1. Fare Anestezi Prosedürleri <ol><li> Hayvanlar, kendi kafesinden dakikada 0.5 litre (buharlaştırıcı kontrollü) bir akış hızında kaldırılır ve izofluran% 5 ve% 100 oksijen gazı indüksiyon için ameliyat öncesi anestezi indüksiyon odasına yerleştirilir. </li><li> Fare, anestezi indüksiyon odasında sedasyon odasına çıkarıldı ve ventral karın saç tüy dökücü (1dk) kullanılması durumunda elektrik kesme makineleri ile traş, ya da odanın içinde korunur. </li><li> Hala sedasyon altında, tartılır, gözler, izofluran ve oksijen kullanarak bir burun konisi, steril oftalmik merhem ile yağlanır ve daha sonra, genel anestezi altında dolaşan bir sıcak su ısıtma cihazı dorsal recumbancy yerleştirilir. Bu noktada, dakikada 0.2 litre oksijen oranı azalır. </li><li> Karın klorheksidin solüsyonu ile püskürtülür (klorheksidin diasetat hızla bacterialcidal ve kalıcı) ve steril gazlı bez ile üç kez sildi ya da cerrahi bölge temiz olana kadar. </li></ol> 2. Fare Mikro-cerrahi ve Kurtarma Prosedürleri <ol><li> Ventral orta hat insizyonu (2cm), deri ve karın duvarı ile karın açığa iris makası ile yapılır. , Bir steril serum fizyolojik batırılmış 2x2in gazlı bez bağırsaklarda hayvanın sol tarafında yansıtmak için kullanılır. Bir fare süzgeç görselleştirme izin inferior vena kava (IVC) yerine konur. </li><li> Bu noktada,% 2 isoflurance ve 0.2 litre / dk% 100 oksijen oranı, bir bakım seviyesi cerrahi işlemin geri kalanı için kullanılır. </li><li> Künt diseksiyon steril bir aplikatör çubukla ve ekstra hassas iris yarım kavisli doku forseps kullanarak kolaylaştırılır. Bakım son derece kırılgan olduğu için fare dokuları ele alınmalıdır. IVC görüntüleme sağlayan, böylece karın boşluğuna girdikten sonra steril örtüyü üzerine bağırsaklarında yansıtacak ve exteriorize, steril bir tuzlu batırılmış 4x4in gazlı bez kullanın. </li><li> Yan dalları, non-reaktif 7-0 prolen sütür ile bağlandı ise bütün böbrek damarları iliak bifurkasyon IVC arka dalları, koterize. </li><li> IVC, böbrek damarları sadece alt, aort ayrılır. 7-0 prolen IVC Arter için kullanılır. </li><li> Iki katmanlı bir moda laparotomi sitesi kapalı. Laboratuvarımız sürekli bir desen 5-0 Vicryl, sentetik dikiş, karın duvarı kapatmak için kullanır. Yapışkan deri tutkal cilt kapatmak için kullanılır. Çıkarılması için herhangi bir dış sütür vardır. </li><li> Fare, daha sonra bireysel bir fare kafes içinde ele, bir ısıtma lambası (minimum mesafe 24 inç uzakta kafes) altında (2 saat 45 dakika) ameliyat sonrası gözlenen, daha sonra kendi özgün konut döndü. Bu çalışmanın amacı engel değilse, ağrı kesici ilaçlar ve anti-inflamatuar ajanlar kullanılabilir. Bilimsel ağrı kesici ilaçlar alıkoyma gerekçesi, veteriner ve ICUCA onayına ihtiyaç vardır. Laboratuvarımız Buprenorfin, 0.05-0.1 mg / kg SQ fareler için mükemmel bir pre-ve post-operatif ağrı kesici olduğunu tespit etmiştir. Lidokain az 4mg/kg (0.4 ml / kg% 1 solüsyon) ek olarak, sistemik analjezikler deneysel sonuçlar karıştırıcı kesi yeri aşılanan. </li><li> IVC veya herhangi bir drenaj dalları bağlandı veya koterize değildir hariç, her deney grubundan Şam hayvanların cerrahi yaklaşım için kullanılan yukarıdaki diseksiyon tabi. </li><li> Ötenazi, kemirgenler için Ötenazi Amerikan Veteriner Tıp Derneği Kuralları tarafından belirlenen tavsiyelere uygun olarak yapılır. </li></ol>

