MC와 AVdP는 플랜더스의 과학 기술 (IWT-Vlaanderen)을 통해 혁신의 추진 연구소에서 보조금에 의해 지원 박사 동문 있습니다. JT는 UZ Leuven에서 파트 타임 임상 연구 휄로 십 (KOOR)를 보유하고 있습니다. DV는 구 Leuven, DBOF/10/062의 교부금으로 지원하는 박사 동료입니다. MMdC는 Conselho Nacional 드 Pesquisa 전자 Desenvolvimento (CNPq)와 에라스무스 (Erasmus) Mundus의 교부금으로 지원하는 박사 동료입니다. 연구는 EC 부여 DIMI (LSHB-CT-2005-512146)와 구 Leuven에서 생체 분자 이미징 연구 그룹 (IMIR)에 의해, IWT-Vlaanderen로 운영되었습니다. 우리는 rAAV 벡터 생산을위한 플라스미드 AAV6.2 포장의이 같은 선물 제임스 M. 윌슨에 의해 설립 UPenn 벡터 코어를 인정하고 싶습니다.

<ol>
	<li>Willson, D. F., Notter, R. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+future+of+exogenous+surfactant+therapy.">The future of exogenous surfactant therapy.</a> Respir. Care. 56, 1369-1388 (2011).</li><li>Abdel-Latif, M. E., Osborn, D. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intratracheal+Clara+cell+secretory+protein+(CCSP)+administration+in+preterm+infants+with+or+at+risk+of+respiratory+distress+syndrome.">Intratracheal Clara cell secretory protein (CCSP) administration in preterm infants with or at risk of respiratory distress syndrome.</a> Cochrane Database Syst. Rev. 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Genet. 20, R87-R92 (2011).</li><li>Roybal, J. L., Santore, M. T., Flake, A. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stem+cell+and+genetic+therapies+for+the+fetus.">Stem cell and genetic therapies for the fetus.</a> Semin Fetal Neonatal Med. 15, 46-51 (2010).</li><li>Peebles, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Widespread+and+efficient+marker+gene+expression+in+the+airway+epithelia+of+fetal+sheep+after+minimally+invasive+tracheal+application+of+recombinant+adenovirus+in+utero.">Widespread and efficient marker gene expression in the airway epithelia of fetal sheep after minimally invasive tracheal application of recombinant adenovirus in utero.</a> Gene Ther. 11, 70-708 (2004).</li><li>Deprest, J., Gratacos, E., Nicolaides, K. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fetoscopic+tracheal+occlusion+(FETO)+for+severe+congenital+diaphragmatic+hernia:+evolution+of+a+technique+and+preliminary+results.">Fetoscopic tracheal occlusion (FETO) for severe congenital diaphragmatic hernia: evolution of a technique and preliminary results.</a> Ultrasound Obstet. Gynecol. 24, 121-126 (2004).</li><li>Buckley, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intra-amniotic+delivery+of+CFTR-expressing+adenovirus+does+not+reverse+cystic+fibrosis+phenotype+in+inbred+CFTR-knockout+mice.">Intra-amniotic delivery of CFTR-expressing adenovirus does not reverse cystic fibrosis phenotype in inbred CFTR-knockout mice.</a> Mol. Ther. 16, 819-824 (2008).</li><li>Davies, L. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adenovirus-mediated+in+utero+expression+of+CFTR+does+not+improve+survival+of+CFTR+knockout+mice.">Adenovirus-mediated in utero expression of CFTR does not improve survival of CFTR knockout mice.</a> Mol. Ther. 16, 812-818 (2008).