The observations of protracted changes in neurotransmitter levels coupled with neuronal loss have particular significance, given the critical roles of the nigrostriatal and mesocorticolimbic dopaminergic systems in controlling fine motor behavior and complex cognitive function, respectively (Clark et al. 2004; Crossman 2000; Remy and Samson 2003).
The most important aspect of the study is that the observation of patients was protracted for 48 h, in a clinical condition characterized by shortage of sophisticated diagnostic instruments.
A number of factors have frustrated efforts to elucidate the disease, and to develop diagnostic and treatment approaches; these include conflicting observations in epidemiologic studies, protracted disease duration, poorly correlated symptoms and radiographic findings, and lack of effective therapies.
The reasons for this observation are not clear, but protracted critical illness and fragility after acute critical illness probably play important roles.
The protracted LM study was based on the PD observations described below and involved 34 patients, all treated with LM/TMZ, of whom 10 contributed PD samples.
Observation of gamma H2AX staining several days after RIT administration emphasizes the different complex and protracted in time mechanisms involved in RIT effects on the tumor as even bystander cells in RIT experiments exhibit gamma H2AX staining 27 while in the case of external beam radiation, such staining can be observed only within hours post irradiation 28.
In combination with our findings, these observations highlight the importance of allowing players the opportunity to self-regulate their effort through slightly protracted rest intervals between points, without affecting the continuity of play, to ensure their safety and avoid heat-related injuries.
Another provocative observation is that the fever/rash symptomatology related to amifostine, which is noted in 7 10% of patients undergoing protracted subcutaneous amifostine administration and consists a major cause of amifostine discontinuation (Koukourakis et al, 2000a; Shaw and Bleakley, 2000), was not observed in the present study.
Triage systems and initial investigation in A&E to determine a differential diagnosis and whether admission was warranted, might be followed by further observations within a short stay assessment facility (AAU) for up to 48 hours; which could be further protracted because of shortage of acute ward beds.
