概要

Çoklu Zebra balığı için İlaç İdaresi Bir Roman Yöntemi (<em> Danio rerio</em>) Ve Çekilme Niceleme

Published: November 12, 2014
doi:

概要

A novel method for reducing variability when exposing fish to drugs is explained. Fish exposed to various patterns of ethanol exposure were found to have altered anxiety levels during withdrawal in a light/dark scototaxic assay.

Abstract

Anxiety testing in zebrafish is often studied in combination with the application of pharmacological substances. In these studies, fish are routinely netted and transported between home aquaria and dosing tanks. In order to enhance the ease of compound administration, a novel method for transferring fish between tanks for drug administration was developed. Inserts that are designed for spawning were used to transfer groups of fish into the drug solution, allowing accurate dosing of all fish in the group. This increases the precision and efficiency of dosing, which becomes very important in long schedules of repeated drug administration. We implemented this procedure for use in a study examining the behavior of zebrafish in the light/dark test after administering ethanol with differing 21 day schedules. In fish exposed to daily-moderate amounts of alcohol there was a significant difference in location preference after 2 days of withdrawal when compared to the control group. However, a significant difference in location preference in a group exposed to weekly-binge administration was not observed.

This protocol can be generalized for use with all types of compounds that are water-soluble and may be used in any situation when the behavior of fish during or after long schedules of drug administration is being examined. The light/dark test is also a valuable method of assessing withdrawal-induced changes in anxiety.

Introduction

Zebra balığı (Danio rerio) davranışsal 1 ve tıbbi araştırma 2,3 için yararlı bir model organizmadır Hindistan'da menşeli küçük bir teleost türdür. Balığı, sık davranışı üzerindeki etkilerini karakterize etmek amacıyla, çeşitli farmakolojik maddeler test kullanılır. Çeşitli dozlarda ve ilaç programları gibi uyarıcılar 4, anksiyolotikler 5 ve etanol 6-8 gibi bileşiklerin uygulanmasından sonra zebrafish davranışlarını araştırmak için kullanılmıştır.

Bizim laboratuvar da yaygın scototaxic deneyi olarak adlandırılan iyi valide açık / koyu tahlil 9, 20, zebrafish anksiyete ve lokomosyon etanol idarenin programları farklı etkilerini araştırmıştır. Etanol uygulama yeni bir yöntem uzun bir zaman periyodu (21 gün) üzerinde 6 tekrarlayan, günlük uygulama için verimliliğini artırmak için geliştirilmiştir </s> kadar. Daha önce kullanılan yöntemler ancak, biz ilişkili zaman maliyetleri ile, örgü azaltılmış bir yöntem geliştirmek için çalıştı, ve balık çok sayıda ilgi ilacın eşzamanlı, tam zamanlı yönetimini izin, pratik. Geleneksel araştırma kullanılarak, etanol içindeki, zebra balığı halinde ve etanol ve su 12/10 ve uygun bir karışım ihtiva eden başka bir tanka aktarılır. Bu yöntem yaygın olarak kabul iken, Zebra balığı örgü tanıtmak ve ilaç çözeltisinden balık kaldırmak için alınan zaman içinde değişkenlik artabilir. Bu nedenle, söz konusu bileşik için tam maruz tekrarlanan doz içeren bir deney boyunca değişebilir. Taşıma zamanlarda değişkenlik kaynaklanan hata kaynaklarını azaltan bir yöntem arzu edilir. Bizim yöntemi ile her balık özdeş dozlama süresi sonuçlanan, aynı anda tüm balık hareket edebiliyoruz. (Burada anlatıldığı gibi), etanol maruz kalmasını takiben, zebra balığı bir numbe test edilebilirkaygıyı ölçmek de dahil olmak üzere davranışsal deneyleri, r. Yeni yöntemi kullanarak balık grupları dozaj doğru çoğaltmak ve balık grupları konular arasında ve genelinde dozlama standardize etmek yeteneği ötesinde pratik kullanımları vardır. Araştırmacılar kendi deneylerde tekrarlanabilirliği ve doğruluğunu sağlamak için yöntemler kullanabilir görebilirsiniz seferde birden fazla balık takibi için izin verir, yeni yazılım gelişi. Davranışsal sinirbilim için bir model organizma olarak zebrafish yaygın kullanımı göz önüne alındığında, bu yöntem gelecekte farmakolojik çalışmalarda verimlilik ve pratiklik artacak.

