Endotracheal intubation with neck extension, positioning with the head rotated for shunt surgery and relative hypotension that often accompanies general anaesthesia, all heighten the risk of shunt surgery and may cause clinical deterioration in cases of existing cervical canal stenosis and myelopathy [ 10].
According to the comparison, the difference produced by two systems in dealing with problems is discussed, the cause of existing difference is analyzed and methods of reducing the difference are presented.
At the same time, this causes disappearance of existing deposits and is also thought to be due to utilization by the Symbiodinium cells [11].
Evidence from the IOM (2000), while clearly documenting that dust mite allergen exposure caused asthma in dust mite sensitive children, was less clear in documenting that such exposure caused exacerbation of existing asthma.
VEGF blockade can halt angiogenesis and reduce vessel leakage, but does not cause regression of existing vessels [6].
Although we cannot exclude the possibility that EGF is causing proliferation of existing ductal cells within the culture, this data suggests that at least some of the ductal cells may arise directly from exocrine cells but not from hepatocytes.
Such a counterdiffusion phenomenon could in theory also cause growth of existing nitrogen-containing bubbles and thus deterioration of symptoms of air-diving-induced decompression sickness (DCS).
Growing tumors undergo an angiogenic switch, i. e. tumor cells start to produce angiogenic growth factors that cause destabilization of existing blood vessels, angiogenic sprouting and generation of new immature blood vessels [ 1].
It has been reported that nocodazole and colchicine block the assembly of centrioles/basal bodies while not causing disassembly of existing ones (Boisvieux-Ulrich et al., 1989a; Jensen et al., 1987; Balczon et al., 1999; Le Clech, 2008).
