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Acute-phase protein

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31: 1331: 1343: 664:, an acute phase reactant with a half-life of approximately one week. This protein will therefore remain higher for longer despite the removal of the inflammatory stimuli. In contrast, C-reactive protein (with a half-life of 6–8 hours) rises rapidly and can quickly return to within the normal range if treatment is employed. For example, in active 989:
Muta T, Takeshige K (2001). "Essential roles of CD14 and lipopolysaccharide-binding protein for activation of toll-like receptor (TLR)2 as well as TLR4 Reconstitution of TLR2- and TLR4-activation by distinguishable ligands in LPS preparations".
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While the production of C3 (a complement factor) increases in the liver, the plasma concentration often lowers because of an increased turn-over, therefore it is often seen as a negative acute-phase protein.
1032:"Reference distributions for the negative acute-phase serum proteins, albumin, transferrin, and transthyretin: a practical, simple and clinically relevant approach in a large cohort" 1186: 636:
for producing "positive" acute-phase proteins more efficiently. Theoretically, a decrease in transferrin could additionally be decreased by an upregulation of
632:. The decrease of such proteins may be used as markers of inflammation. The physiological role of decreased synthesis of such proteins is generally to save 806:
Lippincott's Illustrated Reviews: Immunology. Paperback: 384 pages. Publisher: Lippincott Williams & Wilkins; (July 1, 2007). Language: English.
834:"Alpha-2-macroglobulin functions as an inhibitor of fibrinolytic, clotting, and neutrophilic proteinases in sepsis: studies using a baboon model" 1120:
Ananian P, Hartvigsen J, Bernard D, Le Treut YP (2005). "Serum acute-phase protein level as indicator for liver failure after liver resection".
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Measurement of acute-phase proteins, especially C-reactive protein, is a useful marker of inflammation in both medical and veterinary
584: 1047: 811: 425: 760:"Acute-phase responsiveness of mannose-binding lectin in community-acquired pneumonia is highly dependent upon MBL2 genotypes" 657: 1363: 1172: 595: 389: 1321: 200:. IL-6 is the major mediator for the hepatocytic secretion of APPs. Synthesis of APP can also be regulated indirectly by 665: 432: 216:
Positive acute-phase proteins serve (as part of the innate immune system) different physiological functions within the
1277: 161: 130: 181: 1211: 329: 1232: 1158: 574: 621: 229: 205: 1081:"Serum transferrin receptor assay in iron deficiency anaemia and anaemia of chronic disease in the elderly" 56:
either increase (positive acute-phase proteins) or decrease (negative acute-phase proteins) in response to
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are, therefore, referred to as "negative" acute-phase reactants. Increased acute-phase proteins from the
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responds by producing many acute-phase reactants. At the same time, the production of a number of other
660:(ESR), however not always directly. This is due to the ESR being largely dependent on the elevation of 758:
Herpers BL, Endeman H, de Jong BA, de Jongh BM, Grutters JC, Biesma DH, van Velzen-Blad H (Jun 2009).
945: 637: 354: 285: 1303: 1237: 561: 415: 265: 1247: 653: 591: 316: 233: 225: 165: 1154: 1149: 668:, one may find a raised ESR but normal C-reactive protein.They may also indicate liver failure. 832:
de Boer JP, Creasey AA, Chang A, Abbink JJ, Roem D, Eerenberg AJ, et al. (December 1993).
1129: 1102: 1061: 1007: 971: 914: 863: 815: 807: 789: 725: 363: 289: 253: 1092: 1051: 1043: 999: 961: 953: 904: 894: 853: 845: 779: 771: 715: 705: 447: 169: 1347: 1257: 1216: 339: 293: 245: 949: 1335: 1056: 1031: 966: 933: 909: 882: 784: 759: 720: 693: 103: 35: 858: 833: 30: 1357: 1252: 1003: 849: 775: 617: 518: 308: 241: 221: 217: 185: 173: 126: 122: 17: 625: 462: 369: 193: 100: 57: 53: 899: 1308: 1287: 1272: 629: 613: 546: 532: 511: 507: 495: 451: 405: 401: 269: 249: 177: 119: 89: 1330: 1030:
Ritchie RF, Palomaki GE, Neveux LM, Navolotskaia O, Ledue TB, Craig WY (1999).