<ol>
	<li>Naess, I. A., Christiansen, S. C., Romundstad, P., Cannegieter, S. C., Rosendaal, F. R., Hammerstrom, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Incidence+and+mortality+of+venous+thrombosis:+a+population-based+study.">Incidence and mortality of venous thrombosis: a population-based study.</a> J Thromb Haemost. 5, 692-699 (2007).</li><li>White, R. H., Keenan, C. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+race+and+ethnicity+on+the+incidence+of+venous+thromboembolism.">Effects of race and ethnicity on the incidence of venous thromboembolism.</a> Thromb Res. 123, S11-S17 (2009).</li><li>Heit, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+epidemiology+of+venous+thromboembolism+in+the+community.">The epidemiology of venous thromboembolism in the community.</a> Arterioscler Thromb Vasc Biol. 28, 370-372 (2008).</li><li>Henke, P. K., Varga, A., De, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Deep+vein+thrombosis+resolution+is+modulated+by+monocyte+CXCR2-mediated+activity+in+a+mouse+model.">Deep vein thrombosis resolution is modulated by monocyte CXCR2-mediated activity in a mouse model.</a> Arterioscler Thromb Vasc Biol. 24, 1130-1137 (2004).</li><li>McDonald, A. P., Meier, T. R., Hawley, A. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Aging+is+associated+with+impaired+thrombus+resolution+in+a+mouse+model+of+stasis+induced+thrombosis.">Aging is associated with impaired thrombus resolution in a mouse model of stasis induced thrombosis.</a> Thromb Res. 125, 72-78 (2010).</li><li>Myers, D., Farris, D., Hawley, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Selectins+influence+thrombosis+in+a+mouse+model+of+experimental+deep+venous+thrombosis.">Selectins influence thrombosis in a mouse model of experimental deep venous thrombosis.</a> J Surg Res. 108, 212-221 (2002).</li><li>Myers, D. D., Hawley, A. E., Farris, D. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=P-selectin+and+leukocyte+microparticles+are+associated+with+venous+thrombogenesis.">P-selectin and leukocyte microparticles are associated with venous thrombogenesis.</a> J Vasc Surg. 38, 1075-1089 (2003).</li><li>Myers, D. D. J. r., Rectenwald, J. E., Bedard, P. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Decreased+venous+thrombosis+with+an+oral+inhibitor+of+P+selectin.">Decreased venous thrombosis with an oral inhibitor of P selectin.</a> J Vasc Surg. 42, 329-336 (2005).</li></ol>

İnferior Vena Kava Trombozu Fare Komple Durağanlık Model değişik yaştaki farelerin birden fazla suşları yapılabilir. Bu model en az 20 gram ağırlığı farelere en çok uygundur. Bu hayvan modelinde venöz tromboz, araştırmacılar, damar duvarı ve oklüzif venöz trombüs arasındaki inflamatuar etkileşimleri çalışmak için izin verir. Deneyimlerimizi, biz grup başına 10 veya daha fazla hayvan trombüs ağırlıkları, damar duvarının inflamatuvar hücre sayımı, damar duvarı protein, damar duvar...

