Influence of Matrix-Suspended Demineralized Bone on Osseous Repair Using a Critical-Sized Defect in the Rat (Rattus norvegicus) Calvarium

2008 ◽  
Vol 34 (2) ◽  
pp. 83-89 ◽  
Author(s):  
Bryan P. Kalish ◽  
George S. Schuster ◽  
Mark E. Peacock ◽  
Michael F. Cuenin ◽  
Gary D. Swiec ◽  
...  
Keyword(s):  
Rattus Norvegicus ◽  
Demineralized Bone ◽  
Critical Sized Defect

The Effect of Residual Calcium in Decalcified Freeze-dried Bone Allograft in a Critical-sized Defect in the Rattus norvegicus Calvarium

10.1563/780.1 ◽  
2006 ◽  
Vol 32 (2) ◽  
pp. 55-62 ◽  
Author(s):  
James W. Turonis ◽  
James C. McPherson ◽  
Michael F. Cuenin ◽  
Steven D. Hokett ◽  
Mark E. Peacock ◽  
...  
Keyword(s):  
Wound Healing ◽  
Rattus Norvegicus ◽  
Bone Growth ◽  
Bone Allograft ◽  
Tissue Banks ◽  
Control Group ◽  
Graft Material ◽  
Sprague Dawley ◽  
Freeze Dried ◽  
Critical Sized Defect

Abstract Demineralized freeze-dried bone allograft (DFDBA), a widely used graft material in periodontal regenerative procedures, is processed with hydrochloric acid in the attempt to expose proteins located within the bone matrixes that are capable of inducing new bone formation. However, the degree of DFDBA demineralization varies between tissue banks, which may have an effect on clinical regeneration. This study uses the critical-sized defect (CSD) model to evaluate the wound-healing response to the residual calcium of donor bone. If the percentage of residual calcium in a graft were demonstrated to significantly enhance wound healing, then periodontal patients may benefit from further standardization of human-allograft processing. Sixty adult, male, Harlan Sprague-Dawley rats (Rattus norvegicus) were randomly and equally divided into 4 test groups (ie, DFDBA at 1%, 2%, and 3% to 6% residual calcium levels and FDBA at 23% residual calcium) and a control group (no allograft). An 8-mm-diameter craniotomy was made in the rat calvarium, and polytetrafluoroethylene membranes with pore sizes of 0.50 μm were placed intracranially and ectocranially. Treatment materials were carefully placed into the CSD with a new sterilized dental amalgam carrier. Tetracycline hydrochloride was injected intraperitoneally for labeling new bone growth, and animals were euthanized 12 weeks postsurgery. As a result, histomorphometric bone fill at 12 weeks showed a statistically significant increase in the 2% DFDBA group as compared to all other groups. The authors conclude that a 2% residual calcium level in human DFDBA appears to significantly (P ≤ .05) enhance osseous wound healing in the rat calvarium.

Pengaruh Pemberian Ekstrak Daun Kluwih (Artocarpus camansi) Terhadap Penurunan Aktivitas SGPT Tikus Putih (Rattus norvegicus) Jantan Galur Wistar yang di Induksi Parasetamol Dosis Tinggi.

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Bara Pawana Satya Nagara
Keyword(s):  
Rattus Norvegicus ◽  
Control Group ◽  
Post Test

ABSTRAK Latar Belakang: Kebiasaan masyarakat Indonesia menggunakan obat-obatan yang mudah didapat seperti parasetamol, dimana parasetamol dijual secara bebas akan menyebabkan penyalahgunaannya menjadi lebih besar.Penyalahgunaan ini berakibat timbulnya efek samping  seperti efek hepatotoksik yang menimbulkan kerusakan pada sel-sel hati. Pengendalian efek hepatotoksi didalam tubuh dapat dibantu dengan mengkonsumsi makanan yang mengandung antioksidan. .Ekstrak daun kluwih (Artocarpus camansi) memiliki kandungan antioksidan seperti flavanoid yang diyakini dapat menurunkan aktivitas SGPT dan mengurangi efek toksisitas hepar oleh parasetmol. Tujuan: Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ekstrak daun kluwih (Artocarpus camansi) terhadap penurunan aktivitas SGPT  tikus putih (Rattus norvegicus) jantan galur Wistar yang diinduksi parasetamol. Metode: Merupakan post-test only control group mengunakan hewan coba tikus putih jantan galur Wistar yang dikelompokkan menjadi 3 kelompok yaitu kelompok kontrol (-), kelompok kontrol (+), kelompok perlakuan yang mendapat terapi ekstrak daun kluwih (Artocarpus camansi) 500 mg/Kg BB Hasil: Hasil penelitian menunjukkan pemberian ekstrak daun kluwih (Artocarpus camansi) dosis 500 mg/kg/BB/hari pada tikus tidak menurunkan secara bermakna aktivitas SGPT pada kelompok tikus yang diberi parasetamol dosis tinggi ( p=0,401 α=0,05) Kesimpulan: Parasetamol dosis tinggi meningkatkan secara bermakna aktivitas SGPT tikus putih (Rattus norveicus) galur Wistar. Pemberian ekstrak daun kluwih (Artocarpus camansi) pada aktivitas SGPT tikus putih (Rattus norveicus) galur Wistar menurunkan  secara tidak bermakna. Kata kunci : Artocarpus camansi, Parasetamol, SGPT

