39 results on '"M Sally"'
Search Results
2. The Salpeter Slope of the IMF Explained
- Author
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Oey, M. Sally, Stamatellos, Dimitris, editor, Goodwin, Simon, editor, and Ward-Thompson, Derek, editor
- Published
- 2014
- Full Text
- View/download PDF
3. The Low-Redshift Lyman Continuum Survey
- Author
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Saldana-Lopez, Alberto, primary, Schaerer, Daniel, additional, Chisholm, John, additional, Flury, Sophia R., additional, Jaskot, Anne E., additional, Worseck, Gábor, additional, Makan, Kirill, additional, Gazagnes, Simon, additional, Mauerhofer, Valentin, additional, Verhamme, Anne, additional, Amorín, Ricardo O., additional, Ferguson, Harry C., additional, Giavalisco, Mauro, additional, Grazian, Andrea, additional, Hayes, Matthew J., additional, Heckman, Timothy M., additional, Henry, Alaina, additional, Ji, Zhiyuan, additional, Marques-Chaves, Rui, additional, McCandliss, Stephan R., additional, Oey, M. Sally, additional, Östlin, Göran, additional, Pentericci, Laura, additional, Thuan, Trinh X., additional, Trebitsch, Maxime, additional, Vanzella, Eros, additional, and Xu, Xinfeng, additional
- Published
- 2022
- Full Text
- View/download PDF
4. The Low-Redshift Lyman Continuum Survey Unveiling the ISM properties of low-z Lyman-continuum emitters
- Author
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Saldana-Lopez, Alberto, Schaerer, Daniel, Chisholm, John, Flury, Sophia R., Jaskot, Anne E., Worseck, Gábor, Makan, Kirill, Gazagnes, Simon, Mauerhofer, Valentin, Verhamme, Anne, Amorin, Ricardo O., Ferguson, Harry C., Giavalisco, Mauro, Grazian, Andrea, Hayes, Matthew J., Heckman, Timothy M., Henry, Alaina, Ji, Zhiyuan, Marques-Chaves, Rui, McCandliss, Stephan R., Oey, M. Sally, Östlin, Göran, Pentericci, Laura, Thuan, Trinh X., Trebitsch, Maxime, Vanzella, Eros, Xu, Xinfeng, Saldana-Lopez, Alberto, Schaerer, Daniel, Chisholm, John, Flury, Sophia R., Jaskot, Anne E., Worseck, Gábor, Makan, Kirill, Gazagnes, Simon, Mauerhofer, Valentin, Verhamme, Anne, Amorin, Ricardo O., Ferguson, Harry C., Giavalisco, Mauro, Grazian, Andrea, Hayes, Matthew J., Heckman, Timothy M., Henry, Alaina, Ji, Zhiyuan, Marques-Chaves, Rui, McCandliss, Stephan R., Oey, M. Sally, Östlin, Göran, Pentericci, Laura, Thuan, Trinh X., Trebitsch, Maxime, Vanzella, Eros, and Xu, Xinfeng
- Abstract
Aims. Combining 66 ultraviolet (UV) spectra and ancillary data from the recent Low-Redshift Lyman Continuum Survey (LzLCS) and 23 LyC observations by earlier studies, we form a statistical sample of star-forming galaxies at z similar to 0.2-0.4 with which we study the role of cold interstellar medium (ISM) gas in the leakage of ionizing radiation. We also aim to establish empirical relations between the H I neutral and low-ionization state (LIS) absorption lines with different galaxy properties. Methods. We first constrain the massive star content (stellar ages and metallicities) and UV attenuation by fitting the stellar continuum with a combination of simple stellar population models. The models, together with accurate LyC flux measurements, allow us to determine the absolute LyC photon escape fraction for each galaxy (f(esc)(abs)). We then measure the equivalent widths and residual fluxes of multiple H I and LIS lines, and the geometrical covering fraction of the UV emission, adopting the picket-fence model. Results. The LyC escape fraction spans a wide range, with a median f(esc)(abs) (0.16, 0.84 quantiles) of 0.04 (0.02, 0.20), and 50 out of the 89 galaxies detected in the LyC (1 sigma upper limits of f(esc)(abs) less than or similar to 0.01 for non-detections, typically). The H I and LIS line equivalent widths scale with the UV luminosity and attenuation, and inversely with the residual flux of these lines. Additionally, Ly alpha equivalent widths scale with both the H I and LIS residual fluxes, but anti-correlate with the corresponding H I or LIS equivalent widths. The H I and LIS residual fluxes are correlated, indicating that the neutral gas is spatially traced by the low-ionization transitions. We find that the observed trends of the absorption lines and the UV attenuation are primarily driven by the geometric covering fraction of the gas. The observed nonuniform gas coverage also demonstrates that LyC photons escape through low-column-density channels in t
- Published
- 2022
- Full Text
- View/download PDF
5. The Salpeter Slope of the IMF Explained
- Author
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Oey, M. Sally, primary
- Published
- 2014
- Full Text
- View/download PDF
6. Hepatitis C virus as possible etiologic factor in idiopathic nephrotic syndrome among Egyptian patients
- Author
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Samir M Sally, Fawzy M Khalil, and Shareif Negm
- Subjects
hepatitis c virus ,nephrotic syndrome ,egypt ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Hepatitis C virus (HCY) infection is associated with a variety of extrahepatic disorders. including cryoglobulinaernia and glomerulonephritis. Hepatitis C virus (HCV) glornerulopathy may be present as a primary glomerular disease. Our study included 50 adult Egyptian patients who were diagnosed as idiopathic nephrotic syndrome (NS). We described the clinical, pathological and immunological features of these patients. There was a high prevalence (50%) of HCV infection among these patients. The studied risk factors included history of; blood transfusion (16%) operation (24%) or antibilharzial drugs (76%). Hepatomegaly was observed in 24% of cases. Mernbranoproliferative glomerulonephritis (MPGN) was the commonest pathological type associated with HCV (48%). Other patterns included focal segmental glomerulosclerosis (FSGS) in 32%, membranous in 8% and minimal change glomerulonephritis in 12%. Cryoglobulins were detected in 5.6% of 18 patients with HCV and idiopathic NS. Patients having HCV infection and membranoproliferative glomerulonephritis had hypocomplementemia and antinuclear antibodies were detected in 41.6%.Realising that HCV infection may be linked to different glomerulopathies, thus routine screening for HCV should be considered in serologic work-up of patients with glomerulopathy. Nevertheless, seroepiderniological studies including larger number of patients with glornerulopathy are therefore necessary to specify its relation with HCV infection.
