A, Restagno G, Robberecht W, Dahlberg C, Mukherjee O, Goate A, Graff-Radford N, Caselli RJ, Hutton M, Gass J, Cannon A, Rademakers R, Singleton AB, Hardiman O, Rothstein J, Hardy J, Traynor BJ. Progranulin mutations and amyotrophic lateral sclerosis or amyotrophic lateral sclerosis-frontotemporal dementia phenotypes. J Neurol Neurosurg Psychiatry 2007; 78:754-6. [PMID: 17371905 PMCID: PMC2117704 DOI: 10.1136/jnnp.2006.109553] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Mutations in the progranulin (PGRN) gene were recently described as the cause of ubiquitin positive frontotemporal dementia (FTD). Clinical and pathological overlap between amyotrophic lateral sclerosis (ALS) and FTD prompted us to screen PGRN in patients with ALS and ALS-FTD. METHODS The PGRN gene was sequenced in 272 cases of sporadic ALS, 40 cases of familial ALS and in 49 patients with ALS-FTD. RESULTS Missense changes were identified in an ALS-FTD patient (p.S120Y) and in a single case of limb onset sporadic ALS (p.T182M), although the pathogenicity of these variants remains unclear. CONCLUSION PGRN mutations are not a common cause of ALS phenotypes.
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Affiliation(s)
- J C Schymick
- Laboratory of Neurogenetics, National Institute of Aging, NIH, Bethesda, Maryland, USA
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Rabinow B, Kipp J, Papadopoulos P, Wong J, Glosson J, Gass J, Sun CS, Wielgos T, White R, Cook C, Barker K, Wood K. Itraconazole IV nanosuspension enhances efficacy through altered pharmacokinetics in the rat. Int J Pharm 2007; 339:251-60. [PMID: 17398045 DOI: 10.1016/j.ijpharm.2007.02.030] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2006] [Revised: 02/26/2007] [Accepted: 02/27/2007] [Indexed: 11/17/2022]
Abstract
The goal of this research was to evaluate an intravenous itraconazole nanosuspension dosage form, relative to a solution formulation, in the rat. Itraconazole was formulated as a nanosuspension by a tandem process of microcrystallization followed by homogenization. Acute toxicity, pharmacokinetics, and distribution were studied in the rat, and compared with a solution formulation of itraconazole. Efficacy was studied in an immunocompromised rat model, challenged with a lethal dose of either itraconazole-sensitive or itraconazole-resistant C. albicans. Itraconazole nanosuspension was tolerated at significantly higher doses compared with a solution formulation. Pharmacokinetics of the nanosuspension were altered relative to the solution formulation. C(max) was reduced and t(1/2) was much prolonged. This occurred due to distribution of the nanosuspension to organs of the monocyte phagocytic system (MPS), followed by sustained release from this IV depot. The higher dosing of the drug, enabled in the case of the nanosuspension, led to higher kidney drug levels and reduced colony counts. Survival was also shown to be superior relative to the solution formulation. Thus, formulation of itraconazole as a nanosuspension enhances efficacy of this antifungal agent relative to a solution formulation, because of altered pharmacokinetics, leading to increased tolerability, permitting higher dosing and resultant tissue drug levels.
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Affiliation(s)
- Barrett Rabinow
- Baxter Pharmaceuticals and Technologies, Baxter Healthcare Corporation, Baxter Technology Park, Route 120 and Wilson Road, Round Lake, IL 60073, USA.
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Abstract
This review describes the structure and function of prolyl endopeptidase (PEP) enzymes and how they are being evaluated as drug targets and therapeutic agents. The most well studied PEP family has a two-domain structure whose unique seven-blade beta-propeller domain works with the catalytic domain to hydrolyze the peptide bond on the carboxyl side of internal proline residues of an oligopeptide substrate. Structural and functional studies on this protease family have elucidated the mechanism for peptide entry between the two domains. Other structurally unrelated PEPs have been identified, but have not been studied in detail. Human PEP has been evaluated as a pharmacological target for neurological diseases due to its high brain concentration and ability to cleave neuropeptides in vitro. Recently, microbial PEPs have been studied as potential therapeutics for celiac sprue, an inflammatory disease of the small intestine triggered by proline-rich gluten.
