Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
129-255 |
DRI_Approach |
denotes |
The leucine-rich repeat kinase 2 (LRRK2) mutation G2019S is one of the most common genetic causes in Parkinson's disease (PD). |
T2 |
256-273 |
DRI_Challenge |
denotes |
The penetrance of |
T3 |
287-412 |
DRI_Challenge |
denotes |
is incomplete and is age-dependent, therefore, it has been speculated that environmental toxins and aging could contribute to |
T4 |
434-450 |
DRI_Challenge |
denotes |
PD pathogenesis. |
T5 |
451-535 |
DRI_Approach |
denotes |
To prove this speculation, we performed a longitudinal investigation in mice bearing |
T6 |
549-558 |
DRI_Approach |
denotes |
mutation. |
T7 |
559-562 |
DRI_Background |
denotes |
BAC |
T8 |
576-696 |
DRI_Background |
denotes |
transgenic (Tg) mice and their wildtype (Wt) littermates were treated with lactacystin, a specific proteasome inhibitor. |
T9 |
697-728 |
DRI_Background |
denotes |
The susceptibilities of mice to |
T10 |
763-841 |
DRI_Background |
denotes |
dopaminergic (DAergic) degeneration were evaluated, at 5 and 12 months of age. |
T11 |
842-1011 |
DRI_Outcome |
denotes |
We found that lactacystin treatment caused a greater decline of striatal DA content in the Tg mice at either 5 or 12 months of age than their age-matched Wt littermates. |
T12 |
1012-1192 |
DRI_Background |
denotes |
Moreover, the lactacystin-treated Tg or Wt mice at 12 months of age lose much more nigral tyrosine hydroxylase (TH)-positive neurons than the mice at 5 months of age, indicating an |
T13 |
1216-1230 |
DRI_Background |
denotes |
neurotoxicity. |
T14 |
1231-1421 |
DRI_Background |
denotes |
Additionally, stereotactic injection of lactacystin induced a dramatic increase of activated microglia in substantia nigra of mice at 12 months of age, compared with mice at 5 months of age. |
T15 |
1422-1575 |
DRI_Outcome |
denotes |
In summary, our study suggests that expression of the G2019S mutation in the mouse LRRK2 gene confers an age-associated high susceptibility to proteasome |
T16 |
1617-1630 |
DRI_Outcome |
denotes |
degeneration. |