1097: 1080: 661: 633: 538: 397: 377: 197: 111: 88:(APR) are often used synonymously, although some APRs are (strictly speaking) 77: 73: 1282: 957: 883:"The battle for iron between bacterial pathogens and their vertebrate hosts" 710: 273: 1133: 1106: 1065: 1011: 975: 918: 793: 729: 608:"Negative" acute-phase proteins decrease in inflammation. Examples include 284:
clots. Also, some products of the coagulation system can contribute to the
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10.1002/(SICI)1098-2825(1999)13:6<273::AID-JCLA4>3.0.CO;2-X
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in liver cells and induce IL-6-mediated production of APPs.  
172:
are important for the expression of inflammatory mediators such as
1079:
Chua E, Clague JE, Sharma AK, Horan MA, Lombard M (October 1999).
934:"ER stress controls iron metabolism through induction of hepcidin" 373: 281: 146: 134: 69: 747:(4th ed.). Philadelphia, PA: Saunders/Elsevier. p. 40. 499: 481: 1168: 640:, but the latter does not appear to change with inflammation. 288:
by their ability to increase vascular permeability and act as
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http://eclinpath.com/chemistry/proteins/acute-phase-proteins/
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Basic immunology Functions and Disorders of the Immune System
272:, mainly stimulating it. This pro-coagulant effect may limit 541:, inhibiting microbe iron uptake and prevents kidney damage 932:
Vecchi C, Montosi G, Zhang K, et al. (August 2009).
68:). The acute-phase reaction characteristically involves 431:
Prevents the degradation of blood clots by inhibiting
1319: 118:
into the bloodstream, most notable of which are the
1296: 1225: 1202: 324:on microbes (not an acute-phase reactant in mice) 346:Recruitment of immune cells to inflammatory sites 196:produce IL-6 in the liver and present it to the 1180: 8: 698:Journal of Pharmacy & Bioallied Sciences 418:, trapping invading microbes in blood clots. 692:Jain S, Gautam V, Naseem S (January 2011). 220:. Some act to destroy or inhibit growth of 1187: 1173: 1165: 694:"Acute-phase proteins: As diagnostic tool" 204:. Cortisol can enhance expression of IL-6 27:Class of proteins involved in inflammation 1157:at the U.S. National Library of Medicine 1096: 1055: 1025: 1023: 1021: 965: 908: 898: 857: 783: 719: 709: 188:. After stimulation with proinflammatory 298: 180:, and they also cause the production of 149:may also contribute to the promotion of 29: 1326: 679: 743:Abbas A, Lichtman A, Pillai S (2012). 7: 687: 685: 683: 579:Serpin, downregulates inflammation 256:on the inflammatory response, e.g. 585:Lipopolysaccharide binding protein 494:Stimulates the internalization of 25: 527:, inhibiting microbe iron uptake 484:, inhibiting microbe iron uptake 426:Plasminogen activator inhibitor-1 300:"Positive" acute-phase proteins: 1341: 1329: 1004:10.1046/j.1432-1327.2001.02385.x 850:10.1128/iai.61.12.5035-5043.1993 776:10.1111/j.1365-2249.2009.03929.x 549:(Alpha-1-acid glycoprotein, AGP) 523:Oxidizes iron, facilitating for 80:and their precursors. The terms 658:erythrocyte sedimentation rate 376:and clumping of target cells. 