- Published
- 1999
- Full Text
- View/download PDF
7. Large-scale genome-wide association meta-analysis of endometriosis reveals 13 novel loci and genetically-associated comorbidity with other pain conditions
- Author
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C I Daniel, U Outi, M Michail, D Thomas, S Beata, Cecilia Csk., D M Hougaard, G T Reynir, P B Mortensen, M A Stacey, L Siew-Kee, T Kathyrn, R Hanna, S Lilja, K Michiaki, S Merli, S Dominik, Digna V-Er., H Hjalgrim, Sarah H-C., N Mette, O Catherine, Alison, Mette Nyegaard, G Genevieve, Daniel F. Gudbjartsson, S Tomasz, G Jane, P Sandosh, V Katy, Chloe E. James, C Paraskevi, Anders D. Børglum, S Marina, R Nilufer, S J Andrew, S Marcin, V Arne, Kari Stefansson, T F Hansen, P Maire, H R Holly, D V Immaculata, Karina Banasik, H Sahar, M P Andrew, P Jennum, K Yoichiro, C Caterina, H K Dharani, M Reedik, P Manish, Kristoffer Sølvsten Burgdorf, Sandra B. Andersen, K Bartosz, Anna S-G., M Massimo, S Valgerdur, Thomas Werge, S Kari, T Y Joyce, S Yadav, M W Grant, S Krzysztof, V Allison, Hreinn Stefansson, B S Kristoffer, B Karina, Henrik Ullum, S H Blair, Marta S-K., P David-Emlyn, K Peter, S Tim, M Charoula, S Andres, W David, W Thomas, K Ewa, S Amy, D Rebecca, S Sini, A Shan, A Ragnheidur, F N Jenny, G N George, Peter Raw., S Brunak, M Petersen, A Sosuke, M Stuart, N Camran, T Constance, L R Marc, Erik Elgaard Sørensen, M Hannu, U Þorsteinsdottir, N R Dale, P J David, C Erikstrup, H M Paarup, D Amy, P Grzegorz, Ole Birger Pedersen, J Marjo-Riitta, F Pierre, Tina H-S., Dorien O, B M Christian, Z T Krina, G Ayush, T Gudmar, Gregor B.E. Jemec, T Carla, M Blazej, L Matthew, M Sally, Y B Piraye, Philippa, C Archie, H W Andrew, E Todd, K R Nielsen, G C Linda, H Caroline, and N Margit
- Subjects
Infertility ,0303 health sciences ,030219 obstetrics & reproductive medicine ,business.industry ,Pelvic pain ,Endometriosis ,Genome-wide association study ,Disease ,Bioinformatics ,medicine.disease ,Comorbidity ,3. Good health ,03 medical and health sciences ,0302 clinical medicine ,Meta-analysis ,medicine ,medicine.symptom ,business ,030304 developmental biology ,Genetic association - Abstract
Endometriosis is a common complex inflammatory condition characterised by the presence of endometrium-like tissue outside the uterus, mainly in the pelvic area. It is associated with chronic pelvic pain and infertility, and its pathogenesis remains poorly understood. The disease is typically classified according to the revised American Fertility Society (rAFS) 4-stage surgical assessment system, although stage does not correlate well with symptomatology or prognosis. Previously identified genetic variants mainly are associated with stage III/IV disease, highlighting the need for further phenotype-stratified analysis that requires larger datasets. We conducted a meta-analysis of 15 genome-wide association studies (GWAS) and a replication analysis, including 58,115 cases and 733,480 controls in total, and sub-phenotype analyses of stage I/II, stage III/IV and infertility-associated endometriosis cases. This revealed 27 genetic loci associated with endometriosis at the genome-wide p-value threshold (P−8), 13 of which are novel and an additional 8 novel genes identified from gene-based association analyses. Of the 27 loci, 21 (78%) had greater effect sizes in stage III/IV disease compared to stage I/II, 1 (4%) had greater effect size in stage I/II compared to stage III/IV and 17 (63%) had greater effect sizes when restricted to infertility-associated endometriosis cases compared to overall endometriosis. These results suggest that specific variants may confer risk for different sub-types of endometriosis through distinct pathways. Analyses of genetic variants underlying different pain symptoms reported in the UK Biobank showed that 7/9 had positive significant (p3) positive genetic correlations with endometriosis, suggesting a genetic basis for sensitivity to pain in general. Additional conditions with significant positive genetic correlations with endometriosis included uterine fibroids, excessive and irregular menstrual bleeding, osteoarthritis, diabetes as well as menstrual cycle length and age at menarche. These results provide a basis for fine-mapping of the causal variants at these 27 loci, and for functional follow-up to understand their contribution to endometriosis and its potential subtypes.