</li><li>Mitchell, M., Jerebtsova, M., Batshaw, M. L., Newman, K., Ye, X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Long-term+gene+transfer+to+mouse+fetuses+with+recombinant+adenovirus+and+adeno-associated+virus+(AAV)+vectors.">Long-term gene transfer to mouse fetuses with recombinant adenovirus and adeno-associated virus (AAV) vectors.</a> Gene Ther. 7, 1986-1992 (2000).</li><li>Henriques-Coelho, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeted+gene+transfer+to+fetal+rat+lung+interstitium+by+ultrasound-guided+intrapulmonary+injection.">Targeted gene transfer to fetal rat lung interstitium by ultrasound-guided intrapulmonary injection.</a> Mol. Ther. 15, 340-347 (2007).</li><li>Toelen, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fetal+gene+transfer+with+lentiviral+vectors:+long-term+in+vivo+follow-up+evaluation+in+a+rat+model.">Fetal gene transfer with lentiviral vectors: long-term in vivo follow-up evaluation in a rat model.</a> Am J Obstet Gynecol. 196, e1-e6 (2007).</li><li>Waddington, S. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Long-term+transgene+expression+by+administration+of+a+lentivirus-based+vector+to+the+fetal+circulation+of+immuno-competent+mice.">Long-term transgene expression by administration of a lentivirus-based vector to the fetal circulation of immuno-competent mice.</a> Gene Ther. 10, 1234-1240 (2003).</li><li>Waddington, S. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Permanent+phenotypic+correction+of+hemophilia+B+in+immunocompetent+mice+by+prenatal+gene+therapy.">Permanent phenotypic correction of hemophilia B in immunocompetent mice by prenatal gene therapy.</a> Blood. 104, 2714-2721 (2004).</li><li>Senoo, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adenovirus-mediated+in+utero+gene+transfer+in+mice+and+guinea+pigs:+tissue+distribution+of+recombinant+adenovirus+determined+by+quantitative+TaqMan-polymerase+chain+reaction+assay.">Adenovirus-mediated in utero gene transfer in mice and guinea pigs: tissue distribution of recombinant adenovirus determined by quantitative TaqMan-polymerase chain reaction assay.</a> Mol. Genet. Metab. 69, 269-276 (2000).</li><li>Carlon, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Efficient+gene+transfer+into+the+mouse+lung+by+fetal+intratracheal+injection+of+rAAV2/6.2.">Efficient gene transfer into the mouse lung by fetal intratracheal injection of rAAV2/6.2.</a> Mol. Ther. 18, 2130-2138 (2010).</li><li>Schmiedl, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lipopolysaccharide-induced+injury+is+more+pronounced+in+fetal+transgenic+ErbB4-deleted+lungs.">Lipopolysaccharide-induced injury is more pronounced in fetal transgenic ErbB4-deleted lungs.</a> Am. J. Physiol. Lung Cell Mol Physiol. 301, L490-L499 (2011).</li><li>Buckley, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Factors+influencing+adenovirus-mediated+airway+transduction+in+fetal+mice.">Factors influencing adenovirus-mediated airway transduction in fetal mice.</a> Mol. Ther. 12, 484-492 (2005).</li></ol>