60:. This response is called the 1: 596:pattern recognition receptors 594:, evoke immune responses via 569:, downregulates inflammation 390:Mannan-binding lectin pathway 72:, acceleration of peripheral 900:10.1371/journal.ppat.1000949 666:systemic lupus erythematosus 433:tissue Plasminogen Activator 1278:Haptoglobin-related protein 1385: 182:platelet-activating factor 656:. It correlates with the 392:of complement activation 330:Serum amyloid P component 1233:Alpha 1-antichymotrypsin 1159:Medical Subject Headings 575:Alpha 1-antichymotrypsin 498:, preventing release of 52:whose concentrations in 1098:10.1093/qjmed/92.10.587 958:10.1126/science.1176639 711:10.4103/0975-7406.76489 622:retinol-binding protein 230:mannose-binding protein 157:Regulation of synthesis 108:neutrophil granulocytes 34:Inflammatory cells and 1122:Hepatogastroenterology 838:Infection and Immunity 590:Attaches to bacterial 420:Some cause chemotaxis 114:) secrete a number of 92:rather than proteins. 38: 1243:Alpha 2-macroglobulin 648:Clinical significance 638:transferrin receptors 441:Alpha 2-macroglobulin 411:von Willebrand factor 385:Mannan-binding lectin 262:Alpha 2-macroglobulin 33: 1364:Acute-phase proteins 1196:Acute-phase proteins 1155:Acute-Phase+Proteins 355:extracellular matrix 286:innate immune system 86:acute-phase reactant 66:acute-phase response 62:acute-phase reaction 42:Acute-phase proteins 18:Acute phase proteins 1238:Alpha 1-antitrypsin 950:2009Sci...325..877V 562:Alpha 1-antitrypsin 416:Coagulation factors 301: 266:coagulation factors 82:acute-phase protein 1248:C-reactive protein 1036:J. Clin. Lab. Anal 654:clinical pathology 506:within intestinal 317:C-reactive protein 299: 290:chemotactic agents 234:complement factors 226:C-reactive protein 141:is reduced; these 39: 1317: 1316: 881:Skaar EP (2010). 820:978-0-7817-9543-2 601: 600: 254:negative feedback 48:) are a class of 16:(Redirected from 1376: 1346: 1345: 1344: 1334: 1333: 1325: 1189: 1182: 1175: 1166: 1138: 1137: 1117: 1111: 1110: 1100: 1076: 1070: 1069: 1059: 1027: 1016: 1015: 986: 980: 979: 969: 944:(5942): 877–80. 929: 923: 922: 912: 902: 878: 872: 871: 861: 829: 823: 804: 798: 797: 787: 764:Clin Exp Immunol 755: 749: 748: 740: 734: 733: 723: 713: 689: 302: 294:phagocytic cells 21: 1384: 1383: 1379: 1378: 1377: 1375: 1374: 1373: 1354: 1353: 1352: 1342: 1340: 1328: 1320: 1318: 1313: 1292: 1221: 1198: 1193: 1146: 1141: 1119: 1118: 1114: 1078: 1077: 1073: 1029: 1028: 1019: 992:Eur. J. Biochem 988: 987: 983: 931: 930: 926: 893:(8): e1000949. 880: 879: 875: 844:(12): 5035–43. 831: 830: 826: 805: 801: 757: 756: 752: 742: 741: 737: 691: 690: 681: 677: 671: 650: 606: 548: 419: 409: 340:Serum amyloid A 246:serum amyloid A 214: 159: 95:In response to 36:red blood cells 28: 23: 22: 15: 12: 11: 5: 1382: 1380: 1372: 1371: 1366: 1356: 1355: 1351: 1350: 1338: 1315: 1314: 1312: 1311: 1306: 1300: 1298: 1294: 1293: 1291: 1290: 1285: 1280: 1275: 1270: 1265: 1260: 1255: 1250: 1245: 1240: 1235: 1229: 1227: 1226:Other positive 1223: 1222: 1220: 1219: 1214: 1208: 1206: 1200: 1199: 1194: 1192: 1191: 1184: 1177: 1169: 1163: 1162: 1152: 1145: 1144:External links 1142: 1140: 1139: 1128:(63): 857–61. 