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Xu J, He B, Carver K, Vanheyningen D, Parkin B, Garmire LX, Olszewski MA, Deng JC. Heterogeneity of neutrophils and inflammatory responses in patients with COVID-19 and healthy controls. Front Immunol 2022; 13:970287. [PMID: 36466858 PMCID: PMC9709423 DOI: 10.3389/fimmu.2022.970287] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022] Open
Abstract
Severe respiratory viral infections, including SARS-CoV-2, have resulted in high mortality rates despite corticosteroids and other immunomodulatory therapies. Despite recognition of the pathogenic role of neutrophils, in-depth analyses of this cell population have been limited, due to technical challenges of working with neutrophils. We undertook an unbiased, detailed analysis of neutrophil responses in adult patients with COVID-19 and healthy controls, to determine whether distinct neutrophil phenotypes could be identified during infections compared to the healthy state. Single-cell RNA sequencing analysis of peripheral blood neutrophils from hospitalized patients with mild or severe COVID-19 disease and healthy controls revealed distinct mature neutrophil subpopulations, with relative proportions linked to disease severity. Disruption of predicted cell-cell interactions, activated oxidative phosphorylation genes, and downregulated antiviral and host defense pathway genes were observed in neutrophils obtained during severe compared to mild infections. Our findings suggest that during severe infections, there is a loss of normal regulatory neutrophil phenotypes seen in healthy subjects, coupled with the dropout of appropriate cellular interactions. Given that neutrophils are the most abundant circulating leukocytes with highly pathogenic potential, current immunotherapies for severe infections may be optimized by determining whether they aid in restoring an appropriate balance of neutrophil subpopulations.
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Affiliation(s)
- Jintao Xu
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Bing He
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, United States
| | - Kyle Carver
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Debora Vanheyningen
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Brian Parkin
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, MI, United States
| | - Lana X. Garmire
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, United States,*Correspondence: Lana X. Garmire, ; Michal A. Olszewski, ; Jane C. Deng,
| | - Michal A. Olszewski
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States,*Correspondence: Lana X. Garmire, ; Michal A. Olszewski, ; Jane C. Deng,
| | - Jane C. Deng
- Research Service, LTC Charles S. Kettles Veterans Affairs Medical Center, Department of Veterans Affairs Health System, Ann Arbor, MI, United States,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, United States,*Correspondence: Lana X. Garmire, ; Michal A. Olszewski, ; Jane C. Deng,
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Yu JS, Rink T, Yu SM, Liu K, Carver K, Lather JD, Payne J, Rogers A, Erdal BS. The broken circle method: a novel technique that enhances detection of Hill-Sachs lesions on internal rotation shoulder radiographs. Clin Radiol 2020; 76:158.e1-158.e12. [PMID: 33008621 DOI: 10.1016/j.crad.2020.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 09/02/2020] [Indexed: 11/18/2022]
Abstract
AIM To describe and test a new method that increases the conspicuity of a Hill-Sachs lesion on internal rotation (IR) radiographs. MATERIALS AND METHODS This study had institutional review board approval. A retrospective search for patients with a prior shoulder dislocation and a Hill-Sachs lesion documented on magnetic resonance imaging (MRI) was performed over a 10-year period identifying 256 test patients. In Part 1, the IR radiographs from test cases were randomised with controls, and three readers scored them independently for the defect. The readers were then taught the Broken Circle (BC) method and re-scored the radiographs. In Part 2, 15 cases of Hill-Sachs lesions that were missed by all readers in Part 1 were randomised with controls, and were shown to 25 radiology residents before (pre-test) and after (post-test) learning the BC method. A paired t-test was used to compare the differences in sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV). RESULTS In Part 1, the sensitivity increased 19.7% (54.1%-73.8%; p<0.05) and NPV increased 10.8% (62.5%-73.3%; p<0.01). In Part 2, post-test sensitivity for residents increased 16.3% (55.2%-71.5%; p<0.0001), accuracy increased 13.4% (64%-77.4%; p<0.0001), and NPV increased 13.3% (40.8%-54.1%; p<0.0001) independent of the level of training. The change in accuracy was also statistically significant for every individual class. CONCLUSION The BC method was an effective technique that facilitated detection of a Hill-Sachs lesion at all levels of training, and was useful as a teaching tool.