- Published
- 2018
8. Characteristics of systemic lupus erythematosus in a sample of the Egyptian population: a retrospective cohort of 1109 patients from a single center
- Author
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R M Elsman, Doaa Attia, A M El Nahas, Lobna A. Maged, M Shaaban, H Abdel Kafy, S Saad, H El Hadary, T El Hadidi, R M El Refai, K El Hadidi, M Sharaf, Mervat Eissa, G El Mardenly, D El Dessouki, N M Abdel Baki, H Naji, N. El Ghobashy, Iman I. El-Gazzar, H El Naggar, H Allah El Rwiny, S M Sally, Shada Ghoniem, Nesreen Sobhy, Fatema T. Elgengehy, W Abdelrahaman, M Galal, Angie Y Yousri, Basma M Medhat, and Reham Soliman
- Subjects
Adult ,Male ,Pediatrics ,medicine.medical_specialty ,Time Factors ,Adolescent ,Population ,Comorbidity ,030204 cardiovascular system & hematology ,Single Center ,Severity of Illness Index ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Sex Factors ,Rheumatology ,immune system diseases ,Risk Factors ,medicine ,Prevalence ,Humans ,Lupus Erythematosus, Systemic ,Age of Onset ,skin and connective tissue diseases ,education ,Child ,Aged ,Autoantibodies ,Retrospective Studies ,030203 arthritis & rheumatology ,education.field_of_study ,Lupus erythematosus ,Systemic lupus erythematosus ,Leukopenia ,business.industry ,Medical record ,Retrospective cohort study ,Health Status Disparities ,Middle Aged ,medicine.disease ,Prognosis ,Child, Preschool ,Egypt ,Female ,medicine.symptom ,business ,Malar rash ,Biomarkers - Abstract
Introduction Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease that can vary among different ethnic and racial groups. Objective The objective of this paper is to study the prevalence of various manifestations of SLE in a sample of the Egyptian population. Patients and methods Information in this study was derived from the medical records of SLE patients who sought medical advice at a private clinic in Cairo from January 1980 to June 2016. Results This study included 1109 SLE patients, of whom 114 (10.3%) were males and 995 were females (89.7%). Mean age of onset was 25.89 ± 10.81 years, while the median of disease duration from the onset of the disease till the last recorded visit was 26 months. The most common cumulative manifestations were arthritis (76.7%), malar rash (48.5%), leukopenia (45.7%), and photosensitivity (45.6%). A total of 33.1% of the patients had nephritis, and neuropsychiatric lupus was present in 6.4% of the patients. Secondary antiphospholipid syndrome was present in 11.5% of the patients. Antinuclear antibody and anti-double-stranded deoxyribonucleic acid were present in 1060/1094 (96.9%) and 842/1062 (79.3%) of the patients, respectively. Antiphospholipid antibodies were present in 266/636 (41.8%) of the patients, anti-Smith in 54/240 (22.5%), anti-SSA/Ro in 61/229 (20.4%), and anti-SSB/La in 32/277 (11.6%) of the patients. Male patients had a statistically higher prevalence of nephritis ( p = 0.01), whereas arthritis and alopecia were statistically higher in females ( p = 0.012 and p = 0.006, respectively). Patients with juvenile onset had a statistically higher prevalence of nephritis and seizures ( p 0.001 and p = 0.012, respectively). Conclusions Arthritis and malar rash represented the most common clinical manifestations. Male and juvenile-onset patients had a predilection toward a more severe disease. These results are in agreement with many studies conducted in the Middle East and worldwide. On the other hand, major organ involvement was exceptionally low, which is contradictory to several reports from the Middle East and across the globe.
- Published
- 2018
9. SpS5 - III. Matter ejection and feedback
- Author
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Nazé, Yaël, Che, Xiao, Cox, Nick L. J., Groh, José H., Guerrero, Martin, Kervella, Pierre, Lee, Chien-De, Matsuura, Mikako, Oey, M. Sally, Stringfellow, Guy S., Wachter, Stephanie, and Montmerle, Thierry
- Abstract
The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs and LBVs. As shown in the last years, the potential of IR for their study is twofold: first, IR can help discover many previously unknown nebulae, leading to the identification of new massive stars as their progenitors; second, IR can help characterize the nebular features. Current and new IR facilities thus pave the way to a better understanding of the feedback from massive stars
- Published
- 2017
10. SpS5 - III. Matter ejection and feedback
- Author
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Mikako Matsuura, Chien De Lee, X. Che, Pierre Kervella, Stephanie Wachter, Martín A. Guerrero, Nick L. J. Cox, M. Sally Oey, Guy S. Stringfellow, Jose H. Groh, and Yaël Nazé
- Subjects
Physics ,Space and Planetary Science ,Astronomy and Astrophysics - Abstract
The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs and LBVs. As shown in the last years, the potential of IR for their study is twofold: first, IR can help discover many previously unknown nebulae, leading to the identification of new massive stars as their progenitors; second, IR can help characterize the nebular features. Current and new IR facilities thus pave the way to a better understanding of the feedback from massive stars.
- Published
- 2012
11. Journal Finder, a Second Look
- Author
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Terry W. Brandsma, Elizabeth R Bernhardt, and Dana M Sally
- Subjects
World Wide Web ,Service (business) ,Computer science ,General partnership ,Collection management ,Interlibrary loan ,Library and Information Sciences - Abstract
Since The University of North Carolina at Greensboro's Jackson Library introduced Journal Finder in August 2001, the service has grown and evolved. Its features and capabilities have been expanded, enhanced, and refined, and a partnership program has been developed. Journal Finder enjoys significant initial success and appears to meet a real need in the research life of faculty and students. Additionally, Journal Finder has revealed several user trends with implications for the library, including the use of print serials, photocopying, interlibrary loan, and document delivery/pay-per-view, and it continues to provide insights and data for serials collection management decisions. Serials Review 2003; 29:287–294.
