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Vancomycin-resistant Staphylococcus aureus

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193: 2501: 617: 2531: 2541: 25: 1702: 2521: 2511: 66: 113: 403: 1418: 277:. Bacteria can acquire resistant genes either by random mutation or through the transfer of DNA from one bacterium to another. Resistance genes interfere with the normal antibiotic function and allow bacteria to grow in the presence of the antibiotic. Resistance in VRSA is conferred by the plasmid-mediated 613:), indicating resistance to all glycopeptide antibiotics. These bacterial strains present a thickening of the cell wall, which is believed to reduce the ability of vancomycin to diffuse into the division septum of the cell required for effective vancomycin treatment. 281:
gene and operon. Although VRSA infections are uncommon, VRSA is often resistant to other types of antibiotics and a potential threat to public health because treatment options are limited. VRSA is resistant to many of the standard drugs used to treat
1175:"Reduced Vancomycin Susceptibility in Staphylococcus aureus, Including Vancomycin-Intermediate and Heterogeneous Vancomycin-Intermediate Strains: Resistance Mechanisms, Laboratory Detection, and Clinical Implications" 1668: 1445: 1592:
Chang, Soju; Sievert, Dawn M.; Hageman, Jeffrey C.; Boulton, Matthew L.; Tenover, Fred C.; Downes, Frances Pouch; Shah, Sandip; Rudrik, James T.; Pupp, Guy R. (April 3, 2003).
897:"Clinical Practice Guidelines by the Infectious Diseases Society of America for the Treatment of Methicillin-Resistant Staphylococcus Aureus Infections in Adults and Children" 1124:
Chang, Soju; Sievert, Dawn M.; Hageman, Jeffrey C.; Boulton, Matthew L.; Tenover, Fred C.; Downes, Frances Pouch; Shah, Sandip; Rudrik, James T.; Pupp, Guy R. (2003-04-03).
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The definition of hVISA according to Hiramatsu et al. is a strain of Staphylococcus aureus that gives resistance to vancomycin at a frequency of 10 colonies or even higher.
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CLSI (2023). M100 Performance Standards for Antimicrobial Susceptibility Standards (Report) (33 ed.). Wayne PA: Clinical and Laboratory Standards Institute. p. 8.
38: 391: 332:(VISA), which appear to develop elevated MICs to vancomycin through sequential mutations resulting in a thicker cell wall and the synthesis of excess amounts of 1562: 1335:, including vancomycin-intermediate and heterogeneous vancomycin-intermediate strains: resistance mechanisms, laboratory detection, and clinical implications" 87: 131: 44: 387: 425:, alternative antibiotics should be used. The approach is to treat with at least one agent to which the bacteria known to be susceptible by 738: 452: 383: 2030: 74: 2371: 1970: 298:
was first reported in the United States in 2002. To date, documented cases of VRSA have acquired resistance through uptake of a
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Resistant or "R" designations are assigned based on agreed upon values called breakpoints. Breakpoints are published by
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As of 2019, 52 VRSA strains have been identified in the United States, India, Iran, Pakistan, Brazil, and Portugal.
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Howden, Benjamin P.; Davies, John K.; Johnson, Paul D. R.; Stinear, Timothy P.; Grayson, M. Lindsay (2010-01-01).
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in the setting of vancomycin failure the Infectious Diseases Society of America recommends high-dose
448: 375:. Once the MIC is known, resistance is determined by comparing the MIC with established breakpoints 1282:"Methicillin-resistant Staphylococcus aureus clinical strain with reduced vancomycin susceptibility" 2221: 2143: 2138: 2058: 1818: 1680: 663: 2580: 2201: 2175: 333: 271: 79: 1793: 1741: 1126:"Infection with Vancomycin-Resistant Staphylococcus aureus Containing the vanA Resistance Gene" 379: 2444: 2330: 2303: 2276: 2228: 2182: 1877: 936: 658: 621: 266: 209: 1241:
Appelbaum PC (November 2007). "Reduced glycopeptide susceptibility in methicillin-resistant
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Hiramatsu, K.; Hanaki, H.; Ino, T.; Yabuta, K.; Oguri, T.; Tenover, F. C. (1997-07-01).
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infections. Furthermore, resistance can be transferred from one bacterium to another.
