134 research outputs found
A Neutral Mutation Changes the Ionic Strength Dependence of the Rate of Electron Transfer between Cyt c2 and RCs from Rb. sphaeroides
How Much is Post-Acute Care Use Affected by Its Availability?
To assess the relative impact of clinical factors versus non-clinical factors such as post acute care (PAC) supply - in determining whether patients receive care from skilled nursing facilities (SNFs) or inpatient rehabilitation facilities (IRFs) after discharge from acute care. Medicare acute hospital, IRF and SNF claims provided data on PAC choices; predictors of site of PAC chosen were generated from Medicare claims, provider of services, enrollment file, and Area Resource File data. We used multinomial logit models to predict post-acute care use by elderly patients after hospitalizations for stroke, hip fractures, or lower extremity joint replacements. A file was constructed linking Medicare acute and post-acute utilization data for all sample patients hospitalized in 1999. PAC availability is a more powerful predictor of PAC use than the clinical characteristics in many of our models. The effects of distance to providers and supply of providers are particularly clear in the choice between IRF and SNF care. The farther away the nearest IRF is, and the closer the nearest SNF is, the less likely a patient is to go to an IRF. Similarly, the fewer IRFs, and the more SNFs, there are in the patient's area the less likely the patient is to go to an IRF. In addition, if the hospital from which the patient is discharged has a related IRF or a related SNF the patient is more likely to go there. We find that the availability of PAC is a major determinant of whether patients use such care and which type of PAC facility they use. Further research is needed in order to evaluate whether these findings indicate that a greater supply of PAC leads to both higher use of institutional care and better outcomes or whether it leads to unwarranted expenditures of resources and delays in returning patients to their homes.
Investigations into ecological and sociological determinants of land-use decisions: a study of inland lake watersheds in northern Michigan
reprinted June l978; Bibliography: p. 251-259.http://deepblue.lib.umich.edu/bitstream/2027.42/49266/2/2194424.0001.001.pd
Chief medical officers\u27 perceptions of disease management programs
The purpose of this article is to examine chief medical officers\u27 (CMOs) perception of disease management programs. Five open-ended questions, each addressing a major issue in the development of disease management programs, were given to 31 CMOs who attended a series of invitation-only conferences on disease management in the fall of 1999. Qualitative data analysis was conducted using the transcripts on each of the issues. Overall, the CMOs viewed the emergence of capitated disease management programs positively. They considered the population of a program to be the contractual patients and/or those at risk for the target disease. On the issue of quality and cost, they preferred an optimal balance between the two. They saw the Internet as an opportunity for the education of patients as well as providers. However, they were concerned about patient confidentiality and further widening of the gap between those who have the financial means to access healthcare and those who do not. In spite of concerns expressed about the current generation of disease management programs, the CMOs held an optimistic view of the future of these programs. To become better accepted, disease management programs must address the issues of confidentiality and quality of care
Aircraft Configured for Flight in an Atmosphere Having Low Density
An aircraft is configured for flight in an atmosphere having a low density. The aircraft includes a fuselage, a pair of wings, and a rear stabilizer. The pair of wings extends from the fuselage in opposition to one another. The rear stabilizer extends from the fuselage in spaced relationship to the pair of wings. The fuselage, the wings, and the rear stabilizer each present an upper surface opposing a lower surface. The upper and lower surfaces have X, Y, and Z coordinates that are configured for flight in an atmosphere having low density
Blastomycosis in Man after Kinkajou Bite
We report transmission of Blastomyces dermatitidis fungal infection from a pet kinkajou to a man. When treating a patient with a recalcitrant infection and a history of an animal bite, early and complete animal necropsy and consideration of nonbacterial etiologies are needed
A Mouse-Adapted SARS-Coronavirus Causes Disease and Mortality in BALB/c Mice
