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      Kuantifikasi Ekspresi Gen APH1A sebagai Marka Molekuler Alzheimer pada Monyet Ekor Panjang (Macaca fascicularis)

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      Date
      2023-07-31
      Author
      Sabrina, Zulia
      Darusman, Huda Shalahudin
      Setiyaningsih, Surachmi
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      Abstract
      Penyakit Alzheimer merupakan penyakit neurodegeneratif progresif yang ditandai akumulasi protein amyloid-β (Aβ) pada otak. Anterior pharynx defective-1 homolog A (APH1A) merupakan salah satu gen yang berperan dalam pembentukan Aβ. Untuk mengetahui patogenesis Alzheimer, monyet ekor panjang (Macaca fascicularis) telah digunakan sebagai hewan model karena memiliki kesamaan karakteristik dengan manusia penderita Alzheimer, yaitu pembentukan plak Aβ pada otak. Penelitian ini bertujuan untuk mengukur tingkat ekspresi gen APH1A sebagai marka molekuler Alzheimer pada otak M. fascicularis. Teknik reverse transcription-quantitative polymerase chain reaction (RT-qPCR) digunakan untuk kuantifikasi mRNA spesifik. Sampel yang digunakan berupa potongan hipokampus dan korteks yang berasal dari 8 ekor monyet yang dikelompokkan berdasarkan usia, yaitu muda dan tua. Data dianalisis berdasarkan kelompok usia, regio otak, dan regio otak pada kelompok usia. Secara keseluruhan, hasil tidak menunjukkan perbedaan nyata dalam ekspresi gen APH1A pada kelompok usia maupun di regio otak, meskipun jumlah transkripnya cenderung lebih tinggi pada usia muda dan korteks. Perbedaan yang menarik terlihat ketika membandingkan kelompok usia di wilayah hipokampus, dimana ekspresi gen APH1A signifikan lebih tinggi ditemukan pada kelompok usia muda. Studi ini menegaskan potensi M. fascicularis sebagai model untuk pemahaman molekuler penyakit Alzheimer dengan data penting ekspresi gen APH1A di otak, yang dapat membantu pengembangan terapi bertarget.
       
      Alzheimer's disease is a progressive neurodegenerative disorder characterized by amyloid-β (Aβ) accumulation in the brain. Anterior pharynx defective-1 homolog A (APH1A) gene plays role in Aβ formation. To study the disease's pathogenesis, long-tailed macaque (Macaca fascicularis) was used as animal models due to their Aβ plaque formation similarity to humans with Alzheimer's. The study aimed to measure APH1A gene expression as an Alzheimer's molecular marker in the M. fascicularis brain. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used for specific mRNA quantification. Samples from the hippocampus and cortex of eight monkeys, grouped by age (young and old), were analyzed by age group, brain region, and brain region by age group. Overall, no significant differences in APH1A gene expression were observed in age groups or brain regions, though there was a tendency for higher transcripts in the young and cortex. However, an intriguing finding emerged when comparing age groups in the hippocampal region, where significantly higher APH1A gene expression was detected in the young monkeys. This study highlights the potential of M. fascicularis as a model for understanding Alzheimer's molecular aspects and provides crucial data on APH1A gene expression in the brain, which may contribute to the development of targeted therapies.
       
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      http://repository.ipb.ac.id/handle/123456789/122852
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      • UT - Anatomy, Phisiology and Pharmacology [1047]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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