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Para peneliti mengidentifikasi target baru ' druggable ' untuk penyakit sporadis Parkinson --T-REC semarang--komunitas reptil-semarang--KSE-komunitas satwa eksotik--berita artikel terkait tentang drugable dan parkinson

Para peneliti mengidentifikasi target baru  ' druggable ' untuk penyakit sporadis Parkinson

Date:
June 1, 2016
Source:
Buck Institute for Research on Aging
Summary:
sebuah study menunjukkan , Mekanisme yang sama yang menyebabkan kematian sel saraf pada tikus secara genetik ditakdirkan untuk mengembangkan penyakit Parkinson yang terlibat dalam bentuk sporadis jauh lebih umum dari yang berkaitan dengan usia, gangguan neurodegenerative yang merampas orang dari kemampuan untuk bergerak normal. Penelitian ini mengidentifikasi target baru yang menjanjikan untuk pengembangan obat untuk kondisi tidak dapat disembuhkan yang mempengaruhi sebanyak satu juta orang Amerika.
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Penelitian di Buck Institute menunjukkan mekanisme yang sama yang menyebabkan kematian sel saraf pada tikus secara genetik ditakdirkan untuk mengembangkan penyakit Parkinson (PD) yang terlibat dalam bentuk sporadis jauh lebih umum dari yang berkaitan dengan usia, gangguan neurodegenerative yang merampas orang kemampuan untuk bergerak secara normal. Penelitian yang diterbitkan dalam jurnal Neurobiology of Disease mengidentifikasi target baru yang menjanjikan untuk pengembangan obat untuk kondisi tidak dapat disembuhkan yang mempengaruhi sebanyak satu juta orang Amerika.

 
Penelitian ini difokuskan pada parkin - protein yang terlibat dalam degradasi dan membersihkan dari kedua protein rusak dan mitokondria melalui proses yang dikenal sebagai lisosom autophagy. Mutasi parkin terkait dengan bentuk familial yang jarang dari PD, dimana sel kehilangan kemampuan untuk mendaur ulang sampah internal. PD ditandai dengan akumulasi protein rusak dan mitokondria di area otak dimana neurotransmitter dopamine diproduksi.


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Researchers identify new 'druggable' target for sporadic Parkinson's disease
Date:
June 1, 2016
Source:
Buck Institute for Research on Aging
Summary:
The same mechanisms that lead to neuronal cell death in mice genetically fated to develop Parkinson's disease are involved in the much more common sporadic form of the age-related, neurodegenerative disorder that robs people of the ability to move normally, a new study shows. The research identifies new targets that show promise for drug development for an incurable condition that affects as many as one million Americans.
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Research at the Buck Institute shows the same mechanisms that lead to neuronal cell death in mice genetically fated to develop Parkinson's disease (PD) are involved in the much more common sporadic form of the age-related, neurodegenerative disorder that robs people of the ability to move normally. The research, published in the journal Neurobiology of Disease identifies new targets that show promise for drug development for an incurable condition that affects as many as one million Americans.
The study focused on parkin -- a protein involved in the degradation and purging of both damaged proteins and mitochondria via a process known as lysosomal autophagy. Mutations of parkin are linked to a rare familial form of PD, whereby the cell loses the ability to recycle its internal garbage. PD is characterized by the accumulation of damaged proteins and mitochondria in the area of the brain where the neurotransmitter dopamine is produced.
In this study scientists, led by Buck faculty Julie Andersen, PhD, showed that oxidative stress, which is one of the main drivers of sporadic PD, affected the parkin protein in the same way that genetic mutations do. "This gives us a significant insight into sporadic PD which accounts for 95 percent of all cases of the disease," said Andersen. "We also determined that the signaling pathway involved in the molecular dysfunction is a good target for drug development."
The pathway involves two master regulatory proteins, PGC-1alpha which affects the synthesis of new mitochondria and TFEB which is involved in breaking down old mitochondria. Both are down-regulated following oxidative stress. When scientists genetically increased the expression of PGC-1alpha in the affected mice, mitochondrial function was restored, preventing the degeneration of dopaminergic neurons affected by PD.
Researchers in the Andersen and Lithgow labs are now screening compounds in human cell culture and in nematode worms that have been genetically engineered to develop PD-like characteristics. The goal is to identify compounds that target the pathway and prevent the neurotoxic damage associated with the disease.


Story Source:
The above post is reprinted from materials provided by Buck Institute for Research on AgingNote: Materials may be edited for content and length.


Journal Reference:
1.    Julie Andersen, PhD et al. Detrimental effects of oxidative losses in parkin activity in a model of sporadic Parkinson’s disease are attenuated by restoration of PGC1 alphaNeurobiology of Disease, June 2016 DOI: 10.1016/j.nbd 2016.05.009


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