관심 없음 충돌이 선언 없습니다.

중요 단계 <ul><li> 그들은 새끼의 풍부한 수 (평균 쓰레기 크기 14.4 ± 1.8, 자신의 데이터)를 가지고 있기 때문에 우리가 함께 작동하도록 선택 마우스 스트레인 NMRI 마우스입니다 잘 개입을 용인하고 좋은 어머니의 특성을 갖추고 있습니다. </li><li> 만 외상을 유발하지 않고 거의 불가능 그렇지 않으면 재배치, 태아 머리가 아닌 어깨를 노출 원하는대로 자궁 벽과 태아 멤브레인을 통해 지갑 문자열?...

<table border="1"><tbody><tr><td> 시약의 이름 </td><td> 회사 </td><td> 카탈로그 번호 </td><td> 코멘트 (선택 사항) </td></tr><tr><td> NMRI 마우스 </td><td> 비어 르 Genest 세인트 섬, 프랑스 </td><td></td><td></td></tr><tr><td> Isoflurane </td><td> Isoba, Intervet / Schering-북두칠성 동물 건강, 밀턴 케인즈, 영국 </td><td></td><td></td></tr><tr><td> Prolene 6-0 </td><td> Ethicon, Groot Bijgaarden, 벨기에 </td><td></td><td></td></tr><tr><td> Vicryl 5-0 </td><td> Ethicon, Groot Bijgaarden, 벨기에 </td><td></td><td></td></tr><tr><td> 50 μl 해밀턴 유리 주사기, 모델 1710.5 TLLX SYR </td><td> 해밀턴, 리노, 네바다, 미국 </td><td> 5495-20 </td><td></td></tr><tr><td> 30g의 날카로운 바늘 </td><td> 해밀턴, 리노, 네바다, 미국 </td><td> 7762-03 </td><td></td></tr><tr><td> 2퍼센트 xylocaine </td><td> 아스트라 제 네 카, Zoetermeer, 네덜란드 </td><td></td><td></td></tr></tbody></table>

a novel surgical approach for intratracheal administration of bioactive agents in a fetal mouse model

세포, 유전자 또는 pharmacologic 요원이 태아 폐 배달 유전자와 획득 질병의 다양한 새로운 치료 전략을위한 기반을 제공 할 수 있습니다. 이외에도 단기 유전자 발현이나 약리 개입이 치료 효과를 달성하기에 충분한 전달 유전자, 여러 가지 비 상속 perinatal 조건의 장기 표현에 대한 요구가있는 선천성 또는 상속 이상에서이에 대한 미래의 징후로 간주됩니다 접근 방식의 종류. 단기 태아 치료의 응용 프로그램에 대한 후보 질병은 신생아 호흡 곤란 증후군의 1,2 또는 신생아 폐 3 hyperoxic 부상의 원인이 계면 활성제 단백질 B의 과도 신생아 결핍이 될 수 있습니다. 영구 치료 교정하기위한 후보 질병은 낭포 성 섬유증 (CF) 4, 계면 활성제의 결함 5 α1-antitrypsin 결핍증 (6)의 유전자 변형입니다. &lt;P 클래스는 = &quot;jove_content&quot;&gt; 일반적으로, 태아 유전자 치료의 중요한 장점은 따라서 개인에 치유 할 수없는 손상을 방지, 환자의 임상 발현 이전에 또는 초기 개발에 치료 개입을 시작하는 능력입니다. 태아에 더 효율적인 유전자 나 줄기 세포 전송을 허용 할 수 성인 기관, 비교 또한, 태아 기관은 증가 세포 증식 속도를 갖추고 있습니다. 또한, 자궁 유전자 전달에 개인의 면역 체계가 완전히 성숙하지 않을 때 수행됩니다. 따라서, 올바른 버전이 아닌 기능이나 결석 단백질의 heterologous 셀이나 보완의 이식은 최근 세포와 유전자를 모두 치료 7의 경우로 입증 된 셀, 벡터 또는 transgene 제품에 면역 sensitization을 야기해서는 안됩니다 . 본 연구에서, 우리는 직접 마우스 m의 태아 기관을 타겟팅 할 가능성을 조사odel. 이 절차는 토끼와 양 팔, 심지어는 임상 설정 9에서와 같이 큰 동물 모델에서 사용하지만, 마우스 모델에서 이전에 수행되지 날짜로되어 있습니다. 등 CF와 같은 유전 질환에 대한 태아 유전자 치료의 가능성을 연구 할 때 마우스 모델 때문에 다른 유전자 변형 마우스 변종, 잘 문서화 embryogenesis와 태아 개발, 덜 엄격한의 넓은 가용성의 증명 개념 첫째로 매우 유용합니다 윤리 규정, 짧은 회임과 대형 쓰레기 크기입니다. 다른 액세스 경로가 간 양수 주입 10-12, 난황 주머니 선박 15,16 또는 배꼽 정맥 17로 (초음파 - 가이드) intrapulmonary 주입 13,14 및 정맥 주사 관리를 포함하여 태아 쥐 폐를 타겟으로 설명되어 있습니다. 우리 소설 수술은 직접 수있는 태아 마우스 기관으로 선택하는 에이전트를 주입 연구자 수기존의 기술 18보다기도에 더 효율적 제공을위한.

