우리는 친절하게 혐기성 챔버의 사진을 제공 수줍어 연구소에게 감사의 말씀을 전합니다. 이 작품은 건강 보조금 DK087763 (SMM) 및 STEP / HHMI 교육 과정 개발 원정대 (ANE)의 국립 연구소에 의해 지원되었다.

<ol>
	<li>Hall, I. C., O'Toole, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intestinal+flora+in+new-borin+infants+-+With+a+description+of+a+new+pathogenic+anaerobe,+Bacillus+difficilis.">Intestinal flora in new-borin infants - With a description of a new pathogenic anaerobe, Bacillus difficilis.</a> Am. J. Dis. Child. 49, 390-402 (1935).</li><li>Tedesco, F. J., Barton, R. W., Alpers, D. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clindamycin-Associated+Colitis+-+Prospective+Study.">Clindamycin-Associated Colitis - Prospective Study.</a> Ann. Intern. Med. 81, 429-433 (1974).</li><li>Gerding, D. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clostridium+difficile+30+years+on:+what+has,+or+has+not,+changed+and+why.">Clostridium difficile 30 years on: what has, or has not, changed and why.</a> Int. J. Antimicrob. Agents. 33, 2-8 (2009).</li><li>Gerding, D. N., Muto, C. A., Owens, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Treatment+of+Clostridium+difficile+infection.">Treatment of Clostridium difficile infection.</a> Clin. Infect. Dis. 46, 32-42 (2008).</li><li>Dubberke, E. R., Olsen, M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Burden+of+Clostridium+difficile+on+the+healthcare+system.">Burden of Clostridium difficile on the healthcare system.</a> Clin. Infect. Dis. 55, 88-92 (2012).</li><li>Bouza, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Consequences+of+Clostridium+difficile+infection:+understanding+the+healthcare+burden.">Consequences of Clostridium difficile infection: understanding the healthcare burden.</a> Clin. Microbiol. Infect. 18, 5-12 (2012).</li><li>Peery, A. F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Burden+of+gastrointestinal+disease+in+the+United+States:+2012+update.">Burden of gastrointestinal disease in the United States: 2012 update.</a> Gastroenterology. 143, 1171-1173 (2012).</li><li>Deakin, L. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Clostridium+difficile+spo0A+gene+is+a+persistence+and+transmission+factor.">The Clostridium difficile spo0A gene is a persistence and transmission factor.</a> Infect. Immun. 80, 2704-2711 (2012).</li><li>Drasar, B. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cultivation+of+anaerobic+intestinal+bacteria.">Cultivation of anaerobic intestinal bacteria.</a> J. Pathol. Bacteriol. 94, 417-427 (1967).</li><li>Leach, P. A., Bullen, J. J., Grant, I. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anaerobic+CO+2+cabinet+for+the+cultivation+of+strict+anerobes.">Anaerobic CO 2 cabinet for the cultivation of strict anerobes.</a> Appl. Microbiol. 22, 824-827 (1971).</li><li>Killgore, G. E., Starr, S. E., Del Bene, ., Whaley, V. E., N, D., Dowell, V. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+three+anaerobic+systems+for+the+isolation+of+anaerobic+bacteria+from+clinical+specimens.">Comparison of three anaerobic systems for the isolation of anaerobic bacteria from clinical specimens.</a> Am. J. Clin. Pathol. 59, 552-559 (1973).</li><li>Bacic, M. K., Smith, C. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laboratory+maintenance+and+cultivation+of+bacteroides+species.">Laboratory maintenance and cultivation of bacteroides species.</a> Curr. Protoc. Microbiol. Chapter 13, Unit 13C 11 (2008).</li><li>Doan, N., Contreras, A., Flynn, J., Morrison, J., Slots, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Proficiencies+of+three+anaerobic+culture+systems+for+recovering+periodontal+pathogenic+bacteria.">Proficiencies of three anaerobic culture systems for recovering periodontal pathogenic bacteria.</a> J. Clin. Microbiol. 37, 171-174 (1999).</li><li>Socransky, S., Macdonald, J. B., Sawyer, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+cultivation+of+Treponema+microdentium+as+surface+colonies.">The cultivation of Treponema microdentium as surface colonies.</a> Arch. Oral. Biol. 1, 171-172 (1959).</li><li>George, W. L., Sutter, V. L., Citron, D., Finegold, 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=Selective+and+differential+medium+for+isolation+of+Clostridium+difficile.">Selective and differential medium for isolation of Clostridium difficile.</a> J. Clin. Microbiol. 9, 214-219 (1979).</li><li>Wilson, K. H., Silva, J., Fekety, F. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Suppression+of+Clostridium+difficile+by+normal+hamster+cecal+flora+and+prevention+of+antibiotic-associated+cecitis.">Suppression of Clostridium difficile by normal hamster cecal flora and prevention of antibiotic-associated cecitis.</a> Infect. Immun. 34, 626-628 (1981).</li><li>Wilson, K. H., Kennedy, M. J., Fekety, F. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Use+of+sodium+taurocholate+to+enhance+spore+recovery+on+a+medium+selective+for+Clostridium+difficile.">Use of sodium taurocholate to enhance spore recovery on a medium selective for Clostridium difficile.</a> J. Clin. Microbiol. 15, 443-446 (1982).</li><li>Bliss, D. Z., Johnson, S., Clabots, C. R., Savik, K., Gerding, D. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+cycloserine-cefoxitin-fructose+agar+(CCFA)+and+taurocholate-CCFA+for+recovery+of+Clostridium+difficile+during+surveillance+of+hospitalized+patients.">Comparison of cycloserine-cefoxitin-fructose agar (CCFA) and taurocholate-CCFA for recovery of Clostridium difficile during surveillance of hospitalized patients.</a> Diagn. Microbiol. Infect. Dis. 29, 1-4 (1997).</li><li>Marler, L. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+five+cultural+procedures+for+isolation+of+Clostridium+difficile+from+stools.">Comparison of five cultural procedures for isolation of Clostridium difficile from stools.</a> J. Clin. Microbiol. 30, 514-516 (1992).</li><li>Sorg, J. A., Dineen, S. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laboratory+maintenance+of+Clostridium+difficile.">Laboratory maintenance of Clostridium difficile.</a> Curr. Protoc. Microbiol. Chapter 9, Unit 9A 1 (2009).</li><li>Bouillaut, L., McBride, S. M., Sorg, 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=Genetic+manipulation+of+Clostridium+difficile.">Genetic manipulation of Clostridium difficile.</a> Curr. Protoc. Microbiol. Chapter 9, Unit 9A 2 (2011).</li><li>Lemee, L., Pons, J. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multilocus+sequence+typing+for+Clostridium+difficile.">Multilocus sequence typing for Clostridium difficile.</a> Methods. Mol. Biol. 646, 77-90 (2010).</li><li>Shanholtzer, C. J., Peterson, L. R., Olson, M. N., Gerding, D. N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Prospective+study+of+gram-stained+stool+smears+in+diagnosis+of+Clostridium+difficile+colitis.">Prospective study of gram-stained stool smears in diagnosis of Clostridium difficile colitis.</a> J. Clin. Microbiol. 17, 906-908 (1983).</li><li>Smith, C. J., Markowitz, S. M., Macrina, F. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transferable+tetracycline+resistance+in+Clostridium+difficile.">Transferable tetracycline resistance in Clostridium difficile.</a> Antimicrob. Agents Chemother. 19, 997-1003 (1981).</li><li>Permpoonpattana, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surface+layers+of+Clostridium+difficile+endospores.">Surface layers of Clostridium difficile endospores.</a> J. Bacteriol. 193, 6461-6470 (2011).</li><li>Putnam, E. E., Nock, A. M., Lawley, T. D., Shen, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SpoIVA+and+SipL+are+Clostridium+difficile+spore+morphogenetic+proteins.">SpoIVA and SipL are Clostridium difficile spore morphogenetic proteins.</a> J. Bacteriol. , (2013).</li><li>Burns, D. A., Minton, N. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sporulation+studies+in+Clostridium+difficile.">Sporulation studies in Clostridium difficile.</a> J. Microbiol. Methods. 87, 133-138 (2011).</li><li>Perez, J., Springthorpe, V. S., Sattar, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clospore:+a+liquid+medium+for+producing+high+titers+of+semi-purified+spores+of+Clostridium+difficile.">Clospore: a liquid medium for producing high titers of semi-purified spores of Clostridium difficile.</a> J. AOAC Int. 94, 618-626 (2011).</li><li>Sorg, J. A., Sonenshein, A. 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관심 없음 충돌 선언하지 않습니다.