<table border="1"><tbody><tr><td> Sarf Malzemeleri ve Ekipmanları </td></tr><tr><td> İsofluranın gaz </td></tr><tr><td> Prolen 7-0 sütür </td></tr><tr><td> Vicryl 5-0 sütür </td></tr><tr><td> Cilt tutkal </td></tr><tr><td> Göz madeni </td></tr><tr><td> Nolvasan Çözüm ya da bakteriyostatik çözüm </td></tr><tr><td> Stereomikroskopta kapsamı </td></tr><tr><td> MediCapture </td></tr><tr><td> Pamuk Aplikatörler </td></tr><tr><td> 2x2 tül </td></tr><tr><td> Isıtma yastığı </td></tr><tr><td> Anestezik makine </td></tr><tr><td> Cam boncuk enstrüman sterilizatör </td></tr><tr><td> Mikro cerrahi aletler </td></tr><tr><td> Karın Restrainers </td></tr></tbody></table>

mouse complete stasis model of inferior vena cava thrombosis

Venöz tromboemboli (VTE), derin ven trombozu (DVT) ve pulmoner emboli (PE) içerir. Amerika Birleşik Devletleri (ABD), yüksek morbidite ve mortalite oranları ciddi bir sağlık sorunu 1-2 VTE olun. VTE, kalp hastalığı ve inme sonrası üçüncü en yaygın damar hastalığı 3. Sadece ABD&#39;de her yıl etkilenen 300.000 ölüm yılda 3 oluşan, yaklaşık 900.000 kişi var. Bu hastalığın mekanizmaları incelemek için güvenilir bir in vivo hayvan modeli gereklidir. Inferior vena kava trombozu fare tam durağanlık modeli kullanmanın avantajları çok sayıda vardır. Fare modeli, maliyetleri önemli ölçüde azaltarak, sınırlı sayıda test ajanların çok küçük hacimli yönetim sağlar. En çok gelecek vaat eden spesifik inflamatuvar ve pıhtılaşma faktörü fonksiyonları belirlendi izin gen nakavt fareler için bir potansiyeldir. Şu moleküler deneyleri, damar duvarı, trombüs, tam kan ve plazma deneyleri için kantitatif için izin verir. Ancak, bu model ile ilgili büyük bir endişe ameliyat boyutu kısıtlamaları ve gemilerin kırılganlık. Ayrıca, küçük IVC örnek ağırlığı (ortalama 0.005 gram) sayesinde gerçek zamanlı polimeraz zincir reaksiyonu (RT-PCR), western blot gibi hayvansal doku için doğru istatistiksel analiz numaraları, trombüs ve kan testleri artırmak için gerekli enzyme-linked immunosorbent (ELISA), zymography, damar duvarı ve trombüs hücresel analiz ve tam kan ve plazma testleri 4-8. Staz modeli ile büyük bir dezavantaj, kan akışının olmaması, trombüs ve damar duvarı üzerinde uygulanan sistemik terapötik ajanlar maksimal etkisi inhibe ettiği.

Watch this Scientific Journal Video about Mouse Complete Stasis Model of Inferior Vena Cava Thrombosis at JoVE.com

Mouse Complete Stasis Model of Inferior Vena Cava Thrombosis

Inferior vena kava trombozu fare tam durağanlık modeli ven duvar dokusu ve trombüs ölçülebilir miktarda verir. Bu damar duvar ve oklüzif trombüs arasındaki etkileşimleri ve akut ve kronik inflamasyon ilerlemesini değerlendirmek değerlendirmek için yararlı olduğu kanıtlanmıştır.

İnferior Vena Kava Trombozu Fare Komple Durağanlık Model

Venous thromboembolism (VTE) includes both deep vein thrombosis (DVT) and pulmonary embolism (PE).  In the United States (U.S.), the high morbidity and ...

mouse-complete-stasis-model-of-inferior-vena-cava-thrombosis

Research

JoVE Journal

Medicine

18.1K Görüntüleme.  University of Michigan. Inferior vena kava trombozu fare tam durağanlık modeli ven duvar dokusu ve trombüs ölçülebilir miktarda verir. Bu damar duvar ve oklüzif trombüs arasındaki etkileşimleri ve akut ve kronik inflamasyon ilerlemesini değerlendirmek değerlendirmek için yararlı olduğu kanıtlanmıştır.