- Published
- 2003
12. Journal Finder: A Solution for Comprehensive and Unmediated Access to Journal Articles
- Author
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Terry W. Brandsma, Dana M Sally, and Elizabeth R Bernhardt
- Subjects
Service (business) ,Structure (mathematical logic) ,World Wide Web ,Information retrieval ,Interface (Java) ,Relational database ,Computer science ,Order (business) ,Information access ,Interlibrary loan ,Library and Information Sciences ,GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries) - Abstract
The University of North Carolina at Greensboro's Jackson Library has introduced a new journal information service that makes finding and accessing journal articles easier and more effective than traditional methods. Journal Finder is part of a broader program to provide location-independent information access and through a single interface it allows users to connect directly to an electronic, full-text version of a journal; obtain local holdings and format information about a specific title; order a specific article from any journal through an unmediated document delivery service or interlibrary loan; and search other libraries' catalogs for journal holdings data. Developed in-house using a relational database structure, Journal Finder offers unique service advantages, while signaling a shift in the delivery of journal information from print subscriptions to access by means of separate articles in electronic or print formats. Serials Review 2002; 28:13–20.
- Published
- 2002
13. Journal Finder
- Author
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Terry W Brandsma, Elizabeth R Bernhardt, and Dana M Sally
- Subjects
Library and Information Sciences - Published
- 2002
14. The Salpeter Slope of the IMF Explained
- Author
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M. Sally Oey
- Subjects
Physics ,010308 nuclear & particles physics ,Star formation ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,Stars ,Physics::Space Physics ,0103 physical sciences ,Cluster (physics) ,Astrophysics::Solar and Stellar Astrophysics ,10. No inequality ,010303 astronomy & astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
If we accept a paradigm that star formation is a self-similar, hierarchical process, then the Salpeter slope of the IMF for high-mass stars can be simply and elegantly explained as follows. If the intrinsic IMF at the smallest scales follows a simple –2 power-law slope, then the steepening to the –2.35 Salpeter value results when the most massive stars cannot form in the lowest-mass clumps of a cluster. It is stressed that this steepening must occur if clusters form hierarchically from clumps, and the lowest-mass clumps can form stars. This model is consistent with a variety of observations as well as theoretical simulations.
- Published
- 2014
15. Prostitution, Simony, and Fees for Service: Walzer's Theory of Justice and a Defense of Communally Funded Information against the Tyranny of the Marketplace
- Author
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Dana M Sally
- Subjects
Service (business) ,Library management ,Law ,Information system ,Information industry ,Sociology ,Meaning (existential) ,Library and Information Sciences ,Economic Justice ,Information science ,Simony - Abstract
The practice of charging fees for service in American libraries remains controversial, primarily because notions at the foundation of this issue lack a thorough and coherent theoretical framework within which they can be understood and properly related. By employing a theory of justice developed by Michael Walzer--one that argues for distributing goods on the basis of principles inherent in their shared meanings--to reframe the concepts at the root of the fee issue, I argue that information should be distributed in ways that are in keeping with its meaning in contemporary American culture. Within the United States, information is understood to be a good in the "sphere" of basic welfare and security, and, therefore (following Walzer's theory), it should be distributed on the basis of the principle appropriate to the meaning of goods in that sphere--communal provision (within limits) based on need and not on the basis of the distributive principle appropriate to the marketplace--money.
- Published
- 2001
16. The influence of massive stars on the interstellar medium
- Author
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M. Sally Oey
- Subjects
Physics ,Astrophysics::High Energy Astrophysical Phenomena ,Molecular cloud ,Interstellar cloud ,Astronomy ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Galaxy ,Interstellar medium ,Stars ,Supernova ,Ionization ,Galaxy formation and evolution ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
On scales ranging from pcs to kpcs, the relationship between stellar and gaseous galactic components forms the basis for interpreting observations of galaxies and understanding galaxy formation and evolution. Feedback effects from massive stars dominate the structure, ionization, kinematics, and enrichment of the gaseous ISM in star-forming galaxies. On galactic scales, the ionizing radiation from these stars creates populations of H II regions and the diffuse, warm ionized medium. Likewise, superbubbles created by stellar winds and supernovae strongly influence the structure, kinematics, and balance of the multiphase ISM. This contribution reviews these feedback effects of massive stars on the global ISM.
- Published
- 1999
17. Massive stars and their interstellar environment in the Magellanic Clouds
- Author
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M. Sally Oey, Sungeun Kim, Tatyana M. Lozinskaya, and Michael A. Dopita
- Subjects
Physics ,Stars ,Astrophysics::High Energy Astrophysical Phenomena ,Molecular cloud ,Interstellar cloud ,Astrophysics::Solar and Stellar Astrophysics ,Astronomy ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
The winds of massive stars play a major role in setting up and controlling both the phase structure of the interstellar medium in galaxies and the vertical distribution of gas in galactic disks. In turn, these processes provide feedback into control of the star formation rate. Thanks to their proximity, these processes can be studied in detail in the Magellanic Clouds. Here we describe the results of a deep emission-line image survey of the ring nebula population, and a global high-resolution H I and H II survey of the Large Magellanic Cloud. These data provide a new insight into the process of feedback between the disk and the halo gas in disk galaxies in general, and the LMC in particular.
- Published
- 1999
18. Cross-resistance studies on two K562 sublines resistant to diaziridinylbenzoquinones
- Author
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Dee Whittaker, Tina D Howard, M Sally Haran, Timothy H Ward, John Butler, and Amanda J Watson
- Subjects
Aziridines ,Drug Resistance ,Drug resistance ,Reductase ,Biochemistry ,Cell Line ,Superoxide dismutase ,chemistry.chemical_compound ,Benzoquinones ,NAD(P)H Dehydrogenase (Quinone) ,Humans ,ATP Binding Cassette Transporter, Subfamily B, Member 1 ,Cross-resistance ,NADPH-Ferrihemoprotein Reductase ,Pharmacology ,Diaziquone ,Dose-Response Relationship, Drug ,biology ,Superoxide Dismutase ,Glutathione ,Molecular biology ,Multiple drug resistance ,chemistry ,Cell culture ,biology.protein ,Oxidoreductases ,Cell Division - Abstract
Two resistant K562 sublines have been developed by treatment with AZQ (2,5-bis(carboethoxyamino)-3,6-diaziridinyl-1,4-benzoquinone) and BZQ (2,5-bis(2-hydroxyethylamino)-3,6-diaziridinyl-1,4-benzoquinone). The id 50 values for AZQ on K562, the AZQ-resistant sublines (AZQR) and the BZQ-resistant sublines (BZQR) were 0.063, 1.47 and 0.244 μM, respectively. The relative id 50 values for BZQ on the same cell lines were 0.2, 0.67 and 0.83 μM, respectively. Although it is generally believed that these two quinones function by different mechanisms, the two sublines have similar decreased levels of cytochrome P-450 reductase and DT-diaphorase and increased levels of glutathione and superoxide dismutase, compared to the parent cell line. The sublines are also cross-resistant to adriamycin, mitozolamide, N -methyl- N ′-nitro- N -nitrosoguanidine (MNNG) and mitomycin C. This work indicates the potential multifactorial mechanisms by which drug resistance can be induced in cell lines in the absence of conventional ‘P’-glycoprotein multidrug resistance.