Overtraining of aerobic physical exercise reduce rats (Rattus norvegicus) memory

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Ni Made Ridla Parwata
Keyword(s):  
Body Weight ◽  
Physical Exercise ◽  
Rattus Norvegicus ◽  
Research Method ◽  
Male Rat ◽  
Control Group ◽  
Adult Male Rat ◽  
The Subject ◽  
Heavy Training

Overtraining syndrome is a decrease in physical capacity, emotions and immunity due to training that is too often without adequate periods of rest. Overtraining is often experienced by athletes who daily undergo heavy training with short break periods. This research aims to look at the effect of overtraining aerobic physical exercise on memory in mice. The research method was experimental in vivo with the subject of adult male rat (Rattus Norvegicus) Winstar strain aged 8-10 weeks, body weight 200-250 gr. Divided into three groups, namely the control group, aerobic group and overtraining group. The results of memory tests with water E Maze showed an increase in the duration of travel time and the number of animal errors made by the overtraining group (p = 0.003). This study concludes that overtraining aerobic physical exercise can reduce memory in rat hippocampus.

Efek Hipoglikemik Ekstrak Etanol Daun Kelor (Moringa oleifera L.) pada Tikus Putih (Rattus norvegicus) Jantan

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Rizqi Nur Azizah ◽  
Rachmat Kosman ◽  
Syarifah Khaerunnisa
Keyword(s):  
Rattus Norvegicus ◽  
Moringa Oleifera

Daun Kelor (Moringa oleifera L.) secara empiris digunakan oleh masyarakat sebagai antidiabetes. Penelitian ini  bertujuan untuk menentukan pengaruh pemberian ekstrak etanol daun kelor terhadap penurunan kadar glukosa darah tikus putih. Penelitian ini menggunakan 15 ekor tikus jantan yang dibagi menjadi 5 kelompok. Kelompok I merupakan kontrol negatif yang diberikan larutan Na.CMC 1%. Kelompok II, III dan IV adalah kelompok perlakuan yang diberikan ekstrak etanol daun kelor, berurutan, 50, 100, dan 150 mg/Kg BB. Kelompok V merupakan kontrol positif diberikan suspensi glibenklamid®. Sebelum perlakuan tikus dipuasakan selama 18 jam kemudian diinduksi dengan aloksan 150 mg/KgBB. Pengukuran kadar glukosa dilakukan pada hari ke 1, ke 3, ke 5, ke 7 dan ke 9. Hasil penelitian yang dilakukan menunjukkan ekstrak etanol daun kelor dapat menurunkan kadar glukosa darah. Dosis 100 mg/Kg BB memberikan efek penurunan kadar glukosa yang optimal dibandingkan dengan dosis ekstrak lainnya.

Analysis of Fibronectin and TGF-β1 Immunoexpression to Determination of Wound Vitality in Wistar Rats (Rattus norvegicus)

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Nita Novita ◽  
Hasrayati Agustina ◽  
Bethy S. Hernowo ◽  
Abdul H. Hassan
Keyword(s):  
Rattus Norvegicus ◽  
Wistar Rats ◽  
Age Determination ◽  
Scientific Field ◽  
Wound Age ◽  
Forensic Practice ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Tgf Β1

Wound examination is indispensable in forensic practice. The scientific field of wound age determination has advanced progressively during recent years.The purpose of this study was to determine the differences of fibronectin and TGF-β1 expression in both antemortem and postmortem wounds. This study was an experimental with completely randomized design.  The skin wounds (vital and postmortem) were taken from fourty Wistar rats and divided into 10 groups of rats. Immunohistochemical staining was performed to determine the differences between antemortem and postmortem wounds. The result showed that in 30 minutes after antemortem wound infliction, all of samples showed weak reactivity for fibronectin and TGF-β1 (100%).  In first hour after wound infliction, 3 samples (75%) showed weakly positive and 1 sample (25%) strongly positive for fibronectin and TGF-β1.  In 2 hour after wound infliction, 1 sample (25%) showed weakly positive and 3 sample (75%) strongly positive for fibronectin and TGF-β1.  In 3 and 4 hour after wound infliction, all of samples strongly positive for fibronectin and TGF-β1.  In postmortem wound, all of samples showed negativity for fibronectin and TGF-β1. In conclusion, fibronectin and TGF-β1 may be useful in the determination of wound vitality. Keywords: wound, fibronectin, TGF-β1, vitality

OS EFEITOS DO PLASMA RICO EM PLAQUETAS ASSOCIADO À VITAMINA C E ZINCO EM LESÃO EPITELIAL EM RATTUS NORVEGICUS

2019 ◽  
Author(s):  
Matheus Gaspar De Miranda ◽  
David Wesley Ribeiro Muniz ◽  
José Campelo De Sousa Neto ◽  
Renan Roberto Rodrigues Reis ◽  
Esmeralda Maria Lustosa Barros ◽  
...  
Keyword(s):  
Rattus Norvegicus
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