Publications by authors named "Bartelt D"

Lower urinary tract symptoms are a common complaint for women who present with a myriad of symptoms. A thorough history and physical examination, as well as specific diagnostic testing, can help determine the underlying cause and direct the best treatment option as presented in this case study.

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The selection of the contrast agent used during fluoroscopic exams is an important clinical decision. The purpose of this article is to document the usage of a nonionic, water-soluble contrast (iohexol) and barium contrast in adult patients undergoing fluoroscopic exams of the pharynx and/or esophagus and provide clinical indications for the use of each. For 1 year, data were collected on the use of iohexol and barium during fluoroscopic exams.

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Mechanical ventilation with hyperoxia is a necessary treatment for patients with respiratory distress. However, patients on mechanical ventilation have increased susceptibility to infection. Studies including ours have shown that reactive oxygen species (ROS), generated by exposure to prolonged hyperoxia, can cause a decrease in the phagocytic activity of alveolar macrophages.

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It is the responsibility of the medical Speech-Language Pathologist (SLP) who performs video-assisted fluoroscopy of swallowing (VFSS) to be aware of guidelines, recommendations, and preventive measures to reduce radiation to oneself and the patient. Established parameters to reduce radiation during videofluoroscopy include keeping the exposure time brief, using lead aprons and other shielding, and maximizing the distance from the source of radiation. The purpose of this study was to measure radiation exposure to SLPs in the clinical setting and to provide practical recommendations to keep radiation exposure as low as reasonably achievable.

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Fibrous dysplasia (FD) accounts for 7% of benign bone tumors. It is a developmental disorder of unclear etiology. The lamellar cancellous bone of the medullary cavity is replaced with immature fibroosseous tissue.

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Forms of war.

Eur J Radiol

August 2007

Purpose: Under war conditions, employed weapons can be identified on radiographs obtained in X-ray diagnostic. The analysis of such X-ray films allows concluding that there are additional information about the conditions of transport and treatment; it shall be shown that there are X-ray findings which are typical and characteristic for certain forms of warfare.

Material And Method: The radiograms have been collected during thirty years; they come from hospitals, where war casualties had been treated, and personal collections.

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We examined capacitative calcium entry (CCE) in Jurkat and in L6 skeletal muscle cells. We found that extracellular Ca2+ can enter the endoplasmic reticulum (ER) of both cell types even in the presence of thapsigargin, which blocks entry into the ER from the cytosol through the CaATPase. Moreover, extracellular Ca2+ entry into the ER was evident even when intracellular flow of Ca2+ was in the direction of ER to cytosol due to the presence of caffeine.

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The effects of oxidative stress on levels of calcium ion (Ca(2+)) in Aspergillus nidulans were measured using strains expressing aequorin in the cytoplasm (Aeq(cyt)) and mitochondria (Aeq(mt)). When oxidative stress was induced by exposure to 10-mM H(2)O(2), the mitochondrial calcium response (Ca(mt)(2+)) was greater than the change in cytoplasmic calcium (Ca(c)(2+)). The Ca(mt)(2+) response to H(2)O(2) was dose dependent, while the increase in [Ca(c)(2+)] did not change with increasing H(2)O(2).

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Flavopiridol, the first inhibitor of cyclin-dependent kinases to enter clinical trials, has shown promising antineoplastic activity and is currently undergoing Phase II testing. Little is known about mechanisms of resistance to this agent. In the present study, we have characterized an ovarian carcinoma cell line [OV202 high passage (hp)] that spontaneously developed drug resistance upon prolonged passage in tissue culture.

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The present study was designed to explore the relative efficacy of three types of service delivery intervention models for homeless men with alcohol and/or drug problems: integrated comprehensive residential services provided at one site (Group 1); on-site shelter-based intensive case management with referrals to a community network of services (Group 2); and usual care shelter services with case management (Group 3). In addition to assessing the relative efficacy of these approaches in terms of drug and alcohol use, residential stability, economic and employment status, the project also sought to examine what personal factors best predicted successful outcomes for clients. Clients were assessed at baseline and approximately six months following discharge.