- Published
- 1995
19. Hepatitis C virus as possible etiologic factor in idiopathic nephrotic syndrome among Egyptian patients
- Author
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Fawzy M Khalil, Shareif Negm, and Samir M Sally
- Subjects
medicine.medical_specialty ,Blood transfusion ,Anti-nuclear antibody ,business.industry ,Hepatitis C virus ,medicine.medical_treatment ,Glomerulonephritis ,medicine.disease_cause ,medicine.disease ,Gastroenterology ,Virus ,Serology ,Psychiatry and Mental health ,Neuropsychology and Physiological Psychology ,Glomerulopathy ,Internal medicine ,Immunology ,Medicine ,business ,Pathological - Abstract
Hepatitis C virus (HCY) infection is associated with a variety of extrahepatic disorders. including cryoglobulinaernia and glomerulonephritis. Hepatitis C virus (HCV) glornerulopathy may be present as a primary glomerular disease. Our study included 50 adult Egyptian patients who were diagnosed as idiopathic nephrotic syndrome (NS). We described the clinical, pathological and immunological features of these patients. There was a high prevalence (50%) of HCV infection among these patients. The studied risk factors included history of; blood transfusion (16%) operation (24%) or antibilharzial drugs (76%). Hepatomegaly was observed in 24% of cases. Mernbranoproliferative glomerulonephritis (MPGN) was the commonest pathological type associated with HCV (48%). Other patterns included focal segmental glomerulosclerosis (FSGS) in 32%, membranous in 8% and minimal change glomerulonephritis in 12%. Cryoglobulins were detected in 5.6% of 18 patients with HCV and idiopathic NS. Patients having HCV infection and membranoproliferative glomerulonephritis had hypocomplementemia and antinuclear antibodies were detected in 41.6%. Realising that HCV infection may be linked to different glomerulopathies, thus routine screening for HCV should be considered in serologic work-up of patients with glomerulopathy. Nevertheless, seroepiderniological studies including larger number of patients with glornerulopathy are therefore necessary to specify its relation with HCV infection.
- Published
- 1999
20. SpS5 - III. Matter ejection and feedback
- Author
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Nazé, Yaël, primary, Che, Xiao, additional, Cox, Nick L. J., additional, Groh, José H., additional, Guerrero, Martin, additional, Kervella, Pierre, additional, Lee, Chien-De, additional, Matsuura, Mikako, additional, Oey, M. Sally, additional, Stringfellow, Guy S., additional, and Wachter, Stephanie, additional
- Published
- 2012
- Full Text
- View/download PDF
21. Empirical evidence suggesting a stellar upper-mass limit
- Author
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Oey, M. Sally, primary
- Published
- 2006
- Full Text
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22. Empirical evidence suggesting a stellar upper-mass limit
- Author
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M. Sally Oey
- Subjects
Physics ,Spiral galaxy ,Initial mass function ,Stellar collision ,Astronomy ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Star count ,Astrophysics ,Space and Planetary Science ,Stellar dynamics ,Astrophysics::Solar and Stellar Astrophysics ,Limit (mathematics) ,Astrophysics::Galaxy Astrophysics - Abstract
While theoretical understanding remains to be clarified regarding the mechanisms that may or may not limit stellar masses, it is possible to empirically evaluate the existence of an upper-mass limit. ZAMS masses of the most massive stars have been estimated for a range of environments in our local Milky Way neighborhood and the Magellanic Clouds. Various statistical techniques demonstrate the existence of an upper-mass limit in this stellar sample.
- Published
- 2006
23. No evidence of increased risk of colorectal cancer in individuals heterozygous for the Cys282Tyr haemochromatosis mutation
- Author
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Macdonald, Graeme A, primary, Tarish, Jabsar, additional, Whitehall, Vicki Jl, additional, M, Sally J, additional, Mellick, George D, additional, Buttenshaw, Ron L, additional, Johnson, Anthony G, additional, Young, Joanne, additional, and Leggett, Barbara A, additional
- Published
- 1999
- Full Text
- View/download PDF
24. The influence of massive stars on the interstellar medium
- Author
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Oey, M. Sally, primary
- Published
- 1999
- Full Text
- View/download PDF
25. Effect of anti-schistosomal treatment on schistosomal-specific nephropathy
- Author
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M A, Sobh, F E, Moustafa, S M, Sally, A M, Deelder, and M A, Ghoniem
- Subjects
Adult ,Male ,Glomerulosclerosis, Focal Segmental ,Kidney Glomerulus ,Antibodies, Helminth ,Nitroquinolines ,Glomerulonephritis, Membranous ,Oxamniquine ,Praziquantel ,Schistosomiasis mansoni ,Glomerulonephritis ,Antigens, Helminth ,Humans ,Female ,Follow-Up Studies - Abstract
Twenty-one patients with schistosomal-specific nephropathy (18 nephrotics and three with non-nephrotic proteinuria) were given anti-schistosomal treatment (oxamniquine and praziquantel). The schistosomal specificity of the kidney lesions was assessed by the detection of schistosomal-specific antigens (CAA and CCA) and antibodies deposited in the renal glomeruli of these patients. After anti-schistosomal treatment, the patients were followed for clinical and laboratory changes occurring within 12 months. In addition, 15 patients had a second kidney biopsy and the histopathological and the immunopathological findings were compared with those observed in the first biopsy. Based on clinical, laboratory and histopathological evaluations, none of the patients subjected to the study showed regression of the kidney lesion following antischistosomal treatment; in fact three patients showed progression in their lesions, one of them reaching end-stage renal failure. The histopathology of these three cases was focal segmental glomerulosclerosis. Our data suggest that anti-schistosomal treatment in an established disease state, will not produce remission.