Mevcut paradigmada, tekrarlanan doz çizelgesi yaklaşık insan içme programları yansıttığının istihdam edildi. Kontrolü, günlük-orta, ya da haftalık-alem: Balık rastgele bir üç gruba ayrıldı. Dozlama çizelgesi önemli ölçüde önceki çalışmalarda 7 pozlama süreleri aşması nedeniyle seçilmiş, süresi 21 gün idi. Kontrol balık sıfır Alco aldıhol, günlük-orta balık günde bir kez% 0.2 alkol aldı ve haftalık-tıkınırcasına balık haftada% 1.4 alkol kez aldı. Açık / koyu bir görev geri çekilmesinden 2 gün sonra anksiyete değerlendirmek için kullanıldı. Bu bir tarafta duvar beyaz ve diğer tarafta 9 karanlık olan bir dikdörtgen arena kullanan yönetmek için basit bir testtir. Yetişkin Zebra balığı sağlam kontrol koşulları 6,9,13 altında arena karanlık tarafını tercih ederim. Artan anksiyete operasyonel karanlık bölgede harcanan önemli ölçüde daha fazla zaman olarak tanımlanan ve balık ışık bölgesi harcanan nispeten daha fazla zaman harcıyor zaman anksiyete kabul edilebilir azalmıştır. Hareket-izleme yazılımı ile, diğer bilgilendirici değişkenler de ortalama hız, hareketsizlik, kıvrımlı dahildir, miktarı ve bölge 14 geçişler olabilir.

Laboratuvarda geliştirilen dozajlama metodu suda çözünür bileşikler, bir veya daha fazla zebrafi için tatbik edilen herhangi bir araştırma için geçerli olabilirsh. Bu metodoloji yararlanabilecek diğer birçok farmakolojik ajanlar da zebrabalıkları test ediliyor. Genel olarak test bileşikleri, etanol benzer bir şekilde içinde çözülür nikotin, klordiazepoksid, buspiron ve skopolamin, yer alır; su içine kimyasal uygun bir miktarda karıştırarak. Bu nedenle, bu işlemin genel kapsamı çok daha geniş ve etanol ile sınırlı değildir. Ayrıca, birden fazla gün boyunca ilaç verilmesinden sonra, açık / koyu bir görev kullanılabilirdi birçok davranış testleri sadece bir tanesidir. İlaç uygulamasından sonra veya çekilme sırasında, kullanılabilir diğer popüler deneyler yeni tankı dalış testi 15 ve 16 shoaling gibi sosyal davranış testlerini kapsamaktadır. Aşağıdaki prosedür tekrar tekrar ilgi farmakolojik bileşiği içeren çözümler balık ya da bireysel balık gruplarının nakledilmesi etkili bir yöntem açıklayacağım. Buna ek olarak, ışık / karanlık testi ile test anksiyete süreciAlkol tatbikat uzun programları maruz bırakıldıktan sonra geri çekme olan balık gruplar olarak tarif edilecektir.

Protocol

Tüm prosedürler ve davranışsal test bakımı ve deney hayvanlarının kullanımı için Hayvan Bakım kurallarına için Kanadalı Konseyi ile uyumlu olduğunu protokol numarası 06-11-12 altında MacEwan Üniversitesi Hayvan Araştırmaları Etik Kurulu tarafından onaylanmıştır. 1. Doz Tankları, Çözümler ve Yönetim takvimi hazırlayın Hayvanlar aynı ortamda ve görsel uyaranlara zaman ya da itme düzeneğinin herhangi bir boşa önlemek için günün aynı süre i?…

Representative Results

Yukarıda tarif edildiği gibi sürekli olarak ve doğru bir zaman etanol tatbikat süresi önemlidir zebrabalıkları farmakolojik çalışmalarda doğruluk ve kontrolü sağlamak için. Bizim prosedür dozlama prosedürünün kolaylığı ve verimi artırabilir. Haftalık-aşırı ya da günlük orta derecede ya da zamanlama etanol yönetim kontrol grubu ile karşılaştırıldığında, aydınlık / karanlık testi ile ölçülen değiştirilmiş anksiyete, sonuçlandı. Iki gün son dozdan sonra test edildiğinde, (…

Discussion

Zebra balığı ilaç verilmesini içeren önceki çalışmalarda sadece ilaç solüsyonu 12,16 içine kendi tankından onları taşımak için balık filelere dayanmıştır. Netleştirme her zaman tutarlı değildir ve genellikle nedeniyle önemli bireysel değişkenlik zebrabalıkları, bir kaçış tepkisi beklenenden daha uzun sürer. Geleneksel transfer yöntemleri, yararlı ise de, balık, su dışında geçirmek toplam süreyi azaltarak, hem de hayvanlar arasındaki aktarım süresi değişkenlik mikt…

開示

The authors have nothing to disclose.

Acknowledgements

The authors have nothing to disclose.