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Affiliation(s)
- J S Yu
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA.
| | - T Rink
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - S M Yu
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - K Liu
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - K Carver
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - J D Lather
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - J Payne
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - A Rogers
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
| | - B S Erdal
- Department of Radiology, The Ohio State University Wexner Medical Center, 452 Doan Tower, 395 West 12th Avenue, Columbus, OH 43210, USA
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Carver K, Kim R, Edwards S. Perioperative Characteristics of Adolescent Patients Undergoing Free Tissue Transfer in the Reconstruction of Craniomaxillofacial Defects. J Oral Maxillofac Surg 2016. [DOI: 10.1016/j.joms.2016.06.031] [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: 11/24/2022]
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Abstract
Dendrimer-based gene delivery has been constrained by intrinsic toxicity and suboptimal nanostructure. Conjugation of neutral morpholino oligonucleotides (ONs) with PAMAM dendrimers resulted in neutral, uniform, and ultra-small (∼10 nm) nanoconjugates. The nanoconjugates dramatically enhanced cellular delivery of the ONs in cancer cells. After release from the dendrimer in the cytosol, the ONs produced potent functional activity without causing significant cytotoxicity. When carrying an apoptosis-promoting ON, the nanoconjugates produced cancer cell killing directly. Thus, the dendritic nanoconjugates may provide an effective tool for delivering ONs to tumors and other diseased tissues.
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Affiliation(s)
- Xin Ming
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
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Carver K, Ming X, Juliano RL. Tumor cell-targeted delivery of nanoconjugated oligonucleotides in composite spheroids. Nucleic Acid Ther 2015; 24:413-9. [PMID: 25238564 DOI: 10.1089/nat.2014.0493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Standard tissue culture has often been a poor model for predicting the efficacy of anti-cancer agents including oligonucleotides. In contrast to the simplicity of monolayer tissue cultures, a tumor mass includes tightly packed tumor cells, tortuous blood vessels, high levels of extracellular matrix, and stromal cells that support the tumor. These complexities pose a challenge for delivering therapeutic agents throughout the tumor, with many drugs limited to cells proximal to the vasculature. Multicellular tumor spheroids are superior to traditional monolayer cell culture for the assessment of cancer drug delivery, since they possess many of the characteristics of metastatic tumor foci. However, homogeneous spheroids comprised solely of tumor cells do not account for some of the key aspects of metastatic tumors, particularly the interaction with host cells such as fibroblasts. Further, homogeneous culture does not allow for the assessment of targeted delivery to tumor versus host cells. Here we have evaluated delivery of targeted and untargeted oligonucleotide nanoconjugates and of oligonucleotide polyplexes in both homogeneous and composite tumor spheroids. We find that inclusion of fibroblasts in the spheroids reduces delivery efficacy of the polyplexes. In contrast, targeted multivalent RGD-oligonucleotide nanoconjugates were able to effectively discriminate between melanoma cells and fibroblasts, thus providing tumor-selective uptake and pharmacological effects.
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Affiliation(s)
- Kyle Carver
- Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina
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Juliano RL, Ming X, Carver K, Laing B. Cellular uptake and intracellular trafficking of oligonucleotides: implications for oligonucleotide pharmacology. Nucleic Acid Ther 2014; 24:101-13. [PMID: 24383421 DOI: 10.1089/nat.2013.0463] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
One of the major constraints on the therapeutic use of oligonucleotides is inefficient delivery to their sites of action in the cytosol or nucleus. Recently it has become evident that the pathways of cellular uptake and intracellular trafficking of oligonucleotides can strongly influence their pharmacological actions. Here we provide background information on the basic processes of endocytosis and trafficking and then review recent literature on targeted delivery and subcellular trafficking of oligonucleotides in that context. A variety of approaches including molecular scale ligand-oligonucleotide conjugates, ligand-targeted nanocarriers, and the use of small molecules to enhance oligonucleotide effects are discussed.
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Affiliation(s)
- R L Juliano
- Division of Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina
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Nakagawa O, Ming X, Carver K, Juliano R. Conjugation with receptor-targeted histidine-rich peptides enhances the pharmacological effectiveness of antisense oligonucleotides. Bioconjug Chem 2013; 25:165-70. [PMID: 24354269 DOI: 10.1021/bc400500h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Ineffective delivery to intracellular sites of action is one of the key limitations to the use of antisense and siRNA oligonucleotides as therapeutic agents. Here, we describe molecular scale antisense oligonucleotide conjugates that bind selectively to a cell surface receptor, are internalized, and then partially escape from nonproductive endosomal locations to reach their sites of action in the nucleus. Peptides that include bombesin sequences for receptor targeting and a run of histidine residues for endosomal disruption were covalently linked to a splice switching antisense oligonucleotide. The conjugates were tested for their ability to correct splicing and up-regulate expression of a luciferase reporter in prostate cancer cells that express the bombesin receptor. We found that trivalent conjugates that included both the targeting sequence and several histidine residues were substantially more effective than conjugates containing only the bombesin or histidine moieties. This demonstrates the potential of creating molecular scale oligonucleotide conjugates with both targeting and endosome escape capabilities.