- Published
- 1988
26. A home-visiting intervention programme with Jamaican mothers and children
- Author
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M. Sally, P. Desai, and Grantham McGregor
- Subjects
Mental development ,medicine.medical_specialty ,Jamaica ,Child rearing ,Matched control ,Intelligence ,Home Care Services ,Child Rearing ,Developmental Neuroscience ,Family medicine ,Intervention (counseling) ,Scale (social sciences) ,Child, Preschool ,Intellectual Disability ,Pediatrics, Perinatology and Child Health ,medicine ,Humans ,Female ,Neurology (clinical) ,Psychology - Abstract
In order to promote better mental development in three-year-old children from poor Jamaican families, a home-visiting project was carried out with the aim of helping mothers to interact with and stimulate their children. Homes were visited once a week, and the use of toys and books was demonstrated to the mothers. The play equipment was then left with the family and exchanged at the following visit. After a maximum of 29 visits, the children had made significant gains (average 13 IQ points) compared with children in a previously matched control group. The mothers' knowledge of child-rearing had also improved. Similar intervention programmes may be useful on a larger scale, and need not be expensive if full use is made of the mothers' help.
- Published
- 1975
27. A Prospective Randomized Therapeutic Trial for Schistosomal Specific Nephropathy
- Author
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Mohamed A. Sobh, Fatma E. Moustafa, Samir M. Sally, Mohamed Ashraf Foda, Ander M. Deelder, and Mohamed A. Ghoniem
- Published
- 1989
28. SpS5 - III. Matter ejection and feedback
- Author
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Nazé, Yaël, Che, Xiao, Cox, Nick L. J., Groh, José H., Guerrero, Martin, Kervella, Pierre, Lee, Chien-De, Matsuura, Mikako, Oey, M. Sally, Stringfellow, Guy S., Wachter, Stephanie, Montmerle, Thierry, Nazé, Yaël, Che, Xiao, Cox, Nick L. J., Groh, José H., Guerrero, Martin, Kervella, Pierre, Lee, Chien-De, Matsuura, Mikako, Oey, M. Sally, Stringfellow, Guy S., Wachter, Stephanie, and Montmerle, Thierry
- Abstract
The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs and LBVs. As shown in the last years, the potential of IR for their study is twofold: first, IR can help discover many previously unknown nebulae, leading to the identification of new massive stars as their progenitors; second, IR can help characterize the nebular features. Current and new IR facilities thus pave the way to a better understanding of the feedback from massive stars
29. Woman's Cause: The Jewish Woman's Movement in England and the United States, 1881-1933(review)
- Author
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M., Sally and Miller
- Published
- 1991
30. Carta of Florence Against Ageism: No Place for Ageism in Health Care.
- Author
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Ungar A, Cherubini A, Fratiglioni L, de la Fuente-Núñez V, Fried LP, Sally Krasovitsky M, Tinetti M, Officer A, Vellas B, and Ferrucci L
- Subjects
- Humans, Delivery of Health Care, Stereotyping, Ageism
- Published
- 2024
- Full Text
- View/download PDF
31. Thromboelastography profiles for controlled circulatory death donors: Validating the role of heparin.
- Author
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Crannell WC, Sally M, McConnell K, Connelly C, Maynard E, Dewey E, Abt P, and Enestvedt CK
- Subjects
- Brain Death, Death, Graft Survival, Heparin, Humans, Retrospective Studies, Thrombelastography, Tissue Donors, Liver Transplantation, Tissue and Organ Procurement
- Abstract
Controlled donation after circulatory death (cDCD) liver transplants are associated with increased ischemic-type biliary complications. Microvascular thrombosis secondary to decreased donor fibrinolysis may contribute to bile duct injury. We hypothesized that cDCD donors are hypercoagulable with impaired fibrinolysis and aim to use thromboelastography to characterize cDCD coagulation profiles., (© 2021 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2022
- Full Text
- View/download PDF
32. The role of deceased donor liver biopsy: An analysis of 5449 liver transplant recipients.
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Patel MS, Mohebali J, Coe TM, Sally M, Groat T, Niemann CU, Malinoski DJ, and Vagefi PA
- Subjects
- Biopsy, Graft Survival, Humans, Liver, Living Donors, Tissue Donors, Transplant Recipients, Liver Transplantation, Tissue and Organ Procurement
- Abstract
Background: No standard exists for the use of deceased donor liver biopsy during procurement. We sought to evaluate liver biopsy and the impact of findings on outcomes and graft utilization., Methods: A prospective observational study of donors after neurologic determination of death was conducted from 02/2012-08/2017 (16 OPOs). Donor data were collected through the UNOS Donor Management Goals Registry Web Portal and linked to the Scientific Registry of Transplant Recipients (SRTR) for recipient outcomes. Recipients of biopsied donor livers (BxDL) were studied and a Cox proportional hazard analysis was used to identify independent predictors of 1-year graft survival., Results: Data from 5449 liver transplant recipients were analyzed, of which 1791(33%) received a BxDL. There was no difference in graft or patient survival between the non-BxDL and BxDL recipient groups. On adjusted analysis of BxDL recipients, macrosteatosis (21%-30%[n = 148] and >30%[n = 92]) was not found to predict 1-year graft survival, whereas increasing donor age (HR1.02), donor Hispanic ethnicity (HR1.62), donor INR (HR1.18), and recipient life support (HR2.29) were., Conclusions: Excellent graft and patient survival can be achieved in recipients of BxDL grafts. Notably, as demonstrated by the lack of effect of macrosteatosis on survival, donor to recipient matching may contribute to these outcomes., (© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2020
- Full Text
- View/download PDF
33. The Impact of Therapeutic Hypothermia Used to Treat Anoxic Brain Injury After Cardiopulmonary Resuscitation on Organ Donation Outcomes.
