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1.
Burch S Bogaards A Siewerdsen J Moseley D Yee A Finkelstein J Weersink R Wilson BC Bisland SK 《Journal of biomedical optics》2005,10(3):034011
This study represents the first reported use of photodynamic therapy (PDT) for metastatic bone lesions and specifically, as a treatment for spinal metastases. A model of bone metastasis in rat confirmed the efficacy of benzoporphyrin derivative-monoacid-mediated PDT for treating lesions within the spine and appendicular bone. Fluorimetry confirmed the selective accumulation of drug into the tumor(s) at 3 h post-injection. 48 h post-light delivery into the vertebral body of the rat spine loss of bioluminescent signal and histological analyses of sectioned spine confirmed MT-1 tumor cell kill in vivo as previously confirmed in vitro using an established cell viability assay. Porcine vertebrae provided a model comparable to that of human for light propagation and PDT response. Histological examination of vertebrae 48 h post-PDT revealed a necrotic radius of 0.6 cm with an average fluence rate of 4.3 mW/cm2. Non-necrotic tissue damage was evident up to 2 cm out from the treatment fiber. Results support the application of PDT to the treatment of primary or metastatic lesions within bone. 相似文献
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Colette S. van Doorn Diederick W. De Boo Els J. M. Weersink Otto M. van Delden Jim A. Reekers Krijn P. van Lienden 《Cardiovascular and interventional radiology》2013,36(6):1686-1689
A 35-year-old female with a known medical history of cystic fibrosis was admitted to our institution for massive hemoptysis. CTA depicted a hypertrophied bronchial artery to the right upper lobe and showed signs of recent bleeding at that location. Bronchial artery embolization (BAE) was performed with gelfoam slurry, because pronounced shunting to the pulmonary artery was present. Immediately after BAE, the patient developed bilateral cortical blindness. Control angiography showed an initially not opacified anastomosis between the embolized bronchial artery and the right subclavian artery, near to the origin of the right vertebral artery. Cessation of outflow in the bronchial circulation reversed the flow through the anastomosis and allowed for spill of embolization material into the posterior circulation. Unfortunately the cortical blindness presented was permanent. 相似文献
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Mascini EM Gigengack-Baars AC Hené RJ Kamp-Hopmans TE Weersink AJ Bonten MJ 《Nederlands tijdschrift voor geneeskunde》2000,144(53):2572-2576
After a report of a possible relationship between an outbreak of vancomycin-resistant enterococci (VRE) in a nearby hospital and earlier admission of two of the patients with this VRE in the University Medical Centre of Utrecht (UMCU), the Netherlands, an extensive search for VRE carriers was started in the UMCU. In the study period of two months, VRE carriership was diagnosed in 51 patients in nine of the 11 wards investigated. Twenty-six patients in eight wards were colonized with the same VRE genotype as in the nearby hospital; spread was demonstrated in three wards. In addition, six patients of one ward were colonized with a second genotype and seven other patients with a third genotype, while 12 patients were carriers of a unique genotype. Most carriers were found in the internal medicine/nephrology and dialysis ward. Far-reaching measures (such as cohort nursing, admission stops, use of gowns and gloves, disinfection and restriction of use of vancomycin) taken in the four wards where spread was demonstrated, appeared effective but in three wards, spread was again demonstrated later. Frequent readmissions and transfers of patients appear to play an important part in this matter. None of the 51 colonized patients developed a serious VRE infection. 相似文献
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Arends JE Stemerding AM Vorst SP de Neeling AJ Weersink AJ 《Journal of clinical microbiology》2011,49(12):4364-4365
Among Nocardia species causing infections, Nocardia veterana is rarely isolated and is mostly described as causing pulmonary infections. This is the first presentation of a case of brain abscess attributable to an N. veterana infection in a patient with type 2 diabetes. Prolonged antibiotic therapy with trimethoprim-sulfamethoxazole led to successful clinical recovery. 相似文献
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