여기에서 설명하는 방법은 C의 간단하고 신속하게 복구 할 수 인간, 마우스, 햄스터, C. 등의 장기 저장을 포함한 분변 시료의 다양한에서 디피 글리세롤 또는 포자 주식으로 어울리지. C. 어울리지 경작하기 어려운 유기체가 될 수 있지만주의 혐기성 환경의 유지 보수 및 무균 기술의 응용 프로그램은 강력한 성장과 오염의 감소를 제공 할 수 있습니다. <p class="jove_step...

클로 스트 리듐 디피는 의무를 혐기성 미생물과 인간과 동물의 잠재적으로 치명적인 위장 병원체 그람 양성, 포자를 형성하는 박테리아입니다. 처음에는 신생아 1, C.에서 배설물 샘플에서 발견 공생 생물로 1935 년에 설명 어울리지는 나중에 항생제 치료 2와 관련된 위 막성 대장염의 원인 물질로 증명되었다. C.에게 남과 어울리지 않는 감염 (CDI)는 일반적으로 C에 대한 틈새 시장을 창조하는 정상 결장 식물의 중단 결과 항생제 치료가옵니다 어울리지 2 번창한다. C. 어울리지는 분변 - 경구 경로를 통해 휴면 포자로 전송 이후에 여러 가지 독소를 생성하고 심각한 질병 및 대장염 3을 일으킬 수있는 식물 세포를 생산, 위장 내에서 발아한다. CDI는 종종 기존의 치료와 이들의에 불응fections 자주 4를 반복합니다. 그 결과, CDI는 미국 5-7 의료 비용의 최대 48억달러에 대한 책임이 있습니다. C. 남과 어울리지 않는 환경에있는 산소도 낮은 수준에 매우 민감하다. C.에 대한 어울리지 않는 환경에서 지속하고 효율적으로 호스트에 호스트로부터 전송, 대사 적으로 비활성 포자의 형성이 중요 8입니다. 때문에 C.의 실험실 유지 및 조작 어울리지 이러한 기술은 혐기성 챔버의 사용을 필요로, 제어, 혐기성 환경이 필요합니다. 혐기성 챔버의 사용은 증가 된 회복 의무를 혐기성 9-11 단리 초래하였으며, 혐기성 분위기에서 수행 될 분자 기술의 수가 허용했다. C. 외에도 어울리지는 여기에 설명 된 혐기성 챔버의 사용 및 유지 보수가 적용됩니다같은 다른 클로스 트리 디움 종 (예를 들면 C. 퍼프 린 젠스), 다른 위장 종 (예를 들어 테로이 12 종) 및 치주 병원균 (예 Peptostreptococcus 종 13) 등의 의무를 혐기성 균에.