1112: 1091:(10): 587–94. 1071: 1017: 998:(16): 4580–9. 981: 924: 873: 824: 799: 750: 735: 678: 676: 673: 649: 646: 605: 602: 599: 598: 588: 581: 580: 577: 571: 570: 564: 558: 557: 551: 543: 542: 535: 529: 528: 521: 515: 514: 492: 486: 485: 478: 472: 471: 470: 469: 465:by inhibiting 459: 454:by inhibiting 443: 437: 436: 429: 422: 421: 413: 394: 393: 387: 381: 380: 367: 360: 359: 358: 357: 347: 342: 336: 335: 332: 326: 325: 319: 313: 312: 306: 252:. Others give 213: 210: 174:prostaglandins 158: 155: 76:, circulating 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1381: 1370: 1369:Immune system 1367: 1365: 1362: 1361: 1359: 1349: 1339: 1337: 1332: 1327: 1323: 1310: 1307: 1305: 1304:Serum albumin 1302: 1301: 1299: 1295: 1289: 1286: 1284: 1281: 1279: 1276: 1274: 1271: 1269: 1266: 1264: 1261: 1259: 1256: 1254: 1253:Ceruloplasmin 1251: 1249: 1246: 1244: 1241: 1239: 1236: 1234: 1231: 1230: 1228: 1224: 1218: 1215: 1213: 1210: 1209: 1207: 1205: 1201: 1197: 1190: 1185: 1183: 1178: 1176: 1171: 1170: 1167: 1160: 1156: 1153: 1151: 1148: 1147: 1143: 1135: 1131: 1127: 1123: 1116: 1113: 1108: 1104: 1099: 1094: 1090: 1086: 1082: 1075: 1072: 1067: 1063: 1058: 1053: 1049: 1045: 1041: 1037: 1033: 1026: 1024: 1022: 1018: 1013: 1009: 1005: 1001: 997: 993: 985: 982: 977: 973: 968: 963: 959: 955: 951: 947: 943: 939: 935: 928: 925: 920: 916: 911: 906: 901: 896: 892: 888: 884: 877: 874: 869: 865: 860: 855: 851: 847: 843: 839: 835: 828: 825: 821: 817: 813: 812:0-7817-9543-5 809: 803: 800: 795: 791: 786: 781: 777: 773: 770:(3): 488–94. 769: 765: 761: 754: 751: 746: 739: 736: 731: 727: 722: 717: 712: 707: 704:(1): 118–27. 703: 699: 695: 688: 686: 684: 680: 674: 672: 669: 667: 663: 659: 655: 647: 645: 641: 639: 635: 631: 627: 623: 619: 618:transthyretin 615: 611: 603: 597: 593: 589: 586: 583: 582: 578: 576: 573: 572: 568: 565: 563: 560: 559: 555: 552: 550: 545: 544: 540: 536: 534: 531: 530: 526: 522: 520: 519:Ceruloplasmin 517: 516: 513: 509: 505: 501: 497: 493: 491: 488: 487: 483: 479: 477: 474: 473: 468: 464: 461:Inhibitor of 460: 457: 453: 449: 446: 445: 444: 442: 439: 438: 434: 430: 427: 424: 423: 417: 414: 412: 407: 403: 399: 396: 395: 391: 388: 386: 383: 382: 379: 375: 371: 368: 365: 362: 361: 356: 353:that degrade 352: 349:Induction of 348: 345: 344: 343: 341: 338: 337: 333: 331: 328: 327: 323: 320: 318: 315: 314: 310: 309:Immune system 307: 304: 303: 297: 295: 291: 287: 283: 279: 275: 271: 267: 263: 259: 255: 251: 247: 243: 242:ceruloplasmin 239: 235: 231: 227: 223: 219: 218:immune system 211: 209: 207: 203: 199: 195: 194:Kupffer cells 191: 187: 183: 179: 175: 171: 167: 163: 156: 154: 152: 148: 144: 140: 136: 132: 128: 124: 121: 117: 113: 109: 105: 102: 98: 93: 91: 87: 83: 79: 75: 71: 67: 64:(also called 63: 59: 55: 51: 47: 43: 37: 32: 19: 1195: 1125: 1121: 1115: 1088: 1084: 1074: 1042:(6): 273–9. 