Video: Mouse Complete Stasis Model of Inferior Vena Cava Thrombosis

Electrolytic Inferior Vena Cava Model (EIM) of Venous Thrombosis

Animal models serve a vital role in deep venous thrombosis (DVT) research in order to study thrombus formation, thrombus resolution and to test potential therapeutic compounds (1). New compounds to be utilized in the treatment and prevention of DVT are currently being developed. The delivery of potential therapeutic antagonist compounds to an affected thrombosed vein has been problematic. In the context of therapeutic applications, a model that uses partial stasis and consistently generates thrombi within a major vein has been recently established. The Electrolytic Inferior vena cava Model (EIM) is mouse model of DVT that permits thrombus formation in the presence of continuous blood flow. This model allows therapeutic agents to be in contact with the thrombus in a dynamic fashion, and is more sensitive than other models of DVT (1). In addition, this thrombosis model closely simulates clinical situations of thrombus formation and is ideal to study venous endothelial cell activation, leukocyte migration, venous thrombogenesis, and to test therapeutic applications (1). The EIM model is technically simple, easily reproducible, creates consistent thrombi sizes and allows for a large sample (i.e. thrombus and vein wall) which is required for analytical purposes.

Electrolytic Inferior Vena Cava Model EIM of Venous Thrombosis

The electrolytic induction of endothelial activation to the internal surface of the Inferior Vena Cava results in venous type thrombus formation due to endothelial activation and partial blood stasis, two components of Virchow's triad.

Ven Trombozu Elektrolitik inferior vena kava Modeli (EIM)

Animal models serve a vital role in deep venous thrombosis (DVT) research in order to study thrombus formation, thrombus resolution and to test potential ...

Tıp

Quantitative Analysis and Characterization of Atherosclerotic Lesions in the Murine Aortic Sinus

Atherosclerosis is a disease of the large arteries and a major underlying cause of myocardial infarction and stroke. Several different mouse models have been developed to facilitate the study of the molecular and cellular pathophysiology of this disease. In this manuscript we describe specific techniques for the quantification and characterization of atherosclerotic lesions in the murine aortic sinus and ascending aorta. The advantage of this procedure is that it provides an accurate measurement of the cross-sectional area and total volume of the lesion, which can be used to compare atherosclerotic progression across different treatment groups. This is possible through the use of the valve leaflets as an anatomical landmark, together with careful adjustment of the sectioning angle. We also describe basic staining methods that can be used to begin to characterize atherosclerotic progression. These can be further modified to investigate antigens of specific interest to the researcher. The described techniques are generally applicable to a wide variety of existing and newly created dietary and genetically-induced models of atherogenesis.

We describe procedures to quantify and characterize atherosclerotic lesions in mouse models using precision sectioning of the aortic sinus and ascending aorta combined with histochemical and immunohistochemical analysis.

Atherosclerosis is a disease of the large arteries and a major underlying cause of myocardial infarction and stroke. Several different mouse models have ...

Implantation of Inferior Vena Cava Interposition Graft in Mouse Model

Biodegradable scaffolds seeded with bone marrow mononuclear cells (BMCs) are often used for reconstructive surgery to treat congenital cardiac anomalies. The long-term clinical results showed excellent patency rates, however, with significant incidence of stenosis. To investigate the cellular and molecular mechanisms of vascular neotissue formation and prevent stenosis development in tissue engineered vascular grafts (TEVGs), we developed a mouse model of the graft with approximately 1 mm internal diameter. First, the TEVGs were assembled from biodegradable tubular scaffolds fabricated from a polyglycolic acid nonwoven felt mesh coated with &#949;-caprolactone and L-lactide copolymer. The scaffolds were then placed in a lyophilizer, vacuumed for 24 hr, and stored in a desiccator until cell seeding. Second, bone marrow was collected from donor mice and mononuclear cells were isolated by density gradient centrifugation. Third, approximately one million cells were seeded on a scaffold and incubated O/N. Finally, the seeded scaffolds were then implanted as infrarenal vena cava interposition grafts in C57BL/6 mice. The implanted grafts demonstrated excellent patency (&#62;90%) without evidence of thromboembolic complications or aneurysmal formation. This murine model will aid us in understanding and quantifying the cellular and molecular mechanisms of neotissue formation in the TEVG.