Watch this Scientific Journal Video about A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model at JoVE.com

A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model

우리는 마우스 태아에 bioactive 대리인의 intratracheal 관리에 대한 새로운 수술 방법을 개발했습니다. 배달 경로는 일반적으로 사용되는 내부 - 양수 주입보다 태아 마우스 폐를 타겟으로 더 효율적입니다. 이 절차는 마우스 모델에서 설명되지 않은 날짜로되어 있습니다.

태아 마우스 모델에서 Bioactive 에이전트의 Intratracheal 관리를위한 소설 외과 접근

Prenatal pulmonary delivery of cells, genes or pharmacologic agents could provide the basis for new therapeutic strategies for a variety of genetic and ...

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Research

JoVE Journal

Medicine

16.3K 조회수.  KU Leuven. 우리는 마우스 태아에 bioactive 대리인의 intratracheal 관리에 대한 새로운 수술 방법을 개발했습니다. 배달 경로는 일반적으로 사용되는 내부 - 양수 주입보다 태아 마우스 폐를 타겟으로 더 효율적입니다. 이 절차는 마우스 모델에서 설명되지 않은 날짜로되어 있습니다.

비디오: A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model

Assessing Teratogenic Changes in a Zebrafish Model of Fetal Alcohol Exposure

Fetal alcohol syndrome (FAS) is a severe manifestation of embryonic exposure to ethanol. It presents with characteristic defects to the face and organs, including mental retardation due to disordered and damaged brain development. Fetal alcohol spectrum disorder (FASD) is a term used to cover a continuum of birth defects that occur due to maternal alcohol consumption, and occurs in approximately 4% of children born in the United States. With 50% of child-bearing age women reporting consumption of alcohol, and half of all pregnancies being unplanned, unintentional exposure is a continuing issue2. In order to best understand the damage produced by ethanol, plus produce a model with which to test potential interventions, we developed a model of developmental ethanol exposure using the zebrafish embryo. Zebrafish are ideal for this kind of teratogen study3-8. Each pair lays hundreds of eggs, which can then be collected without harming the adult fish. The zebrafish embryo is transparent and can be readily imaged with any number of stains. Analysis of these embryos after exposure to ethanol at different doses and times of duration and application shows that the gross developmental defects produced by ethanol are consistent with the human birth defect. Described here are the basic techniques used to study and manipulate the zebrafish FAS model.

In order to understand the molecular mechanisms of the ethanol-induced developmental damage, we have developed a zebrafish model of ethanol exposure and are exploring the physical, cellular, and genetic alterations that occur after ethanol exposure1. We then seek to find potential interventions and rapidly test them in this animal model.

태아 알코올 노출의 Zebrafish 모델에서 Teratogenic 변경 사항 평가

Fetal alcohol syndrome (FAS) is a severe manifestation of embryonic exposure to ethanol. It presents with characteristic defects to the face and organs, ...

연구

의학

A Mouse Tumor Model of Surgical Stress to Explore the Mechanisms of Postoperative Immunosuppression and Evaluate Novel Perioperative Immunotherapies

Surgical resection is an essential treatment for most cancer patients, but surgery induces dysfunction in the immune system and this has been linked to the development of metastatic disease in animal models and in cancer patients. Preclinical work from our group and others has demonstrated a profound suppression of innate immune function, specifically NK cells in the postoperative period and this plays a major role in the enhanced development of metastases following surgery. Relatively few animal studies and clinical trials have focused on characterizing and reversing the detrimental effects of cancer surgery. Using a rigorous animal model of spontaneously metastasizing tumors and surgical stress, the enhancement of cancer surgery on the development of lung metastases was demonstrated. In this model, 4T1 breast cancer cells are implanted in the mouse mammary fat pad. At day 14 post tumor implantation, a complete resection of the primary mammary tumor is performed in all animals. A subset of animals receives additional surgical stress in the form of an abdominal nephrectomy. At day 28, lung tumor nodules are quantified. When immunotherapy was given immediately preoperatively, a profound activation of immune cells which prevented the development of metastases following surgery was detected. While the 4T1 breast tumor surgery model allows for the simulation of the effects of abdominal surgical stress on tumor metastases, its applicability to other tumor types needs to be tested. The current challenge is to identify safe and promising immunotherapies in preclinical mouse models and to translate them into viable perioperative therapies to be given to cancer surgery patients to prevent the recurrence of metastatic disease.