<table border="1">
	<tbody>
		<tr>
			<td>Name of Reagent/Material</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Proteose Peptone no. 2</td>
			<td>BD</td>
			<td>212120</td>
			<td></td>
		</tr>
		<tr>
			<td>Na2HPO4</td>
			<td>Fisher</td>
			<td>S373</td>
			<td></td>
		</tr>
		<tr>
			<td>KH2PO4</td>
			<td>Fisher</td>
			<td>BP362</td>
			<td></td>
		</tr>
		<tr>
			<td>NaCl</td>
			<td>Fisher</td>
			<td>S27</td>
			<td></td>
		</tr>
		<tr>
			<td>MgSO4 (anhydrous)</td>
			<td>Fisher</td>
			<td>M65</td>
			<td></td>
		</tr>
		<tr>
			<td>&#7429;-Fructose</td>
			<td>Fisher</td>
			<td>L96</td>
			<td></td>
		</tr>
		<tr>
			<td>Sodium taurocholate</td>
			<td>Sigma</td>
			<td>T4009</td>
			<td></td>
		</tr>
		<tr>
			<td>&#7429;-cycloserine</td>
			<td>Sigma</td>
			<td>C6880</td>
			<td></td>
		</tr>
		<tr>
			<td>Cefoxitin</td>
			<td>Fluka</td>
			<td>C4786</td>
			<td></td>
		</tr>
		<tr>
			<td>Brain heart infusion medium</td>
			<td>BD</td>
			<td>237300</td>
			<td></td>
		</tr>
		<tr>
			<td>Proteose Peptone</td>
			<td>BD</td>
			<td>211684</td>
			<td></td>
		</tr>
		<tr>
			<td>(NH4)2SO4</td>
			<td>Sigma</td>
			<td>A5132</td>
			<td></td>
		</tr>
		<tr>
			<td>Tris base</td>
			<td>Fisher</td>
			<td>BP152</td>
			<td></td>
		</tr>
		<tr>
			<td>Agar</td>
			<td>BD</td>
			<td>214010</td>
			<td></td>
		</tr>
		<tr>
			<td>L-cysteine</td>
			<td>Sigma</td>
			<td>C7755</td>
			<td></td>
		</tr>
		<tr>
			<td>BactoPeptone</td>
			<td>BD</td>
			<td>211684</td>
			<td></td>
		</tr>
		<tr>
			<td>Columbian sheep blood agar</td>
			<td>Fisher</td>
			<td>L21928</td>
			<td></td>
		</tr>
		<tr>
			<td>NaCl</td>
			<td>Fisher</td>
			<td>S27</td>
			<td></td>
		</tr>
		<tr>
			<td>KCl</td>
			<td>Fisher</td>
			<td>P217</td>
			<td></td>
		</tr>
		<tr>
			<td>Glycerol</td>
			<td>Fisher</td>
			<td>BP2291</td>
			<td></td>
		</tr>
		<tr>
			<td>Sterile inoculating loops</td>
			<td>Fisher</td>
			<td>22363596</td>
			<td></td>
		</tr>
		<tr>
			<td>Sterile swabs</td>
			<td>Fisher</td>
			<td>1495990</td>
			<td></td>
		</tr>
		<tr>
			<td>Coy Vinyl Anaerobic Chamber and Accessories</td>
			<td>Coy Laboratory Products, Inc</td>
			<td>Customer Specified</td>
			<td>These items are custom ordered per laboratory needs</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>Materials</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td>TCCFA agar 
			 
			Proteose peptone no. 2 (Difco) 40 g 
			Na2HPO4 5 g 
			KH2PO4 1 g 
			NaCl 2 g 
			MgSO4 (anhydrous) 0.1 g 
			Fructose 6 g 
			Agar 20 g 
			 
			Bring to 1 L with deionized water and autoclave at 121 &#176;C for 20 min to sterilize. 
			 
			After autoclaving, add: 
			10 ml of 10% (w/v) sodium taurocholate, filter-sterilized (dissolve in water; final concentration, 0.1%) 
			25 ml of 10 mg/ml &#7429;-cycloserine, filter-sterilized (dissolve in water; final concentration, 250 &#956;g/ml) 
			1.6 ml of 10 mg/ml cefoxitin, filter-sterilized (dissolve in water; final concentration, 16 &#956;g/ml) 
			 
			BHIS Medium 
			 
			Brain heart infusion 37 g 
			Yeast extract 5 g 
			 
			For plates, add 15 g agar. Bring to 1 L with deionized water and autoclave at 121 &#176;C for 20 min to sterilize. 
			 