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We performed cytogenetic studies of 36 human epithelial ovarian carcinomas using in situ culture and robotic harvest. We obtained analyzable metaphases of all 36 tumors (100%). One or more chromosomally abnormal clones were observed in 80% of tumors.

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Renal oncocytomas are benign tumors whose morphologic features may sometimes be confused with those of certain low-grade malignant neoplasms of the kidney, e.g., chromophobe cell and granular cell variants of renal carcinoma.

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A partial cDNA encoding Aspergillus nidulans calmodulin-dependent multifunctional protein kinase (ACMPK) was isolated from a lambda ZAP expression library by immunoselection using monospecific polyclonal antibodies to the enzyme. The sequence of both strands of the cDNA (CMKa) was determined. The deduced amino acid (aa) sequence contained all eleven consensus domains found in serine/threonine protein kinases [Hanks et al.

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Cytogenetic studies have shown frequent clonal abnormalities in papillary carcinoma (PTC) and follicular carcinoma (FTC). Loss of heterozygosity (LOH) may suggest the presence of tumor suppressor genes and has not been reported in these neoplasms. These studies were undertaken to determine if consistent chromosomal abnormalities are associated with thyroid cancer, to determine likely regions for molecular genetic investigations, and to determine if there is allelic loss in thyroid tumors.

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Cytogenetic analyses were performed on six follicular thyroid adenomas. Five had normal karyotypes and one, an oxyphil adenoma, had a t(8;14)(q13;q24.1).

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This paper is a reassessment of an old method improved by well-directed application of well-known maneuvers of laryngo-pharyngeal function. Although not as visually attractive as a dedicated laryngogram (now hardly ever requested), it does render similarly reliable diagnostic information, which, supported, as occasionally necessary, by conventional tomography, can even surpass that given by the older technique. Its main advantage lies in providing cheap, quick, noninvasive studies with minimal discomfort for the patient.

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Pulmonary embolism usually is due to natural causes, most often to obstruction of pulmonary arteries by blood clots breaking loose from venous thrombi forming in the leg or pelvis. Clots of other cellular material such as tumor fragments or fatty tissue (this especially in case of severe soft tissue and skeletal trauma), but also foreign material can give rise to this- often times lethal-condition. This is a report of foreign-body pulmonary embolism with obstruction of mainly the right lower lobe pulmonary arteries due to white vaseline embolism, probably responsible for the patient's premature surmise.

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A Ca2+/calmodulin (CaM)-dependent multifunctional protein kinase has been isolated from Aspergillus nidulans and purified to homogeneity. Unlike any CaM-dependent multifunctional protein kinase described previously, the native enzyme from Aspergillus behaves as a monomer. The calculated molecular weight is 41,200.

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A substrate-specific calmodulin-dependent myosin light-chain kinase (MLCK) was purified 45,000-fold to near homogeneity from bovine brain in 12% yield. Bovine brain MLCK phosphorylates a serine residue in the isolated turkey gizzard myosin light chain (MLC), with a specific activity of 1.8 mumol/min per mg of enzyme.

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Calmodulin was isolated and purified to homogeneity from dog pancreas. Highly purified subcellular fractions were prepared from dog pancreas by zonal sucrose-density ultracentrifugation and assayed for their ability to bind 125I-calmodulin in vitro. Proteins contained in these fractions were also examined for binding of 125I-calmodulin after their separation by polyacrylamide-gel electrophoresis in SDS.

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Presentation of over 10 years' experience of percutaneous needle aspiration biopsy in about 200 patients, with special emphasis given to the technique and to the discussion of indications and contraindications, as well as of common problems.

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This is an analysis of the workload in the imaging department (number of exams and room time) from 1978-1982. The different changes are listed and explained. During the 4 years there has been a significant increase in Ultrasound, CT, and special procedures (invasive/interventional), whereas in conventional radiology the workload decreased.

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