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Affiliation(s)
- Osamu Nakagawa
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill North Carolina 27599, United States
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Ming X, Carver K, Fisher M, Noel R, Cintrat JC, Gillet D, Barbier J, Cao C, Bauman J, Juliano RL. The small molecule Retro-1 enhances the pharmacological actions of antisense and splice switching oligonucleotides. Nucleic Acids Res 2013; 41:3673-87. [PMID: 23396438 PMCID: PMC3616695 DOI: 10.1093/nar/gkt066] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The attainment of strong pharmacological effects with oligonucleotides is hampered by inefficient access of these molecules to their sites of action in the cytosol or nucleus. Attempts to address this problem with lipid or polymeric delivery systems have been only partially successful. Here, we describe a novel alternative approach involving the use of a non-toxic small molecule to enhance the pharmacological effects of oligonucleotides. The compound Retro-1 was discovered in a screen for small molecules that reduce the actions of bacterial toxins and has been shown to block the retrograde trafficking pathway. We demonstrate that Retro-1 can also substantially enhance the effectiveness of antisense and splice switching oligonucleotides in cell culture. This effect occurs at the level of intracellular trafficking or processing and is correlated with increased oligonucleotide accumulation in the nucleus but does not involve the perturbation of lysosomal compartments. We also show that Retro-1 can alter the effectiveness of splice switching oligonucleotides in the in vivo setting. These observations indicate that it is possible to enhance the pharmacological actions of oligonucleotides using non-toxic and non-lysosomotropic small molecule adjuncts.
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Affiliation(s)
- Xin Ming
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
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Juliano RL, Carver K, Cao C, Ming X. Receptors, endocytosis, and trafficking: the biological basis of targeted delivery of antisense and siRNA oligonucleotides. J Drug Target 2012; 21:27-43. [PMID: 23163768 DOI: 10.3109/1061186x.2012.740674] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The problem of targeted delivery of antisense and siRNA oligonucleotides can be resolved into two distinct aspects. The first concerns devising ligand-oligonucleotide or ligand-carrier moieties that bind with high selectivity to receptors on the cell type of interest and that are efficiently internalized by endocytosis. The second concerns releasing oligonucleotides from pharmacologically inert endomembrane compartments so that they can access RNA in the cytosol or nucleus. In this review, we will address both of these aspects. Thus, we present information on three important receptor families, the integrins, the receptor tyrosine kinases, and the G protein-coupled receptors in terms of their suitability for targeted delivery of oligonucleotides. This includes discussion of receptor abundance, internalization and trafficking pathways, and the availability of suitable high affinity ligands. We also consider the process of oligonucleotide uptake and intracellular trafficking and discuss approaches to modulating these processes in a pharmacologically productive manner. Hopefully, the basic information presented in this review will be of value to investigators involved in designing delivery approaches for oligonucleotides.
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Affiliation(s)
- R L Juliano
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA.
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Kelly PH, Bondolfi L, Hunziker D, Schlecht HP, Carver K, Maguire E, Abramowski D, Wiederhold KH, Sturchler-Pierrat C, Jucker M, Bergmann R, Staufenbiel M, Sommer B. Progressive age-related impairment of cognitive behavior in APP23 transgenic mice. Neurobiol Aging 2003; 24:365-78. [PMID: 12498971 DOI: 10.1016/s0197-4580(02)00098-2] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Transgenic APP23 mice expressing human APP(751) with the K670N/M671L mutation, were compared at ages 3, 18 or 25 months to non-transgenic littermates in passive avoidance and in a small and large Morris maze. The task in the smaller pool habituated their flight response to the platform. Impairments in passive avoidance and small pool performance in APP23 mice were clearly age-related. In the larger Morris maze APP23 mice at all ages were impaired in latency and distance swum before finding the platform. Identical performance of 18-month APP23 and controls in a visible platform condition indicates that the Morris maze performance deficit was not due to sensory, motor or motivational alterations. At age 3 months both groups initially unexpectedly avoided the visible platform, suggesting that in young mice neophobia may contribute significantly to performance in cognitive tests. In conclusion, APP23 mice exhibit both early behavioral impairment in the large Morris maze as well as impairments in passive avoidance and small pool performance that are marked only in old age.
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Affiliation(s)
- P H Kelly
- NS Research, Novartis Pharma A.G. Ltd., CH-4002 Basel, Switzerland.
