Filamen PH: Perbedaan antara revisi
Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 26742913; atribusi sumber disertakan. |
Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi |
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'''Filamen PH''' () adalah tumpukan [[protein]] yang ditemukan pertama kali oleh [[Alois Alzheimer]] di dalam [[neuron]] penderita [[Alzheimer]]. | '''Filamen PH''' () adalah tumpukan [[protein]] yang ditemukan pertama kali oleh [[Alois Alzheimer]] di dalam [[neuron]] penderita [[Alzheimer]].<ref>alzi. [https://alzi.or.id/apa-yang-menyebabkan-demensia/ Apa yang menyebabkan demensia?]. ''Alzheimer Indonesia''. 2019-06-15.</ref> | ||
Filamen ini terbentuk dari berbagai [[isomer]] [[protein tau]] - sebuah [[protein]] yang berperan dalam perakitan dan pemeliharaan struktur [[mikrotubula]] - mengalami [[hiperfosforilasi]] sehingga memecahkan struktur [[mikrotubula]]. Radikal protein tau kemudian berhimpun menjadi filamen PH di dalam [[soma]]. | Filamen ini terbentuk dari berbagai [[isomer]]<ref>[http://www.ncbi.nlm.nih.gov/pubmed/2484340 Multiple isoforms of human microtubule-associated protein tau: sequences and localization in neurofibrillary tangles of Alzheimer's disease]. ''Medical Research Council, Laboratory of Molecular Biology, Cambridge, England; Goedert M, Spillantini MG, Jakes R, Rutherford D, Crowther RA''.</ref> [[protein tau]]<ref>[http://www.ncbi.nlm.nih.gov/pubmed/3131773 Cloning and sequencing of the cDNA encoding a core protein of the paired helical filament of Alzheimer disease: identification as the microtubule-associated protein tau]. ''Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom; Goedert M, Wischik CM, Crowther RA, Walker JE, Klug A''.</ref> - sebuah [[protein]] yang berperan dalam perakitan dan pemeliharaan struktur [[mikrotubula]] - mengalami [[hiperfosforilasi]] sehingga memecahkan struktur [[mikrotubula]]. Radikal protein tau kemudian berhimpun menjadi filamen PH di dalam [[soma]].<ref>[http://www.ncbi.nlm.nih.gov/pubmed/20553310 The Role of Tau in Alzheimer's Disease and Related Disorders]. ''Department of Neurobiology and Behavior and Institute for Memory Impairments and Neurological Disorders, University of California; Medeiros R, Baglietto-Vargas D, Laferla FM''.</ref> | ||
Hiperfosforilasi terjadi karena terjadi kerusakan transduksi sinyal seluler yang disebabkan oleh tid ak seimbangnya aktivitas [[protein]] dari beberapa [[enzim]] [[fosfatase]] dan [[kinase]],<ref>[http://www.ncbi.nlm.nih.gov/pubmed/20553310 The Role of Tau in Alzheimer's Disease and Related Disorders]. ''Department of Neurobiology and Behavior and Institute for Memory Impairments and Neurological Disorders, University of California; Medeiros R, Baglietto-Vargas D, Laferla FM''.</ref> seperti ''calmodulin-dependent protein kinase II'', ''[[glycogen synthase kinase-3beta]]'' dan ''cyclin-dependent protein kinase 5''.<ref>[http://www.ncbi.nlm.nih.gov/pubmed/18194444 Alzheimer neurofibrillary degeneration: significance, etiopathogenesis, therapeutics and prevention]. ''Department of Neurochemistry New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Grundke-Iqbal I''.</ref><ref>[http://www.ncbi.nlm.nih.gov/pubmed/17241267 Kinases and phosphatases and tau sites involved in Alzheimer neurofibrillary degeneration]. ''Pathophysiology Department, Tongji Medical College, Huazhong University of Science & Technology; Wang JZ, Grundke-Iqbal I, Iqbal K''.</ref> Proses kimiawi ini dapat diredam dengan meningkatkan aktivitas [[enzim]] [[fosfoseril protein fosfatase]]<ref>[http://www.ncbi.nlm.nih.gov/pubmed/15270196 Inhibition of neurofibrillary degeneration: a promising approach to Alzheimer's disease and other tauopathies]. ''Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Grundke-Iqbal I''.</ref> dan [[fosfotreonil protein fosfatase]].<ref>[http://www.ncbi.nlm.nih.gov/pubmed/10961432 Mechanism of neurofibrillary degeneration and pharmacologic therapeutic approach]. ''New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Alonso AD, Gondal JA, Gong CX, Haque N, Khatoon S, Sengupta A, Wang JZ, Grundke-Iqbal I''.</ref> | |||
