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3.
Bioethics Forum ; 17(2): 12-8, 2001.
Article in English | MEDLINE | ID: mdl-12166429

ABSTRACT

Medical mistakes is an issue that challenges many healthcare providers and organizations. The challenges are professional, personal, systemswide, financial, and morally compelling; and a fully fitting response may depend on the answer to questions that H. Richard Niebuhr used to divide all ethical considerations: what is going on here; and what is the fitting response. Heartland Regional Medical Center in St. Joseph, Missouri, asked these questions about medication errors. The response model they developed, although it is very much a work in progress, shows how a facility can go from an ethical analysis to fixing the problem.


Subject(s)
Hospital Administration , Medication Errors/prevention & control , Disclosure , Humans , Safety Management
5.
Transfusion ; 39(10): 1051-9, 1999 Oct.
Article in English | MEDLINE | ID: mdl-10532597

ABSTRACT

BACKGROUND: A new blood typing technology based on ultraviolet (UV) and visible light spectroscopy (UV/visible spectroscopy) has been developed. Blood groups and types are determined by quantifying reproducible changes in the UV and visible light spectra of blood in the presence of agglutinating antibodies. STUDY DESIGN AND METHODS: Samples of red cells in the presence and absence of agglutinating antibodies were examined by UV/visible spectroscopy. Blood groups and types were determined by comparing the optical density spectra obtained between 665 and 1000 nm. These comparisons generate numbers (agglutination index) ranging from 0 to 100, with smaller numbers corresponding to lack of agglutination and larger numbers corresponding to agglutination. RESULTS: The optical density of agglutinated blood is dramatically different from that of unagglutinated blood. The agglutination index derived from the relative slopes of the spectra is an objective indicator of agglutination strength. An agglutination index greater than 17 consistently and accurately established blood group- and type-specific agglutination. CONCLUSION: The method accurately predicted A, B, and O blood groups, and D type in over 275 samples. Scattering theory-based calculations of relative volumes of red cells before and after agglutination show a direct correlation with the agglutination index and provide the theoretical basis of the analysis. This quantitative technique is reproducible and has the potential for automation.


Subject(s)
Blood Grouping and Crossmatching/methods , Hemagglutination Tests , Spectrophotometry , Ultraviolet Rays , Hemagglutination , Humans , Models, Biological , Reproducibility of Results , Scattering, Radiation , Sensitivity and Specificity
6.
Biol Psychiatry ; 46(4): 498-505, 1999 Aug 15.
Article in English | MEDLINE | ID: mdl-10459399

ABSTRACT

BACKGROUND: Rapid and transient depletion of tryptophan (TRP) causes a brief depressive relapse in most patients successfully treated with and taking selective serotonin reuptake inhibitors, but little change in drug-free, symptomatic depressed patients. This study investigates the effects of TRP depletion in drug-free subjects in clinical remission from a prior major depressive episode (MDE). METHODS: Twelve subjects with a prior MDE, currently in clinical remission and drug-free for at least 3 months (patients), and 12 healthy subjects without personal or family history of Axis I disorder (controls), received TRP depletion. The study was conducted in a double-blind, controlled [full (102-g) and quarter-strength (25 g) 15-amino acid drinks], crossover fashion. Behavioral ratings and plasma TRP levels were obtained prior to, during, and after testing. RESULTS: All subjects experienced significant depletion of plasma TRP on both test-drinks, showing a significant dose-response relation. Healthy control subjects had minimal mood changes, but patients had a depressive response of greater magnitude. CONCLUSIONS: In the context of prior TRP depletion studies with antidepressant-treated, and drug-free symptomatic depressed patients, these results suggest that depression may be caused not by an abnormality of 5-HT function, but by dysfunction of other systems or brain regions modulated by 5-HT.


Subject(s)
Depression/blood , Genetic Predisposition to Disease , Serotonin/blood , Tryptophan/deficiency , Adult , Aged , Biomarkers , Cross-Over Studies , Double-Blind Method , Female , Humans , Male , Mood Disorders/blood , Psychiatric Status Rating Scales , Recurrence , Sex Characteristics
9.
Bioethics Forum ; 15(4): 19-24, 1999.
Article in English | MEDLINE | ID: mdl-15675059

ABSTRACT

Midwest Bioethics Center believes that encouraging palliative care training in the school milieu is one of the keys to achieving lasting improvement in end-of-life care. Therefore, a cooperative venture to increase palliative care education in medical schools was among the first strategies envisioned in the Center's PATHWAYS initiative. Its implementation, no less than its goal, requires both time and effort.