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Abstract
A common characterization of adolescence is that parent influence decreases and friend influence increases as adolescents age. From that, we hypothesized that the association between parent and adolescent smoking decreases and the association between friend and adolescent smoking increases as adolescents become older. The hypothesis is tested with data from The National Longitudinal Study of Adolescent Health. Adolescent smoking is measured as progressions to more frequent smoking and as continuations from prior smoking levels. There is no support for the hypothesis, a finding consistent with the earlier panel study that tested it. The age-specific findings are discussed in the context of programs designed to influence adolescent cigarette smoking and why the hypothesis that drove this study was not confirmed. Among supplementary findings reported is that adolescent smoking is more influenced by friend smoking than by parent smoking.
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Affiliation(s)
- K E Bauman
- Department of Health Behavior and Health Education, University of North Carolina at Chapel Hill, 27516, USA.
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Abstract
OBJECTIVES This study examine the impact of participation in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) and Medicaid on risk of infant death in the United States. METHODS The 1988 National Maternal and Infant Health Survey was used to consider the risk of endogenous and exogenous death among infants of women participating in WIC and Medicaid during pregnancy and the infant's first year. RESULTS Participation in the WIC program during pregnancy and infancy was associated with a reduced risk of endogenous and exogenous infant deaths (odds ratios [ORs] = 0.68 and 0.62, respectively). The risk of endogenous death among infants whose mothers participated in Medicaid during pregnancy was equal to that of the privately insured (OR = 1.04). Uninsured infants faced higher risks of endogenous death (OR = 1.42). CONCLUSIONS These results show that it is important to consider the net effect of WIC and Medicaid participation and to differentiate both the timing of program receipt and cause of death. Evidence suggests that WIC and Medicaid programs have beneficial effects for poor women and their infants.
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Affiliation(s)
- N Moss
- National Institute of Child Health and Human Development, Bethesda, Md, USA.
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Abstract
This contribution compares a currently worn hearing instrument (i.e. R-HI) with a programmable multiband full-dynamic range compression behind-the-ear HI (i.e. T-HI), based on subject preference for HI, and, in addition, compares the preference for a linear/ non-linear amplification-mode (i.e. L-mode/C-mode). Finally, it evaluates some health technology aspects related to the devices. N = 34 experienced HI-users at a median age of 72 years (range 22-84) completed the trial, n = 5 being monaurally, and n = 29 being binaurally fitted. The trial comprises an unblinded comparative study of the R-HI and T-HI, in either C-mode or L-mode amplification, and a double-blind crossover study evaluating the C-mode versus the L-mode amplification. The results of the unblinded study showed that 94% (n = 32/34) preferred the T-HI, whereas two subjects preferred their current HI. The double-blind crossover study concerning the preference for the C-mode and L-mode, respectively, in the T-HI, showed that 72% (n = 23/32) had a significant preference for the non-linear amplification, whereas 28% (n = 9/32) preferred the linear amplification. Provided that the price of the T-HI is kept unchanged, a health technology evaluation may imply an estimate of 30 mill. DKR added costs on a national basis, which should be taken into account within the national hearing services.
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Affiliation(s)
- A Parving
- Department of Audiology, Bispebjerg Hospital, H:S, Copenhagen, Denmark.
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Abstract
The 1988 National Maternal and Infant Health Survey, a stratified random sample of 9,953 live births, shows that women who work during pregnancy are more likely to be non-Hispanic white, married, of higher income and education, to have medical insurance, and of lower parity than nonemployed pregnant women (p < .0001). They begin prenatal care earlier, are less likely to smoke, and are more likely to state that the birth was wanted (p < .0001). Similar trends are seen for full-time as compared to part-time workers. Women employed as precision production workers, operators/fabricators, or in service occupations are disadvantaged with regard to sociodemographic and behavioral risks for pregnancy outcomes relative to women in professional and managerial occupations. Black race, parity, body mass index, and smoking, but not employment, are associated with low birth weight when gestational age is controlled. The effects of stress and its buffers, paternal characteristics, physical activity, and toxic exposures, both in and out of the workplace, should be considered, as should the normative and social policy context.
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Affiliation(s)
- N Moss
- Demographic and Behavioral Sciences Branch, Center for Population Research, National Institute of Child Health and Human Development, Bethesda, MD 20892
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Abstract
This paper explores the meaning of living with Acquired Immune Deficiency Syndrome (AIDS) using Parse's theory of man-living-health as the conceptual framework. The design of the study is based on the qualitative descriptive method. Analysis of the data gathered from interviews with fourteen subjects reveals the emergence of three themes related to the meaning of living with AIDS: (a) an abrupt shift in patterns of being give rise to changing priorities, (b) fluctuating possibilities arise in the uncertainty of being with and away from close others, and (c) changing hopes and dreams surface from the insights of suffering. Practice propositions were identified from the findings of the study.
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Affiliation(s)
- M R Brown
- Department of Medicine, University of California, San Diego Medical Center 92103
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