To improve our knowledge of cellular and molecular neotissue formation, a murine model of the TEVG was recently developed. The grafts were implanted as infrarenal vena cava interposition grafts in C57BL/6 mice. This model achieves similar results to those achieved in our clinical investigation, but over a far shortened time-course.

Fare Modeli Inferior Vena Cava İnterpozisyon Greft İmplantasyonu

Biodegradable scaffolds seeded with bone marrow mononuclear cells (BMCs) are often used for reconstructive surgery to treat congenital cardiac anomalies. ...

Orthotopic Injection of Breast Cancer Cells into the Mammary Fat Pad of Mice to Study Tumor Growth.

Breast cancer growth can be studied in mice using a plethora of models. Genetic manipulation of breast cancer cells may provide insights into the functions of proteins involved in oncogenic progression or help to discover new tumor suppressors. In addition, injecting cancer cells into mice with different genotypes might provide a better understanding of the importance of the stromal compartment. Many models may be useful to investigate certain aspects of disease progression but do not recapitulate the entire cancerous process. In contrast, breast cancer cells engraftment to the mammary fat pad of mice better recapitulates the location of the disease and presence of the proper stromal compartment and therefore better mimics human cancerous disease. In this article, we describe how to implant breast cancer cells into mice orthotopically and explain how to collect tissues to analyse the tumor milieu and metastasis to distant organs. Using this model, many aspects (growth, angiogenesis, and metastasis) of cancer can be investigated simply by providing a proper environment for tumor cells to grow.

Cancer is a complex disease that is influenced by the tissue surrounding the tumor as well as local pro- and anti-inflammatory mediators. Therefore, orthotropic injection models, rather than subcutaneous models may be useful to study cancer progression in a manner that better mimics human pathology.

Farelerin Meme Fat Pad içine Meme Kanseri Hücreleri Ortotopik Enjeksiyon Tümör Büyüme Eğitim için.

Breast cancer growth can be studied in mice using a plethora of models. Genetic manipulation of breast cancer cells may provide insights into the ...

Ferric Chloride-induced Thrombosis Mouse Model on Carotid Artery and Mesentery Vessel

Severe thrombosis and its ischemic consequences such as myocardial infarction, pulmonary embolism and stroke are major worldwide health issues. The ferric chloride injury is now a well-established technique to rapidly and accurately induce the formation of thrombi in exposed veins or artery of small and large diameter. This model has played a key role in the study of the pathophysiology of thrombosis, in the discovery and validation of novel antithrombotic drugs and in the understanding of the mechanism of action of these new agents. Here, the implementation of this technique on a mesenteric vessel and carotid artery in mice is presented. The method describes how to label circulating leukocytes and platelets with a fluorescent dye and to observe, by intravital microscopy on the exposed mesentery, their accumulation at the injured vessel wall which leads to the formation of a thrombus. On the carotid artery, the occlusion caused by the clot formation is measured by monitoring the blood flow with a Doppler probe.

The FeCl3 induced thrombosis model in mice is described herein. A method to monitor thrombus growth by intravital microscopy observation on a mesenteric vessel and by blood flow measurement in the carotid artery is presented.

Ferric Klorür kaynaklı Karotis Arter ve Mezenter Gemi Tromboz Fare Modeli

Severe thrombosis and its ischemic consequences such as myocardial infarction, pulmonary embolism and stroke are major worldwide health issues. The ferric ...