No single animal model for severe acute respiratory syndrome (SARS) reproduces all aspects of the human disease. Young inbred mice support SARS-coronavirus (SARS-CoV) replication in the respiratory tract and are available in sufficient numbers for statistical evaluation. They are relatively inexpensive and easily accessible, but their use in SARS research is limited because they do not develop illness following infection. Older (12- to 14-mo-old) BALB/c mice develop clinical illness and pneumonitis, but they can be hard to procure, and immune senescence complicates pathogenesis studies. We adapted the SARS-CoV (Urbani strain) by serial passage in the respiratory tract of young BALB/c mice. Fifteen passages resulted in a virus (MA15) that is lethal for mice following intranasal inoculation. Lethality is preceded by rapid and high titer viral replication in lungs, viremia, and dissemination of virus to extrapulmonary sites accompanied by lymphopenia, neutrophilia, and pathological changes in the lungs. Abundant viral antigen is extensively distributed in bronchial epithelial cells and alveolar pneumocytes, and necrotic cellular debris is present in airways and alveoli, with only mild and focal pneumonitis. These observations suggest that mice infected with MA15 die from an overwhelming viral infection with extensive, virally mediated destruction of pneumocytes and ciliated epithelial cells. The MA15 virus has six coding mutations associated with adaptation and increased virulence; when introduced into a recombinant SARS-CoV, these mutations result in a highly virulent and lethal virus (rMA15), duplicating the phenotype of the biologically derived MA15 virus. Intranasal inoculation with MA15 reproduces many aspects of disease seen in severe human cases of SARS. The availability of the MA15 virus will enhance the use of the mouse model for SARS because infection with MA15 causes morbidity, mortality, and pulmonary pathology. This virus will be of value as a stringent challenge in evaluation of the efficacy of vaccines and antivirals
Optimizing Egg Recovery From Wild Northern Corn Rootworm Beetles (Coleoptera: Chrysomelidae)
The northern corn rootworm, Diabrotica barberi Smith & Lawrence (Coleoptera: Chrysomelidae), is one of the most important insect pests in the U.S. Corn Belt. Efforts to obtain eggs from wild northern corn rootworm populations using techniques developed for other rootworm species have been unsuccessful due to lack of oviposition. In 2016, we evaluated four oviposition media in choice tests within each of three female densities in 30.5 × 30.5 × 30.5 cm BugDorm cages. The number of eggs laid per female was significantly affected by female density and the interaction of female density × oviposition media, but oviposition was relatively poor in all oviposition media (1.2 eggs per female when averaging the three female densities and all oviposition media). Single females were also evaluated in nonchoice assays in 6 cm × 6 cm × 8 cm clear plastic boxes and averaged up to 108 eggs per female depending on the oviposition media. In 2017, the cumulative number of eggs laid per female in boxes with one female was not significantly different from the number of eggs laid per female in boxes with 3 females. In 2018, the cumulative number of eggs laid per female was not significantly different between female densities of 1, 3, 5, or 10 females per box. Total egg production per box therefore increased as female density increased. More than 27,000 wild northern corn rootworm eggs were collected from just 190 females when collected relatively early in the field season. We now have an efficient and robust system for obtaining eggs from wild northern corn rootworm females
NAF-1 and mitoNEET are central to human breast cancer proliferation by maintaining mitochondrial homeostasis and promoting tumor growth
Mitochondria are emerging as important players in the transformation
process of cells, maintaining the biosynthetic and energetic
capacities of cancer cells and serving as one of the primary sites of
apoptosis and autophagy regulation. Although several avenues of
cancer therapy have focused on mitochondria, progress in developing
mitochondria-targeting anticancer drugs nonetheless has
been slow, owing to the limited number of known mitochondrial
target proteins that link metabolism with autophagy or cell death.
Recent studies have demonstrated that two members of the newly
discovered family of NEET proteins, NAF-1 (CISD2) and mitoNEET
(mNT; CISD1), could play such a role in cancer cells. NAF-1 was
shown to be a key player in regulating autophagy, and mNT
was proposed to mediate iron and reactive oxygen homeostasis
in mitochondria. Here we show that the protein levels of NAF-1
and mNT are elevated in human epithelial breast cancer cells, and
that suppressing the level of these proteins using shRNA results in
significantly reduced cell proliferation and tumor growth, decreased
mitochondrial performance, uncontrolled accumulation
of iron and reactive oxygen in mitochondria, and activation of
autophagy. Our findings highlight NEET proteins as promising mitochondrial
targets for cancer therapy
Myocarditis Outbreak among Adults, Illinois, 2003
An outbreak of myocarditis occurred among adults in Illinois in 2003. Diagnostic testing of myocardial tissues from 3 patients and comprehensive tests for enterovirus and adenovirus of other specimens from patients were inconclusive. Appropriate specimen collection from patients with idiopathic cardiomyopathy and further enhancement of diagnostic techniques are needed
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