			Optional (add after autoclaving): 
			 
			3 ml of 10% (w/v) L-cysteine (dissolve in water; final concentration, 0.03%) 
			10 ml of 10% (w/v) sodium taurocholate (dissolve in water; final concentration, 0.1%) 
			 
			SMC Sporulation Medium 
			 
			BactoPeptone 90 g 
			Protease peptone 5 g 
			(NH4)2SO4 1 g 
			Tris base 1.5 g 
			Agar 15 g 
			 
			Bring to 1 L with deionized water and autoclave at 121 &#176;C for 20 min to sterilize. 
			 
			Optional (add after autoclaving): 
			3 ml of 10% (w/v) L-cysteine (dissolve in water; final concentration, 0.03%) 
			 
			70:30 Medium 
			 
			BactoPeptone 63 g 
			Protease peptone 3.5 g 
			Brain heart infusion 11.1 g 
			Yeast extract 1.5 g 
			(NH4)2SO4 0.7 g 
			Tris base 1.06 g 
			 
			For plates, add 15 g agar. Bring to 1 L with deionized water and autoclave at 121 &#176;C for 20 min to sterilize. After autoclaving, add 3 ml of 10% (w/v) L-cysteine (final concentration, 0.03%). 
			 
			Blood agar 
			 
			The use of premade Columbia anaerobic sheep blood agar plates (Fisher Scientific, L21928)35 is recommended. 
			 
			1X Phosphate buffered saline (PBS) 
			 
			NaCl 8.01 g 
			KCl 0.2 g 
			Na2HPO4 1.44 g 
			KH2PO4 0.27 g 
			 
			Bring to 1 L with deionized water and adjust pH to 7.4 with HCl. Filter sterilize before use.</td>
		</tr>
	</tbody>
</table>

culturing and maintaining clostridium difficile in an anaerobic environment

클로 스트 리듐 디피 항생제 관련 설사 (AAD)의 주된 책임이며 중요한 병원 내 병원체 그람 양성, 혐기성, sporogenic 세균이다. C. 남과 어울리지 분리 및 배양하는 악명 어려운 환경에있는 산소도 낮은 수준에 매우 민감하다. 여기에, C.를 분리하는 방법 대변 ​​샘플에서 어울리지 이후에 배양 C. 장기 저장을위한 글리세롤 주식의 준비를위한 어울리지이되게됩니다. 현미경과 동물 연구 등의 다운 스트림 응용 프로그램의 다양한 실험실에서 포자 주식을 준비하고 열거하는 기술도 설명되어 있습니다. 이 기술은 최적의 C에 대한 적절한 조건을 보장하기 위해 일관성있는 혐기성 환경을 유지하는 혐기성 챔버를 필요로 남과 어울리지 성장. 우리는 CA없이 챔버 안팎으로 물질을 전달하기위한 프로토콜을 제공한다효율적이고 일관성있는 C.에 해당하는 혐기성 환경을 유지하기 위해 필요한 정기적 인 유지 보수에 대한 제안과 함께 중요한 산소 오염을 사용하여 남과 어울리지 재배.

C.의 예 BHIS 컬럼비아 혐기성 양의 혈액 한천 매체에 성장 어울리지는 그림 2에서 볼 수 있습니다. C. 어울리지는 평면이며 모두 미디어에 분명하다 지상 유리 외관을 가지고 불규칙한 식민지를 형성한다. 여기에, C.의 에리스로 마이신에 민감한 임상 분리 남과 어울리지 않는, 630E (30)는 37 ° C (그림 2A)에서 24 시간 동안, BHIS 한천, ?...

Watch this Scientific Journal Video about Culturing and Maintaining Clostridium difficile in an Anaerobic Environment at JoVE.com

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

클로 스트 리듐 디피는 엄격한 혐기성 미생물과 항생제 관련 설사 (AAD)를 일으키는 원인이되는 병원성 세균입니다. 여기서, 분리 배양 및 C를 유지하기위한 방법 어울리지 않는 식물 세포 및 포자가 설명되어 있습니다. 이 기술은 최적의 C에 대한 적절한 조건을 보장하기 위해 정기적 인 유지 보수를 필요로하는 혐기성 챔버를 필요로 남과 어울리지 재배.

배양 및 유지<em&gt; 클로 스트 리듐 디피</em&gt; 혐기성 환경에서

Clostridium  difficile is a Gram-positive, anaerobic, sporogenic bacterium  that is primarily responsible for antibiotic associated diarrhea (AAD) and is ...

culturing-maintaining-clostridium-difficile-an-anaerobic

Research

JoVE Journal

Immunology and Infection

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

38.4K 조회수.  Emory University School of Medicine.  클로 스트 리듐 디피는 엄격한 혐기성 미생물과 항생제 관련 설사 (AAD)를 일으키는 원인이되는 병원성 세균입니다. 여기서, 분리 배양 및 C를 유지하기위한 방법 어울리지 않는 식물 세포 및 포자가 설명되어 있습니다. 이 기술은 최적의 C에 대한 적절한 조건을 보장하기 위해 정기적 인 유지 보수를 필요로하는 혐기성 챔버를 필요?...