Ferric Chloride-induced Murine Thrombosis Models

Arterial thrombosis (blood clot) is a common complication of many systemic diseases associated with chronic inflammation, including atherosclerosis, diabetes, obesity, cancer and chronic autoimmune rheumatologic disorders. Thrombi are the cause of most heart attacks, strokes and extremity loss, making thrombosis an extremely important public health problem. Since these thrombi stem from inappropriate platelet activation and subsequent coagulation, targeting these systems therapeutically has important clinical significance for developing safer treatments. Due to the complexities of the hemostatic system, in vitro experiments cannot replicate the blood-to-vessel wall interactions; therefore, in vivo studies are critical to understand pathological mechanisms of thrombus formation. To this end, various thrombosis models have been developed in mice. Among them, ferric chloride (FeCl3) induced vascular injury is a widely used model of occlusive thrombosis that reports platelet activation and aggregation in the context of an aseptic closed vascular system. This model is based on redox-induced endothelial cell injury, which is simple and sensitive to both anticoagulant and anti-platelets drugs. The time required for the development of a thrombus that occludes blood flow gives a quantitative measure of vascular injury, platelet activation and aggregation that is relevant to thrombotic diseases. We have significantly refined this FeCl3-induced vascular thrombosis model, which makes the data highly reproducible with minimal variation. Here we describe the model and present representative data from several experimental set-ups that demonstrate the utility of this model in thrombosis research.

We report a refined procedure of the ferric chloride (FeCl3)-induced thrombosis models on carotid and mesenteric artery as well as vein, characterized efficiently using intravital microscopy to monitor time to occlusive thrombi formation.

Ferrik klorit indüklenen fare tromboz modellerinde

Arterial thrombosis (blood clot) is a common complication of many systemic diseases associated with chronic inflammation, including atherosclerosis, ...

Patch Angioplasty in the Rat Aorta or Inferior Vena Cava

Pericardial patches are commonly used in vascular surgery to close vessels. To facilitate studies of the neointimal hyperplasia that forms on the patch, we developed a rat model of patch angioplasty that can be used in either a vein or an artery, creating a patch venoplasty or a patch arterioplasty, respectively. Technical aspects of this model are discussed. The infra-renal IVC or aorta are dissected and then clamped proximally and distally. A 3 mm venotomy or arteriotomy is performed in the infrarenal inferior vena cava or aorta of 6 to 8 week-old Wistar rats. A bovine pericardial patch (3 mm x 1.5 mm x 0.6 mm) is then used to close the site using a 10-0 nylon suture. Compared to arterial patches, venous patches show increased neointimal thickness on postoperative day 7. This novel model of pericardial patch angioplasty can be used to examine neointimal hyperplasia on vascular biomaterials, as well as to compare the differences between the arterial and venous environments.

We have established a model of pericardial patch angioplasty that can be used in either small-diameter veins or arteries. This model can be used to compare venous and arterial neointimal hyperplasia formation.

Sıçan Aort veya İnferior Vena Cava de Anjiyoplasti Patch

Pericardial patches are commonly used in vascular surgery to close vessels. To facilitate studies of the neointimal hyperplasia that forms on the patch, ...

A Rat Model of Orthotopic Liver Transplantation Using a Novel Magnetic Anastomosis Technique for Suprahepatic Vena Cava Reconstruction

The rat model of orthotopic liver transplantation (OLT) is essential for transplant research. It is a very sophisticated animal model and requires a steep learning curve. The introduction of the cuff technique for anastomosis of the portal vein (PV) and infrahepatic vena cava (IHVC) has significantly simplified the transplant procedure in rats. However, due to the short anterior wall of the recipients' suprahepatic vena cava (SHVC), the cuff technique is very difficult to use for the reconstruction of the SHVC. Most researchers in this field still use the hand-suture technique for SHVC reconstruction, which makes it the bottleneck step in rat orthotopic liver transplantation. The magnetic anastomosis technique (i.e., magnamosis) is a method of connecting two vessels using the attractive force between two magnets. Our recent study has shown that the magnetic anastomosis technique is superior to the hand-suture technique for SHVC reconstruction in rats. In this article, we show a step-by-step protocol for SHVC reconstruction in rats using the novel magnetic anastomosis technique. In this model, the reconstruction of the PV and IHVC was performed by the standard cuff technique, while the reconstruction of the bile duct (BD) was performed by a stent technique. The hepatic re-arterialization was not performed. The magnetic anastomosis technique made SHVC reconstruction much easier and significantly shortened the anphepatic phase. After a reasonable learning curve, even researchers without advanced microsurgical skills can produce reliable and reproducible results using this rat model of OLT.