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experiments reported in 1992 demonstrated that vancomycin resistance genes from
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isolate to vancomycin. This is accomplished by first assessing the isolate's
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Bacterial Toxins: Genetics, Cellular Biology and Practical Applications
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Howden BP, Davies JK, Johnson PD, Stinear TP, Grayson ML (Jan 2010).
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McGuinness, Will A.; Malachowa, Natalia; DeLeo, Frank (23 Jun 2017).
733:) was isolated from a patient in Michigan. The isolate contained the 475: 436: 355:(VRSA) is performed by performing susceptibility testing on a single 960:
Cloeckaert, Axel; Zygmunt, Michel S.; Doublet, Benoît (2017-12-05).
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Gould IM (December 2010). "VRSA-doomsday superbug or damp squib?".
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Loomba, Poonam Sood; Taneja, Juhi; Mishra, Bibhabati (2010-01-01).
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of the VRSA isolate were consistent with the VanA phenotype of
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in 1996 and has since been found in hospitals elsewhere in
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Cong, Yanguang; Yang, Sijin; Rao, Xiancai (January 2020).
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European Committee on Antimicrobial Susceptibility Testing
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Heterogeneous vancomycin-intermediate S. aureus (hVISA)
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automated antimicrobial susceptibility testing systems
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Lu, Yichen; Essex, Max; Roberts, Bryan (2008-04-11).
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may be too technical for most readers to understand
1512:Cong, Yanguang; Yang, Sijin; Rao, Xiancai (2020). 832: 670:, conferring high-level vancomycin resistance to 2557: 1028:"Vancomycin Resistance in Staphylococcus aureus" 937:"CDC - VISA / VRSA in Healthcare Settings - HAI" 782:carried by the VRSA isolate. This transposon, Tn 1560: 1473:"Vancomycin resistance in gram-positive cocci" 1443: 506:(VISA), heterogeneous vancomycin-intermediate 388:British Society for Antimicrobial Chemotherapy 1742: 510:(hVISA), and high-level vancomycin-resistant 363:using standard laboratory methods, including 1464: 1375: 1240: 1234: 790:-type vancomycin resistance in enterococci. 774:gene was later found to be encoded within a 1511: 1470: 1066: 384:Clinical and Laboratory Standards Institute 310:). The acquired mechanism is typically the 53:Learn how and when to remove these messages 2031:Reproductive endocrinology and infertility 1749: 1735: 1718:Vancomycin-resistant Staphylococcus aureus 770:recovered from the same catheter tip. The 431:testing. The agents that are used include 191: 186:Vancomycin-resistant Staphylococcus aureus 2372:Bachelor of Medicine, Bachelor of Surgery 1613: 1567:. Springer Science & Business Media. 1537: 1488: 1358: 1297: 1206: 1141: 1100: 1043: 995: 977: 912: 868: 850: 397: 168:Learn how and when to remove this message 150:Learn how and when to remove this message 134:, without removing the technical details. 1381: 615: 401: 90:of all important aspects of the article. 