비디오: Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

Culturing Microglia from the Neonatal and Adult Central Nervous System

Microglia are the resident macrophage-like cells of the central nervous system (CNS) and, as such, have critically important roles in physiological and pathological processes such as CNS maturation in development, multiple sclerosis, and spinal cord injury. Microglia can be activated and recruited to action by neuronal injury or stimulation, such as axonal damage seen in MS or ischemic brain trauma resulting from stroke. These immunocompetent members of the CNS are also thought to have roles in synaptic plasticity under non-pathological conditions. We employ protocols for culturing microglia from the neonatal and adult tissues that are aimed to maximize the viable cell numbers while minimizing confounding variables, such as the presence of other CNS cell types and cell culture debris. We utilize large and easily discernable CNS components (e.g. cortex, spinal cord segments), which makes the entire process feasible and reproducible. The use of adult cells is a suitable alternative to the use of neonatal brain microglia, as many pathologies studied mainly affect the postnatal spinal cord. These culture systems are also useful for directly testing the effect of compounds that may either inhibit or promote microglial activation. Since microglial activation can shape the outcomes of disease in the adult CNS, there is a need for in vitro systems in which neonatal and adult microglia can be cultured and studied.

We outline methods for the efficient and quick isolation/culture of viable microglia from the neonatal cerebral cortex and adult spinal cord. The dissection and plating of cortical microglia can be accomplished within 90 minutes, with the subsequent microglial harvest taking place ~ 10 days following the initial dissection.

신생아와 성인 중추 신경계에서 배양 소교 세포

Microglia are the resident macrophage-like cells of the central nervous system (CNS) and, as such, have critically important roles in physiological and ...

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면역학 및 감염병학

Fluorescence in situ Hybridizations (FISH) for the Localization of Viruses and Endosymbiotic Bacteria in Plant and Insect Tissues

Fluorescence in situ hybridization (FISH) is a name given to a variety of techniques commonly used for visualizing gene transcripts in eukaryotic cells and can be further modified to visualize other components in the cell such as infection with viruses and bacteria. Spatial localization and visualization of viruses and bacteria during the infection process is an essential step that complements expression profiling experiments such as microarrays and RNAseq in response to different stimuli. Understanding the spatiotemporal infections with these agents complements biological experiments aimed at understanding their interaction with cellular components. Several techniques for visualizing viruses and bacteria such as reporter gene systems or immunohistochemical methods are time-consuming, and some are limited to work with model organisms&#160;and involve complex methodologies. FISH that targets RNA or DNA species in the cell is a relatively easy and fast method for studying spatiotemporal localization of genes and for diagnostic purposes. This method can be robust and relatively easy to implement when the protocols employ short hybridizing, commercially-purchased probes, which are not expensive. This is particularly robust when sample preparation, fixation, hybridization, and microscopic visualization do not involve complex steps. Here we describe a protocol for localization of bacteria and viruses in insect and plant tissues. The method is based on simple preparation, fixation, and hybridization of insect whole mounts and dissected organs or hand-made plant sections, with 20 base pairs short DNA probes conjugated to fluorescent dyes on their 5&#39; or 3&#39; ends. This protocol has been successfully applied to a number of insect and plant tissues, and can be used to analyze expression of mRNAs or other RNA or DNA species in the cell.

Fluorescence in situ Hybridizations FISH for the Localization of Viruses and Endosymbiotic Bacteria in Plant and Insect Tissues

We describe here a simple fluorescence in situ hybridization (FISH) method for the localization of viruses and bacteria in insect and plant tissues. This protocol can be extended for the visualization of mRNA in whole mount and microscopic sections.

형광<em&gt; 현장에서</em바이러스 및 식물과 곤충 조직에서 Endosymbiotic 박테리아의 지역화를위한&gt; 혼성화 (FISH)

Fluorescence in situ hybridization (FISH) is a name given to a variety of techniques commonly used for visualizing gene transcripts in eukaryotic cells ...

Using RNA-interference to Investigate the Innate Immune Response in Mouse Macrophages

Macrophages are key phagocytic innate immune cells. When macrophages encounter a pathogen, they produce antimicrobial proteins and compounds to kill the pathogen, produce various cytokines and chemokines to recruit and stimulate other immune cells, and present antigens to stimulate the adaptive immune response. Thus, being able to efficiently manipulate macrophages with techniques such as RNA-interference (RNAi) is critical to our ability to investigate this important innate immune cell. However, macrophages can be technically challenging to transfect and can exhibit inefficient RNAi-induced gene knockdown. In this protocol, we describe methods to efficiently transfect two mouse macrophage cell lines (RAW264.7 and J774A.1) with siRNA using the Amaxa Nucleofector 96-well Shuttle System and describe procedures to maximize the effect of siRNA on gene knockdown. Moreover, the described methods are adapted to work in 96-well format, allowing for medium and high-throughput studies. To demonstrate the utility of this approach, we describe experiments that utilize RNAi to inhibit genes that regulate lipopolysaccharide (LPS)-induced cytokine production.

