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Impedance trend curves of shock and pacing lead impedances were analyzed and correlated retrospectively with the reported time of death. The influence of cold exposure on lead impedances was tested in three other single-chamber Biotronik ICDs. Results: Of 37 patients, the cause of death was due to ventricular tachyarrhythmias in 21 patients. In 12 patients, death was not arrhythmia-related. In four patients, the cause of death could not be determined due to overwriting of the episodes at the time of death. A significant increase of shock and pacing lead impedances was observed in the postmortem days (P http://www.selleckchem.com/products/z-vad-fmk.html exposure decreased shock lead impedance but did not affect pacing lead impedance. Conclusion: Postmortem analysis of ICDs allows tracking of lead impedance changes, which correlate with the day of death. The rise in postmortem impedances http://www.selleckchem.com/products/ly2157299.html should not be interpreted as contributing to the mode of death. (PACE 2012; 35:1103�C1110) ""Abstract.? Rafferty B, J?nsson D, Kalachikov S, Demmer RT, Nowygrod R, Elkind MSV, Bush Jr H, Kozarov E. (Columbia University Medical Center, New York, NY; and Weill Cornell Medical College, New York, NY; USA) Impact of monocytic cells on recovery of uncultivable bacteria from atherosclerotic lesions. J Intern Med 2011; 270: 273�C280. Objective.? Epidemiological evidence suggests that infections may contribute to atherogenesis. However, with the exception of Chlamydophila pneumoniae, cultivable bacteria have not been recovered from atherosclerotic lesions. Therefore, we aimed at developing an approach to recover uncultivable bacteria from atherectomy tissues. Methods.? We cultured homogenates from atherectomy specimens from seven nonseptic patients undergoing surgery for arterial obstruction either alone or together with THP-1 monocyte-like cells. We performed 16S rDNA analysis, biochemical tests, random amplification of polymorphic DNA PCR analysis, quantitative polymerase chain reaction (qPCR) and immunohistofluorescence to identify the cultivated bacteria. Wilcoxon signed-rank tests were used to determine whether http://www.selleck.cn/products/BIBW2992.html THP-1 treatment yielded a higher number of isolates than did the untreated controls. Results.? We recovered more bacteria from cocultures of atherectomy specimens with THP-1 cells than atherectomy specimens cultured alone. On average, tissue homogenates incubated with THP-1 cells versus control yielded 124 vs. 22 colony-forming units, a median of 140 vs. 7, respectively (P?=?0.02). We recovered 872 isolates of limited number of species, including Propionibacterium acnes, Staphylococcus epidermidis and Streptococcus infantis and the fastidious anaerobe Porphyromonas gingivalis, and confirmed its presence in tissue using double immunofluorescence imaging. qPCR demonstrated the presence of ��3.5?��?103P.