498:have emerged that differ in vancomycin 325:This mechanism differs from strains of 248:Beta-lactam antibiotic (in combination) 2558: 1331:"Reduced vancomycin susceptibility in 890: 888: 494:Three classes of vancomycin-resistant 361:minimum inhibitory concentration (MIC) 351:The diagnosis of vancomycin-resistant 86:Please consider expanding the lead to 1730: 1594:"Infection with Vancomycin-Resistant 1416: 1286:Journal of Antimicrobial Chemotherapy 839:Journal of Global Infectious Diseases 828: 826: 270:that have acquired resistance to the 132:make it understandable to non-experts 2510: 2271:Physical medicine and rehabilitation 1598:Containing the vanA Resistance Gene" 1447:Antimicrobial Resistance in Bacteria 1229: 1021: 1019: 1017: 1015: 895:Liu, Catherine; et al. (2011). 640:High-level vancomycin resistance in 106: 59: 18: 2520: 894: 885: 380:standards development organizations 13: 2407:Medical Scientist Training Program 1585: 1444:Amábile-Cuevas, Carlos F. (2007). 823: 314:gene and operon from a plasmid in 14: 2592: 1639: 1259:10.1016/j.ijantimicag.2007.07.011 1012: 751:species, and the presence of the 678:strains. In 2002, a VRSA strain ( 34:This article has multiple issues. 2539: 2529: 2519: 2509: 2500: 2499: 1700: 763:gene was identical to that of a 706: 680: 558: 532: 419:minimum inhibitory concentration 290:Mechanism of acquired resistance 111: 64: 23: 2540: 1602:New England Journal of Medicine 1554: 1505: 1437: 1410: 1322: 1273: 1130:New England Journal of Medicine 765:vancomycin-resistant strain of 759:. The DNA sequence of the VRSA 78:may be too short to adequately 42:or discuss these issues on the 2397:Doctor of Osteopathic Medicine 1831:Oral and maxillofacial surgery 1223: 1166: 1117: 1060: 953: 929: 88:provide an accessible overview 16:Antibiotica resistant bacteria 1: 2576:Antibiotic-resistant bacteria 1396:10.1016/S1473-3099(10)70259-0 1179:Clinical Microbiology Reviews 816: 480:trimethoprim/sulfamethoxazole 302:resistance gene cluster from 2377:Bachelor of Medical Sciences 2144:Neurosurgical anesthesiology 1756: 1471:Courvalin P (January 2006). 1450:. Horizon Scientific Press. 1423:. Horizon Scientific Press. 1073:Journal of Advanced Research 901:Clinical Infectious Diseases 346: 201:Scanning electron micrograph 7: 1564:Emerging Infections in Asia 804: 10: 2597: 1530:10.1016/j.jare.2019.10.005 1247:Int. J. Antimicrob. Agents 1085:10.1016/j.jare.2019.10.005 644:has been rarely reported. 585:) was first identified in 502:: vancomycin-intermediate 489: 2495: 2417: 2355: 2116: 2044: 1999: 1908: 1779: 1764: 1654: 966:Frontiers in Microbiology 757:polymerase chain reaction 449:quinupristin–dalfopristin 244: 234: 224: 199: 190: 185: 2331:Transplantation medicine 2222:Clinical neurophysiology 2139:Obstetric anesthesiology 2059:Interventional radiology 1819:Digestive system surgery 979:10.3389/fmicb.2017.02428 662:could be transferred by 526:Vancomycin-intermediate 518:Vancomycin-intermediate 369:gradient strip diffusion 327:vancomycin-intermediate 215:vancomycin-intermediate 2202:Intensive care medicine 2176:Mass gathering medicine 2021:Maternal–fetal medicine 852:10.4103/0974-777X.68535 272:glycopeptide antibiotic 1794:Cardiothoracic surgery 1417:Proft, Thomas (2013). 755:gene was confirmed by 739:methicillin resistance 628: 453:methicillin-resistant 414: 398:Treatment of infection 213:bacteria taken from a 2445:Personalized medicine 2304:Reproductive medicine 2229:Occupational medicine 2183:Evolutionary medicine 1596:Staphylococcus aureus 1333:Staphylococcus aureus 1243:Staphylococcus aureus 767:Enterococcus faecalis 659:Enterococcus faecalis 632:Vancomycin-resistant 619: 611:Staphylococcus aureus 455:Staphylococcus aureus 405: 353:Staphylococcus aureus 329:Staphylococcus aureus 320:Enterococcus faecalis 296:Staphylococcus aureus 294:Vancomycin-resistant 267:Staphylococcus aureus 257:Staphylococcus aureus 255:Vancomycin-resistant 217:Staphylococcus aureus 210:Staphylococcus aureus 2465:Traditional medicine 2425:Alternative medicine 2292:Addiction psychiatry 2106:Transfusion medicine 2101:Medical microbiology 2016:Gynecologic oncology 1868:Reproductive surgery 1615:10.1056/NEJMoa025025 1351:10.1128/CMR.00042-09 1339:Clin. Microbiol. Rev 1299:10.1093/jac/40.1.135 1191:10.1128/CMR.00042-09 1143:10.1056/NEJMoa025025 316:Enterococcus faecium 2487:History of medicine 2470:Veterinary medicine 2277:Preventive medicine 2129:Adolescent medicine 1971:Infectious diseases 1483:(Suppl 1): S25–34. 