In this protocol, we describe methods to efficiently transfect murine macrophage cell lines with siRNAs using the Amaxa Nucleofector 96-well Shuttle System, stimulate the macrophages with lipopolysaccharide, and monitor the effects on inflammatory cytokine production.

마우스 대 식세포의 타고난 면역 반응을 조사하기 위해 RNA 간섭을 사용하여

Macrophages are key phagocytic innate immune cells.  When macrophages encounter a pathogen, they produce antimicrobial proteins and compounds to kill the ...

Porphyromonas gingivalis as a Model Organism for Assessing Interaction of Anaerobic Bacteria with Host Cells

Anaerobic bacteria far outnumber aerobes in many human niches such as the gut, mouth, and vagina. Furthermore, anaerobic infections are common and frequently of indigenous origin. The ability of some anaerobic pathogens to invade human cells gives them adaptive measures to escape innate immunity as well as to modulate host cell behavior. However, ensuring that the anaerobic bacteria are live during experimental investigation of the events may pose challenges. Porphyromonas gingivalis, a Gram-negative anaerobe, is capable of invading a variety of eukaryotic non-phagocytic cells. This article outlines how to successfully culture and assess the ability of P. gingivalis to invade human umbilical vein endothelial cells (HUVECs). Two protocols were developed: one to measure bacteria that can successfully invade and survive within the host, and the other to visualize bacteria interacting with host cells. These techniques necessitate the use of an anaerobic chamber to supply P. gingivalis with an anaerobic environment for optimal growth.
The first protocol is based on the antibiotic protection assay, which is largely used to study the invasion of host cells by bacteria. However, the antibiotic protection assay is limited; only intracellular bacteria that are culturable following antibiotic treatment and host cell lysis are measured. To assess all bacteria interacting with host cells, both live and dead, we developed a protocol that uses fluorescent microscopy to examine host-pathogen interaction. Bacteria are fluorescently labeled with 2&#39;,7&#39;-Bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein acetoxymethyl ester (BCECF-AM) and used to infect eukaryotic cells under anaerobic conditions. Following fixing with paraformaldehyde and permeabilization with 0.2% Triton X-100, host cells are labeled with TRITC phalloidin and DAPI to label the cell cytoskeleton and nucleus, respectively. Multiple images taken at different focal points (Z-stack) are obtained for temporal-spatial visualization of bacteria. Methods used in this study can be applied to any cultivable anaerobe and any eukaryotic cell type.

Porphyromonas gingivalis as a Model Organism for Assessing Interaction of Anaerobic Bacteria with Host Cells

This article presents two protocols: one to measure anaerobic bacteria that can successfully invade and survive within the host, and the other to visualize anaerobic bacteria interacting with host cells. This study can be applied to any cultivable anaerobe and any eukaryotic cell type.

숙주 세포와 혐기성 세균의 상호 작용을 평가하기위한 모델 생물로 포피 진지 발리

Anaerobic bacteria far outnumber aerobes in many human niches such as the gut, mouth, and vagina. Furthermore, anaerobic infections are common and ...

Establishment of a High-throughput Setup for Screening Small Molecules That Modulate c-di-GMP Signaling in Pseudomonas aeruginosa

Bacterial resistance to traditional antibiotics has driven research attempts to identify new drug targets in recently discovered regulatory pathways. Regulatory systems that utilize intracellular cyclic di-GMP (c-di-GMP) as a second messenger are one such class of target. c-di-GMP is a signaling molecule found in almost all bacteria that acts to regulate an extensive range of processes including antibiotic resistance, biofilm formation and virulence. The understanding of how c-di-GMP signaling controls aspects of antibiotic resistant biofilm development has suggested approaches whereby alteration of the cellular concentrations of the nucleotide or disruption of these signaling pathways may lead to reduced biofilm formation or increased susceptibility of the biofilms to antibiotics. We describe a simple high-throughput bioreporter protocol, based on green fluorescent protein (GFP), whose expression is under the control of the c-di-GMP responsive promoter cdrA, to rapidly screen for small molecules with the potential to modulate c-di-GMP cellular levels in Pseudomonas aeruginosa (P. aeruginosa). This simple protocol can screen upwards of 3,500 compounds within 48 hours and has the ability to be adapted to multiple microorganisms.

Establishment of a High-throughput Setup for Screening Small Molecules That Modulate c-di-GMP Signaling in Pseudomonas aeruginosa

This article describes the high-throughput assay that has been successfully established to screen large libraries of small molecules for their potential ability to manipulate cellular levels of cyclic di-GMP in Pseudomonas aeruginosa, providing a new powerful tool for antibacterial drug discovery and compound testing.

변조 C 디 GMP가에서 시그널링 그건 작은 분자를 스크리닝하기위한 높은 처리량 설정 구축<em&gt; 녹농균</em

Bacterial resistance to traditional antibiotics has driven research attempts to identify new drug targets in recently discovered regulatory pathways. ...