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Affiliation(s)
- J Gass
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA
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Muchitsch EM, Kubik SM, Auer W, Weber A, Wolfsegger M, Turecek PL, Kunzler J, Gass J, Schwarz HP. PRECLINICAL COMPARISON OF HUMAN ALPHA1-PROTEINASE INHIBITOR FRACTION IV-1 WITH A1PI FROM FRACTION IV-1+4. Chest 2006. [DOI: 10.1378/chest.130.4_meetingabstracts.183s-c] [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: 11/01/2022] Open
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Dizon DS, Gass J, Bandera C, Weitzen S, Clark M. Does one person provide it all? Defining the social support of women with cancer. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.8611] [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: 11/20/2022] Open
Abstract
8611 Background: Medical care encourages the appointment of a health care proxy in the event the patient cannot make decisions and it is assumed that this same person will serve other critical roles for the patient. Yet, this assumption that a patient truly relies on the same person for various supportive roles has never been formally evaluated. We hypothesized that there may be a large proportion of women with cancer who do not rely on the same person to be their primary support (PS), to participate in health care decision making as proxy (HCP), and serve as an emergency contact (EC). In order to evaluate this we conducted a questionnaire over a six-month period for women treated in the Program in Women’s Oncology (PWO). Methods: Patients seen at the PWO for a cancer diagnosis were invited to participate in a four part survey on social supports. Demographic data including age, race, cancer diagnosis, date of diagnosis, and current status were collected by chart review. Categorical variables were analyzed using Fisher’s Exact Test or Chi-square analysis. Results: Over 6 months, 224/228 women (98%) agreed to participate. The median age was 58 (range, 30–85). 138 (62%) had breast cancer, 78 (35%) had a gynecologic cancer, and 8 (3.5%) had a non-gyn/non-breast tumor (6/8 colorectal). 66% were married, 8% had a partner, and 26% did not identify a partner. In this sample, 43% did not name the same person as EC, PS, and HCP. 75% named the EC as HCP, 68% EC as PS, and 62% PS as HCP (p<0.05). Of married women (n=147) only 60% named their spouse to all three roles. Divorced women were not as likely to name a partner to one of these roles as were single women with partners. When asked to define primary support, women had diverse perspectives spanning the emotional, physical, intimate, and spiritual dimensions. Age did not appear to be a significant predictor of how these questions were answered. Conclusions: This study demonstrates the complex social support structures of women with cancer. Understanding these relationships may help to enable more effective patient-centered interventions designed to improve quality of care and ultimately the quality of life of cancer survivors. No significant financial relationships to disclose.