1039: 1035: 995: 991: 984: 941: 937: 927: 890: 886: 876: 841: 837: 827: 802: 767: 763: 753: 744: 738: 701: 697: 670: 651: 642: 626:antithrombin 607: 463:fibrinolysis 370:Opsonization 276:by trapping 215: 178:leukotrienes 160: 120:interleukins 101:inflammatory 94: 90:polypeptides 85: 81: 65: 61: 58:inflammation 54:blood plasma 45: 41: 40: 1309:Transferrin 1288:Orosomucoid 1273:Haptoglobin 887:PLOS Pathog 634:amino acids 630:transcortin 614:transferrin 547:Orosomucoid 533:Haptoglobin 512:macrophages 508:enterocytes 496:ferroportin 452:coagulation 406:factor VIII 402:prothrombin 270:coagulation 250:haptoglobin 198:hepatocytes 112:macrophages 78:neutrophils 1358:Categories 822:. Page 182 675:References 662:fibrinogen 539:hemoglobin 398:Fibrinogen 378:Chemotaxis 364:Complement 74:leukocytes 1283:Hemopexin 502:bound by 448:Inhibitor 311:function 280:in local 278:pathogens 274:infection 206:receptors 190:cytokines 116:cytokines 1348:Medicine 1297:Negative 1263:Ferritin 1134:15966220 1107:10627880 1066:10633294 1012:11502220 976:19679815 919:20711357 794:19438602 730:21430962 604:Negative 556:carrier 525:ferritin 504:ferritin 490:Hepcidin 480:Binding 476:Ferritin 456:thrombin 428:(PAI-1) 366:factors 334:Opsonin 238:ferritin 224:, e.g., 222:microbes 212:Positive 202:cortisol 143:proteins 139:proteins 99:, local 50:proteins 1336:Biology 1322:Portals 1204:Amyloid 1057:6808097 967:2923557 946:Bibcode 938:Science 910:2920840 868:7693593 785:2691978 721:3053509 610:albumin 554:Steroid 467:plasmin 351:enzymes 322:Opsonin 305:Protein 268:affect 258:serpins 133:. The 1268:Fibrin 1161:(MeSH) 1132:  1105:  1064:  1054:  1010:  974:  964:  917:  907:  866:  859:281280 856:  818:  810:  792:  782:  728:  718:  587:(LBP) 567:Serpin 537:Binds 435:(tPA) 151:sepsis 129:, and 125:, and 97:injury 374:lysis 282:blood 170:IFN-γ 166:IL-1β 162:TNF-α 147:liver 135:liver 131:TNF-α 104:cells 70:fever 1130:PMID 1103:PMID 1062:PMID 1008:PMID 972:PMID 915:PMID 864:PMID 816:ISBN 808:ISBN 790:PMID 726:PMID 510:and 500:iron 482:iron 292:for 264:and 248:and 186:IL-6 184:and 176:and 168:and 110:and 84:and 46:APPs 1217:SAA 1212:SAP 1093:doi 1085:QJM 1052:PMC 1044:doi 1000:doi 996:268 962:PMC 954:doi 942:325 905:PMC 895:doi 854:PMC 846:doi 780:PMC 772:doi 768:156 716:PMC 706:doi 592:LPS 450:of 127:IL6 123:IL1 1360:: 1258:C3 1126:52 1124:. 1101:. 1089:92 1087:. 1083:. 1060:. 1050:. 1040:13 1038:. 1034:. 1020:^ 1006:. 994:. 970:. 960:. 952:. 940:. 936:. 913:. 903:. 889:. 885:. 862:. 852:. 842:61 840:. 836:. 814:. 788:. 778:. 766:. 762:. 724:. 714:. 700:. 696:. 682:^ 628:, 624:, 620:, 616:, 612:, 404:, 400:, 372:, 296:. 260:. 244:, 240:, 236:, 232:, 228:, 192:, 164:, 153:. 1324:: 1188:e 1181:t 1174:v 1136:. 1109:. 1095:: 1068:. 1046:: 1014:. 1002:: 978:. 956:: 948:: 921:. 897:: 891:6 870:. 848:: 796:. 774:: 732:. 708:: 702:3 458:. 408:, 106:( 44:( 20:)

Index

Acute phase proteins

red blood cells
proteins
blood plasma
inflammation
fever
leukocytes
neutrophils
polypeptides
injury
inflammatory
cells
neutrophil granulocytes
macrophages
cytokines
interleukins
IL1
IL6
TNF-α
liver
proteins
proteins
liver
sepsis
TNF-α
IL-1β
IFN-γ
prostaglandins
leukotrienes

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