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Wright C, Patel MS, Gao X, Witt M, Sally M, Groat T, Crutchfield M, Neidlinger N, Pilot M, and Malinoski DJ
- Subjects
- Adult, Cardiopulmonary Resuscitation, Delayed Graft Function, Female, Humans, Kidney Transplantation, Male, Middle Aged, Prospective Studies, Hypothermia, Induced statistics & numerical data, Hypoxia, Brain therapy, Tissue Donors statistics & numerical data
- Abstract
Therapeutic hypothermia (TH) is clinically used to improve neurologic outcomes in patients with anoxic brain injury after cardiopulmonary resuscitation (CPR). For patients that regress and become organ donors after neurologic determination of death (DNDDs), the impact of TH received before determination of death on organ donation outcomes remains unknown. A prospective observational study of all adult DNDDs that received CPR and had anoxia as a cause of death from March 2013 to December 2014 was conducted across 20 organ procurement organizations (OPOs) in the United States. Main outcome measures included organs transplanted per donor (OTPD), specific organ transplantation rates, and recipient graft outcomes. One thousand ninety eight DNDDs met inclusion criteria, with 46% having received TH before determination of death. DNDDs with hypothermia before death had a similar number of OTPD (2.74 vs. 2.69, p = 0.61) and similar transplantation rates of individual organs. With regards to recipients, there was significantly less delayed graft function (DGF) in kidney grafts from donors who received TH before death (24% vs. 30%, p = 0.02). After adjusting for donor, recipient, and graft related factors, the protective effect of TH on DGF persisted (OR 0.75, 95%CI [0.56-0.995], p = 0.046). TH before death in the donor is independently associated with a 25% decrease in DGF among kidney recipients. This should be considered a protective donor selection factor in guiding the decision to accept or reject an organ for transplantation.
- Published
- 2019
- Full Text
- View/download PDF
34. The Use of Stroke Volume Variation to Guide Donor Management Is Associated With Increased Organs Transplanted per Donor.
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Bergstrom B, de la Cruz JS, Sally M, Louis S, Friedman M, Petersen F, and Malinoski D
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- Adult, Algorithms, Cardiac Output, Equipment and Supplies, Female, Humans, Male, Middle Aged, Monitoring, Physiologic instrumentation, Organ Transplantation, Prospective Studies, Tissue Donors, Vascular Resistance, Young Adult, Fluid Therapy methods, Hemodynamics, Monitoring, Physiologic methods, Stroke Volume, Thyroid Hormones therapeutic use, Tissue and Organ Harvesting methods, Vasoconstrictor Agents therapeutic use
- Abstract
Background: There is a national shortage of organs available for transplantation, and utilization rates for thoracic organs are less than 40%. In addition, the optimal method of assessing cardiovascular status during donor management is uncertain. FloTrac is a noninvasive hemodynamic technique that measures cardiac output and fluid responsiveness. Our objective was to measure the impact of using this technique to guide management on fluid balance, vasopressor usage, thyroid hormone usage, and pulmonary function. We hypothesized that FloTrac guidance will increase thoracic organs transplanted per donor (OTPD)., Methods: Data were prospectively collected on a convenience sample of 38 donors after neurologic determination of death. Organs transplanted, net fluid balance, dosage of vasopressors, dosage of thyroid hormone, and Pao
2 :Fio2 were compared between treatment and control groups., Results: The treatment group had greater thoracic OTPD (1.3 [1.0] vs 0.4 [0.6], P = .004) and overall OTPD (4.3 [1.5] vs 2.7 [1.5], P = .002). Donors in the treatment group maintained a neutral fluid balance, had more thyroid hormone used, and had an improvement in oxygenation., Conclusion: The implementation of this technology to aid providers may help ameliorate the shortage of thoracic and overall organs available for transplantation.- Published
- 2017
- Full Text
- View/download PDF
35. Deceased Organ Donor Management: Does Hospital Volume Matter?
- Author
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Patel MS, Mohebali J, Sally M, Groat T, Vagefi PA, Chang DC, and Malinoski DJ
- Subjects
- Humans, Logistic Models, Outcome Assessment, Health Care, Prospective Studies, United States, Hospitals, High-Volume, Hospitals, Low-Volume, Organ Transplantation statistics & numerical data, Tissue and Organ Procurement organization & administration
- Abstract
Background: Identification of strategies to improve organ donor use remains imperative. Despite the association between hospital volume and outcomes for many common disease processes, there have been no studies that assess the impact of organ donor hospital volume on organ yield., Study Design: A prospective observational study of all deceased organ donors managed by 10 organ procurement organizations across United Network for Organ Sharing regions 4, 5, and 6 was conducted from February 2012 to June 2015. To study the impact of hospital volume on organ yield, each donor was placed into a hospital-volume quartile based on the number of donors managed by their hospital. Stepwise logistic regression was used to identify the independent effect of hospital volume on the primary outcomes measure of having ≥4 organs transplanted per donor., Results: Data from 4,427 donors across 384 hospitals were collected and hospitals were assigned quartiles based on their volume of deceased donors. Hospitals managed a mean ± SD of 3.3 ± 5.2 donors per hospital per year. After adjusting for age, ethnicity, donor type, blood type, BMI, creatinine, and organ procurement organization/donor service area, being managed in hospitals within the highest volume quartile remained a positive independent predictor of ≥4 organs transplanted per donor (odds ratio = 1.52; 95% CI 1.29 to 1.79; p < 0.001)., Conclusions: Deceased organ donor hospital volume impacts organ yield, with the highest-volume centers being 52% more likely to achieve ≥4 organs transplanted per donor. Efforts should be made to share practices from these higher-volume centers and consideration should be given to centralization of donor care., (Published by Elsevier Inc.)