== Referensi == | |||
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== Sumber dan atribusi == | == Sumber dan atribusi == | ||
Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Filamen+PH&oldid=26742913 Wikipedia bahasa Indonesia], revisi 26742913 (2025-01-05T05:55:51Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku. | Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Filamen+PH&oldid=26742913 Wikipedia bahasa Indonesia], revisi 26742913 (2025-01-05T05:55:51Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku. | ||
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Revisi terkini sejak 29 Agustus 2026 18.10
Filamen PH () adalah tumpukan protein yang ditemukan pertama kali oleh Alois Alzheimer di dalam neuron penderita Alzheimer.[1]
Filamen ini terbentuk dari berbagai isomer[2] protein tau[3] - sebuah protein yang berperan dalam perakitan dan pemeliharaan struktur mikrotubula - mengalami hiperfosforilasi sehingga memecahkan struktur mikrotubula. Radikal protein tau kemudian berhimpun menjadi filamen PH di dalam soma.[4]
Hiperfosforilasi terjadi karena terjadi kerusakan transduksi sinyal seluler yang disebabkan oleh tid ak seimbangnya aktivitas protein dari beberapa enzim fosfatase dan kinase,[5] seperti calmodulin-dependent protein kinase II, glycogen synthase kinase-3beta dan cyclin-dependent protein kinase 5.[6][7] Proses kimiawi ini dapat diredam dengan meningkatkan aktivitas enzim fosfoseril protein fosfatase[8] dan fosfotreonil protein fosfatase.[9]
Referensi
- ↑ alzi. Apa yang menyebabkan demensia?. Alzheimer Indonesia. 2019-06-15.
- ↑ Multiple isoforms of human microtubule-associated protein tau: sequences and localization in neurofibrillary tangles of Alzheimer's disease. Medical Research Council, Laboratory of Molecular Biology, Cambridge, England; Goedert M, Spillantini MG, Jakes R, Rutherford D, Crowther RA.
- ↑ Cloning and sequencing of the cDNA encoding a core protein of the paired helical filament of Alzheimer disease: identification as the microtubule-associated protein tau. Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom; Goedert M, Wischik CM, Crowther RA, Walker JE, Klug A.
- ↑ The Role of Tau in Alzheimer's Disease and Related Disorders. Department of Neurobiology and Behavior and Institute for Memory Impairments and Neurological Disorders, University of California; Medeiros R, Baglietto-Vargas D, Laferla FM.
- ↑ The Role of Tau in Alzheimer's Disease and Related Disorders. Department of Neurobiology and Behavior and Institute for Memory Impairments and Neurological Disorders, University of California; Medeiros R, Baglietto-Vargas D, Laferla FM.
- ↑ Alzheimer neurofibrillary degeneration: significance, etiopathogenesis, therapeutics and prevention. Department of Neurochemistry New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Grundke-Iqbal I.
- ↑ Kinases and phosphatases and tau sites involved in Alzheimer neurofibrillary degeneration. Pathophysiology Department, Tongji Medical College, Huazhong University of Science & Technology; Wang JZ, Grundke-Iqbal I, Iqbal K.
- ↑ Inhibition of neurofibrillary degeneration: a promising approach to Alzheimer's disease and other tauopathies. Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Grundke-Iqbal I.
- ↑ Mechanism of neurofibrillary degeneration and pharmacologic therapeutic approach. New York State Institute for Basic Research in Developmental Disabilities; Iqbal K, Alonso AD, Gondal JA, Gong CX, Haque N, Khatoon S, Sengupta A, Wang JZ, Grundke-Iqbal I.
Sumber dan atribusi
Konten artikel ini diadaptasi dari Wikipedia bahasa Indonesia, revisi 26742913 (2025-01-05T05:55:51Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku.