To characterize the isoenzyme distribution of creatine kinase (CK) in endothelial cells (ECs) and its functional role during substrate depletion, ECs from aorta (AECs) and microvasculature (MVECs) of pig and rat were studied. In addition, high- energy phosphates were continuously monitored by (31)P NMR spectroscopy in pig AECs attached to microcarrier beads. CK activity per milligram of protein...

In a quest to better understand hereditary human deafness we focus on the motor protein myosin VIIA (MyoVIIA), mutations in which underlie dysfunctions in auditory, vestibular and visual processes. Proposed MyoVIIA inner ear functions include tethering transduction channels, trafficking proteins and anchoring hair cell stereocilia by associating with adherens junctions. Fueled by the interest t...

Emery-Dreifuss muscular dystrophy (EDMD) is a rare X-linked muscular dystrophy. Creatine kinase (CK) activity usually is increased in serum of affected males, but results for aldolase and lactate dehydrogenase (LD) in serum have been inconsistent, as have those for CK in carrier females. There have been few studies of CK-MB or LD isoenzyme-1 (LD-1) in EDMD. We measured CK, CK-MB, LD, LD-1, and ...

AIM To study the relationship between outcomes and peak creatine kinase (CK)-MB levels after percutaneous coronary intervention (PCI) in patients with non-ST-segment elevation acute coronary syndromes (NSTE ACS). METHODS AND RESULTS Peak CK-MB ratios (peak CK-MB level/upper limit of normal [ULN]) after PCI were analysed in 6164 patients with NSTE ACS from four randomized trials who underwent ...

breast cancer is the most common cancer in women worldwide. breast cancer in one third of all patients will go on to metastasis, which is the main cause of mortality in cancer cases. tumor cells detach from primary tumor and enter into the circulation as circulating tumor cells (ctcs) which can form metastatic lesions. in this study, the expression of ck-19 gene in blood samples of metastatic b...

The aim is to evaluate the feasibility of ultra-hypofractionated (UH) SBRT with CyberKnife® (CK) radiosurgery (Accuray Inc., Sunnyvale, California, USA) for localized prostate cancer (PCa) a concomitant focal boost dominant intraprostatic lesion (DIL). Patients intermediate/high-risk PCa, at least one visible DIL on multi-parametric MRI, were included. For each, two CK-SBRT in silico plans calc...

Many recent protocols for Authenticated Key Exchange have been proven correct in the CK, CK-HMQV, or eCK security models. The exact relation between the security models, and hence between the security guarantees provided by the protocols, is unclear. We show that the CK, CK-HMQV, and eCK security models are formally incomparable for a number of reasons. Second, we show that these models are als...

Three surveys of the measurement and interpretation of creatine kinase (CK; EC 2.7.3.2) isoenzyme 2 (CK-MB) were conducted in Ontario, Canada, in 1989. Of the clinical laboratories participating, 66% used immunological methods and 24% used electrophoretic methods. Although reference ranges and interpretative routines varied widely, 95% of the laboratories reported correct interpretations for 10...

Although euryhaline teleosts can adapt to environmental fluctuation of salinity, their energy source for responding to changes in salinity and osmolarity remains unclear. This study examines the cellular localization of creatine kinase (CK) expression in branchia of tilapia (Oreochromis mossambicus). Western blot analysis of muscle-type CK (MM form) revealed a high association with salinity cha...

Since 1991, the Ontario Laboratory Proficiency Testing Program has assessed the analytical performance of creatine kinase (CK; EC 2.7.3.2) isoenzyme-2, using fresh human serum supplemented with purified human CK isoenzymes. In Ontario, the 142 laboratories licensed to analyze CK-2 use a variety of methods: electrophoresis-based, immunoinhibition, and mass assays. During a 1992 survey, duplicate...