A mouse tumor model of surgical stress is used to explore how postoperative immune suppression promotes metastatic disease and to evaluate immunostimulatory perioperative therapies.

수술 후 면역 억제의 메커니즘을 탐색 소설 수술 전후 면역 요법을 평가하기 위해 수술 스트레스의 마우스 종양 모델

Surgical resection is an essential treatment for most cancer patients, but surgery induces dysfunction in the immune system and this has been linked to ...

A Mouse Fetal Skin Model of Scarless Wound Repair

Early in utero, but not in postnatal life, cutaneous wounds undergo regeneration and heal without formation of a scar. Scarless fetal wound healing occurs across species but is age dependent. The transition from a scarless to scarring phenotype occurs in the third trimester of pregnancy in humans and around embryonic day 18 (E18) in mice. However, this varies with the size of the wound with larger defects generating a scar at an earlier gestational age. The emergence of lineage tracing and other genetic tools in the mouse has opened promising new avenues for investigation of fetal scarless wound healing. However, given the inherently high rates of morbidity and premature uterine contraction associated with fetal surgery, investigations of fetal scarless wound healing in vivo require a precise and reproducible surgical model. Here we detail a reliable model of fetal scarless wound healing in the dorsum of E16.5 (scarless) and E18.5 (scarring) mouse embryos.

During mammalian development, early gestational skin wounds heal without a scar. Here we detail a reliable and reproducible model of fetal scarless wound healing in the cutaneous dorsum of E16.5 (scarless) and E18.5 (scarring) mouse embryos.

흉터 상처 수리의 마우스 태아의 피부 모델

Early in utero, but not in postnatal life, cutaneous wounds undergo regeneration and heal without formation of a scar. Scarless fetal wound healing occurs ...

The Mouse Round-window Approach for Ototoxic Agent Delivery: A Rapid and Reliable Technique for Inducing Cochlear Cell Degeneration

Investigators have utilized a wide array of animal models and investigative techniques to study the mammalian auditory system. Much of the basic research involving the cochlea and its associated neural pathways entails exposure of model cochleae to a variety of ototoxic agents. This allows investigators to study the effects of targeted damage to cochlear structures, and in some cases, the self-repair or regeneration of those structures. Various techniques exist for delivery of ototoxic agents to the cochlea. When selecting a particular technique, investigators must consider a number of factors, including the induction of inadvertent systemic toxicity, the amount of cochlear damage produced by the surgical procedure itself, the type of lesion desired, animal survivability, and reproducibility/reliability of results. Currently established techniques include parenteral injection, intra-peritoneal injection, trans-tympanic injection, endolymphatic sac injection, and cochleostomy with perilymphatic perfusion. Each of these methods has been successfully utilized and is well described in the literature; yet, each has various shortcomings. Here, we present a technique for topical application of ototoxic agents directly to the round window niche. This technique is non-invasive to inner ear structures, produces rapid onset of reliably targeted lesions, avoids systemic toxicity, and allows for an intra-animal control (the contra-lateral ear). Results stemming from this approach have helped deeper understanding of auditory pathophysiology, cochlear cell degeneration, and regenerative capacity in response to an acute injury. Future investigations may use this method to conduct interventional studies involving gene therapy and stem cell transplantation to combat hearing loss.