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Affiliation(s)
- D. S. Dizon
- Women & Infants Hospital, Providence, RI; Brown Medical School, Providence, RI
| | - J. Gass
- Women & Infants Hospital, Providence, RI; Brown Medical School, Providence, RI
| | - C. Bandera
- Women & Infants Hospital, Providence, RI; Brown Medical School, Providence, RI
| | - S. Weitzen
- Women & Infants Hospital, Providence, RI; Brown Medical School, Providence, RI
| | - M. Clark
- Women & Infants Hospital, Providence, RI; Brown Medical School, Providence, RI
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Gass J, Firth H, Burrows N. Oral 10 Osteoma cutis: a manifestation of GNAS1 mutation. Br J Dermatol 2006. [DOI: 10.1111/j.1365-2133.2006.7385_10.x] [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: 11/30/2022]
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Gass J, Firth H, Burrows N. Osteoma cutis: a manifestation of GNAS1 mutation. Ann Dermatol Venereol 2006. [DOI: 10.1016/s0151-9638(06)77592-5] [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: 11/27/2022]
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Zhang C, Sung CJ, Gass J, Lawrence WD, DeLellis RA. Squamous inclusion cyst with evidence of focal glandular differentiation in an axillary lymph node. Histopathology 2005; 47:539-40. [PMID: 16242006 DOI: 10.1111/j.1365-2559.2005.02146.x] [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] [Indexed: 11/29/2022]
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MacAusland S, Chong F, Galper S, Zinkin H, Gass J, Cady B, Chung M, Safaii H, Steinhoff M, Lawn-Tsao L, Ruthazer R, Wazer D. An Attempt to Independently Verify the Utility of the Van Nuys Prognostic Index(VNPI) for DCIS. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.101] [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: 12/01/2022]
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Dizon DS, Rojan A, Miller J, Schwartz J, Gordinier ME, Pires L, Disilvestro P, Moore R, Granai CO, Gass J, Legare RD. Cross-sensitivity between paclitaxel and docetaxel in a women’s cancers program. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- D. S. Dizon
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - A. Rojan
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - J. Miller
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - J. Schwartz
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - M. E. Gordinier
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - L. Pires
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - P. Disilvestro
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - R. Moore
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - C. O. Granai
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - J. Gass
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
| | - R. D. Legare
- Program in Women’s Oncology, Women & Infants’ Hosp, Providence, RI; Brown Univ Medcl Sch, Providence, RI
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Touzios J, Schulte W, Safron J, Diori J, Gass J, Ausman R. A hepatic artery infusion model in Yucatan minipigs. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.201] [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: 10/26/2022]
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Abstract
We present a phase-imaging method with an axial range that can in principle be arbitrarily large compared to the wavelength and does not involve the usual phase unwrapping by detection of phase discontinuity. The method consists of the generation and combination of two phase maps in a digital holography system by use of two separate wavelengths. For example, we reconstructed the surface of a spherical mirror with approximately 10-nm axial resolution and an axial range of approximately 3 microm.
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Affiliation(s)
- J Gass
- Department of Physics, University of South Florida, Tampa, Florida 33620, USA
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Cammack JN, White RD, Gordon D, Gass J, Hecker L, Conine D, Bruen US, Friedman M, Echols C, Yeh TY, Wilson DM. Evaluation of reproductive development following intravenous and oral exposure to DEHP in male neonatal rats. Int J Toxicol 2003; 22:159-74. [PMID: 12851149 DOI: 10.1080/10915810305098] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Di-(2-ethylhexyl)phthalate (DEHP) was administered to 3- to 5-day-old male Sprague-Dawley rats by daily intravenous injections of 60, 300, or 600 mg/kg/day or by daily oral gavage of 300 or 600 mg/kg/day for 21 days. Histopathological evaluation and organ weight measurements were performed on some animals after 21 days of dosing (primary group) and later on the recovery group animals that were held without further treatment until sexual maturity at approximately 90 days of age. No effects of any type were observed in animals treated intravenously with 60 mg/kg/day. Testicular changes, consisting of a partial depletion of the germinal epithelium and/or decrease in diameter of seminiferous tubules, were present in all animals of the 300- and 600-mg/kg/day groups after the 21-day dosing period. Testes weight decreased and liver weight increased in these animals. Testes changes were dose-related and generally more severe among animals dosed orally versus intravenously. In the recovery animals, a residual DEHP-induced decrease in seminiferous tubule diameter was present in the testis of several animals dosed orally at 300 and 600 mg/kg/day, but not in animals dosed intravenously. There was no germinal cell depletion or Sertoli cell alteration observed in any dose group at any time. Notably, no effects on sperm count, sperm morphology, or sperm motility were observed at 90 days of age in any of the groups.
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Affiliation(s)
- Jon N Cammack
- Baxter Healthcare Corporation, Round Lake, Illinois 60073, USA.