Flow Cytometric Analysis of Particle-bound Bet v 1 Allergen in PM10

Flow cytometry is a method widely used to quantify suspended solids such as cells or bacteria in a size range from 0.5 to several tens of micrometers in diameter. In addition to a characterization of forward and sideward scatter properties, it enables the use of fluorescent labeled markers like antibodies to detect respective structures. Using indirect antibody staining, flow cytometry is employed here to quantify birch pollen allergen (precisely Bet v 1)-loaded particles of 0.5 to 10 &#181;m in diameter in inhalable particulate matter (PM10, particle size &#8804;10 &#181;m in diameter). PM10 particles may act as carriers of adsorbed allergens possibly transporting them to the lower respiratory tract, where they could trigger allergic reactions.
So far the allergen content of PM10 has been studied by means of enzyme linked immunosorbent assays (ELISAs) and scanning electron microscopy. ELISA measures the dissolved and not the particle-bound allergen. Compared to scanning electron microscopy, which can visualize allergen-loaded particles, flow cytometry may additionally quantify them. As allergen content of ambient air can deviate from birch pollen count, allergic symptoms might perhaps correlate better with allergen exposure than with pollen count. In conjunction with clinical data, the presented method offers the opportunity to test in future experiments whether allergic reactions to birch pollen antigens are associated with the Bet v 1 allergen content of PM10 particles &#62;0.5 &#181;m.

Here, we present a protocol to quantify allergen-loaded particles by flow cytometry. Ambient particulate matter particles may act as carriers of adsorbed allergens. We show here that flow cytometry, a method widely used to characterize suspended solids &#62;0.5 &#181;m in diameter, can be used to measure these allergen-loaded particles.

PM10의 입자 바인딩 베팅 1 절 알레르기의 유세포 분석

Flow cytometry is a method widely used to quantify suspended solids such as cells or bacteria in a size range from 0.5 to several tens of micrometers in ...

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291

Clostridium difficile is an anaerobic, gram-positive, spore-forming enteric pathogen that is associated with increasing morbidity and mortality and consequently poses an urgent threat to public health. Recurrence of a C. difficile infection (CDI) after successful treatment with antibiotics is high, occurring in 20-30% of patients, thus necessitating the discovery of novel therapeutics against this pathogen. Current animal models of CDI result in high mortality rates and thus do not approximate the chronic, insidious disease manifestations seen in humans with CDI. To evaluate therapeutics against C. difficile, a mouse model approximating human disease utilizing a clinically-relevant strain is needed. This protocol outlines the cefoperazone mouse model of CDI using a clinically-relevant and genetically-tractable strain, R20291. Techniques for clinical disease monitoring, C. difficile bacterial enumeration, toxin cytotoxicity, and histopathological changes throughout CDI in a mouse model are detailed in the protocol. Compared to other mouse models of CDI, this model is not uniformly lethal at the dose administered, allowing for the observation of a prolonged clinical course of infection concordant with the human disease. Therefore, this cefoperazone mouse model of CDI proves a valuable experimental platform to assess the effects of novel therapeutics on the amelioration of clinical disease and on the restoration of colonization resistance against C. difficile.

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291

This protocol outlines the cefoperazone mouse model of Clostridium difficile infection (CDI) using a clinically-relevant and genetically-tractable strain, R20291. Emphasis on clinical disease monitoring, C. difficile bacterial enumeration, toxin cytotoxicity, and histopathological changes throughout CDI in a mouse model are detailed in the protocol.

의 Cefoperazone 처리 된 마우스 모델 임상 관련<em&gt; 클로스 트리 디움 디피</em&gt; 스트레인 R20291

Clostridium difficile is an anaerobic, gram-positive, spore-forming enteric pathogen that is associated with increasing morbidity and mortality and ...

A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment

Assessment of antibiotic action with new drug development directed towards anaerobic bacteria is difficult and technically demanding. To gain insight into possible MOA, morphologic changes associated with antibiotic exposure can be visualized using scanning electron microscopy (SEM). Integrating SEM imaging with traditional kill curves may improve our insight into drug action and advance the drug development process. To test this premise, kill curves and SEM studies were conducted using drugs with known but different MOA (vancomycin and metronidazole). C. difficile cells (R20291) were grown with or without the presence of antibiotic for up to 48 h. Throughout the 48 h interval, cells were collected at multiple time points to determine antibiotic efficacy and for imaging on the SEM. Consistent with previous reports, vancomycin and metronidazole had significant bactericidal activity following 24 h of treatment as measured by colony-forming unit (CFU) counting. Using SEM imaging we determined that metronidazole had significant effects on cell length (&#62; 50% reduction in cell length for each antibiotic; P&#60; 0.05) compared to controls and vancomycin. While the phenotypic response to drug treatment has not been documented previously in this manner, they are consistent with the drug&#39;s MOA demonstrating the versatility and reliability of the imaging and measurements and the application of this technique for other experimental compounds.

A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment

Antibiotic efficacy is most commonly determined by conducting killing kinetic studies and measuring colony forming units (CFUs). By integrating scanning electron microscopy (SEM) with these standard methods, we can distinguish the pharmacological effects of treatment between different antibiotics.

형태 변화를 규명하기위한 프로토콜<em&gt; 클로스 트리 디움 디피 실</em&gt; 항생제 치료에 대한 반응

Assessment of antibiotic action with new drug development directed towards anaerobic bacteria is difficult and technically demanding. To gain insight into ...