- Published
- 2017
- Full Text
- View/download PDF
36. Bicarbonate and mannitol treatment for traumatic rhabdomyolysis revisited.
- Author
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Nielsen JS, Sally M, Mullins RJ, Slater M, Groat T, Gao X, de la Cruz JS, Ellis MK, Schreiber M, and Malinoski DJ
- Subjects
- Acute Kidney Injury diagnosis, Acute Kidney Injury etiology, Adult, Algorithms, Clinical Protocols, Creatine Kinase, Databases, Factual, Female, Humans, Injury Severity Score, Male, Middle Aged, Retrospective Studies, Young Adult, Acute Kidney Injury prevention & control, Bicarbonates therapeutic use, Diuretics, Osmotic therapeutic use, Mannitol therapeutic use, Rhabdomyolysis complications, Wounds and Injuries complications
- Abstract
Background: A rhabdomyolysis protocol (RP) with mannitol and bicarbonate to prevent acute renal dysfunction (ARD, creatinine >2.0 mg/dL) remains controversial., Methods: Patients with creatine kinase (CK) greater than 2,000 U/L over a 10-year period were identified. Shock, Injury Severity Score, massive transfusion, intravenous contrast exposure, and RP use were evaluated. RP was initiated for a CK greater than 10,000 U/L (first half of the study) or greater than 20,000 U/L (second half). Multivariable analyses were used to identify predictors of ARD and the independent effect of the RP., Results: Seventy-seven patients were identified, 24 (31%) developed ARD, and 4 (5%) required hemodialysis. After controlling for other risk factors, peak CK greater than 10,000 U/L (odds ratio 8.6, P = .016) and failure to implement RP (odds ratio 5.7, P = .030) were independent predictors of ARD. Among patients with CK greater than 10,000, ARD developed in 26% of patients with the RP versus 70% without it (P = .008)., Conclusion: Reduced ARD was noted with RP. A prospective controlled study is still warranted., (Published by Elsevier Inc.)
- Published
- 2017
- Full Text
- View/download PDF
37. A qualitative study of discourses on heterosexual anal sexual practice among key, and general populations in Tanzania: implications for HIV prevention.
- Author
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Wamoyi J, Mongi A, Sally M, Kakoko D, Shamba D, Geubbels E, and Kapiga S
- Subjects
- Adolescent, Adult, Female, Humans, Interviews as Topic, Male, Masculinity, Middle Aged, Qualitative Research, Risk Factors, Sex Workers, Sexual Behavior, Tanzania epidemiology, Young Adult, Condoms statistics & numerical data, HIV Infections prevention & control, Health Knowledge, Attitudes, Practice, Heterosexuality
- Abstract
Background: The risk of contracting HIV through heterosexual anal sex (HAS) is significantly higher than from vaginal intercourse. Little has been done to understand the discourses around HAS and terms people use to describe the practice in Tanzania. A better understanding of discourses on HAS would offer useful insights for measurement of the practice as well as designing appropriate interventions to minimise the risks inherent in the practice., Methods: This study employed qualitative approaches involving 24 focus group discussions and 81 in-depth interviews. The study was conducted in 4 regions of Tanzania, and included samples from the general population and among key population groups (fishermen, truck drivers, sex workers, food and recreational facilities workers). Discourse analysis was conducted with the aid of NVIVO versions 8 and 10 software., Results: Six discourses were delineated in relation to how people talked about HAS. Secrecy versus openness discourse describes the terms used when talking about HAS. "Other" discourse involved participants' perception of HAS as something practiced by others unrelated to them and outside their communities. Acceptability/trendiness discourse: young women described HAS as something trendy and increasingly gaining acceptability in their communities. Materiality discourse: describes HAS as a practice that was more profitable than vaginal sex. Masculinity discourse involved discussions on men proving their manhood by engaging in HAS especially when women initiated the practice. Masculine attitudes were also reflected in how men described the practice using a language that would be considered crude. Public health discourse: describes HAS as riskier for HIV infection than vaginal sex. The reported use of condoms was low due to the perceptions that condoms were unsuitable for anal sex, but also perceptions among some participants that anal sex was safer than vaginal sex., Conclusion: Discourses among young women and adult men across the study populations were supportive of HAS. These findings provide useful insights in understanding how different population groups talked about HAS and offer a range of terms that interventions and further research on magnitude of HAS could draw on when addressing health risks of HAS among different study populations.
- Published
- 2015
- Full Text
- View/download PDF
38. Current research on organ donor management.
- Author
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Sally M and Malinoski D
- Subjects
- Humans, Positive-Pressure Respiration, Tissue and Organ Procurement, Tissue Donors
- Abstract
A shortage of organs is available for transplantation, with 116,000 patients on the Organ Procurement and Transplantation Network/United Network for Organ Sharing wait list. Because the demand for organs outweighs the supply, considerable care must be taken to maximize the number of organs transplanted per donor and optimize the quality of recovered organs. Studies designed to determine optimal donor management therapies are limited, and this research has many challenges. Although evidenced-based guidelines for managing potential organ donors do not exist, research in this area is increasing. This article reviews the existing literature and highlights recent trials that can guide management., (Published by Elsevier Inc.)
- Published
- 2013
- Full Text
- View/download PDF
39. Multicultural issues in pediatric practice.
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Kinsman SB, Sally M, and Fox K
- Subjects
- Adolescent, Child, Female, Humans, Cultural Diversity, Delivery of Health Care, Pediatrics
- Published
- 1996
- Full Text
- View/download PDF
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