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McLennan A, Banks D, Gass J, Gault B, McKie A. Similarities not differences: an exploration of the impact of change upon a group of nursing lecturers within a university setting. Nurse Educ Today 2001; 21:391-397. [PMID: 11403586 DOI: 10.1054/nedt.2001.0572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The concepts of collaboration and partnership currently have extensive impact upon health care providers and higher education institutions. One of the challenges is to develop networks which will foster partnerships able to react, and contribute, to an ever-evolving educational culture. These themes are illustrated by using the example of one school of nursing and midwifery, and the collective experience of a number of its academic staff. By focusing on distinct features of collaboration (strategic planning, origins of change, group dynamics and building a community), the authors seek to explore the impact of an educational culture in an attempt to provide meaning to their recent experiences. In so doing, group identity is explored and the prospect for creating partnerships across disciplines ('similarities rather than differences') is considered.
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Affiliation(s)
- A McLennan
- The Robert Gordon University, School of Nursing and Midwifery, Northern College of Education, Hilton Campus, Hilton Place, Aberdeen, AB24 4FP, UK
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Abstract
This paper explores the differences and similarities that may exist in respect of using the interview method in phenomenological and grounded theory methodologies. Baker et al. set out to differentiate between method in grounded theory and phenomenology and concluded that it was essential to ensure that the method matches the research question being asked. However, the paper, whilst clear in intent to differentiate between the methodologies of phenomenology and grounded theory, does little to help the researcher in the differences that may exist in carrying out such research using the same method, that is, interviewing. Interviewing has become synonymous with qualitative research and may become the accepted method of data collection irrespective of methodology. We postulate that the interview as a method of data collection may be inconsistent with the underlying principles of the methodology (phenomenology or grounded theory). Should this be the case then the interview as a means of collecting data may be viewed as generic and lack a clear connection to the methodological framework. Such a position could be consistent with a critique of qualitative nursing research on the grounds of rigour.
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Affiliation(s)
- P Wimpenny
- Lecturer, School of Nursing and Midwifery, The Robert Gordon University, Aberdeen, Scotland.
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Gass J, Strobl M, Loibner A, Kosma P, Zähringer U. Synthesis of allyl O-[sodium(alpha-D-glycero-D-talo-2- octulopyranosyl)onate]-(2-->6)-2-acetamido-2-deoxy-beta-D-glucopyranosi de, a core constituent of the lipopolysaccharide from Acinetobacter calcoaceticus NCTC 10305. Carbohydr Res 1993; 244:69-84. [PMID: 8339301 DOI: 10.1016/0008-6215(93)80005-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Reaction of methyl 2,6-anhydro-2,3-dideoxy-D-manno-2-octenoate 1 with 3-chloroperoxybenzoic acid gave the 2,3-anhydro derivative 2, which was converted into the per-O-acetylated anomeric methyl glycosides of D-glycero-D-galacto-2-octulopyranosylonic acid in good yield. Subsequent inversion of the configuration at C-3 and deprotection afforded sodium (methyl beta-D-glycero-D-talo-2-octulopyranosid)onate. Alternatively, 2 was transformed into methyl (alpha-D-glycero-D-talo-2- octulopyranosyl bromide(onate derivatives. Reaction with methanol or allyl 2-acetamido-2-deoxy- 3,4-O-(1,1,3,3-tetraisopropyldisiloxan-1,3-diyl)-beta-D-g lycopyranoside, promoted by silver triflate, gave good yields of the corresponding orthoester derivatives. Me3Si triflate-catalyzed orthoester rearrangement and removal of the protecting groups afforded sodium O-(methyl alpha-D-glycero- D-talo-2-octulopyranosid)onate and the disacchanide, allyl O-[sodium(alpha-D-glycero-D-talo-2- octulopyranosyl)onate]-(2-->6)-2-acetamido-2-deoxy-beta-D-gl ucopyranoside in high yield.