A Protein Microarray Assay for Serological Determination of Antigen-specific Antibody Responses Following Clostridium difficile Infection

We provide a detailed overview of a novel high-throughput protein microarray assay for the determination of anti-Clostridium difficile antibody levels in human sera and in separate preparations of polyclonal intravenous immunoglobulin (IVIg). The protocol describes the methodological steps involved in sample preparation, printing of arrays, assay procedure, and data analysis. In addition, this protocol could be further developed to incorporate diverse clinical samples including plasma and cell culture supernatants. We show how protein microarray can be used to determine a combination of isotype (IgG, IgA, IgM), subclass (IgG1, IgG2, IgG3, IgG4, IgA1, IgA2), and strain-specific antibodies to highly purified whole C. difficile toxins A and B (toxinotype 0, strain VPI 10463, ribotype 087), toxin B from a C. difficile toxin-B-only expressing strain (CCUG 20309), a precursor form of a B fragment of binary toxin, pCDTb, ribotype-specific whole surface layer proteins (SLPs; 001, 002, 027), and control proteins (tetanus toxoid and Candida albicans). During the experiment, microarrays are probed with sera from individuals with C. difficile infection (CDI), individuals with cystic fibrosis (CF) without diarrhea, healthy controls (HC), and from individuals pre- and post-IVIg therapy for the treatment of CDI, combined immunodeficiency disorder, and chronic inflammatory demyelinating polyradiculopathy. We encounter significant differences in toxin neutralization efficacies and multi-isotype specific antibody levels between patient groups, commercial preparations of IVIg, and sera before and following IVIg administration. Also, there is a significant correlation between microarray and enzyme-linked immunosorbent assay (ELISA) for antitoxin IgG levels in serum samples. These results suggest that microarray could become a promising tool for profiling antibody responses to C.difficile antigens in vaccinated or infected humans. With further refinement of antigen panels and a reduction in production costs, we anticipate that microarray technology may help optimize and select the most clinically useful immunotherapies for C. difficile infection in a patient-specific manner.

A Protein Microarray Assay for Serological Determination of Antigen-specific Antibody Responses Following Clostridium difficile Infection

This article describes a simple protein microarray method for profiling humoral immune responses to a 7-plex panel of highly purified Clostridium difficile antigens in human sera. The protocol can be extended for the determination of specific antibody responses in preparations of polyclonal intravenous immunoglobulin.

항 원 특정 항 체 응답 다음 Clostridium 남과 어울리지 않 는 감염의 혈 청 학적인 결정에 대 한 단백질 Microarray 분석 결과

We provide a detailed overview of a novel high-throughput protein microarray assay for the determination of anti-Clostridium difficile antibody levels in ...

A Purification and In Vitro Activity Assay for a (p)ppGpp Synthetase from Clostridium difficile

Kinase and pyrophosphokinase enzymes transfer the gamma phosphate or the beta-gamma pyrophosphate moiety from nucleotide triphosphate precursors to substrates to create phosphorylated products. The use of &#947;-32-P labeled NTP precursors allows simultaneous monitoring of substrate utilization and product formation by radiography. Thin layer chromatography (TLC) on cellulose plates allows rapid separation and sensitive quantification of substrate and product. We present a method for utilizing the thin-layer chromatography to assay the pyrophosphokinase activity of a purified (p)ppGpp synthetase. This method has previously been used to characterize the activity of cyclic nucleotide and dinucleotide synthetases and is broadly suitable for characterizing the activity of any enzyme that hydrolyzes a nucleotide triphosphate bond or transfers a terminal phosphate from a phosphate donor to another molecule.

A Purification and In Vitro Activity Assay for a pppGpp Synthetase from Clostridium difficile

Here, we describe a method for purifying histidine-tagged pyrophosphokinase enzymes and utilizing thin layer chromatography of radiolabelled substrates and products to assay for the enzymatic activity in vitro. The enzyme activity assay is broadly applicable to any kinase, nucleotide cyclase, or phosphor-transfer reaction whose mechanism includes nucleotide triphosphate hydrolysis.

정화 및 체 외에서 활동 분석 결과 (p) ppGpp Clostridium 남과 어울리지 않 는에서 합성에 대 한

Kinase and pyrophosphokinase enzymes transfer the gamma phosphate or the beta-gamma pyrophosphate moiety from nucleotide triphosphate precursors to ...

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형광

마우스 대 식세포의 타고난 면역 반응을 조사하기 위해 RNA 간섭을 사용하여

숙주 세포와 혐기성 세균의 상호 작용을 평가하기위한 모델 생물로 포피 진지 발리

변조 C 디 GMP가에서 시그널링 그건 작은 분자를 스크리닝하기위한 높은 처리량 설정 구축

PM10의 입자 바인딩 베팅 1 절 알레르기의 유세포 분석

의 Cefoperazone 처리 된 마우스 모델 임상 관련

형태 변화를 규명하기위한 프로토콜

항 원 특정 항 체 응답 다음 Clostridium 남과 어울리지 않 는 감염의 혈 청 학적인 결정에 대 한 단백질 Microarray 분석 결과

정화 및 체 외에서 활동 분석 결과 (p) ppGpp Clostridium 남과 어울리지 않 는에서 합성에 대 한