Subject(s)
Curriculum , Palliative Care , Schools, Medical , Terminal Care , Curriculum/standards , Education, Medical/standards , Humans , Interinstitutional Relations , Kansas , Schools, Medical/organization & administration
13.
J Relig Health ; 32(3): 217-22, 1993 Sep.
Article in English | MEDLINE | ID: mdl-24271497

ABSTRACT

The dialogue between medicine and religion has been expected to intensify. To test the degree of interaction empirically, the contents of four clinical medical journals for the years 1981 to 1991 were examined for reference to religious themes. Religion was important in 13 of 17,345 articles. Reasons proposed for this relative neglect are hostility, lack of interest, inadequate empirical studies, and the substitution of ethics and humanities as surrogates for religion. Scholars of religion are encouraged to submit relevant material to medical journals.

14.
J Cell Biol ; 114(6): 1285-94, 1991 Sep.
Article in English | MEDLINE | ID: mdl-1654338

ABSTRACT

Human umbilical vein endothelial (HUVE) cells have been previously reported to express the genes for the A and B chains of PDGF and to secrete PDGF-related factors into culture media. Antihuman PDGF IgG affinity chromatography was used to purify PDGF-related activity from HUVE cell-conditioned media. Immunoblot analysis of the affinity-purified proteins with anti-PDGF IgG and antibodies specific for the A or B chain peptides of PDGF combined with chemotactic and mitogenic assays revealed that the major PDGF immunorelated molecule secreted by HUVE cells is a monomer of approximately 36-38 kD and that less than 10% of the purified biologically active molecules are PDGF A or B chain peptides. Screening of an HUVE cell cDNA library in the expression vector lambda gtl 1 with the anti-PDGF antibody resulted in the cloning and sequencing of a cDNA with an open reading frame encoding a 38-kD cysteine-rich secreted protein which we show to be the major PDGF-related mitogen secreted by human vascular endothelial cells. The protein has a 45% overall homology to the translation product of the v-src-induced CEF-10 mRNA from chick embryo fibroblasts. We have termed this new mitogen connective tissue growth factor.


Subject(s)
Endothelium, Vascular/physiology , Genes, src , Growth Substances/genetics , Immediate-Early Proteins , Intercellular Signaling Peptides and Proteins , Platelet-Derived Growth Factor/genetics , RNA, Messenger/genetics , Amino Acid Sequence , Animals , Base Sequence , Binding, Competitive , Biological Assay , Cell Line , Cloning, Molecular , Connective Tissue Growth Factor , Culture Media , Endothelium, Vascular/metabolism , Gene Library , Growth Substances/isolation & purification , Growth Substances/metabolism , Humans , Kinetics , Macromolecular Substances , Mice , Molecular Sequence Data , Platelet-Derived Growth Factor/isolation & purification , Platelet-Derived Growth Factor/metabolism , Protein Biosynthesis , Receptors, Cell Surface/metabolism , Receptors, Platelet-Derived Growth Factor , Recombinant Proteins/isolation & purification , Recombinant Proteins/metabolism , Restriction Mapping , Transcription, Genetic , Umbilical Veins
15.
Biochim Biophys Acta ; 1041(3): 296-304, 1990 Dec 05.
Article in English | MEDLINE | ID: mdl-2176546

