Ni Putu Sriwidyani
Departemen Patologi Anatomi Fakultas Kedokteran Universitas Udayana

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Journal : Jurnal Veteriner

Growth Hormone Menurunkan Ekspresi Protein p53 dan p21 Sel Endotel Tikus Jantan (GROWTH HORMONE REDUCES P53 AND P21 ENDOTHELIAL PROTEIN EXPRESSION IN MALE RATS) I Gusti Ayu Dewi Ratnayanti; Ni Putu Sriwidyani; I Dewa Ayu Inten Primayanti; I Gusti Kamasan; Nyoman Arijana; I Gusti Nyoman Sri Wiryawan; Ida Ayu Ika Wahyuniari; I Wayan Sugiritama; I Gusti Ngurah Mayun
Jurnal Veteriner Vol 17 No 3 (2016)
Publisher : Faculty of Veterinary Medicine, Udayana University and Published in collaboration with the Indonesia Veterinarian Association

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Abstract

The use of growth hormone (GH) treatment in aging related condition such as atherosclerosis is stillcontroversial. Previous study showed GH reduce atherosclerotic plaque and prevent endothelial cellsenescence. This study was aimed to understand the mechanism of GH effect to endothelial senescencethrough p53/p21 pathway. A randomized posttest only control group design study was conducted. Twentymale Wistar rats were randomized into five groups; negative control (P0), positive control (P1), and GHtreated group (P2, P3, P4). Negative control group was fed with standard diet, and others were fed withatherogenic diet for 20 weeks. After 10 weeks, subjects were injected subcutaneously (0,1 mL) with aquadest(P0 and P1) and increasing dose of GH (0,02 IU, 0,04 IU, and 0,08 IU) for P2, P3, P4 once a day respectivelyfor 10 weeks. In the end of the study all subjects were examined for p53 and p21 endothelial proteinexpressions. Immunohistochemistry of endothelial p53 showed reduce expression in treated groups (P0:7.28 ± 0.36; P1: 39.51 ± 1.18; P2: 32.70 ± 1.10; P3: 16.98 ± 0.78; and P4: 14.29 ± 0.38). The reduction was also observed in p21 expression (P0: 5.38 ± 0.49; P1: 37.81 ± 0.76; P2: 26.02 ± 1.54; P3: 16.37 ± 1.24; andP4: 4.82 ± 0.61. One way analysis of variance and post hoc test (LSD) analysis showed significant differencesbetween all groups (p<0.05). In conclusion, GH reduces endothelial expression of p53 and p21 and thispathway may contribute to GH effect on atherosclerotic plaque and endothelial senescence.
Co-Authors Anak Agung Ayu Ngurah Susraini Angelia Ongko Prabowo annie minerva datui Bintang Dwi Oktaviani Desak Made Cittarasmi Saraswati Seputra Herlina Eka Shinta Herman Saputra Herman Saputra Herman Saputra Herman Saputra Herman Saputra Herman Saputra I Dewa Ayu Inten Primayanti I Gde Raka Widiana I Gede Budhi Setiawan I Gede Indradika Pratama Putra I Gusti Ayu Dewi Ratnayanti I Gusti Ayu Sri Mahendra Dewi I Gusti Kamasan I Gusti Kamasan Arijana I Gusti Ngurah Made Cesar Vajrashrava Sunantara I Gusti Ngurah Mayun I Gusti Ngurah Pratama Yuda Atmaja I Gusti Nyoman Sri Wiryawan I Kadek Yana Parastuta I Ketut Bawantika Adi Putra I Made Gotra I Made Muliarta I MADE MULIARTA . I Wayan Juli Sumadi I Wayan Sugiritama Ida Ayu Ista Nariswari Ida Ayu Jasminarti Dwi Kusumawardani Ida Ayu Jelantik Astuti Ida Ayu Krisna Cantika Dewi Ida Ayu Meilasari Dewi Ida Bagus Ardya Kurnia Wilananda Ivana Juliarty Sitanggang Jovi Carina Handoko Kadek Cindy Dwi Cahyani Kadek Denik Suastini Kadek Dwi Pradnyawati Kandy Rosa Ismalia Katrin Rotua Simbolon Ketut Mulyadi Komang Chandra Surya Dika Luh Ayu Widayanti Luh Ayu Widayanti Luh Komang Ayu Widhiaty Karang Luh Putu Iin Indrayani Maker Luh Yeni Laksmini M. Arif Perdana Ariyansyah Made Agus Cahya Nugraha Koriawan Moestikaningsih . Ni Gusti Ayu Agung Manik Yuniawaty Wetan Ni Kadek Ayu Maya Damayanti Ni Kadek Ayu Maya Damayanti Ni Made Mahastuti Ni Putu Ekawati Ni Wayan Candrawati Ni Wayan Winari Ni Wayan Winarti Nornazirah Binti Azizan Popi Imelda Margareth Sitompul Putra, Putu Krishna B. S. Putu Ayu Widya Pramesti Putu Erika Paskarani Putu Febry Krisna Pertiwi Putu Julia Chandra Devi Sang Ayu Putu Yuliantini Silvia Nuhyil Indriani Sumadi, I Wayan J. Sylvi Diahningrum Tjandra Kristiana Volman Tampubolon Wimpie I Pangkahila