Various methods exist for introducing ototoxic agents to the cochleae of animal models. Presented is a surgical protocol for delivery of ototoxic agents to the round window niche. The procedure is reliable, creates targeted intra-cochlear lesions, and avoids mechanical damage to the microarchitecture. Examination of cochlear self-repair/regeneration is possible.

인공 와우 세포 변성을 유도하기위한 신속하고 신뢰할 수있는 기술 : Ototoxic 에이전트 배달을 위해 마우스 라운드 창 접근

Investigators have utilized a wide array of animal models and investigative techniques to study the mammalian auditory system. Much of the basic research ...

A Novel Murine Model of Arteriovenous Fistula Failure: The Surgical Procedure in Detail

The arteriovenous fistula (AVF) still suffers from a high number of failures caused by insufficient remodeling and intimal hyperplasia from which the exact pathophysiology remains unknown. In order to unravel the pathophysiology a murine model of AVF-failure was developed in which the configuration of the anastomosis resembles the preferred situation in the clinical setting. A model was described in which an AVF is created by connecting the venous end of the branch of the external jugular vein to the side of the common carotid artery using interrupted sutures. At a histological level, we observed progressive stenotic intimal lesions in the venous outflow tract that is also seen in failed human AVFs. Although this procedure can be technically challenging due to the small dimensions of the animal, we were able to achieve a surgical success rate of 97% after sufficient training. The key advantage of a murine model is the availability of transgenic animals. In view of the different proposed mechanisms that are responsible for AVF failure, disabling genes that might play a role in vascular remodeling can help us to unravel the complex pathophysiology of AVF failure.

Here we present a murine model of arteriovenous fistula (AVF) failure in which a clinically relevant anastomotic configuration is incorporated. This model can be used to study the pathophysiology and to test possible therapeutic interventions.

동정맥루 실패의 소설 쥐 모델 : 세부 수술

The arteriovenous fistula (AVF) still suffers from a high number of failures caused by insufficient remodeling and intimal hyperplasia from which the ...

Surgical Approach for Middle Cerebral Artery Occlusion and Reperfusion Induced Stroke in Mice

Stroke is a leading cause of death worldwide and continues to be one of the major causes of long-term adult disabilities. About 87% of strokes are ischemic in origin and occur in the territory of the middle cerebral artery (MCA). Currently the only Food and Drug Administration (FDA) approved drug for the treatment of this devastating disease is tissue plasminogen activator (tPA). However, tPA has a small therapeutic window for administration (3 - 6 hr), and is only effective in 4% of the patients who actually receive it. Current research focuses on understanding the pathophysiology of stroke in order to find potential therapeutic targets. Thus, reliable models are crucial, and the MCA occlusion (MCAo) model (also termed the intraluminal filament or suture model) is deemed to be the most clinically relevant surgical model of ischemic stroke, and is fairly non-invasive and easily reproducible. Typically the MCAo model is used with rodents, especially with mice due to all the genetic variations available for this species. Here we describe (and present in the video) how to successfully perform the MCAo model (with reperfusion) in mice to generate reliable and reproducible data.

In order to understand the pathophysiology of stroke, it is important to use reliable models. This paper will describe one of the most frequently used stroke models in mice, termed the middle cerebral artery occlusion (MCAo) model (also termed the intraluminal filament or suture model) with reperfusion.

마우스의 중간 대뇌 동맥 폐색 및 재관류 유도 스트로크에 대한 수술 적 접근

Stroke is a leading cause of death worldwide and continues to be one of the major causes of long-term adult disabilities. About 87% of strokes are ...

