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Neuropathic pain<br />
The International Association for the Study of Pain<br />
(IASP) has defined neuropathic pain as “pain initiated<br />
or caused by a primary lesion or dysfunction of the<br />
ner vous system”. These lesions may be in the peripheral<br />
or central nervous system, and frequently both<br />
systems are involved with chronic neuropathic pain<br />
states. Examples include phantom limb and spinal<br />
cord injury pain, painful diabetic neuropathy, postherpetic<br />
neuralgia, sciatica, trigeminal neuralgia, and<br />
drug-induced (e.g. vinca alkaloids) neuropathy.<br />
Neurotransmitter<br />
A chemical substance in the brain that either excites<br />
or inhibits neural function.<br />
New Chemical Entity (NCE)<br />
A compound of a completely new chemical form,<br />
which has not been previously approved, and therefore<br />
can be patented.<br />
Nociceptors<br />
Sensory receptors responsible for nociception, the<br />
perception of pain in response to potentially damaging<br />
stimulus.<br />
NSAIDs<br />
Non-steroidal anti-inflammatory drugs.<br />
Off-label<br />
The use of a drug for a medical condition other than<br />
for which it was officially approved and marketed.<br />
Onset of action<br />
The length of time it takes for a medicine to start to work.<br />
Open label<br />
A study in which all parties (patient, physician and<br />
study coordinator) are informed of the drug and dose<br />
being administered.<br />
Opioids<br />
A synthetic drug (such as methadone) possessing narcotic<br />
properties similar to opiates but not derived<br />
from opium.<br />
Parkinson’s disease (PD)<br />
PD is a degenerative disorder of the central nervous<br />
system that affects the control of muscles, and so may<br />
affect movement, speech and posture. Parkinson’s disease<br />
belongs to a group of conditions called movement<br />
disorders. It is often characterized by muscle<br />
rigidity, tremor, a slowing of physical movement<br />
(bradykinesia), and in extreme cases, a loss of physical<br />
movement (akinesia). The primary symptoms are the<br />
result of excessive muscle contraction, normally<br />
caused by the insufficient formation and action of<br />
dopamine, which is produced in the dopaminergic<br />
neurons of the brain. Secondary symptoms may<br />
include high-level cognitive function and subtle language<br />
problems. PD is both chronic, meaning it persists<br />
over a long period of time, and progressive.<br />
Pivotal study<br />
Usually a phase III study which presents the data that<br />
the governmental agencies responsible for approving<br />
the marketing of pharmaceutical products (e.g. the US<br />
FDA and EMEA) use to decide whether or not to<br />
approve a drug. A pivotal study will generally be wellcontrolled,<br />
randomized, of adequate size, and whenever<br />
possible, double-blind.<br />
“ON” time<br />
During “ON” times, patients report they feel relatively<br />
fluid, clear, and in control of their movements. Often,<br />
symptoms of PD may be invisible to all but professionals.<br />
Placebo<br />
An inactive substance designed to resemble the drug<br />
being tested. It is used as a control to rule out any<br />
psychological effects testing may present.<br />
Glossary – <strong>Newron</strong> Annual Report 2011 7 3