Materials

Three Shelf benchtop housing system Aquatic Habitats N/A http://aquatichabitats.com/research-systems/z-hab-system/
1.5L Spawning tank w/400 micron baffle Aquatic Habitats N/A http://aquatichabitats.com/consumables/tanks-lids-and-baffles/info/nursery-tank-and-baffles/
Pure Grain Ethanol Luxco, INC N/A http://www.luxco.com/public/brands/brands.asp?brandid=21
Ethovision XT Motion tracking software Noldus Information Technology http://www.noldus.com/animal-behavior-research/products/ethovision-xt
Pipette Eppendorf Canada http://www.eppendorf.ca/int/index.php?l=211&pb=e396f9e705e754a3&action=products&contentid=1&catalognode=9477. 
Light/Dark Arena Custom Construct as per procedure description. 9.5cm wide, 9.5cm deep, 55cm long

参考文献

  1. Spence, R., Gerlach, G., Lawrence, C., Smith, C. The behaviour and ecology of the zebrafish, Danio rerio. Biological Reviews. 83 (1), 13-34 (2008).
  2. Langheinrich, U. Zebrafish: A new model on the pharmaceutical catwalk. BioEssays. 25 (9), 904-912 (2003).
  3. Santoriello, C., Zon, L. I. Hooked! Modeling human disease in zebrafish. Journal of Clinical Investigation. 122 (7), 2337-2343 (2012).
  4. Miller, N., Greene, K., Dydinski, A., Gerlai, R. Effects of nicotine and alcohol on zebrafish ( Danio rerio) shoaling. Behavioural brain research. , (2012).
  5. Bencan, Z., Sledge, D., Levin, E. D. Buspirone, chlordiazepoxide and diazepam effects in a zebrafish model of anxiety. Pharmacology Biochemistry and Behavior. 94 (1), 75-80 (2009).
  6. Holcombe, A., Howorko, A., Powell, R. A., Schalomon, M., Hamilton, T. J. Reversed Scototaxis during Withdrawal after Daily-Moderate, but Not Weekly-Binge Administration of Ethanol in Zebrafish. PLoS ONE. 8 (5), (2013).
  7. Mathur, P., Guo, S. Differences of acute versus chronic ethanol exposure on anxiety-like behavioral responses in zebrafish. Behavioural Brain Research. 219 (2), 234-239 (2011).
  8. Dlugos, C., Rabin, R. Ethanol effects on three strains of zebrafish: model system for genetic investigations. Pharmacology Biochemistry and Behavior. , (2003).
  9. Maximino, C., et al. Scototaxis as anxiety-like behavior in fish. Nature Protocols. 5 (2), 209-216 (2010).
  10. Gerlai, R., Lee, V., Blaser, R. Effects of acute and chronic ethanol exposure on the behavior of adult zebrafish (Danio rerio). Pharmacology Biochemistry and Behavior. 85 (4), 752-761 (2006).
  11. Egan, R. J., et al. Understanding behavioral and physiological phenotypes of stress and anxiety in zebrafish. Behavioural brain research. 205 (1), 38-44 (2009).
  12. Gebauer, D. L., et al. Effects of anxiolytics in zebrafish: Similarities and differences between benzodiazepines, buspirone and ethanol. Pharmacology Biochemistry and Behavior. 99 (3), 480-486 (2011).
  13. Serra, M. C., Mattioli, R. Natural preference of zebrafish (Danio rerio) for a dark environment. Braz J Med Biol Res. 32 (12), 1551-1553 (1999).
  14. Maximino, C., et al. Behavioral and neurochemical changes in the zebrafish leopard strain. Genes Brain Behav. 12 (5), 576-582 (2013).
  15. Levin, E. D., Bencan, Z., Cerutti, D. T. Anxiolytic effects of nicotine in zebrafish. Physiology & Behavior. 90 (1), 54-58 (2007).
  16. Gerlai, R., Chatterjee, D., Pereira, T., Sawashima, T., Krishnannair, R. Acute and chronic alcohol dose: population differences in behavior and neurochemistry of zebrafish. Genes, Brain and Behavior. 8 (6), 586-599 (2009).
  17. Mathur, P., Berberoglu, M. A., Guo, S. Preference for ethanol in zebrafish following a single exposure. Behavioural Brain Research. 217 (1), 128-133 (2011).
  18. Renninger, S. L., et al. Investigating the genetics of visual processing, function and behaviour in zebrafish. Neurogenetics. 12, 97-116 (2011).
  19. Crawshaw, L. I., et al. Tolerance and withdrawal in goldfish exposed to ethanol. Physiology & Behaviour. 87 (3), 460-468 (2006).
  20. Hamilton, T. J., Holcombe, A. Tresguerres, M.CO2-induced ocean acidification increases anxiety in rockfish via alteration of GABAA receptor functioning. Proceedings of the Royal Society B. , (2014).
  21. Ramsay, J. M., Feist, G. W., Varga, Z. M., Westerfield, M., Kent, M. L., Schreck, C. B. Whole-body cortisol response of zebrafish to acute net handling stress. Aquaculture. 297 (1-4), 157-164 (2009).
  22. Hamilton, T. J., Paz-Yepes, J., Morrison, R. A., Palenik, B., Tresguerres, M. Exposure to bloom-like concentrations of two marine Synechococcus cyanobacteria (strains CC9311 and CC9902) differentially alters fish behaviour. Conservation Physiology. 2 (1), (2014).

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記事を引用
Holcombe, A., Schalomon, M., Hamilton, T. J. A Novel Method of Drug Administration to Multiple Zebrafish (Danio rerio) and the Quantification of Withdrawal. J. Vis. Exp. (93), e51851, doi:10.3791/51851 (2014).

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