The reconstruction of the suprahepatic vena cava (SHVC) remains a difficult step in rat orthotopic liver transplantation. In this article, we show a step-by-step protocol for SHVC reconstruction in rats using a novel magnetic anastomosis technique.

Orthotopic fare modeli bir roman manyetik anastomoz teknik Suprahepatic Vena kava imar için kullanılarak karaciğer nakli

The rat model of orthotopic liver transplantation (OLT) is essential for transplant research. It is a very sophisticated animal model and requires a steep ...

Ferric Chloride-induced Canine Carotid Artery Thrombosis: A Large Animal Model of Vascular Injury

Occlusive arterial thrombosis leading to cerebral ischemic stroke and myocardial infarction contributes to ~13 million deaths every year globally. Here, we have translated a vascular injury model from a small animal into a large animal (canine), with slight modifications that can be used for pre-clinical screening of prophylactic and thrombolytic agents. In addition to the surgical methods, the modified protocol describes the step-by-step methods to assess carotid artery canalization by angiography, detailed instructions to process both the brain and carotid artery for histological analysis to verify carotid canalization and cerebral hemorrhage, and specific parameters to complete an assessment of downstream thromboembolic events by utilizing magnetic resonance imaging (MRI). In addition, specific procedural changes from the previously well-established small animal model necessary to translate into a large animal (canine) vascular injury are discussed.

Here, we present the modifications necessary to a well characterized and commonly used small animal ferric chloride-induced (FeCl3) carotid artery injury model for use in a large animal vascular injury model. The resulting model can be utilized for pre-clinical trial assessment of both prophylactic and thrombolytic pharmacological and mechanical interventions.

Ferrik klorid kaynaklı köpek karotid arter trombozu: Bir büyük hayvan modeli vasküler yaralanma

Occlusive arterial thrombosis leading to cerebral ischemic stroke and myocardial infarction contributes to ~13 million deaths every year globally. Here, ...

Isometric Contractility Measurement of the Mouse Mesenteric Artery Using Wire Myography

The wire myograph technique is used to assess the contractility of vascular smooth muscles in response to depolarization, GPCR agonists/inhibitors and drugs. It is widely used in many studies on the physiological functions of vascular smooth muscle, the pathogenesis of vascular diseases such as hypertension, and the development of smooth muscle relaxant drugs. The mouse is a widely used model animal with a large pool of disease models and genetically modified strains. We introduced this method to measure the isometric contraction of mouse mesenteric artery in detail. A 1.4-mm segment of mouse mesenteric resistance artery was isolated and mounted on a myograph chamber by passing two steel wires through its lumen. After equilibration and normalization steps, the vessel segment was potentiated by a high-K+ solution twice prior to the contraction assay. As an example of the application of this method in drug development, we measured the relaxant effect of a novel natural substance, neoliensinine, isolated from a Chinese herb, embryos of the lotus seed (Nelumbo nucifera Gaertn.) on mouse mesenteric arteries. The vessel segments mounted on the myograph chamber were stimulated with a high-K+ solution. When the force tension reached a stable sustained phase, cumulative doses of neoliensinine were added to the chamber. We found that neoliensinine had a dose-dependent relaxant effect on smooth muscle contraction, thus suggesting that it bears potential activity against hypertension. In addition, as the vessel segment can survive at least 4 hours after mounting and maintain contractility induced by the high-K+ solution for many times, we suggest that the wire myograph system may be used for the time-consuming process of drug screening.

The wire myograph technique is used to investigate vascular smooth muscle functions and screen new drugs. We report a detailed protocol for measuring the isometric contractility of the mouse mesenteric artery and for screening new relaxants of vascular smooth muscle.

İzometrik Contractility ölçüm tel Myography kullanarak fare mezenterik arter

The wire myograph technique is used to assess the contractility of vascular smooth muscles in response to depolarization, GPCR agonists/inhibitors and ...