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Affiliation(s)
- J Gass
- Institut für Chemie, Universität für Bodenkultur, Wien, Austria
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Buckman RF, Badellino MM, Mauro LH, Asensio JA, Caputo C, Gass J, Grosh JD. Penetrating cardiac wounds: prospective study of factors influencing initial resuscitation. J Trauma 1993; 34:717-25; discussion 725-7. [PMID: 8497007 DOI: 10.1097/00005373-199305000-00015] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A prospective study of 66 consecutive patients with cardiac wounds seen over a 27-month period is reported. No patient was excluded. Patients were stratified by injury mechanism and by physiologic scoring at admission using the cardiovascular-respiratory elements of the Trauma Score (CVRS). Admission cardiac rhythm was obtained in patients with a CVRS of 0 and a Glasgow Coma Scale (GCS) score of 3. Information concerning the anatomic extent of the cardiac wound, the presence or absence of tamponade, and the degree of injury to other structures was also collected prospectively. Seventy percent of the cardiac wounds were caused by gunshots. The probability of successful resuscitation was significantly related to mechanism of injury and physiologic condition on arrival. Among patients arriving with a CVRS of 0 and a GCS score of 3, survival correlated with cardiac rhythm. Pericardial tamponade did not prove to be an independent predictor of early survival. The presence of tamponade was statistically linked to the mechanism of injury. Transport by non-official conveyance was associated with a higher CVRS on arrival. Intoxication with alcohol or cocaine had no evident effect on resuscitation probability.
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Affiliation(s)
- R F Buckman
- Department of Surgery, Temple University School of Medicine, Philadelphia, Pennsylvania
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White JV, Gass J. Preparation of the calcified tibial artery for bypass grafting. Surg Gynecol Obstet 1990; 171:165-6. [PMID: 2382198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This method of preparation of calcified tibial arteries for bypass grafting produces softening of the arterial wall to permit vascular control and the construction of a technically precise anastomosis. The presence of the inflated intraluminal balloon during compression of the arterial wall inhibits violent cracking of the calcific skeleton and displacement of calcium plates into the lumen. This results in fewer intimal flaps and the preservation of an undisrupted outflow tract.
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Affiliation(s)
- J V White
- Department of Surgery, Temple University Medical School, Philadelphia, Pennsylvania 19140
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Kosma P, Gass J, Schulz G, Christian R, Unger FM. Artificial antigens. Synthesis of polyacrylamide copolymers containing 3-deoxy-D-manno-2-octulopyranosylonic acid (KDO) residues. Carbohydr Res 1987; 167:39-54. [PMID: 3319141 DOI: 10.1016/0008-6215(87)80266-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Starting from an anomeric mixture of methyl (allyl 4,5,7,8-tetra-O-acetyl-3-deoxy-alpha- and -beta-D-manno-2-octulopyranosid)onates, the glycosides sodium (allyl 3-deoxy-alpha- and -beta-D-manno-2-octulopyranosid)onate, sodium O-(sodium 3-deoxy-alpha-D-manno-2-octulopyranosylonate)-(2----4)-[allyl 3-deoxy-alpha-D-manno-2-octulopyranosid]onate and sodium (allyl 3-deoxy-7-O-beta-D-ribofuranosyl-beta-D-manno-2-octulopyranosid)++ +onate were prepared in several steps. Radical copolymerization of the allyl glycosides with acrylamide afforded linear macromolecular antigens containing mono- and di-saccharide residues corresponding to the KDO-region of Salmonella minnesota rough-form lipopolysaccharide and to partial structures of the capsular polysaccharide from Escherichia coli K 23, respectively. The copolymers were substituted by KDO-residues in a ratio of 1:18 +/- 2 (based on acrylamide) and had molecular masses of 60-100 kdaltons.
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Affiliation(s)
- P Kosma
- Institut für Chemie, Universität für Bodenkultur Wien, Vienna, Austria
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