2571:Bacterial diseases 2435:Molecular oncology 2392:Doctor of Medicine 2382:Master of Medicine 2299:Radiation oncology 2171:Emergency medicine 2124:Addiction medicine 2091:Clinical chemistry 2086:Clinical pathology 1878:Transplant surgery 1836:Orthopedic surgery 1814:Colorectal surgery 914:10.1093/cid/ciq146 629: 595:the United Kingdom 451:. For people with 415: 2566:Staphylococcaceae 2553: 2552: 2387:Master of Surgery 2351: 2350: 2336:Tropical medicine 2282:Prison healthcare 2197:Hospital medicine 2161:Disaster medicine 2151:Aviation medicine 1966:Hospital medicine 1873:Surgical oncology 1858:Pediatric surgery 1852: 1799:Endocrine surgery 1695: 1694: 1608:(14): 1342–1347. 1477:Clin. Infect. Dis 1384:Lancet Infect Dis 1136:(14): 1342–1347. 421:of vancomycin is 382:such as the U.S. 340: 336: 264:) are strains of 252: 251: 236:Diagnostic method 180:Medical condition 178: 177: 170: 160: 159: 152: 105: 104: 57: 2588: 2543: 2542: 2533: 2523: 2522: 2513: 2512: 2503: 2502: 2207:Medical genetics 2192:General practice 2069:Nuclear medicine 1944:Gastroenterology 1900:Vascular surgery 1850: 1777: 1776: 1751: 1744: 1737: 1728: 1727: 1704: 1703: 1652: 1651: 1635: 1617: 1579: 1578: 1558: 1552: 1551: 1541: 1509: 1503: 1502: 1492: 1468: 1462: 1461: 1441: 1435: 1434: 1414: 1408: 1407: 1379: 1373: 1372: 1362: 1326: 1320: 1319: 1301: 1277: 1271: 1270: 1238: 1232: 1231: 1227: 1221: 1220: 1210: 1170: 1164: 1163: 1145: 1121: 1115: 1114: 1104: 1064: 1058: 1057: 1047: 1023: 1010: 1009: 999: 981: 957: 951: 950: 948: 947: 933: 927: 926: 916: 892: 883: 882: 872: 854: 830: 732: 731: 728: 727: 724: 721: 718: 715: 712: 703: 702: 699: 698: 695: 692: 689: 686: 593:, as well as in 584: 583: 580: 579: 576: 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638: 561: 557: 535: 531: 524: 492: 422: 400: 349: 292: 220:(VISA) culture. 181: 174: 163: 162: 161: 156: 145: 139: 136: 128:help improve it 125: 116: 112: 101: 95: 92: 85: 73:This article's 69: 28: 24: 17: 12: 11: 5: 2594: 2584: 2583: 2581:Staphylococcus 2578: 2573: 2568: 2551: 2550: 2548: 2547: 2537: 2527: 2517: 2507: 2496: 2493: 2492: 2490: 2489: 2484: 2483: 2482: 2472: 2467: 2462: 2457: 2452: 2447: 2442: 2437: 2432: 2427: 2421: 2419: 2418:Related topics 2415: 2414: 2412: 2411: 2410: 2409: 2399: 2394: 2389: 2384: 2379: 2374: 2369: 2367:Medical school 2363: 2361: 2353: 2352: 2349: 2348: 2346: 2345: 2344: 2343: 2333: 2328: 2323: 2321:Sleep medicine 2318: 2317: 2316: 2306: 2301: 2296: 2295: 2294: 2284: 2279: 2274: 2268: 2263: 2262: 2261: 2251: 2246: 2241: 2236: 2231: 2226: 2225: 2224: 2214: 2209: 2204: 2199: 2194: 2185: 2180: 2179: 2178: 2168: 2163: 2158: 2153: 2148: 2147: 2146: 2141: 2134:Anesthesiology 2131: 2126: 2120: 2118: 2114: 2113: 2111: 2110: 2109: 2108: 2103: 2098: 2093: 2088: 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Scanning electron micrograph
strain
Staphylococcus aureus
vancomycin-intermediate Staphylococcus aureus
Specialty
Diagnostic method
Staphylococcus aureus
glycopeptide antibiotic
vancomycin
vancomycin
VRE
vancomycin-intermediate Staphylococcus aureus
D-ala-D-ala
minimum inhibitory concentration (MIC)
disc diffusion
gradient strip diffusion
automated antimicrobial susceptibility testing systems
standards development organizations

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