ABSTRACT

We have identified and partially purified a soluble nucleoside diphosphate kinase (NDP kinase) from Xenopus laevis oocytes. The enzyme preparation can catalyze the transfer of phosphate from ATP to all of the major oxy- and deoxynucleotides. It can also catalyze the transfer of a phosphorothioate group from gamma-S-ATP to an acceptor GDP forming gamma-S-GTP. Like NDP kinases from other sources, the catalytic mechanism appears to involve a phosphoenzyme intermediate which can be isolated. Transfer of phosphate from nucleoside triphosphates to protein is rapid, reaching saturation within 1 min following the addition of nucleoside triphosphates. The transfer of phosphate from phosphoprotein intermediate to nucleoside diphosphates is equally fast. While nucleoside diphosphate kinases are generally thought to require magnesium for activity, both the oocyte enzyme preparation and a commercial bovine liver enzyme preparation are only partially inhibited by short (10 min) exposures to 25 mM EDTA. Both enzyme preparations are, however, further inhibited by long incubations with this metal chelator (2 h, 70% inhibition). Zinc enhances the inhibition of NDP kinase by EDTA, but is ineffective on its own. Rapid phosphorylation in the presence of [gamma-32P]ATP and EDTA could be used to identify the phosphoenzyme intermediate in homogenates of Xenopus oocytes and facilitated its isolation. Sodium dodecyl sulfate polyacrylamide gel electrophoresis coupled with autoradiography indicated the presence of only a single phosphorylated species of Mr 21,500 in supernatants of fresh oocyte homogenates. Partial purification of this protein utilizing salt precipitation, hydrophobic-interaction chromatography and an affinity step with Affi-Gel Blue Sepharose resulted in a 100-fold purification and a 29% overall yield of NDP-kinase activity. Size-exclusion chromatography of the purified preparation yielded two peaks containing enzyme activity. They eluted with apparent molecular weights of 45,000 and 70,000, suggesting a native enzyme that is multimeric or associated with other proteins.


Subject(s)
Nucleoside-Diphosphate Kinase/metabolism , Oocytes/enzymology , Adenosine Triphosphate/metabolism , Animals , Edetic Acid/pharmacology , Electrophoresis, Polyacrylamide Gel , Female , Guanosine Triphosphate/metabolism , Kinetics , Magnesium/pharmacology , Nucleoside-Diphosphate Kinase/isolation & purification , Xenopus laevis , Zinc/pharmacology
16.
JAMA ; 263(10): 1427-30, 1990 Mar 09.
Article in English | MEDLINE | ID: mdl-2078202

ABSTRACT

The peer review process serves a vital role in the publication of biomedical information. When properly functioning, review should focus exclusively on questions of scientific validity and should avoid becoming enmeshed in questions such as "authorization" and "data ownership." We present a case in which the dissenting views of a coinvestigator were suppressed because the principal investigator and grantee institution informed a medical journal that the coinvestigator was not "authorized" to use the data generated by a publicly funded grant and because the editor of a scholarly journal refused to review the dissenting manuscript and to submit that dissent to external reviewers for peer review. The current peer review system, as shown by this case, is unable to embrace dissent within the peer review process and to use dissent to serve scientific truth and the public interest.


KIE: The authors present a case involving the University of Pittsburgh School of Medicine in which the dissenting views of one of the authors, Cantekin, a coinvestigator for a National Institutes of Health funded trial, were surpressed from publication. The principle investigator and the grantee institution claimed that the coinvestigator was not authorized to use data from the publicly funded grant, and the editor of a scholarly journal refused to review the dissenting manuscript or submit it for external peer review. At the time this article was submitted, the case had attracted the attention of the media and of the U.S. Congress. It raises the issues of ownership of data from publicly financed research and of the failure of the current peer review process to deal with dissent in scientific publication.


Subject(s)
Biomedical Research , Dissent and Disputes , Editorial Policies , Group Processes , Information Dissemination , Peer Review/standards , Public Health , Publishing , Scientific Misconduct , Federal Government , National Institutes of Health (U.S.) , Otitis Media , Philadelphia , Research Support as Topic , United States
17.
Am J Psychiatry ; 146(3): 353-6, 1989 Mar.
Article in English | MEDLINE | ID: mdl-2537582

ABSTRACT

All effective pharmacologic agents used to treat panic disorder augment gamma-aminobutyric acid (GABA) transmission. Anxiolytics and antidepressants that lack GABA activity are not effective in panic disorder. To test the hypothesis that GABA activity is a component of antipanic drug efficacy, the authors treated nine medication-free panic disorder subjects with oral baclofen (30 mg/day for 4 weeks) in a double-blind, placebo-controlled crossover trial. Baclofen, a selective GABA agonist, was significantly more effective than placebo in reducing the number of panic attacks and scores on the Hamilton anxiety scale, Zung scale, and Katz-R nervousness subscale. The authors discuss possible mechanisms of antipanic drug efficacy.


Subject(s)
Anxiety Disorders/drug therapy , Baclofen/therapeutic use , Fear , Panic , gamma-Aminobutyric Acid/physiology , Anxiety Disorders/physiopathology , Anxiety Disorders/psychology , Baclofen/pharmacology , Clinical Trials as Topic , Double-Blind Method , Humans , Personality Inventory , Placebos , Psychiatric Status Rating Scales , Receptors, GABA-A/drug effects
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