A Novel Approach for the Administration of Medications and Fluids in Emergency Scenarios and Settings

The available routes of administration commonly used for medications and fluids in the acute care setting are generally limited to oral, intravenous, or intraosseous routes, but in many patients, particularly in the emergency or critical care settings, these routes are often unavailable or time-consuming to access. A novel device is now available that offers an easy route for administration of medications or fluids via rectal mucosal absorption (also referred to as proctoclysis in the case of fluid administration and subsequent absorption). Although originally intended for the palliative care market, the utility of this device in the emergency setting has recently been described. Specifically, reports of patients being treated for dehydration, alcohol withdrawal, vomiting, fever, myocardial infarction, hyperthyroidism, and cardiac arrest have shown success with administration of a wide variety of medications or fluids (including water, aspirin, lorazepam, ondansetron, acetaminophen, methimazole, and buspirone). Device placement is straightforward, and based on the observation of expected effects from the medication administrations, absorption is rapid. The rapidity of absorption kinetics are further demonstrated in a recent report of the measurement of phenobarbital pharmacokinetics. We describe here the placement and use of this device, and demonstrate methods of pharmacokinetic measurements of medications administered by this method.

This study presents a novel device that offers an easy route to quickly provide medications and fluids in patients with limited or difficult IV access. This small-diameter device is placed in the distal third of the rectum, allowing for ongoing medication and fluids administration.

The available routes of administration commonly used for medications and fluids in the acute care setting are generally limited to oral, intravenous, or ...

Use of a Central Venous Line for Fluids, Drugs and Nutrient Administration in a Mouse Model of Critical Illness

This protocol describes a centrally catheterized mouse model of prolonged critical illness. We combine the cecal ligation and puncture method to induce sepsis with the use of a central venous line for fluids, drugs and nutrient administration to mimic the human clinical setting. Critically ill patients require intensive medical support in order to survive. While the majority of patients will recover within a few days, about a quarter of the patients need prolonged intensive care and are at high risk of dying from non-resolving multiple organ failure. Furthermore, the prolonged phase of critical illness is hallmarked by profound muscle weakness, and endocrine and metabolic changes, of which the pathogenesis is currently incompletely understood. The most widely used animal model in critical care research is the cecal ligation and puncture model to induce sepsis. This is a very reproducible model, with acute inflammatory and hemodynamic changes similar to human sepsis, which is designed to study the acute phase of critical illness. However, this model is hallmarked by a high lethality, which is different from the clinical human situation, and is not developed to study the prolonged phase of critical illness. Therefore, we adapted the technique by placing a central venous catheter in the jugular vein allowing us to administer clinically relevant supportive care, to better mimic the human clinical situation of critical illness. This mouse model requires an extensive surgical procedure and daily intensive care of the animals, but it results in a relevant model of the acute and prolonged phase of critical illness.

This protocol describes a centrally catheterized mouse model of prolonged critical illness. We combine the cecal ligation and puncture method to induce sepsis with the use of a central venous line for fluids, drugs and nutrient administration to mimic the human clinical setting.

위독한 병의 마우스 모델에서 유체, 약물 및 영양 관리를위한 중심 정맥 라인의 사용

This protocol describes a centrally catheterized mouse model of prolonged critical illness. We combine the cecal ligation and puncture method to induce ...

Cardiopulmonary Bypass in a Mouse Model: A Novel Approach

As prolonged cardiopulmonary bypass becomes more essential during cardiac interventions, an increasing clinical demand arises for procedure optimization and for minimizing organ damage resulting from prolonged extracorporal circulation. The goal of this paper was to demonstrate a fully functional and clinically relevant model of cardiopulmonary bypass in a mouse. We report on the device design, perfusion circuit optimization, and microsurgical techniques. This model is an acute model, which is not compatible with survival due to the need for multiple blood drawings. Because of the range of tools available for mice (e.g., markers, knockouts, etc.), this model will facilitate investigation into the molecular mechanisms of organ damage and the effect of cardiopulmonary bypass in relation to other comorbidities.

This paper describes how to perform cardiopulmonary bypass in mice. This novel model will facilitate the investigation of the molecular mechanisms involved in organ damage.

마우스 모델에서 심폐 바이패스: 새로운 접근

As prolonged cardiopulmonary bypass becomes more essential during cardiac interventions, an increasing clinical demand arises for procedure optimization ...

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.

Orthotopic의 쥐 모델 간 이식 Suprahepatic 베 나 정 맥 재건에 대 한 새로운 자석 문 합 기술을 사용 하 여

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